CN115899954A - Air conditioner and control method thereof - Google Patents
Air conditioner and control method thereof Download PDFInfo
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- CN115899954A CN115899954A CN202211441013.3A CN202211441013A CN115899954A CN 115899954 A CN115899954 A CN 115899954A CN 202211441013 A CN202211441013 A CN 202211441013A CN 115899954 A CN115899954 A CN 115899954A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The invention provides an air conditioner and a control method thereof, wherein the air conditioner comprises a variable frequency compressor, the air conditioner is preset with a variable frequency mode and a fixed frequency mode, and the control method comprises the following steps: receiving a fixed frequency mode entering instruction; acquiring the refrigerating/heating state and the outdoor temperature of the air conditioner, and judging whether the air conditioner meets the preset constant-frequency mode entering condition or not according to the refrigerating/heating state and the outdoor temperature; if the frequency is satisfied, the air conditioner enters a fixed frequency mode, and the compressor is operated at a fixed frequency; and acquiring the indoor temperature, and if the air conditioner is in a refrigerating state and the indoor temperature is more than or equal to a first preset temperature, or the air conditioner is in a heating state and the indoor temperature is less than or equal to a second preset temperature, maintaining the air conditioner in a fixed frequency mode. The air conditioner has a high-efficiency fixed frequency mode.
Description
Technical Field
The invention relates to the technical field of air conditioning, in particular to an air conditioner and a control method thereof.
Background
With the development of technology, the inverter air conditioner has become the mainstream of the market. The inverter air conditioner adopts an inverter compressor, and the operating frequency of the inverter compressor is adjustable so as to adjust the flow of a refrigerant of a refrigeration system and further adjust the refrigerating capacity/heating capacity.
In the prior art, the frequency control logic of the compressor of a plurality of inverter air conditioners is designed, but the condition that the refrigerating/heating speed cannot meet the requirement of a user often still occurs.
Disclosure of Invention
The present invention is directed to solve at least one of the above-mentioned drawbacks of the prior art, and to provide an air conditioner with a high efficiency and fixed frequency mode and a control method thereof.
The invention further aims to improve the intelligent level of the wall-mounted air conditioner indoor unit.
In one aspect, the present invention provides a method for controlling an air conditioner, where the air conditioner includes an inverter compressor, and the air conditioner is preset with an inverter mode and a fixed frequency mode, and the method includes:
receiving a fixed frequency mode entering instruction;
acquiring the refrigerating/heating state and the outdoor temperature of the air conditioner, and judging whether the air conditioner meets a preset constant-frequency mode entering condition or not according to the refrigerating/heating state and the outdoor temperature;
if the frequency is satisfied, the air conditioner enters the fixed frequency mode, and the compressor is operated at a fixed frequency;
and acquiring the indoor temperature, if the air conditioner is in a refrigerating state and the indoor temperature is more than or equal to a first preset temperature, or the air conditioner is in a heating state and the indoor temperature is less than or equal to a second preset temperature, so that the air conditioner is maintained in the fixed frequency mode.
Optionally, the step of "obtaining the cooling/heating state and the outdoor temperature of the air conditioner, and accordingly determining whether the cooling/heating state and the outdoor temperature meet the preset constant frequency mode entering condition" further includes:
and if the frequency conversion mode does not meet the requirement, the air conditioner is operated in the frequency conversion mode.
Optionally, the control method further includes: if the air conditioner is in a refrigerating state and the indoor temperature is lower than the first preset temperature, or the air conditioner is in a heating state and the indoor temperature is higher than the second preset temperature, acquiring a temperature set by a user;
if the difference value between the indoor temperature and the user set temperature in the refrigerating state is smaller than or equal to a first temperature difference, or the difference value between the indoor temperature and the user set temperature in the heating state is smaller than or equal to a second temperature difference, enabling the air conditioner to exit the fixed frequency mode; otherwise, the fixed frequency mode is maintained.
Optionally, the first temperature difference is between 2 ℃ and 4 ℃;
the second temperature difference is between 2 ℃ and 4 ℃.
