CN105042786A - Dehumidifier and method and device for controlling dehumidifier - Google Patents
Dehumidifier and method and device for controlling dehumidifier Download PDFInfo
- Publication number
- CN105042786A CN105042786A CN201510465073.2A CN201510465073A CN105042786A CN 105042786 A CN105042786 A CN 105042786A CN 201510465073 A CN201510465073 A CN 201510465073A CN 105042786 A CN105042786 A CN 105042786A
- Authority
- CN
- China
- Prior art keywords
- dehumidifier
- temperature
- defrost
- indoor environment
- changing value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- 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
- F24F2110/00—Control inputs relating to air properties
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a method for controlling a dehumidifier. The method comprises the steps of calculating the ambient air dew point temperature according to the indoor environment relative humidity and the indoor environment temperature after the dehumidifier is started to operate; judging that the dehumidifier goes into the frosting operation mode when the ambient air dew point temperature is lower than a first preset temperature; acquiring the indoor environment temperature change value and the compressor running current change value to judge whether to control the dehumidifier to go into the defrosting operation mode; judging whether to control the dehumidifier to quit the defrosting operation mode according to defrosting time and the tube temperature of an evaporator after the dehumidifier goes into the defrosting operation mode. By the adoption of the method, the dehumidifier can be controlled to conduct defrosting when the dehumidification amount is maximized, the dehumidification capacity of the dehumidifier is improved, and dehumidification effect is improved. The invention further discloses a device for controlling the dehumidifier and a dehumidifier.
Description
Technical field
The present invention relates to dehumidifier technical field, particularly a kind of control method of dehumidifier, a kind of control device of dehumidifier and a kind of dehumidifier.
Background technology
The current dehumidifier product scope of application is more and more wider, and wherein, in some areas of the high latitude such as Europe, North America, dehumidifier many places are under the operating mode (there will be the operating mode of defrost) of middle low temperature.Due to the air dew point temperature under middle worst cold case close to zero degree even lower than zero degree, after dehumidifier runs a period of time, evaporator surface is easy to frosting and forms ice, now needs to perform defrost action.
The defrosting method of existing dehumidifier is a lot, but normally judge that dehumidifier is the need of defrosting according to the pipe temperature of evaporimeter, and the Guan Wen of evaporimeter only can judge that the Guan Wen of evaporimeter is below 0 DEG C, there will be the situation of frosting, and just perform defrost action after a preset amount of time, therefore, when accurately can not detect dehumidifier moisture removal reaches maximum under frozen condition, thus be easy to occur that the moisture removal of dehumidifier decayed after a period of time and just enter defrost, be unfavorable for that moisture removal maximizes, and then reduce effect on moisture extraction.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, one object of the present invention is to propose a kind of control method that can control the dehumidifier of dehumidifier execution defrost action when moisture removal reaches maximum.
Another object of the present invention is the control device proposing a kind of dehumidifier.Another object of the present invention is to propose a kind of dehumidifier.
For achieving the above object, one aspect of the present invention embodiment proposes a kind of control method of dehumidifier, comprise the following steps: after dehumidifier start runs, detect pipe temperature T2 and the compressor operating electric current A of evaporimeter in indoor environment temperature T1, indoor environment relative humidity RH, described dehumidifier, and according to described indoor environment relative humidity RH and described indoor environment temperature T1 computing environment air dew point temperature Td; When described surrounding air dew-point temperature Td is less than the first preset temperature, judge that described dehumidifier enters frosting operating condition; Obtain the changing value △ A of described indoor environment temperature changing value △ T1 and described compressor operating electric current in the first Preset Time, and judge whether that controlling described dehumidifier enters defrost operating condition according to the changing value △ A of described indoor environment temperature changing value △ T1 and described compressor operating electric current; After described dehumidifier enters defrost operating condition, the pipe temperature T2 according to defrost time and described evaporimeter judges whether that controlling described dehumidifier exits described defrost operating condition.
According to the control method of the dehumidifier of the embodiment of the present invention, after dehumidifier start runs, detect indoor environment temperature T1, indoor environment relative humidity RH, the pipe temperature T2 of evaporimeter and compressor operating electric current A in dehumidifier, and according to indoor environment relative humidity RH and indoor environment temperature T1 computing environment air dew point temperature Td, when surrounding air dew-point temperature Td is less than the first preset temperature, judge that dehumidifier enters frosting operating condition, obtain the changing value △ A of indoor environment temperature changing value △ T1 and compressor operating electric current in the first Preset Time, and judge whether that controlling dehumidifier enters defrost operating condition according to the changing value △ A of indoor environment temperature changing value △ T1 and compressor operating electric current, after dehumidifier enters defrost operating condition, pipe temperature T2 according to defrost time and evaporimeter judges whether that controlling dehumidifier exits defrost operating condition.Therefore, by the changing value of indoor environment temperature changing value and compressor operating electric current, the control method of the dehumidifier of the embodiment of the present invention accurately judges whether the moisture removal of dehumidifier reaches maximum, and control dehumidifier enters defrost operating condition when moisture removal reaches maximum, effectively improve the moisture removal of dehumidifier in the single cycle of operation, thus effectively improve the effect on moisture extraction of dehumidifier, reach energy-conservation effect simultaneously.
According to one embodiment of present invention, when described indoor environment temperature changing value △ T1 is less than or equal to default temperature threshold and the changing value △ A of described compressor operating electric current is less than or equal to default current threshold, controls described dehumidifier and enter defrost operating condition; When the described defrost time be greater than the second Preset Time and the pipe temperature T2 of described evaporimeter is greater than the second preset temperature time, or when the described defrost time is greater than the 3rd Preset Time, control described dehumidifier and exit described defrost operating condition, wherein, described 3rd Preset Time is greater than described second Preset Time.
