Air conditioner indoor unit and control method thereof

Abstract

The present invention provides an air conditioner indoor unit and a control method thereof, wherein the air conditioner indoor unit comprises a wind shield arranged at an air inlet, wherein the wind shield has a fully open position and a closed position, and the wind shield in the closed position closes the air inlet. The control method comprises: in response to an opening instruction, controlling the wind shield to move to the fully open position; obtaining the indoor ambient temperature; judging whether the difference between the indoor ambient temperature and the set temperature is less than a preset threshold value, if so, controlling the wind shield to move to a position between the fully open position and the closed position, if not, returning to the step of obtaining the indoor ambient temperature. The wind shield located between the fully open position and the closed position reduces the air intake of the air inlet. By using the wind shield to reduce the air intake of the air inlet, a similar effect as preventing direct blowing is achieved, but there is no need to block the air outlet, thereby avoiding the condensation problem while ensuring comfort.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to an air conditioning indoor unit and a control method thereof. Background Art

[0002] Air conditioning is a common household appliance that can adjust the indoor temperature. As people's living standards improve, users have higher requirements for comfort during the use of air conditioning. Among them, in hot weather, in order to avoid discomfort caused by cold wind blowing directly to users, some air conditioners will set an anti-direct blowing mode. In the anti-direct blowing mode, the air conditioner indoor unit generally uses an air guide plate or an additional baffle to block the air outlet to avoid direct cold wind. However, after the air guide plate or baffle blocks the air outlet, because only one side is in contact with the cold air, the temperature difference on both sides of the air guide plate or baffle is large, which easily causes condensation problems on the air guide plate. Summary of the invention

[0003] An object of the present invention is to provide an air conditioner indoor unit and a control method thereof which can solve any of the above problems.

[0004] A further object of the present invention is to further improve the comfort of air outlet.

[0005] Another further object of the present invention is to maintain an indoor environment at a suitable temperature.

[0006] In particular, the present invention provides a control method for an air conditioner indoor unit, the air conditioner indoor unit comprising a wind shield arranged at an air inlet, the wind shield having a fully open position and a closed position, the wind shield in the closed position sealing the air inlet, the control method comprising:

[0007] In response to an opening instruction, controlling the wind deflector to move to the fully open position;

[0008] Get the indoor ambient temperature;

[0009] Determine whether the difference between the indoor ambient temperature and the set temperature is less than a preset threshold value, if so, control the wind shield to move to a position between the fully open position and the closed position, if not, return to the step of obtaining the indoor ambient temperature;

[0010] The projection of the wind deflector between the fully open position and the closed position on the plane where the air inlet is located is larger than the projection of the wind deflector at the fully open position on the plane where the air inlet is located, so as to reduce the air intake of the air inlet.

[0011] Optionally, the wind deflector has a first intermediate position between the fully open position and the closed position;

[0012] The step of controlling the wind deflector to move to a position between the fully open position and the closed position comprises:

[0013] In response to a difference between the indoor ambient temperature and the set temperature being less than a preset threshold, controlling the wind shield to move to the first intermediate position;

[0014] The wind shield is controlled to move to a position between the first intermediate position and the closed position according to the evaporator temperature of the air conditioner indoor unit.

[0015] Optionally, the wind deflector has a second intermediate position between the first intermediate position and the closed position;

[0016] The step of controlling the wind shield to move to a position between the first intermediate position and the closed position according to the evaporator temperature of the air conditioner indoor unit comprises:

[0017] Obtaining the real-time evaporator temperature of the air conditioner indoor unit;

[0018] acquiring a difference between the evaporator temperature when the wind shield moves to the first intermediate position and the real-time evaporator temperature;

[0019] If the difference between the evaporator temperature when the wind shield moves to the first intermediate position and the real-time evaporator temperature is greater than a first preset value and less than a second preset value, the wind shield is controlled to move to the second intermediate position.

[0020] Optionally, the wind deflector has a third intermediate position between the second intermediate position and the closed position;

[0021] The step of controlling the wind shield to move to a position between the first intermediate position and the closed position according to the evaporator temperature of the air conditioner indoor unit comprises:

[0022] If the difference between the evaporator temperature when the wind shield moves to the first intermediate position and the real-time evaporator temperature is greater than or equal to the second preset value and less than the third preset value, the wind shield is controlled to move to the third intermediate position.

