CN116772362A - Method for detecting fluorine deficiency of air conditioning system and air conditioner - Google Patents
Method for detecting fluorine deficiency of air conditioning system and air conditioner Download PDFInfo
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- CN116772362A CN116772362A CN202310913298.4A CN202310913298A CN116772362A CN 116772362 A CN116772362 A CN 116772362A CN 202310913298 A CN202310913298 A CN 202310913298A CN 116772362 A CN116772362 A CN 116772362A
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- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 title claims abstract description 146
- 229910052731 fluorine Inorganic materials 0.000 title claims abstract description 146
- 239000011737 fluorine Substances 0.000 title claims abstract description 146
- 238000004378 air conditioning Methods 0.000 title claims abstract description 132
- 230000007812 deficiency Effects 0.000 title claims abstract description 94
- 238000000034 method Methods 0.000 title claims abstract description 38
- 230000006835 compression Effects 0.000 claims abstract description 72
- 238000007906 compression Methods 0.000 claims abstract description 72
- 238000001514 detection method Methods 0.000 claims abstract description 12
- 238000005057 refrigeration Methods 0.000 claims description 15
- 238000001704 evaporation Methods 0.000 claims description 8
- 230000005494 condensation Effects 0.000 claims description 5
- 238000009833 condensation Methods 0.000 claims description 5
- 230000008020 evaporation Effects 0.000 claims description 5
- 239000003507 refrigerant Substances 0.000 abstract description 11
- 238000012423 maintenance Methods 0.000 abstract description 6
- 230000002950 deficient Effects 0.000 description 8
- 230000000007 visual effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Human Computer Interaction (AREA)
- Fluid Mechanics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a method for detecting fluorine deficiency of an air conditioning system and an air conditioner, wherein the method for detecting fluorine deficiency of the air conditioning system comprises the following steps: s1, starting up; s2, receiving a fluorine deficiency detection instruction; s3, operating the air conditioner in a refrigerating mode, wherein the indoor fan is in the highest wind level and operates for a first preset time period t1 under the rated voltage; s4, performing a fluorine deficiency judging mode of the air conditioning system according to the compression ratio M and the suction temperature T3. Compared with the prior art, the method for detecting the fluorine deficiency of the air conditioning system provided by the invention has the advantages that firstly, the method for detecting the fluorine deficiency of the air conditioning system is provided, secondly, the refrigerant condition of the whole air conditioning system can be known in time by the detection method, the purpose of timely and effectively finding out whether the air conditioner lacks fluorine is achieved, normal use of a user is ensured, and timely maintenance after sale is facilitated; 3. and the fluorine deficiency judging mode of the air conditioning system is carried out according to the combination of the compression ratio M and the suction temperature T3, so that the accuracy and the precision of judging whether the air conditioning system lacks fluorine or not are improved.
Description
Technical Field
The invention relates to the field of air conditioners, in particular to a method for detecting fluorine deficiency of an air conditioning system and an air conditioner.
Background
At present, an air conditioner generally performs phase change refrigeration/heating through a refrigerant, freon is used as circulating blood of the whole air conditioning system, the air conditioner possibly has the problem of refrigerant leakage due to factors such as an installation mode, pipeline welding quality and the like, and if fluorine deficiency occurs, the air conditioner has poor refrigerating and heating effects, the temperature of a compressor winding is too high, and the phenomena such as protective shutdown influence normal use of users. At present, a method for detecting whether an air conditioning system lacks fluorine is not available, normal use of a user cannot be guaranteed, and after-sales maintenance is inconvenient.
In view of this, the present invention has been made.
Disclosure of Invention
The invention aims to provide a method for detecting fluorine deficiency of an air conditioning system and an air conditioner, which are used for solving the problems that whether the air conditioning system lacks fluorine or not cannot be ensured to be used normally by a user and after-sales maintenance is inconvenient to carry out in the prior art.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
a method for detecting fluorine deficiency of an air conditioning system, the method comprising the steps of:
s1, starting up;
s2, receiving a fluorine deficiency detection instruction;
s3, operating the air conditioner in a refrigerating mode, defaulting the position of the highest wind shield and the wind deflector of the indoor fan, and operating the air conditioner at rated voltage for a first preset time period t1;
s4, performing a fluorine deficiency judging mode of the air conditioning system according to the compression ratio M and the suction temperature T3.
