CN115076867A - Electronic expansion valve control method and device, air conditioner and electronic equipment - Google Patents
Electronic expansion valve control method and device, air conditioner and electronic equipment Download PDFInfo
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- CN115076867A CN115076867A CN202210571743.9A CN202210571743A CN115076867A CN 115076867 A CN115076867 A CN 115076867A CN 202210571743 A CN202210571743 A CN 202210571743A CN 115076867 A CN115076867 A CN 115076867A
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- 238000000034 method Methods 0.000 title claims abstract description 54
- 238000004590 computer program Methods 0.000 claims description 19
- 230000004069 differentiation Effects 0.000 claims description 5
- 230000010354 integration Effects 0.000 claims description 5
- 238000004378 air conditioning Methods 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 8
- 238000004904 shortening Methods 0.000 abstract 1
- 230000008569 process Effects 0.000 description 6
- 238000004891 communication Methods 0.000 description 4
- 230000008014 freezing Effects 0.000 description 4
- 238000007710 freezing Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 1
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/46—Improving electric energy efficiency or saving
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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Abstract
The invention provides a method and a device for controlling an electronic expansion valve, an air conditioner and electronic equipment, wherein the method comprises the following steps: acquiring the environment temperature of an air conditioner external unit, and determining the target steady-state valve opening corresponding to the electronic expansion valve and the operation frequency of the first compressor at the environment temperature of the air conditioner external unit; adjusting the electronic expansion valve to a target steady-state valve opening degree, and acquiring the current compressor operation frequency as a second compressor operation frequency; an initial valve opening of the electronic expansion valve is determined based on the target steady-state valve opening, the first compressor operating frequency, and the second compressor operating frequency to adjust the electronic expansion valve based on the initial valve opening. The invention compensates the valve opening of the electronic expansion valve based on the change condition of the frequency of the compressor to ensure that the initial valve opening is close to the final steady-state valve opening, thereby shortening the adjusting time of the electronic expansion valve and realizing the purposes of saving energy and improving user experience.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a method and a device for controlling an electronic expansion valve, an air conditioner and electronic equipment.
Background
To improve the energy efficiency of air conditioners, many air conditioners employ an electronic expansion valve as a throttling device. At present, the control method of the initial valve opening of the electronic expansion valve is complex, the difference value between the initial valve opening and the final valve opening is large, the adjustment of the electronic expansion valve in place needs to take a long time, even the initial valve opening is improper, exhaust protection or internal machine freezing protection is caused, the compressor is reduced in frequency, power fluctuation is generated, and user experience is influenced.
Disclosure of Invention
The invention provides a method and a device for controlling an electronic expansion valve, an air conditioner and electronic equipment, which are used for solving the defect of long time consumption for adjusting the electronic expansion valve in the prior art, realizing the reduction of the adjustment time of the electronic expansion valve and avoiding the problems of exhaust protection or internal machine freezing protection caused by improper initial valve opening.
The invention provides a control method of an electronic expansion valve, which comprises the following steps:
acquiring the environment temperature of an air conditioner external unit in a state that the air conditioner is opened, and determining the target steady-state valve opening corresponding to the electronic expansion valve and the first compressor operation frequency corresponding to the air conditioner steady state in the environment temperature of the air conditioner external unit;
adjusting the electronic expansion valve to the target steady-state valve opening degree, and acquiring the current compressor operation frequency as a second compressor operation frequency;
determining an initial valve opening of the electronic expansion valve based on the target steady-state valve opening, the first compressor operating frequency, and the second compressor operating frequency to adjust the electronic expansion valve based on the initial valve opening.
According to the method for controlling the electronic expansion valve provided by the invention, the determining of the target steady-state valve opening degree corresponding to the electronic expansion valve and the first compressor operation frequency corresponding to the air conditioner steady state at the ambient temperature of the air conditioner external unit comprises the following steps:
matching the environmental temperature of the air conditioner external unit with a preset relation table, and determining a target steady-state valve opening corresponding to the electronic expansion valve and a first compressor operation frequency corresponding to the air conditioner steady state at the environmental temperature of the air conditioner external unit;
the relation table comprises target steady-state valve opening degrees of the electronic expansion valves corresponding to different temperature intervals and compressor operation frequency under the air conditioner steady state.
According to the method for controlling an electronic expansion valve provided by the present invention, determining an initial valve opening of the electronic expansion valve based on the target steady-state valve opening, the first compressor operating frequency, and the second compressor operating frequency comprises:
determining a frequency difference between the second compressor operating frequency and the first compressor operating frequency;
and obtaining the initial valve opening based on the target steady-state valve opening and the frequency difference.
