CN104061656B - Fluorine-deficiency protection method and device for air conditioner - Google Patents
Fluorine-deficiency protection method and device for air conditioner Download PDFInfo
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- CN104061656B CN104061656B CN201410317388.8A CN201410317388A CN104061656B CN 104061656 B CN104061656 B CN 104061656B CN 201410317388 A CN201410317388 A CN 201410317388A CN 104061656 B CN104061656 B CN 104061656B
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- 238000000034 method Methods 0.000 title claims abstract description 38
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 172
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 172
- 239000011737 fluorine Substances 0.000 claims abstract description 172
- 238000004378 air conditioning Methods 0.000 claims abstract description 161
- 230000001143 conditioned effect Effects 0.000 claims description 89
- 238000001514 detection method Methods 0.000 claims description 32
- 239000006200 vaporizer Substances 0.000 claims description 17
- 238000004804 winding Methods 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000007812 deficiency Effects 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 7
- 230000000875 corresponding effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 238000002560 therapeutic procedure Methods 0.000 description 4
- 238000010792 warming Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
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Abstract
The invention discloses a fluorine deficiency protection method and device for an air conditioner. The air conditioner fluorine deficiency protection method comprises the following steps: detecting a first temperature difference between the environment temperature of the indoor environment where the air conditioner is located and the temperature of a first evaporator tube of an air conditioner evaporator, wherein the temperature of the first evaporator tube is the temperature of the evaporator tube of the evaporator at a first moment; judging whether the first temperature difference meets a first preset condition or not; detecting a second temperature difference between the temperature of the first evaporator tube and the temperature of a second evaporator tube of the air-conditioning evaporator, wherein the temperature of the second evaporator tube is the temperature of the evaporator tube of the air-conditioning evaporator at a second moment; judging whether the second temperature difference meets a second preset condition or not; and if the first temperature difference meets the first preset condition and the second temperature difference meets the second preset condition, controlling the air conditioner to execute fluorine-lacking protection. The invention solves the problem that the temperature of the compressor winding is easily overhigh in the related technology.
Description
Technical field
The present invention relates to field of air conditioning, in particular to a kind of lack of fluorine of air-conditioners guard method and device.
Background technology
In the related, because air-conditioning is in actual moving process, it is understood that there may be the micro- leakage fluorine of valve and other positions
Etc. phenomenon, therefore air-conditioning may perform scarce fluorine operation.And be difficult to discover due to lacking fluorine operation, therefore in the related, only
When the refrigerating/heating effect of air-conditioning is poor, lack of fluorine of air-conditioners can be just found.In that way it is possible to cause the compressor in air-conditioning around
Group temperature is too high, or even causes compressor to burn.
The problem too high for being easily caused compressor winding temperature in correlation technique, not yet proposes effectively to solve at present
Scheme.
The content of the invention
Present invention is primarily targeted at provide a kind of lack of fluorine of air-conditioners guard method and device, to solve correlation technique in hold
It is easily caused the too high problem of compressor winding temperature.
To achieve these goals, according to an aspect of the invention, there is provided a kind of lack of fluorine of air-conditioners guard method.The party
Method includes：First temperature of the first evaporator tube temperature of the ambient temperature and A/C evaporator of indoor environment residing for detection air-conditioning
Difference, wherein, the first evaporator tube temperature is evaporator tube temperature of the vaporizer at the first moment；Judge whether the first temperature difference meets
One is pre-conditioned；Detect that the first evaporator tube temperature is poor with the second temperature of the second evaporator tube temperature of A/C evaporator, wherein, the
Two evaporator tube temperature are evaporator tube temperature of the A/C evaporator at the second moment；Judge whether second temperature difference meets second and preset
Condition；And first is pre-conditioned and the poor satisfaction second of second temperature is pre-conditioned if it is judged that the first temperature difference meets, then
Control air-conditioning is performed and lacks fluorine protection.
Further, the of ambient temperature indoor residing for detection air-conditioning and the first evaporator tube temperature of A/C evaporator
Before one temperature difference, the lack of fluorine of air-conditioners guard method also includes：The continuous working period of the compressor in detection air-conditioning；And sentence
Whether the continuous working period of disconnected compressor reaches Preset Time, wherein, if it is judged that the continuous working period of compressor reach
To Preset Time, then the ambient temperature of indoor environment residing for air-conditioning and the first of the first evaporator tube temperature of A/C evaporator is detected
Temperature difference.
Further, judge the first temperature difference whether meet first it is pre-conditioned including：Judge in the first preset time period
Whether interior multiple first temperature differences meet first pre-conditioned, judge whether second temperature difference meets the second pre-conditioned bag
Include：Judge whether the difference of the multiple second temperatures in the second preset time period meets second pre-conditioned, if it is judged that first
Temperature difference satisfaction first is pre-conditioned and the poor satisfaction second of second temperature is pre-conditioned, then the scarce fluorine of control air-conditioning execution is protected and wrapped
Include：If it is judged that multiple first temperature differences in the first preset time period to meet first pre-conditioned and when second is default
Between multiple second temperatures difference in section meet second pre-conditioned, then control air-conditioning and perform to lack fluorine protection.
Further, after control air-conditioning performs scarce fluorine protection, the lack of fluorine of air-conditioners guard method also includes：Detection air-conditioning
Continuously perform the number of times of scarce fluorine protection；Judge that air-conditioning continuously performs whether the number of times of scarce fluorine protection meets preset times；And such as
Fruit judges that air-conditioning continuously performs the number of times of scarce fluorine protection and meets preset times, then control air-conditioning and exit scarce fluorine protection.
Further, continuously perform after whether the number of times of scarce fluorine protection meet preset times judging air-conditioning, the air-conditioning
Scarce fluorine guard method also includes：If it is judged that the number of times that air-conditioning continuously performs scarce fluorine protection is unsatisfactory for preset times, then control
Air-conditioning is performed and lacks fluorine warning.
