CN104729151B - The processing method and system of the compressor return line failure of air-conditioning system - Google Patents
The processing method and system of the compressor return line failure of air-conditioning system Download PDFInfo
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- CN104729151B CN104729151B CN201310719123.6A CN201310719123A CN104729151B CN 104729151 B CN104729151 B CN 104729151B CN 201310719123 A CN201310719123 A CN 201310719123A CN 104729151 B CN104729151 B CN 104729151B
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B31/00—Compressor arrangements
- F25B31/002—Lubrication
- F25B31/004—Lubrication oil recirculating arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/06—Damage
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2105—Oil temperatures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21155—Temperatures of a compressor or the drive means therefor of the oil
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention provides a kind of processing method and system of the compressor return line failure of air-conditioning system.Wherein method is comprised the following steps：It is located in compressor return line and returning-oil temperature sensor is set between capillary and gs-oil separator, for detects returning-oil temperature；The failure of return line is judged according to the difference between the returning-oil temperature for detecting and systematic parameter.The method is easy and accurately judge the failure of the compressor return line of air-conditioning system, solve because return line failure is unknowable and cannot remind user's inspection and maintenance, further result in the problem of compressor failure；Returning-oil temperature sensor is arranged on return line and is located between capillary and gs-oil separator, on the one hand there is a segment distance apart from gs-oil separator, the heat transfer that the lubricating oil for avoiding gs-oil separator bottom higher causes causes returning-oil temperature detected value higher, on the other hand avoid the detected value of returning-oil temperature from being influenceed by capillary-compensated effect, and compatible use different size capillary.
Description
Technical field
The present invention relates to air-conditioning system technical field, the more particularly to place of the compressor return line failure of air-conditioning system
Reason method and system.
Background technology
In the air-conditioner set of prior art, compressor is in the process of running constantly lubricating oil therein as exhaust is arranged
To in cooling cycle system, if compressor can not normally oil return, will soon because oil starvation operate cause failure.Prior art
In, the lubricating oil in gs-oil separator generally is returned into compressor air suction mouthful using return line carries out repairing, on return line
Filter, capillary, magnetic valve etc. are typically designed with, wherein capillary is for the flow velocity of reducing pressure by regulating flow reduction lubricating oil（I.e.
Reduce flow）, magnetic valve be in order to control the break-make of return line, filter be in order to impurity screening avoids capillary blockage,
But, in actual use, it may appear that the phenomenon that return line is blocked or magnetic valve is leaked, causing can not be effectively real
Now to the control of compressor oil return.
The content of the invention
For because return line failure is unknowable and cannot remind user's inspection and maintenance, further resulting in the prior art
The problem of compressor failure, accurately judges to process the compressor return line event of air-conditioning system the invention provides a kind of easy
The processing method and system of the compressor return line failure of the air-conditioning system of barrier.
To reach technical purpose, the embodiment of the present invention is adopted the following technical scheme that：
The present invention provides a kind of processing method of the compressor return line failure of air-conditioning system, comprises the following steps：
It is located in compressor return line and returning-oil temperature sensor is set between capillary and gs-oil separator, for detects
Returning-oil temperature；
The failure of return line is judged according to the difference between the returning-oil temperature for detecting and systematic parameter.
Used as a kind of embodiment, the difference between the returning-oil temperature and systematic parameter that are detected described in the basis judges
The failure of return line, comprises the following steps：
When compressor start runs, judge whether the returning-oil temperature and the difference of systematic parameter fall into the first preset value
Scope；
When the difference of the returning-oil temperature and systematic parameter is less than first preset value, compressor return line is drawn
There is plugging fault；
Otherwise, air-conditioning system is continued to run with.
Used as a kind of embodiment, the difference between the returning-oil temperature and systematic parameter that are detected described in the basis judges
The failure of return line, also comprises the following steps：
When the not actuated operation of compressor, judge the returning-oil temperature is preset with whether the difference of systematic parameter falls into second
The scope of value;
When the difference of the returning-oil temperature and systematic parameter is more than second preset value, compressor return line is drawn
There is oil leakage fault；
Otherwise, air-conditioning system is continued to run with.
As a kind of embodiment, also comprise the following steps：
When judging that compressor return line breaks down, system-down is protected and/or report failure.
As a kind of embodiment, also comprise the following steps：
Judge the compressor whether startup optimization；
If startup optimization, judge whether the returning-oil temperature falls into the model of the first preset value with the difference of systematic parameter
Enclose；
If not actuated operation, judge whether the returning-oil temperature falls into the model of the second preset value with the difference of systematic parameter
Enclose.
