CN104764160B - The constant air capacity control of air conditioner room unit, device and air conditioner room unit - Google Patents
The constant air capacity control of air conditioner room unit, device and air conditioner room unit Download PDFInfo
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- CN104764160B CN104764160B CN201510149675.7A CN201510149675A CN104764160B CN 104764160 B CN104764160 B CN 104764160B CN 201510149675 A CN201510149675 A CN 201510149675A CN 104764160 B CN104764160 B CN 104764160B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/75—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity for maintaining constant air flow rate or air velocity
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Abstract
The invention discloses a kind of constant air capacity control of air conditioner room unit, including：The realtime power of the motor of air conditioner room unit is obtained under certain rotating speed；In view of the influence of the present input voltage to power of motor of air-conditioner, and need to be modified the realtime power of motor, so as to obtain new performance number；Under the motor speed corresponding to corrected output value in motor, the difference power between the corrected output value and predetermined power standard value of motor is calculated；Rotating speed of target required for motor reaches predetermined permanent wind amount is calculated according to difference power, and controlled motor is run with the rotating speed of target.The invention also discloses the permanent wind amount control device and a kind of air conditioner room unit of a kind of air conditioner room unit.The present invention can exactly detect windage size, realize the permanent Boiler pressure control of indoor apparatus of air conditioner, while do not influenceed by user's line voltage factor, hereby it is ensured that the refrigeration or heating effect of air-conditioner stabilization.
Description
Technical field
The present invention relates to air-conditioner field, more particularly to the constant air capacity control of indoor apparatus of air conditioner, device and have
The air conditioner room unit of the device.
Background technology
It is general that when being freezed using air-conditioner or being heated, what is needed most is the control constant to indoor set air output,
If air quantity it is too small or it is non-constant can all cause to freeze, heat and can not send out, and then cause the refrigeration of air-conditioner, heating effect
Difference.Current air conditioner room unit is all using constant speed control air quantity, although theoretically, it should be permanent that permanent rotating speed is corresponding
Air quantity, but in fact, air-conditioner can be influenceed by various factors and be caused that air output is non-constant in use.
Influenceing the factor of indoor set air quantity has a lot, including：(1) thickness of filter screen and permanent wind amount degree；(2) wind guide strip
Angle is too small to cause air-out to have some setbacks；(3) freeze, heat cause evaporator temperature change so as to cause windage to change.In consideration of it,
During studying air-conditioner perseverance Boiler pressure control, it is thus proposed that by the work(of the detection blower fan under permanent speed conditions
Rate, and with power of fan bench-marking when being not reaching to permanent wind amount, judge whether air-conditioner needs by the power conversion of blower fan
Speed considerations are carried out, to realize permanent Boiler pressure control.But, in air-conditioner practical work process, blower fan institute under same rotating speed
The power of consumption, except by filter screen, dirty stifled, wind-guiding angle is influenceed, freezed and heated etc. in addition to the windage that factor causes changes, also
Can be influenceed by air-conditioner supply voltage, therefore still cannot exactly be detected windage situation of change.
The above is only used for auxiliary and understands technical scheme, does not represent and recognizes that the above is existing skill
Art.
The content of the invention
It is a primary object of the present invention to provide a kind of constant air capacity control of indoor apparatus of air conditioner, device and air conditioner chamber
Interior machine, it is intended to which solving prior art can not accurately detect the size of air-conditioner windage, realizes the technical problem of permanent Boiler pressure control.
To achieve the above object, the invention provides a kind of constant air capacity control of air conditioner room unit, the air-conditioning
The constant air capacity control of air conditioner indoor machine includes：
Obtain the operational factor and power correction parameter of the motor of air conditioner room unit；
Operational factor according to the motor calculates the current power of the motor, and according to the power correction parameter and
The current power of the motor, the power to the motor is modified, and obtains corrected output；
Calculate the power of the corrected output predetermined power standard value corresponding with the current rotating speed of the motor of the motor
Difference；
According to the difference power, the rotating speed of target required for the motor reaches target permanent wind amount is calculated, and control described
Motor is run with the rotating speed of target.
Preferably, it is described according to the power correction parameter and the current power of the motor, to the power of the motor
It is modified, obtaining corrected output includes：
Obtain correction value corresponding with the power correction parameter；
Current power and the correction value according to the motor, calculate the corrected output of the motor.
Preferably, acquisition correction value corresponding with the power correction parameter includes：
According to default power correction function corresponding with the power correction parameter, calculate and the power correction parameter
Corresponding correction value.
