CN105588271A - Method and device for controlling multiple compressors in multi-connection type air conditioner system - Google Patents
Method and device for controlling multiple compressors in multi-connection type air conditioner system Download PDFInfo
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Abstract
The embodiment of the invention discloses a method and device for controlling multiple compressors in a multi-connection type air conditioner system and relates to the technical field of air conditioners. The method and device for controlling the multiple compressors in the multi-connection type air conditioner system are used for reducing the operand of the multi-connection type air conditioner system in the situation that power consumption of the multi-connection type air conditioner system is relatively low. The method includes the steps that N current highest energy efficiency values corresponding to the N compressors are determined; M current highest energy efficiency values in the N current highest energy efficiency values are determined; and the target operation frequencies of the M compressors corresponding to the M current highest energy efficiency values are determined. The method can be used for controlling the multiple compressors in the multi-connection type air conditioner system so as to reduce the power consumption of the multi-connection type air conditioner system.
Description
Technical field
The present invention relates to air-conditioning technical field, relate in particular to multi-compressor in a kind of multi-connected air conditioning systemControl method and device.
Background technology
In multi-connected air conditioning system (hereinafter to be referred as system), due to multiple compressors, electronic expansionValve and fan etc. in most of the cases do not operate under the state of a control of best of breed, make systemOperational efficiency far below nominal value. For example, a IPLV (IntegratedPartLoadValue,Comprehensive sub-load) coefficient of performance is nominally 5.4 system, only has 3.2 left and right when actual motion,In the time of test, find, turn by the frequency of manual adjustments compressor, aperture or the fan of electric expansion valveSpeed, can temporarily be adjusted to 5.4 by IPLV.
In order to improve the operational efficiency of system, reduce the power consumption of system, a kind of method be calculate eachRegulated quantity corresponding to compressor all running frequencies under current condensation temperature and current evaporating temperature (adjustedJoint amount refers to refrigerating capacity or heating capacity) and performance number, to all possible regulated quantity of all compressorsCombination compare, determine the combination of the one or more regulated quantitys that meet system requirements, when manyWhen the combination of individual regulated quantity all meets system requirements, from the combination of the plurality of regulated quantity, select performance numberMinimum combination, is defined as corresponding compressor by the running frequency corresponding regulated quantity in this combinationObject run frequency, controls the object run frequency operation of each compressor with this compressor, reaches with thisTo the object that reduces system power dissipation. Exemplary, when system comprises 2 compressors, each compressionThe running frequency scope of machine is 15Hz to 135Hz, and each compressor can be with 122 frequency fortuneRow (comprising running frequency 0) operation, can determine 122 × 122 kinds of combinations, from these combinationsIn select the combination of regulated quantity and the performance number minimum that can meet system requirements, by this combinationRunning frequency corresponding to regulated quantity is defined as the object run frequency of corresponding compressor. Ordinary circumstanceUnder, more than 2 of the number of the compressor that system comprises, said method is being determined the target of compressorIn the process of running frequency, amount of calculation is large.
Summary of the invention
Embodiments of the invention provide multi-compressor control method and dress in a kind of multi-connected air conditioning systemPut, in order in the case of ensureing that the power consumption of multi-connected air conditioning system is lower, reduce multi-connected air conditioner systemThe operand of system.
For achieving the above object, embodiments of the invention adopt following technical scheme:
First aspect, provides multi-compressor control method in a kind of multi-connected air conditioning system, described systemComprise N compressor, described method comprises:
Determine N that a described N compressor is corresponding current high energy efficiency value, a compressor correspondenceCurrent high energy efficiency value be this compressor all fortune under current condensation temperature and current evaporating temperatureThe highest efficiency value in efficiency value corresponding to line frequency;
Determine the current high energy efficiency value of in the current high energy efficiency value of described N M, described MCurrent M regulated quantity sum corresponding to high energy efficiency value is not less than first threshold and described M and works asBefore current M-1 regulated quantity sum corresponding to high energy efficiency value of in high energy efficiency value any M-1Be less than first threshold, the minimum regulated quantity that described first threshold is described system requirements, described regulated quantityFor refrigerating capacity or heating capacity;
Determine the object run frequency of M compressor corresponding to the current high energy efficiency value of described M;
Wherein, in the time that described M regulated quantity sum is not more than Second Threshold, a described M compressorIn the object run frequency of each compressor be the current high energy efficiency value correspondence that this compressor is correspondingRunning frequency; In the time that described M regulated quantity sum is greater than Second Threshold, a described M compressorIn M-X compressor except X compressor in the object run frequency of each compressorFor current running frequency corresponding to high energy efficiency value corresponding to this compressor, in a described M compressorEach compressor with object run frequency when operation of this compressor, a described M-X compressor pairM-X the regulated quantity that the M-X that answers current high energy efficiency value is corresponding and the X of a described X compressorX regulated quantity sum corresponding to individual object run frequency is not less than first threshold and is not more than the second thresholdValue and described X the X that object run frequency is corresponding performance number sum minimum; Described the second thresholdValue is the highest regulated quantity of described system requirements, a corresponding efficiency value of running frequency, a tuneJoint amount and a performance number, 1≤M≤N, 1≤X≤M, N >=2, M, N and X are integer.