Used as a kind of embodiment, the compressor operating mode is refrigeration mode or heating mode；
When compressor works in cooling mode, the systematic parameter is system high pressure；
When compressor works in a heating mode, the systematic parameter is environment temperature.
As a kind of embodiment, pressure sensor is provided with the inlets or outlets pipeline of gs-oil separator, be used for
Detecting system high pressure.
It is further comprising the steps of as a kind of embodiment：
It is provided for detecting the environment temperature sensor of environment temperature in the outdoor unit heat exchanger side of air-conditioning system；
When air-conditioning system is shut down, returning-oil temperature and the environment temperature sensor detection of returning-oil temperature sensor detection are obtained
Air-conditioning system where environment temperature；
Judge whether returning-oil temperature falls into ambient temperature range；
Whether the judged result of ambient temperature range is fallen into according to returning-oil temperature, show whether returning-oil temperature sensor is former
Barrier.
The present invention also provides a kind of processing system of the compressor return line failure of air-conditioning system, including compressor and oil
Gas separating device, one end of return line is connected with the oil return opening of gs-oil separator, and the other end is connected with the air entry of compressor
Connect；
The exhaust outlet of compressor is connected with the import of gs-oil separator；
Also include the returning-oil temperature sensor for being arranged on return line and being located between capillary and gs-oil separator, use
In detection returning-oil temperature；
And master controller；
The master controller includes read module and detection module, wherein：
The read module, is arranged on return line and is located at returning between capillary and gs-oil separator for reading
The returning-oil temperature that oil temperature sensor is detected；
The detection module, oil return is judged for the difference according between the returning-oil temperature that detects and systematic parameter
The failure of pipeline.
Used as a kind of embodiment, the detection module judges that processing unit and second judges processing unit including first,
Wherein：
Described first judges processing unit, for when compressor start runs, judging that the returning-oil temperature is joined with system
Whether several differences falls into the scope of the first preset value；When the returning-oil temperature is pre- less than described first with the difference of systematic parameter
If during value, showing that plugging fault occurs in compressor return line；Otherwise, control air-conditioning system is continued to run with；
Described second judges processing unit, for when the not actuated operation of compressor, judging the returning-oil temperature and system
Whether the difference of parameter falls into the scope of the second preset value；When the difference of the returning-oil temperature and systematic parameter is more than described second
During preset value, show that oil leakage fault occurs in compressor return line；Otherwise, control air-conditioning system is continued to run with.
As a kind of embodiment, also including stoppage protection module；
The stoppage protection module, for when judging that compressor return line breaks down, control air-conditioning system to be shut down
Protection and/or report failure.
As a kind of embodiment, also including judging to start processing module；
It is described judge start processing module, for judge the compressor whether startup optimization；
If startup optimization, processing unit is judged into first；
If not actuated operation, processing unit is judged into second.
Used as a kind of embodiment, the compressor operating mode is refrigeration mode or heating mode, wherein：
When compressor works in cooling mode, the systematic parameter is system high pressure；
When compressor works in a heating mode, the systematic parameter is environment temperature.
Used as a kind of embodiment, the compressor is at least one；
Each compressor one return line of correspondence；
Filter including sequential series, capillary and magnetic valve on each described return line；
Returning-oil temperature sensor is set between the capillary and the filter, for detecting returning-oil temperature；
Pressure sensor is provided with the inlets or outlets pipeline of gs-oil separator, for detecting system high pressure；
The outdoor unit heat exchanger side of the air-conditioning system is provided with environment temperature sensor, for detecting environment temperature.
Used as a kind of embodiment, the master controller also includes returning-oil temperature sensor fault module；
The returning-oil temperature sensor fault module, for when air-conditioning system is shut down, obtaining the inspection of returning-oil temperature sensor
Environment temperature where the air-conditioning system of returning-oil temperature and the environment temperature sensor detection of survey；
Judge whether returning-oil temperature falls into ambient temperature range；
Whether the judged result of ambient temperature range is fallen into according to returning-oil temperature, show whether returning-oil temperature sensor is former
Barrier.
