Air conditioner and control method thereof

Abstract

The application provides an air conditioner and a control method thereof. The air conditioner comprises a guide device for adjusting the pitch angle of air outflow. The air conditioner is provided with a conventional mode and a whole-house mode. Based on the same set temperature, the fan rotating speed and / or the compressor frequency in the whole-house mode is greater than that in the conventional mode. When the whole-house mode is executed, the following steps are included: receiving a whole-house mode opening instruction; starting the refrigeration operation in the whole-house mode and continuing for a preset time; detecting the indoor real-time temperature T2 after the preset time, and calculating the difference between the indoor initial temperature T1 before the whole-house mode is opened and the indoor real-time temperature T2; if T1-T2≤A, A is a preset first temperature difference, the refrigeration operation in the whole-house mode is continuously executed; if T1-T2>A, the air supply operation and the refrigeration operation in the whole-house mode are alternately executed in a cycle. The application realizes the intelligent refrigeration of other rooms by using the air conditioner of a certain room, and the refrigeration speed is faster and the energy consumption is lower.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of air conditioning technology, in particular to an air conditioner and a control method thereof. BACKGROUND

[0002] For a family using a split type household air conditioner, each room should be matched with a respective air conditioner. However, due to various factors, some users may use the air conditioner of a certain room to cool other rooms. For example, some users may use the air conditioner of a living room to cool a bedroom in order to avoid being directly blown by cold wind when sleeping. In addition, indoor areas such as kitchens and bathrooms are usually not provided with air conditioners, and some users may also turn on the air conditioner of the living room to cool these areas.

[0003] However, the number of air conditioners is selected according to the area of the house, and in the conventional mode of the air conditioner, the cooling capacity can only meet the cooling demand of the room, and the cooling radiation capacity for other rooms is insufficient, and the effect of using the air conditioner of a certain room to cool other rooms or the whole house is usually not satisfactory. SUMMARY

[0004] The present application aims to at least solve one of the above-mentioned defects in the prior art, and provides an air conditioner and a control method thereof to realize whole house cooling using the air conditioner of a certain room.

[0005] The purpose of the present application is to realize the automation and intelligentization of the whole house mode, improve the cooling speed, and reduce the power consumption.

[0006] In one aspect, the present application provides a control method of an air conditioner, the air conditioner comprising a guide device for adjusting the pitch angle of the air flow, the air conditioner being pre-set with a conventional mode and a whole house mode; based on the same set temperature Ts, the fan speed and / or the compressor frequency of the cooling operation in the whole house mode is greater than the fan speed and / or the compressor frequency of the cooling operation in the conventional mode; when the whole house mode is executed, the following steps are included:

[0007] receiving a whole house mode start instruction;

[0008] starting the cooling operation in the whole house mode and continuing for a preset time;

[0009] after the preset time, detecting the indoor real-time temperature T2 and calculating the difference between the indoor initial temperature T1 at the start time of the whole house mode and the indoor real-time temperature T2;

[0010] if T1-T2≤A, A is a preset first temperature difference, the cooling operation in the whole house mode is continued;

[0011] If T1-T2>A, the blowing operation and the refrigeration operation in the whole-house mode are alternately executed in a cycle.

[0012] Optionally, the step of starting the refrigeration operation in the whole-house mode and lasting for a preset time comprises:

[0013] Obtaining the set temperature Ts;

[0014] According to the temperature difference grade where the difference between T2 and Ts is located, the increase value of the fan speed and / or the compressor frequency of the refrigeration operation in the whole-house blowing mode relative to the refrigeration operation in the regular mode based on the same set temperature is determined; the higher the temperature difference grade is, the greater the corresponding increase value is.

