CN107906671B - Refrigerant quantity judging method and system - Google Patents
Refrigerant quantity judging method and system Download PDFInfo
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- CN107906671B CN107906671B CN201711043147.9A CN201711043147A CN107906671B CN 107906671 B CN107906671 B CN 107906671B CN 201711043147 A CN201711043147 A CN 201711043147A CN 107906671 B CN107906671 B CN 107906671B
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Abstract
The invention provides a refrigerant quantity judging method and system, computer equipment and a computer readable storage medium, wherein the refrigerant quantity judging method is used for an air conditioner, the air conditioner comprises an indoor unit and an outdoor unit, the air conditioner is filled with refrigerants, and the refrigerant quantity judging method comprises the following steps: detecting the exhaust parameters of the outdoor unit in a refrigeration mode; judging the size relationship between the exhaust parameters and preset exhaust parameters; and determining whether the refrigerant quantity in the air conditioner reaches the standard refrigerant quantity according to the judgment result. The refrigerant quantity judging method provided by the invention can determine whether the refrigerant quantity in the air conditioner reaches the standard refrigerant quantity or not by detecting the performance parameter of the exhaust of the outdoor unit in the refrigeration mode and comparing the detected exhaust parameter with the preset exhaust parameter.
Description
Technical Field
The invention relates to the technical field of central air conditioners, in particular to a refrigerant quantity judging method, a refrigerant quantity judging system, computer equipment and a computer readable storage medium.
Background
The accuracy of the refrigerant quantity of the air conditioning system plays an important role in the safety, reliability and comfort of the system. The excessive refrigerant filling amount can cause the exhaust temperature of the compressor to be higher, and the high-temperature failure of lubricating oil is easily caused, thereby causing the serious consequence of the damage of the compressor. Meanwhile, the small amount of refrigerant in the system is the root cause of the insufficient refrigerating and heating capacity of the system, so that the air conditioning effect is not ideal and the use of customers is affected.
When the refrigerant is filled into the multi-connected air conditioning system, the refrigerant quantity is calculated according to a method specified by a manufacturer by taking the diameter and the length of a pipeline as basic data. However, because the price of the refrigerant is high, the actual charging amount is often smaller than the standard refrigerant amount, so that hidden dangers are buried for the safety and reliability of the system.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
Therefore, a first aspect of the present invention is to provide a method for determining a refrigerant quantity.
A second aspect of the present invention is to provide a refrigerant quantity determination system.
A third aspect of the present invention is directed to a computer device.
A fourth aspect of the present invention is to provide a computer-readable storage medium.
In view of the above, according to a first aspect of the present invention, there is provided a refrigerant quantity determination method for an air conditioner, the air conditioner including an indoor unit and an outdoor unit, the air conditioner being filled with a refrigerant, the refrigerant quantity determination method including: detecting the exhaust parameters of the outdoor unit in a refrigeration mode; judging the size relationship between the exhaust parameters and preset exhaust parameters; and determining whether the refrigerant quantity in the air conditioner reaches the standard refrigerant quantity according to the judgment result.
The refrigerant quantity judging method provided by the invention can determine whether the refrigerant quantity in the air conditioner reaches the standard refrigerant quantity or not by detecting the performance parameter of the exhaust of the outdoor unit in the refrigeration mode and comparing the detected exhaust parameter with the preset exhaust parameter. The method has the advantages that the heat exchange load of the unit refrigerant is increased when the refrigerant quantity is insufficient, the heat exchange load of the unit refrigerant can be directly reflected on the physical performance parameters of the outdoor unit exhaust, the preset exhaust parameters obtained by summarizing experimental data can reflect the exhaust state of the outdoor unit of the air conditioner when the refrigerant charge quantity reaches the standard refrigerant quantity, the relationship between the refrigerant quantity in the current air conditioner and the standard refrigerant quantity can be correspondingly reflected by fully detecting the exhaust condition of the current outdoor unit and comparing the exhaust condition with the preset exhaust parameters, the detection result is reliable, the problem of insufficient accuracy of the judgment result is solved, the purposes of ensuring the safety and reliability of the air conditioning system and improving the user experience are achieved. In addition, only the exhaust of the outdoor unit is used as the detection object, and the sensors can be intensively arranged at the exhaust port of the outdoor unit, so that the detection is easy, and the maintenance and the overhaul of the sensors are convenient.
In addition, according to the refrigerant quantity determination method in the above technical solution provided by the present invention, the following additional technical features may be further provided:
in the foregoing technical solution, preferably, the step of determining a magnitude relationship between the exhaust parameter and a preset exhaust parameter includes: calculating the difference between the exhaust parameter and a preset exhaust parameter as an exhaust deviation value; and judging the relation between the exhaust deviation amount and a preset deviation amount.
In the technical scheme, the deviation amount of the exhaust parameter relative to the preset exhaust parameter is calculated firstly, then the exhaust deviation amount is compared with the preset deviation amount, and compared with a scheme of directly comparing the magnitude relation of the exhaust parameter and the preset exhaust parameter, the difference condition of the exhaust parameter and the preset exhaust parameter can be reflected visually, and the accuracy of a judgment result is improved; compared with the scheme of comparing the exhaust parameters with the preset exhaust parameters by means of an empirical formula, the calculation process is simpler, the calculation pressure is reduced, and the probability of calculation errors is greatly reduced.
In any of the above technical solutions, preferably, the exhaust parameters include exhaust pressure P, exhaust temperature Tp and exhaust superheat SH; the preset exhaust parameters comprise a preset exhaust pressure P0Preset exhaust temperature Tp0And preset exhaust superheat SH0The exhaust offset comprises an exhaust offset △P＝P-P0Exhaust gas temperature deviation △ Tp-Tp0And the exhaust superheat deviation △ SH-SH0。
In the technical scheme, the pressure, the temperature and the superheat degree of the outdoor unit exhaust gas are selected as exhaust parameters to be detected, so that the detection accuracy can be improved. When the refrigerant quantity is lower than the standard refrigerant quantity, various physical performance parameters of outdoor unit exhaust, particularly pressure, temperature and superheat degree, can be caused to change due to the increase of heat exchange load of unit refrigerant, and the three are brought into a judgment standard at the same time, so that the problem of high error in the process of detecting a single parameter can be avoided, and the detection result is more reliable.
