Control method of air conditioner and air conditioner

Abstract

The invention provides a control method of an air conditioner and the air conditioner. The air conditioner comprises two indoor heat exchangers. The air conditioner has a first heating mode in which the two indoor heat exchangers conduct heating and a second heating mode in which one indoor heat exchanger conducts heating and the other indoor heat exchanger does not work. The method comprises the steps that when the air conditioner operates in a first heating mode, the outdoor environment temperature and the indoor heat exchanger temperature are obtained; and when the outdoor environment temperature is lower than the first temperature and the temperature of the indoor heat exchanger is lower than the second temperature, the second heating mode is operated. In the embodiment, when the outdoor environment temperature is lower than the first temperature and the temperature of the indoor heat exchangers is lower than the second temperature, it is considered that the heating capacity of the air conditioner is insufficient, and at the moment, one indoor heat exchanger is controlled to conduct heating while the other indoor heat exchanger does not work. Therefore, the temperature of the heating air passing through the indoor heat exchanger cannot be reduced, and discomfort of a user cannot be caused when the heating air is blown to the user.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and particularly to a control method for an air conditioner and an air conditioner. Background Art

[0002] In the prior art, the evaporator of the air conditioner and its size remain unchanged. When the outdoor environment is super-low temperature or the evaporator is severely frosted, the heat absorption capacity of the evaporator outdoors decreases sharply. With the indoor heat exchanger area unchanged, the air outlet temperature of the air conditioner decreases, and the blown air is relatively cool, even with a feeling of cold air, resulting in an uncomfortable user experience. Summary of the Invention

[0003] In view of the above problems, the present invention is proposed to provide a control method for an air conditioner and an air conditioner that can overcome or at least partially solve the above problems, ensuring that the hot air temperature blown by the air conditioner does not decrease even when the outdoor temperature is very low, and avoiding user discomfort.

[0004] Specifically, the present invention provides a control method for an air conditioner. The air conditioner includes two indoor heat exchangers; the air conditioner has a first heating mode in which both of the two indoor heat exchangers are in heating operation, and a second heating mode in which one indoor heat exchanger is in heating operation while the other indoor heat exchanger is not working; the method includes:

[0005] When the air conditioner operates in the first heating mode, obtaining the outdoor ambient temperature and the indoor heat exchanger temperature;

[0006] When the outdoor ambient temperature is lower than a first temperature and the indoor heat exchanger temperature is lower than a second temperature, operating the second heating mode.

[0007] Optionally, the control method of the air conditioner further includes:

[0008] When the outdoor ambient temperature is higher than the first temperature, operating the first heating mode; or

[0009] Obtaining the target temperature of the air conditioner; when the target temperature is reduced by a preset difference, operating the first heating mode.

[0010] Optionally, the control method of the air conditioner further includes:

[0011] Obtaining the target temperature of the air conditioner;

[0012] Determining the second temperature according to the target temperature;

[0013] Determining the second temperature according to the target temperature includes: determining the second temperature according to a relationship table between the target temperature and the second temperature; or, determining the second temperature according to a relational expression between the target temperature and the second temperature; the higher the target temperature, the higher the corresponding second temperature.

[0014] Optionally, obtaining the temperature of the indoor heat exchanger includes:

[0015] Obtaining the temperatures of two of the indoor heat exchangers;

[0016] Calculating a weighted average or geometric mean of the temperatures of two of the indoor heat exchangers to obtain the temperature of the indoor heat exchanger.

[0017] Optionally, the first temperature is -18°C to -12°C, and the second temperature is 30°C to 38°C.

[0018] Optionally, the control method of the air conditioner further includes:

[0019] Obtaining the temperature of the indoor heat exchanger that is operating in the second heating mode;

[0020] Controlling the rotational speed of the corresponding blower according to the temperature of the indoor heat exchanger; wherein

[0021] Controlling the rotational speed of the corresponding blower according to the temperature of the indoor heat exchanger includes:

[0022] Determining the rotational speed according to a relationship table between the temperature of the indoor heat exchanger and the rotational speed, or determining the rotational speed according to a relational expression between the temperature of the indoor heat exchanger and the rotational speed; the higher the temperature of the indoor heat exchanger, the higher the corresponding rotational speed.

