CN106288144A - Air-conditioner and Defrost method thereof - Google Patents
Air-conditioner and Defrost method thereof Download PDFInfo
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- CN106288144A CN106288144A CN201610600109.8A CN201610600109A CN106288144A CN 106288144 A CN106288144 A CN 106288144A CN 201610600109 A CN201610600109 A CN 201610600109A CN 106288144 A CN106288144 A CN 106288144A
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- Prior art keywords
- frosting
- outdoor heat
- heat exchanger
- blast
- degree
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of air-conditioner and Defrost method thereof, said method comprising the steps of: air-conditioner run with heating mode and outdoor environment temperature less than preset temperature time, obtain in the rotating speed of the blast of outdoor heat exchanger, the wind speed of outdoor heat exchanger, the electric current of outdoor fan and outdoor fan any one；Any one in the rotating speed of blast, the wind speed of outdoor heat exchanger, the electric current of outdoor fan and outdoor fan according to outdoor heat exchanger judges the frosting degree of outdoor heat exchanger；And select the defrosting mode control air-conditioner corresponding with frosting degree to defrost according to frosting degree.The method selects corresponding defrosting mode to defrost according to the frosting degree of outdoor heat exchanger, thus reaches the purpose of intelligent defrosting, reduces defrosting number of times, improves the heating capacity of air-conditioner, improves Consumer's Experience.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly to Defrost method and a kind of air-conditioner of a kind of air-conditioner.
Background technology
The refrigeration system that the off-premises station of air cooling air conditioner device is typically made up of condenser, pipeline component, compressor, valve member, wind
The ducting system of the composition such as machine, fan blade, guard and control system composition.Wherein, the heat exchange of condenser is dependent on blower fan
The air provided flows through condenser zone walks what heat completed.Condenser is typically by copper pipe and the radiating fin being attached to copper pipe surface
Composition, the effect of radiating fin is to increase heat exchange area, improves heat exchange efficiency.
Generally, the off-premises station of air-conditioner is arranged on outdoor, when outdoor environment temperature is bigger than relatively low, humidity ratio, if
Indoor set runs with heating mode, has low temperature coolant and flow through in condenser, and outdoor humid air will condense in condenser
On radiating fin, slowly form frost.Along with air-conditioner runs the increase of time, the frost on condenser can gradually thicken, reduce
The heat transfer effect of condenser, causes indoor set heating effect to be deteriorated.At this moment air-conditioner can start defrosting program, as controlled cross valve
Commutation, so that high temperature refrigerant flows through condenser, melts the frost on condenser.
In correlation technique, use Fixed Time Interval to defrost, but when actually used, off-premises station frosting not only with ring
Border temperature, to run the time relevant, and also relevant with the load etc. of the humidity of air, indoor set, therefore, time defrosting can be potentially encountered
The actual situation not having frosting to start the most again defrosting program, causes the commutation that cross valve is unnecessary, and indoor set is blown a cold wind over, client
Experience bad.
Summary of the invention
It is contemplated that one of technical problem solved the most to a certain extent in correlation technique.
To this end, it is an object of the present invention to propose the Defrost method of a kind of air-conditioner, the method is according to outdoor heat exchange
The frosting degree of device selects corresponding defrosting mode to defrost, thus reaches the purpose of intelligent defrosting, reduces defrosting number of times, carries
The heating capacity of high air-conditioner, improves Consumer's Experience.
Further object is that a kind of air-conditioner of proposition.
For achieving the above object, one aspect of the present invention embodiment proposes the Defrost method of a kind of air-conditioner, including following
Step: when described air-conditioner is less than preset temperature with heating mode operation and outdoor environment temperature, obtain outdoor heat exchanger
Any one in the rotating speed of blast, the wind speed of outdoor heat exchanger, the electric current of outdoor fan and outdoor fan；According to described outdoor
Any one in the rotating speed of the blast of heat exchanger, the wind speed of outdoor heat exchanger, the electric current of outdoor fan and outdoor fan judges
The frosting degree of described outdoor heat exchanger；And select the defrosting mould corresponding with described frosting degree according to described frosting degree
Formula controls described air-conditioner and defrosts.
The Defrost method of air-conditioner according to embodiments of the present invention, runs and outdoor environment temperature with heating mode at air-conditioner
When degree is less than preset temperature, obtain the blast of outdoor heat exchanger, the wind speed of outdoor heat exchanger, the electric current of outdoor fan and outdoor wind
Any one in the rotating speed of machine, then, according to the blast of outdoor heat exchanger, the wind speed of outdoor heat exchanger, the electricity of outdoor fan
Any one in the rotating speed of stream and outdoor fan judges the frosting degree of outdoor heat exchanger, and selects according to frosting degree and tie
The frost corresponding defrosting mode of degree controls air-conditioner and defrosts, thus reaches the purpose of intelligent defrosting, reduces defrosting number of times,
Improve the heating capacity of air-conditioner, improve Consumer's Experience.
According to one embodiment of present invention, the knot of described outdoor heat exchanger is judged according to the blast of described outdoor heat exchanger
Frost degree, including: if described blast presets blast less than or equal to first, then judge that described outdoor heat exchanger does not occurs frosting；
If described blast is preset blast and presets blast less than or equal to second more than described first, then judge described outdoor heat exchanger
Frosting degree is the first frosting grade；If described blast is preset blast and presets wind less than or equal to the 3rd more than described second
Pressure, then judge that the frosting degree of described outdoor heat exchanger is the second frosting grade；If described blast is preset more than the described 3rd
Blast and preset blast less than or equal to the 4th, then judge that the frosting degree of described outdoor heat exchanger is the 3rd frosting grade；If
Described blast presets blast more than the described 4th, then judge that the frosting degree of described outdoor heat exchanger is the 4th frosting grade, its
In, described first presets described in blast ＜ second presets described in blast ＜ the 3rd and presets described in blast ＜ the 4th and preset blast.
According to one embodiment of present invention, the knot of described outdoor heat exchanger is judged according to the wind speed of described outdoor heat exchanger
Frost degree, including: if described wind speed presets wind speed more than or equal to first, then judge that described outdoor heat exchanger does not occurs frosting；
If described wind speed is preset wind speed and presets wind speed more than or equal to second less than described first, then judge described outdoor heat exchanger
Frosting degree is the first frosting grade；If described wind speed is preset wind speed and presets wind more than or equal to the 3rd less than described second
Speed, then judge that the frosting degree of described outdoor heat exchanger is the second frosting grade；If described wind speed is preset less than the described 3rd
Wind speed and preset wind speed more than or equal to the 4th, then judge that the frosting degree of described outdoor heat exchanger is the 3rd frosting grade；If
Described wind speed presets wind speed less than the described 4th, then judge that the frosting degree of described outdoor heat exchanger is the 4th frosting grade, its
In, described first presets described in wind speed ＞ second presets described in wind speed ＞ the 3rd and presets described in wind speed ＞ the 4th and preset wind speed.
According to one embodiment of present invention, the frosting of described outdoor heat exchanger is judged according to the electric current of described outdoor fan
Degree, including: if described electric current is less than or equal to the first predetermined current, then judge that described outdoor heat exchanger does not occurs frosting；As
The most described electric current more than described first predetermined current and less than or equal to the second predetermined current, then judges the knot of described outdoor heat exchanger
Frost degree is the first frosting grade；If described electric current is more than described second predetermined current and less than or equal to the 3rd predetermined current,
The frosting degree then judging described outdoor heat exchanger is the second frosting grade；If described electric current is more than described 3rd predetermined current
And less than or equal to the 4th predetermined current, then judge that the frosting degree of described outdoor heat exchanger is the 3rd frosting grade；If it is described
Electric current is more than described 4th predetermined current, then judge that the frosting degree of described outdoor heat exchanger is the 4th frosting grade, wherein, and institute
State the 4th predetermined current described in the 3rd predetermined current ＜ described in the second predetermined current ＜ described in the first predetermined current ＜.
