CN105180361A - Method and device for simulating natural wind as well air feeding method and device for air conditioner - Google Patents
Method and device for simulating natural wind as well air feeding method and device for air conditioner Download PDFInfo
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- CN105180361A CN105180361A CN201510561332.1A CN201510561332A CN105180361A CN 105180361 A CN105180361 A CN 105180361A CN 201510561332 A CN201510561332 A CN 201510561332A CN 105180361 A CN105180361 A CN 105180361A
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Abstract
The invention discloses a method and a device for simulating natural wind as well as an air feeding method and an air feeding device for an air conditioner. The method comprises the following steps: acquiring sample data of natural wind and extracting characteristic parameters in sample data; inputting the characteristic parameter into a model which represents a thermal comfort index to correct the characteristic parameters to obtain corrected characteristic parameters; and generating a control sequence for simulating the natural wind according to the corrected characteristic parameters, wherein the control sequence is used for controlling the air conditioner to output natural wind. The method solves the technical problem that natural wind cannot be accurately stimulated because of relatively great sampling errors.
Description
Technical field
The present invention relates to field of air conditioning, in particular to air supply method, the device of a kind of method of natural wind simulating, device and air-conditioner.
Background technology
About the control method of natural wind, the mode of the generation natural wind of prior art is with natural wind simulating by natural wind sampler Real-time Collection natural wind wind speed.On the usual machine disposed in the outdoor of sampler of Real-time Collection natural wind, then accurately cannot judge wind speed when off-premises station installation site is not good, the parameter error making natural wind simulating is comparatively large, or when outdoor calm time then cannot simulate natural wind.Inventor finds, because prior art adopts the wind of Real-time Collection as analog parameter when generating natural wind, cannot control the sample gathered, and the error of sampling is caused more greatly cannot the problem of accurate simulation natural wind.
For above-mentioned problem, at present effective solution is not yet proposed.
Summary of the invention
Embodiments provide the air supply method of a kind of method of natural wind simulating, device and air-conditioner, device, causing more greatly with the error at least solved due to sampling cannot the technical problem of accurate simulation natural wind.
According to an aspect of the embodiment of the present invention, provide a kind of method of natural wind simulating, comprising: gather the sample data of natural wind and the characteristic parameter extracted in described sample data; Described characteristic parameter is input to characterize thermal comfort index model in revise described characteristic parameter, obtain revised characteristic parameter; Generate the Control timing sequence of natural wind simulating according to described revised characteristic parameter, wherein, described Control timing sequence exports natural wind for controlling air-conditioner.
According to the another aspect of the embodiment of the present invention, additionally provide a kind of device of natural wind simulating, comprise: obtain the Control timing sequence being used for natural wind simulating, described Control timing sequence generates according to the characteristic parameter revised, and the characteristic parameter of correction is obtained the characteristic parameter correction of extracting from the sample data of natural wind by the model characterizing thermal comfort index; Natural wind is exported according to described Control timing sequence.
According to an aspect of the embodiment of the present invention, provide a kind of air supply method of air-conditioner, comprising: collecting unit, for gathering the sample data of natural wind and the characteristic parameter extracted in described sample data; Input block, for described characteristic parameter is input to characterize thermal comfort index model in revise described characteristic parameter, obtain revised characteristic parameter; Generation unit, for generating the Control timing sequence of natural wind simulating according to described revised characteristic parameter, wherein, described Control timing sequence exports natural wind for controlling air-conditioner.
According to the another aspect of the embodiment of the present invention, additionally provide a kind of air-supply arrangement of air-conditioner, comprise: timing acquisition unit, for obtaining the Control timing sequence for natural wind simulating, described Control timing sequence generates according to the characteristic parameter revised, and the characteristic parameter of correction is obtained the characteristic parameter correction of extracting from the sample data of natural wind by the model characterizing thermal comfort index; Control unit, for exporting natural wind according to described Control timing sequence.
