CN104729016A - Dust removal method and device applied to air conditioner outdoor heat exchanger - Google Patents
Dust removal method and device applied to air conditioner outdoor heat exchanger Download PDFInfo
- Publication number
- CN104729016A CN104729016A CN201510113000.7A CN201510113000A CN104729016A CN 104729016 A CN104729016 A CN 104729016A CN 201510113000 A CN201510113000 A CN 201510113000A CN 104729016 A CN104729016 A CN 104729016A
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- China
- Prior art keywords
- heat exchanger
- outdoor heat
- dust removal
- described motor
- removal process
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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
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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
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G13/00—Appliances or processes not covered by groups F28G1/00 - F28G11/00; Combinations of appliances or processes covered by groups F28G1/00 - F28G11/00
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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
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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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 provides a dust removal method and device applied to an air conditioner outdoor heat exchanger. An outdoor unit of an air conditioner comprises the outdoor heat exchanger and an air duct system composed of a motor and vanes. The dust removal method includes the following steps that whether dust removal processing needs to be carried out on the outdoor heat exchanger is judged; when it is judged that the outdoor heat exchanger needs dust removal processing, at least the motor is controlled to rotate reversely, and when the outdoor unit works normally, the motor rotates forwards. By means of the technical scheme, the effect that the air conditioner automatically carries out dust removal on the outdoor heat exchanger is realized, a higher heat exchange efficiency of a condenser is guaranteed, and the complex operation of detaching the outdoor unit when the condenser is cleaned manually is avoided.
Description
Technical field
The present invention relates to air-conditioner technical field, in particular to a kind of dust collection method for air conditioner chamber's external heat exchanger and a kind of dust arrester for air conditioner chamber's external heat exchanger.
Background technology
The off-premises station of air cooling air conditioner is generally made up of refrigeration system, ducting system and power supply circuit board controller dispatch control system, and refrigeration system is primarily of compositions such as condenser, pipeline component, compressor and valve members, and ducting system is made up of motor, fan blade, guard etc.Wherein, the exchange heat of condenser is that the air relying on blower fan to provide flows through condenser and completes, condenser is generally made up of copper pipe and the radiating fin being attached to copper pipe surface, the effect of radiating fin increases heat exchange area, improve heat exchange efficiency, due to the spacing of heat exchanger fin all smaller (be generally grade other), and the off-premises station of air-conditioner is generally arranged on outdoor, therefore when the fin of post-condenser running a period of time being attached with the dust and other impurities in surrounding environment.These dust and other impurities are all generally the non-conductors of heat, and can affect the heat transfer effect of condenser, dust and other impurities also blocks air can flow through condenser surface in addition, reduces heat transfer effect, affects the experience of user's using air-condition device.Meanwhile, if the dust on manual cleaning condenser, then need to take off-premises station apart, operating process is loaded down with trivial details.
Therefore, how can realize air-conditioner and automatically dedusting be carried out to condenser, guarantee the heat exchange efficiency that condensation utensil is higher, avoid the technical problem needing the troublesome operation of taking off-premises station apart to become urgently to be resolved hurrily during manual cleaning condenser simultaneously.
Summary of the invention
The present invention is intended at least to solve one of technical problem existed in prior art or correlation technique.
For this reason, one object of the present invention is to propose a kind of dust-cleaning scheme for air conditioner chamber's external heat exchanger newly, achieve air-conditioner carries out dedusting automatically effect to outdoor heat exchanger, be conducive to the heat exchange efficiency guaranteeing that condensation utensil is higher, when it also avoid manual cleaning condenser, need the troublesome operation of taking off-premises station apart simultaneously.
For achieving the above object, embodiment according to a first aspect of the invention, propose a kind of dust collection method for air conditioner chamber's external heat exchanger, the off-premises station of described air-conditioner comprises described outdoor heat exchanger, and the ducting system to be made up of motor and fan blade, described dust collection method, comprising: judge whether that needs carry out dust removal process to described outdoor heat exchanger; When judging to need to carry out dust removal process to described outdoor heat exchanger, at least control the reversion of described motor, wherein, when described off-premises station normally works, described motor rotates forward.
According to an embodiment of the invention for the dust collection method of air conditioner chamber's external heat exchanger, by when determining to need to carry out dust removal process to outdoor heat exchanger (condenser), control motor reverses, make motor that fan blade can be driven to produce contrary reverse distinguished and admirable in direction when normally working with off-premises station, thus the dust that can effectively remove on outdoor heat exchanger, achieve air-conditioner carries out dedusting automatically effect to outdoor heat exchanger, be conducive to the heat exchange efficiency guaranteeing that condensation utensil is higher, need the troublesome operation of taking off-premises station apart when it also avoid manual cleaning condenser simultaneously.
Wherein, judge whether that the scheme needing to carry out outdoor heat exchanger dust removal process can comprise:
Scheme one:
According to one embodiment of present invention, judge whether that the step needing to carry out described outdoor heat exchanger dust removal process specifically comprises: detect blast when described motor rotates forward in real time by the wind pressure sensor be arranged on described outdoor heat exchanger, and/or detect wind speed when described motor rotates forward in real time by the air velocity transducer be arranged on described outdoor heat exchanger; If blast when described motor rotates forward is more than or equal to predetermined blast, and/or wind speed when described motor rotates forward is less than or equal to predetermined wind speed, then judging needs to carry out dust removal process to described outdoor heat exchanger.