According to one embodiment of present invention, the frosting of described outdoor heat exchanger is judged according to the rotating speed of described outdoor fan
Degree, including: if described rotating speed is more than or equal to the first preset rotation speed, then judge that described outdoor heat exchanger does not occurs frosting；As
The most described rotating speed less than described first preset rotation speed and more than or equal to the second preset rotation speed, then judges the knot of described outdoor heat exchanger
Frost degree is the first frosting grade；If described rotating speed is less than described second preset rotation speed and more than or equal to the 3rd preset rotation speed,
The frosting degree then judging described outdoor heat exchanger is the second frosting grade；If described rotating speed is less than described 3rd preset rotation speed
And more than or equal to the 4th preset rotation speed, then judge that the frosting degree of described outdoor heat exchanger is the 3rd frosting grade；If it is described
Rotating speed is less than described 4th preset rotation speed, then judge that the frosting degree of described outdoor heat exchanger is the 4th frosting grade, wherein, and institute
State the 4th preset rotation speed described in the 3rd preset rotation speed ＞ described in the second preset rotation speed ＞ described in the first preset rotation speed ＞.
According to one embodiment of present invention, described corresponding with described frosting degree according to the selection of described frosting degree
Defrosting mode defrosts, including: if the frosting degree of described outdoor heat exchanger is the first frosting degree, then select first to remove
Frost pattern, described first defrosting mode includes controlling compressor shutdown the first Preset Time, and controls described outdoor fan with in advance
If wind shelves run described first Preset Time；If the frosting degree of described outdoor heat exchanger is the second frosting degree, then select
Second defrosting mode, described second defrosting mode includes that controlling described outdoor fan shuts down the second Preset Time, and controls four-way
Valve commutates and keeps described second Preset Time；If the frosting degree of described outdoor heat exchanger is the 3rd frosting degree, then select
Selecting the 3rd defrosting mode, described 3rd defrosting mode includes that controlling described outdoor fan shuts down the 3rd Preset Time, and controls four
Logical valve commutates and keeps described 3rd Preset Time, and wherein, described 3rd Preset Time is more than described second Preset Time；If
The frosting degree of described outdoor heat exchanger is the 4th frosting degree, then select the 4th defrosting mode, described 4th defrosting mode bag
Include the described outdoor fan of control and shut down the 4th Preset Time, and control cross valve commutation and keep described 4th Preset Time, its
In, described 4th Preset Time is more than described 3rd Preset Time.
For achieving the above object, a kind of air-conditioner that another aspect of the present invention embodiment proposes, including: outdoor heat exchanger；
Outdoor fan；Acquisition module, is used for when described air-conditioner is less than preset temperature with heating mode operation and outdoor environment temperature,
Obtain the blast of described outdoor heat exchanger, the wind speed of described outdoor heat exchanger, the electric current of described outdoor fan and described outdoor wind
Any one in the rotating speed of machine；Control module, described control module is connected with described acquisition module, for according to described outdoor
In the rotating speed of the blast of heat exchanger, the wind speed of described outdoor heat exchanger, the electric current of described outdoor fan and described outdoor fan
Any one judges the frosting degree of described outdoor heat exchanger, and selects relative with described frosting degree according to described frosting degree
The defrosting mode answered controls described air-conditioner and defrosts.
Air-conditioner according to embodiments of the present invention, is less than default at air-conditioner with heating mode operation and outdoor environment temperature
During temperature, obtain the blast of outdoor heat exchanger, the wind speed of outdoor heat exchanger, the electric current of outdoor fan and outdoor by acquisition module
Any one in the rotating speed of blower fan, then, control module is according to the blast of outdoor heat exchanger, the wind speed of outdoor heat exchanger, room
Any one in the electric current of outer blower fan and the rotating speed of outdoor fan judges the frosting degree of outdoor heat exchanger, and according to frosting journey
Degree selects the defrosting mode control air-conditioner corresponding with frosting degree to defrost, thus reaches the purpose of intelligent defrosting, subtracts
Defrost number of times less, improves the heating capacity of air-conditioner, improves Consumer's Experience.
According to one embodiment of present invention, described control module judges described room according to the blast of described outdoor heat exchanger
During the frosting degree of external heat exchanger, wherein, if described blast presets blast less than or equal to first, described control module then judges
There is not frosting in described outdoor heat exchanger；If described blast is preset blast and presets wind less than or equal to second more than described first
Pressure, described control module then judges that the frosting degree of described outdoor heat exchanger is the first frosting grade；If described blast is more than
Described second presets blast and presets blast less than or equal to the 3rd, and described control module then judges the frosting of described outdoor heat exchanger
Degree is the second frosting grade；If described blast is preset blast and presets blast less than or equal to the 4th more than the described 3rd, institute
State control module and then judge that the frosting degree of described outdoor heat exchanger is the 3rd frosting grade；If described blast is more than described the
Four preset blast, and described control module then judges that the frosting degree of described outdoor heat exchanger is the 4th frosting grade, wherein, described
First presets described in blast ＜ second presets described in blast ＜ the 3rd and presets described in blast ＜ the 4th and preset blast.
According to one embodiment of present invention, described control module judges described room according to the wind speed of described outdoor heat exchanger
During the frosting degree of external heat exchanger, wherein, if described wind speed presets wind speed more than or equal to first, described control module then judges
There is not frosting in described outdoor heat exchanger；If described wind speed is preset wind speed and presets wind more than or equal to second less than described first
Speed, described control module then judges that the frosting degree of described outdoor heat exchanger is the first frosting grade；If described wind speed is less than
Described second presets wind speed and presets wind speed more than or equal to the 3rd, and described control module then judges the frosting of described outdoor heat exchanger
Degree is the second frosting grade；If described wind speed is preset wind speed and presets wind speed more than or equal to the 4th less than the described 3rd, institute
State control module and then judge that the frosting degree of described outdoor heat exchanger is the 3rd frosting grade；If described wind speed is less than described the
Four preset wind speed, and described control module then judges that the frosting degree of described outdoor heat exchanger is the 4th frosting grade, wherein, described
First presets described in wind speed ＞ second presets described in wind speed ＞ the 3rd and presets described in wind speed ＞ the 4th and preset wind speed.
According to one embodiment of present invention, described control module judges described outdoor according to the electric current of described outdoor fan
During the frosting degree of heat exchanger, wherein, if described electric current is less than or equal to the first predetermined current, described control module then judges institute
State outdoor heat exchanger and frosting does not occurs；If described electric current is more than described first predetermined current and presets electricity less than or equal to second
Stream, described control module then judges that the frosting degree of described outdoor heat exchanger is the first frosting grade；If described electric current is more than
Described second predetermined current and less than or equal to the 3rd predetermined current, described control module then judges the frosting of described outdoor heat exchanger
Degree is the second frosting grade；If described electric current is more than described 3rd predetermined current and less than or equal to the 4th predetermined current, institute
State control module and then judge that the frosting degree of described outdoor heat exchanger is the 3rd frosting grade；If described electric current is more than described the
Four predetermined current, described control module then judges that the frosting degree of described outdoor heat exchanger is the 4th frosting grade, wherein, described
4th predetermined current described in 3rd predetermined current ＜ described in second predetermined current ＜ described in first predetermined current ＜.
