CN106016621B - A kind of leak detection control method of multi-online air-conditioning system - Google Patents
A kind of leak detection control method of multi-online air-conditioning system Download PDFInfo
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- CN106016621B CN106016621B CN201610427982.1A CN201610427982A CN106016621B CN 106016621 B CN106016621 B CN 106016621B CN 201610427982 A CN201610427982 A CN 201610427982A CN 106016621 B CN106016621 B CN 106016621B
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention provides a kind of leak detection control method of multi-online air-conditioning system comprising following steps：1) detecting step：Whether single interior machine is in refrigeration leak condition in detecting system；2) judgment step：The size of the leakiness rank of interior machine under refrigeration leak condition is in judgement system；3) step is executed：It is determined according to different leakiness ranks and executes different control process methods.The leakage situation of machine refrigerant in the shutdown of multi-online air-conditioning system can be effectively detected and judged through the invention, and machine leakiness in system is evaluated, guidance has occurred and that the unit of failure carries out timely processing, also preventative process can be carried out to the system of leakage, prevent and occurred the case where preventing machine electric expansion valve failure in shutdown and lead to coolant leakage.
Description
Technical field
The invention belongs to refrigeration and air-conditioning technical fields, and in particular to a kind of leak detection controlling party of multi-online air-conditioning system
Method.
Background technology
Often there is following technical problem in multi-online air-conditioning system in the prior art：
One, interior machine electric expansion valve leakage contribution
Multi-line system is composed of machine in more outer machines and Duo Tai, when operation, often only needs to run machine in part,
Remaining interior machine is in off-mode at this time.
When unit refrigerating operaton, the interior machine that is switched on is by electronic expansion valve controls cold medium flux, to refrigeration on the inside of regulation room
Effect, the interior machine electric expansion valve that shuts down then are closed, and refrigerant by machine in shutdown, does not make refrigerant all flow through machine in booting.But
Multi-connected machine in actual work, often occur electronic expansion defective valve cause to shut down interior machine electric expansion valve leakage the case where.
Machine electric expansion valve leakage contribution in shutdown：
Cause the refrigerant for flowing through machine in booting to reduce, influences the interior mechanism cold effect that is switched on；
Part refrigerant flows through machine in shutdown, but shutdown refrigerant does not have heat transfer effect at this time, not so as to cause liquid refrigerants
Outer machine is flowed directly into through evaporation, and enters compressor, compressor Wet Compression is eventually led to, influences the compressor service life, or even cause
Damage in the compressor short time.
In shutdown when the leakage of machine electric expansion valve, refrigerant flows through machine in shutdown, may will produce pneumatic noise, influence user
Using effect, unit are not keyed up, but have noise, and the case where thus causing customer complaint happens occasionally.
Two, machine electric expansion valve leaks present situation in solving
The problem of being leaked for machine in shutdown, when handling after sale, is only capable of the method by closing each interior machine one by one, one by one really
Recognize, for handling after sale, workload is very big, and time-consuming；
The quantity of installation multi-connected machine is very more at present simultaneously, need accurate, the efficient method of one kind to all multi-connected machines into
Row united analysis；
When handling after sale, it is only capable of carrying out interior machine electric expansion valve leak test to the unit for already leading to compressor damage,
It is a kind of post-processing method, the engineering for being in interior machine leakage does not prevent to handle；
Interior machine leakiness is different, and the influence to unit is also different, how to evaluate influence of the interior machine leakiness to unit
There is no specific standard, to the more demanding for the treatment of people after sale.
Refrigerant is caused to be let out since air conditioning multi-couple machine system in the prior art has machine electric expansion valve failure in shutdown
The technical issues of leakage, therefore research and design of the present invention goes out a kind of leak detection control method of multi-online air-conditioning system.
Invention content
Therefore, the technical problem to be solved in the present invention is that air conditioning multi-couple machine system in the prior art is overcome to there is shutdown
Interior machine electric expansion valve fails and causes the defect of coolant leakage, to provide a kind of leak detection control of multi-online air-conditioning system
Method processed.
