CN105091243A - Air conditioner control method - Google Patents
Air conditioner control method Download PDFInfo
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- CN105091243A CN105091243A CN201510545458.XA CN201510545458A CN105091243A CN 105091243 A CN105091243 A CN 105091243A CN 201510545458 A CN201510545458 A CN 201510545458A CN 105091243 A CN105091243 A CN 105091243A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
Abstract
The invention discloses an air conditioner control method. The air conditioner control method includes the steps that an air conditioner is started to run under a refrigerating mode, when room temperature PID control of the air conditioner starts, the current indoor temperature detected by an indoor temperature sensor is acquired and serves as first indoor temperature, a difference value between the first indoor temperature and set compensation temperature serves as second indoor temperature, the temperature difference between the second indoor temperature and the current indoor target temperature is calculated, the indoor temperature difference is obtained, room temperature PID operation is performed according to the indoor temperature difference, and first target frequency is obtained; the second indoor temperature is compared with set comfortable temperature, and room temperature PID control or plate temperature fuzzy control is determined to be executed according to the comparison result. By applying the air conditioner control method, the indoor temperature adjustment comfort and the lower power consumption energy saving performance of the air conditioner are both taken into consideration while the problem that cold air blown out of an existing variable-frequency air conditioner leads to uncomfortable refrigeration is solved.
Description
Technical field
The invention belongs to air-conditioning technique field, specifically, relate to a kind of air conditioning control method.
Background technology
Hot summer, a lot of people be unable to do without air-conditioning the whole day and night.But it is a lot of to the harm of human body to blow air-conditioning for a long time, easy air conditioner disease.
Although existing convertible frequency air-conditioner can control compressor operating frequency, it controls, according to the indoor objects temperature being only indoor temperature and setting, can not change air conditioning exhausting temperature.And for reaching fast-refrigerating, existing air-conditioned leaving air temp will far below design temperature, air conditioning exhausting temperature is low, and the wind of blowout is cold wind.Cold wind blows on the person, feels very uncomfortable, and flu of easily catching a cold.Blast-cold air-blowing flu of catching a cold all is afraid of more by a lot of family, takes air-ventilating garments daytime and blows air-conditioning, opens air-conditioning at night, while be covered with thick cotton-wadded quilt, think and this prevents air conditioner disease when sleep.But cold air can enter human body from respiratory tract, the time of blowing has been grown and has still had that mouth and nose are dry, the cold symptoms such as to have sore throat, and fundamentally can not solve the uncomfortable problem of refrigeration.
On the other hand, to indoor temperature regulate comfortableness and energy saving be evaluate two important indicators of household air-conditioner quality at present.If indoor temperature to be adjusted to the overlong time of design temperature, user cannot place oneself in the midst of the environment with suitable design temperature fast, causes the comfortableness of user's using air-condition device to decline.Because the power consumption of current air-conditioner in various household electrical appliance tops the list, air-conditioner energy consumption is high, and electrical network power consumption is serious, especially in summer, often causes serious severe power shortage due to the use of air-conditioner.
Thus, the temperature how improving air-conditioner regulates comfortableness and reduces the power consumption of air-conditioner, is the focus and emphasis of air-conditioner industry research always.
Summary of the invention
The object of this invention is to provide a kind of air conditioning control method, while solution existing convertible frequency air-conditioner blowing cold air and causing freezes uncomfortable problem, take into account the low-power consumption energy saving of thermoregulator comfortableness and air-conditioner in air conditioner chamber.
For achieving the above object, the present invention adopts following technical proposals to be achieved:
A kind of air conditioning control method, described air-conditioning is wall-hanging air conditioner, and described method comprises:
Air-conditioning start running refrigerating pattern, when air-conditioning enters room temperature PID control, obtain the current indoor temperature that indoor temperature transmitter detects, as the first indoor temperature, using the difference of described first indoor temperature and setting compensation temperature as the second indoor temperature, calculate the temperature difference between described second indoor temperature and current indoor target temperature, obtain the indoor temperature difference, carry out room temperature PID computing according to the described indoor temperature difference, obtain first object frequency;
The comfort temperature of described second indoor temperature and setting is made comparisons;
If described second indoor temperature is not less than described comfort temperature, performs following room temperature PID and control:
Compressor according to described first object FREQUENCY CONTROL;
If described second indoor temperature is less than described comfort temperature, perform following fuzzy control:
Detect the coil temperature of the evaporimeter of air-conditioning, the coil pipe target temperature of described coil temperature and setting is made comparisons; If described coil temperature is greater than described coil pipe target temperature, compressor according to described first object FREQUENCY CONTROL; If described coil temperature is not more than described coil pipe target temperature, the current operation frequency of described compressor is reduced acquisition second target frequency, controls described compressor according to the smaller value in described second target frequency and described first object frequency.