Beneficial effects of the present invention：
The processing method and system of the compressor return line failure of air-conditioning system of the invention, wherein method are easy and accurate
The failure of the compressor return line of true judgement air-conditioning system is simultaneously processed；Using the cooling cycle system of the method, solve
Cause the problem of compressor failure because return line failure is unknowable；To return line, whether failure is analyzed and judges,
And remind the timely inspection and maintenance of user, it is to avoid cause compressor burnout problems because of return line failure；Returning-oil temperature is sensed
Device is arranged on return line and is located between capillary and gs-oil separator, on the one hand has a segment distance apart from gs-oil separator, keeps away
Exempting from the heat transfer that gs-oil separator bottom lubricating oil higher causes causes returning-oil temperature detected value higher, on the other hand avoids back
The detected value of oil temperature by capillary-compensated effect influenceed, and compatible use different size capillary.
Brief description of the drawings
Fig. 1 is that the flow of an embodiment of the processing method of the compressor return line failure of air-conditioning system of the invention is shown
It is intended to；
Fig. 2 is the flow of another embodiment of the processing method of the compressor return line failure of air-conditioning system of the invention
Schematic diagram；
Fig. 3 is that the composition of an embodiment of the processing system of the compressor return line failure of air-conditioning system of the invention shows
It is intended to；
Fig. 4 is that the structure of an embodiment of the processing system of the compressor return line failure of air-conditioning system of the invention is shown
It is intended to；
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with drawings and Examples pair
The processing method and system of the compressor return line failure of air-conditioning system of the present invention are further elaborated.Should manage
Solution, specific embodiment described herein is only used to explain the present invention, is not intended to limit the present invention.
Embodiment one
Shown in Figure 1, the present invention provides a kind of processing method of the compressor return line failure of air-conditioning system, works as sky
When adjusting system is in running status, comprise the following steps：
It is located in compressor return line and returning-oil temperature sensor is set between capillary and gs-oil separator, for detects
Returning-oil temperature；
The failure of return line is judged according to the difference between the returning-oil temperature for detecting and systematic parameter.
The method is easy and accurately judge the failure of the compressor return line of air-conditioning system and process, solve because time
Oil pipe line failure is unknowable and cannot remind user's inspection and maintenance, further results in the problem of compressor failure；In oil return pipe
On road set returning-oil temperature sensor, to return line, whether failure is analyzed and judges, and remind user in time check and
Maintenance, it is to avoid the compressor burnout problems caused by return line failure；Returning-oil temperature sensor is arranged on return line position
Between capillary and gs-oil separator, on the one hand there is a segment distance apart from gs-oil separator 30, it is to avoid gs-oil separator bottom
The heat transfer that lubricating oil higher causes causes returning-oil temperature detected value higher, on the other hand avoids the detected value of returning-oil temperature from receiving
To the influence of capillary-compensated effect, and the compressor return line of the air-conditioning system of compatible use different size capillary is former
The processing system of barrier.
Used as a kind of embodiment, the difference between the returning-oil temperature and systematic parameter that are detected described in the basis is sentenced
The failure of disconnected return line, comprises the following steps：
When compressor start runs, judge whether returning-oil temperature falls into the model of the first preset value with the difference of systematic parameter
Enclose；
When the difference of the returning-oil temperature and systematic parameter is less than first preset value, compressor return line is drawn
Occur blocking（jam）Failure；
Otherwise, air-conditioning system is continued to run with.
Used as a kind of embodiment, the difference between the returning-oil temperature and systematic parameter that are detected described in the basis is sentenced
The failure of disconnected return line, also comprises the following steps：
When the not actuated operation of compressor, judge whether returning-oil temperature and the difference of systematic parameter fall into the second preset value
Scope.
When the difference of the returning-oil temperature and systematic parameter is more than second preset value, compressor return line is drawn
There is oil leak（leakage）Failure
Otherwise, air-conditioning system is continued to run with.
The return line failure of the method includes return line plugging fault and return line oil leakage fault, when judging oil return
When temperature is less than the first preset value with the difference of systematic parameter, show that plugging fault occurs in compressor return line；When judging back
When oil temperature is more than second preset value with the difference of systematic parameter, show that oil leakage fault occurs in compressor return line.Its
The criterion of middle return line plugging fault is the size between returning-oil temperature and the difference and the first preset value of systematic parameter；
The criterion of return line oil leakage fault is the size between returning-oil temperature and the difference and the second preset value of systematic parameter.
As a kind of embodiment, also comprise the following steps：
When judge compressor return line break down when, stoppage protection and/or report failure.
When occurring shutting down and/or during report failure, user is plugging fault or is oil leakage fault according to judging what is drawn, if
It is plugging fault, then the magnetic valve to compressor return line carries out maintenance and inspection, if oil leakage fault, then to compressor oil return
The capillary of pipeline carries out maintenance and inspection, until it is determined that being turned back on after no problem.