[0023] Optionally, when the outdoor ambient temperature is lower than the first temperature and the temperature of the indoor heat exchanger is lower than the second temperature, operating the second heating mode includes:

[0024] Obtaining the user's location indoors;

[0025] Controlling the indoor heat exchanger near the user's location to continue heating, the blower corresponding to this indoor heat exchanger continues to rotate, and controlling the other indoor heat exchanger not to operate, and the blower corresponding to this indoor heat exchanger stops rotating.

[0026] Optionally, when the outdoor ambient temperature is lower than the first temperature and the temperature of the indoor heat exchanger is lower than the second temperature, operating the second heating mode further includes:

[0027] When the user's location changes, determining whether the indoor heat exchanger needs to be changed;

[0028] If so, obtain the rotational speed of the operating blower, denoted as the current rotational speed; cause the two indoor heat exchangers to perform heating simultaneously;

[0029] Gradually reduce the rotational speed of the operating blower until the blower stops rotating, and when the blower stops rotating, cause the corresponding indoor heat exchanger to stop working;

[0030] After the two indoor heat exchangers perform heating simultaneously for a preset time, turn on another blower and gradually increase the rotational speed of the blower to the current rotational speed.

[0031] Optionally, the air conditioner includes two vertically arranged air outlet parts and a control valve; each air outlet part has an air duct, and one indoor heat exchanger and a blower corresponding to the indoor heat exchanger are arranged in each air duct;

[0032] The two indoor heat exchangers are arranged in parallel, and the control valve controllably causes the two indoor heat exchangers to work simultaneously, or only causes one of the indoor heat exchangers to work.

[0033] According to another aspect of the present invention, there is also provided an air conditioner, which includes a memory, a processor, and a computer program stored on the memory, and the processor executes the computer program to implement the steps of the control method of any one of the above air conditioners.

[0034] In the control method of the air conditioner and the air conditioner of the present invention, in order to prevent the heating capacity of the air conditioner from being insufficient due to too low outdoor ambient temperature, the temperature of the indoor heat exchanger is relatively low, and then the situation where the blown hot air has a relatively low temperature occurs. While the air conditioner operates in the first heating mode in which both two indoor heat exchangers perform heating, the outdoor ambient temperature and the temperature of the indoor heat exchanger are also obtained. When the outdoor ambient temperature is lower than the first temperature and the temperature of the indoor heat exchanger is lower than the second temperature, it is considered that the heating capacity of the air conditioner is already insufficient. At this time, control one indoor heat exchanger to perform heating while the other indoor heat exchanger does not work, so that the total volume of the heating indoor heat exchanger is reduced, thereby achieving the effect of increasing the pressure and temperature of the heating indoor heat exchanger by reducing the total volume of the heating indoor heat exchanger during ultra-low temperature heating, increasing the air supply temperature, and improving the user experience. In this way, the heating capacity of the air conditioner can ensure the normal operation of one indoor heat exchanger in the heating state, and the temperature of the hot air passing through this indoor heat exchanger will not decrease, and it will not cause discomfort to the user when blowing towards the user.

[0035] Those skilled in the art will become more clearly aware of the above and other objects, advantages, and features of the present invention according to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings. Description of the Drawings

[0036] Some specific embodiments of the present invention will be described in detail hereinafter with reference to the accompanying drawings in an exemplary but not limiting manner. The same reference numerals in the drawings denote the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0037] Figure 1 is a schematic flowchart of a control method for an air conditioner according to an embodiment of the present invention;

[0038] Figure 2 is a schematic flowchart of a control method for an air conditioner according to an embodiment of the present invention;

[0039] Figure 3 is a schematic flowchart of a control method for an air conditioner according to an embodiment of the present invention;

[0040] Figure 4 is a schematic flowchart of a control method for an air conditioner according to an embodiment of the present invention;

[0041] Figure 5 is a schematic flowchart of a control method for an air conditioner according to an embodiment of the present invention;

[0042] Figure 6 is a working principle diagram of an air conditioner for heating in the prior art;

[0043] Figure 7 is a working principle diagram of an air conditioner for heating according to an embodiment of the present invention;

