The content of the invention
The invention provides a kind of air conditioning control method, the security of operation of air conditioner is improve.
In order to solve the above technical problems, the present invention is achieved using following technical proposals：
A kind of air conditioning control method, the heat exchanger of indoor apparatus of air conditioner has multiple streams, and the control method includes：
Obtain the temperature value of each stream of heat exchanger；
Temperature value is judged whether less than the first setting antifrost temperature value, if so, then air-conditioning enters antifrost protected mode；
Temperature value is judged whether less than the first anti-cold wind-warm syndrome angle value of setting, if so, then air-conditioning enters anti-cold wind protected mode；
Temperature value is judged whether more than the first anti-overtemperature value of setting, if so, then air-conditioning enters anti-overtemperature protection pattern.
Further, in antifrost protected mode, the control method includes：
Obtain the minimum value Tmin in the temperature value of all streams；
If the second setting antifrost temperature value≤setting antifrost temperature values of Tmin ＜ first, compressor of air conditioner is with first rateFrequency reducing；
If the 3rd setting antifrost temperature value≤setting antifrost temperature values of Tmin ＜ second, compressor of air conditioner is with the second speedFrequency reducing；
If Tmin ＜ the 3rd set antifrost temperature value, and continue the first setting time, then compressor of air conditioner is shut down；
Wherein, the speed of first rate ＜ second.
Further, in antifrost protected mode, the control method also includes：
If the first setting antifrost temperature value≤setting antifrost temperature values of Tmin ＜ the 4th, frequency of air condition compressor keeps notBecome；
If the 4th setting antifrost temperature value≤setting antifrost temperature values of Tmin ＜ the 5th, compressor of air conditioner is with third speedRaising frequency；
If Tmin >=5th sets antifrost temperature value, air-conditioning exits antifrost protected mode.
Further, in anti-cold wind protected mode, the control method includes：
Obtain the minimum value Tmin in the temperature value of all streams；
If the second anti-cold wind-warm syndrome angle value≤Tmin ＜ first of setting set anti-cold wind-warm syndrome angle value, indoor fan is with the first setting windSpeed operating；
If Tmin ＜ second set anti-cold wind-warm syndrome angle value, indoor fan is shut down.
Further, in anti-cold wind protected mode, the control method also includes：If Tmin >=the first setting is anti-coldWind-warm syndrome angle value, then air-conditioning exit anti-cold wind protected mode.
Preferably, in anti-overtemperature protection pattern, the control method includes：
Obtain the maximum of T max in the temperature value of all streams；
If the second anti-overtemperature value of setting≤Tmax ＜ the 3rd set anti-overtemperature value, compressor of air conditioner is with fourth rateFrequency reducing；The second anti-overtemperature value ＞ first of setting sets anti-overtemperature value；
If the 3rd anti-overtemperature value of setting≤Tmax ＜ the 4th set anti-overtemperature value, compressor of air conditioner is with the 5th speedFrequency reducing；
If Tmax >=4th sets anti-overtemperature value, and continues the second setting time, then compressor of air conditioner is shut down；
Wherein, the speed of fourth rate ＜ the 5th.
Further, in anti-overtemperature protection pattern, the control method also includes：If Tmax≤the first sets anti-overheatTemperature value, then air-conditioning exit anti-overtemperature protection pattern.
Further, the temperature value for obtaining each stream, specifically includes：Each is obtained by temperature sensor to flowTemperature value in the middle part of road.
A kind of air-conditioner control system, the heat exchanger of indoor apparatus of air conditioner has multiple streams, and the system includes：
Temperature sensor, the temperature value of each stream for obtaining heat exchanger；
Judge module, for judging whether temperature value less than the first setting antifrost temperature value, for judging whetherTemperature value sets anti-overtemperature less than the first anti-cold wind-warm syndrome angle value of setting for judging whether that temperature value is more than firstValue；
Control module, for when there is temperature value less than the first setting antifrost temperature value, control air-conditioning to be protected into antifrostShield pattern；For when there is temperature value less than the first anti-cold wind-warm syndrome angle value of setting, control air-conditioning to enter anti-cold wind protected mode；For when there is temperature value more than the first anti-overtemperature value of setting, control air-conditioning to enter anti-overtemperature protection pattern.
