CN106950045A - Method for detecting abnormality of online pipeline of multi-connected unit - Google Patents
Method for detecting abnormality of online pipeline of multi-connected unit Download PDFInfo
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- 230000005856 abnormality Effects 0.000 title abstract 2
- 238000001514 detection method Methods 0.000 claims abstract description 58
- 230000002159 abnormal effect Effects 0.000 claims abstract description 45
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims description 24
- 230000008569 process Effects 0.000 claims description 20
- 238000001816 cooling Methods 0.000 abstract 1
- 238000005057 refrigeration Methods 0.000 abstract 1
- 238000004378 air conditioning Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000010259 detection of temperature stimulus Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The invention discloses a method for detecting the abnormality of an online pipeline in a multi-split system, which comprises the following steps: s10, enabling at least one part of the internal machines to run in a refrigerating mode; s20, detecting the pipe inlet temperature Tin and the pipe outlet temperature Tout of the indoor unit in the refrigeration operation, and detecting the indoor environment temperature Tenv; and S30, judging whether the pipeline of the internal machine is abnormal according to the relationship among the pipe inlet temperature Tin, the pipe outlet temperature Tout and the indoor environment temperature Tenv of the internal machine in each cooling operation. The detection method can automatically detect whether the pipelines of the corresponding internal machines are abnormal or not by detecting and judging the relation between the corresponding temperatures, and has the advantages of easy realization, high detection efficiency and high detection precision.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly multi-online air-conditioning system.In particular it relates to a kind of multi-joint
The abnormal detection method of machine pipeline in machine.
Background technology
, it is necessary to detect whether the pipeline of interior machine normal in the installation and debugging of air-conditioning system because the pipeline of interior machine whether
It is normal most important for the follow-up operation of air-conditioning system.If not can ensure that interior machine pipeline is normal in the installation and debugging stage,
The rise of the rate of complaints after sale and maintenance rate is easily lead to, or even causes the damage of part component.
For general air-conditioning system, because generally only one to two interior machine, interior machine pipeline is relatively easy, because
The detection of this internal machine pipeline is also relatively easily realized.However, for multi-online air-conditioning system, because interior machine quantity is more,
Interior machine pipeline is substantially more complex, to accomplish that the whether normal of all interior machine pipelines is carried out actually detected being not one
Easily thing.At present, it is essentially all manually to confirm whether pipeline has exception in the debugging process of unit, this
Kind of way implements very inconvenient, inefficiency, and be difficult to pipeline whether abnormal accurate detection.
Therefore, it is necessary to provide it is a kind of can in automatic detection multi-connected machine machine pipeline whether abnormal detection method, so as to
The installation and debugging work of multi-online air-conditioning system can easily and quickly be completed.
The content of the invention
Based on above-mentioned present situation, it is a primary object of the present invention to provide the abnormal detection side of machine pipeline in a kind of multi-connected machine
Method, it can be automatically completed the debugging detection to machine pipeline in multi-connected machine, and detection efficiency is high, and testing result is accurately and reliably.
To achieve the above object, the technical solution adopted by the present invention is as follows：
The abnormal detection method of machine pipeline in a kind of multi-connected machine, including step：
S10, make mechanism cold operation at least a portion；
S20, the interior machine of detection refrigerating operaton inlet pipe temperature Tin and outlet pipe temperature Tout, and detect indoor environment temperature
Tenv；
S30, inlet pipe temperature Tin, outlet pipe temperature Tout and indoor environment temperature according to the interior machine of each refrigerating operaton
The relation spent between Tenv judges whether interior machine pipeline is abnormal.
Preferably, in step S30, for the interior machine of each refrigerating operaton, by outlet pipe temperature Tout and inlet pipe temperature Tin
Difference be designated as the first temperature difference △ T1, indoor environment temperature Tenv and inlet pipe temperature Tin difference are designated as the second temperature difference △ T2,
If at least one of first temperature difference △ T1 and the second temperature difference △ T2 of any interior machine are less than or equal to preset value A, judge
The interior machine pipeline is abnormal.
Preferably, the value of the preset value A is 3-10 degree.