According to the electronic expansion valve control method provided by the present invention, obtaining the initial valve opening based on the target steady-state valve opening and the frequency difference comprises:
after the frequency difference value is multiplied by a preset coefficient, summing the product with the target steady-state valve opening to obtain the initial valve opening;
and the preset coefficient is a slope value obtained by performing linear fitting between the historical operating frequency of the compressor and the historical valve opening of the electronic expansion valve.
According to the method for controlling an electronic expansion valve provided by the present invention, adjusting the electronic expansion valve based on the initial valve opening degree comprises:
and acquiring the exhaust temperature of the air conditioner, and carrying out PID (proportion integration differentiation) adjustment on the electronic expansion valve based on the exhaust temperature and the initial valve opening.
The present invention also provides an electronic expansion valve control apparatus, comprising:
the system comprises a determining module, a judging module and a judging module, wherein the determining module is used for acquiring the ambient temperature of an air conditioner external unit in a state that the air conditioner is opened, and determining the target steady-state valve opening corresponding to an electronic expansion valve and the first compressor running frequency corresponding to the steady state of the air conditioner in the ambient temperature of the air conditioner external unit;
the acquisition module is used for adjusting the electronic expansion valve to the target steady-state valve opening degree and acquiring the current compressor operation frequency as a second compressor operation frequency;
an adjustment module to determine an initial valve opening of the electronic expansion valve based on the target steady-state valve opening, the first compressor operating frequency, and the second compressor operating frequency to adjust the electronic expansion valve based on the initial valve opening.
The invention also provides an air conditioner which comprises the electronic expansion valve control device.
The present invention also provides an electronic device, comprising a memory, a processor and a computer program stored in the memory and operable on the processor, wherein the processor implements any of the above-mentioned electronic expansion valve control methods when executing the program.
The present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the electronic expansion valve control method as described in any of the above.
The present invention also provides a computer program product comprising a computer program which, when executed by a processor, implements the electronic expansion valve control method as described in any of the above.
According to the electronic expansion valve control method and device, the air conditioner and the electronic equipment, after the air conditioner is started, the working voltage of the air conditioner changes from small to large in the process until the air conditioner enters a stable state, and the frequency of a corresponding compressor changes greatly. Based on the operation frequency of the first compressor and the operation frequency of the second compressor, the change condition of the compressor frequency in the process can be preliminarily determined, after the air conditioner is started, the valve opening of the electronic expansion valve is compensated based on the change condition of the compressor frequency in the process to ensure that the initial valve opening is close to the final stable valve opening, so that the adjusting time of the electronic expansion valve can be shortened, the air conditioner can reach a stable working state in a short time, the defect of long time consumption for adjusting the electronic expansion valve in the prior art is overcome, the adjusting time of the electronic expansion valve is reduced, the problems of exhaust protection or indoor unit freezing protection caused by improper initial valve opening are avoided, and the purposes of saving energy and improving user experience are achieved.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is one of the flow diagrams of the electronic expansion valve control method provided by the present invention;
FIG. 2 is a second schematic flow chart of the method for controlling the electronic expansion valve provided by the present invention;
FIG. 3 is a schematic structural view of an electronic expansion valve control apparatus provided in the present invention;
fig. 4 is a schematic structural diagram of an electronic device provided in the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The following describes the electronic expansion valve control method, device, air conditioner and electronic equipment according to the present invention with reference to fig. 1 to 4.
As shown in fig. 1, the method for controlling an electronic expansion valve according to the present invention includes:
and 110, acquiring the ambient temperature of the air conditioner external unit in the state that the air conditioner is opened, and determining the target steady-state valve opening corresponding to the electronic expansion valve and the first compressor running frequency corresponding to the steady state of the air conditioner at the ambient temperature of the air conditioner external unit.
It is understood that the air conditioner in the present embodiment is an inverter air conditioner; the existing electronic expansion valve control logic is that the initial valve opening Y is INT (a is Hz + b + dp), and dp is (Tao-35) K 1 。
Wherein INT represents integer operation, a is preset coefficient, b is constant, and K 1 And Hz is the actual running frequency of the compressor, and Tao is the environment temperature of the air conditioner external unit detected for the first time when the air conditioner is started. a. b, K 1 The linear fitting method can be obtained by obtaining the opening of a plurality of groups of initial valves, the running frequency of the compressor and the ambient temperature of an air conditioner external unit.