Preferably, the control motor includes after being run with the rotating speed of target：
Judge the variable quantity of current working parameter of the air-conditioner whether more than default threshold value；
When the variable quantity of the current working parameter of the air-conditioner is more than default threshold value, reacquire in air conditioner chamber
The operational factor and power correction parameter of the motor of machine.
To achieve the above object, the present invention also provides a kind of permanent wind amount control device of air conditioner room unit, the air-conditioning
The permanent wind amount control device of air conditioner indoor machine includes：
Parameter acquisition module, operational factor and power correction parameter for obtaining the motor of air conditioner room unit；
Realtime power calculates module, for the operational factor according to the motor for obtaining, calculates the current of the motor
Power；
Corrected output obtains module, for the current power according to the power correction parameter and the motor, to described
The power of motor is modified, and obtains corrected output；
Difference power computing module, the corrected output for calculating the motor is corresponding pre- with the current rotating speed of the motor
If the difference power of power standard value；
Rotating speed of target control module, for according to the difference power, the calculating motor to be reached required for target permanent wind amount
Rotating speed of target；
Rotational speed control module, for according to the rotating speed of target for obtaining, controlling the motor to be transported with the rotating speed of target
OK.
Preferably, the corrected output obtains module and includes：
Correction value acquiring unit, for obtaining correction value corresponding with the power correction parameter；
Corrected output computing unit, for the current power according to the motor and the correction value, calculates the motor
Corrected output.
Preferably, the correction value acquiring unit is used for：
According to default power correction function corresponding with the power correction parameter, calculate and the power correction parameter
Corresponding correction value.
Preferably, the permanent wind amount control device of the air conditioner room unit also includes：
Judge module, for judging whether the variable quantity of current working parameter of the air-conditioner is more than default threshold value.
Preferably, the duty parameter of the air-conditioner includes：Input voltage, indoor environment temperature, indoor environment humidity, lead
At least one of wind angle, compressor operating frequency.
To achieve the above object, the present invention also provides a kind of air conditioner room unit, the indoor set include indoor heat exchanger,
The motor of wind wheel in indoor wind wheel and drive chamber, the indoor set also includes master control borad, and the master control borad includes any of the above-described institute
The permanent wind amount control device of the indoor apparatus of air conditioner stated.
The constant air capacity control of the air conditioner room unit that the present invention is provided, is considering existing influence permanent wind amount factor
On the basis of, influence of the line voltage factor to permanent wind amount is more considered, therefore can more precisely realize indoor set permanent wind
The control of amount.It is also possible in supply voltage, indoor environment temperature, indoor environment humidity, wind-guiding angle, compression
When the influence of the various factors such as unit frequency changes, detection judges windage again in time, and calculates indoor electromechanics machine again
Rotating speed, so as to ensure that the stability contorting of air conditioner room unit permanent wind amount, realizes the refrigeration of air-conditioner and the stabilization of heating effect.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the embodiment of air conditioner room unit constant air capacity control one of the present invention；
Fig. 2 is the schematic flow sheet of another embodiment of air conditioner room unit constant air capacity control of the present invention；
Fig. 3 is the high-level schematic functional block diagram of the embodiment of air conditioner room unit permanent wind amount control device one of the present invention；
Fig. 4 is the refinement functional module of corrected output acquisition module in air conditioner room unit permanent wind amount control device in Fig. 3
Schematic diagram；
Fig. 5 illustrates for the refinement functional module of parameter acquisition module in air conditioner room unit permanent wind amount control device in Fig. 3
Figure；
Fig. 6 is the high-level schematic functional block diagram of another embodiment of the permanent wind amount control device of air conditioner room unit of the present invention；
Fig. 7 is the high-level schematic functional block diagram of the embodiment of air conditioner room unit of the present invention.
The realization of the object of the invention, functional characteristics and advantage will be described further referring to the drawings in conjunction with the embodiments.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Reference picture 1, Fig. 1 is the schematic flow sheet of the embodiment of constant air capacity control one of air conditioner room unit of the present invention.
In the present embodiment, the air conditioner room unit constant air capacity control is comprised the following steps：
Step S10, obtains the operational factor and power correction parameter of the motor of air conditioner room unit；
In the present embodiment, the operational factor of the motor includes motor speed, electric moter voltage, current of electric.Power correction
Parameter refers to the parameter for correcting power of motor, such as supply voltage, wind-guiding angle, indoor environment temperature etc..Need explanation
, above-mentioned motor speed, electric moter voltage, current of electric, power correction parameter acquisition order in no particular order.
