The content of the invention
The invention provides a kind of air-conditioning PTC electric heater Poewr control method, the control accuracy to temperature is improve.
In order to solve the above technical problems, the present invention is achieved using following technical proposals：
A kind of air-conditioning PTC electric heater Poewr control method, indoor apparatus of air conditioner has blower fan, at least two PTC electric heaters, instituteThe method of stating includes：
（1）Obtain indoor environment temperature；
（2）Calculate the difference △ T of design temperature and indoor ring temperature；
（3）The operation of electric heater and blower fan is controlled according to difference △ T：
（31）If △ T >=the first sets difference, all of electric heater is opened, control blower fan is run with the first setting speed；After all of electric heater operation setting time section, the climbing speed adjustment rotation speed of fan according to indoor environment temperature；
（32）If the second setting difference≤setting differences of △ T ＜ first, opens an electric heater, control blower fan sets with secondDetermine rotating speed operation；After an electric heater operation setting time section, the climbing speed according to indoor environment temperature determines whetherOpen other electric heaters and adjustment rotation speed of fan；
（33）If the 3rd setting difference≤setting differences of △ T ＜ second, opens an electric heater, control blower fan sets with the 3rdDetermine rotating speed operation；After an electric heater operation setting time section, the climbing speed adjustment blower fan according to indoor environment temperatureRotating speed；
（34）If the 4th setting difference≤setting differences of △ T ＜ the 3rd, opens an electric heater, control blower fan sets with the 4thDetermine rotating speed operation；After an electric heater operation setting time section, the climbing speed adjustment blower fan according to indoor environment temperatureRotating speed；
Wherein, the setting speeds of the first the 3rd setting speed ＞ of setting speed >=the second setting speed ＞ the 4th.
Further, in step（31）In, after all of electric heater operation setting time section, according to indoor environment temperatureThe climbing speed adjustment rotation speed of fan of degree；Specifically include：
After all of electric heater operation setting time section, the climbing speed of indoor environment temperature is obtained；
If climbing speed >=the first sets rising value, rotation speed of fan is constant；
If the second setting rising value≤setting rising values of climbing speed ＜ first, improves rotation speed of fan to the 5th setting speed；
If climbing speed ＜ second sets rising value, rotation speed of fan to the 6th setting speed is improved；
6th setting speed is more than the 5th setting speed.
Further, indoor apparatus of air conditioner has two PTC electric heaters, in step（32）In, in an electric heaterAfter operation setting time section, the climbing speed according to indoor environment temperature determines whether to open other electric heaters and adjustment windMachine rotating speed；Specifically include：
After one electric heater operation setting time section, the climbing speed of indoor environment temperature is obtained；
If climbing speed >=the first sets rising value, rotation speed of fan is constant；
If the second setting rising value≤setting rising values of climbing speed ＜ first, improves rotation speed of fan to the 7th setting speed；
If climbing speed ＜ second sets rising value, another electric heater is opened, and reduce rotation speed of fan to the 8th settingRotating speed.
Further, in step（33）In, after an electric heater operation setting time section, according to indoor environment temperatureThe climbing speed adjustment rotation speed of fan of degree；Specifically include：
After one electric heater operation setting time section, the climbing speed of indoor environment temperature is obtained；
If climbing speed >=the first sets rising value, rotation speed of fan is reduced, until climbing speed is less than the first setting rising value；
If the second setting rising value≤setting rising values of climbing speed ＜ first, rotation speed of fan is constant；
If climbing speed ＜ second sets rising value, rotation speed of fan to the 9th setting speed is improved.
Further, in step（34）In, after an electric heater operation setting time section, according to indoor environment temperatureThe climbing speed adjustment rotation speed of fan of degree；Specifically include：
After one electric heater operation setting time section, the climbing speed of indoor environment temperature is obtained；
If climbing speed >=the first sets rising value, rotation speed of fan is reduced；When △ T ＜ the 5th set difference, by PID controlRotation speed of fan so that difference △ T are 0；
If the second setting rising value≤setting rising values of climbing speed ＜ first, rotation speed of fan is constant；When △ T ＜ the 5th set poorDuring value, by PID control rotation speed of fan so that difference △ T are 0；
If climbing speed ＜ second sets rising value, rotation speed of fan is improved；When △ T ＜ the 5th set difference, by PID controlRotation speed of fan so that difference △ T are 0；
Wherein, the 4th setting difference ＜ the 5th sets difference ＜ the 3rd and sets difference.
