CN105650801A - Method and device for controlling defrosting mode of air conditioner to start and air conditioner - Google Patents
Method and device for controlling defrosting mode of air conditioner to start and air conditioner Download PDFInfo
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- 238000010438 heat treatment Methods 0.000 claims abstract description 55
- 238000004378 air conditioning Methods 0.000 claims description 149
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Abstract
The invention discloses a method for controlling a defrosting mode of an air conditioner to start. The method includes the following steps that first power of the air conditioner within a preset time period after a heating mode is started is obtained, and second power of the air conditioner after the preset time period is obtained; a difference value between the second power and the first power is calculated; whether the difference value is larger than a preset power value is judged; and when the difference value is larger than the preset power value, the defrosting mode of the air conditioner is controlled to start. The invention further discloses a device for controlling the defrosting mode of the air conditioner to start and the air conditioner. Due to the facts that when a condenser of an outdoor unit of the air conditioner is frosted, the pressure of a whole heating system is reduced, the system load is smaller, consequently the load current is lowered, and power is lowered, whether the frosting phenomenon of the air conditioner occurs is judged more visually and accurately by monitoring the power change of the air conditioner. By means of the method and device for controlling the defrosting mode of the air conditioner to start, the defrosting mode of the air conditioner can be accurately controlled to start.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly relate to a kind of air-conditioning that controls and enter the method for defrosting mode, device and air-conditioner.
Background technology
Air-conditioner is easy frosting on outdoor condenser in heating operations, along with the increase of frosting degree, can be gradually lowered the heating capacity of air-conditioner, therefore must outdoor condenser be defrosted timely and accurately in air-conditioner running.
In prior art, decide whether to enter defrosting mode typically via the fall off rate judging condenser coil temperature. But owing to the area of condenser coil is relatively big, when frosting inequality on condenser coil, the temperature of condenser coil can not be accurately detected, thus causing that air-conditioner can not enter precisely into defrosting mode.
Summary of the invention
A kind of air-conditioning that controls of offer is provided and enters the method for defrosting mode, device and air-conditioner, it is intended to solve air-conditioner and can not enter precisely into the technical problem of defrosting mode.
Air-conditioning provided by the invention enters the method for defrosting mode and comprises the following steps:
The first power in preset time period after acquisition air-conditioning unlatching heating mode, and the second power after described preset time period;
Calculate the difference between described second power and the first power;
Judge that whether described difference is more than predetermined power value;
When described difference is more than predetermined power value, then controls air-conditioning and enter defrosting mode.
Preferably, after described acquisition air-conditioning unlatching heating mode, the step of the first power in preset time period includes:
Maximum current value in preset time period after acquisition air-conditioning unlatching heating mode, and the operating frequency at the magnitude of voltage occurred corresponding to the moment of described maximum current value and compressor;
The power factor corresponding with described operating frequency is obtained with power factor corresponding relation according to default frequency;
Calculate according to the maximum current value obtained, magnitude of voltage and power factor and obtain described first power.
Preferably, also include before the step of the described acquisition air-conditioning the second power after described preset time period:
Obtain current outdoor temperature;
Judge that whether current outdoor temperature is less than or equal to the first preset temperature;
When described outdoor temperature is less than or equal to the first preset temperature, then perform the step of the described acquisition air-conditioning the second power after described preset time period.
Preferably, also include before the step of the described acquisition air-conditioning the second power after described preset time period:
Obtain the condenser coil temperature of current air-conditioner outdoor unit;
Judge that whether current condenser coil temperature is less than or equal to the second preset temperature;
When described condenser coil temperature is less than or equal to the second preset temperature, then perform the step of the described acquisition air-conditioning the second power after described preset time period.
The device controlling air-conditioning entrance defrosting mode that the present invention further provides includes:
Acquisition module, for obtaining the first power that air-conditioning is opened after heating mode in preset time period, and the second power after described preset time period;
Computing module, for calculating the difference between described second power and the first power;
Judge module, is used for judging that whether described difference is more than predetermined power value;
Control module, for when described difference is more than predetermined power value, then controlling air-conditioning and enter defrosting mode.