Air conditioning control method as above, described setting compensation temperature prestores and call, corresponding with described current indoor target temperature and described current outdoor temperature compensation temperature.
Air conditioning control method as above,
Described setting compensation temperature is by following method call:
Described current indoor target temperature and the indoor objects temperature range prestored are made comparisons, judges the indoor objects temperature range belonging to described current indoor target temperature; Described current outdoor temperature and the outdoor temperature scope prestored are made comparisons, judges the outdoor temperature scope belonging to described current outdoor temperature; According to searching in that prestore, corresponding with indoor objects temperature range and outdoor temperature scope multiple compensation temperatures with the indoor objects temperature range belonging to described current indoor target temperature and the corresponding compensation temperature of the outdoor temperature scope belonging to described current outdoor temperature as described setting compensation temperature, and call.
Air conditioning control method as above, if described coil temperature is not more than described coil pipe target temperature first after air-conditioning start, described second target frequency is the refrigeration minimum frequency of setting; If described coil temperature is non-after air-conditioning start be not more than described coil pipe target temperature first, described second target frequency is between described current operation frequency and described refrigeration minimum frequency.
Air conditioning control method as above, if described coil temperature is non-after air-conditioning start be not more than described coil pipe target temperature first, described second target frequency adopts following method to determine:
If described coil temperature is non-after air-conditioning start be not more than described coil pipe target temperature first, obtain the described current operation frequency of described compressor, described current operation frequency is reduced adjusting frequency of setting by the regulation time every setting, and the frequency after reduction is described second target frequency.
Air conditioning control method as above, reduces adjusting frequency after described second target frequency of setting using described current operation frequency at every turn, first judges whether the difference of described coil pipe target temperature and described coil temperature is not less than the overshoot temperature value of setting; If so, continue to perform after described regulation time arrives to adjust frequency as the process of described second target frequency described in described current operation frequency reduces, otherwise, keep described second target frequency constant.
Air conditioning control method as above, when performing described fuzzy control, if the smaller value in described first object frequency and described second target frequency is greater than the highest frequency of setting, then controls described compressor according to described highest frequency.
Air conditioning control method as above, in air conditioner refrigerating running, if the wind speed that user sets detected, then the blower fan controlling air-conditioning runs according to the wind speed of described setting; Otherwise, control described blower fan and run according to highest wind velocity.
Compared with prior art, advantage of the present invention and good effect are:
Adopt method of the present invention, before air-conditioner enters room temperature PID control, the current indoor temperature that indoor temperature transmitter detects is not compensated, control compressor operating according to normal control mode, indoor temperature is reduced fast, ensures the comfortableness that indoor temperature regulates; After air-conditioner enters room temperature PID control, by setting comfort temperature, according to the size of indoor temperature and comfort temperature, select adopt room temperature PID to control or adopt the fuzzy control based on evaporator coil temperature, when room temperature height in time, fast room is lowered the temperature, refrigeration object can be reached, coil temperature can be stabilized in coil pipe target temperature again, make air conditioning exhausting temperature pleasant, reach cool and not cold comfortable cooling effect.And, room temperature PID is controlled, setting compensation temperature is utilized to compensate current indoor temperature, the benchmark indoor temperature that temperature after compensating controls as room temperature PID, reduce benchmark indoor temperature, make benchmark indoor temperature correspond to the actual temperature in user's main activities space closer to indoor, compressor operating frequency can be reduced, reduce energy consumption of compressor, realize energy saving.
