CN111121223A - Fluorine-lacking protection method of air conditioner, air conditioner and storage medium - Google Patents
Fluorine-lacking protection method of air conditioner, air conditioner and storage medium Download PDFInfo
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- CN111121223A CN111121223A CN201911417248.7A CN201911417248A CN111121223A CN 111121223 A CN111121223 A CN 111121223A CN 201911417248 A CN201911417248 A CN 201911417248A CN 111121223 A CN111121223 A CN 111121223A
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- 238000000034 method Methods 0.000 title claims abstract description 52
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 128
- 239000011737 fluorine Substances 0.000 claims abstract description 128
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 127
- 238000001514 detection method Methods 0.000 claims abstract description 41
- 230000002950 deficient Effects 0.000 claims abstract description 24
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 230000007812 deficiency Effects 0.000 claims description 35
- 238000005057 refrigeration Methods 0.000 claims description 10
- 238000007791 dehumidification Methods 0.000 claims description 9
- 238000009423 ventilation Methods 0.000 claims description 5
- 238000004378 air conditioning Methods 0.000 abstract description 12
- 238000001816 cooling Methods 0.000 abstract description 8
- 230000007613 environmental effect Effects 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
- F24F11/66—Sleep mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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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
- F24F11/88—Electrical aspects, e.g. circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
Abstract
The invention discloses a fluorine-deficient protection method of an air conditioner, which comprises the following steps: judging whether the air conditioner meets a preset starting detection condition or not according to a first temperature group detected by a plurality of temperature sensing bags when the compressor is started; judging an air conditioner running mode when the air conditioner meets a preset starting detection condition; when the air conditioner is in a first operation mode, judging whether the air conditioner meets a preset first fluorine-lacking condition or not according to a second temperature group and a first temperature group which are detected by a plurality of temperature sensing bulbs, and entering fluorine-lacking protection when the air conditioner meets the preset first fluorine-lacking condition; and when the air conditioner is in a second operation mode, judging whether the air conditioner meets a preset second fluorine-lacking condition or not according to a third temperature group and a first temperature group which are detected by a plurality of temperature sensing bulbs, and entering fluorine-lacking protection when the air conditioner meets the preset second fluorine-lacking condition. The invention also discloses an air conditioner and a storage medium. The invention applies the fluorine-lacking protection to air conditioning cooling and air conditioning heating simultaneously, and reduces the fluorine-lacking misjudgment.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a fluorine-deficient protection method of an air conditioner, the air conditioner and a storage medium.
Background
Along with the popularization of air conditioners, the use faults of the air conditioners caused by refrigerant leakage of the air conditioners are increased gradually, and in the field of air conditioners, the air conditioners run for a long time under the condition of insufficient refrigerant, so that the compressors can run at high temperature for a long time, the service lives of the compressors are greatly shortened, the compressors can be damaged even in severe cases, and the performance of the whole air conditioners is reduced. Fluorine-deficient protection of the air conditioner is very important.
If the application number is 201910218440.7, a method for detecting fluorine deficiency by preventing misjudgment is disclosed, wherein the ambient temperature of an indoor unit and the pipe temperature of an indoor heat exchanger are detected in a refrigeration mode, an actual temperature difference value is calculated, whether the actual temperature difference value does not exceed a preset temperature difference value is judged, and if yes, whether the air conditioner is fluorine deficiency is judged according to the current value of an indoor fan; and/or detecting the environment temperature of the outdoor unit and the pipe temperature of the outdoor heat exchanger in the heating mode, calculating an actual temperature difference value, judging whether the actual temperature difference value does not exceed a preset temperature difference value, and judging whether the air conditioner is lack of fluorine or not according to the current value of the outdoor fan if the actual temperature difference value does not exceed the preset temperature difference value. According to the method in the application, the self conditions of the indoor heat exchanger and the outdoor heat exchanger are not detected and judged, and meanwhile, the actual temperature difference value is calculated only after the air conditioner is started and is delayed to the preset time, so that the judgment process is only carried out at a specific time point, the judgment result is easily misjudged by accidental factors at the specific time point, the air conditioner is subjected to fluorine-lacking protection under the condition of no fluorine deficiency or little fluorine deficiency, and the misprotection is realized.
Disclosure of Invention
The invention mainly aims to provide a fluorine-deficient protection method of an air conditioner, the air conditioner and a storage medium, and aims to solve the problem that fluorine-deficient misjudgment is easy to occur when fluorine-deficient protection is simultaneously applied to air conditioning refrigeration and air conditioning heating.
In order to achieve the above object, the present invention provides a fluorine deficiency protection method for an air conditioner, including:
acquiring a first temperature group detected by a plurality of temperature sensing bulbs when a compressor is started; the first temperature group comprises initial temperature detected by each temperature sensing bulb in the air conditioner;
judging whether the air conditioner meets a preset starting detection condition or not according to the first temperature group;
when the air conditioner meets a preset starting detection condition, judging whether the air conditioner is in a first operation mode or a second operation mode;
when the air conditioner is in a first operation mode, acquiring a second temperature group detected by a plurality of temperature sensing bulbs, judging whether the air conditioner meets a preset first fluorine lack condition according to the first temperature group and the second temperature group, and entering fluorine lack protection when the air conditioner meets the preset first fluorine lack condition;
when the air conditioner is in a second operation mode, a third temperature group detected through a plurality of temperature sensing bulbs is obtained, whether the air conditioner meets a preset second fluorine lack condition or not is judged according to the first temperature group and the third temperature group, and when the air conditioner meets the preset second fluorine lack condition, fluorine lack protection is carried out.
Preferably, the acquiring a first temperature group detected by a plurality of temperature sensing bulbs when the compressor is started includes:
when the compressor is started, the indoor coil temperature sensing bulb in the air conditioner is respectively controlled to detect the initial temperature T of the indoor coiln0Outdoor coil sense in the air conditionerInitial temperature T of outdoor coil pipe for thermometer bulb detectionw0And detecting the indoor initial ambient temperature T by the ambient tube temperature sensing bulb in the air conditionerh0And according to Tn0、Tw0And Th0A first temperature set was obtained.