[0044] Figure 8 is a working principle diagram of an air conditioner for heating according to an embodiment of the present invention;

[0045] Figure 9 is a working principle diagram of an air conditioner for heating according to an embodiment of the present invention. Detailed Embodiment

[0046] This embodiment provides a solution for a control method of an air conditioner. The air conditioner includes two indoor heat exchangers, and the air conditioner has a first heating mode in which both indoor heat exchangers are heating, and a second heating mode in which one indoor heat exchanger is heating and the other indoor heat exchanger is not working. Figure 1 is a schematic flowchart of a control method for an air conditioner according to an embodiment of the present invention, and the method generally may include:

[0047] Step S100, when the air conditioner operates in the first heating mode, obtain the outdoor ambient temperature and the temperature of the indoor heat exchanger;

[0048] Step S200, when the outdoor ambient temperature is lower than the first temperature and the temperature of the indoor heat exchanger is lower than the second temperature, operate the second heating mode.

[0049] In this embodiment, in order to prevent the heating capacity of the air conditioner from being insufficient due to too low outdoor ambient temperature, the temperature of the indoor heat exchanger is relatively low, and then the situation where the blown hot air has a relatively low temperature occurs. While the air conditioner is operating in the first heating mode where both indoor heat exchangers are heating, the outdoor ambient temperature and the temperature of the indoor heat exchanger are also acquired. When the outdoor ambient temperature is lower than the first temperature and the temperature of the indoor heat exchanger is lower than the second temperature, it is considered that the heating capacity of the air conditioner is already insufficient. At this time, one indoor heat exchanger is controlled to heat while the other indoor heat exchanger does not work, so that the total volume of the heating indoor heat exchanger is reduced. Thus, when heating at ultra-low temperature, by reducing the total volume of the heating indoor heat exchanger, the pressure and temperature of the heating indoor heat exchanger are increased, the air supply temperature is increased, and the user experience is improved. In this way, the heating capacity of the air conditioner can ensure that one indoor heat exchanger in the heating state works normally, and the temperature of the hot air passing through this indoor heat exchanger will not decrease, and it will not cause discomfort to the user when blowing towards the user.

[0050] In some embodiments of the present invention, as Figure 2 shown, the control method of the air conditioner further includes:

[0051] Step S300, when the outdoor ambient temperature is higher than the first temperature, operate the first heating mode.

[0052] After operating the second mode, when the outdoor ambient temperature is higher than the first temperature, the heating capacity of the air conditioner is restored, and the heating capacity of both indoor heat exchangers can be ensured. Therefore, the first heating mode can be operated to improve the heating capacity of the air conditioner.

[0053] In some other embodiments of the present invention, the control method of the air conditioner further includes:

[0054] Obtain the target temperature of the air conditioner; after the target temperature is reduced by a preset difference, operate the first heating mode. That is to say, when the target temperature is reduced, the heating capacity requirement is reduced. At this time, both indoor heat exchangers heat simultaneously to make the air conditioner heat at full speed.

[0055] In some embodiments of the present invention, as Figure 2 shown, the control method of the air conditioner further includes:

[0056] Step S400, obtain the target temperature of the air conditioner;

[0057] Step S500, determine the second temperature according to the target temperature.

[0058] In this embodiment, the second temperature is determined by the target temperature of the air conditioner. After determining the second temperature, enter step S200. When the outdoor ambient temperature is lower than the first temperature and the temperature of the indoor heat exchanger is lower than the second temperature, operate the second heating mode.

[0059] Further, in some embodiments of the present invention, determining the second temperature according to the target temperature includes: determining the second temperature according to a relationship table between the target temperature and the second temperature. That is to say, a relationship table obtained based on experience or a preset algorithm is stored in the air conditioner. In this relationship table, the target temperature and the second temperature have a corresponding relationship. According to the relationship table, the second temperature can be directly obtained based on the target temperature.

[0060] In other embodiments of the present invention, the second temperature is determined according to a relational expression between the target temperature and the second temperature. For example, the second temperature is equal to the target temperature multiplied by a coefficient. Preferably, the higher the target temperature, the higher the corresponding second temperature.