Optionally, the step of "if the difference between the indoor temperature and the user-set temperature in the cooling state is less than or equal to a first temperature difference, or the difference between the indoor temperature and the user-set temperature in the heating state is less than or equal to a second temperature difference, so that the air conditioner exits the fixed frequency mode" further includes: and enabling the air conditioner to be switched into the frequency conversion mode.
Optionally, the fixed frequency mode entry condition is:
in a refrigerating state, the outdoor temperature is greater than or equal to a preset minimum temperature threshold;
and in the heating state, the outdoor temperature is less than or equal to a preset maximum temperature threshold.
Optionally, the minimum temperature threshold is between 13 ℃ and 17 ℃;
the maximum temperature threshold is between 23 ℃ and 27 ℃.
Optionally, the step of "if satisfied, making the air conditioner enter a constant frequency mode, and making the compressor operate at a constant frequency" includes:
determining a temperature interval in which the outdoor temperature is located;
and inquiring the corresponding relation between the corresponding temperature interval and the frequency of the compressor according to the refrigerating/heating state of the air conditioner, and determining the frequency of the constant-frequency operation of the compressor.
Optionally, in the "corresponding relationship between the temperature interval and the compressor frequency" corresponding to the refrigeration state, the higher the temperature is, the higher the compressor frequency corresponding to the temperature interval is;
in the "correspondence relationship between temperature range and compressor frequency" corresponding to the heating state, the lower the temperature, the higher the compressor frequency corresponding to the temperature range.
In another aspect, the present invention also provides an air conditioner, including:
a variable frequency compressor; and
a controller comprising a processor and a memory, the memory storing a computer program for implementing the control method according to any of the above when executed by the processor.
The air conditioner of the invention not only has a conventional frequency conversion mode, but also is particularly provided with a fixed frequency mode which can be selected to enter. The constant frequency mode can enable the compressor to be kept in a higher frequency and constant speed operation, so that the effect of quick refrigeration/heating is achieved, and the special requirements of users are met.
In the control method, after the air conditioner receives the fixed frequency mode entering instruction, whether the fixed frequency mode is necessary to enter is judged according to the refrigerating/heating state and the outdoor temperature, if the fixed frequency mode is unnecessary, the fixed frequency mode is not entered, and the variable frequency mode is still operated, so that energy conservation is realized (the energy-saving effect of the variable frequency mode is better).
And, during the execution of the fixed frequency mode, it is determined whether the fixed frequency mode needs to be maintained at any time according to the variation of the indoor temperature. And after the indoor temperature meets the exit condition, further judging whether the difference value between the indoor temperature and the set temperature meets the exit condition, and exiting the fixed-frequency mode after the difference value meets the exit condition. This provides a double exit condition for a given frequency mode. Therefore, the control method of the invention sets strict entry conditions and exit conditions for the fixed frequency mode, so that the operation of the fixed frequency mode is more valuable, the quick refrigerating and heating effect is better, and the overall energy efficiency of the air conditioner is higher.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily to scale. In the drawings:
fig. 1 is a schematic block diagram of an air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic view of a control method of an air conditioner according to an embodiment of the present invention;
fig. 3 is a flowchart of a control method of an air conditioner according to an embodiment of the present invention.
Detailed Description
An air conditioner and a control method thereof according to an embodiment of the present invention will be described with reference to fig. 1 to 3.
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 various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of instructions, 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. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The flowcharts provided by this embodiment are not intended to indicate that the operations of the method are to be performed in any particular order, or that all the operations of the method are included in each case. Further, the method may include additional operations. Additional variations on the above-described method are possible within the scope of the technical ideas provided by the method of this embodiment.
It should be noted that the logic and/or steps represented in the flowcharts or otherwise described herein, such as an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions.
An embodiment of the present invention provides an air conditioner. Air conditioners are used to condition indoor air, including conditioning the temperature, humidity, air quality of the air, humidifying the indoor air, dehumidifying, introducing fresh air, and so on. The air conditioner is composed of an evaporator, a condenser, a compressor 90, a throttling device and other necessary elements to form a vapor compression refrigeration cycle system, so that cold air/hot air is output through a fan, and refrigeration and heating of indoor environment are achieved.
