WO2022242242A1

WO2022242242A1 - Frequency control method and apparatus for compressor, storage medium, and program product

Info

Publication number: WO2022242242A1
Application number: PCT/CN2022/075532
Authority: WO
Inventors: 张飞; 鞠龙家; 陈建龙; 冯文斌
Original assignee: 青岛海尔空调器有限总公司; 青岛海尔空调电子有限公司; 海尔智家股份有限公司
Priority date: 2021-05-20
Filing date: 2022-02-08
Publication date: 2022-11-24
Also published as: CN113531858A; CN113531858B

Abstract

A frequency control method and apparatus for a compressor, a storage medium, and a program product. The method comprises: obtaining a first startup instruction; according to the first startup instruction, obtaining the temperature information of an indoor unit and the pre-stored frequency information of an original compressor; determining the target frequency of a target compressor according to the temperature information and the frequency information; and controlling the target compressor to run according to the target frequency, the displacement of the target compressor when running according to the target frequency being less than a preset displacement. The frequency control apparatus for the compressor is used for executing the frequency control method. A memory and a processor of an air conditioning device are used for executing the frequency control method for the compressor. A computer readable storage medium is used for storing the frequency control method for the compressor. A computer program product is used for executing the frequency control method for the compressor.

Description

Compressor frequency control method, device, storage medium and program product

This application claims the priority of the Chinese patent application submitted to the China Patent Office on May 20, 2021, with the application number 202110551289.6, and the title of the application is "Frequency Control Method, Device, Storage Medium, and Program Product for Compressors", the entire content of which Incorporated in this application by reference.

technical field

The present application relates to the technical field of frequency control of compressors, and in particular to a method, device, storage medium and program product for frequency control of compressors.

Background technique

Currently, air conditioners include indoor units and outdoor units. Indoor unit and outdoor unit connection. The indoor unit includes the control board and the original compressor. The operating frequency is stored in the control board. When the control board controls the original compressor to work according to the operating frequency, the displacement of the original compressor is less than or equal to the standard displacement, which is in line with the compressor’s displacement. volume requirements.

In the related technology, when the original compressor in the outdoor unit fails, the original compressor is replaced as the target compressor, and the control board controls the target compressor to work according to the operating frequency. In practical applications, compressors produced by different manufacturers usually have different displacements when they work at the same frequency. Therefore, the control board controls the target compressor to work at the operating frequency, which may cause the displacement of the target compressor to be greater than the standard displacement. The volume does not meet the displacement requirements of the compressor.

Contents of the invention

Embodiments of the present application provide a compressor frequency control method, device, storage medium, and program product, which are used to make the displacement of a target compressor less than a preset displacement when operating at a target frequency and meet the displacement requirements of the compressor.

In a first aspect, an embodiment of the present application provides a compressor frequency control method, the method including:

Obtain the first boot instruction;

Acquiring the temperature information of the indoor unit and the pre-stored frequency information of the original compressor according to the first start-up instruction;

Determine the target frequency of the target compressor according to the temperature information and frequency information;

The target compressor is controlled to run according to the target frequency, and the displacement of the target compressor when running according to the target frequency is smaller than the preset displacement.

In a possible design, the frequency information includes the maximum operating frequency and the minimum operating frequency; the temperature information includes the current indoor temperature and the current preset temperature;

Determine the target frequency of the target compressor according to the temperature information and frequency information, including:

Determine the initial frequency according to the current indoor temperature, the current preset temperature and the maximum operating frequency;

If the initial frequency is greater than or equal to the minimum operating frequency, the initial frequency is determined as the target frequency.

In a possible design, the initial frequency is determined according to the current indoor temperature, the current preset temperature and the maximum operating frequency, including:

determining a first difference between the current indoor temperature and the current preset temperature;

According to the first difference, in the corresponding relationship between multiple temperature difference segments and multiple frequency coefficients stored in advance, determine the target frequency coefficient;

Determine the product of the maximum operating frequency and the target frequency coefficient as the initial frequency.

Obtain the first indoor temperature, the first preset temperature, the second indoor temperature and the second preset temperature; the first indoor temperature and the first preset temperature are the temperatures corresponding to the second boot command; the second indoor temperature and the second preset temperature Let the temperature be the temperature corresponding to the third power-on command; the third power-on command, the second power-on command and the first power-on command are the commands obtained in sequence;

Determine the frequency adjustment amount according to the first difference, the first indoor temperature, the first preset temperature, the second indoor temperature, and the second preset temperature;

The sum of the product of the frequency adjustment amount and the preset adjustment gain, and the product of the target frequency coefficient and the maximum operating frequency is determined as the initial frequency.