According to one embodiment of present invention, when described indoor environment temperature changing value △ T1 is less than or equal to described default temperature threshold and the changing value △ A of described compressor operating electric current is less than or equal to described default current threshold, also controls described dehumidifier again after time delay the 4th Preset Time and enter described defrost operating condition.
According to one embodiment of present invention, after described dehumidifier enters described defrost operating condition, control compressor and quit work, keep blower fan to continue to run, and the meter record defrost time.
For achieving the above object, the present invention on the other hand embodiment proposes a kind of control device of dehumidifier, comprise the first temperature detecting unit, humidity detection unit, second temperature detecting unit, current detecting unit and control unit, wherein, after dehumidifier start runs, described first temperature detecting unit detects indoor environment temperature T1, described humidity detection unit sensing chamber environment relative humidity RH, described second temperature detecting unit detects the pipe temperature T2 of evaporimeter in described dehumidifier, described current detecting unit detects compressor operating electric current A, and described control unit is according to described indoor environment relative humidity RH and described indoor environment temperature T1 computing environment air dew point temperature Td, when described surrounding air dew-point temperature Td is less than the first preset temperature, described control unit judges that described dehumidifier enters frosting operating condition, according to the changing value △ A of described indoor environment temperature changing value △ T1 and described compressor operating electric current, described control unit also for obtaining the changing value △ A of described indoor environment temperature changing value △ T1 and described compressor operating electric current in the first Preset Time, and judges whether that controlling described dehumidifier enters defrost operating condition, after described dehumidifier enters defrost operating condition, according to the pipe temperature T2 of defrost time and described evaporimeter, described control unit also judges whether that controlling described dehumidifier exits described defrost operating condition.
According to the control device of the dehumidifier of the embodiment of the present invention, after dehumidifier start runs, first temperature detecting unit detects indoor environment temperature T1, humidity detection unit sensing chamber environment relative humidity RH, second temperature detecting unit detects the pipe temperature T2 of evaporimeter in dehumidifier, current detecting unit detects compressor operating electric current A, and control unit is according to indoor environment relative humidity RH and indoor environment temperature T1 computing environment air dew point temperature Td, when surrounding air dew-point temperature Td is less than the first preset temperature, control unit judges that dehumidifier enters frosting operating condition, control unit obtains the changing value △ A of indoor environment temperature changing value △ T1 and compressor operating electric current in the first Preset Time, and judge whether that controlling dehumidifier enters defrost operating condition according to the changing value △ A of indoor environment temperature changing value △ T1 and compressor operating electric current, after dehumidifier enters defrost operating condition, according to the pipe temperature T2 of defrost time and evaporimeter, control unit also judges whether that controlling dehumidifier exits defrost operating condition.Therefore, by the changing value of indoor environment temperature changing value and compressor operating electric current, the control device of the dehumidifier of the embodiment of the present invention accurately judges whether the moisture removal of dehumidifier reaches maximum, and control dehumidifier enters defrost operating condition when moisture removal reaches maximum, effectively improve the moisture removal of dehumidifier in the single cycle of operation, thus effectively improve the effect on moisture extraction of dehumidifier, reach energy-conservation effect simultaneously.
According to one embodiment of present invention, when described indoor environment temperature changing value △ T1 is less than or equal to default temperature threshold and the changing value △ A of described compressor operating electric current is less than or equal to default current threshold, described control unit controls described dehumidifier and enters defrost operating condition; When the described defrost time be greater than the second Preset Time and the pipe temperature T2 of described evaporimeter is greater than the second preset temperature time, or when the described defrost time is greater than the 3rd Preset Time, described control unit controls described dehumidifier and exits described defrost operating condition, wherein, described 3rd Preset Time is greater than described second Preset Time.
According to one embodiment of present invention, when described indoor environment temperature changing value △ T1 is less than or equal to described default temperature threshold and the changing value △ A of described compressor operating electric current is less than or equal to described default current threshold, described control unit also controls described dehumidifier again and enters described defrost operating condition after time delay the 4th Preset Time.
According to one embodiment of present invention, after described dehumidifier enters described defrost operating condition, described control unit controls compressor and quits work, and keeps blower fan to continue to run, and records the defrost time.
In addition, embodiments of the invention also proposed a kind of dehumidifier, and it comprises the control device of above-mentioned dehumidifier.
This dehumidifier is by the control device of above-mentioned dehumidifier, can accurately judge whether the moisture removal of dehumidifier reaches maximum by the changing value of indoor environment temperature changing value and compressor operating electric current, and control dehumidifier enters defrost operating condition when moisture removal reaches maximum, effectively improve the moisture removal of dehumidifier in the single cycle of operation, thus effectively improve the effect on moisture extraction of dehumidifier, reach energy-conservation effect simultaneously.
Accompanying drawing explanation
Fig. 1 is the flow chart of the control method of dehumidifier according to the embodiment of the present invention.
Fig. 2 is the control flow chart of dehumidifier according to an embodiment of the invention.
Fig. 3 is the block diagram of the control device of dehumidifier according to the embodiment of the present invention.
Reference numeral: the first temperature detecting unit 10, humidity detection unit 20, second temperature detecting unit 30, current detecting unit 40 and control unit 50.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
The control method of dehumidifier, the control device of dehumidifier and the dehumidifier that propose according to the embodiment of the present invention are described with reference to the accompanying drawings.
