CN104456859B - Air conditioner and defrosting control method and device thereof - Google Patents
Air conditioner and defrosting control method and device thereof Download PDFInfo
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- CN104456859B CN104456859B CN201310416593.5A CN201310416593A CN104456859B CN 104456859 B CN104456859 B CN 104456859B CN 201310416593 A CN201310416593 A CN 201310416593A CN 104456859 B CN104456859 B CN 104456859B
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- 238000010257 thawing Methods 0.000 title claims abstract description 109
- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000010438 heat treatment Methods 0.000 claims abstract description 83
- 238000001514 detection method Methods 0.000 claims description 41
- 238000004364 calculation method Methods 0.000 claims description 28
- 238000005057 refrigeration Methods 0.000 claims description 18
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 230000002045 lasting effect Effects 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 11
- 230000008859 change Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
Classifications
-
- 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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an air conditioner and a defrosting control method and device thereof. The defrosting control method of the air conditioner comprises the following steps: detecting the heating operation current of an outdoor unit motor of the air conditioner in real time in the heating operation mode of the air conditioner; calculating the thickness of a frost layer of an outdoor heat exchanger of the air conditioner according to the heating operation current; judging whether the thickness of the frost layer is larger than a first preset thickness; and controlling the air conditioner to enter defrosting operation under the condition that the thickness of the frost layer is larger than the first preset thickness. According to the invention, the problem of low accuracy of the defrosting control method of the air conditioner in the prior art is solved, and the effect of improving the defrosting accuracy of the air conditioner is further achieved.
Description
Technical field
The present invention relates to air-conditioner field, in particular to a kind of air conditioner and its defrosting control method and device.
Background technology
Automatic defrosting technology of the Wind-cooling type heat pump air conditioner unit in heating operation, it is more and more ripe, occur many new
Intelligent Defrost technology, but all there is the defect of itself in many technologies.
A kind of method that change using outdoor DC fan electric current is defrosted to air conditioner is disclosed in the prior art,
The Defrost method calculates difference with the current maxima, the minimum value that detect and judged, with tiring out for unit operation time
Product, the serious laying dust in heat exchanger side and weathering etc. cause changing for heat exchanger resistance itself, above-mentioned Defrost method still with
Initial current differential is judged that accuracy is substantially reduced, and the advantage of the program will become inferior position, cause unit erroneous judgement
With the waste of the energy.
For air conditioner in correlation technique defrosting control method accuracy it is low the problem of, effective solution is not yet proposed at present
Certainly scheme.
The content of the invention
It is a primary object of the present invention to provide a kind of air conditioner and its defrosting control method and device, to solve existing skill
The problem of defrosting control method accuracy of air conditioner is low in art.
To achieve these goals, according to an aspect of the invention, there is provided a kind of defrosting control method of air conditioner,
It is characterised in that it includes：Under air conditioner heat-production operational mode, the running current of detection air-conditioner outdoor unit motor, is obtained in real time
To the first heating operation electric current；According to the frost thickness of the first heating operation Current calculation air conditioner chamber external heat exchanger；Judge root
Whether the frost thickness calculated according to the first heating operation galvanometer is more than the first preset thickness；And judging according to the first system
In the case that the frost thickness that hot running current is calculated is more than the first preset thickness, control air conditioner enters Defrost operation.
Further, after control air conditioner enters Defrost operation, defrosting control method also includes：In air conditioner defrosting
Under operational mode, the running current of the pipe temperature of detection outdoor heat exchanger and motor, obtains heat exchanger tube temperature and the second system in real time
Hot running current；According to the frost thickness of the second heating operation Current calculation outdoor heat exchanger；Judge according to the second heating operation
Whether the frost thickness that galvanometer is calculated is less than the second preset thickness, and judges whether heat exchanger tube temperature is more than preset temperature, its
In, the first preset thickness is more than the second preset thickness；And in the frost layer for judging to be calculated according to the second heating operation galvanometer
Thickness is less than the second preset thickness, and heat exchanger tube temperature, more than in the case of preset temperature, control air conditioner exits defrosting fortune
OK.
Further, it is thick according to the frost layer of the first heating operation electric current or the second heating operation Current calculation outdoor heat exchanger
Degree includes：According to the pressure differential of the first heating operation electric current or the second heating operation Current calculation outdoor heat exchanger both sides air
Value, air pressure difference when obtaining heating；And frost thickness is calculated according to air pressure difference when heating.
Further, defrosting control method also includes：Judge air conditioner whether in lasting refrigeration mode；And judging
Go out air conditioner be in continue refrigeration mode in the case of, correct outdoor heat exchanger pressure difference.
Further, judge whether air conditioner includes in lasting refrigeration mode：Under air conditioner cooling operation mode, obtain
Take the total number of run and refrigerating operaton number of times of air conditioner；Calculate the ratio of refrigerating operaton number of times and total number of run；And sentence
Whether the disconnected ratio calculated is more than or equal to preset value, wherein, it is more than or equal to preset value in the ratio for judging to calculate
In the case of, determine that air conditioner is in and continue refrigeration mode.
