CN114440503A - Method and device for controlling opening of electronic expansion valve, air conditioner and storage medium - Google Patents
Method and device for controlling opening of electronic expansion valve, air conditioner and storage medium Download PDFInfo
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- CN114440503A CN114440503A CN202011228089.9A CN202011228089A CN114440503A CN 114440503 A CN114440503 A CN 114440503A CN 202011228089 A CN202011228089 A CN 202011228089A CN 114440503 A CN114440503 A CN 114440503A
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- 238000000034 method Methods 0.000 title claims abstract description 58
- 238000012937 correction Methods 0.000 claims description 77
- 238000010438 heat treatment Methods 0.000 claims description 15
- 238000005057 refrigeration Methods 0.000 claims description 7
- 230000002159 abnormal effect Effects 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract 5
- 230000001276 controlling effect Effects 0.000 description 27
- 238000001816 cooling Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 239000003507 refrigerant Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
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Abstract
The invention discloses a method for controlling the opening of an electronic expansion valve, which comprises the following steps: after a compressor of the air conditioner is started, acquiring indoor environment temperature and outdoor environment temperature; determining an initial opening value of an electronic expansion valve of the air conditioner according to the indoor environment temperature and the outdoor environment temperature; and controlling the electronic expansion valve to operate according to the initial opening value. The invention also provides a control device of the opening of the electronic expansion valve, an air conditioner and a storage medium. The method for controlling the opening degree of the electronic expansion valve can determine the initial opening degree value of the electronic expansion valve corresponding to different environmental temperatures, such as indoor environmental temperature and outdoor environmental temperature, after the compressor of the air conditioner is started, and further control the electronic expansion valve to operate according to the initial opening degree value determined by the environmental temperature, so that the abnormal problem caused by the fact that the opening degree value of the electronic expansion valve is too small or too large when the electronic expansion valve of the air conditioner is controlled to operate according to the fixed opening degree value at different environmental temperatures is avoided.
Description
Technical Field
The invention relates to the technical field of air conditioner control, in particular to a method and a device for controlling the opening of an electronic expansion valve, an air conditioner and a storage medium.
Background
At present, after an air conditioner is opened, an electronic expansion valve is usually operated by adopting a fixed initial opening value, and after the electronic expansion valve is operated for a period of time according to the initial opening value, namely a system is relatively stable, the opening of the electronic expansion valve is controlled according to detected parameters such as temperature, frequency and the like. It should be noted that if the indoor and outdoor ambient temperatures are high, the initial opening of the expansion valve is too small, the system flow is too small, and the low-pressure is too low, which may cause the alarm of the detection equipment in the production line operation room and affect the production efficiency; if the indoor and outdoor environment temperature is very low, the initial opening degree is too large, the system flow is too large, the liquid return of the compressor is easily caused, and the service life of the compressor is influenced.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a method and a device for controlling the opening of an electronic expansion valve, an air conditioner and a storage medium, and aims to solve the problem that the air conditioner is damaged or the operation efficiency of the air conditioner is influenced when the electronic expansion valve operates at a fixed initial opening value after the air conditioner is opened at different indoor and outdoor temperatures.
In order to achieve the above object, the present invention provides a method for controlling an opening degree of an electronic expansion valve, including:
after a compressor of the air conditioner is started, acquiring indoor ambient temperature and outdoor ambient temperature;
determining an initial opening value of an electronic expansion valve of the air conditioner according to the indoor environment temperature and the outdoor environment temperature;
and controlling the electronic expansion valve to operate according to the initial opening value.
Optionally, the step of determining an initial opening value of an electronic expansion valve of the air conditioner according to the indoor ambient temperature and the outdoor ambient temperature includes:
determining a reference opening value of the electronic expansion valve according to the outdoor environment temperature;
determining an opening correction value of the electronic expansion valve according to the indoor environment temperature;
and correcting the reference opening value according to the opening correction value to obtain the initial opening value.
Optionally, the step of determining a reference opening value of the electronic expansion valve according to the outdoor ambient temperature includes:
acquiring a first target temperature interval where the outdoor environment temperature is located;
and acquiring the reference opening value of the electronic expansion valve according to the first target temperature interval, wherein the reference opening value has the same change trend with the first target temperature interval in a refrigeration mode, and the reference opening value has the opposite change trend with the first target temperature interval in a heating mode.