According to one embodiment of present invention, described control module judges described outdoor according to the rotating speed of described outdoor fan
During the frosting degree of heat exchanger, wherein, if described rotating speed is more than or equal to the first preset rotation speed, described control module then judges institute
State outdoor heat exchanger and frosting does not occurs；If described rotating speed is less than described first preset rotation speed and is more than or equal to second default turn
Speed, described control module then judges that the frosting degree of described outdoor heat exchanger is the first frosting grade；If described rotating speed is less than
Described second preset rotation speed and more than or equal to the 3rd preset rotation speed, described control module then judges the frosting of described outdoor heat exchanger
Degree is the second frosting grade；If described rotating speed is less than described 3rd preset rotation speed and more than or equal to the 4th preset rotation speed, institute
State control module and then judge that the frosting degree of described outdoor heat exchanger is the 3rd frosting grade；If described rotating speed is less than described the
Four preset rotation speed, described control module then judges that the frosting degree of described outdoor heat exchanger is the 4th frosting grade, wherein, described
4th preset rotation speed described in 3rd preset rotation speed ＞ described in second preset rotation speed ＞ described in first preset rotation speed ＞.
According to one embodiment of present invention, described control module selects and described frosting degree according to described frosting degree
When corresponding defrosting mode defrosts, wherein, if the frosting degree of described outdoor heat exchanger is the first frosting degree, institute
Stating control module then selects the first defrosting mode, described first defrosting mode to include controlling compressor shutdown the first Preset Time,
And control described outdoor fan with default wind shelves described first Preset Time of operation；If the frosting degree of described outdoor heat exchanger
Being the second frosting degree, described control module then selects the second defrosting mode, described second defrosting mode to include controlling described room
Outer fan parking the second Preset Time, and control cross valve commutation and keep described second Preset Time；If described outdoor is changed
The frosting degree of hot device is the 3rd frosting degree, and described control module then selects the 3rd defrosting mode, described 3rd defrosting mode
Shut down the 3rd Preset Time including controlling described outdoor fan, and control cross valve commutation and keep described 3rd Preset Time,
Wherein, described 3rd Preset Time is more than described second Preset Time；If the frosting degree of described outdoor heat exchanger is the 4th
Frosting degree, described control module then selects the 4th defrosting mode, described 4th defrosting mode to include controlling described outdoor fan
Shut down the 4th Preset Time, and control cross valve commutation and keep described 4th Preset Time, wherein, described 4th Preset Time
More than described 3rd Preset Time.
Accompanying drawing explanation
Fig. 1 is the flow chart of the Defrost method of air-conditioner according to embodiments of the present invention；
Fig. 2 is the flow chart judging outdoor heat exchanger frosting degree according to first embodiment of the invention；
Fig. 3 is the flow chart judging outdoor heat exchanger frosting degree according to second embodiment of the invention；
Fig. 4 is the flow chart judging outdoor heat exchanger frosting degree according to third embodiment of the invention；
Fig. 5 is the flow chart judging outdoor heat exchanger frosting degree according to four embodiment of the invention；
Fig. 6 is the flow chart of the Defrost method of air-conditioner according to an embodiment of the invention；And
Fig. 7 is the block diagram of air-conditioner according to embodiments of the present invention.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, the most from start to finish
Same or similar label represents same or similar element or has the element of same or like function.Below with reference to attached
The embodiment that figure describes is exemplary, it is intended to is used for explaining the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings Defrost method and the air-conditioner of the air-conditioner that the embodiment of the present invention proposes are described.
Fig. 1 is the flow chart of the Defrost method of air-conditioner according to embodiments of the present invention.As it is shown in figure 1, this air-conditioner
Defrost method comprises the following steps:
S1, when air-conditioner is less than preset temperature with heating mode operation and outdoor environment temperature, obtains outdoor heat exchanger
Blast, the wind speed of outdoor heat exchanger, the electric current of outdoor fan and outdoor fan rotating speed in any one.
Specifically, when air-conditioner runs with heating mode, first determine whether whether outdoor environment temperature is less than preset temperature,
If outdoor environment temperature is less than preset temperature, then by the wind pressure sensor detection outdoor heat exchange being disposed in the outdoor on heat exchanger
The blast of device, or the wind speed of the air velocity transducer sensing chamber external heat exchanger by being disposed in the outdoor on heat exchanger, or pass through
The electric current of current sensor detection outdoor fan, or the rotating speed by speed detector detection outdoor fan.Wherein, preset
Temperature can be demarcated according to practical situation, and such as preset temperature can be 0 DEG C.
S2, turning according to blast, the wind speed of outdoor heat exchanger, the electric current of outdoor fan and the outdoor fan of outdoor heat exchanger
Any one in speed judges the frosting degree of outdoor heat exchanger.
Specifically, the blast of the outdoor heat exchanger got can be compared with default wind pressure data, or by room
The wind speed of external heat exchanger compares with default air speed data, or is compared with predetermined current data by the electric current of outdoor fan
Relatively, or the rotating speed of outdoor fan is compared with preset rotation speed data, judge the frosting degree of outdoor heat exchanger.
According to one embodiment of present invention, judge the frosting degree of outdoor heat exchanger according to the blast of outdoor heat exchanger,
Including: if blast presets blast less than or equal to first, then judge that outdoor heat exchanger does not occurs frosting；If blast is more than first
Preset blast and preset blast less than or equal to second, then judging that the frosting degree of outdoor heat exchanger is the first frosting grade；If
Blast is preset blast and presets blast less than or equal to the 3rd more than second, then judge that the frosting degree of outdoor heat exchanger is the second knot
Frost grade；If blast is preset blast and presets blast less than or equal to the 4th more than the 3rd, then judge the frosting of outdoor heat exchanger
Degree is the 3rd frosting grade；If blast presets blast more than the 4th, then judge that the frosting degree of outdoor heat exchanger is the 4th
Frosting grade.Wherein, first presets blast ＜ second presets blast ＜ the 3rd and presets blast ＜ the 4th and preset blast, and first to
Four preset blast can demarcate according to practical situation, such as, can be obtained by great many of experiments test.
Specifically, as in figure 2 it is shown, according to the blast of outdoor heat exchanger judge the frosting degree of outdoor heat exchanger can include with
Lower step:
S101, obtains the blast P2 of outdoor heat exchanger.
S102, compares with default wind pressure data P1.
S103, it is judged that whether K2*P1 >=P2 ＞ K1*P1 sets up.If it is, perform step S104；If it does not, execution step
S105。
S104, the frosting degree of outdoor heat exchanger is the first frosting grade Z1, and now frost layer is relatively thin.
S105, it is judged that whether K3*P1 >=P2 ＞ K2*P1 sets up.If it is, perform step S106；If it does not, execution step
S107。
S106, the frosting degree of outdoor heat exchanger is the second frosting grade Z2.
S107, it is judged that whether K4*P1 >=P2 ＞ K3*P1 sets up.If it is, perform step S108；If it does not, execution step
S109。
S108, the frosting degree of outdoor heat exchanger is the 3rd frosting grade Z3.
S109, it is judged that whether P2 ＞ K4*P1 sets up.If it is, perform step S110；If it does not, perform step S111.Its
In, K1 to K4 can be obtained by great many of experiments test, such as, and K1=1.1, K2=1.2, K3=1.3, K4=1.4.
