CN103062866A - Energy saving control method, energy saving control system and air conditioner - Google Patents

Energy saving control method, energy saving control system and air conditioner Download PDF

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Publication number
CN103062866A
CN103062866A CN2013100029255A CN201310002925A CN103062866A CN 103062866 A CN103062866 A CN 103062866A CN 2013100029255 A CN2013100029255 A CN 2013100029255A CN 201310002925 A CN201310002925 A CN 201310002925A CN 103062866 A CN103062866 A CN 103062866A
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environment temperature
temperature
comparisons
energy efficiency
high energy
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滕建文
李金波
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GD Midea Air Conditioning Equipment Co Ltd
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Guangdong Midea Refrigeration Equipment Co Ltd
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Abstract

The invention discloses an energy saving control method, an energy saving control system and an air conditioner. The energy saving control method includes detecting environmental temperatures; judging whether the difference between the indoor environmental temperature of the environmental temperatures and a set temperature is lower than a critical temperature or not; calling a corresponding highest energy efficiency comparison table according to a judgment result, and inquiring the optimal running frequency of a compressor in the corresponding highest energy efficiency comparison table; and controlling the compressor to run at the optimal running frequency. The optimal running frequency of the compressor is matched with the environmental temperatures. Accordingly, the environmental temperatures under different working conditions are detected, the difference between the indoor environmental temperature and the set temperature is compared to the critical temperature, and the corresponding highest energy efficiency comparison table is called according to a comparison result, the compressor is controlled to run at the optimal running frequency, the air conditioner keeps running in a state with the highest energy efficiency, and an energy saving effect of the air conditioner is improved.

Description

Energy-saving control method, system and air-conditioner
Technical field
The present invention relates to the air-conditioner technical field, the air-conditioner that especially relates to a kind of energy-saving control method, system and have this energy-saving control system.
Background technology
Air-conditioner is when refrigeration or heating operation, under a certain working condition, also namely under a certain environment temperature state, along with the running frequency rising of compressor, the rear reduction that raises first of the Energy Efficiency Ratio of air-conditioner, the running frequency that the Energy Efficiency Ratio peak is corresponding then is the optimum operation frequency of compressor.Under different working conditions, also namely under different environment temperature states, the optimum operation frequency that the Energy Efficiency Ratio peak is corresponding is different, also is optimum operation frequencies corresponding to different working conditions.
Be illustrated in figure 1 as the Energy Efficiency Ratio of the air-conditioner that carries duplex cylinder compressor and the graph of relation of running frequency, wherein abscissa is the running frequency of compressor in the air-conditioner, and ordinate is the Energy Efficiency Ratio of air-conditioner.When operating mode 1, curve 11 is the efficiency curve of compressor when moving with single cylinder, and curve 12 is the efficiency curve of compressor when moving with twin-tub; The ordinate of the peak of curve 11 is the high energy efficiency ratio EER1c1 of air-conditioner, and its corresponding optimum operation frequency is CF1c1, under this operating mode, if compressor with the operation of frequency CF1c1 single cylinder, then air-conditioner can reach best energy-saving effect; The ordinate of the peak of curve 12 is the high energy efficiency ratio EER2c1 of air-conditioner, and its corresponding optimum operation frequency is CF2c1, under this operating mode, if compressor with the operation of frequency CF2c1 twin-tub, then air-conditioner can reach best energy-saving effect.When operating mode 2, curve 21 is the efficiency curve of compressor when moving with single cylinder, and curve 22 is the efficiency curve of compressor when moving with twin-tub; The ordinate of the peak of curve 21 is the high energy efficiency ratio EER1c2 of air-conditioner, and its corresponding optimum operation frequency is CF1c2, under this operating mode, if compressor with the operation of frequency CF1c2 single cylinder, then air-conditioner can reach best energy-saving effect; The ordinate of the peak of curve 22 is the high energy efficiency ratio EER2c2 of air-conditioner, and its corresponding optimum operation frequency is CF2c2, under this operating mode, if compressor with the operation of frequency CF2c2 twin-tub, then air-conditioner can reach best energy-saving effect.
Simultaneously, as can be seen from Figure, under the same operating condition, compressor single cylinder when operation the corresponding optimum operation frequency of high energy efficiency ratio, the corresponding optimum operation frequency of high energy efficiency ratio is little during the operation of ratio piston compressor twin-tub.Accordingly, consider the comfortableness of air-conditioning, when the temperature difference of indoor environment temperature and design temperature was larger, the refrigeration that indoor needs are larger or heating capacity needed the larger frequency of operation, and therefore this moment, compressor was suitable with optimum operation frequency twin-tub running and comparing; When the temperature difference of indoor temperature and design temperature hour, refrigeration or the heating capacity of indoor needs are less, move less frequency and get final product, so compressor is suitable with optimum operation frequency single cylinder running and comparing at this moment.
But existing air-conditioner all is along with diminishing of loading, and the running frequency of compressor is slowly reduced by incipient peak (such as 90Hz) beginning, may reach at last minimum (such as 10Hz).When running frequency was higher, its corresponding Energy Efficiency Ratio was lower; When running frequency was low, its corresponding Energy Efficiency Ratio was also lower, therefore relatively power consumption.Thereby in the whole process of air-conditioner operation, the most of the time all is in the lower state of Energy Efficiency Ratio, thereby makes air-conditioner not reach best energy-saving effect.
Summary of the invention
Main purpose of the present invention is to provide a kind of energy-saving control method, system and air-conditioner, is intended to improve the energy-saving effect of air-conditioner.
To achieve these objectives, the present invention proposes a kind of energy-saving control method, comprises step:
The testing environment temperature;
Judge that whether the temperature difference of indoor environment temperature in the described environment temperature and design temperature is less than critical-temperature;
Call accordingly the high energy efficiency table of comparisons according to judged result, in the corresponding high energy efficiency table of comparisons of inquiry with the compressor optimum operation frequency of described environment temperature coupling;
The control compressor moves with the optimum operation frequency.
Preferably, describedly call accordingly according to judged result that the high energy efficiency table of comparisons comprises:
If the indoor environment temperature in the described environment temperature and the temperature difference of design temperature, are then called single cylinder less than critical-temperature and are moved the high energy efficiency table of comparisons;
If the indoor environment temperature in the described environment temperature and the temperature difference of design temperature are not less than critical-temperature, then call twin-tub and move the high energy efficiency table of comparisons.
