CN108050667B - Method for calculating frequency threshold of compressor, multi-split air conditioner and storage medium - Google Patents
Method for calculating frequency threshold of compressor, multi-split air conditioner and storage medium Download PDFInfo
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- CN108050667B CN108050667B CN201810025584.6A CN201810025584A CN108050667B CN 108050667 B CN108050667 B CN 108050667B CN 201810025584 A CN201810025584 A CN 201810025584A CN 108050667 B CN108050667 B CN 108050667B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/021—Inverters therefor
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Abstract
The invention discloses a method for calculating a compressor frequency threshold of a multi-split air conditioner, which comprises the following steps: acquiring a started indoor unit of the multi-split air conditioner; calculating the total nominal of the indoor units according to the capacity nominal of the started indoor units; and calculating the frequency threshold of the compressor according to the total nominal value of the indoor unit. The invention also discloses a multi-split air conditioner and a computer readable storage medium. The invention calculates the frequency threshold value of the compressor according to the starting number of the indoor units of the multi-split air conditioner, thereby avoiding the problems of frequent starting and stopping of the compressor and the like.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a method for calculating a compressor frequency threshold of a multi-split air conditioner, the multi-split air conditioner and a computer readable storage medium.
Background
At present, when a multi-split air conditioner works, the starting number of indoor units is not fixed, but is a random number which is changed within a range. However, in the prior art, the frequency threshold of the compressor in the air conditioning system is set based on all the indoor units being in the on state, and the value of the frequency threshold is often large. For example, when only one indoor unit is in the cooling mode, since the difference between the indoor temperature and the set temperature is large when the indoor unit is started, the frequency of the compressor is rapidly increased, so that the indoor temperature is easily lower than the set temperature, and the reduction of the frequency of the compressor requires time, which causes the problem that the compressor is frequently stopped and started.
Disclosure of Invention
The invention mainly aims to provide a method for calculating a frequency threshold of a compressor of a multi-split air conditioner, the multi-split air conditioner and a computer readable storage medium, wherein the frequency threshold of the compressor is calculated according to the starting number of indoor units of the multi-split air conditioner, so that the problems that the compressor is frequently stopped and started and the like are avoided.
In order to achieve the above object, the present invention provides a method for calculating a compressor frequency threshold of a multi-split air conditioner, which comprises the following steps:
acquiring a started indoor unit of the multi-split air conditioner;
calculating the total nominal of the indoor units according to the capacity nominal of the started indoor units;
and calculating the frequency threshold of the compressor according to the total nominal value of the indoor unit.
Preferably, the step of calculating the frequency threshold of the compressor according to the total nominal of the indoor units comprises:
acquiring temperature information of the air conditioner, wherein the temperature information comprises at least one of the environment temperature of the started indoor unit, the set temperature of the started indoor unit and the environment temperature of the outdoor unit;
and calculating the frequency threshold value of the compressor according to the total nominal value of the indoor unit and the temperature information.
Preferably, the step of calculating the frequency threshold of the compressor according to the total nominal value of the indoor unit and the temperature information includes:
calculating a first frequency compensation value of the compressor according to the environment temperature of the started indoor unit or the set temperature of the started indoor unit;
calculating a second frequency compensation value of the compressor according to the environment temperature of the environment where the outdoor unit is located;
and calculating the frequency threshold value of the compressor according to the total nominal value of the indoor unit, the first frequency compensation value and the second frequency compensation value, or the total nominal value of the indoor unit and the first frequency compensation value, or the total nominal value of the indoor unit and the second frequency compensation value.
Preferably, the step of calculating the first frequency compensation value of the compressor includes:
calculating the average value of the environmental temperature of the started indoor unit or the average value of the set temperature of the started indoor unit;
and calculating a first frequency compensation value of the compressor according to the average value of the current operation mode of the air conditioner and the environment temperature of the environment where the indoor unit is started or the average value of the current operation mode of the air conditioner and the set temperature of the started indoor unit.
Preferably, the step of calculating the second frequency compensation value of the compressor includes:
and calculating a second frequency compensation value of the compressor according to the current operation mode of the air conditioner and the environment temperature of the environment where the outdoor unit is located.