In embodiments of the present invention, the sample data of natural wind is gathered and the characteristic parameter extracted in sample data; Characteristic parameter is input to characterize thermal comfort index model in revise characteristic parameter, obtain revised characteristic parameter; The Control timing sequence of natural wind simulating is generated according to revised characteristic parameter, wherein, Control timing sequence exports natural wind for controlling air-conditioner, collecting sample data under the natural environment corresponding to the natural wind of simulation also extract characteristic parameter, make the natural wind simulated closer to the natural wind in natural environment, so the error solved due to sampling cause more greatly cannot the technical problem of accurate simulation natural wind.Meanwhile, owing to adopting the model of thermal comfort index to revise the characteristic parameter extracted, make the natural wind simulated bring more comfortable experience to human body, improve the comfortableness of natural wind.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of the method for natural wind simulating according to the embodiment of the present invention;
Fig. 2 is the Control timing sequence figure according to the embodiment of the present invention;
Fig. 3 is the flow chart of the air supply method of air-conditioner according to the embodiment of the present invention;
Fig. 4 is the Control timing sequence figure according to an alternate embodiment of the present invention;
Fig. 5 is the Control timing sequence figure according to the another embodiment of the present invention;
Fig. 6 is the schematic diagram of the device of natural wind simulating according to the embodiment of the present invention;
Fig. 7 is the schematic diagram of the air-supply arrangement of air-conditioner according to the embodiment of the present invention.
Detailed description of the invention
The present invention program is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the embodiment of a part of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.
It should be noted that, term " first ", " second " etc. in description of the present invention and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.Should be appreciated that the data used like this can be exchanged in the appropriate case, so as embodiments of the invention described herein can with except here diagram or describe those except order implement.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, such as, contain those steps or unit that the process of series of steps or unit, method, system, product or equipment is not necessarily limited to clearly list, but can comprise clearly do not list or for intrinsic other step of these processes, method, product or equipment or unit.
Embodiment 1
According to the embodiment of the present invention, provide a kind of embodiment of method of natural wind simulating, it should be noted that, can perform in the computer system of such as one group of computer executable instructions in the step shown in the flow chart of accompanying drawing, and, although show logical order in flow charts, in some cases, can be different from the step shown or described by order execution herein.
Fig. 1 is the flow chart of the method for natural wind simulating according to the embodiment of the present invention.As shown in Figure 1, the method comprises the steps:
Step S102, gathers the sample data of natural wind and the characteristic parameter extracted in sample data.The method of the natural wind simulating of this embodiment can simulate oceanic winds, grassland wind and forest wind etc.Which kind of which kind of simulate natural wind just gather the sample data of natural wind and extract corresponding characteristic parameter.Often kind of natural wind all has the characteristic parameter of one's own feature, therefore, just can simulate corresponding natural wind according to these characteristic parameters.So, in order to these characteristic parameters can be obtained, when gathering the sample data of natural wind just can in ocean, the area collection such as grassland and forest, thus ensure that the characteristic parameter of extraction can embody the feature of corresponding natural wind.
Compare dull mechanical blowing, natural wind has remarkable six large features as follows:
Spectral characteristic: the power spectral density distribution of natural wind wind speed meets 1/f rule, and wind velocity fluctuation has 1/f Turbulent characteristics, and the β value of wind speed power spectrum remains on about 1.5, has obvious spectral characteristic.
Wind speed characteristics: the VELOCITY DISTRIBUTION of natural wind is obvious partial velocities, the wind speed accounting lower than mean wind speed is large, and mechanical blowing speed is normal distribution.
Turbulence intensity: the fluctuations in wind speed of natural wind is comparatively large, and turbulence intensity is greater than mechanical blowing.General turbulence intensity Tu is greater than 0.5.
Ripple frequency: have good cooling effect within the scope of air motion frequency 0.3-1.0Hz, fluctuations in wind speed frequency is at about 0.4Hz.
Large whirlpool length: the large whirlpool length dimension L of air-flow is comparatively large, and large whirlpool length dimension L value and the indoor real space yardstick of indoor air flow are close;
Wind direction characteristic: the wind direction change with time of natural wind, in longer time span, natural wind by time cardinal wind present more stable feature.In shorter time span, natural wind by time the wind direction moment all change.
Because natural wind has above-mentioned feature, therefore, can extract when extracting characteristic parameter air themperature, air average speed and air-flow turbulivity one of at least.When natural environment air temperature is higher, air average speed is less, and air stream turbulence degree is less; When natural environment air temperature is lower, air average speed is comparatively large, and air stream turbulence degree is larger.
