CN106091251B - Filth blockage judging method and device for heat exchanger and air conditioner - Google Patents
Filth blockage judging method and device for heat exchanger and air conditioner Download PDFInfo
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- CN106091251B CN106091251B CN201610416176.4A CN201610416176A CN106091251B CN 106091251 B CN106091251 B CN 106091251B CN 201610416176 A CN201610416176 A CN 201610416176A CN 106091251 B CN106091251 B CN 106091251B
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- unit
- defrost
- heat exchanger
- defrosting
- 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
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
-
- 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
- F24F2110/50—Air quality properties
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Atmospheric Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
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- Mathematical Physics (AREA)
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- Quality & Reliability (AREA)
- Defrosting Systems (AREA)
- Air Conditioning Control Device (AREA)
Abstract
本发明公开了一种用于换热器的脏堵判断方法、装置和空调，该方法包括：获取所述换热器所在机组所处环境的机组运行基本信息，并获取所述机组的化霜周期；在第一预设时长内，当所述机组运行基本信息满足预设机组运行基本信息、且所述化霜周期缩短时，确定所述换热器脏堵。本发明的方案，可以克服现有技术中换热效果差、维护难度大和用户体验差等缺陷，实现换热效果好、维护难度小和用户体验好的有益效果。
The invention discloses a method, a device and an air conditioner for judging fouling of a heat exchanger. The method includes: acquiring basic unit operation information of the environment where the unit where the heat exchanger is located, and acquiring the defrosting of the unit cycle; within a first preset time period, when the basic unit operation information meets the preset basic unit operation information and the defrosting cycle is shortened, it is determined that the heat exchanger is dirty and blocked. The solution of the present invention can overcome the defects of poor heat exchange effect, high maintenance difficulty and poor user experience in the prior art, and achieve the beneficial effects of good heat exchange effect, low maintenance difficulty and good user experience.
Description
Technical field
The invention belongs to air-conditioning technical fields, and in particular to a kind of dirty stifled judgment method, device and sky for heat exchanger
It adjusts.
Background technique
The process of refrigerastion of refrigeration system is the working substance steam for sucking lower pressure, after being allowed to pressure rise, is condensed into pressure
Higher liquid；After throttling, after becoming the lower liquid of pressure, heat absorption evaporates and becomes the lower steam of pressure, then to pressure
The lower steam of power carries out boosting processing, completes refrigeration cycle.Refrigeration system is mainly swollen by compressor, outdoor heat exchanger, electronics
Swollen valve, indoor heat exchanger composition, wherein outdoor heat exchanger carries outside refrigerant and air carries out the effect of heat exchange.It changes
The heat transfer effect of hot device (especially outdoor heat exchanger) significantly affects the operational effect of refrigeration system.
Refrigeration system is in During Process of Long-term Operation, since outdoor heat exchanger is installed in outdoor environment, for a long time by outdoor
The influence of environment, impurity can be attached on outdoor heat exchanger surface in the air such as dust particles, cause outdoor heat exchanger dirty stifled, influence
The heat transfer effect of outdoor heat exchanger.Meanwhile the influence of thermal effect is exchanged, it can show in the operating parameter of refrigeration system, especially
It is the influence to the refrigeration system defrost period.
In the prior art, the defects of that there are heat transfer effects is poor, maintenance difficulties are big and poor user experience.
Summary of the invention
It is an object of the present invention in view of the foregoing drawbacks, provide it is a kind of for the dirty stifled judgment method of heat exchanger, device and
Air-conditioning influences heat transfer effect to solve the problems, such as dirty block up of outdoor heat exchanger in the prior art, reaches the effect for promoting heat transfer effect
Fruit.
The present invention provides a kind of dirty stifled judgment method for heat exchanger, comprising: unit institute where obtaining the heat exchanger
The unit for locating environment runs essential information, and obtains the defrost period of the unit；In the first preset duration, when the unit
When running the default unit operation essential information of essential information satisfaction and the defrost cycle time, determine that the heat exchanger is dirty stifled.
Optionally, further includes: determine the heat exchanger it is dirty it is stifled after, continue the defrost period for obtaining the unit, and
Obtain the unit it is dirty stifled when heating information in heating mode；In the second preset duration, when describedization for continuing to obtain
The white period constantly shortens and when the heating information meets default heating condition, and the heat exchanger is cleaned in determination.
Optionally, the heating information meets default heating condition, comprising: when the unit heating operation, the unit
Indoor fan supply air temperature lower than default heating supply air temperature；Alternatively, when the unit refrigerating operaton, the room of the unit
The supply air temperature of inner blower is higher than default refrigeration supply air temperature.
Optionally, the unit operation essential information is obtained, comprising: obtain the environment weather information based on weather forecast；
The environment weather information, comprising: at least one of temperature, humidity, wind direction, wind-force, haze index；And/or it obtains by communicating
The unit that module provides runs essential information；The unit runs essential information, comprising: the running environment when unit is run
At least one of wet and dry bulb temperature, the operating load rate of unit, outdoor heat exchanger operating condition.
Optionally, the defrost period of the unit is obtained, comprising: it is normal during adjacent defrost twice to obtain the unit
The time of operation；According to the time, the defrost period is determined.
Optionally, the time that the unit operates normally during adjacent defrost twice is obtained, comprising: obtain by heat exchanger
The collected defrost temperature of the temperature sensing package of heat exchange pipe external surface；When the unit is under the identical unit operation essential information
When heating operation, if the defrost temperature is lower than default defrost temperature, it is determined that unit enters defrost process；According to the unit
Into the time of the defrost process, the time that the unit operates normally during adjacent defrost twice is obtained.
Optionally, the defrost period, comprising: practical defrost period and target defrost period；Correspondingly, it is changed described in determining
Hot device is dirty stifled, comprising: essential information is run according to the unit, determines the practical defrost period of the unit, and with it is preset
The comparison of target defrost period；When the practical defrost period be less than the target defrost period and the target defrost period with
When the difference in the practical defrost period is greater than preset threshold, determine that the heat exchanger is dirty stifled.
