CN114322238A

CN114322238A - Method and device for controlling air conditioner and multi-split air conditioner

Info

Publication number: CN114322238A
Application number: CN202111564865.7A
Authority: CN
Inventors: 王文博; 郝本华
Original assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-04-12
Anticipated expiration: 2041-12-20
Also published as: CN114322238B; WO2023115951A1

Abstract

The application relates to the technical field of intelligent air conditioners and discloses a method for controlling an air conditioner. The method for controlling an air conditioner includes: obtaining a first temperature difference value between a first indoor temperature of a first room and a set temperature at the current moment and a second temperature difference value between the set temperature and a second indoor temperature of a second room; determining a current temperature adjusting stage in the three temperature adjusting stages according to the first temperature difference and the second temperature difference; determining the current cooling rate of the first room and the current heating rate of the second room corresponding to the current temperature adjusting stage according to the corresponding relation between the temperature adjusting stage and the room temperature change rate; and controlling a first air conditioner of the first room according to the current temperature reduction rate, and controlling a second air conditioner of the second room according to the current temperature increase rate. The total energy consumption of the first air conditioner and the second air conditioner can be reduced by adopting the method for controlling the air conditioners. The application also discloses a device and multi-split air conditioner for controlling the air conditioner.

Description

Method and device for controlling air conditioner and multi-split air conditioner

Technical Field

The application relates to the technical field of intelligent air conditioners, in particular to a method and a device for controlling an air conditioner and a multi-split air conditioner.

Background

At present, air conditioners can be installed in different rooms of a family, the air conditioners can be multi-split air conditioners and split air conditioners, and each air conditioner can adjust the temperature of the room where the air conditioner is located. In the process of adjusting the temperature in the home, a set temperature may be set, a room having an indoor temperature higher than the set temperature is determined as a cooling room, and if an air conditioner in the cooling room is in a heating mode, an operation mode of the air conditioner in the cooling room is switched to a cooling mode, so that the temperatures of a plurality of rooms in the home may be all adjusted to a target temperature.

For the air conditioner of each room, a controller with a function of eliminating deviation is adopted for control, namely, a temperature difference value between the indoor temperature and the set temperature is firstly determined, then the cooling power or the heating power of the air conditioner is determined according to the temperature difference value, and the larger the temperature difference value is, the larger the cooling power or the heating power is.

In the process of implementing the embodiment of the present application, it is found that at least the following problems exist in the related art:

for a first room and a second room with heat exchange, the first room is in a cooling state, the second room is in a heating state, if the temperature difference value is larger, the refrigerating power of a first air conditioner in the first room is larger, the heating power of a second air conditioner in the second room is larger, the heat flow of the two rooms is easy to be smaller, and the energy consumption of the air conditioners is improved.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

The embodiment of the application provides a method and a device for controlling an air conditioner and an intelligent air conditioner, and energy consumption is reduced in the process of cooling a first room and heating a second room which has heat exchange with the first room.

In some embodiments, a method for controlling an air conditioner includes: for a first room and a second room with heat exchange, under the condition of cooling the first room and heating the second room, obtaining a first temperature difference value between a first indoor temperature of the first room and a set temperature at the current moment and a second temperature difference value between the set temperature and a second indoor temperature of the second room; determining a current temperature adjusting stage in the three temperature adjusting stages according to the first temperature difference and the second temperature difference; the three temperature adjusting stages are a first temperature adjusting stage, a second temperature adjusting stage and a third temperature adjusting stage in sequence according to the temperature difference from large to small; determining the current cooling rate of the first room and the current heating rate of the second room corresponding to the current temperature adjusting stage according to the corresponding relation between the temperature adjusting stage and the room temperature change rate; the room temperature change rate corresponding to the second temperature adjusting stage is greater than the room temperature change rate corresponding to the first temperature adjusting stage, and the room temperature change rate corresponding to the second temperature adjusting stage is greater than the room temperature change rate corresponding to the third temperature adjusting stage; and controlling a first air conditioner of the first room according to the current cooling rate, and controlling a second air conditioner of the second room according to the current heating rate.

Optionally, determining a current temperature adjusting stage in three temperature adjusting stages according to the first temperature difference and the second temperature difference, including: determining the first temperature adjusting stage as the current temperature adjusting stage under the condition that the first temperature difference value is larger than a first temperature threshold value and the second temperature difference value is larger than a third temperature threshold value; determining the second temperature adjusting stage as the current temperature adjusting stage when the first temperature difference is smaller than or equal to a first temperature threshold value and larger than a second temperature threshold value, the second temperature difference is smaller than or equal to a third temperature threshold value and larger than a fourth temperature threshold value; and determining the third temperature adjusting stage as the current temperature adjusting stage under the condition that the first temperature difference is smaller than or equal to a second temperature threshold and the second temperature difference is smaller than or equal to a fourth temperature threshold.

Optionally, the determining of the three tempering phases comprises: when the method is executed for the first time, obtaining a third temperature difference value between a third indoor temperature of the first room and the set temperature and a fourth temperature difference value between the set temperature and a fourth indoor temperature of the second room; obtaining a first product of a third temperature difference value and a set ratio and a second product of a fourth temperature difference value and the set ratio; determining a first temperature threshold value and a third temperature threshold value according to the magnitude relation of the first product and the second product; dividing the cooling process of the first room into three temperature adjusting stages according to the first temperature threshold and the second temperature threshold; dividing the temperature rise process of the second room into three temperature regulation stages according to the third temperature threshold and the fourth temperature threshold; wherein the second temperature threshold and the fourth temperature threshold are known values.

Optionally, determining the first temperature threshold and the third temperature threshold according to a magnitude relation between the first product and the second product includes: determining the first product as the first temperature threshold if the first product is less than the second product; obtaining a first threshold difference between the first temperature threshold and the second temperature threshold; obtaining a second threshold difference value corresponding to the first threshold difference value; determining the sum of the fourth temperature threshold and the second threshold difference as the third temperature threshold.

Optionally, determining the first temperature threshold and the third temperature threshold according to a magnitude relation between the first product and the second product includes: determining the second product as the third temperature threshold if the first product is greater than or equal to the second product; obtaining a second threshold difference value of the third temperature threshold and the fourth temperature threshold; obtaining a first threshold difference value corresponding to the second threshold difference value; determining the sum of the second temperature threshold and the first threshold difference as the first temperature threshold.