Step S104, characteristic parameter is input to characterize thermal comfort index model in revise characteristic parameter, obtain revised characteristic parameter.Thermal comfort index and PMV-PPD index are a kind of indexs evaluated blowing comfortableness.The numerical value of this index is larger, and meaning rate with thumb down is higher, and comfortableness of namely drying is poor; Numerical value is less, and meaning rate with thumb down is lower, and comfortableness of namely drying is higher.Therefore, revise by the characteristic parameter of extraction is input in thermal comfort index, make revised characteristic parameter can also meet the requirement of human body to blowing comfort level while the feature embodying natural wind.
Step S106, generates the Control timing sequence of natural wind simulating according to revised characteristic parameter, wherein, Control timing sequence exports natural wind for controlling air-conditioner.According to the feature that the speed of natural wind is partial velocities, when generating Control timing sequence, can generate according to air average speed and air-flow turbulivity and there is partial velocities feature simulating nature divide, namely higher than mean wind speed wind speed shared by time compared with the time shared by the wind speed lower than mean wind speed, the time shared by the former is shorter.
Pass through above-described embodiment, collecting sample data under the natural environment corresponding to the natural wind of simulation also extract characteristic parameter, make the natural wind simulated closer to the natural wind in natural environment, so the error solved due to sampling cause more greatly cannot the technical problem of accurate simulation natural wind.Meanwhile, owing to adopting the model of thermal comfort index to revise the characteristic parameter extracted, make the natural wind simulated bring more comfortable experience to human body, improve the comfortableness of natural wind.
Particularly, revised characteristic parameter comprises mean wind speed and air-flow turbulivity, and the Control timing sequence generating natural wind simulating according to revised characteristic parameter comprises: determine according to air stream turbulence degree the maximum wind velocity and the minimum windspeed that export natural wind; Obtain the wind speed distribution characteristics of natural wind; Control timing sequence is generated according to wind speed distribution characteristics, mean wind speed, maximum wind velocity and minimum windspeed.Adopt the comfortableness of model to blowing characterizing thermal comfort index to control, the model characterizing thermal comfort index can be following formula:
PD＝(34-t
a)(v-0.05)
0.62·(0.37vTu+3.14)
In formula: PD is the percent dissatisfied caused of drying, unit %; t
afor air themperature, unit DEG C; V is mean wind speed,
wherein N is the measuring point number of discrete wind speed sample, v
ibe the speed of i-th discrete wind speed sample, unit m/s; As v<0.05m/s, get v=0.05m/s; Tu is turbulence intensity,
wherein
the standard deviation of fluctuations in wind speed,
Percent dissatisfied index PD follows air themperature, air average speed, air stream turbulence degree relevant, and has the greatest impact by average speed, and air themperature reduces then percent dissatisfied and increases; Mean wind speed improves then percent dissatisfied and increases; Turbulivity increase then percent dissatisfied improves.By controlling jointly controlling air themperature, air average speed and air-flow turbulivity, reduce the percent dissatisfied of blowing.Namely by regulating air themperature, average speed and air-flow turbulivity to regulate percent dissatisfied, revised characteristic parameter can be drawn when percent dissatisfied is lower.
Continue the long period because natural wind has low wind speed, high wind speed continues the partial velocities characteristic of short period, therefore, generates Control timing sequence according to the wind speed distribution characteristics of natural wind, mean wind speed, maximum wind velocity and minimum windspeed.Control timing sequence is in periodically sinusoidal function change, and the Control timing sequence of generation as shown in Figure 2.Wherein, instantaneous wind speed=mean wind speed+fluctuation wind speed, namely
Y=X+Asin (2 π ft), X is mean speed, and A is fluctuation rotating speed.
The instantaneous velocity of air flowing any instant can be expressed as
wherein
be average speed, v ' is velocity perturbation.Tu turbulence intensity is defined as the standard deviation of velocity perturbation and the ratio of average speed, namely
it illustrates the fluctuating level of flowing in a period of time.
Utilize revised characteristic parameter to generate Control timing sequence and can improve the comfort level of natural wind to human body of simulation, reduce air conditioning energy consumption, and reduce mechanical blowing and cause user to suffer from the risk of air conditioner disease.