Used as a kind of embodiment, the difference between the returning-oil temperature and systematic parameter that are detected described in the basis is sentenced
Also comprise the following steps before the failure of disconnected return line：
Judge compressor whether startup optimization；
If startup optimization, judge whether the returning-oil temperature falls into the model of the first preset value with the difference of systematic parameter
Enclose；
If not actuated operation, judge whether the returning-oil temperature falls into the model of the second preset value with the difference of systematic parameter
Enclose.
Master controller judged the running status of each compressor, when judging that compressor is in startup optimization state
When, then carry out air-conditioning system compressor return line whether plugging fault judgement treatment；When judging that compressor is not in opening
During dynamic running status, then carry out air-conditioning system compressor return line whether the judgement treatment of oil leakage fault.
Used as a kind of embodiment, the compressor operating mode is refrigeration mode or heating mode；
When compressor works in cooling mode, the systematic parameter is system high pressure；
When compressor works in a heating mode, the systematic parameter is environment temperature.
The processing method of the compressor return line failure of air-conditioning system of the invention is divided into refrigeration mode and heating mode
Working method, with reference to Fig. 1, Fig. 2 to the compressor return line failure of the air-conditioning system under refrigeration mode of the invention
Processing method and heating mode under the processing method of compressor return line failure of air-conditioning system be described in detail,
It should be noted that Fig. 1, Fig. 2 are only a kind of embodiments of refrigeration mode of the present invention and heating mode, this hair is not limited
It is bright.
It is shown in Figure 1, it is the compressor oil return pipe of the air-conditioning system that compressor of the invention works in cooling mode
The schematic flow sheet of the processing method of road failure, S100, the compressor of the air-conditioning system that compressor works in cooling mode is returned
The processing method of oil pipe line failure, comprises the following steps：
S110, judge compressor whether startup optimization；
If startup optimization, into step S121；
If not actuated operation, into step S122；
S121, judges whether the difference of the returning-oil temperature T and system high pressure TH falls into the scope of the first preset value THj；
S122, judges whether the difference of the returning-oil temperature T and system high pressure TH falls into the scope of the second preset value THl；
S131, when judging that the difference of the returning-oil temperature T and system high pressure TH is less than the first preset value THj, draws compression
There is plugging fault in machine return line；
Otherwise, air-conditioning system is continued to run with；
S132, when judging that the difference of the returning-oil temperature T and system high pressure TH is more than the second preset value THl, draws
There is oil leakage fault in compressor return line；
Otherwise, air-conditioning system is continued to run with；
S140, when plugging fault occurs in the compressor return line for judging air-conditioning system or judges the compressor of air-conditioning system
When there is oil leakage fault in return line, stoppage protection and/or report failure.
It is shown in Figure 2, it is the compressor oil return pipe of the air-conditioning system that compressor of the invention works in a heating mode
The schematic flow sheet of the processing method of road failure, S200, the compressor of the air-conditioning system that compressor works in a heating mode is returned
The processing method of oil pipe line failure, comprises the following steps：
S210, judge compressor whether startup optimization；
If startup optimization, into step S221；
If not actuated operation, into step S222；
S221, judges whether the difference of the returning-oil temperature T and environment temperature TO falls into the scope of the first preset value TOj；
S222, judges whether the difference of the returning-oil temperature T and environment temperature TO falls into the scope of the second preset value TOl；
S231, when judging that the difference of the returning-oil temperature T and environment temperature TO is less than the first preset value TOj, draws compression
There is plugging fault in machine return line；
Otherwise, air-conditioning system is continued to run with；
S232, when judging that the difference of the returning-oil temperature T and environment temperature TO is more than the second preset value TOl, draws
There is oil leakage fault in compressor return line；
Otherwise, air-conditioning system is continued to run with；
S240, when plugging fault occurs in the compressor return line for judging air-conditioning system or judges the compressor of air-conditioning system
When there is oil leakage fault in return line, stoppage protection and/or report failure.
In existing technology, the temperature sensor being located between capillary and compressor by being arranged on return line is detected
The first temperature compared with ambient temperature range, judge whether return line blocks, because the first temperature by capillary dimension shadow
Sound is larger, especially, under cryogenic refrigeration pattern, is simply contrasted with the first temperature and ambient temperature range, is particularly susceptible out
Existing false judgment.Be arranged on returning-oil temperature sensor between capillary and gs-oil separator by the present invention, i.e., in capillary-compensated
Before.In refrigeration（Heat）With system high pressure under pattern（Environment temperature）Contrast to judge whether capillary blocks, or magnetic valve
Whether damage and cannot close cause leakage, do not influenceed by refrigerant factor, judge it is more accurate.