Optionally, the step of determining the opening correction value of the electronic expansion valve according to the indoor ambient temperature includes:
acquiring a current operation mode;
and determining the opening correction value of the electronic expansion valve according to the operation mode and the indoor environment temperature.
Optionally, the step of determining the opening degree correction value of the electronic expansion valve according to the operation mode and the indoor ambient temperature includes:
acquiring a second target temperature interval where the indoor environment temperature is;
and determining the opening correction value according to the second target temperature interval in the running mode.
Optionally, after the step of controlling the electronic expansion valve to operate according to the initial opening value, the method includes:
and after controlling the electronic expansion valve to operate for a preset time according to the initial opening value, adjusting the opening value of the electronic expansion valve according to the detected outdoor environment temperature and the operation frequency of a compressor of the air conditioner.
In order to achieve the above object, the present invention provides a control device for an opening degree of an electronic expansion valve, comprising:
the system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring indoor environment temperature and outdoor environment temperature after a compressor of the air conditioner is started;
the determining module is used for determining an initial opening value of an electronic expansion valve of the air conditioner according to the indoor environment temperature and the outdoor environment temperature;
and the control module is used for controlling the electronic expansion valve to operate according to the initial opening value.
Further, to achieve the above object, the present invention also provides an air conditioner including: the control method comprises a memory, a processor and a control program of the opening degree of the electronic expansion valve, wherein the control program of the opening degree of the electronic expansion valve is stored in the memory and can run on the processor, and when the control program of the opening degree of the electronic expansion valve is executed by the processor, the control program of the opening degree of the electronic expansion valve realizes the steps of the control method of the opening degree of the electronic expansion valve.
In order to achieve the above object, the present invention further provides a storage medium having stored thereon a control program of an electronic expansion valve opening degree, the control program of the electronic expansion valve opening degree realizing the steps of the control method of the electronic expansion valve opening degree as described above when executed by the processor.
Compared with the method that the electronic expansion valve of the air conditioner is controlled to operate at a fixed opening value after the air conditioner is started, when the indoor and outdoor ambient temperature is high, if the initial opening value of the electronic expansion valve is too small, the flow is too small, and the low-pressure is too low, the alarm of the detection equipment of the production line operation room can be caused, and the production efficiency is influenced; the temperature of the indoor and outdoor environment is low, the flow is too large due to the overlarge initial opening value of the electronic expansion valve, the liquid return of the compressor is easy to cause, the service life of the compressor is influenced, and the air conditioner is damaged.
In the technical scheme disclosed in this embodiment, after a compressor of the air conditioner is started, an initial opening value of an electronic expansion valve of the air conditioner is determined according to an indoor environment temperature and an outdoor environment temperature where the air conditioner is located, and the method is suitable for determining the initial opening value of the electronic expansion valve corresponding to different indoor environment temperatures and outdoor environment temperatures, and further controlling the electronic expansion valve to operate according to the initial opening value determined according to the environment temperature, namely the indoor environment temperature and the outdoor environment temperature, so that the problem that the opening value of the electronic expansion valve is too small or too large to cause abnormality when the electronic expansion valve of the air conditioner is controlled to operate according to the fixed opening value at different environment temperatures can be avoided.
Drawings
FIG. 1 is a diagram illustrating a hardware operating environment involved in various embodiments of a method for controlling an opening of an electronic expansion valve according to the present invention;
FIG. 2 is a schematic flow chart illustrating a first embodiment of a method for controlling the opening of an electronic expansion valve according to the present invention;
FIG. 3 is a schematic flow chart illustrating a first embodiment of a method for controlling an opening of an electronic expansion valve according to the present invention to determine an initial opening value of the electronic expansion valve;
FIG. 4 is a flowchart illustrating a second embodiment of a method for controlling the opening of an electronic expansion valve according to the present invention;
fig. 5 is a block diagram of an electronic expansion valve opening degree control apparatus according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic diagram illustrating a hardware operating environment according to various embodiments of a method for controlling an opening of an electronic expansion valve of the present invention.