Further, the pressure difference of amendment outdoor heat exchanger includes：Under air conditioner cooling operation mode, air-conditioning is detected in real time
The running current of device outdoor unit motor, obtains refrigerating operaton electric current；Calculate outdoor heat exchanger two corresponding with refrigerating operaton electric current
The pressure difference value of side, obtains air pressure difference during refrigeration；And determine that the corresponding frost thickness of air pressure difference is zero during with freezing.
To achieve these goals, according to another aspect of the present invention there is provided a kind of defrosting control device of air conditioner,
Including：First detection unit, under air conditioner heat-production operational mode, the operation of detection air-conditioner outdoor unit motor to be electric in real time
Stream, obtains the first heating operation electric current；First computing unit, for being changed according to outside the first heating operation Current calculation air conditioner chamber
The frost thickness of hot device；First judging unit, for the frost thickness that judges to be calculated according to the first heating operation galvanometer whether
More than the first preset thickness；And first control unit, in the frost for judging to be calculated according to the first heating operation galvanometer
In the case that thickness degree is more than the first preset thickness, control air conditioner enters Defrost operation.
Further, defrosting control device also includes：Second detection unit, under air conditioner Defrost operation pattern,
The running current of the pipe temperature of detection outdoor heat exchanger and motor, obtains heat exchanger tube temperature and the second heating operation electric current in real time；
Second computing unit, for the frost thickness according to the second heating operation Current calculation outdoor heat exchanger；Second judging unit, is used
Whether it is less than the second preset thickness, and judge heat exchanger tube temperature in the frost thickness for judging to calculate according to the second heating operation galvanometer
Whether degree is more than preset temperature, wherein, the first preset thickness is more than the second preset thickness；And second control unit, for
Judge that the frost thickness calculated according to the second heating operation galvanometer is less than the second preset thickness, and heat exchanger tube temperature is more than
In the case of preset temperature, control air conditioner exits Defrost operation.
Further, the first detection unit includes the first current detector, and the second detection unit includes the second current detecting
Device and temperature sensor.
Further, temperature sensor is disposed in the outdoor on heat exchanger, and is arranged on below first level face, wherein,
The distance between outdoor heat exchanger upper surface and first level face are equal between outdoor heat exchanger lower surface and first level face
Distance.
To achieve these goals, there is provided a kind of air conditioner, including the present invention are above-mentioned according to another aspect of the present invention
The defrosting control device for any air conditioner that content is provided.
The present invention is using under air conditioner heat-production operational mode, and the heating operation of detection air-conditioner outdoor unit motor is electric in real time
Stream；According to the frost thickness of heating operation Current calculation air conditioner chamber external heat exchanger；Judge whether frost thickness is more than first pre-
If thickness；And in the case where judging that frost thickness is more than the first preset thickness, control air conditioner enters Defrost operation.By
In the running current of direct current generator be input power through over commutation, SPM（Intelligent Power Module,
Abbreviation IPM）Exported after processing to the phase current of direct current generator, the running current is in the same running frequency of direct current generator and operation
In the case of load, not fluctuated by power input voltage is influenceed.In air conditioner running, frosting or defrosting can be caused
Direct current generator load change, the running current for further resulting in direct current generator is changed, understood based on foregoing description, direct current
The running current of machine is not influenceed by other factorses, therefore, it is possible to be determined by the running current of direct current generator in air conditioner
The frost thickness of outdoor heat exchanger, and then in the case where frost thickness reaches to a certain degree, air conditioner Defrost operation is controlled, this
In planting Defrost mode compared with the prior art for the Defrost mode based on current differential, the degree of accuracy is higher, solves prior art
The problem of defrosting control method accuracy of middle air conditioner is low, and then reached the effect for improving the air conditioner defrosting degree of accuracy.
Brief description of the drawings
The accompanying drawing for constituting the part of the application is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the schematic diagram of the defrosting control device of air conditioner according to embodiments of the present invention；
Fig. 2 is the defrosting schematic diagram of defrosting control device in Fig. 1；
Fig. 3 is the flow chart of the defrosting control method of air conditioner according to embodiments of the present invention；
Fig. 4 is that the defrosting control method of air conditioner according to embodiments of the present invention enters the decision flowchart of defrosting；
Fig. 5 is that the defrosting control method of air conditioner according to embodiments of the present invention exits the decision flowchart of defrosting；And
Fig. 6 is that the defrosting control method of air conditioner according to embodiments of the present invention carries out the flow of heat exchanger pressure difference amendment
Figure.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
The embodiments of the invention provide a kind of defrosting control device of air conditioner, the embodiment of the present invention is provided below
Defrosting control device is specifically introduced;
Fig. 1 is the schematic diagram of the defrosting control device of air conditioner according to embodiments of the present invention, as shown in figure 1, the defrosting
Control device mainly includes the first detection unit 10, the first computing unit 20, the first judging unit 30 and the first control unit 40,
Specifically：
First detection unit 10 is used under air conditioner heat-production operational mode, in real time the fortune of detection air-conditioner outdoor unit motor
Row electric current, obtains the first heating operation electric current, specifically, the first detection unit 10 can be current transformer or its
It can carry out the device of current detecting.