After reading the specific embodiment of the present invention by reference to the accompanying drawings, the other features and advantages of the invention will become clearly.
Accompanying drawing explanation
Fig. 1 is the flow chart of air conditioning control method of the present invention first embodiment;
Fig. 2 is the flow chart of air conditioning control method of the present invention second embodiment;
Fig. 3 is the particular flow sheet determining the second target frequency in Fig. 2.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, technical scheme of the present invention is described in further detail.
The temperature how improving air-conditioner regulates comfortableness and reduces the power consumption of air-conditioner, is the focus and emphasis of air-conditioner industry research always.Existing air-conditioner is mostly transducer air conditioning, and prior art is in raising transducer air conditioning comfortableness and reduce in power consumption, be mostly the control algolithm concentrating on air-conditioner process on, such as, adopt pid algorithm, FUZZY ALGORITHMS FOR CONTROL etc.No matter be which kind of control algolithm, when using current indoor temperature as parameter, be all the indoor temperature that detects of the indoor temperature transmitter directly arranged on air-conditioning as current indoor temperature, and then using indoor temperature as with reference to parameter, perform different control.But prior art all ignores a kind of phenomenon, that is: for wall-hanging air conditioner, in room, installation site is relatively high, is generally all arranged on the position on distance about 2 meters, ground.Indoor temperature transmitter air-conditioning being used for detect indoor temperature is generally positioned on air-conditioner air inlet or evaporimeter, and thus, the air themperature that indoor temperature transmitter detects is the temperature of the air of about the 2 meters At The Heights in distance ground.And in room, user's main activities Spatial General 6 R is the area of space from ground to distance about 1.35 meters, ground.According to the theory of molecular motion, cold air moves downward.So, when air-conditioner running refrigerating pattern, because cold air sinks, the temperature of upper air is also than the temperature drift of lower air.Thus the temperature drift that indoor temperature transmitter detects is in the temperature in user's main activities space.The present invention is based on this phenomenon, this angle of temperature itself is set out indoor, proposes a kind of air-conditioner control technology scheme taking into account the low-power consumption energy saving of thermoregulator comfortableness and air-conditioner in air conditioner chamber.
Refer to Fig. 1, this figure is depicted as the flow chart of air conditioning control method of the present invention first embodiment.
As shown in Figure 1, this embodiment realizes air conditioning control method, to realize the detailed process of wall-hanging air conditioner refrigeration control method specifically as follows:
Step 101: air-conditioning is started shooting, controls compressor operating.
Air-conditioning start after, by set according to user or acquiescence operational mode and operational factor, according to predetermined control program control compressor operating.
Step 102: judge whether air-conditioning enters room temperature PID and control.If so, step 104 is performed; If not, step 103 is performed.
In airconditioning control process, by according to whether entering room temperature PID to the control of compressor control to perform different control, specifically, whether room temperature PID is entered to compressor and controls to be the necessary condition determining whether to compensate indoor temperature.
Wherein, room temperature PID to control to refer to according to the temperature difference of current indoor temperature and indoor objects temperature as control objectives, performs a kind of control procedure that PID controls.And, after air-conditioning start, and non-immediate enters room temperature PID control, generally just enter PID after the certain value that has a narrow range of temperature between current indoor temperature and indoor objects temperature to control, therefore, can judge whether air-conditioner enters room temperature PID and control according to whether the temperature difference between current indoor temperature and indoor objects temperature is little to certain value.In addition, other can also to be adopted in prior art to judge, and whether air-conditioner enters the method that room temperature PID controls and judges.
Step 103: if step 102 judges that air-conditioning does not also enter room temperature PID and controls, conveniently control method controls compressor.
Also namely, control if air-conditioning does not also enter room temperature PID, then do not perform the process that indoor temperature compensates, but conveniently control method controls compressor.Wherein, conventional control methods refers to the control method of existing transducer air conditioning.Such as, the control method of existing air-conditioner is: the temperature difference between indoor temperature and indoor objects temperature is greater than when setting the temperature difference, controls compressor high frequency and runs, until the temperature difference of indoor temperature and indoor objects temperature is not more than the setting temperature difference.So, when compressor operating time does not also reach setting running time, if compressor wants high frequency to run in conventional control methods, then maintenance high frequency running status, make indoor temperature can approach indoor objects temperature fast, rapidly for user provides an indoor environment be comparatively suitable for.