In a possible design, the frequency adjustment amount is determined according to the first difference, the first indoor temperature, the first preset temperature, the second indoor temperature, and the second preset temperature, including:

respectively determining a second difference between the first indoor temperature and the first preset temperature, and a third difference between the second indoor temperature and the second preset temperature;

The product of the difference between the first difference and the second difference and the preset proportional coefficient is determined as the proportional control amount;

The product of the first difference and the preset integral coefficient is determined as the integral control quantity;

According to the first difference, the second difference, the third difference and the preset differential coefficient, it is determined as the differential control amount;

Determine the sum of proportional control volume, integral control volume and differential control volume as frequency adjustment volume.

In a possible design, according to the first power-on command, the frequency information of the original compressor stored in advance is obtained, including:

According to the first start-up instruction, send operation request information to the outdoor unit; the frequency information of the original compressor is pre-stored in the outdoor unit;

Receive the frequency information sent by the outdoor unit.

In the second aspect, an embodiment of the present application provides a frequency control device for a compressor, which includes: a first acquisition module, a second acquisition module, a determination module, and a control module; wherein,

a first obtaining module, configured to obtain a first boot instruction;

The second obtaining module is used to obtain the temperature information of the indoor unit and the pre-stored frequency information of the original compressor according to the first start-up instruction;

a determining module, configured to determine the target frequency of the target compressor according to temperature information and frequency information;

The control module is used to control the operation of the target compressor at the target frequency, and the displacement of the target compressor at the operation of the target frequency is less than the preset displacement.

In a possible design, the frequency information includes the maximum operating frequency and the minimum operating frequency; the temperature information includes the current indoor temperature and the current preset temperature; the determining module is specifically used for:

In one possible design, it is determined that the module is specifically used to:

In a possible design, the second acquisition module is specifically used for:

Receive the frequency information sent by the outdoor unit.

In a third aspect, an embodiment of the present application provides an air conditioner, including: a processor and a memory;

the memory stores computer-executable instructions;

The processor executes the computer-executed instructions stored in the memory, so that the processor executes the compressor frequency control method according to any one of the first aspect above.

In the fourth aspect, the embodiment of the present application provides a computer-readable storage medium in which computer-executable instructions are stored. When the processor executes the computer-executable instructions, the compressor according to any one of the above first aspects is realized. frequency control method.

In the fifth aspect, the embodiment of the present application provides a computer program product, including a computer program, and when the computer program is executed by a processor, the method for controlling the frequency of a compressor according to any one of the above first aspects is implemented.

Embodiments of the present application provide a compressor frequency control method, device, storage medium, and program product. The method includes: obtaining a first start-up instruction; and obtaining temperature information of an indoor unit and the frequency of the original compressor according to the first start-up instruction information; determine the target frequency of the target compressor according to the temperature information and frequency information; control the target compressor to operate at the target frequency, and the displacement of the target compressor when operating at the target frequency is less than the preset displacement. In the above method, the target frequency of the target compressor is determined according to the temperature information and frequency information, and the displacement of the target compressor when operating at the target frequency is less than the preset displacement, which meets the displacement requirement of the compressor.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description serve to explain the principles of the application.

FIG. 1 is an application scenario diagram 1 of a frequency control method for a compressor provided in an embodiment of the present application;

FIG. 2 is a first schematic flow diagram of a frequency control method for a compressor provided in an embodiment of the present application;

FIG. 3 is a schematic flow diagram II of a frequency control method for a compressor provided in an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a frequency control device for a compressor provided in an embodiment of the present application;

Fig. 5 is a schematic diagram of a hardware structure of an air conditioner provided by an embodiment of the present application.

By means of the above drawings, specific embodiments of the present application have been shown, which will be described in more detail hereinafter. These drawings and text descriptions are not intended to limit the scope of the concept of the application in any way, but to illustrate the concept of the application for those skilled in the art by referring to specific embodiments.

Detailed ways

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numerals in different drawings indicate the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present application as recited in the appended claims.

