CN104654531A - Air conditioner and control method for dust removal of outdoor unit of air conditioner - Google Patents
Air conditioner and control method for dust removal of outdoor unit of air conditioner Download PDFInfo
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- CN104654531A CN104654531A CN201510104256.1A CN201510104256A CN104654531A CN 104654531 A CN104654531 A CN 104654531A CN 201510104256 A CN201510104256 A CN 201510104256A CN 104654531 A CN104654531 A CN 104654531A
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- Prior art keywords
- conditioner
- air
- dedusting
- heat exchanger
- outdoor heat
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Classifications
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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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
- F24F2110/50—Air quality properties
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention discloses a control method for dust removal of an outdoor unit of an air conditioner. The control method comprises the following steps of after the meeting of the dust removal condition is judged, entering a dust removal mode; obtaining the running modes and running parameters of the air conditioner; according to the running modes and the running parameters, after the meeting of the dust removal starting condition is judged, controlling a compressor of the air conditioner to stop, controlling the other parts, except the outer fan and the compressor, to enter a standby state, and controlling the outer fan to reversely rotate. The control method has the advantages that the dust and other attaching matters on the outer surface of the outdoor heat exchanger of the air conditioner can be reduced, and the high-efficiency running of the air conditioner is guaranteed. The invention also provides the air conditioner.
Description
Technical field
The invention belongs to technical field of electric appliances, particularly relate to a kind of control method of air conditioner external dedusting, and a kind of air-conditioner.
Background technology
The outer machine of air cooled air conditioner needs to be rotated by outer blower fan to form heat exchange air quantity, and the exchange capability of heat impact of heat exchange air quantity on outdoor heat exchanger is very large.The outer machine of air-conditioning system is generally in the poor outdoor environment of air quality; the long-term forced convertion effect of outer blower fan; long-pending full dust and other attachments on outdoor heat exchanger outer surface can be caused; affect the heat exchange efficiency of unit; the long-term Effec-tive Function of air-conditioning system cannot be ensured; even also can cause when laying dust is serious that outer machine high pressure is too high or low pressure is too low, cause disorderly closedown, cause economic loss and affect user using.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, one object of the present invention is the control method proposing a kind of air conditioner external dedusting, and this control method can reduce dust on air conditioner chamber's external heat exchanger outer surface and other attachments, ensures the Effec-tive Function of air-conditioner.
Another object of the present invention is to propose a kind of air-conditioner adopting said method.
For achieving the above object, one aspect of the present invention embodiment proposes a kind of control method of air conditioner external dedusting, and this control method comprises the following steps: enter after judging to meet dedusting condition and treat dedusting pattern; Obtain operational mode and the operational factor of air-conditioner; And according to after described operational mode and operational factor judgement satisfied startup dedusting condition, the compressor controlling described air-conditioner stops, and the miscellaneous part except controlling outside blower fan and described compressor enters holding state, and control described outer blower fan and reverse.
According to the control method of the air conditioner external dedusting of the embodiment of the present invention, entering after dedusting pattern, judge whether to meet according to the operational mode of air-conditioner and operational factor and start dedusting condition and namely select to carry out dedusting opportunity, the impact that user is normally used can be avoided as much as possible, or dust removing effects can be made more obvious, and then when meeting dedusting condition, control compressor to stop and miscellaneous part except controlling outside blower fan and compressor enters holding state, and the outer blower fan of control reverses, the air-flow contrary with when normally rotating is formed in outdoor heat exchanger, thus the dust that can reduce on outdoor heat exchanger outer surface or other attachments, and then ensure the heat exchange amount of air-conditioner heat source side, make air-conditioner more stable, Effec-tive Function.
Wherein, described judge to meet according to described operational mode and operational factor start dedusting condition and specifically comprise: when described operational mode is refrigeration mode, if described air-conditioner is in holding state, then judge to meet to start dedusting condition; And when described operational mode is refrigeration mode, if the outer machine of described air-conditioner is in running status, then judge to meet after described outer machine oil return to start dedusting condition.
Further, described judge to meet according to described operational mode and operational factor start dedusting condition and specifically comprise: when described operational mode is heating mode, if described air-conditioner is in running status, judge whether the temperature of described outdoor heat exchanger is more than or equal to predetermined threshold value; If the temperature of the outdoor heat exchanger of described air-conditioner is more than or equal to described predetermined threshold value, then judge to meet after described outer machine oil return to start dedusting condition, outdoor heat exchanger cleans up by the condensed water in outer machine, then dust removing effects is obvious; And if the temperature of the outdoor heat exchanger of described air-conditioner is less than described predetermined threshold value, then control described outer machine defrosting and judge to meet after defrosting terminates to start dedusting condition, when outer machine defrosts, outdoor heat exchanger cleans up by condensed water and after drying fin, dust removing effects is more obvious.