The initial valve opening Y is in a linear relation with the running frequency of the compressor and the ambient temperature of an air conditioner external unit, the difference between the initial valve opening and the final valve opening is large, and more adjusting time is needed, so that the invention provides a scheme capable of reducing the adjusting time of the valve opening.
The target steady-state valve opening degree is the valve opening degree of the electronic expansion valve corresponding to the stable working state of the air conditioner after the air conditioner is started. In different air conditioner external unit ambient temperature intervals, the corresponding target steady-state valve opening degree can have differences.
The first compressor running frequency is the theoretical running frequency of the compressor when the air conditioner enters a stable working state under the current environment temperature.
And 120, adjusting the electronic expansion valve to the target steady-state valve opening degree, and acquiring the current compressor operation frequency as a second compressor operation frequency.
It can be understood that, after the air conditioner is started, the electronic expansion valve of the air conditioner is adjusted to the target steady-state valve opening degree to operate, and the current compressor operation frequency is obtained to serve as the second compressor operation frequency.
After the air conditioner is started, the opening of the electronic expansion valve needs to be adjusted until the air conditioner is in a stable working state, namely a stable state.
Further, within 3 minutes after the air conditioner is started, the electronic expansion valve is adjusted to a target steady-state valve opening degree, the current compressor operation frequency is obtained as a second compressor operation frequency, and when the air conditioner is started within 6 minutes, the initial valve opening degree is determined, and the electronic expansion valve is adjusted based on the initial valve opening degree.
It can be understood that after the air conditioner is started, the working voltage of the air conditioner changes from small to large until the air conditioner enters a steady state, and the frequency of the corresponding compressor changes greatly. Based on first compressor operating frequency to and second compressor operating frequency, can tentatively confirm the situation of change of compressor frequency in this in-process, after the air conditioner is opened, based on the situation of change of compressor frequency in this in-process earlier, compensate electronic expansion valve's valve opening, in order to ensure that initial valve opening is close with final steady state valve opening, and then can shorten electronic expansion valve's governing time, the air conditioner can reach stable operation state in the short time, realize energy-conservation and promotion user experience's purpose.
In some embodiments, the determining the target steady-state valve opening corresponding to the electronic expansion valve and the first compressor operating frequency corresponding to the air conditioner steady state at the ambient temperature of the air conditioner external unit includes:
matching the environment temperature of the air conditioner external unit with a preset relation table, and determining the target steady-state valve opening corresponding to the electronic expansion valve and the first compressor operation frequency corresponding to the air conditioner steady state at the environment temperature of the air conditioner external unit;
the relation table comprises target steady-state valve opening degrees of the electronic expansion valves corresponding to different temperature intervals and compressor operation frequency under the steady state of the air conditioner.
It is understood that the above-mentioned relation table may be determined statistically based on the steady-state valve opening and the compressor operation frequency in the steady state, which correspond to the history of different temperature intervals.
The relation table is shown in table 1, where Δ H in table 1 is a frequency difference between the operating frequency of the second compressor and the operating frequency of the first compressor in the corresponding temperature interval, and a is a predetermined coefficient.
TABLE 1
In some embodiments, said determining an initial valve opening of the electronic expansion valve based on the target steady-state valve opening, the first compressor operating frequency, and the second compressor operating frequency comprises:
determining a frequency difference between the second compressor operating frequency and the first compressor operating frequency;
and obtaining the initial valve opening based on the target steady-state valve opening and the frequency difference.
It can be understood that the frequency difference between the second compressor operation frequency and the first compressor operation frequency represents the change of the compressor operation frequency in the steady state process after the air conditioner is started, and the valve opening of the electronic expansion valve is related to the compressor operation frequency, so that after the air conditioner is started, the target steady state valve is compensated based on the frequency difference between the second compressor operation frequency and the first compressor operation frequency, the determined initial valve opening is closer to the final steady state valve opening, and the time for adjusting the valve opening is shorter.
In some embodiments, the deriving the initial valve opening based on the target steady-state valve opening and the frequency difference comprises:
after the frequency difference value is multiplied by a preset coefficient, the product is summed with the target steady-state valve opening to obtain the initial valve opening;
the preset coefficient is a slope value obtained by performing linear fitting between the historical operating frequency of the compressor and the historical valve opening of the electronic expansion valve.