In the prior art, when the original compressor in the outdoor unit fails, the original compressor is replaced with the target compressor, and the control board controls the original compressor to work according to the operating frequency. Because in practical applications, compressors produced by different manufacturers usually have different displacements when they work at the same frequency. Therefore, the control board controls the target compressor to work according to the operating frequency, which may cause the displacement of the target compressor to be greater than the standard displacement, which does not meet the displacement requirements of the compressor.

In this application, in order to make the displacement of the target compressor less than or equal to the standard displacement and meet the displacement requirements of the compressor, the inventor thought of determining the target frequency of the target compressor after replacing the target compressor, so that the control When the target compressor operates according to the target frequency, the displacement of the target compressor is less than or equal to the standard displacement, which meets the displacement requirement of the compressor.

FIG. 1 is an application scenario diagram 1 of a frequency control method for a compressor provided in an embodiment of the present application. As shown in FIG. 1 , it includes: an indoor unit 10 and an outdoor unit 20 .

The indoor unit 10 includes a first control board 11 .

The outdoor unit 20 includes a second control board 21 and a target compressor 23 . The target compressor 23 is a new compressor reset in the outdoor unit 20 after the original compressor 22 in the outdoor unit 20 fails.

The first control board 11 acquires temperature information of the indoor unit and frequency information of the target compressor, determines the target frequency according to the temperature information and frequency information, and controls the target compressor to operate at the target frequency. Alternatively, the second control board 21 acquires temperature information of the indoor unit and frequency information of the target compressor, determines the target frequency according to the temperature information and frequency information, and controls the target compressor to operate at the target frequency through the first control board 11 . During the process of controlling the target compressor to operate at the target frequency, the displacement of the target compressor is less than the preset displacement, which meets the displacement requirement of the compressor.

The technical solution of the present application and how the technical solution of the present application solves the above technical problems will be described in detail below with specific embodiments. The following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

FIG. 2 is a first schematic flowchart of a frequency control method for a compressor provided in an embodiment of the present application. As shown in Figure 2, the method includes:

S201. Obtain a first boot instruction.

It should be noted that the air conditioner, or the frequency control device provided in the air conditioner) is used to implement the frequency control method for the compressor. The air conditioner may be an indoor unit or an outdoor unit. The frequency control device can be implemented by a combination of software and/or hardware. When the air conditioner is an indoor unit, the hardware includes but not limited to the first control board. When the air conditioner is an outdoor unit, the hardware includes but not limited to the second control board.

The first power-on command is a power-on command sent by the remote control device to the indoor unit after the user performs a power-on operation on the remote control device. The remote control device may be a remote control, a smart phone, a tablet computer, and the like.

When the air conditioner is an outdoor unit, after receiving the first start-up instruction, the indoor unit forwards the first start-up instruction to the outdoor unit, so that the outdoor unit obtains the first start-up instruction.

S202. Acquire temperature information of the indoor unit and pre-stored frequency information of the original compressor according to the first start-up instruction.

Temperature information is stored in the indoor unit. The temperature information includes at least: the current indoor temperature and the current preset temperature. The current indoor temperature is the temperature collected by the temperature sensor provided in the indoor unit after the indoor unit receives the first start-up instruction. The current preset temperature is the temperature set by the user and stored in the indoor unit, and the absolute value of the difference between the storage time of the current preset temperature and the time when the first power-on command is obtained is the smallest.

When the air conditioner is an outdoor unit, obtaining temperature information of the indoor unit according to the first start-up instruction includes: obtaining the temperature information of the outdoor unit from the indoor unit according to the first start-up instruction.

The frequency information of the original compressor can be pre-stored in the outdoor unit or in the indoor unit. The frequency information at least includes: a maximum operating frequency and a minimum operating frequency. During the operation of the original compressor at the maximum operating frequency or the minimum operating frequency, the displacement of the original compressor is less than the preset displacement.

Exemplarily, the frequency information of the original compressor is pre-stored in the outdoor unit. When the air conditioner is an indoor unit, the pre-stored frequency information of the original compressor is obtained according to the first start-up instruction, including: according to the first start-up instruction, the indoor The machine obtains the frequency information of the original compressor stored in the outdoor unit in advance from the outdoor unit.

S203. Determine the target frequency of the target compressor according to the temperature information and the frequency information.

Optionally, the target frequency of the target compressor can be determined in the following two ways (way 101 and way 102).

Way 101: Determine the target frequency of the target compressor according to the current indoor temperature, the current preset temperature and the maximum operating frequency.

