CN106016621A - Leakage detection control method of multi-split air conditioning system - Google Patents
Leakage detection control method of multi-split air conditioning system Download PDFInfo
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- CN106016621A CN106016621A CN201610427982.1A CN201610427982A CN106016621A CN 106016621 A CN106016621 A CN 106016621A CN 201610427982 A CN201610427982 A CN 201610427982A CN 106016621 A CN106016621 A CN 106016621A
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- 238000000034 method Methods 0.000 title claims abstract description 54
- 238000001514 detection method Methods 0.000 title claims abstract description 31
- 238000004378 air conditioning Methods 0.000 title claims abstract description 29
- 238000005057 refrigeration Methods 0.000 claims abstract description 59
- 238000003672 processing method Methods 0.000 claims abstract description 4
- 230000007246 mechanism Effects 0.000 claims description 35
- 230000000694 effects Effects 0.000 claims description 13
- 239000012535 impurity Substances 0.000 claims description 9
- 230000008439 repair process Effects 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 claims description 4
- 241001269238 Data Species 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 16
- 238000012545 processing Methods 0.000 abstract description 8
- 239000003507 refrigerant Substances 0.000 abstract description 4
- 230000003449 preventive effect Effects 0.000 abstract 1
- 239000002826 coolant Substances 0.000 description 12
- 230000008859 change Effects 0.000 description 6
- 238000011156 evaluation Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000003203 everyday effect Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- 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
- 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
-
- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a leakage detection control method of a multi-split air conditioning system, which comprises the following steps: 1) a detection step: detecting whether a single internal machine in the system is in a refrigeration leakage state; 2) a judging step: judging the level of the leakage degree of the internal machine in a refrigeration leakage state in the system; 3) the execution steps are as follows: and determining to execute different control processing methods according to different leakage degree levels. The invention can effectively detect and judge the leakage condition of the refrigerant of the shutdown internal machine of the multi-split air-conditioning system, evaluate the leakage degree of the internal machine of the system, guide the machine set which has a fault to process in time, and also can perform preventive processing on the leaked system, thereby preventing and preventing the refrigerant leakage caused by the failure of the electronic expansion valve of the shutdown internal machine.
Description
Technical field
The invention belongs to refrigeration and air-conditioning technical field, be specifically related to the Leak Detection of a kind of multi-online air-conditioning system
Control method.
Background technology
Often there is following technical problem in multi-online air-conditioning system of the prior art:
One, interior organic electronic expansion valve leakage contribution
Multiple on-line system is combined by machine in the outer machine of multiple stage and multiple stage, during operation, often has only to operation portion
Machine in point, now in remaining, machine is in off-mode.
During unit refrigerating operaton, in start, machine is by electronic expansion valve controls cold medium flux, thus in conditioning chamber
Side refrigeration, in shutdown, organic electronic expansion valve then cuts out, and coolant by machine in shutdown, does not makes coolant whole
Flow through machine in start.But during multi-connected machine real work, in often occurring that electronic expansion defective valve causes shutdown
The situation of organic electronic expansion valve leakage.
Organic electronic expansion valve leakage contribution in shutdown:
The coolant flowing through the interior machine of start is caused to reduce, mechanism cold effect in impact start；
Part coolant flows through machine in shutdown, but now shutdown coolant does not has heat transfer effect, thus causes liquid
Coolant flows directly into outer machine without evaporation, and enters compressor, ultimately results in compressor Wet Compression, impact pressure
In the contracting machine life-span, damage in even causing the compressor short time.
In shutdown during the leakage of organic electronic expansion valve, coolant flows through machine in shutdown, may produce pneumatic noise,
Affecting user's using effect, unit is not keyed up, but has noise, has and send out when thus causing the situation of customer complaint
Raw.