Preferably, after calculating the frequency threshold of the compressor, the method further includes:
acquiring the running frequency of the compressor at fixed time;
and when the running frequency is greater than the frequency threshold value, controlling the compressor to run at the frequency threshold value.
In order to achieve the above object, the present invention also provides a multi-split air conditioner, including:
the calculation program of the compressor frequency threshold of the multi-split air conditioner is stored on the memory and can be operated on the processor, and when being executed by the processor, the calculation program of the compressor frequency threshold of the multi-split air conditioner realizes the steps of the calculation method of the compressor frequency threshold of the multi-split air conditioner.
In order to achieve the above object, the present invention further provides a computer readable storage medium, wherein a program for calculating a compressor frequency threshold of a multi-split air conditioner is stored on the computer readable storage medium, and when the program for calculating a compressor frequency threshold of a multi-split air conditioner is executed by a processor, the steps of the method for calculating a compressor frequency threshold of a multi-split air conditioner are implemented.
The invention provides a method for calculating a compressor frequency threshold of a multi-split air conditioner, the multi-split air conditioner and a computer readable storage medium. The invention calculates the frequency threshold value of the compressor according to the starting number of the indoor units of the multi-split air conditioner, thereby avoiding the problems of frequent stopping and starting of the compressor and the like.
Drawings
Fig. 1 is a schematic diagram of a hardware operating environment of a terminal according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a method for calculating a frequency threshold of a compressor of a multi-split air conditioner according to a first embodiment of the present invention;
FIG. 3 is a schematic view illustrating a detailed process of calculating the frequency threshold of the compressor according to the total nominal value of the indoor unit according to the present invention;
FIG. 4 is a schematic view of a detailed process for calculating the frequency threshold of the compressor according to the present invention;
FIG. 5 is a schematic view illustrating a detailed process of calculating a first frequency compensation value of a compressor according to the present invention;
FIG. 6 is a schematic view illustrating a detailed process of calculating a second frequency compensation value of the compressor according to the present invention;
fig. 7 is a flowchart illustrating a method for calculating a frequency threshold of a compressor of a multi-split air conditioner according to a sixth embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a method for calculating the frequency threshold of a compressor of a multi-split air conditioner, which is used for calculating the frequency threshold of the compressor according to the starting number of indoor units of the multi-split air conditioner, so that the problems that the compressor is frequently stopped and started and the like are solved.
As shown in fig. 1, fig. 1 is a schematic diagram of a hardware operating environment of a terminal according to an embodiment of the present invention;
the terminal of the embodiment of the invention is an air conditioner.
As shown in fig. 1, the terminal may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, a communication bus 1002. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (such as a non-volatile memory, e.g., disk storage) and the memory 1005 may optionally also be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration of the terminal shown in fig. 1 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a kind of computer storage medium, may include therein a program for calculating a compressor frequency threshold of an operating system, a network communication module, a user interface module, and a multi-split air conditioner.
In the terminal shown in fig. 1, the network interface 1004 is mainly used for connecting to a backend server and performing data communication with the backend server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; and the processor 1001 may be configured to call the calculation program of the compressor frequency threshold of the multi-split air conditioner stored in the memory 1005, and perform the following operations:
acquiring a started indoor unit of the multi-split air conditioner;
calculating the total nominal of the indoor units according to the capacity nominal of the started indoor units;
and calculating the frequency threshold of the compressor according to the total nominal value of the indoor unit.
Further, the processor 1001 may call the calculation program of the compressor frequency threshold of the multi-split air conditioner stored in the memory 1005, and further perform the following operations:
acquiring temperature information of the air conditioner, wherein the temperature information comprises at least one of the environment temperature of the started indoor unit, the set temperature of the started indoor unit and the environment temperature of the outdoor unit;
and calculating the frequency threshold value of the compressor according to the total nominal value of the indoor unit and the temperature information.
Further, the processor 1001 may call the calculation program of the compressor frequency threshold of the multi-split air conditioner stored in the memory 1005, and further perform the following operations:
calculating a first frequency compensation value of the compressor according to the environment temperature of the started indoor unit or the set temperature of the started indoor unit;
calculating a second frequency compensation value of the compressor according to the environment temperature of the environment where the outdoor unit is located;
and calculating the frequency threshold value of the compressor according to the total nominal value of the indoor unit, the first frequency compensation value and the second frequency compensation value, or the total nominal value of the indoor unit and the first frequency compensation value, or the total nominal value of the indoor unit and the second frequency compensation value.