A kind of air-conditioning PTC electric heater output control device, indoor apparatus of air conditioner has blower fan, at least two PTC electrical heatingDevice, described device includes：Temperature acquisition module, for obtaining indoor environment temperature；Computing module, for calculate design temperature withThe difference △ T of indoor ring temperature；Control module, the operation for controlling electric heater and blower fan according to difference △ T：If △ T >=First setting difference, then open all of electric heater, and control blower fan is run with the first setting speed；In all of electric heaterAfter operation setting time section, the climbing speed adjustment rotation speed of fan according to indoor environment temperature；If second setting difference≤△ T ＜First setting difference, then open an electric heater, and control blower fan is run with the second setting speed；In an electric heater operationAfter setting time section, the climbing speed according to indoor environment temperature determines whether that opening other electric heaters and adjustment blower fan turnsSpeed；If the 3rd setting difference≤setting differences of △ T ＜ second, opens an electric heater, control blower fan is turned with the 3rd settingSpeed operation；After an electric heater operation setting time section, the climbing speed adjustment rotation speed of fan according to indoor environment temperature；If the 4th setting difference≤setting differences of △ T ＜ the 3rd, opens an electric heater, control blower fan is transported with the 4th setting speedOK；After an electric heater operation setting time section, the climbing speed adjustment rotation speed of fan according to indoor environment temperature；ItsIn, the setting speeds of the first the 3rd setting speed ＞ of setting speed >=the second setting speed ＞ the 4th.
Further, the control module is additionally operable to, when △ T >=the first sets difference：All of electric heater operationAfter setting time section, the climbing speed of indoor environment temperature is obtained；If climbing speed >=the first sets rising value, blower fan is controlledRotating speed is constant；If the second setting rising value≤setting rising values of climbing speed ＜ first, improves rotation speed of fan to the 5th settingRotating speed；If climbing speed ＜ second sets rising value, rotation speed of fan to the 6th setting speed is improved；6th setting speed is more than5th setting speed.
Further, indoor apparatus of air conditioner has two PTC electric heaters, and the control module is additionally operable to, is set secondWhen determining difference≤setting differences of △ T ＜ first：After one electric heater operation setting time section, the upper of indoor environment temperature is obtainedRise speed；If climbing speed >=the first sets rising value, control rotation speed of fan is constant；If the second setting rising value≤upper raising speedRate ＜ first sets rising value, then improve rotation speed of fan to the 7th setting speed；If climbing speed ＜ second sets rising value,Another electric heater is opened, and reduces rotation speed of fan to the 8th setting speed.
Further, the control module is additionally operable to, when the 3rd sets difference≤setting differences of △ T ＜ second：OneAfter individual electric heater operation setting time section, the climbing speed of indoor environment temperature is obtained；If in climbing speed >=the first settingAppreciate, then reduce rotation speed of fan, until climbing speed is less than the first setting rising value；If second setting rising value≤climbing speed＜ first sets rising value, then control rotation speed of fan constant；If climbing speed ＜ second sets rising value, rotation speed of fan is improvedTo the 9th setting speed.
Further, the control module is additionally operable to, when the 4th sets difference≤setting differences of △ T ＜ the 3rd：OneAfter individual electric heater operation setting time section, the climbing speed of indoor environment temperature is obtained；If in climbing speed >=the first settingAppreciate, reduce rotation speed of fan；When △ T ＜ the 5th set difference, by PID control rotation speed of fan so that difference △ T are 0；IfThe second setting rising value≤setting rising values of climbing speed ＜ first, control rotation speed of fan is constant；When △ T ＜ the 5th set differenceWhen, by PID control rotation speed of fan so that difference △ T are 0；If climbing speed ＜ second sets rising value, improve blower fan and turnSpeed；When △ T ＜ the 5th set difference, by PID control rotation speed of fan so that difference △ T are 0；Wherein, the 4th setting differenceThe setting differences of ＜ the 5th ＜ the 3rd sets difference.