Particularly, start shooting first from described air-conditioner and run or record accumulated running time after the last time carries out dedusting to described outdoor heat exchanger, if described accumulated running time is more than the first Preset Time, then judge to meet dedusting condition.
In addition, after the described outer blower fan of described control reverses, said method also comprises: the described outer blower fan of described control carry out time of reversing more than the second Preset Time after, terminate dedusting.
For achieving the above object, the present invention on the other hand embodiment proposes a kind of air-conditioner, and this air-conditioner comprises: compressor; Outdoor heat exchanger and outer blower fan; Controller, described controller controls air-conditioner and enters and treat dedusting pattern after judging to meet dedusting condition, described controller obtains operational mode and the operational factor of described air-conditioner, after judge to meet startup dedusting condition according to described operational mode and operational factor, control described compressor to stop, and the miscellaneous part except controlling outside blower fan and described compressor enters holding state, and control described outer blower fan and carry out reversing to carry out dedusting to described outdoor heat exchanger.
According to the air-conditioner of the embodiment of the present invention, entering after dedusting pattern, controller judges whether to meet according to the operational mode of air-conditioner and operational factor and starts dedusting condition and namely select to carry out dedusting opportunity, the impact that user is normally used can be avoided as much as possible, or dust removing effects can be made more obvious, and then when meeting dedusting condition, control compressor to stop and miscellaneous part except controlling outside blower fan and compressor enters holding state, and the outer blower fan of control reverses, the air-flow contrary with when normally rotating is formed in outdoor heat exchanger, thus the dust that can reduce on outdoor heat exchanger outer surface or other attachments, and then ensure the heat exchange amount of air-conditioner heat source side, air-conditioner is more stable, Effec-tive Function.
Wherein, described operational mode is refrigeration mode, and described air-conditioner meets startup dedusting condition when being in holding state, and the outer machine of described air-conditioner is when being in running status, meets and start dedusting condition after described outer machine oil return.
In one embodiment of the invention, described controller also comprises temperature detector, for detecting the temperature of described outdoor heat exchanger, when described operational mode is heating mode and described air-conditioner is in running status, described controller judges whether the temperature of described outdoor heat exchanger is more than or equal to predetermined threshold value, and when the temperature of the outdoor heat exchanger of described air-conditioner is more than or equal to predetermined threshold value, meet after described outer machine oil return and start dedusting condition, outdoor heat exchanger cleans up by the condensed water in outer machine, then dust removing effects is obvious; And when the temperature of the outdoor heat exchanger of described air-conditioner is less than described predetermined threshold value, control described outer machine defrosting and judge to meet after defrosting terminates to start dedusting condition, when outer machine defrosts, outdoor heat exchanger cleans up by condensed water and after drying fin, dust removing effects is more obvious.
Further, described controller also runs for starting shooting first from described air-conditioner or record accumulated running time after the last time carries out dedusting to described outdoor heat exchanger, and meets dedusting condition in described accumulated running time more than judging during the first Preset Time.
In addition, described controller also for control described outer blower fan carry out time of reversing more than the second Preset Time after, terminate dedusting.
Accompanying drawing explanation
Fig. 1 is the flow chart of the control method of air conditioner external dedusting according to an embodiment of the invention;
Fig. 2 is the schematic diagram of air flowing in outer blower fan when normally running according to the air conditioner external of a specific embodiment of the present invention and outdoor heat exchanger;
Fig. 3 is the schematic diagram of air flowing in outer blower fan when running according to the air conditioner external dedusting of another specific embodiment of the present invention and outdoor heat exchanger;
The flow chart of the control method of outer machine dedusting when Fig. 4 is the air-conditioner running refrigerating pattern according to a specific embodiment of the present invention;
The flow chart of the control method of outer machine dedusting when Fig. 5 is air-conditioner operation heating mode according to another embodiment of the invention;
Fig. 6 is the block diagram of air-conditioner according to an embodiment of the invention; And
Fig. 7 is the block diagram of air-conditioner according to another embodiment of the invention.
Reference numeral:
Air-conditioner 100,
Compressor 10, outdoor heat exchanger 20, outdoor fan 30 and controller 40, temperature detector 50.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
Below with reference to the accompanying drawings describe the control method of the air conditioner external dedusting of the embodiment of the present invention and adopt the air-conditioner of the method.