Further, the processor 1001 may call the calculation program of the compressor frequency threshold of the multi-split air conditioner stored in the memory 1005, and further perform the following operations:
calculating the average value of the environmental temperature of the started indoor unit or the average value of the set temperature of the started indoor unit;
and calculating a first frequency compensation value of the compressor according to the average value of the current operation mode of the air conditioner and the environment temperature of the environment where the indoor unit is started or the average value of the current operation mode of the air conditioner and the set temperature of the started indoor unit.
Further, the processor 1001 may call the calculation program of the compressor frequency threshold of the multi-split air conditioner stored in the memory 1005, and further perform the following operations:
and calculating a second frequency compensation value of the compressor according to the current operation mode of the air conditioner and the environment temperature of the environment where the outdoor unit is located.
Further, the processor 1001 may call the calculation program of the compressor frequency threshold of the multi-split air conditioner stored in the memory 1005, and further perform the following operations:
acquiring the running frequency of the compressor at fixed time;
and when the running frequency is greater than the frequency threshold value, controlling the compressor to run at the frequency threshold value.
Referring to fig. 2, in a first embodiment, the method for calculating the compressor frequency threshold of the one-drive-many air conditioner includes the steps of:
step S10, obtaining the starting indoor unit of the multi-split air conditioner;
in this embodiment, the multi-split air conditioner has a plurality of indoor units, and can be used in a plurality of rooms, so that the number of the indoor units of the multi-split air conditioner is not fixed, and only one indoor unit may be in the on state, or a plurality of indoor units may be in the on state.
It should be noted that the outdoor unit obtains the on state of the indoor unit through communication. The outdoor unit may know the power-on state of the indoor unit in real time, so as to recalculate the frequency threshold of the compressor when detecting that the power-on state of the indoor unit changes.
Step S20, calculating the total nominal of the indoor unit according to the capacity nominal of the started indoor unit;
when the outdoor unit acquires the starting state of the indoor unit, the capacity nominal of the started indoor unit is obtained, wherein the capacity nominal of the indoor unit refers to the model of the indoor unit and can reflect the refrigerating and heating capacities of the indoor unit. When the capacity rating of the started indoor units is obtained, calculating the rated sum of the started indoor units, and taking the rated sum of the started indoor units as the total rating of the indoor units, for example, the number of the started indoor units is 4, and the rating is respectively: 71. 56, 36, the indoor unit is rated 199 in total.
And step S30, calculating the frequency threshold of the compressor according to the total nominal of the indoor units.
In this embodiment, the frequency threshold of the compressor is solved by the following formula:
Fmax＝K*N+Ft1+Ft2+b
wherein, FmaxIs the frequency threshold of the compressor; n is the total nominal of the indoor unit; ft1Is a first frequency compensation value, Ft2The first frequency compensation value and the second frequency compensation value can be obtained by calculation according to the temperature information; k and b are constants determined by a number of experiments, K may be 0.8 and b may be 8.
Specifically, the first frequency compensation value may be solved according to the following formula:
when the current operation mode of the air conditioner is a cooling mode, Ft1＝k1*(T1-X1) When the current operation mode of the air conditioner is a heating mode, Ft1＝k2*(X2-T1)。
Wherein, Ft1A first frequency compensation value for the compressor; k is a radical of1、k2To compensate for the coefficient, X1、X2Are constants, and are obtained by a large number of experiments; t is1The average value of the ambient temperature of the environment where the started indoor unit is located or the average value of the set temperature of the started indoor unit.
Specifically, the second frequency compensation value may be solved according to the following equation:
when the current operation mode of the air conditioner is a cooling mode, Ft2＝k3＊(T2-X3) When the current operation mode of the air conditioner is a heating mode, Ft2＝k4＊(X4-T2)。
Wherein, Ft2A second frequency compensation value for the compressor; k is a radical of3、k4To compensate for the coefficient, X3、X4Are constants, and are obtained by a large number of experiments; t is2Is the ambient temperature of the environment in which the outdoor unit is located.