The present invention provides a kind of leak detection control method of multi-online air-conditioning system comprising following steps：
1) detecting step：Whether single interior machine is in refrigeration leak condition in detecting system；
2) judgment step：The size of the leakiness rank of interior machine under refrigeration leak condition is in judgement system；
3) step is executed：It is determined according to different leakiness ranks and executes different control process methods.
Preferably, in the 1) detecting step, initial detecting step：When multi-line system is in refrigeration operational state
When, whether the machine in single that detects is in off-mode；If so, illustrating that the interior machine is in the effective off-mode of interior mechanism cold；
Definition is detected interior machine and is in the time under the effective off-mode of interior mechanism cold for effective unused time of freezing, and such as
Fruit is detected the interior machine effective unused time > 2h of the refrigeration in one day, then it is the effective off-mode of refrigeration that definition, which is detected interior machine,
Interior machine.
Preferably, detecting step one：When detecting that interior machine is in the effective off-mode of refrigeration, the interior machine is further detected
Indoor heat exchanger inlet temperature, and when detecting 10 DEG C of inlet temperature≤indoor environment temperature-of the indoor heat exchanger,
Then illustrate that the interior machine is now in interior mechanism cold leak condition.
Preferably, detecting step two：Definition is detected interior machine and is in the time under interior mechanism cold leak condition as interior mechanism
Cold leak time, if machine is in one day in being detected：(1) (interior mechanism cold effectively shuts down interior mechanism cold leak time >=60%*
Time), the effective unused time > 2h of refrigeration of (2) and the interior machine；It is machine in leak condition that then definition, which is detected interior machine,.
Preferably, 2) in the judgment step, if there are machine in leak condition, this fortune for the multi-online air-conditioning system
Engineering under row state is interior machine leak condition engineering；If there is no machine in leak condition, then the engineering under this operating status
For non-interior machine leak condition engineering.
Preferably, 2) in the judgment step, when the system is under the interior machine leak condition engineering, to interior machine
Leak condition engineering carries out the calculating and assessment of leakiness rank.
Preferably, the calculating of the leakiness rank and appraisal procedure are as follows under the interior machine leak condition engineering：When
It is A grades of normal condition engineering when machine quantity in leak condition=0；
When machine quantity < 20%* refrigeration effectively shutdown shape in machine quantity < leak conditions in 0%* freezes effective off-mode
In state when machine quantity, leakage level is A grades of interior machine leak condition engineering；
When machine quantity < 40%* refrigeration effectively shutdown in machine quantity≤leak condition in the effective off-mode of 20%* refrigeration
In state when machine quantity, leakage level is B grades of interior machine leak condition engineering；
When machine quantity < 60%* refrigeration effectively shutdown in machine quantity≤leak condition in the effective off-mode of 40%* refrigeration
In state when machine quantity, leakage level is C grades of interior machine leak condition engineering；
When machine quantity < 80%* refrigeration effectively shutdown in machine quantity≤leak condition in the effective off-mode of 60%* refrigeration
In state when machine quantity, leakage level is D grades of interior machine leak condition engineering；
When machine quantity in machine quantity >=effective off-mode of 80%* refrigeration in leak condition, leakage level is that interior machine is let out
E grades of leakage state engineering.
Preferably, in the step 3) if in the engineering being evaluated machine leakiness be higher than a threshold value when, in time into
Corresponding electric expansion valve is replaced or repaired to row.
Preferably, if the leakiness of machine is gradually from low to high in being detected, replace in time or repair it is corresponding in
Machine electric expansion valve, and at the same time removing the impurity in pipeline.
Preferably, all operation datas in the multi-online air-conditioning system are acquired by GPRS.
A kind of leak detection control method of multi-online air-conditioning system provided by the invention has the advantages that：
The leak detection control method of multi-online air-conditioning system through the invention can be effectively detected and judge more
The leakage situation of machine refrigerant in the shutdown of online air-conditioning system, and machine leakiness in system is evaluated, guidance is
The unit to break down carries out timely processing, also can carry out preventative process to the system of leakage, prevent and prevent machine in shutdown
Electronic expansion defective valve and the case where leading to coolant leakage, occur.