[0023] Optionally, after the step of controlling the wind deflector to move to the third intermediate position, the step further comprises:

[0024] If the difference between the evaporator temperature when the wind shield moves to the first intermediate position and the real-time evaporator temperature is greater than or equal to the third preset value, the wind shield is controlled to move to the second intermediate position.

[0025] Optionally, before the step of controlling the wind shield to move to a position between the first intermediate position and the closed position according to the evaporator temperature of the air conditioner indoor unit, the step includes:

[0026] Determine whether the running time of the air-conditioning indoor unit after the wind deflector moves to the first middle position reaches a preset time. If so, execute the step of controlling the wind deflector to move to a position between the first middle position and the closed position according to the evaporator temperature of the air-conditioning indoor unit; if not, maintain the current working mode.

[0027] Optionally, the step of controlling the wind deflector to move to a position between the fully open position and the closed position comprises:

[0028] The air guide plate at the air outlet of the air conditioner indoor unit is controlled to rotate upward so that the position of one end of the air guide plate away from the air outlet is higher than the position of one end of the air guide plate away from the air outlet when the wind shield is in the fully open position.

[0029] Optionally, the step of controlling the wind deflector to move to a position between the fully open position and the closed position comprises:

[0030] Determine whether the difference between the indoor ambient temperature and the set temperature is greater than or equal to the preset threshold value. If so, control the wind shield to move to the fully open position; if not, maintain the current working mode.

[0031] In another aspect of the present invention, there is provided an air conditioner indoor unit, comprising:

[0032] a housing formed with an air inlet;

[0033] a wind deflector disposed at the air inlet, having a fully open position and a closed position, and the wind deflector can be moved to a position between the fully open position and the closed position to change the air intake volume of the air inlet;

[0034] A controller comprising a memory and a processor, wherein the memory stores a machine executable program, and when the machine executable program is executed by the processor, the control method of the air conditioner indoor unit according to any one of claims 1 to 8 is implemented.

[0035] Optionally, the wind deflector is pivotally connected to the casing so as to be switchable between different positions by rotating relative to the casing.

[0036] The air conditioner indoor unit of the present invention includes a windshield plate arranged at the air inlet, and the windshield plate has a fully open position and a closed position. The control method of the air conditioner indoor unit includes controlling the windshield plate to move to the fully open position in response to an opening instruction; obtaining the indoor ambient temperature; judging whether the difference between the indoor ambient temperature and the set temperature is less than a preset threshold value, if so, controlling the windshield plate to move to a position between the fully open position and the closed position, if not, returning to execute the step of obtaining the indoor ambient temperature. The projection of the windshield plate between the fully open position and the closed position on the plane where the air inlet is located is greater than the projection of the windshield plate in the fully open position on the plane where the air inlet is located, that is, the windshield plate in the fully open position enables the air inlet to have the maximum air intake, and as the windshield plate moves from the fully open position to the closed position, the air intake of the air inlet decreases. After the air conditioner indoor unit is turned on, the air inlet is first operated in a normal mode with the maximum air intake to quickly reduce the indoor temperature. When the difference between the indoor ambient temperature and the set temperature is less than a preset threshold, the wind shield is controlled to move to a position between the fully open position and the closed position, reducing the air intake of the air inlet, and then reducing the air outlet of the air conditioner indoor unit. In other words, the air blown out of the air conditioner indoor unit is made more comfortable, reducing the discomfort caused to the user. Therefore, by using the wind shield to reduce the air intake of the air inlet, it has a similar effect to preventing direct blowing, but there is no need to block the air outlet, thereby avoiding condensation problems while ensuring comfort.

[0037] Furthermore, the control method of the air conditioner indoor unit of the present invention controls the windshield to move to a position between the first intermediate position and the closed position according to the evaporator temperature, so that the air intake of the air inlet is further reduced as the evaporator temperature decreases. In other words, when the outlet air temperature is lower, the air intake is smaller, thereby avoiding the discomfort caused by the wind with too low temperature to the user, and further improving the comfort of the air outlet. Relatively speaking, although the air outlet volume is small, the outlet air temperature is also lower, so it is beneficial to ensure the cooling effect while maintaining comfort.