The method for detecting the fluorine deficiency of the air conditioning system can be used for timely knowing the refrigerant condition of the whole air conditioning system, achieving the purpose of timely and effectively finding whether the air conditioner lacks fluorine or not, ensuring normal use of users and being convenient for timely maintenance after sale; 3. the air conditioning system fluorine deficiency judging mode is carried out according to the combination of the compression ratio M and the air suction temperature T3, so that whether the air conditioning system lacks fluorine can be judged, the fluorine deficiency range of the air conditioning system can be accurately judged when the air conditioning system lacks fluorine, and the accuracy and the precision of judging whether the air conditioning system lacks fluorine are improved.
The invention relates to a method for detecting fluorine deficiency of an air conditioning system, which comprises the following steps of S1 to S4 which are related to each other and are not separable; through the air conditioner operation refrigeration mode in the step S3, the highest wind level of the indoor fan is operated for a first preset time period t1 under the rated voltage; misjudgment can be avoided in the refrigeration mode, and meanwhile, whether fluorine is deficient or not is more visual in judgment in the refrigeration mode; then, the step S4 is used for carrying out a fluorine deficiency judging mode of the air conditioning system according to the compression ratio M and the suction temperature T3; the compression ratio M and the suction temperature T3 are combined for judgment, so that misjudgment can be avoided, and the accuracy and the precision of judging whether the air conditioning system lacks fluorine or not are improved.
Further, step S4 includes the steps of:
s41, acquiring evaporation pressure P1 and condensation pressure P2;
s42, calculating a compression ratio M, wherein the compression ratio M=condensing pressure P2/evaporating pressure P1, and judging whether the first compression ratio threshold a is smaller than or equal to the compression ratio M and smaller than or equal to the second compression ratio threshold b; if yes, go to step S43; if not, go to step S44;
s43, carrying out a first fluorine deficiency judging mode by combining the suction temperature T3;
s44, judging whether the compression ratio M is larger than a second compression ratio threshold b; if yes, go to step S45;
s45, carrying out a second fluorine deficiency judging mode by combining the suction temperature T3.
Step S41-step S45 are related to each other, are not separable, and are convenient to calculate the compression ratio by acquiring the evaporation pressure P1 and the condensation pressure P2 through the step S41, and are convenient to calculate and judge whether the first compression ratio threshold a is smaller than or equal to the compression ratio M and smaller than or equal to the second compression ratio threshold b through the step S42; and through judging whether the compression ratio M is larger than the second compression ratio threshold b in the step S44, the air conditioning system is convenient to operate and enters different fluorine deficiency judging modes according to different compression ratio ranges, and the accuracy and the precision of judging whether fluorine deficiency exists or not of the air conditioning system are improved.
Further, step S43 includes the steps of:
s431, acquiring an air suction temperature T3;
s432, judging whether the air suction temperature T3 is less than a first air suction temperature threshold value c; if yes, go to step S433; if not, go to step S434;
s433, the air conditioning system does not have the phenomenon of fluorine deficiency normally;
s434, judging whether the suction temperature T3 is less than a second suction temperature threshold d; if yes, go to step S435;
s435, the fluorine deficiency of the air conditioning system is less than or equal to 30%, the system maintains the current mode operation, and meanwhile, an early warning signal is required to be sent to the air conditioning control system, and the air conditioner stops operating after the whole machine continuously operates for a second preset time period t 2.