Description of the drawings
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.
Specific implementation mode
As shown in Figure 1, the present invention provides a kind of leak detection control method of multi-online air-conditioning system comprising following step
Suddenly：1) detecting step：In detecting system it is single in machine whether in refrigeration leak condition (including initial detecting step, detection step
Rapid one and detecting step two)；
2) judgment step：The size of the leakiness rank of interior machine under refrigeration leak condition is in judgement system；
3) step is executed：It is determined according to different leakiness ranks and executes different control process methods.
The leak detection control method of multi-online air-conditioning system through the invention can be effectively detected and judge more
The leakage situation of machine refrigerant in the shutdown of online air-conditioning system, and judgement evaluation is carried out to machine leakiness in system, it instructs
It has occurred and that the unit of failure carries out timely processing, can also carry out preventative process to the system of leakage, prevent and prevent pass
The case where machine electric expansion valve fails and leads to coolant leakage in machine occurs.
Preferably, in the 1) detecting step, initial detecting step：When multi-line system is in refrigeration operational state
When, whether the machine in single that detects is in off-mode；If so, illustrating that the interior machine is in the effective off-mode of interior mechanism cold；It is logical
The above-mentioned detection method crossed in detecting step, which can be detected simply and effectively, judges that some interior machine is effective in interior mechanism cold
Off-mode or the effective open state of interior mechanism cold, then can be according to detecting in the effective off-mode of interior mechanism cold
The detection that interior machine carries out next step judges evaluation operation, and foundation and precondition are provided for subsequent detection judgment step.
Definition is detected interior machine and is in the time under the effective off-mode of interior mechanism cold for effective unused time of freezing, and such as
Fruit is detected the interior machine effective unused time > 2h of the refrigeration in one day, then it is the effective off-mode of refrigeration that definition, which is detected interior machine,
Interior machine.This is because freezing and detected single interior machine when being in entire unit if it is greater than 2 hours in one day (for 24 hours)
It is then in off-mode, can forcefully illustrate the detected interior machine in the case of entire multi-line system refrigeration
It shuts down idle state, i.e., the interior machine can be regarded as refrigeration effectively and the interior machine of off-mode, and certain time also may be used
It is adjusted according to the change of actual conditions and physical condition.
Preferably, detecting step one：When detecting that interior machine is in the effective off-mode of refrigeration, the interior machine is further detected
Indoor heat exchanger inlet temperature, and when detect inlet temperature≤- 10 DEG C of indoor environment temperature of the indoor heat exchanger, then
Illustrate that the interior machine is now in interior mechanism cold leak condition.When interior machine, which is detected in, freezes effective off-mode, explanation
It works as the recuperator inlet temperature of interior machine in the state that the moment is in this cooling system effectively and its own is shutdown
- 10 DEG C of≤indoor environment temperature illustrates that interior machine has refrigerant (or refrigerant) to flow through, because getting in heat exchanger (evaporator)
Refrigerant be working medium under low-temp low-pressure operating mode, therefore its be certain to than indoor environment temperature (because than from indoor environment
Evaporation endothermic), especially when 10 degree lower than indoor environment temperature of interior machine heat exchanger inlet temperature or more, then further and agree
Surely demonstrating the interior machine has refrigerant to flow through, and is in effective off-mode in conjunction with interior machine, then can clearly judge this
Interior organ's machine and by refrigerant flow through from this leakage, that is, be in interior mechanism cold leak condition.
Preferably, detecting step two：Definition is detected interior machine and is in the time under interior mechanism cold leak condition as interior mechanism
Cold leak time, if machine is in one day in being detected：(1) (interior mechanism cold effectively shuts down interior mechanism cold leak time >=60%*
Time), the effective unused time > 2h of refrigeration of (2) and the interior machine；
It is machine in leak condition then to define this and be detected interior machine.