The basic ideas of the dedusting that the air-conditioner of the embodiment of the present invention and the control method of outer machine dedusting thereof provide are: utilize the blower fan turning of air-conditioner to replace control device and outer blower fan is reversed, coordinate corresponding control logic, force the dust on removing outdoor heat exchanger outer surface and other attachments, ensure the heat exchange amount of air-conditioner heat source side, make air-conditioner can steady in a long-term, reliable and Effec-tive Function.
First the control method of the air conditioner external dedusting of the embodiment of the present invention is described.
Fig. 1 is the flow chart of the control method of air conditioner external dedusting according to an embodiment of the invention.As shown in Figure 1, this control method comprises the following steps:
S1, enters after judging to meet dedusting condition and treats dedusting pattern.
Particularly, start shooting first from air-conditioner and run or record accumulated running time after the last time carries out dedusting to outdoor heat exchanger, if accumulated running time is more than the first Preset Time, then judge to meet dedusting condition.Such as, run from outer machine first time and carry out bulk registration running time, when accumulated running time, T met T >=Ta, then the outer machine of control enters and treats dedusting pattern, and wherein, Ta i.e. the first Preset Time, it is here the dedusting cycle of setting, specifically can arrange according to the actual installation environment of outer machine, such as, the first Preset Time can be set to 168 hours.
S2, obtains operational mode and the operational factor of air-conditioner.
S3, after judging to meet start dedusting condition according to operational mode and operational factor, the compressor controlling air-conditioner stops, and the miscellaneous part except controlling outside blower fan and compressor enters holding state, and controls outer blower fan and reverse.
Particularly, outer machine, when until dedusting pattern, can select dedusting opportunity according to the operational mode of air-conditioner and operational factor such as outdoor environment temperature.Such as, in order to reduce the impact of dedusting action on indoor user side as much as possible, can select in the refrigeration of the unit treating air-conditioner in dedusting mode time or the demand that heats is zero, namely judge to meet to start dedusting condition, or the outer machine of air-conditioner is in defrost or oil return state, then namely judge to meet after defrost or oil return to start dedusting condition, just give dedusting action.Select dedusting opportunity, the impact normally used user to be avoided as much as possible, or dust removing effects can be made more obvious according to operational mode and operational factor.
Air-conditioner is accumulative runs certain hour, and after meeting startup dedusting condition, external machine carries out dedusting action, during dedusting, the control logic of each parts of air-conditioner is: control compressor and stop, and the miscellaneous part controlled outside blower fan and compressor except for the outer enters holding state, control outer blower fan contrary with the direction rotated under normal circumstances, and then the back draught with certain blast can be produced, and guide the outdoor heat exchanger of the external machine of air-flow to carry out reverse dedusting, remove the attachment of outdoor heat exchanger outer surface.
Such as, the top air-out form of machine is that example is described in addition, is understandable that, for actual product, top air-out, side air-out and tiltedly other the air-out form such as air-out can adopt the control method of the embodiment of the present invention.Fig. 2 is the schematic diagram that a kind of top air-out form unit normally runs the air flowing of outdoor heat exchanger, and as shown in Figure 2, wherein, 1 is expressed as air-flow, and 2 are denoted as outdoor heat exchanger, and 3 are expressed as outer blower fan.When the unit of air-conditioner normally runs, the air interior flowing of heat exchanger outdoor is also expelled to outdoor by outer blower fan.Fig. 3 is the schematic diagram that air-conditioner carries out outdoor air flows when dedusting runs, as shown in Figure 3, when dedusting runs, the direction of rotation of blower fan is contrary with direction when normally running, then air is formed and opposite flow when normally running in outdoor heat exchanger, now the miscellaneous part of air-conditioner is all in holding state, thus reach the object of outdoor heat exchanger being carried out to dedusting, the dust on outdoor heat exchanger outer surface and other attachments can be reduced, ensure the heat exchange amount of air-conditioner heat source side, make air-conditioner can Effec-tive Function.
It should be noted that, when freezing oil return, cross valve is without the need to switching (being in OFF off-position), when heating oil return, cross valve need be switched to the OFF state of refrigeration mode by the ON of heating condition (powering on) state, now, air-conditioning system is in kind of refrigeration cycle, in outdoor heat exchanger, refrigerant temperature is in the condition of high temperature, can by the frost at heat exchanger surface that produces in heating operations or condensate evaporation, heat exchanger surface only remains dry dust, rear fan reversing can effectively blow off adhering to dust on heat exchangers, otherwise, the mixture of water and dust is difficult to be fallen by wind.