S110, the frosting degree of outdoor heat exchanger is the 4th frosting grade Z4, and now frost layer is thicker.
S111, frosting grade is Z0, and frosting does not i.e. occur.
According to one embodiment of present invention, judge the frosting degree of outdoor heat exchanger according to the wind speed of outdoor heat exchanger,
Including: if wind speed presets wind speed more than or equal to first, then judge that outdoor heat exchanger does not occurs frosting；If wind speed is less than first
Preset wind speed and preset wind speed more than or equal to second, then judging that the frosting degree of outdoor heat exchanger is the first frosting grade；If
Wind speed is preset wind speed and presets wind speed more than or equal to the 3rd less than second, then judge that the frosting degree of outdoor heat exchanger is the second knot
Frost grade；If wind speed is preset wind speed and presets wind speed more than or equal to the 4th less than the 3rd, then judge the frosting of outdoor heat exchanger
Degree is the 3rd frosting grade；If wind speed presets wind speed less than the 4th, then judge that the frosting degree of outdoor heat exchanger is the 4th
Frosting grade.Wherein, first presets wind speed ＞ second presets wind speed ＞ the 3rd and presets wind speed ＞ the 4th and preset wind speed, and first to
Four preset wind speed can demarcate according to practical situation.
Specifically, as it is shown on figure 3, according to the wind speed of outdoor heat exchanger judge the frosting degree of outdoor heat exchanger can include with
Lower step:
S201, obtains the wind speed V2 of outdoor heat exchanger.
S202, compares with default air speed data V1.
S203, it is judged that whether M1*V1 ＞ V2 >=M2*V1 sets up.If it is, perform step S204；If it does not, execution step
S205。
S204, the frosting degree of outdoor heat exchanger is the first frosting grade Z1, and now frost layer is relatively thin.
S205, it is judged that whether M2*V1 ＞ V2 >=M3*V1 sets up.If it is, perform step S206；If it does not, execution step
S207。
S206, the frosting degree of outdoor heat exchanger is the second frosting grade Z2.
S207, it is judged that whether M3*V1 ＞ V2 >=M4*V1 sets up.If it is, perform step S208；If it does not, execution step
S209。
S208, the frosting degree of outdoor heat exchanger is the 3rd frosting grade Z3.
S209, it is judged that whether V2 ＜ M4*V1 sets up.If it is, perform step S210；If it does not, perform step S211.Its
In, M1 to M4 can be obtained by great many of experiments test, such as, and M1=1.4, M2=1.3, M3=1.2, M4=1.1.
S210, the frosting degree of outdoor heat exchanger is the 4th frosting grade Z4, and now frost layer is thicker.
S211, frosting grade is Z0, and frosting does not i.e. occur.
According to one embodiment of present invention, judge the frosting degree of outdoor heat exchanger according to the electric current of outdoor fan, bag
Include: if electric current is less than or equal to the first predetermined current, then judge that outdoor heat exchanger does not occurs frosting；If electric current is pre-more than first
If electric current and less than or equal to the second predetermined current, then judge that the frosting degree of outdoor heat exchanger is the first frosting grade；If it is electric
Stream more than the second predetermined current and less than or equal to the 3rd predetermined current, then judges that the frosting degree of outdoor heat exchanger is the second frosting
Grade；If electric current is more than the 3rd predetermined current and less than or equal to the 4th predetermined current, then judge the frosting journey of outdoor heat exchanger
Degree is the 3rd frosting grade；If electric current is more than the 4th predetermined current, then judge that the frosting degree of outdoor heat exchanger is the 4th knot
Frost grade, wherein, first predetermined current ＜ the second predetermined current ＜ the 3rd predetermined current ＜ the 4th predetermined current, first to fourth
Predetermined current can be demarcated according to practical situation.
Specifically, as shown in Figure 4, judge that the frosting degree of outdoor heat exchanger can include following according to the electric current of outdoor fan
Step:
S301, obtains the electric current I2 of outdoor fan.
S302, compares with predetermined current data I1.
S303, it is judged that whether K2*I1 >=I2 ＞ K1*I1 sets up.If it is, perform step S304；If it does not, execution step
S305。
S304, the frosting degree of outdoor heat exchanger is the first frosting grade Z1, and now frost layer is relatively thin.
S305, it is judged that whether K3*I1 >=I2 ＞ K2*I1 sets up.If it is, perform step S306；If it does not, execution step
S307。
S306, the frosting degree of outdoor heat exchanger is the second frosting grade Z2.
S307, it is judged that whether K4*I1 >=I2 ＞ K3*I1 sets up.If it is, perform step S308；If it does not, execution step
S309。
S308, the frosting degree of outdoor heat exchanger is the 3rd frosting grade Z3.
S309, it is judged that whether I2 ＞ K4*I1 sets up.If it is, perform step S310；If it does not, perform step S311.Its
In, K1 to K4 can be obtained by great many of experiments test, such as, and K1=1.1, K2=1.2, K3=1.3, K4=1.4.
S310, the frosting degree of outdoor heat exchanger is the 4th frosting grade Z4, and now frost layer is thicker.
S311, frosting grade is Z0, and frosting does not i.e. occur.
According to one embodiment of present invention, judge the frosting degree of outdoor heat exchanger according to the rotating speed of outdoor fan, bag
Include: if rotating speed is less than or equal to the first preset rotation speed, then judge that outdoor heat exchanger does not occurs frosting；If rotating speed is pre-more than first
If rotating speed and less than or equal to the second preset rotation speed, then judge that the frosting degree of outdoor heat exchanger is the first frosting grade；If turned
Speed more than the second preset rotation speed and less than or equal to the 3rd preset rotation speed, then judges that the frosting degree of outdoor heat exchanger is the second frosting
Grade；If rotating speed is more than the 3rd preset rotation speed and less than or equal to the 4th preset rotation speed, then judge the frosting journey of outdoor heat exchanger
Degree is the 3rd frosting grade；If rotating speed is more than the 4th preset rotation speed, then judge that the frosting degree of outdoor heat exchanger is the 4th knot
Frost grade, wherein, first preset rotation speed ＞ the second preset rotation speed ＞ the 3rd preset rotation speed ＞ the 4th preset rotation speed, first to fourth
Preset rotation speed can be demarcated according to practical situation.
Specifically, as it is shown in figure 5, judge that the frosting degree of outdoor heat exchanger can include following according to the rotating speed of outdoor fan
Step:
S401, obtains the rotating speed n2 of outdoor fan.
S402, compares with preset rotation speed data n1.
S403, it is judged that whether M1*n1 ＞ n2 >=M2*n1 sets up.If it is, perform step S404；If it does not, execution step
S405。
S404, the frosting degree of outdoor heat exchanger is the first frosting grade Z1, and now frost layer is relatively thin.
S405, it is judged that whether M2*n1 ＞ n2 >=M3*n1 sets up.If it is, perform step S406；If it does not, execution step
S407。
S406, the frosting degree of outdoor heat exchanger is the second frosting grade Z2.
S407, it is judged that whether M3*n1 ＞ n2 >=M4*n1 sets up.If it is, perform step S408；If it does not, execution step
S409。
S408, the frosting degree of outdoor heat exchanger is the 3rd frosting grade Z3.
S409, it is judged that whether n2 ＜ M4*n1 sets up.If it is, perform step S410；If it does not, perform step S411.Its
In, M1 to M4 can be obtained by great many of experiments test, such as, and M1=1.4, M2=1.3, M3=1.2, M4=1.1.