[0061] In some embodiments of the present invention, obtaining the temperature of the indoor heat exchanger includes:

[0062] Obtaining the temperatures of two indoor heat exchangers;

[0063] Calculating the weighted average or geometric average of the temperatures of the two indoor heat exchangers to obtain the temperature of the indoor heat exchanger.

[0064] In other embodiments of the present invention, it is also possible to obtain the highest temperatures of the two indoor heat exchangers in a continuous plurality of cycles, and calculate the weighted average or geometric average of the multiple highest temperatures of the two indoor heat exchangers to obtain the temperature of the indoor heat exchanger.

[0065] In some embodiments of the present invention, the first temperature is from -18°C to -12°C. For example, the first temperature is any one of -18°C, -17°C, -16°C, -15°C, -14°C, -13°C, or -12°C, and the second temperature is from 30°C to 38°C. For example, the second temperature is any one of 30°C, 31°C, 32°C, 33°C, 34°C, 35°C, 36°C, 37°C, or 38°C.

[0066] In some embodiments of the present invention, as Figure 3 shown, the control method of the air conditioner further includes:

[0067] Step S600, obtaining the temperature of the indoor heat exchanger that is working in the second heating mode;

[0068] Step S700, controlling the rotational speed of the corresponding fan according to the temperature of the indoor heat exchanger.

[0069] Controlling the rotational speed of the corresponding fan according to the temperature of the indoor heat exchanger can make the rotational speed of the fan correspond to the temperature of the indoor heat exchanger.

[0070] Further, in some embodiments of the present invention, controlling the rotational speed of the corresponding blower according to the temperature of the indoor heat exchanger includes: determining the rotational speed according to the relationship formula between the temperature of the indoor heat exchanger and the rotational speed; the higher the temperature of the indoor heat exchanger, the higher the corresponding rotational speed.

[0071] When the temperature of the indoor heat exchanger is relatively high, the temperature of the blown air is also relatively high. Here, the rotational speed of the blower can also be higher. When the temperature of the indoor heat exchanger is relatively low, the temperature of the blown air is relatively low, and the blown air may be relatively cool. Here, the rotational speed of the blower can only be lower to avoid blowing towards the user and causing discomfort to the user.

[0072] In other embodiments of the present invention, the rotational speed is determined according to the relationship table between the temperature of the indoor heat exchanger and the rotational speed. That is, the air conditioner is internally provided with a relationship table between the temperature of the indoor heat exchanger and the rotational speed. According to this relationship table, a temperature of the indoor heat exchanger corresponds to a rotational speed of a blower.

[0073] In some embodiments of the present invention, step S200, when the outdoor ambient temperature is lower than the first temperature and the temperature of the indoor heat exchanger is lower than the second temperature, running the second heating mode includes:

[0074] Obtaining the user position indoors;

[0075] Controlling the indoor heat exchanger close to the user position to continue heating, the blower corresponding to this indoor heat exchanger continues to rotate, and controlling the other indoor heat exchanger not to work, and the blower corresponding to this indoor heat exchanger stops rotating.

[0076] When there is only one user indoors, if this user is close to a certain indoor heat exchanger, this indoor heat exchanger continues to work, and the indoor heat exchanger far from the user does not work, and the blower corresponding to this indoor heat exchanger also does not work. Here, the straight-line distance from the user to the two indoor heat exchangers can be used to determine which indoor heat exchanger the user is close to. For example, if the distance from the user to one indoor heat exchanger is 1 meter and the distance to the other indoor heat exchanger is 2 meters, then it is considered that the user is close to one indoor heat exchanger and far from the other indoor heat exchanger. When there are multiple users indoors, the user position is the position where the number of people in the most populated area in each preset area indoors is the largest. The indoor heat exchanger close to the position where the number of people in the most populated area is the largest continues to work, and the indoor heat exchanger far from the position where the number of people in the most populated area is the largest does not work, and the blower corresponding to this indoor heat exchanger also does not work. For example, there are three preset areas A, B, and C indoors, and the number of people in preset area A is the largest. Then, the straight-line distance from the center of preset area A to the two indoor heat exchangers is used to determine which indoor heat exchanger the user position is close to. Of course, the straight-line distance from the position with the largest number of people in preset area A to the two indoor heat exchangers can also be used to determine which indoor heat exchanger the user position is close to.