The execution subject of the embodiment of the control method of the opening degree of the electronic expansion valve of the present invention may be an air conditioner.
As shown in fig. 1, the air conditioner may include: a processor 101, a communication bus 102, and a memory 103. Those skilled in the art will appreciate that the block diagram of the air conditioner shown in fig. 1 does not constitute a limitation of the air conditioner, and that the air conditioner may include more or less components than those shown, or some components may be combined, or a different arrangement of components. The processor 101 is a control center of the air conditioner, the communication bus 102 is used for realizing connection and communication among various components of the air conditioner, and the memory 103 stores an operating system and a control program of the opening degree of the electronic expansion valve. The processor 101 executes a control program of the opening degree of the electronic expansion valve stored in the memory 103 to implement the steps of the embodiments of the control method of the opening degree of the electronic expansion valve of the present invention.
Various embodiments of the control method of the opening degree of the electronic expansion valve of the present invention are proposed based on the structural block diagram of the terminal device described above.
Referring to fig. 2, fig. 2 is a schematic flow chart illustrating a method for controlling an opening of an electronic expansion valve according to a first embodiment of the present invention. In this embodiment, the method for controlling the opening of the electronic expansion valve includes the steps of:
step S10, after the compressor of the air conditioner is started, the indoor environment temperature and the outdoor environment temperature are obtained;
the acquisition of the indoor ambient temperature may be obtained by detecting the indoor ambient temperature with an ambient temperature detecting device, such as a temperature sensor or a temperature sensing bulb, disposed in the indoor unit of the air conditioner.
Step S20, determining the initial opening value of the electronic expansion valve of the air conditioner according to the indoor environment temperature and the outdoor environment temperature;
and step S30, controlling the electronic expansion valve to operate according to the initial opening value.
It should be noted that, when the indoor and outdoor ambient temperatures are high, if the initial opening value of the electronic expansion valve is too small, the system flow is too small, for example, the refrigerant flow is too small, and the low-pressure is too low, the alarm of the detection equipment in the production line operation room is caused, and the production efficiency is affected; when the indoor and outdoor ambient temperature is very low, if the initial opening of the electronic expansion valve is too large to the overlarge system flow, the liquid return of the compressor is easily caused, and the service life of the compressor is influenced. In the practical application process, in order to avoid the abnormal situation caused by unreasonable setting of the initial opening value of the electronic expansion valve when the indoor and outdoor environment temperatures are high or low, the initial opening value of the electronic expansion valve of the air conditioner is determined according to the indoor environment temperature and the outdoor environment temperature of the air conditioner based on the change of the environment temperature of the air conditioner such as the indoor environment temperature and/or the indoor environment temperature, so that the method is suitable for determining the initial opening value of the electronic expansion valve corresponding to different indoor environment temperatures and outdoor environment temperatures, and further controlling the electronic expansion valve to operate according to the initial opening value determined according to the environment temperature, namely the indoor environment temperature and the outdoor environment temperature.
Determining an initial opening value of an electronic expansion valve of the air conditioner according to the indoor environment temperature and the outdoor environment temperature, wherein a reference opening value of the electronic expansion valve can be determined according to the outdoor environment temperature; determining an opening correction value of the electronic expansion valve according to the indoor environment temperature; correcting the reference opening value according to the opening correction value to obtain an initial opening value; other methods including determining the initial opening value of the electronic expansion valve of the air conditioner by using the outdoor ambient temperature and the indoor ambient temperature may also be used, for example, the initial opening value of the electronic expansion valve of the air conditioner is determined based on the difference between the outdoor ambient temperature, the indoor ambient temperature and the indoor and outdoor ambient temperatures, which is not limited herein.
As an alternative embodiment, referring to fig. 3, fig. 3 is a schematic flow chart illustrating a method for controlling an opening of an electronic expansion valve according to the present invention, in which the determining an initial opening value of the electronic expansion valve in step S20, that is, the determining an initial opening value of an electronic expansion valve of an air conditioner according to the indoor ambient temperature and the outdoor ambient temperature includes:
step S21, determining a reference opening value of the electronic expansion valve according to the outdoor environment temperature;
step S22, determining an opening correction value of the electronic expansion valve according to the indoor ambient temperature;
and step S23, correcting the reference opening value according to the opening correction value to obtain the initial opening value.