[0038] Furthermore, the control method of the air conditioner indoor unit of the present invention can restore the normal air intake of the air conditioner indoor unit by controlling the wind shield to move to the fully open position when the difference between the indoor ambient temperature and the set temperature is greater than or equal to a preset threshold. Therefore, it can avoid the situation where the indoor temperature rises due to the indoor cooling rate not meeting the requirement due to the reduction of the air intake, so that the indoor ambient temperature can be maintained within a temperature range close to the set temperature, and the indoor environment can maintain a suitable temperature.

[0039] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0041] Figure 1 is a schematic cross-sectional view of a wind shield plate of an indoor unit of an air conditioner according to an embodiment of the present invention in a closed position;

[0042] Figure 2 is a schematic cross-sectional view of a wind shield plate of an air conditioner indoor unit in a fully open position according to an embodiment of the present invention;

[0043] Figure 3 is a schematic cross-sectional view of a wind shield plate of an air conditioner indoor unit according to an embodiment of the present invention being in a first intermediate position;

[0044] Figure 4 is a schematic block diagram of an indoor unit of an air conditioner according to an embodiment of the present invention;

[0045] Figure 5 is a schematic flow chart of a control method of an air conditioner indoor unit according to an embodiment of the present invention;

[0046] Figure 6 is a schematic flow chart of the steps of controlling the wind shield to move to a position between a fully open position and a closed position in a control method of an air conditioner indoor unit according to an embodiment of the present invention;

[0047] Figure 7 is a schematic flow chart of a step of controlling a wind shield to move to a position between a first intermediate position and a closed position according to an evaporator temperature in a control method of an air conditioner indoor unit according to an embodiment of the present invention;

[0048] Figure 8 is a schematic flowchart of a control method for an air-conditioning indoor unit according to another embodiment of the present invention. DETAILED DESCRIPTION

[0049] It should be understood by those skilled in the art that the embodiments described below are only some embodiments of the present invention, rather than all embodiments of the present invention, and these embodiments are intended to explain the technical principles of the present invention, rather than to limit the protection scope of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should still fall within the protection scope of the present invention.

[0050] It should be noted that the logic and / or steps represented in the flowchart or described in other ways herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, device or equipment (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or equipment and execute instructions), or used in combination with these instruction execution systems, devices or equipment.

[0051] Figure 1 2 is a schematic cross-sectional view of a wind shield 20 of an air conditioner indoor unit 1 in a closed position according to an embodiment of the present invention. Figure 2 2 is a schematic cross-sectional view of a wind shield 20 of an air conditioner indoor unit 1 according to an embodiment of the present invention in a fully open position. Figure 3 2 is a schematic cross-sectional view of a wind shield 20 of an air conditioner indoor unit 1 according to an embodiment of the present invention, when the wind shield 20 is in a first intermediate position.

[0052] like Figures 1 to 3 As shown, in this embodiment, the air conditioner indoor unit 1 includes a housing 10, a wind shield 20 and an air guide plate 30. The housing 10 is formed with an air inlet 11 and an air outlet 12. The wind shield 20 is arranged at the air inlet 11, and has a fully open position and a closed position, and the wind shield 20 can be moved to a position between the fully open position and the closed position to change the air intake of the air inlet 11. The air guide plate 30 is arranged at the air outlet 12 to guide the wind blown out from the air outlet 12 during the operation of the air conditioner indoor unit.

[0053] Furthermore, the wind shield 20 is pivotally connected to the housing 10 so as to be switched between different positions by rotating relative to the housing 10 .

[0054] Reference Figure 1 and Figure 2 As shown, specifically, a plurality of air inlets 11 are provided on the top of the housing 10, and each air inlet 11 is correspondingly provided with a wind shield 20. The wind shield 20 is pivotally connected to the housing 10, and the air conditioner indoor unit 1 is provided with a driving motor connected to the rotating shaft of the wind shield 20 to drive the wind shield 20 to rotate.