To achieve these goals, according to a further aspect in the invention, there is provided a kind of lack of fluorine of air-conditioners protection device.The dress
Put including：First detector unit, for detecting the ambient temperature of indoor environment residing for air-conditioning and the first evaporation of A/C evaporator
First temperature difference of device Guan Wen, wherein, the first evaporator tube temperature is evaporator tube temperature of the A/C evaporator at the first moment；First
Judging unit, for judging it is pre-conditioned whether the first temperature difference meets first；Second detector unit, evaporates for detection first
The second temperature of the second evaporator tube temperature of device Guan Wenyu A/C evaporators is poor, wherein, the second evaporator tube temperature is air-conditioning evaporation
Evaporator tube temperature of the device at the second moment；Second judging unit, for judging it is pre-conditioned whether second temperature difference meets second；
And control unit, for judging that the first temperature difference satisfaction first is pre-conditioned and the poor satisfaction second of second temperature presets bar
During part, control air-conditioning is performed and lacks fluorine protection.
Further, the lack of fluorine of air-conditioners protection device also includes：3rd detector unit, for indoor residing for detection air-conditioning
Ambient temperature and A/C evaporator the first evaporator tube temperature the first temperature difference before, compressor in detection air-conditioning is held
Continuous run time；And the 3rd judging unit, for judging whether the continuous working period of compressor reaches Preset Time, its
In, the first detector unit is additionally operable to when Preset Time is reached in the continuous working period for judging compressor, residing for detection air-conditioning
First temperature difference of the ambient temperature of indoor environment and the first evaporator tube temperature of A/C evaporator.
Further, the first judging unit is additionally operable to judge whether is multiple first temperature differences in the first preset time period
Meet first pre-conditioned；Second judging unit is additionally operable to judge whether is multiple second temperatures difference in the second preset time period
Meet second pre-conditioned；Control unit is additionally operable to judging the satisfaction of multiple first temperature differences in the first preset time period
First it is pre-conditioned and in the second preset time period multiple second temperatures difference meet second it is pre-conditioned when, control air-conditioning hold
The scarce fluorine protection of row.
Further, the lack of fluorine of air-conditioners protection device also includes：4th detector unit, for performing in control air-conditioning fluorine is lacked
After protection, detect that air-conditioning continuously performs the number of times of scarce fluorine protection；4th judging unit, for judging that air-conditioning continuously performs scarce fluorine
Whether the number of times of protection meets preset times；And control unit be additionally operable to judge air-conditioning continuously perform the protection of scarce fluorine time
When number meets preset times, control air-conditioning exits scarce fluorine protection.
Further, the lack of fluorine of air-conditioners protection device also includes：Alarm unit, for judging that air-conditioning continuously performs scarce fluorine
Whether the number of times of protection is met after preset times, is judging that air-conditioning continuously performs the number of times of scarce fluorine protection and do not meet default time
During number, control air-conditioning is performed and lacks fluorine warning.
By the present invention, using the ambient temperature and the first vaporizer of A/C evaporator of indoor environment residing for detection air-conditioning
First temperature difference of Guan Wen, wherein, the first evaporator tube temperature is evaporator tube temperature of the A/C evaporator at the first moment；Judge
It is pre-conditioned whether one temperature difference meets first；Detect the first evaporator tube temperature with the second evaporator tube temperature of A/C evaporator
Second temperature is poor, wherein, the second evaporator tube temperature is evaporator tube temperature of the A/C evaporator at the second moment；Judge second temperature
It is pre-conditioned whether difference meets second；And first is pre-conditioned and second temperature is poor full if it is judged that the first temperature difference meets
Foot second is pre-conditioned, then control air-conditioning and perform scarce fluorine protection, solves and be easily caused in correlation technique in correlation technique compression
The too high problem of machine winding temperature, and then reached the effect for preventing compressor winding temperature too high.
Description of the drawings
The accompanying drawing for constituting the part of the application is used for providing a further understanding of the present invention, the schematic reality of the present invention
Apply example and its illustrate, for explaining the present invention, not constituting inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the schematic diagram of lack of fluorine of air-conditioners protection device according to embodiments of the present invention；
Fig. 2 is the schematic diagram of preferred lack of fluorine of air-conditioners protection device according to embodiments of the present invention；
Fig. 3 is the flow chart of lack of fluorine of air-conditioners guard method according to embodiments of the present invention；And
Fig. 4 is the flow chart of preferred lack of fluorine of air-conditioners guard method according to embodiments of the present invention.
Specific embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Below with reference to the accompanying drawings and in conjunction with the embodiments describing the present invention in detail.
In order that those skilled in the art is better understood from the present invention program, below in conjunction with the embodiment of the present invention
Accompanying drawing, is clearly and completely described to the technical scheme in the embodiment of the present invention, it is clear that described embodiment is only
The embodiment of a part of the invention, rather than the embodiment of whole.Based on the embodiment in the present invention, in ordinary skill
Personnel do not make the every other embodiment obtained under the premise of creative work, should all belong to the protection model of the present invention
Enclose.
It should be noted that description and claims of this specification and the term " first " in above-mentioned accompanying drawing, "
Two " it is etc. the object for distinguishing similar, without for describing specific order or precedence.It should be appreciated that so using
Data can exchange in the appropriate case, so as to embodiments of the invention described herein can with except illustrating here or
Order beyond those of description is implemented.Additionally, term " comprising " and " having " and their any deformation, it is intended that cover
Lid is non-exclusive to be included.
Embodiments in accordance with the present invention, there is provided a kind of lack of fluorine of air-conditioners protection device, the lack of fluorine of air-conditioners protection device is used for
In lack of fluorine of air-conditioners perform lack fluorine protection, such that it is able to avoid compressor winding temperature too high, so can prevent compressor because
Burn out for winding temperature is too high.It should be noted that the lack of fluorine of air-conditioners protection device of the present invention can be used for fixed frequency air conditioner
Perform and lack fluorine protection.
Fig. 1 is the schematic diagram of lack of fluorine of air-conditioners protection device according to embodiments of the present invention.