[0015] Optionally, the step of determining the increase value of the fan speed and the compressor frequency according to the temperature difference grade where the difference between T2 and Ts is located comprises:

[0016] If T2-Ts<3℃, the increase value of the fan speed is between 40 revolutions and 60 revolutions, and the increase value of the compressor frequency is between 4 Hz and 6 Hz;

[0017] If 3℃≤T2-Ts≤5℃, the increase value of the fan speed is between 90 revolutions and 110 revolutions, and the increase value of the compressor frequency is between 9 Hz and 11 Hz;

[0018] If T2-Ts≥5℃, the increase value of the fan speed is between 140 revolutions and 160 revolutions, and the increase value of the compressor frequency is between 14 Hz and 16 Hz.

[0019] Optionally, the target temperature for the refrigeration operation in the whole-house mode is Tm, and Tm

[0020] Optionally, the step of starting the refrigeration operation in the whole-house mode and lasting for a preset time comprises:

[0021] Obtaining the set temperature Ts;

[0022] According to the temperature difference grade where the difference between T2 and Ts is located, the decrease value of Tm relative to Ts is determined; the higher the temperature difference grade is, the greater the corresponding decrease value is.

[0023] Optionally, the step of determining the decrease value of Tm relative to Ts according to the temperature difference grade where the difference between T2 and Ts is located comprises:

[0024] If T2-Ts<3℃, 0.5≤Ts-Tm<1.5;

[0025] If 3℃≤T2-Ts≤5℃, 1.5≤Ts-Tm<2.5;

[0026] If T2-Ts≥5℃, then 2.5≤Ts-Tm≤3.5.

[0027] Optionally, the preset time is divided into a plurality of time periods.

[0028] In a first time period, the wind guide angle of the wind guide device is controlled to be a first elevation angle.

[0029] In a second time period after the first time period, the wind guide angle of the wind guide device is controlled to decrease from the first elevation angle to a second elevation angle.

[0030] In a third time period after the second time period, the wind guide device is controlled to swing back and forth between the first elevation angle and the second elevation angle.

[0031] Optionally, the first elevation angle is a maximum elevation angle of the wind guide device.

[0032] Optionally, the steps of alternately performing the cooling operation and the air supply operation in the whole-house mode include: controlling the wind guide device to swing back and forth between the first elevation angle and a third elevation angle, the third elevation angle being smaller than the second elevation angle, and controlling a left-right swing device of the air conditioner to swing back and forth left and right.

[0033] Optionally, in T1-T2

[0034] Optionally, the second time period and the third time period are shorter than the first time period.

[0035] Optionally, when the air supply operation is performed, the compressor operates at a limit minimum frequency.

[0036] In another aspect, the present application also provides an air conditioner, comprising:

[0037] a housing having an air outlet;

[0038] a wind guide plate for adjusting the pitch angle of air flow of the air outlet; and

[0039] a controller including a processor and a memory, the memory storing a computer program, the computer program being executed by the processor to implement the control method according to any one of the above.

[0040] The control method of the air conditioner of the present application particularly provides a normal mode and a whole house mode. When the user normally uses the air conditioner, the air conditioner runs in the normal mode by default. When the user needs to use the air conditioner of a room to cool other rooms, the whole house mode can be selected to be turned on. Based on the same set temperature of the user, the fan speed and / or the compressor frequency of the whole house mode during cooling operation are higher than those of the normal mode, so that large cooling capacity output is quickly achieved. After a preset time, whether to continue the cooling operation of the whole house mode is determined according to the difference between the real-time indoor temperature and the initial indoor temperature. If the temperature difference is large, it indicates that the cooling effect is obvious, and the cooling operation and the air supply operation are switched to be alternately performed, so as to reduce the energy consumption of the air conditioner.

[0041] Further, in the control method of the air conditioner of the present application, when the whole house mode is in cooling operation (for a preset time), the operation period is divided into multiple time periods, and the air guide angle of the air guide device in different time periods is finely designed, so that the cold air of the air conditioner can take into account the rooms and other spaces in the room, and the uniform distribution of cooling capacity in the whole house is achieved. In the initial stage (first time period), the air is supplied at a large angle of elevation, the cold air is blown to the roof as much as possible, the air supply distance is the farthest, and the remote rooms are quickly cooled. In the middle stage (second time period), the air is supplied at a large angle of elevation, and the air supply distance is far. In the final stage (third time period), the air is supplied at a small angle of elevation, so that the temperature of each part of the room is more uniform.