System in the process of running, constantly by the exhaust of compressor taken away, in Oil-gas Separation by the lubricating oil in compressor
It is filtered out coming in device, accumulates in the bottom of gs-oil separator, is then sucked by the air entry of compressor by return line, this
It is a mode for simple lubrication oil circulation in air-conditioner, is also the mesh that gs-oil separator and return line are set in systems
's.
When plugging fault occurs in return line, return line plugging fault or stoppage protection are reported, remind user
Inspection and maintenance is carried out to air-conditioner, it is to avoid compressor fails because oil starvation is operated；When return line has Lou failure
Wait, report return line oil leakage fault or stoppage protection, remind user to carry out inspection and maintenance to air-conditioner, it is to avoid compressor is because lacking
Oil is operated and failed.In order to more accurately judge the state of return line, technical scheme be divided into refrigeration mode with
Heating mode, can so overcome the compressor return line of air-conditioning system is influenceed by refrigerant factor.Wherein, under refrigeration mode
The first preset value THj, the second preset value THl be all system high pressure TH correlation, scope is [TH, TH+20]；Heating mode
Under the first preset value TOj, the second preset value TOl be all environment temperature TO correlation, scope is [TO+10, TO+40].
As a kind of embodiment, pressure sensor is provided with the inlets or outlets pipeline of gs-oil separator 30
60, for detecting system high pressure.
It is shown in Figure 3, it is the schematic diagram of an embodiment of compressor oil-return pipeline system of the invention, the technical program
The compressor oil-return pipeline system in parallel suitable for being provided with multiple compressors.Compressor oil-return pipeline system in the present embodiment
There is provided two compressors of parallel connection, for further explaining the technical program in detail, do not limit the present invention.It is of the invention
Compressor oil-return pipeline system can include compressor, multiple compressors in parallel of the compressors of three parallel connections, four parallel connections,
Only illustrated with two compressors of parallel connection herein, be not described one by one.
The double-compressor parallel oil-return pipeline system of the present embodiment, carries out refrigerating operaton, including：First compressor
10, with air entry and exhaust outlet；Second compressor 20, with air entry and exhaust outlet；Gs-oil separator 30, with import,
Outlet and oil return opening；First return line 40, with the first filter 41, the first capillary 43, the first magnetic valve 44；Second time
Oil pipe line 50, with the second filter 51, the second capillary 53, the second magnetic valve 54；The exhaust outlet of the first compressor 10 and
It is connected with the import of gs-oil separator 30 after the exhaust outlet parallel connection of two compressors 20；The first end of the first return line 40 and
It is connected with the oil return opening of gs-oil separator after the first end parallel connection of two return lines 50；Second end of the first return line 40 with
The air entry of the first compressor 10 is connected；Second end of the second return line 50 is connected with the air entry of the second compressor 20
Connect.
The first returning-oil temperature biography is provided with first return line 40 between the first capillary 43 and the first filter 41
Sensor 42, for detecting the first returning-oil temperature T1；On second return line 50 the second capillary 53 and the second filter 51 it
Between be provided with the second returning-oil temperature sensor 52, for detect the second returning-oil temperature T2；The import or export pipe of gs-oil separator
Pressure sensor 60 is provided with road, for detecting system high pressure TH.
It is assumed that the startup optimization of the first compressor 10 in the present embodiment, the not actuated operation of the second compressor 20.Master controller
100 judge the startup optimization of the first compressor 10, then judge whether the first return line 40 blocks, and master controller 100 is read
The first returning-oil temperature T1 of the detection of the first returning-oil temperature sensor 42 is taken, the system high pressure TH that it and pressure sensor 60 are detected
Difference compare with the first preset value THj, if the difference of the first returning-oil temperature T1 and system high pressure TH is less than the first pre- preset value
THj, then be judged as that plugging fault, system report failure or stoppage protection occurs in the first return line 40, and then remind user to sky
Adjusting the first return line 40 of device carries out inspection and maintenance, and otherwise system is normally carried out；Master controller 100 judges the second compressor
During 20 not actuated operation, then to the second return line 50, whether oil leak judges, master controller 100 reads the second returning-oil temperature
Second returning-oil temperature T2 of the detection of sensor 52, the difference of the system high pressure TH that it and pressure sensor 60 are detected is pre- with second
If value THl compares, if the difference of the second returning-oil temperature T2 and system high pressure TH is more than the second pre- preset value THl, it is judged as the
There is oil leakage fault, system report failure or stoppage protection in two return lines 50, and then remind second oil return of the user to air-conditioner
Pipeline 50 carries out inspection and maintenance, and otherwise system is normally carried out.
