CN107388477A - The method for controlling number of revolution of indoor apparatus of air conditioner - Google Patents
The method for controlling number of revolution of indoor apparatus of air conditioner Download PDFInfo
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Abstract
The invention discloses a kind of method for controlling number of revolution of indoor apparatus of air conditioner, including：Obtain the operational mode of indoor set and determine the temperature difference of the rotating speed institute foundation of each fan, PID arithmetic is performed according to the temperature difference, obtains proportional, integral term and the differential term of the PID arithmetic of each fan；Toatl proportion item, total mark item and total differential term are obtained according to the proportional, integral term and differential term of the PID arithmetic of all fans；The relative size of the rotating speed of each fan is determined according to the operational mode, the weights for the rotating speed institute foundation for determining each fan are obtained according to the relative size of the rotating speed of the fan；Actual ratio item, actual integration item and the actual differential term for the rotating speed institute foundation for determining each fan are obtained according to weights；Determined according to the actual ratio item, actual integration item and actual differential term and control the rotating speed of each fan.Using the present invention, the uniformity of room temperature and air-supply comfortableness when can improve indoor set operation.
Description
Technical field
The invention belongs to air-conditioning technique field, is the control for being related to air-conditioning specifically, is to relate to more specifically
And the method for controlling number of revolution of indoor apparatus of air conditioner.
Background technology
Split type vertical air conditioner is so that it has larger refrigerated medium heat and is widely used.Existing most of vertical air conditioner
Air conditioner indoor machine uses a centrifugal fan and an air outlet, and centrifugal fan is located at indoor set middle and lower part, and air outlet is positioned at interior
Machine top, show the structure type that fan configures up and down with air outlet.In this structure type, air-flow is through centrifugal fan from room
The air inlet of interior machine bottom or bottom enters, blown out again from the air outlet on top, and airflow passes distance is longer, and capacity loss is big,
So that the air-supply of complete machine is less efficient.
To solve the problems, such as that said structure is present, there is a kind of new vertical air-conditioner indoor unit, the indoor set has
At least two air outlets being arranged above and below, each air outlet are correspondingly arranged a fan, in rear shell, correspond to the position of fan
Air inlet is set, air-flow can be shortened and flow through distance from air inlet to air outlet, and then reduces energy loss, improves complete machine
Air-supply efficiency.
, can opening with each fan of independent control for the vertical air-conditioner indoor unit with multiple air outlets and multiple fans
Stop and rotating speed, realize the air-supply of different air quantity.But in existing this indoor set each fan rotating speed control be divided into it is limited
Several gears, manually select gear and realize that fan is run with different rotating speeds.This rotating speed control mode subjectivity is strong, rotating speed choosing
Select narrow range, often occur because of the improper uniformity for causing to influence room temperature air outlet amount is improper of rotating speed control and
The problem of comfortableness of blowing.
The content of the invention
It is an object of the invention to provide the method for controlling number of revolution of indoor apparatus of air conditioner, by least two air outlets and
Rotation speed of the fan in the indoor set of at least two fans is controlled, and is improved the uniformity of room temperature when indoor set is run and is sent
Wind comfortableness.
For achieving the above object, the present invention is achieved using following technical proposals：
A kind of method for controlling number of revolution of indoor apparatus of air conditioner, the indoor set have the air outlet of at least two upper and lower arrangements, each
The air outlet is correspondingly arranged on a fan, and the control method includes：
Obtain the operational mode of indoor set and determine the temperature difference of the rotating speed institute foundation of each fan, according to each fan
The temperature difference of rotating speed institute foundation perform PID arithmetic, obtain proportional, integral term and the differential of the PID arithmetic of each fan
；The proportional, integral term and differential term of the PID arithmetic of all fans are summed respectively, obtain toatl proportion item, total mark item and
Total differential term；
The relative size of the rotating speed of each fan is determined according to the operational mode, according to the relative of the rotating speed of the fan
Acquiring size determines the weights of the rotating speed institute foundation of each fan；The weights meet that the weights of all fan institutes foundation are total
With for 1, the big fan of rotating speed has the weights for being more than the small fan institute foundation of rotating speed；
By the weights of each fan institute foundation respectively with the toatl proportion item, the total mark item and total differential
Item is multiplied, and obtains actual ratio item, actual integration item and the actual differential term of the rotating speed institute foundation for determining each fan；
Determined according to the actual ratio item, actual integration item and actual differential term and control the rotating speed of each fan.