S410, the frosting degree of outdoor heat exchanger is the 4th frosting grade Z4, and now frost layer is thicker.
S411, frosting grade is Z0, and frosting does not i.e. occur.
S3, selects the defrosting mode corresponding with frosting degree to control air-conditioner according to frosting degree and defrosts.
According to one embodiment of present invention, the defrosting mode corresponding with frosting degree is selected to carry out according to frosting degree
Defrosting, including: if the frosting degree of outdoor heat exchanger is the first frosting degree, then select the first defrosting mode, the first defrosting
Pattern includes controlling compressor shutdown the first Preset Time, and controls outdoor fan and run the first Preset Time with default wind shelves；
If the frosting degree of outdoor heat exchanger is the second frosting degree, then the second defrosting mode, the second defrosting mode is selected to include control
Outdoor fan processed shuts down the second Preset Time, and controls cross valve commutation and keep the second Preset Time；If outdoor heat exchanger
Frosting degree be the 3rd frosting degree, then select the 3rd defrosting mode, the 3rd defrosting mode include control outdoor fan shut down
3rd Preset Time, and control cross valve commutation and keep the 3rd Preset Time；If the frosting degree of outdoor heat exchanger is
Four frosting degree, then select the 4th defrosting mode, and the 4th defrosting mode includes that controlling outdoor fan shuts down the 4th Preset Time, and
Controlling cross valve commutation and keep the 4th Preset Time, wherein, the 3rd Preset Time is more than the second Preset Time, and the 4th when presetting
Between more than the 3rd Preset Time, first to fourth Preset Time can be demarcated according to practical situation.
Specifically, as shown in Figure 6, the Defrost method of air-conditioner comprises the following steps:
S501, air-conditioner powers on.
S502, it is judged that whether air-conditioner runs with heating mode.If it is, perform step S503；If it does not, return step
S502。
S503, it is judged that whether outdoor environment temperature is less than preset temperature T1.If it is, perform step S504；If it does not, return
Return step S503.
S504, obtains the frosting degree of outdoor condenser.
S505, it is judged that whether the frosting degree of outdoor condenser is the first frosting grade Z1.If it is, execution step
S506；If it does not, perform step S507.
S506, enables the first defrosting mode, i.e. controls compressor shutdown t1 minute, and control outdoor fan with default wind shelves
F1 runs t1 minute, and when reaching t1 minute, air-conditioner exits defrosting, and the frosting degree of outdoor condenser is set to Z0.Also
That is, when frost layer is relatively thin, air-conditioner stops heating a period of time, reaches to remove by the wind speed of increasing outdoor fan simultaneously
The purpose of frost.
S507, it is judged that whether the frosting degree of outdoor condenser is the second frosting grade Z2.If it is, execution step
S508；If it does not, perform step S509.
S508, enables the second defrosting mode, the most first controls cross valve commutation, then controls outdoor fan and shuts down t2 minute,
When reaching t2 minute, then controlling cross valve commutation, air-conditioner exits defrosting, and the frosting degree of outdoor condenser is set to
Z0。
S509, it is judged that whether the frosting degree of outdoor condenser is the 3rd frosting grade Z3.If it is, execution step
S510；If it does not, perform step S511.
S510, enables the 3rd defrosting mode, the most first controls cross valve commutation, then controls outdoor fan and shuts down t3 minute,
When reaching t3 minute, then controlling cross valve commutation, air-conditioner exits defrosting, and the frosting degree of outdoor condenser is set to
Z0.Wherein, t3 ＞ t2.
S511, it is judged that whether the frosting degree of outdoor condenser is the 4th frosting grade Z4.If it is, execution step
S512；If it does not, return step S501.
S512, enables the 4th defrosting mode, the most first controls cross valve commutation, then controls outdoor fan and shuts down t4 minute,
When reaching t4 minute, then controlling cross valve commutation, air-conditioner exits defrosting, and the frosting degree of outdoor condenser is set to
Z0.Wherein, t4 ＞ t3.It is to say, when frost layer is thicker, air-conditioner can be controlled and runs a period of time in a chiller mode,
Reaching the purpose of defrosting, the time of wherein running can determine according to frosting degree.
It is understood that in inventive embodiment, defrosting mode can also include other patterns, such as by auxiliary
Thermal source defrosts, or is commutated by cross valve and improve outdoor fan rotating speed and carry out defrosting etc., specifically can be according to actual feelings
Condition is set.
It addition, in inventive embodiment, it is also possible to the heating operation time combining air-conditioner judges whether that needs remove
Frost.That is, when air-conditioner is less than preset temperature with heating mode operation and outdoor environment temperature, it is judged that the heating operation of air-conditioner
Whether the time is more than the 5th preset time t 5.If the heating operation time of air-conditioner is more than the 5th preset time t 5, the most first control
Cross valve processed commutates, and then controls outdoor fan and shuts down t6 minute, when reaching t6 minute, then controls cross valve commutation, air-conditioning
Device exits defrosting.
In sum, the Defrost method of air-conditioner according to embodiments of the present invention, air-conditioner with heating mode run and
When outdoor environment temperature is less than preset temperature, obtain the blast of outdoor heat exchanger, the wind speed of outdoor heat exchanger, the electricity of outdoor fan
Any one in the rotating speed of stream and outdoor fan, then, according to the blast of outdoor heat exchanger, the wind speed of outdoor heat exchanger, room
Any one in the electric current of outer blower fan and the rotating speed of outdoor fan judges the frosting degree of outdoor heat exchanger, and according to frosting journey
Degree selects the defrosting mode control air-conditioner corresponding with frosting degree to defrost, thus reaches the purpose of intelligent defrosting, subtracts
Defrost number of times less, can not only effectively reduce the number of times that indoor fan is blown a cold wind over, and improves the heating capacity of air-conditioner, improves user
Experience, and cross valve commutation number of times can be reduced, increase the service life, the use of auxiliary thermal source can be reduced simultaneously, save
The energy.
Fig. 7 is the block diagram of air-conditioner according to embodiments of the present invention.As it is shown in fig. 7, this air-conditioner includes: outdoor
Heat exchanger 10, outdoor fan 20, acquisition module 30 and control module 40.
Wherein, acquisition module 30 is for being less than preset temperature at air-conditioner with heating mode operation and outdoor environment temperature
Time, obtain turning of the blast of outdoor heat exchanger 10, the wind speed of outdoor heat exchanger 10, the electric current of outdoor fan 20 and outdoor fan 20
Any one in speed.
Specifically, when air-conditioner runs with heating mode, first determine whether whether outdoor environment temperature is less than preset temperature,
If outdoor environment temperature is less than preset temperature, acquisition module 30 is then by being disposed in the outdoor the wind pressure sensor on heat exchanger 10
The blast of sensing chamber's external heat exchanger 10, or by the air velocity transducer sensing chamber external heat exchanger being disposed in the outdoor on heat exchanger 10
The wind speed of 10, or the electric current by current sensor detection outdoor fan 20, or by outside speed detector sensing chamber
The rotating speed of blower fan 20.Wherein preset temperature can be 0 DEG C.
Control module 40 is connected with acquisition module 30, for according to the blast of outdoor heat exchanger 10, outdoor heat exchanger 10
Any one in the rotating speed of wind speed, the electric current of outdoor fan 20 and outdoor fan 20 judges the frosting journey of outdoor heat exchanger 10
Degree, and select the defrosting mode control air-conditioner corresponding with frosting degree to defrost according to frosting degree.