Step S431 to step S435 are related to each other, and are not separable, on the basis of judging the compression ratio in step S42, the detection of the air suction temperature T3 in combination with the detection of step S431 and step S432 is carried out, whether the air suction temperature T3 is smaller than the first air suction temperature threshold value c is judged, erroneous judgment can be avoided, whether the air conditioning system lacks fluorine can be judged, and when the air suction temperature T3 is smaller than the first air suction temperature threshold value c, the air conditioning system is indicated to normally not have the phenomenon of lacking fluorine, and the step S433 is entered; when the air suction temperature T3 is more than or equal to the first air suction temperature threshold value c, indicating that the air conditioning system has a fluorine deficiency phenomenon, and entering step S434; the step S434 is combined to judge whether the air suction temperature T3 is less than the second air suction temperature threshold d, so that the range of the fluorine deficiency of the air conditioning system can be accurately judged, and the accuracy and the precision of judging whether the fluorine deficiency exists by the air conditioning system are further improved; when the air suction temperature T3 is less than the second air suction temperature threshold d, the step S435 is entered, which shows that the fluorine deficiency of the air conditioning system is less than or equal to 30%, the system maintains the current mode operation, but the refrigerating effect is reduced, meanwhile, an early warning signal needs to be sent to the air conditioning control system, such as the flashing of a control lamp corresponding to a main board, etc., the air conditioner stops operating after the whole machine continuously operates for a second preset time period T2, thus the reliability of the whole machine can be ensured, because the whole machine has high air discharge under the condition of less refrigerant, and the phenomenon that the temperature of the compressor winding is high influences the reliability of the whole machine.
Further, step S45 includes the steps of:
s451, acquiring an inhalation temperature T3;
s452, judging whether the air suction temperature T3 is more than a second air suction temperature threshold d; if yes, go to step S453;
s453, the air conditioner system lacks fluorine more than 60%, the air conditioner stops running immediately and sends a signal of lacking fluorine through the whole machine controller.
Step S451 to step S453 are related to each other, are not separable, and on the basis of judging the compression ratio in step S44, whether the air suction temperature T3 is greater than the second air suction temperature threshold d is judged by combining the detection of the air suction temperature T3 in step S451 and step S452, so that erroneous judgment can be avoided, the range of the fluorine deficiency of the air conditioning system can be accurately judged, and the accuracy and precision of judging whether fluorine deficiency exists in the air conditioning system are further improved; when the air suction temperature T3 is more than the second air suction temperature threshold d, the step S453 is carried out, the air conditioner system is indicated to lack fluorine more than 60%, the air conditioner immediately stops running and sends a fluorine lack signal through the whole machine controller; on the one hand, the reliability of the air conditioner can be ensured, on the other hand, the complete machine controller is used for sending a fluorine-deficiency signal, and the signal can be displayed on an internal machine display screen (such as P3 and other code numbers), so that a user and after-sales maintenance personnel can be conveniently reminded of the fluorine deficiency of the complete machine system at the moment, and the complete machine operation is restored after the refrigerant is refilled or leakage is detected.
Further, step S1 includes the steps of:
s11, acquiring indoor environment temperature T1 and inner tube temperature T2;
s12, calculating absolute value |T1-T2| of temperature difference between indoor environment temperature and inner tube temperature, and judging whether |T1-T2| is less than or equal to a first temperature change threshold K 1 If yes, go to step S13;
s13, starting up.
The indoor environment temperature T1 and the inner tube temperature T2 are detected in the step S11, so that the step S12 is convenient to judge whether the I T1-T2I is less than or equal to a first temperature change threshold K1; when the I T1-T2I is less than or equal to the first temperature change threshold K1, starting in the step S13, wherein the temperature of the inner tube and the indoor environment temperature can be greatly different under different working conditions, if the starting condition is not met, the temperature of the inner tube can be reduced or increased after starting, and the time is calculated in a judging time range; and (3) setting starting conditions through the steps S11 to S13, and restarting the air conditioning system when the absolute value T1-T2 is less than or equal to the first temperature change threshold K1, so that the air conditioning system can conveniently judge whether fluorine is deficient in time.
Further, the value range of the first compression ratio threshold value a is [1,3].
The value of the first compression ratio threshold value a is set in the range, so that whether the air conditioning system lacks fluorine or not can be accurately judged, and the range of the fluorine deficiency of the air conditioning system can be accurately judged.
Further, the second compression ratio threshold b has a value in the range of [5,9].
