CN109140693A - A kind of intelligent defrosting method of convertible frequency air-conditioner - Google Patents
A kind of intelligent defrosting method of convertible frequency air-conditioner Download PDFInfo
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- CN109140693A CN109140693A CN201710450834.6A CN201710450834A CN109140693A CN 109140693 A CN109140693 A CN 109140693A CN 201710450834 A CN201710450834 A CN 201710450834A CN 109140693 A CN109140693 A CN 109140693A
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Abstract
The present invention proposes a kind of intelligent defrosting method of convertible frequency air-conditioner, comprising: S1, air-conditioning booting heating；S2, judge whether air-conditioning meets pre- defrost condition, the pre- defrost stage is entered if meeting；The preset temperature of heating is become pre- defrost preset temperature by S3, air-conditioning, continues to heat；S4, judge whether air-conditioning meets defrost condition, the defrost stage is entered if meeting；S5, air-conditioning carry out defrost, judge whether to meet defrost termination condition, terminate defrost process if meeting.This method is in air-conditioning not yet frosting, or frosting situation is relatively light and when being not enough to open defrost, pre- defrost judgement is carried out first and carries out pre- defrost process, then the room temperature before improving defrost carries out defrost after meeting defrost unlocking condition, not only accelerate defrost speed, the time required to reducing defrost, the defrost efficiency of air-conditioning is improved, and avoid room temperature and exceedingly decline, the fluctuating range for reducing defrost front and back room temperature, improves the comfort level of user.
Description
Technical field
The present invention relates to a kind of intelligent defrosting methods of convertible frequency air-conditioner.
Background technique
With the continuous development of daily electrical home appliance technology, more and more household electrical appliance enter daily life and work
In, but in application process, also there is all kinds of problem and failure in household electrical appliance, hot in winter by taking heat pump air conditioner as an example
When pump-type air conditioner carries out low-temperature heating operation, after outdoor heat exchanger temperature drops to frost point, heat exchanger surface starts frosting, empty
The operation of device band frost is adjusted, the frost tied on condenser will not be removed, be got deeper, or even be frozen, to seriously affect the system of air conditioner
Thermal effect.To guarantee that air-conditioning system can continue to heat, need to carry out defrost processing to air conditioner.
The automation defrosting control program of air conditioner is more not perfect at present, can not effectively realize that " intelligent defrosting has frost
It is defrost, frostless not change " purpose judge inaccurate on the one hand for the beginning condition of defrost process so that air conditioner exists
Not yet frosting when just open defrost process, not only cause the waste of heat, but also influence the usage experience of user, and open too late
Defrost process is opened, defrost difficulty and defrost time are not only increased, seriously affects heating effect, and can melt during defrost
More water is dissolved, processing difficulty is increased；On the other hand, not accurate enough for the termination condition judgement of defrost process, make sky
Tune into the melt frost it is unclean, complete machine runing time is not grown after the frequent defrost of caused air-conditioning and defrost, influences user to air-conditioning
Normal use, and the defrost end time is too late, not only causes the waste of the energy, but also when increasing waiting of the user to heating
Between, influence the use of user.
Heat pump type air conditioner generallys use switching four-way valve at present, the mode of progress refrigeration cycle achievees the purpose that defrost.
But indoor unit must be out of service when this mode will will lead to defrost, and the no normal direction interior space provides heat, will necessarily make room
Interior temperature declines to a great extent, and influences the effect of user's heating.In order to avoid room temperature fall is excessive during defrost, temperature
It is too low, also there is the method using accumulation of heat defrost, bypass defrosting at present, by increasing the components such as storage heater, bypass solenoid valve, realizes
Interior machine can also continue heat supply while outer machine defrost.But these defrosting method higher costs, control is complicated, defrost speed is slower,
And during defrost machine heating load it is also very limited, can not accomplish that room temperature does not decline, can only slightly reduce under room temperature
The amplitude of drop.