Second aspect, provides multi-compressor control device in a kind of multi-connected air conditioning system, described systemComprise N compressor, described device comprises:
The first determining unit, for determining the individual current high energy efficiency of N corresponding to a described N compressorValue, the current high energy efficiency value that compressor is corresponding is that this compressor is in current condensation temperature and currentThe highest efficiency value in efficiency value corresponding to all running frequencies under evaporating temperature;
The second determining unit, current for determining M of the current high energy efficiency value of described NHigh energy efficiency value, current M regulated quantity sum corresponding to high energy efficiency value of described M is not less than firstThe current high energy efficiency value correspondence of in the current high energy efficiency value of threshold value and described M any M-1M-1 regulated quantity sum be less than first threshold, what described first threshold was described system requirements is minimumRegulated quantity, described regulated quantity is refrigerating capacity or heating capacity;
The 3rd determining unit, for determining current M compression corresponding to high energy efficiency value of described MThe object run frequency of machine;
Wherein, in the time that described M regulated quantity sum is not more than Second Threshold, a described M compressorIn the object run frequency of each compressor be the current high energy efficiency value correspondence that this compressor is correspondingRunning frequency; In the time that described M regulated quantity sum is greater than Second Threshold, a described M compressorIn M-X compressor except X compressor in the object run frequency of each compressorFor current running frequency corresponding to high energy efficiency value corresponding to this compressor, in a described M compressorEach compressor with object run frequency when operation of this compressor, a described M-X compressor pairM-X the regulated quantity that the M-X that answers current high energy efficiency value is corresponding and the X of a described X compressorX regulated quantity sum corresponding to individual object run frequency is not less than first threshold and is not more than the second thresholdValue and described X the X that object run frequency is corresponding performance number sum minimum; Described the second thresholdValue is the highest regulated quantity of described system requirements, a corresponding efficiency value of running frequency, a tuneJoint amount and a performance number, 1≤M≤N, 1≤X≤M, N >=2, M, N and X are integer.
The method that the embodiment of the present invention provides and device, first determined the N in multi-connected air conditioning systemN corresponding to individual compressor high energy efficiency value, according to regulated quantity corresponding to N high energy efficiency value withAnd the regulated quantity of multi-connected air conditioning system demand is determined the running frequency of each compressor. When N the highestM in efficiency value M regulated quantity sum corresponding to high energy efficiency value meets multi-connected air conditioning systemWhen the regulated quantity of demand, can be directly by the object run of the each compressor in M compressor frequentlyRate is defined as running frequency corresponding to high energy efficiency value that this compressor is corresponding; When M regulated quantity itWhen being greater than the regulated quantity of multi-connected air conditioning system demand, in order to reduce unnecessary power consumption, Ke YitongCross as X compressor in M compressor and determine object run frequency, make in M compressorEach compressor meet multi-connected air conditioning system need with object run frequency when operation of this compressorUnder the prerequisite of the regulated quantity of asking, make the operation power consumption minimum of X compressor; Because efficiency value is higherTime, the operating efficiency of compressor is higher, therefore, and when each compressor is with the object run of this compressorWhen frequency operation, under the lower prerequisite of the power consumption that ensures multi-connected air conditioning system, can fall greatlyThe operand of low controller (X arranges less, and the operand of controller is less), therefore can be by extensivelyGeneral application.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below by rightIn embodiment or description of the Prior Art, the accompanying drawing of required use is briefly described, apparently,Accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain the attached of other according to these accompanying drawingsFigure.
Multi-compressor control method in a kind of multi-connected air conditioning system that Fig. 1 provides for the embodiment of the present inventionFlow chart;
Multi-compressor controlling party in another multi-connected air conditioning system that Fig. 2 provides for the embodiment of the present inventionThe flow chart of method;
Multi-compressor control device in a kind of multi-connected air conditioning system that Fig. 3 provides for the embodiment of the present inventionStructural representation;
Multi-compressor control dress in another multi-connected air conditioning system that Fig. 4 provides for the embodiment of the present inventionThe structural representation of putting.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is enteredRow is described clearly and completely, and obviously, described embodiment is only the present invention's part embodiment,Instead of whole embodiment. Based on the embodiment in the present invention, those of ordinary skill in the art are not havingHave and make the every other embodiment obtaining under creative work prerequisite, all belong to the present invention protectionScope.
Embodiment mono-
The embodiment of the present invention provides multi-compressor control method in a kind of multi-connected air conditioning system, described systemTurnkey is drawn together N compressor, and as shown in Figure 1, described method comprises:
101, determine that N compressor is corresponding N current high energy efficiency value, a compressor correspondenceCurrent high energy efficiency value be this compressor all fortune under current condensation temperature and current evaporating temperatureThe highest efficiency value in efficiency value corresponding to line frequency.
Executive agent in the embodiment of the present invention can be controller, and controller can periodically be carried outThe method that the embodiment of the present invention provides.
It should be noted that, in the time of synchronization, the current condensation temperature of different compressors and currentEvaporating temperature may be identical, also may be different. Each compressor is in current condensation temperature and work as front evaporatorAt temperature, the each corresponding efficiency value of all running frequencies, the current high energy efficiency value of this compressor isRefer under current condensation temperature and current evaporating temperature, the highest in efficiency value corresponding to all running frequenciesEfficiency value. The corresponding high energy efficiency value of compressor.
As shown in table 1, what the embodiment of the present invention was exemplary shows a compressor in different condensationsHigh energy efficiency value under temperature and different evaporating temperature (represents by E in table, by E'sSubscript is distinguished the high energy efficiency value under the condensation temperature different and different evaporating temperature).
Table 1
Taking table 1 as example, in the time that the running frequency scope of this compressor is 15Hz～135Hz, this compressionMachine can be with the operation of 121 frequencies, a corresponding efficiency value of running frequency, when this compressorWhen current condensation temperature and current evaporating temperature are respectively-15 DEG C and 40 DEG C, E0Refer to this compressorCorresponding 121 of 121 running frequencies when condensation temperature and evaporating temperature are respectively-15 DEG C and 40 DEG CThe highest efficiency value in efficiency value. It should be noted that, in the time that compressor does not move, the fortune of compressorLine frequency is 0, and " all running frequencies " in the embodiment of the present invention do not comprise running frequency 0.