The value of the second compression ratio threshold b is set in the above range, so that whether the air conditioning system lacks fluorine or not can be accurately judged, and the range of the fluorine deficiency of the air conditioning system can be accurately judged.
Further, the first suction temperature threshold c has a value in [18, 22], and the unit of the first suction temperature threshold c is ℃.
The value of the first suction temperature threshold value c is set in the range, so that whether the air conditioning system lacks fluorine or not can be accurately judged, and the range of the fluorine deficiency of the air conditioning system can be accurately judged.
Further, the second suction temperature threshold d has a value in [28, 32], and the unit of the second suction temperature threshold d is ℃.
The value of the second suction temperature threshold d is set in the range, so that whether the air conditioning system lacks fluorine or not can be accurately judged, and the range of the fluorine deficiency of the air conditioning system can be accurately judged.
In a second aspect of the present invention, an air conditioner is provided, the air conditioner including an outdoor unit and an indoor unit, an indoor fan being provided on the indoor unit, the air conditioner using any one of the methods for detecting fluorine deficiency in an air conditioning system.
Compared with the prior art, the method for detecting the fluorine deficiency of the air conditioning system and the air conditioner have the following beneficial effects:
1) The invention discloses a method for detecting the fluorine deficiency of an air conditioning system and an air conditioner, firstly, a method for detecting the fluorine deficiency of the air conditioning system is provided, secondly, the condition of a refrigerant of the whole air conditioning system can be known in time by the detection method, the purpose of timely and effectively finding out whether the air conditioner lacks fluorine or not is achieved, normal use of a user is ensured, and the abnormal situation can be treated in time after sale; 3. the air conditioning system fluorine deficiency judging mode is carried out according to the combination of the compression ratio M and the air suction temperature T3, so that whether the air conditioning system lacks fluorine can be judged, the fluorine deficiency range of the air conditioning system can be accurately judged when the air conditioning system lacks fluorine, and the accuracy and the precision of judging whether the air conditioning system lacks fluorine are improved.
2) The invention relates to a method for detecting fluorine deficiency of an air conditioning system and an air conditioner, wherein the method for detecting fluorine deficiency of the air conditioning system comprises the following steps of S1-S4, wherein the steps are related to each other, the air conditioning operation refrigeration mode is realized through the step S3, the highest wind gear of an indoor fan is operated for a first preset time period t1 under rated voltage; misjudgment can be avoided in the refrigeration mode, and meanwhile, whether fluorine is deficient or not is more visual in judgment in the refrigeration mode; then, the step S4 is used for carrying out a fluorine deficiency judging mode of the air conditioning system according to the compression ratio M and the suction temperature T3; the compression ratio M and the suction temperature T3 are combined for judgment, so that misjudgment can be avoided, and the accuracy and the precision of judging whether the air conditioning system lacks fluorine or not are improved.
Drawings
Fig. 1 is a schematic flow chart of a method for detecting fluorine deficiency of an air conditioning system according to an embodiment of the invention.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The description of "first," "second," etc. in embodiments of the present invention is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention will be described in detail below with reference to the drawings in connection with embodiments.
Example 1
The embodiment provides a method for detecting fluorine deficiency of an air conditioning system, as shown in fig. 1, the method for detecting fluorine deficiency of the air conditioning system comprises the following steps:
s1, starting up;
s2, receiving a fluorine deficiency detection instruction;
s3, operating the air conditioner in a refrigerating mode, defaulting the position of the highest wind shield and the wind deflector of the indoor fan, and operating the air conditioner at rated voltage for a first preset time period t1;
s4, performing a fluorine deficiency judging mode of the air conditioning system according to the compression ratio M and the suction temperature T3.
The method for detecting the fluorine deficiency of the air conditioning system can timely learn about the refrigerant condition of the whole air conditioning system, achieves the aim of timely and effectively finding out whether the air conditioning is deficient in fluorine or not, ensures normal use of users, and is convenient for timely handling anomalies after sale; 3. the air conditioning system fluorine deficiency judging mode is carried out according to the combination of the compression ratio M and the air suction temperature T3, so that whether the air conditioning system lacks fluorine can be judged, the fluorine deficiency range of the air conditioning system can be accurately judged when the air conditioning system lacks fluorine, and the accuracy and the precision of judging whether the air conditioning system lacks fluorine are improved.