Application No. is 201610838610.8 patent document disclose a kind of defrosting control method, defrosting control device and
Heat pump type air conditioner, wherein defrosting control method includes that heat pump type air conditioner runs the first preset time t s with heating mode and continues
Heat exchanger outlet temperature is detected after interval time Δ t, is recorded as Ti；Heat exchanger is detected again using interval time Δ t
Outlet temperature is recorded as T (i+1)；If [T (i+1)-Ti]/Δ t adds 1 less than the first preset value A, cumulative number f；If accumulative
Number f is more than or equal to preset times N, then controls heat pump type air conditioner and start defrost.But this application passes through in defrost deterministic process
Heat exchanger outlet temperature Ti and operation of air conditioner interval time Δ t judges that deterministic process is excessively simple to defrost unlocking condition
It is single, it is unfavorable for improving the accuracy that air-conditioning judges defrost unlocking condition, while the application only relates to defrost unlocking condition, not
Can solve how accurately to defrost termination condition judge and defrost during fluctuations in indoor temperature amplitude it is excessive, shadow
The problem of ringing user's usage comfort.
Application No. is 201510142354.4 patent documents to disclose a kind of defrosting control method of air conditioner, comprising:
Whether monitoring air conditioner currently reaches default defrost condition；When air conditioner currently reaches default defrost condition, air conditioner is improved
Current heating is exported to improve indoor temperature；Monitor the difference between the temperature of current indoor and the temperature of air conditioner setting
Whether it is greater than preset temperature, and monitors air conditioner simultaneously currently whether continuous operation reaches default runing time；Work as current indoor
Temperature and air conditioner setting temperature between difference be greater than preset temperature and/or the current continuous operation of air conditioner and reach pre-
If when runing time, carrying out defrost.But this application is according to existing in the judgement to defrost unlocking condition and termination condition
Technology carries out, and is unfavorable for improving the accuracy that air-conditioning judges defrost unlocking condition and termination condition, can not improve defrost effect
Rate；The application is under the premise of judging defrost unlocking condition using the prior art simultaneously, so that air-conditioning is determining to reach
When defrost condition may just frosting, if continuing at this time using the present processes, the current heating output of air conditioner with
During improving indoor temperature, it can be undoubtedly further exacerbated by air-conditioning frosting situation, be instead the increase of subsequent defrost process
Certain difficulty, is unfavorable for the progress of defrost, while being also unfavorable for improving defrost speed.
Summary of the invention
In view of the deficiencies in the prior art, the purpose of the present invention is to provide a kind of intelligent defrosting sides of convertible frequency air-conditioner
Method, with reach structure it is simple it is at low cost, control is simple, defrost is quickly thorough, and indoor minimum temperature is higher after defrost
Effect.
In order to solve the above technical problems, technical scheme is as follows:
A kind of intelligent defrosting method of convertible frequency air-conditioner, comprising:
S1, air-conditioning booting are heated；
S2, judge whether air-conditioning meets pre- defrost condition, if satisfied, then entering the pre- defrost stage；
S3, air-conditioning are by the preset temperature T of heatingIt is defaultBecome pre- defrost preset temperature TPre- defrost, with TPre- defrostContinue to heat；
S4, judge whether air-conditioning meets defrost condition, if satisfied, then entering the defrost stage, if not satisfied, then continuing
Pre- defrost process；
S5, air-conditioning carry out defrost, and judge whether to meet defrost termination condition, if satisfied, then terminating defrost process, if not
Meet, then continues defrost.
Further, in step s 2, the pre- defrost condition includes:
TExternal disk≤T1；
TOuter ring-TExternal disk≥△T1；
Compressor accumulated running time >=t1, continuous operating time >=t2；
TInner disc-TInner ring< △ T2；In at least one condition；
Wherein, TExternal diskFor outdoor coil temperature, TOuter ringFor outdoor environment temperature, TInner discFor indoor coil pipe, TInner ringFor interior
Environment temperature, T1 are outdoor coil pipe used preset temperature, and △ T1 is that the first rated temperature is poor, and △ T2 is that the second rated temperature is poor, and t1 is
First preset duration, t2 are the second preset duration.
Preferably, in step s 2, air-conditioning is meeting following defrost condition for the moment, then starts pre- defrost:
Defrost condition one: while entering pre- defrost when meeting the following conditions:
TExternal disk≤-3℃；
TOuter ring-TExternal diskMeet lower surface condition:
| TOuter ring | TOuter ring-TExternal disk |
| TOuter ring0 DEG C of > | TOuter ring-TExternal disk≥12℃ |
| - 5 DEG C of < TOuter ring≤0℃ | TOuter ring-TExternal disk≥10℃ |
| - 10 DEG C of < TOuter ring≤-5℃ | TOuter ring-TExternal disk≥9℃ |
| - 15 DEG C of < TOuter ring≤-10℃ | TOuter ring-TExternal disk≥8℃ |
| TOuter ring≤-15℃ | TOuter ring-TExternal disk≥7℃ |
Compressor accumulated running time >=45min, continuous operating time >=5min；
TInner disc-TInner ring17 DEG C of <；
Defrost condition two: while entering pre- defrost when meeting the following conditions:
TExternal disk≤-3℃；
TOuter ring-TExternal diskMeet lower surface condition:
Compressor accumulated running time >=180min, continuous operating time >=5min.