[0042] Further, the control method of the air conditioner of the present application fully considers the problem that the space far away from the air conditioner is weakly affected by the cold air of the air conditioner, and particularly makes the cooling target temperature of the cooling operation in the whole house mode less than the set temperature of the user, so that after the room where the air conditioner is located reaches the target temperature, other rooms outside the room can reach the set temperature, thereby meeting the psychological expectation of the user.

[0043] The above and other objects, advantages and features of the present application will become more apparent from the following detailed description of some embodiments thereof, when taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0044] Some specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar components or parts. It should be understood by those skilled in the art that the drawings are not necessarily drawn to scale. In the drawings:

[0045] Figure 1 is a schematic view of an air conditioner according to an embodiment of the present application when the air guide angle is a first angle of elevation;

[0046] Figure 2 is a schematic view of the air conditioner shown in Figure 1 is a schematic view of the air conditioner shown in

[0047] Figure 3 is Figure 1 a schematic view of the air conditioner shown in FIG. 1 when the air guide angle is a third elevation angle;

[0048] Figure 4 is a schematic block diagram of an air conditioner according to an embodiment of the present application;

[0049] Figure 5 is a flowchart of a control method of an air conditioner according to an embodiment of the present application;

[0050] Figure 6 is a flowchart of a cooling operation in a whole house mode in a control method according to an embodiment of the present application;

[0051] Figure 7 is a flowchart of a cooling operation in a whole house mode in a control method according to another embodiment of the present application;

[0052] Figure 8 is a flowchart of a control method of an air conditioner according to an embodiment of the present application. DETAILED DESCRIPTION

[0053] An air conditioner and a control method of the air conditioner are provided according to embodiments of the present application.

[0054] Figure 1 is a schematic view of an air conditioner according to an embodiment of the present application when the air guide angle is a first elevation angle; Figure 2 is Figure 1 a schematic view of the air conditioner shown in FIG. 1 when the air guide angle is a second elevation angle; Figure 3 is Figure 1 a schematic view of the air conditioner shown in FIG. 1 when the air guide angle is a third elevation angle; Figure 4 is a schematic block diagram of an air conditioner according to an embodiment of the present application.

[0055] The air conditioner according to embodiments of the present application can be a wall-mounted air conditioner, a stand-type air conditioner, or other forms of air conditioners, Figures 1 to 3 is an embodiment of a wall-mounted air conditioner. As shown in FIG. 2, Figures 1 to 4 Generally, the air conditioner according to embodiments of the present application can include a housing 10, an air guide device 50, and a controller 700.

[0056] The housing 10 is provided with an air outlet 12 for producing cold air. Referring to Figure 1The heat exchanger 30 and the fan 40 can be arranged in the shell 10. The top of the shell 10 can be provided with an air inlet 11. The heat exchanger 30, the throttling device, the compressor 60, the condenser and other refrigeration elements arranged in the outdoor unit of the air conditioner are connected by pipelines to form a vapor compression refrigeration cycle system. Under the action of the fan 40, indoor air enters the interior of the shell 10 through the air inlet 11, and after forced convection heat exchange with the heat exchanger 30, forms heat exchange air and enters the air duct 20, and then is blown to the indoor through the air outlet 12 to adjust the indoor air.

[0057] The air guide device 50 is used to adjust the pitch angle of the air flow of the air outlet 12. The pitch angle refers to the included angle between the air outlet direction and the horizontal direction. When the air flow is blown upward, the included angle with the horizontal direction is the elevation angle. When the air flow is blown forward along the horizontal direction, the included angle with the horizontal direction is 0, which can also be defined as the elevation angle of 0°. When the air flow is blown forward downward, the included angle with the horizontal direction is the depression angle. As shown in the three states, Figures 1 to 3 As shown in the three states, Figures 1 to 3 The air guide device 50 is an air guide plate rotatably arranged in the shell 10. In some alternative embodiments, the air guide device can also be other forms,

[0058] The air conditioner can also include a left-right air swing device 80 for guiding the left-right direction of the air flow and capable of left-right air swing. In some embodiments, the left-right air swing device 80 can include a plurality of swing leaves that can be linked and rotated.