According to the method for detecting the fluorine deficiency of the air conditioning system, the steps S1 to S4 are related to each other and are not separable, the highest wind shield and wind shield positions of an indoor fan are defaulted through the air conditioning operation refrigeration mode of the step S3, and the indoor fan is operated for a first preset time period t1 under the rated voltage; misjudgment can be avoided in the refrigeration mode, and meanwhile, whether fluorine is deficient or not is more visual in judgment in the refrigeration mode; then, the step S4 is used for carrying out a fluorine deficiency judging mode of the air conditioning system according to the compression ratio M and the suction temperature T3; the compression ratio M and the suction temperature T3 are combined for judgment, so that misjudgment can be avoided, and the accuracy and the precision of judging whether the air conditioning system lacks fluorine or not are improved.
Specifically, step S4 includes the steps of:
s41, acquiring evaporation pressure P1 and condensation pressure P2;
s42, calculating a compression ratio M, wherein the compression ratio M=condensing pressure P2/evaporating pressure P1, and judging whether the first compression ratio threshold a is smaller than or equal to the compression ratio M and smaller than or equal to the second compression ratio threshold b; if yes, go to step S43; if not, go to step S44;
s43, carrying out a first fluorine deficiency judging mode by combining the suction temperature T3;
s44, judging whether the compression ratio M is larger than a second compression ratio threshold b; if yes, go to step S45;
s45, carrying out a second fluorine deficiency judging mode by combining the suction temperature T3.
Step S41-step S45 are related to each other, are not separable, and are convenient to calculate the compression ratio by acquiring the evaporation pressure P1 and the condensation pressure P2 through the step S41, and are convenient to calculate and judge whether the first compression ratio threshold a is smaller than or equal to the compression ratio M and smaller than or equal to the second compression ratio threshold b through the step S42; and through judging whether the compression ratio M is larger than the second compression ratio threshold b in the step S44, the air conditioning system is convenient to operate and enters different fluorine deficiency judging modes according to different compression ratio ranges, and the accuracy and the precision of judging whether fluorine deficiency exists or not of the air conditioning system are improved.
Specifically, step S43 includes the steps of:
s431, acquiring an air suction temperature T3;
s432, judging whether the air suction temperature T3 is less than a first air suction temperature threshold value c; if yes, go to step S433; if not, go to step S434;
s433, the air conditioning system does not have the phenomenon of fluorine deficiency normally;
s434, judging whether the suction temperature T3 is less than a second suction temperature threshold d; if yes, go to step S435;
s435, the fluorine deficiency of the air conditioning system is less than or equal to 30%, the system maintains the current mode operation, and meanwhile, an early warning signal is required to be sent to the air conditioning control system, and the air conditioner stops operating after the whole machine continuously operates for a second preset time period t 2.
Step S431 to step S435 are related to each other, and are not separable, on the basis of judging the compression ratio in step S42, the detection of the air suction temperature T3 in combination with the detection of step S431 and step S432 is carried out, whether the air suction temperature T3 is smaller than the first air suction temperature threshold value c is judged, erroneous judgment can be avoided, whether the air conditioning system lacks fluorine can be judged, and when the air suction temperature T3 is smaller than the first air suction temperature threshold value c, the air conditioning system is indicated to normally not have the phenomenon of lacking fluorine, and the step S433 is entered; when the air suction temperature T3 is more than or equal to the first air suction temperature threshold value c, indicating that the air conditioning system has a fluorine deficiency phenomenon, and entering step S434; the step S434 is combined to judge whether the air suction temperature T3 is less than the second air suction temperature threshold d, so that the range of the fluorine deficiency of the air conditioning system can be accurately judged, and the accuracy and the precision of judging whether the fluorine deficiency exists by the air conditioning system are further improved; when the air suction temperature T3 is less than the second air suction temperature threshold d, the step S435 is entered, which shows that the fluorine deficiency of the air conditioning system is less than or equal to 30%, the system maintains the current mode operation, but the refrigerating effect is reduced, meanwhile, an early warning signal needs to be sent to the air conditioning control system, such as the flashing of a control lamp corresponding to a main board, etc., the air conditioner stops operating after the whole machine continuously operates for a second preset time period T2, thus the reliability of the whole machine can be ensured, because the whole machine has high air discharge under the condition of less refrigerant, and the phenomenon that the temperature of the compressor winding is high influences the reliability of the whole machine.