The air conditioner of the embodiment of the invention can be a household air conditioner and also can be a central air conditioner. Specifically, the specific form of the air conditioner can be various forms such as a split wall-mounted type, a split vertical type, an integral type and a ceiling type. The embodiment of the present invention does not limit the specific form of the air conditioner at all.
In the embodiment of the present invention, the compressor 90 matched to the air conditioner is an inverter compressor, and specifically, may be a dc inverter compressor, and the operating frequency (positive correlation with the rotation speed) of the compressor is variable. When the air conditioner load is higher, the frequency of the compressor can be adjusted, and the refrigerating/heating quantity is enhanced. When the air conditioner load is lower, the frequency of the compressor can be adjusted, the refrigerating/heating quantity is reduced, the air conditioner does not need to be shut down, so that the fluctuation of the indoor temperature is smaller, the human body is more comfortable, the compressor can be prevented from being frequently shut down, and the energy efficiency of the air conditioner is higher.
The air conditioner of the invention not only has a conventional frequency conversion mode, but also is particularly provided with a fixed frequency mode which can be selected to enter. The constant frequency mode enables the compressor 90 to operate at a higher frequency and a constant speed, thereby achieving the effect of rapid cooling/heating and meeting the special requirements of users.
As shown in fig. 2, the wall-mounted air conditioner indoor unit according to the embodiment of the present invention further includes a controller 800. The controller 800 includes a processor 810 and a memory 820, the memory 820 stores a computer program 821, and the computer program 821 is used to implement the control method of the air conditioner according to any embodiment of the present invention when the computer program 821 is executed by the processor 810.
The embodiment of the invention provides a control method of an air conditioner.
Fig. 2 is a schematic diagram of a control method of an air conditioner according to an embodiment of the present invention.
As shown in fig. 2, the control method of an air conditioner according to an embodiment of the present invention may generally include the steps of:
step S202: and receiving a fixed frequency mode entering instruction.
The command may be sent by a user through a control end of the air conditioner, and the control end may be a remote controller, a control panel, an app of the intelligent terminal, and the like. The user sends the instruction to express the intention of the air conditioner to enter the fixed frequency mode. The default operation mode of the air conditioner is a conventional frequency conversion mode. If the fixed frequency mode entering instruction is not received, the air conditioner can not actively enter the fixed frequency mode. The user can send the control instruction through the control end at any time when the air conditioner is just started or in variable-frequency operation.
Step S204: the cooling/heating state and the outdoor temperature Tw of the air conditioner are acquired.
When a user turns on the air conditioner, the user needs to determine whether to cool or heat, and needs to select through a control end. The air conditioner can detect the outdoor temperature Tw by the outdoor temperature detecting device 52 on the outdoor unit, i.e. the temperature of the outdoor environment, and the outdoor temperature detecting device 52 can be a temperature sensor, which is electrically connected to the controller 800.
Step S206: and judging whether the outdoor temperature Tw meets a preset constant frequency mode entering condition or not. If yes, step S208 is executed. If not, the operation goes to step S214: the air conditioner can run in the frequency conversion mode, and can also send a prompt to a user to remind the user that the fixed frequency mode is not required to be started currently.
The air conditioner has respective 'fixed frequency mode entering conditions' in the two states of cooling and heating. Specifically, in the cooling state, the "fixed frequency mode entry condition" is: the outdoor temperature Tw is greater than or equal to a preset minimum temperature threshold value T1, namely Tw is greater than or equal to T1. The minimum temperature threshold T1 is between 13 ℃ and 17 ℃, i.e.13 ℃ T1. Ltoreq.17 ℃, for example 15 ℃. If the outdoor temperature Tw is not higher than 15 ℃, the air conditioner considers that the outdoor temperature is low enough, the refrigeration load of the air conditioner is extremely small, and the high-rotation-speed fixed frequency mode does not need to be operated, so that the air conditioner does not enter the fixed frequency mode. In the heating state, the "fixed frequency mode entry condition" is as follows: the outdoor temperature Tw is less than or equal to a preset maximum temperature threshold T2, namely Tw is less than or equal to T2. The maximum temperature threshold T2 is between 23 ℃ and 27 ℃, i.e.23 ℃ T2. Ltoreq.27 ℃, for example 25 ℃. If the outdoor temperature Tw is not lower than 25 ℃, the air conditioner considers that the outdoor temperature is high enough, the heating load of the air conditioner is extremely small, and the air conditioner does not need to operate a high-rotation-speed constant frequency mode, so that the air conditioner does not enter the constant frequency mode.