Detailed process is: if there are condensed water or frost (heating operations) in 1 outdoor heat exchanger surface, need first to be evaporated with high temperature refrigerant by kind of refrigeration cycle, then blows outside heat exchanger surface dust off by blower fan antiport; If 2 outdoor heat exchangers surface evaporated condensation water (process of refrigerastion), then only need heat exchanger surface dust to be removed by the running of blower fan direction.
Be described according to the control method of the different operational mode of air-conditioner and the external machine dedusting of operational factor further below.
First be described dust removal process during air-conditioner running refrigerating pattern, Fig. 4 is the flow chart of the control method of air conditioner external dedusting according to an embodiment of the invention.As shown in Figure 4, when air-conditioner running refrigerating pattern, the control method of air conditioner external dedusting comprises:
S10, the accumulated running time of outer machine reaches the first Preset Time.
Such as, when air-conditioner start shooting first run or reach Ta value apart from the accumulated running time after last dedusting.
S20, enters and treats dedusting pattern, judges the operational mode residing for air-conditioner.
And according to the operational mode of air-conditioner, enter step S30, S40 and S50 respectively.
S30, air-conditioner is in holding state, directly enters dedusting pattern.
When operational mode is refrigeration mode, if air-conditioner is in holding state, then judges to meet to start dedusting condition, can directly enter dedusting pattern, namely perform step S60.
S40, air conditioner external is in running status, then enter dedusting pattern after treating its oil return.
When operational mode is refrigeration mode, after air-conditioner enters and treats dedusting pattern, if the outer machine of air-conditioner is in running status, judge to meet after outer machine oil return to start dedusting condition, namely now off-premises station surface dirt can be blown away, enter dedusting pattern after then treating its oil return, namely enter step S60.
S50, air-conditioner breaks down, then wait for trouble shooting.
S60, control outer blower fan and reversely rotate, compressor stops, and keeps miscellaneous part to be in holding state.
Namely after entering dedusting pattern, control outer blower motor and drive fan blade inverted running, formed in outdoor heat exchanger and opposite flow when normally running, and control miscellaneous part and be in holding state, the attachment on outdoor heat exchanger surface comes off under the effect of back draught, thus reaches the object to outdoor heat exchanger dedusting.
S70, after the dedusting time exceedes setting-up time, dedusting terminates.
Such as, control outer blower fan carry out time of reversing more than the second Preset Time after, end dedusting.Wherein, second Preset Time and dedusting time can set as the case may be, such as can set dedusting time T=3 minute, after dedusting terminates, counter re-starts timing, and then after new accumulated running time reaches Ta, control air-conditioner and enter dedusting pattern, namely carry out periodicity unit automatic dust removing.
When running heating mode to air-conditioner below, air conditioner external dust removal process is described.Fig. 5 is the flow chart of the control method of air conditioner external dedusting according to another embodiment of the invention, and as shown in Figure 5, this control method comprises the following steps:
S100, outer machine accumulated running time reaches the first Preset Time.
Such as, when air-conditioner start shooting first run or reach Ta value apart from the accumulated running time after last dedusting.
S200, enters and treats dedusting pattern, judges whether air-conditioner is in normal operating condition.
If air-conditioner is in normal operating condition, then enter step S400, otherwise enter step S300.
S300, waits for that air-conditioner start runs, and after air-conditioner start, returns S200.
Namely treating within dedusting mode time, when air-conditioner is in holding state, then after waiting air-conditioner start operation, then dedusting action is carried out according to mode during normal operating condition.
S400, judges whether the temperature of outdoor heat exchanger is more than or equal to predetermined threshold value.
Such as, judge whether the liquid pipe temperature of outdoor heat exchanger is more than or equal to 0 DEG C, if the temperature of the outdoor heat exchanger of air-conditioner is more than or equal to predetermined threshold value, then enters step S500, if the temperature of the outdoor heat exchanger of air-conditioner is less than predetermined threshold value, then enter step S600.
S500, air-conditioner reaches the oil return time, carries out oil return.
Such as, when judging that the liquid pipe temperature of outdoor heat exchanger is more than or equal to 0 DEG C, air-conditioner reaches the oil return time, control cross valve to switch, carry out oil return control, judge to meet startup dedusting condition after outer machine oil return, then enter dedusting pattern, namely enter step S700.When air-conditioner carries out oil return, outdoor heat exchanger cleans up by the condensed water in outer machine, then dust removing effects is obvious.
S600, air-conditioner reaches defrosting condition, carries out defrost control.
Such as, when judging that the liquid pipe temperature of outdoor heat exchanger is less than 0 DEG C, air-conditioner meets defrosting condition, control cross valve to switch, control air-conditioner running refrigerating pattern to defrost to make outer machine, fall by the frost on off-premises station surface and condensate evaporation, and judge to meet after defrosting terminates to start dedusting condition, namely now the dust on off-premises station surface is drier, can be blown away, then enter dedusting pattern, namely step S700 is performed, wherein, when machine defrosts outside, outdoor heat exchanger cleans up and after drying fin by condensed water, dust removing effects is more obvious.
