CN110926064B - Control method and device of electronic expansion valve, electronic equipment and storage medium - Google Patents
Control method and device of electronic expansion valve, electronic equipment and storage medium Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000004364 calculation method Methods 0.000 claims description 49
- 238000005057 refrigeration Methods 0.000 claims description 34
- 238000004590 computer program Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 6
- 238000009825 accumulation Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims 1
- 239000004065 semiconductor Substances 0.000 description 6
- 230000001960 triggered effect Effects 0.000 description 4
- 238000004422 calculation algorithm Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 235000012431 wafers Nutrition 0.000 description 2
- 101000969770 Homo sapiens Myelin protein zero-like protein 2 Proteins 0.000 description 1
- 102100021272 Myelin protein zero-like protein 2 Human genes 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
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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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21151—Temperatures of a compressor or the drive means therefor at the suction side of the compressor
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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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the compressor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention provides a control method and device of an electronic expansion valve, electronic equipment and a storage medium. The control method comprises the following steps: acquiring an actual temperature value of a controlled object, an air suction temperature value and an air exhaust temperature value of a compressor; determining the output percentage of the refrigerating capacity according to the actual temperature value and the target temperature value of the controlled object; and calculating the opening degree of the electronic expansion valve according to the target temperature value, the refrigerating output percentage, the air suction temperature value and the exhaust temperature value. According to the invention, the opening degree of the electronic expansion valve is calculated through the target temperature value, the refrigerating output percentage, the air suction temperature value and the exhaust temperature value, so that the opening degree of the electronic expansion valve can be automatically controlled to meet the operation in a high-temperature and low-temperature range. Meanwhile, the running requirements of the high-low temperature interval on different refrigerating output of the return load can be met. In addition, the control of the electronic expansion valve can control the air suction temperature and the air discharge temperature, and the air suction temperature and the air discharge temperature are in a proper range, so that the reliable operation of the system is ensured.
Description
Technical Field
The present invention relates to the field of refrigeration systems, and in particular, to a method and an apparatus for controlling an electronic expansion valve, an electronic device, and a storage medium.
Background
The semiconductor temperature control device is used as an auxiliary device for producing semiconductors, different temperatures are required to be output in the process of manufacturing wafers, and the cooling capacity is required to be controlled in the process of maintaining the temperatures so as to offset the heat load in the process. Therefore, the semiconductor temperature control device needs to maintain a constant output temperature in an actual process, and needs to ensure sufficient refrigerating capacity while meeting the high and low temperature working conditions. Meanwhile, the requirements of the wafer production process should be met under the condition of ensuring the stable and reliable operation of the system.
Disclosure of Invention
Technical problem to be solved
The present invention is directed to solve at least one of the problems of the prior art, and therefore an object of the present invention is to provide a method and an apparatus for controlling an opening adjustment of an electronic expansion valve of a refrigeration system.
(II) technical scheme
In order to solve the above technical problem, the present invention provides a method for controlling an opening degree adjustment of an electronic expansion valve of a refrigeration system, comprising the steps of: acquiring an actual temperature value of a controlled object, an air suction temperature value and an air exhaust temperature value of a compressor; determining the output percentage of the refrigerating capacity according to the actual temperature value and the target temperature value of the controlled object; and calculating the opening degree of the electronic expansion valve according to the target temperature value, the refrigerating capacity output percentage, the air suction temperature value and the exhaust temperature value.
Further, the method also comprises the following steps: calculating the minimum opening value and the maximum opening value of the electronic expansion valve through automatic calculation logic, and obtaining an automatic opening value based on the minimum opening value and the maximum opening value; calculating a correction opening value of the electronic expansion valve through correction calculation logic; and obtaining an actual opening value based on the automatic opening value and the corrected opening value.
The automatic calculation logic further includes dividing the target temperature value into a plurality of temperature value intervals, calculating a minimum opening value and a maximum opening value of the electronic expansion valve corresponding to each temperature value interval, setting a first temperature threshold and an intermediate refrigeration calculated quantity percentage, wherein the intermediate refrigeration calculated quantity percentage is equal to the refrigeration quantity output percentage when the target temperature value is greater than or equal to the first temperature threshold, the intermediate refrigeration calculated quantity percentage is 100% -the refrigeration quantity output percentage when the target temperature value is less than the first temperature threshold, and the automatic opening value is equal to the intermediate refrigeration calculated quantity percentage × (the maximum opening value-the minimum opening value) + the minimum opening value.