Specifically, control module 40 can by the blast of outdoor heat exchanger 10 that acquisition module 30 gets be stored in control
Default wind pressure data in molding block 40 compares, or is compared with default air speed data by the wind speed of outdoor heat exchanger 10
Relatively, or the electric current of outdoor fan 20 is compared with predetermined current data, or by the rotating speed of outdoor fan 20 with default
Rotary speed data compares, and judges the frosting degree of outdoor heat exchanger 10.
According to one embodiment of present invention, control module 40 judges outdoor heat exchanger according to the blast of outdoor heat exchanger 10
10 frosting degree time, wherein, if blast presets blast less than or equal to first, control module 40 then judges outdoor heat exchanger 10
There is not frosting；If blast is preset blast and presets blast less than or equal to second more than first, control module 40 then judges room
The frosting degree of external heat exchanger 10 is the first frosting grade；If blast is preset blast and presets less than or equal to the 3rd more than second
Blast, control module 40 then judges that the frosting degree of outdoor heat exchanger 10 is the second frosting grade；If blast is pre-more than the 3rd
If blast and preset blast less than or equal to the 4th, control module 40 then judges that the frosting degree of outdoor heat exchanger 10 is the 3rd frosting
Grade；If blast presets blast more than the 4th, control module 40 then judges that the frosting degree of outdoor heat exchanger 10 is the 4th knot
Frost grade, wherein, first presets blast ＜ second presets blast ＜ the 3rd and presets blast ＜ the 4th and preset blast.Concrete such as Fig. 2
Shown in, I will not elaborate.
According to one embodiment of present invention, control module 40 judges outdoor heat exchanger according to the wind speed of outdoor heat exchanger 10
10 frosting degree time, wherein, if wind speed presets wind speed less than or equal to first, control module 40 then judges outdoor heat exchanger 10
There is not frosting；If wind speed is preset wind speed and presets wind speed less than or equal to second more than first, control module 40 then judges room
The frosting degree of external heat exchanger 10 is the first frosting grade；If wind speed is preset wind speed and presets less than or equal to the 3rd more than second
Wind speed, control module 40 then judges that the frosting degree of outdoor heat exchanger 10 is the second frosting grade；If wind speed is pre-more than the 3rd
If wind speed and preset wind speed less than or equal to the 4th, control module 40 then judges that the frosting degree of outdoor heat exchanger 10 is the 3rd frosting
Grade；If wind speed presets wind speed more than the 4th, control module 40 then judges that the frosting degree of outdoor heat exchanger 10 is the 4th knot
Frost grade, wherein, first presets wind speed ＞ second presets wind speed ＞ the 3rd and presets wind speed ＞ the 4th and preset wind speed.Concrete such as Fig. 3
Shown in, I will not elaborate.
According to one embodiment of present invention, control module 40 judges outdoor heat exchanger 10 according to the electric current of outdoor fan 20
Frosting degree time, wherein, if electric current is less than or equal to the first predetermined current, control module 40 then judges outdoor heat exchanger 10 not
There is frosting；If electric current is more than the first predetermined current and less than or equal to the second predetermined current, control module 40 then judges outdoor
The frosting degree of heat exchanger 10 is the first frosting grade；If electric current is more than the second predetermined current and presets electricity less than or equal to the 3rd
Stream, control module 40 then judges that the frosting degree of outdoor heat exchanger 10 is the second frosting grade；If electric current is preset more than the 3rd
Electric current and less than or equal to the 4th predetermined current, control module 40 then judges that the frosting degree of outdoor heat exchanger 10 is the 3rd frosting etc.
Level；If electric current is more than the 4th predetermined current, control module 40 then judges that the frosting degree of outdoor heat exchanger 10 is the 4th frosting
Grade, wherein, first predetermined current ＜ the second predetermined current ＜ the 3rd predetermined current ＜ the 4th predetermined current.Concrete such as Fig. 4 institute
Showing, I will not elaborate.
According to one embodiment of present invention, control module 40 judges outdoor heat exchanger 10 according to the rotating speed of outdoor fan 20
Frosting degree time, wherein, if rotating speed is less than or equal to the first preset rotation speed, control module 40 then judges outdoor heat exchanger 10 not
There is frosting；If rotating speed is more than the first preset rotation speed and less than or equal to the second preset rotation speed, control module 40 then judges outdoor
The frosting degree of heat exchanger 10 is the first frosting grade；If rotating speed is more than the second preset rotation speed and is less than or equal to the 3rd default turn
Speed, control module 40 then judges that the frosting degree of outdoor heat exchanger 10 is the second frosting grade；If rotating speed is preset more than the 3rd
Rotating speed and less than or equal to the 4th preset rotation speed, control module 40 then judges that the frosting degree of outdoor heat exchanger 10 is the 3rd frosting etc.
Level；If rotating speed is more than the 4th preset rotation speed, control module 40 then judges that the frosting degree of outdoor heat exchanger 10 is the 4th frosting
Grade, wherein, first preset rotation speed ＞ the second preset rotation speed ＞ the 3rd preset rotation speed ＞ the 4th preset rotation speed.Concrete such as Fig. 5 institute
Showing, I will not elaborate.
According to one embodiment of present invention, control module 40 selects remove corresponding with frosting degree according to frosting degree
When frost pattern defrosts, wherein, if the frosting degree of outdoor heat exchanger 10 is the first frosting degree, control module 40 is then selected
Select the first defrosting mode, the first defrosting mode include control compressor shutdown the first Preset Time, and control outdoor fan 20 with
Preset wind shelves and run the first Preset Time；If the frosting degree of outdoor heat exchanger 10 is the second frosting degree, control module 40
Controlling outdoor fan 20 shuts down the second Preset Time then to select the second defrosting mode, the second defrosting mode to include, and controls four-way
Valve commutation and holding the second Preset Time；If the frosting degree of outdoor heat exchanger 10 is the 3rd frosting degree, control module 40
Then selecting the 3rd defrosting mode, the 3rd defrosting mode includes that controlling outdoor fan 20 shuts down the 3rd Preset Time, and controls four-way
Valve commutation and holding the 3rd Preset Time；If the frosting degree of outdoor heat exchanger 10 is the 4th frosting degree, control module is then
Controlling outdoor fan 20 shuts down the 4th Preset Time to select the 4th defrosting mode, the 4th defrosting mode to include, and controls cross valve
Commutation and holding the 4th Preset Time, wherein, the 3rd Preset Time is more than the second Preset Time, and the 4th Preset Time is more than the 3rd
Preset Time.The most as shown in Figure 6, I will not elaborate.
It is understood that in inventive embodiment, defrosting mode can also include other patterns, such as by auxiliary
Thermal source defrosts, or is commutated by cross valve and improve outdoor fan rotating speed and carry out defrosting etc., specifically can be according to actual feelings
Condition is set.
It addition, in inventive embodiment, control module 40 can be combined with the heating operation time of air-conditioner and judges
The need of defrosting.That is, when air-conditioner is less than preset temperature with heating mode operation and outdoor environment temperature, control module 40
Judge that whether the heating operation time of air-conditioner is more than the 5th preset time t 5.If the heating operation time of air-conditioner is more than the
Five preset time t 5, control module 40 the most first controls cross valve commutation, then controls outdoor fan 20 and shuts down t6 minute, when reaching
When t6 minute, then controlling cross valve commutation, air-conditioner exits defrosting.
It should be noted that the details not disclosed in the air-conditioner of the embodiment of the present invention, refer to the embodiment of the present invention
Air-conditioner Defrost method disclosed in details, repeat no more the most here.