The power of inverter consumption is contained due to motor realtime power (current power), and voltage transformation inverter is consumed
Power conversion, power results will be caused to change.Specially：During refrigeration：Having condensed water causes evaporator windage to increase, work(
Rate becomes big.When heating：It is air-dried, windage is small.Therefore, when carrying out permanent wind value by the realtime power of motor and judging, must
Influence of the power input voltage of air-conditioner to permanent wind magnitude calculation must be considered.Therefore, in the present embodiment preferred air-conditioner it is defeated
Enter parameter of the voltage (namely supply voltage) as amendment power of motor.
In the present embodiment, for motor speed ωrAcquisition, specifically can be by the vector controlled skill based on rotor magnetic orientation
Art (Field-Oriented Control, FOC), according to the parameter of motor, according to permagnetic synchronous motor d axles and q shaft voltages
Equation, using counter electromotive force rotor position estimation method is extended, calculates the position θ and rotational speed omega of rotorr, and according to rotor-position
Output U, V, W three-phase voltage vector, operates such that it is able to controlled motor.
Used as a preferred embodiment, obtaining current of electric can specifically be realized by following approach：First by detecting electricity
Two-phase I in machine three-phase currentuAnd Iv；Then the Q shaft currents I of motor is calculated respectively by below equationqWith D shaft currents Id,
I.e.
Wherein, θ is the position of rotor.
Further, obtaining electric moter voltage can specifically be realized by following approach：According to the motor speed ω for obtainingrWith
The Q shaft currents I of the motor of acquisitionqWith D shaft currents Id, to obtain DC bus-bar voltage, and use ensorless control side
Formula, the Q shaft voltages U of motor is calculated by below equationqWith D shaft voltages Ud：
Uq=R*Iq+Lq*p*Iq+ωr*Ld*Id+e0；
Ud=R*Id+Ld*p*Id-ωr*Lq*Iq；
Wherein, R is electric motor resistance；LqIt is motor Q axle inductances；LdIt is motor D axle inductances；ωrIt is motor speed；P is differential
Operator；e0It is empty load of motor electromotive force.
Step S20, the operational factor according to the motor calculates the current power of the motor, and is repaiied according to the power
The current power of positive parameter and the motor, the power to the motor is modified, and obtains corrected output；
First, according to the operational factor of the motor obtained in above-mentioned steps S10, the realtime power of motor is calculated.Obtaining
After current of electric and electric moter voltage, then the realtime power of motor is calculated according to following rating formula：
PMOTOR=Uq*Iq+Ud*Id；
Wherein, IqIt is Q shaft currents, IdIt is D shaft currents, UqIt is Q shaft voltages, UdIt is D shaft voltages.
Secondly, according to power correction parameter and the current power of motor, the realtime power to motor is modified, is repaiied
Positive.
As a preferred embodiment, the corrected output of motor is obtained by following steps.
First, the current power input voltage of air-conditioner is obtained, is then calculated according to input voltage and is obtained the real-time work(of motor
Rate PMOTORCorrection value.
As another preferred embodiment, by following input voltage correction function, calculate and obtain motor realtime power PMOTOR
Correction value：
P(Uac)=a*Uac 2+b*Uac+c；
Wherein, UacIt is the input voltage of air-conditioner, and the UacSpan be preferably 130V-280V, the scope for sky
The supply voltage scope of device need of work is adjusted, super to go beyond the scope, whole air-conditioner will all be stopped；A, b, c are constant, defeated
Enter the model that voltage correction function is built for air conditioner actual test result.Preferably, variable U in input voltage correction functionac's
Number of times is higher, and the degree of fitting of input voltage correction function is also higher, namely calculates the correction value P (U for obtainingac) accuracy also will
It is higher.
Then further according to the realtime power P of motorMOTORCorrection value P (Uac), calculate the amendment for obtaining revised motor
Performance number P：
P=P (P, Uac)=PMOTOR+P(Uac)；
Wherein, PMOTORIt is the realtime power of motor, P (Uac) it is the correction value of motor realtime power.
In the present embodiment, because the input voltage of air-conditioner generates influence on indoor set air output, therefore, it is accurately to obtain
The windage under input voltage change is obtained, it is necessary to compensate the power attenuation produced because input voltage changes.Also will motor reality
When power correction value P (Uac) compensate to the realtime power P of motorMOTOR。
Step S30, calculates the corrected output predetermined power standard corresponding with the current rotating speed of the motor of the motor
The difference power of value；
Under the motor speed corresponding to corrected output value in the motor, calculate the corrected output value of the motor with it is pre-
If the difference power between power standard value；
In the present embodiment, the computational methods of difference power Δ P are：
Δ P=P-Pω0；
Wherein, P is the corrected output value of motor, motor speeds of the ω 0 corresponding to the corrected output value P of motor, Pω0For
Predetermined power standard value corresponding to rotational speed omega 0.