[0077] In some embodiments of the present invention, as Figure 4 shown, when the outdoor ambient temperature is lower than the first temperature and the indoor heat exchanger temperature is lower than the second temperature, the second heating mode is operated, and further includes:

[0078] Step S810, the fan corresponding to the heating indoor heat exchanger operates;

[0079] Step S820, when the user's position changes, determine whether the indoor heat exchanger needs to be changed;

[0080] If so, execute step S830, obtain the rotation speed of the operating fan, denoted as the current rotation speed; make the two indoor heat exchangers heat simultaneously; if not, execute step S810;

[0081] Step S840, gradually reduce the rotation speed of the operating fan until the fan stops rotating, and when the fan stops rotating, stop the corresponding indoor heat exchanger from working;

[0082] Step S850, after the two indoor heat exchangers heat simultaneously for a preset time, turn on another fan and gradually increase the rotation speed of the fan to the current rotation speed.

[0083] When the user's position changes and the magnitude of the straight-line distance from the user's position to the two indoor heat exchangers changes, it is considered that the indoor heat exchanger needs to be changed.

[0084] In some embodiments of the present invention, as Figure 5 shown, the control method of the air conditioner includes:

[0085] Step S910, the air conditioner operates in the first heating mode and obtains the outdoor ambient temperature and the indoor heat exchanger temperature;

[0086] Step S920, determine whether the outdoor ambient temperature is lower than the first temperature and whether the indoor heat exchanger temperature is lower than the second temperature; the first temperature is -15°C and the second temperature is 35°C;

[0087] If so, execute step S930, obtain the user's position indoors; if not, execute step S910;

[0088] Step S940, control the indoor heat exchanger close to the user's position to continue heating, the fan corresponding to the indoor heat exchanger continues to rotate, and control the other indoor heat exchanger not to work, and the fan corresponding to the indoor heat exchanger stops rotating;

[0089] Step S950, obtain the temperature of the indoor heat exchanger that is heating;

[0090] Step S961, when the temperature of the indoor heat exchanger is less than 40°C, the fan rotation speed is the first rotation speed;

[0091] Step S962, when the temperature of the indoor heat exchanger is between 40°C and 50°C, the fan speed is the second speed;

[0092] Step S963, when the temperature of the indoor heat exchanger is between 50°C and 60°C, the fan speed is the third speed;

[0093] Step S964, when the temperature of the indoor heat exchanger is greater than 60°C, the fan speed is the fourth speed.

[0094] Here, the fourth speed is greater than the third speed, the third speed is greater than the second speed, and the second speed is greater than the first speed.

[0095] The flowchart provided in this embodiment is not intended to indicate that the operations of the method will be performed in any specific order, or that all operations of the method are included in every case. In addition, the method may include additional operations. Within the scope of the technical concept provided by the method of this embodiment, additional changes can be made to the above method.

[0096] In some embodiments of the present invention, as Figure 7 shown, the air conditioner includes two vertically arranged air outlet parts and a control valve 600. Each air outlet part has an air duct, and each air duct is provided with an indoor heat exchanger and a fan corresponding to the indoor heat exchanger. The two indoor heat exchangers are arranged in parallel, and the control valve 600 is controlled to make the two indoor heat exchangers work simultaneously, or only make one of the indoor heat exchangers work.

[0097] When the air conditioner is in the first working mode, the control valve 600 is controlled to make the two indoor heat exchangers work simultaneously, and at this time the air conditioner heats at full speed. When the air conditioner is in the second working mode, the control valve 600 is controlled to only make one of the indoor heat exchangers work to prevent the heating capacity of the air conditioner from being insufficient due to too low outdoor ambient temperature, the temperature of the indoor heat exchanger is too low, and then the situation of blowing out relatively low-temperature hot air for heating occurs. These two indoor heat exchangers are the first indoor heat exchanger 400 and the second indoor heat exchanger 500 respectively.