The efficiency value of a compressor refers to the ratio of refrigeration (heat) amount and refrigeration (heat) power, because ofThis, a corresponding refrigeration of efficiency value (heat) amount and a refrigeration (heat) power.
Concrete, a compressor each running frequency under specific condensation temperature and specific evaporating temperatureFan-out capability table and the utilization of input power table that corresponding efficiency value can provide according to compressor producerInterpolation calculation method calculates.
102, determine the current high energy efficiency value of in the current high energy efficiency value of N M, M currentM regulated quantity sum corresponding to high energy efficiency value is not less than first threshold and M current high energyAny M-1 in effect value current M-1 regulated quantity sum corresponding to high energy efficiency value is less than firstThreshold value, the minimum regulated quantity that first threshold is system requirements, regulated quantity is refrigerating capacity or heating capacity.
Wherein, the current high energy efficiency value of M can be any M in the individual current high energy efficiency value of NIndividual current high energy efficiency value.
It should be noted that, generally, the refrigeration of system requirements (heat) amount is a scope,Within refrigeration (heat) amount that compressor provides is preferably positioned at this scope. When the current high energy efficiency of MWhen refrigeration (heat) amount sum corresponding to value is greater than minimum refrigeration (heat) amount of system requirements, M is describedRefrigeration (heat) amount that individual compressor provides can meet system requirements.
103, determine the object run frequency of M compressor corresponding to the current high energy efficiency value of M.
Wherein, in the time that M regulated quantity sum is not more than Second Threshold, each in M compressorThe object run frequency of compressor be operation corresponding to current high energy efficiency value that this compressor is corresponding frequentlyRate; In the time that M regulated quantity sum is greater than Second Threshold, in M compressor except X compressorOutside M-X compressor in the object run frequency of each compressor be that this compressor is correspondingCurrent running frequency corresponding to high energy efficiency value, the each compressor in M compressor is with this compressorObject run frequency when operation, the individual current high energy efficiency value pair of M-X that M-X compressor is correspondingX the regulated quantity that the M-X an answering regulated quantity is corresponding with X object run frequency of X compressorSum is not less than first threshold and is not more than Second Threshold and X the X that object run frequency is correspondingIndividual performance number sum minimum; Second Threshold is the highest regulated quantity of system requirements, a running frequency pairAnswer an efficiency value, a regulated quantity and a performance number, 1≤M≤N, 1≤X≤M, N >=2,M, N and X are integer.
It should be noted that, because efficiency value is when higher, refrigeration (heat) efficiency of compressor is higher,Therefore when M current refrigeration (heat) amount sum corresponding to high energy efficiency value is not more than system requirementsIn the highest refrigeration (heat) when amount,, the each compressor in M compressor is with the current high energy efficiency of correspondenceWhile being worth corresponding operational efficiency operation, can make refrigeration (heat) efficiency of this M compressorHeight, thus make refrigeration (heat) efficiency of multi-connected air conditioning system higher.
When current refrigeration (heat) amount sum corresponding to high energy efficiency value of M is greater than system requirementsWhen high refrigeration (heat) amount, in order to reduce unnecessary power consumption, meeting the refrigeration of system requirements (heat)Under the prerequisite of amount, can reduce the power consumption of system as far as possible. Concrete, in order to reduce the power consumption of system,Can determine by the following method the object run frequency of X compressor:
According to the each compressor in X compressor under current condensation temperature and current evaporating temperatureRegulated quantity corresponding to all running frequencies determined R regulated quantity combination; Wherein, each regulated quantity combinationComprise X regulated quantity, a corresponding compressor of regulated quantity, this regulated quantity is that this compressor existsRegulated quantity corresponding to certain running frequency under current condensation temperature and current evaporating temperature, R is X pressureThe product of the number of all running frequencies of contracting machine;
Determine R the r in regulated quantity combination the first regulated quantity combination; Wherein, the first regulated quantity groupX in a closing regulated quantity and M-X M-X regulated quantity sum corresponding to high energy efficiency value is not less thanFirst threshold and be not more than Second Threshold, 1≤r≤R, r, R are integer;
Determine r the second regulated quantity combination in the first regulated quantity combination; Wherein, the second regulated quantity groupBe combined into the regulated quantity combination of r the performance number minimum in the first regulated quantity combination, a regulated quantity combinationPerformance number refer to X the X that running frequency is corresponding corresponding to X regulated quantity in the combination of this regulated quantityIndividual performance number sum, a corresponding regulated quantity of running frequency and a performance number;
The object run frequency of determining X the each compressor in compressor is the second regulated quantity combinationIn running frequency corresponding to regulated quantity corresponding with this compressor.
Description in can vide infra to the concrete example of the method.
After step 103, said method can also comprise: in N compressor of controller controlEach compressor is with the object run frequency operation of this compressor.
It should be noted that the order of other compressors except M compressor in N compressorMark running frequency is 0.
Optionally, the current high energy efficiency value of M is the current high energy efficiency of in target sequence front MValue, arbitrarily M-1 current high energy efficiency value is the current high energy efficiency of in target sequence front M-1Value, target sequence is to obtain after current N high energy efficiency value is arranged according to order from large to smallSequence.
Because efficiency value is when higher, refrigeration (heat) efficiency of compressor is higher, therefore, preferred,Can make the current high energy efficiency value of M is N the highest front M of value in current high energy efficiency valueIndividual current high energy efficiency value, can make refrigeration (heat) efficiency of multi-connected air conditioning system further carryHigh.