S700, control outer blower fan and reversely rotate, compressor stops, and keeps miscellaneous part to be in holding state, and cross valve keeps state when oil return or defrosting.
Air-conditioner, after defrosting or oil return terminate, enters dedusting pattern, and the fan blade controlling the outer blower fan of driven by motor reversely rotates, and form the air-flow contrary with when normally running, miscellaneous part is in holding state.And after the time that the outer blower fan of control reverses was more than the second Preset Time such as 3 minutes, dedusting release, enters step S800.
S800, air-conditioner enters normal operating condition.
After dedusting release, counter O reset, and timing is carried out to the accumulated running time of the air-conditioner of dedusting next time.
In sum, the control method of the air conditioner external dedusting of the embodiment of the present invention, entering after dedusting pattern, judge whether to meet according to the operational mode of air-conditioner and operational factor and start dedusting condition and namely select to carry out dedusting opportunity, the impact that user is normally used can be avoided as much as possible, or dust removing effects can be made more obvious, and then when meeting dedusting condition, control compressor to stop and miscellaneous part except controlling outside blower fan and compressor enters holding state, and the outer blower fan of control reverses, the air-flow contrary with when normally rotating is formed in outdoor heat exchanger, thus the dust that can reduce on outdoor heat exchanger outer surface or other attachments, and then ensure the heat exchange amount of air-conditioner heat source side, make air-conditioner more stable, Effec-tive Function.
In addition, when air-conditioner runs heating mode, if be in normal operating condition, after oil return or defrosting terminate, carry out dedusting action, dust removing effects is more obvious.
For realizing above-described embodiment, the present invention proposes a kind of air-conditioner on the other hand.
Fig. 6 is the block diagram of air-conditioner according to an embodiment of the invention, and as shown in Figure 6, this air-conditioner 100 comprises compressor 10, outdoor heat exchanger 20, outer blower fan 30 and controller 40.
Controller 40 controls air-conditioner 100 after judging to meet dedusting condition and enters and treat dedusting pattern, particularly, start shooting first from air-conditioner 100 and run or record accumulated running time after the last time carries out dedusting to outdoor heat exchanger 20, if accumulated running time is more than the first Preset Time, then controller 40 judges to meet dedusting condition.Such as, run from outer machine first time and carry out bulk registration running time, when accumulated running time, T met T >=Ta, then controller 40 controls outer machine and enters and treat dedusting pattern, and wherein, Ta i.e. the first Preset Time, it is here the dedusting cycle of setting, specifically can arrange according to the actual installation environment of outer machine, such as, the first Preset Time can be set to 168 hours.
Treating in the dedusting time, controller 40 obtains operational mode and the operational factor of air-conditioner 100, after judge to meet startup dedusting condition according to operational mode and operational factor, control compressor 10 to stop, and the miscellaneous part except controlling outside blower fan 30 and compressor 10 enters holding state, and control outer blower fan 30 and carry out reversing to carry out dedusting to outdoor heat exchanger 20.
Particularly, outer machine is when until dedusting pattern, and controller 40 can select dedusting opportunity according to the operational mode of air-conditioner 100 and operational factor such as outdoor environment temperature.Such as, in order to reduce the impact of dedusting action on indoor user side as much as possible, can select in the refrigeration of the unit treating air-conditioner 100 in dedusting mode time or the demand that heats is zero, namely judge to meet to start dedusting condition, or the outer machine of air-conditioner 100 is in defrost or oil return state, then namely judge to meet after defrost or oil return to start dedusting condition, just give dedusting action.Controller 40 is selected dedusting opportunity, to avoid the impact normally used user as much as possible, or dust removing effects can be made more obvious according to operational mode and operational factor.
Air-conditioner 100 is accumulative runs certain hour, and after meeting startup dedusting condition, controller 40 controls outer machine and carries out dedusting action, during dedusting, the control logic of each parts of air-conditioner 100 is: control compressor 10 and stop, and the miscellaneous part controlled outside blower fan 30 and compressor 10 except for the outer enters holding state, control outer blower fan 30 contrary with the direction rotated under normal circumstances, and then the back draught with certain blast can be produced, and guide the outdoor heat exchanger 20 of the external machine of air-flow to carry out reverse dedusting, remove dust and other attachments of outdoor heat exchanger outer surface.
Be described in detail according to the process of the different operational mode of air-conditioner 100 and the external machine dedusting of operational factor below.