Further, the temperature sensor is arranged on the middle part of stream.
Compared with prior art, advantages and positive effects of the present invention are：Air conditioning control method of the invention and system, obtainThe temperature value of each stream of heat exchanger is taken, when there is temperature value less than the first setting antifrost temperature value, air-conditioning enters anti-cakingWhite protected mode；When there is temperature value less than the first anti-cold wind-warm syndrome angle value of setting, air-conditioning enters anti-cold wind protected mode；When depositingIn temperature value more than the first anti-overtemperature value of setting, air-conditioning enters anti-overtemperature protection pattern；Each flows to realize heat exchanging deviceThe temperature on road monitored, and enters protected mode when stream temperature value is abnormal, improve operation of air conditioner security and canBy property, it is ensured that air-conditioning normally runs, it is to avoid air-conditioning is damaged.
After specific embodiment of the invention is read in conjunction with the figure, the other features and advantages of the invention will become more clearChu.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below with reference to drawings and Examples,The present invention is described in further detail.
There are the air conditioning control method of the present embodiment, the heat exchanger of indoor apparatus of air conditioner multiple stream, i.e. indoor heat exchangers to beMultithread pipeline heat exchanger, the control method specifically includes following step, shown in Figure 1.
Step S1：Obtain the temperature value of each stream of heat exchanger.
A temperature sensor is laid with each stream of heat exchanger, the temperature value for obtaining stream is realizedThe monitoring temperature of heat exchanging device each stream.
In order to improve the accuracy of the stream temperature value of acquisition, in this embodiment, temperature sensor is arranged in streamPortion, obtains the temperature value in the middle part of stream, to improve the accuracy of the stream temperature value of acquisition.
Step S2：Judge whether temperature value less than the first setting antifrost temperature value.
If so, then performing step S5.
Step S3：Judge whether temperature value less than the first anti-cold wind-warm syndrome angle value of setting.
If so, then performing step S6.
Step S4：Judge whether temperature value more than the first anti-overtemperature value of setting.
If so, then performing step S7.
Step S5：Air-conditioning enters antifrost protected mode.
When there is temperature value less than the first setting antifrost temperature value, air-conditioning enters antifrost protected mode.
In antifrost protected mode, following step is specifically included：
（1）Obtain the minimum value Tmin in the temperature value of all streams of indoor heat exchanger.
（2）If the second setting antifrost temperature value≤setting antifrost temperature values of Tmin ＜ first, compressor of air conditioner withFirst rate frequency reducing.
（3）If the 3rd setting antifrost temperature value≤setting antifrost temperature values of Tmin ＜ second, compressor of air conditioner withSecond speed frequency reducing.
（4）If Tmin ＜ the 3rd set antifrost temperature value, and continue the first setting time, then compressor of air conditioner is shut down.
Wherein, the speed of first rate ＜ second.
In antifrost protected mode, according to the difference of Tmin, control compressor is dropped with first rate frequency reducing, the second speedFrequency is shut down, and reduces the degree of superheat, it is to avoid heat exchanger frosting, improves the security of heat exchanger, improves the security of operation of air conditionerAnd stability, it is ensured that air-conditioning is normally run, it is to avoid air-conditioning is damaged.
In the present embodiment, the first setting time is 3 minutes, has both avoided being shut down late excessively caused by overlong time, is avoided againShut down too early caused by time is too short, antifrost temperature value set in Tmin ＜ the 3rd, and continue compressor shutdown at 3 minutes,Compressor mistakenly stop machine is avoided, the stability and reliability of compressor operating is improved, compressor is effectively protected, operation of air conditioner is improvedSafety and stability.
In antifrost protected mode, by carrying out frequency reducing or shutdown to compressor, Tmin can gradually rise, therefore,In antifrost protected mode, also comprise the steps：
（5）If the first setting antifrost temperature value≤setting antifrost temperature values of Tmin ＜ the 4th, frequency of air condition compressor is protectedHold constant.
（6）If the 4th setting antifrost temperature value≤setting antifrost temperature values of Tmin ＜ the 5th, compressor of air conditioner withThird speed raising frequency.