The initial opening value is an opening value at which the electronic expansion valve of the air conditioner is initially opened after the compressor of the air conditioner is started. The reference opening value is the opening value of the electronic expansion valve determined according to the outdoor environment temperature. The opening degree correction value is an opening degree adjustment value that corrects a reference opening degree value of the electronic expansion valve, which is determined according to the indoor ambient temperature, wherein the opening degree adjustment value, that is, the opening degree correction value, may be a positive number or a negative number.
Alternatively, the step S21, namely, determining the reference opening degree value of the electronic expansion valve according to the outdoor environment temperature, includes:
acquiring a first target temperature interval where the outdoor environment temperature is located;
and acquiring the reference opening value of the electronic expansion valve according to the first target temperature interval, wherein the reference opening value has the same change trend with the first target temperature interval in a refrigeration mode, and the reference opening value has the opposite change trend with the first target temperature interval in a heating mode.
It should be noted that a plurality of outdoor environment temperature intervals may be preset, and a reference opening value of the electronic expansion valve is set corresponding to each preset outdoor environment temperature interval, wherein the reference opening value of the electronic expansion valve set corresponding to each preset outdoor environment temperature interval may be obtained by analyzing experimental data obtained by running experiments based on different outdoor environment temperatures and opening values of the electronic expansion valve, so as to be suitable for different outdoor environment temperatures and adopting a proper reference opening value of the electronic expansion valve, and avoid problems that an air conditioner compressor may be damaged or the operating efficiency of the air conditioner may be reduced due to an improper opening value of the electronic expansion valve adopted by the outdoor environment temperature.
The operating mode includes, but is not limited to, a cooling mode and/or a heating mode. In the cooling mode, the reference opening degree value has the same change trend with the first target temperature interval, and in the heating mode, the reference opening degree value has the opposite change trend with the first target temperature interval. It should be noted that, in the cooling mode, the reference opening value has the same trend as the change trend of the first target temperature interval, that is, in the cooling mode, the higher the temperature value of the first target temperature interval is, the larger the reference opening value of the electronic expansion valve is; in the heating mode, the reference opening value has a trend opposite to that of the first target temperature interval, and the higher the temperature value of the first target temperature interval is, the smaller the reference opening value of the electronic expansion valve is. In the practical application process, as a corresponding relation of a temperature value corresponding to a reference opening value is set, complicated temperature values with similar numerical values are set, the difference of the reference opening values is small, a set temperature interval, namely a corresponding relation between an outdoor environment temperature interval and the reference opening value can be adopted, and then the reference opening value of the electronic expansion valve is obtained according to a first target temperature interval in which the outdoor environment temperature is located.
For example, three outdoor environment temperature intervals may be preset, and a reference opening value of an electronic expansion valve is set corresponding to each preset outdoor environment temperature interval, where in the cooling mode, the higher the temperature value of the outdoor environment temperature interval is, the larger the reference opening value of the electronic expansion valve is, that is, the higher the outdoor environment temperature is, the larger the cooling capacity demand is, and the larger the cooling capacity demand is, the opening value of the electronic expansion valve is increased to increase the refrigerant flow to meet the larger cooling demand; in the heating mode, the higher the temperature value of the outdoor environment temperature interval is, the smaller the reference opening value of the electronic expansion valve is, that is, the higher the outdoor environment temperature is, the smaller the refrigerating capacity demand is, and the lower refrigerating demand is satisfied by reducing the reference opening value of the electronic expansion valve to reduce the refrigerant flow.