Effective unused time of interior machine illustrates it for machine in the effective off-mode of refrigeration more than 2h in one day, and one day
In interior mechanism cold leak time >=60%* (interior mechanism cold effective unused time), then illustrate under machine effective off-mode
60% or more time is all flowed through in refrigerant and from this leakage, then it is leak condition that can clearly reason out the interior machine certainly
Interior machine.
Preferably, 2) in the judgment step, if there are machine in leak condition, this fortune for the multi-online air-conditioning system
Engineering under row state is interior machine leak condition engineering；If there is no machine in leak condition, then the engineering under this operating status
For non-interior machine leak condition engineering.This is judgment step 2) in judge whether multi-online air-conditioning system is interior machine leak condition work
Preferred and direct judgment mode whether journey, by whether having machine in leak condition that can directly have no to anticipate in detecting system
Make judgement whether interior machine leak condition engineering is in free burial ground for the destitute.
Preferably, 2) in the judgment step, when the system is under the interior machine leak condition engineering, to interior machine
Leak condition engineering carries out the calculating and assessment of leakiness rank.By the way that the system being under interior machine leak condition engineering is held
The calculating and assessment of row leakiness rank effectively can calculate and evaluate the grade of the refrigerant leakiness of the system
Not, step is executed so as to effectively do subsequent adjustment according to the size of the rank, to facilitate the refrigeration in reduction system
The leakiness of agent.
Preferably, under the interior machine leak condition engineering calculating of the leakiness rank and appraisal procedure as (to every
A multi-online air-conditioning system, daily operating status judge as follows)：
It is A grades of normal condition engineering when machine quantity in leak condition=0；
When machine quantity < 20%* refrigeration effectively shutdown shape in machine quantity < leak conditions in 0%* freezes effective off-mode
In state when machine quantity, leakage level is A grades of interior machine leak condition engineering；
When machine quantity < 40%* refrigeration effectively shutdown in machine quantity≤leak condition in the effective off-mode of 20%* refrigeration
In state when machine quantity, leakage level is B grades of interior machine leak condition engineering；
When machine quantity < 60%* refrigeration effectively shutdown in machine quantity≤leak condition in the effective off-mode of 40%* refrigeration
In state when machine quantity, leakage level is C grades of interior machine leak condition engineering；
When machine quantity < 80%* refrigeration effectively shutdown in machine quantity≤leak condition in the effective off-mode of 60%* refrigeration
In state when machine quantity, leakage level is D grades of interior machine leak condition engineering；
When machine quantity in machine quantity >=effective off-mode of 80%* refrigeration in leak condition, leakage level is that interior machine is let out
E grades of leakage state engineering.
This be the present invention preferred leakage level criterion and judgment mode, leakage level from A-E successively by as low as
Height can also carry out the data changing accordingly and adjusting according to actual conditions and user demand certainly.
Preferably, in the step 3), according to A, B, C, D, E, leakiness gradually increases interior machine leak condition engineering, right
The influence of unit operation reliability is bigger, can be checked all multi-connected machine engineerings of installation by such method, if
When machine leakiness is higher than a threshold value in the engineering being evaluated (threshold value is the critical value set according to actual conditions), place
Reason then illustrates that engineering leakage is more serious, it is more urgent to need to handle after sale, while having accomplished advanced processing, then is replaced in time
Or the corresponding electric expansion valve of repair；If machine leakiness is less than the threshold value in the engineering being evaluated, first observed
For a period of time, as needed in the case of replaced or repaired again the processing of corresponding electric expansion valve.
This be the present invention according to the interior machine leakage level judged of detection after, carried out for different leakage levels different
Preferred process mode and execution step, i.e., it is lower in leakage level, it is needed as long as general its does not influence the refrigeration of user
Under the conditions of comfort level of summing etc., because leakage is not very big, it can not have to first temporarily handle it, but letting out when refrigerant
Leakage degree to when influencing refrigeration effect, damage compressor and generating pneumatic noise, is then just needed to corresponding electric expansion valve greatly
The corresponding processing replaced or repaired is executed, to overcome drawbacks described above and insufficient situation.