Preferably, the determining whether the air conditioner satisfies a preset startup detection condition according to the first temperature group includes:
judging whether the indoor initial environment temperature in the first temperature group is within a preset temperature range or not, and judging whether the absolute value of the difference value between the indoor coil initial temperature in the first temperature group and the indoor initial environment temperature is smaller than or equal to a preset temperature difference characteristic value or not;
and if the indoor initial environment temperature is within a preset temperature range and the absolute value of the difference value between the indoor coil initial temperature and the indoor initial environment temperature is smaller than or equal to a preset temperature difference characteristic value, determining that the air conditioner meets a preset starting-up detection condition.
Preferably, when the air conditioner is in the first operation mode, acquiring a second temperature group detected by the plurality of thermal bulbs, determining whether the air conditioner meets a preset first fluorine deficiency condition according to the first temperature group and the second temperature group, and entering fluorine deficiency protection when the air conditioner meets the preset first fluorine deficiency condition, the method includes:
when the air conditioner is in a first operation mode, the indoor coil temperature sensing bulb is respectively controlled to detect the real-time temperature T of the indoor coilnThe outdoor coil pipe temperature sensing bulb detects the real-time temperature T of the outdoor coil pipewAnd the environment temperature sensing bulb detects the indoor real-time environment temperature ThAnd according to Tn、TwAnd ThObtaining a second temperature set; the first operation mode is a refrigeration mode or a dehumidification mode;
during a first period of operation of the compressor, T is calculated separatelyhAnd TnFirst temperature difference T1, Th0And Tn0And comparing the difference between the first temperature difference and the second temperature difference with a preset first characteristic value delta T1, and comparing T with the preset first characteristic value delta T1n0-TnComparing the T with a preset second characteristic value delta T2w-Tw0Comparing with a preset third characteristic value delta T3;
if T1-T2 is judged to be less than or equal to delta T1 continuously, Tn0-TnΔ T2 or less, and Tw-Tw0Determining that the air conditioner meets a preset first fluorine lack condition if the temperature is less than or equal to delta T3;
judging whether the working time of the compressor is less than or equal to a preset first rated time or not;
and when the working time of the compressor is less than or equal to a preset first rated time, the air conditioner sends out a fluorine lack signal and starts fluorine lack protection operation.
Preferably, the judging whether the working time of the compressor is less than or equal to a preset first rated time includes:
detecting whether a gear switching instruction is received;
if the gear switching instruction is not received, executing the following steps: judging whether the working time of the compressor is less than or equal to a preset first rated time or not;
if a gear switching instruction is received, clearing the second temperature group acquired in the first time period, and after the compressor continues to operate for a set time, returning to the step: respectively controlling the indoor coil temperature sensing bulb to detect the real-time temperature T of the indoor coilnThe outdoor coil pipe temperature sensing bulb detects the real-time temperature T of the outdoor coil pipewAnd the environment temperature sensing bulb detects the indoor real-time environment temperature ThAnd according to Tn、TwAnd ThA second temperature set was obtained.
Preferably, when the air conditioner is in the second operation mode, the obtaining a third temperature group detected by the plurality of thermal bulbs, determining whether the air conditioner satisfies a preset second fluorine deficiency condition according to the first temperature group and the third temperature group, and entering into fluorine deficiency protection when the air conditioner satisfies the preset second fluorine deficiency condition includes:
when the air conditioner is in a second operation mode, the indoor coil temperature sensing bulb is respectively controlled to detect the real indoor coilTime temperature Tn' the outdoor coil pipe temperature sensing bulb detects the real-time temperature T of the outdoor coil pipew' and the environment thermometer bulb detects indoor real-time environment temperature Th', and according to Tn′、Tw' and Th' obtaining a third temperature set; the second operation mode is a heating mode;
during a second period of operation of the compressor, T is calculated separatelyn' and Th' third temperature difference T3, Tn0And Th0And comparing the fourth temperature difference T4 with a preset fourth characteristic value delta T4, and comparing T3-T4 with the preset fourth characteristic value delta T4n′-Tn0Comparing the T with a preset fifth characteristic value delta T5w0-Tw' comparing with a preset sixth characteristic value Δ T6;
if T3-T4 is judged to be less than or equal to delta T4 continuously, Tn′-Tn0Δ T5 or less, and Tw0-Tw' < delta T6, determining that the air conditioner meets a preset second fluorine lack condition;
judging whether the working time of the compressor is less than or equal to a preset second rated time or not;
and when the working time of the compressor is less than or equal to a preset second rated time, the air conditioner sends out a fluorine lack signal and starts fluorine lack protection operation.
Preferably, the judging whether the working time of the compressor is less than or equal to a preset second rated time includes:
detecting whether a gear switching instruction is received;
if the gear switching instruction is not received, executing the following steps: judging whether the working time of the compressor is less than or equal to a preset second rated time or not;
if a gear switching instruction is received, clearing the third temperature group acquired in the second time period, and after the compressor continues to operate for a set time, returning to the step: respectively controlling the indoor coil temperature sensing bulb to detect the real-time temperature T of the indoor coiln' the outdoor coil pipe temperature sensing bulb detects the real-time temperature T of the outdoor coil pipew' and the environment thermometer bulb detects indoor real-time environment temperatureTh', and according to Tn′、Tw' and Th' get a third temperature set.
Preferably, after determining whether the air conditioner satisfies a preset startup detection condition according to the first temperature group, the method further includes:
when the air conditioner meets a preset starting detection condition, judging whether the air conditioner is in a third running mode;
when the air conditioner is in a third operation mode, the air conditioner operates normally; the third operating mode is a ventilation mode or a sleep mode.
In a second aspect, to achieve the above object, the present invention further provides an air conditioner, comprising: the device comprises an outdoor unit, an indoor unit, a memory, a main controller and a fluorine-lacking protection program which is stored on the memory and driven by the main controller;
the outdoor unit is provided with an outdoor coil pipe temperature sensing bulb; the indoor unit is provided with an environment temperature sensing bag and an indoor coil pipe temperature sensing bag; when the fluorine-lacking protection program is executed by the main controller, the steps of the fluorine-lacking protection method of the air conditioner are realized.
In a third aspect, to achieve the above object, the present invention further provides a computer readable storage medium, where a fluorine-deficient protection program is stored, and when executed by a main controller, the computer readable storage medium implements the steps of the fluorine-deficient protection method for an air conditioner as described above.