Two, organic electronic expansion valve leakage present situation in solving
For the problem of machine leakage in shutdown, when processing after sale, it is only capable of the method by closing each interior machine one by one,
Confirming one by one, for processing after sale, workload is very big, the longest；
The quantity installing multi-connected machine the most at present is the most, needs a kind of method accurate, efficient to all many
Online carry out unified Analysis；
When processing after sale, it is only capable of the unit already leading to compressor damage carries out the leakage of interior organic electronic expansion valve
Check, be a kind of post-processing method, there is no Prevention Processing for being in the engineering of interior machine leakage；
Interior machine leakiness is different, and the impact on unit is the most different, how to evaluate interior machine leakiness to unit
Impact there is no clear and definite standard, the requirement to treatment people after sale is higher.
Cause owing to air conditioning multi-couple machine system of the prior art exists shutdown interior organic electronic expansion valve inefficacy
The technical problem of coolant leakage, research design the most of the present invention goes out the Leak Detection of a kind of multi-online air-conditioning system
Control method.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is to overcome air conditioning multi-couple machine system of the prior art to deposit
In shutdown, organic electronic expansion valve lost efficacy and caused the defect of coolant leakage, thus provided a kind of multi-gang air-conditioner
The Leak Detection control method of system.
The present invention provides the Leak Detection control method of a kind of multi-online air-conditioning system, and it comprises the following steps:
1) detecting step: in detecting system, whether single interior machine is in refrigeration leak condition；
2) step is judged: in being in judgement system under refrigeration leak condition, the leakiness rank of machine is big
Little；
3) step is performed: determine according to different leakiness ranks and perform different control processing methods.
Preferably, described 1) in detecting step, initial detecting step: when multiple on-line system is in refrigeration
During running status, detect whether single interior machine is in off-mode；The most then illustrate that this interior machine is in interior machine
Freeze effective off-mode；
When the time that in definition is detected, machine is under the effective off-mode of interior mechanism cold effectively shuts down for refrigeration
Between, and if the detected interior machine effective unused time of the refrigeration in day ＞ 2h, then machine in definition is detected
For machine in effective off-mode that freezes.
Preferably, detecting step one: when detecting that interior machine is in the effective off-mode of refrigeration, examine further
Survey the inlet temperature of the indoor heat exchanger of this interior machine, and when the inlet temperature≤room of this indoor heat exchanger being detected
Interior ambient temperature 10 DEG C, then illustrate that this interior machine is now in interior mechanism cold leak condition.
Preferably, detecting step two: the time that in definition is detected, machine is under interior mechanism cold leak condition is
Interior mechanism cold leak time, if machine is in one day in detected: mechanism cold leak time >=60%* in (1)
(interior mechanism cold effective unused time), refrigeration effective unused time ＞ 2h of (2) and this interior machine；Then fixed
In justice is detected, machine is machine in leak condition.
Preferably, described 2) judge in step, if described multi-online air-conditioning system exists in leak condition
Machine, then the engineering under this running status is interior machine leak condition engineering；If there is no machine in leak condition,
Then the engineering under this running status is non-interior machine leak condition engineering.
Preferably, described 2) judge in step, under described system is in described interior machine leak condition engineering
Time, internal machine leak condition engineering carries out calculating and the assessment of leakiness rank.
Preferably, under described interior machine leak condition engineering, the calculating of described leakiness rank and appraisal procedure be such as
Under: when machine quantity=0 in leak condition, for normal condition engineering A level；
In 0%* freezes effective off-mode, in machine quantity ＜ leak condition, machine quantity ＜ 20%* refrigeration is effective
In off-mode during machine quantity, leakage level is interior machine leak condition engineering A level；
In 20%* freezes effective off-mode, in machine quantity≤leak condition, machine quantity ＜ 40%* refrigeration has
In effect off-mode during machine quantity, leakage level is interior machine leak condition engineering B level；
In 40%* freezes effective off-mode, in machine quantity≤leak condition, machine quantity ＜ 60%* refrigeration has
In effect off-mode during machine quantity, leakage level is interior machine leak condition engineering C level；
In 60%* freezes effective off-mode, in machine quantity≤leak condition, machine quantity ＜ 80%* refrigeration has
In effect off-mode during machine quantity, leakage level is interior machine leak condition engineering D level；
When machine quantity in machine quantity >=80%* effective off-mode of refrigeration in leak condition, leakage level is
Interior machine leak condition engineering E level.