Optionally, the correspondence between the first threshold difference value and the second threshold difference value includes: controlling the first air conditioner to operate for a first set time according to set refrigerating power, and determining the falling temperature of the first room as the first threshold difference; and controlling the second air conditioner to operate for a first set time according to the set heating power, and determining the rising temperature of the second room as the second temperature threshold.

Optionally, the determining of the corresponding relationship between the temperature adjusting stage and the room temperature change rate includes: obtaining a temperature reduction value from the third temperature difference value to the first temperature threshold value; determining a first cooling rate of the first room corresponding to the first temperature adjusting stage according to the quotient of the temperature reduction value and a second set time length; obtaining a temperature increase value from the fourth temperature difference to the third temperature threshold; and determining a first temperature rise rate of the second room corresponding to the first temperature regulation stage according to the quotient of the temperature rise value and a second set time length.

In some embodiments, an apparatus for controlling an air conditioner includes an obtaining module, a first determining module, a second determining module, and a control module; the obtaining module is configured to obtain a first temperature difference value between a first indoor temperature of the first room and a set temperature at the current moment and a second temperature difference value between the set temperature and a second indoor temperature of the second room under the condition of cooling the first room and heating the second room for the first room and the second room with heat exchange; the first determination module is configured to determine a current temperature adjustment stage among three temperature adjustment stages according to the first temperature difference value and the second temperature difference value; the three temperature adjusting stages are a first temperature adjusting stage, a second temperature adjusting stage and a third temperature adjusting stage in sequence according to the temperature difference from large to small; the second determining module is configured to determine a current cooling rate of the first room and a current heating rate of the second room corresponding to the current temperature adjusting stage according to a corresponding relationship between the temperature adjusting stage and the room temperature change rate; the room temperature change rate corresponding to the second temperature adjusting stage is greater than the room temperature change rate corresponding to the first temperature adjusting stage, and the room temperature change rate corresponding to the second temperature adjusting stage is greater than the room temperature change rate corresponding to the third temperature adjusting stage; the control module is configured to control a first air conditioner of the first room according to the current cool-down rate and a second air conditioner of the second room according to the current warm-up rate.

In some embodiments, an apparatus for controlling an air conditioner includes a processor configured to perform the method for controlling an air conditioner provided in the foregoing embodiments when executing program instructions and a memory storing the program instructions.

In some embodiments, the multi-split air conditioner includes the device for controlling an air conditioner provided in the foregoing embodiments.

The method and the device for controlling the air conditioner and the multi-split air conditioner provided by the embodiment of the application can realize the following technical effects:

dividing a temperature reduction process of a first room by a first air conditioner and a temperature rise process of a second room by a second air conditioner into three temperature regulation stages, wherein the temperature difference value (the first temperature difference value and the second temperature difference value) corresponding to the first temperature regulation stage is the largest, the temperature difference value corresponding to the third temperature regulation stage is the smallest, for the first room, the three temperature regulation stages are three temperature reduction stages, and for the second room, the three temperature regulation stages are three temperature reduction stages; the room temperature change rate in the first temperature regulation stage is smaller than the room temperature change rate corresponding to the second temperature regulation stage, namely the temperature reduction rate of the first room in the first temperature regulation stage is smaller than the temperature reduction rate of the first room in the second temperature regulation stage, and the temperature rise rate of the second room in the first temperature regulation stage is smaller than the temperature rise rate of the second room in the second temperature regulation stage, so that a higher temperature difference can be maintained between the first room and the second room in the first stage, heat of the first room can freely flow to the second room, the heat flow is beneficial to simultaneously reducing the temperature of the first room and improving the temperature of the second room, and the total energy consumption of the first air conditioner and the second air conditioner is reduced; the room temperature change rate of the third temperature regulation stage is smaller than that of the second temperature regulation stage, so that the first room and the second room can reach the set temperature more stably; in the process of simultaneously cooling the first room and heating the second room, the heat flow of the two rooms is effectively utilized, and the total energy consumption of the first air conditioner and the second air conditioner is reduced.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated in drawings corresponding to, and not limiting to, embodiments in which elements having the same reference number designation are identified as similar elements, and in which:

fig. 1 is a schematic diagram of an implementation scenario of a method for controlling an air conditioner according to an embodiment of the present application;

fig. 2 is a schematic diagram of a method for controlling an air conditioner according to an embodiment of the present disclosure;

fig. 3 is a schematic diagram of changes of a first indoor temperature and a second indoor temperature and a temperature difference therebetween provided by an embodiment of the present application;

FIG. 4 is a schematic diagram of a process for determining three tempering stages provided by an embodiment of the present application;

fig. 5 is a schematic diagram of an apparatus for controlling an air conditioner according to an embodiment of the present disclosure;

fig. 6 is a schematic diagram of an apparatus for controlling an air conditioner according to an embodiment of the present disclosure.

Detailed Description

So that the manner in which the features and elements of the present embodiments can be understood in detail, a more particular description of the embodiments, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

The terms "first," "second," and the like in the description and in the claims of the embodiments of the application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present application are described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

The term "plurality" means two or more unless otherwise specified.

In the embodiment of the present application, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.

Fig. 1 is a schematic diagram of an implementation scenario of a method for controlling an air conditioner according to an embodiment of the present application. The implementation scenario includes a first room R1 and a second room R2, a first air conditioner K1 is installed in the first room R1, the first air conditioner K1 can adjust a first indoor temperature T1 in the first room R1, a second air conditioner K2 is installed in the second room R2, a second air conditioner K2 can adjust a second indoor temperature T2 in the second room R2, and the first room R1 and the second room R2 can exchange heat through a passage P, which may be an open door, an open window, or an open door and window. In the case where the first indoor temperature T1 is higher than the second indoor temperature T2, heat flows from the first room R1 to the second room R2 through the passage P, causing the first indoor temperature T1 to have a decreasing tendency and the second indoor temperature T2 to have an increasing tendency; in the case where the first indoor temperature T1 is lower than the second indoor temperature T2, heat flows from the second room R2 to the first room R1 through the passage P, causing the first indoor temperature T1 to have a decreasing tendency and the second indoor temperature T2 to have an increasing tendency.