First computing unit 20 is used for the frost thickness according to the first heating operation Current calculation air conditioner chamber external heat exchanger,
Specifically, the first computing unit 20 can be first according to the pressure differential of the first heating operation Current calculation outdoor heat exchanger both sides air
Value △ P, obtain heating pressure difference, and then according to the frost thickness for heating pressure difference calculating outdoor heat exchanger, specific calculation is as follows：
First, pressure difference value △ P corresponding with electric current I is calculated according to formula △ P=k1*I, wherein, k1 is predetermined coefficient,
The coefficient is determined by the The concrete specification of air conditioner；
Then, according to formulaFrost thickness D corresponding with pressure difference value △ P is calculated, wherein, △ P tables
Show heat exchanger air side pressure difference；D represents heat exchanger surface frost thickness；λ represents constant；N represents natural number not for 1, and k2 is same
Sample is the predetermined coefficient determined by the The concrete specification of air conditioner.
Whether the first judging unit 30 is used to judging the frost thickness that is calculated according to the first heating operation galvanometer more than the
One preset thickness D1.
First control unit 40 is used to be more than the in the frost thickness for judging to calculate according to the first heating operation galvanometer
In the case of one preset thickness D1, control air conditioner enters Defrost operation.
Because the running current of direct current generator is input power through over commutation, SPM（Intelligent
Power Module, abbreviation IPM）Exported after processing to the phase current of direct current generator, the running current is in direct current generator same
In the case of running frequency and operation load, not fluctuated by power input voltage is influenceed.In air conditioner running, frosting
Or direct current generator load change caused by defrosting meeting, the running current for further resulting in direct current generator changes, based on above-mentioned
Description understands that the running current of direct current generator is not influenceed by other factorses, therefore, the air conditioner that the embodiment of the present invention is provided
Defrosting control device the frost thickness of outdoor heat exchanger can be determined by running current, and then reach one in frost thickness
In the case of determining degree, air conditioner Defrost operation is controlled, such a scheme that defrosting control is carried out based on frost thickness ensure that
Outdoor heat exchanger enter defrosting opportunity just, Defrost mode compared with the prior art in the Defrost mode based on current differential and
Speech, the degree of accuracy is higher, solve air conditioner in the prior art defrosting control method accuracy it is low the problem of, and then reached and carried
The effect of the high air conditioner defrosting degree of accuracy.
Further, defrosting control device also includes the second detection unit, the second computing unit, the second judging unit and the
Two control units, specifically：
Second detection unit is used under air conditioner Defrost operation pattern, in real time the pipe temperature and electricity of detection outdoor heat exchanger
The running current of machine, obtains heat exchanger tube temperature T and the second heating operation electric current, specifically, and the second detection unit includes carrying out electricity
Flow detection device cell, can be current transformer or it is other can carry out the device of current detecting, can also wrap
The device cell for carrying out temperature detection is included, can be temperature sensor or other can carry out the device of temperature detection.
Second computing unit is used for the frost thickness according to the second heating operation Current calculation outdoor heat exchanger, specific to calculate
Mode is identical with the calculation of above-mentioned first computing unit, and here is omitted.
Second judging unit is used to judge whether the frost thickness calculated according to the second heating operation galvanometer is less than second
Preset thickness D2, and judge whether heat exchanger tube temperature T is more than preset temperature T1, wherein, it is pre- that the first preset thickness D1 is more than second
If thickness D2.
Second control unit is used to be less than second in the frost thickness for judging to calculate according to the second heating operation galvanometer
Preset thickness D2, and heat exchanger tube temperature T is more than preset temperature in the case of him, and control air conditioner exits Defrost operation.
The defrosting control device of the embodiment of the present invention, frost layer during air conditioner Defrost operation is detected by the second detection unit
The heat exchanger tube temperature of thickness and outdoor heat exchanger, the heat exchanger tube temperature based on frost thickness and outdoor heat exchanger carries out defrosting and exited
The scheme of control, is realized in the case where ensureing that unit defrosting is clean, control air conditioner exits Defrost operation in time, realizes
Shorten the defrosting time of air conditioner, control air conditioner reaches that defrosting is clean without remnants within the shortest time.
Preferably, the device of temperature detection is carried out in the second detection unit（Such as temperature sensor）It is disposed in the outdoor heat exchanger
On, and be arranged on below first level face, wherein, the distance between outdoor heat exchanger upper surface and first level face are equal to room
The distance between external heat exchanger lower surface and first level face, i.e. temperature detection device is disposed in the outdoor the middle and lower part of heat exchanger.