It is understood that the initial valve opening Y — INT (Y) in this embodiment 0 +a*(H 2 -H 1 ))。
Wherein INT denotes a rounding operation, Y 0 When the environment temperature of the air conditioner outdoor unit is fixed, under normal voltage (namely, steady state), the final valve opening of the electronic expansion valve corresponding to the environment temperature T of the air conditioner outdoor unit, namely, the corresponding target steady-state valve opening, a is a preset coefficient, H is 2 For the first compressor operating frequency, H 1 The second compressor operating frequency.
In some embodiments, said adjusting said electronic expansion valve based on said initial valve opening degree comprises:
and acquiring the exhaust temperature of the air conditioner, and carrying out PID (proportion integration differentiation) adjustment on the electronic expansion valve based on the exhaust temperature and the initial valve opening.
It will be appreciated that the temperature of the air conditioner exhaust may be collected by a temperature sensor on the air conditioner exhaust duct. PID regulation is a linear regulation law with proportional, integral and derivative actions.
In some embodiments, as shown in fig. 2, after the air conditioner is turned on, the electronic expansion valve control method detects the temperature Tao of the air conditioner external unit, and determines the steady-state valve opening Y for the temperature range where the temperature Tao of the air conditioner external unit is located 0 . Keeping steady-state valve opening Y3 minutes before starting air conditioner 0 Operating, detecting the current actual compressor operating frequency, i.e. the second compressor operating frequency H 2 Calculating its operating frequency H with the first compressor 1 The difference between the frequencies is based on the second compressor running frequency H when the air conditioner is started for 6 minutes 2 And a first compressor operating frequency H 1 And determining the opening degree of the initial valve, and performing PID (proportion integration differentiation) regulation by combining the exhaust temperature of the air conditioner until the air conditioner enters a steady state.
In summary, the method for controlling an electronic expansion valve provided by the present invention includes: the method comprises the steps that under the condition that an air conditioner is started, the environment temperature of an air conditioner external unit is obtained, and the target steady-state valve opening corresponding to an electronic expansion valve and the first compressor operation frequency corresponding to the steady state of the air conditioner are determined under the environment temperature of the air conditioner external unit; adjusting the electronic expansion valve to the target steady-state valve opening degree, and acquiring the current compressor operation frequency as a second compressor operation frequency; determining an initial valve opening of the electronic expansion valve based on the target steady-state valve opening, the first compressor operating frequency, and the second compressor operating frequency to adjust the electronic expansion valve based on the initial valve opening.
After the air conditioner is started, the working voltage of the air conditioner changes from small to large until the air conditioner enters a steady state, and the frequency of the corresponding compressor changes greatly. Based on the operation frequency of the first compressor and the operation frequency of the second compressor, the change condition of the compressor frequency in the process can be preliminarily determined, after the air conditioner is started, the valve opening of the electronic expansion valve is compensated based on the change condition of the compressor frequency in the process to ensure that the initial valve opening is close to the final stable valve opening, so that the adjusting time of the electronic expansion valve can be shortened, the air conditioner can reach a stable working state in a short time, the defect of long time consumption for adjusting the electronic expansion valve in the prior art is overcome, the adjusting time of the electronic expansion valve is reduced, the problems of exhaust protection or indoor unit freezing protection caused by improper initial valve opening are avoided, and the purposes of saving energy and improving user experience are achieved.
The electronic expansion valve control device provided by the invention is described below, and the electronic expansion valve control device described below and the electronic expansion valve control method described above can be referred to correspondingly.
As shown in fig. 3, the electronic expansion valve control apparatus according to the present invention includes: the device comprises a determining module, an obtaining module and an adjusting module.
The system comprises a determining module, a judging module and a judging module, wherein the determining module is used for acquiring the ambient temperature of an air conditioner external unit in a state that the air conditioner is opened, and determining the target steady-state valve opening corresponding to an electronic expansion valve and the first compressor running frequency corresponding to the steady state of the air conditioner in the ambient temperature of the air conditioner external unit;
the acquisition module is used for adjusting the electronic expansion valve to the target steady-state valve opening degree and acquiring the current compressor operation frequency as a second compressor operation frequency;
an adjusting module, configured to determine an initial valve opening of the electronic expansion valve based on the target steady-state valve opening, the first compressor operating frequency, and the second compressor operating frequency, so as to adjust the electronic expansion valve based on the initial valve opening.