According to an embodiment of the invention for the dust collection method of air conditioner chamber's external heat exchanger, due to the dust on outdoor heat exchanger more time, ducting system in off-premises station is not smooth, cause blast comparatively large and wind speed is less, therefore can determine whether to need to carry out dust removal process to outdoor heat exchanger according to the wind pressure sensor be arranged on outdoor heat exchanger and/or air velocity transducer.
Scheme two:
According to one embodiment of present invention, judge whether that the step needing to carry out described outdoor heat exchanger dust removal process specifically comprises: judge whether current time reaches the dedusting time of setting, if so, then judge to need to carry out dust removal process to described outdoor heat exchanger.The program is timing dusting scheme.
Scheme three:
According to one embodiment of present invention, judge whether that the step needing to carry out described outdoor heat exchanger dust removal process specifically comprises: when described motor rotates forward, detect the running current of described motor in real time; If the running current of described motor is more than or equal to predetermined current value, then judge to need to carry out dust removal process to described outdoor heat exchanger.Particularly, the dust on outdoor heat exchanger is more, and the load of motor can be larger, and running current is also larger, therefore can determine whether to need to carry out dust removal process to outdoor heat exchanger by the running current detecting motor.
According to one embodiment of present invention, when judging to need to carry out dust removal process to described outdoor heat exchanger, also comprise: according to the proportionate relationship between described running current and described predetermined current value, determine the dirty stifled state of described outdoor heat exchanger, and according to the dirty stifled state of described outdoor heat exchanger, at least control the reversion of described motor.
According to an embodiment of the invention for the dust collection method of air conditioner chamber's external heat exchanger, if the running current of motor is larger, then illustrate that the dirty stifled state of outdoor heat exchanger is more serious, therefore motor reversion can be controlled according to different dirty stifled states, to guarantee to realize optimum dust removing effects.
According to one embodiment of present invention, at least control the reversion of described motor to comprise:
Only control the reversion of described motor; Or
After the described motor of control rotates forward scheduled duration, control the reversion of described motor; Or
Periodically control after described motor rotates forward the first scheduled duration successively, control described motor and to reverse the second scheduled duration; Or
After described air-conditioner performs defrosting operation, control the reversion of described motor.
In this embodiment, if the dirty stifled state of outdoor heat exchanger is not serious, then only can control motor reversion; Due to the blower fan of air-conditioner may fall to having foreign material, therefore in order to avoid foreign material being sucked air-conditioner inside when motor reverses, therefore motor reversion can be controlled again after control motor rotates forward scheduled duration; When the dirty stifled state of outdoor heat exchanger is more serious, periodically can control electronic rotating and reverse successively, to realize more powerful dust removing effects; In addition, if air-conditioner performs defrosting operation, then the frost on outdoor heat exchanger is melted into water, now can control the cleaning process of motor reversion realization to outdoor heat exchanger.Wherein, the recovery that whether can be commutated by the cross valve judging in air-conditioner determines whether air-conditioner performs defrosting operation, particularly, if cross valve commutation recovers, then determines that air-conditioner completes defrosting operation.
According to one embodiment of present invention, before judging whether to need that the step of dust removal process is carried out to described outdoor heat exchanger, also comprise: judge whether the indoor set of described air-conditioner has the ability demand, and/or judge the whether frosting of described outdoor heat exchanger; If judge, described indoor set does not have ability need, and/or judges the non-frosting of described outdoor heat exchanger, then perform the step judging whether to need described outdoor heat exchanger to be carried out to dust removal process.
According to an embodiment of the invention for the dust collection method of air conditioner chamber's external heat exchanger, the demand if indoor set is had the ability, motor is then needed to rotate forward, therefore by not having just to judge whether during ability need to need to carry out dust removal process to outdoor heat exchanger at judgement indoor set, making it possible to avoid still to control when indoor set has the ability demand motor and reversing and the normal operation that affects air-conditioner.Simultaneously, due to outdoor heat exchanger when frosting to the wind speed in the running current of motor, ducting system and influenced by wind pressure larger, therefore pass through just to judge whether to need to carry out dust removal process to outdoor heat exchanger when the non-frosting of judgement outdoor unit heat exchanger, make it possible to avoid the wind speed in the running current when outdoor heat-transmission device frosting still according to motor, ducting system or blast judge whether to need to carry out dust removal process to outdoor heat exchanger and cause judged result inaccurate.
Embodiment according to a second aspect of the present invention, also proposed a kind of dust arrester for air conditioner chamber's external heat exchanger, the off-premises station of described air-conditioner comprises described outdoor heat exchanger, and the ducting system to be made up of motor and fan blade, described dust arrester, comprising: judging unit, needing to carry out dust removal process to described outdoor heat exchanger for judging whether; Control unit, during for judging at described judging unit to need to carry out dust removal process to described outdoor heat exchanger, at least control the reversion of described motor, wherein, when described off-premises station normally works, described motor rotates forward.
According to an embodiment of the invention for the dust arrester of air conditioner chamber's external heat exchanger, by when determining to need to carry out dust removal process to outdoor heat exchanger (condenser), control motor reverses, make motor that fan blade can be driven to produce contrary reverse distinguished and admirable in direction when normally working with off-premises station, thus the dust that can effectively remove on outdoor heat exchanger, achieve air-conditioner carries out dedusting automatically effect to outdoor heat exchanger, be conducive to the heat exchange efficiency guaranteeing that condensation utensil is higher, need the troublesome operation of taking off-premises station apart when it also avoid manual cleaning condenser simultaneously.