Method as described above, the temperature difference of the rotating speed institute foundation for determining each fan is the return air temperature difference, air-out
One in the mouth temperature difference, the inner coil pipe temperature difference；The return air temperature and target chamber for the return air that the return air temperature difference is sucked according to fan
The difference of interior temperature determines；Leaving air temp of the air outlet temperature difference at the air outlet according to corresponding to fan goes out wind-warm syndrome with target
The difference of degree determines；The coil temperature and mesh for the indoor heat exchanger that the return air that the inner coil pipe temperature difference is sucked according to fan passes through
The difference for marking coil temperature determines.
Method as described above, the relative size of the rotating speed of each fan is determined according to the operational mode, specifically
Including：
If the operational mode is refrigeration mode, the rotating speed of top fan is more than the rotating speed of lower section fan；
If the operational mode is heating mode, the rotating speed of lower section fan is less than the rotating speed of top fan.
Method as described above, methods described also include：
If the operational mode is refrigeration mode, control the air supply direction of the air outlet of the top upward；
If the operational mode is heating mode, control the air supply direction of the air outlet of bottom downward.
Method as described above, the proportionality coefficient of the pid algorithm corresponding to each fan is according to the rotating speed for determining the fan
The temperature difference of institute's foundation determines；In the PID arithmetic, there is what is formed by multiple setting temperature difference increased successively multiple to set
Determine temperature range, the proportionality coefficient has different values in the different setting temperature ranges, and meets in the temperature difference
The proportionality coefficient in the big setting temperature range is not less than the ratio in the small setting temperature range of the temperature difference
Coefficient.
Method as described above, multiple setting temperature ranges, which comprise at least, the first setting temperature range, described
In first setting temperature range, the fan institute that the proportionality coefficient of the pid algorithm corresponding to the big fan of rotating speed is small more than rotating speed is right
The proportionality coefficient for the pid algorithm answered.
Method as described above, multiple setting temperature ranges, which comprise at least, the second setting temperature range, described
In second setting temperature range, the proportionality coefficient and the temperature difference correlation.
Method as described above, multiple setting temperature ranges, which comprise at least, the 3rd setting temperature range, described
In 3rd setting temperature range, corresponding to the proportionality coefficient and the small fan of rotating speed of the pid algorithm corresponding to the big fan of rotating speed
Pid algorithm proportionality coefficient it is equal.
Method as described above, it is described PID arithmetic is performed according to the actual temperature difference when, the maximum fan of rotating speed is corresponding
PID arithmetic computing is participated in using the change of the constant actual temperature difference and the actual temperature difference of size, corresponding to the fan of remaining rotating speed
PID arithmetic participates in computing using the change of the actual temperature difference and the actual temperature difference that reduce.
Compared with prior art, the advantages and positive effects of the present invention are：The rotating speed control of indoor set provided by the invention
Method, the indoor set of a fan is provided with for the air outlet with least two upper and lower arrangements and each air outlet, according to
Operational mode determines the relative size of the rotating speed of each fan, weights is determined according to the relative size of rotating speed, according to weights and base
The actual PID arithmetic result of each fan is determined in the result of temperature difference execution PID arithmetic, further according to the result of actual PID arithmetic
It is determined that and control the rotating speed of each fan, on the one hand, can realize to multiple rotation speeds of the fan based on operational mode and the temperature difference from
Dynamic control so that the air output of different air outlets blowout friction speeds, when improving indoor set operation the uniformity of room temperature and
Comfortableness, on the other hand the pid algorithm control rotation speed of the fan based on the temperature difference, can realize the continuous control to rotation speed of the fan and essence
True temperature control, further increase air-supply comfortableness.
After the embodiment of the present invention is read in conjunction with the figure, the other features and advantages of the invention will become more clear
Chu.
Brief description of the drawings
Fig. 1 is the flow chart of method for controlling number of revolution one embodiment based on indoor apparatus of air conditioner of the present invention.