Further, in step s 4, the defrost condition includes:
Pre- defrost time >=t3；
TInner ring-TSetting>=△ T3, and continue t4；In at least one condition；
Wherein, t3 is third preset duration, TInner ringFor indoor environment temperature, TSettingFor the preset temperature of heating, △ T3 is the
Three rated temperatures are poor, and t4 is the 4th preset duration.
Preferably, in step s 4, air-conditioning enters defrost after meeting following either condition:
Pre- defrost time >=10min；
TInner ring-TSetting>=2 DEG C, continue 10s.
Further, in step s 5, the defrost termination condition includes:
The defrost time >=t5；
TExternal disk>=T2 simultaneously continues t6 or more；In at least one condition；
Wherein, TExternal diskFor outdoor coil temperature, T2 is outdoor coil pipe used rated temperature, and t5 is the 5th preset duration, and t6 is the 6th
Preset duration.
Preferably, in step s 5, air-conditioning exits defrost for the moment meeting the following conditions:
Defrost exit criteria one: defrost time >=9min；
Defrost exit criteria two: after defrost carries out 2min, if TExternal disk>=8 DEG C and continue 60S or more；
Defrost exit criteria three: after defrost carries out 2min, if TExternal disk>=12 DEG C and continue 10S or more.
A kind of convertible frequency air-conditioner, using the intelligent defrosting method of the convertible frequency air-conditioner, the convertible frequency air-conditioner includes:
Indoor coil pipe sensor is arranged in convertible frequency air-conditioner indoor unit internal coil, to detect indoor coil temperature
Spend TInner disc；
Indoor environment temperature sensor is arranged on convertible frequency air-conditioner indoor unit outer wall, to detect indoor environment temperature
TInner ring；
Outdoor environment temperature sensor is arranged in frequency-variable air conditioner outdoor machine air inlet, to detect outdoor environment temperature
TOuter ring；
Outdoor coil temperature sensor is arranged in frequency-variable air conditioner outdoor machine internal coil, to sensing chamber's external disk tube temperature
Spend TExternal disk；
Central processing module is arranged inside convertible frequency air-conditioner indoor unit, to handle convertible frequency air-conditioner intelligent defrosting process
Data information, the central processing module respectively with indoor coil pipe sensor, indoor environment temperature sensor, outdoor environment
Temperature sensor room, the connection of outer coil temperature sensor, for handling the relevant temperature information of defrost；
Compressor opens and closes unit, is arranged on compressor of air conditioner, and compressor opening and closing unit is connect with central processing module, uses
Movement is opened or closed in execution compressor；
Indoor fan opens and closes unit, is arranged on air-conditioning indoor fan, and indoor fan opens and closes unit and central processing module
Connection opens or closes movement for execute air-conditioning indoor fan；
Outdoor fan opens and closes unit, is arranged on outdoor fan of air-conditioner, and outdoor fan opens and closes unit and central processing module
Connection opens or closes movement for execute outdoor fan of air-conditioner；
Four-way valve is motor-driven valve, connect with central processing module；
Data storage cell is arranged inside convertible frequency air-conditioner indoor unit, and data storage cell is connect with central processing module,
For storing the relevant information of convertible frequency air-conditioner.
Preferably, the central processing module includes:
Data processing unit, for handling the data information during convertible frequency air-conditioner intelligent defrosting；
Timing unit, for handling the runing time during intelligent defrosting.
Further, the implementation procedure of the convertible frequency air-conditioner defrost movement:
After pre- defrost, central processing module control respectively compressor opening and closing unit, indoor fan opening and closing unit and
Outdoor fan opens and closes unit, closes to compressor of air conditioner, air-conditioning indoor fan and outdoor fan of air-conditioner, centre after 25s
Module control four-way valve is managed to close, central processing module opens and closes unit by compressor and opens compressor of air conditioner after 5s, into
Enter defrost operation；
When defrost terminates to exit, central processing module opens and closes unit by compressor and closes compressor of air conditioner, passes through outdoor
Blower opens and closes unit and opens outdoor fan of air-conditioner, and central processing module control four-way valve is opened after 25s, the central processing after 5s
Module opens and closes unit by compressor and opens compressor of air conditioner, and air-conditioning restores normal heating operation, and air-conditioning indoor fan is by anti-cold
Wind operation.