Preferably, described step 3) if in time machine leakiness is higher than a threshold value in the engineering that is evaluated,
It is replaced the most in time or keeps in repair corresponding electric expansion valve.
Preferably, if the leakiness of machine is the most from low to high in detected, then change in time or maintenance phase
The interior organic electronic expansion valve answered, and concurrently disinfect the impurity in pipeline.
Preferably, all service datas in described multi-online air-conditioning system are gathered by GPRS.
The Leak Detection control method of a kind of multi-online air-conditioning system that the present invention provides has following useful effect
Really:
By the Leak Detection control method of the multi-online air-conditioning system of the present invention, it is possible to effectively detect and sentence
Break and the leakage situation of machine refrigerant in the shutdown of multi-online air-conditioning system, and machine leakiness in system is entered
Row is evaluated, and instructs and has occurred and that the unit of fault processes in time, also can prevent the system of leakage
Property process, prevent and the interior organic electronic expansion valve that prevents to shut down lost efficacy and caused the situation of coolant leakage to occur.
Accompanying drawing explanation
Fig. 1 is the logical process schematic diagram of the Leak Detection control method of the multi-online air-conditioning system of the present invention.
Detailed description of the invention
As it is shown in figure 1, the present invention provides the Leak Detection control method of a kind of multi-online air-conditioning system, its bag
Include following steps: 1) detecting step: in detecting system, whether single interior machine is in refrigeration leak condition (bag
Include initial detecting step, detecting step one and detecting step two)；
2) step is judged: in being in judgement system under refrigeration leak condition, the leakiness rank of machine is big
Little；
3) step is performed: determine according to different leakiness ranks and perform different control processing methods.
By the Leak Detection control method of the multi-online air-conditioning system of the present invention, it is possible to effectively detect and sentence
Break and the leakage situation of machine refrigerant in the shutdown of multi-online air-conditioning system, and machine leakiness in system is entered
Row judges to evaluate, and instructs and has occurred and that the unit of fault processes in time, also can carry out the system of leakage
Preventative process, in preventing and prevent shutdown, organic electronic expansion valve lost efficacy and caused the situation of coolant leakage to be sent out
Raw.
Preferably, described 1) in detecting step, initial detecting step: when multiple on-line system is in refrigeration
During running status, detect whether single interior machine is in off-mode；The most then illustrate that this interior machine is in interior machine
Freeze effective off-mode；Judgement can be detected simply and effectively by the above-mentioned detection method in detecting step
In going out certain, machine is in the effective off-mode of interior mechanism cold or the effective open state of interior mechanism cold, then can
The detection carrying out next step according to the interior machine being in the effective off-mode of interior mechanism cold detected judges to evaluate
For follow-up detection, operation, judges that step provides foundation and precondition.
When the time that in definition is detected, machine is under the effective off-mode of interior mechanism cold effectively shuts down for refrigeration
Between, and if the detected interior machine effective unused time of the refrigeration in day ＞ 2h, then machine in definition is detected
For machine in effective off-mode that freezes.This is because when (24h) all locating if greater than 2 hours in one day
The single interior machine detected in whole unit refrigeration is then in off-mode, it is possible to this quilt is described forcefully
The interior machine of detection is in the idle state of shutting down in the case of whole multiple on-line system refrigeration, and i.e. this is interior
Machine can be regarded as freezing effectively and the interior machine of off-mode, and this time is also dependent on practical situation and reality certainly
The change of border condition and be adjusted.