The compressor optimum operation frequency of preferably, mating with described environment temperature in the accordingly high energy efficiency table of comparisons of described inquiry comprises:
Judge in the accordingly high energy efficiency table of comparisons whether corresponding environment temperature is arranged;
If have, then the environment temperature according to correspondence directly matches corresponding optimum operation frequency.
Preferably, whether have the step of corresponding environment temperature also to comprise afterwards in the accordingly high energy efficiency table of comparisons of described judgement:
If nothing is then in searching immediate environment temperature in the high energy efficiency table of comparisons accordingly;
Directly match corresponding optimum operation frequency according to immediate environment temperature.
Preferably, whether have the step of corresponding environment temperature also to comprise afterwards in the accordingly high energy efficiency table of comparisons of described judgement:
If nothing, then in the corresponding high energy efficiency table of comparisons, search and environment temperature before and after immediate two approximately ambient temperatures;
Directly match corresponding two near optimal running frequencies according to two approximately ambient temperatures;
Utilize interpolation method, calculate according to environment temperature, two approximately ambient temperatures and two near optimal running frequencies and match corresponding optimum operation frequency.
Preferably, described critical-temperature is T0, and 0.5 ℃≤T0≤4 ℃.
The present invention proposes a kind of energy-saving control system of air-conditioner simultaneously, comprises temperature detecting unit, memory cell, analysis and processing unit and execution control module, wherein:
Temperature detecting unit is for detection of environment temperature and be sent to analysis and processing unit;
Memory cell is used for storage critical-temperature and the high energy efficiency table of comparisons;
Analysis and processing unit, be used for judging that whether the temperature difference of the indoor environment temperature of environment temperature and design temperature is less than critical-temperature, call accordingly the high energy efficiency table of comparisons according to judged result, in the corresponding high energy efficiency table of comparisons of inquiry with the compressor optimum operation frequency of described environment temperature coupling;
Carry out control module, be used for receiving the optimum operation frequency, the control compressor moves with the optimum operation frequency.
Preferably, described analysis and processing unit is used for also judging whether the accordingly high energy efficiency table of comparisons has corresponding environment temperature; If have, then directly match corresponding optimum operation frequency according to environment temperature.
Preferably, if described analysis and processing unit also is used for judging the environment temperature without corresponding, then in searching immediate environment temperature in the high energy efficiency table of comparisons accordingly; Directly match corresponding optimum operation frequency according to immediate environment temperature.
Preferably, if described analysis and processing unit also is used for judging the environment temperature without corresponding, then in the high energy efficiency table of comparisons, search and environment temperature before and after immediate two approximately ambient temperatures; Directly match corresponding two near optimal running frequencies according to two approximately ambient temperatures; Utilize interpolation method, calculate according to environment temperature, two approximately ambient temperatures and two near optimal running frequencies and match corresponding optimum operation frequency.
Preferably, the described high energy efficiency table of comparisons comprises that single cylinder moves the high energy efficiency table of comparisons and twin-tub moves the high energy efficiency table of comparisons, and described analysis and processing unit is used for:
If judge the temperature difference of indoor environment temperature and design temperature less than critical-temperature, then inquire about single cylinder and move the high energy efficiency table of comparisons;
Be not less than critical-temperature if judge the temperature difference of indoor environment temperature and design temperature, then inquire about twin-tub and move the high energy efficiency table of comparisons.
Preferably, described critical-temperature is T0, and 0.5 ℃≤T0≤4 ℃.
The present invention also proposes a kind of air-conditioner, and it comprises an energy-saving control system, and described energy-saving control system comprises temperature detecting unit, memory cell, analysis and processing unit and execution control module, wherein:
Temperature detecting unit is for detection of environment temperature and be sent to analysis and processing unit;
Memory cell is used for storage critical-temperature and the high energy efficiency table of comparisons;
Analysis and processing unit, be used for judging that whether the temperature difference of the indoor environment temperature of environment temperature and design temperature is less than critical-temperature, call accordingly the high energy efficiency table of comparisons according to judged result, in the corresponding high energy efficiency table of comparisons of inquiry with the compressor optimum operation frequency of described environment temperature coupling;
Carry out control module, be used for receiving the optimum operation frequency, the control compressor moves with the optimum operation frequency.
A kind of energy-saving control method provided by the present invention, by the detection to the environment temperature under the different working conditions, the temperature difference of indoor environment temperature and design temperature is compared with critical-temperature, call the accordingly high energy efficiency table of comparisons according to comparing result, and utilizing environment temperature to match corresponding optimum operation frequency in the high energy efficiency table of comparisons accordingly, the control compressor moves with the optimum operation frequency, thereby so that the air-conditioner operation time is in the highest state of Energy Efficiency Ratio always, improved the energy-saving effect of air-conditioner.
Description of drawings
Fig. 1 is the graph of relation of Energy Efficiency Ratio and the running frequency of air-conditioner;
Fig. 2 is the flow chart of energy-saving control method the first embodiment of the present invention;
Fig. 3 is that the single cylinder of energy-saving control method of the present invention moves the high energy efficiency table of comparisons;
Fig. 4 is that the twin-tub of energy-saving control method of the present invention moves the high energy efficiency table of comparisons
Fig. 5 is the flow chart of energy-saving control method the second embodiment of the present invention;
Fig. 6 is the flow chart of energy-saving control method the 3rd embodiment of the present invention;
Fig. 7 is the structural representation of energy-saving control system one embodiment of the present invention.
The realization of the object of the invention, functional characteristics and advantage are described further with reference to accompanying drawing in connection with embodiment.
The specific embodiment
Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
Referring to energy-saving control method of the present invention the first embodiment shown in Figure 2, described energy-saving control method is mainly used in air-conditioner, and it may further comprise the steps:
Step S101, testing environment temperature.
This step 101 real-time testing environment temperature, this environment temperature comprises indoor environment temperature T1 at least, as preferably, the environment temperature in the present embodiment also comprises outdoor environment temperature T4.
Step S102, judge that whether the temperature difference of indoor environment temperature in the environment temperature and design temperature is less than critical-temperature.
This step S102 calculates the temperature difference between the temperature that indoor environment temperature and user set, if the temperature difference is less, and then less heat or refrigerating capacity just can reach design temperature, so can move less frequency; If the temperature difference is larger, then need larger heat or cold just can reach design temperature, therefore need the larger frequency of operation.0.5 ℃≤T0 of critical-temperature T0 value≤4 ℃, preferred 1 ℃≤T0≤3 ℃.