Compared with prior art, the present invention proposes a kind of intelligent defrosting method of convertible frequency air-conditioner, in air-conditioning not yet frosting, or
Frosting situation is relatively light and when being not enough to open defrost, carries out pre- defrost judgement first and carries out pre- defrost process, by room temperature
By the preset temperature T heatedIt is defaultRise to pre- defrost preset temperature TPre- defrost, improve defrost before room temperature, then to defrost condition
Judged, carries out defrost after meeting defrost unlocking condition；Defrost speed is not only accelerated, the time required to reducing defrost, is improved
The defrost efficiency of air-conditioning, and avoid room temperature and exceedingly decline, reduce the fluctuation width of room temperature before and after defrost
Degree, it is ensured that room temperature is in the more comfortable standard of user always during entire defrost, improves the comfortable of user
Degree.
Detailed description of the invention
In order to illustrate more clearly of the technical solution in the present invention, attached drawing needed in the embodiment will be made below
Simply introduce, it should be apparent that, drawings in the following description are only some embodiments of the invention, for the general of this field
For logical technical staff, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of method flow diagram of the intelligent defrosting method of convertible frequency air-conditioner of the present invention；
Fig. 2 is a kind of another method flow diagram of the intelligent defrosting method of convertible frequency air-conditioner of the present invention；
Fig. 3 is a kind of construction module schematic diagram of convertible frequency air-conditioner of the present invention.
Specific embodiment
With reference to the attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention is further described,
Obviously, described embodiment is only a part of the embodiments of the present invention, rather than whole embodiments.Based in the present invention
Embodiment, those of ordinary skill in the art's every other embodiment obtained under the premise of not making the creative labor,
It shall fall within the protection scope of the present invention.
Embodiment 1
As shown in Fig. 1, a kind of intelligent defrosting method of convertible frequency air-conditioner, comprising:
S1, air-conditioning booting are heated；
S2, judge whether air-conditioning meets pre- defrost condition, if satisfied, then entering the pre- defrost stage；
S3, air-conditioning are by the preset temperature T of heatingIt is defaultBecome pre- defrost preset temperature TPre- defrost, with TPre- defrostContinue to heat；
S4, judge whether air-conditioning meets defrost condition, if satisfied, then entering the defrost stage, if not satisfied, then continuing
Pre- defrost process；
S5, air-conditioning carry out defrost, and judge whether to meet defrost termination condition, if satisfied, then terminating defrost process, if not
Meet, then continues defrost.
It is relatively light in air-conditioning not yet frosting or frosting situation and when being not enough to open defrost in the present embodiment, first to air-conditioning
The judgement for carrying out pre- defrost condition, carries out pre- defrost after meeting condition, by the preset temperature T of heatingIt is defaultIt is default to become pre- defrost
Temperature TPre- defrost, operation of air conditioner frequency is improved, with TPre- defrostContinue to heat, by pre- defrost process, by room temperature by heating
Preset temperature TIt is defaultRise to pre- defrost preset temperature TPre- defrost, improve defrost before room temperature；Then defrost condition is sentenced
It is disconnected, defrost is carried out after meeting defrost unlocking condition.
The present embodiment is relatively light in air-conditioning not yet frosting or frosting situation and under the premise of being not enough to open defrost, first into
The pre- defrost process of row, the room temperature before improving defrost, this makes the amount of stored heat of the air conditioner indoor unit evaporator before defrost starts
Increase, higher defrost temperature can be proposed after defrost unlatching for defrost process, so that defrost speed is accelerated, improve air-conditioning
Defrost efficiency；
On the other hand, the defrost mode as specific to heat pump type air conditioner, this will necessarily make interior during defrost
Temperature decline, influences the body-sensing comfort level of user, and in the present embodiment, carries out pre- defrost process first, by room temperature by
The preset temperature T of heatingIt is defaultRise to pre- defrost preset temperature TPre- defrost, improve defrost before room temperature after, carry out defrost, although
The case where inevitably room temperature declines during defrost, but during defrost, air conditioner indoor unit is to air-conditioning
Under the premise of outdoor unit provides identical heat, compared to the prior art in directly carry out the method for defrost, method of the invention is logical
It crosses pre- defrost and improves room temperature, then carry out the process of defrost, so that the room temperature after defrost is still in higher level,
Ensure that room temperature is in the more comfortable standard of user always during entire defrost, it is comfortable with the heating for improving air-conditioning
Property；Simultaneously because method of the invention accelerates defrost speed, the time required to reducing defrost, defrost is decreased accordingly
Indoor heat reduces the loss amount of indoor heat, avoids room temperature to a certain extent to the time of outdoor transmitting in journey
Exceedingly decline, reduces the fluctuating range of room temperature before and after defrost, further improve the comfort level of user.