Alternatively, characteristic parameter is input in the model characterizing thermal comfort index to revise characteristic parameter, obtain revised characteristic parameter to comprise: obtain current signature parameter, repeat following steps, until the model characterizing thermal comfort index exports preset thermal comfort index: by current signature parameters input in the model characterizing thermal comfort index, obtain the first thermal comfort index; Judge whether the first thermal comfort index meets and preset thermal comfort index; If so, then determine that current signature parameter is revised characteristic parameter; If not, then adjust characteristic parameter, using the characteristic parameter after adjustment as current signature parameter.
In the process revising characteristic parameter, characteristic parameter can be input in the model of above-mentioned sign thermal comfort index, by comparing the percent dissatisfied adjustment characteristic parameter of the model instruction characterizing thermal comfort index, to reduce percent dissatisfied, when percent dissatisfied meets the requirement of human body to comfort level, namely, when the model characterizing thermal comfort index exports and presets thermal comfort index, the characteristic parameter characterized in the model of thermal comfort index is exactly revised characteristic parameter.When adjusting characteristic parameter, at least one parameter comprising air themperature, air average speed and air-flow turbulivity can be adjusted.Characteristic parameter after adjustment is corresponding with the controling parameters of air-conditioner, is combined just can control air-conditioner and blow natural wind with the Control timing sequence shown in Fig. 2.
Pass through above-described embodiment, because sample data gathers in natural environment, not by the setting position of outdoor machine of air-conditioner and the impact of environment, avoid the error of sampling, therefore, the characteristic parameter extracted from sample data accurately can reflect the feature of the natural wind in natural environment, and utilize the model characterizing thermal comfort index to revise the characteristic parameter extracted, when making the Control timing sequence generated according to revised parameter that air-conditioner is blown, the simulation wind sent, closer to natural wind, reaches the effect of accurate simulation natural wind.
Embodiment 2
The embodiment of the present invention additionally provides a kind of air supply method of air-conditioner.This air-conditioner can adopt the Control timing sequence generated in above-described embodiment to control, and to export natural wind, wherein, the natural wind of output comprises forest wind, oceanic winds and grassland wind etc., and as shown in Figure 3, the method comprises:
Step S302, obtains the Control timing sequence being used for natural wind simulating, and Control timing sequence generates according to the characteristic parameter revised, and the characteristic parameter of correction is obtained the characteristic parameter correction of extracting from the sample data of natural wind by the model characterizing thermal comfort index.
Step S304, exports natural wind according to Control timing sequence.
As shown in Figure 2, air-conditioner can control according to the sequential of Fig. 2 when natural wind simulating the Control timing sequence obtained in last embodiment, and design parameter is as shown in table 1.
Table 1
As shown in table 1, characteristic parameter t
acorresponding indoor environment temperature, the rotation speed of fan of the corresponding air-conditioning of v mean wind speed v, the fluctuation of the rotating speed of the corresponding air-conditioning of turbulence intensity Tu.Table 1 have recorded the fluctuation that the mean speed of blower fan under different indoor environment temperature and electric machine rotation bring.
Such as, as shown in Figure 4, current indoor environment temperature is less than 25 DEG C, and mean speed is middling speed, fluctuation of speed amplitude is ± 50, then air-blower control exports mean wind speed, the i.e. wind of middling speed, after 5s, motor is increased by the change controlled wind speed of rotating speed, and continuing 3s, the change that then motor controls rotating speed again makes wind speed get back to mean wind speed, and continues 5s.Then, electric machine controller rotating speed makes wind speed reduce, and gets back to mean wind speed after low-speed region continues 10s.This process is exactly a cycle period, and the fluctuating range of motor speed is ± 50.Blower fan in air-conditioner and motor coordinate jointly, make to blow according to cycle period in the process of whole air-supply, and the wind exported according to above-mentioned Control timing sequence is natural wind simulating.