Whether the passageway P is opened or not may be detected by a door and/or window opening state detecting means, for example, a door and/or window closing position sensor may be installed on the door and/or window, and the opening state of the door and/or window may be determined using a detection signal of the door and/or window closing position sensor to determine whether heat exchange exists between the first room R1 and the second room R2.

The method for controlling an air conditioner provided in the embodiment of the present application is suitably applied to a scenario where a temperature difference between a first indoor temperature T1 of a first room R1 and a second indoor temperature T2 of a second room R2 is large. For example, before the first room R1 and the second room R2 are switched from the state in which there is no heat exchange to the state in which there is heat exchange, the respective required set temperatures of the first room R1 (e.g., the room in which an infant is present) and the second room R2 (e.g., the room in which young children are present) are different, and the first indoor temperature T1 and the second indoor temperature T2 of the first room R1 and the second room T2 reach the respective set temperatures; in this way, after the first room R1 and the second room R2 are switched from the state in which there is no heat exchange to the state in which there is heat exchange, the temperature difference between the first indoor temperature T1 of the first room R1 and the second indoor temperature T2 of the second room R2 is large; after the heat exchange between the first room R1 and the second room R2, the set temperature common to the first room R1 and the second room R2 needs to be balanced between the optimal temperatures of the respective members, and in this case, the first room R1 needs to be cooled down and the second room R2 needs to be heated up.

If both the first air conditioner K1 and the second air conditioner K2 are shut down after the heat exchange is present in the first room R1 and the second room R2, the temperatures of the two rooms are balanced in the case of natural heat exchange, which obviously results in a long time consumption; if the first air conditioner K1 and the second air conditioner K2 are both made to perform cooling and heating according to a conventional control method, for example, a proportional-Integral-derivative (PID) method is used, when the temperature difference between the first room R1 and the second room R2 is large, the first air conditioner K1 and the second air conditioner K2 are both rapidly decreased, which corresponds to rapid temperature decrease or temperature increase when the heat flow between the first room R1 and the second room R2 is maximum, and the influence of the heat flow between the first room R1 and the second room R2 on the temperature decrease of the first indoor temperature T1 and on the temperature increase of the second indoor temperature T2 is reduced to the maximum extent, so that the energy consumption is high.

In the method for controlling an air conditioner provided in the embodiment of the present application, the room temperature change rate corresponding to the third temperature adjustment stage (the temperature decrease rate of the first room R1 and the temperature increase rate of the second room R2) is less than the room temperature change rate corresponding to the second temperature adjustment stage, which is favorable for the first room R1, the first room temperature T1, and the second room temperature T2 of the second room R2 to reach the set temperature (the set temperature shared by the first room R1 and the second room R2) relatively stably, the temperature change rate corresponding to the second temperature adjustment stage is maximum, and is favorable for shortening the time length required for the first room temperature T1 and the second room temperature T2 to reach the set temperature; the room temperature change rate of the first temperature adjusting stage is smaller than that of the second temperature adjusting stage, so that a higher temperature difference value is favorably maintained between the first room R1 and the second room R2, the heat flow of the first room R1 and the second room R2 is fully utilized, and the energy consumption is reduced. By setting different temperature adjusting stages, the balance between the reduction of the total energy consumption of the air conditioner and the rapid temperature adjustment can be achieved.

Fig. 2 is a schematic diagram of a method for controlling an air conditioner according to an embodiment of the present application. The method for controlling the air conditioner may be performed by a controller of the air conditioner, or a control panel or a remote controller communicatively connected to the air conditioner, or a server of the smart home system. The embodiment of the present application exemplifies the method for controlling an air conditioner by controlling the first air conditioner and the second air conditioner shown in fig. 1.

Referring to fig. 2, a method for controlling an air conditioner includes:

s201, for a first room and a second room with heat exchange, under the condition that the first room is cooled and the second room is heated, obtaining a first temperature difference value between a first indoor temperature of the first room and a set temperature at the current moment and a second temperature difference value between the set temperature and a second indoor temperature of the second room.

In a home or office scenario, it is usually necessary to balance the temperatures of the rooms, i.e., adjust the indoor temperatures of the rooms to the same set temperature, so as to meet the comfort requirements of the users.

The case where neither the first indoor temperature of the first room nor the second indoor temperature of the second room has reached the set temperature may include: the first indoor temperature and the second indoor temperature are both greater than the set temperature, and the first room and the second room need to be cooled simultaneously; or, both the first indoor temperature and the second indoor temperature are lower than the set temperature, and at this time, the first room and the second room need to be subjected to simultaneous heating treatment; or, in the first indoor temperature and the second indoor temperature, one indoor temperature is greater than the set temperature, and the other indoor temperature is less than the set temperature, and at this time, it is necessary to perform a temperature raising process on one room and a temperature lowering process on the other room.

The method for controlling the air conditioner is suitable for the situation that the first indoor temperature is higher than the set temperature, the second indoor temperature is lower than the set temperature, the first room needs to be cooled, and the second room needs to be heated.

In the embodiment of the present application, for convenience of description, the first temperature difference and the second temperature difference are made to exist in a positive form, for example, the first indoor temperature may be subtracted from the set temperature to obtain the first temperature difference, and the second indoor temperature may be subtracted from the set temperature to obtain the second temperature difference.

Of course, the first temperature difference and the second temperature difference are positive values, and for convenience of illustration only, in practical applications, the first room temperature is usually subtracted from the set temperature to obtain the first temperature difference, the second room temperature is usually subtracted from the set temperature to obtain the second temperature difference, and then, when calculating by using the first room temperature and the second room temperature, the signs of the first room temperature and the second room temperature are considered.

S202, determining the current temperature adjusting stage in the three temperature adjusting stages according to the first temperature difference value and the second temperature difference value.

Before the step is executed, three temperature adjusting stages are set, wherein the three temperature adjusting stages are a first temperature adjusting stage, a second temperature adjusting stage and a third temperature adjusting stage in sequence according to the temperature difference from large to small.

The three temperature adjusting stages include three temperature lowering stages corresponding to the first room and three temperature raising stages corresponding to the second room. And the three cooling stages corresponding to the first room are not completely the same as the three heating stages corresponding to the second room so as to adapt to the working conditions of the first room and the second room. The first temperature adjusting stage corresponds to a first temperature reducing stage of the first room and a first temperature increasing stage of the second room, the second temperature adjusting stage corresponds to a second temperature reducing stage of the first room and a second temperature increasing stage of the second room, and the third temperature adjusting stage corresponds to a third temperature reducing stage of the first room and a third temperature increasing stage of the second room.

