CN116026069A

CN116026069A - Electronic expansion valve control method, device, equipment and storage medium

Info

Publication number: CN116026069A
Application number: CN202211534719.4A
Authority: CN
Inventors: 刘其元; 段洋; 裴亚晨; 张文卿
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-04-28

Abstract

The embodiment of the invention relates to a control method, a device, equipment and a storage medium of an electronic expansion valve, wherein the method comprises the following steps: acquiring operation parameters of a frequency conversion module of the equipment; acquiring the ambient temperature around the frequency conversion module; determining the target opening of the electronic expansion valve corresponding to the operation parameter and/or the environmental temperature from an association relation, wherein the association relation stores the correspondence relation among a plurality of groups of operation parameters, the environmental temperature and the target opening of the electronic expansion valve; and adjusting the actual opening of the electronic expansion valve according to the target opening. Therefore, the opening size of the electronic expansion valve can be prevented from being frequently regulated, the service life of the electronic expansion valve is prolonged, a buffer cavity is not required to be additionally arranged on a radiator, the electronic expansion valve is used for controlling a refrigerant to take away heat of the module by using less refrigerant when the ambient temperature is high, and the purpose of cooling the module is achieved.

Description

Electronic expansion valve control method, device, equipment and storage medium

Technical Field

The embodiment of the invention relates to the technical field of air conditioning equipment, in particular to a control method, a device, equipment and a storage medium of an electronic expansion valve.

Background

Compared with fixed-frequency air conditioners, the variable-frequency air conditioner has the characteristics of accurate temperature control, rapid temperature adjustment, low noise and energy conservation. The frequency conversion air conditioner internally mounted has the converter, and the converter calorific capacity is very big, consequently need design the radiator and dispel the heat it. The frequency conversion module in the frequency converter plays a role in power conversion and amplification in the whole frequency converter, and the switching loss and the resistance of the frequency conversion module can generate a large amount of heat in the working process, if the heat is not timely dissipated, the performance of the frequency conversion module can be seriously influenced, and even the frequency conversion module is burnt.

At present, the radiator is used for radiating heat of a power device in the frequency converter, the cooling mode of the radiator is air cooling, water cooling and refrigerant cooling, and the refrigerant and the radiating heat can be adjusted through the electronic expansion valve. The invention solves the problem that the electronic expansion valve needs to frequently adjust the opening size in the heat dissipation process, so that the service life of the electronic expansion valve is generally short.

Disclosure of Invention

In view of the above, in order to solve the above-mentioned technical problem of service life of the electronic expansion valve, embodiments of the present invention provide a method, a device, an apparatus, and a storage medium for controlling the electronic expansion valve,

In a first aspect, an embodiment of the present invention provides a method for controlling an electronic expansion valve, including:

acquiring operation parameters of a frequency conversion module in equipment;

acquiring the ambient temperature around the frequency conversion module;

determining target opening degrees of the electronic expansion valves of the equipment corresponding to the operation parameters and/or the environment temperature from an association relation, wherein the association relation stores the correspondence relation among a plurality of groups of operation parameters, the environment temperature and the target opening degrees of the electronic expansion valves;

and adjusting the actual opening of the electronic expansion valve according to the target opening.

In one possible embodiment, the obtaining the operation parameters of the frequency conversion module in the device includes:

acquiring the current bus voltage of the frequency conversion module in the operation process of the frequency conversion module;

acquiring the current working frequency of the frequency conversion module;

and determining the bus voltage and the working frequency as the operation parameters.

In one possible embodiment, before the obtaining the operation parameters of the frequency conversion module in the device, the method further includes:

obtaining a plurality of groups of historical operation parameters of the frequency conversion module to obtain a historical operation parameter set, wherein the historical operation parameters comprise: historical operating frequency and historical bus voltage;

controlling the frequency conversion module to operate according to any historical bus voltage and any historical operating frequency respectively;

determining heating power corresponding to the frequency conversion module when the frequency conversion module operates according to each group of historical operating parameters;

and determining the heat dissipation capacity of each heating power in a preset time period to obtain a heat dissipation capacity set.

acquiring a plurality of historical environment temperatures to obtain a historical environment temperature set;

when the frequency conversion module operates with any one set of historical operating parameters at any one of the historical ambient temperatures, the historical opening of the electronic expansion valve is adjusted so as to adjust the flow of the refrigerant in the radiator through the electronic expansion valve, and the radiator is arranged adjacent to the frequency conversion module;

and acquiring the heat absorption quantity of the refrigerant in the preset time period aiming at each historical opening degree to obtain a heat absorption quantity set.