Preferably, when the detection method is used for the debugging of multi-connected machine, debugging process was divided into multiple stages, each stage
Step S10 is performed respectively to step S30, wherein, in the different stages, the interior machine of refrigerating operaton is different in step S10.
Preferably, in the first stage of debugging process, in step S10, make all interior mechanism cold operations, then perform step
Rapid S20 and step S30.
Preferably, in the first stage, in step S10, the duration of all interior mechanism cold operations is reached after the first duration t1, is opened
Begin to perform step S20 and step S30, wherein t1 is preset value.
Preferably, in the case of not detecting pipeline exception in step s 30, system is continued to run with, and is circulated and performed step
Rapid S20 and step S30, untill detecting that pipeline exception or the duration continued to run with reach the second duration t2, wherein t2
For preset value.
Preferably, in the case where the first stage of debugging process does not detect pipeline exception, into the of debugging process
In two-stage, this stage, in step S10, machine in mechanism cold operation in a part, remainder is set to be run with air supply pattern, so
Step S20 and step S30 is performed afterwards.
Preferably, in second stage, in step S10, the duration of system operation is reached after the 3rd duration t3, starts to perform step
Rapid S20 and step S30, wherein t3 are preset value.
Preferably, in the case of not detecting pipeline exception in step s 30, system is continued to run with, and is circulated and performed step
Rapid S20 and step S30, untill detecting that pipeline exception or the duration continued to run with reach the 4th duration t4, wherein t4
For preset value.
Preferably, in the case where the second stage of debugging process does not detect pipeline exception, into the of debugging process
In three stages, this stage, in step S10, make the interior mechanism cold operation run in second stage with air supply pattern, make second
The interior machine of refrigerating operaton is run with air supply pattern in stage, then performs step S20 and step S30.
Preferably, in the phase III, in step S10, the duration of system operation is reached after the 5th duration t5, starts to perform step
Rapid S20 and step S30, wherein t5 are preset value.
Preferably, in the case of not detecting pipeline exception in step s 30, system is continued to run with, and is circulated and performed step
Rapid S20 and step S30, untill detecting that pipeline exception or the duration continued to run with reach the 6th duration t6, wherein t6
For preset value.
Preferably, machine is the interior machine of half quantity in the part.
Preferably, after the debugging of first stage to phase III, when not detecting that pipeline is abnormal, then it is judged as pipeline
Normally.
The detection method of the present invention by detecting and judging relevant temperature between relation, you can automatic detection goes out in corresponding
The pipeline of machine realizes easily that detection efficiency and accuracy of detection are high with the presence or absence of abnormal.Especially, by the way that debugging process is divided into
Three phases, and make the interior wheel stream refrigerating operaton of interior machine standard-sized sheet refrigerating operaton, part respectively in three phases, can be further
Improve the degree of accuracy of testing result.
Brief description of the drawings
Hereinafter with reference to the side of being preferable to carry out of the accompanying drawing detection method abnormal to machine pipeline in the multi-connected machine according to the present invention
Formula is described.In figure：
Fig. 1 is a kind of flow chart of embodiment of the abnormal detection method of machine pipeline in a kind of multi-connected machine of the present invention；
Fig. 2 is a kind of flow of preferred embodiment of the abnormal detection method of machine pipeline in a kind of multi-connected machine of the present invention
Figure.
Embodiment
Normally, machine pipeline includes a variety of different situations extremely in multi-connected machine, such as blocking, leakage, pipeline wrong
Deng involved pipeline is primarily referred to as pipeline blockage and other extremely in the present invention causes refrigerant to flow not smooth situation.
For to the weak point of the abnormal detection mode of pipeline, the invention provides in a kind of multi-connected machine in the prior art
The abnormal detection method of machine pipeline, as shown in figure 1, the detection method includes step：
S10, make mechanism cold operation at least a portion；
S20, the interior machine of detection refrigerating operaton inlet pipe temperature Tin and outlet pipe temperature Tout, and detect indoor environment temperature
Tenv；
S30, inlet pipe temperature Tin, outlet pipe temperature Tout and indoor environment temperature according to the interior machine of each refrigerating operaton
The relation spent between Tenv judges whether interior machine pipeline is abnormal.