The first target temperature interval where the outdoor environment temperature is located is obtained, and when the outdoor environment temperature is located in the preset outdoor environment temperature interval by comparing the outdoor environment temperature with each preset outdoor environment temperature interval, namely the temperature value of the outdoor environment temperature is the same as a temperature value corresponding to the preset outdoor environment temperature interval, the preset outdoor environment temperature interval is determined to be the first target temperature interval where the outdoor environment temperature is located. And acquiring the reference opening value of the electronic expansion valve according to the first target temperature interval based on the reference opening value of the electronic expansion valve set corresponding to each preset outdoor environment temperature interval, namely acquiring the reference opening value corresponding to the preset outdoor environment temperature interval which is the same as the first target temperature interval.
The opening correction value of the electronic expansion valve is determined according to the indoor environment temperature, and a corresponding relationship between the indoor environment temperature and the opening correction value of the electronic expansion valve may be preset, or a corresponding relationship between an indoor environment temperature interval and an opening correction value of the electronic expansion valve may be preset, and the opening correction value of the electronic expansion valve may be determined by obtaining the opening correction value corresponding to the indoor environment temperature, or obtaining a preset indoor environment temperature interval where the indoor environment temperature is located, and indirectly obtaining the opening correction value corresponding to the preset indoor environment temperature interval, which is not limited in this embodiment.
In the practical application process, the reference opening value determined based on the outdoor environment temperature is corrected according to the opening correction value to determine the initial opening value of the electronic expansion valve, and the corresponding opening adjustment value can be a positive number or a negative number. When the opening degree adjustment value is a positive number, the initial opening degree value can be determined by increasing the opening degree adjustment value based on the reference opening degree value, that is, the initial opening degree value is greater than the reference opening degree value; when the opening degree adjustment value is a negative number, the initial opening degree value may be determined based on a value corresponding to the reference opening degree value decreasing the opening degree adjustment value, that is, the initial opening degree value is smaller than the reference opening degree value.
Step S30, namely after controlling the electronic expansion valve to operate according to the initial opening value, includes
And after controlling the electronic expansion valve to operate for a preset time according to the initial opening value, adjusting the opening value of the electronic expansion valve according to the detected outdoor environment temperature and the operation frequency of a compressor of the air conditioner.
The preset time can be preset, and the preset time can be used for determining the time for the control system of the air conditioner to operate stably after the air conditioner is started. After the electronic expansion valve is controlled to operate for a preset time according to the initial opening value, namely when the operation stability of a control system of the air conditioner can be determined, the opening value of the electronic expansion valve can be adjusted according to the detected outdoor environment temperature and the operation frequency of a compressor of the air conditioner, so that the normal and reliable operation of the air conditioner can be ensured by controlling the opening value of the electronic expansion valve.
Compared with the method that the electronic expansion valve of the air conditioner is controlled to operate by a fixed opening value after the air conditioner is started, when the indoor and outdoor ambient temperature is high, if the initial opening value of the electronic expansion valve is too small, the system flow is too small, and the low-pressure is too low, the alarm of the detection equipment of the production line operation room can be caused, and the production efficiency is influenced; the temperature of the indoor and outdoor environment is low, the flow of the system is too large due to the overlarge initial opening value of the electronic expansion valve, the liquid return of the compressor is easy to cause, the service life of the compressor is influenced, and the air conditioner is damaged.
In the technical scheme disclosed in this embodiment, after a compressor of the air conditioner is started, an initial opening value of an electronic expansion valve of the air conditioner is determined according to an indoor environment temperature and an outdoor environment temperature where the air conditioner is located, and the method is suitable for determining the initial opening value of the electronic expansion valve corresponding to different indoor environment temperatures and outdoor environment temperatures, and further controlling the electronic expansion valve to operate according to the initial opening value determined according to the environment temperature, namely the indoor environment temperature and the outdoor environment temperature, so that the problem that the opening value of the electronic expansion valve is too small or too large to cause abnormality when the electronic expansion valve of the air conditioner is controlled to operate according to the fixed opening value at different environment temperatures can be avoided.
Referring to fig. 4, fig. 4 is a flowchart illustrating a method for controlling an opening of an electronic expansion valve according to a second embodiment of the present invention, which is based on the first embodiment. In this embodiment, the step S22, namely determining the opening correction value of the electronic expansion valve according to the indoor ambient temperature, includes:
step S221, acquiring a current running mode;
step S222, determining the opening correction value of the electronic expansion valve according to the operation mode and the indoor ambient temperature.