As a kind of embodiment, comprise the following steps：
It is provided for detecting the environment temperature sensor of environment temperature in the outdoor unit heat exchanger side of air-conditioning system；
When air-conditioning system is shut down, returning-oil temperature and the environment temperature sensor detection of returning-oil temperature sensor detection are obtained
Air-conditioning system where environment temperature；
Judge whether returning-oil temperature falls into ambient temperature range；
Whether the judged result of ambient temperature range is fallen into according to returning-oil temperature, show whether returning-oil temperature sensor is former
Barrier.
When system-down, returning-oil temperature sensor continuously detects returning-oil temperature, and master controller 100 obtains oil return temperature
The degree T and environment temperature TO of environment temperature sensor detection, returning-oil temperature T is compared with environment temperature TO, judges oil return
Whether temperature T is fallen into the range of environment temperature TO, if not in the range of environment temperature TO, being judged as returning-oil temperature sensor
Failure, reports returning-oil temperature sensor fault, reminds user to carry out maintenance and inspection to returning-oil temperature sensor, and failure is not reported otherwise.
Embodiment two
Based on same inventive concept, present invention also offers a kind for the treatment of of the compressor return line failure of air-conditioning system
System, due to the processing method of principle and a kind of compressor return line failure of foregoing air-conditioning system of this system solve problem
It is similar, therefore the implementation of the system may refer to the implementation of preceding method, repeats part and repeats no more.
The processing system of the compressor return line failure of a kind of air-conditioning system provided in an embodiment of the present invention, referring to Fig. 4
It is shown, including compressor, with exhaust outlet and air entry；
Gs-oil separator 30, with import, outlet and oil return opening；
Return line, with capillary；
One end of return line is connected with the oil return opening of gs-oil separator, and the other end is connected with the air entry of compressor
Connect；
The exhaust outlet of compressor is connected with the import of gs-oil separator；
Wherein, the whole air-conditioning system of master controller 100 pairs is controlled treatment；
Also include the returning-oil temperature sensor for being arranged on return line and being located between capillary and gs-oil separator, use
In detection returning-oil temperature；
And master controller 100；
The master controller 100 includes read module 110 and detection module 130, wherein：
The read module 110, is arranged on return line and is located between capillary and gs-oil separator for reading
The returning-oil temperature that detects of returning-oil temperature sensor；
The detection module 130, for according to the difference judgement between the returning-oil temperature for detecting and systematic parameter
The failure of return line.
Used as a kind of embodiment, the judge module 130 is judged at the judgement of processing unit 131 and second including first
Reason unit 132, wherein：
Described first judges processing unit 131, for when compressor start runs, judging the returning-oil temperature and system
Whether the difference of parameter falls into the scope of the first preset value；
When the difference of the returning-oil temperature and systematic parameter is less than first preset value, compressor return line is drawn
There is plugging fault；
Otherwise, control air-conditioning system is continued to run with；
Described second judges processing unit 132, for when the not actuated operation of compressor, judging the returning-oil temperature and being
Whether the difference of parameter of uniting falls into the scope of the second preset value；
When the difference of the returning-oil temperature and systematic parameter is more than second preset value, compressor return line is drawn
There is oil leakage fault；
Otherwise, control air-conditioning system is continued to run with.
Used as a kind of embodiment, master controller 100 also includes stoppage protection module 140；
The stoppage protection module 140, for when judging that compressor return line breaks down, control air-conditioning system to be stopped
Machine is protected and/or report failure.
Used as a kind of embodiment, master controller 100 also includes judging to start processing module 120；
The judgement startup optimization module 120, for judge compressor whether startup optimization；
If startup optimization, processing unit is judged into first；
If not actuated operation, processing unit is judged into second.
Used as a kind of embodiment, the compressor operating mode is refrigeration mode or heating mode, wherein：
When compressor works in cooling mode, the systematic parameter is system high pressure TH；
When compressor works in a heating mode, the systematic parameter is environment temperature TO.