Match with the above method, another aspect of the present invention provides a kind of dirty stifled judgment means for heat exchanger, comprising:
Acquiring unit, the unit for unit local environment where obtaining the heat exchanger runs essential information, and obtains the unit
The defrost period；Determination unit, for being transported when unit operation essential information meets default unit in the first preset duration
When row essential information and the defrost cycle time, determine that the heat exchanger is dirty stifled.
Optionally, further includes: cleaning unit, for determine the heat exchanger it is dirty it is stifled after, continue the institute for obtaining the unit
State the defrost period, and obtain the unit it is dirty stifled when heating information in heating mode；And in the second preset duration
It is interior, when the defrost period for continuing to obtain constantly shortens and the heating information meets default heating condition, determine to institute
Heat exchanger is stated to be cleaned.
Optionally, the cleaning unit, comprising: the dirty stifled judgment module of heating, it is described when being used for the unit heating operation
The supply air temperature of the indoor fan of unit is lower than default heating supply air temperature；Alternatively, the dirty stifled judgment module of refrigeration, is used for the machine
When group refrigerating operaton, the supply air temperature of the indoor fan of the unit is higher than default refrigeration supply air temperature.
Optionally, acquiring unit, comprising: weather forecast obtains module, for obtaining the environment weather based on weather forecast
Information；The environment weather information, comprising: at least one of temperature, humidity, wind direction, wind-force, haze index；And/or operation
Data obtaining module runs essential information by the unit that communication module provides for obtaining；The unit runs essential information, packet
Include: the unit run when the wet and dry bulb temperature of running environment, the operating load rate of unit, outdoor heat exchanger operating condition extremely
It is one of few.
Optionally, acquiring unit, further includes: defrost period determination module is changed for obtaining the unit adjacent twice
The time operated normally between frost season；And for determining the defrost period according to the time.
Optionally, defrost period determination module, comprising: temperature acquisition submodule, for obtaining outside by heat exchanger heat-exchanging tube
The collected defrost temperature of the temperature sensing package on surface；Defrost determines submodule, for transporting when the unit in the identical unit
Under row essential information when heating operation, if the defrost temperature is lower than default defrost temperature, it is determined that unit enters defrost process；
Time acquisition submodule, for according to the unit enter the defrost process time, obtain the unit it is adjacent twice
The time operated normally during defrost.
Optionally, the defrost period, comprising: practical defrost period and target defrost period；Correspondingly, determination unit,
Include: computing module, for running essential information according to the unit, determine the practical defrost period of the unit, and with it is pre-
If the target defrost period comparison；It is less than the target defrost period and target defrost week when the practical defrost period
When the difference in phase and the practical defrost period is greater than preset threshold, determine that the heat exchanger is dirty stifled.
Match with above-mentioned apparatus, further aspect of the present invention provides a kind of air-conditioning, comprising: above-described to be used for heat exchanger
Dirty stifled judgment means.
The solution of the present invention detects unit operation essential information and the defrost period of refrigeration system, comprehensive descision unit room
The dirty stifled situation of external heat exchanger, and then it is readily recognized the dirty stifled situation of heat exchanger, to be intervened if necessary, to improve
The heat transfer effect of heat exchanger.
Further, the solution of the present invention, detect refrigeration system unit operation essential information (such as: unit operation is basic
Information) and the defrost period, reflect the dirty stifled situation of unit outdoor heat exchanger, and clean in time to outdoor heat exchanger, thus
The heat transfer effect of heat exchanger is improved, and the difficulty that heat exchanging device is safeguarded is small, also helps the usage experience for promoting user.
Further, the solution of the present invention runs the acquisition of essential information, in conjunction with operation number by unit of the GPRS to unit
According to being analyzed, in the long date, unit climatic environment is severe, at the same identical external parameter (such as: the basic letter of unit operation
Breath) under the conditions of, when unit defrost cycle time, then judge that refrigeration system outdoor heat exchanger is dirty stifled.
The solution of the present invention as a result, runs essential information and defrost period comprehensive descision unit room according to the unit of unit
The dirty stifled situation of external heat exchanger is simultaneously cleaned when dirty stifled in time, is solved dirty block up of outdoor heat exchanger in the prior art and is influenced heat exchange
The problem of effect, thus, overcome in the prior art that heat transfer effect is poor, the big defect with poor user experience of maintenance difficulties, realization is changed
The beneficial effect that thermal effect is good, maintenance difficulties are small and user experience is good.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Detailed description of the invention
Fig. 1 is the flow chart of an embodiment of the dirty stifled judgment method for heat exchanger of the invention；
Fig. 2 is the flow chart of an embodiment of cleaning treatment in method of the invention；
Fig. 3 is the flow chart for the embodiment that the defrost period obtains processing in method of the invention；
Fig. 4 is the flow chart for the embodiment that the defrost period determines processing in method of the invention；
Fig. 5 is the structural schematic diagram of an embodiment of the dirty stifled judgment means for heat exchanger of the invention；
Fig. 6 is the structural schematic diagram for the embodiment that the defrost period determines processing in the device of the invention；
Fig. 7 is the schematic illustration of the stifled embodiment for influencing heat transfer effect of air-conditioning apoplexy involving the solid organs of the invention；
Fig. 8 is the schematic illustration of an embodiment of the stifled judgement processing of air-conditioning apoplexy involving the solid organs of the invention.