Fig. 1 is the flow chart of the control method of dehumidifier according to the embodiment of the present invention.As shown in Figure 1, the control method of this dehumidifier comprises the following steps:
S1, after dehumidifier start runs, detect pipe temperature T2 and the compressor operating electric current A of evaporimeter in indoor environment temperature T1, indoor environment relative humidity RH, dehumidifier, and according to indoor environment relative humidity RH and indoor environment temperature T1 computing environment air dew point temperature Td.
S2, when surrounding air dew-point temperature Td is less than the first preset temperature, judges that dehumidifier enters frosting operating condition.
Specifically, first preset temperature can set according to the difference of evaporator surface temperature and surrounding air dew-point temperature, such as, the evaporator surface temperature of dehumidifier and the difference of surrounding air dew-point temperature are about 10 DEG C under normal circumstances, if surrounding air dew-point temperature Td is less than 10 DEG C, then can judge that evaporator surface temperature is less than 0 DEG C, thus judge that dehumidifier enters frosting operating condition.In addition, in order to reduce Acquisition Error, ensure that dehumidifier is reliable, can compensate the first preset temperature, such as, the first preset temperature can be 12 DEG C.
That is, after dehumidifier start runs, can be judged by the surrounding air dew-point temperature Td calculated in real time whether dehumidifier enters frosting operating condition, when surrounding air dew-point temperature Td is less than 12 DEG C, judge that dehumidifier enters frosting operating condition.
S3, obtain the changing value △ A of indoor environment temperature changing value △ T1 and compressor operating electric current in the first Preset Time, and judge whether that controlling dehumidifier enters defrost operating condition according to the changing value △ A of indoor environment temperature changing value △ T1 and compressor operating electric current.Wherein, first Preset Time can be demarcated according to actual conditions, such as, first Preset Time can be 2min, then now indoor environment temperature changing value △ T1=T0-T02, T0 are current indoor environment temperature, T02 is the indoor environment temperature before 2min, the changing value △ A=A2-A1 of compressor operating electric current, A2 is current compressor running current, and A1 is the compressor operating electric current before 2min.
It should be noted that, when the change of compressor operating electric current runs with dehumidifier, the variation tendency of moisture removal is consistent, under the condition that environmental working condition is constant, when compressor operating electric current declines, illustrate that the evaporimeter frosting of dehumidifier is thicker, now the moisture removal of dehumidifier starts decay.
Specifically, usually, when dehumidifier runs under middle worst cold case, the evaporimeter of dehumidifier all can frosting, along with the increase of running time, frost can be tied thicker and thicker, and when after operation a period of time, the frost of evaporator surface can increase heat exchange thermal resistance, make the heat exchange of evaporator surface and surrounding air more and more less, now, the frost of evaporator surface also substantially no longer increases, or increase is few.Find by measuring, now the moisture removal of dehumidifier can decay, and simultaneously the power of compressor and electric current also can reduce thereupon.That is, under the condition that environmental working condition is constant, when dehumidifier runs under middle worst cold case, it is a curve that the moisture removal of dehumidifier changes in time, namely the moisture removal of dehumidifier arrives low from low to high again, and the curent change of compressor be also arrive again from low to high low, and variation tendency is consistent with the moisture removal of dehumidifier, namely the hump (peak value) of the moisture removal of dehumidifier and the hump (peak value) of compressor operating electric current are identical in time.Therefore, can judge whether the moisture removal of dehumidifier reaches maximum by the judgement of the changing value to compressor operating electric current, dehumidifier can be controlled in time enter defrost operating condition when the moisture removal of dehumidifier reaches maximum, reduce the running time after moisture removal decay, thus promote the moisture removal of the single cycle of operation, and then the moisture removal that lifting dehumidifier runs under middle worst cold case, reach the effect that moisture removal is maximum.
In addition, be understandable that, while judging compressor operating curent change, also the change of indoor environment temperature is judged, reason is, when indoor environment temperature reduces, compressor operating electric current also can decline thereupon, now cannot judge that the compressor operating electric current caused due to evaporimeter frosting declines, or because indoor environment temperature declines the decline of the compressor operating electric current caused, therefore, in an embodiment of the present invention, also indoor environment temperature is judged, to ensure under the condition that environmental working condition is constant, judge whether dehumidifier enters defrost operating condition according to compressor operating electric current, thus effectively avoid dehumidifier to enter defrost operating condition because of erroneous judgement.
According to one embodiment of present invention, when indoor environment temperature changing value △ T1 is less than or equal to default temperature threshold and the changing value △ A of compressor operating electric current is less than or equal to default current threshold, controls dehumidifier and enter defrost operating condition.Wherein, the temperature threshold preset and current threshold can be demarcated according to actual conditions, and such as, temperature threshold can be-4 DEG C, and current threshold can be-0.2A.
According to one embodiment of present invention, when indoor environment temperature changing value △ T1 is less than or equal to default temperature threshold and the changing value △ A of compressor operating electric current is less than or equal to default current threshold, also control dehumidifier again after time delay the 4th Preset Time and enter defrost operating condition, more accurate to make the maximum of moisture removal judge.Wherein, the 4th Preset Time can be demarcated according to actual conditions, and such as, the 4th Preset Time can be 20s.Certainly, also after control dehumidifier enters defrost operating condition, after time delay the 4th Preset Time, defrost action can be performed again.
According to one embodiment of present invention, after dehumidifier enters defrost operating condition, control compressor and quit work, keep blower fan to continue to run, and record the defrost time.
S4, after dehumidifier enters defrost operating condition, the pipe temperature T2 according to defrost time and evaporimeter judges whether that controlling dehumidifier exits defrost operating condition.