（7）If Tmin >=5th sets antifrost temperature value, air-conditioning exits antifrost protected mode.
In antifrost pattern, when Tmin is more than the first setting antifrost temperature value, control compressor keep frequency is notBecome or with third speed raising frequency, gradually rise Tmin, until exiting antifrost during the setting antifrost temperature value of Tmin >=5thProtected mode, it is to avoid exit antifrost protected mode in advance, it is to avoid exit in advance caused by antifrost protected mode and enter repeatedlyAntifrost protected mode, and then avoid entering operation of air conditioner exception caused by antifrost protected mode repeatedly, improve operation of air conditionerStability and security.
In the present embodiment, first antifrost temperature value as 4 DEG C is set, second sets antifrost temperature value as 2 DEG C, the 3rdAntifrost temperature value as 0 DEG C is set, the 4th sets antifrost temperature value as 6 DEG C, and the 5th sets antifrost temperature value as 8 DEG C.
In the present embodiment, first rate is 0.2Hz/s, and the second speed is 1Hz/s, and third speed is 0.2Hz/s, it is to avoidIt is unstable that compressor frequency changes excessive caused operation.
Step S6：Air-conditioning enters anti-cold wind protected mode.
When there is temperature value less than the first anti-cold wind-warm syndrome angle value of setting, air-conditioning enters anti-cold wind protected mode.
In anti-cold wind protected mode, following step is specifically included：
（1）Obtain the minimum value Tmin in the temperature value of all streams of indoor heat exchanger.
（2）If the second anti-cold wind-warm syndrome angle value≤Tmin ＜ first of setting set anti-cold wind-warm syndrome angle value, indoor fan is with theOne wind speed setting is operated.
（3）If Tmin ＜ second set anti-cold wind-warm syndrome angle value, indoor fan is shut down.
In anti-cold wind protected mode, according to the difference of Tmin, control indoor fan operated with the first wind speed setting orShut down, it is to avoid blow a cold wind over, improve user experience, improve the stability of operation of air conditioner.
In anti-cold wind protected mode, when Tmin >=the first sets anti-cold wind-warm syndrome angle value, then air-conditioning exits anti-cold wind protectionPattern, normal operation, it is ensured that user normally uses.
In the present embodiment, first to set anti-cold wind-warm syndrome angle value be 36 DEG C, and second to set anti-cold wind-warm syndrome angle value be 16 DEG C,One wind speed setting is 650 revolutions per seconds, it is to avoid wind speed is excessive to cause user uncomfortable.
Step S7：Air-conditioning enters anti-overtemperature protection pattern.
When there is temperature value more than the first anti-overtemperature value of setting, air-conditioning enters anti-overtemperature protection pattern.
In anti-overtemperature protection pattern, following step is specifically included：
（1）Obtain the maximum of T max in the temperature value of all streams of indoor heat exchanger.
（2）If the second anti-overtemperature value of setting≤Tmax ＜ the 3rd set anti-overtemperature value, compressor of air conditioner withFourth rate frequency reducing；The second anti-overtemperature value ＞ first of setting sets anti-overtemperature value.
（3）If the 3rd anti-overtemperature value of setting≤Tmax ＜ the 4th set anti-overtemperature value, compressor of air conditioner with5th speed frequency reducing.
（4）If Tmax >=4th sets anti-overtemperature value, and continues the second setting time, then compressor of air conditioner is shut down.
Wherein, the speed of fourth rate ＜ the 5th.
In anti-overtemperature protection pattern, according to the difference of Tmax, control compressor is dropped with fourth rate frequency reducing, the 5th speedFrequency is shut down, and to reduce heat exchange temperature, it is to avoid the too high damage of heat exchange temperature, improves the security of heat exchanger, improves emptyAllocate and transport the safety and stability of row, it is ensured that air-conditioning normally runs, it is to avoid air-conditioning is damaged.
In the present embodiment, the second setting time is 2 minutes, has both avoided being shut down late excessively caused by overlong time, is avoided againShut down too early caused by time is too short, anti-overtemperature value set in Tmax >=4th, and continue compressor shutdown at 2 minutes,Compressor mistakenly stop machine is avoided, the stability and reliability of compressor operating is improved, compressor is effectively protected, operation of air conditioner is improvedSafety and stability.