Specifically, an interval greater than a first temperature threshold may be determined as a first cooling stage corresponding to the first room, an interval less than or equal to the first temperature threshold and greater than a second temperature threshold may be determined as a second cooling stage of the first room, and an interval less than or equal to the second temperature threshold may be determined as a third cooling stage of the first room; and determining the section larger than the third temperature threshold as a first temperature rise stage corresponding to the second room, determining the section smaller than or equal to the third temperature threshold and larger than the fourth temperature threshold as a second temperature rise stage of the second room, and determining the section smaller than the fourth temperature threshold as a third temperature rise stage of the second room. The first temperature threshold, the second temperature threshold, the third temperature threshold and the fourth temperature threshold can be set before the air conditioner leaves a factory; and the air conditioner can be manually debugged by professional personnel after leaving factory.

Thus, determining the current temperature adjustment stage among the three temperature adjustment stages according to the first temperature difference value and the second temperature difference value may include: determining the first temperature adjusting stage as the current temperature adjusting stage under the condition that the first temperature difference value is larger than the first temperature threshold value and the second temperature difference value is larger than the third temperature threshold value; determining the second temperature adjusting stage as the current temperature adjusting stage under the condition that the first temperature difference value is smaller than or equal to a first temperature threshold value and larger than a second temperature threshold value, the second temperature difference value is smaller than or equal to a third temperature threshold value and larger than a fourth temperature threshold value; and determining the third temperature regulation stage as the current temperature regulation stage under the condition that the first temperature difference is smaller than or equal to the second temperature threshold and the second temperature difference is smaller than or equal to the fourth temperature threshold.

Of course, when the current temperature adjusting stage is the first temperature adjusting stage, for the second room, the case is the first temperature decreasing stage, and for the second room, the case is the first temperature increasing stage; when the temperature adjusting stage is the second temperature adjusting stage or the third temperature adjusting stage, the specific meanings of the current temperature adjusting stage for the first room and the second room are similar, and are not repeated here.

After the first temperature regulation stage is determined as the current temperature regulation stage, the first temperature difference value of the first room is continuously reduced, the second temperature difference value of the second room is continuously reduced, the situation that the first temperature difference value is not larger than the first temperature threshold value and the second temperature difference value is larger than the third temperature threshold value will occur, or the situation that the first temperature difference value is larger than the first temperature threshold value and the second temperature difference value is not larger than the third temperature threshold value will occur, at this time, the first temperature regulation stage is still determined as the current temperature regulation stage until the first temperature difference value is larger than the second temperature threshold value and smaller than or equal to the first temperature threshold value and the second temperature difference value is larger than the fourth temperature threshold value and smaller than or equal to the third temperature threshold value, and then the second temperature regulation stage is determined as the current temperature regulation stage.

After the second temperature regulation stage is determined as the current temperature regulation stage, the first temperature difference value of the first room is continuously reduced, the second temperature difference value of the second room is continuously reduced, the situation that the first temperature difference value is smaller than or equal to the second temperature threshold value and the second temperature difference value is larger than the fourth temperature threshold value will occur, or the situation that the first temperature difference value is larger than the second temperature threshold value and the second temperature difference value is smaller than or equal to the fourth temperature threshold value will occur, at this time, the second temperature regulation stage is still determined as the current temperature regulation stage until the first temperature difference value is smaller than or equal to the second temperature threshold value and the second temperature difference value is smaller than or equal to the fourth temperature threshold value, and then the third temperature regulation stage is determined as the current temperature regulation stage.

The current temperature adjusting stage can be determined by the technical scheme.

S203, determining the current temperature reduction rate of the first room and the current temperature increase rate of the second room corresponding to the current temperature adjusting stage according to the corresponding relation between the temperature adjusting stage and the room temperature change rate.

The corresponding relation between the temperature adjusting stage and the room temperature change rate is also set before the method is executed. And for the first room, the corresponding relation between the temperature adjusting stage and the room temperature change rate refers to the corresponding relation between the temperature reducing stage and the room temperature reduction rate; for the second room, the correspondence between the temperature adjusting stage and the room temperature change rate refers to the correspondence between the temperature increasing stage and the room temperature increasing rate.

The room temperature change rate corresponding to the second temperature adjusting stage is greater than the room temperature change rate corresponding to the first temperature adjusting stage, and the room temperature change rate corresponding to the second temperature adjusting stage is greater than the room temperature change rate corresponding to the third temperature adjusting stage. In the first room, the room temperature reduction rate corresponding to the second cooling stage is greater than the room temperature reduction rate corresponding to the first cooling stage, and the room temperature reduction rate corresponding to the second cooling stage is greater than the room temperature reduction rate corresponding to the third cooling stage; in the second room, the room temperature rising rate corresponding to the second temperature rising stage is greater than the room temperature rising rate corresponding to the first temperature rising stage, and the room temperature rising rate corresponding to the second temperature rising stage is greater than the room temperature rising rate corresponding to the third temperature rising stage.

The corresponding relation between the temperature adjusting stage and the room temperature change rate can be the corresponding relation between the temperature adjusting stage and the fixed room temperature change rate, and can also be the corresponding relation between the temperature adjusting stage and the average room temperature change rate.

For example, the first temperature adjusting stage corresponds to a first temperature reduction rate of the first room and a second temperature increase rate of the second room, the second temperature adjusting stage corresponds to the second temperature reduction rate of the first room and the second temperature increase rate of the second room, and the first temperature reduction rate, the second temperature reduction rate, the first temperature increase rate and the second temperature increase rate can all be fixed room temperature change rates; the third temperature adjusting stage corresponds to a third temperature decreasing rate of the first room and a third temperature increasing rate of the second room, and the third temperature decreasing rate and the third temperature increasing rate may be average room temperature changing rates.

By the method, the current cooling rate of the first air conditioner and the current heating rate of the second air conditioner can be obtained.

And S204, controlling a first air conditioner in the first room according to the current cooling rate, and controlling a second air conditioner in the second room according to the current heating rate.