Compared with prior art, advantages and positive effects of the present invention are：Air-conditioning PTC electric heater power control of the inventionMethod and device processed, by obtaining indoor environment temperature；Calculate the difference △ T of design temperature and indoor ring temperature；According to difference △ TThe operation of control PTC electric heater and blower fan, the heating amount to PTC electric heater carries out accurate adjustment, improves to interiorThe control accuracy of environment temperature, realization is precisely controlled to indoor environment temperature.
After specific embodiment of the invention is read in conjunction with the figure, the other features and advantages of the invention will become more clearChu.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below with reference to drawings and Examples,The present invention is described in further detail.
A kind of air-conditioning PTC electric heater Poewr control method, mainly comprises the steps, shown in Figure 1.
Indoor apparatus of air conditioner has blower fan, at least two PTC electric heaters, and PTC electric heater is arranged on air outlet of indoor setPlace, the wind speed of blower fan is different, the heating amount of PTC electric heater（Performance number）It is different.In the present embodiment, have two with indoor setIllustrated as a example by individual PTC electric heater.
Step S1：Obtain indoor environment temperature.
Step S2：Calculate the difference △ T of design temperature and indoor ring temperature.
Design temperature is target temperature.
Step S3：The operation of PTC electric heater and blower fan is controlled according to difference △ T.
Specifically：
First, when △ T >=the first sets difference, following step is performed：
（11）All of electric heater is opened, control blower fan is run with the first setting speed.
In the present embodiment, first difference as 3 DEG C is set.First setting speed is 85%Xmax, and Xmax is that blower fan is maximum to be turnedSpeed.
（12）After all of electric heater operation setting time section（As after 5 minutes）, according to the upper of indoor environment temperatureRise speed adjust rotation speed of fan.
The step specifically includes following step：
（12-1）After all electric heater operation setting time sections, the climbing speed of indoor environment temperature is obtained.
（12-2）If climbing speed >=the first sets rising value, control rotation speed of fan is constant；
If the second setting rising value≤setting rising values of climbing speed ＜ first, improves rotation speed of fan to the 5th setting speed；
If climbing speed ＜ second sets rising value, rotation speed of fan to the 6th setting speed is improved.
In the present embodiment, first rising value as 0.5 DEG C/5min is set, second sets rising value as 0 DEG C/5min.6thSetting speed is more than the 5th setting speed, and the 5th setting speed is 90% Xmax, and the 6th setting speed is 95% Xmax.
Therefore, when △ T >=the first sets difference, all of electric heater is opened, control blower fan is with the first setting speedOperation so that indoor temperature rapid increase；After electric heater operation setting time section, according to the climbing speed of indoor environment temperatureTo adjust rotation speed of fan, both cause indoor temperature rapid increase, avoid again temperature rise it is too fast cause waste.
2nd, when second sets difference≤setting differences of △ T ＜ first, following step is performed：
（21）An electric heater is opened, control blower fan is run with the second setting speed.
In the present embodiment, second difference as 2 DEG C is set, the second setting speed is 85%Xmax.
（22）After an electric heater operation setting time section（As after 5 minutes）, according to the rising of indoor environment temperatureSpeed determines whether to open other electric heaters and adjustment rotation speed of fan.
In the present embodiment, indoor set has two PTC electric heaters, and the step specifically includes following step：
（22-1）After one electric heater operation setting time section, the climbing speed of indoor environment temperature is obtained.
（22-2）If climbing speed >=the first sets rising value, control rotation speed of fan is constant；
If the second setting rising value≤setting rising values of climbing speed ＜ first, improves rotation speed of fan to the 7th setting speed；
If climbing speed ＜ second sets rising value, another electric heater is opened, and reduce rotation speed of fan to the 8th settingRotating speed.
In the present embodiment, the 7th setting speed is 90% Xmax, and the 8th setting speed is 80% Xmax.
Therefore, when second sets difference≤△ T ＜ first setting difference, open an electric heater, control blower fan withSecond setting speed is run；After electric heater operation setting time section, the climbing speed according to indoor environment temperature determines whetherOther electric heaters and adjustment rotation speed of fan are opened, indoor temperature rapid increase is both caused, avoids temperature to rise too fast making againInto waste.
3rd, when the 3rd sets difference≤setting differences of △ T ＜ second, following step is performed：
（31）An electric heater is opened, control blower fan is run with the 3rd setting speed.