During outdoor heat exchanger defrosting, frost layer thawing is typically from top to bottom that middle and lower part is generally last just to defrost totally,
It is that temperature detection device is arranged on into heat exchanger to be most difficult to by the way that temperature detection device to be arranged to the middle and lower part of outdoor heat exchanger
The clean position of defrosting, has reached the drawbacks of avoiding defrosting unclean and freeze.
It should be noted that the current detector in current sensing device and the second detection unit in the first detection unit
Part can be same current sensing device, or different current sensing devices, the first control unit and the second control
Unit can be same control unit, or different control units.First computing unit, the second computing unit,
One judging unit and the second judging unit are similarly.First control unit, the second control unit, the first computing unit, the second meter
Same control device can also be integrated into by calculating unit, the first judging unit and the second judging unit.
The schematic diagram that defrosting control is carried out using the defrosting control device of the embodiment of the present invention is diagrammatically illustrated in Fig. 2,
Wherein, current detecting unit includes the electric current in current sensing device and the second detection unit in the first detection unit in Fig. 2
Device is detected, main control unit includes the first control unit, the second control unit, the first computing unit, the second computing unit, first
Judging unit and the second judging unit.Carrying out the principle that controls of defrosting is：
During air conditioner heat-production is run, the running current of outdoor motor 46 is examined by the electric current being made up of current transformer
Survey unit 45 is converted to AD signals and is sent to main control unit 44, and main control unit 44 is calculated by the analysis to data, and is sentenced
It is disconnected, then send corresponding（Heating operation or Defrost operation）Order is performed to outdoor fan 46 and other executing agencies（Four
Port valve, compressor etc.）43, if meeting defrosting entry condition, main control unit 44 sends Defrost operation execution order and performed to each
Mechanism, air conditioner enters Defrost operation, otherwise continues heating operation；During air conditioner Defrost operation, the fortune of outdoor motor 46
Row electric current is converted to AD signals by the current detecting unit 45 being made up of current transformer and is sent to main control unit 44, meanwhile,
Heat exchanger tube temperature transition is that AD signals are sent to main control unit 44, master control by the temperature sensor 42 of the middle and lower part of outdoor heat exchanger 41
Unit 44 is calculated by the analysis to data, and is judged, then sends corresponding（Heating operation or Defrost operation）Perform
Order to outdoor fan 46 and other executing agencies（Four-way valve, compressor etc.）43, if meeting defrosting exit criteria, master control
The execution order that unit 44 sends heating operation enters heating operation to each executing agency, otherwise continues Defrost operation.
The embodiment of the present invention additionally provides a kind of defrosting control method of air conditioner, and the defrosting control method can be by this
The defrosting control device that inventive embodiments the above is provided is performed, the defrosting control provided below the embodiment of the present invention
Method is specifically introduced：
Fig. 3 is the flow chart of defrosting control method according to embodiments of the present invention, as shown in figure 3, the defrosting control method
Including steps S302 to step S308：
S302：Under air conditioner heat-production operational mode, the first heating operation of detection air-conditioner outdoor unit motor is electric in real time
Stream, specifically, can also can carry out operation of the device to motor of current detecting by current transformer by other
Electric current is detected.
S304：According to the frost thickness of the first heating operation Current calculation air conditioner chamber external heat exchanger, specifically, such as Fig. 4
It is shown, mainly included according to the frost thickness of the first heating operation Current calculation air conditioner chamber external heat exchanger：First according to the first system
Hot running current calculates the pressure difference value △ P of outdoor heat exchanger both sides air, air pressure difference when obtaining heating, then according to heating
When air pressure difference counting chamber external heat exchanger frost thickness.
S306：Judge whether the frost thickness calculated according to the first heating operation galvanometer is more than the first preset thickness D1.
S308：It is more than the feelings of the first preset thickness in the frost thickness for judging to calculate according to the first heating operation galvanometer
Under condition, control air conditioner enters Defrost operation.
Because the running current of direct current generator is input power through over commutation, SPM（Intelligent
Power Module, abbreviation IPM）Exported after processing to the phase current of direct current generator, the running current is in direct current generator same
In the case of running frequency and operation load, not fluctuated by power input voltage is influenceed.In air conditioner running, frosting
Or direct current generator load change caused by defrosting meeting, the running current for further resulting in direct current generator changes, based on above-mentioned
Description understands that the running current of direct current generator is not influenceed by other factorses, therefore, the air conditioner that the embodiment of the present invention is provided
Defrosting control device the frost thickness of outdoor heat exchanger can be determined by the running current of direct current generator in air conditioner, enter
And in the case where frost thickness reaches to a certain degree, air conditioner Defrost operation is controlled, it is such a to be defrosted based on frost thickness
The scheme of control, ensure that outdoor heat exchanger enter defrosting opportunity just, Defrost mode compared with the prior art in based on electricity
For the Defrost mode for flowing difference, the degree of accuracy is higher, and the defrosting control method accuracy for solving air conditioner in the prior art is low
The problem of, and then reached the effect for improving the air conditioner defrosting degree of accuracy.