In any of the above technical solutions, preferably, the preset deviation includes a preset pressure deviation A, a first preset temperature deviation B1, a second preset temperature deviation B2, a first preset superheat deviation C1 and a second preset superheat deviation C2, wherein 0 is greater than A, B1 is greater than B2, and C1 is greater than C2, the operation of judging the magnitude relation between the exhaust deviation and the preset deviation is specifically that the exhaust deviation is subjected to condition judgment, and the step of determining whether the refrigerant quantity in the air conditioner reaches the standard quantity specifically includes that a condition I is that △ P is less than or equal to A, a condition II is that △ P is greater than A and △ Tp is greater than or equal to B1, a condition III is that △ P is greater than A and △ SH is greater than or equal to 3984, a condition IV is that Tp is greater than or equal to B2 and C1 is greater than or equal to C2, and the step of determining whether the refrigerant quantity in the air conditioner reaches the standard quantity when the ratio between the first condition I and the second refrigerant quantity is greater than or less than the ratio of the second refrigerant quantity, and the ratio between the second refrigerant quantity is less than or equal to the second refrigerant quantity, and the refrigerant quantity is less than or equal to the ratio of the second refrigerant.
According to the technical scheme, corresponding preset deviation amounts are set for the discharge pressure P, the discharge temperature Tp and the discharge superheat SH, and are respectively compared, the ratio of the refrigerant amount to the standard refrigerant amount can be obtained, the accuracy of a judgment result is improved, the refrigerant amount is divided into three levels by means of a first ratio and a second ratio, the refrigerant amount is respectively corresponding to the serious shortage of the refrigerant amount, the shortage of the refrigerant amount and the slight shortage or sufficiency of the refrigerant amount, when the refrigerant amount is lower than the standard refrigerant amount, the discharge pressure of an outdoor unit is reduced, the discharge temperature and the discharge superheat are increased, the change is larger as the refrigerant amount is smaller, the discharge pressure deviation amount △ P can be divided into two intervals by means of a preset pressure A, when the refrigerant amount is lower than the standard refrigerant amount, the discharge pressure deviation amount △ Tp can be divided into three intervals by means of a first preset deviation temperature deviation amount B1 and a second deviation amount B2, the discharge temperature deviation amount C1 and a second deviation amount C2 can divide the discharge pressure deviation amount △ deviation amount into three intervals of a deviation amounts, when the discharge pressure deviation amount C8652 is too low, the discharge pressure deviation amount is smaller than the discharge pressure deviation amount, the discharge pressure deviation amount C9, the discharge pressure deviation amount is determined, the discharge pressure deviation amount is smaller than the discharge pressure deviation amount, the highest deviation amount is determined as the discharge pressure deviation amount is smaller than the discharge pressure deviation amount A, the discharge pressure deviation amount is smaller than the discharge pressure deviation amount, the discharge pressure deviation amount A is determined, the highest deviation amount A, the discharge pressure deviation amount is determined, the discharge pressure deviation amount is smaller, the discharge pressure deviation amount is determined as the discharge pressure deviation amount A is smaller, the discharge pressure deviation amount is larger than the SH, the discharge pressure deviation amount, the maximum deviation amount, the discharge pressure deviation amount A is determined when the discharge pressure deviation amount A is smaller, the discharge pressure deviation amount, the discharge.
In any of the above technical solutions, preferably, before the operation of detecting the discharge parameter of the outdoor unit, the method further includes: and judging whether the continuous operation time of the air conditioner reaches the preset time.
In the technical scheme, after the air conditioner continuously operates for a preset time, the air conditioning system enters a stable circulation state, and the exhaust parameters are detected, so that the error of the detection value can be reduced, and the accuracy of the judgment result is improved.
In any of the above technical solutions, preferably, before the operation of detecting the discharge parameter of the outdoor unit, the method further includes: and judging whether the outdoor environment temperature T1 and the indoor environment temperature T2 meet the conditions that the temperature is between minus 5 ℃ and T1 and between 54 ℃ and between 18 ℃ and T2 and between 32 ℃.
In the technical scheme, experiments prove that the judgment method defined by the invention is effective in the environment temperature range, so that whether the environment temperature is in the temperature range is judged before the exhaust parameters of the outdoor unit are detected, and the accuracy of the judgment result is ensured.
In any of the above technical solutions, preferably, when the air conditioner is a multi-split air conditioner, before the operation of detecting the discharge parameter of the outdoor unit, the method further includes: and judging whether all the indoor units are started.
In the technical scheme, when the air conditioner is a multi-connected air conditioner, the standard refrigerant quantity is the refrigerant quantity required when all the indoor units are in the running state, so that for the multi-connected air conditioner, all the indoor units are required to be started before detection, the refrigerant quantity required by the running air conditioner can be ensured to be consistent with the standard refrigerant quantity, the judgment failure caused by the reduction of the refrigerant demand when part of the indoor units run is avoided, and the accuracy of the judgment result is improved.
According to a second aspect of the present invention, there is provided a refrigerant quantity determination system for an air conditioner including an indoor unit and an outdoor unit, the air conditioner being filled with a refrigerant, the refrigerant quantity determination system comprising: the detection module is used for detecting the exhaust parameters of the outdoor unit in the refrigeration mode; the first judgment module is used for judging the size relationship between the exhaust parameters and preset exhaust parameters; and the examining and determining module is used for determining whether the refrigerant quantity in the air conditioner reaches the standard refrigerant quantity according to the judgment result.
According to the refrigerant quantity judging system provided by the invention, the detection module detects the performance parameter of the exhaust of the outdoor unit in the refrigeration mode, the first judging module compares the detected exhaust parameter with the preset exhaust parameter, and the approval module can determine whether the refrigerant quantity in the air conditioner reaches the standard refrigerant quantity. The method has the advantages that the heat exchange load of the unit refrigerant is increased when the refrigerant quantity is insufficient, the heat exchange load of the unit refrigerant can be directly reflected on the physical performance parameters of the outdoor unit exhaust, the preset exhaust parameters obtained by summarizing experimental data can reflect the exhaust state of the outdoor unit of the air conditioner when the refrigerant charge quantity reaches the standard refrigerant quantity, the relationship between the refrigerant quantity in the current air conditioner and the standard refrigerant quantity can be correspondingly reflected by fully detecting the exhaust condition of the current outdoor unit and comparing the exhaust condition with the preset exhaust parameters, the detection result is reliable, the problem of insufficient accuracy of the judgment result is solved, the purposes of ensuring the safety and reliability of the air conditioning system and improving the user experience are achieved. In addition, only the exhaust of the outdoor unit is used as the detection object, and the sensors can be intensively arranged at the exhaust port of the outdoor unit, so that the detection is easy, and the maintenance and the overhaul of the sensors are convenient.
In addition, according to the refrigerant quantity determination system in the above technical solution provided by the present invention, the following additional technical features may be further provided:
in the foregoing technical solution, preferably, the first determining module includes: the calculating unit is used for calculating the difference between the exhaust parameter and a preset exhaust parameter as an exhaust deviation amount; and the judging unit is used for judging the relation between the exhaust deviation amount and the preset deviation amount.