According to one embodiment of present invention, when the defrost time be greater than the second Preset Time and the pipe temperature T2 of evaporimeter is greater than the second preset temperature time, or when the defrost time is greater than the 3rd Preset Time, control dehumidifier and exit defrost operating condition, wherein, 3rd Preset Time is greater than the second Preset Time, second preset temperature, the second Preset Time and the 3rd Preset Time can be demarcated according to actual conditions, such as the second preset temperature can be 3 DEG C, second Preset Time can be 3min, and the 3rd Preset Time can be 14min.
It should be noted that, be greater than the 3rd Preset Time be as 14min controls the object that dehumidifier exits defrost operating condition by the defrost time, when ensureing evaporimeter fault, dehumidifier still can normally run.
According to a concrete example of the present invention, after the normal operation of dehumidifier start, continue to detect indoor environment temperature T1, indoor environment relative humidity RH and compressor operating electric current A, suppose the indoor environment temperature T1=15 DEG C of current detection, and the indoor environment relative humidity RH=60% detected, then surrounding air dew-point temperature Td=7.3 DEG C, because now surrounding air dew-point temperature Td is less than 12 DEG C, then judges that dehumidifier enters frosting operating condition.
After dehumidifier enters frosting operating condition, the current compressor running current A2=3.3A detected, and the compressor operating electric current A1=3.6A before 2min, the then changing value △ A=A2-A1=-0.3A of compressor operating electric current, simultaneously, the current indoor environment temperature T0=15.2 DEG C detected, and the indoor environment temperature T02=17 DEG C before 2min, then indoor environment temperature changing value △ T1=T0-T02=-1.8 DEG C.Because the changing value △ A of now compressor operating electric current is less than-0.2A, and indoor environment temperature changing value △ T1 is less than-4 DEG C, then control dehumidifier and enter defrost operating condition.
After control dehumidifier enters defrost operating condition, after time delay 20s, control compressor and quit work, keep blower fan to continue to run, and record the defrost time.4min is reached and the pipe temperature T2=5 DEG C of the evaporimeter detected when the defrost time, meet and exit the pre-conditioned of defrost operating condition, namely the defrost time is greater than 3min and the pipe temperature T2 of evaporimeter is greater than 3 DEG C, then control dehumidifier and exit defrost operating condition, now, compressor restarts, and returns to normal operating condition.
Further, as shown in Figure 2, the control procedure of dehumidifier comprises the following steps:
S101, dehumidifier is started shooting.
S102, the pipe temperature T2 of detection indoor environment temperature T1, indoor environment relative humidity RH, evaporimeter and compressor operating electric current A.
S103, according to T1, RH computing environment air dew point temperature Td.
S104, judges whether Td is less than 12 DEG C.If so, step S105 is performed; If not, step S102 is returned.
S105, continues the compressor operating electric current before detecting current compressor running current A1,2min, and calculates the changing value △ A=A2-A1 of compressor operating electric current.
S106, continues the indoor environment temperature T02 before detecting current indoor environment temperature T0 and 2min, and counting chamber environment temperature change value △ T=T0-T02.
S107, judges whether △ A is less than or equal to-0.2A and whether △ T is less than or equal to-4 DEG C.If so, step S108 is performed; If not, step S102 is returned.
S108, time delay 20s perform defrost action.
S109, compressor shutdown, blower fan continues to run, and starts execution defrost action timing t.
S110, judge whether t is greater than 3min and whether T2 is greater than 3 DEG C, or whether t is greater than 14min.If so, step S111 is performed; If not, step S109 is returned.
S111, exits defrost, compressor start, and this defrost periods terminates.
S112, judges whether that shutdown or other pattern switch.If so, step S113 is performed; If not, step S102 is returned.
S113, switch mode or shutdown.
In sum, according to the control method of the dehumidifier of the embodiment of the present invention, after dehumidifier start runs, detect indoor environment temperature T1, indoor environment relative humidity RH, the pipe temperature T2 of evaporimeter and compressor operating electric current A in dehumidifier, and according to indoor environment relative humidity RH and indoor environment temperature T1 computing environment air dew point temperature Td, when surrounding air dew-point temperature Td is less than the first preset temperature, judge that dehumidifier enters frosting operating condition, obtain the changing value △ A of indoor environment temperature changing value △ T1 and compressor operating electric current in the first Preset Time, and judge whether that controlling dehumidifier enters defrost operating condition according to the changing value △ A of indoor environment temperature changing value △ T1 and compressor operating electric current, after dehumidifier enters defrost operating condition, pipe temperature T2 according to defrost time and evaporimeter judges whether that controlling dehumidifier exits defrost operating condition.Therefore, by the changing value of indoor environment temperature changing value and compressor operating electric current, the control method of the dehumidifier of the embodiment of the present invention can accurately judge whether the moisture removal of dehumidifier reaches maximum, and control dehumidifier enters defrost operating condition when moisture removal reaches maximum, effectively improve the moisture removal of dehumidifier in the single cycle of operation, thus effectively improve the effect on moisture extraction of dehumidifier, reach energy-conservation effect simultaneously.
Fig. 3 is the block diagram of the control device of dehumidifier according to the embodiment of the present invention.As shown in Figure 3, the control device of this dehumidifier comprises: the first temperature detecting unit 10, humidity detection unit 20, second temperature detecting unit 30, current detecting unit 40 and control unit 50.