[0059] The controller 700 includes a processor 720 and a memory 710, and the memory 710 stores a computer program 711 which is executed by the processor 720 to implement the control method of the air conditioner of any embodiment of the present application. The control method of the air conditioner of the embodiment of the present application will be described in detail below. Figures 5 to 8 The control method of the air conditioner of the embodiment of the present application will be described in detail below.

[0060] Figure 5 is a schematic diagram of the control method of the air conditioner according to an embodiment of the present application; Figure 6 is a flowchart of the refrigeration operation in the whole house mode in the control method of an embodiment of the present application; Figure 7 is a flowchart of the refrigeration operation in the whole house mode in the control method of another embodiment of the present application; Figure 8 is a flowchart of the control method of the air conditioner according to an embodiment of the present application.

[0061] The control method of the air conditioner of the embodiment of the present application is used to control the air conditioner of each embodiment of the present application. The air conditioner of the present application is preset with a normal mode and a whole house mode. When the user normally uses the air conditioner, the air conditioner defaults to run in the normal mode. When the user needs to use the air conditioner of a certain room to cool other rooms, the whole house mode can be selected to be turned on. Specifically, a "whole house mode" button can be arranged on the remote controller of the air conditioner or other remote control equipment (for example, a mobile phone with an air conditioner control program) or a control panel on the air conditioner body. When the user does not press the button, the air conditioner runs in the normal mode. When the user presses the button, the controller 700 of the air conditioner receives the instruction to turn on the whole house mode. Of course, the remote controller of the air conditioner and the like can also be provided with a button to exit the "whole house mode" so as to exit the "whole house mode" at any time.

[0062] It can be understood that, regardless of the normal mode or the whole house mode, the user should input a set temperature Ts according to his own needs by using the remote controller or other means, that is, a certain temperature value that the user hopes to achieve in the indoor environment, for example, 27°C. Based on the same set temperature Ts, the fan speed and / or the compressor frequency in the whole house mode are greater than the fan speed and / or the compressor frequency in the normal mode. The "cooling operation in the whole house mode" is a selectable sub-mode of the "whole house mode", and it is not necessary that the "cooling operation in the whole house mode" is run throughout the whole running cycle of the "whole house mode". "And / or" means that both the fan speed and the compressor frequency in the whole house mode are increased, or only one of them is increased. In the preferred embodiment, both of them are increased. As shown in the figure, Figure 5 The control method of the embodiment of the present application includes the following steps when the whole house mode is executed:

[0063] Step S502: Receive the whole house mode opening instruction. As described above, the opening instruction is issued by the user to the air conditioner through the remote controller or other means. The opening instruction can be issued to the air conditioner from the start of the air conditioner to the end of the whole running process, so that the air conditioner enters the whole house mode. That is, the air conditioner can be immediately controlled to enter the whole house mode when it is started, or the air conditioner can be switched to the whole house mode after a certain period of time in the normal mode.

[0064] Step S504: Start the cooling operation in the whole house mode and continue for a preset time t. That is, after the air conditioner receives the whole house mode opening instruction, it enters the "cooling operation in the whole house mode" and starts timing. As described above, in the "cooling operation in the whole house mode", the fan speed and / or the compressor frequency are increased compared with the cooling operation in the normal mode, so that the air conditioner has a larger cooling capacity and a faster cooling speed. The preset time t can be 20 minutes.