Conveniently control method controls in compressor operating process, still constantly performs and judges whether air-conditioning enters the process of room temperature PID control.
Step 104: if step 102 judges that air-conditioning enters room temperature PID and controls, will compensate indoor temperature, then, utilizes the indoor temperature after compensating to calculate the compressor frequency of room temperature PID control.
Specifically, when judging that air-conditioning enters room temperature PID control, obtaining the current indoor temperature that indoor temperature transmitter detects, as the first indoor temperature, calculating the difference of the first indoor temperature and setting compensation temperature, as the second indoor temperature.
Wherein, setting compensation temperature is the temperature value prestoring, can call at any time, is also obtained by special experiment condition and the test of special test means and be written to the numerical value in accumulator for air conditioner before air-conditioning dispatches from the factory, by air-conditioning research staff.When air-conditioning enters room temperature PID control, meet condition indoor temperature being compensated to control, then obtain the current indoor temperature detected by indoor temperature transmitter, using this current indoor temperature as the first indoor temperature.Then, obtain setting compensation temperature, calculate the difference of the first indoor temperature and setting compensation temperature, using this difference as the second indoor temperature.Then, step 105 is performed.
Step 105: the temperature difference calculating the second indoor temperature and indoor objects temperature, obtains the indoor temperature difference, carries out room temperature PID computing according to the indoor temperature difference, obtains compressor first object frequency.
Wherein, carry out room temperature PID computing according to the indoor temperature difference, obtain and can adopt prior art to realize to the concrete grammar of the target frequency that compressor controls.But unlike the prior art, the indoor temperature calculating the indoor temperature difference is not the temperature that indoor temperature transmitter detects, but the second indoor temperature obtained after temperature-compensating has been carried out to the temperature detected.
Step 106: whether the second indoor temperature that determining step 104 obtains is less than comfort temperature.If so, the fuzzy control of step 108 and subsequent step is performed; Otherwise the room temperature PID performing step 107 controls.
This step 106 can be carried out with step 104 and step 105 simultaneously, is divided into that to describe sequentially be only control procedure in order to clearly state this embodiment at this.After step 104 obtains the second indoor temperature, the comfort temperature of the second indoor temperature and setting is made comparisons, and judge whether the second indoor temperature is less than comfort temperature.Wherein, comfort temperature can be a default setting temperature of air-conditioning when dispatching from the factory, and also can be selected voluntarily by user and arrange design temperature.If by user's sets itself, air-conditioning can provide a reference temperature value, for reference.Such as, advise this comfort temperature to be set as 27 DEG C.
Step 107: if the second indoor temperature is not less than comfort temperature, performs room temperature PID and controls, according to first object FREQUENCY CONTROL compressor.
If step 106 judges that the second indoor temperature is not less than comfort temperature, show that now indoor temperature is higher, then perform room temperature PID and control, according to first object FREQUENCY CONTROL compressor, make indoor temperature fast cooling to indoor objects temperature.
Step 108: if the second indoor temperature is less than comfort temperature, performs fuzzy control.
If step 106 judges that indoor temperature is less than comfort temperature, cause body sense uncomfortable for avoiding the too fast decline of temperature, perform fuzzy control, so that adjustment compressor operating frequency in time, make evaporator coil temperature can be stabilized to coil pipe target temperature, to adjust air conditioning exhausting temperature, reach cool and not cold comfortable air-out effect.The process of concrete fuzzy control see step 109 below to the description of step 112.
Step 109: the coil temperature detecting evaporimeter.
The detection of the coil temperature of evaporimeter detects by set temperature sensor on evaporator coil.
Step 110: judge whether coil temperature is greater than coil pipe target temperature.If so, step 112 is performed; Otherwise, perform step 111.