As shown in figure 1, the device includes：First detector unit 10, the first judging unit 20, the second detector unit 30,
Two judging units 40 and control unit 50.
First detector unit 10 can be used for detecting the of ambient temperature and the A/C evaporator of indoor environment residing for air-conditioning
First temperature difference of one evaporator tube temperature.
Wherein, the first evaporator tube temperature can be evaporator tube temperature of the A/C evaporator at the first moment, specifically, first
Moment can be that air-conditioning enters the moment lacked after fluorine detection certain period of time, or the first moment can be the compression in air-conditioning
Machine is opened and the moment after continuous service certain period of time.
In embodiments of the present invention, the ambient temperature of indoor environment residing for air-conditioning and sky can be detected by temperature sensor
The first temperature difference of the first evaporator tube temperature of vaporizer is adjusted, and detects the ambient temperature and air-conditioning of indoor environment residing for air-conditioning
First temperature difference of the first evaporator tube temperature of vaporizer can include：The ambient temperature of indoor environment residing for detection air-conditioning, its
In, the ambient temperature of indoor environment residing for air-conditioning can be detected by the first temperature sensor, and the first temperature sensor can
At evaporator surface air intake in be arranged on air-conditioning；First evaporator tube temperature of detection A/C evaporator, wherein it is possible to pass through
Second temperature sensor detects the first evaporator tube temperature of A/C evaporator, and second temperature sensor can be arranged on vaporizer
Coil pipe on, the first evaporator tube temperature can be the evaporator tube temperature of the coil pipe at the first moment of vaporizer；According to what is detected
First evaporator tube temperature of the ambient temperature of indoor environment residing for air-conditioning and the A/C evaporator for detecting calculates the first temperature difference.
For example, it is assumed that T1 represents ambient temperature, T2 represents the first evaporator tube temperature, then the first temperature difference △ T1 can be △
T1=T1-T2.
First judging unit 20 can be used for judging whether the first temperature difference meets first pre-conditioned.
For example, first it is pre-conditioned can be the first fiducial temperature, wherein, the first fiducial temperature can be in (2～8) DEG C
Arbitrary temperature value.Judge the first temperature difference whether meet first it is pre-conditioned can be judge the first temperature difference whether less than etc.
In the first fiducial temperature, wherein, the first temperature difference shows that the first temperature difference meets first and presets less than or equal to the first fiducial temperature
Condition；It is pre-conditioned that first temperature difference shows that the first temperature difference is unsatisfactory for first more than the first fiducial temperature.
Second detector unit 30 can be used for detecting the second evaporator tube temperature of the first evaporator tube temperature and A/C evaporator
Second temperature it is poor.
Wherein, the second evaporator tube temperature can be evaporator tube temperature of the A/C evaporator at the second moment.Second moment can
Think the moment before the first moment.For example, the second moment can be that air-conditioning enters the moment lacked before fluorine detection, or second
Moment can be the start-up time of the compressor in air-conditioning.
In embodiments of the present invention, the of the first evaporator tube temperature and A/C evaporator can be detected by temperature sensor
The second temperature of two evaporator tube temperature is poor, wherein it is possible to pass through second temperature sensor detects respectively A/C evaporator first
The gentle second evaporator tube temperature of evaporator tube, can be by it after the gentle second evaporator tube using warming therapy of the first evaporator tube is detected
Storage is in memory.Because second temperature sensor can be arranged on the coil pipe of vaporizer, therefore the second evaporator tube temperature
Can be the Guan Wen of the coil pipe at the second moment of vaporizer.Detecting the gentle second evaporator tube using warming therapy of the first evaporator tube
Afterwards, both differences can be calculated, obtains second temperature poor.
For example, T2 represents the first evaporator tube temperature, and T0 represents the second evaporator tube temperature, then second temperature difference △ T2 can be
△ T2=T2-T0.
It is pre-conditioned that second judging unit 40 can be used for judging whether second temperature difference meets second.
In embodiments of the present invention, second it is pre-conditioned can be pre-conditioned with first identical, or second pre-conditioned
Can be pre-conditioned from first different.Wherein, second it is pre-conditioned can be the second fiducial temperature, for example, the second fiducial temperature
Can be the arbitrary temperature value in (2～8) DEG C, the second fiducial temperature can be identical from the first fiducial temperature or different.Judge
Second temperature difference whether meet second it is pre-conditioned can judge that whether second temperature difference is less than or equal to the second fiducial temperature, its
In, it is pre-conditioned that second temperature difference shows that second temperature difference meets second less than or equal to the second fiducial temperature；Second temperature difference is big
Show that second temperature difference is unsatisfactory for second in the second fiducial temperature pre-conditioned.
Control unit 50 can be used for judging the first temperature difference the first pre-conditioned and poor satisfaction of second temperature of satisfaction
Second it is pre-conditioned when, control air-conditioning perform lack fluorine protection.
It should be noted that in embodiments of the present invention, first is pre-conditioned and second pre-conditioned while when meeting, then
Control air-conditioning is performed and lacks fluorine protection, else if only any one condition meets in the two conditions, or the two conditions are equal
It is unsatisfactory for, then does not control air-conditioning and perform scarce fluorine protection.
When control air-conditioning is performed and lacks fluorine protection, inside and outside blower fan, the display of air-conditioning can be respectively controlled according to control signal
Interface, compressor and cross valve etc. make corresponding actions.For example, compressor and outer blower fan are out of service, and cross valve does not commutate, interior
Blower fan is continued to run with, and can on a display screen show scarce fluorine failure.
By the embodiment of the present invention, the effect for preventing compressor winding temperature too high is reached, and the lack of fluorine of air-conditioners is protected
Protection unit has the effect of highly versatile.
Fig. 2 is the schematic diagram of preferred lack of fluorine of air-conditioners protection device according to embodiments of the present invention.
As shown in Fig. 2 the embodiment can be used as the preferred implementation of embodiment illustrated in fig. 1, the air-conditioning of the embodiment
Scarce fluorine protection device except including the first detector unit 10 of first embodiment, the first judging unit 20, the second detector unit 30,
Outside second judging unit 40 and control unit 50, also including the 3rd detector unit 60, the 3rd judging unit 70.