[0065] Step S506: After the preset time t, the indoor real-time temperature T2 is detected, and the difference between the initial indoor temperature T1 at the time when the whole-house mode is started and the indoor real-time temperature T2 is calculated to determine the cooling effect of the whole-house mode at the preset time t. The greater the temperature difference, the better the cooling effect. The air conditioner can be provided with an ambient temperature sensor 300 to detect T1 and T2,

[0066] Step S508: Determine whether T1-T2>A is true, where A is a preset first temperature difference. Specifically, the value range of A can be 4℃≤A≤6℃, and more specifically, A=5℃.

[0067] Step S510: If T1-T2>A is true, the air supply operation and the cooling operation in the whole-house mode are alternately executed in a cycle. Since T1-T2>A, the temperature difference is already relatively large, and there is no need to run the cooling at full capacity. The air supply operation and the cooling operation are alternately executed. For example, the air conditioner is operated in the air supply mode for t1 time, in the cooling mode for t2 time, and then in the air supply mode for t1 time, and so on. t1 can be greater than t2, for example, t1=5min and t2=10min.

[0068] In the air supply operation, the energy consumption of the compressor is zero or very small, thereby saving the power consumption of the air conditioner. In some embodiments, when the "air supply operation" is executed, the compressor is stopped and only the fan is used to supply air to deliver the residual heat of the evaporator to the indoor environment. In preferred embodiments, when the air supply operation is executed, the compressor is operated at the lowest limit frequency as long as the compressor does not stop. Because the motor power of the compressor is large when it starts, the energy consumption of the compressor is greater than that when it is operated at the lowest limit frequency.

[0069] Step S512: If T1-T2≤A is not true, it means that the temperature difference is too small and the cooling requirement has not been met. Therefore, the "cooling operation in the whole-house mode" is continued to further lower the indoor temperature. Of course, during the execution of step S512, the air conditioner continues to monitor T2 and continuously determines the relationship between the difference between T1 and T2 and A. Once T1-T2>A is met, step S510 is executed immediately.

[0070] The control method of the air conditioner of the embodiment of the present application is characterized in that, based on the same set temperature of the user, the fan speed and / or the compressor frequency during the cooling operation in the whole-house mode is higher than that in the conventional mode, so as to quickly output large cooling capacity and enable the room where the air conditioner is located and other rooms to be cooled to be quickly impacted by cold air. After a preset time t, it is determined whether to continue the cooling operation in the whole-house mode according to the difference between the real-time indoor temperature and the initial indoor temperature. If the temperature difference is large, it indicates that the large cooling capacity cooling effect is obvious, and the cooling operation and the air supply operation can be alternately performed to slightly reduce the cooling capacity and the energy consumption of the compressor. In this way, the control method of the present application realizes the whole-house cooling by using a certain air conditioner, realizes automation and intelligence, improves the cooling speed, and reduces the power consumption.

[0071] In some embodiments, as shown in FIG. 5, the step S504 of “starting the cooling operation in the whole-house mode and lasting for a preset time” includes: Figure 6

[0072] Step S602: Obtain the set temperature Ts. As described above, the Ts refers to the indoor temperature value that the user expects to finally reach, which is input by the user through the remote controller or other ways.

[0073] Step S604: Calculate the difference between T2 and Ts, and determine the increase value of the fan speed and / or the compressor frequency of the cooling operation in the whole-house air supply mode based on the same set temperature relative to the fan speed and / or the compressor frequency of the cooling operation in the conventional mode according to the temperature difference range in which the difference between T2 and Ts is located. The higher the temperature difference range is, the greater the increase value is. It can be understood that when the increased fan speed and compressor frequency exceed the maximum limit of the fan speed or the maximum limit of the compressor frequency, the “cooling operation in the whole-house air supply mode” is operated at the maximum limit of the fan speed or the maximum limit of the compressor frequency.

[0074] For example, 3 temperature difference ranges can be preset. Specifically, the step of “determining the increase value of the fan speed and the compressor frequency according to the temperature difference range in which the difference between T2 and Ts is located” includes:

[0075] If T2-Ts<3℃, the increase value of the fan speed is between 40 revolutions and 60 revolutions, for example, 50 revolutions, and the increase value of the compressor frequency is between 4 Hz and 6 Hz, for example, 5 Hz.