Preferably, described acquisition module includes:
Acquiring unit, for obtaining the maximum current value that air-conditioning is opened after heating mode in preset time period, and the operating frequency at the magnitude of voltage occurred corresponding to the moment of described maximum current value and compressor;
Query unit, for obtaining the power factor corresponding with described operating frequency according to the frequency preset with power factor corresponding relation;
Computing unit, obtains described first power for calculating according to the maximum current value obtained, magnitude of voltage and power factor.
Preferably, described acquisition module is additionally operable to obtain current outdoor temperature;
Described judge module is additionally operable to judge that whether current outdoor temperature is less than or equal to the first preset temperature;
When described outdoor temperature is less than or equal to the first preset temperature, described acquisition module obtains the air-conditioning the second power after described preset time period.
Preferably, described acquisition module is additionally operable to obtain the condenser coil temperature of current air-conditioner outdoor unit;
Described judge module is additionally operable to judge that whether current condenser coil temperature is less than or equal to the second preset temperature;
When described condenser coil temperature is less than or equal to the second preset temperature, described acquisition module obtains the air-conditioning the second power after described preset time period.
The air-conditioner that the present invention further provides includes controlling air-conditioning and enters the device of defrosting mode, and described control air-conditioning enters the device of defrosting mode and includes:
Acquisition module, for obtaining the first power that air-conditioning is opened after heating mode in preset time period, and the second power after described preset time period;
Computing module, for calculating the difference between described second power and the first power;
Judge module, is used for judging that whether described difference is more than predetermined power value;
Control module, for when described difference is more than predetermined power value, then controlling air-conditioning and enter defrosting mode.
Control air-conditioning provided by the invention enters the method for defrosting mode, the first power in the preset time period after heating mode and the second power after described preset time period is opened by acquisition air-conditioning, and the difference between the first power and the second power more than predetermined power value time, output enters defrosting mode control signal, to control air-conditioning entrance defrosting mode.Owing to the condenser of air-conditioner outdoor unit is when frosting, whole heating pressure weakens, and system loading diminishes, and load current reduces then, power reduces, and the changed power thereby through monitoring air-conditioning can more intuitively and exactly judge whether air-conditioning frost phenomenon occurs. Control air-conditioning provided by the invention enters the method for defrosting mode can control air-conditioning entrance defrosting mode exactly.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet that the present invention controls the first embodiment of the method for air-conditioning entrance defrosting mode;
Fig. 2 is the refinement schematic flow sheet of step S10 in Fig. 1;
Fig. 3 is the schematic flow sheet that the present invention controls the second embodiment of the method for air-conditioning entrance defrosting mode;
Fig. 4 is the schematic flow sheet that the present invention controls the 3rd embodiment of the method for air-conditioning entrance defrosting mode;
Fig. 5 is the high-level schematic functional block diagram that the present invention controls an embodiment of the device of air-conditioning entrance defrosting mode;
Fig. 6 is the refinement high-level schematic functional block diagram of acquisition module in Fig. 5.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention.
The present invention provides a kind of and controls the method that air-conditioning enters defrosting mode.
It is the schematic flow sheet that the present invention controls the first embodiment of the method for air-conditioning entrance defrosting mode with reference to Fig. 1, Fig. 1.
In one embodiment, the method for this control air-conditioning entrance defrosting mode comprises the following steps:
Step S10, the first power P m in preset time period after acquisition air-conditioning unlatching heating mode;
In the present embodiment, above-mentioned preset time period can be configured according to actual needs, should be able to ensure that air-conditioning occurs without frost in preset time period, and air-conditioning has been in steady operational status.