In the first embodiment, the started indoor units of the multi-split air conditioner are firstly obtained, the total nominal number of the indoor units is calculated according to the capacity nominal number of the started indoor units, and then the frequency threshold value of the compressor is calculated according to the total nominal number of the indoor units. Therefore, the frequency threshold value of the compressor is calculated according to the starting number of the indoor units of the multi-split air conditioner, so that the problems that the compressor is frequently stopped and started and the like are avoided.
In a second embodiment, as shown in fig. 3, based on the embodiment shown in fig. 2, the step of calculating the frequency threshold of the compressor according to the total nominal of the indoor unit includes:
step S31, obtaining temperature information of the air conditioner, wherein the temperature information comprises at least one of the environment temperature of the started indoor unit, the set temperature of the started indoor unit and the environment temperature of the outdoor unit;
in this embodiment, the outdoor unit learns the power-on state of the indoor unit through communication, and obtains not only the capability rating of the started indoor unit, but also the ambient temperature of the environment where the started indoor unit is located or the set temperature of the started indoor unit, where the ambient temperature of the environment where the indoor unit is located is detected by a temperature sensor on the indoor unit, and the ambient temperature of the environment where the outdoor unit is located is detected by a temperature sensor on the outdoor unit.
In this embodiment, the purpose of obtaining the ambient temperature of the environment where the started indoor unit is located or the set temperature of the started indoor unit is to calculate a first temperature compensation value, since the ambient temperature of the environment where the started indoor unit is located is relatively close to the set temperature of the started indoor unit, the first temperature compensation value can be calculated by using the ambient temperature of the indoor unit or the set temperature of the indoor unit, and if the ambient temperature of the indoor unit and the set temperature of the indoor unit are obtained at the same time, the first temperature compensation value is calculated by using the ambient temperature of the indoor unit; the purpose of acquiring the ambient temperature of the environment in which the outdoor unit is located is to calculate a second temperature compensation value.
It should be noted that the purpose of calculating the first temperature compensation value and the second temperature compensation value is to achieve more accurate control of the air conditioner, and to enlarge the operation range of the air conditioner and maximize the cooling or heating function of the air conditioner without affecting the reliability of the air conditioner.
And step S32, calculating the frequency threshold value of the compressor according to the total nominal value of the indoor unit and the temperature information.
The frequency threshold of the compressor is solved by the following formula:
Fmax＝K*N+Ft1+Ft2+b
wherein, FmaxIs the frequency threshold of the compressor; n is the total nominal of the indoor unit; ft1Is a first frequency compensation value, Ft2Is the second frequency compensation value, the first frequency compensation value andthe second frequency compensation value can be obtained by calculation according to the temperature information; k and b are constants determined by a number of experiments, K may be 0.8 and b may be 8.
In a second embodiment, temperature information of the air conditioner is acquired, and a frequency threshold of the compressor is calculated according to the total nominal value of the indoor unit and the temperature information. Therefore, the air conditioner can be controlled more accurately.
In a third embodiment, as shown in fig. 4, based on the embodiment shown in any one of fig. 2 to 3, the step of calculating the frequency threshold of the compressor according to the total nominal value of the indoor unit and the temperature information includes:
step S321, calculating a first frequency compensation value of the compressor according to the environment temperature of the started indoor unit or the set temperature of the started indoor unit;
in this embodiment, the first frequency compensation value may be solved according to the following formula:
when the current operation mode of the air conditioner is a cooling mode, Ft1＝k1*(T1-X1) When the current operation mode of the air conditioner is a heating mode, Ft1＝k2*(X2-T1)。
Wherein, Ft1A first frequency compensation value for the compressor; k is a radical of1、k2To compensate for the coefficient, X1、X2Are constants, and are obtained by a large number of experiments; t is1The average value of the ambient temperature of the environment where the started indoor unit is located or the average value of the set temperature of the started indoor unit.
For example, in the cooling mode of the air conditioner, the outdoor unit knows that two indoor units are in the on state through communication, the capacities of the two indoor units are respectively 36 and 28, and the indoor units are generally designated as 64; the environmental temperatures of the environments where the indoor units are started are 29 and 31 respectively, and then the average value of the environmental temperatures of the environments where the indoor units are located is 30; k is a radical of1Taking 0.75, X1Take 27, then the first frequency compensation value Ft10.75 ═ 30 to 27 ═ 2 (the calculation results are integers).