Wherein, judge whether that the scheme needing to carry out outdoor heat exchanger dust removal process can comprise:
Scheme one:
According to one embodiment of present invention, described judging unit comprises: the first detecting unit, for being detected blast when described motor rotates forward in real time by the wind pressure sensor be arranged on described outdoor heat exchanger, and/or detect wind speed when described motor rotates forward in real time by the air velocity transducer be arranged on described outdoor heat exchanger; First identifying unit, when being more than or equal to predetermined blast for the blast when described motor rotates forward, and/or when the wind speed when described motor rotates forward is less than or equal to predetermined wind speed, judges to need to carry out dust removal process to described outdoor heat exchanger.
According to an embodiment of the invention for the dust arrester of air conditioner chamber's external heat exchanger, due to the dust on outdoor heat exchanger more time, ducting system in off-premises station is not smooth, cause blast comparatively large and wind speed is less, therefore can determine whether to need to carry out dust removal process to outdoor heat exchanger according to the wind pressure sensor be arranged on outdoor heat exchanger and/or air velocity transducer.
Scheme two:
According to one embodiment of present invention, described judging unit comprises: the second identifying unit, for reach setting in current time the dedusting time time, judge need dust removal process is carried out to described outdoor heat exchanger.The program is timing dusting scheme.
Scheme three:
According to one embodiment of present invention, described judging unit comprises: the second detecting unit, for when described motor rotates forward, detects the running current of described motor in real time; 3rd identifying unit, for when the running current of described motor is more than or equal to predetermined current value, judges to need to carry out dust removal process to described outdoor heat exchanger.Particularly, the dust on outdoor heat exchanger is more, and the load of motor can be larger, and running current is also larger, therefore can determine whether to need to carry out dust removal process to outdoor heat exchanger by the running current detecting motor.
According to one embodiment of present invention, also comprise: processing unit, for according to the proportionate relationship between described running current and described predetermined current value, determine the dirty stifled state of described outdoor heat exchanger; Described control unit specifically for, according to the dirty stifled state of described outdoor heat exchanger, at least control described motor reversion.
According to an embodiment of the invention for the dust arrester of air conditioner chamber's external heat exchanger, if the running current of motor is larger, then illustrate that the dirty stifled state of outdoor heat exchanger is more serious, therefore motor reversion can be controlled according to different dirty stifled states, to guarantee to realize optimum dust removing effects.
According to one embodiment of present invention, described control unit at least control described motor reversion operation comprise:
Only control the reversion of described motor; Or
After the described motor of control rotates forward scheduled duration, control the reversion of described motor; Or
Periodically control after described motor rotates forward the first scheduled duration successively, control described motor and to reverse the second scheduled duration; Or
After described air-conditioner performs defrosting operation, control the reversion of described motor.
In this embodiment, if the dirty stifled state of outdoor heat exchanger is not serious, then only can control motor reversion; Due to the blower fan of air-conditioner may fall to having foreign material, therefore in order to avoid foreign material being sucked air-conditioner inside when motor reverses, therefore motor reversion can be controlled again after control motor rotates forward scheduled duration; When the dirty stifled state of outdoor heat exchanger is more serious, periodically can control electronic rotating and reverse successively, to realize more powerful dust removing effects; In addition, if air-conditioner performs defrosting operation, then the frost on outdoor heat exchanger is melted into water, now can control the cleaning process of motor reversion realization to outdoor heat exchanger.Wherein, the recovery that whether can be commutated by the cross valve judging in air-conditioner determines whether air-conditioner performs defrosting operation, particularly, if cross valve commutation recovers, then determines that air-conditioner completes defrosting operation.
According to one embodiment of present invention, described judging unit also for: before judging whether to need that dust removal process is carried out to described outdoor heat exchanger, judge the whether capable demand of the indoor set of described air-conditioner, and/or judge the whether frosting of described outdoor heat exchanger, and there is no ability need at the described indoor set of judgement, and/or when judging the non-frosting of described outdoor heat exchanger, perform the operation judging whether to need described outdoor heat exchanger to be carried out to dust removal process.
According to an embodiment of the invention for the dust arrester of air conditioner chamber's external heat exchanger, the demand if indoor set is had the ability, motor is then needed to rotate forward, therefore by not having just to judge whether during ability need to need to carry out dust removal process to outdoor heat exchanger at judgement indoor set, making it possible to avoid still to control when indoor set has the ability demand motor and reversing and the normal operation that affects air-conditioner.Simultaneously, due to outdoor heat exchanger when frosting to the wind speed in the running current of motor, ducting system and influenced by wind pressure larger, therefore pass through just to judge whether to need to carry out dust removal process to outdoor heat exchanger when the non-frosting of judgement outdoor unit heat exchanger, make it possible to avoid the wind speed in the running current when outdoor heat-transmission device frosting still according to motor, ducting system or blast judge whether to need to carry out dust removal process to outdoor heat exchanger and cause judged result inaccurate.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 shows according to an embodiment of the invention for the schematic flow diagram of the dust collection method of air conditioner chamber's external heat exchanger;
Fig. 2 shows according to an embodiment of the invention for the schematic block diagram of the dust arrester of air conditioner chamber's external heat exchanger;
Fig. 3 shows the structural representation of air-conditioner according to an embodiment of the invention;
Fig. 4 shows the schematic flow diagram of the method for the dirty stifled state judging condenser according to an embodiment of the invention;
Fig. 5 shows the schematic flow diagram of air outlet foreign material cleaning pattern according to an embodiment of the invention;
Fig. 6 shows the schematic flow diagram of daily according to an embodiment of the invention dedusting pattern;
Fig. 7 shows the schematic flow diagram strengthening dedusting pattern according to an embodiment of the invention;
Fig. 8 shows the schematic flow diagram of superpower according to an embodiment of the invention dedusting pattern;
Fig. 9 shows the schematic flow diagram of bimodulus dedusting pattern according to an embodiment of the invention;
Figure 10 shows the schematic flow diagram of timing dusting pattern according to an embodiment of the invention;
Figure 11 shows the schematic flow diagram of the automatic dust removing method of air-conditioner according to an embodiment of the invention.