[0055] The wind deflector 20 has a fully open position, a closed position, and a first intermediate position, a second intermediate position, and a third intermediate position between the fully open position and the closed position. Figure 1 As shown, when the wind shield 20 is in the closed position, the wind shield 20 covers the entire air inlet 11, thereby closing the air inlet 11. Figure 2 As shown, when the wind shield 20 is in the fully open position, the wind shield 20 is perpendicular to the plane where the air inlet 11 is located, so that the air inlet 11 obtains the maximum air intake volume.

[0056] It should be noted that the wind shield 20 in the fully open position may be perpendicular to the plane where the air inlet 11 is located, or may be slightly deviated from the position perpendicular to the plane where the air inlet 11 is located.

[0057] Reference Figure 3 As shown, when the wind shield 20 is in the first intermediate position, the projection of the wind shield 20 on the plane where the air inlet 11 is located is greater than the projection of the wind shield 20 in the fully open position on the plane where the air inlet 11 is located. In other words, the angle between the wind shield 20 in the first intermediate position and the plane where the air inlet 11 is located is smaller than the angle between the wind shield 20 in the fully open position and the plane where the air inlet 11 is located. As a result, the gap between the wind shield 20 in the first intermediate position and the plane where the air inlet 11 is located is smaller, and further, the air intake of the air inlet 11 when the wind shield 20 is in the first intermediate position is smaller than the air intake when the wind shield 20 is in the fully open position.

[0058] Furthermore, the second intermediate position is located between the first intermediate position and the closed position. Similarly, when the wind shield 20 is in the second intermediate position, the projection of the wind shield 20 on the plane where the air inlet 11 is located is greater than the projection of the wind shield 20 in the first intermediate position on the plane where the air inlet 11 is located. In other words, the angle between the wind shield 20 in the second intermediate position and the plane where the air inlet 11 is located is smaller than the angle between the wind shield 20 in the first intermediate position and the plane where the air inlet 11 is located. As a result, the gap between the wind shield 20 in the second intermediate position and the plane where the air inlet 11 is located is smaller, and the air intake of the air inlet 11 when the wind shield 20 is in the second intermediate position is smaller than the air intake when the wind shield 20 is in the first intermediate position.

[0059] Further, the third intermediate position is located between the second intermediate position and the closed position. When the wind shield 20 is in the third intermediate position, the projection of the wind shield 20 on the plane where the air inlet 11 is located is greater than the projection of the wind shield 20 in the second intermediate position on the plane where the air inlet 11 is located. In other words, the angle between the wind shield 20 in the third intermediate position and the plane where the air inlet 11 is located is smaller than the angle between the wind shield 20 in the second intermediate position and the plane where the air inlet 11 is located. As a result, the gap between the wind shield 20 in the third intermediate position and the plane where the air inlet 11 is located is smaller, and the air intake of the air inlet 11 when the wind shield 20 is in the third intermediate position is smaller than the air intake when the wind shield 20 is in the second intermediate position.

[0060] The driving motor drives the wind shield plate 20 to rotate relative to the housing 10, so as to switch between a fully open position, a first intermediate position, a second intermediate position, a third intermediate position and a closed position.

[0061] It should be noted that the number of the air inlets 11 on the housing 10 can be any number as long as the size is reasonable.

[0062] In addition, it should be noted that the wind shield 20 may also be slidably connected to the housing 20 , so as to change the air intake volume of the air inlet 11 .

[0063] Figure 4 is a schematic block diagram of an air-conditioning indoor unit 1 according to an embodiment of the present invention.

[0064] Reference Figure 4 As shown, the air-conditioning indoor unit 1 further includes a controller 40, the controller 40 includes a memory 41 and a processor 42, the memory 41 stores an executable program, and the processor 42 can execute the program in the memory 41, thereby executing the control method in any of the following embodiments.

[0065] Figure 5 is a schematic flow chart of a control method of an air-conditioning indoor unit 1 according to an embodiment of the present invention.

[0066] like Figure 5 As shown, the control method of the air-conditioning indoor unit 1 may generally include:

[0067] Step S502, in response to the opening instruction, controlling the wind deflector to move to a fully open position.

[0068] Step S504, obtaining the indoor environment temperature.

[0069] Step S506, determining whether the difference between the indoor ambient temperature and the set temperature is less than a preset threshold, if so, executing step S508, if not, returning to step S504.