From the parameter characterized in the model of thermal comfort index, indoor environment temperature, mean wind speed and turbulivity affect comfort level, therefore, adjust corresponding mean wind speed and turbulivity according to indoor environment temperature.Such as, according to shown in table 1, current indoor environment temperature is greater than 30 DEG C, and mean speed is that fluctuation of speed amplitude is ± 100 at a high speed.As shown in Figure 5, it is wind at a high speed that air-blower control exports mean wind speed, and after 5s, motor increases by the change controlled wind speed of rotating speed, and lasting 3s, and the change that then motor controls rotating speed again makes wind speed get back to mean wind speed, and lasting 5s.Then, electric machine controller rotating speed makes wind speed reduce, and gets back to mean wind speed after low-speed region continues 10s.This process is exactly a cycle period, and the fluctuating range of motor speed is ± 100.Blower fan in air-conditioner and motor coordinate jointly, make to blow according to cycle period in the process of whole air-supply, and the wind exported according to above-mentioned Control timing sequence is natural wind simulating.
Known by Fig. 4 and Fig. 5, the Control timing sequence that different indoor environment temperatures adopts is identical, and just average speed is different with the speed of fluctuation.Namely when indoor environment temperature is higher, the mean wind speed in Control timing sequence is larger, and turbulivity is larger, and the comfort of people is better.Namely Control timing sequence obtains according to the sampled data of natural wind, thus utilize Control timing sequence to export natural wind closer to natural wind to control air-conditioner, and, due to the human body comfort that the natural wind of simulation is considered, the factor affecting human comfort is eliminated in natural wind by correction feature parameter, the natural wind that air-conditioner is exported brings user better comfort level, to solve in prior art and while the problem of accurate simulation natural wind, can not can also improve the comfort level of human body.
Air-conditioner can the Control timing sequence figure shown in storage list 1 and Fig. 2, data in table 1 correspond in Fig. 2 and control by air-conditioner, also multiple Control timing sequence figure can be stored, the corresponding indoor environment temperature of each Control timing sequence figure, and the mean wind speed described in Control timing sequence figure under this indoor environment temperature and fluctuating range etc., do not limit herein.
Alternatively, each cycle period of Control timing sequence comprises first time period, the second time period, the 3rd time period and the 4th time period, exports nature bellows chamber draw together according to Control timing sequence: once export wind corresponding to mean wind speed, higher than wind corresponding to the wind of mean wind speed, mean wind speed and the wind lower than mean wind speed in first time period, the second time period, the 3rd time period and the 4th time period; Or once export wind corresponding to mean wind speed, lower than wind corresponding to the wind of mean wind speed, mean wind speed and the wind higher than mean wind speed in first time period, the second time period, the 3rd time period and the 4th time period.
As shown in Figure 4 and Figure 5, each cycle period comprises the wind higher than mean wind speed and the wind lower than mean wind speed, and the duration higher than the wind of mean wind speed is less than the duration of the wind lower than mean wind speed, the natural wind simulated with this is more gentle comfortable.Because the wind direction moment of natural wind is all in change, but, in longer time span, the cardinal wind of natural wind presents more stable characteristic, therefore, adopt mean wind speed as the cardinal wind of natural wind simulating, regulate instantaneous wind speed with the speed of 3s to a 5s pulse, make the natural wind access expansion wind more simulated.
Wherein, in the Control timing sequence shown in Fig. 2, Fig. 4 and Fig. 5, when adjacent two time periods switch, the speed of 50rpm/10s is adopted to switch.
In order to meet the characteristic of the wind direction moment change of natural wind simulating, the wind deflector that can also control air-conditioner up and down or swing to regulate the change of wind direction.
Pass through above-described embodiment, Control timing sequence is adopted to control blower fan and the motor of air-conditioner, the rotating speed controlling blower fan exports the wind of mean wind speed, the rotation controlling motor makes the wind exported have turbulivity, thus the wind making air-conditioner blow is closer to natural wind, solving in prior art can not the effect of accurate simulation natural wind.
Embodiment 3
The embodiment of the present invention additionally provides a kind of device of natural wind simulating.As shown in Figure 6, the device of this natural wind simulating comprises: collecting unit 62, input block 64 and generation unit 66.
Collecting unit 62 is for gathering the sample data of natural wind and the characteristic parameter extracted in sample data.Which kind of which kind of simulate natural wind just gather the sample data of natural wind and extract corresponding characteristic parameter.Often kind of natural wind all has the characteristic parameter of one's own feature, therefore, just can simulate corresponding natural wind according to these characteristic parameters.So, in order to these characteristic parameters can be obtained, when gathering the sample data of natural wind just can in ocean, the area collection such as grassland and forest, thus ensure that the characteristic parameter of extraction can embody the feature of corresponding natural wind.