Detailed description of the invention
In order to more clearly understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Set forth a lot of detail in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention is not by the restriction of following public specific embodiment.
The off-premises station of the air-conditioner in the present invention comprises outdoor heat exchanger, and the ducting system be made up of motor and fan blade.
Fig. 1 shows according to an embodiment of the invention for the schematic flow diagram of the dust collection method of air conditioner chamber's external heat exchanger.
As shown in Figure 1, according to an embodiment of the invention for the dust collection method of air conditioner chamber's external heat exchanger, comprising: step 102, judge whether to need to carry out dust removal process to described outdoor heat exchanger; Step 104, when judging to need to carry out dust removal process to described outdoor heat exchanger, at least control the reversion of described motor, wherein, when described off-premises station normally works, described motor rotates forward.
By when determining to need to carry out dust removal process to outdoor heat exchanger (condenser), control motor reverses, make motor that fan blade can be driven to produce contrary reverse distinguished and admirable in direction when normally working with off-premises station, thus the dust that can effectively remove on outdoor heat exchanger, achieve air-conditioner carries out dedusting automatically effect to outdoor heat exchanger, be conducive to the heat exchange efficiency guaranteeing that condensation utensil is higher, when it also avoid manual cleaning condenser, need the troublesome operation of taking off-premises station apart simultaneously.
Wherein, judge whether that the scheme needing to carry out outdoor heat exchanger dust removal process can comprise:
Scheme one:
According to one embodiment of present invention, judge whether that the step needing to carry out described outdoor heat exchanger dust removal process specifically comprises: detect blast when described motor rotates forward in real time by the wind pressure sensor be arranged on described outdoor heat exchanger, and/or detect wind speed when described motor rotates forward in real time by the air velocity transducer be arranged on described outdoor heat exchanger; If blast when described motor rotates forward is more than or equal to predetermined blast, and/or wind speed when described motor rotates forward is less than or equal to predetermined wind speed, then judging needs to carry out dust removal process to described outdoor heat exchanger.
Due to the dust on outdoor heat exchanger more time, ducting system in off-premises station is not smooth, cause blast comparatively large and wind speed is less, therefore can determine whether to need to carry out dust removal process to outdoor heat exchanger according to the wind pressure sensor be arranged on outdoor heat exchanger and/or air velocity transducer.
Scheme two:
According to one embodiment of present invention, judge whether that the step needing to carry out described outdoor heat exchanger dust removal process specifically comprises: judge whether current time reaches the dedusting time of setting, if so, then judge to need to carry out dust removal process to described outdoor heat exchanger.The program is timing dusting scheme.
Scheme three:
According to one embodiment of present invention, judge whether that the step needing to carry out described outdoor heat exchanger dust removal process specifically comprises: when described motor rotates forward, detect the running current of described motor in real time; If the running current of described motor is more than or equal to predetermined current value, then judge to need to carry out dust removal process to described outdoor heat exchanger.Particularly, the dust on outdoor heat exchanger is more, and the load of motor can be larger, and running current is also larger, therefore can determine whether to need to carry out dust removal process to outdoor heat exchanger by the running current detecting motor.
According to one embodiment of present invention, when judging to need to carry out dust removal process to described outdoor heat exchanger, also comprise: according to the proportionate relationship between described running current and described predetermined current value, determine the dirty stifled state of described outdoor heat exchanger, and according to the dirty stifled state of described outdoor heat exchanger, at least control the reversion of described motor.
Particularly, if the running current of motor is larger, then illustrate that the dirty stifled state of outdoor heat exchanger is more serious, therefore can control motor reversion according to different dirty stifled states, to guarantee to realize optimum dust removing effects.
According to one embodiment of present invention, at least control the reversion of described motor to comprise:
Only control the reversion of described motor; Or
After the described motor of control rotates forward scheduled duration, control the reversion of described motor; Or
Periodically control after described motor rotates forward the first scheduled duration successively, control described motor and to reverse the second scheduled duration; Or
After described air-conditioner performs defrosting operation, control the reversion of described motor.
In this embodiment, if the dirty stifled state of outdoor heat exchanger is not serious, then only can control motor reversion; Due to the blower fan of air-conditioner may fall to having foreign material, therefore in order to avoid foreign material being sucked air-conditioner inside when motor reverses, therefore motor reversion can be controlled again after control motor rotates forward scheduled duration; When the dirty stifled state of outdoor heat exchanger is more serious, periodically can control electronic rotating and reverse successively, to realize more powerful dust removing effects; In addition, if air-conditioner performs defrosting operation, then the frost on outdoor heat exchanger is melted into water, now can control the cleaning process of motor reversion realization to outdoor heat exchanger.Wherein, the recovery that whether can be commutated by the cross valve judging in air-conditioner determines whether air-conditioner performs defrosting operation, particularly, if cross valve commutation recovers, then determines that air-conditioner completes defrosting operation.