Preferably, detecting step one: when detecting that interior machine is in the effective off-mode of refrigeration, examine further
Survey the inlet temperature of the indoor heat exchanger of this interior machine, and when the inlet temperature≤room of this indoor heat exchanger being detected
Interior ambient temperature-10 DEG C, then illustrate that this interior machine is now in interior mechanism cold leak condition.When interior machine is detected
To when being in the effective off-mode of refrigeration, illustrate its this moment be in this cooling system effectively and himself
For the state of shutdown, and when the recuperator inlet temperature≤indoor environment temperature-10 DEG C of interior machine, illustrate interior
Machine has cold-producing medium (or claiming coolant) to flow through, because the cold-producing medium entering indoor heat exchanger (vaporizer) is low
Working medium under temperature low pressure operating mode, therefore it is certain to than indoor environment temperature (because to steam from indoor environment
Send out heat absorption), especially when interior machine heat exchanger inlet temperature low more than 10 degree than indoor environment temperature, then
Further and for certain demonstrating this interior machine has cold-producing medium to flow through, and is in, in conjunction with interior machine, the shape that effectively shuts down
State, then can judge this interior office's machine clearly and be flowed through from this leakage by cold-producing medium, being i.e. in interior machine
Refrigeration leak condition.
Preferably, detecting step two: the time that in definition is detected, machine is under interior mechanism cold leak condition is
Interior mechanism cold leak time, if machine is in one day in detected: mechanism cold leak time >=60%* in (1)
(interior mechanism cold effective unused time), refrigeration effective unused time ＞ 2h of (2) and this interior machine；
Then defining this detected interior machine is machine in leak condition.
In in one day, more than 2h, effective unused time of machine illustrates that it is the machine in effective off-mode that freezes,
And mechanism cold leak time >=60%* (interior mechanism cold effective unused time) in a day, then in explanation
The time of more than 60% under the effective off-mode of machine is all flow through at cold-producing medium and leaks from this, then can be clear and definite
Reason out this interior machine certainly for machine in leak condition.
Preferably, described 2) judge in step, if described multi-online air-conditioning system exists in leak condition
Machine, then the engineering under this running status is interior machine leak condition engineering；If there is no machine in leak condition,
Then the engineering under this running status is non-interior machine leak condition engineering.This is to judge step 2) in judgement many
Whether online air-conditioning system is interior machine leak condition engineering whether preferred and direct judgment mode, by inspection
In whether having leak condition in examining system, machine can make interior machine leak condition engineering the most without meaning
The judgement whether being.
Preferably, described 2) judge in step, under described system is in described interior machine leak condition engineering
Time, internal machine leak condition engineering carries out calculating and the assessment of leakiness rank.Let out by interior machine will be in
System under leakage state engineering performs calculating and the assessment of leakiness rank, it is possible to effectively calculates and assesses
Go out the rank of the cold-producing medium leakiness of this system such that it is able to effectively do follow-up according to the size of this rank
Adjustment perform step, to facilitate the leakiness of the cold-producing medium in reduction system.
Preferably, the calculating of described leakiness rank and appraisal procedure under described interior machine leak condition engineering
Such as (to each multi-online air-conditioning system, it is as follows that the running status of every day carries out judgement):
When machine quantity=0 in leak condition, for normal condition engineering A level；
In 0%* freezes effective off-mode, in machine quantity ＜ leak condition, machine quantity ＜ 20%* refrigeration is effective
In off-mode during machine quantity, leakage level is interior machine leak condition engineering A level；
In 20%* freezes effective off-mode, in machine quantity≤leak condition, machine quantity ＜ 40%* refrigeration has
In effect off-mode during machine quantity, leakage level is interior machine leak condition engineering B level；
In 40%* freezes effective off-mode, in machine quantity≤leak condition, machine quantity ＜ 60%* refrigeration has
In effect off-mode during machine quantity, leakage level is interior machine leak condition engineering C level；
In 60%* freezes effective off-mode, in machine quantity≤leak condition, machine quantity ＜ 80%* refrigeration has
In effect off-mode during machine quantity, leakage level is interior machine leak condition engineering D level；
When machine quantity in machine quantity >=80%* effective off-mode of refrigeration in leak condition, leakage level is
Interior machine leak condition engineering E level.