Optionally, by current N high energy efficiency value according to tactic process from large to smallIn, if while there is multiple identical value in the current high energy efficiency value of N, by multiple identical value correspondencesCurrent high energy efficiency value corresponding to short compressor of accumulated running time of compressor arrange forward.
Exemplary, if multi-connected air conditioning system comprises 6 compressors, 6 compressors currentHigh energy efficiency value is respectively E (0), E (1), E (2), E (3), E (4) and E (5),Wherein, number number of the digitized representation compressor in E unquote. Suppose wherein E (3)=E (4),The magnitude relationship of 6 high energy efficiency values is: E (5) > E (2) > E (3)=E (4) > E (0)> E (1). Wherein, the accumulated running time of No. 3 compressor is 80 hours, No. 4 compressionThe accumulated running time of machine is 65 hours, and in this situation, target sequence can be: E (5)-E(2)—E(4)—E(3)—E(0)—E(1)。
In this situation, due to the larger high energy of the preferentially unlatching value of method providing in the embodiment of the present inventionEffect is worth corresponding compressor, therefore, utilizes this optional method to sort to the high energy efficiency value of NAfter, running wastage that can balanced each compressor.
It should be noted that, in order to reduce the operand of controller, generally, the value of X is less thanEqual 2.
Optionally, in the time of X=1, X compressor is the current high energy of M in target sequenceEffect is worth corresponding compressor.
In the time determining the object run frequency of compressor corresponding to the current high energy efficiency value of M, canCan there is refrigeration corresponding to multiple running frequencies (heat) amount individual current the highest with the front M-1 in target sequenceRefrigeration (heat) amount sum corresponding to efficiency value is not less than first threshold and is not more than Second Threshold, these feelingsUnder condition, the running frequency of the corresponding performance number minimum in the plurality of running frequency is defined as to this compressionThe object run frequency of machine. This optional method, makes the front M-1 in target sequence individual current the highestCompressor corresponding to efficiency value in the time of running frequency operation corresponding to the current high energy efficiency value with correspondence,The highest efficiency value can be reached, therefore, the power consumption of system can be reduced significantly.
Exemplary, if compressor corresponding to M current high energy efficiency value is in current condensation temperatureIn 121 refrigeration (heat) amount corresponding to lower 121 running frequencies of current evaporating temperature, there are 5Refrigeration (heat) amount with in target sequence before refrigeration (heat) corresponding to the current high energy efficiency value of M-1 measureSum is not less than first threshold and is not more than Second Threshold, in this situation, 5 refrigeration (heat) is measuredThe running frequency of the corresponding performance number minimum in 5 corresponding running frequencies is defined as this compressorObject run frequency.
Optionally, in the time of M >=2 and X=2, X compressor is individual the working as of M-1 in target sequenceBefore the current high energy efficiency value correspondence of in corresponding compressor and the target sequence of high energy efficiency value MCompressor.
This optional method, makes front M-2 in target sequence current pressure corresponding to high energy efficiency valueContracting machine, in the time of running frequency operation corresponding to the current high energy efficiency value with correspondence, can reach the highestEfficiency value, therefore, can reduce the power consumption of system significantly.
Exemplary, for convenience of description, hereinafter by corresponding M-1 current high energy efficiency valueCompressor is called M-1 compressor, and current M compressor corresponding to high energy efficiency value claimedBe M compressor, with M-1 compressor and M all running frequencies of compressorNumber is 121 for example, determines the object run of M-1 compressor and M compressor frequentlyThe process of rate can be: determine a R=121 × 121 regulated quantity combination, bag in each regulated quantity combinationDraw together 2 regulated quantitys, be respectively M-1 compressor under current condensation temperature and current evaporating temperatureThe regulated quantity that certain running frequency is corresponding and M compressor are in current condensation temperature and work as front evaporatorRegulated quantity corresponding to certain running frequency at temperature; In the regulated quantity combination of R=121 × 121, selectR the first regulated quantity combination, in 2 regulated quantitys in the first regulated quantity combination and target sequence beforeM-2 regulated quantity sum corresponding to high energy efficiency value of M-2 is not less than first threshold and is not more than secondThreshold value; In r the first regulated quantity combination, determine the second regulated quantity combination, the second regulated quantity combinationFor the regulated quantity combination of the performance number minimum in r the first regulated quantity combination, a regulated quantity combinationPerformance number refers to corresponding 2 of 2 running frequencies corresponding to 2 regulated quantitys in the combination of this regulated quantityPerformance number sum, a corresponding regulated quantity of running frequency and a performance number; Determine M-1The object run frequency of compressor is corresponding with M-1 compressor in the second regulated quantity combinationThe running frequency that regulated quantity is corresponding, the object run frequency of determining M compressor is the second adjustingRunning frequency corresponding to regulated quantity corresponding with M compressor in amount combination.
The method that the embodiment of the present invention provides, has first determined the N in multi-connected air conditioning system compressionN corresponding to machine high energy efficiency value, according to regulated quantity corresponding to N high energy efficiency value and multi-jointThe regulated quantity of formula air-conditioning system demand is determined the running frequency of each compressor. When the high energy efficiency value of NIn M M regulated quantity sum corresponding to high energy efficiency value meet multi-connected air conditioning system demandWhen regulated quantity, can directly the object run frequency of the each compressor in M compressor be determinedFor running frequency corresponding to high energy efficiency value corresponding to this compressor; When M regulated quantity sum is greater thanWhen the regulated quantity of multi-connected air conditioning system demand, in order to reduce unnecessary power consumption, can be by being MX in an individual compressor compressor is determined object run frequency, makes each in M compressorCompressor meets the tune of multi-connected air conditioning system demand while operation with the object run frequency of this compressorUnder the prerequisite of joint amount, make the operation power consumption minimum of X compressor; Because efficiency value is when higher, compressionThe operating efficiency of machine is higher, therefore, and when each compressor is with the object run frequency operation of this compressorTime, under the lower prerequisite of the power consumption that ensures multi-connected air conditioning system, can reduce greatly controllerOperand (X arrange less, the operand of controller is less), therefore can be widely used.