In one possible embodiment, the correspondence is generated by:

judging whether the heat absorption capacity is matched with the heat dissipation capacity or not in the process of adjusting the historical opening of the electronic expansion valve each time;

when the matching is determined, generating a corresponding relation among the current historical opening, the historical operating parameters and the historical environment temperature;

and determining a plurality of corresponding relations among the historical environment temperature set, the historical operation parameter set and the corresponding historical opening degree set according to the heat dissipation amount set and the heat absorption amount set, and generating the association relation according to the corresponding relations.

In one possible embodiment, the method further comprises:

when equipment corresponding to the electronic expansion valve receives a first operation, determining a predicted environment temperature and a predicted operation parameter according to the first operation;

determining the predicted opening corresponding to the predicted environmental temperature and the predicted operation parameter;

determining a predicted cooling capacity according to the predicted operating parameter;

and when the predicted heat dissipation amount is larger than a first set threshold value, adjusting the current opening degree of the electronic expansion valve to be the predicted opening degree.

In one possible embodiment, the method further comprises:

acquiring time information of equipment prediction closing corresponding to the electronic expansion valve;

and when the time information is smaller than a second set threshold value and the current heat dissipation capacity is smaller than a third set threshold value, controlling the radiator to be closed.

In a second aspect, an embodiment of the present invention provides an electronic expansion valve control device, including:

the acquisition module is used for acquiring the operation parameters of the frequency conversion module in the equipment;

the acquisition module is also used for acquiring the ambient temperature around the frequency conversion module;

the determining module is used for determining the target opening of the electronic expansion valve of the equipment corresponding to the operation parameter and/or the environment temperature from an association relation, wherein the association relation stores the correspondence relation among a plurality of groups of operation parameters, the environment temperature and the target opening of the electronic expansion valve;

and the adjusting module is used for adjusting the actual opening of the electronic expansion valve according to the target opening.

In a third aspect, an embodiment of the present invention provides an apparatus, including: a processor and a memory, the processor being configured to execute an electronic expansion valve control program stored in the memory, to implement the electronic expansion valve control method according to any one of the above first aspects.

In a fourth aspect, an embodiment of the present invention provides a storage medium storing one or more programs executable by one or more processors to implement the electronic expansion valve control method according to any one of the first aspects.

According to the electronic expansion valve control scheme provided by the embodiment of the invention, the operation parameters of the frequency conversion module in the equipment are obtained; acquiring the ambient temperature around the frequency conversion module; determining target opening degrees of the electronic expansion valves corresponding to the operation parameters and the environment temperature from an association relation, wherein the association relation stores the correspondence relation among a plurality of groups of operation parameters, the environment temperature and the target opening degrees of the electronic expansion valves; and adjusting the actual opening of the electronic expansion valve according to the target opening. Therefore, the opening size of the electronic expansion valve can be prevented from being frequently regulated, the service life of the electronic expansion valve is prolonged, a buffer cavity is not required to be additionally arranged on a radiator, the electronic expansion valve is used for controlling a refrigerant to take away heat of the module by using less refrigerant when the ambient temperature is high, and the purpose of cooling the module is achieved.

Drawings

FIG. 1 is a schematic flow chart of a control method of an electronic expansion valve according to an embodiment of the present invention;

fig. 2 is a flow chart of a method for generating an association relationship according to an embodiment of the present invention;

FIG. 3 is a schematic flow chart of another control method of an electronic expansion valve according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of an electronic expansion valve control device according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of an apparatus according to an embodiment of the present invention.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

For the purpose of facilitating an understanding of the embodiments of the present invention, reference will now be made to the following description of specific embodiments, taken in conjunction with the accompanying drawings, which are not intended to limit the embodiments of the invention.

Fig. 1 is a schematic flow chart of a control method of an electronic expansion valve according to an embodiment of the present invention, as shown in fig. 1, where the method specifically includes:

s11, acquiring operation parameters of a frequency conversion module of the equipment.

The electronic expansion valve control method provided by the embodiment of the invention is applied to intelligent air conditioning equipment, and the equipment can be as follows: the variable frequency air conditioner specifically determines a target opening degree of the electronic expansion engine according to the current ambient temperature, the bus voltage and the working frequency, and adjusts the electronic expansion valve.