Input block 64 for characteristic parameter is input to characterize thermal comfort index model in revise characteristic parameter, obtain revised characteristic parameter.Thermal comfort index and PMV-PPD index are a kind of indexs evaluated blowing comfortableness.The numerical value of this index is larger, and meaning rate with thumb down is higher, and comfortableness of namely drying is poor; Numerical value is less, and meaning rate with thumb down is lower, and comfortableness of namely drying is higher.Therefore, revise by the characteristic parameter of extraction is input in thermal comfort index, make revised characteristic parameter can also meet the requirement of human body to blowing comfort level while the feature embodying natural wind.
Generation unit 66 is for generating the Control timing sequence of natural wind simulating according to revised characteristic parameter, wherein, Control timing sequence exports natural wind for controlling air-conditioner.According to the feature that the speed of natural wind is partial velocities, when generating Control timing sequence, can generate according to air average speed and air-flow turbulivity and there is partial velocities feature simulating nature divide, namely higher than mean wind speed wind speed shared by time compared with the time shared by the wind speed lower than mean wind speed, the time shared by the former is shorter.
By above-described embodiment, collecting sample data under the natural environment corresponding to the natural wind of simulation also extract characteristic parameter, make the natural wind simulated closer to the natural wind in natural environment.Meanwhile, owing to adopting the model of thermal comfort index to revise the characteristic parameter extracted, make the natural wind simulated bring more comfortable experience to human body, improve the comfortableness of natural wind.
Alternatively, revised characteristic parameter comprises mean wind speed and air-flow turbulivity, and generation unit comprises: determination module, for determining the maximum wind velocity and the minimum windspeed that export natural wind according to air stream turbulence degree; Acquisition module, for obtaining the wind speed distribution characteristics of natural wind; Generation module, for generating Control timing sequence according to wind speed distribution characteristics, mean wind speed, maximum wind velocity and minimum windspeed.
Adopt the comfortableness of model to blowing characterizing thermal comfort index to control, the model characterizing thermal comfort index can be following formula:
PD＝(34-t
a)(v-0.05)
0.62·(0.37vTu+3.14)
In formula: PD is the percent dissatisfied caused of drying, unit %; t
afor air themperature, unit DEG C; V is mean wind speed,
wherein N is the measuring point number of discrete wind speed sample, v
ibe the speed of i-th discrete wind speed sample, unit m/s; As v<0.05m/s, get v=0.05m/s; Tu is turbulence intensity,
wherein
the standard deviation of fluctuations in wind speed,
Percent dissatisfied index PD follows air themperature, air average speed, air stream turbulence degree relevant, and has the greatest impact by average speed, and air themperature reduces then percent dissatisfied and increases; Mean wind speed improves then percent dissatisfied and increases; Turbulivity increase then percent dissatisfied improves.By controlling jointly controlling air themperature, air average speed and air-flow turbulivity, reduce the percent dissatisfied of blowing.Namely by regulating air themperature, average speed and air-flow turbulivity to regulate percent dissatisfied, revised characteristic parameter can be drawn when percent dissatisfied is lower.
Continue the long period because natural wind has low wind speed, high wind speed continues the partial velocities characteristic of short period, therefore, generates Control timing sequence according to the wind speed distribution characteristics of natural wind, mean wind speed, maximum wind velocity and minimum windspeed.Control timing sequence is in periodically sinusoidal function change, and the Control timing sequence of generation as shown in Figure 2.Wherein, instantaneous wind speed=mean wind speed+fluctuation wind speed, namely
Y=X+Asin (2 π ft), X is mean speed, and A is fluctuation rotating speed.
The instantaneous velocity of air flowing any instant can be expressed as
wherein
be average speed, v ' is velocity perturbation.Tu turbulence intensity is defined as the standard deviation of velocity perturbation and the ratio of average speed, namely
it illustrates the fluctuating level of flowing in a period of time.
Utilize revised characteristic parameter to generate Control timing sequence and can improve the comfort level of natural wind to human body of simulation, reduce air conditioning energy consumption, and reduce mechanical blowing and cause user to suffer from the risk of air conditioner disease.