Embodiment 2
In order to ensure, to the accuracy of pre- defrost condition, defrost condition and defrost termination condition judgement, making sky in the present invention
The purpose that can effectively realize " intelligent defrosting has white defrost, frostless not change " is adjusted, the present embodiment is to pre- defrost condition, defrost item
The content of part and defrost termination condition describes in detail.
A kind of intelligent defrosting method of convertible frequency air-conditioner, comprising:
S1, air-conditioning booting are heated；
S2, judge whether air-conditioning meets pre- defrost condition, if satisfied, then entering the pre- defrost stage；
S3, air-conditioning are by the preset temperature T of heatingIt is defaultBecome pre- defrost preset temperature TPre- defrost, with TPre- defrostContinue to heat；
S4, judge whether air-conditioning meets defrost condition, if satisfied, then entering the defrost stage, if not satisfied, then continuing
Pre- defrost process；
S5, air-conditioning carry out defrost, and judge whether to meet defrost termination condition, if satisfied, then terminating defrost process, if not
Meet, then continues defrost.
In step s 2, the pre- defrost condition includes:
TExternal disk≤T1；
TOuter ring-TExternal disk≥△T1；
Compressor accumulated running time >=t1, continuous operating time >=t2；
TInner disc-TInner ring< △ T2；In at least one condition；
Wherein, TExternal diskFor outdoor coil temperature, TOuter ringFor outdoor environment temperature, TInner discFor indoor coil pipe, TInner ringFor interior
Environment temperature, T1 are outdoor coil pipe used preset temperature, and △ T1 is that the first rated temperature is poor, and △ T2 is that the second rated temperature is poor, and t1 is
First preset duration, t2 are the second preset duration.
In step s 4, the defrost condition includes:
Pre- defrost time >=t3；
TInner ring-TSetting>=△ T3, and continue t4；In at least one condition；
Wherein, t3 is third preset duration, TInner ringFor indoor environment temperature, TSettingFor the preset temperature of heating, △ T3 is the
Three rated temperatures are poor, and t4 is the 4th preset duration.
In step s 5, the defrost termination condition includes:
The defrost time >=t5；
TExternal disk>=T2 simultaneously continues t6 or more；In at least one condition；
Wherein, TExternal diskFor outdoor coil temperature, T2 is outdoor coil pipe used rated temperature, and t5 is the 5th preset duration, and t6 is the 6th
Preset duration.
Embodiment 3
For the ease of the specific implementation process of intelligent defrosting method in the present invention, sentence in clear intelligent defrosting method in logic
Relevant parameter during disconnected, as shown in Figure 1 and Figure 2, the present embodiment proposes a kind of intelligent defrosting method of convertible frequency air-conditioner, comprising:
S1, air-conditioning booting are heated；
S2, judge whether air-conditioning meets pre- defrost condition, if satisfied, then entering the pre- defrost stage；
S3, air-conditioning are by the preset temperature T of heatingIt is defaultBecome pre- defrost preset temperature TPre- defrost, with TPre- defrostContinue to heat；
S4, judge whether air-conditioning meets defrost condition, if satisfied, then entering the defrost stage, if not satisfied, then continuing
Pre- defrost process；
S5, air-conditioning carry out defrost, and judge whether to meet defrost termination condition, if satisfied, then terminating defrost process, if not
Meet, then continues defrost.