In some embodiments, the determining module is further configured to match the ambient temperature of the air conditioner external unit with a preset temperature valve opening corresponding relation table, and determine a target steady-state valve opening corresponding to the electronic expansion valve and an operating frequency of the first compressor corresponding to a steady state of the air conditioner at the ambient temperature of the air conditioner external unit;
the corresponding relation table of the opening degree of the temperature valve comprises target steady-state valve opening degrees of the electronic expansion valve corresponding to different temperature intervals.
In some embodiments, the adjustment module comprises:
a first calculation unit for determining a frequency difference between the first compressor operating frequency and the second compressor operating frequency;
and the second calculation unit is used for obtaining the initial valve opening degree based on the target steady-state valve opening degree and the frequency difference value.
In some embodiments, the second calculating unit is further configured to sum the product of the frequency difference and a preset coefficient and the target steady-state valve opening to obtain the initial valve opening;
and the preset coefficient is a slope value obtained by performing linear fitting between the historical operating frequency of the compressor and the historical valve opening of the electronic expansion valve.
In some embodiments, the adjustment module comprises:
and the adjusting unit is used for acquiring the exhaust temperature of the air conditioner and carrying out PID (proportion integration differentiation) adjustment on the electronic expansion valve based on the exhaust temperature and the initial valve opening.
In some embodiments, the obtaining module is further configured to adjust the electronic expansion valve to a maximum valve opening after the air conditioner is turned on, and obtain a current compressor operating frequency as the first compressor operating frequency.
The electronic device, the computer program product and the storage medium provided by the present invention are described below, and the electronic device, the computer program product and the storage medium described below and the electronic expansion valve control method described above may be referred to in correspondence.
Fig. 4 illustrates a physical structure diagram of an electronic device, which may include, as shown in fig. 4: a processor (processor)410, a communication Interface 420, a memory (memory)430 and a communication bus 440, wherein the processor 410, the communication Interface 420 and the memory 430 are communicated with each other via the communication bus 440. The processor 410 may invoke logic instructions in the memory 430 to perform an electronic expansion valve control method comprising:
the method comprises the steps that under the condition that an air conditioner is started, the environment temperature of an air conditioner external unit is obtained, and the target steady-state valve opening corresponding to an electronic expansion valve and the first compressor operation frequency corresponding to the steady state of the air conditioner are determined under the environment temperature of the air conditioner external unit;
adjusting the electronic expansion valve to the target steady-state valve opening degree, and acquiring the current compressor operation frequency as a second compressor operation frequency;
determining an initial valve opening of the electronic expansion valve based on the target steady-state valve opening, the first compressor operating frequency, and the second compressor operating frequency to adjust the electronic expansion valve based on the initial valve opening.
In addition, the logic instructions in the memory 430 may be implemented in the form of software functional units and stored in a computer readable storage medium when the software functional units are sold or used as independent products. 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 and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In another aspect, the present invention further provides a computer program product, the computer program product comprising a computer program, the computer program being stored on a non-transitory computer readable storage medium, wherein when the computer program is executed by a processor, the computer is capable of executing the electronic expansion valve control method provided by the above methods, the method comprising:
the method comprises the steps that under the condition that an air conditioner is started, the environment temperature of an air conditioner external unit is obtained, and the target steady-state valve opening corresponding to an electronic expansion valve and the first compressor operation frequency corresponding to the steady state of the air conditioner are determined under the environment temperature of the air conditioner external unit;
adjusting the electronic expansion valve to the target steady-state valve opening degree, and acquiring the current compressor operation frequency as a second compressor operation frequency;
determining an initial valve opening of the electronic expansion valve based on the target steady-state valve opening, the first compressor operating frequency, and the second compressor operating frequency to adjust the electronic expansion valve based on the initial valve opening.
In yet another aspect, the present invention further provides a non-transitory computer readable storage medium, on which a computer program is stored, the computer program being implemented by a processor to execute the electronic expansion valve control method provided by the above methods, the method comprising:
the method comprises the steps that under the condition that an air conditioner is started, the environment temperature of an air conditioner external unit is obtained, and the target steady-state valve opening corresponding to an electronic expansion valve and the first compressor operation frequency corresponding to the steady state of the air conditioner are determined under the environment temperature of the air conditioner external unit;
adjusting the electronic expansion valve to the target steady-state valve opening degree, and acquiring the current compressor operation frequency as a second compressor operation frequency;
determining an initial valve opening of the electronic expansion valve based on the target steady-state valve opening, the first compressor operating frequency, and the second compressor operating frequency to adjust the electronic expansion valve based on the initial valve opening.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. An electronic expansion valve control method, comprising:
acquiring the environment temperature of an air conditioner external unit in a state that the air conditioner is opened, and determining the target steady-state valve opening corresponding to the electronic expansion valve and the first compressor operation frequency corresponding to the air conditioner steady state in the environment temperature of the air conditioner external unit;
adjusting the electronic expansion valve to the target steady-state valve opening degree, and acquiring the current compressor operation frequency as a second compressor operation frequency;
determining an initial valve opening of the electronic expansion valve based on the target steady-state valve opening, the first compressor operating frequency, and the second compressor operating frequency to adjust the electronic expansion valve based on the initial valve opening.