According to one embodiment of present invention, before judging whether to need that the step of dust removal process is carried out to described outdoor heat exchanger, also comprise: judge whether the indoor set of described air-conditioner has the ability demand, and/or judge the whether frosting of described outdoor heat exchanger; If judge, described indoor set does not have ability need, and/or judges the non-frosting of described outdoor heat exchanger, then perform the step judging whether to need described outdoor heat exchanger to be carried out to dust removal process.
Particularly, the demand if indoor set is had the ability, motor is then needed to rotate forward, therefore by not having just to judge whether during ability need to need to carry out dust removal process to outdoor heat exchanger at judgement indoor set, making it possible to avoid still to control when indoor set has the ability demand motor and reversing and the normal operation that affects air-conditioner.Simultaneously, due to outdoor heat exchanger when frosting to the wind speed in the running current of motor, ducting system and influenced by wind pressure larger, therefore pass through just to judge whether to need to carry out dust removal process to outdoor heat exchanger when the non-frosting of judgement outdoor unit heat exchanger, make it possible to avoid the wind speed in the running current when outdoor heat-transmission device frosting still according to motor, ducting system or blast judge whether to need to carry out dust removal process to outdoor heat exchanger and cause judged result inaccurate.
Fig. 2 shows according to an embodiment of the invention for the schematic block diagram of the dust arrester of air conditioner chamber's external heat exchanger.
As shown in Figure 2, according to an embodiment of the invention for the dust arrester 200 of air conditioner chamber's external heat exchanger, comprising: judging unit 202, needing to carry out dust removal process to described outdoor heat exchanger for judging whether; Control unit 204, during for judging at described judging unit 202 to need to carry out dust removal process to described outdoor heat exchanger, at least control the reversion of described motor, wherein, when described off-premises station normally works, described motor rotates forward.
By when determining to need to carry out dust removal process to outdoor heat exchanger (condenser), control motor reverses, make motor that fan blade can be driven to produce contrary reverse distinguished and admirable in direction when normally working with off-premises station, thus the dust that can effectively remove on outdoor heat exchanger, achieve air-conditioner carries out dedusting automatically effect to outdoor heat exchanger, be conducive to the heat exchange efficiency guaranteeing that condensation utensil is higher, when it also avoid manual cleaning condenser, need the troublesome operation of taking off-premises station apart simultaneously.
Wherein, judge whether that the scheme needing to carry out outdoor heat exchanger dust removal process can comprise:
Scheme one:
According to one embodiment of present invention, described judging unit 202 comprises: the first detecting unit 202A, for being detected blast when described motor rotates forward in real time by the wind pressure sensor be arranged on described outdoor heat exchanger, and/or detect wind speed when described motor rotates forward in real time by the air velocity transducer be arranged on described outdoor heat exchanger; First identifying unit 202B, when being more than or equal to predetermined blast for the blast when described motor rotates forward, and/or when the wind speed when described motor rotates forward is less than or equal to predetermined wind speed, judges to need to carry out dust removal process to described outdoor heat exchanger.
Due to the dust on outdoor heat exchanger more time, ducting system in off-premises station is not smooth, cause blast comparatively large and wind speed is less, therefore can determine whether to need to carry out dust removal process to outdoor heat exchanger according to the wind pressure sensor be arranged on outdoor heat exchanger and/or air velocity transducer.
Scheme two:
According to one embodiment of present invention, described judging unit 202 comprises: the second identifying unit 202C, for reach setting in current time the dedusting time time, judge need dust removal process is carried out to described outdoor heat exchanger.The program is timing dusting scheme.
Scheme three:
According to one embodiment of present invention, described judging unit 202 comprises: the second detecting unit 202D, for when described motor rotates forward, detects the running current of described motor in real time; 3rd identifying unit 202E, for when the running current of described motor is more than or equal to predetermined current value, judges to need to carry out dust removal process to described outdoor heat exchanger.Particularly, the dust on outdoor heat exchanger is more, and the load of motor can be larger, and running current is also larger, therefore can determine whether to need to carry out dust removal process to outdoor heat exchanger by the running current detecting motor.
According to one embodiment of present invention, also comprise: processing unit 206, for according to the proportionate relationship between described running current and described predetermined current value, determine the dirty stifled state of described outdoor heat exchanger; Described control unit 204 specifically for, according to the dirty stifled state of described outdoor heat exchanger, at least control described motor reversion.
If the running current of motor is larger, then illustrate that the dirty stifled state of outdoor heat exchanger is more serious, therefore can control motor reversion according to different dirty stifled states, to guarantee to realize optimum dust removing effects.
According to one embodiment of present invention, described control unit 204 at least control described motor reversion operation comprise:
Only control the reversion of described motor; Or
After the described motor of control rotates forward scheduled duration, control the reversion of described motor; Or
Periodically control after described motor rotates forward the first scheduled duration successively, control described motor and to reverse the second scheduled duration; Or
After described air-conditioner performs defrosting operation, control the reversion of described motor.
In this embodiment, if the dirty stifled state of outdoor heat exchanger is not serious, then only can control motor reversion; Due to the blower fan of air-conditioner may fall to having foreign material, therefore in order to avoid foreign material being sucked air-conditioner inside when motor reverses, therefore motor reversion can be controlled again after control motor rotates forward scheduled duration; When the dirty stifled state of outdoor heat exchanger is more serious, periodically can control electronic rotating and reverse successively, to realize more powerful dust removing effects; In addition, if air-conditioner performs defrosting operation, then the frost on outdoor heat exchanger is melted into water, now can control the cleaning process of motor reversion realization to outdoor heat exchanger.Wherein, the recovery that whether can be commutated by the cross valve judging in air-conditioner determines whether air-conditioner performs defrosting operation, particularly, if cross valve commutation recovers, then determines that air-conditioner completes defrosting operation.