In step s 2, air-conditioning is meeting following defrost condition for the moment, then starts pre- defrost:
Defrost condition one: while entering pre- defrost when meeting the following conditions:
1、TExternal disk≤-3℃；
2、TOuter ring-TExternal diskMeet lower surface condition:
| TOuter ring | TOuter ring-TExternal disk |
| TOuter ring0 DEG C of > | TOuter ring-TExternal disk≥12℃ |
| - 5 DEG C of < TOuter ring≤0℃ | TOuter ring-TExternal disk≥10℃ |
| - 10 DEG C of < TOuter ring≤-5℃ | TOuter ring-TExternal disk≥9℃ |
| - 15 DEG C of < TOuter ring≤-10℃ | TOuter ring-TExternal disk≥8℃ |
| TOuter ring≤-15℃ | TOuter ring-TExternal disk≥7℃ |
3, compressor accumulated running time >=45min, continuous operating time >=5min；
4、TInner disc-TInner ring17 DEG C of <；
Defrost condition two: while entering pre- defrost when meeting the following conditions:
1、TExternal disk≤-3℃；
2、TOuter ring-TExternal diskMeet lower surface condition:
| TOuter ring | TOuter ring-TExternal disk |
| TOuter ring0 DEG C of > | TOuter ring-TExternal disk≥12℃ |
| - 5 DEG C of < TOuter ring≤0℃ | TOuter ring-TExternal disk≥10℃ |
| - 10 DEG C of < TOuter ring≤-5℃ | TOuter ring-TExternal disk≥9℃ |
| - 15 DEG C of < TOuter ring≤-10℃ | TOuter ring-TExternal disk≥8℃ |
| TOuter ring≤-15℃ | TOuter ring-TExternal disk≥7℃ |
3, compressor accumulated running time >=180min, continuous operating time >=5min；
Wherein, TExternal diskFor outdoor coil temperature, TOuter ringFor outdoor environment temperature, TInner discFor indoor coil pipe；TInner ringFor interior
Environment temperature.
In step s 4, air-conditioning enters defrost after meeting following either condition:
1, pre- defrost time >=10min；
2、TInner ring-TSetting>=2 DEG C, continue 10s；
Wherein, TInner ringFor indoor environment temperature, TSettingFor the preset temperature of heating.
In step s 5, air-conditioning meet the following conditions for the moment exit defrost:
Defrost exit criteria one: defrost time >=9min；
Defrost exit criteria two: after defrost carries out 2min, if external disk >=8 DEG C T and continuing 60S or more；
Defrost exit criteria three: after defrost carries out 2min, if external disk >=12 DEG C T and continuing 10S or more.
Meanwhile in order to ensure the room temperature after defrost is still in higher level, room temperature is in entire defrost process
In always in the more comfortable standard of user, preferably, TPre- defrost-TIt is default=2 DEG C.
Embodiment 4
The present embodiment provides a kind of convertible frequency air-conditioners, using the intelligent defrosting method of convertible frequency air-conditioner of the invention, in order to described
On the basis of defrosting method, in order to ensure convertible frequency air-conditioner structure is simple, production cost, the specific convertible frequency air-conditioner packet are reduced
It includes:
Indoor coil pipe sensor is arranged in convertible frequency air-conditioner indoor unit internal coil, to detect indoor coil temperature
Spend T inner disc；
Indoor environment temperature sensor is arranged on convertible frequency air-conditioner indoor unit outer wall, to detect in indoor environment temperature T
Ring；
Outdoor environment temperature sensor is arranged in frequency-variable air conditioner outdoor machine air inlet, to detect outdoor environment temperature T
Outer ring；
Outdoor coil temperature sensor is arranged in frequency-variable air conditioner outdoor machine internal coil, to sensing chamber's external disk tube temperature
Spend T external disk；
Central processing module is arranged inside convertible frequency air-conditioner indoor unit, to handle convertible frequency air-conditioner intelligent defrosting process
Data information, the central processing module respectively with indoor coil pipe sensor, indoor environment temperature sensor, outdoor environment
Temperature sensor room, the connection of outer coil temperature sensor, for handling the relevant temperature information of defrost；
Compressor opens and closes unit, is arranged on compressor of air conditioner, and compressor opening and closing unit is connect with central processing module, uses
Movement is opened or closed in execution compressor；
Indoor fan opens and closes unit, is arranged on air-conditioning indoor fan, and indoor fan opens and closes unit and central processing module
Connection opens or closes movement for execute air-conditioning indoor fan；
Outdoor fan opens and closes unit, is arranged on outdoor fan of air-conditioner, and outdoor fan opens and closes unit and central processing module
Connection opens or closes movement for execute outdoor fan of air-conditioner；
Four-way valve is motor-driven valve, connect with central processing module；
Data storage cell is arranged inside convertible frequency air-conditioner indoor unit, and data storage cell is connect with central processing module,
For storing the relevant information of convertible frequency air-conditioner.