The operating mode includes, but is not limited to, a cooling mode and/or a heating mode. It is easy to understand that, in different operation modes, the indoor environment temperature determines the opening correction value of the electronic expansion valve, and the opening correction value corresponding to the temperature value of the indoor environment temperature may be directly obtained, or the temperature interval where the indoor environment temperature is located may be obtained, and the opening correction value corresponding to the temperature interval may be indirectly obtained, which is not limited herein. It is easily understood that the correspondence relationship between the indoor ambient temperature and the opening degree correction value, or the correspondence relationship between the temperature zone and the opening degree correction value may be set in advance.
As an alternative embodiment, the step S222 of determining the opening correction value of the electronic expansion valve according to the operation mode and the indoor ambient temperature includes:
acquiring a second target temperature interval where the indoor environment temperature is;
and determining the opening correction value according to the second target temperature interval in the running mode.
The method comprises the steps of obtaining a second target temperature interval where the indoor environment temperature is located, presetting a plurality of indoor environment temperature intervals, setting an opening correction value of the electronic expansion valve corresponding to each preset indoor environment temperature interval, analyzing the experiment data obtained based on the relation between different indoor environment temperatures and the opening correction value of the electronic expansion valve to obtain the correction value of the electronic expansion valve corresponding to each preset indoor environment temperature interval, adopting the proper opening correction value of the electronic expansion valve for different indoor environment temperatures, correcting the reference opening value determined by the outdoor environment temperature, and determining the initial opening value of the electronic expansion valve suitable for the indoor and outdoor environment temperatures.
The opening correction value is determined in the operation mode according to the second target temperature interval, and it may be substantially determined whether the opening correction value is greater than zero or less than zero according to the operation mode. For example, when the temperature value of the second target temperature interval is smaller than the preset temperature value, the second target temperature interval where the indoor environment temperature is located indicates that the indoor environment temperature is low, and the opening correction value is determined in an operation mode according to the second target temperature interval, that is, in a refrigeration mode, the indoor environment temperature is low, the refrigerating capacity demand is low, and the opening correction value is smaller than zero; in the heating mode, the indoor environment temperature is low, the heating quantity demand is high, the opening correction value is larger than zero, and the initial opening value of the electronic expansion valve is determined by correcting the reference opening value by the opening correction value, namely the corrected opening value of the electronic expansion valve is increased, and the heating quantity demand is met by increasing the flow.
As an alternative embodiment, the step S222 of determining the opening correction value of the electronic expansion valve according to the operation mode and the indoor ambient temperature includes:
acquiring a third target temperature interval in which the indoor environment temperature is in an operation mode;
and determining the opening correction value according to the third target temperature interval.
The method comprises the steps of obtaining a third target temperature interval in which the indoor environment temperature is located in an operation mode, presetting a plurality of indoor environment temperature intervals corresponding to different operation modes, and setting an opening correction value of the electronic expansion valve corresponding to each preset indoor environment temperature interval, wherein the opening correction value of the electronic expansion valve corresponding to each preset indoor environment temperature interval can be obtained by analyzing obtained experimental data generated on the basis of the opening values of the electronic expansion valve according to different indoor environment temperatures, so that the opening correction value is suitable for different indoor environment temperatures and adopting the proper opening correction value of the electronic expansion valve, and further, a reference opening value determined by the outdoor environment temperature is corrected, and the initial opening value of the electronic expansion valve suitable for the indoor and outdoor environment temperatures is determined.
To facilitate understanding of the present embodiment, the following description is given by way of an example.
When the operation mode is a refrigeration mode, comparing the indoor environment temperature with a first preset temperature;
when the indoor environment temperature is less than or equal to a first preset temperature, determining a correction regulating value of the electronic expansion valve as a first opening correction value, wherein the first opening correction value is less than zero;
and when the indoor environment temperature is higher than the first preset temperature, determining the correction regulating value of the electronic expansion valve as a second opening correction value, wherein the second opening correction value is larger than zero.