Further, the correction calculation logic includes: setting a second temperature threshold, and accumulating correction values at preset time intervals when the target temperature value is greater than or equal to the first temperature threshold and the air suction temperature value is greater than or equal to the second temperature threshold; setting a third temperature threshold, and accumulating correction values at preset time intervals when the target temperature value is less than the first temperature threshold and the exhaust temperature value is greater than or equal to the third temperature threshold; setting a fourth temperature threshold, and when the target temperature value is greater than or equal to the first temperature threshold and the air suction temperature value is less than the fourth temperature threshold, spacing preset time and accumulating and reducing a correction value; the correction opening value is an accumulation of correction values or a subtraction of correction values.
Further, when the correction opening value is equal to a correction value, the intake air temperature value is between the second temperature threshold and the fourth temperature threshold, and the exhaust air temperature value is less than a third temperature threshold.
The step of obtaining an actual opening value based on the automatic opening value and the corrected opening value includes obtaining the actual opening value as the percentage × of the intermediate cooling calculated amount (the maximum opening value-the minimum opening value) + the minimum opening value + the corrected opening value.
According to another aspect of the present invention, there is provided a control apparatus for electronic expansion valve opening degree adjustment of a refrigeration system, comprising: the acquisition module is used for acquiring the actual temperature value of the controlled object, the air suction temperature value and the air discharge temperature value of the compressor; the refrigerating capacity output percentage calculation module is used for determining the refrigerating capacity output percentage according to the actual temperature value and the target temperature value of the controlled object; and the calculating module is used for calculating the opening degree of the electronic expansion valve according to the target temperature value, the refrigerating capacity output percentage, the air suction temperature value and the exhaust temperature value.
Further, the calculation module comprises an automatic calculation module, a correction calculation module and an actual calculation module, wherein the automatic calculation module calculates the minimum opening value and the maximum opening value of the electronic expansion valve through automatic calculation logic, and obtains an automatic opening value based on the minimum opening value and the maximum opening value; the correction calculation module calculates a correction opening value of the electronic expansion valve through correction calculation logic; and the actual calculation module obtains an actual opening value based on the automatic opening value and the correction opening value.
According to another aspect of the present invention, there is provided an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the control method as described in any one of the preceding claims when executing the program.
According to another aspect of the invention, a non-transitory computer readable storage medium is provided, having stored thereon a computer program which, when executed by a processor, implements the steps of the control method according to any one of the preceding claims.
(III) advantageous effects
According to the control method for adjusting the opening degree of the electronic expansion valve of the refrigeration system, the opening degree of the electronic expansion valve is calculated according to the target temperature value, the refrigerating capacity output percentage, the air suction temperature value and the exhaust temperature value, and the opening degree of the electronic expansion valve can be automatically controlled to meet the operation in a high-temperature and low-temperature range. Meanwhile, the running requirements of the high-low temperature interval on different refrigerating output of the return load can be met. In addition, the control of the electronic expansion valve can control the air suction temperature and the air discharge temperature, and the air suction temperature and the air discharge temperature are in a proper range, so that the reliable operation of the system is ensured.
Drawings
FIG. 1 is a schematic flow chart of an algorithm for an automatic opening value provided by an embodiment of the present invention;
FIG. 2 is a schematic flow chart of an algorithm for correcting an opening value according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a control device for electronic expansion valve opening degree adjustment of a refrigeration system according to an embodiment of the present invention;
FIG. 4 is a schematic graph of an opening value and an actual temperature value of the electronic expansion valve at a target temperature value of-42.55 ℃;
fig. 5 is a schematic graph of an opening degree value and an actual temperature value of the electronic expansion valve when the target temperature value is 37.45 ℃.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 3 in combination, the present invention provides a method for controlling an opening adjustment of an electronic expansion valve of a refrigeration system, comprising the following steps: acquiring an actual temperature value of a controlled object, an air suction temperature value and an air exhaust temperature value of a compressor; determining the output percentage of the refrigerating capacity according to the actual temperature value and the target temperature value of the controlled object; and calculating the opening degree of the electronic expansion valve according to the target temperature value, the refrigerating output percentage, the air suction temperature value and the exhaust temperature value.