If step S103 then calls single cylinder and moves the high energy efficiency table of comparisons.
If judge the temperature difference less than critical-temperature, then to call single cylinder and move the high energy efficiency table of comparisons, the optimum operation frequency values is lower when moving because of single cylinder, operation when the suitable temperature difference is less.As shown in Figure 3, single cylinder moves the optimum operation frequency F that comprises indoor environment temperature T1, outdoor environment temperature T4 and single cylinder operation in the high energy efficiency table of comparisons, and each indoor environment temperature T1 and the corresponding optimum operation frequency F of outdoor environment temperature.In conjunction with the part form that moves the high energy efficiency table of comparisons referring to single cylinder shown in Figure 3, this form top the first behavior outdoor environment temperature T4 comprises N data; Indoor environment temperature T1 is classified on the left side first as, comprises M data; Data corresponding to each indoor environment temperature T1 and outdoor environment temperature T4 numerical value intersection are optimum operation frequency F in the form, comprise N*M data.Wherein M, N value are the natural number more than or equal to 1, in order to adapt to more working condition, M, N value are preferably greater than and equal 5, and also namely T1 and the T4 in the high energy efficiency table of comparisons comprises 5 data values at least, thereby optimum operation frequency F corresponding to T1 and T4 has 5*5=25 data value.The single cylinder of present embodiment moves in the high energy efficiency table of comparisons and has listed 14 T1 data values and 16 T4 data values, and then optimum operation frequency F has 14*16=224.
Step S104, if not then calls twin-tub and moves the high energy efficiency table of comparisons.
If judge the temperature difference more than or equal to critical-temperature, then to call twin-tub and move the high energy efficiency table of comparisons, the optimum operation frequency values is higher when moving because of twin-tub, and operation when the suitable temperature difference is larger is to obtain larger heating or refrigerating capacity.As shown in Figure 4, twin-tub moves the high energy efficiency table of comparisons and single cylinder, and to move high energy efficiency contrast tableau format identical, the twin-tub of present embodiment moves in the high energy efficiency table of comparisons and has listed 14 T1 data values and 16 T4 data values, and then optimum operation frequency F has 14*16=224.
The compressor optimum operation frequency of mating with environment temperature in step S105, the accordingly high energy efficiency table of comparisons of inquiry.
For example, if indoor environment temperature T1 is 22 ℃ in the environment temperature that detects, outdoor environment temperature T4 is 30 ℃, user's design temperature is 20 ℃, 3 ℃ of critical-temperature T0 values, the temperature difference of indoor environment temperature and design temperature is 2 ℃, and less than critical-temperature, then to move the optimum operation frequency F that the high energy efficiency table of comparisons obtains the single cylinder operation be 11HZ to as shown in Figure 3 single cylinder of inquiry; If indoor environment temperature T1 is 22 ℃ in the environment temperature that detects, outdoor environment temperature T4 is 30 ℃, user's design temperature is 18 ℃, 3 ℃ of critical-temperature T0 values, the temperature difference of indoor environment temperature and design temperature is 4 ℃, greater than critical-temperature, then to move the optimum operation frequency F that the high energy efficiency table of comparisons obtains the twin-tub operation be 21HZ to as shown in Figure 4 twin-tub of inquiry.
In addition, in the high energy efficiency table of comparisons indoor environment temperature and optimum operation frequency can only be arranged also, by optimum operation frequency values of an indoor environment temperature value coupling.
Step S106, control compressor move with the optimum operation frequency.
Among this step S106, after matching optimum operation frequency F, just control compressor according to this optimum operation frequency F operation, so that the Energy Efficiency Ratio of air-conditioner reaches the highest.As the optimum operation frequency F that matches single cylinder operation is 11HZ, then controls compressor and moves with the 11HZ single cylinder; As the optimum operation frequency F that matches twin-tub operation is 21HZ, then controls compressor and moves with the 21HZ twin-tub.If do not have corresponding environment temperature in the high energy efficiency table of comparisons accordingly, can not do any response, keep original running frequency operation.The power-efficient data of collecting in the corresponding high energy efficiency table of comparisons is more much more substantial, just so that air-conditioner can match corresponding optimum operation frequency under more working condition, and with this optimum operation frequency operation so that the Energy Efficiency Ratio of air-conditioner reaches the highest.
Accordingly, the energy-saving control method of present embodiment, by the detection to the environment temperature under the different working conditions, and the temperature difference of indoor environment temperature and design temperature compared with critical-temperature, call the accordingly high energy efficiency table of comparisons according to comparing result, and utilizing environment temperature to match corresponding optimum operation frequency F in the high energy efficiency table of comparisons accordingly, the control compressor moves with optimum operation frequency F, thereby so that the air-conditioner operation time is in the highest state of Energy Efficiency Ratio always, improved the energy-saving effect of air-conditioner.
Referring to energy-saving control method of the present invention the second embodiment shown in Figure 5, step S101-step S103 and step S105 in the present embodiment are identical with the first embodiment, and difference is that the step S104 to above-described embodiment has carried out refinement, may further comprise the steps:
In step S201, the accordingly high energy efficiency table of comparisons of judgement whether corresponding environment temperature is arranged.
Among this step S201, the corresponding high energy efficiency table of comparisons of inquiry such as single cylinder move the high energy efficiency table of comparisons or twin-tub and move the indoor environment temperature T1 that whether has in the high energy efficiency table of comparisons in the environment temperature that detects and the numerical value of outdoor environment temperature T4.
If step S202 has corresponding environment temperature, then the environment temperature according to correspondence directly matches corresponding optimum operation frequency.
For example, if indoor environment temperature T1 is 22 ℃ in the environment temperature that detects, outdoor environment temperature T4 is 30 ℃, user's design temperature is 20 ℃, and 3 ℃ of critical-temperature T0 values, the temperature difference of indoor environment temperature and design temperature are 2 ℃, less than critical-temperature, then as shown in Figure 3 single cylinder of inquiry moves the high energy efficiency table of comparisons, and corresponding indoor environment temperature and outdoor environment temperature are arranged in the table, and the optimum operation frequency F of the single cylinder operation of their correspondences is 11HZ; If indoor environment temperature T1 is 22 ℃ in the environment temperature that detects, outdoor environment temperature T4 is 30 ℃, user's design temperature is 18 ℃, 3 ℃ of critical-temperature T0 values, the temperature difference of indoor environment temperature and design temperature is 4 ℃, and greater than critical-temperature, then as shown in Figure 4 twin-tub of inquiry moves the high energy efficiency table of comparisons, corresponding indoor environment temperature and outdoor environment temperature are arranged in the table, and the optimum operation frequency F of the twin-tub operation of their correspondences is 21HZ.