In the technical scheme, the calculation unit calculates the deviation amount of the exhaust parameter relative to the preset exhaust parameter, the judgment unit compares the exhaust deviation amount with the preset deviation amount, and compared with a scheme of directly comparing the magnitude relation of the exhaust parameter with the preset exhaust parameter, the difference condition of the exhaust parameter and the preset exhaust parameter can be intuitively reflected, and the precision of the judgment result is improved; compared with the scheme of comparing the exhaust parameters with the preset exhaust parameters by means of an empirical formula, the calculation process is simpler, the calculation pressure is reduced, and the probability of calculation errors is greatly reduced.
In any of the above technical solutions, preferably, the exhaust parameters include exhaust pressure P, exhaust temperature Tp and exhaust superheat SH; the preset exhaust parameters comprise a preset exhaust pressure P0Preset exhaust temperature Tp0And preset exhaust superheat SH0The exhaust deviation comprises exhaust deviation △ P-P0Exhaust temperatureDegree deviation △ Tp-Tp0And the exhaust superheat deviation △ SH-SH0。
In the technical scheme, the pressure, the temperature and the superheat degree of the outdoor unit exhaust gas are selected as exhaust parameters to be detected, so that the detection accuracy can be improved. When the refrigerant quantity is lower than the standard refrigerant quantity, various physical performance parameters of outdoor unit exhaust, particularly pressure, temperature and superheat degree, can be caused to change due to the increase of heat exchange load of unit refrigerant, and the three are brought into a judgment standard at the same time, so that the problem of high error in the process of detecting a single parameter can be avoided, and the detection result is more reliable.
In any of the above technical solutions, preferably, the preset deviation includes a preset pressure deviation a, a first preset temperature deviation B1, a second preset temperature deviation B2, a first preset superheat deviation C1, and a second preset superheat deviation C2, where 0 > a, B1 > B2, and C1 > C2, the determining unit is specifically configured to perform conditional determination on the exhaust deviation, and includes a condition that a first condition is △ P is not more than a, a second condition is △ P > a and △ Tp B1, a third condition is △ P > a and △ SH is not less than C1, a fourth condition is △ P > a and a condition that B1 > △ Tp is not less than B2 and C1 is not less than △ C2, and the examining module is specifically configured to perform, when any of the first condition, the second condition and the third condition is satisfied, a ratio of the refrigerant to the standard quantity is smaller than or equal to the first ratio, and when the second condition is not smaller than the first ratio to the second refrigerant quantity, the second ratio to the standard quantity is smaller than the second ratio, and the second ratio is smaller than the second ratio to the second refrigerant quantity, and the second refrigerant to the standard quantity, and the refrigerant quantity is smaller than the second refrigerant quantity, and the second refrigerant ratio to the second refrigerant quantity is smaller than the first ratio to the second refrigerant quantity.
According to the technical scheme, corresponding preset deviation amounts are set for the exhaust pressure P, the exhaust temperature Tp and the exhaust superheat SH, and are compared by a judgment unit respectively, the examining module can obtain the ratio of the refrigerant amount to the standard refrigerant amount, so that the precision of a judgment result is improved, the examining module divides the refrigerant amount into three levels by means of a first ratio and a second ratio, the three levels correspond to the serious shortage of the refrigerant amount, the shortage of the refrigerant amount and the slight shortage or the sufficiency of the refrigerant amount, when the refrigerant amount is lower than the standard refrigerant amount, the exhaust pressure is reduced, the exhaust temperature and the exhaust superheat are increased, the refrigerant amount is less and the change is larger, the judgment unit divides the exhaust pressure deviation amount △ P into two intervals by means of a preset pressure deviation amount A, the exhaust temperature deviation amount △ into three intervals by means of a first preset temperature deviation amount B1 and a second preset temperature deviation amount B2, the exhaust temperature deviation amount C1 and the exhaust superheat deviation amount C2 can be divided into three intervals by means of a first preset deviation amount C1 and a second deviation amount C2, when the exhaust pressure deviation amount is smaller than the exhaust pressure deviation amount, the exhaust pressure deviation amount is smaller than the SH temperature deviation amount, the highest deviation amount of SH 2, the exhaust pressure deviation amount is judged as the highest deviation amount of the exhaust pressure deviation amount, the exhaust pressure deviation amount is smaller, the exhaust pressure deviation amount is judged by the highest deviation amount of the first preset pressure deviation amount of the exhaust pressure deviation amount P4624, the exhaust pressure deviation amount is judged by taking the first preset temperature deviation amount of the highest deviation amount of the exhaust pressure deviation amount of the first preset temperature deviation amount of the second preset temperature deviation amount P467, the exhaust pressure as the exhaust pressure deviation amount P467, the exhaust pressure when the exhaust pressure deviation amount of the first preset temperature deviation amount of the second preset temperature deviation amount of the exhaust pressure as the exhaust pressure deviation amount of the exhaust pressure drop interval, the exhaust pressure P9, the exhaust pressure P9.
In any of the above technical solutions, preferably, the method further includes: and the second judgment module is used for judging whether the continuous operation time of the air conditioner reaches the preset time.
In the technical scheme, after the second judging module judges that the air conditioner continuously operates for the preset time, the air conditioning system is considered to enter a stable circulation state, and the detection module detects the exhaust parameters again at the moment, so that the error of the detection value can be reduced, and the accuracy of the judgment result is improved.
In any of the above technical solutions, preferably, the method further includes: and the third judgment module is used for judging whether the outdoor environment temperature T1 and the indoor environment temperature T2 meet the conditions that the temperature is between minus 5 ℃ and T1 and between 54 ℃ and between 18 ℃ and T2 and between 32 ℃.
In the technical scheme, experiments prove that the judgment method defined by the invention is effective in the environment temperature range, so that the third judgment module firstly judges whether the environment temperature is in the temperature range before detecting the exhaust parameters of the outdoor unit, and the accuracy of the judgment result is favorably ensured.
In any one of the above technical solutions, preferably, when the air conditioner is a multi-split air conditioner, the air conditioner further includes: and the fourth judgment module is used for judging whether all the indoor units are started.
In the technical scheme, when the air conditioner is a multi-connected air conditioner, the standard refrigerant quantity is the refrigerant quantity required when all the indoor units are in the running state, so that for the multi-connected air conditioner, the fourth judgment module is required to ensure that all the indoor units are started before detection, the refrigerant quantity required by the running air conditioner is consistent with the standard refrigerant quantity, the judgment failure caused by the reduction of the refrigerant demand quantity when part of the indoor units run is avoided, and the accuracy of the judgment result is improved.
According to a third aspect of the present invention, there is provided a computer device, comprising a memory, a processor and a computer program stored in the memory and operable on the processor, wherein the processor implements the steps of the method for determining the amount of refrigerant according to any of the above-mentioned technical solutions when executing the computer program.