After step 109 detects coil temperature, the coil pipe target temperature of coil temperature and setting is made comparisons, and judge whether coil temperature is greater than coil pipe target temperature.Wherein, coil pipe target temperature can be a default setting temperature of air-conditioning when dispatching from the factory, and can certainly be selected voluntarily by user and arrange design temperature.If by user's sets itself, because user is not very clear and definite for the concept of coil temperature and the performance indications of representative thereof, preferably provide a reference temperature value by air-conditioning, for reference selected.Such as, advise this coil pipe target temperature to be set as 14 DEG C.
Step 111: if coil temperature is not more than coil pipe target temperature, reduces acquisition second target frequency by compressor current operation frequency, controls compressor according to the smaller value in the second target frequency and first object frequency.
If step 110 judges that coil temperature is not more than coil pipe target temperature, show that coil temperature is on the low side, easily cause air conditioning exhausting temperature on the low side and send cold wind.For solving this problem, compressor current operation frequency being reduced and obtains the second target frequency.Then, compressor operating is controlled according to the smaller value in the second target frequency and first object frequency.
Compressor current operation frequency is reduced to the second target frequency, and object is that coil temperature can be approached to coil pipe target temperature.Meanwhile, consider the stability that air-conditioning system is run, make indoor temperature approach indoor objects temperature, also need to take into account the control of room temperature PID to indoor temperature.Thus, the first object frequency the second target frequency and room temperature PID calculated is made comparisons, and selects smaller value wherein to control compressor operating.
Step 112: if coil temperature is greater than coil pipe target temperature, according to first object FREQUENCY CONTROL compressor.
If step 110 judges that coil temperature is greater than coil pipe target temperature, air conditioning exhausting temperature can not be on the low side, thus, using the adjustment of room temperature as main target, according to the first object FREQUENCY CONTROL compressor operating that room temperature PID calculates.
As preferred embodiment, in this embodiment, after the fuzzy control entering into step 108, preset the highest frequency of a highest frequency as comfortable cooling, no matter be control compressor according to first object frequency or according to the second target frequency, all ensure that the frequency of compressor is no more than the highest frequency of setting.That is, if first object frequency or the second target frequency are greater than highest frequency, then control compressor operating according to highest frequency.
As previously indicated, when air-conditioner running refrigerating pattern, the temperature that indoor temperature transmitter detects is higher than the temperature in user's main activities space.If the temperature still detected according to indoor temperature transmitter participates in PID arithmetic as indoor temperature, indoor temperature difference during PID arithmetic is bigger than normal, the compressor target frequency calculated is higher, controls compressor and runs according to higher target frequency, cause air-conditioner energy consumption bigger than normal.And adopt the method for this embodiment, first the indoor temperature of detection is deducted a compensation temperature, obtain the second indoor temperature being less than the current indoor temperature of detection, and this second indoor temperature reflects the temperature in user's main activities space more realistically.When the second indoor temperature utilizing this less than normal participates in PID arithmetic, can obtain less compressor target frequency, the target frequency utilizing this less controls compressor operating, reduces energy consumption.And, because this second indoor temperature reflects the temperature in user's main activities space more realistically, thus, the indoor temperature after regulating also can be made more close to indoor design temperature, and there will not be the problem of overshoot, while satisfied temperature regulates comfortableness, reduce air-conditioner energy consumption.Meanwhile, by arranging comfort temperature, the second indoor temperature and comfort temperature being made comparisons, when indoor temperature is higher, adopts the room temperature PID after compensating to control compressor operating, make indoor temperature fast cooling and approach indoor objects temperature; And when indoor temperature is less than comfort temperature, adopt the fuzzy control based on evaporator coil temperature, select the FREQUENCY CONTROL compressor of room temperature PID or reduction, the basis approaching indoor objects temperature making indoor temperature make coil temperature approach coil pipe design temperature, both met room temperature to regulate, realize again the comfortableness of air conditioning exhausting, reach cool and not cold refrigeration.
It should be noted that, in the process performing fuzzy control, still constantly compare the size of the second indoor temperature and comfort temperature.Once indoor temperature is not less than comfort temperature, then exit fuzzy control process, be transferred to room temperature PID control procedure.
And, in whole control procedure, not compressor runs the compensation just performing indoor temperature at the beginning, but first keep compressor conveniently control strategy operation, ensure that indoor temperature can conveniently control mode, rapidly near indoor objects temperature, the speed of indoor temperature comfort conditioning can not be affected.