In anti-overtemperature protection pattern, by carrying out frequency reducing or shutdown to compressor, Tmax can be reduced gradually, therefore,In anti-overtemperature protection pattern, also comprise the steps：
（5）If Tmax≤the first sets anti-overtemperature value, air-conditioning exits anti-overtemperature protection pattern.
In anti-overtemperature protection pattern, when Tmax≤the first sets anti-overtemperature value, air-conditioning exits anti-overtemperature protection mouldFormula, it is to avoid exit enter anti-overtemperature protection pattern caused by anti-overtemperature protection pattern repeatedly in advance, and then avoid entering anti-repeatedlyOperation of air conditioner exception caused by overtemperature protection pattern, improves the stability and security of operation of air conditioner.
In the present embodiment, first to set anti-overtemperature value be 42 DEG C, and second to set anti-overtemperature value be 44 DEG C,Three to set anti-overtemperature value be 46 DEG C, and the 4th to set anti-overtemperature value be 48 DEG C.
In the present embodiment, fourth rate is 0.2Hz/s, and the 5th speed is 1Hz/s, it is to avoid compressor frequency changes excessiveCaused operation is unstable.
The air conditioning control method of the present embodiment, obtains the temperature value of heat exchanger each stream, when there is temperature value less than theDuring one setting antifrost temperature value, air-conditioning enters antifrost protected mode；Anti-cold wind-warm syndrome is set less than first when there is temperature valueDuring angle value, air-conditioning enters anti-cold wind protected mode；When there is temperature value more than the first anti-overtemperature value of setting, air-conditioning enters anti-Overtemperature protection pattern；The temperature for realizing heat exchanging device each stream monitored, and entered when stream temperature value is abnormal and protectedShield pattern, improves the safety and reliability of operation of air conditioner, it is ensured that air-conditioning normally runs, it is to avoid air-conditioning is damaged.
Based on the design of above-mentioned air conditioning control method, the present embodiment also proposed a kind of air-conditioner control system, in air conditioning chamberThe heat exchanger of machine has multiple streams, and the system includes temperature sensor, judge module, control module etc., referring to Fig. 2 institutesShow.
Temperature sensor, the temperature value for obtaining each stream of heat exchanger.In the present embodiment, temperature sensor is installedAt the middle part of stream.
Judge module, for judging whether temperature value less than the first setting antifrost temperature value, for judging whetherThere is temperature value less than the first anti-cold wind-warm syndrome angle value of setting, for judging whether temperature value more than the anti-overheat temperature of the first settingAngle value.
Control module, for when there is temperature value less than the first setting antifrost temperature value, control air-conditioning to enter anti-cakingWhite protected mode；For when there is temperature value less than the first anti-cold wind-warm syndrome angle value of setting, control air-conditioning to be protected into anti-cold windPattern；For when there is temperature value more than the first anti-overtemperature value of setting, control air-conditioning to enter anti-overtemperature protection pattern.
The course of work of specific air-conditioner control system, describes in detail in above-mentioned air conditioning control method, not superfluous hereinState.
The air-conditioner control system of the present embodiment, obtains the temperature value of heat exchanger each stream, when there is temperature value less than theDuring one setting antifrost temperature value, air-conditioning enters antifrost protected mode；Anti-cold wind-warm syndrome is set less than first when there is temperature valueDuring angle value, air-conditioning enters anti-cold wind protected mode；When there is temperature value more than the first anti-overtemperature value of setting, air-conditioning enters anti-Overtemperature protection pattern；The temperature for realizing heat exchanging device each stream monitored, and entered when stream temperature value is abnormal and protectedShield pattern, improves the safety and reliability of operation of air conditioner, it is ensured that air-conditioning normally runs, it is to avoid air-conditioning is damaged.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than is limited；Although with reference to foregoing realityExample is applied to be described in detail the present invention, for the person of ordinary skill of the art, still can be to foregoing implementationTechnical scheme described in example is modified, or carries out equivalent to which part technical characteristic；And these are changed or replaceChange, do not make the spirit and scope of the essence disengaging claimed technical solution of the invention of appropriate technical solution.