2. The method as claimed in claim 1, wherein the determining the target steady-state valve opening corresponding to the electronic expansion valve and the first compressor operating frequency corresponding to the steady state of the air conditioner at the ambient temperature of the outdoor unit of the air conditioner comprises:
matching the environment temperature of the air conditioner external unit with a preset relation table, and determining the target steady-state valve opening corresponding to the electronic expansion valve and the first compressor operation frequency corresponding to the air conditioner steady state at the environment temperature of the air conditioner external unit;
the relation table comprises target steady-state valve opening degrees of the electronic expansion valves corresponding to different temperature intervals and compressor operation frequency under the steady state of the air conditioner.
3. The electronic expansion valve control method of claim 1, wherein determining an initial valve opening degree for the electronic expansion valve based on the target steady-state valve opening degree, the first compressor operating frequency, and the second compressor operating frequency comprises:
determining a frequency difference between the second compressor operating frequency and the first compressor operating frequency;
and obtaining the initial valve opening based on the target steady-state valve opening and the frequency difference.
4. The electronic expansion valve control method of claim 3, wherein the deriving the initial valve opening based on the target steady-state valve opening and the frequency difference comprises:
after the frequency difference value is multiplied by a preset coefficient, the product is summed with the target steady-state valve opening to obtain the initial valve opening;
and the preset coefficient is a slope value obtained by performing linear fitting between the historical operating frequency of the compressor and the historical valve opening of the electronic expansion valve.
5. The electronic expansion valve control method of any of claims 1-4, wherein adjusting the electronic expansion valve based on the initial valve opening degree comprises:
and acquiring the exhaust temperature of the air conditioner, and carrying out PID (proportion integration differentiation) adjustment on the electronic expansion valve based on the exhaust temperature and the initial valve opening.
6. An electronic expansion valve control apparatus, comprising:
the system comprises a determining module, a judging module and a judging module, wherein the determining module is used for acquiring the ambient temperature of an air conditioner external unit in a state that the air conditioner is opened, and determining the target steady-state valve opening corresponding to an electronic expansion valve and the first compressor running frequency corresponding to the steady state of the air conditioner in the ambient temperature of the air conditioner external unit;
the acquisition module is used for adjusting the electronic expansion valve to the target steady-state valve opening degree and acquiring the current compressor operation frequency as a second compressor operation frequency;
an adjustment module to determine an initial valve opening of the electronic expansion valve based on the target steady-state valve opening, the first compressor operating frequency, and the second compressor operating frequency to adjust the electronic expansion valve based on the initial valve opening.
7. An air conditioner characterized by comprising the electronic expansion valve control device according to claim 6.
8. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor, when executing the program, implements the electronic expansion valve control method according to any one of claims 1 to 5.
9. A non-transitory computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the electronic expansion valve control method according to any one of claims 1 to 5.
10. A computer program product comprising a computer program, wherein the computer program, when executed by a processor, implements the air conditioning control method according to any one of claims 1 to 5.
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| CN202210571743.9A CN115076867A (en) | 2022-05-24 | 2022-05-24 | Electronic expansion valve control method and device, air conditioner and electronic equipment |
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| CN202210571743.9A CN115076867A (en) | 2022-05-24 | 2022-05-24 | Electronic expansion valve control method and device, air conditioner and electronic equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115560448A (en) * | 2022-10-14 | 2023-01-03 | 宁波奥克斯电气股份有限公司 | Air conditioner control method and device, air conditioner and computer readable storage medium |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115560448A (en) * | 2022-10-14 | 2023-01-03 | 宁波奥克斯电气股份有限公司 | Air conditioner control method and device, air conditioner and computer readable storage medium |
| CN115560448B (en) * | 2022-10-14 | 2023-06-09 | 宁波奥克斯电气股份有限公司 | Air conditioner control method, device, air conditioner and computer readable storage medium |
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