In the above-described embodiments, performing how many temperature-compensatings to indoor temperature, is concern the key factor that air-conditioner controls comfortableness and energy saving.Also namely, selecting of setting compensation temperature is key factor wherein.
As preferred embodiment, the setting compensation temperature prestore, called at any time is a compensation temperature corresponding with indoor objects temperature and outdoor temperature.Determine setting compensation temperature based on indoor objects temperature and outdoor temperature, can realize the Reasonable Regulation And Control of function of temperature compensation control in degree of compensation based on operation of air conditioner load, reach the equilibrium of Thermal comfort adjustment and low energy consumption energy saving.
And what prestore in air-conditioning is indoor objects temperature range, outdoor temperature scope and the multiple running time corresponding with indoor objects temperature range and outdoor temperature scope and multiple compensation temperature.When performing function of temperature compensation control in operation of air conditioner process, setting compensation temperature is called by following process:
Current indoor target temperature and the indoor objects temperature range prestored are made comparisons, judges the indoor objects temperature range belonging to current indoor target temperature; Current outdoor temperature and the outdoor temperature scope prestored are made comparisons, judges the outdoor temperature scope belonging to current outdoor temperature; According to searching in that prestore, corresponding with indoor objects temperature range and outdoor temperature scope multiple compensation temperatures with the indoor objects temperature range belonging to current indoor target temperature and the corresponding compensation temperature of the outdoor temperature scope belonging to current outdoor temperature as setting compensation temperature, and call.
The above-mentioned mode with temperature range is determined and is called setting compensation temperature, and data processing amount is little, and control procedure is simple, is more conducive to carrying out controlling in time, effectively to air-conditioner, improves the speed that Thermal comfort regulates, and reduces operation energy consumption.
The flow chart of air conditioning control method of the present invention second embodiment shown in Figure 2, specifically, this second embodiment is an idiographic flow for fuzzy control.Except fuzzy control process and Fig. 1 first embodiment is different, the processes such as the compensation of remaining indoor temperature, room temperature PID computing, room temperature PID control are identical with first embodiment, are not specifically addressed at this.Only describe in detail as follows with regard to the fuzzy control process of this embodiment below:
Step 42: perform fuzzy control.
Step 421: the coil temperature detecting evaporimeter.
The detection of the coil temperature of evaporimeter detects by set temperature sensor on evaporator coil.
Step 422: judge whether coil temperature is greater than coil pipe target temperature.If so, 427 are gone to step; Otherwise, perform step 423.
This step more specific description is see the description of Fig. 1 embodiment step 412.
Step 423: judge whether coil temperature is not more than coil pipe target temperature first.If so, step 424 is performed; Otherwise, perform step 425.
If step 422 judges that coil temperature is not more than coil pipe target temperature, then be not more than first after determining whether start, and perform different process according to judged result.
Step 424: if coil temperature is not more than coil pipe target temperature first after start, then the minimum frequency that will freeze is as the second target frequency.Then, step 426 is performed.
Refrigeration minimum frequency is the minimum frequency of the setting in air conditioner refrigerating running.General, be the parameter namely set before air-conditioning dispatches from the factory at refrigeration minimum frequency.
Step 425: if coil temperature is non-ly not more than coil pipe target temperature first after start, then compressor current operation frequency is reduced, obtain the second target frequency between current operation frequency and refrigeration minimum frequency.
Be not more than coil pipe target temperature first if non-after coil temperature start, then read the current operation frequency of compressor, then the second target frequency is chosen to be a frequency values between current operation frequency and refrigeration minimum frequency.Then, step 426 is performed.
Step 426: control compressor according to the smaller value in the second target frequency and the first object frequency that draws according to room temperature PID computing.
Wherein, the calculating of first object frequency is see the description of Fig. 1 embodiment, and the second target frequency refers to according to step 424 or the determined target frequency of step 425.And the refrigeration minimum frequency in step 424 is the frequency values being not more than first object frequency, thus, if be not more than coil pipe target temperature first after coil temperature start, control compressor and run with the minimum frequency that freezes.
If coil temperature is not more than coil pipe target temperature first, for avoiding the reduction of air conditioning exhausting temperature to cause air-out to be cold wind, first the frequency of compressor is defined as refrigeration minimum frequency, makes coil temperature rise to coil pipe design temperature as early as possible.If coil temperature is non-be not more than coil pipe target temperature first, show to perform fuzzy control, then coil temperature can not too lower than coil pipe target temperature, now, second target frequency is unnecessary near minimum, but between current operation frequency and refrigeration minimum frequency, to take into account the speed that room temperature regulates.
It should be noted that equally, in the process performing fuzzy control, still constantly compare the size of indoor temperature and comfort temperature.Once indoor temperature is not less than comfort temperature, then exit fuzzy control process, be transferred to room temperature PID control procedure.
For the determination of the second target frequency in step 425, multiple method can be selected, preferably adopt the method shown in Fig. 3.
Refer to Fig. 3, the figure shows in Fig. 2 coil temperature is non-be not more than coil pipe design temperature first after determine a particular flow sheet of the second target frequency.
As shown in Figure 3, coil temperature is non-be not more than coil pipe design temperature first after determine that the process of the second target frequency is as follows:
Step 4251: obtain compressor current operation frequency.
Step 4252: compressor current operation frequency is reduced adjusting frequency of setting, and the frequency after reduction is as the second target frequency.
Setting adjust frequency for air-conditioning dispatch from the factory before a pre-set frequency values, or be a frequency values of user's sets itself, such as, be set as 5Hz.This frequency values, as a frequency adjustment step-length, represents each reduction amplitude to current operation frequency.And this embodiment adopts every setting regulation time reduction mode once the reduction of frequency, realize progressively regulating, and the frequency after reducing is as the second target frequency.
Step 4253: judge whether the difference of coil pipe design temperature and coil temperature is greater than overshoot temperature value.If so, step 4254 is performed; Otherwise, go to step 4255.
After current operation frequency reduction is adjusted frequency, first judge whether the difference of coil pipe design temperature and coil temperature is greater than overshoot temperature value.Wherein, overshoot temperature value is also the temperature value of a setting, such as, is set as 1 DEG C.
Step 4254: if the difference of coil pipe design temperature and coil temperature is greater than overshoot temperature value, judges whether to arrive regulation time.If so, go to step 4251, continue the adjustment process performing frequency reduction.Otherwise, perform step 4255.
Step 4255: the second target frequency remains unchanged.
If step 4253 judges that the difference of coil pipe design temperature and coil temperature is greater than overshoot temperature value, show that coil temperature is far below coil pipe design temperature, still needs further frequency reducing.And as previously mentioned, down conversion process process is that the regulation time of interval setting reduces once.Regulation time is also a pre-set value, represents the interval time of frequency adjustment.Such as, 2min can be set as.Also, namely, after adjustment once, first using the frequency after adjustment as the second target frequency, when regulation time does not reach, keep the second target frequency constant.Compressor operating is controlled, until exit fuzzy control and enter into room temperature PID control or shutdown with the smaller value in this second target frequency and first object frequency.After regulation time arrives, then reading compressor current operation frequency, based on current operation frequency, continuing to carry out frequency reducing according to adjusting frequency.
And if step 4253 judges that the difference of coil pipe design temperature and coil temperature is not more than overshoot temperature value, though show that coil temperature does not also arrive coil pipe target temperature, but it is less with the difference of coil pipe target temperature, be not more than overshoot temperature value, now, then no longer reduce frequency, to avoid the overshoot occurring coil temperature, and affect room temperature governing speed.Thus, keep the second target frequency of step 4252 constant, and control compressor operating with the smaller value in this second target frequency and first object frequency, until exit fuzzy control and enter into room temperature PID control or shutdown.
Run in control procedure at the air conditioner refrigerating of the various embodiments described above, if the non-wind speed setting of user, then control air-conditioning draught fan and run according to highest wind velocity, because under same refrigerating capacity, the leaving air temp of high wind speed is higher than the leaving air temp of low wind speed, guarantees that leaving air temp can not be too low further.And if the wind speed that user sets detected, then control blower fan according to setting wind speed run.