[0098] In some embodiments of the present invention, as Figure 7 shown, the air conditioner further includes a compressor 100 and an evaporator 200 and an electronic expansion valve 300 that are connected in sequence downstream of the first indoor heat exchanger 400 and the second indoor heat exchanger 500. The first indoor heat exchanger 400, the second indoor heat exchanger 500 and the connected pipelines are the indoor unit part, and the compressor 100, the evaporator 200, the electronic expansion valve 300 and the connected pipelines are the outdoor unit part.

[0099] As Figure 6As shown, the arrow indicates the direction of the working fluid flow. In the prior art, during heating, the working fluid flows out from the outlet of the compressor 100, enters the first indoor heat exchanger 400 and the second indoor heat exchanger 500 to exchange heat with the indoor air, then flows out from the outlets of the first indoor heat exchanger 400 and the second indoor heat exchanger 500, passes through the electronic expansion valve 300, and absorbs heat from the outside when passing through the evaporator 200, and finally returns to the compressor 100. When the outdoor ambient temperature is very low or the evaporator 200 is severely frosted, insufficient heat can be absorbed, resulting in insufficient temperatures of the first indoor heat exchanger 400 and the second indoor heat exchanger 500, and the indoor air blown out by the air conditioner is relatively cold. As Figure 7 shown, when the outdoor temperature is relatively high, a control valve 600 is provided at the inlets of the first indoor heat exchanger 400 and the second indoor heat exchanger 500, and the entry of the working fluid into the first indoor heat exchanger 400 and the second indoor heat exchanger 500 can be controlled in a controlled manner, that is, the first heating mode. As Figure 8 shown, when the outdoor ambient temperature is very low or the evaporator 200 is severely frosted and insufficient heat can be absorbed, the control valve 600 can be controlled in a controlled manner to allow the working fluid to enter only one of the indoor heat exchangers and flow out from the outlet of this indoor heat exchanger, and the inlet of the other indoor heat exchanger is closed. In this way, the temperature of one of the indoor heat exchangers can still be kept relatively high, and the hot air blown out from this indoor heat exchanger is relatively comfortable. As Figure 9 shown, it is a schematic diagram of the second indoor heat exchanger 500 working alone. The control valve 600 is switched to allow the working fluid to enter only the second indoor heat exchanger 500, increasing the pressure of the second indoor heat exchanger 500, thereby raising the outlet air temperature. At this time, the fan corresponding to the second indoor heat exchanger 500 can maintain a constant wind speed or even increase the rotation speed. There is no working fluid flow in the first indoor heat exchanger 400, and the corresponding fan stops running. Thus, when heating at ultra-low temperatures and the evaporator 200 absorbs insufficient heat, the air blown on people is still hot air, providing a good user experience. Of course, the control valve 600 can also be switched to allow the working fluid to enter only the first indoor heat exchanger 400, enabling the first indoor heat exchanger 400 to heat. At this time, the corresponding fan operates, and the air blown out through the first indoor heat exchanger 400 is still hot air, providing a good user experience.

[0100] In some embodiments of the present invention, the air conditioner may further include a memory, a processor, and a computer program stored on the memory and running on the processor. When the computer program is executed by the processor, the steps of the control method of the air conditioner in any of the above embodiments are implemented.

[0101] A computer program for performing the operations of the present invention may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, configuration data of an integrated circuit, or source code or object code written in any combination of one or more programming languages and procedural programming languages. The computer program may be executed entirely on the user's computer, partially on the user's computer, executed as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the latter case, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer. In some embodiments, in order to perform aspects of the present invention, an electronic circuit, including, for example, a programmable logic circuit, a field-programmable gate array (FPGA), or a programmable logic array (PLA), may execute computer-readable program instructions by utilizing the state information of the computer-readable program instructions to personalize the electronic circuit.

[0102] For the purposes of the description of this embodiment, a memory is a tangible device capable of retaining and storing a computer program, and it can be any device that can contain, store, communicate, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. More specific examples (non-exhaustive list) of the memory include the following: portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), static random access memory (SRAM), portable compact disc read-only memory (CD-ROM), digital versatile disc (DVD), memory stick, floppy disk, mechanically encoded device, and any suitable combination of the above. The memory also provides temporary storage space for the operation of the instructions during operation. The processor is adapted to execute the stored instructions, and the processor may be a single-core processor, a multi-core processor, a computing cluster, or any number of other configurations.