In this embodiment, including modules such as converter, radiator, condenser, electronic expansion valve, converter drive plate, gas-liquid separator in the intelligent air conditioning equipment, wherein the radiator is hugged closely and is installed at the converter back, installs the copper pipe in the radiator, and copper pipe inlet links to each other with the condenser main loop, is provided with electronic expansion valve between inlet and the condenser main loop, and electronic expansion valve aperture is controlled by the converter drive plate, and copper pipe liquid outlet links to each other with gas-liquid separator in the radiator.

Further, the frequency conversion module in this embodiment includes converter and converter drive plate, and the converter drive plate can control electronic expansion valve and adjust the aperture, and the radiator can dispel the heat to the converter, and electronic expansion valve is used for controlling the refrigerant flow between radiator and the condenser, and every electronic expansion valve corresponds a radiator, corresponds a frequency conversion module. The operating parameters include: bus voltage V and frequency F when the frequency converter is in operation.

The specific bus voltage and frequency acquiring method is not specifically limited in this embodiment, and for example, the bus voltage and power may be detected by a detection function and a bus voltage detecting circuit provided on the inverter driving board.

S12, acquiring the ambient temperature around the frequency conversion module.

In this embodiment, the method for acquiring the ambient temperature may include, but is not limited to, acquiring the temperature of the surrounding environment of the frequency conversion module by the temperature detection device such as the temperature sensor, acquiring the value T of the current ambient temperature by the frequency converter driving board through the ambient temperature sensing bulb, and the like, and the method for specifically acquiring the ambient temperature is not limited in this embodiment.

S13, determining the target opening of the electronic expansion valve of the equipment corresponding to the operation parameters and/or the environment temperature from an association relation, wherein the association relation stores the correspondence relation among a plurality of groups of operation parameters, the environment temperature and the target opening of the electronic expansion valve.

In the embodiment of the present invention, determining, from the association relationship, the target opening of the electronic expansion valve of the device corresponding to the operating parameter and the ambient temperature includes: the first association relation is generated in advance, the first association relation can be an AD table which stores target opening degrees of the electronic expansion valves corresponding to the operation parameters and the environment temperature, the corresponding relation between the operation parameters, the environment temperature and the target opening degrees can be represented, and each group of operation parameters and the environment temperature correspond to one target opening degree. The form of presentation of the association relationship may be in the form of a table, a node map, or the like, and the present embodiment is not particularly limited thereto.

In an example, when the operation parameters include F and V, the first association relationship may include the following two AD tables:

further, according to the obtained T, F and V, the current T can be queried from the association relation, a corresponding target AD table is determined according to the T, and the target opening degrees of the electronic expansion valves corresponding to the current F and V are determined in the target AD table.

For example, T is 25, V is 543, and F is 60, and the corresponding target opening degree is 374 from the association relationship.

In one possible implementation manner, determining the target opening degree of the electronic expansion valve of the device corresponding to the operating parameter or the ambient temperature from the association relation includes: and generating a second association relation in advance, wherein the association relation can be an AD table which stores target opening degrees of the electronic expansion valves corresponding to the operation parameters, and can represent the correspondence relation between the operation parameters and the target opening degrees, and each group of operation parameters corresponds to one target opening degree.

Or, the association relationship is generated in advance, and the association relationship may be an AD table storing target opening degrees of the electronic expansion valves corresponding to the ambient temperatures, and may represent a correspondence relationship between the ambient temperatures and the target opening degrees, where each ambient temperature corresponds to one target opening degree.

And S14, adjusting the actual opening of the electronic expansion valve according to the target opening.

In this embodiment, it is determined whether the target opening S of the electronic expansion valve is equal to the actual opening Z, if the target opening S is not equal to the actual opening Z, the electronic expansion valve is controlled by the inverter driving board to adjust the step number to the target opening, if the target opening is equal to the actual opening, the adjustment is not performed, and the steps S11 to S14 are repeatedly performed every predetermined time interval.