In the present embodiment, the 3rd difference is set as 1 DEG C, the 3rd setting speed is 80% Xmax.
（32）After an electric heater operation setting time section（As after 5 minutes）, according to the rising of indoor environment temperatureSpeed adjust rotation speed of fan.
The step specifically includes following step：
（32-1）After one electric heater operation setting time section, the climbing speed of indoor environment temperature is obtained.
（32-2）If climbing speed >=the first sets rising value, rotation speed of fan is reduced, for example rotation speed of fan is with 5%The decrease of speed of Xmax/5min, until climbing speed is less than the first setting rising value；
If the second setting rising value≤setting rising values of climbing speed ＜ first, control rotation speed of fan is constant；
If climbing speed ＜ second sets rising value, rotation speed of fan to the 9th setting speed is improved.
In the present embodiment, the 9th setting speed is 85% Xmax.
Therefore, when the 3rd sets difference≤△ T ＜ second setting difference, open an electric heater, control blower fan with3rd setting speed is run；After electric heater operation setting time section, the climbing speed adjustment blower fan according to indoor environment temperatureRotating speed；Both so that indoor temperature rapid increase, avoid temperature to rise again and too fast cause to waste.
4th, when the 4th sets difference≤setting differences of △ T ＜ the 3rd, following step is performed：
（41）An electric heater is opened, control blower fan is run with the 4th setting speed.
In the present embodiment, the 4th difference is set as 0 DEG C, the 4th setting speed is 70% Xmax.
（42）After an electric heater operation setting time section（As after 5 minutes）, according to the rising of indoor environment temperatureSpeed adjust rotation speed of fan.
The step specifically includes following step：
（42-1）After one electric heater operation setting time section, the climbing speed of indoor environment temperature is obtained.
（42-2）If climbing speed >=the first sets rising value, rotation speed of fan is reduced, for example rotation speed of fan is with 1%The decrease of speed of Xmax/5min；When △ T ＜ the 5th set difference, by PID control rotation speed of fan so that difference △ T are 0.
If the second setting rising value≤setting rising values of climbing speed ＜ first, control rotation speed of fan is constant；As △ T ＜During the 5th setting difference, by PID control rotation speed of fan so that difference △ T are 0.
If climbing speed ＜ second sets rising value, rotation speed of fan is improved；When △ T ＜ the 5th set difference, pass throughPID control rotation speed of fan so that difference △ T are 0.
Wherein, the 4th setting difference（0℃）The setting differences of ＜ the 5th ＜ the 3rd sets difference（1℃）.In the present embodiment,0.2 DEG C of the setting differences of 0 ＜ the 5th ＜.
Therefore, when the 4th sets difference≤△ T ＜ the 3rd setting difference, open an electric heater, control blower fan with4th setting speed is run；After electric heater operation setting time section, the climbing speed adjustment blower fan according to indoor environment temperatureRotating speed；Also, when △ T ＜ the 5th set difference, by PID control rotation speed of fan, principle is simple, easy to use, applicabilityBy force, strong robustness.
The setting speeds of first the 3rd setting speed ＞ of setting speed >=the second setting speed ＞ the 4th.
The air-conditioning PTC electric heater Poewr control method of the present embodiment, by obtaining indoor environment temperature；Calculate setting temperatureThe difference △ T of degree and indoor ring temperature；The operation of PTC electric heater and blower fan is controlled according to difference △ T, to PTC electric heaterHeating amount carry out accurate adjustment, improve the control accuracy to indoor environment temperature, realize to the accurate of indoor environment temperatureControl.
The air-conditioning PTC electric heater Poewr control method of the present embodiment, solves temperature control precision in the prior art lowProblem, realize the precise control to temperature, it is to avoid impact of the powerful electric heater frequent start-stop to power network.
Based on the design of above-mentioned air-conditioning PTC electric heater Poewr control method, the present embodiment also proposed a kind of air-conditioning PTCElectric heater capacity control device, indoor apparatus of air conditioner has blower fan, at least two PTC electric heaters, and the control device is mainIt is shown in Figure 2 including temperature acquisition module, computing module, control module etc..
Temperature acquisition module, for obtaining indoor environment temperature.
Computing module, the difference △ T for calculating design temperature and indoor ring temperature.
Control module, the operation for controlling electric heater and blower fan according to difference △ T.