If step S203 is without the environment temperature of correspondence, then in searching immediate environment temperature in the high energy efficiency table of comparisons accordingly.
Among this step S203, if detected environment temperature is then searched immediate environment temperature not having corresponding data in the high energy efficiency table of comparisons accordingly in this table.For example, when the inquiry single cylinder moved the high energy efficiency table of comparisons, the T1 row did not have 24.8 ℃ of corresponding indoor environment temperatures in the discovery table, but wherein 25 ℃ are the most approaching with 24.8 ℃, and then 25 ℃ is immediate indoor environment temperature.
Step S204, directly match corresponding optimum operation frequency according to immediate environment temperature.
The optimum operation frequency F that S204 obtains in this step is actually for the near optimal running frequency, and less such as the temperature data interval in the high energy efficiency table of comparisons, data are more, and then this near optimal running frequency is near real optimum operation frequency F.
Single cylinder below in conjunction with Fig. 3 moves the high energy efficiency table of comparisons, and S203 ~ S204 is illustrated to step:
If detecting indoor environment temperature T1 in the environment temperature and be 24.8 ℃, outdoor environment temperature T4 is 33 ℃, the inquiry single cylinder moves the high energy efficiency table of comparisons, and to get immediate indoor environment temperature be 25 ℃, in conjunction with the outdoor environment temperature T4 that has in this table, drawing optimum operation frequency F is 10HZ.
If detecting indoor environment temperature T1 in the environment temperature and be 23 ℃, outdoor environment temperature T4 is 31.2 ℃, the inquiry single cylinder moves the high energy efficiency table of comparisons, and to get immediate outdoor environment temperature be 31 ℃, in conjunction with the indoor environment temperature T1 that has in this table, drawing optimum operation frequency F is 10HZ.
If detecting indoor environment temperature T1 in the environment temperature and be 19.7 ℃, outdoor environment temperature T4 is 26.1 ℃, the inquiry single cylinder moves the high energy efficiency table of comparisons, and to get immediate indoor environment temperature be that 20 ℃, immediate outdoor environment temperature are 26 ℃, and drawing optimum operation frequency F is 12HZ.
Certainly, if the numerical value that detects just is arranged in the centre of the high energy efficiency table of comparisons two numerical value, then can choose one of them numerical value wantonly.
Accordingly, even do not collect the numerical value of detected environment temperature in the high energy efficiency table of comparisons, the energy-saving control method of present embodiment also can match optimum operation frequency F by searching immediate environment temperature, thereby can adapt to various working conditions.
Referring to energy-saving control method of the present invention the 3rd embodiment shown in Figure 6, the difference of present embodiment and the second embodiment is to replace step S203 ~ S204 with step S205 ~ S207, is specially:
If step S205 is without the environment temperature of correspondence, then in the corresponding high energy efficiency table of comparisons, search and environment temperature before and after immediate two approximately ambient temperatures.
Among this step S205, if without the indoor environment temperature T1 of correspondence, then in the corresponding high energy efficiency table of comparisons, search and described indoor environment temperature T1 before and after immediate two approximate indoor environment temperatures; If without the outdoor environment temperature T4 of correspondence, then in the corresponding high energy efficiency table of comparisons, search and described outdoor environment temperature T4 before and after immediate two approximate outdoor environment temperatures.If not only without corresponding indoor environment temperature T1 but also without corresponding outdoor environment temperature T4, then in searching respectively two approximate indoor environment temperatures and two approximate outdoor environment temperatures in the high energy efficiency table of comparisons accordingly.
Step S206, directly match corresponding two near optimal running frequencies according to described two approximately ambient temperatures.
Among this step S206, if without the indoor environment temperature T1 of correspondence, then match two near optimal running frequencies by two approximate indoor environment temperatures and outdoor environment temperature T4; If without the outdoor environment temperature T4 of correspondence, then match two near optimal running frequencies by two approximate outdoor environment temperatures and indoor environment temperature T1; If not only without corresponding indoor environment temperature T1 but also without corresponding outdoor environment temperature T4, then by two approximate outdoor environment temperatures respectively with an approximate indoor environment temperature mate two near optimal running frequencies, mate to get two near optimal running frequencies in addition with another approximate indoor environment temperature.
Step S207, utilize interpolation method, calculate according to described environment temperature, two approximately ambient temperatures and two near optimal running frequencies and match corresponding optimum operation frequency.
Now the twin-tub in conjunction with Fig. 4 moves the high energy efficiency table of comparisons, and S205 ~ S207 illustrates to step:
Example one:
If corresponding indoor environment temperature T1 is arranged without the outdoor environment temperature T4 of correspondence, then in twin-tub move search in the high energy efficiency table of comparisons with described outdoor environment temperature T4 before and after immediate two proximate chamber's external environment temperature T 41 and T42, and T42>T41; Obtain corresponding near optimal running frequency F1 according to proximate chamber's external environment temperature T 41 and indoor environment temperature T1, obtain corresponding near optimal running frequency F2 according to proximate chamber's external environment temperature T 42 and indoor environment temperature T1; Go out described indoor environment temperature T1 and optimum operation frequency F=F1+ (F2-F1) * (T4-T41)/(T42-T41) corresponding to outdoor environment temperature T4 according to interpolation calculation.
For example, detect indoor environment temperature T1 and outdoor environment temperature T4 and be respectively 21 ℃ and 29.5 ℃, searching twin-tub according to these two temperature values moves the high energy efficiency table of comparisons and finds that indoor environment temperature T1 can find corresponding temperature value, outdoor environment temperature T4 can not find corresponding temperature value, then in the described high energy efficiency table of comparisons, find with outdoor environment temperature T4 before and after immediate two approximate outdoor environment temperatures be respectively T41=29 ℃ and T42=30 ℃, and then find two near optimal running frequencies to be respectively F1=21HZ and F2=22HZ, according to interpolation calculation optimum operation frequency F=F1+ (F2-F1) * (T4-T41)/(T42-T41)=21.5HZ.