Way 102, determine the initial frequency according to the current indoor temperature, the current preset temperature and the maximum operating frequency;

If the initial frequency is greater than or equal to the minimum operating frequency, the initial frequency is determined as the target frequency of the target compressor.

It should be noted that, the method of determining the target frequency in manner 101 is the same as that of determining the initial frequency in manner 102, please refer to S305 in the embodiment of FIG. 3 , which will not be described in detail here.

S204. Control the target compressor to run according to the target frequency, and the displacement of the target compressor when running according to the target frequency is smaller than the preset displacement.

When the air conditioner is an indoor unit, the indoor unit sends the target frequency of the target compressor to the outdoor unit, so that the outdoor unit controls the target compressor to operate at the target frequency.

Exemplarily, the preset displacement (in milliliters of compressed gas per revolution) may be any number between 7.2 and 30.

In the frequency control method of the compressor shown in the embodiment of Figure 2, the target frequency of the target compressor is determined with reference to the temperature information, so that the displacement of the target compressor is less than the preset displacement when the target compressor is controlled to operate at the target frequency, which meets the compression engine displacement requirements.

In practical applications, the versions of compressors produced by different manufacturers are different, and the displacements of compressors of different versions are usually different when they work at the same frequency. In this application, the target frequency of the target compressor is determined according to the temperature information and frequency information, and the target frequency of different versions of the target compressor can be quickly determined, so that the target frequency of different versions of the target compressor can be adaptively adjusted.

On the basis of the above embodiments, the method for controlling the frequency of the compressor provided by the embodiments of the present application will be further described in detail below with reference to FIG. 3 , taking the air conditioner as an indoor unit as an example.

FIG. 3 is a second schematic flow diagram of a frequency control method for a compressor provided in an embodiment of the present application. As shown in Figure 3, the method includes:

S301. The indoor unit acquires a first power-on instruction.

S302. The indoor unit acquires temperature information and pre-stored frequency information of the original compressor according to the first start-up instruction; the frequency information includes the maximum operating frequency and the minimum operating frequency; the temperature information includes the current indoor temperature and the current preset temperature.

The current indoor temperature is usually stored in the first preset memory location. The current preset temperature is usually stored in the second preset storage location.

The indoor unit obtains the current indoor temperature from the first pre-storage location, and obtains the current preset temperature from the second preset storage location, so as to obtain temperature information.

In a possible design, the frequency information of the original compressor is pre-stored in the indoor unit. The maximum operating frequency is typically stored in the seventh preset memory location, and the minimum operating frequency is typically stored in the eighth preset memory location. The indoor unit acquires the maximum operating frequency from the seventh pre-store, and acquires the minimum operating frequency from the eighth pre-store, so as to obtain frequency information.

In another possible design, the frequency information of the original compressor is pre-stored in the outdoor unit. The indoor unit sends operation request information to the outdoor unit according to the first start-up instruction; receives the frequency information sent by the outdoor unit, so that the indoor unit acquires frequency information.

When the frequency information of the original compressor is pre-stored in the outdoor unit, the outdoor unit combines the maximum operating frequency and the minimum operating frequency to obtain the frequency information and store the frequency information; Send frequency information. The indoor unit can obtain frequency information through the following two methods (method 111 and method 112).

Mode 111, the indoor unit and the outdoor unit pre-agreed on the data bits (for example, N) of the frequency information, and agreed to store the maximum frequency information on the data bits 1 to M, and store the minimum operating frequency on the data bits M+1 to N, thus obtaining frequency information. Wherein, M is a positive integer greater than 1 and less than N.

Mode 112, the indoor unit and the outdoor unit pre-agreed to store the maximum frequency information in the data bits between the first identifier and the second identifier, and store the minimum operating frequency in the data bits after the second identifier, so as to obtain the frequency information.

S303. The indoor unit determines an initial frequency according to the current indoor temperature, the current preset temperature and the maximum operating frequency.

The indoor unit obtains the maximum operating frequency from the frequency information, and determines the initial frequency according to the current indoor temperature, the current preset temperature and the maximum operating frequency.

In a possible design, the indoor unit obtains the maximum operating frequency from the frequency information through the following two methods (method 121 and method 122).

Way 121, on the basis of the above-mentioned way 111, after receiving the frequency information, the indoor unit obtains the maximum operating frequency from the data of the frequency information ranging from 1 to M.