Step S208: the air conditioner is put into a constant frequency mode, and the compressor 90 is operated at a constant frequency. That is, it is determined in step S206 that the outdoor temperature Tw satisfies the constant frequency mode entry condition, and thus the constant frequency mode can be entered to satisfy the user' S demand for rapid cooling/heating.
Step S210: and obtaining the indoor temperature Tn, and judging whether the air conditioner is in a refrigerating state and the indoor temperature Tn is greater than or equal to a first preset temperature T10 or whether the air conditioner is in a heating state and the indoor temperature Tn is less than or equal to a second preset temperature T20. If yes, go to step S212.
Step S212: the air conditioner is maintained in a constant frequency mode.
The air conditioner may detect the indoor temperature Tw by using an indoor temperature detecting device 51 on the indoor unit, that is, the temperature of the indoor environment, and the indoor temperature detecting device 51 may be a temperature sensor electrically connected to the controller 800 so as to transmit temperature data to the controller 800.
The first preset temperature T10 is set to a preliminary target temperature for air-conditioning cooling, for example, to 27 ℃. When the indoor temperature Tn is more than or equal to T10, the quick cooling effect is not completely achieved, so that the air conditioner is kept to operate in the fixed frequency mode. Similarly, the second preset temperature T20 is set to a preliminary target temperature for air conditioning heating, for example, to 25 ℃. When the indoor temperature Tn is less than or equal to T20, the effect of quick heating is not completely achieved, and therefore the air conditioner is enabled to maintain the constant frequency mode to operate.
In some embodiments, the step of "if the air conditioner enters the constant frequency mode and the compressor 90 is operated at the constant frequency if the condition is satisfied" (i.e. step S208) specifically includes:
step (1): the temperature interval in which the outdoor temperature Tw is located is determined.
Step (2): according to the refrigerating/heating state of the air conditioner, the corresponding relation between the corresponding temperature interval and the frequency of the compressor is inquired, and the frequency of the fixed-frequency operation of the compressor 90 is determined.
Preferably, in the "correspondence relationship between temperature zone and compressor frequency" corresponding to the cooling state, the compressor frequency corresponding to the temperature zone having a higher temperature is larger. In the "correspondence relationship between temperature range and compressor frequency" corresponding to the heating state, the lower the temperature, the higher the compressor frequency corresponding to the temperature range.
For example, in a cooling state, the "correspondence relationship between the temperature range and the compressor frequency" is: if Tw is more than or equal to 55 ℃, the corresponding compressor frequency is H1. If Tw is more than or equal to 45 ℃ and less than 55 ℃, the corresponding compressor frequency is H2. If Tw is more than or equal to 35 ℃ and less than 45 ℃, the corresponding compressor frequency is H3. If Tw is more than or equal to 25 ℃ and less than 35 ℃, the corresponding compressor frequency is H4. If Tw is more than or equal to 15 ℃ and less than 25 ℃, the corresponding compressor frequency is H5. Wherein H1 > H2 > H3 > H4 > H5. H1 may be set to the maximum allowable frequency of operation of the inverter compressor, for example, 100Hz.