Fig. 2 is one of the proportionality coefficient of pid algorithm and the temperature difference in the method for controlling number of revolution based on indoor apparatus of air conditioner of the present invention
Individual physical relationship schematic diagram.
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.
Fig. 1 is referred to, the figure show the stream of method for controlling number of revolution one embodiment based on indoor apparatus of air conditioner of the present invention
Cheng Tu.Specifically, the indoor set of the embodiment has the air outlet of at least two upper and lower arrangements, and each air outlet is correspondingly set
A fan is equipped with, is for example centrifugal fan or aerofoil fan.As shown in figure 1, the rotating speed of the indoor set of the type is controlled
Method, specifically the control method of the rotating speed of each fan is realized using the process comprised the steps：
Step 11：The temperature difference of the operational mode for obtaining indoor set and the rotating speed institute foundation for determining each fan, according to each fan
The temperature difference of rotating speed institute foundation perform PID arithmetic, obtain the proportional, integral term and differential term of the PID arithmetic of each fan；Will
Proportional, integral term and the differential term of the PID arithmetic of all fans are summed respectively, obtain toatl proportion item, total mark item and total micro-
Subitem.
The operational mode of indoor set includes but is not limited to refrigeration mode and heating mode, and operational mode can set for user
Mould-fixed, or the setting pattern that indoor set automatically determines according to environment.It is still automatic true regardless of pattern is set for user
Fixed setting pattern, can easily it be obtained by the controller of air-conditioning.
In this embodiment, the rotating speed of each fan is determined by the temperature difference, also, each fan is corresponding with one
Determine the temperature difference of its rotating speed institute foundation.In a preferred embodiment, it is determined that the temperature difference of the rotating speed institute foundation of each fan is return air temperature
One in difference, the air outlet temperature difference, the inner coil pipe temperature difference.
Wherein, the difference of the return air temperature for the return air that the return air temperature difference is sucked according to fan and target indoor temperature determines.
The fan corresponding with each air outlet has certain air draught scope, for example, indoors on casing body formed with fan number
Identical air inlet is measured, each fan correspond to an air inlet, and return air is sucked from corresponding air inlet.So, inspection is passed through
Survey the EAT of air inlet corresponding to fan, you can obtain the return air temperature for the return air that fan is sucked.Target indoor temperature
It is the temperature for it is expected to reach in indoor set regulation rear chamber, the target indoor temperature can be user's design temperature, also can be
The temperature value that indoor set automatically determines according to setting rule.Likewise, being determined regardless of for which kind of mode, it can pass through air-conditioning
Controller easily obtains.
The difference of leaving air temp of the air outlet temperature difference at the air outlet according to corresponding to fan and target leaving air temp determines.
Specifically, each fan correspond to an air outlet, and the leaving air temp at air outlet passes through the temperature set at air outlet
Sensor detection obtains.Target leaving air temp is the leaving air temp of desired air outlet, can be user's design temperature, also can be
The temperature value that indoor set automatically determines according to setting rule.No matter being determined for which kind of mode, it can pass through the controller of air-conditioning
Easily obtain.The target leaving air temp of different air outlets can be with identical, can also be different, preferably identical temperature.
The coil temperature and target coil pipe temperature for the indoor heat exchanger that the return air that the inner coil pipe temperature difference is sucked according to fan passes through
The difference of degree determines.Indoor set can be the structure that each fan is correspondingly arranged on a heat exchanger and an air inlet, then, wind
The coil temperature for the indoor heat exchanger that the sucked return air of fan passes through is the coil temperature of the heat exchanger corresponding to fan.It is indoor
Machine can also be the structure with one big heat exchanger, then, the coil pipe for the indoor heat exchanger that the return air that fan is sucked passes through
Temperature is generally the coil temperature of the heat exchanger opening position nearest apart from fan inlet scoop.Target coil temperature is desired heat exchange
It the coil temperature of device, can be user's design temperature, also can be the temperature value that indoor set automatically determines according to setting rule.No matter
Determine for which kind of mode, can easily be obtained by the controller of air-conditioning.Also, the target coil pipe corresponding to different fans
Temperature can be with identical, can also be different, preferably identical temperature.