The effect and first of the first judging unit 20, the second detector unit 30, the second judging unit 40 and control unit 50
It is identical in embodiment, will not be described here.
3rd detector unit 60 can be used in ambient temperature indoor residing for detection air-conditioning and the first of A/C evaporator
Before first temperature difference of evaporator tube temperature, the continuous working period of the compressor in air-conditioning is detected.
In the first temperature difference of the first evaporator tube temperature of ambient temperature and A/C evaporator indoor residing for detection air-conditioning
Before, the continuous working period of the compressor in air-conditioning can be detected.Wherein, the run time of compressor can pass through timer
Carry out timing.The continuous working period of compressor can be compressor from start-up time to the current time for running without interruption
Time, or its can be compressor from reset time to run without interruption current time time.
3rd judging unit 70 can be used for judging whether the continuous working period of compressor reaches Preset Time.
Wherein, if it is judged that the continuous working period of compressor reaches Preset Time, then indoor ring residing for air-conditioning is detected
First temperature difference of the ambient temperature in border and the first evaporator tube temperature of A/C evaporator.
For example, Preset Time can be any time in (0～15) min, so that Preset Time is as 15min as an example, judge
Whether the continuous working period of compressor reaches Preset Time may determine that whether the continuous working period of compressor reaches
15min.Wherein, if it is judged that the continuous working period of compressor reaches 15min, then the ring of indoor environment residing for air-conditioning is detected
First temperature difference of the first evaporator tube temperature of border temperature and A/C evaporator, if it is judged that the continuous working period of compressor
Not up to 15min, then continue to detect and judge whether the continuous working period of compressor of air conditioner reaches Preset Time, until air-conditioning
Till the continuous working period of compressor reaches Preset Time.
Wherein, the first detector unit 10 can be also used for reaching Preset Time in the continuous working period for judging compressor
When, detect the first temperature difference of the ambient temperature of indoor environment residing for air-conditioning and the first evaporator tube temperature of A/C evaporator.
Specifically, before air-conditioning start, the ring of the indoor environment that the temperature sensor being disposed in the interior can be detected
Border temperature, and the evaporator tube temperature of A/C evaporator that the temperature sensor being disposed in the interior can also be detected, in sky
After tuning to open machine, the evaporator tube temperature of ambient temperature that the temperature sensor detects and A/C evaporator can be read, and can
To calculate the temperature difference of the two temperature.Wherein, two temperature the temperature difference absolute value less than or equal to (0～3) DEG C in it is arbitrary
During temperature value, and compressor is opened and continuously run after 0～15min, it is allowed to which air-conditioning is entered and lacks the fluorine protection detection operation phase,
That is, lack fluorine protective condition and control air-conditioning execution when meeting and lacking fluorine protective condition into the detection in previous embodiment and lack
The stage of fluorine protection.
By the embodiment of the present invention, after the continuous working period of compressor reaches Preset Time, then air-conditioning is allowed to enter
Enter the scarce fluorine protection detection operation phase, as such, it is possible to enter lack the fluorine protection detection operation phase when compressor operating is stable, from
And can avoid causing the situation of error because compressor operating is unstable.
Preferably, in embodiments of the present invention, the first judging unit 20 can be also used for judging in the first preset time period
It is pre-conditioned whether interior multiple first temperature differences meet first.Second judging unit 40 can be also used for judging default second
It is pre-conditioned whether the multiple second temperatures difference in the time period meets second.Control unit 50 can be also used for judging
It is pre-conditioned and in the second preset time period multiple second that multiple first temperature differences in one preset time period meet first
When temperature difference satisfaction second is pre-conditioned, control air-conditioning is performed and lacks fluorine protection.
Specifically, so that the first preset time period and the second preset time period are for the identical time period as an example, can be first
Multiple the first temperature differences not in the same time are obtained in time period and multiple second temperatures not in the same time are poor, it is possible to judged respectively
Whether aforesaid multiple first temperature differences and multiple second temperatures difference meet respectively the pre-conditioned of oneself.If it is judged that aforementioned
Multiple first temperature differences and multiple second temperature difference do not meet the pre-conditioned of oneself, then control air-conditioning perform lack fluorine protect
Shield, does not otherwise control air-conditioning and performs scarce fluorine protection.
So, it is poor by the temperature difference of repeated detection first and second temperature, can avoid due to caused by occasionality certain
The situation that the scarce fluorine that temperature difference and corresponding second temperature difference meet the pre-conditioned of oneself and cause is protected by mistake.
For example, the first preset time period and the second preset time period can be with same continuous 90s, i.e. first it is default when
Between the initial time and finish time of section and the second preset time period correspond to identical, and both duration can be 90s.Can
With appointing in lasting 90s detects whether multiple first temperature differences and multiple second temperatures difference are respectively smaller than equal to (2～8) DEG C
One temperature value.
Preferably, in embodiments of the present invention, the lack of fluorine of air-conditioners protection device can also include：4th detector unit and
Four judging units.
4th detector unit can be used for after control air-conditioning performs scarce fluorine protection, and detection air-conditioning continuously performs scarce fluorine and protects
The number of times of shield.Specifically, can detect that air-conditioning continuously performs the number of times of scarce fluorine protection in the once operation of air-conditioning.Wherein, lack
The number of times of fluorine protection can be obtained by rolling counters forward.
4th judging unit can be used for judging that air-conditioning continuously performs whether the number of times of scarce fluorine protection reaches preset times.Example
Such as, preset times can be 2～4 times, as a example by 2 times, it can be determined that whether air-conditioning continuously performs the number of times of scarce fluorine protection less than 2
It is secondary.If it is determined that air-conditioning continuously performs the number of times of scarce fluorine protection less than 2 times, then control air-conditioning exits scarce fluorine protection.For example, lacking
When fluorine is protected, compressor shutdown can be controlled, and when judging that air-conditioning continuously performs the number of times of scarce fluorine protection less than 2 times, can be with
Weight of compressor is controlled in preset time period to open, and for example, can be restarted with controlling compressor after 3min.