The method comprises the steps of judging whether the air conditioner meets a starting detection condition or not according to a first temperature group obtained when a compressor is started, further judging an air conditioner running mode when the air conditioner meets the starting detection condition, judging whether the air conditioner meets a preset fluorine-lacking condition corresponding to the air conditioner running mode or not according to the first temperature group and the temperature group obtained when the air conditioner runs, and entering fluorine-lacking protection when the air conditioner meets the preset fluorine-lacking condition corresponding to the air conditioner running mode. The method comprises the steps of firstly judging the starting detection condition when the compressor is started, then judging the preset fluorine-lacking condition when the air conditioner operates, and finally outputting the fluorine-lacking result, wherein when the preset fluorine-lacking condition when the air conditioner operates is judged, whether the air conditioner lacks fluorine is judged according to the temperature change of the indoor coil, the temperature change of the outdoor coil and the temperature difference change of the indoor coil and the indoor environment temperature, namely the self condition of the indoor coil and the outdoor coil in the air conditioner is increased as the judgment basis, the fluorine-lacking misjudgment of the air conditioner under the condition that the air conditioner does not lack fluorine or has little fluorine-lacking quantity can be avoided, the possibility of the occurrence of the misprotection is further reduced, and the reliability of the product is improved. In addition, when the fluorine-lacking protection is applied to air conditioning cooling and air conditioning heating, extra functional components for current detection and the like are not required to be added, the cost of the air conditioner is reduced, and the cost performance of the air conditioner is improved.
Drawings
FIG. 1 is a schematic flow chart illustrating an embodiment of a fluorine deficiency protection method for an air conditioner according to the present invention;
FIG. 2 is a schematic view of a detailed flow chart of step 30 in FIG. 1;
fig. 3 is a detailed flow chart of step 40 in fig. 1.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, an embodiment of the present invention provides a fluorine deficiency protection method for an air conditioner, where the fluorine deficiency protection method for the air conditioner includes:
step S10, acquiring a first temperature group detected by a plurality of temperature sensing bulbs when the compressor is started; the first temperature group includes an initial temperature detected by each of the thermal bulbs in the air conditioner.
In this embodiment, the air conditioner is provided with a plurality of thermal bulbs (the plurality of thermal bulbs means two or more thermal bulbs) for detecting temperature; the optional air conditioner can be a constant-speed cabinet provided with an outdoor coil pipe temperature sensing bag, and can also be an on-hook machine with the condition of increasing the outdoor coil pipe temperature sensing bag.
The first temperature group is an array comprising a plurality of temperature values formed by the initial temperatures respectively detected by each temperature sensing bulb, and the number of the temperature values in the first temperature group is the same as that of the temperature sensing bulbs.
Preferably, in a specific embodiment, the air conditioner is provided with an outdoor coil thermal bulb, an indoor coil thermal bulb and an environmental thermal bulb, and the step S10 specifically includes:
when the compressor is started, the indoor coil temperature sensing bulb in the air conditioner is respectively controlled to detect the initial temperature T of the indoor coiln0Detecting the initial temperature T of the outdoor coil by an outdoor coil temperature sensing bulb in the air conditionerw0And detecting the indoor initial ambient temperature T by the ambient tube temperature sensing bulb in the air conditionerh0And according to Tn0、Tw0And Th0A first temperature set was obtained.
Understandably, the first temperature group Z1 contains the indoor coil initial temperature Tn0Initial temperature T of outdoor coilw0And indoor initial ambient temperature Th0. Preferably, the indoor coil pipe temperature sensing package is installed in an indoor unit heat exchanger of the air conditioner; the outdoor coil pipe temperature sensing package is arranged in an outdoor unit heat exchanger of the air conditioner; the environment temperature sensing bag is arranged at an air return inlet of the indoor unit. The indoor coil pipe temperature sensing bulb comprises an indoor coil pipe sensor; the outdoor coil pipe temperature sensing bulb comprises an outdoor coil pipe sensor; the ambient bulb includes an ambient temperature sensor.
Preferably, in a specific embodiment, the step S10 includes:
judging whether the air conditioner is powered on for the first time or is started in a standby mode; if the air conditioner is powered on and started for the first time, executing the following steps: acquiring a first temperature packet detected by a plurality of temperature sensing packets when a compressor is started; if the air conditioner is in a standby state, comparing the standby time of the air conditioner in the standby state with a preset standby value (namely preset standby time); if the standby time of the air conditioner during standby starting is greater than or equal to a preset standby value, executing the following steps: acquiring a first temperature packet detected by a plurality of temperature sensing packets when a compressor is started; and if the standby time of the air conditioner during starting is less than a preset standby value, the air conditioner operates normally.
Understandably, whether the current air conditioner normally runs or not is judged according to the starting operation mode of the air conditioner, and the air conditioner is powered on for the first timeWhen the air conditioner is started, whether the current air conditioner normally operates needs to be further judged according to the starting detection condition and the preset fluorine-lacking condition corresponding to the air conditioner operation mode; when the air conditioner is in a standby starting state, judging whether the current air conditioner normally runs or not according to the standby time of the air conditioner in the standby starting state. Specifically, the standby time T of the air conditioner in this embodiment when the air conditioner is turned ondComparing with a preset standby value T when T is reacheddWhen the current air conditioner runs normally, judging whether the current air conditioner runs normally according to the starting detection condition and the preset fluorine-lacking condition corresponding to the air conditioner running mode; when T isd<And when t, the air conditioner operates normally.
It should be noted that, on the premise that the air conditioner satisfies the startup detection condition, the operation mode of the air conditioner is further detected, and whether the air conditioner lacks fluorine or not is determined according to the preset fluorine-lacking condition corresponding to the operation mode of the air conditioner, or whether the air conditioner normally operates is detected.
And step S20, judging whether the air conditioner meets the preset starting detection condition according to the first temperature group.
In the embodiment, whether the air conditioner normally operates is judged according to the preset starting-up detection condition, when the air conditioner meets the starting-up detection condition, the air conditioner operation mode is further detected, whether the air conditioner normally operates is judged according to the preset fluorine-lacking condition corresponding to the air conditioner operation mode, namely whether the air conditioner lacks fluorine is judged, and then fluorine-lacking protection is performed; and when the air conditioner does not meet the starting detection condition, the air conditioner normally operates.
Preferably, in one embodiment, the first temperature set Z1 comprises an indoor coil initial temperature Tn0Initial temperature T of outdoor coilw0And indoor initial ambient temperature Th0(ii) a The step S20 includes:
firstly, whether the indoor initial environment temperature in the first temperature group is within a preset temperature range or not is judged, and whether the absolute value of the difference value between the indoor coil initial temperature in the first temperature group and the indoor initial environment temperature is smaller than or equal to a preset temperature difference characteristic value or not is judged.