Used as a kind of embodiment, compressor is at least one；
Each compressor one return line of correspondence；
Filter including sequential series, capillary and magnetic valve on each described return line；
Returning-oil temperature sensor is set between the capillary and the filter, for detecting returning-oil temperature T；
Pressure sensor 60 is provided with the inlets or outlets pipeline of gs-oil separator, for detecting system high pressure TH；
The outdoor unit heat exchanger side of air-conditioning system is provided with environment temperature sensor, for detecting environment temperature TO.
Shown in Figure 4 as a kind of embodiment, master controller 100 also includes returning-oil temperature sensor fault mould
Block 150；
The returning-oil temperature sensor fault module 150, for obtain returning-oil temperature sensor detection returning-oil temperature and
Environment temperature where the air-conditioning system of environment temperature sensor detection；
Judge whether returning-oil temperature falls into ambient temperature range；
Whether the judged result of ambient temperature range is fallen into according to returning-oil temperature, show whether returning-oil temperature sensor is former
Barrier.
Embodiment described above only expresses several embodiments of the invention, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Shield scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (12)
1. the processing method of the compressor return line failure of a kind of air-conditioning system, it is characterised in that comprise the following steps：
It is located in compressor return line and returning-oil temperature sensor is set between capillary and gs-oil separator, for detects oil return
Temperature；
Judge whether return line occurs blocking or leaking according to the difference between the returning-oil temperature for detecting and systematic parameter
The failure of oil；
Difference between the returning-oil temperature and systematic parameter that are detected described in the basis judges the failure of return line, including such as
Lower step：
When compressor start runs, judge whether the returning-oil temperature falls into the model of the first preset value with the difference of systematic parameter
Enclose；
When the difference of the returning-oil temperature and systematic parameter is less than first preset value, show that compressor return line occurs
Plugging fault；
Otherwise, air-conditioning system is continued to run with；
Difference between the returning-oil temperature and systematic parameter that are detected described in the basis judges the failure of return line, also includes
Following steps：
When the not actuated operation of compressor, judge whether the returning-oil temperature and the difference of systematic parameter fall into the second preset value
Scope;
When the difference of the returning-oil temperature and systematic parameter is more than second preset value, show that compressor return line occurs
Oil leakage fault；
Otherwise, air-conditioning system is continued to run with.
2. the processing method of the compressor return line failure of air-conditioning system according to claim 1, it is characterised in that also
Comprise the following steps：
When judge compressor return line break down when, stoppage protection and/or report failure.
3. the processing method of the compressor return line failure of air-conditioning system according to claim 1, it is characterised in that also
Comprise the following steps：
Judge the compressor whether startup optimization；
If startup optimization, judge whether the returning-oil temperature falls into the scope of the first preset value with the difference of systematic parameter；
If not actuated operation, judge whether the returning-oil temperature falls into the scope of the second preset value with the difference of systematic parameter.
4. the processing method of the compressor return line failure of the air-conditioning system according to any one of claims 1 to 3, it is special
Levy and be, the compressor operating mode is refrigeration mode or heating mode；
When compressor works in cooling mode, the systematic parameter is system high pressure；
When compressor works in a heating mode, the systematic parameter is environment temperature.
5. the processing method of the compressor return line failure of air-conditioning system according to claim 4, it is characterised in that also
Comprise the following steps：
Pressure sensor is provided with the inlets or outlets pipeline of gs-oil separator, for detecting system high pressure.
6. the processing method of the compressor return line failure of air-conditioning system according to claim 5, it is characterised in that also
Comprise the following steps：
It is provided for detecting the environment temperature sensor of environment temperature in the outdoor unit heat exchanger side of air-conditioning system；
When air-conditioning system is shut down, the returning-oil temperature of returning-oil temperature sensor detection and the sky of environment temperature sensor detection are obtained
Environment temperature where adjusting system；
Judge whether returning-oil temperature falls into ambient temperature range；
Whether the judged result of ambient temperature range is fallen into according to returning-oil temperature, draw returning-oil temperature sensor whether failure.