Preferably, in the present embodiment, above-mentioned preset time period is between the 10th minute to the 20th minute after heating mode opened by air-conditioning. After air-conditioning opens heating mode every time, in initial a few minutes, its operating current is more unstable, and therefore the present embodiment preferably started to obtain the first power P m after the 10th minute. Along with the persistent period lengthening of heating mode opened by air-conditioning, the probability of its frosting can be more big, and the moment of the moment distance air-conditioning unlatching heating mode therefore obtaining the first power P m is unsuitable long. In other embodiments, preset time period can also be 15 minutes to 25 minutes, 10 minutes to 18 minutes etc., specifically can be configured according to actual needs.
Above-mentioned first power P m can be the mean power in preset time period, or is the power in a certain moment in preset time period, it is preferable that above-mentioned first power P m is air-conditioning peak power in above-mentioned preset time period.
Specifically, entering the accuracy of defrosting mode to improve air-conditioning further, with reference to the refinement schematic flow sheet that Fig. 2, Fig. 2 are step S10 in Fig. 1, step S10 includes:
Step S11, the maximum current value Im in preset time period after acquisition air-conditioning unlatching heating mode, and the operating frequency at the magnitude of voltage Vm occurred corresponding to the moment of described maximum current value Im and compressor;
It should be noted that, after air-conditioning is started shooting, first time can be considered when starting heating mode and opens heating mode; Additionally, at air-conditioning with in heating mode running, if opening defrosting mode, also can be considered (after air-conditioning closes defrosting mode, and when opening heating mode) when air-conditioning is transferred to heating mode by defrosting mode and opening heating mode.
In the present embodiment, in the preset time period after heating mode opened by air-conditioning, it is possible to the operating frequency of the current value of real time record operation of air conditioner, magnitude of voltage and corresponding compressor, and stored, used in subsequent step. Such as, in the present embodiment, preset time period is that air-conditioning is opened the 10th minute to the 20th minute after heating mode, then record the compressor operating frequency of above-mentioned 10th minute to the 20th minute interior operation of air conditioner current value, magnitude of voltage and correspondence. After air-conditioning opens heating mode 20 minutes, obtain the maximum current value Im in preset time period and the operating frequency at the magnitude of voltage Vm occurred corresponding to the moment of described maximum current value Im and compressor according to the running current value recorded. Such as, occur in that maximum current value Im when air-conditioning opens the 16th minute after heating mode, then magnitude of voltage Vm when simultaneously obtaining the 16th minute and the operating frequency of compressor.
Step S12, obtains the power factor Qm corresponding with described operating frequency according to default frequency with power factor corresponding relation;
In the present embodiment, said frequencies and power factor corresponding relation can be one about the function of compressor operating frequency Yu power factor, it can also be a mapping table, the present embodiment illustrates for mapping table, mapping table can be configured according to actual needs, it is for instance possible to use following manner is arranged:
| Compressor frequency | Power factor |
| More than or equal to 70HZ | 99.5% |
| More than or equal to 50HZ, and less than 70HZ | 85% |
| Less than 50HZ | 75% |
Step S13, calculates according to the maximum current value Im, the magnitude of voltage Vm that obtain and power factor Qm and obtains described first power P m.
In the present embodiment, the computing formula of the first power P m is as follows:
Pm=Im��Vm��Qm
Step S20, obtains the air-conditioning the second power P s after described preset time period;
In the present embodiment, after above-mentioned preset time period, it is considered as air-conditioning and is likely to occur frost phenomenon, it is therefore desirable to calculate the power (i.e. the second power P s) of air-conditioning in good time, to judge whether air-conditioning frost phenomenon occurs. Such as, after air-conditioning is opened 20 minutes, then calculate the second power P s that air-conditioning is current in real time. After being located at preset time period, the current running current of air-conditioning is Is, working voltage is Vs, and the operating frequency according to current compressor of air conditioner is tabled look-up and obtained corresponding power factor Qs, then the second power P s computing formula is:
Ps=Is��Vs��Qs
Step S30, calculates the difference �� P between described first power P m and the second power P s;
Step S40, it is judged that whether described difference �� P is more than predetermined power value;
Step S50, when described difference �� P is more than predetermined power value, then controls air-conditioning and enters defrosting mode. When described difference �� P is less than predetermined power value, then continue executing with step S20.