Wherein, after dehumidifier start runs, first temperature detecting unit 10 detects indoor environment temperature T1, humidity detection unit 20 sensing chamber environment relative humidity RH, the pipe temperature T2 of evaporimeter in second temperature detection 30 unit inspection dehumidifier, current detecting unit 40 detects compressor operating electric current A, and control unit 50 is according to indoor environment relative humidity RH and indoor environment temperature T1 computing environment air dew point temperature Td.When surrounding air dew-point temperature Td is less than the first preset temperature, control unit 50 judges that dehumidifier enters frosting operating condition, control unit 50 is also for obtaining the changing value △ A of indoor environment temperature changing value △ T1 and compressor operating electric current in the first Preset Time, and judge whether that controlling dehumidifier enters defrost operating condition according to the changing value △ A of indoor environment temperature changing value △ T1 and compressor operating electric current, after dehumidifier enters defrost operating condition, according to the pipe temperature T2 of defrost time and evaporimeter, control unit 50 also judges whether that controlling dehumidifier exits defrost operating condition.
It should be noted that, when the change of compressor operating electric current runs with dehumidifier, the variation tendency of moisture removal is consistent, under the condition that environmental working condition is constant, when compressor operating electric current declines, illustrate that the evaporimeter frosting of dehumidifier is thicker, now the moisture removal of dehumidifier starts decay.
Specifically, usually, when dehumidifier (there will be the operating mode of defrost) and runs under middle worst cold case, the evaporimeter of dehumidifier all can frosting, along with the increase of running time, frost can be tied thicker and thicker, and when after operation a period of time, the frost of evaporator surface can increase heat exchange thermal resistance, make the heat exchange of evaporator surface and surrounding air more and more less, now, the frost of evaporator surface also substantially no longer increases, or increase is few.Find by measuring, now the moisture removal of dehumidifier can decay, and simultaneously the power of compressor and electric current also can reduce thereupon.That is, under the condition that environmental working condition is constant, when dehumidifier runs under middle worst cold case, it is a curve that the moisture removal of dehumidifier changes in time, namely the moisture removal of dehumidifier arrives low from low to high again, and the curent change of compressor be also arrive again from low to high low, and variation tendency is consistent with the moisture removal of dehumidifier, namely the hump (peak value) of the moisture removal of dehumidifier and the hump (peak value) of compressor operating electric current are identical in time.Therefore, can judge whether the moisture removal of dehumidifier reaches maximum by the judgement of the changing value to compressor operating electric current, dehumidifier can be controlled in time enter defrost operating condition when the moisture removal of dehumidifier reaches maximum, reduce the running time after moisture removal decay, thus promote the moisture removal of the single cycle of operation, and then the moisture removal that lifting dehumidifier runs under middle worst cold case, reach the effect that moisture removal is maximum.
In addition, be understandable that, while judging compressor operating curent change, also the change of indoor environment temperature is judged, reason is, when indoor environment temperature reduces, compressor operating electric current also can decline thereupon, now cannot judge that the compressor operating electric current caused due to evaporimeter frosting declines, or because indoor environment temperature declines the decline of the compressor operating electric current caused, therefore, in an embodiment of the present invention, also indoor environment temperature is judged, to ensure under the condition that environmental working condition is constant, judge whether dehumidifier enters defrost operating condition according to compressor operating electric current, thus effectively avoid dehumidifier to enter defrost operating condition because of erroneous judgement.
According to one embodiment of present invention, when indoor environment temperature changing value △ T1 is less than or equal to default temperature threshold and the changing value △ A of compressor operating electric current is less than or equal to default current threshold, control unit 50 controls dehumidifier and enters defrost operating condition; When the defrost time be greater than the second Preset Time and the pipe temperature T2 of evaporimeter is greater than the second preset temperature time, or when the defrost time is greater than the 3rd Preset Time, control unit 50 controls dehumidifier and exits defrost operating condition, and the 3rd Preset Time is greater than the second Preset Time.Wherein, temperature threshold can be-4 DEG C, and current threshold can be-0.2A, and the second preset temperature can be 3 DEG C, and the second Preset Time can be 3min, and the 3rd Preset Time can be 14min.
It should be noted that, be greater than the 3rd Preset Time be as 14min controls the object that dehumidifier exits defrost operating condition afterwards by the defrost time, when ensureing evaporimeter fault, dehumidifier still can normally run.
Particularly, first preset temperature can set according to the difference of evaporator surface temperature and surrounding air dew-point temperature, such as, the evaporator surface temperature of dehumidifier and the difference of surrounding air dew-point temperature are about 10 DEG C under normal circumstances, if surrounding air dew-point temperature Td is less than 10 DEG C, then control unit 50 can judge that evaporator surface temperature is less than 0 DEG C, thus judges that dehumidifier enters frosting operating condition.In addition, in order to reduce Acquisition Error, ensure that dehumidifier is reliable, can compensate the first preset temperature, such as, the first preset temperature can be 12 DEG C.
That is, after dehumidifier start runs, control unit 50 can judge by the surrounding air dew-point temperature Td calculated in real time whether dehumidifier enters frosting operating condition, when surrounding air dew-point temperature Td is less than 12 DEG C, control unit 50 judges that dehumidifier enters frosting operating condition, and start the changing value △ A of Real-time Obtaining first Preset Time as indoor environment temperature changing value △ T1 and compressor operating electric current in 2min, and both are judged, if indoor environment temperature changing value △ T1 is less than or equal to default temperature threshold as-4 DEG C and the changing value △ A of compressor operating electric current is less than or equal to default current threshold as-0.2A, control unit 50 control dehumidifiers enter defrost operating condition.Wherein, indoor environment temperature changing value △ T1=T0-T02, T0 is current indoor environment temperature, and T02 is the indoor environment temperature before 2min; The changing value △ A=A2-A1 of compressor operating electric current, A2 is current compressor running current, and A1 is the compressor operating electric current before 2min.