According to one embodiment of present invention, described judging unit 202 also for: before judging whether to need that dust removal process is carried out to described outdoor heat exchanger, judge the whether capable demand of the indoor set of described air-conditioner, and/or judge the whether frosting of described outdoor heat exchanger, and there is no ability need at the described indoor set of judgement, and/or when judging the non-frosting of described outdoor heat exchanger, perform the operation judging whether to need described outdoor heat exchanger to be carried out to dust removal process.
The demand if indoor set is had the ability, motor is then needed to rotate forward, therefore by not having just to judge whether during ability need to need to carry out dust removal process to outdoor heat exchanger at judgement indoor set, making it possible to avoid still to control when indoor set has the ability demand motor and reversing and the normal operation that affects air-conditioner.Simultaneously, due to outdoor heat exchanger when frosting to the wind speed in the running current of motor, ducting system and influenced by wind pressure larger, therefore pass through just to judge whether to need to carry out dust removal process to outdoor heat exchanger when the non-frosting of judgement outdoor unit heat exchanger, make it possible to avoid the wind speed in the running current when outdoor heat-transmission device frosting still according to motor, ducting system or blast judge whether to need to carry out dust removal process to outdoor heat exchanger and cause judged result inaccurate.
Technical scheme of the present invention is described in detail below in conjunction with Fig. 3 to Figure 11.
Fig. 3 shows the structural representation of air-conditioner according to an embodiment of the invention.
As shown in Figure 3, air-conditioner according to an embodiment of the invention, comprising: central processing unit 304, memory 308, condenser filth blockage detection device 302, motor control module 306 and motor 310.Wherein, central processing unit 304 controls operation of air conditioner, and memory 308 is used for storing the information such as running status of air-conditioner, and condenser filth blockage detection device 302 is used for detecting the dirty stifled situation of condenser, motor control module 306 controls motor 310 and runs, and motor 310 drags wind wheel and runs.
Wherein, the step of the condenser dust-cleaning scheme of the present invention's proposition is as described below:
Air-conditioner is the dirty stifled situation of periodic detection condenser when operation, if find that condenser is dirty stifled, just records, and controls motor reversal when not using air-condition, removes the foreign matters such as the dust of condenser outer surface.Specifically comprise:
S1: the dirty stifled state of filth blockage detection device Real-Time Monitoring condenser: can utilize be arranged on wind pressure sensor on condenser or air velocity transducer to detect condenser dirty stifled time the change of blast or the change of wind speed, and contrast with the data of storing in memory, to judge the dirty stifled state of condenser; Current sensing means can also be utilized to detect outdoor motor running current, judged the dirty stifled state of condenser by the change of running current.
S2: condenser is not dirty stifled if judge, then continue testing process; If judge, condenser is dirty stifled, then judge that whether air-conditioning is in running order; Duty refers to that indoor set is had the ability demand, and off working state refers to that all off-premises stations of platform therewith connect the indoor set impotentia demand of machine, is in holding state.
S3: if air-conditioning is in running order, then wait for; If air-conditioning is in off working state, then starter motor reversion, to enable dedusting program.
S4: motor reversal dedusting.The process of motor reversal dedusting program is specially: motor control module sends motor reversal signal after receiving dirty stifled status information, and electric motor starting reverses; When motor control module receives the complete signal of dedusting, motor stopping, enters normal operating conditions.
S5: determine whether that dedusting is clean, as totally, then stop; Or timing stops dedusting program.
Particularly, what the present invention proposed determines the method for the dirty stifled state of condenser as shown in Figure 4 by the running current detecting motor.
As shown in Figure 4, judge that the method for the dirty stifled state of condenser comprises according to an embodiment of the invention:
Step 402, gathers the running current I2 of outdoor motor.
Step 404, compares with the current value I1 stored.
Step 406, judges whether 1.1I1≤I2 < 1.2I1 sets up, and if so, then performs step 408; Otherwise, perform step 410.
Step 408, dirty stifled status register puts Z1.
Step 410, judges whether 1.2I1≤I2 < 1.3I1 sets up, and if so, then performs step 412; Otherwise, perform step 414.
Step 412, dirty stifled status register puts Z2.
Step 414, judges whether 1.3I1≤I2 < 1.4I1 sets up, and if so, then performs step 416; Otherwise, perform step 418.
Step 416, dirty stifled status register puts Z3.
Step 418, judges whether I2 >=1.4I1 sets up, and if so, then performs step 420; Otherwise, perform step 422.
Step 420, dirty stifled status register puts Z4.
Step 422, dirty stifled status register puts Z0.
Before introducing the value selection dedusting pattern according to dirty stifled status register, first introduce the multiple dedusting pattern that the application proposes:
Pattern one, air outlet foreign material cleaning pattern:
As shown in Figure 5, the flow process of air outlet foreign material cleaning pattern according to an embodiment of the invention, comprising:
Step 502, start runs.
Step 504, reads the running status of outdoor motor in memory.
Step 506, after judging start, outdoor motor rotates forward and whether is greater than a minute running time, if so, then terminates; Otherwise, return and continue to judge.Wherein, within a minute, can be five minutes.