According to the control method for adjusting the opening degree of the electronic expansion valve of the refrigeration system, the opening degree of the electronic expansion valve is calculated according to the target temperature value, the refrigerating capacity output percentage, the air suction temperature value and the exhaust temperature value, and the opening degree of the electronic expansion valve can be automatically controlled to meet the operation in a high-temperature and low-temperature range. Meanwhile, the running requirements of the high-low temperature interval on different refrigerating output of the return load can be met. In addition, the control of the electronic expansion valve can control the air suction temperature and the air discharge temperature, and the air suction temperature and the air discharge temperature are in a proper range, so that the reliable operation of the system is ensured.
Specifically, the method for controlling the opening adjustment of the electronic expansion valve of the refrigeration system provided in the embodiment of the present invention generally requires four steps to implement: calculating the output percentage of the refrigerating capacity according to the actual temperature value and the target temperature value of the controlled object; calculating the automatic opening value of the electronic expansion valve through automatic calculation logic; calculating a correction opening value of the electronic expansion valve through correction calculation logic; and calculating the actual opening value of the electronic expansion valve through the opening calculation value.
Taking the target temperature value of-45 ℃ to 40 ℃ as an example; firstly, when calculating the output percentage of the refrigerating capacity, presetting a target temperature value and acquiring an actual temperature value of a controlled object of a refrigerating system; for example, a temperature sensor may be used to obtain an actual temperature value of a controlled object of the refrigeration system.
The target temperature value and the actual temperature value are input into P L C, the PID module in P L C can obtain the output percentage of the refrigerating capacity required by the semiconductor temperature control device through calculating the target temperature value and the actual temperature value, the range of the output percentage of the refrigerating capacity is 0-100%, wherein the output percentage of the refrigerating capacity is the percentage of the refrigerating capacity required to be output under the current actual temperature value and the working condition, and the output percentage of the refrigerating capacity is automatically calculated by the PID module in P L C according to the actual temperature value and the target temperature value.
After the output refrigerating capacity required by the semiconductor temperature control device is calculated, the automatic opening degree of the electronic expansion valve needs to be calculated through automatic calculation logic.
Specifically, the minimum opening value, the maximum opening value and the automatic opening value of the electronic expansion valve need to be calculated through automatic calculation logic. The automatic calculation logic comprises the steps of dividing a target temperature value into a plurality of temperature value intervals, and calculating the minimum opening value and the maximum opening value of the electronic expansion valve corresponding to each temperature value interval respectively; for example, in the whole temperature range of-45 ℃ to 40 ℃, the temperature range of the semiconductor temperature control device is divided into a plurality of temperature value intervals by taking a fixed temperature as an interval. The minimum opening degree and the maximum opening degree corresponding to the electronic expansion valve in different temperature value intervals are shown in the following table.
Taking the temperature value interval of 10 ℃ as an example, the minimum opening degree and the maximum opening degree corresponding to the electronic expansion valve are shown in the following table: (opening degree value in%)
In addition, the difference of the influence of the electronic expansion valve on the refrigerating capacity in a high-temperature state and a low-temperature state is considered, the refrigerating capacity is reduced by increasing the opening degree of the electronic expansion valve at low temperature, the opening degree of the electronic expansion valve is required to be increased when the refrigerating capacity is increased at high temperature, and the air suction temperature value of a compressor in the refrigerating system is ensured to be in a proper range so as to ensure the refrigerating capacity.
The automatic opening degree of the electronic expansion valve is controlled to be in direct proportion or inverse proportion to the output refrigerating capacity by setting the first temperature threshold value and the percentage of the calculated intermediate refrigerating capacity.
As shown in fig. 1, when the target temperature value is greater than or equal to the first temperature threshold, the percentage of the intermediate refrigeration calculated quantity is equal to the percentage of the refrigeration quantity output;
when the target temperature value is less than the first temperature threshold value, the calculated quantity percentage of the intermediate refrigeration is 100 percent to the output percentage of the refrigeration quantity;
from this, the automatic opening value of the electronic expansion valve is obtained as the percentage of the calculated amount of intermediate cooling × (maximum opening value-minimum opening value) + minimum opening value.