Control module specifically for：
If the first, △ T >=the first setting difference, all of electric heater is opened, control blower fan is run with the first setting speed；After all of electric heater operation setting time section, the climbing speed adjustment rotation speed of fan according to indoor environment temperature.Control mouldBlock is additionally operable to, and after all of electric heater operation setting time section, obtains the climbing speed of indoor environment temperature；If climbing speed>=the first setting rising value, then control rotation speed of fan constant；If the second setting rising value≤settings of climbing speed ＜ first riseValue, then improve rotation speed of fan to the 5th setting speed；If the setting rising values of climbing speed ＜ second, improve rotation speed of fan to theSix setting speeds；6th setting speed is more than the 5th setting speed.
If the 2, the second setting difference≤△ T ＜ first setting difference, an electric heater is opened, control blower fan is with theTwo setting speeds are run；After an electric heater operation setting time section, the climbing speed according to indoor environment temperature determinesWhether other electric heaters and adjustment rotation speed of fan are opened.Indoor apparatus of air conditioner has two PTC electric heaters, and control module is alsoFor after an electric heater operation setting time section, obtaining the climbing speed of indoor environment temperature；If climbing speed >=the firstSetting rising value, then control rotation speed of fan constant；If the second setting rising value≤setting rising values of climbing speed ＜ first, carriesRotation speed of fan high is to the 7th setting speed；If climbing speed ＜ second sets rising value, another electric heater is opened, and dropLow rotation speed of fan is to the 8th setting speed.
If the 3, the 3rd setting difference≤△ T ＜ second setting difference, an electric heater is opened, control blower fan is with theThree setting speeds are run；After an electric heater operation setting time section, the climbing speed adjustment according to indoor environment temperatureRotation speed of fan.Control module is additionally operable to, and after an electric heater operation setting time section, obtains the upper raising speed of indoor environment temperatureRate；If climbing speed >=the first sets rising value, rotation speed of fan is reduced, until climbing speed is less than the first setting rising value；If the second setting rising value≤setting rising values of climbing speed ＜ first, control rotation speed of fan is constant；If climbing speed ＜Two setting rising values, then improve rotation speed of fan to the 9th setting speed.
If the 4, the 4th setting difference≤△ T ＜ the 3rd setting difference, an electric heater is opened, control blower fan is with theFour setting speeds are run；After an electric heater operation setting time section, the climbing speed adjustment according to indoor environment temperatureRotation speed of fan.Control module is additionally operable to, and after an electric heater operation setting time section, obtains the upper raising speed of indoor environment temperatureRate；If climbing speed >=the first sets rising value, rotation speed of fan is reduced；When △ T ＜ the 5th set difference, by PID controlRotation speed of fan so that difference △ T are 0；If the second setting rising value≤setting rising values of climbing speed ＜ first, control blower fan turnsSpeed is constant；When △ T ＜ the 5th set difference, by PID control rotation speed of fan so that difference △ T are 0；If climbing speed ＜Second setting rising value, improves rotation speed of fan；When △ T ＜ the 5th set difference, by PID control rotation speed of fan so that poorValue △ T are 0；Wherein, the 4th setting difference ＜ the 5th sets difference ＜ the 3rd and sets difference.
Wherein, the setting speeds of the first the 3rd setting speed ＞ of setting speed >=the second setting speed ＞ the 4th.
The course of work of specific air-conditioning PTC electric heater output control device, in above-mentioned air-conditioning PTC electric heaterDescribed in detail in Poewr control method, it will not go into details herein.
The air-conditioning PTC electric heater output control device of the present embodiment, by obtaining indoor environment temperature；Calculate setting temperatureThe difference △ T of degree and indoor ring temperature；The operation of PTC electric heater and blower fan is controlled according to difference △ T, to PTC electric heaterHeating amount carry out accurate adjustment, improve the control accuracy to indoor environment temperature, realize the accurate control to indoor environment temperatureSystem.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than is limited；Although with reference to foregoing realityExample is applied to be described in detail the present invention, for the person of ordinary skill of the art, still can be to foregoing implementationTechnical scheme described in example is modified, or carries out equivalent to which part technical characteristic；And these are changed or replaceChange, do not make the spirit and scope of the essence disengaging claimed technical solution of the invention of appropriate technical solution.