Embodiment bis-
In the multi-connected air conditioning system that this embodiment provides embodiment mono-, multi-compressor control method is enteredOne step is carried out exemplary illustration, and as shown in Figure 2, the method specifically comprises:
201, determine that N compressor is corresponding N current high energy efficiency value.
In the time carrying out the method first, before step 201, the method can also comprise: obtain and beThe number of the compressor in system.
Wherein, the corresponding current high energy efficiency value of compressor. Concrete, controller can be byN compressor high energy efficiency value under different condensation temperatures and evaporating temperature is stored in memoryIn, in the time need to determining current high energy efficiency value corresponding to N compressor, according to each compressorCurrent condensation temperature and current evaporating temperature are searched and are obtained the current of each compressor in memoryHigh energy efficiency value.
Relevant explanation in the embodiment of the present invention can be referring to above-described embodiment.
202, current N high energy efficiency value is arranged and obtained target according to order from large to smallSequence.
Wherein, if while there is multiple identical value in the current high energy efficiency value of N, by multiple identicalBeing worth current high energy efficiency value corresponding to short compressor of accumulated running time of corresponding compressor arrangesForward.
Exemplary, if multi-connected air conditioning system comprises 6 compressors, 6 compressors currentHigh energy efficiency value is respectively E (0), E (1), E (2), E (3), E (4) and E (5),Wherein, number number of the digitized representation compressor in E unquote. Suppose wherein E (3)=E (4),The magnitude relationship of 6 high energy efficiency values is: E (5) > E (2) > E (3)=E (4) > E (0)> E (1). Wherein, the accumulated running time of No. 3 compressor is 80 hours, No. 4 compressionThe accumulated running time of machine is 65 hours, and in this situation, target sequence can be: E (5)-E(2)—E(4)—E(3)—E(0)—E(1)。
203, judge front M in target sequence current refrigeration (heat) amount corresponding to high energy efficiency valueWhether sum is not less than minimum refrigeration (heat) amount of system requirements.
Wherein, the initial value of M is that 1, M is integer.
If not, execution step 204; If so, perform step 205.
204, make M=M+1.
After execution step 204, return to step 203.
205, judge front M in target sequence current refrigeration (heat) amount corresponding to high energy efficiency valueWhether sum is not more than the highest refrigeration (heat) amount of system requirements.
If so, perform step 206; If not, execution step 207.
206, determine the each current high energy in front M in target sequence current high energy efficiency valueThe object run frequency that effect is worth corresponding compressor is this current running frequency corresponding to high energy efficiency value.
Exemplary, the object run frequency of compressor corresponding to the 1st current high energy efficiency value is1 current running frequency corresponding to high energy efficiency value.
Perform step 206 rear execution steps 208.
207, determine front M-1 in target sequence current M-1 compression corresponding to high energy efficiency valueThe object run frequency of the each compressor in machine is that the high energy efficiency value that this compressor is corresponding is correspondingRunning frequency, determines the order of compressor corresponding to M in target sequence current high energy efficiency valueMark running frequency.
Concrete, M current compressor corresponding to high energy efficiency value is the X described in embodiment mono-Individual compressor, determines the object run frequency of compressor corresponding to the current high energy efficiency value of MMethod can, referring to above-described embodiment, not repeat them here.
Perform step 207 rear execution steps 208.
208, each compressor of controlling in N compressor is transported with the object run frequency of this compressorOK.
It should be noted that the order of other compressors except M compressor in N compressorMark running frequency is that 0, M compressor refers to the individual current high energy efficiency value pair of front M in target sequenceThe M an answering compressor.
In addition, for guarantee system is in the state that power consumption is lower all the time, controller can be every defaultTime period is carried out the method, or periodically carries out the method.
The method that the embodiment of the present invention provides, has first determined the N in multi-connected air conditioning system compressionN corresponding to machine high energy efficiency value, according to regulated quantity corresponding to N high energy efficiency value and multi-jointThe regulated quantity of formula air-conditioning system demand is determined the running frequency of each compressor. When the high energy efficiency value of NIn M M regulated quantity sum corresponding to high energy efficiency value meet multi-connected air conditioning system demandWhen regulated quantity, can directly the object run frequency of the each compressor in M compressor be determinedFor running frequency corresponding to high energy efficiency value corresponding to this compressor; When M regulated quantity sum is greater thanWhen the regulated quantity of multi-connected air conditioning system demand, in order to reduce unnecessary power consumption, can be by being MX in an individual compressor compressor is determined object run frequency, makes each in M compressorCompressor meets the tune of multi-connected air conditioning system demand while operation with the object run frequency of this compressorUnder the prerequisite of joint amount, make the operation power consumption minimum of X compressor; Because efficiency value is when higher, compressionThe operating efficiency of machine is higher, therefore, and when each compressor is with the object run frequency operation of this compressorTime, under the lower prerequisite of the power consumption that ensures multi-connected air conditioning system, can reduce greatly controllerOperand (X arrange less, the operand of controller is less), therefore can be widely used.