This is the criterion and the judgment mode that preferably leak journey level of the present invention, and leakage journey level is from A-E successively
From low to high, certainly also these data can be changed accordingly and adjust according to practical situation and user's request
Whole.
Preferably, described step 3) in, interior machine leak condition engineering, according to A, B, C, D, E, is let out
Leakage degree is gradually increased, and the impact on unit operation reliability is the biggest, can be by this kind of method to installation
All multi-connected machine engineerings check, if machine leakiness (should higher than during a threshold value in the engineering being evaluated
Threshold value is the marginal value being set according to practical situation), process and then illustrate that the leakage of this engineering is the most serious, need
To process after sale the most urgent, accomplish advanced processing simultaneously, be replaced the most in time or keep in repair corresponding electronics
Expansion valve；If machine leakiness is less than this threshold value in the engineering being evaluated, when the most first carrying out observing one section
Between, as required in the case of be replaced or keep in repair the process of respective electronic expansion valve again.
This is the interior machine leakage Cheng Jihou that the present invention judges according to detection, carries out difference for different leakage level
Preferred process mode and perform step, i.e. in the case of leakage class is relatively low, as long as general its does not affects
Under the conditions of the refrigeration demand of user and comfort level etc., because leakage is not very big, can the most first need not be to it
Process, but affect refrigeration when the leakiness of cold-producing medium arrives greatly, damage compressor and produce air-flow
During noise, then it is accomplished by performing corresponding electric expansion valve to change or the corresponding process of maintenance, to overcome
Drawbacks described above and not enough situation.
Preferably, if the leakiness of machine is the most from low to high in detected, it can be seen that significantly changed
Journey, then illustrate this engineering, there may be impurity in pipeline, then change in time or the corresponding interior organic electronic of maintenance
Expansion valve, and concurrently disinfect the impurity in pipeline.Interior machine leakiness M passes through: " mechanism cold in M=
Leak time/interior mechanism cold effective unused time " determine, if both ratio is the biggest, in illustrating, machine is let out
Leak the most serious；Such as No. 1 M=60% of the machine moon in certain, No. 15 M=70%, No. 30 M=90%, i.e. illustrate
In this interior machine, machine leakage is increasingly severe.If the leakiness of machine the most from low to high, can be seen in detected
To obvious change procedure, then this engineering is described, pipeline there may be impurity, the most in this case system
Run abnormal, need impurity is purged, therefore remove pipeline when changing or keep in repair electric expansion valve
In impurity, can effectively ensure that pipeline is unobstructed, refrigerating operaton good, safety.
Preferably, all service datas in described multi-online air-conditioning system are gathered by GPRS.This is to adopt
The method for optimizing of collection and means, GPRS (General Packet Radio Service) is general grouped wireless
The abbreviation of service technology, it be gsm mobile telephone user can a kind of mobile data services, belong to
Data transmission technology in two third-generation mobile communications, acquisition testing can go out the present invention efficiently and accurately by it
Detecting all data such as the temperature in control method, time, simple and fast is convenient.
Operation principle and the preferred embodiment of the present invention are described below
" (leakage of interior machine is right for the Leak Detection control method of a kind of multi-online air-conditioning system by setting up for the present invention
The evaluation methodology of refrigeration system impact) ", machine leak condition in refrigeration system is judged and in system
Machine leakiness is evaluated, and the unit having occurred and that fault can be instructed to process after sale, be also provided that
The system of leakage is carried out preventative process.