Air-conditioner according to embodiments of the present invention, is less than default at air-conditioner with heating mode operation and outdoor environment temperature
During temperature, obtain the blast of outdoor heat exchanger, the wind speed of outdoor heat exchanger, the electric current of outdoor fan and outdoor by acquisition module
Any one in the rotating speed of blower fan, then, control module is according to the blast of outdoor heat exchanger, the wind speed of outdoor heat exchanger, room
Any one in the electric current of outer blower fan and the rotating speed of outdoor fan judges the frosting degree of outdoor heat exchanger, and according to frosting journey
Degree selects the defrosting mode corresponding with frosting degree to defrost, thus reaches the purpose of intelligent defrosting, reduces defrosting number of times,
Can not only effectively reduce the number of times that indoor fan is blown a cold wind over, improve the heating capacity of air-conditioner, improve Consumer's Experience, Er Qieneng
Enough reduce cross valve commutation number of times, increase the service life, the use of auxiliary thermal source can be reduced simultaneously, save the energy.
In describing the invention, it is to be understood that term " first ", " second " are only used for describing purpose, and can not
It is interpreted as instruction or hint relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " the
One ", the feature of " second " can express or implicitly include at least one this feature.In describing the invention, " multiple "
It is meant that at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection ", " fixing " etc.
Term should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be to removably connect, or integral；Can be that machinery connects
Connect, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, in can being two elements
The connection in portion or the interaction relationship of two elements, unless otherwise clear and definite restriction.For those of ordinary skill in the art
For, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
Example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material or spy
Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be in office
One or more embodiments or example combine in an appropriate manner.Additionally, in the case of the most conflicting, the skill of this area
The feature of the different embodiments described in this specification or example and different embodiment or example can be tied by art personnel
Close and combination.
Although above it has been shown and described that embodiments of the invention, it is to be understood that above-described embodiment is example
Property, it is impossible to being interpreted as limitation of the present invention, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, revises, replaces and modification.
Claims (12)
1. the Defrost method of an air-conditioner, it is characterised in that comprise the following steps:
When described air-conditioner is less than preset temperature with heating mode operation and outdoor environment temperature, obtain the wind of outdoor heat exchanger
Any one in the rotating speed of pressure, the wind speed of outdoor heat exchanger, the electric current of outdoor fan and outdoor fan；
Blast, the wind speed of outdoor heat exchanger, the electric current of outdoor fan and the rotating speed of outdoor fan according to described outdoor heat exchanger
In any one judge the frosting degree of described outdoor heat exchanger；And
Select the defrosting mode corresponding with described frosting degree to control described air-conditioner according to described frosting degree to defrost.
2. the method for claim 1, it is characterised in that judge that described outdoor is changed according to the blast of described outdoor heat exchanger
The frosting degree of hot device, including:
If described blast presets blast less than or equal to first, then judge that described outdoor heat exchanger does not occurs frosting；
If described blast is preset blast and presets blast less than or equal to second more than described first, then judge described outdoor heat exchange
The frosting degree of device is the first frosting grade；
If described blast is preset blast and presets blast less than or equal to the 3rd more than described second, then judge described outdoor heat exchange
The frosting degree of device is the second frosting grade；
If described blast is preset blast and presets blast less than or equal to the 4th more than the described 3rd, then judge described outdoor heat exchange
The frosting degree of device is the 3rd frosting grade；
If described blast presets blast more than the described 4th, then judge that the frosting degree of described outdoor heat exchanger is the 4th frosting
Grade, wherein, described first presets described in blast ＜ second presets described in blast ＜ the 3rd and presets described in blast ＜ the 4th and preset
Blast.
3. the method for claim 1, it is characterised in that judge that described outdoor is changed according to the wind speed of described outdoor heat exchanger
The frosting degree of hot device, including:
If described wind speed presets wind speed more than or equal to first, then judge that described outdoor heat exchanger does not occurs frosting；
If described wind speed is preset wind speed and presets wind speed more than or equal to second less than described first, then judge described outdoor heat exchange
The frosting degree of device is the first frosting grade；
If described wind speed is preset wind speed and presets wind speed more than or equal to the 3rd less than described second, then judge described outdoor heat exchange
The frosting degree of device is the second frosting grade；
If described wind speed is preset wind speed and presets wind speed more than or equal to the 4th less than the described 3rd, then judge described outdoor heat exchange
The frosting degree of device is the 3rd frosting grade；
If described wind speed presets wind speed less than the described 4th, then judge that the frosting degree of described outdoor heat exchanger is the 4th frosting
Grade, wherein, described first presets described in wind speed ＞ second presets described in wind speed ＞ the 3rd and presets described in wind speed ＞ the 4th and preset
Wind speed.
4. the method for claim 1, it is characterised in that judge described outdoor heat exchange according to the electric current of described outdoor fan
The frosting degree of device, including:
If described electric current is less than or equal to the first predetermined current, then judge that described outdoor heat exchanger does not occurs frosting；
If described electric current is more than described first predetermined current and less than or equal to the second predetermined current, then judge described outdoor heat exchange
The frosting degree of device is the first frosting grade；
If described electric current is more than described second predetermined current and less than or equal to the 3rd predetermined current, then judge described outdoor heat exchange
The frosting degree of device is the second frosting grade；
If described electric current is more than described 3rd predetermined current and less than or equal to the 4th predetermined current, then judge described outdoor heat exchange
The frosting degree of device is the 3rd frosting grade；
If described electric current is more than described 4th predetermined current, then judge that the frosting degree of described outdoor heat exchanger is the 4th frosting
Grade, wherein, described in the 3rd predetermined current ＜ described in the second predetermined current ＜ described in described first predetermined current ＜, the 4th presets
Electric current.
5. the method for claim 1, it is characterised in that judge described outdoor heat exchange according to the rotating speed of described outdoor fan
The frosting degree of device, including:
If described rotating speed is more than or equal to the first preset rotation speed, then judge that described outdoor heat exchanger does not occurs frosting；
If described rotating speed is less than described first preset rotation speed and more than or equal to the second preset rotation speed, then judge described outdoor heat exchange
The frosting degree of device is the first frosting grade；
If described rotating speed is less than described second preset rotation speed and more than or equal to the 3rd preset rotation speed, then judge described outdoor heat exchange
The frosting degree of device is the second frosting grade；
If described rotating speed is less than described 3rd preset rotation speed and more than or equal to the 4th preset rotation speed, then judge described outdoor heat exchange
The frosting degree of device is the 3rd frosting grade；
If described rotating speed is less than described 4th preset rotation speed, then judge that the frosting degree of described outdoor heat exchanger is the 4th frosting
Grade, wherein, described in the 3rd preset rotation speed ＞ described in the second preset rotation speed ＞ described in described first preset rotation speed ＞, the 4th presets
Rotating speed.
6. the method as according to any one of claim 2-5, it is characterised in that described according to the selection of described frosting degree and institute
The defrosting mode stating frosting degree corresponding defrosts, including:
If the frosting degree of described outdoor heat exchanger is the first frosting degree, then selecting the first defrosting mode, described first removes
Frost pattern includes controlling compressor shutdown the first Preset Time, and controls described outdoor fan with default wind shelves operation described first
Preset Time；
If the frosting degree of described outdoor heat exchanger is the second frosting degree, then selecting the second defrosting mode, described second removes
Frost pattern includes that controlling described outdoor fan shuts down the second Preset Time, and controls cross valve commutation and keep described second to preset
Time；
If the frosting degree of described outdoor heat exchanger is the 3rd frosting degree, then selecting the 3rd defrosting mode, the described 3rd removes
Frost pattern includes that controlling described outdoor fan shuts down the 3rd Preset Time, and controls cross valve commutation and keep the described 3rd to preset
Time, wherein, described 3rd Preset Time is more than described second Preset Time；
If the frosting degree of described outdoor heat exchanger is the 4th frosting degree, then selecting the 4th defrosting mode, the described 4th removes
Frost pattern includes that controlling described outdoor fan shuts down the 4th Preset Time, and controls cross valve commutation and keep the described 4th to preset
Time, wherein, described 4th Preset Time is more than described 3rd Preset Time.