Preferably, if the leakiness of machine is gradually from low to high in being detected, it can be seen that apparent change procedure is then said
The bright engineering, there may be impurity in pipeline, then replace in time or repair it is corresponding in machine electric expansion valve, and at the same time removing
Impurity in pipeline.Interior machine leakiness M passes through：" mechanism cold leak time/interior mechanism cold effective unused time in M=" comes true
It is fixed, if the ratio of the two is bigger, illustrate that interior machine leakage is more serious；Such as No. 1 M=60% of the machine moon in certain, No. 15 M=70%,
No. 30 M=90% illustrate that machine leakage is increasingly severe in the interior machine.If be detected in machine leakiness gradually by as low as
It is high, it can be seen that apparent change procedure then illustrates the engineering, and there may be impurity in pipeline, then system operation in this case
It is abnormal, it needs to be purged impurity, therefore remove the impurity in pipeline, Ke Yiyou when replacing or repairing electric expansion valve
Effect ground ensures that pipeline is unobstructed, refrigerating operaton is good, safety.
Preferably, all operation datas in the multi-online air-conditioning system are acquired by GPRS.This is the preferred of acquisition
Ways and means, GPRS (General Packet Radio Service) they are the abbreviations of general packet radio service technology, it
It is a kind of available mobile data services of gsm mobile telephone user, belongs to the data transmission technology in Generation Mobile Telecommunication System, leads to
Crossing it efficiently and accurately acquisition testing can go out all data such as temperature, time in present invention detection control method, simple fast
Victory is convenient.
Operation principle and preferred embodiment of the invention is described below
By foundation, " (interior machine leakage is the present invention to refrigeration for a kind of leak detection control method of multi-online air-conditioning system
The evaluation method that system influences) ", machine leak condition in refrigeration system judge and machine leakiness in system is commented
Valence can instruct to have occurred and that the unit of failure is handled after sale, can also provide and carry out preventative process to the system of leakage.
(1) machine leakage definition in refrigeration system
The interior effective off-mode of mechanism cold：System is in refrigeration operational state, which is now in off-mode；
Mechanism cold leak condition in definition：Certain interior machine is in effective off-mode, Qie [Indoor heat exchanger inlet temperature≤
[Indoor environment Wen ]- 10 DEG C, then the interior machine be defined as interior mechanism cold leak condition at this time；
Effective unused time > 2h if certain interior machine freezes in one day, machine in effective off-mode that is defined as freezing.
(2) machine defines in leak condition
If certain interior machine, in one day
Interior mechanism cold leak condition time >=60%* (interior mechanism cold effective off-mode time),
The interior effective off-mode time > 2h of mechanism cold；
It is machine in leak condition then to define the interior machine；
If certain multi-line system, there are machine in leak condition, which is in interior machine leak condition engineering (3)
Machine leak condition engineering evaluation method
Since machine quantity is very more in multi-connected machine, the difference of the quantity of interior machine is leaked, the influence to unit is also different, thus
Interior machine leak condition engineering is evaluated.
To each multi-line system, daily operating status judge as follows：
A grades of normal condition engineering：Machine quantity=0 in leak condition
A grades of interior machine leak condition engineering：Machine quantity > in machine quantity > leak conditions in the effective off-mode of 20%* refrigeration
Machine quantity in the effective off-mode of 0%* refrigeration
B grades of interior machine leak condition engineering：40%* freeze in effective off-mode machine quantity in machine quantity > leak conditions >=
Machine quantity in the effective off-mode of 20%* refrigeration
C grades of interior machine leak condition engineering：60%* freeze in effective off-mode machine quantity in machine quantity > leak conditions >=
Machine quantity in the effective off-mode of 40%* refrigeration
D grades of interior machine leak condition engineering：80%* freeze in effective off-mode machine quantity in machine quantity > leak conditions >=
Machine quantity in the effective off-mode of 60%* refrigeration
E grades of interior machine leak condition engineering：The effective off-mode of mechanism cold in interior mechanism cold leak condition >=80%*
(4) application of " interior machine leak condition engineering evaluation method "
According to A, B, C, D, E, leakiness gradually increases interior machine leak condition engineering, the influence to unit operation reliability
It is bigger, all multi-connected machine engineerings of installation can be checked by such method, if machine leakiness is got in certain engineering
Height then illustrates that engineering leakage is more serious, it is more urgent to need to handle after sale, while having accomplished advanced processing；
If certain interior machine leakiness is gradually from low to high, it can be seen that apparent change procedure then illustrates the engineering, pipeline
In there may be impurity, replace in machine electric expansion valve when, while needing to remove impurity in pipeline.