(1) machine leakage definition in refrigeration system
The effective off-mode of interior mechanism cold: system is in refrigeration operational state, this interior machine, it is now in shutdown
State；
Mechanism cold leak condition in definition: in certain, machine is in effective off-mode, and [indoor heat exchanger entrance
Temperature≤[indoor environment temperature]-10 DEG C, then this interior machine is now defined as interior mechanism cold leak condition；
If machine freezes in one day effective unused time ＞ 2h in certain, then it is defined as freezing in effective off-mode
Machine.
(2) machine definition in leak condition
If machine in certain, in one day
Interior mechanism cold leak condition time >=60%* (interior mechanism cold effective off-mode time),
Interior mechanism cold effective off-mode time ＞ 2h；
Then defining this interior machine is machine in leak condition；
If certain multiple on-line system exists machine in leak condition, then this engineering definition is interior machine leak condition engineering
(3) interior machine leak condition engineering evaluation method
Owing in multi-connected machine, machine quantity is the most, the difference of quantity of machine in leakage, on the impact of unit the most not
With, it is evaluated for this internal machine leak condition engineering.
To each multiple on-line system, it is as follows that the running status of every day carries out judgement:
Normal condition engineering A level: machine quantity=0 in leak condition
In interior machine leak condition engineering A level: the 20%* effective off-mode of refrigeration in machine quantity ＞ leak condition
Machine quantity in the machine quantity ＞ 0%* effective off-mode of refrigeration
In interior machine leak condition engineering B level: the 40%* effective off-mode of refrigeration in machine quantity ＞ leak condition
Machine quantity in machine quantity >=20%* effective off-mode of refrigeration
In interior machine leak condition engineering C level: the 60%* effective off-mode of refrigeration in machine quantity ＞ leak condition
Machine quantity in machine quantity >=40%* effective off-mode of refrigeration
In interior machine leak condition engineering D level: the 80%* effective off-mode of refrigeration in machine quantity ＞ leak condition
Machine quantity in machine quantity >=60%* effective off-mode of refrigeration
Interior machine leak condition engineering E level: in interior mechanism cold leak condition >=80%*, mechanism cold effectively shuts down shape
State
(4) application of " interior machine leak condition engineering evaluation method "
Interior machine leak condition engineering is gradually increased according to A, B, C, D, E, leakiness, transports unit
The impact of row reliability is the biggest, can be checked, by this kind of method, all multi-connected machine engineerings installed,
If machine leakiness is the highest in certain engineering, then illustrate that the leakage of this engineering is the most serious, it is the tightest to need to process after sale
Anxious, accomplished advanced processing simultaneously；
If machine leakiness is the most from low to high in certain, it can be seen that significantly change procedure, then this work is described
Journey, there may be impurity in pipeline, in changing during organic electronic expansion valve, simultaneously need to remove impurity in pipeline.
As it has been described above, use, " (leakage of interior machine is right for the Leak Detection control method of a kind of multi-online air-conditioning system
The evaluation methodology of refrigeration system impact) ", can comprehensively, system, efficiently, point order of importance and emergency at present
The all multiple on-line system installed carry out interior machine leak condition evaluation, can instruct the unit having occurred and that fault
Processing after sale, the system to leakage that is also provided that carries out preventative process.
Those skilled in the art is it is easily understood that on the premise of not conflicting, above-mentioned each advantageous manner can
Freely to combine, superposition.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Any amendment, equivalent and the improvement etc. made within bright spirit and principle, should be included in the present invention
Protection domain within.The above is only the preferred embodiment of the present invention, it is noted that for this skill
For the those of ordinary skill in art field, on the premise of without departing from the technology of the present invention principle, it is also possible to make
Some improvement and modification, these improve and modification also should be regarded as protection scope of the present invention.
Claims (10)
1. the Leak Detection control method of a multi-online air-conditioning system, it is characterised in that: comprise the following steps:
1) detecting step: in detecting system, whether single interior machine is in refrigeration leak condition；
2) step is judged: in being in judgement system under refrigeration leak condition, the leakiness rank of machine is big
Little；
3) step is performed: determine according to different leakiness ranks and perform different control processing methods.