And then if the indoor initial environment temperature is within a preset temperature range, and the absolute value of the difference value between the indoor coil initial temperature and the indoor initial environment temperature is smaller than or equal to a preset temperature difference characteristic value, determining that the air conditioner meets a preset starting-up detection condition. And if the indoor initial environment temperature is not within the preset temperature range, or the absolute value of the difference value between the indoor coil initial temperature and the indoor initial environment temperature is larger than the preset temperature difference characteristic value, determining that the air conditioner does not meet the preset starting-up detection condition, and normally operating the air conditioner.
Understandably, it is determined whether the indoor initial ambient temperature Th0 in the first temperature group Z1 is within the preset temperature range [ D1, D2 ]]And determining T in the first temperature group Z1n0And Th0Whether the absolute value of the difference T0 is less than or equal to the preset temperature difference characteristic value delta T or not, when T is less than or equal to the preset temperature difference characteristic value delta Tn0∈[D1,D2]And when T0 is less than or equal to delta T, determining that the air conditioner meets the preset starting detection condition, further detecting the air conditioner operation mode, and judging whether the air conditioner normally operates according to the preset fluorine-lacking condition corresponding to the air conditioner operation mode; when in use
Or T0>And when the temperature is delta T, the air conditioner normally operates, and the acquired first temperature group is cleared, namely the data is cleared.
Preferably, in a specific embodiment, the step S20 is followed by:
when the air conditioner meets a preset starting detection condition, detecting whether the air conditioner receives a user shutdown instruction; if the air conditioner does not receive the user shutdown instruction, step S30 is executed: judging whether the air conditioner is in a first operation mode or a second operation mode, namely further judging the operation mode of the air conditioner, and judging whether the air conditioner normally operates according to a preset fluorine-lacking condition corresponding to the operation mode of the air conditioner; and if the air conditioner receives a user shutdown instruction, the air conditioner shuts down and clears the acquired first temperature group. That is, when a user shutdown command triggered by an input device (e.g., a remote control, an emergency switch, etc.) connected to the air conditioner is received, the air conditioner is shut down, and the first temperature group and other data calculated according to the first temperature group are cleared, and the air conditioner waits for the next startup.
And step S30, when the air conditioner meets the preset starting detection condition, judging whether the air conditioner is in a first operation mode or a second operation mode.
The air conditioner in this embodiment includes a first operation mode and a second operation mode, and optionally, the first operation mode includes a cooling mode, a dehumidification mode, an automatic cooling mode, an automatic dehumidification mode, and the like. The second operation mode includes a heating mode, an automatic heating mode, and the like. In another embodiment, the air conditioner further includes a third operation mode including a ventilation mode, a sleep mode, and the like.
Step S40, when the air conditioner is in a first operation mode, obtaining a second temperature group detected by a plurality of temperature sensing bulbs, judging whether the air conditioner meets a preset first fluorine lack condition according to the first temperature group and the second temperature group, and entering fluorine lack protection when the air conditioner meets the preset first fluorine lack condition.
Taking an air conditioner provided with an outdoor coil temperature sensing bag, an indoor coil temperature sensing bag and an environment temperature sensing bag as an example, when the air conditioner is in any one of a refrigeration mode, a dehumidification mode, an automatic refrigeration mode and an automatic dehumidification mode, the compressor continuously operates within a first time period T1 according to a preset time interval M to control the indoor coil temperature sensing to detect the real-time temperature Tn of the indoor coil and control the outdoor coil temperature sensing to detect the real-time temperature T of the outdoor coilwAnd controlling the environment temperature sensing bulb to detect the indoor real-time environment temperature ThFurther obtain a product containing Tn、TwAnd ThAnd a second temperature set Z2.
According to a first temperature group Z1 and a second temperature group Z2, the temperature difference between the indoor environment temperature and the indoor coil temperature, the temperature difference between the indoor coil temperature and the outdoor coil temperature are calculated, whether the air conditioner is lack of fluorine is judged according to the temperature difference between the indoor environment temperature and the indoor coil temperature, the temperature difference between the indoor coil temperature and the outdoor coil temperature in a first time period t1 when the compressor continuously operates, and when the temperature difference between the indoor environment temperature and the indoor coil temperature is not obvious, the temperature change of the indoor coil is not obvious and the temperature change of the outdoor coil is not obvious, the fact that the refrigerating capacity of the air conditioner is insufficient and the air conditioner is lack of fluorine can be determined, namely the air conditioner meets a preset first fluorine lack condition is determined, and the air conditioner enters fluorine lack protection.
Step S50, when the air conditioner is in a second operation mode, acquiring a third temperature group detected by a plurality of temperature sensing bulbs, judging whether the air conditioner meets a preset second fluorine lack condition according to the first temperature group and the third temperature group, and entering fluorine lack protection when the air conditioner meets the preset second fluorine lack condition.
Taking an air conditioner provided with an outdoor coil temperature sensing bag, an indoor coil temperature sensing bag and an environmental temperature sensing bag as an example, when the air conditioner is in a heating mode or an automatic heating mode, the indoor coil temperature sensing detection real-time temperature T of the indoor coil is controlled by the indoor coil temperature sensing detection real-time temperature T2 according to the preset time interval M in the second time interval T2 when the compressor continuously operatesn' controlling outdoor coil temperature sensing and detecting outdoor coil real-time temperature Tw', and controlling the environmental bulb to detect the indoor real-time environmental temperature Th', further, it can be obtained to contain Tn′、Tw' and Th' third temperature group Z3.
Calculating the indoor coil temperature T according to the first temperature group Z1 and the third temperature group Z3n' with the indoor ambient temperature ThThe temperature difference of' the temperature difference of the indoor coil pipe, the temperature difference of the temperature of the indoor coil pipe and the temperature difference of the temperature of the outdoor coil pipe, whether the air conditioner lacks fluorine is judged according to the temperature difference of the temperature of the indoor coil pipe and the temperature of the indoor environment, the temperature difference of the temperature of the indoor coil pipe and the temperature difference of the temperature of the outdoor coil pipe in a second time period t2 when the compressor continuously operates, and when the temperature difference of the temperature of the indoor coil pipe and the temperature of the indoor environment is not obviously changed, the temperature of the indoor coil pipe is changed, and the temperature of the outdoor coil pipe is changed, the heating capacity of the air conditioner is determined to be insufficient, the air conditioner lacks fluorine.