Mode 122, on the basis of the above mode 112, after the indoor unit detects the first and second marks in the frequency information, it obtains the maximum operating frequency from the data bits between the first mark and the second mark in the frequency information .

The indoor unit determines the initial frequency through the following two methods (mode 131 and mode 132).

Way 131, determining the first difference between the current indoor temperature and the current preset temperature;

Specifically, the first difference may be determined by the following formula 1:

P _n =T' _n -T" _n Formula 1;

Wherein, P _n is the first difference, T′ _n is the current indoor temperature, and T″ _n is the current preset temperature.

Specifically, the initial frequency can be determined by the following formula 2:

F _n =fmax*A Formula 2;

in,

is the initial frequency, fmax is the maximum operating frequency, and A is the target frequency coefficient.

Optionally, the above corresponding relationship may have a form as shown in Table 1 below.

Table 1

温差段temperature range	频率系数frequency coefficient
[T0，T1)[T0, T1)	A0A0
[T1，T2)[T1, T2)	A1A1
……...	……...

The target frequency coefficient can be determined by the following methods: determining the target temperature difference segment where the first difference is located in the corresponding relationship; determining the frequency coefficient corresponding to the target temperature difference segment in the corresponding relationship as the target frequency coefficient. Exemplarily, if the target temperature difference segment where the first difference is located is [T1, T2), the target frequency coefficient is A1.

Way 132, determining the first difference between the current indoor temperature and the current preset temperature;

According to the first difference, in the corresponding relationship between a plurality of temperature difference sections and a plurality of frequency coefficients stored in advance, determine the target frequency coefficient;

Obtaining the first indoor temperature, the first preset temperature, the second indoor temperature and the second preset temperature;

The method for determining the target frequency coefficient in manner 131 and manner 132 is the same, and will not be repeated here.

Wherein, the first indoor temperature and the first preset temperature are temperatures corresponding to the second power-on instruction. The first indoor temperature is the temperature collected by the temperature sensor after the second power-on instruction is acquired. The first preset temperature is the temperature set by the user and stored in the indoor unit, and the absolute value of the difference between the storage time of the first preset temperature and the time when the second power-on command is obtained is the smallest.

Wherein, the second indoor temperature and the second preset temperature are temperatures corresponding to the third power-on command. The second indoor temperature is the temperature collected by the temperature sensor after the second power-on instruction is acquired. The second preset temperature is the temperature set by the user and stored in the indoor unit, and the absolute value of the difference between the storage time of the second preset temperature and the time when the third power-on command is obtained is the smallest.

Wherein, the third boot command, the second boot command and the first boot command are commands acquired in sequence.

It should be noted that after the original compressor is replaced with the target compressor, if the first start-up command is obtained for the first time, the third start-up command and the second start-up command are the start-up commands obtained when the original compressor is normal.

The first indoor temperature, the first preset temperature, the second indoor temperature and the second preset temperature are included in the temperature information, or not included in the temperature information.

When the first indoor temperature, the first preset temperature, the second indoor temperature and the second preset temperature are included in the temperature information, the first indoor temperature, the first preset temperature, the second indoor temperature and the temperature information are obtained from the temperature information Second preset temperature.

The method of obtaining the first indoor temperature, the first preset temperature, the second indoor temperature and the second preset temperature from the temperature information is similar to the method of obtaining the maximum operating frequency from the frequency information, and will not be repeated here.

When the first indoor temperature, the first preset temperature, the second indoor temperature and the second preset temperature are not included in the temperature information, the first indoor temperature is usually stored in the third preset storage location of the indoor unit, and the first preset The preset temperature is usually stored in the fourth preset storage location of the indoor unit, the second indoor temperature is stored in the fifth preset storage location of the indoor unit, and the second preset temperature is stored in the sixth preset storage location of the indoor unit, which can be accessed from the first Acquire the first indoor temperature from three preset storage locations, acquire the first preset temperature from the fourth preset storage location, acquire the second indoor temperature from the fifth preset storage location, and acquire the second preset temperature from the sixth preset storage location temperature.

Specifically, the second difference may be determined by the following formula 3:

P _n-1 = T′ _n-1 -T″ _n-1 Formula 3;

Wherein, P _n-1 is the second difference, T′ _n-1 is the first indoor temperature, and T″ _n-1 is the first preset temperature.