In the heating state, the "temperature interval and compressor frequency correspondence" is: if Tw is less than or equal to-15 ℃, the corresponding compressor frequency is H1. If Tw is more than or equal to-15 ℃ and less than-5 ℃, the corresponding compressor frequency is H2. If Tw is more than or equal to 5 ℃ below zero and less than 5 ℃, the corresponding compressor frequency is H3. If Tw is more than or equal to 5 ℃ and less than 15 ℃, the corresponding compressor frequency is H4. If Tw is more than or equal to 15 ℃ and less than 25 ℃, the corresponding compressor frequency is H5.
Fig. 3 is a flowchart of a control method of an air conditioner according to an embodiment of the present invention.
In some optional embodiments, the air conditioner may achieve a higher technical effect by further optimizing and configuring the above steps, and the following describes in detail the control method of the air conditioner of this embodiment in combination with a description of an optional execution flow of this embodiment, where this embodiment is merely an illustration of the execution flow, and in a specific implementation, an execution sequence and an operation condition of some steps may be modified according to specific implementation requirements.
As shown in fig. 3, the control method according to an embodiment of the present invention may sequentially perform the following steps:
step S302: and receiving a fixed frequency mode entering instruction.
Step S304: the cooling/heating state and the outdoor temperature Tw of the air conditioner are acquired.
Step S306: and judging whether the outdoor temperature Tw meets a preset constant frequency mode entering condition or not. If yes, step S308 is executed. If not, the operation proceeds to step S310: the air conditioner can run in the frequency conversion mode, and can also send a prompt to a user to remind the user that the fixed frequency mode is not required to be started currently.
Step S308: the air conditioner is put into a constant frequency mode, and the compressor 90 is operated at a constant frequency. That is, it is determined in step S206 that the outdoor temperature Tw satisfies the constant frequency mode entry condition, and thus the constant frequency mode can be entered to satisfy the user' S demand for rapid cooling/heating.
The method specifically comprises the following steps:
step (1): the temperature interval in which the outdoor temperature Tw is located is determined.
Step (2): according to the refrigerating/heating state of the air conditioner, the corresponding relation between the corresponding temperature interval and the frequency of the compressor is inquired, and the frequency of the fixed-frequency operation of the compressor is determined.
Step S312: and acquiring an indoor temperature Tn, and judging whether the air conditioner is in a refrigerating state and the indoor temperature Tn is greater than or equal to a first preset temperature T10 or whether the air conditioner is in a heating state and the indoor temperature Tn is less than or equal to a second preset temperature T20. If yes, go to step S314: the air conditioner is maintained in a constant frequency mode. If not, go to step S316.
Step S316: acquiring a temperature Ts set by a user; and judging whether the difference value between the indoor temperature Tn and the user set temperature Ts in the refrigerating state is smaller than or equal to a first temperature difference or whether the difference value between the indoor temperature Tn and the user set temperature Ts in the heating state is smaller than or equal to a second temperature difference. If yes, go to step S318, otherwise go to step S314. The first temperature difference is between 2 ℃ and 4 ℃, for example 2 ℃, 3 ℃ or 4 ℃. The second temperature difference is between 2 ℃ and 4 ℃, for example 2 ℃, 3 ℃ or 4 ℃.
Step S318: and enabling the air conditioner to exit the fixed frequency mode. The air conditioner may then be switched to a variable frequency mode.
In the two steps, whether the fixed frequency mode needs to continue to operate or not is determined by judging whether Tn and Ts are close enough or not.
In the control method of the embodiment of the invention, after receiving the fixed frequency mode entering instruction, the air conditioner judges whether the fixed frequency mode is necessary to enter according to the refrigeration/heating state and the outdoor temperature, if not, the air conditioner does not enter the fixed frequency mode, and the air conditioner still operates the variable frequency mode to realize energy conservation, because the energy conservation effect of the variable frequency mode is better.
And, during the execution of the fixed frequency mode, it is determined whether the fixed frequency mode needs to be maintained at any time according to the variation of the indoor temperature. And after the indoor temperature meets the exit condition, further judging whether the difference value between the indoor temperature and the set temperature meets the exit condition, and exiting the fixed-frequency mode after the difference value meets the exit condition. This provides a double exit condition for a given frequency mode. Therefore, the control method of the invention sets strict entry conditions and exit conditions for the fixed frequency mode, so that the operation of the fixed frequency mode has higher value and better effect.