In the present embodiment, predetermined power standard value is a kind of theoretical value, and it can realize the permanent wind amount output under permanent rotating speed,
Therefore, using predetermined power standard value as the corrected output value calibration of motor benchmark, such that it is able to pass through to calculate the work(of the two
Rate difference is obtaining the motor speed required for permanent Boiler pressure control.
Step S40, according to the difference power, calculates the rotating speed of target required for the motor reaches target permanent wind amount, and
The motor is controlled to be run with the rotating speed of target.
Above-mentioned steps S40 includes：
Step S401, according to the difference power, calculates the rotating speed of target required for the motor reaches target permanent wind amount；
Step S402, controls the motor to be run with the rotating speed of target.
In the present embodiment, rotating speed of target F is calculatedspeedFormula it is as follows：
Fspeed=A* Δs P2+B*ΔP+C；
Wherein, Δ P is the difference power between the corrected output value and predetermined power standard value of motor, and A, B, C are constant, mesh
Mark the model that the computing formula of rotating speed is built for air conditioner actual test result.Preferably, variable in the computing formula of rotating speed of target
The number of times of Δ P is higher, and the degree of fitting that rotating speed of target calculates function is also higher, namely calculates the rotating speed of target F for obtainingspeedIt is accurate
Degree also will be higher.
On the premise of the various factors of influence permanent wind amount does not change relatively, namely in the case of windage determination, in advance
If power standard value correspondence one group of permanent wind amount and motor speed, motor corrected output value also corresponds to one group of permanent wind amount and motor turns
Speed, can be by the power difference Δ P of the two calculating the rotating speed of target F required for motor reaches predetermined permanent wind amountspeed, and control
Motor is with rotating speed of target FspeedOperation, so as to finally realize under the various factors of influence windage change, controls and keeps room
The permanent wind amount of interior machine, so as to realize more preferably refrigeration and heating effect.
In the present embodiment, it is contemplated that air-conditioner input voltage for windage influence, so as to have influence on to indoor set permanent wind
The control of amount, therefore, after being modified with the realtime power to current air-conditioner by input voltage correction function, and compensate reality
When power to obtain corrected output value, meanwhile, to obtain predetermined permanent wind amount, it is necessary to be calibrated to corrected output value, so that most
The rotating speed of target of the motor operation for reaching predetermined permanent wind amount is obtained eventually, is run by the rotating speed of target by controlled motor and is capable of achieving
The control of permanent wind amount.In the present embodiment, by the control to motor permanent wind amount, realize the more excellent refrigeration of air-conditioner and heat effect
Really, simultaneously as the permanent Boiler pressure control of motor, air-conditioner more energy-conservation under same effect is also caused.
Further, reference picture 2, Fig. 2 is another embodiment of air conditioner room unit constant air capacity control of the present invention.
In the present embodiment, include after the step S402：
Whether step S50, judge the variable quantity of current working parameter of the air-conditioner more than default threshold value；When described
When the variable quantity of the current working parameter of air-conditioner is more than default threshold value, the operation of the motor of air conditioner room unit is reacquired
Parameter and power correction parameter.
In the present embodiment, when motor is run to realize permanent Boiler pressure control according to rotating speed of target, if operating mode now occurs
Change (namely windage changes) will influence whether the control to permanent wind amount, therefore, to ensure can be protected under any operating mode
The control to permanent wind amount is held, when the corresponding various parameters of work condition environment change, it is necessary to reacquire air conditioner room unit
Motor operational factor, calculate the realtime power of motor, and the last predetermined permanent wind amount of holding obtained again under current working
Motor rotating speed of target.
Preferably, judge that the influence factor (namely duty parameter) that windage changes includes the input voltage of air-conditioner
At least one of (namely supply voltage), indoor environment temperature, indoor environment humidity, wind-guiding angle, compressor operating frequency.
When above-mentioned influence factor changes and variable quantity exceedes default threshold value, the fortune of the motor of air conditioner room unit is reacquired
Line parameter and power correction parameter, namely re-execute step S10-S40.
Preferably, when mains voltage variations are more than 10V, step S10-S40 is re-executed；
Preferably, when the angle change of upper and lower wind-guiding and/or left and right wind-guiding is more than 3 degree, step S10- is re-executed
S40；
Preferably, when compressor operating frequency change is more than 5Hz, step S10-S40 is re-executed；
Preferably, when indoor environment temperature change is more than 5 DEG C, step S10-S40 is re-executed；
Preferably, when the change of indoor environment humidity is more than 10%RH, step S10-S40 is re-executed.