According to one embodiment of present invention, when indoor environment temperature changing value △ T1 is less than or equal to default temperature threshold and the changing value △ A of compressor operating electric current is less than or equal to default current threshold, control unit 50 also controls dehumidifier again and enters defrost operating condition after time delay the 4th Preset Time.Such as, the 4th Preset Time can be 20s.Certainly, also after control dehumidifier enters defrost operating condition, after time delay the 4th Preset Time, defrost action can be performed again.
According to one embodiment of present invention, after dehumidifier enters defrost operating condition, control unit 50 controls compressor and quits work, and keeps blower fan to continue to run, and records the defrost time.
According to a concrete example of the present invention, after the normal operation of dehumidifier start, continue to detect indoor environment temperature T1, indoor environment relative humidity RH and compressor operating electric current A, suppose the indoor environment temperature T1=15 DEG C of current detection, and the indoor environment relative humidity RH=60% detected, the then surrounding air dew-point temperature Td=7.3 DEG C of control unit 50 calculating, because now surrounding air dew-point temperature Td is less than 12 DEG C, then control unit 50 judges that dehumidifier enters frosting operating condition.
After dehumidifier enters frosting operating condition, the current compressor running current A2=3.3A detected, and the compressor operating electric current A1=3.6A before 2min, the then changing value △ A=A2-A1=-0.3A of the compressor operating electric current of control unit 50 calculating, simultaneously, the current indoor environment temperature T0=15.2 DEG C detected, and the indoor environment temperature T02=17 DEG C before 2min, then the indoor environment temperature changing value △ T1=T0-T02=-1.8 DEG C of control unit 50 calculating.Because the changing value △ A of now compressor operating electric current is less than-0.2A, and indoor environment temperature changing value △ T1 is less than-4 DEG C, then control unit 50 controls dehumidifier and enters defrost operating condition.
After control dehumidifier enters defrost operating condition, after time delay 20s, control unit 50 controls compressor and quits work, and keeps blower fan to continue to run, and records the defrost time.4min is reached and the pipe temperature T2=5 DEG C of the evaporimeter detected when the defrost time, meet and exit the pre-conditioned of defrost operating condition, namely the defrost time is greater than 3min and the pipe temperature T2 of evaporimeter is greater than 3 DEG C, then control unit 50 controls dehumidifier and exits defrost operating condition, now, control unit 50 controls compressor and restarts, and returns to normal operating condition.
According to the control device of the dehumidifier of the embodiment of the present invention, after dehumidifier start runs, first temperature detecting unit detects indoor environment temperature T1, humidity detection unit sensing chamber environment relative humidity RH, second temperature detecting unit detects the pipe temperature T2 of evaporimeter in dehumidifier, current detecting unit detects compressor operating electric current A, and control unit is according to indoor environment relative humidity RH and indoor environment temperature T1 computing environment air dew point temperature Td, when surrounding air dew-point temperature Td is less than the first preset temperature, control unit judges that dehumidifier enters frosting operating condition, control unit obtains the changing value △ A of indoor environment temperature changing value △ T1 and compressor operating electric current in the first Preset Time, and judge whether that controlling dehumidifier enters defrost operating condition according to the changing value △ A of indoor environment temperature changing value △ T1 and compressor operating electric current, after dehumidifier enters defrost operating condition, according to the pipe temperature T2 of defrost time and evaporimeter, control unit also judges whether that controlling dehumidifier exits defrost operating condition.Therefore, by the changing value of indoor environment temperature changing value and compressor operating electric current, the control device of the dehumidifier of the embodiment of the present invention can accurately judge whether the moisture removal of dehumidifier reaches maximum, and control dehumidifier enters defrost operating condition when moisture removal reaches maximum, effectively improve the moisture removal of dehumidifier in the single cycle of operation, thus effectively improve the effect on moisture extraction of dehumidifier, reach energy-conservation effect simultaneously.
In addition, embodiments of the invention also proposed a kind of dehumidifier, and it comprises the control device of above-mentioned dehumidifier.
This dehumidifier is by the control device of above-mentioned dehumidifier, can accurately judge whether the moisture removal of dehumidifier reaches maximum by the changing value of indoor environment temperature changing value and compressor operating electric current, and control dehumidifier enters defrost operating condition when moisture removal reaches maximum, effectively improve the moisture removal of dehumidifier in the single cycle of operation, thus effectively improve the effect on moisture extraction of dehumidifier, reach energy-conservation effect simultaneously.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In describing the invention, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this description or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (9)
1. a control method for dehumidifier, is characterized in that, comprises the following steps:
After dehumidifier start runs, detect pipe temperature T2 and the compressor operating electric current A of evaporimeter in indoor environment temperature T1, indoor environment relative humidity RH, described dehumidifier, and according to described indoor environment relative humidity RH and described indoor environment temperature T1 computing environment air dew point temperature Td;
When described surrounding air dew-point temperature Td is less than the first preset temperature, judge that described dehumidifier enters frosting operating condition;
Obtain the changing value △ A of described indoor environment temperature changing value △ T1 and described compressor operating electric current in the first Preset Time, and judge whether that controlling described dehumidifier enters defrost operating condition according to the changing value △ A of described indoor environment temperature changing value △ T1 and described compressor operating electric current;
After described dehumidifier enters defrost operating condition, the pipe temperature T2 according to defrost time and described evaporimeter judges whether that controlling described dehumidifier exits described defrost operating condition.