When unit operation for a period of time after, for the interior machine of refrigerating operaton, in the case of its interior machine pipeline is normal,
Because heat exchange occurs for the interior machine heat exchanger, thus the outlet pipe temperature Tout and inlet pipe temperature Tin of the interior machine necessarily have the temperature difference,
Equally, the temperature difference is also necessarily had between indoor environment temperature Tenv and the inlet pipe temperature Tin of the interior machine；On the contrary, in the interior machine pipe
In the case of road abnormal (such as blocking), because refrigerant can not flow to outlet pipe from inlet pipe, or even also flow less than inlet pipe position, just
It can cause there is no the temperature difference between said temperature.
Therefore, the relation between detection method of the invention is by detecting and judging relevant temperature, you can automatic decision goes out
The pipeline of machine is with the presence or absence of exception in corresponding, and it is easy to realize, detection efficiency and accuracy of detection are high.And freezed by reasonable arrangement and transported
Capable interior machine, can realize and any interior machine is detected.
During specific implementation, for example, only need to read the actual measurement of inlet pipe temperature-sensitive bag, outlet pipe temperature-sensitive bag and indoor environment temperature-sensitive bag
Value, just can be readily achieved the whether abnormal detection of internal machine pipeline, will not increase hardware cost.
Preferably, in step S30, for the interior machine of each refrigerating operaton, by outlet pipe temperature Tout and inlet pipe temperature Tin
Difference be designated as the first temperature difference △ T1, indoor environment temperature Tenv and inlet pipe temperature Tin difference are designated as the second temperature difference △ T2,
If at least one of first temperature difference △ T1 and the second temperature difference △ T2 of any interior machine are less than or equal to preset value A, judge
The interior machine pipeline is abnormal.Wherein, the preferred value of the preset value A is 3-10 degree, is more preferably taken in the application of actual set
It is worth for 5 degree.That is, ought be if wherein any one temperature difference be less than 5 degree, then it is considered that machine pipeline exception in corresponding.
It is highly preferred that in specific application, can be arranged in a program " if the first temperature difference △ T1 of any interior machine and
Second temperature difference △ T2 then judge that the interior machine pipeline is abnormal simultaneously less than or equal to preset value A ", it is possible thereby to exclude because of temperature-sensitive bag
It is abnormal to wait the presence of other accidental disturbing factors and cause the erroneous judgement that is likely to occur, although the probability of this erroneous judgement is very low,
Because under normal circumstances, air-conditioning system is higher for the priority of the abnormal detection of temperature-sensitive bag.
Preferably, when above-mentioned detection method proposed by the present invention is used for the debugging of multi-connected machine, namely in unit completion peace
After dress during upper electricity operation first, debugging process is segmented into performing step S10 respectively to step in multiple stages, each stage
S30, wherein, in the different stages, the interior machine of refrigerating operaton is different in step S10, for example can be same in a single stage
When detection all in machines pipeline, and in the other stage then detect a part in machine pipeline.
By carrying out the debugging in multiple stages, different interior machines are selected to be detected in different phases, can be should
The accuracy of detection of detection method provides multi-ensuring, so as to further improve the degree of accuracy of testing result.
Preferably, in the first stage of debugging process, in step S10, make all interior mechanism cold operations, then perform step
Rapid S20 and step S30.
That is, when debugging first, all interior machines is all run in a chiller mode, and for all interior machine testings
Corresponding temperature, and judge foregoing first temperature difference and second temperature difference, to find to exist within the very first time in pipeline exception
Machine.
Preferably, in the first stage, in step S10, the duration of all interior mechanism cold operations is reached after the first duration t1, is opened
Begin to perform step S20 and step S30, wherein t1 is preset value, and its preferred span is, for example, 15min~25min.This hair
In bright, the first duration t1 meaning is set to be to ensure that whole system (i.e. all interior machines) is reached the state of stable operation,
The confidence level of each temperature parameter detected under this state is higher.