Further, as shown in figure 5, control air conditioner enter Defrost operation after, the defrosting control of the embodiment of the present invention
Method processed also includes：First, under air conditioner Defrost operation pattern, the pipe temperature of outdoor heat exchanger and the fortune of motor are detected in real time
Row electric current, obtains heat exchanger tube temperature T and the second heating operation electric current, specifically, and the second detection unit includes carrying out current detecting
Device cell, can be current transformer or it is other can carry out the device of current detecting, can also include carry out
The device cell of temperature detection can be temperature sensor or other can carry out the device of temperature detection.Secondly,
According to the frost thickness of the second heating operation Current calculation outdoor heat exchanger, specific calculation heats fortune with above-mentioned according to first
The calculation of row Current calculation frost thickness is identical, and here is omitted.Then, judge according to the second heating operation galvanometer
Whether the frost thickness calculated is less than the second preset thickness D2, and judges whether heat exchanger tube temperature T is more than preset temperature T1, its
In, the first preset thickness D1 is more than the second preset thickness D2.Subsequently, judging to be calculated according to the second heating operation galvanometer
Frost thickness be less than the second preset thickness, and heat exchanger tube temperature be more than preset temperature in the case of, control air conditioner exit
Defrost operation.
The defrosting control method of the embodiment of the present invention, frost layer during air conditioner Defrost operation is detected by the second detection unit
The heat exchanger tube temperature of thickness and outdoor heat exchanger, the heat exchanger tube temperature based on frost thickness and outdoor heat exchanger carries out defrosting and exited
The scheme of control, is realized in the case where ensureing that unit defrosting is clean, control air conditioner exits Defrost operation in time, realizes
Shorten the defrosting time of air conditioner, control air conditioner reaches that defrosting is clean without remnants within the shortest time.
Preferably, the detection to outdoor heat exchanger temperature is mainly in the portion below first level face to outdoor heat exchanger
Point detected, wherein, the distance between outdoor heat exchanger upper surface and first level face be equal to outdoor heat exchanger lower surface with
The distance between first level face, i.e. the temperature to outdoor heat exchanger middle and lower part is detected.
Because air-cooled heat pump type air conditioner is in cold district heating operation, the link of frosting and defrosting turns into restriction air-conditioning
The key factor of device entirety heating effect, in order to play the maximum heating effect of air conditioner it is necessary to ensureing that outdoor heat exchanger is each
Secondary defrosting entry time it is lucky, and defrosting of defrosting when exiting be clean without remnants, i.e. when accomplishing air conditioner most short defrosting
Between, and defrosting is clean.Therefore, the defrosting that the above-mentioned defrosting control method of the embodiment of the present invention is formulated enters and exited decision condition
There is nuance：The frost thickness calculated in the judgement entered for defrosting, the technical scheme of above-described embodiment is heat exchanger side
The integral thickness of frost layer（That is average thickness）, it can directly embody frost layer exchange thermal effect（And then directly affect heating effect）
Influence degree, with it determine that optimal entry time is not in too early to enter the problem of defrosting；For sentencing that defrosting is exited
It is fixed, in the technical scheme of above-described embodiment while using frost thickness, the temperature T surveyed with reference to heat exchanger side pipe temperature detector, two
Person together decides on exiting for defrosting, because during outdoor heat exchanger defrosting, frost layer is melted generally from top to bottom, and middle and lower part is usual
Finally just defrost clean, the position that pipe temperature detector is surveyed in this scheme is arranged at heat exchanger and is most difficult to the clean position of defrosting, is managed at this
Ability Safe withdrawing Defrost operation when temperature reaches setting value T1, it is ensured that unit defrosting is clean, it is to avoid the defrosting after multiple defrosting cycles
The problem of cleared-out does not freeze now.
It is further preferred that the defrosting control method of the embodiment of the present invention also includes：Judge air conditioner whether in lasting
Refrigeration mode, in the case where judging that air conditioner is in lasting refrigeration mode, corrects the pressure difference of outdoor heat exchanger, in the present invention
In embodiment, the so-called refrigeration mode that continues refers to that air conditioner works in refrigeration season.
Because heat exchanger has the influence of laying dust and aging during permanent use, cause the resistance of heat exchanger in itself
With initial difference, heat exchanging device side air pressure difference Δ P and frost thickness D calculating are influenced whether, by increasing heat exchanging device side
The amendment link of pressure difference, has reached the effect of the above-mentioned calculating accuracy of guarantee.Wherein, in order to ensure that unit heat exchanging device side pressure is poor
The process being modified, heat exchanger side does not have any frost layer, and above-mentioned amendment step is in refrigeration season（That is, air conditioner, which is in, continues
In the case of refrigeration mode）Carried out during air conditioner refrigerating operaton.