Pattern two, daily dedusting pattern:
As shown in Figure 6, the flow process of daily according to an embodiment of the invention dedusting pattern, comprising:
Step 602, outdoor motor shuts down n minute.
Step 604, outdoor motor reversion runs setting windscreen m minute.
Step 606, outdoor motor shuts down n minute.
Wherein, n can be 3 minutes, and m can be 10 minutes.
Pattern three, strengthen dedusting pattern:
As shown in Figure 7, strengthen the flow process of dedusting pattern according to an embodiment of the invention, comprising:
Step 702, outdoor motor shuts down n minute.
Step 704, outdoor motor reversion runs setting windscreen m minute.
Step 706, outdoor motor shuts down n minute.
Step 708, outdoor motor rotates forward and runs setting windscreen m minute.
Step 710, outdoor motor shuts down n minute.
Step 712, outdoor motor reversion runs setting windscreen m minute.
Step 714, outdoor motor shuts down n minute.
Step 716, outdoor motor rotates forward and runs setting windscreen m minute.
Under this pattern, outdoor motor periodically can reverse, rotate forward.
Wherein, n can be 3 minutes, and m can be 10 minutes.
Pattern four, superpower dedusting pattern:
As shown in Figure 8, the flow process of superpower according to an embodiment of the invention dedusting pattern, comprising:
Step 802, runs and strengthens dedusting pattern L time.L can be 3.
Pattern five, bimodulus dedusting pattern:
As shown in Figure 9, the flow process of bimodulus dedusting pattern according to an embodiment of the invention, comprising:
Step 902, judges that whether cross valve commutates recovery, namely judges whether air-conditioner completes defrost operation, if so, then performs step 904; Otherwise, return and continue to judge.
Step 904, enables daily dedusting pattern.
Pattern six, timing dusting pattern:
As shown in Figure 10, the flow process of timing dusting pattern according to an embodiment of the invention, comprising:
Step 1002, start runs.
Step 1004, reads the timing dusting time of condenser in memory.
Step 1006, judges whether current time reaches the timing dusting time of condenser, if so, then performs step 1008; Otherwise, return step 1006.
Step 1008, judges the whether capable demand of indoor set, if so, then terminates; Otherwise, perform step 1010.
Step 1010, enables air outlet foreign material cleaning pattern.
Step 1012, enables daily dedusting pattern.
The value according to dirty stifled status register describing the present invention's proposition below in conjunction with Figure 11 in detail selects dedusting pattern, to realize the method for automatic dust removing.
Figure 11 shows the schematic flow diagram of the automatic dust removing method of air-conditioner according to an embodiment of the invention.
As shown in figure 11, the automatic dust removing method of air-conditioner according to an embodiment of the invention, comprising:
Step 1102, off-premises station powers on.
Step 1104, judges off-premises station whether frosting, if so, then returns and continues to judge; Otherwise, perform step 1106.
Step 1106, judges the whether capable demand of indoor set, if so, then returns and continue to judge; Otherwise, perform step 1108.
Step 1108, reads the value of the dirty stifled status register of condenser.
Step 1110, judges whether dirty stifled state is Z1, if so, then performs step 1112; Otherwise, perform step 1116.
Step 1112, enables air outlet foreign material cleaning pattern.
Step 1114, enables daily dedusting pattern.
Step 1116, judges whether dirty stifled state is Z2, if so, then performs step 1118; Otherwise, perform step 1122.
Step 1118, enables air outlet foreign material cleaning pattern.
Step 1120, enables daily dedusting pattern.
Step 1122, judges whether dirty stifled state is Z3, if so, then performs step 1124; Otherwise, perform step 1130.
Step 1124, enables air outlet foreign material cleaning pattern.
Step 1126, enables superpower dedusting pattern.
Step 1128, enables bimodulus dedusting pattern.
Step 1130, judges whether dirty stifled state is Z4, if so, then performs step 1132; Otherwise, terminate.
Step 1132, the dirty stifled prompting of report condenser.
Describe technical scheme of the present invention in detail with specific embodiment above, individual in other embodiments of the invention, dedusting pattern corresponding to different dirty stifled state also can adjust according to actual conditions.
More than be described with reference to the accompanying drawings technical scheme of the present invention, the present invention proposes a kind of dust-cleaning scheme for air conditioner chamber's external heat exchanger newly, achieve air-conditioner carries out dedusting automatically effect to outdoor heat exchanger, be conducive to the heat exchange efficiency guaranteeing that condensation utensil is higher, when it also avoid manual cleaning condenser, need the troublesome operation of taking off-premises station apart simultaneously.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. for a dust collection method for air conditioner chamber's external heat exchanger, it is characterized in that, the off-premises station of described air-conditioner comprises described outdoor heat exchanger, and the ducting system be made up of motor and fan blade, and described dust collection method, comprising:
Judge whether to need to carry out dust removal process to described outdoor heat exchanger;
When judging to need to carry out dust removal process to described outdoor heat exchanger, at least control the reversion of described motor, wherein, when described off-premises station normally works, described motor rotates forward.
2. the dust collection method for air conditioner chamber's external heat exchanger according to claim 1, is characterized in that, judges whether that the step needing to carry out described outdoor heat exchanger dust removal process specifically comprises:
Detect blast when described motor rotates forward in real time by the wind pressure sensor be arranged on described outdoor heat exchanger, and/or detect wind speed when described motor rotates forward in real time by the air velocity transducer be arranged on described outdoor heat exchanger;
If blast when described motor rotates forward is more than or equal to predetermined blast, and/or wind speed when described motor rotates forward is less than or equal to predetermined wind speed, then judging needs to carry out dust removal process to described outdoor heat exchanger.