Step S322, calculating a second frequency compensation value of the compressor according to the environment temperature of the environment where the outdoor unit is located;
in this embodiment, the second frequency compensation value may be solved according to the following formula:
when the current operation mode of the air conditioner is a cooling mode, Ft2＝k3＊(T2-X3) When the current operation mode of the air conditioner is a heating mode, Ft2＝k4＊(X4-T2)。
Wherein, Ft2A second frequency compensation value for the compressor; k is a radical of3、k4To compensate for the coefficient, X3、X4Are constants, and are obtained by a large number of experiments; t is2Is the ambient temperature of the environment in which the outdoor unit is located.
For example, in the cooling mode of the air conditioner, the ambient temperature of the environment where the outdoor unit is located is 35 k3Taking 0.14, X3Take 35, then the second frequency compensation value Ft20 (integer is taken as calculation result).
Step S323, calculating a frequency threshold of the compressor according to the total nominal value of the indoor unit, the first frequency compensation value, and the second frequency compensation value, or the total nominal value of the indoor unit and the first frequency compensation value, or the total nominal value of the indoor unit and the second frequency compensation value.
In this embodiment, the purpose of calculating the first temperature compensation value and the second temperature compensation value is to achieve more accurate control of the air conditioner, and to enlarge the operation range of the air conditioner and maximize the cooling or heating function of the air conditioner without affecting the reliability of the air conditioner. The frequency threshold of the compressor can thus be calculated using only the first temperature compensation value, or only the second temperature compensation value, or both the first temperature compensation value and the second temperature compensation value.
Specifically, the frequency threshold of the compressor is solved by the following equation:
Fmax＝K*N+Ft1+Ft2+b
wherein, FmaxAs frequency threshold of the compressorA value; n is the total nominal of the indoor unit; ft1Is a first frequency compensation value, Ft2The first frequency compensation value and the second frequency compensation value can be obtained by calculation according to the temperature information; k and b are constants determined by a number of experiments, K may be 0.8 and b may be 8.
For example, the indoor unit is nominally 64, the first frequency compensation value is 2, and the second frequency compensation value is 0, so that the frequency threshold of the compressor is 0.8 × 64+2+0+8 — 61.
In a third embodiment, a first frequency compensation value and a second frequency value of the compressor are calculated, and a frequency threshold of the compressor is calculated according to a total nominal value of the indoor unit, the first frequency compensation value and the second frequency compensation value, or the total nominal value of the indoor unit and the first frequency compensation value, or the total nominal value of the indoor unit and the second frequency compensation value. Therefore, the air conditioner can be controlled more accurately, and the running range of the air conditioner is expanded under the condition that the reliability of the air conditioner is not influenced.
In a fourth embodiment, as shown in fig. 5, based on the embodiments shown in fig. 2 to 4, the step of calculating the first frequency compensation value of the compressor includes:
step S3211, calculating an average value of the environmental temperatures of the started indoor units or an average value of the set temperatures of the started indoor units;
in this embodiment, the ambient temperature of the environment where the indoor unit is located is detected by a temperature sensor on the indoor unit, the outdoor unit obtains the started indoor unit through communication, obtains the ambient temperature of the environment where the started indoor unit is located or the set temperature of the started indoor unit, and then calculates the average value of the ambient temperature of the environment where the started indoor unit is located or the average value of the set temperature of the started indoor unit. It should be noted that the purpose of solving the average value is to calculate the first frequency compensation value of the compressor more accurately.
Step S3212, calculating a first frequency compensation value of the compressor according to the average value of the current operation mode of the air conditioner and the ambient temperature of the environment where the indoor unit is turned on, or the average value of the current operation mode of the air conditioner and the set temperature of the indoor unit turned on.
In this embodiment, the first frequency compensation value may be solved according to the following formula:
when the current operation mode of the air conditioner is a cooling mode, Ft1＝k1*(T1-X1) When the current operation mode of the air conditioner is a heating mode, Ft1＝k2*(X2-T1)。
Wherein, Ft1A first frequency compensation value for the compressor; k is a radical of1、k2To compensate for the coefficient, X1、X2Are constants, and are obtained by a large number of experiments; t is1The average value of the ambient temperature of the environment where the started indoor unit is located or the average value of the set temperature of the started indoor unit.