First dust removal process during air-conditioner 100 running refrigerating pattern is described.When operational mode is refrigeration mode, controller 40 judges that air-conditioner 100 is in holding state and meets startup dedusting condition, and when the outer machine of air-conditioner 100 is in running status, meets and start dedusting condition after judging machine oil return outside.After satisfied startup dedusting condition, controller 40 controls the driven by motor fan blade inverted running of outer blower fan 30, formed in outdoor heat exchanger 20 and opposite flow when normally running, and control miscellaneous part and be in holding state, the attachment on outdoor heat exchanger 20 surface comes off under the effect of back draught, thus reaches the object to outdoor heat exchanger 20 dedusting.
In addition, as shown in Figure 7, air-conditioner 100 also comprises temperature detector 50, for the temperature of sensing chamber's external heat exchanger 20, when operational mode is heating mode and air-conditioner 100 is in running status, and then controller 40 judges whether the temperature of outdoor heat exchanger 20 is more than or equal to predetermined threshold value such as 0 DEG C, and when the temperature of outdoor heat exchanger 20 is more than or equal to predetermined threshold value, meet after judging outer machine oil return and start dedusting condition, and when the temperature of the outdoor heat exchanger 20 of air-conditioner 100 is less than predetermined threshold value, control the defrosting of outer machine and judge to meet after defrosting terminates to start dedusting condition.Namely controller 40 controls outer machine after defrosting or oil return terminate, and enters dedusting pattern, and the fan blade controlling the outer blower fan 30 of driven by motor reversely rotates, and form the air-flow contrary with when normally running, miscellaneous part is in holding state.
And then, controller 40 control outer blower fan 30 carry out time of reversing more than the second Preset Time after terminate dedusting.Wherein, second Preset Time and dedusting time can set as the case may be, such as can set dedusting time T=3 minute, after dedusting terminates, counter re-starts timing, and then after new accumulated running time reaches Ta, control air-conditioner 100 and enter dedusting pattern, namely carry out periodicity unit automatic dust removing.
The air-conditioner of the embodiment of the present invention, entering after dedusting pattern, controller judges whether to meet according to the operational mode of air-conditioner and operational factor and starts dedusting condition and namely select to carry out dedusting opportunity, the impact that user is normally used can be avoided as much as possible, or dust removing effects can be made more obvious, and then when meeting dedusting condition, control compressor to stop and miscellaneous part except controlling outside blower fan and compressor enters holding state, and the outer blower fan of control reverses, the air-flow contrary with when normally rotating is formed in outdoor heat exchanger, thus the dust that can reduce on outdoor heat exchanger outer surface or other attachments, and then ensure the heat exchange amount of air-conditioner heat source side, air-conditioner is more stable, Effec-tive Function.
In addition, when air-conditioner runs heating mode, if be in normal operating condition, after oil return or defrosting terminate, carry out dedusting action, dust removing effects is more obvious.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this description or example and different embodiment or example can carry out combining and combining by those skilled in the art.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In describing the invention, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
Describe and can be understood in flow chart or in this any process otherwise described or method, represent and comprise one or more for realizing the module of the code of the executable instruction of the step of specific logical function or process, fragment or part, and the scope of the preferred embodiment of the present invention comprises other realization, wherein can not according to order that is shown or that discuss, comprise according to involved function by the mode while of basic or by contrary order, carry out n-back test, this should understand by embodiments of the invention person of ordinary skill in the field.
In flow charts represent or in this logic otherwise described and/or step, such as, the sequencing list of the executable instruction for realizing logic function can be considered to, may be embodied in any computer-readable medium, for instruction execution system, device or equipment (as computer based system, comprise the system of processor or other can from instruction execution system, device or equipment instruction fetch and perform the system of instruction) use, or to use in conjunction with these instruction execution systems, device or equipment.With regard to this description, " computer-readable medium " can be anyly can to comprise, store, communicate, propagate or transmission procedure for instruction execution system, device or equipment or the device that uses in conjunction with these instruction execution systems, device or equipment.The example more specifically (non-exhaustive list) of computer-readable medium comprises following: the electrical connection section (electronic installation) with one or more wiring, portable computer diskette box (magnetic device), random access memory (RAM), read-only storage (ROM), erasablely edit read-only storage (EPROM or flash memory), fiber device, and portable optic disk read-only storage (CDROM).In addition, computer-readable medium can be even paper or other suitable media that can print described program thereon, because can such as by carrying out optical scanner to paper or other media, then carry out editing, decipher or carry out process with other suitable methods if desired and electronically obtain described program, be then stored in computer storage.