Specifically, step S45 includes the steps of:
s451, acquiring an inhalation temperature T3;
s452, judging whether the air suction temperature T3 is more than a second air suction temperature threshold d; if yes, go to step S453;
s453, the air conditioner system lacks fluorine more than 60%, the air conditioner stops running immediately and sends a signal of lacking fluorine through the whole machine controller.
Step S451 to step S453 are related to each other, are not separable, and on the basis of judging the compression ratio in step S44, whether the air suction temperature T3 is greater than the second air suction temperature threshold d is judged by combining the detection of the air suction temperature T3 in step S451 and step S452, so that erroneous judgment can be avoided, the range of the fluorine deficiency of the air conditioning system can be accurately judged, and the accuracy and precision of judging whether fluorine deficiency exists in the air conditioning system are further improved; when the air suction temperature T3 is more than the second air suction temperature threshold d, the step S453 is carried out, the air conditioner system is indicated to lack fluorine more than 60%, the air conditioner immediately stops running and sends a fluorine lack signal through the whole machine controller; on the one hand, the reliability of the air conditioner can be ensured, on the other hand, the complete machine controller is used for sending a fluorine-deficiency signal, and the signal can be displayed on an internal machine display screen (such as P3 and other code numbers), so that a user and after-sales maintenance personnel can be conveniently reminded of the fluorine deficiency of the complete machine system at the moment, and the complete machine operation is restored after the refrigerant is refilled or leakage is detected.
More specifically, step S1 includes the steps of:
s11, acquiring indoor environment temperature T1 and inner tube temperature T2;
s12, calculating absolute value |T1-T2| of temperature difference between indoor environment temperature and inner tube temperature, and judging whether |T1-T2| is less than or equal to a first temperature change threshold K 1 If yes, go to step S13;
s13, starting up.
The indoor environment temperature T1 and the inner tube temperature T2 are detected in the step S11, so that the step S12 is convenient to judge whether the I T1-T2I is less than or equal to a first temperature change threshold K1; when the I T1-T2I is less than or equal to the first temperature change threshold K1, starting in the step S13, wherein the temperature of the inner tube and the indoor environment temperature can be greatly different under different working conditions, if the starting condition is not met, the temperature of the inner tube can be reduced or increased after starting, and the time is calculated in a judging time range; and (3) setting starting conditions through the steps S11 to S13, and restarting the air conditioning system when the absolute value T1-T2 is less than or equal to the first temperature change threshold K1, so that the air conditioning system can conveniently judge whether fluorine is deficient in time.
More specifically, in step S3, in the air conditioner operating refrigeration mode, the position of the highest wind shield and the position of the wind deflector of the indoor fan are defaulted, and the air conditioner is operated for a first preset time period t1 under the rated voltage.
Specifically, a first temperature change threshold K 1 The range of the values of (2) is not particularly limited.
More specifically, the first temperature change threshold K 1 The value range of (5) is [0.8,1 ]]First temperature variation threshold K 1 Removable [0.8,1 ]]Any one of the values of the first temperature change threshold K 1 In units of °c.
Preferably, in the present embodiment, the first temperature change threshold K 1 The value of (2) is 1 ℃.
Specifically, the range of the value of the first compression ratio threshold value a is not particularly limited.
More specifically, the value range of the first compression ratio threshold value a is [1,3], and the first compression ratio threshold value a can take any one value of [1,3].
The value of the first compression ratio threshold value a is set in the range, so that whether the air conditioning system lacks fluorine or not can be accurately judged, and the range of the fluorine deficiency of the air conditioning system can be accurately judged.