In conjunction with attached drawing, appended drawing reference is as follows in the embodiment of the present invention:
102- acquiring unit；1022- weather forecast obtains module；1024- operation information obtains module；1026- defrost week
Phase determining module；10262- temperature acquisition submodule；10264- defrost determines submodule；10266- time acquisition submodule；
104- determination unit；1042- computing module；106- cleaning unit；1062- heats dirty stifled judgment module；Dirty block up of 1064- refrigeration is sentenced
Disconnected module.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the specific embodiment of the invention and
Technical solution of the present invention is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the present invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
According to an embodiment of the invention, a kind of dirty stifled judgment method for heat exchanger is provided, it is of the invention as shown in Figure 1
Method an embodiment flow chart.This may include: for dirty stifled judgment method of heat exchanger
At step S110, the unit operation essential information of unit local environment where obtaining the heat exchanger, and obtain
The defrost period of the unit.
Such as: the unit for obtaining unit local environment runs essential information.
Such as: it is installed on unit communication module (such as: GPRS module), with unit real-time communication.Pass through GPRS module
Can collect unit location head of district's date (such as: in preset duration) unit operation essential information (such as: temperature, humidity,
Wind direction wind-force, haze index etc.), these parameters are then transferred to unit.
Wherein, unit needs defrost in heating operation, does not need defrost in refrigerating operaton.
Essential information and the defrost period are run by obtaining the unit as a result, as judging that heat exchanger is dirty plugging
Foundation, acquisition modes are simple, reliable, obtain the high reliablity of data.
Optionally, in step s 110, the unit operation essential information is obtained, may include: that acquisition is pre- based on weather
The environment weather information of report.
Wherein, the environment weather information, comprising: at least one of temperature, humidity, wind direction, wind-force, haze index.
Such as: each department climate parameter provided from national authority meteorological department, such as haze degree, PM2.5 value, weather
Situation etc..
As a result, by obtaining the weather information based on weather forecast, acquisition modes are simple, and it is good to obtain result accuracy.
Optionally, in step s 110, the unit operation essential information is obtained, can also include: to obtain by communication mould
The unit that block provides runs essential information.
Wherein, the unit runs essential information, comprising: wet and dry bulb temperature, the machine of running environment when the unit is run
Operating load rate, at least one of the outdoor heat exchanger operating condition of group.
Such as: essential information is run by the unit individual unit that unit itself GPRS module is collected into, as unit is run
When running environment wet and dry bulb temperature etc..
Essential information is run by the unit that communication module acquires by obtaining as a result, can easily obtain unit certainly
The unit of body running environment runs essential information, and the convenience of strong operability, acquisition is good.
Optionally, in step s 110, the defrost period for obtaining the unit may include: based on the unit in phase
The time operated normally during adjacent defrost twice, carry out the acquisition in defrost period.
The flow chart that an embodiment of processing is obtained below with reference to the defrost period in method of the invention shown in Fig. 3, into one
Step illustrates the detailed process in the defrost period of the acquisition unit of step S110.
Step S310 obtains the time that the unit operates normally during adjacent defrost twice.
Such as: the defrost period of unit is counted, is normally heated during the adjacent defrost twice of defrost period, that is, unit
The time of operation.
Optionally, in step s310, unit can be obtained by the defrost temperature of heat collecting exchanger heat exchange pipe external surface
The time operated normally during adjacent defrost twice.
The flow chart that an embodiment of processing is determined below with reference to the defrost period in method of the invention shown in Fig. 4, into one
Step illustrates the detailed process that the time that the unit operates normally during adjacent defrost twice is obtained in step S310.
Step S410 obtains the collected defrost temperature of temperature sensing package by heat exchanger heat-exchanging tube outer surface.
Such as: temperature sensing package, that is, defrost temperature temperature sensing package is installed in unit outdoor heat exchanger heat exchange pipe external surface, detects defrost
Temperature.
Step S420, when unit heating operation under the identical unit operation essential information, if describedization
White temperature is lower than default defrost temperature, it is determined that unit enters defrost process.
Such as: when unit heating operation under dry, wet-bulb temperature environment outside given chamber, if defrost temperature is special lower than certain
Definite value, then unit enters defrost.
Step S430 enters the time of the defrost process according to the unit, obtains the unit and change twice adjacent
The time operated normally between frost season.
The defrost temperature for passing through heat collecting exchanger heat exchange pipe external surface as a result, obtains unit during adjacent defrost twice
The time of normal operation, acquisition modes are safe and reliable and accurate data is good.
Step S320 determines the defrost period according to the time.
Such as: obtain the defrost period of unit.
As a result, by the time operated normally during adjacent defrost twice based on the unit, the defrost period is carried out
It obtains, high reliablity, accuracy is good.
At step S120, in the first preset duration, when unit operation essential information meets default unit operation
When essential information and the defrost cycle time, determine that the heat exchanger is dirty stifled.
In one example, the dirty stifled situation of comprehensive descision outdoor heat exchanger.
Such as: when outdoor heat exchanger is dirty stifled, when heating operation, outdoor heat exchanger heat transfer effect can be deteriorated, and be equivalent to
The heat exchanged thermoresistance of refrigerant and air in the external world increases in heat exchanger.At identical conditions (such as: outdoor dry bulb and wet bulb phase
Together), the evaporating temperature of refrigerant can reduce in outdoor heat exchanger, and so as to cause the reduction of defrost temperature, defrost temperature can be down to quickly
Defrost threshold value, unit enter defrost quickly, i.e. the defrost period can shorten.
In one example, heat exchanging device is dirty stifled when being judged, is based primarily upon two conditions.Wherein, mainly judge item
Part are as follows: defrost mechanical periodicity；Auxiliary judgment condition are as follows: the unit operation essential information variation on machine group leader's date.
Such as: the operation essential information variation of the unit on bonding machine group leader's date and the variation in unit defrost period, it can be with
Judge the dirty stifled situation of unit outdoor heat exchanger.
When the unit operation essential information performance on machine group leader's date are as follows: units' installation amblent air temperature haze is very serious, together
When unit defrost cycle time when, it can be said that bright unit outdoor heat exchanger occur it is dirty stifled.
Because of unit defrost cycle time, reason might not be that heat exchanger is dirty stifled entirely, may there is other reasons.But machine
Group defrost cycle time, while unit local climate parameter haze always in this time, then unit defrost cycle time reason
Substantially it can be determined that heat exchanger is dirty stifled.