According to the embodiment, whether the air conditioner meets the starting detection condition is judged according to the first temperature group obtained when the compressor is started, when the air conditioner meets the starting detection condition, the air conditioner running mode is further judged, whether the air conditioner meets the preset fluorine-lacking condition corresponding to the air conditioner running mode is judged according to the first temperature group and the temperature group obtained when the air conditioner runs, and when the air conditioner meets the preset fluorine-lacking condition corresponding to the air conditioner running mode, fluorine-lacking protection is started. The embodiment firstly judges the starting detection condition when the compressor is started, then judges the preset fluorine-lacking condition when the air conditioner operates, and finally outputs the fluorine-lacking result, when the preset fluorine-lacking condition when the air conditioner operates is judged, whether the air conditioner lacks fluorine is judged according to the temperature change of the indoor coil, the temperature change of the outdoor coil and the temperature difference change of the indoor coil and the indoor environment temperature, namely, the condition of the indoor coil in the air conditioner is increased, and the condition of the outdoor coil is taken as the judgment basis, so that the fluorine-lacking misjudgment of the air conditioner under the condition that the fluorine is not lacked or the fluorine-lacking amount is little can be avoided, the possibility of the occurrence of the misprotection is further reduced, and the reliability of the product is improved. In addition, when the fluorine-lacking protection is applied to air conditioning cooling and air conditioning heating, extra functional components for current detection and the like are not required to be added, the cost of the air conditioner is reduced, and the cost performance of the air conditioner is improved.
Further, as shown in fig. 2, an embodiment of the present invention provides a fluorine-deficient protection method for an air conditioner, based on the embodiment shown in fig. 1, where the step S30 includes:
step S301, when the air conditioner is in a first operation mode, the indoor coil temperature sensing bulb is respectively controlled to detect the real-time temperature T of the indoor coilnThe outdoor coil pipe temperature sensing bulb detects the real-time temperature T of the outdoor coil pipewAnd the environment temperature sensing bulb detects the indoor real-time environment temperature ThAnd according to Tn、TwAnd ThObtaining a second temperature set; the first operation mode is a cooling mode or a dehumidifying mode.
Step S302, respectively calculating T in a first time interval of the operation of the compressorhAnd TnFirst temperature difference T1, Th0And Tn0And comparing the difference between the first temperature difference and the second temperature difference with a preset first characteristic value delta T1Comparing, with Tn0-TnComparing the T with a preset second characteristic value delta T2w-Tw0And compared with a preset third characteristic value deltat 3.
Step S303, if the T1-T2 is judged to be less than or equal to delta T1 continuously, Tn0-TnΔ T2 or less, and Tw-Tw0And if the temperature is less than or equal to delta T3, determining that the air conditioner meets a preset first fluorine lack condition.
And step S304, judging whether the working time of the compressor is less than or equal to a preset first rated time.
Step S305, when the working time of the compressor is less than or equal to a preset first rated time, the air conditioner sends out a fluorine lack signal and starts the fluorine lack protection operation.
Obtaining the value containing T at the preset time M in the first period T1 of the continuous operation of the compressorn、TwAnd ThAccording to T in the second temperature group Z2hAnd TnCalculating a first temperature difference T1 according to T in the first temperature group Z1h0And Tn0Calculating a second temperature difference T2, comparing T1-T2 with a preset first characteristic value delta T1, and comparing Tn0-TnComparing the first characteristic value with a preset second characteristic value delta T2 and comparing Tw-Tw0Comparing with the third characteristic value delta T3, continuously judging T1-T2 ≤ delta T1 in the first time period T1n0-TnΔ T2 or less, and Tw-Tw0Determining that the air conditioner meets a preset first fluorine lack condition and further judging the working time T of the compressor when the delta T3 is less than or equal torWhether it is less than or equal to the preset first rated time te1At Tr≤te1And the air conditioner sends out a fluorine lack signal and starts the fluorine lack protection operation. That is, a fluorine deficiency fault code is displayed and the compressor is stopped. And at Tr>te1And when the temperature of the second temperature group is higher than the preset temperature, the second temperature group is cleared, and the air conditioner operates normally.
It can be understood that the preset first characteristic value, the preset second characteristic value, the preset third characteristic value and the preset first rated time in the embodiment are set according to the type of the air conditioner and the parameters of the air conditioner, such as the cooling capacity and the circulating air volume.
In an embodiment, as shown in fig. 2, the step S302 is followed by:
in step S306, if T1-T2 is determined>Δ T1, or Tn0-Tn>Δ T2, or Tw-Tw0>And delta T3, determining that the air conditioner does not meet the preset first fluorine lack condition, and the air conditioner normally operates.
It can be understood that, in the first period T1 of the continuous operation of the compressor, if T1-T2 is judged>Δ T1, or Tn0-Tn>Δ T2, or Tw-Tw0>And delta T3 shows that the temperature change of the indoor coil is obvious, or the temperature change of the outdoor coil is obvious, the refrigerating capacity is enough, and the air conditioner can be determined not to be in a fluorine-lacking state and normally run.
It should be noted that, the temperature change of the indoor coil and the temperature change of the outdoor coil have a correlation, and the temperature change trend of the indoor coil is the same as the temperature change trend of the outdoor coil.
When this embodiment will lack fluorine protection and be applied to air conditioner refrigeration or air conditioner dehumidification, avoided the air conditioner not lack fluorine or lack fluorine volume and appear lacking fluorine misjudgement under few circumstances, and then reduced the possibility that the error protection appears, improved the reliability of product.
Further, an embodiment of the present invention provides a method for protecting an air conditioner from lacking fluorine, based on the embodiment shown in fig. 2, before the step S304, the method includes:
detecting whether a gear switching instruction is received; if the gear switching instruction is not received, executing the following steps: judging whether the working time of the compressor is less than or equal to a preset first rated time or not; and if a gear switching instruction is received, clearing the second temperature group acquired in the first time period, and after the compressor continues to operate for a set time, returning to the step: respectively controlling the indoor coil temperature sensing bulb to detect the real-time temperature T of the indoor coilnThe outdoor coil pipe temperature sensing bulb detects the real-time temperature T of the outdoor coil pipewAnd the environment temperature sensing bulb detects the indoor real-time environment temperature ThAnd according to Tn、TwAnd ThA second temperature set was obtained.