7. the processing system of the compressor return line failure of a kind of air-conditioning system, it is characterised in that including compressor and oil gas
Separator, one end of return line is connected with the oil return opening of gs-oil separator, and the other end is connected with the air entry of compressor；
The exhaust outlet of compressor is connected with the import of gs-oil separator；
Also include the returning-oil temperature sensor for being arranged on return line and being located between capillary and gs-oil separator, for examining
Survey time oil temperature；
And master controller；
The master controller includes read module and detection module, wherein：
The read module, for reading the oil return temperature for being arranged on return line and being located between capillary and gs-oil separator
The returning-oil temperature that degree sensor is detected；
The detection module, return line is judged for the difference according between the returning-oil temperature that detects and systematic parameter
Whether the failure of appearance blocking or oil leak；
The detection module judges that processing unit and second judges processing unit including first, wherein：
Described first judges processing unit, for when compressor start runs, judging the returning-oil temperature with systematic parameter
Whether difference falls into the scope of the first preset value；When the difference of the returning-oil temperature and systematic parameter is less than first preset value
When, show that plugging fault occurs in compressor return line；Otherwise, control air-conditioning system is continued to run with；
Described second judges processing unit, for when the not actuated operation of compressor, judging the returning-oil temperature and systematic parameter
Difference whether fall into the scope of the second preset value；When the difference of the returning-oil temperature and systematic parameter is preset more than described second
During value, show that oil leakage fault occurs in compressor return line；Otherwise, control air-conditioning system is continued to run with.
8. the processing system of the compressor return line failure of air-conditioning system according to claim 7, it is characterised in that also
Including stoppage protection module；
The stoppage protection module, for when judging that compressor return line breaks down, controlling air-conditioning system stoppage protection
And/or report failure.
9. the processing system of the compressor return line failure of air-conditioning system according to claim 7, it is characterised in that also
Including judging to start processing module；
It is described judge start processing module, for judge the compressor whether startup optimization；If startup optimization, into first
Judge processing unit；If not actuated operation, processing unit is judged into second.
10. the processing system of the compressor return line failure of the air-conditioning system according to any one of claim 7 to 9, its
Be characterised by, the compressor operating mode be refrigeration mode or heating mode, wherein：
When compressor works in cooling mode, the systematic parameter is system high pressure；
When compressor works in a heating mode, the systematic parameter is environment temperature.
The processing system of the compressor return line failure of 11. air-conditioning systems according to claim 10, it is characterised in that
The compressor is at least one；
Each compressor one return line of correspondence；
Filter including sequential series, capillary and magnetic valve on each described return line；
Returning-oil temperature sensor is set between the capillary and the filter, for detecting returning-oil temperature；
Pressure sensor is provided with the inlets or outlets pipeline of gs-oil separator, for detecting system high pressure；
The outdoor unit heat exchanger side of the air-conditioning system is provided with environment temperature sensor, for detecting environment temperature.
The processing system of the compressor return line failure of 12. air-conditioning systems according to claim 11, it is characterised in that
The master controller also includes returning-oil temperature sensor fault module；
The returning-oil temperature sensor fault module, for when air-conditioning system is shut down, obtaining the detection of returning-oil temperature sensor
Environment temperature where returning-oil temperature and the air-conditioning system of environment temperature sensor detection；
Judge whether returning-oil temperature falls into ambient temperature range；
Whether the judged result of ambient temperature range is fallen into according to returning-oil temperature, draw returning-oil temperature sensor whether failure.
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| CN104949414B (en) * | 2015-07-10 | 2017-12-19 | 珠海格力电器股份有限公司 | The detection method and device of air conditioner and its compressor oil level |
| CN105202815B (en) * | 2015-10-15 | 2020-08-11 | 珠海格力电器股份有限公司 | Oil supply system and method of air conditioner and air conditioner |
| CN105444366B (en) * | 2015-12-31 | 2019-04-05 | 广东美的制冷设备有限公司 | Air-conditioning system oil stifled detection method and detection device, air conditioner |
| WO2019231203A1 (en) * | 2018-05-28 | 2019-12-05 | 엘지전자 주식회사 | Oil detecting device for compressor and compressor including same |
| CN109578283A (en) * | 2018-11-14 | 2019-04-05 | 信尔胜机械（江苏）有限公司 | A kind of helical-lobe compressor intelligence fuel injection control system |
| WO2020241622A1 (en) * | 2019-05-31 | 2020-12-03 | ダイキン工業株式会社 | Refrigeration device |
| CN112432387B (en) * | 2020-11-19 | 2022-04-26 | 珠海格力电器股份有限公司 | Oil return control method and device of air conditioning system and air conditioning system |
| CN113864993B (en) * | 2021-11-04 | 2022-12-06 | 宁波奥克斯电气股份有限公司 | Control method of auxiliary oil return device of multi-split air conditioning system |
| CN117760148A (en) * | 2023-12-22 | 2024-03-26 | 浙江和利制冷设备有限公司 | Shallow formula cryogenic quick-freezing cabinet |
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