Preferably, after the first duration of system operation t1, if not detecting the abnormal situation of pipeline in step s 30
Under, system may continue to operation, keep each interior machine operational mode constant, and circulate execution step S20 and step S30, until inspection
Measure pipeline exception or untill the duration that continues to run with reaches the second duration t2, wherein t2 is preset value, its preferred value
Scope is, for example, 10min~15min.That is, the maximum operation duration of first stage is t1+t2, if never detected
Pipeline is abnormal, then can terminate the debugging of first stage after system operation duration reaches t1+t2.
Although pipeline is not detected by after terminating in the first stage has shown that each interior machine pipeline is normal extremely, however, in order to enter
One step ensures the reliability of testing result, for example, prevent that machine is asked in subsequent running it is possible to there is pipeline in part
Topic, detection method preferred embodiment of the invention can also be ensured in follow-up second stage and/or in the phase III
Property supplement detection.
That is, in the case where the first stage of debugging process does not detect pipeline exception, into the second of debugging process
In stage, this stage, in step S10, machine in mechanism cold operation in a part, remainder is set to be run (preferably with air supply pattern
Air-supply operation at a high speed), then perform step S20 and step S30.Namely in second stage, can be carried out for machine in a part
Detection, therefore make mechanism cold operation in this part, and remaining interior machine only needs to open air supply pattern.
Preferably, in second stage, in step S10, the duration of system operation is reached after the 3rd duration t3, starts to perform step
Rapid S20 and step S30, wherein t3 are preset value, and its preferred span is, for example, 10min~15min.With the first duration t1
Similarly, the 3rd duration t3 meaning, which is lain also in, ensures that mechanism cold operation reaches stable state in corresponding.
Preferably, after the duration t3 of system operation the 3rd, if not detecting that pipeline is abnormal in step s 30, system is still
It can continue to run with, keep each interior machine operational mode constant, and circulate execution step S20 and step S30, until detecting that pipeline is different
Untill duration that is normal or continuing to run with reaches the 4th duration t4, wherein t4 is preset value, and its preferred span is, for example,
5min~10min.That is, the maximum operation duration of second stage is t3+t4, if it is different still never to detect pipeline
Often, then the debugging of second stage can be terminated after system operation duration reaches t3+t4.
Then, system can enter the debugging of phase III, that is, the second stage in debugging process does not detect that pipeline is different
In the case of often, into the phase III of debugging process, in this stage, in step S10, make in second stage with air supply pattern
The interior mechanism cold operation of operation, the interior machine of the refrigerating operaton in second stage is run with air supply pattern, (preferably air-supply is transported at a high speed
OK), step S20 and step S30 is then performed.That is, in second stage and phase III, each interior machine exchanges operational mode,
Make wheel stream refrigerating operaton in two parts, so as to carry out the abnormal detection of pipeline to machine in this two parts in turn.
Preferably, in the phase III, in step S10, the duration of system operation is reached after the 5th duration t5, starts to perform step
Rapid S20 and step S30, wherein t5 are preset value, and its preferred span is, for example, 10min~15min.With the 3rd duration t3
Similarly, the 5th duration t5 meaning, which is lain also in, ensures that mechanism cold operation reaches stable state in corresponding.
Preferably, after the duration t5 of system operation the 5th, if not detecting that pipeline is abnormal in step s 30, system is still
It can continue to run with, keep each interior machine operational mode constant, and circulate execution step S20 and step S30, until detecting that pipeline is different
Untill duration that is normal or continuing to run with reaches the 6th duration t6, wherein t6 is preset value, and its preferred span is, for example,
5min~10min.That is, the maximum operation duration of phase III is t5+t6, if it is different still never to detect pipeline
Often, then the debugging of phase III can be terminated after system operation duration reaches t5+t6.
Normally, when after the debugging of first stage to phase III, not detecting that pipeline is abnormal, then it may determine that
It is normal for pipeline, and the confidence level of judged result is very high.
Preferably, in second stage, it is to make the interior mechanism cold operation of half quantity to allow mechanism cold operation in a part,
The operation and the interior machine of second half quantity is then blown, and in the phase III, this two interior machine intercourses operational mode, still for
The interior mechanism cold operation of half quantity, the interior machine of second half quantity is then blown operation, the mode of machine operational mode in this arrangement
Make the running status of whole system more balanced in the two stages, correspondingly, the 3rd duration t3 and the 5th duration t5 can be with
Identical, the 4th duration t4 and the 6th duration t6 also can be identical.