Example two:
If twin-tub moves in the high energy efficiency table of comparisons corresponding outdoor environment temperature T4 is arranged without corresponding indoor environment temperature T1, then in twin-tub move search in the high energy efficiency table of comparisons and described indoor environment temperature T1 before and after immediate two approximate indoor environment temperature T11 and T12, and T12>T11; Obtain corresponding near optimal running frequency F1 according to approximate indoor environment temperature T11 and outdoor environment temperature T4, obtain corresponding near optimal running frequency F2 according to approximate indoor environment temperature T12 and outdoor environment temperature T4; Go out described indoor environment temperature T1 and optimum operation frequency F=F1+ (F2-F1) * (T1-T11)/(T12-T11) corresponding to outdoor environment temperature T4 according to interpolation calculation.
For example, detect indoor environment temperature T1 and outdoor environment temperature T4 and be respectively 21.5 ℃ and 31 ℃, searching twin-tub according to these two temperature values moves the high energy efficiency table of comparisons and finds that outdoor environment temperature T4 can find corresponding temperature value, indoor environment temperature T1 can not find corresponding temperature value, then in twin-tub move find in the high energy efficiency table of comparisons with indoor environment temperature T1 before and after immediate two approximate indoor environment temperatures be respectively T11=21 ℃ and T12=22 ℃, and then find two near optimal running frequencies to be respectively F1=22HZ and F2=21HZ, according to interpolation calculation optimum operation frequency F=F1+ (F2-F1) * (T1-T11)/(T12-T11)=21.5HZ.
Example three:
If without indoor environment temperature T1 and the outdoor environment temperature T4 of correspondence, then in the described high energy efficiency table of comparisons, search and described indoor environment temperature T1 before and after immediate two approximate indoor environment temperature T11 and T12, and T12>T11; In the described high energy efficiency table of comparisons, search with described outdoor environment temperature T4 before and after immediate two proximate chamber's external environment temperature T 41 and T42, and T42>T41.Obtain corresponding near optimal running frequency F11 according to proximate chamber's external environment temperature T 41 and approximate indoor environment temperature T11, obtain corresponding near optimal running frequency F12 according to proximate chamber's external environment temperature T 42 and approximate indoor environment temperature T11, go out described approximate indoor environment temperature T11 and near optimal running frequency F1=F11+ (F12-F11) * (T4-T41)/(T42-T41) corresponding to outdoor environment temperature T4 according to interpolation calculation.Obtain corresponding near optimal running frequency F21 according to proximate chamber's external environment temperature T 41 and approximate indoor environment temperature T12, obtain corresponding near optimal running frequency F22 according to proximate chamber's external environment temperature T 42 and approximate indoor environment temperature T12, go out described approximate indoor environment temperature T12 and near optimal running frequency F2=F21+ (F22-F21) * (T4-T41)/(T42-T41) corresponding to outdoor environment temperature T4 according to interpolation calculation.Go out described indoor environment temperature T1 and optimum operation frequency F=F1+ (F2-F1) * (T1-T11)/(T12-T11) corresponding to outdoor environment temperature T4 according to interpolation calculation.
For example, detect indoor environment temperature T1 and outdoor environment temperature T4 and be respectively 21.5 ℃ and 29.5 ℃, search the high energy efficiency table of comparisons according to these two temperature values and find all can not find corresponding temperature value, then in the described high energy efficiency table of comparisons, search with indoor environment temperature T1 before and after immediate two approximate indoor environment temperatures be respectively T11=21 ℃ and T12=22 ℃, be respectively T41=29 ℃ and T42=30 ℃ with immediate two approximate outdoor environment temperatures before and after the outdoor environment temperature T4.In the high energy efficiency table of comparisons, find near optimal running frequency F11=21HZ according to T11 and T41, in the high energy efficiency table of comparisons, find near optimal running frequency F12=22HZ according to T11 and T42, near optimal running frequency F1=F11+ (F12-F11) * (T4-T41)/(T42-T41) corresponding according to interpolation calculation T11 and T4=21.5HZ.In the high energy efficiency table of comparisons, find near optimal running frequency F21=20HZ according to T12 and T41, in the high energy efficiency table of comparisons, find near optimal running frequency F22=21HZ according to T12 and T42, according to interpolation calculation T12 and near optimal running frequency F2=F21+ (F22 – F21) * (T4-T41)/(T42-T41)=20.5HZ corresponding to T4.Last optimum operation frequency F=F1+ (F2-F1) * (T1-T11)/(T12-T11) according to interpolation calculation T1 and T4=21HZ.
Accordingly, even detected environment temperature can not find corresponding temperature value under some working condition in the accordingly high energy efficiency table of comparisons, present embodiment also can go out accurately optimum operation frequency F by interpolation calculation, guarantee that air-conditioner can both with optimum operation frequency F operation, further improve the energy-saving effect of air-conditioner under various working conditions.
Certainly, the energy-saving control method among above-mentioned all embodiment is not limited to and is applied to air-conditioner, also can be applied to other similar electrical equipment.
Simultaneously, related optimum operation frequency among above-mentioned all embodiment, be not to be the real optimum operation frequency of Utopian absolutely accurate, but this real optimum operation frequency of infinite approach (the most about deviation ± 2HZ), to improve to greatest extent the energy-saving effect of air-conditioner.
Referring to Fig. 6, energy-saving control system of the present invention one preferred embodiment shown in Figure 7, described energy-saving control system 100 is mainly used in air-conditioner, comprises temperature detecting unit 120, memory cell 130, analysis and processing unit 110 and carries out control module 140.
Temperature detecting unit 120 is used for regularly or the testing environment temperature of not timing and be sent to analysis and processing unit 110, and this environment temperature comprises indoor environment temperature at least, and as preferably, the environment temperature in the present embodiment also comprises outdoor environment temperature.
Memory cell 130 is used for storage critical-temperature and the high energy efficiency table of comparisons, 0.5 ℃≤T0 of critical-temperature T0 value≤4 ℃ wherein, preferred 1 ℃≤T0≤3 ℃.The high energy efficiency table of comparisons comprises that single cylinder moves the high energy efficiency table of comparisons and twin-tub moves the high energy efficiency table of comparisons, the high energy efficiency ratio data under the different working conditions have been comprised in the table, comprise indoor environment temperature T1, outdoor environment temperature and optimum operation frequency F, and each indoor environment temperature T1 and the corresponding optimum operation frequency F of outdoor environment temperature.Form top the first behavior outdoor environment temperature T4 comprises N data; Indoor environment temperature T1 is classified on the left side first as, comprises M data; Data corresponding to each indoor environment temperature T1 and outdoor environment temperature T4 numerical value intersection are optimum operation frequency F in the form, comprise N*M data.Wherein M, N value are the natural number more than or equal to 1, in order to adapt to more working condition, M, N value are preferably greater than and equal 5, and also namely T1 and the T4 in the high energy efficiency table of comparisons comprises 5 data values at least, thereby optimum operation frequency F corresponding to T1 and T4 has 5*5=25 data value.Single cylinder as shown in Figure 3 moves the high energy efficiency table of comparisons and twin-tub shown in Figure 4 and moves the high energy efficiency table of comparisons, has all listed 14 T1 data values and 16 T4 data values in the table, and then optimum operation frequency F has 14*16=224.