The computer device provided by the present invention can implement the refrigerant quantity determination method according to any one of the above technical solutions when the processor executes the computer program, and thus has all the technical effects of the refrigerant quantity determination method according to any one of the above technical solutions, and details thereof are not repeated herein.
According to a fourth aspect of the present invention, there is provided a computer-readable storage medium, on which a computer program is stored, wherein the computer program, when executed by a processor, implements the steps of the method for determining the amount of refrigerant according to any of the above technical solutions.
The computer-readable storage medium provided by the present invention can implement the refrigerant quantity determination method according to any one of the above technical solutions when the computer program is executed by the processor, so that the present invention has all the technical effects of the refrigerant quantity determination method according to any one of the above technical solutions, and details thereof are not repeated herein.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic flow chart illustrating a refrigerant quantity determination method according to a first embodiment of the present invention;
fig. 2 is a schematic flow chart illustrating a refrigerant quantity determination method according to a second embodiment of the present invention;
fig. 3 is a schematic flow chart illustrating a refrigerant quantity determination method according to a third embodiment of the invention;
fig. 4 is a schematic flow chart illustrating a refrigerant quantity determination method according to a fourth embodiment of the present invention;
fig. 5 is a schematic flow chart illustrating a refrigerant quantity judging method according to a fifth embodiment of the present invention;
fig. 6 is a schematic flow chart illustrating a refrigerant quantity judging method according to a sixth embodiment of the present invention;
fig. 7 is a schematic block diagram of a refrigerant quantity judging system according to a first embodiment of the present invention;
fig. 8 is a schematic block diagram of a refrigerant quantity judging system according to a second embodiment of the present invention;
fig. 9 is a schematic block diagram of a refrigerant quantity judging system according to a third embodiment of the present invention;
fig. 10 is a schematic block diagram of a refrigerant quantity judging system according to a fourth embodiment of the present invention;
fig. 11 is a schematic block diagram of a refrigerant quantity judging system according to a fifth embodiment of the present invention;
FIG. 12 shows a schematic structural diagram of a computer device according to an embodiment of the invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
An embodiment of a first aspect of the present invention provides a method for determining a refrigerant quantity, which is used for an air conditioner, where the air conditioner includes an indoor unit and an outdoor unit, and the air conditioner is filled with a refrigerant.
Fig. 1 is a schematic flow chart illustrating a refrigerant quantity determination method according to a first embodiment of the present invention.
As shown in fig. 1, a method for determining a refrigerant quantity according to a first embodiment of the present invention includes:
step S102, detecting the exhaust parameters of the outdoor unit in the refrigeration mode;
step S104, judging the size relation between the exhaust parameters and preset exhaust parameters;
and step S106, determining whether the refrigerant quantity in the air conditioner reaches the standard refrigerant quantity according to the judgment result.
The method for judging the refrigerant quantity provided by the invention judges the refrigerant quantity of the system by comparing the actual measured value of some system parameters with the preset value in the refrigeration mode. The method has the advantages that the heat exchange load of the unit refrigerant is increased when the refrigerant quantity is insufficient, the heat exchange load of the unit refrigerant can be directly reflected on the physical performance parameters of the outdoor unit exhaust, the preset exhaust parameters obtained by summarizing experimental data can reflect the exhaust state of the outdoor unit of the air conditioner when the refrigerant charge quantity reaches the standard refrigerant quantity, the relationship between the refrigerant quantity in the current air conditioner and the standard refrigerant quantity can be correspondingly reflected by fully detecting the exhaust condition of the current outdoor unit and comparing the exhaust condition with the preset exhaust parameters, the detection result is reliable, the problem of insufficient accuracy of the judgment result is solved, the purposes of ensuring the safety and reliability of the air conditioning system and improving the user experience are achieved. In addition, only the exhaust of the outdoor unit is used as the detection object, and the sensors can be intensively arranged at the exhaust port of the outdoor unit, so that the detection is easy, and the maintenance and the overhaul of the sensors are convenient.
Fig. 2 is a schematic flow chart illustrating a refrigerant quantity determination method according to a second embodiment of the present invention.
As shown in fig. 2, a method for determining a refrigerant quantity according to a second embodiment of the present invention includes:
step S202, detecting the exhaust parameters of the outdoor unit in the refrigeration mode;
step S204, calculating the difference between the exhaust parameter and a preset exhaust parameter as an exhaust deviation value;
step S206, judging the relation between the exhaust deviation amount and a preset deviation amount;
step S208, determining whether the refrigerant quantity in the air conditioner reaches the standard refrigerant quantity according to the judgment result.
In the embodiment, the deviation amount of the exhaust parameter relative to the preset exhaust parameter is calculated firstly, and then the exhaust deviation amount is compared with the preset deviation amount, so that compared with a scheme of directly comparing the magnitude relation of the exhaust parameter and the preset exhaust parameter, the difference condition of the exhaust parameter and the preset exhaust parameter can be intuitively reflected, and the accuracy of the judgment result is improved; compared with the scheme of comparing the exhaust parameters with the preset exhaust parameters by means of an empirical formula, the calculation process is simpler, the calculation pressure is reduced, and the probability of calculation errors is greatly reduced.
In one embodiment of the present invention, preferably, the exhaust parameters include exhaust pressure P, exhaust temperature Tp, and exhaust superheat SH; the preset exhaust parameters comprise a preset exhaust pressure P0Preset exhaust temperature Tp0And preset exhaust superheat SH0The exhaust deviation comprises exhaust deviation △ P-P0Exhaust gas temperature deviation △ Tp-Tp0And the exhaust superheat deviation △ SH-SH0。
In this embodiment, the pressure, temperature and superheat of the outdoor unit discharge air are selected as discharge parameters to be detected, so that the detection accuracy can be improved. When the refrigerant quantity is lower than the standard refrigerant quantity, various physical performance parameters of outdoor unit exhaust, particularly pressure, temperature and superheat degree, can be caused to change due to the increase of heat exchange load of unit refrigerant, and the three are brought into a judgment standard at the same time, so that the problem of high error in the process of detecting a single parameter can be avoided, and the detection result is more reliable. Specifically, the exhaust pressure and the exhaust temperature are detected by a pressure sensor and a temperature sensor, and the exhaust superheat degree is calculated by subtracting the saturation temperature at the exhaust pressure from the exhaust temperature.
Fig. 3 is a schematic flow chart illustrating a refrigerant quantity determination method according to a third embodiment of the present invention.