In the practical application process, under the refrigeration mode, the outdoor environment temperature is the same, the indoor environment temperature is higher, the refrigerating capacity demand is larger, and the opening degree of the electronic expansion valve of the air conditioner can be increased to increase the refrigerant flow so as to meet the larger refrigerating capacity demand. The first preset temperature can be preset and used for determining the refrigerating capacity requirement in the refrigerating mode.
When the indoor environment temperature is lower than or equal to a first preset temperature, namely the current indoor environment temperature is lower, and the same outdoor environment temperature is lower, the lower the indoor environment temperature is, the lower the refrigeration demand is, the correction adjustment value of the electronic expansion valve is determined to be a first opening correction value, wherein the first opening correction value is smaller than zero.
Alternatively, a plurality of indoor ambient temperature sections may be set within a range less than or equal to the first preset temperature, and an opening correction value may be set corresponding to each indoor ambient temperature section, where the opening correction value is less than zero. For example: setting the indoor environment temperature interval to be 10 ℃ and 15 ℃ within the range of being less than or equal to the first preset temperature, wherein the preset temperature is 20 ℃, and the opening correction value is-3; the indoor environment temperature interval is [15 ℃, 20 ℃), the opening correction value is-2 and the like.
When the indoor environment temperature is higher than a first preset temperature, namely the current indoor environment temperature is higher, and the same outdoor environment temperature is reached, the indoor environment temperature is higher, the refrigerating demand is higher, and the correction adjustment value of the electronic expansion valve is determined to be a second opening correction value, wherein the second correction value is larger than zero.
Similarly, in the practical application process, under the heating mode, the outdoor ambient temperature is the same, the higher the indoor ambient temperature is, the smaller the refrigerating capacity demand is, and the opening degree of the electronic expansion valve of the air conditioner can be reduced to reduce the refrigerant flow so as to meet the smaller refrigerating capacity demand. That is, when the operation mode is the heating mode, comparing the indoor environment temperature with a second preset temperature; when the indoor environment temperature is less than or equal to the second preset temperature, determining the correction adjusting value of the electronic expansion valve as a third openness correction value, wherein the third openness correction value is greater than zero; and when the indoor environment temperature is higher than the second preset temperature, determining the correction adjustment value of the electronic expansion valve as a fourth degree correction value, wherein the fourth degree correction value is smaller than zero. The second preset temperature may be preset to determine a heating demand in the heating mode. The specific principle is opposite to that in the cooling mode, and is not specifically described here.
The third target temperature interval where the indoor environment temperature is located is obtained, the indoor environment temperature and each preset indoor environment temperature interval can be compared, the indoor environment temperature is located in the preset indoor environment temperature interval, namely the temperature value of the indoor environment temperature is the same as a temperature value corresponding to the preset indoor environment temperature interval, and therefore the third target temperature interval where the indoor environment temperature is located in the preset indoor environment temperature interval is determined. And acquiring the opening correction value of the electronic expansion valve according to the third target temperature interval based on the opening correction value of the electronic expansion valve set corresponding to each preset indoor environment temperature interval, namely acquiring the opening correction value corresponding to the preset indoor environment temperature interval which is the same as the third target temperature interval.
In the technical scheme disclosed in this embodiment, the opening correction value of the electronic expansion valve is determined according to the current operation mode and the indoor environment temperature, and then the reference opening value determined by the outdoor environment temperature is corrected according to the opening correction value to determine the initial opening value of the electronic expansion valve.
Referring to fig. 5, fig. 5 is a block diagram of an opening control device of an electronic expansion valve according to the present invention. The present invention also proposes a control device 100 for an opening degree of an electronic expansion valve, said control device 100 comprising:
an obtaining module 110, configured to obtain an indoor ambient temperature and an outdoor ambient temperature after a compressor of the air conditioner is started;
a determining module 120, configured to determine an initial opening value of an electronic expansion valve of an air conditioner according to the indoor ambient temperature and the outdoor ambient temperature;
and the control module 130 is configured to control the electronic expansion valve to operate according to the initial opening value.