After obtaining the temperature difference corresponding to each fan, PID arithmetic is performed according to the temperature difference, obtains the PID arithmetic of each fan
Proportional, integral term and differential term.Specific acquisition process refers to follow-up description.
Then, the proportional, integral term and differential term of the PID arithmetic of all fans are summed respectively, acquisition toatl proportion item,
Total mark item and total differential term.
Step 12：The relative size of the rotating speed of each fan is determined according to operational mode, according to the relative of the rotating speed of fan
Acquiring size determines the weights of the rotating speed institute foundation of each fan.
Under same operational mode, the rotating speed requirement of each fan has relative size relation；Under different operational modes, each
The rotating speed of fan relative size relation can there is difference.Operational mode and the relative size relation of each rotation speed of the fan are to deposit
The known relation of storage, can easily it be got by the controller of air-conditioning.In control process, after getting operational mode, lead to
Cross and transfer the relation, you can it is determined that in this operating mode, the relative size of each rotation speed of the fan.
After the relative size of rotating speed of each fan is determined, obtained according to the relative size and determine each fan
The weights of rotating speed institute foundation.Moreover, weights meet：The weights summation of all fan institutes foundation is 1, and the big fan of rotating speed has big
In the weights of the small fan institute foundation of rotating speed.For example, for the indoor set with two fans, the big fan institute of rotating speed according to
According to weights be 0.6, the weights of the small wind speed institute foundation of rotating speed are 0.4.
Step 13：The actual ratio for determining each rotation speed of the fan institute foundation is obtained according to the weights of each fan institute foundation
Item, actual integration item and actual differential term.
Specifically, be the weights of each fan institute foundation are obtained with step 11 respectively toatl proportion item, total mark item and
Total differential term is multiplied, and obtains actual ratio item, actual integration item and the actual differential term for the rotating speed institute foundation for determining each fan.
Step 14：Determined according to actual ratio item, actual integration item and actual differential term and control the rotating speed of each fan.
Specifically, obtained according to actual ratio item, actual integration item and actual differential term as this PID arithmetic
Rotating speed correction value, the rotating speed of last time is modified, obtains this actual speed value.More specifically implementation process can join
Examine prior art.
By the weights of the big fan institute foundation of rotating speed are big, then, by the processing of step 13 and step 14, rotating speed is big
Fan finally has big rotating speed；Opposite, the weights of the small fan institute foundation of rotating speed are small, then finally also have small rotating speed.
The rotating speed of multiple fans of the method control indoor set formed using above-mentioned steps, on the one hand, can realize to more
Individual rotation speed of the fan automatically controlling based on operational mode and the temperature difference so that the air output of different air outlets blowout friction speeds, profit
The different air outputs having with different height position, it is possible to increase the uniformity and comfortableness of room temperature when indoor set is run；
On the other hand, the pid algorithm control rotation speed of the fan based on the temperature difference, can realize the continuous control to rotation speed of the fan and accurate control
Temperature, further increase air-supply comfortableness.
In a preferred embodiment, indoor set has the air outlet of two upper and lower arrangements, and respectively upper air outlet goes out with
Air port；Each air outlet is correspondingly arranged on a fan, forms top fan and lower section fan.Determined according to operational mode each
The relative size of the rotating speed of fan, is specifically included：If operational mode is refrigeration mode, the rotating speed of top fan is more than lower section fan
Rotating speed；If operational mode is heating mode, the rotating speed of lower section fan is less than the rotating speed of top fan.If moreover, operational mode
For refrigeration mode, control the air supply direction of the air outlet of the top upward；If operational mode is heating mode, bottom is controlled
The air supply direction of air outlet is downward.So, if operational mode is refrigeration mode, the top fan fan maximum as rotating speed,
It is assigned larger weights；Lower section fan is less than the fan of top fan as rotating speed, is assigned less weights.Due to lower section
The weights of fan are small, determine that the actual ratio item, actual integration item and actual differential term of rotating speed are also small, and the fan finally obtained turns
Speed is also small.Opposite, the weights of top fan are big, determine the actual ratio item, actual integration item and actual differential term of rotating speed
Greatly, the rotation speed of the fan finally obtained is also big.So as to, top rotation speed of the fan is higher than lower section rotation speed of the fan, and upper air outlet amount is big,
Because cold air can sink, upper air outlet amount is big, is advantageous to the uniformity of room temperature adjusting in larger scope.Also,
Upper air outlet general position is higher, and a large amount of cold airs will not be caused directly to blow to human body.Air outlet is further controlled to blow again
Direction is upward, can further improve air-supply uniformity and avoid cold air blow-through from improving air-supply comfortableness to human body.