2. the control method of dehumidifier according to claim 1, is characterized in that,
When described indoor environment temperature changing value △ T1 is less than or equal to default temperature threshold and the changing value △ A of described compressor operating electric current is less than or equal to default current threshold, controls described dehumidifier and enter defrost operating condition;
When the described defrost time be greater than the second Preset Time and the pipe temperature T2 of described evaporimeter is greater than the second preset temperature time, or when the described defrost time is greater than the 3rd Preset Time, control described dehumidifier and exit described defrost operating condition, wherein, described 3rd Preset Time is greater than described second Preset Time.
3. the control method of dehumidifier according to claim 2, it is characterized in that, when described indoor environment temperature changing value △ T1 is less than or equal to described default temperature threshold and the changing value △ A of described compressor operating electric current is less than or equal to described default current threshold, also controls described dehumidifier again after time delay the 4th Preset Time and enter described defrost operating condition.
4. the control method of dehumidifier according to claim 1, is characterized in that, after described dehumidifier enters described defrost operating condition, controls compressor and quits work, and keeps blower fan to continue to run, and the meter record defrost time.
5. a control device for dehumidifier, is characterized in that, comprises the first temperature detecting unit, humidity detection unit, the second temperature detecting unit, current detecting unit and control unit, wherein,
After dehumidifier start runs, described first temperature detecting unit detects indoor environment temperature T1, described humidity detection unit sensing chamber environment relative humidity RH, described second temperature detecting unit detects the pipe temperature T2 of evaporimeter in described dehumidifier, described current detecting unit detects compressor operating electric current A, and described control unit is according to described indoor environment relative humidity RH and described indoor environment temperature T1 computing environment air dew point temperature Td;
When described surrounding air dew-point temperature Td is less than the first preset temperature, described control unit judges that described dehumidifier enters frosting operating condition;
According to the changing value △ A of described indoor environment temperature changing value △ T1 and described compressor operating electric current, described control unit also for obtaining the changing value △ A of described indoor environment temperature changing value △ T1 and described compressor operating electric current in the first Preset Time, and judges whether that controlling described dehumidifier enters defrost operating condition;
After described dehumidifier enters defrost operating condition, according to the pipe temperature T2 of defrost time and described evaporimeter, described control unit also judges whether that controlling described dehumidifier exits described defrost operating condition.
6. the control device of dehumidifier according to claim 5, is characterized in that,
When described indoor environment temperature changing value △ T1 is less than or equal to default temperature threshold and the changing value △ A of described compressor operating electric current is less than or equal to default current threshold, described control unit controls described dehumidifier and enters defrost operating condition;
When the described defrost time be greater than the second Preset Time and the pipe temperature T2 of described evaporimeter is greater than the second preset temperature time, or when the described defrost time is greater than the 3rd Preset Time, described control unit controls described dehumidifier and exits described defrost operating condition, wherein, described 3rd Preset Time is greater than described second Preset Time.
7. the control device of dehumidifier according to claim 6, it is characterized in that, when described indoor environment temperature changing value △ T1 is less than or equal to described default temperature threshold and the changing value △ A of described compressor operating electric current is less than or equal to described default current threshold, described control unit also controls described dehumidifier again and enters described defrost operating condition after time delay the 4th Preset Time.
8. the control device of dehumidifier according to claim 5, is characterized in that, after described dehumidifier enters described defrost operating condition, described control unit controls compressor and quits work, and keeps blower fan to continue to run, and records the defrost time.
9. a dehumidifier, is characterized in that, comprises the control device of the dehumidifier according to any one of claim 5-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510465073.2A CN105042786B (en) | 2015-07-30 | 2015-07-30 | The control method and device of dehumidifier and dehumidifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510465073.2A CN105042786B (en) | 2015-07-30 | 2015-07-30 | The control method and device of dehumidifier and dehumidifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105042786A true CN105042786A (en) | 2015-11-11 |
| CN105042786B CN105042786B (en) | 2018-09-11 |
Family
ID=54449559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510465073.2A Active CN105042786B (en) | 2015-07-30 | 2015-07-30 | The control method and device of dehumidifier and dehumidifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105042786B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106225176A (en) * | 2016-08-24 | 2016-12-14 | 青岛海尔空调器有限总公司 | Operation of air conditioner control method |
| CN107676924A (en) * | 2017-08-17 | 2018-02-09 | 深圳市艾特智能科技有限公司 | Control method, system, readable storage medium storing program for executing and the smart machine of dehumidifier |