Above-mentioned each duty parameter is the preferred value of the present embodiment, due in air-conditioner running can be subject to it is various because
The influence of element, namely slight fluctuating change is had, it is therefore preferred that when the variable quantity of each duty parameter exceedes default threshold
During value scope, such as, when mains voltage variations exceed (10 ± 0.5) V, re-execute step S10-S40.
The constant air capacity control of the air conditioner room unit that the present embodiment is provided, it is contemplated that line voltage influence permanent wind amount is sentenced
Disconnected factor, therefore can exactly realize the control of permanent wind amount.In supply voltage, wind-guiding angle, air humidity, Air Temperature
When the influence of the factors such as degree, compressor operating frequency changes, detection judges windage again in time, recalculates and keeps permanent wind amount
Motor rotating speed of target, so as to ensure that the refrigeration and heating effect of air-conditioner.
Further, reference picture 3, Fig. 3 is the work(of the embodiment of permanent wind amount control device one of air conditioner room unit of the present invention
Can module diagram.In the present embodiment, the permanent wind amount control device of the air conditioner room unit includes：
Parameter acquisition module 110, operational factor and power correction parameter for obtaining the motor of air conditioner room unit；
In the present embodiment, as shown in figure 4, parameter acquisition module 110 includes：
Motor speed acquiring unit 1101, the rotating speed for obtaining motor；
Electric current acquiring unit 1102, the electric current for obtaining motor；
Voltage acquisition unit 1103, the voltage for obtaining motor；
Power correction parameter acquiring unit 1104, the corrected parameter value for obtaining power of motor.
Above-mentioned motor speed acquiring unit 1101, electric current acquiring unit 1102, voltage acquisition unit 1103 and power are repaiied
The job order of positive parameter acquiring unit 1104 is not limited, it is also possible to while carrying out.
The power of inverter consumption is contained due to motor realtime power (current power), and voltage transformation inverter is consumed
Power conversion, power results will be caused to change.Specially：During refrigeration：Having condensed water causes evaporator windage to increase, work(
Rate becomes big.When heating：It is air-dried, windage is small.Therefore, when carrying out permanent wind value by the realtime power of motor and judging, must
Influence of the power input voltage of air-conditioner to permanent wind magnitude calculation must be considered.Therefore, in the present embodiment preferred air-conditioner it is defeated
Enter parameter of the voltage (namely supply voltage) as amendment power of motor.
In the present embodiment, for motor speed ωrAcquisition, motor speed acquiring unit 1101 can be by based on rotor magnetic
The vector control technology (Field-Oriented Control, FOC) of orientation, according to the parameter of motor, according to permanent-magnet synchronous
Motor d axles and q shaft voltage equations, using counter electromotive force rotor position estimation method is extended, calculate the position θ and rotating speed of rotor
ωr, and U, V, W three-phase voltage vector are exported according to rotor-position, operated such that it is able to controlled motor.
Used as a preferred embodiment, obtaining current of electric by electric current acquiring unit 1102 specifically can be by following approach
Realize：First by detecting the two-phase I in motor three-phase currentuAnd Iv；Then the Q of motor is calculated respectively by below equation
Shaft current IqWith D shaft currents Id, i.e.,
Wherein, θ is the position of rotor.
Further, obtaining electric moter voltage by voltage acquisition unit 1103 can specifically be realized by following approach：Root
According to the motor speed ω for obtainingrWith the Q shaft currents I of the motor for obtainingqWith D shaft currents Id, to obtain DC bus-bar voltage, and adopt
Ensorless control mode is used, the Q shaft voltages U of motor is calculated by below equationqWith D shaft voltages Ud：
Uq=R*Iq+Lq*p*Iq+ωr*Ld*Id+e0；
Ud=R*Id+Ld*p*Id-ωr*Lq*Iq；
Wherein, R is electric motor resistance；LqIt is motor Q axle inductances；LdIt is motor D axle inductances；ωrIt is motor speed；P is differential
Operator；e0It is empty load of motor electromotive force.
Realtime power calculates module 120, for the operational factor according to the motor for obtaining, calculates working as the motor
Preceding power；
Calculate the realtime power of motor.It is after current of electric and electric moter voltage is obtained, then public according to following power calculation
Formula calculates the realtime power of motor：
PMOTOR=Uq*Iq+Ud*Id；
Wherein, IqIt is Q shaft currents, IdIt is D shaft currents, UqIt is Q shaft voltages, UdIt is D shaft voltages.
Secondly, according to power correction parameter and the current power of motor, the realtime power to motor is modified, is repaiied
Positive.