[0076] If 3℃≤T2-Ts≤5℃, the increase value of the fan speed is between 90 revolutions and 110 revolutions, for example, 100 revolutions, and the increase value of the compressor frequency is between 9 Hz and 11 Hz, for example, 10 Hz.

[0077] ​If T2-Ts≥5℃, then the fan speed increase value is between 140 and 160, for example 150; the compressor frequency increase value is between 14 and 16, for example 15.

[0078] In some embodiments, the cooling target temperature in the "whole house mode cooling operation" is Tm, and TmTs. Tm refers to the target temperature value that the air conditioner in the whole house mode cooling operation is to achieve in the room where the air conditioner is located, which is the target parameter of the air conditioner operation. When the real-time indoor temperature T2 reaches Tm, it indicates that the purpose of the whole house mode cooling operation has been achieved, and the compressor is stopped or runs at the minimum frequency. The cooling target temperature in the normal mode is the set temperature Ts. In the embodiments of the application, TmTs is particularly set, because the inventors consider that in the whole house mode, the air conditioner not only supplies cold air to the room where it is located, but also supplies cold air to other rooms, and the rooms far away from the air conditioner are weakly affected by the air conditioner. If Tm=Ts, only the indoor temperature of the room where the air conditioner is located can reach Ts (the ambient temperature sensor 300 detects the indoor temperature of the room where the air conditioner is located), and the temperature of other rooms cannot reach Ts, that is, the user's expectation cannot be met. Therefore, in the embodiments of the application, TmTs is set, so that the indoor temperature of the room where the air conditioner is located is lower (reaches Tm), so that the temperature of other rooms can reach Ts or be closer to Ts, so as to meet the user's psychological expectation.

[0079] Specifically, as shown in Figure 7 the step of "starting the cooling operation in the whole house mode and lasting for a preset time" includes:

[0080] Step S702: obtaining the set temperature Ts.

[0081] Step S704: determining the reduction value of Tm compared to Ts according to the temperature difference range in which the difference between T2 and Ts is located, and the higher the temperature difference range, the greater the reduction value.

[0082] For example, 3 temperature difference ranges can be preset, and the step of "determining the reduction value of Tm compared to Ts according to the temperature difference range in which the difference between T2 and Ts is located" can include:

[0083] If T2-Ts<3℃, then 0.5≤Ts-Tm<1.5, preferably Ts-Tm=1.

[0084] If 3℃≤T2-Ts≤5℃, then 1.5≤Ts-Tm<2.5, preferably Ts-Tm=2.

[0085] If T2-Ts≥5℃, then 2.5≤Ts-Tm≤3.5, preferably Ts-Tm=3.

[0086] In some embodiments, the control method of the present application can also control the air guiding angle of the air guiding device 50 so that the air guiding angle in each period of the whole house mode is most reasonable, so that the cold air can take into account the room and other spaces in the room, realize the uniform distribution of cold energy in the whole house, and accelerate the cooling speed of the whole house and reduce the energy consumption of the air conditioner.

[0087] Specifically, the aforementioned preset time t can be divided into multiple time periods.

[0088] In the first time period, the air guiding angle of the air guiding device is controlled to be a first elevation angle a1, such as Figure 1 For example, the first time period can be the first 10 minutes of t, which belongs to the initial stage of cooling, and the air is sent at a large elevation angle to blow the cold air to the roof as far as possible to quickly cool the remote room. Preferably, the first elevation angle a1 is the maximum elevation angle of the air guiding device, that is, the maximum elevation angle that the air guiding device can reach.

[0089] In the second time period after the first time period, the air guiding angle of the air guiding device is controlled to decrease from the first elevation angle a1 to a second elevation angle a2, such as Figure 2 The second time period is the middle period, which can be less than the first time period, for example, it can be the 11th-15th minute of t, and the air sending elevation angle is slightly reduced to make the air sending distance longer.