As described above, using " (interior machine leakage is to refrigeration system for a kind of leak detection control method of multi-online air-conditioning system
The evaluation method of influence) ", can comprehensively, system, efficiently, point order of importance and emergency to all multi-line systems for installing at present into
The evaluation of machine leak condition, can instruct to have occurred and that the unit of failure is handled after sale in row, can also provide and be to leakage
System carries out preventative process.
Those skilled in the art will readily recognize that under the premise of not conflicting, above-mentioned each advantageous manner can be free
Ground combination, superposition.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.With
Only it is the preferred embodiment of the present invention described in upper, it is noted that for those skilled in the art, not
Under the premise of being detached from the technology of the present invention principle, several improvements and modifications can also be made, these improvements and modifications also should be regarded as this
The protection domain of invention.
Claims (7)
1. a kind of leak detection control method of multi-online air-conditioning system, it is characterised in that：Include the following steps：
1) detecting step：Whether single interior machine is in refrigeration leak condition in detecting system；
2) judgment step：The size of the leakiness rank of interior machine under refrigeration leak condition is in judgement system；
3) step is executed：It is determined according to different leakiness ranks and executes different control process methods；
2) in the judgment step, if the multi-online air-conditioning system there are machine in leak condition, under this operating status
Engineering is interior machine leak condition engineering；If there is no machine in leak condition, then the engineering under this operating status is that non-interior machine is let out
Leakage state engineering；
2) in the judgment step, when the system is under the interior machine leak condition engineering, to interior machine leak condition work
The calculating and assessment of Cheng Jinhang leakiness ranks；
The calculating of the leakiness rank and appraisal procedure are as follows under the interior machine leak condition engineering：
It is A grades of normal condition engineering when machine quantity in leak condition=0；
When machine quantity < 20%* freeze in effective off-mode in machine quantity < leak conditions in the effective off-mode of 0%* refrigeration
When machine quantity, leakage level is A grades of interior machine leak condition engineering；
When machine quantity < 40%* freeze effective off-mode in machine quantity≤leak condition in 20%* freezes effective off-mode
When interior machine quantity, leakage level is B grades of interior machine leak condition engineering；
When machine quantity < 60%* freeze effective off-mode in machine quantity≤leak condition in 40%* freezes effective off-mode
When interior machine quantity, leakage level is C grades of interior machine leak condition engineering；
When machine quantity < 80%* freeze effective off-mode in machine quantity≤leak condition in 60%* freezes effective off-mode
When interior machine quantity, leakage level is D grades of interior machine leak condition engineering；
When machine quantity in machine quantity >=effective off-mode of 80%* refrigeration in leak condition, leakage level is that interior machine leaks shape
E grades of state engineering.
2. detection control method according to claim 1, it is characterised in that：In the 1) detecting step, initial detecting
Step：When multi-line system is in refrigeration operational state, whether the machine in single that detects is in off-mode；If so, explanation
The interior machine is in the effective off-mode of interior mechanism cold；
Definition be detected in machine be in the time under the effective off-mode of interior mechanism cold be refrigeration effective unused time, and if by
The machine effective unused time > 2h of the refrigeration in one day in detection, then it is effective off-mode that freezes to define machine in described be detected
Interior machine.