Embodiment tri-
The embodiment of the present invention provides multi-compressor control device 30 in a kind of multi-connected air conditioning system, usesIn the method shown in execution graph 1, as shown in Figure 3, device 30 comprises:
The first determining unit 301, for determining the individual current high energy efficiency value of N that N compressor is corresponding,A current high energy efficiency value corresponding to compressor is that this compressor is in current condensation temperature and current steamingSend out the highest efficiency value in efficiency value corresponding to all running frequencies at temperature;
The second determining unit 302, for determining that M of the current high energy efficiency value of N is current the highestEfficiency value, current M regulated quantity sum corresponding to high energy efficiency value of M be not less than first threshold,And current M-1 tune corresponding to high energy efficiency value of in the current high energy efficiency value of M any M-1Joint amount sum is less than first threshold, the minimum regulated quantity that first threshold is system requirements, and regulated quantity is systemCold or heating capacity;
The 3rd determining unit 303, for determining current M compression corresponding to high energy efficiency value of MThe object run frequency of machine;
Wherein, in the time that M regulated quantity sum is not more than Second Threshold, each in M compressorThe object run frequency of compressor be operation corresponding to current high energy efficiency value that this compressor is corresponding frequentlyRate; In the time that M regulated quantity sum is greater than Second Threshold, in M compressor except X compressorOutside M-X compressor in the object run frequency of each compressor be that this compressor is correspondingCurrent running frequency corresponding to high energy efficiency value, the each compressor in M compressor is with this compressorObject run frequency when operation, the individual current high energy efficiency value pair of M-X that M-X compressor is correspondingX the regulated quantity that the M-X an answering regulated quantity is corresponding with X object run frequency of X compressorSum is not less than first threshold and is not more than Second Threshold and X the X that object run frequency is correspondingIndividual performance number sum minimum; Second Threshold is the highest regulated quantity of system requirements, a running frequency pairAnswer an efficiency value, a regulated quantity and a performance number, 1≤M≤N, 1≤X≤M, N >=2,M, N and X are integer.
Optionally, the current high energy efficiency value of M is the current high energy efficiency of in target sequence front MValue, arbitrarily M-1 current high energy efficiency value is the current high energy efficiency of in target sequence front M-1Value, target sequence is to obtain after current N high energy efficiency value is arranged according to order from large to smallSequence.
Optionally, by current N high energy efficiency value according to tactic process from large to smallIn, if while there is multiple identical value in the current high energy efficiency value of N, by multiple identical value correspondencesCurrent high energy efficiency value corresponding to short compressor of accumulated running time of compressor arrange forward.
Optionally, in the time of X=1, X compressor is the current high energy of M in target sequenceEffect is worth corresponding compressor.
Optionally, in the time of M >=2 and X=2, X compressor is individual the working as of M-1 in target sequenceBefore the current high energy efficiency value correspondence of in corresponding compressor and the target sequence of high energy efficiency value MCompressor.
The device that the embodiment of the present invention provides, has first determined the N in multi-connected air conditioning system compressionN corresponding to machine high energy efficiency value, according to regulated quantity corresponding to N high energy efficiency value and multi-jointThe regulated quantity of formula air-conditioning system demand is determined the running frequency of each compressor. When the high energy efficiency value of NIn M M regulated quantity sum corresponding to high energy efficiency value meet multi-connected air conditioning system demandWhen regulated quantity, can directly the object run frequency of the each compressor in M compressor be determinedFor running frequency corresponding to high energy efficiency value corresponding to this compressor; When M regulated quantity sum is greater thanWhen the regulated quantity of multi-connected air conditioning system demand, in order to reduce unnecessary power consumption, can be by being MX in an individual compressor compressor is determined object run frequency, makes each in M compressorCompressor meets the tune of multi-connected air conditioning system demand while operation with the object run frequency of this compressorUnder the prerequisite of joint amount, make the operation power consumption minimum of X compressor; Because efficiency value is when higher, compressionThe operating efficiency of machine is higher, therefore, and when each compressor is with the object run frequency operation of this compressorTime, under the lower prerequisite of the power consumption that ensures multi-connected air conditioning system, can reduce greatly controllerOperand (X arrange less, the operand of controller is less), therefore can be widely used.
Embodiment tetra-
On hardware is realized, the unit in said apparatus 30 can be embedded in example, in hardware orBe independent of in the processor of device 30, also can be stored in the memory of device 30 with software form,Carry out operation corresponding to above unit so that processor calls, this processor can be centreReason unit (CPU), microprocessor, single-chip microcomputer etc.
As shown in Figure 4, the embodiment of the present invention provides multi-compressor control in another kind of multi-connected air conditioning systemDevice 40 processed, for the method shown in execution graph 1, this device 40 comprises: memory 401, locateReason device 402 and bus system 403.
Wherein, between memory 401 and processor 402, be to be coupled by bus system 403, wherein memory 401 may comprise random access memory, also may also comprise non-volatile depositingReservoir, for example at least one magnetic disc store. Bus system 403 can be isa bus, PCIBus or eisa bus etc. This bus system 403 can be divided into address bus, data/address bus, controlBus processed etc. For ease of representing, in Fig. 4, only represent with a thick line, but do not represent only there is oneThe bus of bus or one type.