And after the automatic opening value of the electronic expansion valve is calculated, calculating the corrected opening value of the electronic expansion valve through correction calculation logic.
When the correction opening value is calculated through the correction calculation logic, a second temperature threshold, a third temperature threshold and a fourth temperature threshold are required to be set;
as shown in fig. 2, when the target temperature value is greater than or equal to the first temperature threshold and the inspiration temperature value is greater than or equal to the second temperature threshold, an increase flag is triggered, and the correction values are accumulated at intervals of a preset time, for example, 1 second;
when the target temperature value is smaller than the first temperature threshold value and the exhaust temperature value is larger than or equal to the third temperature threshold value, triggering an increase mark, and accumulating correction values at preset time intervals, such as 1 second;
when the target temperature value is larger than or equal to the first temperature threshold value and the inspiration temperature value is smaller than the fourth temperature threshold value, triggering a reduction mark, and accumulating the correction value at preset time intervals, such as 1 second;
in addition, a fifth temperature threshold value can be set, when the target temperature value is greater than or equal to the first temperature threshold value and the air suction temperature value is greater than or equal to the fifth temperature threshold value, a rapid increase mark is triggered, the correction values are accumulated at preset time intervals, for example, 1 second;
a sixth temperature threshold value can be set, when the target temperature value is less than the first temperature threshold value and the exhaust temperature value is greater than or equal to the sixth temperature threshold value, a rapid increase mark is triggered, the correction values are accumulated at preset time intervals, for example, 1 second;
and a seventh temperature threshold value can be set, when the target temperature value is greater than or equal to the first temperature threshold value and the inspiration temperature value is less than the seventh temperature threshold value, a rapid reduction mark is triggered, and the correction value is reduced at preset time intervals, for example 1 second.
Wherein the fifth temperature threshold is greater than the second temperature threshold; the sixth temperature threshold is greater than the third temperature threshold; the seventh temperature threshold is less than the fourth temperature threshold.
Finally, the corrected opening degree value is obtained as the accumulation of the corrected values or the accumulation of the corrected values, the air suction temperature value is controlled to be between the second temperature threshold and the fourth temperature threshold through the corrected opening degree of the electronic expansion valve, and the exhaust temperature value is controlled to be smaller than the third temperature threshold.
After the automatic opening value and the corrected opening value are calculated, the opening value of the electronic expansion valve can be calculated according to the following formula:
the actual opening value is the percentage of the calculated amount of intermediate cooling × (maximum opening value-minimum opening value) + minimum opening value + corrected opening value.
The initial value of the correction value is 0, and different correction values are calculated according to corresponding conditions so as to calculate the correction opening value.
In other words, the automatic opening value and the corrected opening value in the embodiment of the invention are changed in real time according to the actual temperature value and the actual working condition, so that the opening calculation of the electronic expansion valve is also changed in real time, and the opening of the electronic expansion valve is further controlled in real time.
As shown in fig. 4 and 5, when the target temperature value indicating line 3 is always controlled at-42.55 ℃, the actual temperature value curve 2 is controlled between-42.4 ℃ and-42.6 ℃, and the opening degree value curve 1 of the electronic expansion valve is controlled between 3.1 and 3.7; when the target temperature value indicating line 3 is always controlled at 37.45 ℃, the actual temperature value curve 2 is controlled between 37.35 ℃ and 37.55 ℃, and the opening value curve 1 of the electronic expansion valve is controlled between 18 and 21.
According to another aspect of the present invention, there is also provided a control apparatus for electronic expansion valve opening degree adjustment of a refrigeration system, comprising: the acquisition module is used for acquiring the actual temperature value of the controlled object, the air suction temperature value and the air discharge temperature value of the compressor; the refrigerating capacity output percentage calculation module is used for determining the refrigerating capacity output percentage according to the actual temperature value and the target temperature value of the controlled object; and the calculating module is used for calculating the opening degree of the electronic expansion valve according to the target temperature value, the refrigerating output percentage, the air suction temperature value and the exhaust temperature value.