According to the electronic expansion valve control method provided by the embodiment of the invention, the operation parameters of the frequency conversion module of the equipment are obtained; acquiring the ambient temperature around the frequency conversion module; determining the target opening of the electronic expansion valve corresponding to the operation parameter and/or the environmental temperature from an association relation, wherein the association relation stores the correspondence relation among a plurality of groups of operation parameters, the environmental temperature and the target opening of the electronic expansion valve; and adjusting the actual opening of the electronic expansion valve according to the target opening. Therefore, the opening size of the electronic expansion valve can be prevented from being frequently regulated, the service life of the electronic expansion valve is prolonged, a buffer cavity is not required to be additionally arranged on a radiator, the electronic expansion valve is used for controlling a refrigerant to take away heat of the module by using less refrigerant when the ambient temperature is high, and the purpose of cooling the module is achieved.

Fig. 2 is a flow chart of a method for generating an association relationship according to an embodiment of the present invention, as shown in fig. 2, where the method specifically includes:

s21, acquiring a plurality of groups of historical operation parameters of the frequency conversion module to obtain a historical operation parameter set.

In this embodiment, it is necessary to determine the corresponding historical opening degree by the historical operating parameter and the historical ambient temperature and generate the association relationship.

Specifically, a plurality of historical operating frequencies and a plurality of historical bus voltages in the historical operating process are obtained, and the historical operating frequencies and the historical bus voltages are used as a plurality of groups of historical operating parameter sets.

S22, controlling the frequency conversion module to operate according to any historical bus voltage and any historical operating frequency respectively; determining the corresponding heating power of the frequency conversion module when the frequency conversion module operates according to each group of historical operation parameters; and determining the heat dissipation capacity of each heating power in a preset time period to obtain a heat dissipation capacity set.

In this embodiment, the control frequency conversion module operates according to any one of the historical bus voltages and any one of the historical operating frequencies in the historical operating parameter set, that is, the plurality of historical operating frequencies and the plurality of historical bus voltages in the historical operating parameter set are arranged and combined one by one to obtain a plurality of combination modes, the control frequency conversion module operates according to each combination mode, and the heating power P of the frequency converter corresponding to each combination mode is determined. And determining the heat dissipation capacity of each heating power in a preset time period to obtain a heat dissipation capacity set, wherein the preset time period corresponding to each heating power is the same.

In one possible implementation, a developer may preset multiple sets of historical operating parameters, and the software provided by the manufacturer of the frequency converter module is used to calculate the heating power P of the frequency converter module at different historical bus voltages V and different historical operating frequencies F. The heating power calculation is performed by simulation software of a frequency converter manufacturer, for example, and can include, but is not limited to, an iposim online simulation system of inflorescence and melciim offline simulation software of Mitsubishi.

S23, acquiring a plurality of historical environment temperatures to obtain a historical environment temperature set; when the frequency conversion module operates with any one set of historical operating parameters at any historical ambient temperature, the historical opening of the electronic expansion valve is adjusted; and acquiring the heat absorption quantity of the refrigerant in the preset time period aiming at each historical opening to obtain a heat absorption quantity set.

In this embodiment, a plurality of historical ambient temperatures of the frequency converter in a historical operation process are obtained as a historical ambient temperature set, the frequency converter is controlled to operate at each historical ambient temperature respectively, in the process of operating at each historical ambient temperature, the frequency converter is controlled to operate sequentially with each set of historical operation parameters, the operation time is the preset time period, the historical opening of the electronic expansion valve is adjusted in the process of each operation, so that the refrigerant flow in the radiator is adjusted by controlling the historical opening of the electronic expansion valve, heat is absorbed by the frequency converter through the refrigerant flow, so that the temperature of the frequency converter after heat absorption is smaller than a set threshold value, and the heat absorption amount of the refrigerant in the heat absorption process is determined.

In one possible implementation manner, a plurality of historical environment temperatures may be preset by a developer, and the simulation software is utilized to calculate the heat absorption quantity Q absorbed by the refrigerant evaporation energy when the electronic expansion valve has different historical opening degrees S at different historical environment temperatures T, where the heat simulation software may include FLUENT.

In one possible embodiment, the suitable operating temperature range T1-T2 of the frequency converter module is obtained from a frequency converter module data manual. A plurality of historical ambient temperatures are controlled to be within a temperature range. For example, the junction temperature of the module is in the range of-30 to 150 ℃, and in practical use, a suitable upper temperature limit, such as 100 ℃, is determined by referring to the junction temperature range, so that the temperature of the module is ensured not to exceed the set upper limit of 100 ℃ when the opening degree of the electronic expansion valve is regulated.