[0090] In the third time period after the second time period, the air guiding device is controlled to swing between the first elevation angle a1 and the second elevation angle a2. The third time period is the final period, which can be less than the first time period, for example, it can be the 16th-20th minute of t to swing at a smaller elevation angle to make the temperature of each part of the room more uniform.

[0091] In addition, when the aforementioned "alternately performing the air sending operation and the cooling operation in the whole house mode" is performed, the air guiding device is controlled to swing between the first elevation angle a1 and a third elevation angle a3, the third elevation angle a3 is less than the second elevation angle a2, and the left-right swinging device 80 of the air conditioner is controlled to swing left and right. At this time, the cooling target is close to being achieved, and there is no need to focus on air sending to a certain area, so the up-down swinging angle is maximized, and left-right swinging is added to maximize the diffusion force of the air flow, so that the air flow is more uniformly diffused outward, and the temperature of each part of the room is uniformly reached to the preset target (Tm in some embodiments).

[0092] In the step of the aforementioned "T1-T2

[0093] In some optional embodiments, the air conditioner can achieve higher technical effects through further optimization and configuration of the above steps. The control method of the air conditioner in this embodiment will be described in detail in combination with the introduction of an optional execution flow of this embodiment. This embodiment is only an example of the execution flow, and in specific implementation, the execution order and running conditions of some steps can be modified according to specific implementation requirements.

[0094] As shown in Figure 8 , in a preferred embodiment of the present application, the control method of the air conditioner sequentially executes the following steps:

[0095] Step S802: Receive the whole-house mode start instruction.

[0096] Step S804: Obtain the set temperature Ts. Step S806: Start the cooling operation in the whole-house mode and continue for a preset time. During this period, according to the temperature difference range in which the difference between T2 and Ts is located, the increase values of the fan speed and the compressor frequency for the cooling operation in the whole-house air supply mode relative to the fan speed and the compressor frequency for the cooling operation in the conventional mode based on the same set temperature are determined, and the reduction value of the cooling target temperature Tm relative to Ts is determined.

[0097] The preset time is divided into multiple time periods; in the first time period, the guide air angle is controlled to be the first elevation angle a1; in the second time period, the guide air angle is controlled to decrease to the second elevation angle a2; and in the third time period, the guide air device is controlled to swing back and forth between the first elevation angle a1 and the second elevation angle a2.

[0098] Step S808: After the preset time t, detect the indoor real-time temperature T2 and calculate the difference between the indoor initial temperature T1 at the time when the whole-house mode is started and the indoor real-time temperature T2.

[0099] Step S810: Determine whether T1-T2>A is true, where A is a preset first temperature difference. Step S816: If true, that is, T1-T2>A, alternately execute the air supply operation and the cooling operation in the whole-house mode. And control the guide air device to swing back and forth between the first elevation angle a1 and the third elevation angle a3, and control the left-right swing device to swing back and forth left and right. Step S812: If not true, that is, T1-T2≤A, indicating that the temperature difference is too small and the cooling requirement has not been met. Therefore, continue to execute the "cooling operation in the whole-house mode" to further lower the indoor temperature. And control the guide air device to swing back and forth between the first elevation angle a1 and the second elevation angle a2.

[0100] Of course, during the execution of step S812, the air conditioner continues to monitor T2 and continuously determine the relationship between the difference between T1 and T2 and A. Once T1-T2>A is met, step S816 is immediately executed.

[0101] At this point, those skilled in the art will appreciate that although specific exemplary embodiments of the application have been described herein, the present application also encompasses many other variations or modifications in accordance with the principles of the application as set forth above. Accordingly, the scope of the present application should be understood to include all such variations and modifications.