| CN108151231A (en) * | 2017-12-25 | 2018-06-12 | 广东美的制冷设备有限公司 | Defrosting control method, defrosting control device and air conditioner |
| WO2020087358A1 (en) * | 2018-10-31 | 2020-05-07 | 友隆电器工业(深圳)有限公司 | Frostless operating method for dehumidifier and dehumidifier |
| CN113847658A (en) * | 2021-10-22 | 2021-12-28 | 海信（广东）空调有限公司 | Dehumidifier and control method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0682083A (en) * | 1991-08-02 | 1994-03-22 | Matsushita Electric Ind Co Ltd | Defrosting control device for heat pump type air-conditioner |
| JPH07103553A (en) * | 1993-10-01 | 1995-04-18 | Sharp Corp | Air-conditioner |
| CN101382364A (en) * | 2007-09-07 | 2009-03-11 | 乐金电子(天津)电器有限公司 | Defrosting method for low temperature dehumidifier |
| US20130118188A1 (en) * | 2011-11-10 | 2013-05-16 | Justin McKie | Method of defrosting an energy recovery ventilator unit |
| CN103743060A (en) * | 2013-12-24 | 2014-04-23 | 南京协众汽车空调集团有限公司 | Method for heat pump type air-conditioning system defrosting control on basis of air temperature and humidity |
| CN104006449A (en) * | 2014-05-28 | 2014-08-27 | 广东美的集团芜湖制冷设备有限公司 | Air-conditioner and control method thereof |
| CN104006591A (en) * | 2014-05-28 | 2014-08-27 | 美的集团股份有限公司 | Defrosting control method and device of dehumidifier |
| CN104180571A (en) * | 2014-08-25 | 2014-12-03 | 广东美的集团芜湖制冷设备有限公司 | Air conditioner defrosting control method and device and air conditioner |
| CN104676991A (en) * | 2013-11-26 | 2015-06-03 | 珠海格力电器股份有限公司 | Air conditioner and defrosting method thereof |
-
2015
- 2015-07-30 CN CN201510465073.2A patent/CN105042786B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0682083A (en) * | 1991-08-02 | 1994-03-22 | Matsushita Electric Ind Co Ltd | Defrosting control device for heat pump type air-conditioner |
| JPH07103553A (en) * | 1993-10-01 | 1995-04-18 | Sharp Corp | Air-conditioner |
| CN101382364A (en) * | 2007-09-07 | 2009-03-11 | 乐金电子(天津)电器有限公司 | Defrosting method for low temperature dehumidifier |
| US20130118188A1 (en) * | 2011-11-10 | 2013-05-16 | Justin McKie | Method of defrosting an energy recovery ventilator unit |
| CN104676991A (en) * | 2013-11-26 | 2015-06-03 | 珠海格力电器股份有限公司 | Air conditioner and defrosting method thereof |
| CN103743060A (en) * | 2013-12-24 | 2014-04-23 | 南京协众汽车空调集团有限公司 | Method for heat pump type air-conditioning system defrosting control on basis of air temperature and humidity |
| CN104006449A (en) * | 2014-05-28 | 2014-08-27 | 广东美的集团芜湖制冷设备有限公司 | Air-conditioner and control method thereof |
| CN104006591A (en) * | 2014-05-28 | 2014-08-27 | 美的集团股份有限公司 | Defrosting control method and device of dehumidifier |
| CN104180571A (en) * | 2014-08-25 | 2014-12-03 | 广东美的集团芜湖制冷设备有限公司 | Air conditioner defrosting control method and device and air conditioner |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106225176A (en) * | 2016-08-24 | 2016-12-14 | 青岛海尔空调器有限总公司 | Operation of air conditioner control method |
| CN106225176B (en) * | 2016-08-24 | 2019-05-31 | 青岛海尔空调器有限总公司 | Operation of air conditioner control method |
| CN107676924A (en) * | 2017-08-17 | 2018-02-09 | 深圳市艾特智能科技有限公司 | Control method, system, readable storage medium storing program for executing and the smart machine of dehumidifier |
| CN107676924B (en) * | 2017-08-17 | 2020-09-01 | 深圳市艾特智能科技有限公司 | Dehumidifier control method and system, readable storage medium and intelligent device |
| CN108151231A (en) * | 2017-12-25 | 2018-06-12 | 广东美的制冷设备有限公司 | Defrosting control method, defrosting control device and air conditioner |
| WO2020087358A1 (en) * | 2018-10-31 | 2020-05-07 | 友隆电器工业(深圳)有限公司 | Frostless operating method for dehumidifier and dehumidifier |
| CN113847658A (en) * | 2021-10-22 | 2021-12-28 | 海信（广东）空调有限公司 | Dehumidifier and control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105042786B (en) | 2018-09-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105042786A (en) | Dehumidifier and method and device for controlling dehumidifier | |
| CN109323369B (en) | Air conditioner and defrosting method and device thereof | |
| CN109323370B (en) | Air conditioner and defrosting method and device thereof | |
| CN104949266A (en) | Air conditioner and refrigerant leakage detection method of air conditioner | |
| CN108613473A (en) | Wind cooling refrigerator and its control method of defrost, control system, controller | |
| CN104896669A (en) | Air conditioner and method for protecting and controlling same | |
| CN101101239B (en) | Apparatus and method for testing air conditioner | |
| CN109323368B (en) | Air conditioner and defrosting method and device thereof | |
| CN104930814A (en) | Defrosting control method and device for refrigerator | |
| CN110762747B (en) | Defrosting control method of air conditioner | |
| CN105423495A (en) | Air conditioner as well as freeze control method and device thereof | |
| CN101504181A (en) | Defrosting method for air conditioner | |
| CN105627516A (en) | Control method, device for air conditioner and air conditioner | |
| CN104501352A (en) | Detection method, detection system and air conditioner | |
| CN107514746A (en) | Defrosting control method, device, air conditioner and computer-readable recording medium | |
| CN104165486A (en) | Defrosting method of air conditioner | |
| CN107906671B (en) | Refrigerant quantity judging method and system | |
| CN112050540B (en) | Defrosting control method and device and refrigeration equipment | |
| CN111503994B (en) | Control method of air-cooled refrigerator and air-cooled refrigerator | |
| CN105276768A (en) | Defrosting control method and system for air conditioner and air conditioner | |
| CN107036348A (en) | Air conditioner, the defrosting control method of air conditioner and system | |
| CN111322812A (en) | Control method and control device for intelligently defrosting air-cooled refrigerator and refrigerator | |
| CN106766444B (en) | The liquid impact prevention control method and control device and air-conditioning system of air-conditioning system | |
| JP2010071495A (en) | Air conditioner | |
| CN105571071A (en) | Air conditioner and control method and device of air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |