CN102748837B - A kind of air-conditioner and filter screen dirtying thereof block up automatic reminding method - Google Patents
A kind of air-conditioner and filter screen dirtying thereof block up automatic reminding method Download PDFInfo
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Abstract
The invention discloses the dirty stifled automatic reminding method of a kind of filter screen of air conditioner, comprise the steps: S1) in air-conditioning system, preset refrigeration alarm temperature Ta and heat alarm temperature Tb; S2) operational mode of air-conditioning is judged, if refrigeration mode then performs step S3; If heating mode, then perform step S4; S3) heat exchanger coils temperature T comparing with Ta in sensing chamber, if T≤Ta, after forcing indoor high-speed to run a period of time t1, detects coil temperature T again, if T≤Ta, then and the dirty stifled signal of output filtering net; S4) heat exchanger coils temperature T comparing with Ta in sensing chamber, if T >=Tb, after forcing indoor high-speed to run a period of time t2, detects coil temperature T again, if T >=Tb, then and the dirty stifled signal of output filtering net.The present invention can make user can the cleaned filter screen of reminding user in time, for air-conditioner Effec-tive Function provides necessary support, makes the use of air-conditioner more energy-conservation.<!--1-->
Description
Technical field
The present invention relates to air-conditioning technique field, more particularly, relate to a kind of air-conditioner and filter screen dirtying blocks up automatic reminding method, for the cleaned filter screen of reminding user, make air-conditioner Effec-tive Function.
Background technology
Filter screen of air conditioner is that filtered air is with the device stoping the impurity such as dust to enter heat exchanger.But after air-conditioner uses a period of time, the impurity such as dust can be covered with on screen pack, reduce the intake of indoor set, and then affect refrigeration or the heating effect of air-conditioner.
At present, the air-conditioner that market is sold does not have filter screen dirtying to block up the function of prompting, and is with printed words such as " needing user's periodic cleaning screen pack " on its product description.Because air conditioner room unit hangs on wall, or stand in indoor, user cannot know the dirty stifled situation of screen pack exactly, and then cannot in time remove cleaned filter screen.
Have the technical scheme much pointed out about the filter screen dirtying of air-conditioner open in prior art:
Though publication number is the Chinese invention patent application of CN1727791 disclose a kind of air-conditioner with filter screen dirtying prompting function, but this technical scheme only can reflect the dirty stifled situation in the local such as a point or several points on screen pack, cannot make reflecting comprehensively and accurately the whole filter screen dirtying situation of blocking up.
Notification number is that the Chinese utility model patent of CN2580340 also discloses and a kind ofly has the air-conditioning that filter screen dirtying blocks up prompting function, it notifies with timing type method (i.e. timed reminding mode), because the environment for use of user is different, the dirty stifled speed of screen pack is not quite similar, and therefore can not reflect the dirty stifled situation of screen pack accurately.
Notification number is that the Chinese utility model patent of CN201000370 discloses a kind of air-conditioning internal machine screen pack obstruction alarm device adopting temperature sensor to report to the police; when CPU collects pipe temperature sensor temperature≤design temperature, environmentally sensitive actuator temperature >=25 °; CPU protects system; to User Alarms, reminding user cleans net.This technical scheme is: when CPU collect pipe Wen Wendu be less than or equal to design temperature (this temperature is the stifled temperature of the prompting filter screen dirtying of artificial setting, hereinafter referred to as T3) time, namely system reports to the police.But there is wrong report leak in this warning device, reason is: the Guan Wenwei T that our definition occurs when freezing when air-conditioner, Guan Wenwei T2 when filter screen dirtying blocks up.If T2 is less than T, then when filter screen dirtying blocks up, temperature declines, and air-conditioner can be introduced into anti-freeze protection, and make pipe temperature rise, Guan Wen does not reach T2 forever, makes the setting of T2 meaningless.Therefore; we must set T2 and be more than or equal to T; but; the temperature T3 setting prompting filter screen dirtying stifled when us is when being less than or equal to T, and when Guan Wen is less than T3 due to a variety of causes (pipe temperature <T3<T<T2), then system frequently can enter anti-freeze protection; and the now dirty stifled situation of actual filtration net uncertain; but because Guan Wen is also lower than T3, so system can be blocked up by reminding user filter screen dirtying, this is obviously irrational.When reminding the stifled temperature (T3) of filter screen dirtying to be set between T and T2: be greater than 25 ° of these conditions of C because this air-conditioner also will meet environment temperature; just can block up by reminding user filter screen dirtying; but; in a sleep mode, when environment temperature is greater than 25 degree, when air-conditioner runs with low wind; Guan Wen also there will be the situation being reduced to below T3; and screen pack may be not dirty stifled, but system control cpu frequently will enter protection, and reminding user filter screen dirtying blocks up.Moreover, still in a sleep mode, suppose that screen pack is dirty stifled, when air-conditioner run with low wind, environment temperature below 25 degree time, Guan Wenhui continuous decrease is to T3, and now due to the condition that discontented sufficient environment temperature is greater than 25 degree, therefore CPU will not start prompting function, until Guan Wen drops to below T, system can enter anti-freeze.In sum, the dirty stifled prompting function of this technical scheme is inaccurate, easily occurs wrong report, fails to report situation.
Summary of the invention
The deficiency that the present invention exists to overcome prior art, air-conditioner and filter screen dirtying thereof block up automatic reminding method in time, accurately to provide a kind of report to wake up, control system can judge that whether indoor machine filter screen is dirty exactly and block up the degree needing cleaning, and pass on to user the signal needing cleaned filter screen, with the cleaned filter screen of reminding user in time.
The technical solution used in the present invention is: the dirty stifled automatic reminding method of a kind of filter screen of air conditioner, comprises the steps: S1) in air-conditioner system, preset refrigeration alarm temperature Ta and heat alarm temperature Tb;
S2) operational mode of air-conditioner is judged, if refrigeration mode then performs step S3; If heating mode, then perform step S4;
S3) heat exchanger coils temperature T comparing with refrigeration alarm temperature Ta in sensing chamber, if T≤Ta, after forcing indoor machine fan high-speed cruising first scheduled time t1, detects coil temperature T again, if T≤Ta, then and the dirty stifled alarm signal of output filtering net;
S4) in sensing chamber heat exchanger coils temperature T and with heat alarm temperature Tb and compare, if T >=Tb, after forcing indoor machine fan high-speed cruising second scheduled time t2, again detect coil temperature T, if T >=Tb, then the dirty stifled alarm signal of output filtering net.
Preferably, described first scheduled time t1 is 5 minutes, and described second scheduled time t2 is 5 minutes.
Preferably, the setting range of described refrigeration alarm temperature Ta is 0-5 DEG C, described in heat alarm temperature Tb setting range be 50-55 DEG C.
Preferably, in step s3, when continuing the 3rd scheduled time t3, force indoor machine fan high-speed cruising first scheduled time t1 as T≤Ta, again detect coil temperature T, if T≤Ta, then the dirty stifled alarm signal of output filtering net.
Preferably, in step s 4 which, when continuing the 4th scheduled time t4, force indoor machine fan high-speed cruising second scheduled time t2 as T >=Tb, again detect coil temperature T, if T >=Tb, then the dirty stifled alarm signal of output filtering net.
Preferably, in step s3, when continuing the 3rd scheduled time t3, force indoor machine fan high-speed cruising first scheduled time t1 as T≤Ta, again detect coil temperature T, if T≤Ta and continue the 5th scheduled time t5, the then dirty stifled alarm signal of output filtering net.
Preferably, in step s 4 which, when continuing the 4th scheduled time t4, force indoor machine fan high-speed cruising second scheduled time t2 as T >=Tb, again detect coil temperature T, if T >=Tb and when continuing the 6th scheduled time t6, then the dirty stifled alarm signal of output filtering net.
A kind of air-conditioner, comprise refrigeration system and electric-control system, described refrigeration system is used for carrying out refrigeration mode or heating mode operation, described electric-control system comprises controller, described controller comprises cooling and warming alarm temperature presetting module, the operational mode judge module of air-conditioning, refrigeration mode filter screen dirtying blocks up identification module and heating mode filter screen dirtying blocks up identification module
Described cooling and warming alarm temperature presetting module is used in air-conditioning system, presetting refrigeration alarm temperature Ta and heating alarm temperature Tb;
The operational mode judge module of described air-conditioning is for judging the operational mode of air-conditioner, if refrigeration mode then blocks up identification module by refrigeration mode filter screen dirtying judge that whether dirty screen pack is stifled; If heating mode, then whether heating mode filter screen dirtying to block up the identification module screen pack that breaks dirty stifled;
Described refrigeration mode filter screen dirtying blocks up identification module for heat exchanger coils temperature T in sensing chamber and to compare with refrigeration alarm temperature Ta, if T≤Ta, after forcing indoor machine fan high-speed cruising first scheduled time t1, again detect coil temperature T, if T≤Ta, then the dirty stifled alarm signal of output filtering net;
Described heating mode filter screen dirtying block up identification module for heat exchanger coils temperature T in sensing chamber and with heat alarm temperature Tb and compare, if T >=Tb, after forcing indoor machine fan high-speed cruising second scheduled time t2, again detect coil temperature T, if T >=Tb, then the dirty stifled alarm signal of output filtering net.
Preferably, described refrigeration mode filter screen dirtying blocks up identification module when being further used for as T≤Ta and continuing the 3rd scheduled time t3, forces indoor machine fan high-speed cruising first scheduled time t1, again detects coil temperature T, if T≤Ta, then the dirty stifled alarm signal of output filtering net; Described heating mode filter screen dirtying blocks up identification module when being further used for as T >=Tb and continuing the 4th scheduled time t4, forces indoor machine fan high-speed cruising second scheduled time t2, again detects coil temperature T, if T >=Tb, then and the dirty stifled alarm signal of output filtering net.
Preferably, described refrigeration mode filter screen dirtying block up identification module be further used for as T≤Ta and continue the 3rd scheduled time t3 time, force indoor machine fan high-speed cruising first scheduled time t1, again detect coil temperature T, if T≤Ta and continue the 5th scheduled time t5, the then dirty stifled alarm signal of output filtering net; Described heating mode filter screen dirtying block up identification module be further used for as T >=Tb and continue the 4th scheduled time t4 time, force indoor machine fan high-speed cruising second scheduled time t2, again detect coil temperature T, if T >=Tb and continue the 6th scheduled time t6 time, then the dirty stifled alarm signal of output filtering net.
Compared with prior art, the present invention has the following advantages:
The dirty stifled automatic reminding method of filter screen of air conditioner of the present invention, can make user can grasp the dirty stifled situation of filter screen of air conditioner in time, the cleaned filter screen of timely reminding user, for air-conditioner Effec-tive Function provides necessary support, makes the use of air-conditioner more energy-conservation.
The present invention is got rid of by heat exchanger coils temperature in twice sensing chamber affects other possible factor that filter screen dirtying blocks up prompting, and solve the problem that reporting by mistake, failing to report easily appears in the dirty stifled prompting of existing filter screen of air conditioner, dirty stifled prompting is precisely effective.
Accompanying drawing explanation
Fig. 1 is the dirty stifled flow chart automatically reminded of a preferred embodiment of the present invention filter screen of air conditioner;
The dirty stifled flow chart automatically reminded of Fig. 2 another embodiment of the present invention filter screen of air conditioner;
The dirty stifled flow chart automatically reminded of Fig. 3 further embodiment of this invention filter screen of air conditioner.
Detailed description of the invention
Below, in conjunction with Figure of description and specific embodiment, the present invention is further illustrated, should be appreciated that specific embodiment described herein only in order to explain the present invention, be not construed as limiting the invention:
Air-conditioner of the present invention need run in start and under the state of compressor energising operation, can realize its function.First air-conditioner is when dispatching from the factory, by designer within the scope of conventional environment for use, simulation indoor set airstrainer is dirty blocks up the degree needing cleaning, obtain the coil temperature Tb of air-conditioner under this type of state indoor heat exchanger in cooling mode under the coil temperature Ta of indoor heat exchanger and heating mode, and inputted in the program of indoor electric Ore-controlling Role, wherein, Ta is as refrigeration alarm temperature, and Tb is as heating alarm temperature.
First the dirty stifled automatic reminding method of filter screen of air conditioner of the present invention needs in air-conditioner system, complete above-mentioned refrigeration alarm temperature Ta and heat pre-seting of alarm temperature Tb, then the operational mode of air-conditioner is judged, if air-conditioner runs in cooling mode, now indoor heat exchanger is evaporimeter.If indoor set airstrainer is dirty block up certain degree, now indoor set air quantity can corresponding reduction.Evaporimeter is owing to can not get sufficient exchange heat, and its coil temperature T continues to reduce.Electric-control system reads the numerical value of the temperature sensor at indoor heat exchanger coil pipe place with the time interval of 10 seconds, i.e. coil temperature T, coil temperature T and refrigeration alarm temperature Ta is made comparisons, if T≤Ta, after forcing indoor machine fan high-speed cruising first scheduled time t1, again detect coil temperature T, if T≤Ta, then the dirty stifled signal of output filtering net.
If air-conditioner runs in a heating mode, now indoor heat exchanger is condenser, when indoor set airstrainer is dirty block up certain degree time, indoor set intake reduce, condenser owing to can not get abundant heat radiation, its coil temperature T continue raise.Coil temperature T and Tb still made comparisons every 10 seconds by electric-control system, heat exchanger coils temperature T in sensing chamber and with heat alarm temperature Tb and compare, if T >=Tb, after forcing indoor machine fan high-speed cruising second scheduled time t2, again detect coil temperature T, if T >=Tb, then the dirty stifled signal of output filtering net.
The span of the first scheduled time t1 and the second scheduled time t2 is 2-10 minutes, and the setting range of refrigeration alarm temperature Ta is generally 0-5 DEG C, and the setting range heating alarm temperature Tb is generally 50-55 DEG C.Below, for t1=t2=5 minute, Ta=5 DEG C, Tb=53 DEG C illustrate that filter screen of air conditioner of the present invention is dirty and stifledly automatically remind flow process, this optimum configurations is that inventor sums up the one group of preferred disposition obtained by test of many times.
First the operational mode of air-conditioner is judged, see Fig. 1, if air-conditioner runs in cooling mode, when T≤5 DEG C, then indoor electric Ore-controlling Role mandatory order indoor machine fan runs at high speed 5 minutes, the numerical value of coil temperature T is again read after 5 minutes, if indoor air filtration net is certain dirty stifled, so the intake of indoor set will be less, even if make when fan runs up, coil temperature can be less than or equal to refrigeration alarm temperature usually, i.e. T≤5 DEG C, like this, can distinguish reason that air conditioning coils temperature T declines be freeze to cause due to system refrigerant or cause because filter screen dirtying blocks up.Therefore, after indoor machine fan runs at high speed 5 minutes, T≤5 DEG C, then indoor electric Ore-controlling Role judges that filter screen dirtying blocks up, start alarm module, export dirty stifled alarm signal, such as, on the display of indoor set, show " filter screen dirtying " printed words and/or drive buzzer to give the alarm, with the cleaned filter screen of reminding user.Further, after giving the alarm, air-conditioner still continues to run, until air-conditioner power-off alarm is just removed, while electric-control system before this judged result can reset.
If air-conditioner runs in a heating mode, when T >=53 DEG C, then indoor electric Ore-controlling Role order indoor machine fan runs at high speed 5 minutes, if after 5 minutes, and coil temperature T >=53 DEG C, then can judge, the appearance of indoor set airstrainer is dirty blocks up and has arrived the degree needing cleaning, now, will send dirty stifled alarm signal, such as on the display of indoor set, display " filter screen dirtying " printed words and/or order buzzer sound the alarm, to reach the effect of reminding user.
The present invention blocks up identification module by comparison module, filter screen dirtying, by comparing of heat exchanger coil temperature measured value and preset value, scientifically judges whether the screen pack of indoor set exists dirty stifled situation.As the mode that another kind is implemented, whether air-conditioner CPU of the present invention starts filter screen dirtying and blocks up identification module and perform filter screen dirtying and block up the prerequisite of identifying operation making, can specify meet dirty stifled condition for identification when observed temperature value and continue for some time, just start filter screen dirtying and block up identification module.For refrigeration mode, be as heat exchanger coils temperature T≤Ta and when continuing the 3rd scheduled time t3, just pressure indoor machine fan high-speed cruising first scheduled time t1.And in heating mode, be as T≤Tb and when continuing the 4th scheduled time t4, just pressure indoor machine fan high-speed cruising second scheduled time t2.
The span of t1, t2 is 2-10 minutes, and the span of t3, t4 is 2-6 minutes, and the setting range of refrigeration alarm temperature Ta is 0-5 DEG C, and the setting range heating alarm temperature Tb is 50-55 DEG C.Below, for t1=t2=5 minute, t3=t4=3 minute, Ta=5 DEG C, Tb=53 DEG C illustrate that filter screen of air conditioner of the present invention is dirty and stifledly automatically remind flow process:
See Fig. 2, if air-conditioner runs in cooling mode, 3 minutes are continued when heat exchanger coils temperature T≤5 DEG C, then indoor electric Ore-controlling Role mandatory order indoor machine fan runs at high speed 5 minutes, again read the numerical value of coil temperature T after 5 minutes, if T≤5 DEG C, then indoor electric Ore-controlling Role judges that filter screen dirtying blocks up, start alarm module, export dirty stifled alarm signal.Further, after giving the alarm, air-conditioner still continues to run, until after air-conditioner power-off, alarm is just removed, while electric-control system before this judged result can reset.
If air-conditioner runs in a heating mode, continue 3 minutes when T >=53 DEG C, then indoor electric Ore-controlling Role order indoor machine fan runs at high speed 5 minutes, if after 5 minutes, coil temperature T >=53 DEG C, then export dirty stifled alarm signal reminding user.
In the above-mentioned methods, when detect coil temperature T and and Ta makes comparisons time, requiring that " T≤Ta and continue 3 minutes " is as judging the first condition key element that filter screen dirtying blocks up, is be the temporary transient fluctuation of system or continual and steady state to distinguish air conditioning coils temperature T too low.In like manner, as detection coil temperature T and and Tb make comparisons, its objective is equally using " T >=Tb and continue 3 minutes " as judging the condition that filter screen dirtying blocks up.
See Fig. 3, as the mode that the third is implemented, if when air-conditioner runs in cooling mode, continue 3 minutes when heat exchanger coils temperature T≤5 DEG C, then indoor electric Ore-controlling Role mandatory order indoor machine fan runs at high speed 5 minutes, again reads the numerical value of coil temperature T after 5 minutes, in order to improve the stability of system, if T≤5 DEG C and continue the 5th scheduled time t5, the just dirty stifled signal of output filtering net, indoor electric Ore-controlling Role starts alarm module.T5 value 2-7 minutes, optimum value is 3 minutes.
When air-conditioner runs in a heating mode, electric-control system still every 10 seconds just coil temperature T and Tb make comparisons.3 minutes are continued when T >=53 DEG C, then indoor electric Ore-controlling Role order indoor machine fan runs at high speed 5 minutes, if after 5 minutes, and coil temperature T >=53 DEG C and when continuing the 6th scheduled time t6, the then dirty stifled signal of output filtering net, indoor electric Ore-controlling Role starts alarm module.T6 value 2-7 minutes, optimum value is 3 minutes.
The present invention also provides a kind of air-conditioner, comprise refrigeration system and electric-control system, refrigeration system is used for carrying out refrigeration mode or heating mode operation, electric-control system comprises controller, and controller comprises cooling and warming alarm temperature presetting module, the operational mode judge module of air-conditioning, refrigeration mode filter screen dirtying blocks up identification module and heating mode filter screen dirtying blocks up identification module.Wherein, cooling and warming alarm temperature presetting module is used in air-conditioning system, presetting refrigeration alarm temperature Ta and heating alarm temperature Tb; The operational mode judge module of air-conditioning is for judging the operational mode of air-conditioner, if refrigeration mode then blocks up identification module by refrigeration mode filter screen dirtying judge that whether dirty screen pack is stifled; If heating mode, then whether heating mode filter screen dirtying to block up the identification module screen pack that breaks dirty stifled; Refrigeration mode filter screen dirtying blocks up identification module for heat exchanger coils temperature T in sensing chamber and to compare with refrigeration alarm temperature Ta, if T≤Ta, after forcing indoor machine fan high-speed cruising first scheduled time t1, again detect coil temperature T, if T≤Ta, then the dirty stifled alarm signal of output filtering net; Heating mode filter screen dirtying block up identification module for heat exchanger coils temperature T in sensing chamber and with heat alarm temperature Tb and compare, if T >=Tb, after forcing indoor machine fan high-speed cruising second scheduled time t2, again detect coil temperature T, if T >=Tb, then the dirty stifled alarm signal of output filtering net.
Further, refrigeration mode filter screen dirtying block up identification module for as T≤Ta and continue the 3rd scheduled time t3 time, force indoor machine fan high-speed cruising first scheduled time t1, again detect coil temperature T, if T≤Ta, the then dirty stifled alarm signal of output filtering net, heating mode filter screen dirtying block up identification module for as T >=Tb and continue the 4th scheduled time t4 time, force indoor machine fan high-speed cruising second scheduled time t2, again detect coil temperature T, if T >=Tb, the then dirty stifled alarm signal of output filtering net, according to the explanation of the dirty stifled automatic reminding method of aforementioned filter screen of air conditioner, aforesaid operations can improve air-conditioner and judge the stability that filter screen dirtying is stifled.
Further, refrigeration mode filter screen dirtying block up identification module for as T≤Ta and continue the 3rd scheduled time t3 time, force indoor machine fan high-speed cruising first scheduled time t1, again detect coil temperature T, if T≤Ta and continue the 5th scheduled time t5, the then dirty stifled alarm signal of output filtering net, heating mode filter screen dirtying block up identification module for as T >=Tb and continue the 4th scheduled time t4 time, force indoor machine fan high-speed cruising second scheduled time t2, again detect coil temperature T, if T >=Tb and continue the 6th scheduled time t6 time, the then dirty stifled alarm signal of output filtering net, according to the explanation of the dirty stifled automatic reminding method of aforementioned filter screen of air conditioner, aforesaid operations can improve air-conditioner and judge the stability that filter screen dirtying is stifled.
Claims (10)
1. the dirty stifled automatic reminding method of filter screen of air conditioner, is characterized in that comprising the steps:
S1) in air-conditioner system, preset refrigeration alarm temperature Ta and heat alarm temperature Tb;
S2) operational mode of air-conditioner is judged, if refrigeration mode then performs step S3; If heating mode, then perform step S4;
S3) heat exchanger coils temperature T comparing with refrigeration alarm temperature Ta in sensing chamber, if T≤Ta, after forcing indoor machine fan high-speed cruising first scheduled time t1, heat exchanger coils temperature T in sensing chamber again, if T≤Ta, then the dirty stifled alarm signal of output filtering net;
S4) in sensing chamber heat exchanger coils temperature T and with heat alarm temperature Tb and compare, if T >=Tb, after forcing indoor machine fan high-speed cruising second scheduled time t2, heat exchanger coils temperature T in sensing chamber again, if T >=Tb, then the dirty stifled alarm signal of output filtering net.
2. the dirty stifled automatic reminding method of filter screen of air conditioner according to claim 1, is characterized in that: described first scheduled time t1 is 5 minutes, and described second scheduled time t2 is 5 minutes.
3. the dirty stifled automatic reminding method of filter screen of air conditioner according to claim 1, is characterized in that: the setting range of described refrigeration alarm temperature Ta is 0-5 DEG C, described in heat alarm temperature Tb setting range be 50-55 DEG C.
4. the dirty stifled automatic reminding method of filter screen of air conditioner according to claim 1, it is characterized in that: in step s3, as T≤Ta and continue the 3rd scheduled time t3 time, force indoor machine fan high-speed cruising first scheduled time t1, heat exchanger coils temperature T in sensing chamber again, if T≤Ta, then the dirty stifled alarm signal of output filtering net.
5. the dirty stifled automatic reminding method of filter screen of air conditioner according to claim 1, it is characterized in that: in step s 4 which, as T >=Tb and continue the 4th scheduled time t4 time, force indoor machine fan high-speed cruising second scheduled time t2, heat exchanger coils temperature T in sensing chamber again, if T >=Tb, then the dirty stifled alarm signal of output filtering net.
6. the dirty stifled automatic reminding method of filter screen of air conditioner according to claim 1, it is characterized in that: in step s3, as T≤Ta and continue the 3rd scheduled time t3 time, force indoor machine fan high-speed cruising first scheduled time t1, heat exchanger coils temperature T in sensing chamber again, if T≤Ta and continue the 5th scheduled time t5, the then dirty stifled alarm signal of output filtering net.
7. the dirty stifled automatic reminding method of filter screen of air conditioner according to claim 1, it is characterized in that: in step s 4 which, as T >=Tb and continue the 4th scheduled time t4 time, force indoor machine fan high-speed cruising second scheduled time t2, heat exchanger coils temperature T in sensing chamber again, if T >=Tb and continue the 6th scheduled time t6 time, then the dirty stifled alarm signal of output filtering net.
8. an air-conditioner, comprise refrigeration system and electric-control system, described refrigeration system is used for carrying out refrigeration mode or heating mode operation, described electric-control system comprises controller, it is characterized in that: described controller comprises cooling and warming alarm temperature presetting module, the operational mode judge module of air-conditioning, refrigeration mode filter screen dirtying blocks up identification module and heating mode filter screen dirtying blocks up identification module
Described cooling and warming alarm temperature presetting module is used in air-conditioning system, presetting refrigeration alarm temperature Ta and heating alarm temperature Tb;
The operational mode judge module of described air-conditioning is for judging the operational mode of air-conditioner, if refrigeration mode then blocks up identification module by refrigeration mode filter screen dirtying judge that whether dirty screen pack is stifled; If heating mode, then whether heating mode filter screen dirtying to block up the identification module screen pack that breaks dirty stifled;
Described refrigeration mode filter screen dirtying blocks up identification module for heat exchanger coils temperature T in sensing chamber and to compare with refrigeration alarm temperature Ta, if T≤Ta, after forcing indoor machine fan high-speed cruising first scheduled time t1, heat exchanger coils temperature T in sensing chamber again, if T≤Ta, then the dirty stifled alarm signal of output filtering net;
Described heating mode filter screen dirtying block up identification module for heat exchanger coils temperature T in sensing chamber and with heat alarm temperature Tb and compare, if T >=Tb, after forcing indoor machine fan high-speed cruising second scheduled time t2, heat exchanger coils temperature T in sensing chamber again, if T >=Tb, then the dirty stifled alarm signal of output filtering net.
9. air-conditioner according to claim 8, it is characterized in that: described refrigeration mode filter screen dirtying block up identification module be further used for as T≤Ta and continue the 3rd scheduled time t3 time, force indoor machine fan high-speed cruising first scheduled time t1, heat exchanger coils temperature T in sensing chamber again, if T≤Ta, then the dirty stifled alarm signal of output filtering net; Described heating mode filter screen dirtying block up identification module be further used for as T >=Tb and continue the 4th scheduled time t4 time, force indoor machine fan high-speed cruising second scheduled time t2, heat exchanger coils temperature T in sensing chamber again, if T >=Tb, then the dirty stifled alarm signal of output filtering net.
10. air-conditioner according to claim 8, it is characterized in that: described refrigeration mode filter screen dirtying block up identification module be further used for as T≤Ta and continue the 3rd scheduled time t3 time, force indoor machine fan high-speed cruising first scheduled time t1, heat exchanger coils temperature T in sensing chamber again, if T≤Ta and continue the 5th scheduled time t5, the then dirty stifled alarm signal of output filtering net; Described heating mode filter screen dirtying block up identification module be further used for as T >=Tb and continue the 4th scheduled time t4 time, force indoor machine fan high-speed cruising second scheduled time t2, heat exchanger coils temperature T in sensing chamber again, if T >=Tb and continue the 6th scheduled time t6 time, then the dirty stifled alarm signal of output filtering net.
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