3. the dust collection method for air conditioner chamber's external heat exchanger according to claim 1, is characterized in that, judges whether that the step needing to carry out described outdoor heat exchanger dust removal process specifically comprises:
Judge whether current time reaches the dedusting time of setting, if so, then judge to need to carry out dust removal process to described outdoor heat exchanger.
4. the dust collection method for air conditioner chamber's external heat exchanger according to claim 1, is characterized in that, judges whether that the step needing to carry out described outdoor heat exchanger dust removal process specifically comprises:
When described motor rotates forward, detect the running current of described motor in real time;
If the running current of described motor is more than or equal to predetermined current value, then judge to need to carry out dust removal process to described outdoor heat exchanger.
5. the dust collection method for air conditioner chamber's external heat exchanger according to claim 4, is characterized in that, when judging to need to carry out dust removal process to described outdoor heat exchanger, also comprises:
According to the proportionate relationship between described running current and described predetermined current value, determine the dirty stifled state of described outdoor heat exchanger, and according to the dirty stifled state of described outdoor heat exchanger, at least control the reversion of described motor.
6. the dust collection method for air conditioner chamber's external heat exchanger according to claim 5, is characterized in that, at least controls the reversion of described motor and comprises:
Only control the reversion of described motor; Or
After the described motor of control rotates forward scheduled duration, control the reversion of described motor; Or
Periodically control after described motor rotates forward the first scheduled duration successively, control described motor and to reverse the second scheduled duration; Or
After described air-conditioner performs defrosting operation, control the reversion of described motor.
7. the dust collection method for air conditioner chamber's external heat exchanger according to any one of claim 1 to 6, is characterized in that, before judging whether to need to carry out the step of dust removal process to described outdoor heat exchanger, also comprises:
Judge that whether the indoor set of described air-conditioner has the ability demand, and/or judge the whether frosting of described outdoor heat exchanger;
If judge, described indoor set does not have ability need, and/or judges the non-frosting of described outdoor heat exchanger, then perform the step judging whether to need described outdoor heat exchanger to be carried out to dust removal process.
8. for a dust arrester for air conditioner chamber's external heat exchanger, it is characterized in that, the off-premises station of described air-conditioner comprises described outdoor heat exchanger, and the ducting system be made up of motor and fan blade, and described dust arrester, comprising:
Judging unit, needs to carry out dust removal process to described outdoor heat exchanger for judging whether;
Control unit, during for judging at described judging unit to need to carry out dust removal process to described outdoor heat exchanger, at least control the reversion of described motor, wherein, when described off-premises station normally works, described motor rotates forward.
9. the dust arrester for air conditioner chamber's external heat exchanger according to claim 8, is characterized in that, described judging unit comprises:
First detecting unit, for being detected blast when described motor rotates forward in real time by the wind pressure sensor be arranged on described outdoor heat exchanger, and/or detect wind speed when described motor rotates forward in real time by the air velocity transducer be arranged on described outdoor heat exchanger;
First identifying unit, when being more than or equal to predetermined blast for the blast when described motor rotates forward, and/or when the wind speed when described motor rotates forward is less than or equal to predetermined wind speed, judges to need to carry out dust removal process to described outdoor heat exchanger.
10. the dust arrester for air conditioner chamber's external heat exchanger according to claim 8, is characterized in that, described judging unit comprises:
Second identifying unit, for reach setting in current time the dedusting time time, judge need dust removal process is carried out to described outdoor heat exchanger.
11. dust arresters for air conditioner chamber's external heat exchanger according to claim 8, it is characterized in that, described judging unit comprises:
Second detecting unit, for when described motor rotates forward, detects the running current of described motor in real time;
3rd identifying unit, for when the running current of described motor is more than or equal to predetermined current value, judges to need to carry out dust removal process to described outdoor heat exchanger.
12. dust arresters for air conditioner chamber's external heat exchanger according to claim 11, is characterized in that, also comprise:
Processing unit, for according to the proportionate relationship between described running current and described predetermined current value, determines the dirty stifled state of described outdoor heat exchanger;
Described control unit specifically for, according to the dirty stifled state of described outdoor heat exchanger, at least control described motor reversion.
13. dust arresters for air conditioner chamber's external heat exchanger according to claim 12, is characterized in that, the operation that described control unit at least controls the reversion of described motor comprises:
Only control the reversion of described motor; Or
After the described motor of control rotates forward scheduled duration, control the reversion of described motor; Or
Periodically control after described motor rotates forward the first scheduled duration successively, control described motor and to reverse the second scheduled duration; Or
After described air-conditioner performs defrosting operation, control the reversion of described motor.
The dust arrester for air conditioner chamber's external heat exchanger according to any one of 14. according to Claim 8 to 13, is characterized in that, described judging unit also for:
Before judging whether to need that dust removal process is carried out to described outdoor heat exchanger, judge the whether capable demand of the indoor set of described air-conditioner, and/or judge the whether frosting of described outdoor heat exchanger, and there is no ability need at the described indoor set of judgement, and/or when judging the non-frosting of described outdoor heat exchanger, perform the operation judging whether to need described outdoor heat exchanger to be carried out to dust removal process.
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| CN201510113000.7A CN104729016A (en) | 2015-03-13 | 2015-03-13 | Dust removal method and device applied to air conditioner outdoor heat exchanger |
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