Certainly, in the high energy efficiency table of comparisons indoor environment temperature and optimum operation frequency can only be arranged also, by optimum operation frequency values of an indoor environment temperature value coupling.
Analysis and processing unit 110 is used for judging that whether the temperature difference of indoor environment temperature and design temperature is less than critical-temperature, call accordingly the high energy efficiency table of comparisons according to judged result, and in the corresponding high energy efficiency table of comparisons of inquiry with the compressor optimum operation frequency of described environment temperature coupling.For example, if indoor environment temperature T1 is that 25 ℃, outdoor environment temperature T4 are 27 ℃ in the environment temperature that temperature detecting unit 120 detects, user's design temperature is 20 ℃, 2 ℃ of the critical-temperature T0 values of cell stores, the temperature difference that analysis and processing unit 110 is calculated indoor environment temperature T1 and design temperature is 5 ℃, greater than critical-temperature T0, then inquires about twin-tub shown in Figure 4 and moves the high energy efficiency table of comparisons, by T1=25 ℃, T4=27 ℃, matching optimum operation frequency F is 20HZ.
Carry out control module 140, be used for receiving optimum operation frequency F, the control compressor moves with described optimum operation frequency F, so that the Energy Efficiency Ratio of air-conditioner reaches the highest.If moving the optimum operation frequency that the high energy efficiency table of comparisons matches the single cylinder operation by the inquiry single cylinder is 22HZ, then control compressor with the frequency single cylinder operation of 22HZ; If moving the optimum operation frequency that the high energy efficiency table of comparisons matches the twin-tub operation by the inquiry twin-tub is 25HZ, then control compressor with the frequency twin-tub operation of 25HZ.
Accordingly, the energy-saving control system 100 of present embodiment, by the environment temperature under the different working conditions of detection of temperature detecting unit 120 timings or not timing, analysis and processing unit 110 compares the temperature difference of indoor environment temperature and design temperature with critical-temperature, call the accordingly high energy efficiency table of comparisons according to comparing result, and utilizing environment temperature to match corresponding optimum operation frequency F in the high energy efficiency table of comparisons accordingly, carrying out control module 140 receives this optimum operation frequency and then controls compressor and move with this optimum operation frequency F, thereby so that be in the highest state of Energy Efficiency Ratio during operation of air conditioner always, improved the energy-saving effect of air-conditioner.
Further, the analysis and processing unit 110 of present embodiment is used for also judging whether the accordingly high energy efficiency table of comparisons has corresponding environment temperature, if corresponding environment temperature is arranged, then directly matches corresponding optimum operation frequency F according to described environment temperature; If the environment temperature without correspondence, then in the corresponding high energy efficiency table of comparisons, search and described environment temperature before and after immediate two approximately ambient temperatures, directly match corresponding two near optimal running frequencies according to described two approximately ambient temperatures, utilize at last interpolation method, calculate according to described environment temperature, two approximately ambient temperatures and two near optimal running frequencies and match corresponding optimum operation frequency F.
When analysis and processing unit 110 inquiry twin-tub shown in Figure 4 moves the high energy efficiency table of comparisons, for the operating mode without corresponding environment temperature, following three kinds of situations are arranged:
Example one:
If corresponding indoor environment temperature T1 is arranged without the outdoor environment temperature T4 of correspondence, 110 of analysis and processing unit in twin-tub move search in the high energy efficiency table of comparisons with described outdoor environment temperature T4 before and after immediate two proximate chamber's external environment temperature T 41 and T42, and T42>T41; Obtain corresponding near optimal running frequency F1 according to proximate chamber's external environment temperature T 41 and indoor environment temperature T1, obtain corresponding near optimal running frequency F2 according to proximate chamber's external environment temperature T 42 and indoor environment temperature T1; Go out described indoor environment temperature T1 and optimum operation frequency F=F1+ (F2-F1) * (T4-T41)/(T42-T41) corresponding to outdoor environment temperature T4 according to interpolation calculation.
For example, temperature detecting unit 120 detects indoor environment temperature T1 and outdoor environment temperature T4 is respectively 21 ℃ and 29.5 ℃, 110 of analysis and processing unit are searched twin-tub according to these two temperature values and are moved the high energy efficiency table of comparisons and find that indoor environment temperature T1 can find corresponding temperature value, outdoor environment temperature T4 can not find corresponding temperature value, then in the described high energy efficiency table of comparisons, find with outdoor environment temperature T4 before and after immediate two approximate outdoor environment temperatures be respectively T41=29 ℃ and T42=30 ℃, and then find two near optimal running frequencies to be respectively F1=21HZ and F2=22HZ, according to interpolation calculation optimum operation frequency F=F1+ (F2-F1) * (T4-T41)/(T42-T41)=21.5HZ.
Example two:
If twin-tub moves in the high energy efficiency table of comparisons corresponding outdoor environment temperature T4 is arranged without corresponding indoor environment temperature T1,110 of analysis and processing unit in twin-tub move search in the high energy efficiency table of comparisons and described indoor environment temperature T1 before and after immediate two approximate indoor environment temperature T11 and T12, and T12>T11; Obtain corresponding near optimal running frequency F1 according to approximate indoor environment temperature T11 and outdoor environment temperature T4, obtain corresponding near optimal running frequency F2 according to approximate indoor environment temperature T12 and outdoor environment temperature T4; Go out described indoor environment temperature T1 and optimum operation frequency F=F1+ (F2-F1) * (T1-T11)/(T12-T11) corresponding to outdoor environment temperature T4 according to interpolation calculation.