S24, judging whether the heat absorption capacity and the heat dissipation capacity are matched or not in the process of adjusting the historical opening of the electronic expansion valve each time; and when the matching is determined, generating the corresponding relation among the current historical opening degree, the historical operating parameter and the historical environment temperature.

In this embodiment, when the historical ambient temperature or the historical operating parameter is changed once, the historical target opening is redetermined and the opening is redetermined, and after the historical opening of the electronic expansion valve is adjusted each time, whether the heat absorption capacity and the heat dissipation capacity are matched is judged, and the judging method may include: and determining matching when the heat absorption capacity and the heat dissipation capacity are the same, or determining matching when the difference between the heat absorption capacity and the heat dissipation capacity is smaller than a preset value. When the matching is determined, the corresponding relation among the current historical opening, the historical operating parameter and the historical environment temperature is generated, and when the matching is not determined, the step of adjusting the historical opening is continued.

S25, determining a plurality of corresponding relations among the historical environment temperature set, the historical operation parameter set and the corresponding historical opening degree set according to the heat dissipation capacity set and the heat absorption capacity set, and generating the association relation according to the corresponding relations.

In this embodiment, a plurality of heat absorption amounts and heat dissipation amounts matched in the heat absorption amount set and the heat dissipation amount set may be determined through the steps of S21 to S24, and each set of matched heat absorption amounts and heat dissipation amounts corresponds to a set of historical environment temperatures, historical operating parameters and historical opening degrees, so that a corresponding relationship is generated according to each set of matched heat absorption amounts and heat dissipation amounts corresponding to the historical environment temperatures, the historical operating parameters and the historical opening degrees, and therefore, a plurality of sets of corresponding relationships may be obtained, and the AD table in the plurality of sets of corresponding relationships is generated as the association relationship.

In one possible implementation manner, the generated association relation is tested, the actual opening degree of the electronic expansion valve is adjusted through the AD table, the actual temperature rise of the frequency converter module is obtained, whether the heat dissipation capacity and the heat absorption capacity are matched or not is determined according to the actual temperature rise, and therefore the accuracy of the AD table can be verified, and the AD table is compensated and adjusted by combining the data actually tested in a laboratory in places with larger AD table deviation.

As an example, after determining the ambient temperature T, the bus voltage V, and the operating frequency F, the target opening S may be obtained by the association relationship.

AD at the time of specific program processing means, for example, the following

convert[T][V][F]＝

{

{{s1,s2,…sF}1,{…}2,{…}3,…{…}V}1,

…

{{…}1,{…}2,{…}3,…{…}V}T

}

Examples of the generated association relationship include: the ambient temperature T is 25, 26, 27, respectively; bus voltages V are 543, 544, 545, respectively; the association relationship generated when the working frequency F is 60, 61, 62, 63 is as follows, and the association relationship comprises three AD tables, wherein the numbers in the tables are the target opening degrees corresponding to different F, T and V.

Examples of specific procedures for bringing in are as follows

convert[3][3][4]＝

{

{{374,376,378,380}543,{375,377,379,381}544,{376,378,380,382}545}25,

{{375,377,379,381}543,{376,378,380,382}544,{377,379,381,383}545}26,

{{376,378,380,382}543,{377,379,381,383}544,{378,380,382,384}545}27,

}

The AD table is processed in a three-dimensional array, such as determining the current ambient temperature t=26, the current bus voltage v=544, the current operating frequency f=61.

From t=26, { {375,377,379,381}543, {376,378,380,382}544, {377,379,381,383}545}26 in the AD table is determined

From v=544, it is further determined that {376,378,380,382}544 in the AD table

{376,378,380,382}544 in the AD table is further determined by f=61

The target opening S of the electronic expansion valve obtained when t=26, v=544, and f=61 is 378.