Should be appreciated that each several part of the present invention can realize with hardware, software, firmware or their combination.In the above-described embodiment, multiple step or method can with to store in memory and the software performed by suitable instruction execution system or firmware realize.Such as, if realized with hardware, the same in another embodiment, can realize by any one in following technology well known in the art or their combination: the discrete logic with the logic gates for realizing logic function to data-signal, there is the special IC of suitable combinational logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA) etc.
Those skilled in the art are appreciated that realizing all or part of step that above-described embodiment method carries is that the hardware that can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, this program perform time, step comprising embodiment of the method one or a combination set of.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, also can be that the independent physics of unit exists, also can be integrated in a module by two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, and the form of software function module also can be adopted to realize.If described integrated module using the form of software function module realize and as independently production marketing or use time, also can be stored in a computer read/write memory medium.
The above-mentioned storage medium mentioned can be read-only storage, disk or CD etc.Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (10)
1. a control method for air conditioner external dedusting, is characterized in that, comprises the following steps:
Enter after judging to meet dedusting condition and treat dedusting pattern;
Obtain operational mode and the operational factor of air-conditioner; And
After judging to meet start dedusting condition according to described operational mode and operational factor, the compressor controlling described air-conditioner stops, and the miscellaneous part except controlling outside blower fan and described compressor enters holding state, and controls described outer blower fan and reverse.
2. the control method of air conditioner external dedusting as claimed in claim 1, is characterized in that, described judge to meet according to described operational mode and operational factor start dedusting condition and specifically comprise:
When described operational mode is refrigeration mode, if described air-conditioner is in holding state, then judge to meet to start dedusting condition; And
When described operational mode is refrigeration mode, if the outer machine of described air-conditioner is in running status, then judge to meet after described outer machine oil return to start dedusting condition.
3. the control method of air conditioner external dedusting as claimed in claim 1, is characterized in that, described judge to meet according to described operational mode and operational factor start dedusting condition and specifically comprise:
When described operational mode is heating mode, if described air-conditioner is in running status, judge whether the temperature of described outdoor heat exchanger is more than or equal to predetermined threshold value;
If the temperature of the outdoor heat exchanger of described air-conditioner is more than or equal to described predetermined threshold value, then judge to meet after described outer machine oil return to start dedusting condition; And
If the temperature of the outdoor heat exchanger of described air-conditioner is less than described predetermined threshold value, then controls described outer machine defrosting and judge to meet after defrosting terminates to start dedusting condition.
4. the control method of air conditioner external dedusting as claimed in claim 1, it is characterized in that, start shooting first from described air-conditioner and run or record accumulated running time after the last time carries out dedusting to described outdoor heat exchanger, if described accumulated running time is more than the first Preset Time, then judge to meet dedusting condition.
5. the control method of air conditioner external dedusting as claimed in claim 1, is characterized in that, after the described outer blower fan of described control reverses, also comprise:
The described outer blower fan of described control carry out time of reversing more than the second Preset Time after, terminate dedusting.
6. an air-conditioner, is characterized in that, comprising:
Compressor;
Outdoor heat exchanger and outer blower fan;
Controller, described controller controls air-conditioner and enters and treat dedusting pattern after judging to meet dedusting condition, described controller obtains operational mode and the operational factor of described air-conditioner, after judge to meet startup dedusting condition according to described operational mode and operational factor, control described compressor to stop, and the miscellaneous part except controlling outside blower fan and described compressor enters holding state, and control described outer blower fan and carry out reversing to carry out dedusting to described outdoor heat exchanger.
7. air-conditioner as claimed in claim 6, it is characterized in that, described operational mode is refrigeration mode, and described air-conditioner meets startup dedusting condition when being in holding state, and the outer machine of described air-conditioner is when being in running status, meets after described outer machine oil return and starting dedusting condition.
8. air-conditioner as claimed in claim 6, it is characterized in that, described air-conditioner also comprises:
Temperature detector, for detecting the temperature of described outdoor heat exchanger, when described operational mode is heating mode and described air-conditioner is in running status, described controller judges whether the temperature of described outdoor heat exchanger is more than or equal to predetermined threshold value, and when the temperature of the outdoor heat exchanger of described air-conditioner is more than or equal to predetermined threshold value, meet after described outer machine oil return and start dedusting condition, and when the temperature of the outdoor heat exchanger of described air-conditioner is less than described predetermined threshold value, control described outer machine defrosting and judge to meet after defrosting terminates to start dedusting condition.
9. air-conditioner as claimed in claim 6, it is characterized in that, described controller also runs for starting shooting first from described air-conditioner or record accumulated running time after the last time carries out dedusting to described outdoor heat exchanger, and meets dedusting condition in described accumulated running time more than judging during the first Preset Time.