As shown in fig. 3, a method for determining a refrigerant quantity according to a third embodiment of the present invention includes:
step S302, detecting the discharge pressure P and the discharge temperature Tp of the outdoor unit in the refrigeration mode, and calculating the discharge superheat SH;
step S304, according to the collected measured data and the preset exhaust parameter P of the system0、Tp0And SH0Calculating exhaust pressure deviation △ P, exhaust temperature deviation △ Tp and exhaust superheat deviation △ SH in real time, wherein △ P is P-P0，△Tp＝Tp-Tp0，△SH＝SH-SH0；
Step S306, judging whether △ P is less than or equal to-0.4, if so, turning to step S308, and if not, turning to step S310;
step S308, judging that the ratio k of the refrigerant quantity to the standard refrigerant quantity is less than or equal to 40 percent;
step S310, judging whether △ Tp is more than or equal to 20 or △ SH is more than or equal to 20, if yes, going to step S308, and if no, going to step S312;
step S312, judging whether Tp is more than 20 and more than △ and is more than 20 and more than △ SH and is more than or equal to 3, if yes, going to step S314, and if not, going to step S316;
step S314, judging that the ratio k of the refrigerant quantity to the standard refrigerant quantity is 40% < k < 75%;
step S316, judging that the ratio k of the refrigerant quantity to the standard refrigerant quantity is more than 75%.
When the refrigerant quantity is lower than the standard refrigerant quantity, the outdoor unit exhaust pressure is reduced, the exhaust temperature and the exhaust superheat degree are increased, the refrigerant quantity changes more and more greatly, the exhaust pressure deviation amount △ P can be divided into two intervals by the preset pressure deviation amount A, the exhaust temperature deviation amount △ Tp can be divided into three intervals by the first preset temperature deviation amount B1 and the second preset temperature deviation amount B2, the exhaust pressure deviation amount C1 and the second preset superheat deviation amount C2 can be divided into three intervals by the first preset temperature deviation amount C1 and the second preset superheat deviation amount C2, the exhaust pressure deviation amount C6336 Tsh deviation amount 890 can be divided into three intervals by the first preset temperature deviation amount B1 and the second preset temperature deviation amount B2, the exhaust pressure deviation amount C6345 and the exhaust pressure deviation amount C2, the exhaust pressure deviation amount C6336 deviation amount C630 Tsh can be divided into three intervals by the exhaust pressure deviation amount C638 deviation amount C6338, when the exhaust pressure deviation amount C9 is equal to the first preset temperature deviation amount B9, the exhaust pressure deviation amount C9 is equal to the second preset temperature deviation amount B9, the exhaust pressure deviation amount B9 is equal to the exhaust pressure deviation amount B9, the exhaust pressure deviation amount C9 is equal to the exhaust pressure deviation amount C9, the exhaust pressure deviation amount C24, the exhaust pressure deviation amount is determined, the exhaust pressure deviation amount C equivalent to the second preset interval, the exhaust pressure deviation amount C equivalent to the highest deviation amount C equivalent to the exhaust pressure deviation amount, the exhaust pressure deviation amount C equivalent to the standard refrigerant quantity, the exhaust pressure deviation amount C equivalent to the exhaust pressure deviation amount, the exhaust pressure deviation amount.
Fig. 4 is a schematic flow chart illustrating a refrigerant quantity determination method according to a fourth embodiment of the present invention.
As shown in fig. 4, a method for determining a refrigerant quantity according to a fourth embodiment of the present invention includes:
step S402, in the refrigeration mode, judging whether the continuous operation time length of the air conditioner reaches the preset time length, if so, turning to step S404, and if not, ending;
step S404, detecting the exhaust parameters of the outdoor unit;
step S406, judging the size relationship between the exhaust parameters and preset exhaust parameters;
step S408, determining whether the refrigerant quantity in the air conditioner reaches the standard refrigerant quantity according to the judgment result.
In this embodiment, after the air conditioner is continuously operated for a preset time, the air conditioning system enters a stable circulation state, and the exhaust parameter is detected again, so that the error of the detection value can be reduced, and the accuracy of the judgment result can be improved. Alternatively, the time is counted from the compressor start time, that is, the continuous operation time period of the compressor is taken as the continuous operation time period of the air conditioner. Specifically, the preset time period may be selected from 30 minutes to 60 minutes according to the size of the air conditioning system.
Fig. 5 is a schematic flow chart illustrating a refrigerant quantity determination method according to a fifth embodiment of the present invention.
As shown in fig. 5, a method for determining a refrigerant quantity according to a fifth embodiment of the present invention includes:
step S502, in the refrigeration mode, judging whether the outdoor environment temperature T1 and the indoor environment temperature T2 meet the conditions that T1 is more than or equal to-5 ℃ and less than or equal to 54 ℃ and T2 is more than or equal to 18 ℃ and less than or equal to 32 ℃, if so, turning to step S504, and if not, ending;
step S504, detecting the exhaust parameters of the outdoor unit;
step S506, judging the size relation between the exhaust parameters and preset exhaust parameters;
step S508, determining whether the refrigerant quantity in the air conditioner reaches the standard refrigerant quantity according to the determination result.
In this embodiment, experiments prove that the determination method defined in the present invention is effective in the above-mentioned ambient temperature range, so that before detecting the discharge parameters of the outdoor unit, it is first determined whether the ambient temperature is within the temperature range, which is helpful to ensure the accuracy of the determination result.
Fig. 6 is a schematic flow chart illustrating a refrigerant quantity judging method according to a sixth embodiment of the present invention.
As shown in fig. 6, a method for determining a refrigerant quantity according to a sixth embodiment of the present invention includes:
step S602, when the air conditioner is a multi-connected air conditioner, judging whether all indoor units are started in a refrigeration mode, if so, turning to step S604, and if not, ending;
step S604, detecting the exhaust parameters of the outdoor unit;
step S606, judging the size relation between the exhaust parameters and the preset exhaust parameters;
in step S608, it is determined whether the refrigerant quantity in the air conditioner reaches the standard refrigerant quantity according to the determination result.
In the embodiment, when the air conditioner is a multi-connected air conditioner, the standard refrigerant quantity is the refrigerant quantity required when all the indoor units are in the running state, so that for the multi-connected air conditioner, all the indoor units are required to be started before detection, the refrigerant quantity required by the running air conditioner can be ensured to be consistent with the standard refrigerant quantity, the judgment failure caused by the reduction of the refrigerant demand quantity when part of the indoor units run is avoided, and the accuracy of the judgment result is improved.
An embodiment of a second aspect of the present invention provides a refrigerant quantity determination system for an air conditioner, where the air conditioner includes an indoor unit and an outdoor unit, and the air conditioner is filled with a refrigerant.
Fig. 7 is a schematic block diagram of a refrigerant quantity judging system according to a first embodiment of the present invention.