Same mechanism, if operational mode is heating mode, the lower section fan fan maximum as rotating speed, be assigned compared with
Big weights；Top fan is less than the fan of lower section fan as rotating speed, is assigned less weights.Due to the power of lower section fan
Value is big, determines that the actual ratio item, actual integration item and actual differential term of rotating speed are also big, the rotation speed of the fan finally obtained is also big.
Opposite, the weights of top fan are small, determine that the actual ratio item, actual integration item and actual differential term of rotating speed are also small, finally
The rotation speed of the fan of acquisition is also small.So as to which lower section rotation speed of the fan is higher than top rotation speed of the fan, and lower air outlet amount is big, due to heat
Air can rise, and lower air outlet amount is big, be advantageous to the uniformity of room temperature adjusting in larger scope.Also, further
Control lower air outlet air supply direction downward again, can further improve air-supply uniformity.
In the method for controlling number of revolution of above-described embodiment, indoor set has multiple fans, and each fan is both needed to use and is based on
The PID arithmetic of the temperature difference, the result summation of all PID arithmetics carry out the distribution based on weights again afterwards.So, different fans
Importance of the result of PID arithmetic in overall result be it is different, in order to ensure indoor temperature regulation uniformity, rapidity and
Comfortableness, the result of the PID arithmetic of the big fan of rotating speed are particularly important.Also, when performing PID arithmetic based on the temperature difference, pid algorithm
In coefficient and the used temperature difference and the temperature difference change, the rotating speed result of acquisition is had a great influence, so can influence air-supply
Uniformity and comfortableness.It will be detailed below the preferred process method of the pid algorithm based on the temperature difference.
When determining rotation speed of the fan based on temperature difference execution PID arithmetic, the value of the proportionality coefficient in pid algorithm is to result shadow
Sound is larger.And the result of the PID arithmetic of the big fan of rotating speed is particularly important in overall result, accordingly, in a preferred embodiment,
The proportionality coefficient of pid algorithm corresponding to each fan determines according to the temperature difference for the rotating speed institute foundation for determining the fan.In PID
In computing, there is multiple setting temperature ranges that multiple setting temperature difference increased successively are formed.Proportionality coefficient is different
There is different values in setting temperature range, and meet that the proportionality coefficient in the big setting temperature range of the temperature difference is not less than
Proportionality coefficient in the small setting temperature range of the temperature difference.For example, referring to shown in Fig. 2 based on indoor apparatus of air conditioner of the present invention
The proportionality coefficient of pid algorithm and a physical relationship schematic diagram of the temperature difference in control method, the abscissa in figure is temperature difference Pn, is indulged
Coordinate is Proportional coefficient K p.In the Fig. 2, include the Proportional coefficient K p and temperature difference Pn of the pid algorithm of two fans relation
Curve map, wherein, 1., 3., 5. curve constitutes proportionality coefficient and temperature in the pid algorithm corresponding to the relatively small fan of rotating speed
The relation curve of difference, curve 2., 4., 5. constitute proportionality coefficient in the pid algorithm corresponding to the relatively large fan of rotating speed with
The relation curve of the temperature difference.As shown in Fig. 2 what is increased successively sets the temperature difference as 3, respectively 0 DEG C, 2 DEG C and 5 DEG C.3 setting temperature
Difference form 3 setting temperature ranges, be respectively [0 DEG C, 2 DEG C], (2 DEG C, 5 DEG C],（5 DEG C ,+∞）.The relatively small fan of rotating speed
Proportionality coefficient in corresponding pid algorithm and find out with being apparent from the relation curve of the temperature difference, set the temperature difference is minimum
Determine proportionality coefficient in temperature range [0 DEG C, 2 DEG C] be less than temperature difference setting temperature range placed in the middle (2 DEG C, 5 DEG C] in ratio system
Number, and setting temperature range that the temperature difference is placed in the middle (2 DEG C, 5 DEG C] in proportionality coefficient be less than the maximum setting temperature range of the temperature difference（5
DEG C ,+∞）Interior proportionality coefficient.Likewise, proportionality coefficient and the temperature difference in pid algorithm corresponding to the relatively large fan of rotating speed
Relation curve also meet that the proportionality coefficient in the big setting temperature range of the temperature difference is not less than in the small setting temperature difference model of the temperature difference
Enclose interior proportionality coefficient.The purpose that so handles and have technical effect that, if the temperature difference is big, using larger Proportional coefficient K p,
Accelerate the circulation of air to obtain larger rotation speed of the fan, the comfortableness of indoor temperature is reached with faster speed.And in temperature
In the case of difference is less, the control of rotation speed of the fan is carried out using relatively small Proportional coefficient K p, room is reached on the basis of energy-conservation
The comfort conditioning of interior temperature.