In the present embodiment, the computing formula of the difference �� P between above-mentioned first power P m and the second power P s is:
�� P=Pm-Ps
Above-mentioned predetermined power value can be configured according to actual needs, it is preferable that above-mentioned predetermined power value span is 50 watts to 500 watts. Specifically, predetermined power value can be arranged according to the size of air-conditioning heating power, and power is more big, then predetermined power value is more big.
When above-mentioned difference �� P is more than predetermined power value, then output enters defrosting mode control signal, to control air-conditioner entrance defrosting mode.
Control air-conditioning provided by the invention enters the method for defrosting mode, the first power in the preset time period after heating mode and the second power after described preset time period is opened by acquisition air-conditioning, and the difference between the first power and the second power more than predetermined power value time, output enters defrosting mode control signal, to control air-conditioning entrance defrosting mode.Owing to the condenser of air-conditioner outdoor unit is when frosting, whole heating pressure weakens, and system loading diminishes, and load current reduces then, power reduces, and the changed power thereby through monitoring air-conditioning can more intuitively and exactly judge whether air-conditioning frost phenomenon occurs. Control air-conditioning provided by the invention enters the method for defrosting mode can control air-conditioning entrance defrosting mode exactly.
Further, in order to further such that air-conditioning enter precisely intos defrosting mode more, improve the reliability of air-conditioner, with reference to Fig. 3, Fig. 3 is the schematic flow sheet that the present invention controls the second embodiment of the method for air-conditioning entrance defrosting mode, based on above-described embodiment, in the present embodiment, also include before step S20:
Step S60, obtains current outdoor temperature;
Step S70, it is judged that whether current outdoor temperature is less than or equal to the first preset temperature;
When described outdoor temperature is less than or equal to the first preset temperature, then perform step S20. When described outdoor temperature is more than the first preset temperature, then continue executing with step S60.
In the present embodiment, it is possible to a temperature sensor is set on the shell of air-conditioner outdoor unit, outdoor temperature is monitored in real time by this temperature sensor.
The size of above-mentioned first preset temperature can be configured according to actual needs, it is preferable that in the present embodiment, and the first preset temperature can be 10 DEG C. Namely when outdoor temperature is more than the first preset temperature, then think that air-conditioner does not have frost, therefore need not perform follow-up to obtain the second power, calculate the difference of the first power and the second power and judge that difference is whether more than the step of predetermined power value, thus effectively reducing unnecessary processing procedure, improve the work efficiency of air-conditioner, and further increase accuracy and the reliability of air-conditioning entrance defrosting mode.
Should be noted that, above-mentioned steps S60 can also perform before step S13, namely when described outdoor temperature is less than or equal to the first preset temperature, then perform step S13, thus effectively further decreasing unnecessary processing procedure, improve the work efficiency of air-conditioner, and further increase accuracy and the reliability of air-conditioning entrance defrosting mode.
Further, in order to further such that air-conditioning enter precisely intos defrosting mode more, improve the reliability of air-conditioner, with reference to Fig. 4, Fig. 4 is the schematic flow sheet that the present invention controls the 3rd embodiment of the method for air-conditioning entrance defrosting mode, based on above-described embodiment, in the present embodiment, also include before step S20:
Step S80, obtains the condenser coil temperature of current air-conditioner outdoor unit;
Step S90, it is judged that whether current condenser coil temperature is less than or equal to the second preset temperature;
When described condenser coil temperature is less than or equal to the second preset temperature, then perform step S20; When described condenser coil temperature is more than the second preset temperature, then perform step S80.
In the present embodiment, it is possible to a temperature sensor is set on the condenser coil of air-conditioner outdoor unit, the temperature of condenser coil is monitored in real time by this temperature sensor.