In this embodiment, the air conditioner is provided with a low wind level, a medium wind level and a high wind level in the first operation mode.
When the air conditioner works in a first running mode, after the air conditioner is switched by a wind gear, the temperature of an indoor inner pipe and the temperature of an outdoor coil pipe are obviously changed, so that before the air conditioner enters fluorine-lacking protection, whether the air conditioner receives a windshield switching instruction needs to be detected, if the air conditioner does not receive the windshield switching instruction, the air conditioner enters the fluorine-lacking protection, and at the moment, if the working time (namely the continuous running time) of the compressor is judged to be less than or equal to a first rated time, the compressor is stopped, and a fluorine-lacking fault code is displayed; if the air conditioner receives the windshield switching command, the second temperature group Z2 acquired in the first time period T1 is cleared after the windshield switching is completed, and after the compressor continues to operate for a set time, for example, after the compressor continues to operate for 5 minutes, the operation returns to step S301 to detect T againn、TwAnd ThAnd obtaining a second temperature group Z2 'after the wind level is switched, and further judging whether the air conditioner meets the first fluorine lack condition according to Z2' and Z0. The embodiment can further reduce the fluorine-lacking misjudgment during air conditioner refrigeration or air conditioner dehumidification, further reduce the possibility of misprotection, and improve the operation reliability of the air conditioner.
Further, as shown in fig. 3, another embodiment of the present invention provides a fluorine-deficient protection method for an air conditioner, based on the above embodiment shown in fig. 1, where the step S40 includes:
step S401, when the air conditioner is in a second operation mode, the indoor coil temperature sensing bags are respectively controlled to detect the real-time temperature T of the indoor coiln' the outdoor coil pipe temperature sensing bulb detects the real-time temperature T of the outdoor coil pipew' and the environment thermometer bulb detects indoor real-time environment temperature Th', and according to Tn′、Tw' and Th' obtaining a third temperature set; the second operating mode is a heating mode.
Step S402, respectively calculating T in a second time interval of the operation of the compressorn' and Th' third temperature difference T3, Tn0And Th0And comparing the fourth temperature difference T4 with a preset fourth characteristic value delta T4, and comparing T3-T4 with the preset fourth characteristic value delta T4n′-Tn0Comparing the T with a preset fifth characteristic value delta T5w0-Tw' is compared with a preset sixth characteristic value Δ T6.
In step S403, if T3-T4 is not more than delta T4, Tn′-Tn0Δ T5 or less, and Tw0-Tw' ≦ Δ T6, the air conditioner is determined to satisfy the preset second fluorine deficiency condition.
And step S404, judging whether the working time of the compressor is less than or equal to a preset second rated time.
And S405, when the working time of the compressor is less than or equal to a preset second rated time, the air conditioner sends out a fluorine lack signal and starts fluorine lack protection operation.
Acquiring the value containing T at the preset time M in the second time period T2 of the continuous operation of the compressorn′、Tw' and Th' third temperature group Z3, according to T in third temperature group Z3n' and Th' calculating a third temperature difference T3, according to T in the first temperature group Z1n0And Th0Calculating a fourth temperature difference T4, comparing T3-T4 with a preset fourth characteristic value delta T4, and comparing Tn′-Tn0Comparing the value with a preset fifth characteristic value delta T5 and comparing Tw0-Tw' when compared with the sixth characteristic value Δ T6, T3-T4 ≦ Δ T4 is continuously determined during the second time period T2n′-Tn0Δ T5 or less, and Tw0-TwWhen the temperature is not more than delta T6, the air conditioner is determined to meet the preset first fluorine lack condition, and the working time T of the compressor is further judgedrWhether it is less than or equal to the preset second rated time te2At Tr≤te2And the air conditioner sends out a fluorine lack signal and starts the fluorine lack protection operation. That is, a fluorine deficiency fault code is displayed and the compressor is stopped. And at Tr>te2And when the temperature of the third temperature group is not higher than the preset temperature, the third temperature group is cleared, and the air conditioner operates normally.
It can be understood that the preset fourth characteristic value, the preset fifth characteristic value, the preset sixth characteristic value and the preset second rated time in the embodiment are set according to the type of the air conditioner and the parameters of the air conditioner, such as the heating capacity and the circulating air volume.
It should be noted that the second time period in the present embodiment may be the same as or different from the first time period in the above embodiment; the second rated time in the present embodiment may be the same as or different from the first rated time in the above embodiments.
In an embodiment, as shown in fig. 3, the step S402 is followed by:
in step S406, if T3-T4 is determined>Δ T4, or Tn′-Tn0>Δ T5, or Tw0-Tw′>And delta T6, determining that the air conditioner does not meet the preset second fluorine lack condition, and normally operating the air conditioner.
Understandably, in the second time period T2 when the compressor is continuously operated, if T3-T4 is judged>Δ T4, or Tn′-Tn0>Δ T5, or Tw0-Tw′>And delta T6 shows that the temperature change of the indoor coil is obvious, or the temperature change of the outdoor coil is obvious, the heating quantity is enough, and the air conditioner can be determined not to be in a fluorine-lacking state and normally run.
The embodiment applies the fluorine-lacking protection to air conditioning refrigeration and air conditioning heating simultaneously, can avoid the fluorine-lacking error protection of the air conditioner under the condition of no fluorine deficiency or little fluorine deficiency, further reduces the possibility of error protection and improves the reliability of the product. In addition, when the fluorine-lacking protection is applied to air conditioning cooling and air conditioning heating, extra functional components for current detection and the like are not required to be added, the cost of the air conditioner is reduced, and the cost performance of the air conditioner is improved.
Further, an embodiment of the present invention provides a method for protecting an air conditioner from lacking fluorine, based on the embodiment shown in fig. 3, before the step S404, the method includes:
detecting whether a gear switching instruction is received; if the gear switching instruction is not received, executing the following steps: judging whether the working time of the compressor is less than or equal to a preset second rated time or not; and if receiving the gear switching instructionIf so, clearing the third temperature group acquired in the second time period, and returning to the step after the compressor continues to operate for a set time: respectively controlling the indoor coil temperature sensing bulb to detect the real-time temperature T of the indoor coiln' the outdoor coil pipe temperature sensing bulb detects the real-time temperature T of the outdoor coil pipew' and the environment thermometer bulb detects indoor real-time environment temperature Th', and according to Tn′、Tw' and Th' get a third temperature set.