Memory 401 is for storing one group of code, below this code is carried out for control processor 402Action:
Determine that N compressor is corresponding N current high energy efficiency value, corresponding working as of compressorBefore high energy efficiency value be that all operations are frequently under current condensation temperature and current evaporating temperature for this compressorThe highest efficiency value in efficiency value corresponding to rate;
Determine the current high energy efficiency value of in the current high energy efficiency value of N M, M current the highestM regulated quantity sum corresponding to efficiency value is not less than first threshold and M current high energy efficiency valueIn current M-1 regulated quantity sum corresponding to high energy efficiency value of any M-1 be less than first threshold,First threshold is the minimum regulated quantity of system requirements, and regulated quantity is refrigerating capacity or heating capacity;
Determine the object run frequency of M compressor corresponding to the current high energy efficiency value of M;
Wherein, in the time that M regulated quantity sum is not more than Second Threshold, each in M compressorThe object run frequency of compressor be operation corresponding to current high energy efficiency value that this compressor is corresponding frequentlyRate; In the time that M regulated quantity sum is greater than Second Threshold, in M compressor except X compressorOutside M-X compressor in the object run frequency of each compressor be that this compressor is correspondingCurrent running frequency corresponding to high energy efficiency value, the each compressor in M compressor is with this compressorObject run frequency when operation, the individual current high energy efficiency value pair of M-X that M-X compressor is correspondingX the regulated quantity that the M-X an answering regulated quantity is corresponding with X object run frequency of X compressorSum is not less than first threshold and is not more than Second Threshold and X the X that object run frequency is correspondingIndividual performance number sum minimum; Second Threshold is the highest regulated quantity of system requirements, a running frequency pairAnswer an efficiency value, a regulated quantity and a performance number, 1≤M≤N, 1≤X≤M, N >=2,M, N and X are integer.
Optionally, the current high energy efficiency value of M is the current high energy efficiency of in target sequence front MValue, arbitrarily M-1 current high energy efficiency value is the current high energy efficiency of in target sequence front M-1Value, target sequence is to obtain after current N high energy efficiency value is arranged according to order from large to smallSequence.
Optionally, by current N high energy efficiency value according to tactic process from large to smallIn, if while there is multiple identical value in the current high energy efficiency value of N, by multiple identical value correspondencesCurrent high energy efficiency value corresponding to short compressor of accumulated running time of compressor arrange forward.
Optionally, in the time of X=1, X compressor is the current high energy of M in target sequenceEffect is worth corresponding compressor.
Optionally, in the time of M >=2 and X=2, X compressor is individual the working as of M-1 in target sequenceBefore the current high energy efficiency value correspondence of in corresponding compressor and the target sequence of high energy efficiency value MCompressor.
The device that the embodiment of the present invention provides, has first determined the N in multi-connected air conditioning system compressionN corresponding to machine high energy efficiency value, according to regulated quantity corresponding to N high energy efficiency value and multi-jointThe regulated quantity of formula air-conditioning system demand is determined the running frequency of each compressor. When the high energy efficiency value of NIn M M regulated quantity sum corresponding to high energy efficiency value meet multi-connected air conditioning system demandWhen regulated quantity, can directly the object run frequency of the each compressor in M compressor be determinedFor running frequency corresponding to high energy efficiency value corresponding to this compressor; When M regulated quantity sum is greater thanWhen the regulated quantity of multi-connected air conditioning system demand, in order to reduce unnecessary power consumption, can be by being MX in an individual compressor compressor is determined object run frequency, makes each in M compressorCompressor meets the tune of multi-connected air conditioning system demand while operation with the object run frequency of this compressorUnder the prerequisite of joint amount, make the operation power consumption minimum of X compressor; Because efficiency value is when higher, compressionThe operating efficiency of machine is higher, therefore, and when each compressor is with the object run frequency operation of this compressorTime, under the lower prerequisite of the power consumption that ensures multi-connected air conditioning system, can reduce greatly controllerOperand (X arrange less, the operand of controller is less), therefore can be widely used.
Those skilled in the art can be well understood to, for convenience and simplicity of description, only withThe division of above-mentioned each functional module is illustrated, in practical application, and can be as required and by upperState function distribution and completed by different functional modules, be divided into different merits by the internal structure of deviceEnergy module, to complete all or part of function described above. The device of foregoing description and moduleSpecific works process, can, with reference to the corresponding process in preceding method embodiment, not repeat them here.
In the several embodiment that provide in the application, should be understood that, disclosed apparatus and method,Can realize by another way. For example, device embodiment described above is only schematic, for example, the division of described module, is only that a kind of logic function is divided, passable when actual realizationHave other dividing mode, for example multiple modules or assembly can in conjunction with or can be integrated into anotherSystem, or some features can ignore, or do not carry out. Another point, shown or discussed mutual itBetween coupling or direct-coupling or communication connection can be by some interfaces, device or unit indirectlyCoupling or communication connection.
In addition, the each functional module in each embodiment of the application can be integrated in a processing moduleIn, can be also that the independent physics of modules exists, also can exist by two or more module integrationsIn a module. Above-mentioned integrated module both can adopt the form of hardware to realize, and also can adopt softThe form of part functional module realizes.
The above, above embodiment only, in order to the application's technical scheme to be described, is not intended to limit;Although the application is had been described in detail with reference to previous embodiment, those of ordinary skill in the artBe to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, orPart technical characterictic is wherein equal to replacement; And these amendments or replacement do not make corresponding skillThe essence of art scheme departs from the spirit and scope of the each embodiment technical scheme of the application.