3. detection control method according to claim 2, it is characterised in that：Detecting step one：When detecting that interior machine is in
Freeze effective off-mode when, further detect the inlet temperature of the indoor heat exchanger of the interior machine, and when detecting that the interior is changed
The inlet temperature of hot device≤- 10 DEG C of indoor environment temperature then illustrates that the interior machine is now in interior mechanism cold leak condition.
4. detection control method according to claim 3, it is characterised in that：Detecting step two：Definition is detected at interior machine
Time under interior mechanism cold leak condition is interior mechanism cold leak time, if machine is in one day in being detected：(1) interior mechanism
Cold leak time >=60%* (interior mechanism cold effective unused time), the effective unused time > 2h of refrigeration of (2) and the interior machine；Then
It is machine in leak condition to define this and be detected interior machine.
5. detection control method according to claim 1, it is characterised in that：In the step 3), if the work being evaluated
When machine leakage level is higher than a threshold value in journey, then corresponding electric expansion valve is replaced or is repaired in time.
6. detection control method according to claim 1, it is characterised in that：If the leakiness of machine is gradual in being detected
From low to high, then machine electric expansion valve in corresponding is replaced or repairs in time, and at the same time removing the impurity in pipeline, interior machine is let out
Leakage degree M passes through：" mechanism cold leak time/interior mechanism cold effective unused time in M=" determines.
7. the detection control method according to one of claim 1-6, it is characterised in that：The multi-connected machine is acquired by GPRS
All operation datas in air-conditioning system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610427982.1A CN106016621B (en) | 2016-06-16 | 2016-06-16 | A kind of leak detection control method of multi-online air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610427982.1A CN106016621B (en) | 2016-06-16 | 2016-06-16 | A kind of leak detection control method of multi-online air-conditioning system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106016621A CN106016621A (en) | 2016-10-12 |
| CN106016621B true CN106016621B (en) | 2018-10-26 |
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| CN106950045B (en) * | 2017-03-02 | 2019-03-26 | 珠海格力电器股份有限公司 | The detection method of machine pipeline exception in a kind of multi-connected machine |
| CN109000306A (en) * | 2018-08-16 | 2018-12-14 | 中山路得斯空调有限公司 | Air conditioning equipment |
| CN109405173A (en) * | 2018-10-26 | 2019-03-01 | 宁波奥克斯电气股份有限公司 | A kind of detection method and multi-online air-conditioning system of the interior leakage of electric expansion valve |
| CN110186148B (en) * | 2019-05-27 | 2021-10-15 | 宁波奥克斯电气股份有限公司 | Control method and system for preventing refrigerant leakage protection in water heating mode and air conditioner |
| CN112097364B (en) * | 2019-06-18 | 2021-11-26 | 青岛海尔空调电子有限公司 | Air conditioner and electronic expansion valve fault detection method thereof |
| CN110486885B (en) * | 2019-08-29 | 2021-11-19 | 广东美的制冷设备有限公司 | Air conditioner control method and system and air conditioner |
| CN110486888B (en) * | 2019-09-09 | 2020-12-04 | 珠海格力电器股份有限公司 | Indoor unit control mainboard abnormity judgment method and device and air conditioning unit |
| CN110542196B (en) * | 2019-09-16 | 2021-05-18 | 广东美的暖通设备有限公司 | Detection assembly for air conditioner, control method, control device and air conditioner |
| CN113639403B (en) * | 2021-08-13 | 2022-10-25 | 宁波奥克斯电气股份有限公司 | Air conditioner compressor abnormity detection method and device and air conditioner |
| CN114279043B (en) * | 2021-12-08 | 2022-11-25 | 珠海格力电器股份有限公司 | Refrigerant shortage processing method and device, multi-split air conditioner and storage medium |
| WO2023169519A1 (en) * | 2022-03-11 | 2023-09-14 | 青岛海信日立空调系统有限公司 | Multi-split air conditioning system and fault-tolerant control method therefor |
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