The cooling rate of the first room and the cooling power of the first air conditioner have a corresponding relationship, and the heating rate of the second room and the heating power of the second air conditioner have a corresponding relationship. After the current cooling rate is obtained, the current refrigeration power corresponding to the current cooling rate can be obtained, and the first air conditioner is controlled according to the refrigeration power, for example, the larger the running frequency of a compressor of the first air conditioner is, the larger the refrigeration power of the first air conditioner is, the higher the rotating speed of an indoor fan of the first air conditioner is, and the larger the refrigeration power of the first air conditioner is; after the current heating rate is obtained, the current heating power corresponding to the current heating rate can be obtained, and the second air conditioner is controlled according to the heating power, for example, the larger the operating frequency of a compressor of the second air conditioner is, the larger the heating power of the second air conditioner is, the higher the rotating speed of an indoor fan of the second air conditioner is, and the larger the heating power of the second air conditioner is.

Under the condition that the current temperature regulation stage is the third temperature regulation stage, the first air conditioner and the second air conditioner can be controlled according to a control method (such as a PID control method) in the prior art, at the moment, the first temperature difference value and the second temperature difference value are smaller, the difference value between the first indoor temperature and the second indoor temperature is smaller, the influence of heat flow of the two rooms on the temperatures of the two rooms is smaller, too large overshoot cannot be caused by adopting the prior control method, and the first indoor temperature and the second indoor temperature are more easily stabilized at the set temperature.

Fig. 3 is a schematic diagram of changes of a first indoor temperature, a second indoor temperature and a temperature difference therebetween according to an embodiment of the present application.

In fig. 3, the horizontal axis is the time T axis, and the vertical axis is the temperature T axis; a curve T1 is a first indoor temperature change curve, a curve T11 is a change curve of the first indoor temperature in a first temperature adjusting stage, a curve T12 is a change curve of the first indoor temperature in a second temperature adjusting stage, and a curve T13 is a change curve corresponding to the first indoor temperature in a third temperature adjusting stage; a curve T2 is a schematic diagram of the second indoor temperature, a curve T21 is a variation curve of the second indoor temperature at the first temperature adjusting stage, a curve T22 is a variation curve of the second indoor temperature at the second temperature adjusting stage, and a curve T23 is a variation curve corresponding to the second indoor temperature at the third temperature adjusting stage; t0 is set temperature; the curve Δ T is a change curve of a temperature difference between the first indoor temperature T1 and the second indoor temperature T2, the curve Δ T1 is a change curve of a temperature difference between the first indoor temperature T11 and the second indoor temperature T21 in the first temperature adjustment stage, the curve Δ T2 is a change curve of a temperature difference between the first indoor temperature T12 and the second indoor temperature T22 in the second temperature adjustment stage, and the curve Δ T3 is a change curve of a temperature difference between the first indoor temperature T13 and the second indoor temperature T23 in the third temperature adjustment stage. Thus, the curve Δ T versus time integral in the graph corresponds to the total amount of heat flow in the first room and the second room. As can be seen in fig. 3, the integral of the curve Δ T1 over time (the area enclosed by the curve Δ T1 and the time T axis) is large, which is advantageous in making full use of the flow between the first room and the second room to reduce the total energy consumption of the first air conditioner and the second air conditioner during the cooling of the first room and the heating of the second room.

In the foregoing embodiment, the first temperature threshold, the second temperature threshold, the third temperature threshold and the fourth temperature threshold are explained, and the first temperature threshold and the third temperature threshold may also be determined in the manner as shown in fig. 4.

Referring to fig. 4, the determination process of the three temperature adjustment stages may include:

s401, when the method is executed for the first time, a third temperature difference value between a third indoor temperature of the first room and the set temperature and a fourth temperature difference value between the set temperature and a fourth indoor temperature of the second room are obtained.

After the first room and the second room are switched from the heat exchange absence state to the heat exchange presence state, the method is executed for the first time; or, after the set temperature is changed, it is the case that the method is performed for the first time.

That is, when the method is executed for the first time, three temperature-adjusting stages (three temperature-adjusting stages including three temperature-decreasing stages of the first room and three temperature-increasing stages of the second room) are determined according to the third indoor temperature of the first room, the fourth set temperature of the second room, and the set temperature at that time.

After the three temperature adjusting stages are determined, S201, S202, S203 and S204 in the foregoing embodiment are performed again.

Similarly, for convenience of description, the third temperature difference and the fourth temperature difference are still positive values, the third temperature difference is obtained by subtracting the set temperature from the third indoor temperature, and the fourth temperature difference is obtained by subtracting the fourth indoor temperature from the set temperature. In practical applications, the third temperature difference and the fourth temperature difference may both have signs.

S402, obtaining a first product of the third temperature difference value and the set ratio and a second product of the fourth temperature difference value and the set ratio.

Here, the set ratio may be greater than or equal to 1/2, for example, the set ratio may be 1/2, 2/3, 3/4, or 4/5.

If the set ratio is too large, the time required for the first indoor temperature and the second indoor temperature to reach the set temperature is too long; if the set ratio is too small, it causes an increase in the power consumption of the first air conditioner and the second air conditioner. Those skilled in the art can determine the set ratio according to the actual requirement, and the detailed description is omitted here.

And S403, determining a first temperature threshold and a third temperature threshold according to the magnitude relation of the first product and the second product.

If the first product is less than the second product, the first product may be determined to be a first temperature threshold; if the first product is greater than or equal to the second product, the second product may be determined to be the third temperature threshold.

Specifically, determining the first temperature threshold and the third temperature threshold according to the magnitude relation of the first product and the second product comprises: determining the first product as a first temperature threshold if the first product is less than the second product; obtaining a first threshold difference between a first temperature threshold and a second temperature threshold; obtaining a second threshold difference value corresponding to the first threshold difference value; and determining the sum of the fourth temperature threshold and the difference value of the second threshold as the third temperature threshold.

Alternatively, determining the first temperature threshold and the third temperature threshold according to a magnitude relation of the first product and the second product may include: determining the second product as a third temperature threshold if the first product is greater than or equal to the second product; obtaining a second threshold difference value of the third temperature threshold and the fourth temperature threshold; obtaining a first threshold difference value corresponding to the second threshold difference value; and determining the sum of the second temperature threshold and the difference value of the first threshold as the first temperature threshold.