As a result, by the comprehensive descision based on unit operation essential information and defrost period, determine that whether dirty heat exchanger is stifled,
Deterministic process is safe, succinct, and judging result is reliable.
Optionally, the defrost period may include: practical defrost period and target defrost period.
Optionally, in the step s 120, it determines that the heat exchanger is dirty stifled, may include: basic according to unit operation
Information determines the practical defrost period of the unit, and compares with the preset target defrost period；When the practical defrost period
It is greater than preset threshold less than the difference in the target defrost period and the target defrost period and the practical defrost period
When, determine that the heat exchanger is dirty stifled.
As it can be seen that can be by comparing target defrost cycle T `DefrostWith practical defrost cycle TDefrost, determine that whether dirty unit is stifled.
Such as: essential information is run when the defrost period and the unit, meets function TDefrostWhen=F (tsur, α, β),
The heat exchanger is dirty stifled.Wherein, TDefrostIndicate the defrost period of unit, tsur indicates that outdoor environment wet and dry bulb temperature, α indicate machine
The operating load rate of group, β indicate outdoor heat exchanger operating condition, and tsur, α, β are unit operation essential information.
Wherein, F is only one and enumerates function, only indicates to have a corresponding target for specific tsur, α, β
Defrost cycle T` defrost, when practical defrost cycle TDefrostFar from T` defrostWhen, then show unit exception, such as practical defrost cycle TDefrostIt is remote small
In target defrost cycle T` defrostWhen, then show that heat exchanger is dirty stifled.
In one example, the defrost period of unit changes with outdoor environment wet and dry bulb temperature, operating load, outdoor heat exchanger
It is hot related.
Such as: meet function TDefrost=F (tsur, α, β).Wherein, TDefrostIndicate the defrost period of unit, tsur indicates outdoor
Environment wet and dry bulb temperature, α indicate operating load rate, and β indicates the situation that exchanges heat when outdoor heat exchanger is dirty stifled.
Wherein, what α, β can be arrived by the sensor observing and controlling that current unit carries, belong to ginseng inside unit self-operating
Number；Outdoor heat exchanger information includes the structural parameters and pressure, temperature of the heat exchangers such as outdoor heat exchanger area, fin configuration itself
Etc. parameters, the current institute's belt sensor of unit can detect.
In one example, identical condition (such as: outdoor environment wet and dry bulb temperature, operating load, heat exchanger change
Heat) when, the defrost period is essentially identical.When heat exchanger occurs dirty stifled, heat exchanger heat transfer effect is deteriorated, heat exchanger evaporating temperature meeting
It reduces, heat exchanger is easier to enter defrost, i.e. defrost cycle time.Wherein, identical condition (such as: outdoor environment wet and dry bulb
Temperature, operating load and defrost cycle TDefrost) comparison, can be compared as unit of day, week, the moon, year.
Such as: N week, under the conditions of certain outdoor environment wet and dry bulb temperature, operating load, the defrost period=M min.Work as machine
When group operation is to N+1 week, under the conditions of identical outdoor environment wet and dry bulb temperature, operating load, defrost period of unit=
(M-15) min, i.e. defrost cycle time 15min, show that heat exchanger is likely to occur situation dirty plugging.Wherein, 15min only for
It lifts, the shortening time in practical defrost period, it may be possible to other values；N, M is natural number.
Essential information and the functional relation between the defrost period are run by unit as a result, can further be promoted and be based on
Unit operation essential information and defrost period judge heat exchanger reliability whether dirty plugging and safety, and judging result accuracy
Good, judgment mode is versatile.
It, can be dirty in heat exchanger in conjunction with the dirty stifled situation of heat exchanger that step S120 is determined in an optional embodiment
It further determines whether to need to clean when blocking up serious.
Below with reference to the flow chart of an embodiment of cleaning treatment in method of the invention shown in Fig. 2, further illustrate
Heat exchanger is dirty to further determine whether the detailed process for needing to clean when blocking up serious.
Step S210, determine the heat exchanger it is dirty it is stifled after, continue the defrost period for obtaining the unit, and obtain institute
State unit it is dirty stifled when heating information in heating mode.
Step S220 constantly shortens and the heating in the second preset duration when the defrost period for continuing to obtain
When information meets default heating condition, the heat exchanger is cleaned in determination.
In one example, if in long-time, the unit defrost period constantly shortens, and when influencing unit heating effect,
It then prompts unit outdoor heat exchanger dirty stifled very serious, needs periodically to be cleaned.
Such as: N week, under the conditions of certain outdoor environment wet and dry bulb temperature, operating load, the defrost period=M min, unit
Heating operation, P DEG C of indoor environment temperature.When unit was run to N+1 week, identical outdoor environment wet and dry bulb temperature, fortune
Under row loading condiction, defrost period=(M-15) min of unit, indoor environment temperature is only capable of reaching (P-5) DEG C, then shows outdoor
Heat exchanger is likely to occur situation dirty plugging；Meanwhile the dirty stifled operational effect for having influenced unit of outdoor heat exchanger at this time, so that shadow
Ring the heating effect of indoor.Wherein, indoor environment temperature P and (P-5) DEG C, by way of example only, practical indoor environment temperature
It may be other values.
Judge as a result, heat exchanger it is dirty it is stifled after, whether can further judging dirty plugging serious, and it is dirty block up serious when determine
Cleaning, to promote the heat transfer effect of heat exchanger and the usage experience of user.
Optionally, in step S220, it may include: the unit system that the heating information, which meets default heating condition,
When heat operation, the supply air temperature of the indoor fan of the unit is lower than default heating supply air temperature.
Such as: machine supply air temperature is relatively low in unit heating operation.
Optionally, in step S220, it can also include: the unit that the heating information, which meets default heating condition,
When refrigerating operaton, the supply air temperature of the indoor fan of the unit is higher than default refrigeration supply air temperature.