The size of above-mentioned second preset temperature can be configured according to actual needs, it is preferable that in the present embodiment, and the second preset temperature span can be 0 DEG C to 2 DEG C. Namely when condenser coil temperature is more than the second preset temperature, then think that air-conditioner does not have frost, therefore need not perform follow-up to obtain the second power, calculate the difference of the first power and the second power and judge that difference is whether more than the step of predetermined power value, thus effectively reducing unnecessary processing procedure, improve the work efficiency of air-conditioner, and further increase accuracy and the reliability of air-conditioning entrance defrosting mode.
Should be noted that, above-mentioned steps S80 can also perform before step S13, namely when described condenser coil temperature is less than or equal to the second preset temperature, then perform step S13, thus effectively further decreasing unnecessary processing procedure, improve the work efficiency of air-conditioner, and further increase accuracy and the reliability of air-conditioning entrance defrosting mode.
It should be noted that, in the above-described embodiments, it is possible to only judge outdoor temperature, and when outdoor temperature is less than or equal to the first preset temperature, perform step S20; Only can also judge condenser coil temperature, and when condenser coil temperature is less than or equal to the second preset temperature, perform step S20; Or can judge outdoor temperature and condenser coil temperature simultaneously, and when outdoor temperature less than or equal to the first preset temperature and condenser coil temperature less than or equal to the second preset temperature time, perform step S20.
The present invention further provides a kind of air-conditioning that controls and enter the device of defrosting mode, be the high-level schematic functional block diagram that the present invention controls an embodiment of the device of air-conditioning entrance defrosting mode with reference to Fig. 5, Fig. 5.
In one embodiment, the device of this control air-conditioning entrance defrosting mode includes:
Acquisition module 10, for obtaining the first power that air-conditioning is opened after heating mode in preset time period, and the second power after described preset time period;
In the present embodiment, above-mentioned preset time period can be configured according to actual needs, should be able to ensure that air-conditioning occurs without frost in preset time period, and air-conditioning has been in steady operational status.
Preferably, in the present embodiment, above-mentioned preset time period is between the 10th minute to the 20th minute after heating mode opened by air-conditioning. After air-conditioning opens heating mode every time, in initial a few minutes, its operating current is more unstable, and therefore the present embodiment preferably started to obtain the first power P m after the 10th minute. Along with the persistent period lengthening of heating mode opened by air-conditioning, the probability of its frosting can be more big, and the moment of the moment distance air-conditioning unlatching heating mode therefore obtaining the first power P m is unsuitable long. In other embodiments, preset time period can also be 15 minutes to 25 minutes, 10 minutes to 18 minutes etc., specifically can be configured according to actual needs.
Above-mentioned first power P m can be the mean power in preset time period, or is the power in a certain moment in preset time period, it is preferable that above-mentioned first power P m is air-conditioning peak power in above-mentioned preset time period.
Specifically, entering the accuracy of defrosting mode to improve air-conditioning further, with reference to the refinement high-level schematic functional block diagram that Fig. 6, Fig. 6 are acquisition module in Fig. 5, described acquisition module 10 specifically includes:
Acquiring unit 11, for obtaining the maximum current value Im that air-conditioning is opened after heating mode in preset time period, and the operating frequency at the magnitude of voltage Vm occurred corresponding to the moment of described maximum current value Im and compressor;
It should be noted that, after air-conditioning is started shooting, first time can be considered when starting heating mode and opens heating mode; Additionally, at air-conditioning with in heating mode running, if opening defrosting mode, also can be considered (after air-conditioning closes defrosting mode, and when opening heating mode) when air-conditioning is transferred to heating mode by defrosting mode and opening heating mode.
In the present embodiment, in the preset time period after heating mode opened by air-conditioning, it is possible to the operating frequency of the current value of real time record operation of air conditioner, magnitude of voltage and corresponding compressor, and stored, used in subsequent step.Such as, in the present embodiment, preset time period is that air-conditioning is opened the 10th minute to the 20th minute after heating mode, then record the compressor operating frequency of above-mentioned 10th minute to the 20th minute interior operation of air conditioner current value, magnitude of voltage and correspondence. After air-conditioning opens heating mode 20 minutes, obtain the maximum current value Im in preset time period and the operating frequency at the magnitude of voltage Vm occurred corresponding to the moment of described maximum current value Im and compressor according to the running current value recorded. Such as, occur in that maximum current value Im when air-conditioning opens the 16th minute after heating mode, then magnitude of voltage Vm when simultaneously obtaining the 16th minute and the operating frequency of compressor.