Control unit 50 can be also used for when judging that air-conditioning continuously performs the number of times of scarce fluorine protection and reaches preset times,
Control air-conditioning exits scarce fluorine protection.
Preferably, in embodiments of the present invention, the lack of fluorine of air-conditioners protection device can also include：Alarm unit.
Alarm unit can be also used for judge air-conditioning continuously perform the number of times of scarce fluorine protection whether meet preset times it
Afterwards, when judging that air-conditioning continuously performs the number of times of scarce fluorine protection and is not up to preset times, control air-conditioning performs and lacks fluorine and report to the police.
Control air-conditioning is performed when lacking fluorine warning, is not controlled compressor and is restarted, and scarce fluorine is reported to the police and can show malfunction with display
Mode report to the police.
Embodiments in accordance with the present invention, there is provided a kind of lack of fluorine of air-conditioners guard method, the lack of fluorine of air-conditioners guard method is used for
In lack of fluorine of air-conditioners perform lack fluorine protection, such that it is able to avoid compressor winding temperature too high, so can prevent compressor because
Burn out for winding temperature is too high.It should be noted that the lack of fluorine of air-conditioners guard method that the embodiment of the present invention is provided can lead to
Cross the lack of fluorine of air-conditioners protection device of the embodiment of the present invention to perform, the lack of fluorine of air-conditioners protection device of the embodiment of the present invention can also be used
In the lack of fluorine of air-conditioners guard method for performing the embodiment of the present invention.It should be noted that the lack of fluorine of air-conditioners guard method can be used for
Fixed frequency air conditioner is performed and lacks fluorine protection.
Fig. 3 is the flow chart of lack of fluorine of air-conditioners guard method according to embodiments of the present invention.
As shown in figure 3, the method includes steps S302 to step S310：
Step S302, detects the ambient temperature of indoor environment residing for air-conditioning and the first evaporator tube temperature of A/C evaporator
First temperature difference.
Wherein, the first evaporator tube temperature can be evaporator tube temperature of the A/C evaporator at the first moment, specifically, first
Moment can be that air-conditioning enters the moment lacked after fluorine detection certain period of time, or the first moment can be the compression in air-conditioning
Machine is opened and the moment after continuous service certain period of time.
In embodiments of the present invention, the ambient temperature of indoor environment residing for air-conditioning and sky can be detected by temperature sensor
The first temperature difference of the first evaporator tube temperature of vaporizer is adjusted, and detects the ambient temperature and air-conditioning of indoor environment residing for air-conditioning
First temperature difference of the first evaporator tube temperature of vaporizer can include：The ambient temperature of indoor environment residing for detection air-conditioning, its
In, the ambient temperature of indoor environment residing for air-conditioning can be detected by the first temperature sensor, and the first temperature sensor can
At evaporator surface air intake in be arranged on air-conditioning；First evaporator tube temperature of detection A/C evaporator, wherein it is possible to pass through
Second temperature sensor detects the first evaporator tube temperature of A/C evaporator, and second temperature sensor can be arranged on vaporizer
Coil pipe on, the first evaporator tube temperature can be the Guan Wen of the coil pipe at the first moment of vaporizer；According to the air-conditioning institute for detecting
The ambient temperature of place's indoor environment and the first evaporator tube temperature of the A/C evaporator for detecting calculate the first temperature difference.
For example, it is assumed that T1 represents ambient temperature, T2 represents the first evaporator tube temperature, then the first temperature difference △ T1 can be △
T1=T1-T2.
Step S304, judges whether the first temperature difference meets first pre-conditioned.
For example, first it is pre-conditioned can be the first fiducial temperature, wherein, the first fiducial temperature can be in (2～8) DEG C
Arbitrary temperature value.Judge the first temperature difference whether meet first it is pre-conditioned can be judge the first temperature difference whether less than etc.
In the first fiducial temperature, wherein, the first temperature difference shows that the first temperature difference meets first and presets less than or equal to the first fiducial temperature
Condition；It is pre-conditioned that first temperature difference shows that the first temperature difference is unsatisfactory for first more than the first fiducial temperature.
Step S306, detects that the first evaporator tube temperature is poor with the second temperature of the second evaporator tube temperature of A/C evaporator.
Wherein, the second evaporator tube temperature can be evaporator tube temperature of the A/C evaporator at the second moment.Second moment can
Think the moment before the first moment.For example, the second moment can be that air-conditioning enters the moment lacked before fluorine detection, or second
Moment can be the start-up time of the compressor in air-conditioning.
In embodiments of the present invention, the of the first evaporator tube temperature and A/C evaporator can be detected by temperature sensor
The second temperature of two evaporator tube temperature is poor, wherein it is possible to pass through second temperature sensor detects respectively A/C evaporator first
The gentle second evaporator tube temperature of evaporator tube, can be by it after the gentle second evaporator tube using warming therapy of the first evaporator tube is detected
Storage is in memory.Because second temperature sensor can be arranged on the coil pipe of vaporizer, therefore the second evaporator tube temperature
Can be the Guan Wen of the coil pipe at the second moment of vaporizer.Detecting the gentle second evaporator tube using warming therapy of the first evaporator tube
Afterwards, both differences can be calculated, obtains second temperature poor.
For example, T2 represents the first evaporator tube temperature, and T0 represents the second evaporator tube temperature, then second temperature difference △ T2 can be
△ T2=T2-T0.
Step S308, judges whether second temperature difference meets second pre-conditioned.
In embodiments of the present invention, second it is pre-conditioned can be pre-conditioned with first identical, or second pre-conditioned
Can be pre-conditioned from first different.Wherein, second it is pre-conditioned can be the second fiducial temperature, for example, the second fiducial temperature
Can be the arbitrary temperature value in (2～8) DEG C, the second fiducial temperature can be identical from the first fiducial temperature or different.Judge
Second temperature difference whether meet second it is pre-conditioned can judge that whether second temperature difference is less than or equal to the second fiducial temperature, its
In, it is pre-conditioned that second temperature difference shows that second temperature difference meets second less than or equal to the second fiducial temperature；Second temperature difference is big
Show that second temperature difference is unsatisfactory for second in the second fiducial temperature pre-conditioned.