In this embodiment, the air conditioner is set with a low wind level, a medium wind level and a high wind level in the second operation mode.
When the air conditioner works in a second operation mode, after the air conditioner is switched by a wind gear, the temperature of an indoor inner pipe and the temperature of an outdoor coil pipe are obviously changed, so that before the air conditioner enters fluorine-deficient protection, whether the air conditioner receives a windshield switching instruction needs to be detected, if the air conditioner does not receive the windshield switching instruction, the air conditioner enters the fluorine-deficient protection, and at the moment, if the working time (namely the continuous operation time) of the compressor is judged to be less than or equal to a second rated time, the compressor is stopped, and a fluorine-deficient fault code is displayed; if the air conditioner receives the windshield switching command, the third temperature group Z3 acquired in the second time interval T2 is cleared after the windshield switching is finished, and after the compressor continues to operate for a set time, for example, after the compressor continues to operate for 5 minutes, the operation returns to the step S401 to detect T againn′、Tw' and Th'the third temperature group Z3' after the windshield is switched is obtained ', and whether the air conditioner meets the second fluorine lack condition is judged according to Z3' and Z0, so that the fluorine lack misjudgment during heating of the air conditioner can be further reduced, the possibility of misprotection is further reduced, and the operation reliability of the air conditioner is improved.
Further, another embodiment of the present invention provides a method for protecting an air conditioner from fluorine deficiency, after step S20, the method includes:
when the air conditioner meets a preset starting detection condition, judging whether the air conditioner is in a third running mode; when the air conditioner is in a third operation mode, the air conditioner operates normally; the third operating mode is a ventilation mode or a sleep mode.
It can be understood that when the air conditioner meets the preset starting detection condition, the operation mode of the air conditioner is judged, if the air conditioner is in a refrigeration mode, a dehumidification mode or a heating mode, whether the air conditioner lacks fluorine is judged according to the preset fluorine-lacking condition corresponding to the operation mode of the air conditioner, and when the air conditioner is in other operation modes, such as a ventilation mode or a sleep mode, whether the air conditioner lacks fluorine is not required to be judged, and the air conditioner can normally operate. This embodiment is through judging whether the air conditioner need get into and lack fluorine and detect according to air conditioner operational mode, can improve and lack fluorine detection efficiency, and improved air conditioner operational reliability.
In an embodiment, an embodiment of the present invention further provides an air conditioner, including: the device comprises an outdoor unit, an indoor unit, a memory, a main controller and a fluorine-lacking protection program which is stored on the memory and driven by the main controller;
the outdoor unit is provided with an outdoor coil pipe temperature sensing bulb; the indoor unit is provided with an environment temperature sensing bag and an indoor coil pipe temperature sensing bag; when executed by the main controller, the fluorine deficiency protection program implements the steps of the fluorine deficiency protection method of the air conditioner in the above embodiment.
In an embodiment, an embodiment of the present invention further provides a fluorine deficiency protection device for an air conditioner, including: the controller comprises a memory, a processor and a fluorine-lacking protection program which is stored on the memory and driven by the processor, wherein the fluorine-lacking protection program realizes the steps of the fluorine-lacking protection method of the air conditioner in the embodiment when being executed by the main controller.
In addition, an embodiment of the present invention further provides a computer-readable storage medium, where a fluorine-deficient protection program is stored on the computer-readable storage medium, and when the fluorine-deficient protection program is executed by a main controller, the steps of the fluorine-deficient protection method for an air conditioner in the foregoing embodiments are implemented.
The method for implementing the fluorine-deficient protection program when executed by the main controller may be substantially the same as that of the embodiments of the fluorine-deficient protection method of the air conditioner of the present invention, and is not described herein again.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation method. Based on such understanding, the technical solution of the present invention essentially or contributing to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) as described above and includes several instructions for enabling a terminal device (which may be an air conditioner, a computer, a server, etc.) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A fluorine-deficient protection method of an air conditioner is characterized by comprising the following steps:
acquiring a first temperature group detected by a plurality of temperature sensing bulbs when a compressor is started; the first temperature group comprises initial temperature detected by each temperature sensing bulb in the air conditioner;
judging whether the air conditioner meets a preset starting detection condition or not according to the first temperature group;
when the air conditioner meets a preset starting detection condition, judging whether the air conditioner is in a first operation mode or a second operation mode;
when the air conditioner is in a first operation mode, acquiring a second temperature group detected by a plurality of temperature sensing bulbs, judging whether the air conditioner meets a preset first fluorine lack condition according to the first temperature group and the second temperature group, and entering fluorine lack protection when the air conditioner meets the preset first fluorine lack condition;
when the air conditioner is in a second operation mode, a third temperature group detected through a plurality of temperature sensing bulbs is obtained, whether the air conditioner meets a preset second fluorine lack condition or not is judged according to the first temperature group and the third temperature group, and when the air conditioner meets the preset second fluorine lack condition, fluorine lack protection is carried out.
2. The fluorine deficiency protection method of an air conditioner according to claim 1, wherein the acquiring a first temperature group detected by a plurality of temperature sensing bulbs when a compressor is turned on comprises:
when the compressor is started, the indoor coil temperature sensing bulb in the air conditioner is respectively controlled to detect the initial temperature T of the indoor coiln0Detecting the initial temperature T of the outdoor coil by an outdoor coil temperature sensing bulb in the air conditionerw0And detecting the indoor initial ambient temperature T by the ambient tube temperature sensing bulb in the air conditionerh0And according to Tn0、Tw0And Th0A first temperature set was obtained.
3. The fluorine-deficient protection method for an air conditioner according to claim 2, wherein said determining whether the air conditioner satisfies a predetermined startup detection condition according to the first temperature group comprises:
judging whether the indoor initial environment temperature in the first temperature group is within a preset temperature range or not, and judging whether the absolute value of the difference value between the indoor coil initial temperature in the first temperature group and the indoor initial environment temperature is smaller than or equal to a preset temperature difference characteristic value or not;
and if the indoor initial environment temperature is within a preset temperature range and the absolute value of the difference value between the indoor coil initial temperature and the indoor initial environment temperature is smaller than or equal to a preset temperature difference characteristic value, determining that the air conditioner meets a preset starting-up detection condition.