Above embodiment only in order to technical scheme of the present invention to be described, but not is limited; Although with reference to previous embodiment to invention has been detailed description, for the person of ordinary skill of the art, still can modify to the technical scheme described in previous embodiment, or equivalent replacement is carried out to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of the present invention's technical scheme required for protection.
Claims (8)
1. an air conditioning control method, described air-conditioning is wall-hanging air conditioner, it is characterized in that, described method comprises:
Air-conditioning start running refrigerating pattern, when air-conditioning enters room temperature PID control, obtain the current indoor temperature that indoor temperature transmitter detects, as the first indoor temperature, using the difference of described first indoor temperature and setting compensation temperature as the second indoor temperature, calculate the temperature difference between described second indoor temperature and current indoor target temperature, obtain the indoor temperature difference, carry out room temperature PID computing according to the described indoor temperature difference, obtain first object frequency;
The comfort temperature of described second indoor temperature and setting is made comparisons;
If described second indoor temperature is not less than described comfort temperature, performs following room temperature PID and control:
Compressor according to described first object FREQUENCY CONTROL;
If described second indoor temperature is less than described comfort temperature, perform following fuzzy control:
Detect the coil temperature of the evaporimeter of air-conditioning, the coil pipe target temperature of described coil temperature and setting is made comparisons; If described coil temperature is greater than described coil pipe target temperature, compressor according to described first object FREQUENCY CONTROL; If described coil temperature is not more than described coil pipe target temperature, the current operation frequency of described compressor is reduced acquisition second target frequency, controls described compressor according to the smaller value in described second target frequency and described first object frequency.
2. air conditioning control method according to claim 1, is characterized in that, described setting compensation temperature prestores and call, corresponding with described current indoor target temperature and described current outdoor temperature compensation temperature.
3. air conditioning control method according to claim 2, is characterized in that, described setting compensation temperature is by following method call:
Described current indoor target temperature and the indoor objects temperature range prestored are made comparisons, judges the indoor objects temperature range belonging to described current indoor target temperature; Described current outdoor temperature and the outdoor temperature scope prestored are made comparisons, judges the outdoor temperature scope belonging to described current outdoor temperature; According to searching in that prestore, corresponding with indoor objects temperature range and outdoor temperature scope multiple compensation temperatures with the indoor objects temperature range belonging to described current indoor target temperature and the corresponding compensation temperature of the outdoor temperature scope belonging to described current outdoor temperature as described setting compensation temperature, and call.
4. air conditioning control method according to any one of claim 1 to 3, is characterized in that, if described coil temperature is not more than described coil pipe target temperature first after air-conditioning start, described second target frequency is the refrigeration minimum frequency of setting; If described coil temperature is non-after air-conditioning start be not more than described coil pipe target temperature first, described second target frequency is between described current operation frequency and described refrigeration minimum frequency.
5. air conditioning control method according to claim 4, is characterized in that, if described coil temperature is non-after air-conditioning start be not more than described coil pipe target temperature first, described second target frequency adopts following method to determine:
If described coil temperature is non-after air-conditioning start be not more than described coil pipe target temperature first, obtain the described current operation frequency of described compressor, described current operation frequency is reduced adjusting frequency of setting by the regulation time every setting, and the frequency after reduction is described second target frequency.
6. air conditioning control method according to claim 5, it is characterized in that, described current operation frequency is reduced adjusting frequency after described second target frequency of setting at every turn, first judge whether the difference of described coil pipe target temperature and described coil temperature is not less than the overshoot temperature value of setting; If so, continue to perform after described regulation time arrives to adjust frequency as the process of described second target frequency described in described current operation frequency reduces, otherwise, keep described second target frequency constant.
7. air conditioning control method according to claim 1, it is characterized in that, when performing described fuzzy control, if the smaller value in described first object frequency and described second target frequency is greater than the highest frequency of setting, then control described compressor according to described highest frequency.
8. air conditioning control method according to claim 1, is characterized in that, in air conditioner refrigerating running, if the wind speed that user sets detected, then the blower fan controlling air-conditioning runs according to the wind speed of described setting; Otherwise, control described blower fan and run according to highest wind velocity.
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