Detection control method the most according to claim 1, it is characterised in that: described 1) detection step
In Zhou, whether initial detecting step: when multiple on-line system is in refrigeration operational state, detect single interior machine
It is in off-mode；The most then illustrate that this interior machine is in the effective off-mode of interior mechanism cold；
When the time that in definition is detected, machine is under the effective off-mode of interior mechanism cold effectively shuts down for refrigeration
Between, and if detected in the machine effective unused time of the refrigeration in day ＞ 2h, then define described detected
Interior machine is machine in effective off-mode that freezes.
Detection control method the most according to claim 2, it is characterised in that: detecting step one: work as inspection
Measure interior machine when being in the effective off-mode of refrigeration, detect further the entrance temperature of the indoor heat exchanger of this interior machine
Degree, and when the inlet temperature≤indoor environment temperature-10 DEG C of this indoor heat exchanger being detected, then illustrate that this is interior
Machine is now in interior mechanism cold leak condition.
Detection control method the most according to claim 3, it is characterised in that: detecting step two: definition
The time that in detected, machine is under interior mechanism cold leak condition is interior mechanism cold leak time, if detected
Interior machine is in one day: mechanism cold leak time >=60%* (interior mechanism cold effective unused time) in (1),
And refrigeration effective unused time ＞ 2h of this interior machine (2)；Then define this detected in machine is leak condition
Machine.
Detection control method the most according to claim 4, it is characterised in that: described 2) judge step
In, if described multi-online air-conditioning system exists machine in leak condition, then the engineering under this running status is interior
Machine leak condition engineering；If there is no machine in leak condition, then the engineering under this running status is non-interior machine
Leak condition engineering.
Detection control method the most according to claim 5, it is characterised in that: described 2) judge step
In, when described system is under described interior machine leak condition engineering, internal machine leak condition engineering is let out
The calculating of leakage degree rank and assessment.
Detection control method the most according to claim 6, it is characterised in that:
Under described interior machine leak condition engineering, calculating and the appraisal procedure of described leakiness rank are as follows:
When machine quantity=0 in leak condition, for normal condition engineering A level；
In 0%* freezes effective off-mode, in machine quantity ＜ leak condition, machine quantity ＜ 20%* refrigeration is effective
In off-mode during machine quantity, leakage level is interior machine leak condition engineering A level；
In 20%* freezes effective off-mode, in machine quantity≤leak condition, machine quantity ＜ 40%* refrigeration has
In effect off-mode during machine quantity, leakage level is interior machine leak condition engineering B level；
In 40%* freezes effective off-mode, in machine quantity≤leak condition, machine quantity ＜ 60%* refrigeration has
In effect off-mode during machine quantity, leakage level is interior machine leak condition engineering C level；
In 60%* freezes effective off-mode, in machine quantity≤leak condition, machine quantity ＜ 80%* refrigeration has
In effect off-mode during machine quantity, leakage level is interior machine leak condition engineering D level；
When machine quantity in machine quantity >=80%* effective off-mode of refrigeration in leak condition, leakage level is
Interior machine leak condition engineering E level.
Detection control method the most according to claim 7, it is characterised in that: described step 3) in,
If machine leakiness is higher than a threshold value in the engineering being evaluated, it is replaced the most in time or keeps in repair corresponding
Electric expansion valve.
9. according to the detection control method one of claim 7-8 Suo Shu, it is characterised in that: if detected
The leakiness of interior machine the most from low to high, is then changed or the corresponding interior organic electronic expansion valve of maintenance in time, and
And concurrently disinfect the impurity in pipeline.
10. according to the detection control method one of claim 1-9 Suo Shu, it is characterised in that: pass through GPRS
Gather all service datas in described multi-online air-conditioning system.
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