10. controller as claimed in claim 6, is characterized in that, described controller also for control time that described outer blower fan carries out reversing more than the second Preset Time after, terminate dedusting.
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| CN105202695A (en) * | 2015-09-07 | 2015-12-30 | Tcl空调器(中山)有限公司 | Dust removal control method and device for heat exchanger of outdoor unit of air conditioner |
| CN106765876A (en) * | 2016-11-24 | 2017-05-31 | 广东美的制冷设备有限公司 | Automated cleaning air-conditioner outdoor unit control method and device, air-conditioner |
| CN106871390A (en) * | 2017-04-24 | 2017-06-20 | 广东美的暖通设备有限公司 | Dedusting control method, dedusting control device and air-conditioner |
| CN107246701A (en) * | 2016-09-13 | 2017-10-13 | 奥克斯空调股份有限公司 | A kind of air conditioner chamber's external heat exchanger defrosting or snow removing control method |
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| CN110219817A (en) * | 2019-06-13 | 2019-09-10 | 珠海格力电器股份有限公司 | Dust removal method, device, air-conditioning system and the storage medium for controlling blower dedusting |
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| CN110567118A (en) * | 2019-09-03 | 2019-12-13 | 珠海格力电器股份有限公司 | Automatic dust removal method and device for unit and unit |
| CN110836441A (en) * | 2018-08-17 | 2020-02-25 | 青岛海尔空调器有限总公司 | Defrosting control method for air conditioner |
| CN112283863A (en) * | 2020-09-21 | 2021-01-29 | 珠海格力电器股份有限公司 | Self-cleaning control method and device for air conditioner external unit, storage medium and air conditioner |
| CN112361532A (en) * | 2020-09-10 | 2021-02-12 | 江苏友奥电器有限公司 | Dust removal method and device for outdoor unit of household air conditioner |
| CN112856741A (en) * | 2019-11-28 | 2021-05-28 | 广东美的制冷设备有限公司 | Air conditioner deodorization method, equipment and computer readable storage medium |
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| CN105202695A (en) * | 2015-09-07 | 2015-12-30 | Tcl空调器(中山)有限公司 | Dust removal control method and device for heat exchanger of outdoor unit of air conditioner |
| CN107246701A (en) * | 2016-09-13 | 2017-10-13 | 奥克斯空调股份有限公司 | A kind of air conditioner chamber's external heat exchanger defrosting or snow removing control method |
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| CN106871390A (en) * | 2017-04-24 | 2017-06-20 | 广东美的暖通设备有限公司 | Dedusting control method, dedusting control device and air-conditioner |
| CN106871390B (en) * | 2017-04-24 | 2020-04-07 | 广东美的暖通设备有限公司 | Dust removal control method, dust removal control device and air conditioner |
| CN109237733A (en) * | 2017-07-04 | 2019-01-18 | 奥克斯空调股份有限公司 | Outdoor machine of air-conditioner automatic block-resistant method |
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| CN110469940A (en) * | 2019-07-17 | 2019-11-19 | 青岛海尔空调器有限总公司 | Automatically cleaning control method for air conditioner |
| CN110469941B (en) * | 2019-07-17 | 2021-09-21 | 青岛海尔空调器有限总公司 | Self-cleaning control method for air conditioner |
| CN110454906A (en) * | 2019-08-05 | 2019-11-15 | 广东美的制冷设备有限公司 | Dust removal method, device, air conditioner and the electronic equipment of air conditioner |
| CN110567118A (en) * | 2019-09-03 | 2019-12-13 | 珠海格力电器股份有限公司 | Automatic dust removal method and device for unit and unit |
| CN110567118B (en) * | 2019-09-03 | 2021-02-26 | 珠海格力电器股份有限公司 | Automatic dust removal method and device for unit and unit |
| CN112856741A (en) * | 2019-11-28 | 2021-05-28 | 广东美的制冷设备有限公司 | Air conditioner deodorization method, equipment and computer readable storage medium |
| CN112856741B (en) * | 2019-11-28 | 2022-09-27 | 广东美的制冷设备有限公司 | Air conditioner deodorization method, equipment and computer readable storage medium |
| CN112361532A (en) * | 2020-09-10 | 2021-02-12 | 江苏友奥电器有限公司 | Dust removal method and device for outdoor unit of household air conditioner |
| CN112283863A (en) * | 2020-09-21 | 2021-01-29 | 珠海格力电器股份有限公司 | Self-cleaning control method and device for air conditioner external unit, storage medium and air conditioner |
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