It should be noted that the purpose of calculating the first temperature compensation value and the second temperature compensation value is to achieve more accurate control of the air conditioner, and to enlarge the operation range of the air conditioner and maximize the cooling or heating function of the air conditioner without affecting the reliability of the air conditioner. The frequency threshold of the compressor can thus be calculated using only the first temperature compensation value, or only the second temperature compensation value, or both the first temperature compensation value and the second temperature compensation value.
In a fourth embodiment, an average value of the ambient temperature of the environment where the started indoor unit is located or an average value of the set temperature of the started indoor unit is calculated, and the first frequency compensation value of the compressor is calculated according to the current operation mode of the air conditioner and the average value of the ambient temperature of the environment where the started indoor unit is located, or the current operation mode of the air conditioner and the average value of the set temperature of the started indoor unit. Therefore, the air conditioner can be controlled more accurately, and the running range of the air conditioner is expanded under the condition that the reliability of the air conditioner is not influenced.
In a fifth embodiment, as shown in fig. 6, based on the embodiment shown in fig. 2 or fig. 5, the step of calculating the second frequency compensation value of the compressor includes:
step S3221, calculating a second frequency compensation value of the compressor according to the current operation mode of the air conditioner and the ambient temperature of the environment where the outdoor unit is located.
In this embodiment, the second frequency compensation value may be solved according to the following formula:
when the current operation mode of the air conditioner is a cooling mode, Ft2＝k3＊(T2-X3) When the current operation mode of the air conditioner is a heating mode, Ft2＝k4＊(X4-T2)。
Wherein, Ft2A second frequency compensation value for the compressor; k is a radical of3、k4To compensate for the coefficient, X3、X4Are constants, and are obtained by a large number of experiments; t is2Is the ambient temperature of the environment in which the outdoor unit is located.
It should be noted that the purpose of calculating the first temperature compensation value and the second temperature compensation value is to achieve more accurate control of the air conditioner, and to enlarge the operation range of the air conditioner and maximize the cooling or heating function of the air conditioner without affecting the reliability of the air conditioner. The frequency threshold of the compressor can thus be calculated using only the first temperature compensation value, or only the second temperature compensation value, or both the first temperature compensation value and the second temperature compensation value.
In the fifth embodiment, the second frequency compensation value of the compressor is calculated according to the current operation mode of the air conditioner and the ambient temperature of the environment where the outdoor unit is located. Therefore, the air conditioner can be controlled more accurately, and the running range of the air conditioner is expanded under the condition that the reliability of the air conditioner is not influenced.
In a sixth embodiment, as shown in fig. 7, based on the embodiment shown in fig. 2 or fig. 6, after the calculating the frequency threshold of the compressor, the method further includes:
step S40, acquiring the running frequency of the compressor at regular time;
and step S50, controlling the compressor to operate at the frequency threshold when the operation frequency is greater than the frequency threshold.
In this embodiment, the operation frequency of the compressor is obtained at regular time, and the operation frequency of the compressor is compared with the frequency threshold. When the operating frequency of the compressor is greater than the frequency threshold, the operating frequency of the compressor exceeds a safety range at the moment, the compressor is damaged, the service life of the air conditioner is shortened, and the reliability of the operation of the air conditioner is influenced, so that the compressor is controlled to operate at the frequency threshold.
In the sixth embodiment, the operation frequency of the compressor is obtained at regular time, and when the operation frequency is greater than the frequency threshold value, the compressor is controlled to operate at the frequency threshold value. Thus, the reliability of the operation of the air conditioner is ensured.
The invention also provides a multi-split air conditioner, which comprises a calculation program of the compressor frequency threshold of the multi-split air conditioner, wherein the calculation program of the compressor frequency threshold of the multi-split air conditioner is configured to realize the steps of the calculation method of the compressor frequency threshold of the multi-split air conditioner under the execution main body of the multi-split air conditioner.