[0070] Step S508, controlling the wind deflector to move to a position between the fully open position and the closed position.

[0071] Specifically, when the air conditioner indoor unit 1 is not in use, the wind shield 20 is in the closed position and the air inlet 11 is closed. At the same time, the air outlet 12 is closed by the wind guide plate 30. When the air conditioner indoor unit 1 receives the user's opening instruction, the air outlet 12 is opened and the wind shield 20 is moved to the fully open position, that is, the air conditioner indoor unit 1 is in a normal working mode with the maximum air intake. The air conditioner indoor unit 1 obtains the indoor ambient temperature through the indoor temperature sensor, and determines whether the difference between the indoor ambient temperature and the user-set temperature is less than the preset threshold. If so, the wind shield 20 is moved to a position between the fully open position and the closed position, that is, the wind shield 20 is moved to a position that makes the air intake smaller.

[0072] For example, the preset threshold is 3 degrees. The user turns on the air conditioner and sets the temperature to 25 degrees. After the air conditioner indoor unit 1 is turned on, the wind shield 20 moves to the fully open position, and the air conditioner starts cooling. During this period, the indoor temperature sensor detects the indoor ambient temperature. When the indoor ambient temperature drops to 27 degrees, the difference between it and the set temperature of 25 degrees is less than 3 degrees. At this time, the wind shield 20 moves to a position between the fully open position and the closed position.

[0073] In the scheme of this embodiment, after the air conditioner indoor unit 1 is turned on, the air inlet 11 is first operated in a normal mode with a maximum air intake to quickly reduce the indoor temperature. When the difference between the indoor ambient temperature and the set temperature is less than a preset threshold, the wind shield 20 is controlled to move to a position between the fully open position and the closed position, reducing the air intake of the air inlet 11, and then reducing the air outlet of the air conditioner indoor unit 1. In other words, when the wind temperature is low, the wind force and air volume are reduced, so that the wind blown out by the air conditioner indoor unit 1 is more comfortable and reduces the discomfort caused to the user. Therefore, by using the wind shield 20 to reduce the air intake of the air inlet 11, an effect similar to that of preventing direct blowing is achieved, but there is no need to block the air outlet 12, thereby avoiding the problem of condensation while ensuring comfort.

[0074] It should be noted that the preset threshold can be set as needed, such as 4 degrees, 3.6 degrees, 3 degrees, 2.5 degrees, etc.

[0075] In addition, it should be noted that the indoor ambient temperature may be obtained and calculated at regular intervals or may be obtained and calculated continuously.

[0076] Figure 6 1 is a schematic flowchart of the steps of controlling the wind shield to move to a position between the fully open position and the closed position in the control method of the air conditioner indoor unit 1 according to one embodiment of the present invention. Figure 7 1 is a schematic flowchart of the step of controlling the wind shield to move to a position between a first intermediate position and a closed position according to the evaporator temperature in a control method of an air conditioner indoor unit 1 according to an embodiment of the present invention.

[0077] like Figure 6 As shown, step S508, the step of controlling the wind deflector to move to a position between the fully open position and the closed position generally includes:

[0078] Step S602, in response to the difference between the indoor ambient temperature and the set temperature being less than a preset threshold, controlling the wind shield to move to a first intermediate position. Specifically, when the difference between the indoor ambient temperature and the set temperature is less than the preset threshold, controlling the wind shield 20 to move to the first intermediate position, so that the air intake of the air inlet 11 is reduced compared to the air intake when the wind shield 20 is in the fully open position.

[0079] Step S604, determining whether the operation time of the indoor unit of the air conditioner after the wind shield moves to the first middle position reaches a preset time, if so, executing step S606; if not, executing step S608.

[0080] Step S606, controlling the wind shield to move to a position between the first middle position and the closed position according to the evaporator temperature of the air conditioner indoor unit.

[0081] Step S608, maintaining the current working mode.

[0082] Specifically, after the wind shield 20 moves to the first intermediate position, the operation time of the air conditioner indoor unit 1 when the wind shield 20 is in the first intermediate position is recorded. When the operation time reaches the preset time, step S606 is executed. If the operation time does not reach the preset time, the current working mode is maintained, that is, the working state of maintaining the wind shield 20 in the first intermediate position.