Preferably, in this embodiment, the value of the first compression ratio threshold a is 2.
Specifically, the range of the second compression ratio threshold b is not particularly limited.
More specifically, the value range of the second compression ratio threshold b is [5,9], and the second compression ratio threshold b may take any one value of [5,9].
The value of the second compression ratio threshold b is set in the above range, so that whether the air conditioning system lacks fluorine or not can be accurately judged, and the range of the fluorine deficiency of the air conditioning system can be accurately judged.
Preferably, in the present embodiment, the value of the second compression ratio threshold b is 7.
Specifically, the range of the value of the first suction temperature threshold value c is not particularly limited.
More specifically, the first intake air temperature threshold c may be set to any one of values [18, 22] in [18, 22], and the unit of the first intake air temperature threshold c is ℃.
The value of the first suction temperature threshold value c is set in the range, so that whether the air conditioning system lacks fluorine or not can be accurately judged, and the range of the fluorine deficiency of the air conditioning system can be accurately judged.
Preferably, in this embodiment, the first suction temperature threshold c has a value of 20 ℃.
Specifically, the range of the second suction temperature threshold d is not particularly limited.
More specifically, the second intake air temperature threshold d may be set to any value of [28, 32] within a range of [28, 32], and the unit of the second intake air temperature threshold d is ℃.
The value of the second suction temperature threshold d is set in the range, so that whether the air conditioning system lacks fluorine or not can be accurately judged, and the range of the fluorine deficiency of the air conditioning system can be accurately judged.
Preferably, in this embodiment, the second suction temperature threshold d has a value of 30 ℃.
Specifically, the value range of the first preset duration t1 is not specifically limited.
More specifically, the value range of the first preset time period t1 is [25, 35], the first preset time period t1 can take any value of [25, 35], and the unit of the first preset time period t1 is min.
Preferably, in this embodiment, the value of the first preset time period t1 is 30min.
Specifically, the value range of the second preset duration t2 is not specifically limited.
More specifically, the value range of the second preset duration t2 is [1.5,2.5], the second preset duration t2 can take any one value of [1.5,2.5], and the unit of the second preset duration t2 is h.
Preferably, in this embodiment, the second preset time period t2 has a value of 2h.
The method for detecting the fluorine deficiency of the air conditioning system can timely learn about the refrigerant condition of the whole air conditioning system, achieves the aim of timely and effectively finding out whether the air conditioning is deficient in fluorine or not, ensures normal use of users, and is convenient for timely handling anomalies after sale; 3. the air conditioning system fluorine deficiency judging mode is carried out according to the combination of the compression ratio M and the air suction temperature T3, so that whether the air conditioning system lacks fluorine can be judged, the fluorine deficiency range of the air conditioning system can be accurately judged when the air conditioning system lacks fluorine, and the accuracy and the precision of judging whether the air conditioning system lacks fluorine are improved.
In the method for detecting fluorine deficiency of an air conditioning system, the steps S1 to S4 are related to each other, and the air conditioning operation refrigeration mode is adopted in the step S3, so that the highest wind level of an indoor fan is operated for a first preset time period t1 under the rated voltage; misjudgment can be avoided in the refrigeration mode, and meanwhile, whether fluorine is deficient or not is more visual in judgment in the refrigeration mode; then, the step S4 is used for carrying out a fluorine deficiency judging mode of the air conditioning system according to the compression ratio M and the suction temperature T3; the compression ratio M and the suction temperature T3 are combined for judgment, so that misjudgment can be avoided, and the accuracy and the precision of judging whether the air conditioning system lacks fluorine or not are improved.
Example 2
The embodiment provides an air conditioner, which comprises an outdoor unit and an indoor unit, wherein an indoor fan and an air deflector are arranged on the indoor unit, and the air conditioner comprises an air conditioner indoor unit and a method for detecting fluorine deficiency of an air conditioning system according to any one of the embodiment 1.
The air conditioner includes other relevant components besides the indoor fan and the air deflector, and the specific structure and specific assembly relation of the relevant components are all the prior art, which is not described herein.