Specifically, judge air conditioner whether in the mode for continuing refrigeration mode the embodiments of the invention provide a kind of：It is first
First, under air conditioner cooling operation mode, the total number of run and refrigerating operaton number of times of air conditioner are obtained, for total number of run
With the acquisition of refrigerating operaton number of times, it can be obtained from the main control chip memory of air conditioner.Secondly, calculate refrigerating operaton number of times with
The ratio of total number of run.Then, judge whether the ratio calculated is more than or equal to preset value, wherein, judging to calculate
In the case that the ratio gone out is more than or equal to preset value, determines that air conditioner is in and continue refrigeration mode.
The embodiment of the present invention additionally provides a kind of mode for the pressure difference for correcting outdoor heat exchanger, as shown in Figure 6：First, exist
Under air conditioner cooling operation mode, the running current of detection air-conditioner outdoor unit motor, obtains refrigerating operaton electric current in real time.Its
It is secondary, the pressure difference of outdoor heat exchanger corresponding with refrigerating operaton electric current is calculated, the pressure difference that freezes is obtained.Then, it is determined that with refrigeration pressure difference
Corresponding frost thickness is zero.Wherein, the pressure difference of outdoor heat exchanger corresponding with refrigerating operaton electric current is calculated, with above-mentioned according to system
The mode that hot running current calculates pressure difference is identical, and here is omitted.
In addition, the embodiment of the present invention additionally provides a kind of air conditioner, it is above-mentioned that the air conditioner can include the embodiment of the present invention
The air conditioner or the use embodiment of the present invention of the defrosting control device for any one air conditioner that content is provided are above-mentioned
The air conditioner of the defrosting control method for any one air conditioner that content is provided.
As can be seen from the above description, the present invention realizes following technique effect：Do not increasing wind speed, pressure additionally
On the premise of the sensors such as difference, light, by the service performance of DC fan, surveyed with reference to heat exchanger side pipe temperature detector, outdoor is changed
The frost thickness of hot side makes accurate judgement, and realization has white defrost, and the intelligent defrosting effect of frostless not defrost substantially increases system
Thermal comfort, reduces the waste of the energy.
It should be noted that can be in such as one group computer executable instructions the step of the flow of accompanying drawing is illustrated
Performed in computer system, and, although logical order is shown in flow charts, but in some cases, can be with not
The order being same as herein performs shown or described step.
Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general
Computing device realize that they can be concentrated on single computing device, or be distributed in multiple computing devices and constituted
Network on, alternatively, the program code that they can be can perform with computing device be realized, it is thus possible to they are stored
Performed in the storage device by computing device, either they are fabricated to respectively each integrated circuit modules or by they
In multiple modules or step single integrated circuit module is fabricated to realize.So, the present invention is not restricted to any specific
Hardware and software is combined.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (11)
1. a kind of defrosting control method of air conditioner, it is characterised in that including：
Under the air conditioner heat-production operational mode, the running current of the air-conditioner outdoor unit motor is detected in real time, obtains
One heating operation electric current；
The frost thickness of air conditioner chamber's external heat exchanger according to the first heating operation Current calculation；
Judge whether the frost thickness calculated according to the first heating operation galvanometer is more than the first preset thickness；And
It is more than first preset thickness in the frost thickness for judging to calculate according to the first heating operation galvanometer
In the case of, control the air conditioner to enter Defrost operation；
The frost thickness of outdoor heat exchanger includes according to the first heating operation Current calculation：
The pressure difference value of outdoor heat exchanger both sides air, obtains heating space-time according to the first heating operation Current calculation
Draught head；And the frost thickness is calculated according to air pressure difference during described heat.
2. defrosting control method according to claim 1, it is characterised in that enter Defrost operation controlling the air conditioner
Afterwards, the defrosting control method also includes：
Under the air conditioner Defrost operation pattern, the pipe temperature of the outdoor heat exchanger and the operation of the motor are detected in real time
Electric current, obtains heat exchanger tube temperature and the second heating operation electric current；
The frost thickness of outdoor heat exchanger according to the second heating operation Current calculation；
Judge that whether the frost thickness calculated according to the second heating operation galvanometer is less than the second preset thickness, and sentence
Whether the heat exchanger tube temperature of breaking is more than preset temperature, wherein, first preset thickness is more than second preset thickness；With
And
It is less than second preset thickness in the frost thickness for judging to calculate according to the second heating operation galvanometer,
And in the case that the heat exchanger tube temperature is more than the preset temperature, control the air conditioner to exit Defrost operation.
3. defrosting control method according to claim 2, it is characterised in that according to the second heating operation Current calculation
The frost thickness of the outdoor heat exchanger includes：
The pressure difference value of outdoor heat exchanger both sides air, obtains heating space-time according to the second heating operation Current calculation
Draught head；And
The frost thickness is calculated according to air pressure difference during described heat.
4. defrosting control method according to claim 3, it is characterised in that the defrosting control method also includes：
Judge the air conditioner whether in lasting refrigeration mode；And
In the case where judging that the air conditioner is in the lasting refrigeration mode, the pressure difference of the outdoor heat exchanger is corrected.