The calculation module comprises an automatic calculation module, a correction calculation module and an actual calculation module, wherein the automatic calculation module calculates the minimum opening value and the maximum opening value of the electronic expansion valve through automatic calculation logic and obtains an automatic opening value based on the minimum opening value and the maximum opening value; the correction calculation module calculates the correction opening value of the electronic expansion valve through correction calculation logic; the actual calculation module obtains an actual opening value based on the automatic opening value and the correction opening value.
In other words, the control device for adjusting the opening degree of the electronic expansion valve of the refrigeration system according to the embodiment of the present invention corresponds to the control method for adjusting the opening degree of the electronic expansion valve of the refrigeration system. That is, the technical effects that can be achieved by the control method for adjusting the opening degree of the electronic expansion valve of the refrigeration system in the foregoing embodiments can also be achieved by the control device for adjusting the opening degree of the electronic expansion valve of the refrigeration system, which is not described herein again.
Specifically, as shown in fig. 3, the PCW service water is on the left, the circulation system is on the right, and the refrigeration system is in the middle. The hardware of the refrigeration system mainly comprises a COMP1 compressor, an INV power inverter, a CON1 condenser, an EEV1 main loop electronic expansion valve, an EVA1 evaporator, an HE1 heat regenerator, an EEV2 hot gas bypass electronic expansion valve, an EEV3 cold bypass electronic expansion valve, an EEV4 liquid spraying electronic expansion valve, an SV3 hot bypass, a PS1 exhaust pressure sensor, a PS2 suction pressure sensor, a TS1 exhaust temperature sensor, a TS2 evaporation temperature sensor and a TS3 suction temperature sensor. In which the external part of the circulation system is connected with a load, the control device for adjusting the opening degree of the electronic expansion valve of the refrigeration system needs to control the actual temperature value (namely, the temperature value at TS 6) to be maintained in a certain temperature range.
Further, embodiments of the present invention disclose a computer program product comprising a computer program stored on a non-transitory computer-readable storage medium, the computer program comprising program instructions, which, when executed by a computer, enable the computer to perform the methods provided by the above-mentioned method embodiments.
In another aspect, an embodiment of the present invention further provides a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program is implemented by a processor to execute the transmission method provided in the foregoing embodiments.
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 place, or may be distributed on a plurality of 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.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. A control method for regulating the opening degree of an electronic expansion valve of a refrigerating system is characterized by comprising the following steps:
acquiring an actual temperature value of a controlled object, an air suction temperature value and an air exhaust temperature value of a compressor;
determining the output percentage of the refrigerating capacity according to the actual temperature value and the target temperature value of the controlled object;
calculating the opening degree of an electronic expansion valve according to the target temperature value, the refrigerating capacity output percentage, the air suction temperature value and the exhaust temperature value;
calculating the minimum opening value and the maximum opening value of the electronic expansion valve through automatic calculation logic, and obtaining an automatic opening value based on the minimum opening value and the maximum opening value;
calculating a correction opening value of the electronic expansion valve through correction calculation logic;
obtaining an actual opening value based on the automatic opening value and the corrected opening value; the automatic computation logic comprises:
dividing the target temperature value into a plurality of temperature value intervals, and respectively calculating the minimum opening value and the maximum opening value of the electronic expansion valve corresponding to each temperature value interval;
setting a first temperature threshold value and an intermediate refrigeration calculated quantity percentage, wherein when the target temperature value is greater than or equal to the first temperature threshold value, the intermediate refrigeration calculated quantity percentage is equal to the refrigeration quantity output percentage, and when the target temperature value is less than the first temperature threshold value, the intermediate refrigeration calculated quantity percentage = 100% -refrigeration quantity output percentage;
the auto opening value = percentage of intermediate cooling calculation × (the maximum opening value-the minimum opening value) + the minimum opening value, the correction calculation logic includes:
setting a second temperature threshold, and accumulating correction values at preset time intervals when the target temperature value is greater than or equal to the first temperature threshold and the air suction temperature value is greater than or equal to the second temperature threshold;
setting a third temperature threshold, and accumulating correction values at preset time intervals when the target temperature value is less than the first temperature threshold and the exhaust temperature value is greater than or equal to the third temperature threshold;
setting a fourth temperature threshold, and when the target temperature value is greater than or equal to the first temperature threshold and the air suction temperature value is less than the fourth temperature threshold, spacing preset time and accumulating and reducing a correction value;
the correction opening value = an accumulation of correction values or a subtraction of correction values.