For example, temperature detecting unit 120 detects indoor environment temperature T1 and outdoor environment temperature T4 is respectively 21.5 ℃ and 31 ℃, analysis and processing unit 110 is searched twin-tub according to these two temperature values and is moved the high energy efficiency table of comparisons and find that outdoor environment temperature T4 can find corresponding temperature value, indoor environment temperature T1 can not find corresponding temperature value, then in twin-tub move find in the high energy efficiency table of comparisons with indoor environment temperature T1 before and after immediate two approximate indoor environment temperatures be respectively T11=21 ℃ and T12=22 ℃, and then find two near optimal running frequencies to be respectively F1=22HZ and F2=21HZ, according to interpolation calculation optimum operation frequency F=F1+ (F2-F1) * (T1-T11)/(T12-T11)=21.5HZ.
Example three:
If without indoor environment temperature T1 and the outdoor environment temperature T4 of correspondence, 110 of analysis and processing unit in the described high energy efficiency table of comparisons, search and described indoor environment temperature T1 before and after immediate two approximate indoor environment temperature T11 and T12, and T12>T11; In the described high energy efficiency table of comparisons, search with described outdoor environment temperature T4 before and after immediate two proximate chamber's external environment temperature T 41 and T42, and T42>T41.Obtain corresponding near optimal running frequency F11 according to proximate chamber's external environment temperature T 41 and approximate indoor environment temperature T11, obtain corresponding near optimal running frequency F12 according to proximate chamber's external environment temperature T 42 and approximate indoor environment temperature T11, go out described approximate indoor environment temperature T11 and near optimal running frequency F1=F11+ (F12-F11) * (T4-T41)/(T42-T41) corresponding to outdoor environment temperature T4 according to interpolation calculation.Obtain corresponding near optimal running frequency F21 according to proximate chamber's external environment temperature T 41 and approximate indoor environment temperature T12, obtain corresponding near optimal running frequency F22 according to proximate chamber's external environment temperature T 42 and approximate indoor environment temperature T12, go out described approximate indoor environment temperature T12 and near optimal running frequency F2=F21+ (F22-F21) * (T4-T41)/(T42-T41) corresponding to outdoor environment temperature T4 according to interpolation calculation.Go out described indoor environment temperature T1 and optimum operation frequency F=F1+ (F2-F1) * (T1-T11)/(T12-T11) corresponding to outdoor environment temperature T4 according to interpolation calculation.
For example, temperature detecting unit 120 detects indoor environment temperature T1 and outdoor environment temperature T4 is respectively 21.5 ℃ and 29.5 ℃, analysis and processing unit 110 is searched the high energy efficiency table of comparisons according to these two temperature values and is found all can not find corresponding temperature value, then in the described high energy efficiency table of comparisons, search with indoor environment temperature T1 before and after immediate two approximate indoor environment temperatures be respectively T11=21 ℃ and T12=22 ℃, be respectively T41=29 ℃ and T42=30 ℃ with immediate two approximate outdoor environment temperatures before and after the outdoor environment temperature T4.In the high energy efficiency table of comparisons, find near optimal running frequency F11=21HZ according to T11 and T41, in the high energy efficiency table of comparisons, find near optimal running frequency F12=22HZ according to T11 and T42, near optimal running frequency F1=F11+ (F12-F11) * (T4-T41)/(T42-T41) corresponding according to interpolation calculation T11 and T4=21.5HZ.In the high energy efficiency table of comparisons, find near optimal running frequency F21=20HZ according to T12 and T41, in the high energy efficiency table of comparisons, find near optimal running frequency F22=21HZ according to T12 and T42, according to interpolation calculation T12 and near optimal running frequency F2=F21+ (F22 – F21) * (T4-T41)/(T42-T41)=20.5HZ corresponding to T4.Last optimum operation frequency F=F1+ (F2-F1) * (T1-T11)/(T12-T11) according to interpolation calculation T1 and T4=21HZ.
Accordingly, even detected environment temperature can not find corresponding temperature value under some working condition in the accordingly high energy efficiency table of comparisons, analysis and processing unit 110 in the present embodiment also can go out accurately optimum operation frequency F by interpolation calculation, guarantee that air-conditioner can both with optimum operation frequency F operation, further improve the energy-saving effect of air-conditioner under various working conditions.
In addition, can't find under the working condition of corresponding temperature value in the corresponding high energy efficiency table of comparisons, analysis and processing unit 110 is except utilizing interpolation method accurately to calculate the optimum operation frequency F, the optimum operation frequency F that also can obtain being similar to by estimation.Namely judge the environment temperature of nothing correspondence in the accordingly high energy efficiency table of comparisons when analysis and processing unit 110, then in this table, search and the immediate environment temperature of described environment temperature, directly match corresponding optimum operation frequency F according to immediate environment temperature.Now moving the high energy efficiency table of comparisons in conjunction with single cylinder shown in Figure 3 illustrates:
For example, if it is that 24.8 ℃, outdoor environment temperature T4 are 33 ℃ that temperature detecting unit 120 detects indoor environment temperature T1 in the environment temperature, then analysis and processing unit 110 inquiry single cylinders move the high energy efficiency table of comparisons to get immediate indoor environment temperature are 25 ℃, in conjunction with the outdoor environment temperature T4 that has in this table, drawing optimum operation frequency F is 10HZ.
If it is that 23 ℃, outdoor environment temperature T4 are 31.2 ℃ that temperature detecting unit 120 detects indoor environment temperature T1 in the environment temperature, then analysis and processing unit 110 inquiry single cylinders move the high energy efficiency table of comparisons to get immediate outdoor environment temperature T4 are 31 ℃, in conjunction with the indoor environment temperature T1 that has in this table, drawing optimum operation frequency F is 10HZ.
If it is that 19.7 ℃, outdoor environment temperature T4 are 26.1 ℃ that temperature detecting unit 120 detects indoor environment temperature T1 in the environment temperature, then analysis and processing unit 110 inquiry single cylinders move the high energy efficiency table of comparisons must to be similar to indoor environment temperature are that 20 ℃, approximate outdoor environment temperature are 26 ℃, and drawing optimum operation frequency F is 12HZ.
Certainly, if the numerical value that temperature detecting unit 120 detects just is arranged in the centre of the high energy efficiency table of comparisons two numerical value, then analysis and processing unit 110 can be chosen one of them numerical value wantonly.
In addition, if do not have corresponding environment temperature in the high energy efficiency table of comparisons accordingly, analysis and processing unit 110 also can not done any response, so that air-conditioner keeps original running frequency operation.In the case, single cylinder moves the high energy efficiency table of comparisons or twin-tub, and to move the power-efficient data of collecting in the high energy efficiency table of comparisons more much more substantial, just so that analysis and processing unit 110 can match corresponding optimum operation frequency under more working condition, just can control compressor and move so that the Energy Efficiency Ratio of air-conditioner reaches the highest with this optimum operation frequency and carry out control module 140.