5. defrosting control method according to claim 4, it is characterised in that judge the air conditioner whether in lasting system
Chill formula includes：
Under the air conditioner cooling operation mode, the total number of run and refrigerating operaton number of times of the air conditioner are obtained；
Calculate the ratio of the refrigerating operaton number of times and total number of run；And
Judge whether the ratio calculated is more than or equal to preset value,
Wherein, in the case where the ratio for judging to calculate is more than or equal to the preset value, determine that the air conditioner is in
It is described to continue refrigeration mode.
6. defrosting control method according to claim 4, it is characterised in that the pressure difference bag of the amendment outdoor heat exchanger
Include：
Under the air conditioner cooling operation mode, the running current of the air-conditioner outdoor unit motor is detected in real time, is made
Cold operation electric current；
The pressure difference value of outdoor heat exchanger both sides air corresponding with the refrigerating operaton electric current is calculated, the space-time that freezes is obtained
Draught head；And
It is determined that the corresponding frost thickness of air pressure difference is zero during with the refrigeration.
7. a kind of defrosting control device of air conditioner, it is characterised in that including：
First detection unit, under the air conditioner heat-production operational mode, detecting that the outdoor of the air conditioner is electromechanical in real time
The running current of machine, obtains the first heating operation electric current；
First computing unit, the frost layer for air conditioner chamber's external heat exchanger according to the first heating operation Current calculation is thick
Degree, wherein, the frost thickness of outdoor heat exchanger includes according to the first heating operation Current calculation：According to described first
The pressure difference value of outdoor heat exchanger both sides air, air pressure difference when obtaining heating described in heating operation Current calculation；And according to
Air pressure difference when heating calculates the frost thickness；
First judging unit, for judging whether be more than according to the frost thickness that the first heating operation galvanometer is calculated
First preset thickness；And
First control unit, for judging to be more than according to the frost thickness that the first heating operation galvanometer is calculated
In the case of first preset thickness, the air conditioner is controlled to enter Defrost operation.
8. defrosting control device according to claim 7, it is characterised in that the defrosting control device also includes：
Second detection unit, under the air conditioner Defrost operation pattern, the Guan Wen of the outdoor heat exchanger to be detected in real time
The running current of degree and the motor, obtains heat exchanger tube temperature and the second heating operation electric current；
Second computing unit, the frost thickness for the outdoor heat exchanger according to the second heating operation Current calculation；
Second judging unit, for judging whether be less than according to the frost thickness that the second heating operation galvanometer is calculated
Second preset thickness, and judge whether the heat exchanger tube temperature is more than preset temperature, wherein, first preset thickness is more than institute
State the second preset thickness；And
Second control unit, for judging to be less than according to the frost thickness that the second heating operation galvanometer is calculated
Second preset thickness, and the heat exchanger tube temperature controls the air conditioner to move back more than in the case of the preset temperature
Go out Defrost operation.
9. defrosting control device according to claim 8, it is characterised in that
First detection unit includes the first current detector,
Second detection unit includes the second current detector and temperature sensor.
10. defrosting control device according to claim 9, it is characterised in that the temperature sensor is arranged on the room
On external heat exchanger, and it is arranged on below first level face, wherein, the outdoor heat exchanger upper surface and the first level face
The distance between be equal to the distance between the outdoor heat exchanger lower surface and described first level face.
11. a kind of air conditioner, it is characterised in that the defrosting control including the air conditioner any one of claim 7 to 10
Device.
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| CN201310416593.5A CN104456859B (en) | 2013-09-12 | 2013-09-12 | Air conditioner and defrosting control method and device thereof |
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| CN201310416593.5A CN104456859B (en) | 2013-09-12 | 2013-09-12 | Air conditioner and defrosting control method and device thereof |