Step S310, if it is judged that the first temperature difference meets, first is pre-conditioned and the poor satisfaction second of second temperature is preset
Condition, then control air-conditioning and perform scarce fluorine protection.
It should be noted that in embodiments of the present invention, first is pre-conditioned and second pre-conditioned while when meeting, then
Control air-conditioning is performed and lacks fluorine protection, else if only any one condition meets in the two conditions, or the two conditions are equal
It is unsatisfactory for, then does not control air-conditioning and perform scarce fluorine protection.
When control air-conditioning is performed and lacks fluorine protection, inside and outside blower fan, the display of air-conditioning can be respectively controlled according to control signal
Interface, compressor and cross valve etc. make corresponding actions.For example, compressor and outer blower fan are out of service, and cross valve does not commutate, interior
Blower fan is continued to run with, and can on a display screen show scarce fluorine failure.
By the embodiment of the present invention, the effect for preventing compressor winding temperature too high is reached, and the lack of fluorine of air-conditioners is protected
Maintaining method has the effect of highly versatile.
Fig. 4 is the flow chart of preferred lack of fluorine of air-conditioners guard method according to embodiments of the present invention.
As shown in figure 4, the lack of fluorine of air-conditioners guard method includes steps S402 to step S414, the embodiment can be with
As the preferred implementation of embodiment illustrated in fig. 3.
Step S402, detects the continuous working period of the compressor in air-conditioning.
In the first temperature difference of the first evaporator tube temperature of ambient temperature and A/C evaporator indoor residing for detection air-conditioning
Before, the continuous working period of the compressor in air-conditioning can be detected.Wherein, the run time of compressor can pass through timer
Carry out timing.The continuous working period of compressor can be compressor from start-up time to the current time for running without interruption
Time, or its can be compressor from reset time to run without interruption current time time.
Whether step S404, the continuous working period for judging compressor reaches Preset Time.
Wherein, if it is judged that the continuous working period of compressor reaches Preset Time, then indoor ring residing for air-conditioning is detected
First temperature difference of the ambient temperature in border and the first evaporator tube temperature of A/C evaporator.That is, execution step S406.
For example, Preset Time can be any time in (0～15) min, so that Preset Time is as 15min as an example, judge
Whether the continuous working period of compressor reaches Preset Time may determine that whether the continuous working period of compressor reaches
15min.Wherein, if it is judged that the continuous working period of compressor reaches 15min, then the ring of indoor environment residing for air-conditioning is detected
First temperature difference of the first evaporator tube temperature of border temperature and A/C evaporator, if it is judged that the continuous working period of compressor
Not up to 15min, then continue to detect and judge whether the continuous working period of compressor of air conditioner reaches Preset Time, until air-conditioning
Till the continuous working period of compressor reaches Preset Time.
Step S406 to step S414, respectively with S302 the step of embodiment illustrated in fig. 3 to step S310, no longer go to live in the household of one's in-laws on getting married by here
State.
Specifically, before air-conditioning start, the ring of the indoor environment that the temperature sensor being disposed in the interior can be detected
Border temperature, and the evaporator tube temperature of A/C evaporator that the temperature sensor being disposed in the interior can also be detected, in sky
After tuning to open machine, the evaporator tube temperature of ambient temperature that the temperature sensor detects and A/C evaporator can be read, and can
To calculate the temperature difference of the two temperature.Wherein, two temperature the temperature difference absolute value less than or equal to (0～3) DEG C in it is arbitrary
During temperature value, and compressor is opened and continuously run after 0～15min, it is allowed to which air-conditioning is entered and lacks the fluorine protection detection operation phase,
That is, lack fluorine protective condition and control air-conditioning execution when meeting and lacking fluorine protective condition into the detection in previous embodiment and lack
The stage of fluorine protection.
By the embodiment of the present invention, after the continuous working period of compressor reaches Preset Time, then air-conditioning is allowed to enter
Enter the scarce fluorine protection detection operation phase, as such, it is possible to enter lack the fluorine protection detection operation phase when compressor operating is stable, from
And can avoid causing the situation of error because compressor operating is unstable.
Preferably, in embodiments of the present invention, judge whether the first temperature difference meets first and pre-conditioned can include：Sentence
It is pre-conditioned whether multiple first temperature differences in the first preset time period of breaking meet first.Judge whether second temperature difference is full
Foot second is pre-conditioned can be included：Judge whether the difference of the multiple second temperatures in the second preset time period meets second and preset
Condition.If it is judged that the first temperature difference meets, first is pre-conditioned and the poor satisfaction second of second temperature is pre-conditioned, then control
Air-conditioning performs scarce fluorine protection can be included：If it is judged that multiple first temperature differences in the first preset time period meet first
Pre-conditioned and in the second preset time period multiple second temperatures difference satisfaction second is pre-conditioned, then control air-conditioning execution and lack
Fluorine is protected.Wherein, the first preset time period and the second preset time period can be the identical time period.
Specifically, so that the first preset time period and the second preset time period are for the identical time period as an example, can be first
Multiple the first temperature differences not in the same time are obtained in time period and multiple second temperatures not in the same time are poor, it is possible to judged respectively
Whether aforesaid multiple first temperature differences and multiple second temperatures difference meet respectively the pre-conditioned of oneself.If it is judged that aforementioned
Multiple first temperature differences and multiple second temperature difference do not meet the pre-conditioned of oneself, then control air-conditioning perform lack fluorine protect
Shield, does not otherwise control air-conditioning and performs scarce fluorine protection.
So, it is poor by the temperature difference of repeated detection first and second temperature, can avoid due to caused by occasionality certain
The situation that the scarce fluorine that temperature difference and corresponding second temperature difference meet the pre-conditioned of oneself and cause is protected by mistake.