Specifically, the second difference may be determined by the following formula 4:

P _n-2 = T′ _n-2 -T″ _n-2 Formula 4;

Wherein, P _n-2 is the third difference, T′ _n-2 is the second indoor temperature, and T″ _n-2 is the second preset temperature.

Specifically, the proportional control amount can be determined by the following formula 5:

Hzkp=Kp*( _Pn - _Pn-1 ) Formula 5;

Among them, Hzkp is the proportional control quantity, and Kp is the preset proportional coefficient.

Specifically, the integral control amount can be determined by the following formula 6:

Hzki=Ki*P _n formula 6;

Among them, Hzki is the integral control quantity, and Ki is the preset integral coefficient.

Specifically, the differential control amount can be determined by the following formula 7:

Hzkd=Kd*((P _n -P _n-1 )-(P _n-1 -P _n-2 )) Formula 7;

Among them, Hzkd is the differential control quantity, and Kd is the preset differential coefficient.

Specifically, the frequency adjustment amount can be determined by the following formula 8:

ΔF _n =Hzkp+Hzki+Hzkd Formula 8;

Among them, ΔF _n is the frequency adjustment amount.

Specifically, the initial frequency can be determined by the following formula 9:

F _n = fmax*A+Out_gain*ΔF _n Formula 9;

Among them, F _n is the initial frequency, fmax is the maximum operating frequency, A is the target frequency coefficient, and Out_gain is the preset adjustment gain.

S304. The indoor unit judges whether the initial frequency is greater than or equal to the minimum operating frequency.

In a possible design, the indoor unit obtains the minimum operating frequency from the eighth preset storage location, and judges whether the initial frequency is greater than or equal to the minimum operating frequency

In another possible design, the indoor unit obtains the minimum operating frequency from frequency information through the following two methods (including method 141 and method 142). Further, it is judged whether the initial frequency is greater than or equal to the minimum operating frequency.

Mode 141, on the basis of the above mode 111, the indoor unit obtains the minimum operating frequency from the data bits M+1 to N in the frequency information.

Mode 142, on the basis of the foregoing mode 112, the indoor unit acquires the minimum operating frequency from the data bits after the second identifier in the frequency information.

S305. The indoor unit determines that the initial frequency is greater than or equal to the minimum operating frequency, and determines the initial frequency as the target frequency.

S306. The indoor unit sends the target frequency to the target frequency.

S307. The outdoor unit controls the target compressor to run at the target frequency, and the displacement of the target compressor when running at the target frequency is smaller than the preset displacement.

The frequency control method of the compressor provided by the embodiment in Fig. 3 includes: the indoor unit refers to the temperature information to determine the target frequency, and the outdoor unit controls the target compressor to operate at the target frequency, so that the displacement of the target compressor is less than the preset displacement, which meets the Arrangement requirements for compressors.

Moreover, it is different from the prior art. In the prior art, the target compressor is controlled by the outdoor unit to work according to the operating frequency, that is, the frequency control of the compressor is only performed in the outdoor unit. Since the frequency control of the outdoor unit has its own defects, For example, indoor information cannot be collected, so when the frequency control of the outdoor unit is performed, the user's demand for cooling capacity may not be met, resulting in poor user experience. In this application, the indoor unit determines the target frequency according to the indoor information (temperature information), and controls the target compressor to run at the target frequency through the outdoor unit, which can avoid the defect of frequency control only through the outdoor unit and meet the user's demand for cooling capacity. demand and improve user experience.

In this application, if the connection line between the outdoor unit and the indoor unit is long, if the frequency control is performed through the outdoor unit, the indoor unit needs to send temperature information to the outdoor unit, so that the outdoor unit can determine the target frequency and control the target frequency. The compressor runs at the target frequency. Due to the long connection cable, after the outdoor unit determines the target frequency according to the temperature information, the temperature information may have changed, which means that the timeliness of determining the target frequency based on the temperature information is poor, and the target frequency is not correct. precise. In the case of a long connecting cable between the outdoor unit and the indoor unit, if the frequency control is performed through the indoor unit, the indoor unit can directly determine the target frequency according to the temperature information and pre-stored frequency information, that is, after the target frequency is determined, the temperature information is basically Without changes, the timeliness of determining the target frequency according to the temperature information can be improved, thereby improving the accuracy of the target frequency.