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| CN104456859A CN104456859A (en) | 2015-03-25 |
| CN104456859B true CN104456859B (en) | 2017-09-26 |
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Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104896672B (en) * | 2015-06-11 | 2018-11-02 | Tcl空调器(中山)有限公司 | The defrosting control method and air conditioner of air conditioner |
| CN105222285B (en) * | 2015-11-03 | 2018-01-23 | 珠海格力电器股份有限公司 | Control system and control method for heating and frosting of air conditioner |
| CN106247708B (en) * | 2016-08-04 | 2018-10-23 | 珠海格力电器股份有限公司 | Defrosting control method and device |
| CN106286257B (en) * | 2016-09-14 | 2017-12-08 | 珠海格力电器股份有限公司 | Compressor control method and device and air conditioner |
| CN106500267B (en) * | 2016-10-31 | 2019-07-19 | 芜湖美智空调设备有限公司 | The defrosting control method and its control device of air conditioner |
| CN106594982B (en) * | 2016-12-01 | 2019-07-26 | 宁波奥克斯电气股份有限公司 | The fan linkage formula Defrost method of air-conditioning |
| CN109695937A (en) * | 2017-10-20 | 2019-04-30 | 奥克斯空调股份有限公司 | A kind of air-conditioner defrosting control method |
| CN108444134A (en) * | 2018-02-14 | 2018-08-24 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method |
| CN108413564B (en) * | 2018-02-14 | 2020-11-27 | 青岛海尔空调器有限总公司 | Anti-freezing control method for indoor unit of air conditioner and air conditioner |
| CN108413565B (en) * | 2018-02-14 | 2020-09-25 | 青岛海尔空调器有限总公司 | Anti-freezing control method for indoor unit of air conditioner and air conditioner |
| CN108386980B (en) * | 2018-03-05 | 2020-06-02 | 奥克斯空调股份有限公司 | Air conditioner defrosting control method and device |
| CN108981081A (en) * | 2018-06-25 | 2018-12-11 | 广东海悟科技有限公司 | A kind of intelligent defrosting method |
| CN109237727A (en) * | 2018-08-28 | 2019-01-18 | 青岛海尔空调电子有限公司 | defrosting control method for air conditioner |
| CN109882994A (en) * | 2018-12-18 | 2019-06-14 | 珠海格力电器股份有限公司 | Air conditioner defrosting device and control method |
| CN109520072A (en) * | 2018-12-27 | 2019-03-26 | 重庆大学 | A kind of air source heat pump frosting dynamic monitoring method and system |
| CN109869951B (en) * | 2018-12-29 | 2020-12-25 | 青岛海尔股份有限公司 | Refrigeration system, refrigerator and control method |
| CN109855235A (en) * | 2019-01-28 | 2019-06-07 | 四川长虹电器股份有限公司 | A kind of air conditioner defrosting system and method |
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| CN110736195B (en) * | 2019-09-30 | 2021-11-23 | 青岛海尔空调器有限总公司 | Air conditioner self-cleaning control method and device and air conditioner |
| CN111380152B (en) * | 2020-03-27 | 2021-12-17 | 广东美的制冷设备有限公司 | High-temperature sterilization control method and device, air conditioner and storage medium |
| CN111457554A (en) * | 2020-04-20 | 2020-07-28 | 宁波奥克斯电气股份有限公司 | Defrosting control method and device and air conditioner |
| CN111692710B (en) * | 2020-06-24 | 2021-09-21 | 宁波奥克斯电气股份有限公司 | Control method for preventing freezing and defrosting and air conditioner |
| CN112484237B (en) * | 2020-11-20 | 2022-06-24 | 珠海格力电器股份有限公司 | Defrosting control method, device and equipment and air conditioner |
| CN114688683B (en) * | 2022-03-15 | 2024-05-24 | 青岛海尔空调器有限总公司 | Air conditioner and defrosting control method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1959267A (en) * | 2005-11-01 | 2007-05-09 | 乐金电子(天津)电器有限公司 | Air regulator, and operation method with case being removed |
| CN201072272Y (en) * | 2007-06-07 | 2008-06-11 | 中国人民解放军总后勤部建筑工程研究所 | Heat pump defrosting control device of cooling and heating blower |
| CN101435642A (en) * | 2008-11-26 | 2009-05-20 | 中国人民解放军总后勤部建筑工程研究所 | Current sampling defrost circuit structure of condensation fan |
| CN101660808A (en) * | 2008-08-29 | 2010-03-03 | Tcl集团股份有限公司 | Air conditioner and frost removal control method thereof |
| JP2010223494A (en) * | 2009-03-23 | 2010-10-07 | Mitsubishi Electric Corp | Air conditioner |
| CN101975422A (en) * | 2010-09-30 | 2011-02-16 | 广东美的电器股份有限公司 | Warm/cool air-conditioner and defrosting method thereof |
| JP2012078065A (en) * | 2010-10-05 | 2012-04-19 | Sharp Corp | Air conditioner |
-
2013
- 2013-09-12 CN CN201310416593.5A patent/CN104456859B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1959267A (en) * | 2005-11-01 | 2007-05-09 | 乐金电子(天津)电器有限公司 | Air regulator, and operation method with case being removed |
| CN201072272Y (en) * | 2007-06-07 | 2008-06-11 | 中国人民解放军总后勤部建筑工程研究所 | Heat pump defrosting control device of cooling and heating blower |
| CN101660808A (en) * | 2008-08-29 | 2010-03-03 | Tcl集团股份有限公司 | Air conditioner and frost removal control method thereof |
| CN101435642A (en) * | 2008-11-26 | 2009-05-20 | 中国人民解放军总后勤部建筑工程研究所 | Current sampling defrost circuit structure of condensation fan |
| JP2010223494A (en) * | 2009-03-23 | 2010-10-07 | Mitsubishi Electric Corp | Air conditioner |
| CN101975422A (en) * | 2010-09-30 | 2011-02-16 | 广东美的电器股份有限公司 | Warm/cool air-conditioner and defrosting method thereof |
| JP2012078065A (en) * | 2010-10-05 | 2012-04-19 | Sharp Corp | Air conditioner |
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