The embodiment of the invention also provides a computer readable storage medium, wherein a program for calculating the compressor frequency threshold of the multi-split air conditioner is stored on the computer readable storage medium, and the program for calculating the compressor frequency threshold of the multi-split air conditioner is executed by a processor to realize the steps of the method for calculating the compressor frequency threshold of the multi-split air conditioner under the execution main body of the multi-split air conditioner.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a television, a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A method for calculating a compressor frequency threshold of a multi-split air conditioner is characterized by comprising the following steps:
acquiring a started indoor unit of the multi-split air conditioner;
calculating the total nominal of the indoor units according to the capacity nominal of the started indoor units;
and calculating a frequency threshold of the compressor according to the total nominal value of the indoor units, wherein the frequency threshold is an upper limit frequency threshold corresponding to the actual running frequency of the compressor when the indoor units are in the current starting number.
2. The method for calculating the frequency threshold of the compressor of the multi-split air conditioner as claimed in claim 1, wherein the step of calculating the frequency threshold of the compressor according to the total nominal of the indoor units comprises:
acquiring temperature information of the air conditioner, wherein the temperature information comprises at least one of the environment temperature of the started indoor unit, the set temperature of the started indoor unit and the environment temperature of the outdoor unit;
and calculating the frequency threshold value of the compressor according to the total nominal value of the indoor unit and the temperature information.
3. The method of claim 2, wherein the calculating of the frequency threshold of the compressor according to the total nominal value of the indoor unit and the temperature information comprises:
calculating a first frequency compensation value of the compressor according to the environment temperature of the started indoor unit or the set temperature of the started indoor unit;
calculating a second frequency compensation value of the compressor according to the environment temperature of the environment where the outdoor unit is located;
and calculating the frequency threshold value of the compressor according to the total nominal value of the indoor unit, the first frequency compensation value and the second frequency compensation value, or the total nominal value of the indoor unit and the first frequency compensation value, or the total nominal value of the indoor unit and the second frequency compensation value.
4. A method for calculating a compressor frequency threshold for a multi-split air conditioner as set forth in claim 3, wherein said step of calculating a first frequency compensation value of said compressor comprises:
calculating the average value of the environmental temperature of the started indoor unit or the average value of the set temperature of the started indoor unit;
and calculating a first frequency compensation value of the compressor according to the average value of the current operation mode of the air conditioner and the environment temperature of the environment where the indoor unit is started or the average value of the current operation mode of the air conditioner and the set temperature of the started indoor unit.
5. A method for calculating a compressor frequency threshold for a multi-split air conditioner as set forth in claim 3, wherein said step of calculating a second frequency compensation value for said compressor comprises:
and calculating a second frequency compensation value of the compressor according to the current operation mode of the air conditioner and the environment temperature of the environment where the outdoor unit is located.
6. The method for calculating the frequency threshold of the compressor of the multi-split air conditioner as claimed in claim 1, further comprising, after calculating the frequency threshold of the compressor:
acquiring the running frequency of the compressor at fixed time;
and when the running frequency is greater than the frequency threshold value, controlling the compressor to run at the frequency threshold value.
7. A multi-split air conditioner comprising a memory, a processor and a program for calculating a compressor frequency threshold of the multi-split air conditioner stored in the memory and operable on the processor, wherein the program for calculating a compressor frequency threshold of the multi-split air conditioner when executed by the processor implements the steps of the method for calculating a compressor frequency threshold of the multi-split air conditioner as claimed in any one of claims 1 to 6.
8. A computer-readable storage medium, wherein the computer-readable storage medium has stored thereon a program for calculating a compressor frequency threshold of a multi-split air conditioner, and when the program for calculating a compressor frequency threshold of a multi-split air conditioner is executed by a processor, the steps of the method for calculating a compressor frequency threshold of a multi-split air conditioner according to any one of claims 1 to 6 are implemented.
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| CN110332682B (en) * | 2019-07-25 | 2021-05-14 | 宁波奥克斯电气股份有限公司 | Method and device for adjusting working frequency of compressor and air conditioner |
| CN113137715A (en) * | 2021-03-16 | 2021-07-20 | 青岛海尔空调电子有限公司 | Control method for compressor frequency of multi-split air conditioner and multi-split air conditioner |
| CN113294894B (en) * | 2021-05-31 | 2022-09-23 | 青岛海信日立空调系统有限公司 | Cloud multi-connected air conditioning unit and control method thereof |
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| CN1851337B (en) * | 2005-04-22 | 2010-05-26 | 海尔集团公司 | Control method for domestic multi-connection air conditioner low temperature heating outdoor unit frequency |
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