The second temperature threshold and the fourth temperature threshold are both known values. The second temperature threshold is related to the stability of the first air conditioner in adjusting the temperature of the first room, and the stronger the stability of the first air conditioner is, the smaller the second temperature threshold can be, the weaker the stability of the first air conditioner is, and the larger the second temperature threshold needs to be; the fourth temperature threshold is related to the stability of the second air conditioner in adjusting the temperature of the second room, and the stronger the stability of the second air conditioner is, the smaller the fourth temperature threshold may be, the weaker the stability of the second air conditioner is, and the larger the fourth temperature threshold needs to be.

The first air conditioner has a temperature control function, and the first air conditioner has a temperature control function of controlling the temperature of the first room, wherein the first air conditioner has a temperature control function of controlling the temperature of the first room, and the first air conditioner has a temperature control function of controlling the temperature of the first room.

The stability of the second air conditioner when adjusting the temperature of the second room can be achieved by the second indoor temperature for the first time, and the required time period for stabilizing the difference between the second indoor temperature and the set temperature in the dead zone range is prolonged, the longer the time period is, the weaker the stability of the second air conditioner is, and the shorter the time period is, the stronger the stability of the second air conditioner is.

The correspondence between the first threshold difference and the second threshold difference may include: under the condition that no heat exchange exists between the first room and the second room, controlling the first air conditioner to operate for a first set time length according to set refrigerating power, and determining the falling temperature of the first room as a first threshold difference value; and controlling the second air conditioner to operate for a first set time according to the set heating power, and determining the rising temperature of the second room as a second temperature threshold.

The longer the duration of the first set duration is, the longer the duration of the rapid cooling of the first room is, the shorter the duration of the first room from the initial temperature to the set temperature is, and likewise, the shorter the duration of the second room from the initial temperature to the set temperature is; the shorter the first set time is, the shorter the time for rapidly cooling the first room is, the longer the time required for the first room to reach the set temperature from the initial temperature is, and likewise, the longer the time required for the second room to reach the set temperature from the initial temperature is. The skilled person can adaptively adjust the first set time period according to the expected time period from the initial temperature to the set temperature of the first room and the expected time period from the initial temperature to the set temperature of the second room, which is not limited in particular.

The set cooling power may be a rated cooling power of the first air conditioner, and the set heating power may be a rated heating power of the second air conditioner; or the ratio of the set refrigerating power to the rated refrigerating power of the first air conditioner is the same as the ratio of the set heating power to the rated heating power of the second air conditioner. The ratio may be 5/6, 4/5, 3/4, etc.

In the above manner, the first temperature threshold and the third temperature threshold may be determined.

S404, dividing the temperature reduction process of the first room into three temperature adjustment stages according to the first temperature threshold and the second temperature threshold.

S405, dividing the temperature rising process of the second room into three temperature adjusting stages according to the third temperature threshold and the fourth temperature threshold.

S405 does not succeed S404.

The first temperature threshold determined according to the scheme is more consistent with the refrigeration working condition of the first room, and the third temperature threshold determined according to the scheme is more consistent with the heating working condition of the second room, so that three temperature adjusting stages which are consistent with the working condition of the first room and the working condition of the second room are divided.

The process is divided into three temperature adjusting stages, and according to a dividing rule, the time when the temperature of the first room reaches a first temperature threshold value is the same as the time when the temperature of the second room reaches a third temperature threshold value; the time at which the temperature of the first room reaches the second temperature threshold and the time at which the temperature of the second room reaches the fourth temperature threshold are the same. In a specific application, the tempering phase is still determined as described above on the basis of the first temperature difference and the second temperature difference.

The rate of change of the room temperature for the three tempering phases is explained in detail below:

in the third temperature adjusting stage, the first air conditioner and the second air conditioner can both adopt the existing control method with the function of eliminating deviation, and the room temperature falling rate (third temperature reducing rate) of the first room and the room temperature rising rate (third temperature rising rate) of the second room can both be controlled by the corresponding control methods.

In the second temperature adjusting stage, the room temperature reduction rate (second temperature reduction rate) of the first room corresponds to the set refrigerating power of the first air conditioner; the room temperature rising rate (second temperature rising rate) of the second room corresponds to the set heating power of the second air conditioner. The set cooling power may be 5/6, 4/5 or 3/4 of the rated cooling power of the first air conditioner, and the set heating power may be 5/6, 4/5 or 3/4 of the rated heating power of the second air conditioner; the ratio of the set cooling power to the rated cooling power of the first air conditioner may be equal to the ratio of the set heating power to the rated heating power of the second air conditioner.

In the first temperature adjusting stage, the corresponding relation between the temperature adjusting stage and the room temperature change rate can be determined by the following method: obtaining a temperature reduction value from the third temperature difference value to the first temperature threshold value; determining a first cooling rate of the first room corresponding to the first temperature adjusting stage according to the quotient of the temperature reduction value and the second set time length; obtaining a temperature rise value from the fourth temperature difference to a third temperature threshold; and determining a first temperature rise rate of the second room corresponding to the first temperature adjusting stage according to the quotient of the temperature rise value and the second set time length. The second set period of time is typically greater than the first set period of time, and may be 2 times, 2.5 times, 3 times or more the first set period of time.

According to the method, the corresponding relation between the temperature adjusting stage and the room temperature change rate can be obtained, then the current temperature adjusting stage can be determined according to the first temperature difference value and the second temperature difference value, and the first air conditioner and the second air conditioner are controlled according to the current temperature adjusting stage.

Fig. 5 is a schematic diagram of an apparatus for controlling an air conditioner according to an embodiment of the present disclosure. The device for controlling the air conditioner can be realized in the form of software, hardware or a combination of software and hardware.

As shown in connection with fig. 5, the apparatus for controlling an air conditioner includes an obtaining module 51, a first determining module 52, a second determining module 53, and a control module 54;

the obtaining module 51 is configured to obtain, for a first room and a second room where heat exchange exists, a first temperature difference between a first indoor temperature of the first room and a set temperature at a current time and a second temperature difference between the set temperature and a second indoor temperature of the second room in a case where the first room is cooled and the second room is heated;

the first determination module 52 is configured to determine a current tempering phase among the three tempering phases based on the first temperature difference value and the second temperature difference value; the three temperature adjusting stages are a first temperature adjusting stage, a second temperature adjusting stage and a third temperature adjusting stage in sequence according to the temperature difference from large to small;

the second determining module 53 is configured to determine a current cooling rate of the first room and a current heating rate of the second room corresponding to the current temperature adjusting stage according to the corresponding relationship between the temperature adjusting stage and the room temperature change rate; the room temperature change rate corresponding to the second temperature regulation stage is greater than the room temperature change rate corresponding to the first temperature regulation stage, and the room temperature change rate corresponding to the second temperature regulation stage is greater than the room temperature change rate corresponding to the third temperature regulation stage;

the control module 54 is configured to control a first air conditioner of a first room according to a current cool down rate and a second air conditioner of a second room according to a current warm up rate.