Certainly, the energy-saving control system 100 of above-described embodiment is not limited to and is applied to air-conditioner, also can be applied to other similar electrical equipment.
Simultaneously, related optimum operation frequency in above-described embodiment, be not to be the real optimum operation frequency of Utopian absolutely accurate, but this real optimum operation frequency of infinite approach (the most about deviation ± 2HZ), to improve to greatest extent the energy-saving effect of air-conditioner.
The present invention proposes a kind of air-conditioner simultaneously, it comprises an energy-saving control system, described energy-saving control system comprises temperature detecting unit, memory cell, analysis and processing unit and execution control module, wherein: and temperature detecting unit, for detection of environment temperature and be sent to analysis and processing unit; Memory cell is used for storage critical-temperature and the high energy efficiency table of comparisons; Analysis and processing unit, be used for judging that whether the temperature difference of the indoor environment temperature of environment temperature and design temperature is less than critical-temperature, call accordingly the high energy efficiency table of comparisons according to judged result, in the corresponding high energy efficiency table of comparisons of inquiry with the compressor optimum operation frequency of described environment temperature coupling; Carry out control module, be used for receiving the optimum operation frequency, the control compressor moves with the optimum operation frequency.Energy-saving control system described in the present embodiment is the related energy-saving control system of above-described embodiment among the present invention, does not repeat them here.
Should be understood that; below only be the preferred embodiments of the present invention; can not therefore limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.

Claims (13)

1. the energy-saving control method of an air-conditioner is characterized in that, comprises step:
The testing environment temperature;
Judge that whether the temperature difference of indoor environment temperature in the described environment temperature and design temperature is less than critical-temperature;
Call accordingly the high energy efficiency table of comparisons according to judged result, in the corresponding high energy efficiency table of comparisons of inquiry with the compressor optimum operation frequency of described environment temperature coupling;
The control compressor moves with the optimum operation frequency.
2. energy-saving control method according to claim 1 is characterized in that, describedly calls accordingly according to judged result that the high energy efficiency table of comparisons comprises:
If the indoor environment temperature in the described environment temperature and the temperature difference of design temperature, are then called single cylinder less than critical-temperature and are moved the high energy efficiency table of comparisons;
If the indoor environment temperature in the described environment temperature and the temperature difference of design temperature are not less than critical-temperature, then call twin-tub and move the high energy efficiency table of comparisons.
3. energy-saving control method according to claim 1 is characterized in that, the compressor optimum operation frequency with described environment temperature coupling in the accordingly high energy efficiency table of comparisons of described inquiry comprises:
Judge in the accordingly high energy efficiency table of comparisons whether corresponding environment temperature is arranged;
If have, then the environment temperature according to correspondence directly matches corresponding optimum operation frequency.
4. whether energy-saving control method according to claim 3 is characterized in that, have the step of corresponding environment temperature also to comprise afterwards in the accordingly high energy efficiency table of comparisons of described judgement:
If nothing is then in searching immediate environment temperature in the high energy efficiency table of comparisons accordingly;
Directly match corresponding optimum operation frequency according to immediate environment temperature.
5. whether energy-saving control method according to claim 3 is characterized in that, have the step of corresponding environment temperature also to comprise afterwards in the accordingly high energy efficiency table of comparisons of described judgement:
If nothing, then in the corresponding high energy efficiency table of comparisons, search and environment temperature before and after immediate two approximately ambient temperatures;
Directly match corresponding two near optimal running frequencies according to two approximately ambient temperatures;
Utilize interpolation method, calculate according to environment temperature, two approximately ambient temperatures and two near optimal running frequencies and match corresponding optimum operation frequency.
6. each described energy-saving control method is characterized in that according to claim 1-5, and described critical-temperature is T0, and 0.5 ℃≤T0≤4 ℃.
7. the energy-saving control system of an air-conditioner is characterized in that, comprises temperature detecting unit, memory cell, analysis and processing unit and execution control module, wherein:
Temperature detecting unit is for detection of environment temperature and be sent to analysis and processing unit;
Memory cell is used for storage critical-temperature and the high energy efficiency table of comparisons;
Analysis and processing unit, be used for judging that whether the temperature difference of the indoor environment temperature of environment temperature and design temperature is less than critical-temperature, call accordingly the high energy efficiency table of comparisons according to judged result, in the corresponding high energy efficiency table of comparisons of inquiry with the compressor optimum operation frequency of described environment temperature coupling;
Carry out control module, be used for receiving the optimum operation frequency, the control compressor moves with the optimum operation frequency.
8. energy-saving control system according to claim 7 is characterized in that, described analysis and processing unit is used for also judging whether the accordingly high energy efficiency table of comparisons has corresponding environment temperature; If have, then directly match corresponding optimum operation frequency according to environment temperature.
9. energy-saving control system according to claim 8 is characterized in that, if described analysis and processing unit also is used for judging the environment temperature without corresponding, then in searching immediate environment temperature in the high energy efficiency table of comparisons accordingly; Directly match corresponding optimum operation frequency according to immediate environment temperature.
10. energy-saving control system according to claim 8 is characterized in that, if described analysis and processing unit also is used for judging the environment temperature without corresponding, then in the high energy efficiency table of comparisons, search and environment temperature before and after immediate two approximately ambient temperatures; Directly match corresponding two near optimal running frequencies according to two approximately ambient temperatures; Utilize interpolation method, calculate according to environment temperature, two approximately ambient temperatures and two near optimal running frequencies and match corresponding optimum operation frequency.
11. each described energy-saving control system is characterized in that according to claim 7-10, the described high energy efficiency table of comparisons comprises that single cylinder moves the high energy efficiency table of comparisons and twin-tub moves the high energy efficiency table of comparisons, and described analysis and processing unit is used for:
If judge the temperature difference of indoor environment temperature and design temperature less than critical-temperature, then inquire about single cylinder and move the high energy efficiency table of comparisons;
Be not less than critical-temperature if judge the temperature difference of indoor environment temperature and design temperature, then inquire about twin-tub and move the high energy efficiency table of comparisons.
12. each energy-saving control system is characterized in that according to claim 7-10, described critical-temperature is T0, and 0.5 ℃≤T0≤4 ℃.
13. an air-conditioner comprises each described energy-saving control system such as claim 7-12.
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Application publication date: 20130424