Query unit 12, for obtaining the power factor Qm corresponding with described operating frequency according to the frequency preset with power factor corresponding relation;
In the present embodiment, said frequencies and power factor corresponding relation can be one about the function of compressor operating frequency Yu power factor, it can also be a mapping table, the present embodiment illustrates for mapping table, mapping table can be configured according to actual needs, it is for instance possible to use following manner is arranged:
| Compressor frequency | Power factor |
| More than or equal to 70HZ | 99.5% |
| More than or equal to 50HZ, and less than 70HZ | 85% |
[0107]
| Less than 50HZ | 75% |
Computing unit 13, obtains described first power P m for calculating according to the maximum current value Im, the magnitude of voltage Vm that obtain and power factor Qm.
In the present embodiment, the computing formula of the first power P m is as follows:
Pm=Im��Vm��Qm
In the present embodiment, after above-mentioned preset time period, it is considered as air-conditioning and is likely to occur frost phenomenon, it is therefore desirable to calculate the power (i.e. the second power P s) of air-conditioning in good time, to judge whether air-conditioning frost phenomenon occurs. Such as, after air-conditioning is opened 20 minutes, then calculate the second power P s that air-conditioning is current in real time. After being located at preset time period, the current running current of air-conditioning is Is, working voltage is Vs, and the operating frequency according to current compressor of air conditioner is tabled look-up and obtained corresponding power factor Qs, then the second power P s computing formula is:
Ps=Is��Vs��Qs
Computing module 20, for calculating the difference between described second power and the first power;
Judge module 30, is used for judging that whether described difference is more than predetermined power value;
Control module 40, for when described difference is more than predetermined power value, then controlling air-conditioning and enter defrosting mode.
In the present embodiment, the computing formula of the difference �� P between above-mentioned first power P m and the second power P s is:
�� P=Pm-Ps
Above-mentioned predetermined power value can be configured according to actual needs, it is preferable that above-mentioned predetermined power value span is 50 watts to 500 watts. Specifically, predetermined power value can be arranged according to the size of air-conditioning heating power, and power is more big, then predetermined power value is more big.
When above-mentioned difference �� P is more than predetermined power value, then output enters defrosting mode control signal, to control air-conditioner entrance defrosting mode.
Control air-conditioning provided by the invention enters the device of defrosting mode, the first power in the preset time period after heating mode and the second power after described preset time period is opened by acquisition air-conditioning, and the difference between the first power and the second power more than predetermined power value time, output enters defrosting mode control signal, to control air-conditioning entrance defrosting mode. Owing to the condenser of air-conditioner outdoor unit is when frosting, whole heating pressure weakens, and system loading diminishes, and load current reduces then, power reduces, and the changed power thereby through monitoring air-conditioning can more intuitively and exactly judge whether air-conditioning frost phenomenon occurs.Control air-conditioning provided by the invention enters the device of defrosting mode can control air-conditioning entrance defrosting mode exactly.
Further, in order to further such that air-conditioning enter precisely intos defrosting mode more, improve the reliability of air-conditioner, based on above-described embodiment, in the present embodiment, described acquisition module 10 is additionally operable to obtain current outdoor temperature; Described judge module 30 is additionally operable to judge that whether current outdoor temperature is less than or equal to the first preset temperature; When described outdoor temperature is less than or equal to the first preset temperature, described acquisition module 10 obtains the air-conditioning the second power after described preset time period.
In the present embodiment, it is possible to a temperature sensor is set on the shell of air-conditioner outdoor unit, outdoor temperature is monitored in real time by this temperature sensor.