7. an air-conditioner, it is characterised in that including:
Outdoor heat exchanger；
Outdoor fan；
Acquisition module, for when described air-conditioner is less than preset temperature with heating mode operation and outdoor environment temperature, obtaining
The blast of described outdoor heat exchanger, the wind speed of described outdoor heat exchanger, the electric current of described outdoor fan and described outdoor fan
Any one in rotating speed；
Control module, described control module is connected with described acquisition module, for according to the blast of described outdoor heat exchanger, described
Any one in the rotating speed of the wind speed of outdoor heat exchanger, the electric current of described outdoor fan and described outdoor fan judges described room
The frosting degree of external heat exchanger, and select the defrosting mode corresponding with described frosting degree to control institute according to described frosting degree
State air-conditioner to defrost.
8. air-conditioner as claimed in claim 7, it is characterised in that described control module is according to the blast of described outdoor heat exchanger
When judging the frosting degree of described outdoor heat exchanger, wherein,
If described blast presets blast less than or equal to first, described control module then judges that described outdoor heat exchanger is tied
Frost；
If described blast is preset blast and presets blast less than or equal to second more than described first, described control module then judges
The frosting degree of described outdoor heat exchanger is the first frosting grade；
If described blast is preset blast and presets blast less than or equal to the 3rd more than described second, described control module then judges
The frosting degree of described outdoor heat exchanger is the second frosting grade；
If described blast is preset blast and presets blast less than or equal to the 4th more than the described 3rd, described control module then judges
The frosting degree of described outdoor heat exchanger is the 3rd frosting grade；
If described blast presets blast more than the described 4th, described control module then judges the frosting journey of described outdoor heat exchanger
Degree is the 4th frosting grade, and wherein, described first presets described in blast ＜ second presets described in blast ＜ the 3rd and preset blast ＜
Described 4th presets blast.
9. air-conditioner as claimed in claim 7, it is characterised in that described control module is according to the wind speed of described outdoor heat exchanger
When judging the frosting degree of described outdoor heat exchanger, wherein,
If described wind speed presets wind speed more than or equal to first, described control module then judges that described outdoor heat exchanger is tied
Frost；
If described wind speed is preset wind speed and presets wind speed more than or equal to second less than described first, described control module then judges
The frosting degree of described outdoor heat exchanger is the first frosting grade；
If described wind speed is preset wind speed and presets wind speed more than or equal to the 3rd less than described second, described control module then judges
The frosting degree of described outdoor heat exchanger is the second frosting grade；
If described wind speed is preset wind speed and presets wind speed more than or equal to the 4th less than the described 3rd, described control module then judges
The frosting degree of described outdoor heat exchanger is the 3rd frosting grade；
If described wind speed presets wind speed less than the described 4th, described control module then judges the frosting journey of described outdoor heat exchanger
Degree is the 4th frosting grade, and wherein, described first presets described in wind speed ＞ second presets described in wind speed ＞ the 3rd and preset wind speed ＞
Described 4th presets wind speed.
10. air-conditioner as claimed in claim 7, it is characterised in that described control module is according to the electric current of described outdoor fan
When judging the frosting degree of described outdoor heat exchanger, wherein,
If described electric current is less than or equal to the first predetermined current, described control module then judges that described outdoor heat exchanger is tied
Frost；
If described electric current is more than described first predetermined current and less than or equal to the second predetermined current, described control module then judges
The frosting degree of described outdoor heat exchanger is the first frosting grade；
If described electric current is more than described second predetermined current and less than or equal to the 3rd predetermined current, described control module then judges
The frosting degree of described outdoor heat exchanger is the second frosting grade；
If described electric current is more than described 3rd predetermined current and less than or equal to the 4th predetermined current, described control module then judges
The frosting degree of described outdoor heat exchanger is the 3rd frosting grade；
If described electric current is more than described 4th predetermined current, described control module then judges the frosting journey of described outdoor heat exchanger
Degree is the 4th frosting grade, wherein, and the 3rd predetermined current ＜ described in the second predetermined current ＜ described in described first predetermined current ＜
Described 4th predetermined current.
11. air-conditioners as claimed in claim 7, it is characterised in that described control module is according to the rotating speed of described outdoor fan
When judging the frosting degree of described outdoor heat exchanger, wherein,
If described rotating speed is more than or equal to the first preset rotation speed, described control module then judges that described outdoor heat exchanger is tied
Frost；
If described rotating speed is less than described first preset rotation speed and more than or equal to the second preset rotation speed, described control module then judges
The frosting degree of described outdoor heat exchanger is the first frosting grade；
If described rotating speed is less than described second preset rotation speed and more than or equal to the 3rd preset rotation speed, described control module then judges
The frosting degree of described outdoor heat exchanger is the second frosting grade；
If described rotating speed is less than described 3rd preset rotation speed and more than or equal to the 4th preset rotation speed, described control module then judges
The frosting degree of described outdoor heat exchanger is the 3rd frosting grade；
If described rotating speed is less than described 4th preset rotation speed, described control module then judges the frosting journey of described outdoor heat exchanger
Degree is the 4th frosting grade, wherein, and the 3rd preset rotation speed ＞ described in the second preset rotation speed ＞ described in described first preset rotation speed ＞
Described 4th preset rotation speed.
12. air-conditioners as according to any one of claim 8-11, it is characterised in that described control module is according to described frosting
When degree selects the defrosting mode corresponding with described frosting degree to defrost, wherein,
If the frosting degree of described outdoor heat exchanger is the first frosting degree, described control module then selects the first defrosting mould
Formula, described first defrosting mode includes controlling compressor shutdown the first Preset Time, and controls described outdoor fan with default wind
Shelves run described first Preset Time；
If the frosting degree of described outdoor heat exchanger is the second frosting degree, described control module then selects the second defrosting mould
Formula, described second defrosting mode includes that controlling described outdoor fan shuts down the second Preset Time, and controls cross valve commutation and protect
Hold described second Preset Time；
If the frosting degree of described outdoor heat exchanger is the 3rd frosting degree, described control module then selects the 3rd defrosting mould
Formula, described 3rd defrosting mode includes that controlling described outdoor fan shuts down the 3rd Preset Time, and controls cross valve commutation and protect
Holding described 3rd Preset Time, wherein, described 3rd Preset Time is more than described second Preset Time；
If the frosting degree of described outdoor heat exchanger is the 4th frosting degree, described control module then selects the 4th defrosting mould
Formula, described 4th defrosting mode includes that controlling described outdoor fan shuts down the 4th Preset Time, and controls cross valve commutation and protect
Holding described 4th Preset Time, wherein, described 4th Preset Time is more than described 3rd Preset Time.
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| CN201610600109.8A CN106288144A (en) | 2016-07-26 | 2016-07-26 | Air-conditioner and Defrost method thereof |
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| CN201610600109.8A CN106288144A (en) | 2016-07-26 | 2016-07-26 | Air-conditioner and Defrost method thereof |
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