As shown in fig. 7, a refrigerant quantity determination system 10 according to a first embodiment of the present invention includes:
the detection module 12 is used for detecting the exhaust parameters of the outdoor unit in the refrigeration mode;
the first judgment module 14 is used for judging the size relationship between the exhaust parameters and preset exhaust parameters;
and the examining and determining module 16 is used for determining whether the refrigerant quantity in the air conditioner reaches the standard refrigerant quantity according to the judgment result.
In the refrigerant quantity judging system provided by the invention, the detection module 12 detects the performance parameter of the exhaust of the outdoor unit in the refrigeration mode, the first judging module 14 compares the detected exhaust parameter with the preset exhaust parameter, and the examining and determining module 16 can determine whether the refrigerant quantity in the air conditioner reaches the standard refrigerant quantity. The method has the advantages that the heat exchange load of the unit refrigerant is increased when the refrigerant quantity is insufficient, the heat exchange load of the unit refrigerant can be directly reflected on the physical performance parameters of the outdoor unit exhaust, the preset exhaust parameters obtained by summarizing experimental data can reflect the exhaust state of the outdoor unit of the air conditioner when the refrigerant charge quantity reaches the standard refrigerant quantity, the relationship between the refrigerant quantity in the current air conditioner and the standard refrigerant quantity can be correspondingly reflected by fully detecting the exhaust condition of the current outdoor unit and comparing the exhaust condition with the preset exhaust parameters, the detection result is reliable, the problem of insufficient accuracy of the judgment result is solved, the purposes of ensuring the safety and reliability of the air conditioning system and improving the user experience are achieved. In addition, only the exhaust of the outdoor unit is used as the detection object, and the sensors can be intensively arranged at the exhaust port of the outdoor unit, so that the detection is easy, and the maintenance and the overhaul of the sensors are convenient.
Fig. 8 is a schematic block diagram of a refrigerant quantity judging system according to a second embodiment of the present invention.
As shown in fig. 8, a refrigerant quantity judging system 20 according to a second embodiment of the present invention includes:
the detection module 22 is used for detecting the exhaust parameters of the outdoor unit in the refrigeration mode;
a first judging module 24, configured to judge a magnitude relationship between the exhaust parameter and a preset exhaust parameter, where the first judging module 24 includes: a calculation unit 242 for calculating a difference between the exhaust parameter and a preset exhaust parameter as an exhaust deviation amount; a judgment unit 244 for judging the relationship between the exhaust deviation amount and a preset deviation amount;
and the examining and determining module 26 is used for determining whether the refrigerant quantity in the air conditioner reaches the standard refrigerant quantity according to the judgment result.
In this embodiment, the calculating unit 242 calculates the deviation amount of the exhaust parameter relative to the preset exhaust parameter, and the determining unit 244 compares the deviation amount of the exhaust parameter with the preset deviation amount, so that compared with a scheme of directly comparing the magnitude relationship between the exhaust parameter and the preset exhaust parameter, the difference between the exhaust parameter and the preset exhaust parameter can be visually reflected, which is helpful for improving the accuracy of the determination result; compared with the scheme of comparing the exhaust parameters with the preset exhaust parameters by means of an empirical formula, the calculation process is simpler, the calculation pressure is reduced, and the probability of calculation errors is greatly reduced.
In one embodiment of the present invention, preferably, the exhaust parameters include exhaust pressure P, exhaust temperature Tp, and exhaust superheat SH; the preset exhaust parameters comprise a preset exhaust pressure P0Preset exhaust temperature Tp0And preset exhaust superheat SH0The exhaust deviation comprises exhaust deviation △ P-P0Exhaust gas temperature deviation △ Tp-Tp0And the exhaust superheat deviation △ SH-SH0。
In this embodiment, the pressure, temperature and superheat of the outdoor unit discharge air are selected as discharge parameters to be detected, so that the detection accuracy can be improved. When the refrigerant quantity is lower than the standard refrigerant quantity, various physical performance parameters of outdoor unit exhaust, particularly pressure, temperature and superheat degree, can be caused to change due to the increase of heat exchange load of unit refrigerant, and the three are brought into a judgment standard at the same time, so that the problem of high error in the process of detecting a single parameter can be avoided, and the detection result is more reliable. Specifically, the exhaust pressure and the exhaust temperature are detected by a pressure sensor and a temperature sensor, and the exhaust superheat degree is calculated by subtracting the saturation temperature at the exhaust pressure from the exhaust temperature.
In one embodiment of the present invention, preferably, the preset deviation amount includes a preset pressure deviation amount a, a first preset temperature deviation amount B1, a second preset temperature deviation amount B2, a first preset superheat deviation amount C1, and a second preset superheat deviation amount C2, where a is-0.4, B1 is 20, B2 is 0, C1 is 20, and C2 is 3;
the judgment unit is specifically executed as:
the condition judgment of the exhaust deviation amount comprises the following steps:
the first condition is that △ P is less than or equal to-0.4;
the second condition is that △ P is > -0.4 and △ Tp is more than or equal to 20;
condition three, △ P > -0.4, and △ SH ≥ 20;
the fourth condition is that △ P > -0.4, 20 > △ Tp is more than or equal to 0, and 20 > △ SH is more than or equal to 3;
the approval module is specifically executed as:
when any one of the first condition, the second condition and the third condition is met, judging that the ratio k of the refrigerant quantity to the standard refrigerant quantity is less than or equal to 40 percent;
when the condition four is met, the ratio k of the refrigerant quantity to the standard refrigerant quantity is judged to be 40% < k < 75%;
and when the condition I, the condition II, the condition III and the condition IV are not met, judging that the ratio k of the refrigerant quantity to the standard refrigerant quantity is more than 75 percent.
In the embodiment, corresponding preset deviation amounts are set for the discharge pressure P, the discharge temperature Tp and the discharge superheat SH, and are compared by a judgment unit respectively, the examining module can obtain the ratio of the refrigerant amount to the standard refrigerant amount, so that the precision of the judgment result is improved, the examining module divides the refrigerant amount into three levels by means of a first ratio of 40% and a second ratio of 75%, the three levels correspond to the refrigerant amount which is seriously insufficient, the refrigerant amount which is slightly insufficient or sufficient, when the refrigerant amount is lower than the standard refrigerant amount, the discharge pressure of an outdoor unit is decreased, the discharge temperature and the discharge superheat are increased, the refrigerant amount is slightly changed, the judgment unit divides the discharge pressure deviation amount into two intervals by means of a preset pressure deviation amount A, the discharge temperature deviation amount △ into three intervals by means of a first preset temperature deviation amount B1 and a second preset temperature deviation amount B2, the first preset deviation amount C1 and the second deviation amount C2 can divide the discharge temperature deviation amount C △ into three intervals by means of a preset deviation amount C1 and a second deviation amount C2, the discharge pressure deviation amount C9 is taken as a preset deviation amount C9, when the discharge pressure deviation amount C36 and the discharge pressure deviation amount is equal to a smaller than SH 2, the discharge pressure C9, the discharge pressure deviation amount is equal to a, the discharge pressure C38, the discharge pressure is equal to a standard deviation amount, the discharge pressure C38, the discharge pressure deviation amount is judged to be equal to a standard deviation interval, the maximum deviation amount C38, the discharge pressure is smaller, when the discharge pressure deviation amount is found to be equal to the discharge pressure deviation amount is equal to the discharge pressure deviation interval, the discharge pressure C9 is equal to be equal to the maximum deviation interval, the maximum deviation amount is equal to the discharge pressure deviation interval, the discharge pressure C equivalent to the maximum deviation interval, the discharge pressure deviation interval, the maximum deviation interval, the discharge pressure is found to the discharge pressure C equivalent to the maximum deviation interval, the discharge pressure C equivalent to the discharge pressure deviation interval, the maximum deviation amount is equal to the discharge pressure deviation interval, the discharge pressure C equivalent to the discharge pressure C equivalent.