According to the generation method of the association relation provided by the embodiment of the invention, the frequency conversion module is controlled to operate according to any historical bus voltage and any historical operating frequency respectively by acquiring a plurality of groups of historical operating parameters of the frequency conversion module; determining corresponding heating power during operation; determining the heat dissipation capacity of each heating power, and obtaining a historical environment temperature set; when the frequency conversion module operates with any one set of historical operating parameters at any historical ambient temperature, the historical opening of the electronic expansion valve is adjusted; acquiring the heat absorption capacity of the refrigerant in the preset time period for each historical opening, and judging whether the heat absorption capacity is matched with the heat dissipation capacity or not in the process of adjusting the historical opening of the electronic expansion valve each time; when the matching is determined, generating a corresponding relation among the current historical opening degree, the historical operating parameters and the historical environment temperature, and generating the association relation according to the corresponding relations. Therefore, the opening degree of the electronic expansion valve can be directly determined by calculating the heating power of the frequency conversion module under different voltages and frequencies and the heat absorbed by the refrigerant evaporation energy when the electronic expansion valve is at different opening degrees under different environmental temperatures, and the association relation is generated according to the bus voltage, the working frequency, the environmental temperature and the electronic expansion opening degree.

The accuracy of determining the target opening degree can be improved through the generated association relation, the opening degree of the electronic expansion valve can be adjusted without pressure and temperature feedback, the problem that the electronic expansion valve needs to frequently adjust the opening size due to extremely high temperature response speed, so that the service life of the electronic expansion valve is short is avoided, meanwhile, a pressure sensor and a temperature sensor are not required to be installed at a liquid outlet, the cost of the whole machine is reduced, meanwhile, a buffer cavity is not required to be added to a radiator, the heat exchange efficiency is high, less refrigerant can be used for taking away the heat of a module when the ambient temperature is high, and the purpose of cooling the module is achieved.

Fig. 3 is a schematic flow chart of another control method of an electronic expansion valve according to an embodiment of the present invention, as shown in fig. 3, the method specifically includes:

s31, when equipment corresponding to the electronic expansion valve receives a first operation; a predicted ambient temperature and a predicted operating parameter are determined based on the first operation.

In this embodiment, the device is an intelligent air conditioning device where the electronic expansion valve is located, and the first operation may include an operation of adjusting a temperature of the air conditioner triggered by a user, or an operation of adjusting an operation mode and an operation time of the air conditioner (for example, controlling a decrease and an increase of an air outlet temperature, setting a timing to turn off the air conditioner, adjusting a wind speed of the air conditioner, etc.). And predicting the predicted environmental temperature around the frequency conversion module after a period of time according to the first operation, and determining the predicted operation parameters after a period of time according to the specific content of the first operation adjustment.

Specifically, when the air conditioner receives the first operation once in the history operation process, the air conditioner obtains the corresponding environment temperature and the corresponding operation parameter after the preset time, takes the environment temperature and the corresponding operation parameter as the predicted environment temperature and the predicted operation parameter corresponding to the first operation, stores the predicted environment temperature and the corresponding operation parameter into the storage area, and searches the corresponding predicted environment temperature and the corresponding predicted operation parameter from the storage area after the first operation is currently received.

S32, determining the predicted opening corresponding to the predicted environmental temperature and the predicted operation parameter; determining a predicted cooling capacity according to the predicted operating parameter; and when the predicted heat dissipation amount is larger than a first set threshold value, adjusting the current opening degree of the electronic expansion valve to be the predicted opening degree.

In this embodiment, the predicted opening degrees corresponding to the predicted environmental temperature and the predicted operation parameters are determined according to the above-mentioned association relationship, and the predicted heat dissipation amount is determined by the simulation software in step S22, or the predicted heat dissipation amount corresponding to the predicted operation parameters is determined according to the heat dissipation amount corresponding to the historical operation parameters. When the predicted heat dissipation capacity is larger than the first set threshold value, the predicted heat dissipation capacity is excessively large, and long time is consumed when the heat is absorbed through the radiator, so that the operation parameter is not required to be changed into the predicted operation parameter, the opening is immediately adjusted to be the predicted opening at the current moment, the heat dissipation speed of the frequency converter is improved, or the actual opening of the electronic expansion valve is adjusted to be larger than the predicted opening, so that the effect of rapid heat dissipation is realized. When the predicted heat dissipation amount is smaller than or equal to the first set threshold value, the opening degree can be adjusted to be the predicted opening degree when the actual operation parameter reaches the predicted operation parameter.

In one possible implementation manner, obtaining time information of equipment prediction closing corresponding to the electronic expansion valve; and when the time information is smaller than the second set threshold value and the current heat dissipation capacity is smaller than the third set threshold value, controlling the radiator to be closed.