Claims (10)
1. a multi-compressor control method in multi-connected air conditioning system, described system comprises N compressionMachine, is characterized in that, described method comprises:
Determine N that a described N compressor is corresponding current high energy efficiency value, a compressor is correspondingCurrent high energy efficiency value is that all operations are frequently under current condensation temperature and current evaporating temperature for this compressorThe highest efficiency value in efficiency value corresponding to rate;
Determine the current high energy efficiency value of in the current high energy efficiency value of described N M, work as for described MBefore M regulated quantity sum corresponding to high energy efficiency value be not less than first threshold and described M currentAny M-1 in high energy efficiency value current M-1 regulated quantity sum corresponding to high energy efficiency value is less than theOne threshold value, the minimum regulated quantity that described first threshold is described system requirements, described regulated quantity is refrigerating capacityOr heating capacity;
Determine the object run frequency of M compressor corresponding to the current high energy efficiency value of described M;
Wherein, in the time that described M regulated quantity sum is not more than Second Threshold, in a described M compressorThe object run frequency of each compressor be current fortune corresponding to high energy efficiency value that this compressor is correspondingLine frequency; In the time that described M regulated quantity sum is greater than Second Threshold, removing in a described M compressorThe object run frequency of the each compressor in M-X compressor outside X compressor is this compressionCurrent running frequency corresponding to high energy efficiency value that machine is corresponding, the each compression in a described M compressorWhen machine moves with the object run frequency of this compressor, work as for M-X that a described M-X compressor is correspondingBefore M-X regulated quantity corresponding to high energy efficiency value and X object run frequency of a described X compressorX corresponding regulated quantity sum is not less than first threshold and is not more than Second Threshold and a described X orderX performance number sum minimum corresponding to mark running frequency; Described Second Threshold is described system requirementsThe highest regulated quantity, a corresponding efficiency value of running frequency, a regulated quantity and a performance number, 1≤ M≤N, 1≤X≤M, N >=2, M, N and X are integer.
2. method according to claim 1, is characterized in that, the current high energy efficiency of described MValue is the front M in target sequence current high energy efficiency value, described any M-1 current high energy efficiencyValue is the front M-1 in described target sequence current high energy efficiency value, and described target sequence is by described NThe sequence that individual current high energy efficiency value obtains after arranging according to order from large to small.
3. method according to claim 2, is characterized in that, current the highest by described NEfficiency value is according in tactic process from large to small, if in described N current high energy efficiency valueWhile there is multiple identical value, by short the accumulated running time of compressor corresponding described multiple identical valuesCurrent high energy efficiency value corresponding to compressor arrange forward.
4. according to the method in claim 2 or 3, it is characterized in that, in the time of X=1, described XIndividual compressor is M in described target sequence current compressor corresponding to high energy efficiency value.
5. according to the method in claim 2 or 3, it is characterized in that, in the time of M >=2 and X=2,A described X compressor is M-1 in described target sequence current compression corresponding to high energy efficiency valueM in machine and described target sequence current compressor corresponding to high energy efficiency value.
6. a multi-compressor control device in multi-connected air conditioning system, described system comprises N compressionMachine, is characterized in that, described device comprises:
The first determining unit, for determining the individual current high energy efficiency value of N corresponding to a described N compressor,A current high energy efficiency value corresponding to compressor is that this compressor is in current condensation temperature and work as front evaporatorThe highest efficiency value in efficiency value corresponding to all running frequencies at temperature;
The second determining unit, for determining that M of the current high energy efficiency value of described N is current the highestEfficiency value, current M regulated quantity sum corresponding to high energy efficiency value of described M be not less than first threshold,And corresponding M-1 of the current high energy efficiency value of in the current high energy efficiency value of described M any M-1Regulated quantity sum is less than first threshold, the minimum regulated quantity that described first threshold is described system requirements, instituteStating regulated quantity is refrigerating capacity or heating capacity;
The 3rd determining unit, for determining current M compressor corresponding to high energy efficiency value of described MObject run frequency;
Wherein, in the time that described M regulated quantity sum is not more than Second Threshold, in a described M compressorThe object run frequency of each compressor be current fortune corresponding to high energy efficiency value that this compressor is correspondingLine frequency; In the time that described M regulated quantity sum is greater than Second Threshold, removing in a described M compressorThe object run frequency of the each compressor in M-X compressor outside X compressor is this compressionCurrent running frequency corresponding to high energy efficiency value that machine is corresponding, the each compression in a described M compressorWhen machine moves with the object run frequency of this compressor, work as for M-X that a described M-X compressor is correspondingBefore M-X regulated quantity corresponding to high energy efficiency value and X object run frequency of a described X compressorX corresponding regulated quantity sum is not less than first threshold and is not more than Second Threshold and a described X orderX performance number sum minimum corresponding to mark running frequency; Described Second Threshold is described system requirementsThe highest regulated quantity, a corresponding efficiency value of running frequency, a regulated quantity and a performance number, 1≤ M≤N, 1≤X≤M, N >=2, M, N and X are integer.
7. device according to claim 6, is characterized in that, the current high energy efficiency of described MValue is the front M in target sequence current high energy efficiency value, described any M-1 current high energy efficiencyValue is the front M-1 in described target sequence current high energy efficiency value, and described target sequence is by described NThe sequence that individual current high energy efficiency value obtains after arranging according to order from large to small.
8. device according to claim 7, is characterized in that, current the highest by described NEfficiency value is according in tactic process from large to small, if in described N current high energy efficiency valueWhile there is multiple identical value, by short the accumulated running time of compressor corresponding described multiple identical valuesCurrent high energy efficiency value corresponding to compressor arrange forward.
9. according to the device described in claim 7 or 8, it is characterized in that, in the time of X=1, described XIndividual compressor is M in described target sequence current compressor corresponding to high energy efficiency value.
10. according to the device described in claim 7 or 8, it is characterized in that, as M >=2 and X=2Time, a described X compressor is that M-1 in described target sequence current high energy efficiency value is correspondingM in compressor and described target sequence current compressor corresponding to high energy efficiency value.
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