Fig. 4 is a schematic structural diagram of a frequency control device for a compressor provided in this embodiment. As shown in Figure 4, the frequency control device 40 of the compressor includes: a first acquisition module 41, a second acquisition module 42, a determination module 43 and a control module 44; wherein,

The first obtaining module 41 is used to obtain the first boot instruction;

The second obtaining module 42 is used to obtain the temperature information of the indoor unit and the pre-stored frequency information of the original compressor according to the first start-up instruction;

A determination module 43, configured to determine the target frequency of the target compressor according to the temperature information and frequency information;

The control module 44 is configured to control the target compressor to operate at a target frequency, and the displacement of the target compressor to operate at the target frequency is less than a preset displacement.

The frequency control device for a compressor provided in the embodiment of the present application can implement the technical solutions shown in the above method embodiments, and its implementation principles and beneficial effects are similar, and will not be repeated here.

In a possible design, the frequency information includes the maximum operating frequency and the minimum operating frequency; the temperature information includes the current indoor temperature and the current preset temperature; the determining module 43 is specifically used for:

In a possible design, the determining module 43 is specifically used for:

In a possible design, the second acquiring module 42 is specifically used for:

Receive the frequency information sent by the outdoor unit.

Fig. 5 is a schematic diagram of a hardware structure of an air conditioner provided by an embodiment of the present application. As shown in FIG. 5 , the air conditioner 50 includes: a transceiver 51 , a memory 52 , and a processor 53 , and the transceiver 51 may include: a transmitter and/or a receiver. The transmitter may also be called a transmitter, a transmitter, a sending port, or a sending interface, and similar descriptions, and the receiver may also be called a receiver, a receiver, a receiving port, or a receiving interface, or similar descriptions. The transceiver 51 is used for receiving data sent by other devices or sending data to other devices.

Exemplarily, each part of the transceiver 51 , the memory 52 , and the processor 53 is connected to each other through a bus 54 .

Memory 52 is used to store computer-executable instructions.

The processor 53 is configured to execute the computer-executed instructions stored in the memory 52, so that the processor 53 executes the compressor frequency control method shown in any method embodiment above. For the specific implementation process of the processor 53, reference may be made to the above-mentioned method embodiments, and the implementation principles and technical effects thereof are similar, and details are not repeated here in this embodiment.

In the above embodiment shown in FIG. 5, it should be understood that the processor can be a central processing unit (Central Processing Unit, CPU), and can also be other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), dedicated Integrated Circuit (Application Specific Integrated Circuit, ASIC), etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like. The steps of the method disclosed in conjunction with the application can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor.

Memory may include high-speed RAM memory, and may also include non-volatile storage NVM, such as disk memory.

The bus can be an Industry Standard Architecture (Industry Standard Architecture, ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (Extended Industry Standard Architecture, EISA) bus, etc. The bus can be divided into address bus, data bus, control bus and so on. For ease of representation, the buses in the drawings of the present application are not limited to only one bus or one type of bus.

The present application also provides a computer-readable storage medium, wherein computer-executable instructions are stored in the computer-readable storage medium, and when the processor executes the computer-executable instructions, the above compressor frequency control method is implemented.

The present application also provides a computer program product, including a computer program, and when the computer program is executed by a processor, the frequency control method of the compressor as above is implemented.

All or part of the steps for implementing the above method embodiments can be completed by program instructions and related hardware. The aforementioned program can be stored in a readable memory. When the program is executed, it executes the steps comprising the above-mentioned method embodiments; and the aforementioned memory (storage medium) includes: read-only memory (read-only memory, ROM), RAM, flash memory, hard disk, solid-state hard disk, magnetic tape (magnetic tape), floppy disk (floppy disk), optical disc (optical disc) and any combination thereof.

Embodiments of the present application are described with reference to flowcharts and/or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processing unit of other programmable data processing equipment to produce a machine such that the instructions executed by the processing unit of the computer or other programmable data processing equipment produce a An apparatus for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart or blocks of the flowchart and/or the block or blocks of the block diagrams.

Apparently, those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the present application. In this way, if the modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and equivalent technologies, the present application also intends to include these modifications and variations.

In this application, the term "include" and its variants may mean non-limiting inclusion; the term "or" and its variants may mean "and/or". The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. In the present application, "plurality" means two or more. "And/or" describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B may indicate: A exists alone, A and B exist simultaneously, and B exists independently. The character "/" generally indicates that the contextual objects are an "or" relationship.