The size of above-mentioned first preset temperature can be configured according to actual needs, it is preferable that in the present embodiment, and the first preset temperature can be 10 DEG C. Namely when outdoor temperature is more than the first preset temperature, then think that air-conditioner does not have frost, therefore need not perform follow-up to obtain the second power, calculate the difference of the first power and the second power and judge that difference is whether more than the step of predetermined power value, thus effectively reducing unnecessary processing procedure, improve the work efficiency of air-conditioner, and further increase accuracy and the reliability of air-conditioning entrance defrosting mode.
Further, in order to further such that air-conditioning enter precisely intos defrosting mode more, improve the reliability of air-conditioner, described acquisition module 10 is additionally operable to obtain the condenser coil temperature of current air-conditioner outdoor unit; Described judge module 30 is additionally operable to judge that whether current condenser coil temperature is less than or equal to the second preset temperature; When described condenser coil temperature is less than or equal to the second preset temperature, described acquisition module 10 obtains the air-conditioning the second power after described preset time period.
In the present embodiment, it is possible to a temperature sensor is set on the condenser coil of air-conditioner outdoor unit, the temperature of condenser coil is monitored in real time by this temperature sensor.
The size of above-mentioned second preset temperature can be configured according to actual needs, it is preferable that in the present embodiment, and the second preset temperature span can be 0 DEG C to 2 DEG C. Namely when condenser coil temperature is more than the second preset temperature, then think that air-conditioner does not have frost, therefore need not perform follow-up to obtain the second power, calculate the difference of the first power and the second power and judge that difference is whether more than the step of predetermined power value, thus effectively reducing unnecessary processing procedure, improve the work efficiency of air-conditioner, and further increase accuracy and the reliability of air-conditioning entrance defrosting mode.
The present invention also provides for a kind of air-conditioner, and this air-conditioner includes controlling air-conditioning and enters the device of defrosting mode, and the structure of the device that this control air-conditioning enters defrosting mode can refer to above-described embodiment, does not repeat them here. Naturally, owing to the air-conditioner of the present embodiment have employed the technical scheme that above-mentioned control air-conditioning enters the device of defrosting mode, therefore this air-conditioner has all of beneficial effect of device of above-mentioned control air-conditioning entrance defrosting mode.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every equivalent structure utilizing description of the present invention and accompanying drawing content to make or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical fields, all in like manner include in the scope of patent protection of the present invention.
Claims (9)
1. one kind controls the method that air-conditioning enters defrosting mode, it is characterised in that described air-conditioning enters the method for defrosting mode and comprises the following steps:
The first power in preset time period after acquisition air-conditioning unlatching heating mode, and the second power after described preset time period;
Calculate the difference between described second power and the first power;
Judge that whether described difference is more than predetermined power value;
When described difference is more than predetermined power value, then controls air-conditioning and enter defrosting mode.
2. the method controlling air-conditioning entrance defrosting mode as claimed in claim 1, it is characterised in that after described acquisition air-conditioning unlatching heating mode, the step of the first power in preset time period includes:
Maximum current value in preset time period after acquisition air-conditioning unlatching heating mode, and the operating frequency at the magnitude of voltage occurred corresponding to the moment of described maximum current value and compressor;
The power factor corresponding with described operating frequency is obtained with power factor corresponding relation according to default frequency;
Calculate according to the maximum current value obtained, magnitude of voltage and power factor and obtain described first power.
3. the method controlling air-conditioning entrance defrosting mode as claimed in claim 1, it is characterised in that also include before the step of the described acquisition air-conditioning the second power after described preset time period:
Obtain current outdoor temperature;
Judge that whether current outdoor temperature is less than or equal to the first preset temperature;
When described outdoor temperature is less than or equal to the first preset temperature, then perform the step of the described acquisition air-conditioning the second power after described preset time period.
4. the method controlling air-conditioning entrance defrosting mode as described in claim 1 or 3, it is characterised in that also include before the step of the described acquisition air-conditioning the second power after described preset time period:
Obtain the condenser coil temperature of current air-conditioner outdoor unit;
Judge that whether current condenser coil temperature is less than or equal to the second preset temperature;
When described condenser coil temperature is less than or equal to the second preset temperature, then perform the step of the described acquisition air-conditioning the second power after described preset time period.