Such as: machine supply air temperature is higher in unit refrigerating operaton.
As a result, by judging the supply air temperature of indoor fan in heating mode or refrigeration mode, heat exchanger can be determined
Serious conditions dirty plugging, and then determine whether to clean, the judging result of the dirty stifled situation of one side heat exchanging device is accurate, reliable, separately
On the one hand good convenient for maintenance heat exchanger, user experience in time.
The basic letter of unit operation of refrigeration system is detected using the technical solution of the present embodiment through a large amount of verification experimental verification
Breath and defrost period, the dirty stifled situation of comprehensive descision unit outdoor heat exchanger, and then it is readily recognized the dirty stifled situation of heat exchanger,
To be intervened if necessary, to improve the heat transfer effect of heat exchanger.
According to an embodiment of the invention, additionally providing the one kind for corresponding to the dirty stifled judgment method for heat exchanger for changing
The dirty stifled judgment means of hot device.The structural schematic diagram of one embodiment of the device of the invention shown in Figure 4.This is used for heat exchanger
Dirty stifled judgment means may include:
In one embodiment, acquiring unit 102, unit local environment where can be used for obtaining the heat exchanger
Unit runs essential information, and obtains the defrost period of the unit.The concrete function of the acquiring unit 102 and processing are referring to step
Rapid S110.
Such as: the unit for obtaining unit local environment runs essential information.
Such as: it is installed on unit communication module (such as: GPRS module), with unit real-time communication.Pass through GPRS module
Can collect unit location head of district's date (such as: in preset duration) unit operation essential information (such as: temperature, humidity,
Wind direction wind-force, haze index etc.), these parameters are then transferred to unit.
Wherein, unit needs defrost in heating operation, does not need defrost in refrigerating operaton.
Essential information and the defrost period are run by obtaining the unit as a result, as judging that heat exchanger is dirty plugging
Foundation, acquisition modes are simple, reliable, obtain the high reliablity of data.
Optionally, acquiring unit 102 may include: that weather forecast obtains module 1022 and/or operation information acquisition module
1024。
In one example, weather forecast obtains module 1022, can be used for obtaining the environment weather based on weather forecast
Information.
Wherein, the environment weather information, comprising: at least one of temperature, humidity, wind direction, wind-force, haze index.
Such as: each department climate parameter provided from national authority meteorological department, such as haze degree, PM2.5 value, weather
Situation etc..
As a result, by obtaining the weather information based on weather forecast, acquisition modes are simple, and it is good to obtain result accuracy.
In one example, operation information obtains module 1024, can be used for obtaining the unit fortune provided by communication module
Row essential information.
Wherein, the unit runs essential information, comprising: wet and dry bulb temperature, the machine of running environment when the unit is run
Operating load rate, at least one of the outdoor heat exchanger operating condition of group.
Such as: essential information is run by the unit individual unit that unit itself GPRS module is collected into, as unit is run
When running environment wet and dry bulb temperature etc..
Essential information is run by the unit that communication module acquires by obtaining as a result, can easily obtain unit certainly
The unit of body running environment runs essential information, and the convenience of strong operability, acquisition is good.
Optionally, acquiring unit 102 can also include: defrost period determination module 1026.Mould is determined by the defrost period
Block 1026, the time that can be operated normally during adjacent defrost twice based on the unit carry out the acquisition in defrost period.
In one example, defrost period determination module 1026 can be used for obtaining the unit in adjacent defrost twice
The time that period operates normally.The concrete function of the defrost period determination module 1026 and processing are referring to step S310.
Such as: the defrost period of unit is counted, is normally heated during the adjacent defrost twice of defrost period, that is, unit
The time of operation.
Optionally, in defrost period determination module 1026, the defrost of heat collecting exchanger heat exchange pipe external surface can be passed through
Temperature obtains the time that unit operates normally during adjacent defrost twice.
The structural schematic diagram of an embodiment of processing is determined below with reference to the defrost period in the device of the invention shown in Fig. 6,
Further illustrate the specific structure of defrost period determination module 1026.Defrost period determination module 1026 may include: that temperature is adopted
Collection submodule 10262, defrost determine submodule 10264 and time acquisition submodule 10266.
In a specific example, temperature acquisition submodule 10262 can be used for obtaining by heat exchanger heat-exchanging tube outer surface
The collected defrost temperature of temperature sensing package.The concrete function of the temperature acquisition submodule 10262 and processing are referring to step S410.
Such as: temperature sensing package, that is, defrost temperature temperature sensing package is installed in unit outdoor heat exchanger heat exchange pipe external surface, detects defrost
Temperature.
In a specific example, defrost determines submodule 10264, can be used for when the unit is in the identical machine
Under group operation essential information when heating operation, if the defrost temperature is lower than default defrost temperature, it is determined that unit enters defrost
Process.The defrost determines the concrete function of submodule 10264 and handles referring to step S420.
Such as: when unit heating operation under dry, wet-bulb temperature environment outside given chamber, if defrost temperature is special lower than certain
Definite value, then unit enters defrost.
In a specific example, time acquisition submodule 10266 can be used for entering the defrost according to the unit
The time of process obtains the time that the unit operates normally during adjacent defrost twice.The time acquisition submodule 10266
Concrete function and processing referring to step S430.
The defrost temperature for passing through heat collecting exchanger heat exchange pipe external surface as a result, obtains unit during adjacent defrost twice
The time of normal operation, acquisition modes are safe and reliable and accurate data is good.
In one example, defrost period determination module 1026 can be also used for determining the defrost according to the time
Period.The concrete function of the defrost period determination module 1026 and processing are referring to step S320.
Such as: obtain the defrost period of unit.
As a result, by the time operated normally during adjacent defrost twice based on the unit, the defrost period is carried out
It obtains, high reliablity, accuracy is good.