Also, in other preferred embodiments, for the ratio system of multiple pid algorithms corresponding to multiple fans
Number, also makees as defined below：
Multiple setting temperature ranges, which comprise at least, the first setting temperature range, and in the first setting temperature range, rotating speed is big
The proportionality coefficient of pid algorithm corresponding to fan is more than the proportionality coefficient of the pid algorithm corresponding to the small fan of rotating speed.Specific to
In Fig. 2, first set temperature range as [0 DEG C, 2 DEG C] and (2 DEG C, 5 DEG C], in the first setting temperature range, rotating speed is big
The proportionality coefficient of pid algorithm corresponding to fan be curve 2. and 4. in proportionality coefficient, the PID corresponding to the small fan of rotating speed
The proportionality coefficient of algorithm be curve 1. and 3. in proportionality coefficient, and curve 2. and 4. in proportionality coefficient 1. and 3. be more than curve
In proportionality coefficient.The proportionality coefficient of pid algorithm corresponding to the big fan of rotating speed is more than pid algorithm corresponding to the small fan of rotating speed
Proportionality coefficient so that the rotation speed of the fan that the pid algorithm of large scale coefficient is obtained is even larger than the pid algorithm institute of small scale coefficient
The rotation speed of the fan of acquisition, increase the result of the pid algorithm of the big fan of rotating speed proportion shared in overall result.
Multiple setting temperature ranges, which also comprise at least, the second setting temperature range, in the second setting temperature range, than
Example coefficient and temperature difference correlation.Specific in Fig. 2, second set temperature range as (2 DEG C, 5 DEG C], in second setting
In temperature range, proportionality coefficient and the pid algorithm corresponding to the small fan of rotating speed of the pid algorithm corresponding to the big fan of rotating speed
Proportionality coefficient with temperature difference correlation, specifically linear positive correlation.Because this second
Set in temperature range, it is relative bigger although the temperature difference is not maximum, change influence of the rotation speed of the fan on the temperature difference compared with
Greatly, once adjustment of rotational speed has lagged or error, more uncomfortable influence will be caused on the temperature difference, therefore, proportionality coefficient follows temperature
Poor real-time change, to reduce the more uncomfortable influence caused by the temperature difference because of rotation speed of the fan.
Multiple setting temperature ranges, which also comprise at least, the 3rd setting temperature range, in the 3rd setting temperature range, turns
The proportionality coefficient phase of pid algorithm corresponding to the proportionality coefficient of pid algorithm corresponding to the big fan of the speed fan small with rotating speed
Deng.Specific in Fig. 2, the 3rd set temperature range as（5 DEG C ,+∞）.In the 3rd setting temperature range, the temperature difference is larger, turns
The proportionality coefficient of pid algorithm corresponding to the proportionality coefficient of pid algorithm corresponding to the big fan of the speed fan small with rotating speed is equal
Using equal maximum ratio coefficient value, bigger rotation speed of the fan is obtained as much as possible to accelerate the circulation of air, with faster
Speed reaches the comfortableness and uniformity of indoor temperature.