Further, the central processing module includes:
Data processing unit, for handling the data information during convertible frequency air-conditioner intelligent defrosting；
Timing unit, for handling the runing time during intelligent defrosting.
Embodiment 5
On the basis of intelligent defrosting method of the invention, in order to ensure when defrost unlatching, defrost terminate to exit, frequency conversion
It can smoothly open and close, switch between air-conditioning all parts, improve the stability that air-conditioning is run before and after defrost, the present embodiment mentions
Out convertible frequency air-conditioner defrost movement implementation procedure:
After pre- defrost, central processing module control respectively compressor opening and closing unit, indoor fan opening and closing unit and
Outdoor fan opens and closes unit, closes to compressor of air conditioner, air-conditioning indoor fan and outdoor fan of air-conditioner, centre after 25s
Module control four-way valve is managed to close, central processing module opens and closes unit by compressor and opens compressor of air conditioner after 5s, into
Enter defrost operation；
When defrost terminates to exit, central processing module opens and closes unit by compressor and closes compressor of air conditioner, passes through outdoor
Blower opens and closes unit and opens outdoor fan of air-conditioner, and central processing module control four-way valve is opened after 25s, the central processing after 5s
Module opens and closes unit by compressor and opens compressor of air conditioner, and air-conditioning restores normal heating operation, and air-conditioning indoor fan is by anti-cold
Wind operation.The foregoing is merely the preferred embodiments of the application, all in spirit herein not to limit the application
Within principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the application protection.
Claims (10)
1. a kind of intelligent defrosting method of convertible frequency air-conditioner characterized by comprising
S1, air-conditioning booting are heated；
S2, judge whether air-conditioning meets pre- defrost condition, if satisfied, then entering the pre- defrost stage；
S3, air-conditioning are by the preset temperature T of heatingIt is defaultBecome pre- defrost preset temperature TPre- defrost, with TPre- defrostContinue to heat；
S4, judge whether air-conditioning meets defrost condition, if satisfied, then entering the defrost stage, if not satisfied, then continuing pre-ization
White process；
S5, air-conditioning carry out defrost, and judge whether to meet defrost termination condition, if satisfied, then terminating defrost process, if discontented
Foot, then continue defrost.
2. a kind of intelligent defrosting method of convertible frequency air-conditioner as described in claim 1, which is characterized in that in step s 2, described
Pre- defrost condition includes:
TExternal disk≤T1；
TOuter ring-TExternal disk≥△T1；
Compressor accumulated running time >=t1, continuous operating time >=t2；
TInner disc-TInner ring< △ T2；In at least one condition；
Wherein, TExternal diskFor outdoor coil temperature, TOuter ringFor outdoor environment temperature, TInner discFor indoor coil pipe, TInner ringFor indoor environment
Temperature, T1 are outdoor coil pipe used preset temperature, and △ T1 is that the first rated temperature is poor, and △ T2 is that the second rated temperature is poor, t1 first
Preset duration, t2 are the second preset duration.
3. a kind of intelligent defrosting method of convertible frequency air-conditioner as claimed in claim 2, which is characterized in that in step s 2, air-conditioning
Meet following defrost condition for the moment, then start pre- defrost:
Defrost condition one: while entering pre- defrost when meeting the following conditions:
TExternal disk≤-3℃；
TOuter ring-TExternal diskMeet lower surface condition:
Compressor accumulated running time >=45min, continuous operating time >=5min；
TInner disc-TInner ring17 DEG C of <；
Defrost condition two: while entering pre- defrost when meeting the following conditions:
TExternal disk≤-3℃；
TOuter ring-TExternal diskMeet lower surface condition:
Compressor accumulated running time >=180min, continuous operating time >=5min.
4. a kind of intelligent defrosting method of convertible frequency air-conditioner as described in claim 1, which is characterized in that in step s 4, described
Defrost condition includes:
Pre- defrost time >=t3；
TInner ring-TSetting>=△ T3, and continue t4；In at least one condition；
Wherein, t3 is third preset duration, TInner ringFor indoor environment temperature, TSettingFor the preset temperature of heating, △ T3 is third volume
Determine temperature difference, t4 is the 4th preset duration.
5. a kind of intelligent defrosting method of convertible frequency air-conditioner as claimed in claim 4, which is characterized in that in step s 4, air-conditioning
Enter defrost after meeting following either condition:
Pre- defrost time >=10min；
TInner ring-TSetting>=2 DEG C, continue 10s.