Fig. 9 is a schematic block diagram of a refrigerant quantity judging system according to a third embodiment of the present invention.
As shown in fig. 9, a refrigerant quantity determination system 30 according to a third embodiment of the present invention includes:
the second judging module 32 is configured to judge whether the continuous operation time of the air conditioner reaches a preset time in the cooling mode, and if so, activate the detecting module 34;
a detection module 34, configured to detect an exhaust parameter of the outdoor unit;
the first judging module 36 is used for judging the size relationship between the exhaust parameters and preset exhaust parameters;
and the examining and determining module 38 is configured to determine whether the amount of refrigerant in the air conditioner reaches a standard amount of refrigerant according to the determination result.
In this embodiment, after the second determining module 32 determines that the air conditioner is continuously operated for the preset time, the air conditioning system is considered to enter the stable circulation state, and the detecting module 34 detects the exhaust parameter again, so that the error of the detection value can be reduced, and the accuracy of the determination result can be improved. Alternatively, the time is counted from the compressor start time, that is, the continuous operation time period of the compressor is taken as the continuous operation time period of the air conditioner. Specifically, the preset time period may be selected from 30 minutes to 60 minutes according to the size of the air conditioning system. Optionally, the first determining module 36 and the second determining module 32 are the same determining module.
Fig. 10 is a schematic block diagram of a refrigerant quantity judging system according to a fourth embodiment of the present invention.
As shown in fig. 10, a refrigerant quantity judging system 40 according to a fourth embodiment of the present invention includes:
a third judging module 42, configured to judge whether the outdoor ambient temperature T1 and the indoor ambient temperature T2 satisfy the conditions that T1 is greater than or equal to-5 ℃ and less than or equal to 54 ℃ and T2 is greater than or equal to 18 ℃ and less than or equal to 32 ℃ in the cooling mode, and if so, activate the detecting module 44;
the detection module 44 is used for detecting the exhaust parameters of the outdoor unit;
the first judging module 46 is used for judging the size relationship between the exhaust parameters and the preset exhaust parameters;
and the examining and determining module 48 is used for determining whether the refrigerant quantity in the air conditioner reaches the standard refrigerant quantity according to the judgment result.
In this embodiment, experiments prove that the determination method defined in the present invention is effective in the above-mentioned ambient temperature range, so that the third determination module 42 first determines whether the ambient temperature is in the temperature range before detecting the discharge parameters of the outdoor unit, which is helpful to ensure the accuracy of the determination result. Optionally, the first determining module 46 and the third determining module 42 are the same determining module.
Fig. 11 is a schematic block diagram of a refrigerant quantity judging system according to a fifth embodiment of the present invention.
As shown in fig. 11, a refrigerant quantity judging system 50 according to a fifth embodiment of the present invention includes:
a fourth judging module 52, configured to, when the air conditioner is a multi-split air conditioner, judge whether all indoor units are turned on in the cooling mode, and if yes, activate the detecting module 54;
a detection module 54 for detecting the discharge parameters of the outdoor unit;
the first judging module 56 is used for judging the size relationship between the exhaust parameters and preset exhaust parameters;
and the examining and determining module 58 is used for determining whether the refrigerant quantity in the air conditioner reaches the standard refrigerant quantity according to the judgment result.
In this embodiment, when the air conditioner is a multi-split air conditioner, the standard refrigerant quantity is the refrigerant quantity required when all the indoor units are in the operating state, so for the multi-split air conditioner, the fourth judgment module 52 needs to ensure that all the indoor units are started before detection, the refrigerant quantity required by the operating air conditioner is consistent with the standard refrigerant quantity, the judgment failure caused by the reduction of the refrigerant demand when part of the indoor units operate is avoided, and the accuracy of the judgment result is improved. Alternatively, the first determining module 56 and the fourth determining module 52 are the same determining module.
An embodiment of a third aspect of the invention provides a computer apparatus.
FIG. 12 shows a schematic structural diagram of a computer device according to an embodiment of the invention.
As shown in fig. 12, a computer device 60 according to an embodiment of the present invention includes a memory 62, a processor 64, and a computer program stored in the memory 62 and executable on the processor 64, wherein the processor 64 implements the steps of the refrigerant quantity determination method according to any one of the above embodiments when executing the computer program.
The computer device 60 provided by the present invention can implement the refrigerant quantity determination method according to any of the above embodiments when the processor 64 executes the computer program, and thus has all the technical effects of the refrigerant quantity determination method according to any of the above embodiments, and will not be described herein again.
An embodiment of the fourth aspect of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the method for determining the amount of refrigerant according to any of the above embodiments.
The computer-readable storage medium provided by the present invention can implement the method for determining refrigerant quantity according to any of the above embodiments when the computer program is executed by the processor, so that the present invention has all the technical effects of the method for determining refrigerant quantity according to any of the above embodiments, and details thereof are not repeated herein.