Specifically, when the user sets a timing closing for the device, the time length of the predicted closing is obtained at this time, the time length of the current moment from the predicted closing time is determined as time information, and when the time information is smaller than the second set threshold and the current heat dissipation capacity is smaller than the third set threshold, it is indicated that the heat dissipation capacity is smaller at this time and the device is about to be closed, heat dissipation is not needed, and at this time, the heat radiator is controlled to be closed, so that resource consumption is saved.

According to the electronic expansion valve control method provided by the embodiment of the invention, when equipment corresponding to the electronic expansion valve receives a first operation; a predicted ambient temperature and a predicted operating parameter are determined based on the first operation. Determining the predicted opening corresponding to the predicted environmental temperature and the predicted operation parameter; determining a predicted cooling capacity according to the predicted operating parameter; and when the predicted heat dissipation amount is larger than a first set threshold value, adjusting the current opening degree of the electronic expansion valve to be the predicted opening degree. The electronic expansion valve can flexibly adjust the actual opening degree of the electronic expansion valve, can rapidly dissipate heat under specific conditions, saves electric quantity for equipment, and avoids frequent opening degree adjustment.

Fig. 4 is a schematic structural diagram of an electronic expansion valve control device according to an embodiment of the present invention, as shown in fig. 4, where the device specifically includes:

an acquisition module 41, configured to acquire an operation parameter of a frequency conversion module in the device;

the obtaining module 41 is further configured to obtain an ambient temperature around the frequency conversion module;

the determining module 42 is configured to determine a target opening of an electronic expansion valve of the device corresponding to the operation parameter and/or the ambient temperature from an association relationship, where the association relationship stores a correspondence relationship among a plurality of groups of operation parameters, the ambient temperature, and the target opening of the electronic expansion valve;

and an adjustment module 43, configured to adjust an actual opening of the electronic expansion valve according to the target opening.

In one possible implementation manner, the obtaining module 41 is specifically configured to obtain, during operation of the frequency conversion module, a current bus voltage of the frequency conversion module;

acquiring the current working frequency of the frequency conversion module;

the determining module 42 is specifically configured to determine the bus voltage and the operating frequency as the operating parameters.

In a possible implementation manner, the obtaining module 41 is further configured to obtain a plurality of sets of historical operating parameters of the frequency conversion module, so as to obtain a set of historical operating parameters, where the historical operating parameters include: historical operating frequency and historical bus voltage;

the control module 44 is configured to control the frequency conversion module to operate according to any one of the historical bus voltages and any one of the historical operating frequencies, respectively;

the determining module 42 is further configured to determine a heating power corresponding to the frequency conversion module when the frequency conversion module operates according to each set of the historical operating parameters;

In a possible implementation manner, the obtaining module 41 is further configured to obtain a plurality of historical ambient temperatures, to obtain a set of historical ambient temperatures;

the adjusting module 43 is further configured to adjust a historical opening of the electronic expansion valve when the frequency conversion module operates with any one set of historical operating parameters at any one of the historical ambient temperatures, so as to adjust a refrigerant flow in a radiator through the electronic expansion valve, where the radiator is disposed adjacent to the frequency conversion module;

the obtaining module 41 is further configured to obtain, for each of the historical openings, an amount of heat absorption of the refrigerant in the preset period of time, and obtain an amount of heat absorption set.

In one possible implementation manner, the determining module 43 is specifically configured to determine whether the heat absorption amount matches the heat dissipation amount during each adjustment of the historical opening of the electronic expansion valve;

In a possible implementation manner, the determining module 42 is further configured to determine, when the device corresponding to the electronic expansion valve receives a first operation, a predicted ambient temperature and a predicted operation parameter according to the first operation;

the adjusting module 43 is further configured to adjust the current opening of the electronic expansion valve to the predicted opening when the predicted heat dissipation capacity is greater than a first set threshold.

In a possible implementation manner, the obtaining module 41 is further configured to obtain time information of device prediction closing corresponding to the electronic expansion valve;

the control module 44 is further configured to control the radiator to be turned off when the time information is less than a second set threshold and the current heat dissipation capacity is less than a third set threshold.

The electronic expansion valve control device provided in this embodiment may be a device as shown in fig. 4, and may perform all steps of the method shown in fig. 1-3, thereby achieving the technical effects of the method shown in fig. 1-3, and the detailed description with reference to fig. 1-3 is omitted herein for brevity.