[0083] The preset time can be set as needed, for example, 2 minutes, 2.5 minutes, 3 minutes, etc.

[0084] Reference Figure 7 As shown, specifically, step S606, controlling the wind shield to move to a position between the first intermediate position and the closed position according to the evaporator temperature of the air conditioner indoor unit includes:

[0085] Step S702, obtaining the real-time evaporator temperature of the air conditioner indoor unit.

[0086] Step S704, obtaining the difference between the evaporator temperature when the wind shield moves to the first intermediate position and the real-time evaporator temperature.

[0087] Step S706: if the difference between the evaporator temperature when the wind shield moves to the first intermediate position and the real-time evaporator temperature is greater than the first preset value and less than the second preset value, control the wind shield to move to the second intermediate position.

[0088] Step S708: If the difference between the evaporator temperature when the wind shield moves to the first intermediate position and the real-time evaporator temperature is greater than or equal to the second preset value and less than the third preset value, control the wind shield to move to the third intermediate position.

[0089] Specifically, after the wind shield 20 moves to the first intermediate position, the evaporator temperature of the air conditioner indoor unit 1 at this time is recorded and recorded as T0. Because the air intake of the air inlet 11 decreases after the wind shield 20 moves to the first intermediate position, the evaporator temperature will drop to a certain extent. Thereafter, the real-time evaporator temperature of the air conditioner indoor unit 1 is continuously obtained, and the position of the wind shield 20 is adjusted according to the difference between T0 and the real-time evaporator temperature. When the difference between T0 and the real-time evaporator temperature is greater than the first preset value and less than the second preset value, the wind shield 20 is controlled to move to the second intermediate position. When the difference between T0 and the real-time evaporator temperature is greater than the second preset value and less than the third preset value, the wind shield 20 is controlled to move to the second intermediate position.

[0090] Exemplarily, the preset time is 2 minutes, the first preset value is 0, the second preset value is X2, and the third preset value is X3. When the wind shield 20 moves to the first middle position, the evaporator temperature T0 of the air-conditioning indoor unit 1 at this time is recorded, and the running time of the air-conditioning indoor unit 1 is recorded, when the running time of the air-conditioning indoor unit 1 after the wind shield 20 moves to the first middle position reaches 2 minutes. The real-time evaporator temperature of the indoor unit is obtained. When the real-time evaporator temperature minus T0 is greater than 0 and less than X2, the wind shield 20 is controlled to move to the second middle position. When the real-time evaporator temperature minus T0 is greater than or equal to X2 and less than X3, the wind shield 20 is controlled to move to the third middle position. In other words, the wind shield 20 will first move to the second middle position, and then move to the third middle position as the evaporator temperature further decreases.

[0091] It is understood by those skilled in the art that the evaporator temperature will decrease to a certain extent due to the decrease in the air volume of the air inlet 11. Therefore, the wind shield 20 is controlled to move to the second middle position and the third middle position according to the evaporator temperature, that is, the air volume of the air inlet 11 is further reduced when the evaporator temperature decreases.

[0092] In other words, the lower the outlet air temperature, the smaller the air intake volume, thereby avoiding the discomfort caused by the wind with too low a temperature to the user and further improving the comfort of the air outlet. Correspondingly, although the air outlet volume is small, the outlet air temperature is also lower, so it is beneficial to ensure the cooling effect while maintaining comfort. In addition, by using the difference in evaporator temperature for adjustment, the deviation between the real-time evaporator temperature and the normal evaporator temperature at the current set temperature can be more accurately determined, which is more helpful to ensure the normal operation of the evaporator.

[0093] It should be noted that in some other embodiments of the present application, step S604 may not be provided, that is, the evaporator temperature is directly obtained after the wind shield 20 moves to the first intermediate position. Under this condition, the first preset value should be set to a value greater than 0 to ensure the operation time of the wind shield 20 in the first intermediate position.

[0094] It should also be noted that, in some other embodiments of the present application, the wind deflector 20 may be adjusted by directly comparing the real-time temperature of the evaporator with the preset temperature value.