In one embodiment, determination unit 104 can be used in the first preset duration, when the unit is run
When essential information meets default unit operation essential information and the defrost cycle time, determine that the heat exchanger is dirty stifled.This is really
The concrete function of order member 104 and processing are referring to step S120.
In one example, the dirty stifled situation of comprehensive descision outdoor heat exchanger.
Such as: when outdoor heat exchanger is dirty stifled, when heating operation, outdoor heat exchanger heat transfer effect can be deteriorated, and be equivalent to
The heat exchanged thermoresistance of refrigerant and air in the external world increases in heat exchanger.At identical conditions (such as: outdoor dry bulb and wet bulb phase
Together), the evaporating temperature of refrigerant can reduce in outdoor heat exchanger, and so as to cause the reduction of defrost temperature, defrost temperature can be down to quickly
Defrost threshold value, unit enter defrost quickly, i.e. the defrost period can shorten.
In one example, heat exchanging device is dirty stifled when being judged, is based primarily upon two conditions.Wherein, mainly judge item
Part are as follows: defrost mechanical periodicity；Auxiliary judgment condition are as follows: the unit operation essential information variation on machine group leader's date.
Such as: the operation essential information variation of the unit on bonding machine group leader's date and the variation in unit defrost period, it can be with
Judge the dirty stifled situation of unit outdoor heat exchanger.
When the unit operation essential information performance on machine group leader's date are as follows: units' installation amblent air temperature haze is very serious, together
When unit defrost cycle time when, it can be said that bright unit outdoor heat exchanger occur it is dirty stifled.
Because of unit defrost cycle time, reason might not be that heat exchanger is dirty stifled entirely, may there is other reasons.But machine
Group defrost cycle time, while unit local climate parameter haze always in this time, then unit defrost cycle time reason
Substantially it can be determined that heat exchanger is dirty stifled.
As a result, by the comprehensive descision based on unit operation essential information and defrost period, determine that whether dirty heat exchanger is stifled,
Deterministic process is safe, succinct, and judging result is reliable.
Optionally, the defrost period may include: practical defrost period and target defrost period.
Optionally it is determined that unit 104, may include: computing module 1042.
In one example, computing module 1042 can be used for running essential information according to the unit, determine the machine
The practical defrost period of group, and compared with the preset target defrost period；It is less than the targeted when the practical defrost period
When the difference in white period and the target defrost period and the practical defrost period is greater than preset threshold, the heat exchange is determined
Device is dirty stifled.
As it can be seen that can be by comparing target defrost cycle T `DefrostWith practical defrost cycle TDefrost, determine that whether dirty unit is stifled.
Such as: essential information is run when the defrost period and the unit, meets function TDefrostWhen=F (tsur, α, β),
The heat exchanger is dirty stifled.Wherein, TDefrostIndicate the defrost period of unit, tsur indicates that outdoor environment wet and dry bulb temperature, α indicate machine
The operating load rate of group, β indicate outdoor heat exchanger operating condition, and tsur, α, β are unit operation essential information.
Wherein, F is only one and enumerates function, only indicates to have a corresponding target for specific tsur, α, β
Defrost cycle T` defrost, when practical defrost cycle TDefrostFar from T` defrostWhen, then show unit exception, such as practical defrost cycle TDefrostIt is remote small
In target defrost cycle T` defrostWhen, then show that heat exchanger is dirty stifled.
In one example, the defrost period of unit changes with outdoor environment wet and dry bulb temperature, operating load, outdoor heat exchanger
It is hot related.
Such as: meet function TDefrost=F (tsur, α, β).Wherein, TDefrostIndicate the defrost period of unit, tsur indicates outdoor
Environment wet and dry bulb temperature, α indicate operating load rate, and β indicates the situation that exchanges heat when outdoor heat exchanger is dirty stifled.
Wherein, what α, β can be arrived by the sensor observing and controlling that current unit carries, belong to ginseng inside unit self-operating
Number；Outdoor heat exchanger information includes the structural parameters and pressure, temperature of the heat exchangers such as outdoor heat exchanger area, fin configuration itself
Etc. parameters, the current institute's belt sensor of unit can detect.
In one example, identical condition (such as: outdoor environment wet and dry bulb temperature, operating load, heat exchanger change
Heat) when, the defrost period is essentially identical.When heat exchanger occurs dirty stifled, heat exchanger heat transfer effect is deteriorated, heat exchanger evaporating temperature meeting
It reduces, heat exchanger is easier to enter defrost, i.e. defrost cycle time.Wherein, identical condition (such as: outdoor environment wet and dry bulb
Temperature, operating load and defrost cycle TDefrost) comparison, can be compared as unit of day, week, the moon, year.
Such as: N week, under the conditions of certain outdoor environment wet and dry bulb temperature, operating load, the defrost period=M min.Work as machine
When group operation is to N+1 week, under the conditions of identical outdoor environment wet and dry bulb temperature, operating load, defrost period of unit=
(M-15) min, i.e. defrost cycle time 15min, show that heat exchanger is likely to occur situation dirty plugging.Wherein, 15min only for
It lifts, the shortening time in practical defrost period, it may be possible to other values；N, M is natural number.
Essential information and the functional relation between the defrost period are run by unit as a result, can further be promoted and be based on
Unit operation essential information and defrost period judge heat exchanger reliability whether dirty plugging and safety, and judging result accuracy
Good, judgment mode is versatile.
It can also include: cleaning unit 106 in conjunction with determination unit 104 in an optional embodiment.Pass through cleaning
Unit 106, in conjunction with the determining dirty stifled situation of heat exchanger, can heat exchanger is dirty block up serious when further determine whether to need it is clear
It washes.
In one example, cleaning unit 106, be determined for the heat exchanger it is dirty it is stifled after, continue to obtain the machine
The defrost period of group, and obtain the unit it is dirty stifled when heating information in heating mode.The tool of the cleaning unit 106
Body function and processing are referring to step S210.