The technical scheme of the invention is described in detail by combining the attached drawings, and the invention provides a refrigerant quantity judgment method for combining the exhaust pressure deviation △ P, the exhaust temperature deviation △ Tp and the exhaust superheat deviation △ SH of the system in the operation refrigeration mode of the air conditioning system.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A refrigerant quantity judging method is used for an air conditioner, the air conditioner comprises an indoor unit and an outdoor unit, and refrigerants are filled in the air conditioner, and the method is characterized by comprising the following steps:
detecting a discharge parameter of the outdoor unit in a cooling mode;
judging the size relationship between the exhaust parameters and preset exhaust parameters;
determining whether the refrigerant quantity in the air conditioner reaches the standard refrigerant quantity according to the judgment result;
the step of judging the size relationship between the exhaust parameters and the preset exhaust parameters comprises the following steps:
calculating the difference between the exhaust parameter and the preset exhaust parameter as an exhaust deviation value;
judging the relation between the exhaust deviation amount and a preset deviation amount;
the exhaust parameters comprise exhaust pressure P, exhaust temperature Tp and exhaust superheat SH;
the preset exhaust parameters comprise a preset exhaust pressure P0Preset exhaust temperature Tp0And preset exhaust superheat SH0；
The exhaust offset includes an exhaust offset △ P-P0Exhaust gas temperature deviation △ Tp-Tp0And the exhaust superheat deviation △ SH-SH0；
The preset deviation amount comprises a preset pressure deviation amount A, a first preset temperature deviation amount B1, a second preset temperature deviation amount B2, a first preset superheat degree deviation amount C1 and a second preset superheat degree deviation C2, wherein 0 is more than A, B1 is more than B2, and C1 is more than C2;
the operation of judging the magnitude relation between the exhaust deviation amount and the preset deviation amount specifically comprises the following steps:
the conditional judgment of the exhaust deviation amount includes:
the first condition is that △ P is less than or equal to A;
the second condition is that △ P is more than A, and △ Tp is more than or equal to B1;
the third condition is that △ P is more than A and △ SH is more than or equal to C1;
the fourth condition is that △ P is more than A, B1 is more than △ Tp is more than or equal to B2, and C1 is more than △ SH is more than or equal to C2;
the step of determining whether the refrigerant quantity in the air conditioner reaches the standard refrigerant quantity according to the judgment result specifically comprises the following steps:
when any one of the first condition, the second condition and the third condition is met, judging that the ratio of the refrigerant quantity to the standard refrigerant quantity is smaller than or equal to a first ratio;
when the fourth condition is met, judging that the ratio of the refrigerant quantity to the standard refrigerant quantity is larger than the first ratio and smaller than or equal to a second ratio;
when the condition one, the condition two, the condition three and the condition four are not satisfied, judging that the ratio of the refrigerant quantity to the standard refrigerant quantity is larger than the second ratio;
wherein the first ratio is less than the second ratio.
2. The method of determining a refrigerant quantity according to claim 1, further comprising, before the operation of detecting the discharge parameter of the outdoor unit:
and judging whether the continuous operation time of the air conditioner reaches a preset time.
3. The method of determining a refrigerant quantity according to claim 1, further comprising, before the operation of detecting the discharge parameter of the outdoor unit:
and judging whether the outdoor environment temperature T1 and the indoor environment temperature T2 meet the conditions that the temperature is between minus 5 ℃ and T1 and between 54 ℃ and between 18 ℃ and T2 and between 32 ℃.
4. The method of determining an amount of refrigerant according to claim 1, further comprising, before the operation of detecting a discharge parameter of the outdoor unit when the air conditioner is a multi-type air conditioner:
and judging whether all the indoor units are started.
5. The utility model provides a refrigerant volume judgement system for the air conditioner, the air conditioner includes indoor set and off-premises station, it has the refrigerant to fill in the air conditioner, its characterized in that includes:
the detection module is used for detecting the exhaust parameters of the outdoor unit in a refrigeration mode;
the first judgment module is used for judging the size relationship between the exhaust parameters and preset exhaust parameters;
the examination module is used for determining whether the refrigerant quantity in the air conditioner reaches the standard refrigerant quantity according to the judgment result;
the first judging module comprises:
the calculating unit is used for calculating the difference between the exhaust parameter and the preset exhaust parameter as an exhaust deviation amount;
the judging unit is used for judging the relation between the exhaust deviation amount and a preset deviation amount;
the exhaust parameters comprise exhaust pressure P, exhaust temperature Tp and exhaust superheat SH;
the preset exhaust parameters comprise a preset exhaust pressure P0Preset exhaust temperature Tp0And preset exhaust superheat SH0；
The exhaust offset includes an exhaust offset △ P-P0Exhaust gas temperature deviation △ Tp-Tp0And the exhaust superheat deviation △ SH-SH0；
The preset deviation amount comprises a preset pressure deviation amount A, a first preset temperature deviation amount B1, a second preset temperature deviation amount B2, a first preset superheat degree deviation amount C1 and a second preset superheat degree deviation C2, wherein 0 is more than A, B1 is more than B2, and C1 is more than C2;
the determination unit is specifically configured to:
the conditional judgment of the exhaust deviation amount includes:
the first condition is that △ P is less than or equal to A;
the second condition is that △ P is more than A, and △ Tp is more than or equal to B1;
the third condition is that △ P is more than A and △ SH is more than or equal to C1;
the fourth condition is that △ P is more than A, B1 is more than △ Tp is more than or equal to B2, and C1 is more than △ SH is more than or equal to C2;
the approval module is specifically executed to:
when any one of the first condition, the second condition and the third condition is met, judging that the ratio of the refrigerant quantity to the standard refrigerant quantity is smaller than or equal to a first ratio;
when the fourth condition is met, judging that the ratio of the refrigerant quantity to the standard refrigerant quantity is larger than the first ratio and smaller than or equal to a second ratio;
when the condition one, the condition two, the condition three and the condition four are not satisfied, judging that the ratio of the refrigerant quantity to the standard refrigerant quantity is larger than the second ratio;
wherein the first ratio is less than the second ratio.
6. The refrigerant quantity judging system according to claim 5, further comprising:
and the second judgment module is used for judging whether the continuous operation time of the air conditioner reaches the preset time.
7. The refrigerant quantity judging system according to claim 5, further comprising:
and the third judgment module is used for judging whether the outdoor environment temperature T1 and the indoor environment temperature T2 meet the conditions that the temperature is between minus 5 ℃ and T1 and between 54 ℃ and between 18 ℃ and T2 and between 32 ℃.
8. The system for determining refrigerant quantity according to claim 5, further comprising, when the air conditioner is a multi-type air conditioner:
and the fourth judgment module is used for judging whether all the indoor units are started.
9. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the method according to any of claims 1 to 4 when executing the computer program.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 4.
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| CN108981073B (en) * | 2018-07-09 | 2019-12-31 | 珠海格力电器股份有限公司 | Unit control method, control device and control system |
| CN109883011B (en) * | 2018-12-24 | 2021-02-19 | 珠海格力电器股份有限公司 | Refrigerant adjusting method and device and air conditioning system |
| CN112665107B (en) * | 2020-12-21 | 2023-03-14 | 广东美的暖通设备有限公司 | Refrigerant leakage detection method, device and equipment |
| CN115899990A (en) * | 2022-11-16 | 2023-04-04 | 宁波奥克斯电气股份有限公司 | Refrigerant quantity judging method and device, multi-split system and storage medium |
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| CN105509242B (en) * | 2015-12-23 | 2018-09-25 | 宁波奥克斯电气股份有限公司 | A kind of refrigerant super-addition control method for air conditioner |
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