Fig. 5 is a schematic structural diagram of an apparatus according to an embodiment of the present invention, and the apparatus 500 shown in fig. 5 includes: at least one processor 501, memory 502, at least one network interface 504, and other user interfaces 503. The various components in device 500 are coupled together by bus system 505. It is understood that bus system 505 is used to enable connected communications between these components. The bus system 505 includes a power bus, a control bus, and a status signal bus in addition to a data bus. But for clarity of illustration the various buses are labeled as bus system 505 in fig. 5.

The user interface 503 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, a trackball, a touch pad, or a touch screen, etc.).

It will be appreciated that the memory 502 in embodiments of the invention can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), and Direct memory bus RAM (DRRAM). The memory 502 described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

In some implementations, the memory 502 stores the following elements, executable units or data structures, or a subset thereof, or an extended set thereof: an operating system 5021 and application programs 5022.

The operating system 5021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks. The application 5022 includes various application programs such as a Media Player (Media Player), a Browser (Browser), and the like for realizing various application services. A program for implementing the method according to the embodiment of the present invention may be included in the application 5022.

In the embodiment of the present invention, the processor 501 is configured to execute the method steps provided by the method embodiments by calling a program or an instruction stored in the memory 502, specifically, a program or an instruction stored in the application 5022, for example, including:

acquiring operation parameters of a frequency conversion module in equipment;

acquiring the ambient temperature around the frequency conversion module;

The method disclosed in the above embodiment of the present invention may be applied to the processor 501 or implemented by the processor 501. The processor 501 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuitry in hardware or instructions in software in the processor 501. The processor 501 may be a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present invention may be implemented or performed. 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 connection with the embodiments of the present invention may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software elements in a decoding processor. The software elements may be located in a random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory 502, and the processor 501 reads information in the memory 502 and, in combination with its hardware, performs the steps of the method described above.

It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For a hardware implementation, the processing units may be implemented within one or more application specific integrated circuits (Application Specific Integrated Circuits, ASIC), digital signal processors (Digital Signal Processing, DSP), digital signal processing devices (dspev, DSPD), programmable logic devices (Programmable Logic Device, PLD), field programmable gate arrays (Field-Programmable Gate Array, FPGA), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units designed to perform the functions described herein, or a combination thereof.

For a software implementation, the techniques described herein may be implemented by means of units that perform the functions described herein. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.

The apparatus provided in this embodiment may be an apparatus as shown in fig. 5, and may perform all steps of the method as shown in fig. 1-3, thereby achieving the technical effects of the method as shown in fig. 1-3, and the detailed description with reference to fig. 1-3 is omitted herein for brevity.

The embodiment of the invention also provides a storage medium (computer readable storage medium). The storage medium here stores one or more programs. Wherein the storage medium may comprise volatile memory, such as random access memory; the memory may also include non-volatile memory, such as read-only memory, flash memory, hard disk, or solid state disk; the memory may also comprise a combination of the above types of memories.

When one or more programs are executed in a storage medium by one or more processors, the method performed on the device side is implemented.

The processor is configured to execute a program stored in the memory to implement the following steps of a method performed on the device side:

acquiring operation parameters of a frequency conversion module in equipment;

acquiring the ambient temperature around the frequency conversion module;

Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative elements and steps are described above generally in terms of function in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware, in a software module executed by a processor, or in a combination of the two. The software modules may be disposed in Random Access Memory (RAM), memory, read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.

Claims

1. An electronic expansion valve control method, characterized by comprising:

acquiring operation parameters of a frequency conversion module in equipment;

acquiring the ambient temperature around the frequency conversion module;

2. The method of claim 1, wherein the obtaining the operating parameters of the frequency conversion module in the device comprises:

acquiring the current working frequency of the frequency conversion module;

3. The method of claim 1, wherein prior to the obtaining the operating parameters of the frequency conversion module in the device, the method further comprises:

4. A method according to claim 3, wherein before the obtaining of the operating parameters of the frequency conversion module in the device, the method further comprises:

5. The method of claim 4, wherein the correspondence is generated by:

6. The method according to claim 1, wherein the method further comprises:

7. The method according to claim 4, wherein the method further comprises:

8. An electronic expansion valve control device, characterized by comprising:

9. An apparatus, comprising: a processor and a memory, the processor being configured to execute an electronic expansion valve control program stored in the memory to implement the electronic expansion valve control method according to any one of claims 1 to 7.

10. A storage medium storing one or more programs executable by one or more processors to implement the electronic expansion valve control method of any one of claims 1-7.