2. The method of claim 1, wherein the suction temperature value is between the second temperature threshold and the fourth temperature threshold, and the discharge temperature value is less than a third temperature threshold when the corrected opening value is constant.
3. The method of claim 1, wherein the step of deriving an actual opening value based on the automatic opening value and the corrected opening value comprises:
the actual opening = the percentage of intermediate cooling calculation × (the maximum opening-the minimum opening) + the minimum opening + a correction opening).
4. A control device for implementing a control method for electronic expansion valve opening degree adjustment of a refrigeration system according to any one of claims 1 to 3, characterized by comprising:
the acquisition module is used for acquiring the actual temperature value of the controlled object, the air suction temperature value and the air discharge temperature value of the compressor;
the refrigerating capacity output percentage calculation module is used for determining the refrigerating capacity output percentage according to the actual temperature value and the target temperature value of the controlled object;
the calculation module is used for calculating the opening degree of the electronic expansion valve according to the target temperature value, the refrigerating capacity output percentage, the air suction temperature value and the exhaust temperature value;
the calculation module comprises an automatic calculation module, a correction calculation module and an actual calculation module,
the automatic calculation module calculates the minimum opening value and the maximum opening value of the electronic expansion valve through automatic calculation logic, and obtains the automatic opening value based on the minimum opening value and the maximum opening value;
the correction calculation module calculates a correction opening value of the electronic expansion valve through correction calculation logic;
and the actual calculation module obtains an actual opening value based on the automatic opening value and the correction opening value.
5. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the control method according to any of claims 1 to 3 are implemented when the program is executed by the processor.
6. A non-transitory computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the control method according to any one of claims 1 to 3.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911258668.5A CN110926064B (en) | 2019-12-10 | 2019-12-10 | Control method and device of electronic expansion valve, electronic equipment and storage medium |
| JP2022535162A JP7389906B2 (en) | 2019-12-10 | 2020-09-27 | Electronic expansion valve control method, device, electronic device, and storage medium |
| PCT/CN2020/118177 WO2021114827A1 (en) | 2019-12-10 | 2020-09-27 | Control method and apparatus for electronic expansion valve, and electronic device and storage medium |
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| CN201911258668.5A CN110926064B (en) | 2019-12-10 | 2019-12-10 | Control method and device of electronic expansion valve, electronic equipment and storage medium |
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| CN110926064B true CN110926064B (en) | 2020-08-07 |
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| CN110926064B (en) * | 2019-12-10 | 2020-08-07 | 北京京仪自动化装备技术有限公司 | Control method and device of electronic expansion valve, electronic equipment and storage medium |
| CN111522324B (en) * | 2020-04-08 | 2021-06-22 | 北京京仪自动化装备技术股份有限公司 | Method and device for testing semiconductor temperature control device, electronic equipment and storage medium |
| CN112083742B (en) * | 2020-08-31 | 2021-10-26 | 北京京仪自动化装备技术股份有限公司 | Temperature control device, integrated circuit manufacturing equipment and method |
| CN112379704B (en) * | 2020-10-29 | 2022-02-18 | 北京京仪自动化装备技术有限公司 | Temperature control system for semiconductor production |
| CN112396763B (en) * | 2020-11-11 | 2022-03-18 | 清华大学 | Household metering and charging method and device for multi-split air conditioner |
| CN112594980A (en) * | 2020-12-18 | 2021-04-02 | 北京京仪自动化装备技术有限公司 | Refrigerating system and temperature control system |
| CN112856845A (en) * | 2021-01-25 | 2021-05-28 | 北京京仪自动化装备技术有限公司 | Wide-temperature-range temperature control device and control method thereof |
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| JP2023506167A (en) | 2023-02-15 |
| CN110926064A (en) | 2020-03-27 |
| JP7389906B2 (en) | 2023-11-30 |
| WO2021114827A1 (en) | 2021-06-17 |
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