Corrected output obtains module 130, for the current power according to the power correction parameter and the motor, to institute
The power for stating motor is modified, and obtains corrected output；
Preferably, reference picture 5, corrected output obtains module 130 to be included：
Correction value acquiring unit 1301, for obtaining correction value corresponding with the power correction parameter；
The current power input voltage of air-conditioner is obtained first, is then calculated according to input voltage and is obtained motor realtime power
PMOTORCorrection value.
Used as another preferred embodiment, correction value acquiring unit 1301 is preferably by following input voltage correction function, meter
Calculate and obtain motor realtime power PMOTORCorrection value：
P(Uac)=a*Uac 2+b*Uac+c；
Wherein, UacIt is the input voltage of air-conditioner, and the UacSpan be preferably 130V-280V, the scope for sky
The supply voltage scope of device need of work is adjusted, super to go beyond the scope, whole air-conditioner will all be stopped；A, b, c are constant, defeated
Enter the model that voltage correction function is built for air conditioner actual test result.Preferably, variable U in input voltage correction functionac's
Number of times is higher, and the degree of fitting of input voltage correction function is also higher, namely calculates the correction value P (U for obtainingac) accuracy also will
It is higher.
Corrected output computing unit 1302, for the current power according to the motor and the correction value, calculates described
The corrected output of motor.
Realtime power P according to motorMOTORCorrection value P (Uac), calculate the corrected output value for obtaining revised motor
The computing formula of P is as follows：
P=P (P, Uac)=PMOTOR+P(Uac)；
Wherein, PMOTORIt is the realtime power of motor, P (Uac) it is the correction value of motor realtime power.
In the present embodiment, because the input voltage of air-conditioner generates influence on indoor set air output, therefore, it is accurately to obtain
The windage under input voltage change is obtained, it is necessary to compensate the power attenuation produced because input voltage changes.Also will motor reality
When power correction value P (Uac) compensate to the realtime power P of motorMOTOR。
Difference power computing module 140, the corrected output for calculating the motor is corresponding with the current rotating speed of the motor
Predetermined power standard value difference power；
Under the motor speed corresponding to corrected output value in the motor, calculate the corrected output value of the motor with it is pre-
If the difference power between power standard value；
In the present embodiment, the computational methods of difference power Δ P are：
Δ P=P-Pω0；
Wherein, P is the corrected output value of motor, motor speeds of the ω 0 corresponding to the corrected output value P of motor, Pω0For
Predetermined power standard value corresponding to rotational speed omega 0.
In the present embodiment, predetermined power standard value is a kind of theoretical value, and it can realize the permanent wind amount output under permanent rotating speed,
Therefore, using predetermined power standard value as the corrected output value calibration of motor benchmark, such that it is able to pass through to calculate the work(of the two
Rate difference is obtaining the motor speed required for permanent Boiler pressure control.
Rotating speed of target computing module 150, for according to the difference power, the calculating motor to be reached needed for target permanent wind amount
The rotating speed of target wanted；In the present embodiment, rotating speed of target F is calculatedspeedFormula it is as follows：
Fspeed=A* Δs P2+B*ΔP+C；
Wherein, Δ P is the difference power between the corrected output value and predetermined power standard value of motor, and A, B, C are constant, mesh
Mark the model that the computing formula of rotating speed is built for air conditioner actual test result.Preferably, variable in the computing formula of rotating speed of target
The number of times of Δ P is higher, and the degree of fitting that rotating speed of target calculates function is also higher, namely calculates the rotating speed of target F for obtainingspeedIt is accurate
Degree also will be higher.
On the premise of the various factors of influence permanent wind amount does not change relatively, namely in the case of windage determination, in advance
If power standard value correspondence one group of permanent wind amount and motor speed, motor corrected output value also corresponds to one group of permanent wind amount and motor turns
Speed, can be by the power difference Δ P of the two calculating the rotating speed of target F required for motor reaches predetermined permanent wind amountspeed, and control
Motor is with rotating speed of target FspeedOperation, so as to finally realize under the various factors of influence windage change, controls and keeps room
The permanent wind amount of interior machine, so as to realize more preferably refrigeration and heating effect.
Rotational speed control module 160, for according to the rotating speed of target for obtaining, controlling the motor with the rotating speed of target
Operation.
In the present embodiment, it is contemplated that air-conditioner input voltage for windage influence, so as to have influence on to indoor set permanent wind
The control of amount, therefore, after being modified with the realtime power to current air-conditioner by input voltage correction function, and compensate reality
When power to obtain corrected output value, meanwhile, to obtain predetermined permanent wind amount, it is necessary to be calibrated to corrected output value, so that most
The rotating speed of target of the motor operation for reaching predetermined permanent wind amount is obtained eventually, is run by the rotating speed of target by controlled motor and is capable of achieving
The control of permanent wind amount.In the present embodiment, by the control to motor permanent wind amount, realize the more excellent refrigeration of air-conditioner and heat effect
Really, simultaneously as the permanent Boiler pressure control of motor, air-conditioner more energy-conservation under same effect is also caused.