[0095] In addition, it should be noted that in some other embodiments of the present application, the wind shield 20 may also have only a first middle position and a second middle position.

[0096] Although not shown in the figure, in one embodiment, after step S708, the following steps are included: if the difference between the evaporator temperature when the wind shield moves to the first intermediate position and the real-time evaporator temperature is greater than or equal to the third preset value, the wind shield is controlled to move to the second intermediate position. In other words, when the evaporator temperature is too low, the wind shield 20 is returned to the second intermediate position to increase the air intake volume, so that the evaporator is properly heated, thereby preventing the evaporator from being overcooled.

[0097] It should be noted that the wind deflector may also be controlled to move to the first intermediate position, that is, the wind deflector may be controlled to move to any position between the third intermediate position and the fully open position.

[0098] In addition, it should be noted that, in the embodiment with only the first middle position and the second middle position, the evaporator may return to the first middle position when the evaporator temperature is low.

[0099] Figure 8 FIG. 1 is a schematic flow chart of a control method of an air conditioner indoor unit 1 according to another embodiment of the present invention. In this embodiment, the control method of the air conditioner indoor unit 1 generally includes:

[0100] Step S802, in response to the opening instruction, controlling the wind deflector to move to a fully open position.

[0101] Step S804, obtaining the indoor ambient temperature.

[0102] Step S806, determining whether the difference between the indoor ambient temperature and the set temperature is less than a preset threshold, if so, executing step S808, if not, returning to step S804.

[0103] Step S808, controlling the wind deflector to move to a position between the fully open position and the closed position.

[0104] Step S810, determine whether the difference between the indoor ambient temperature and the set temperature is greater than or equal to a preset threshold, if so, execute step S812, if not, execute step S814.

[0105] Step S812, controlling the wind deflector to move to the fully open position.

[0106] Step S814, maintaining the current working mode.

[0107] Specifically, in the process of adjusting the position of the wind shield 20 between the fully open position and the closed position, the indoor ambient temperature is obtained in real time, and the difference between the indoor ambient temperature and the set temperature is obtained. If the difference between the indoor ambient temperature and the set temperature is greater than a preset threshold, it means that the cooling efficiency of the current air intake may not achieve the cooling effect.

[0108] Therefore, by controlling the wind shield 20 to move to the fully open position when the difference between the indoor ambient temperature and the set temperature is greater than or equal to the preset threshold, the air intake of the air conditioner indoor unit 1 can be restored to a normal level. This can avoid the situation where the indoor temperature rises due to the indoor cooling rate not meeting the requirement due to the reduced air intake, so that the indoor ambient temperature can be maintained within a temperature range close to the set temperature, thereby maintaining a suitable temperature for the indoor environment.

[0109] It should be noted that, in some other embodiments of the present application, there may be only one intermediate position between the fully open position and the closed position, that is, the wind deflector 20 is only switched between three positions.

[0110] Reference Figure 2 and Figure 3 As shown, in one embodiment, the step of controlling the wind deflector to move to a position between the fully open position and the closed position comprises:

[0111] The air guide plate of the indoor unit of the air conditioner is controlled to rotate upward so that the position of one end of the air guide plate away from the air outlet is higher than the position of the other end of the air guide plate away from the air outlet when the wind shield is in the fully open position.

[0112] Specifically, refer to Figure 2 As shown, when the air conditioner indoor unit 1 receives the opening command, the wind shield 20 moves to the fully open position, and the wind guide plate 30 moves to the first working position. Figure 3 As shown, when the difference between the indoor ambient temperature and the set temperature is less than the preset threshold, the wind shield 20 is controlled to move to a position between the fully open position and the closed position, and the wind guide plate 30 is controlled to move to the second working position. The position of the end of the wind guide plate 30 away from the air outlet 12 in the second working position is higher than the position of the end of the wind guide plate 30 away from the air outlet 12 in the first working position.

[0113] That is to say, the wind guide plate 30 in the second working position can guide the wind blown out of the air outlet 12 to a higher direction. Because after the wind shield 20 moves to a position between the fully open position and the closed position, the evaporator temperature will be reduced to a certain extent. Therefore, by rotating the wind guide plate 30 upward, the wind guide plate 30 can guide the airflow with a lower wind temperature to a higher direction. In this way, it can better prevent the lower temperature airflow from blowing towards the user, further improving comfort.