6. a kind of intelligent defrosting method of convertible frequency air-conditioner as described in claim 1, which is characterized in that in step s 5, described
Defrost termination condition includes:
The defrost time >=t5；
TExternal disk>=T2 simultaneously continues t6 or more；In at least one condition；
Wherein, TExternal diskFor outdoor coil temperature, T2 is outdoor coil pipe used rated temperature, and t5 is the 5th preset duration, and t6 is the 6th default
Duration.
7. a kind of intelligent defrosting method of convertible frequency air-conditioner as claimed in claim 6, which is characterized in that in step s 5, air-conditioning
Defrost is exited for the moment meeting the following conditions:
Defrost exit criteria one: defrost time >=9min；
Defrost exit criteria two: after defrost carries out 2min, if TExternal disk>=8 DEG C and continue 60S or more；
Defrost exit criteria three: after defrost carries out 2min, if TExternal disk>=12 DEG C and continue 10S or more.
8. a kind of convertible frequency air-conditioner, which is characterized in that using the intelligent defrosting side of the described in any item convertible frequency air-conditioners of claim 1-7
Method, the convertible frequency air-conditioner include:
Indoor coil pipe sensor is arranged in convertible frequency air-conditioner indoor unit internal coil, to detect indoor coil pipe
TInner disc；
Indoor environment temperature sensor is arranged on convertible frequency air-conditioner indoor unit outer wall, to detect indoor environment temperature TInner ring；
Outdoor environment temperature sensor is arranged in frequency-variable air conditioner outdoor machine air inlet, to detect outdoor environment temperature TOuter ring；
Outdoor coil temperature sensor is arranged in frequency-variable air conditioner outdoor machine internal coil, to detect outdoor coil temperature
TExternal disk；
Central processing module is arranged inside convertible frequency air-conditioner indoor unit, to handle the data of convertible frequency air-conditioner intelligent defrosting process
Information, the central processing module respectively with indoor coil pipe sensor, indoor environment temperature sensor, outdoor environment temperature
Transducer room, the connection of outer coil temperature sensor, for handling the relevant temperature information of defrost；
Compressor opens and closes unit, is arranged on compressor of air conditioner, and compressor opening and closing unit is connect with central processing module, for holding
Row compressor opens or closes movement；
Indoor fan opens and closes unit, is arranged on air-conditioning indoor fan, and indoor fan opening and closing unit is connect with central processing module,
Movement is opened or closed for execute air-conditioning indoor fan；
Outdoor fan opens and closes unit, is arranged on outdoor fan of air-conditioner, and outdoor fan opening and closing unit is connect with central processing module,
Movement is opened or closed for execute outdoor fan of air-conditioner；
Four-way valve is motor-driven valve, connect with central processing module；
Data storage cell is arranged inside convertible frequency air-conditioner indoor unit, and data storage cell is connect with central processing module, is used for
Store the relevant information of convertible frequency air-conditioner.
9. a kind of convertible frequency air-conditioner as claimed in claim 8, which is characterized in that the central processing module includes:
Data processing unit, for handling the data information during convertible frequency air-conditioner intelligent defrosting；
Timing unit, for handling the runing time during intelligent defrosting.
10. a kind of convertible frequency air-conditioner as claimed in claim 8, which is characterized in that the execution of the convertible frequency air-conditioner defrost movement
Journey:
After pre- defrost, central processing module controls compressor opening and closing unit, indoor fan opening and closing unit and outdoor respectively
Blower opens and closes unit, closes to compressor of air conditioner, air-conditioning indoor fan and outdoor fan of air-conditioner, central processing mould after 25s
Block controls four-way valve and closes, and central processing module opens and closes unit by compressor and opens compressor of air conditioner after 5s, into change
Frost operation；
When defrost terminates to exit, central processing module opens and closes unit by compressor and closes compressor of air conditioner, passes through outdoor fan
It opens and closes unit and opens outdoor fan of air-conditioner, central processing module control four-way valve is opened after 25s, the central processing module after 5s
Unit is opened and closed by compressor and opens compressor of air conditioner, and air-conditioning restores normal heating operation, and air-conditioning indoor fan is transported by anti-cold wind
Row.
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| CN110469959A (en) * | 2019-07-24 | 2019-11-19 | 青岛海尔空调器有限总公司 | For the control method of air-conditioner defrosting, device and air-conditioning |
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