Further, reference picture 6, Fig. 6 is another embodiment of the permanent wind amount control device of air conditioner room unit of the present invention.
In the present embodiment, the permanent wind amount control device of the air conditioner room unit also includes：
Judge module 170, for judging whether the variable quantity of current working parameter of air-conditioner is more than default threshold value.
In the present embodiment, when motor is run to realize permanent Boiler pressure control according to rotating speed of target, if operating mode now occurs
Change (namely windage changes) will influence whether the control to permanent wind amount, therefore, to ensure can be protected under any operating mode
The control to permanent wind amount is held, when the corresponding various parameters of work condition environment change, it is necessary to reacquire air conditioner room unit
Motor operational factor, calculate the realtime power of motor, and the last predetermined permanent wind amount of holding obtained again under current working
Motor rotating speed of target.
Preferably, judge that the influence factor (namely duty parameter) that windage changes includes the input voltage of air-conditioner
At least one of (namely supply voltage), indoor environment temperature, indoor environment humidity, wind-guiding angle, compressor operating frequency.
When above-mentioned influence factor changes and variable quantity exceedes default threshold value, the fortune of the motor of air conditioner room unit is reacquired
Line parameter and power correction parameter.
Preferably, the predetermined threshold value of mains voltage variations is 10V；
Preferably, the predetermined threshold value of the angle change of upper and lower wind-guiding and/or left and right wind-guiding is 3 degree；
Preferably, the predetermined threshold value of compressor operating frequency change is 5Hz；
Preferably, the predetermined threshold value of indoor environment temperature change is 5 DEG C；
Preferably, the predetermined threshold value of indoor environment moisturt register change is 10%RH.
Above-mentioned each duty parameter is the preferred value of the present embodiment, due in air-conditioner running can be subject to it is various because
The influence of element, namely slight fluctuating change is had, it is therefore preferred that when the variable quantity of each duty parameter exceedes default threshold
During value scope, such as, when mains voltage variations exceed (10 ± 0.5) V, reacquire the operation of the motor of air conditioner room unit
Parameter, calculates the realtime power of motor, and the motor target of the last predetermined permanent wind amount of holding obtained again under current working turns
Speed.
The constant air capacity control of the air conditioner room unit that the present embodiment is provided, it is contemplated that line voltage influence permanent wind amount is sentenced
Disconnected factor, therefore can exactly realize the control of permanent wind amount.In supply voltage, wind-guiding angle, air humidity, Air Temperature
When the influence of the factors such as degree, compressor operating frequency changes, detection judges windage again in time, recalculates and keeps permanent wind amount
Motor rotating speed of target, so as to ensure that the refrigeration and heating effect of air-conditioner.
Further, reference picture 7, Fig. 7 is the high-level schematic functional block diagram of the embodiment of air conditioner room unit of the present invention.At this
In embodiment, the motor 230 that the air conditioner room unit includes indoor heat exchanger 210, indoor fan 220, drives indoor fan 220
And master control borad 240, the master control borad 240 includes any of the above-described described permanent wind amount control device 250.
In the present embodiment, master control borad 240 reaches the target of predetermined permanent wind amount by permanent wind amount control device 250 to obtain
Rotating speed, and run with the rotating speed of target controlled motor 230；When motor 230 is run with above-mentioned rotating speed of target, i.e., motor 230 with
When the rotating speed of target drives indoor fan 220 to rotate, indoor fan 220 will produce predetermined permanent wind amount, so as to by indoor heat exchanger
210 temperature constant output, so as to ensure that indoor refrigeration or heating effect.Simultaneously because air-conditioner uses permanent wind amount control
System, accordingly, with respect to non-permanent wind amount for, also more energy-conservation to a certain extent.
The preferred embodiments of the present invention are these are only, the scope of the claims of the invention is not thereby limited, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of constant air capacity control of air conditioner room unit, it is characterised in that the permanent wind amount control of the air conditioner room unit
Method processed includes：
Obtain the operational factor and power correction parameter of the motor of air conditioner room unit；
Operational factor according to the motor calculates the current power of the motor, and according to the power correction parameter and described
The current power of motor, the power to the motor is modified, and obtains corrected output；
Calculate the difference power of the corrected output predetermined power standard value corresponding with the current rotating speed of the motor of the motor；
According to the difference power, the rotating speed of target required for the motor reaches target permanent wind amount is calculated, and control the motor
Run with the rotating speed of target.