Illustrate the implementation procedure of the detection method of the preferred embodiment of the present invention in conjunction with Fig. 2 below.
As shown in Fig. 2 on unit after electricity, the debugging stage just can be entered.
First, into the first stage, all interior mechanism cold operations, and after the first duration of system operation t1, judge first
Whether temperature difference △ T1 and the second temperature difference △ T2 are simultaneously less than A；
If so, then judging that machine pipeline is abnormal in corresponding；If it is not, then system is continued to run with, and in the duration continued to run with
Reach before the second duration t2, associated temperature is detected in real time and judges whether the first temperature difference △ T1 and the second temperature difference △ T2 are same repeatedly
When be less than A, once there is interior machine to meet this condition, then judge that machine pipeline is abnormal in corresponding, if met all the time without interior machine
Aforementioned condition, then terminate the debugging of first stage after the second duration t2 is reached.
Then, into second stage, mechanism cold operation in a part, remaining interior machine is run with air supply pattern, and in system
Run after the 3rd duration t3, judge the first temperature difference △ T1 and the second temperature difference △ T2 whether while less than A；
If so, then judging that machine pipeline is abnormal in corresponding；If it is not, then system is continued to run with, and in the duration continued to run with
Reach before the 4th duration t4, associated temperature is detected in real time and judges whether the first temperature difference △ T1 and the second temperature difference △ T2 are same repeatedly
When be less than A, once there is interior machine to meet this condition, then judge that machine pipeline is abnormal in corresponding, if met all the time without interior machine
Aforementioned condition, then terminate the debugging of second stage after the 4th duration t4 is reached.
Again then, into the phase III, mechanism cold operation in the part run in second stage with air supply pattern is made, the
Machine is run with air supply pattern in the part of refrigerating operaton in two-stage, and after the duration t5 of system operation the 5th, judges first
Whether temperature difference △ T1 and the second temperature difference △ T2 are simultaneously less than A；
If so, then judging that machine pipeline is abnormal in corresponding；If it is not, then system is continued to run with, and in the duration continued to run with
Reach before the 6th duration t6, associated temperature is detected in real time and judges whether the first temperature difference △ T1 and the second temperature difference △ T2 are same repeatedly
When be less than A, once there is interior machine to meet this condition, then judge that machine pipeline is abnormal in corresponding, if met all the time without interior machine
Aforementioned condition, then terminate the debugging of phase III after the 6th duration t6 is reached.
If abnormal still to detect any pipeline to the phase III, detection is exited, report pipeline is without exception.
It can be detected automatic, convenient, fast, efficient, with high reliability in multi-connected machine using the detection method of the present invention
Whether machine pipeline is abnormal, so as to can thoroughly eliminate the abnormal situation of interior machine pipeline in the installation and debugging stage, it is ensured that unit is being installed
Machine pipeline meets the requirements in after debugging, effectively the rate of complaints after sale and maintenance rate of reduction air-conditioning system.
Those skilled in the art is it is easily understood that on the premise of not conflicting, above-mentioned each preferred scheme can be free
Ground combination, superposition.
It should be appreciated that above-mentioned embodiment is only illustrative, and not restrictive, without departing from the basic of the present invention
In the case of principle, various obvious or equivalent modification or replace that those skilled in the art can make for above-mentioned details
Change, be all included in scope of the presently claimed invention.
Claims (15)
1. the abnormal detection method of machine pipeline in a kind of multi-connected machine, it is characterised in that including step：
S10, make mechanism cold operation at least a portion；
S20, the interior machine of detection refrigerating operaton inlet pipe temperature Tin and outlet pipe temperature Tout, and detect indoor environment temperature Tenv；
S30, inlet pipe temperature Tin, outlet pipe temperature Tout and indoor environment temperature according to the interior machine of each refrigerating operaton
Relation between Tenv judges whether interior machine pipeline is abnormal.