In some other preferred embodiment, except the proportionality coefficient in pid algorithm is made above-mentioned preferred process mode it
Outside, the change that can also include to the temperature difference and the temperature difference employed in pid algorithm is turned into further preferred processing.Specifically, exist
In pid algorithm, PID arithmetic is joined using the change of the size constant actual temperature difference and the actual temperature difference corresponding to the maximum fan of rotating speed
With computing, PID arithmetic corresponding to the fan of remaining rotating speed participates in computing using the change of the actual temperature difference and the actual temperature difference that reduce.
Still by taking the indoor set with upper and lower two air outlets and upper and lower two fans as an example, under refrigeration mode, top wind
The rotating speed of fan is more than the rotating speed of lower section fan, that is, top fan is the big fan of rotating speed, lower section fan is the small wind of rotating speed
Fan.Definition:The currently practical temperature difference corresponding to the fan of top is Pn1, and the last actual temperature difference is Pn1_1, the reality of last time
The border temperature difference is Pn1_2, the change Dn1 of the current temperature difference=（Pn1- Pn1_1）, the change Dn1_1 of the last temperature difference=（Pn1_1-
Pn1_2）；The currently practical temperature difference corresponding to the fan of lower section is Pn2, and the last actual temperature difference is Pn2_1, the reality of last time
The temperature difference is Pn2_2, the change Dn2 of the current temperature difference=（Pn2- Pn2_1）, the change Dn2_1 of the last temperature difference=（Pn2_1-
Pn2_2）.
When performing PID arithmetic based on the temperature difference, proportional Py1, the integral term Iy1 of top fan and differential term Dy1 calculating
Formula is respectively：
Py1=Int（Kp1*Dn1）；Int represents to round, and Kp1 is the proportionality coefficient in pid algorithm corresponding to the fan of top；
Iy1=Int（Ki1*Pn1+Iyd1）, Iyd1=Iyd1_1+（（Ki1*Pn1）-Int（Ki1*Pn1））/10；Ki1 is top
Integral coefficient in pid algorithm corresponding to fan, can be fixed value, Iyd1 is the fractional part of integral term, and Iyd1_1 is upper one
The fractional part of integral term during secondary PID arithmetic；
Dy1=Int（Kd1*（Dn1-Dn1_1））；Kd1 is the differential coefficient in pid algorithm corresponding to the fan of top, can be to fix
Value.
When performing PID arithmetic based on the temperature difference, proportional Py2, the integral term Iy2 of lower section fan and differential term Dy2 calculating
Formula is respectively：
Py2=Int（Kp2*Dn2/2）；Int represents to round, and Kp2 is the proportionality coefficient in pid algorithm corresponding to the fan of lower section；
Iy2=Int（Ki2*Pn2/2+Iyd2）, Iyd2=Iyd2_1+（（Ki2*Pn2/2）-Int（Ki2*Pn2/2））/10；Ki2
Can be fixed value for the integral coefficient in pid algorithm corresponding to the fan of lower section, Iyd2 is the fractional part of integral term, Iyd2_1
For last PID arithmetic when integral term fractional part；
Dy2=Int（Kd2*（Dn2-Dn2_1）/2）；Kd2 is the differential coefficient in pid algorithm corresponding to the fan of lower section, can be solid
Definite value.
It was found from above-mentioned each formula, in pid algorithm, used by PID arithmetic corresponding to the maximum top fan of rotating speed
The change of the actual temperature difference and the actual temperature difference turns to actual calculated value, and used by PID arithmetic corresponding to the small lower section fan of rotating speed
The change of the actual temperature difference and the actual temperature difference is less than actual calculated value, have chosen the 1/2 of actual calculated value.So as to so that on
The rotation speed of the fan that square fan is obtained is even larger than the rotation speed of the fan that lower section fan is obtained, and further increases the big fan of rotating speed
Pid algorithm result proportion shared in overall result..
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than is limited；Although with reference to foregoing reality
Example is applied the present invention is described in detail, for the person of ordinary skill of the art, still can be to foregoing implementation
Technical scheme described in example is modified, or carries out equivalent substitution to which part technical characteristic；And these are changed or replaced
Change, the essence of appropriate technical solution is departed from the spirit and scope of claimed technical solution of the invention.