For example, the first preset time period and the second preset time period can be with same continuous 90s, i.e. first it is default when
Between the initial time and finish time of section and the second preset time period correspond to identical, and both duration can be 90s.Can
With appointing in lasting 90s detects whether multiple first temperature differences and multiple second temperatures difference are respectively smaller than equal to (2～8) DEG C
One temperature value.
Preferably, in embodiments of the present invention, after control air-conditioning performs scarce fluorine protection, the lack of fluorine of air-conditioners guard method
Can also include：
S2, detects that air-conditioning continuously performs the number of times of scarce fluorine protection.Specifically, can detect in the once operation of air-conditioning
Air-conditioning continuously performs the number of times of scarce fluorine protection.Wherein, lacking the number of times of fluorine protection can be obtained by rolling counters forward.
S4, judges that air-conditioning continuously performs whether the number of times of scarce fluorine protection meets preset times.For example, preset times can be
2～4 times, as a example by 2 times, it can be determined that whether air-conditioning continuously performs the number of times of scarce fluorine protection less than 2 times.If it is determined that air-conditioning connects
The continuous number of times for performing scarce fluorine protection is less than 2 times, then control air-conditioning and exit scarce fluorine protection.For example, when scarce fluorine is protected, can control
Compressor shutdown, and when judging that air-conditioning continuously performs the number of times of scarce fluorine protection less than 2 times, can control in preset time period
Compressor is restarted, and for example, can be restarted with controlling compressor after 3min.
S6, if it is judged that the number of times that air-conditioning continuously performs scarce fluorine protection meets preset times, then control air-conditioning exits scarce
Fluorine is protected.
Preferably, in embodiments of the present invention, continuously perform whether the number of times of scarce fluorine protection meets default judging air-conditioning
After number of times, the lack of fluorine of air-conditioners guard method can also include：
S8, if it is judged that the number of times that air-conditioning continuously performs scarce fluorine protection is not up to preset times, then controls air-conditioning and performs
Scarce fluorine is reported to the police.When control air-conditioning is performed and lacks fluorine warning, do not control compressor and restart, and scarce fluorine warning can be aobvious with display
The mode for showing malfunction is reported to the police.
It should be noted that can be in such as one group computer executable instructions the step of the flow process of accompanying drawing is illustrated
Perform in computer system, and, although show logical order in flow charts, but in some cases, can be with not
The order being same as herein performs shown or described step.
Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general
Computing device realizing, they can be concentrated on single computing device, or are distributed in multiple computing devices and are constituted
Network on, alternatively, they can be realized with the executable program code of computing device, it is thus possible to they are stored
Performed by computing device in the storage device, or they be fabricated to respectively each integrated circuit modules, or by they
In multiple modules or step be fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific
Hardware and software is combined.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (8)
1. a kind of lack of fluorine of air-conditioners guard method, it is characterised in that include：
Detect the first temperature of the ambient temperature of indoor environment residing for air-conditioning and the first evaporator tube temperature of the A/C evaporator
Difference, wherein, the first evaporator tube temperature is evaporator tube temperature of the vaporizer at the first moment；
Judge whether first temperature difference meets first pre-conditioned；
Detect that the first evaporator tube temperature is poor with the second temperature of the second evaporator tube temperature of the A/C evaporator, wherein,
The second evaporator tube temperature is evaporator tube temperature of the A/C evaporator at the second moment；
Judge whether the second temperature difference meets second pre-conditioned；And
If it is judged that first temperature difference meets the described first pre-conditioned and described second temperature difference meets described second
It is pre-conditioned, then control the air-conditioning and perform scarce fluorine protection；
After controlling the air-conditioning and performing scarce fluorine protection, the lack of fluorine of air-conditioners guard method also includes：
Detect that the air-conditioning continuously performs the number of times of scarce fluorine protection；
Judge that the air-conditioning continuously performs whether the number of times of the scarce fluorine protection meets preset times；And
If it is judged that the number of times that the air-conditioning continuously performs the scarce fluorine protection meets the preset times, then the sky is controlled
Tune exits scarce fluorine protection.
2. lack of fluorine of air-conditioners guard method according to claim 1, it is characterised in that in environment indoor residing for detection air-conditioning
Before temperature and the first temperature difference of the first evaporator tube temperature of the A/C evaporator, the lack of fluorine of air-conditioners guard method is also wrapped
Include：
Detect the continuous working period of the compressor in the air-conditioning；And
Whether the continuous working period for judging the compressor reaches Preset Time,
Wherein, if it is judged that the continuous working period of the compressor reaches the Preset Time, then the air-conditioning institute is detected
The ambient temperature of place's indoor environment and the first temperature difference of the first evaporator tube temperature of the A/C evaporator.
3. lack of fluorine of air-conditioners guard method according to claim 1, it is characterised in that
Judge first temperature difference whether meet first it is pre-conditioned including：Judge the multiple institutes in the first preset time period
State whether the first temperature difference meets described first pre-conditioned,
Judge second temperature difference whether meet second it is pre-conditioned including：Judge multiple in the second preset time period
Whether two temperature differences meet described second pre-conditioned,
If it is judged that first temperature difference meets the described first pre-conditioned and described second temperature difference meets described second
Pre-conditioned, then controlling the scarce fluorine protection of the air-conditioning execution includes：If it is judged that many in first preset time period
It is pre-conditioned and multiple described second warm in second preset time period that individual first temperature difference meets described first
Degree difference meets described second pre-conditioned, then control the air-conditioning and perform the scarce fluorine protection.
4. lack of fluorine of air-conditioners guard method according to claim 1, it is characterised in that judging that the air-conditioning continuously performs institute
Whether the number of times for stating scarce fluorine protection is met after preset times, and the lack of fluorine of air-conditioners guard method also includes：
If it is judged that the number of times that the air-conditioning continuously performs the scarce fluorine protection is unsatisfactory for the preset times, then control described
Air-conditioning is performed and lacks fluorine warning.