2. detection method according to claim 1, it is characterised in that in step S30, in each refrigerating operaton
Machine, is designated as the first temperature difference △ T1, by indoor environment temperature Tenv and inlet pipe by outlet pipe temperature Tout and inlet pipe temperature Tin difference
Temperature Tin difference is designated as the second temperature difference △ T2, if in the first temperature difference △ T1 and the second temperature difference △ T2 of any interior machine extremely
Few one is less than or equal to preset value A, then judges that the interior machine pipeline is abnormal.
3. detection method according to claim 2, it is characterised in that the value of the preset value A is 3-10 degree.
4. the detection method according to one of claim 1-3, it is characterised in that the detection method is used for the tune of multi-connected machine
During examination, debugging process was divided into multiple stages, each stage performs step S10 to step S30 respectively, wherein, the different stages
In, the interior machine of refrigerating operaton is different in step S10.
5. detection method according to claim 4, it is characterised in that in the first stage of debugging process, step S10
In, make all interior mechanism cold operations, then perform step S20 and step S30.
6. in detection method according to claim 5, it is characterised in that in the first stage, step S10, all interior mechanism
The duration of cold operation is reached after the first duration t1, starts to perform step S20 and step S30, wherein t1 is preset value.
7. detection method according to claim 6, it is characterised in that do not detect the abnormal feelings of pipeline in step s 30
Under condition, system is continued to run with, and circulates execution step S20 and step S30, until detecting pipeline exception or continuing to run with
Untill duration reaches the second duration t2, wherein t2 is preset value.
8. detection method according to claim 5, it is characterised in that do not detect pipeline in the first stage of debugging process
In the case of exception, into the second stage of debugging process, in this stage, in step S10, make mechanism cold operation in a part,
Machine is run with air supply pattern in remainder, then performs step S20 and step S30.
9. in detection method according to claim 8, it is characterised in that in second stage, step S10, system operation
Duration is reached after the 3rd duration t3, starts to perform step S20 and step S30, wherein t3 is preset value.
10. detection method according to claim 9, it is characterised in that do not detect the abnormal feelings of pipeline in step s 30
Under condition, system is continued to run with, and circulates execution step S20 and step S30, until detecting pipeline exception or continuing to run with
Untill duration reaches the 4th duration t4, wherein t4 is preset value.
11. detection method according to claim 8, it is characterised in that do not detect outlet pipe in the second stage of debugging process
In the case of the exception of road, into the phase III of debugging process, in this stage, in step S10, make in second stage to blow
The interior mechanism cold operation of mode operation, is made the interior machine of refrigerating operaton in second stage be run with air supply pattern, then performs step
Rapid S20 and step S30.
12. in detection method according to claim 11, it is characterised in that in the phase III, step S10, system operation
Duration reach after the 5th duration t5, start perform step S20 and step S30, wherein t5 be preset value.
13. detection method according to claim 12, it is characterised in that do not detect pipeline exception in step s 30
In the case of, system is continued to run with, and circulates execution step S20 and step S30, until detecting pipeline exception or continuing to run with
Duration reach the 6th duration t6 untill, wherein t6 be preset value.
14. the detection method according to one of claim 8-13, it is characterised in that machine is half quantity in the part
Interior machine.
15. the detection method according to one of claim 11-13, it is characterised in that pass through first stage to the phase III
Debugging after, when not detecting that pipeline is abnormal, be then judged as that pipeline is normal.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111425989A (en) * | 2020-04-15 | 2020-07-17 | 宁波奥克斯电气股份有限公司 | Pipeline connection abnormity detection method and device and multi-split air conditioner |
| CN111271818B (en) * | 2019-12-11 | 2021-07-23 | 宁波奥克斯电气股份有限公司 | Method for detecting misconnection of pipelines of multi-connected indoor unit, air conditioner and computer-readable storage medium |
| CN115751607A (en) * | 2022-11-30 | 2023-03-07 | 珠海格力电器股份有限公司 | Detection method and device for air conditioner connecting pipe, air conditioner and storage medium |
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| CN115751607A (en) * | 2022-11-30 | 2023-03-07 | 珠海格力电器股份有限公司 | Detection method and device for air conditioner connecting pipe, air conditioner and storage medium |
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