The invention also proposes a terminal device, comprising: the method comprises a memory, a processor and a control program of the opening degree of the electronic expansion valve, wherein the control program of the opening degree of the electronic expansion valve is stored in the memory and can run on the processor, and when the control program of the opening degree of the electronic expansion valve is executed by the processor, the steps of the control method of the opening degree of the electronic expansion valve in any embodiment are realized.
The present invention also proposes a storage medium having stored thereon a control program of an electronic expansion valve opening degree, which when executed by a processor, implements the steps of the method of controlling an electronic expansion valve opening degree according to any of the above embodiments.
In the embodiments of the terminal device and the storage medium provided by the present invention, all technical features of the embodiments of the method for controlling an opening of an electronic expansion valve are included, and the expanding and explaining contents of the specification are basically the same as those of the embodiments of the method for controlling an opening of an electronic expansion valve, and are not described herein again.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a mobile terminal (such as a mobile phone, a computer, a server, a controlled terminal, or a network device) to execute the method of each embodiment of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A method for controlling the opening degree of an electronic expansion valve is characterized by comprising the following steps:
after a compressor of the air conditioner is started, acquiring indoor ambient temperature and outdoor ambient temperature;
determining an initial opening value of an electronic expansion valve of the air conditioner according to the indoor environment temperature and the outdoor environment temperature;
and controlling the electronic expansion valve to operate according to the initial opening value.
2. The method for controlling the opening degree of an electronic expansion valve according to claim 1, wherein the step of determining the initial opening degree value of the electronic expansion valve of the air conditioner according to the indoor ambient temperature and the outdoor ambient temperature comprises:
determining a reference opening value of the electronic expansion valve according to the outdoor environment temperature;
determining an opening correction value of the electronic expansion valve according to the indoor environment temperature;
and correcting the reference opening value according to the opening correction value to obtain the initial opening value.
3. The method for controlling the opening degree of an electronic expansion valve according to claim 1, wherein the step of determining the reference opening degree value of the electronic expansion valve according to the outdoor ambient temperature comprises:
acquiring a first target temperature interval where the outdoor environment temperature is located;
and acquiring the reference opening value of the electronic expansion valve according to the first target temperature interval, wherein the reference opening value has the same change trend with the first target temperature interval in a refrigeration mode, and the reference opening value has the opposite change trend with the first target temperature interval in a heating mode.
4. The method for controlling the opening degree of an electronic expansion valve according to claim 1, wherein the step of determining the opening degree correction value of the electronic expansion valve according to the indoor ambient temperature includes:
acquiring a current operation mode;
and determining the opening correction value of the electronic expansion valve according to the operation mode and the indoor environment temperature.
5. The method of controlling the opening degree of an electronic expansion valve according to claim 4, wherein the step of determining the opening degree correction value of the electronic expansion valve according to the operation mode and the indoor ambient temperature includes:
acquiring a second target temperature interval where the indoor environment temperature is;
and determining the opening correction value according to the second target temperature interval in the running mode.
6. The method for controlling the opening of an electronic expansion valve according to claim 1, wherein the step of controlling the electronic expansion valve to operate at the initial opening value is followed by the steps of:
and after controlling the electronic expansion valve to operate for a preset time according to the initial opening value, adjusting the opening value of the electronic expansion valve according to the detected outdoor environment temperature and the operating frequency of a compressor of the air conditioner.
7. An opening degree control device of an electronic expansion valve, characterized by comprising:
the system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring indoor environment temperature and outdoor environment temperature after a compressor of the air conditioner is started;
the determining module is used for determining an initial opening value of an electronic expansion valve of the air conditioner according to the indoor environment temperature and the outdoor environment temperature;
and the control module is used for controlling the electronic expansion valve to operate according to the initial opening value.
8. An air conditioner, characterized in that the air conditioner comprises: a memory, a processor and a control program of the opening of the electronic expansion valve stored in the memory and executable on the processor, the control program of the opening of the electronic expansion valve being executed by the processor to implement the steps of the control method of the opening of the electronic expansion valve according to any one of claims 1 to 6.
9. A storage medium having stored thereon a control program of an electronic expansion valve opening degree, the control program of the electronic expansion valve opening degree realizing the steps of the control method of the electronic expansion valve opening degree according to any one of claims 1 to 6 when executed by a processor.
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