5. a kind of lack of fluorine of air-conditioners protection device, it is characterised in that include：
First detector unit, for detecting that the ambient temperature of indoor environment residing for air-conditioning is evaporated with the first of the A/C evaporator
First temperature difference of device Guan Wen, wherein, the first evaporator tube temperature is vaporizer of the A/C evaporator at the first moment
Guan Wen；
First judging unit, for judging it is pre-conditioned whether first temperature difference meets first；
Second detector unit, for detecting the first evaporator tube temperature with the second evaporator tube temperature of the A/C evaporator
Second temperature is poor, wherein, the second evaporator tube temperature is evaporator tube temperature of the A/C evaporator at the second moment；
Second judging unit, for judging it is pre-conditioned whether the second temperature difference meets second；And
Control unit, for judging that first temperature difference meets that described first is pre-conditioned and second temperature difference is full
Foot it is described second it is pre-conditioned when, control the air-conditioning and perform to lack fluorine protection；
4th detector unit, for after controlling the air-conditioning and performing scarce fluorine protection, detecting that the air-conditioning continuously performs scarce fluorine
The number of times of protection；
4th judging unit, for judging that the air-conditioning continuously performs whether the number of times of the scarce fluorine protection meets preset times；
And
Described control unit is additionally operable to judging that the air-conditioning continuously performs the number of times of the scarce fluorine protection and meet described default
During number of times, control the air-conditioning and exit scarce fluorine protection.
6. lack of fluorine of air-conditioners protection device according to claim 5, it is characterised in that also include：
3rd detector unit, in the first vaporizer for detecting ambient temperature indoor residing for air-conditioning and the A/C evaporator
Before first temperature difference of Guan Wen, the continuous working period of the compressor in the air-conditioning is detected；And
3rd judging unit, for judging whether the continuous working period of the compressor reaches Preset Time,
Wherein, first detector unit is additionally operable to when reaching described default in the continuous working period for judging the compressor
Between when, detect air-conditioning residing for indoor environment ambient temperature and the first evaporator tube temperature of the A/C evaporator the first temperature
Difference.
7. lack of fluorine of air-conditioners protection device according to claim 5, it is characterised in that
First judging unit is additionally operable to judge whether multiple described first temperature difference in the first preset time period meets
First is pre-conditioned；
Second judging unit is additionally operable to judge whether the multiple second temperatures difference in the second preset time period meets second
It is pre-conditioned；
Described control unit is additionally operable to judging the satisfaction of multiple described first temperature difference in first preset time period
Described first pre-conditioned and in second preset time period multiple described second temperature difference meets described second and presets
During condition, control the air-conditioning and perform the scarce fluorine protection.
8. lack of fluorine of air-conditioners protection device according to claim 5, it is characterised in that also include：
Alarm unit, for judge the air-conditioning continuously perform the number of times of the scarce fluorine protection whether meet preset times it
Afterwards, when judging that the air-conditioning continuously performs the number of times of the scarce fluorine protection and do not meet the preset times, the sky is controlled
Adjust to perform and lack fluorine warning.
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| CN201410317388.8A CN104061656B (en) | 2014-07-04 | 2014-07-04 | Fluorine-deficiency protection method and device for air conditioner |
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| CN104596028B (en) * | 2014-12-26 | 2017-09-29 | 宁波奥克斯电气股份有限公司 | The method whether frequency-changeable compressor of domestic multi-connection machine dallies is judged when heating |
| CN105485856B (en) * | 2015-12-31 | 2019-04-02 | 广东美的制冷设备有限公司 | Method for detecting abnormality under air-conditioning system and air-conditioning system heating state |
| CN105627514B (en) * | 2016-01-07 | 2018-10-23 | 珠海格力电器股份有限公司 | Air conditioner refrigerant fluorine deficiency judgment method and device |
| CN106196420B (en) * | 2016-06-24 | 2019-07-30 | 珠海格力电器股份有限公司 | Refrigerant detection method and device for air conditioning system and air conditioning system |
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| CN106288196B (en) * | 2016-08-17 | 2018-11-23 | 珠海格力电器股份有限公司 | Control device and control method for refrigerant shortage protection of air conditioner and air conditioning system |
| CN106403169B (en) * | 2016-09-06 | 2020-11-20 | 珠海格力电器股份有限公司 | Fluorine-deficient protection method and device and air conditioner |
| CN106556103B (en) * | 2016-10-21 | 2018-12-18 | 珠海格力电器股份有限公司 | Control method and device for fluorine deficiency protection of air conditioner |
| CN108278715A (en) * | 2017-01-04 | 2018-07-13 | 奥克斯空调股份有限公司 | A kind of air conditioner lacks fluorine guard method and the air conditioner with scarce fluorine defencive function |
| CN108332343A (en) * | 2017-07-21 | 2018-07-27 | 广东美的暖通设备有限公司 | Control method, control device and the air conditioner of air conditioner |
| CN107504732B (en) * | 2017-08-31 | 2020-04-28 | 四川长虹电器股份有限公司 | Method and device for judging quantity of refrigerant in refrigeration system |
| CN107957122B (en) * | 2017-11-22 | 2020-08-18 | 宁波奥克斯电气股份有限公司 | Air conditioning system abnormity judgment method and device |
| CN108131776B (en) * | 2017-12-29 | 2020-11-17 | Tcl空调器(中山)有限公司 | Air conditioner fluorine deficiency protection method and air conditioner |
| CN109631228B (en) * | 2019-01-31 | 2020-07-28 | 四川长虹空调有限公司 | Method and system for judging rapid leakage of refrigerant of refrigeration system |
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| CN111121222B (en) * | 2019-12-31 | 2021-11-09 | Tcl空调器(中山)有限公司 | Fluorine-lack protection method for air conditioner, air conditioner and readable storage medium |
| CN113932371B (en) * | 2021-11-23 | 2023-03-31 | 宁波奥克斯电气股份有限公司 | Air conditioner fluorine deficiency protection method and device and air conditioner |
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