4. The method for fluorine deficiency protection of an air conditioner according to claim 2, wherein the step of obtaining a second temperature group detected by a plurality of thermal bulbs when the air conditioner is in a first operation mode, judging whether the air conditioner satisfies a preset first fluorine deficiency condition according to the first temperature group and the second temperature group, and entering the fluorine deficiency protection when the air conditioner satisfies the preset first fluorine deficiency condition comprises:
when the air conditioner is in a first operation mode, the indoor coil temperature sensing bulb is respectively controlled to detect the real-time temperature T of the indoor coilnThe outdoor coil pipe temperature sensing bulb detects the real-time temperature T of the outdoor coil pipewAnd the environment temperature sensing bulb detects the indoor real-time environment temperature ThAnd according to Tn、TwAnd ThObtaining a second temperature set; the first operation mode is a refrigeration mode or a dehumidification mode;
during a first period of operation of the compressor, T is calculated separatelyhAnd TnFirst temperature difference T1, Th0And Tn0And comparing the difference between the first temperature difference and the second temperature difference with a preset first characteristic value delta T1, and comparing T with the preset first characteristic value delta T1n0-TnComparing the T with a preset second characteristic value delta T2w-Tw0Comparing with a preset third characteristic value delta T3;
if T1-T2 is judged to be less than or equal to delta T1 continuously, Tn0-TnΔ T2 or less, and Tw-Tw0Determining that the air conditioner meets a preset first fluorine lack condition if the temperature is less than or equal to delta T3;
judging whether the working time of the compressor is less than or equal to a preset first rated time or not;
and when the working time of the compressor is less than or equal to a preset first rated time, the air conditioner sends out a fluorine lack signal and starts fluorine lack protection operation.
5. The fluorine-deficient protection method for air conditioner according to claim 4, wherein said judging whether the operation time of said compressor is less than or equal to the preset first rated time comprises:
detecting whether a gear switching instruction is received;
if the gear switching instruction is not received, executing the following steps: judging whether the working time of the compressor is less than or equal to a preset first rated time or not;
if a gear switching instruction is received, clearing the second temperature group acquired in the first time period, and after the compressor continues to operate for a set time, returning to the step: respectively controlling the indoor coil temperature sensing bulb to detect the real-time temperature T of the indoor coilnThe outdoor coil pipe temperature sensing bulb detects the real-time temperature T of the outdoor coil pipewAnd the environment temperature sensing bulb detects the indoor real-time environment temperature ThAnd according to Tn、TwAnd ThA second temperature set was obtained.
6. The method for fluorine deficiency protection of an air conditioner according to claim 2, wherein the step of obtaining a third temperature group detected by a plurality of thermal bulbs when the air conditioner is in a second operation mode, judging whether the air conditioner satisfies a preset second fluorine deficiency condition according to the first temperature group and the third temperature group, and entering the fluorine deficiency protection when the air conditioner satisfies the preset second fluorine deficiency condition comprises:
when the air conditioner is in a second operation mode, the indoor coil temperature sensing bulb is respectively controlled to detect the real-time temperature T of the indoor coiln' the outdoor coil pipe temperature sensing bulb detects the real-time temperature T of the outdoor coil pipew' and the environment thermometer bulb detects indoor real-time environment temperature Th', and according to Tn′、Tw' and Th' obtaining a third temperatureDegree group; the second operation mode is a heating mode;
during a second period of operation of the compressor, T is calculated separatelyn' and Th' third temperature difference T3, Tn0And Th0And comparing the fourth temperature difference T4 with a preset fourth characteristic value delta T4, and comparing T3-T4 with the preset fourth characteristic value delta T4n′-Tn0Comparing the T with a preset fifth characteristic value delta T5w0-Tw' comparing with a preset sixth characteristic value Δ T6;
if T3-T4 is judged to be less than or equal to delta T4 continuously, Tn′-Tn0Δ T5 or less, and Tw0-Tw' < delta T6, determining that the air conditioner meets a preset second fluorine lack condition;
judging whether the working time of the compressor is less than or equal to a preset second rated time or not;
and when the working time of the compressor is less than or equal to a preset second rated time, the air conditioner sends out a fluorine lack signal and starts fluorine lack protection operation.
7. The fluorine deficiency protection method of an air conditioner according to claim 6, wherein the judging whether the operation time of the compressor is less than or equal to a preset second rated time comprises:
detecting whether a gear switching instruction is received;
if the gear switching instruction is not received, executing the following steps: judging whether the working time of the compressor is less than or equal to a preset second rated time or not;
if a gear switching instruction is received, clearing the third temperature group acquired in the second time period, and after the compressor continues to operate for a set time, returning to the step: respectively controlling the indoor coil temperature sensing bulb to detect the real-time temperature T of the indoor coiln' the outdoor coil pipe temperature sensing bulb detects the real-time temperature T of the outdoor coil pipew' and the environment thermometer bulb detects indoor real-time environment temperature Th', and according to Tn′、Tw' and Th' get a third temperature set.
8. The fluorine-deficient protection method for an air conditioner according to claim 1, wherein after determining whether the air conditioner satisfies a predetermined startup detection condition according to the first temperature group, the method further comprises:
when the air conditioner meets a preset starting detection condition, judging whether the air conditioner is in a third running mode;
when the air conditioner is in a third operation mode, the air conditioner operates normally; the third operating mode is a ventilation mode or a sleep mode.
9. An air conditioner, comprising: the device comprises an outdoor unit, an indoor unit, a memory, a main controller and a fluorine-lacking protection program which is stored on the memory and driven by the main controller;
the outdoor unit is provided with an outdoor coil pipe temperature sensing bulb; the indoor unit is provided with an environment temperature sensing bag and an indoor coil pipe temperature sensing bag; the fluorine deficiency protection program when executed by the main controller implements the steps of the fluorine deficiency protection method of the air conditioner according to any one of claims 1 to 8.
10. A computer-readable storage medium, wherein the computer-readable storage medium stores thereon a fluorine-deficient protection program, which when executed by a main controller, implements the steps of the fluorine-deficient protection method of an air conditioner according to any one of claims 1 to 8.
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| CN113719982A (en) * | 2020-05-26 | 2021-11-30 | 广东美的制冷设备有限公司 | Air conditioner detection method, control method and device and air conditioning equipment |
| WO2023116463A1 (en) * | 2021-12-20 | 2023-06-29 | 青岛海尔空调电子有限公司 | Control method and apparatus for air conditioner, and air conditioner and storage medium |
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