Pass through above-described embodiment, because sample data gathers in natural environment, not by the setting position of outdoor machine of air-conditioner and the impact of environment, avoid the error of sampling, therefore, the characteristic parameter extracted from sample data accurately can reflect the feature of the natural wind in natural environment, and utilize the model characterizing thermal comfort index to revise the characteristic parameter extracted, when making the Control timing sequence generated according to revised parameter that air-conditioner is blown, the simulation wind sent, closer to natural wind, reaches the effect of accurate simulation natural wind.
Embodiment 4
The embodiment of the present invention additionally provides a kind of air-supply arrangement of air-conditioner.As shown in Figure 7, the air-supply arrangement of this air-conditioner comprises: timing acquisition unit 72 and control unit 74.
Timing acquisition unit 72 is for obtaining the Control timing sequence for natural wind simulating, Control timing sequence generates according to the characteristic parameter revised, and the characteristic parameter of correction is obtained the characteristic parameter correction of extracting from the sample data of natural wind by the model characterizing thermal comfort index.
Control unit 74 is for exporting natural wind according to Control timing sequence.
Such as, as shown in Figure 4, current indoor environment temperature is less than 25 DEG C, and mean speed is middling speed, fluctuation of speed amplitude is ± 50, then air-blower control exports mean wind speed, the i.e. wind of middling speed, after 5s, motor is increased by the change controlled wind speed of rotating speed, and continuing 3s, the change that then motor controls rotating speed again makes wind speed get back to mean wind speed, and continues 5s.Then, electric machine controller rotating speed makes wind speed reduce, and gets back to mean wind speed after low-speed region continues 10s.This process is exactly a cycle period, and the fluctuating range of motor speed is ± 50.Blower fan in air-conditioner and motor coordinate jointly, make to blow according to cycle period in the process of whole air-supply, and the wind exported according to above-mentioned Control timing sequence is natural wind simulating.
From the parameter characterized in the model of thermal comfort index, indoor environment temperature, mean wind speed and turbulivity affect comfort level, therefore, adjust corresponding mean wind speed and turbulivity according to indoor environment temperature.Such as, according to shown in table 1, current indoor environment temperature is greater than 30 DEG C, and mean speed is that fluctuation of speed amplitude is ± 100 at a high speed.As shown in Figure 5, it is wind at a high speed that air-blower control exports mean wind speed, and after 5s, motor increases by the change controlled wind speed of rotating speed, and lasting 3s, and the change that then motor controls rotating speed again makes wind speed get back to mean wind speed, and lasting 5s.Then, electric machine controller rotating speed makes wind speed reduce, and gets back to mean wind speed after low-speed region continues 10s.This process is exactly a cycle period, and the fluctuating range of motor speed is ± 100.Blower fan in air-conditioner and motor coordinate jointly, make to blow according to cycle period in the process of whole air-supply, and the wind exported according to above-mentioned Control timing sequence is natural wind simulating.
Known by Fig. 4 and Fig. 5, the Control timing sequence that different indoor environment temperatures adopts is identical, and just average speed is different with the speed of fluctuation.Namely when indoor environment temperature is higher, the mean wind speed in Control timing sequence is larger, and turbulivity is larger, and the comfort of people is better.Namely Control timing sequence obtains according to the sampled data of natural wind, thus utilize Control timing sequence to export natural wind closer to natural wind to control air-conditioner, and, due to the human body comfort that the natural wind of simulation is considered, the factor affecting human comfort is eliminated in natural wind by correction feature parameter, the natural wind that air-conditioner is exported brings user better comfort level, to solve in prior art and while the problem of accurate simulation natural wind, can not can also improve the comfort level of human body.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
In the above embodiment of the present invention, the description of each embodiment is all emphasized particularly on different fields, in certain embodiment, there is no the part described in detail, can see the associated description of other embodiments.
In several embodiments that the application provides, should be understood that, disclosed technology contents, the mode by other realizes.Wherein, device embodiment described above is only schematic, the such as division of described unit, can be that a kind of logic function divides, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the INDIRECT COUPLING of unit or module or communication connection can be electrical or other form.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed on multiple unit.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.