Optionally, the first determining module 52 includes a first determining unit, a second determining unit and a third determining unit, the first determining unit is configured to determine the first temperature adjusting stage as the current temperature adjusting stage if the first temperature difference is greater than the first temperature threshold and the second temperature difference is greater than the third temperature threshold; the second determination unit is configured to determine the second temperature regulation stage as the current temperature regulation stage if the first temperature difference is less than or equal to a first temperature threshold value and greater than a second temperature threshold value, and the second temperature difference is less than or equal to a third temperature threshold value and greater than a fourth temperature threshold value; the third determination unit is configured to determine the third tempering phase as the current tempering phase in case the first temperature difference is smaller than or equal to the second temperature threshold and the second temperature difference is smaller than or equal to the fourth temperature threshold.

Optionally, the determination of three tempering phases comprises: when the method is executed for the first time, obtaining a third temperature difference value between a third indoor temperature of the first room and the set temperature and a fourth temperature difference value between the set temperature and a fourth indoor temperature of the second room; obtaining a first product of the third temperature difference and the set ratio and a second product of the fourth temperature difference and the set ratio; determining a first temperature threshold value and a third temperature threshold value according to the magnitude relation of the first product and the second product; dividing the cooling process of the first room into three temperature adjusting stages according to the first temperature threshold and the second temperature threshold; dividing the temperature rise process of the second room into three temperature regulation stages according to the third temperature threshold and the fourth temperature threshold; the second temperature threshold and the fourth temperature threshold are known values.

Optionally, determining the first temperature threshold and the third temperature threshold according to a magnitude relation of the first product and the second product includes: determining the first product as a first temperature threshold if the first product is less than the second product; obtaining a first threshold difference between a first temperature threshold and a second temperature threshold; obtaining a second threshold difference value corresponding to the first threshold difference value; and determining the sum of the fourth temperature threshold and the difference value of the second threshold as the third temperature threshold.

Optionally, determining the first temperature threshold and the third temperature threshold according to a magnitude relation of the first product and the second product includes: determining the second product as a third temperature threshold if the first product is greater than or equal to the second product; obtaining a second threshold difference value of the third temperature threshold and the fourth temperature threshold; obtaining a first threshold difference value corresponding to the second threshold difference value; and determining the sum of the second temperature threshold and the difference value of the first threshold as the first temperature threshold.

Optionally, the correspondence between the first threshold difference and the second threshold difference includes: controlling a first air conditioner to operate for a first set time according to set refrigerating power, and determining the falling temperature of a first room as a first threshold difference value; and controlling the second air conditioner to operate for a first set time according to the set heating power, and determining the rising temperature of the second room as a second temperature threshold.

Optionally, the determining of the corresponding relationship between the temperature adjusting stage and the room temperature change rate includes: obtaining a temperature reduction value from the third temperature difference value to the first temperature threshold value; determining a first cooling rate of the first room corresponding to the first temperature adjusting stage according to the quotient of the temperature reduction value and the second set time length; obtaining a temperature rise value from the fourth temperature difference to a third temperature threshold; and determining a first temperature rise rate of the second room corresponding to the first temperature adjusting stage according to the quotient of the temperature rise value and the second set time length.

In some embodiments, an apparatus for controlling an air conditioner includes a processor and a memory storing program instructions, the processor being configured to, when executing the program instructions, perform the method for controlling an air conditioner provided by the foregoing embodiments.

Fig. 6 is a schematic diagram of an apparatus for controlling an air conditioner according to an embodiment of the present disclosure. As shown in fig. 6, the apparatus for controlling an air conditioner includes:

a processor (processor)61 and a memory (memory)62, and may further include a Communication Interface (Communication Interface)63 and a bus 64. The processor 61, the communication interface 63 and the memory 62 may communicate with each other through a bus 64. Communication interface 63 may be used for information transfer. The processor 61 may call logic instructions in the memory 62 to perform the method for controlling the air conditioner provided by the foregoing embodiment.

Furthermore, the logic instructions in the memory 62 may be implemented in software functional units and stored in a computer readable storage medium when sold or used as a stand-alone product.

The memory 62 is a computer-readable storage medium, and can be used for storing software programs, computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present application. The processor 61 executes the functional application and data processing by executing the software program, instructions and modules stored in the memory 62, that is, implements the method in the above-described method embodiment.

The memory 62 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. Further, the memory 62 may include high speed random access memory and may also include non-volatile memory.

The embodiment of the application provides a multi-split air conditioner, which comprises the device for controlling the air conditioner provided by the embodiment.

Embodiments of the present application provide a computer-readable storage medium storing computer-executable instructions configured to perform the method for controlling an air conditioner provided in the foregoing embodiments.

Embodiments of the present application provide a computer program product comprising a computer program stored on a computer-readable storage medium, the computer program comprising program instructions that, when executed by a computer, cause the computer to perform the method for controlling an air conditioner provided by the foregoing embodiments.

The computer-readable storage medium described above may be a transitory computer-readable storage medium or a non-transitory computer-readable storage medium.

The technical solution of the embodiments of the present application may be embodied in the form of a software product, where the computer software product is stored in a storage medium and includes one or more instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method in the embodiments of the present application. And the aforementioned storage medium may be a non-transitory storage medium comprising: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes, and may also be a transient storage medium.

The above description and drawings sufficiently illustrate embodiments of the application to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. Furthermore, the words used in the specification are words of description only and are not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, the terms "comprises" and/or "comprising," when used in this application, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method or device comprising the element. In this document, each embodiment may be described with emphasis on differences from other embodiments, and the same and similar parts between the respective embodiments may be referred to each other. For methods, products, etc. of the embodiment disclosures, reference may be made to the description of the method section for relevance if it corresponds to the method section of the embodiment disclosure.