2. the constant air capacity control of air conditioner room unit as claimed in claim 1, it is characterised in that described according to the work(
The current power of rate corrected parameter and the motor, the power to the motor is modified, and obtaining corrected output includes：
Obtain correction value corresponding with the power correction parameter；
Current power and the correction value according to the motor, calculate the corrected output of the motor.
3. the constant air capacity control of air conditioner room unit as claimed in claim 2, it is characterised in that the acquisition with it is described
The corresponding correction value of power correction parameter includes：
According to default power correction function corresponding with the power correction parameter, calculate corresponding with the power correction parameter
Correction value.
4. the constant air capacity control of the air conditioner room unit as described in any in claim 1-3, it is characterised in that the control
Making after the motor is run with the rotating speed of target includes：
Judge the variable quantity of current working parameter of the air-conditioner whether more than default threshold value；
When the variable quantity of the current working parameter of the air-conditioner is more than default threshold value, air conditioner room unit is reacquired
The operational factor and power correction parameter of motor.
5. a kind of permanent wind amount control device of air conditioner room unit, it is characterised in that the permanent wind amount control of the air conditioner room unit
Device processed includes：
Parameter acquisition module, operational factor and power correction parameter for obtaining the motor of air conditioner room unit；
Realtime power calculates module, for the operational factor according to the motor for obtaining, calculates the current power of the motor；
Corrected output obtains module, for the current power according to the power correction parameter and the motor, to the motor
Power be modified, obtain corrected output；
Difference power computing module, the corrected output default work(corresponding with the current rotating speed of the motor for calculating the motor
The difference power of rate standard value；
Rotating speed of target computing module, for according to the difference power, calculating the mesh required for the motor reaches target permanent wind amount
Mark rotating speed；
Rotational speed control module, for according to the rotating speed of target for obtaining, controlling the motor to be run with the rotating speed of target.
6. the permanent wind amount control device of air conditioner room unit as claimed in claim 5, it is characterised in that the corrected output is obtained
Obtaining module includes：
Correction value acquiring unit, for obtaining correction value corresponding with the power correction parameter；
Corrected output computing unit, for the current power according to the motor and the correction value, calculates repairing for the motor
Positive.
7. the permanent wind amount control device of air conditioner room unit as claimed in claim 6, it is characterised in that the correction value is obtained
Unit is used for：
According to default power correction function corresponding with the power correction parameter, calculate corresponding with the power correction parameter
Correction value.
8. the permanent wind amount control device of the air conditioner room unit as described in any in claim 5-7, it is characterised in that the sky
Adjusting the permanent wind amount control device of air conditioner indoor machine also includes：
Judge module, for judging whether the variable quantity of current working parameter of the air-conditioner is more than default threshold value.
9. the permanent wind amount control device of air conditioner room unit as claimed in claim 8, it is characterised in that the work of the air-conditioner
Condition parameter includes：In input voltage, indoor environment temperature, indoor environment humidity, wind-guiding angle, compressor operating frequency at least
One.
10. a kind of air conditioner room unit, the indoor set includes indoor heat exchanger, indoor fan and drives the electricity of indoor fan
Machine, it is characterised in that the indoor set also includes master control borad, the master control borad includes any described sky in claim 5-9
Adjust the permanent wind amount control device of air conditioner indoor machine.
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| CN201510149675.7A CN104764160B (en) | 2015-03-30 | 2015-03-30 | The constant air capacity control of air conditioner room unit, device and air conditioner room unit |
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| CN201510149675.7A CN104764160B (en) | 2015-03-30 | 2015-03-30 | The constant air capacity control of air conditioner room unit, device and air conditioner room unit |
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| CN106152392B (en) * | 2015-04-27 | 2019-04-19 | 广东美的制冷设备有限公司 | Constant air capacity control, device and the air conditioner room unit of air conditioner room unit |
| CN104978493A (en) * | 2015-07-13 | 2015-10-14 | 广东美的制冷设备有限公司 | Power estimation method and device for PTC (positive temperature coefficient) electric heater in air-conditioning system |
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| CN113310198A (en) * | 2020-02-26 | 2021-08-27 | 广东美的制冷设备有限公司 | Air conditioner, control method of air conditioner, and computer-readable storage medium |
| CN112484252A (en) * | 2020-11-18 | 2021-03-12 | 江苏科技大学 | Mute control method and system of air conditioner |
| CN112901547B (en) * | 2021-03-16 | 2023-01-20 | 合肥美的暖通设备有限公司 | Fan control method and device and fan equipment |
| CN113108443A (en) * | 2021-04-26 | 2021-07-13 | 广东积微科技有限公司 | Control method for constant air volume of air duct machine and air conditioner |
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