In one example, cleaning unit 106 can be also used in the second preset duration, when continue obtain described in
The defrost period constantly shortens and when the heating information meets default heating condition, and the heat exchanger is cleaned in determination.It should
The concrete function of cleaning unit 106 and processing see also step S220.
In one example, if in long-time, the unit defrost period constantly shortens, and when influencing unit heating effect,
It then prompts unit outdoor heat exchanger dirty stifled very serious, needs periodically to be cleaned.
Such as: N week, under the conditions of certain outdoor environment wet and dry bulb temperature, operating load, the defrost period=M min, unit
Heating operation, P DEG C of indoor environment temperature.When unit was run to N+1 week, identical outdoor environment wet and dry bulb temperature, fortune
Under row loading condiction, defrost period=(M-15) min of unit, indoor environment temperature is only capable of reaching (P-5) DEG C, then shows outdoor
Heat exchanger is likely to occur situation dirty plugging；Meanwhile the dirty stifled operational effect for having influenced unit of outdoor heat exchanger at this time, so that shadow
Ring the heating effect of indoor.Wherein, indoor environment temperature P and (P-5) DEG C, by way of example only, practical indoor environment temperature
It may be other values.
Judge as a result, heat exchanger it is dirty it is stifled after, whether can further judging dirty plugging serious, and it is dirty block up serious when determine
Cleaning, to promote the heat transfer effect of heat exchanger and the usage experience of user.
Optionally, the cleaning unit 106 may include: the dirty stifled judgment module 1062 of heating, or the dirty stifled judgement of refrigeration
Module 1064.
In one example, dirty stifled judgment module 1062, when can be used for the unit heating operation, the unit are heated
Indoor fan supply air temperature lower than default heating supply air temperature.
Such as: machine supply air temperature is relatively low in unit heating operation.
In one example, freeze dirty stifled judgment module 1064, when can be used for the unit refrigerating operaton, the unit
The supply air temperature of indoor fan be higher than default refrigeration supply air temperature.
Such as: machine supply air temperature is higher in unit refrigerating operaton.
As a result, by judging the supply air temperature of indoor fan in heating mode or refrigeration mode, heat exchanger can be determined
Serious conditions dirty plugging, and then determine whether to clean, the judging result of the dirty stifled situation of one side heat exchanging device is accurate, reliable, separately
On the one hand good convenient for maintenance heat exchanger, user experience in time.
The processing and function realized by the device of the present embodiment essentially correspond to earlier figures 1 to method shown in Fig. 4
Embodiment, principle and example, therefore not detailed place in the description of the present embodiment may refer to mutually speaking on somebody's behalf in previous embodiment
Bright, this will not be repeated here.
The unit operation essential information of refrigeration system is detected using technical solution of the present invention through a large amount of verification experimental verification
(such as: unit runs essential information) and the defrost period, reflect the dirty stifled situation of unit outdoor heat exchanger, and change in time outdoor
Hot device is cleaned, to improve the heat transfer effect of heat exchanger, and the difficulty that heat exchanging device is safeguarded is small, also helps promotion
The usage experience of user.
According to an embodiment of the invention, additionally providing a kind of air-conditioning for corresponding to the dirty stifled judgment means for heat exchanger.
The air-conditioning may include: the dirty stifled judgment means for heat exchanger.
Such as: the air-conditioning, heat exchanging device carry out the process of dirty stifled judgement, may include:
Step 1: the unit for obtaining unit local environment runs essential information.
GPRS module is installed on unit, with unit real-time communication.Unit location can be collected by GPRS module
Long date (such as: in preset duration) unit operation essential information (such as: temperature, humidity, wind direction wind-force, haze index
Deng), these parameters are then transferred to unit.
Wherein, these units operation essential information is mainly from two aspects: 1. providing from national authority meteorological department
Each department climate parameter, such as haze degree, PM2.5 value, weather condition；2. the unit that unit itself GPRS module is collected into
Individual unit runs essential information, such as running environment wet and dry bulb temperature when unit operation.
Step 2: obtaining the defrost period of unit, and the dirty stifled situation of comprehensive descision outdoor heat exchanger.
(1) unit enters defrost condition
The defrost period of unit is counted, normal heating operation during the adjacent defrost twice of defrost period, that is, unit
Time.
Unit defrost cycle control methods are as follows: install temperature sensing package, that is, defrost temperature in unit outdoor heat exchanger heat exchange pipe external surface
Temperature sensing package is spent, defrost temperature is detected, when unit heating operation under dry, wet-bulb temperature environment outside given chamber, if defrost temperature
Degree is lower than certain particular value, then unit enters defrost.
(2) the dirty stifled influence to the refrigeration system defrost period of outdoor heat exchanger
Example shown in Figure 7, when outdoor heat exchanger is dirty stifled, when heating operation, outdoor heat exchanger heat transfer effect
It can be deteriorated, the heat exchanged thermoresistance for being equivalent to refrigerant and air in the external world in heat exchanger increases.At identical conditions (such as: it is outdoor
Wet and dry bulb temperature is identical), the evaporating temperature of refrigerant can reduce in outdoor heat exchanger, so as to cause the reduction of defrost temperature, defrost temperature
Degree can be down to defrost threshold value quickly, and unit enters defrost quickly, i.e. the defrost period can shorten.
Example shown in Figure 8, defrost period and outdoor environment wet and dry bulb temperature, operating load, the outdoor of unit are changed
Hot device heat exchange is related, such as: meet function TDefrost=F (tsur, α, β).Wherein, TDefrostIndicate the defrost period of unit, tsur table
Show that outdoor environment wet and dry bulb temperature, α indicate operating load rate, β indicates the situation that exchanges heat when outdoor heat exchanger is dirty stifled.