[0103] At this point, those skilled in the art should recognize that although numerous exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived from the disclosed content of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and construed as covering all such other variations or modifications.

Claims

1. A method for controlling an air conditioner, characterized in that: The air conditioner comprises two indoor heat exchangers; the air conditioner has a first heating mode in which both indoor heat exchangers are heating, and a second heating mode in which one indoor heat exchanger is heating and the other indoor heat exchanger is not working; comprising: When the air conditioner operates in the first heating mode, obtaining an outdoor ambient temperature and an indoor heat exchanger temperature; When the outdoor environment temperature is lower than a first temperature and the indoor heat exchanger temperature is lower than a second temperature, the second heating mode is operated.

2. The air conditioner control method according to claim 1, characterized in that: Also includes: When the outdoor ambient temperature is higher than the first temperature, operating the first heating mode; or Obtaining a target temperature of the air conditioner; After the target temperature is reduced by a preset difference, the first heating mode is operated.

3. The air conditioner control method according to claim 1, characterized in that: Also includes: Obtaining a target temperature of the air conditioner; determining the second temperature according to the target temperature; Determining the second temperature according to the target temperature includes: determining the second temperature according to a relationship table between the target temperature and the second temperature; Alternatively, the second temperature is determined according to a relationship between the target temperature and the second temperature; a higher target temperature corresponds to a higher second temperature.

4. The air conditioner control method according to claim 1, characterized in that: The obtaining of the indoor heat exchanger temperature comprises: Obtaining the temperatures of the two indoor heat exchangers; The weighted average or geometric mean of the temperatures of the two indoor heat exchangers is calculated to obtain the indoor heat exchanger temperature.

5. The air conditioner control method according to claim 1, characterized in that: The first temperature is -18°C to -12°C, and the second temperature is 30°C to 38°C.

6. The air conditioner control method according to claim 1, characterized in that: Also includes: Acquire the temperature of the indoor heat exchanger operating in the second heating mode; Controlling the speed of the corresponding fan according to the temperature of the indoor heat exchanger; in Controlling the speed of the corresponding fan according to the temperature of the indoor heat exchanger includes: The rotational speed is determined according to a relationship table between the temperature of the indoor heat exchanger and the rotational speed, or according to a relationship formula between the temperature of the indoor heat exchanger and the rotational speed; a higher temperature of the indoor heat exchanger corresponds to a higher rotational speed.

7. The air conditioner control method according to claim 1, characterized in that: When the outdoor environment temperature is lower than a first temperature and the indoor heat exchanger temperature is lower than a second temperature, running the second heating mode includes: Get the user's indoor location; The indoor heat exchanger near the user position is controlled to continue heating, and the fan corresponding to the indoor heat exchanger continues to rotate, and the other indoor heat exchanger is controlled not to work, and the fan corresponding to the indoor heat exchanger stops rotating.

8. The air conditioner control method according to claim 7, characterized in that: When the outdoor environment temperature is lower than the first temperature and the indoor heat exchanger temperature is lower than the second temperature, running the second heating mode further includes: When the user position changes, determining whether the indoor heat exchanger needs to be changed; If yes, obtain the speed of the running fan and record it as the current speed; make the two indoor heat exchangers heat at the same time; gradually reducing the rotation speed of the running fan until the fan stops rotating, and stopping the corresponding indoor heat exchanger when the fan stops rotating; After the two indoor heat exchangers are allowed to heat simultaneously for a preset time, another fan is turned on and the rotation speed of the fan is gradually increased to the current rotation speed.

9. The air conditioner control method according to claim 1, characterized in that: The air conditioner comprises two vertically arranged air outlets and a control valve; each of the air outlets has an air duct, and each of the air ducts is provided with an indoor heat exchanger and a fan corresponding to the indoor heat exchanger; The two indoor heat exchangers are arranged in parallel, and the control valve is controlled to make the two indoor heat exchangers work simultaneously, or only make one of the indoor heat exchangers work.

10. An air conditioner, characterized in that: The invention comprises a memory, a processor and a computer program stored in the memory, wherein the processor executes the computer program to implement the steps of the air conditioner control method according to any one of claims 1 to 9.

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