Claims

A frequency control method for a compressor, characterized in that the method comprises:

Obtain the first boot instruction;

Acquire temperature information of the indoor unit and pre-stored frequency information of the original compressor according to the first start-up instruction;

determining the target frequency of the target compressor according to the temperature information and the frequency information;

The target compressor is controlled to run according to the target frequency, and the displacement of the target compressor when running according to the target frequency is less than a preset displacement.
The method according to claim 1, wherein the frequency information includes a maximum operating frequency and a minimum operating frequency; the temperature information includes a current indoor temperature and a current preset temperature;

The determining the target frequency of the target compressor according to the temperature information and the frequency information includes:

determining an initial frequency according to the current indoor temperature, the current preset temperature and the maximum operating frequency;

If the initial frequency is greater than or equal to the minimum operating frequency, then determine the initial frequency as the target frequency.
The method according to claim 2, wherein the determining an initial frequency according to the current indoor temperature, the current preset temperature and the maximum operating frequency includes:

determining a first difference between the current indoor temperature and the current preset temperature;

According to the first difference, in the corresponding relationship between a plurality of temperature difference segments and a plurality of frequency coefficients stored in advance, determine a target frequency coefficient;

The product of the maximum operating frequency and the target frequency coefficient is determined as the initial frequency.
The method according to claim 2, wherein the determining an initial frequency according to the current indoor temperature, the current preset temperature and the maximum operating frequency includes:

determining a first difference between the current indoor temperature and the current preset temperature;

According to the first difference, in the corresponding relationship between a plurality of temperature difference segments and a plurality of frequency coefficients stored in advance, determine a target frequency coefficient;

Obtain the first indoor temperature, the first preset temperature, the second indoor temperature and the second preset temperature; the first indoor temperature and the first preset temperature are the temperatures corresponding to the second power-on command; the second The indoor temperature and the second preset temperature are the temperatures corresponding to the third boot command; the third boot command, the second boot command and the first boot command are commands obtained in sequence;

determining a frequency adjustment amount according to the first difference, the first indoor temperature, the first preset temperature, the second indoor temperature, and the second preset temperature;

A sum of a product of the frequency adjustment amount and a preset adjustment gain and a product of the target frequency coefficient and the maximum operating frequency is determined as the initial frequency.
The method according to claim 4, characterized in that, according to the first difference, the first indoor temperature, the first preset temperature, the second indoor temperature, the second preset Set the temperature and determine the frequency adjustment amount, including:

respectively determining a second difference between the first indoor temperature and the first preset temperature, and a third difference between the second indoor temperature and the second preset temperature;

determining the product of the difference between the first difference and the second difference and a preset proportional coefficient as the proportional control amount;

The product of the first difference and the preset integral coefficient is determined as the integral control quantity;

Determine the differential control amount according to the first difference, the second difference, the third difference and a preset differential coefficient;

The sum of the proportional control amount, the integral control amount, and the differential control amount is determined as the frequency adjustment amount.
The method according to any one of claims 1-5, characterized in that, according to the first boot instruction, obtaining pre-stored frequency information of the original compressor includes:

According to the first start-up instruction, send operation request information to the outdoor unit; the frequency information of the original compressor is pre-stored in the outdoor unit;

The frequency information sent by the outdoor unit is received.
A compressor frequency control device, characterized in that the device includes: a first acquisition module, a second acquisition module, a determination module, and a control module; wherein,

The first acquiring module is configured to acquire a first boot instruction;

The second acquisition module is configured to acquire the temperature information of the indoor unit and the pre-stored frequency information of the original compressor according to the first boot instruction;

The determination module is configured to determine the target frequency of the target compressor according to the temperature information and the frequency information;

The control module is configured to control the target compressor to operate at the target frequency, and the displacement of the target compressor to operate at the target frequency is less than a preset displacement.
An air conditioner, characterized in that it includes: a processor and a memory;

the memory stores computer-executable instructions;

The processor executes the computer-executed instructions stored in the memory, so that the processor executes the compressor frequency control method according to any one of claims 1-6.
A computer-readable storage medium, characterized in that the computer-readable storage medium stores computer-executable instructions, and when the processor executes the computer-executable instructions, the method described in any one of claims 1-6 is realized. Compressor frequency control method.
A computer program product, characterized by comprising a computer program, when the computer program is executed by a processor, the frequency control method for a compressor according to any one of claims 1 to 6 is implemented.