[0114] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived based on the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all these other variations or modifications.

Claims

1. A control method for an air conditioner indoor unit, the air conditioner indoor unit comprising a wind shield disposed at an air inlet, the wind shield having a fully open position, a closed position, a first intermediate position between the fully open position and the closed position, and a second intermediate position between the first intermediate position and the closed position, the wind shield in the closed position sealing the air inlet, the control method include: In response to an opening instruction, controlling the wind deflector to move to the fully open position; Get the indoor ambient temperature; Determine whether the difference between the indoor ambient temperature and the set temperature is less than a preset threshold value, if so, control the wind shield to move to a position between the fully open position and the closed position, if not, return to the step of obtaining the indoor ambient temperature; The step of controlling the wind shield to move to a position between the fully open position and the closed position comprises: in response to the difference between the indoor ambient temperature and the set temperature being less than a preset threshold, controlling the wind shield to move to the first intermediate position; Controlling the wind shield to move to a position between the first intermediate position and the closed position according to the evaporator temperature of the air conditioner indoor unit includes: Obtaining the real-time evaporator temperature of the air conditioner indoor unit; acquiring a difference between the evaporator temperature when the wind shield moves to the first intermediate position and the real-time evaporator temperature; If the difference between the evaporator temperature when the wind shield moves to the first intermediate position and the real-time evaporator temperature is greater than a first preset value and less than a second preset value, the wind shield is controlled to move to the second intermediate position.

2. The control method of the air conditioner indoor unit according to claim 1, in, The wind deflector has a third intermediate position between the second intermediate position and the closed position; The step of controlling the wind shield to move to a position between the first intermediate position and the closed position according to the evaporator temperature of the air conditioner indoor unit comprises: If the difference between the evaporator temperature when the wind shield moves to the first intermediate position and the real-time evaporator temperature is greater than or equal to the second preset value and less than the third preset value, the wind shield is controlled to move to the third intermediate position.

3. The control method of the air conditioner indoor unit according to claim 2, in, The step of controlling the wind deflector to move to the third intermediate position comprises: If the difference between the evaporator temperature when the wind shield moves to the first intermediate position and the real-time evaporator temperature is greater than or equal to the third preset value, the wind shield is controlled to move to the second intermediate position.

4. The control method of the air conditioner indoor unit according to claim 1, in, The step of controlling the wind shield to move to a position between the first intermediate position and the closed position according to the evaporator temperature of the air conditioner indoor unit includes: Determine whether the running time of the air-conditioning indoor unit after the wind deflector moves to the first middle position reaches a preset time. If so, execute the step of controlling the wind deflector to move to a position between the first middle position and the closed position according to the evaporator temperature of the air-conditioning indoor unit; if not, maintain the current working mode.

5. The control method of the air conditioner indoor unit according to claim 1, in, The step of controlling the wind deflector to move to a position between the fully open position and the closed position then comprises: The air guide plate at the air outlet of the air conditioner indoor unit is controlled to rotate upward so that the position of one end of the air guide plate away from the air outlet is higher than the position of one end of the air guide plate away from the air outlet when the wind shield is in the fully open position.

6. The control method of the air conditioner indoor unit according to claim 1, in, The step of controlling the wind deflector to move to a position between the fully open position and the closed position then comprises: Determine whether the difference between the indoor ambient temperature and the set temperature is greater than or equal to the preset threshold value. If so, control the wind shield to move to the fully open position; if not, maintain the current working mode.

7. An air conditioner indoor unit, include: a housing formed with an air inlet; a wind deflector disposed at the air inlet, having a fully open position and a closed position, and the wind deflector can be moved to a position between the fully open position and the closed position to change the air intake volume of the air inlet; A controller comprising a memory and a processor, wherein the memory stores a machine executable program, and when the machine executable program is executed by the processor, the control method of the air conditioner indoor unit according to any one of claims 1 to 6 is implemented.

8. The air conditioner indoor unit according to claim 7, in, The wind deflector is pivotally connected to the housing so as to be switched between different positions by rotating relative to the housing.

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