Thus, it should be appreciated by those skilled in the art that while various exemplary embodiments of the invention have been shown and described in detail herein, many other variations or modifications which are consistent with the principles of this invention may be determined or derived directly from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (10)
1. A control method of an air conditioner, the air conditioner comprises an inverter compressor, an inverter mode and a fixed frequency mode are preset in the air conditioner, and the control method comprises the following steps:
receiving a fixed frequency mode entering instruction;
acquiring the refrigerating/heating state and the outdoor temperature of the air conditioner, and judging whether the air conditioner meets the preset constant-frequency mode entering condition or not according to the refrigerating/heating state and the outdoor temperature;
if the frequency is satisfied, the air conditioner enters the fixed frequency mode, and the compressor is operated at a fixed frequency;
and acquiring the indoor temperature, and if the air conditioner is in a refrigerating state and the indoor temperature is more than or equal to a first preset temperature, or the air conditioner is in a heating state and the indoor temperature is less than or equal to a second preset temperature, so that the air conditioner maintains the fixed frequency mode.
2. The control method according to claim 1, wherein
The step of obtaining the cooling/heating state and the outdoor temperature of the air conditioner and judging whether the cooling/heating state and the outdoor temperature meet the preset constant frequency mode entering condition or not further comprises the following steps:
and if the frequency conversion mode is not met, enabling the air conditioner to operate in the frequency conversion mode.
3. The control method according to claim 1, further comprising:
if the air conditioner is in a refrigerating state and the indoor temperature is lower than the first preset temperature, or the air conditioner is in a heating state and the indoor temperature is higher than the second preset temperature, acquiring a temperature set by a user;
if the difference value between the indoor temperature and the user set temperature in the refrigerating state is smaller than or equal to a first temperature difference, or the difference value between the indoor temperature and the user set temperature in the heating state is smaller than or equal to a second temperature difference, enabling the air conditioner to exit the fixed frequency mode; otherwise, the fixed frequency mode is maintained.
4. The control method according to claim 3, wherein
The first temperature difference is between 2 ℃ and 4 ℃;
the second temperature difference is between 2 ℃ and 4 ℃.
5. The control method according to claim 3, wherein
If the difference between the indoor temperature and the user-set temperature is less than or equal to the first temperature difference in the refrigeration state, or the difference between the indoor temperature and the user-set temperature is less than or equal to the second temperature difference in the heating state, the air conditioner is made to exit the fixed frequency mode, and the method further comprises the following steps: and enabling the air conditioner to be switched into the frequency conversion mode.
6. The control method according to claim 1, wherein the fixed frequency mode entry condition is:
in a refrigerating state, the outdoor temperature is greater than or equal to a preset minimum temperature threshold;
and in the heating state, the outdoor temperature is less than or equal to a preset maximum temperature threshold.
7. The control method according to claim 6, wherein
The minimum temperature threshold is between 13 ℃ and 17 ℃;
the maximum temperature threshold is between 23 ℃ and 27 ℃.
8. The control method according to claim 1, wherein the step of causing the air conditioner to enter a constant frequency mode and causing the compressor to operate at a constant frequency if satisfied, comprises:
determining a temperature interval in which the outdoor temperature is located;
and inquiring the corresponding relation between the corresponding temperature interval and the frequency of the compressor according to the refrigerating/heating state of the air conditioner, and determining the frequency of the fixed-frequency operation of the compressor.
9. The control method according to claim 8, wherein
In the corresponding relation between the temperature interval and the compressor frequency corresponding to the refrigeration state, the higher the temperature is, the higher the compressor frequency corresponding to the temperature interval is;
in the "correspondence relationship between temperature range and compressor frequency" corresponding to the heating state, the lower the temperature, the higher the compressor frequency corresponding to the temperature range.
10. An air conditioner, comprising:
a variable frequency compressor; and
a controller comprising a processor and a memory, the memory storing a computer program for implementing the control method according to any one of claims 1 to 9 when executed by the processor.
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