Claims

1. A method for controlling an air conditioner, the air conditioner including an air guide device for adjusting the pitch angle of the airflow, the air conditioner having a preset normal mode and a whole-house mode; based on the same set temperature Ts, the fan speed and / or compressor frequency during cooling operation in the whole-house mode are greater than the fan speed and / or compressor frequency during cooling operation in the normal mode; the whole-house mode includes the following steps when executed: Receive command to activate whole-house mode; Start the cooling operation in the whole-house mode and continue for a preset time; After the preset time, the indoor real-time temperature T2 is detected, and the difference between the initial indoor temperature T1 and the real-time indoor temperature T2 at the moment the whole-house mode is turned on is calculated. If T1-T2≤A, where A is the preset first temperature difference, continue the cooling operation in the whole-house mode; If T1-T2>A, the air supply operation and the cooling operation in the whole house mode are executed alternately in a cycle; The target cooling temperature for the whole-house cooling operation is Tm, where Tm < Ts; The steps to start the cooling operation in the whole-house mode and continue for a preset time include: Obtain the set temperature Ts; Based on the temperature difference range where the difference between T2 and Ts is located, determine the decrease in Tm compared to Ts. The higher the temperature difference range, the greater the corresponding decrease. The steps to determine the decrease in Tm compared to Ts based on the temperature difference range where the difference between T2 and Ts falls include: If T2-Ts < 3℃, then 0.5 ≤ Ts-Tm < 1.5; If 3℃≤T2-Ts≤5℃, then 1.5≤Ts-Tm<2.5; If T2-Ts≥5℃, then 2.5≤Ts-Tm≤3.

5.

2. The control method according to claim 1, wherein the step of activating the cooling operation in the whole-house mode and continuing for a preset time includes: Obtain the set temperature Ts; Based on the temperature difference level of the difference between T2 and Ts, determine the increase in fan speed and / or compressor frequency in the whole-house cooling mode relative to the fan speed and / or compressor frequency in the conventional cooling mode, based on the same set temperature. The higher the temperature difference setting, the greater the corresponding increase.

3. The control method according to claim 2, wherein The steps to determine the increase in fan speed and compressor frequency based on the temperature difference range where the difference between T2 and Ts falls include: If T2-Ts < 3℃, then the increase in fan speed should be between 40 and 60 revolutions per minute, and the increase in compressor frequency should be between 4 Hz and 6 Hz. If 3℃≤T2-Ts≤5℃, then the increase in fan speed should be between 90 and 110 revolutions per minute, and the increase in compressor frequency should be between 9 Hz and 11 Hz. If T2-Ts≥5℃, the increase in fan speed will be between 140 and 160 rpm, and the increase in compressor frequency will be between 14 Hz and 16 Hz.

4. The control method according to claim 1, wherein The preset time is divided into multiple time periods; During the first time period, the air guiding angle of the air guiding device is controlled to be a first elevation angle; In a second time period following the first time period, the air guiding angle of the air guiding device is controlled to decrease from the first elevation angle to the second elevation angle; In the third time period following the second time period, the air guiding device is controlled to swing back and forth between the first elevation angle and the second elevation angle.

5. The control method according to claim 4, wherein The first elevation angle is the maximum elevation angle of the air guide device.

6. The control method according to claim 4, wherein During the alternating execution of cooling and air supply in the whole-house mode, the air guide device is controlled to swing back and forth between the first elevation angle and the third elevation angle, wherein the third elevation angle is smaller than the second elevation angle, and the left and right swing device of the air conditioner is controlled to swing back and forth left and right.

7. The control method according to claim 4, wherein the step of continuing the cooling operation in the whole-house mode when T1-T2 < A includes: The air guiding device is controlled to swing back and forth between the first elevation angle and the second elevation angle.

8. The control method according to claim 4, wherein Both the second time period and the third time period are shorter than the first time period.

9. The control method according to claim 1, wherein During the air supply operation, the compressor operates at the lowest possible frequency.

10. An air conditioner, comprising: The casing has an air outlet. An air guide plate is used to adjust the pitch angle of the airflow from the air outlet. and A controller includes a processor and a memory, the memory storing a computer program that, when executed by the processor, is used to implement the control method according to any one of claims 1 to 9.

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