Claims (9)
1. a kind of method for controlling number of revolution of indoor apparatus of air conditioner, the indoor set has the air outlet of at least two upper and lower arrangements, often
The individual air outlet is correspondingly arranged on a fan, it is characterised in that the control method includes：
Obtain the operational mode of indoor set and determine the temperature difference of the rotating speed institute foundation of each fan, according to each fan
The temperature difference of rotating speed institute foundation perform PID arithmetic, obtain proportional, integral term and the differential of the PID arithmetic of each fan
；The proportional, integral term and differential term of the PID arithmetic of all fans are summed respectively, obtain toatl proportion item, total mark item and
Total differential term；
The relative size of the rotating speed of each fan is determined according to the operational mode, according to the relative of the rotating speed of the fan
Acquiring size determines the weights of the rotating speed institute foundation of each fan；The weights meet that the weights of all fan institutes foundation are total
With for 1, the big fan of rotating speed has the weights for being more than the small fan institute foundation of rotating speed；
By the weights of each fan institute foundation respectively with the toatl proportion item, the total mark item and total differential
Item is multiplied, and obtains actual ratio item, actual integration item and the actual differential term of the rotating speed institute foundation for determining each fan；
Determined according to the actual ratio item, actual integration item and actual differential term and control the rotating speed of each fan.
2. according to the method for claim 1, it is characterised in that the temperature of the rotating speed institute foundation for determining each fan
Difference is the return air temperature difference, one in the air outlet temperature difference, the inner coil pipe temperature difference；The return air that the return air temperature difference is sucked according to fan
The difference of return air temperature and target indoor temperature determines；Air-out of the air outlet temperature difference at the air outlet according to corresponding to fan
Temperature and the difference of target leaving air temp determine；The indoor heat exchange that the return air that the inner coil pipe temperature difference is sucked according to fan passes through
The coil temperature of device determines with the difference of target coil temperature.
3. according to the method for claim 1, it is characterised in that turning for each fan is determined according to the operational mode
The relative size of speed, is specifically included：
If the operational mode is refrigeration mode, the rotating speed of top fan is more than the rotating speed of lower section fan；
If the operational mode is heating mode, the rotating speed of lower section fan is less than the rotating speed of top fan.
4. according to the method for claim 3, it is characterised in that methods described also includes：
If the operational mode is refrigeration mode, control the air supply direction of the air outlet of the top upward；
If the operational mode is heating mode, control the air supply direction of the air outlet of bottom downward.
5. method according to any one of claim 1 to 4, it is characterised in that pid algorithm corresponding to each fan
Proportionality coefficient determines according to the temperature difference for the rotating speed institute foundation for determining the fan；In the PID arithmetic, there is by it is multiple according to
Multiple setting temperature ranges that the setting temperature difference of secondary increase is formed, the proportionality coefficient is in the different setting temperature ranges
With different values, and it is small in the temperature difference to meet that the proportionality coefficient in the big setting temperature range of the temperature difference is not less than
Setting temperature range in the proportionality coefficient.
6. according to the method for claim 5, it is characterised in that multiple setting temperature ranges, which comprise at least, has first to set
Determine temperature range, in the described first setting temperature range, the proportionality coefficient of the pid algorithm corresponding to the big fan of rotating speed is more than
The proportionality coefficient of pid algorithm corresponding to the small fan of rotating speed.
7. according to the method for claim 5, it is characterised in that multiple setting temperature ranges, which comprise at least, has second to set
Determine temperature range, in the described second setting temperature range, the proportionality coefficient and the temperature difference correlation.
8. according to the method for claim 5, it is characterised in that multiple setting temperature ranges, which comprise at least, has the 3rd to set
Determine temperature range, in the described 3rd setting temperature range, the proportionality coefficient of the pid algorithm corresponding to the big fan of rotating speed is with turning
The proportionality coefficient of pid algorithm corresponding to the small fan of speed is equal.
9. method according to any one of claim 1 to 4, it is characterised in that held described according to the actual temperature difference
During row PID arithmetic, PID arithmetic corresponding to the maximum fan of rotating speed uses the change of the constant actual temperature difference and the actual temperature difference of size
Computing is participated in, PID arithmetic corresponding to the fan of remaining rotating speed participates in fortune using the change of the actual temperature difference and the actual temperature difference that reduce
Calculate.
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