Those of skill in the art would appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software may depend upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the embodiments of the present application. It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system, the apparatus and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, apparatuses, etc.) may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit may be merely a division of a logical function, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to implement the present embodiment. In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. Each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

Claims

1. A method for controlling an air conditioner, comprising:

for a first room and a second room with heat exchange, under the condition of cooling the first room and heating the second room, obtaining a first temperature difference value between a first indoor temperature of the first room and a set temperature at the current moment and a second temperature difference value between the set temperature and a second indoor temperature of the second room;

determining a current temperature adjusting stage in the three temperature adjusting stages according to the first temperature difference and the second temperature difference; the three temperature adjusting stages are a first temperature adjusting stage, a second temperature adjusting stage and a third temperature adjusting stage in sequence according to the temperature difference from large to small;

determining the current cooling rate of the first room and the current heating rate of the second room corresponding to the current temperature adjusting stage according to the corresponding relation between the temperature adjusting stage and the room temperature change rate; the room temperature change rate corresponding to the second temperature adjusting stage is greater than the room temperature change rate corresponding to the first temperature adjusting stage, and the room temperature change rate corresponding to the second temperature adjusting stage is greater than the room temperature change rate corresponding to the third temperature adjusting stage;

and controlling a first air conditioner of the first room according to the current cooling rate, and controlling a second air conditioner of the second room according to the current heating rate.

2. Method according to claim 1, characterized in that determining a current tempering phase among three tempering phases from said first temperature difference and said second temperature difference comprises:

determining the first temperature adjusting stage as the current temperature adjusting stage under the condition that the first temperature difference value is larger than a first temperature threshold value and the second temperature difference value is larger than a third temperature threshold value;

determining the second temperature adjusting stage as the current temperature adjusting stage when the first temperature difference is smaller than or equal to a first temperature threshold value and larger than a second temperature threshold value, the second temperature difference is smaller than or equal to a third temperature threshold value and larger than a fourth temperature threshold value;

and determining the third temperature adjusting stage as the current temperature adjusting stage under the condition that the first temperature difference is smaller than or equal to a second temperature threshold and the second temperature difference is smaller than or equal to a fourth temperature threshold.

3. Method according to claim 1 or 2, characterized in that the determination of the three tempering phases comprises:

when the method is executed for the first time, obtaining a third temperature difference value between a third indoor temperature of the first room and the set temperature and a fourth temperature difference value between the set temperature and a fourth indoor temperature of the second room;

obtaining a first product of a third temperature difference value and a set ratio and a second product of a fourth temperature difference value and the set ratio;

determining a first temperature threshold value and a third temperature threshold value according to the magnitude relation of the first product and the second product;

dividing the cooling process of the first room into three temperature adjusting stages according to the first temperature threshold and the second temperature threshold;

dividing the temperature rise process of the second room into three temperature regulation stages according to the third temperature threshold and the fourth temperature threshold;

wherein the second temperature threshold and the fourth temperature threshold are known values.

4. The method of claim 3, wherein determining the first temperature threshold and the third temperature threshold based on a magnitude relationship of the first product and the second product comprises:

determining the first product as the first temperature threshold if the first product is less than the second product;

obtaining a first threshold difference between the first temperature threshold and the second temperature threshold;

obtaining a second threshold difference value corresponding to the first threshold difference value;

determining the sum of the fourth temperature threshold and the second threshold difference as the third temperature threshold.

5. The method of claim 3, wherein determining the first temperature threshold and the third temperature threshold based on a magnitude relationship of the first product and the second product comprises:

determining the second product as the third temperature threshold if the first product is greater than or equal to the second product;

obtaining a second threshold difference value of the third temperature threshold and the fourth temperature threshold;

obtaining a first threshold difference value corresponding to the second threshold difference value;

determining the sum of the second temperature threshold and the first threshold difference as the first temperature threshold.

6. The method according to claim 4 or 5, wherein the correspondence between the first threshold difference value and the second threshold difference value comprises:

controlling the first air conditioner to operate for a first set time according to set refrigerating power, and determining the falling temperature of the first room as the first threshold difference;

and controlling the second air conditioner to operate for a first set time according to the set heating power, and determining the rising temperature of the second room as the second temperature threshold.

7. The method of claim 3, wherein the determining of the correspondence between the tempering phase and the rate of change of the room temperature comprises:

obtaining a temperature reduction value from the third temperature difference value to the first temperature threshold value;

determining a first cooling rate of the first room corresponding to the first temperature adjusting stage according to the quotient of the temperature reduction value and a second set time length;

obtaining a temperature increase value from the fourth temperature difference to the third temperature threshold;

and determining a first temperature rise rate of the second room corresponding to the first temperature regulation stage according to the quotient of the temperature rise value and a second set time length.

8. An apparatus for controlling an air conditioner, comprising:

the obtaining module is configured to obtain a first temperature difference value between a first indoor temperature of the first room and a set temperature at the current moment and a second temperature difference value between the set temperature and a second indoor temperature of the second room under the condition that the first room is cooled and the second room is heated for the first room and the second room with heat exchange;

a first determination module configured to determine a current temperature adjustment stage among three temperature adjustment stages according to the first temperature difference value and the second temperature difference value; the three temperature adjusting stages are a first temperature adjusting stage, a second temperature adjusting stage and a third temperature adjusting stage in sequence according to the temperature difference from large to small;

the second determination module is configured to determine the current temperature reduction rate of the first room and the current temperature rise rate of the second room corresponding to the current temperature adjusting stage according to the corresponding relation between the temperature adjusting stage and the room temperature change rate; the room temperature change rate corresponding to the second temperature adjusting stage is greater than the room temperature change rate corresponding to the first temperature adjusting stage, and the room temperature change rate corresponding to the second temperature adjusting stage is greater than the room temperature change rate corresponding to the third temperature adjusting stage;

a control module configured to control a first air conditioner of the first room according to the current cooling rate and a second air conditioner of the second room according to the current heating rate.

9. An apparatus for controlling an air conditioner comprising a processor and a memory storing program instructions, characterized in that the processor is configured to perform the method for controlling an air conditioner according to any one of claims 1 to 7 when executing the program instructions.

10. A multi-split air conditioner characterized by comprising the apparatus for controlling an air conditioner as claimed in claim 8 or 9.