The air conditioner has the same advantages as the method for detecting the fluorine deficiency of the air conditioning system compared with the prior art, and the description is omitted herein.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention should be assessed accordingly to that of the appended claims.
Claims (10)
1. The method for detecting the fluorine deficiency of the air conditioning system is characterized by comprising the following steps of:
s1, starting up;
s2, receiving a fluorine deficiency detection instruction;
s3, an air conditioner operates in a refrigeration mode, the highest wind gear of the indoor fan operates, and the indoor fan operates for a first preset time period t1 under rated voltage;
s4, judging the fluorine deficiency of the air conditioning system according to the compression ratio M and the suction temperature T3.
2. The method for detecting fluorine deficiency of an air conditioning system according to claim 1, wherein step S4 comprises the steps of:
s41, acquiring evaporation pressure P1 and condensation pressure P2;
s42, calculating a compression ratio M, wherein the compression ratio M=condensing pressure P2/evaporating pressure P1, and judging whether the first compression ratio threshold a is smaller than or equal to the compression ratio M and smaller than or equal to the second compression ratio threshold b; if yes, go to step S43; if not, go to step S44;
s43, carrying out a first fluorine deficiency judging mode by combining the suction temperature T3;
s44, judging whether the compression ratio M is larger than a second compression ratio threshold b; if yes, go to step S45;
s45, carrying out a second fluorine deficiency judging mode by combining the suction temperature T3.
3. The method for detecting fluorine deficiency of an air conditioning system according to claim 2, wherein step S43 comprises the steps of:
s431, acquiring an air suction temperature T3;
s432, judging whether the air suction temperature T3 is less than a first air suction temperature threshold value c; if yes, go to step S433; if not, go to step S434;
s433, the air conditioning system does not have the phenomenon of fluorine deficiency normally;
s434, judging whether the suction temperature T3 is less than a second suction temperature threshold d; if yes, go to step S435;
s435, the fluorine deficiency of the air conditioning system is less than or equal to 30%, the system maintains the current mode operation, and meanwhile, an early warning signal is required to be sent to the air conditioning control system, and the air conditioner stops operating after the whole machine continuously operates for a second preset time period t 2.
4. A method for detecting fluorine deficiency of an air conditioning system according to claim 3, wherein step S45 comprises the steps of:
s451, acquiring an inhalation temperature T3;
s452, judging whether the air suction temperature T3 is more than a second air suction temperature threshold d; if yes, go to step S453;
s453, the air conditioner system lacks fluorine more than 60%, the air conditioner stops running immediately and sends a signal of lacking fluorine through the whole machine controller.
5. The method for detecting fluorine deficiency of an air conditioning system according to claim 1, wherein step S1 comprises the steps of:
s11, acquiring indoor environment temperature T1 and inner tube temperature T2;
s12, calculating absolute value |T1-T2| of temperature difference between indoor environment temperature and inner tube temperature, and judging whether |T1-T2| is less than or equal to a first temperature change threshold K 1 If yes, go to step S13;
s13, starting up.
6. The method of claim 2, wherein the first compression ratio threshold a is in the range of [1,3].
7. The method of claim 2, wherein the second compression ratio threshold b has a value in the range of [5,9].
8. A method of detecting a fluorine deficiency in an air conditioning system according to claim 3, wherein the first suction temperature threshold c is provided in [18, 22] units of c.
9. A method of detecting a fluorine deficiency in an air conditioning system according to claim 3, wherein the second suction temperature threshold d is provided in [28, 32] units of degrees celsius.
10. An air conditioner, characterized in that the air conditioner comprises an outdoor unit and an indoor unit, an indoor fan is arranged on the indoor unit, and the air conditioner uses the method for detecting the fluorine deficiency of the air conditioning system according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310913298.4A CN116772362A (en) | 2023-07-25 | 2023-07-25 | Method for detecting fluorine deficiency of air conditioning system and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310913298.4A CN116772362A (en) | 2023-07-25 | 2023-07-25 | Method for detecting fluorine deficiency of air conditioning system and air conditioner |
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