5. the device controlling air-conditioning entrance defrosting mode, it is characterised in that described air-conditioning enters the device of defrosting mode and includes:
Acquisition module, for obtaining the first power that air-conditioning is opened after heating mode in preset time period, and the second power after described preset time period;
Computing module, for calculating the difference between described second power and the first power;
Judge module, is used for judging that whether described difference is more than predetermined power value;
Control module, for when described difference is more than predetermined power value, then controlling air-conditioning and enter defrosting mode.
6. the air-conditioning that controls as claimed in claim 5 enters the device of defrosting mode, it is characterised in that described acquisition module includes:
Acquiring unit, for obtaining the maximum current value that air-conditioning is opened after heating mode in preset time period, and the operating frequency at the magnitude of voltage occurred corresponding to the moment of described maximum current value and compressor;
Query unit, for obtaining the power factor corresponding with described operating frequency according to the frequency preset with power factor corresponding relation;
Computing unit, obtains described first power for calculating according to the maximum current value obtained, magnitude of voltage and power factor.
7. the air-conditioning that controls as claimed in claim 5 enters the device of defrosting mode, it is characterised in that
Described acquisition module is additionally operable to obtain current outdoor temperature;
Described judge module is additionally operable to judge that whether current outdoor temperature is less than or equal to the first preset temperature;
When described outdoor temperature is less than or equal to the first preset temperature, described acquisition module obtains the air-conditioning the second power after described preset time period.
8. the air-conditioning that controls as claimed in claim 7 enters the device of defrosting mode, it is characterised in that
Described acquisition module is additionally operable to obtain the condenser coil temperature of current air-conditioner outdoor unit;
Described judge module is additionally operable to judge that whether current condenser coil temperature is less than or equal to the second preset temperature;
When described condenser coil temperature is less than or equal to the second preset temperature, described acquisition module obtains the air-conditioning the second power after described preset time period.
9. an air-conditioner, it is characterised in that the air-conditioning that controls that described air-conditioner includes as described in any one of claim 5 to 8 enters the device of defrosting mode.
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| CN201410748060.1A CN105650801B (en) | 2014-12-08 | 2014-12-08 | Control air-conditioning enters the method, apparatus and air conditioner of defrosting mode |
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| CN106500267A (en) * | 2016-10-31 | 2017-03-15 | 芜湖美智空调设备有限公司 | The defrosting control method and its control device of air-conditioner |
| CN107014035A (en) * | 2017-03-29 | 2017-08-04 | 青岛海尔空调电子有限公司 | The defrosting control method and device of air conditioner |
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| CN106500267A (en) * | 2016-10-31 | 2017-03-15 | 芜湖美智空调设备有限公司 | The defrosting control method and its control device of air-conditioner |
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| CN110736219A (en) * | 2019-09-20 | 2020-01-31 | 青岛海尔空调器有限总公司 | Anti-freezing control method for indoor unit of air conditioner |
| CN110736218A (en) * | 2019-09-20 | 2020-01-31 | 青岛海尔空调器有限总公司 | Anti-freezing control method for indoor unit of air conditioner |
| CN111780346A (en) * | 2020-06-04 | 2020-10-16 | 海信（山东）空调有限公司 | Air conditioner heat exchange efficiency control method and air conditioner |
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| CN112413819A (en) * | 2020-10-22 | 2021-02-26 | 珠海格力电器股份有限公司 | Defrosting control method, controller, air conditioner, storage medium and terminal |
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| CN113028593A (en) * | 2021-03-30 | 2021-06-25 | 珠海格力电器股份有限公司 | Defrosting control method and device for air conditioner, storage medium and processor |
| CN114061031A (en) * | 2021-10-28 | 2022-02-18 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method and device and air conditioner |
| CN114877492A (en) * | 2022-04-29 | 2022-08-09 | 浙江中广电器集团股份有限公司 | Heat pump and defrosting control method thereof |
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