If described integrated unit using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words or all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprises all or part of step of some instructions in order to make a computer equipment (can be personal computer, server or the network equipment etc.) perform method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, read-only storage (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), portable hard drive, magnetic disc or CD etc. various can be program code stored medium.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a method for natural wind simulating, is characterized in that, comprising:
Gather the sample data of natural wind and the characteristic parameter extracted in described sample data;
Described characteristic parameter is input to characterize thermal comfort index model in revise described characteristic parameter, obtain revised characteristic parameter;
Generate the Control timing sequence of natural wind simulating according to described revised characteristic parameter, wherein, described Control timing sequence exports natural wind for controlling air-conditioner.
2. method according to claim 1, is characterized in that, described revised characteristic parameter comprises mean wind speed and air-flow turbulivity, comprises according to the Control timing sequence that described revised characteristic parameter generates natural wind simulating:
The maximum wind velocity and the minimum windspeed that export natural wind is determined according to described air stream turbulence degree;
Obtain the wind speed distribution characteristics of natural wind;
Described Control timing sequence is generated according to described wind speed distribution characteristics, described mean wind speed, described maximum wind velocity and described minimum windspeed.
3. method according to claim 1, is characterized in that, described characteristic parameter is input to characterize thermal comfort index model in revise described characteristic parameter, obtain revised characteristic parameter and comprise:
Obtain current signature parameter, repeat following steps, until the model of described sign thermal comfort index exports preset thermal comfort index:
By described current signature parameters input in the model of described sign thermal comfort index, obtain the first thermal comfort index;
Judge whether described first thermal comfort index meets and preset thermal comfort index;
If so, then determine that described current signature parameter is described revised characteristic parameter;
If not, then adjust described characteristic parameter, using the characteristic parameter after adjustment as described current signature parameter.
4., according to the method described in claim 3, it is characterized in that, described characteristic parameter comprise in air themperature, air average speed and air-flow turbulivity one of at least.
5. an air supply method for air-conditioner, is characterized in that, comprising:
Obtain the Control timing sequence being used for natural wind simulating, described Control timing sequence generates according to the characteristic parameter revised, and the characteristic parameter of correction is obtained the characteristic parameter correction of extracting from the sample data of natural wind by the model characterizing thermal comfort index;
Natural wind is exported according to described Control timing sequence.
6. method according to claim 5, is characterized in that, each cycle period of described Control timing sequence comprises first time period, the second time period, the 3rd time period and the 4th time period, exports nature bellows chamber draw together according to described Control timing sequence:
Wind corresponding to mean wind speed is once exported, higher than wind corresponding to the wind of described mean wind speed, described mean wind speed and the wind lower than described mean wind speed in described first time period, described second time period, described 3rd time period and described 4th time period; Or
Wind corresponding to mean wind speed is once exported, lower than wind corresponding to the wind of described mean wind speed, described mean wind speed and the wind higher than described mean wind speed in described first time period, described second time period, described 3rd time period and described 4th time period.
7. method according to claim 6, is characterized in that, the duration of the described wind higher than described mean wind speed is less than the described duration lower than the wind of described mean wind speed.
8. a device for natural wind simulating, is characterized in that, comprising:
Collecting unit, for gathering the sample data of natural wind and the characteristic parameter extracted in described sample data;
Input block, for described characteristic parameter is input to characterize thermal comfort index model in revise described characteristic parameter, obtain revised characteristic parameter;
Generation unit, for generating the Control timing sequence of natural wind simulating according to described revised characteristic parameter, wherein, described Control timing sequence exports natural wind for controlling air-conditioner.
9. device according to claim 8, is characterized in that, described revised characteristic parameter comprises mean wind speed and air-flow turbulivity, and described generation unit comprises:
Determination module, for determining the maximum wind velocity and the minimum windspeed that export natural wind according to described air stream turbulence degree;
Acquisition module, for obtaining the wind speed distribution characteristics of natural wind;
Generation module, for generating described Control timing sequence according to described wind speed distribution characteristics, described mean wind speed, described maximum wind velocity and described minimum windspeed.
10. an air-supply arrangement for air-conditioner, is characterized in that, comprising:
Timing acquisition unit, for obtaining the Control timing sequence for natural wind simulating, described Control timing sequence generates according to the characteristic parameter revised, and the characteristic parameter of correction is obtained the characteristic parameter correction of extracting from the sample data of natural wind by the model characterizing thermal comfort index;
Control unit, for exporting natural wind according to described Control timing sequence.
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