Identical condition (such as: outdoor environment wet and dry bulb temperature, operating load, heat exchanger heat exchange) when, the defrost period
It is essentially identical.When heat exchanger occurs dirty stifled, heat exchanger heat transfer effect is deteriorated, and heat exchanger evaporating temperature can reduce, and heat exchanger is more
It is easily accessible defrost, i.e. defrost cycle time.Wherein, identical condition (such as: outdoor environment wet and dry bulb temperature, operating load,
And defrost cycle TDefrost) comparison, can be compared as unit of day, week, the moon, year.
Such as: N week, under the conditions of certain outdoor environment wet and dry bulb temperature, operating load, the defrost period=M min.Work as machine
When group operation is to N+1 week, under the conditions of identical outdoor environment wet and dry bulb temperature, operating load, defrost period of unit=
(M-15) min, i.e. defrost cycle time 15min, show that heat exchanger is likely to occur situation dirty plugging.Wherein, 15min only for
It lifts, the shortening time in practical defrost period, it may be possible to other values；N, M is natural number.
(3) heat exchanger comprehensive descision dirty plugging
1. heat exchanging device is dirty stifled when being judged, it is based primarily upon two conditions.Wherein, main Rule of judgment are as follows: defrost week
Phase variation；Auxiliary judgment condition are as follows: the unit operation essential information variation on machine group leader's date.
Such as: the operation essential information variation of the unit on bonding machine group leader's date and the variation in unit defrost period, it can be with
Judge the dirty stifled situation of unit outdoor heat exchanger.
When the unit operation essential information performance on machine group leader's date are as follows: units' installation amblent air temperature haze is very serious, together
When unit defrost cycle time when, it can be said that bright unit outdoor heat exchanger occur it is dirty stifled.
Because of unit defrost cycle time, reason might not be that heat exchanger is dirty stifled entirely, may there is other reasons.But machine
Group defrost cycle time, while unit local climate parameter haze always in this time, then unit defrost cycle time reason
Substantially it can be determined that heat exchanger is dirty stifled.
2. if the unit defrost period constantly shortens in long-time, and when influencing unit heating effect (such as: unit system
Heat run in when machine supply air temperature is relatively low, machine supply air temperature is higher in refrigerating operaton), then prompt unit outdoor heat exchanger it is dirty block up it is non-
Chang Yanchong needs periodically to be cleaned.
Such as: N week, under the conditions of certain outdoor environment wet and dry bulb temperature, operating load, the defrost period=M min, unit
Heating operation, P DEG C of indoor environment temperature.When unit was run to N+1 week, identical outdoor environment wet and dry bulb temperature, fortune
Under row loading condiction, defrost period=(M-15) min of unit, indoor environment temperature is only capable of reaching (P-5) DEG C, then shows outdoor
Heat exchanger is likely to occur situation dirty plugging；Meanwhile the dirty stifled operational effect for having influenced unit of outdoor heat exchanger at this time, so that shadow
Ring the heating effect of indoor.Wherein, indoor environment temperature P and (P-5) DEG C, by way of example only, practical indoor environment temperature
It may be other values.
The processing and function realized by the air-conditioning of the present embodiment essentially correspond to earlier figures 5 and device shown in fig. 6
Embodiment, principle and example, therefore not detailed place in the description of the present embodiment may refer to mutually speaking on somebody's behalf in previous embodiment
Bright, this will not be repeated here.
Through a large amount of verification experimental verification, using technical solution of the present invention, by GPRS to the basic letter of unit operation of unit
The acquisition of breath is analyzed in conjunction with operation data, and in the long date, unit climatic environment is severe, while identical external parameter (example
Such as: unit runs essential information) under the conditions of, when unit defrost cycle time, then judge that refrigeration system outdoor heat exchanger is dirty stifled.
To sum up, it will be readily appreciated by those skilled in the art that under the premise of not conflicting, above-mentioned each advantageous manner can be certainly
It combined, be superimposed by ground.
The above description is only an embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should be included within scope of the presently claimed invention.
Claims (15)
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| CN106989489A (en) * | 2017-04-19 | 2017-07-28 | 珠海格力电器股份有限公司 | Replacement reminding method and device for air conditioner filtering device and air conditioner |
| CN108397852B (en) * | 2018-01-22 | 2020-04-10 | 青岛海尔空调器有限总公司 | Self-cleaning control method for air conditioner and air conditioner |
| CN109237746B (en) * | 2018-09-12 | 2021-04-20 | 青岛海尔空调器有限总公司 | Air conditioner and control method thereof |
| CN109974204B (en) * | 2019-04-01 | 2020-10-20 | 珠海格力电器股份有限公司 | Control method and device of air conditioner with defrosting condition correction function |
| CN111023282A (en) * | 2019-12-27 | 2020-04-17 | 宁波奥克斯电气股份有限公司 | Indoor unit self-cleaning control method and air conditioner |
| CN114413646A (en) * | 2020-10-28 | 2022-04-29 | 艾默生环境优化技术(苏州)有限公司 | Dirty blockage state determination device and determination method for condenser |
| CN112413811A (en) * | 2020-11-26 | 2021-02-26 | 珠海格力电器股份有限公司 | Dust removal device, heat exchanger, air conditioner and dust removal method of air conditioner heat exchanger |
| CN112594868B (en) * | 2020-12-30 | 2021-11-23 | 广东积微科技有限公司 | Air conditioner and defrosting control method thereof |
| CN114235451B (en) * | 2021-11-15 | 2023-09-26 | 青岛海尔空调电子有限公司 | Heat exchanger detection method, storage medium and electronic equipment |
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| JP2012052679A (en) * | 2010-08-31 | 2012-03-15 | Panasonic Corp | Outdoor unit of air conditioner |
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| CN1263238A (en) * | 2000-02-03 | 2000-08-16 | 清华泰豪科技股份有限公司 | Defrost control method of air-cooled heat-pump air-conditioner and its device |
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| CN203869253U (en) * | 2013-11-21 | 2014-10-08 | 广东美的制冷设备有限公司 | Air conditioner and filth blockage detection control device thereof |
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