CN105371415A - Air conditioner outdoor unit and filth blockage control method thereof - Google Patents
Air conditioner outdoor unit and filth blockage control method thereof Download PDFInfo
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- CN105371415A CN105371415A CN201410414791.2A CN201410414791A CN105371415A CN 105371415 A CN105371415 A CN 105371415A CN 201410414791 A CN201410414791 A CN 201410414791A CN 105371415 A CN105371415 A CN 105371415A
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Abstract
The invention discloses a filth blockage control method for an air conditioner outdoor unit. The filth blockage control method includes the steps that real-time power of a motor is obtained, the influences caused by the input voltage and the humidity of an air conditioner and the frequency of a compressor on the power of the motor are considered, and the real-time power of the motor is corrected to obtain a new filth blockage value; then the new filth blockage value is compared with a preset standard filth blockage value corresponding to the rotation speed the same as that of the motor, and whether the air conditioner meets the filth blockage condition or not is judged; and when the air conditioner meets the filth blockage condition, the air conditioner is controlled to conduct filth blockage treatment. The invention further discloses the air conditioner outdoor unit. As the factors such as the voltage of a power grid, the humidity of the environment and the frequency of the compressor which influence filth blockage judgment are considered, the filth blockage condition and the proper dust removal requirement of an outdoor heat exchanger can be accurately detected without being affected by the factors such as the voltage of the power grid of users, the humidity of air and the frequency of the compressor, the refrigerating effect and the heating effect of the air conditioner are guaranteed, and the health and the comfort of the users are further improved.
Description
Technical field
The present invention relates to air-conditioner field, particularly relate to air-conditioner outdoor unit and dirty blocking control method thereof.
Background technology
Air conditioner room units all at present is all provided with screen pack, dust is all deposited on screen pack after filtering, need user's periodic cleaning, otherwise easily breed bacteria causes secondary pollution, and dust affects air output and the air supplying distance of indoor set, thus affect refrigeration and the heating effect of air-conditioner.And air-conditioner outdoor unit is placed on open air, heat exchanger also easily collects dust, and the dust on heat exchanger also can affect the air output of indoor set, thus affects refrigeration and the heating effect of air-conditioner.
Given this, in the process that stifled control dirty to air-conditioner is studied, someone proposes the power by detecting indoor or outdoors breeze fan, and with not dirty stifled time power reference contrast, judge whether air-conditioner dirty blocking up occurs by the power conversion of blower fan.But, in air-conditioner practical work process, the power that blower fan consumes under same rotating speed, except by dirty stifled affect except, also can be subject to the impact of other parameters of air-conditioner, therefore still cannot detect dirty stifled situation exactly.
Foregoing, only for auxiliary understanding technical scheme of the present invention, does not represent and admits that foregoing is prior art.
Summary of the invention
Main purpose of the present invention is to solve the technical problem that prior art accurately can not detect the dirty stifled situation of filter screen of air conditioner and/or heat exchanger.
For achieving the above object, the invention provides a kind of dirty blocking control method of air-conditioner outdoor unit, comprise the following steps:
The operational factor of step S11, acquisition motor, described operational factor comprises motor speed, electric moter voltage, current of electric;
Step S12, according to described electric moter voltage and current of electric, calculate and obtain the realtime power of motor;
Step S13, obtain current ambient humidity and the frequency of compressor, and according to the humidity-frequency correction function preset, obtain the first dirty stifled correction value corresponding with the frequency of described ambient humidity and compressor;
Step S14, obtain current air-conditioner input voltage, and according to the input voltage correction function preset, obtain the second dirty stifled correction value corresponding with described input voltage;
Step S15, according to described first dirty stifled correction value and the second dirty stifled correction value, described realtime power to be compensated, obtain new dirty stifled value;
Step S16, default dirty stifled standard value corresponding for rotating speed identical with described motor speed for described dirty stifled value newly to be compared, judge whether air-conditioner reaches dirty stifled condition;
Step S17, when air-conditioner reaches dirty stifled condition, control air-conditioner carry out dirty stifled process.
Preferably, described when air-conditioner reaches dirty stifled condition, control air-conditioner carries out dirty stifled process and comprises:
When air-conditioner reaches dirty stifled condition, control motor in the rear rotating of air-conditioner shutdown with dedusting.
Preferably, described default dirty stifled standard value corresponding for rotating speed identical with described motor speed for new dirty stifled value to be compared, judges whether air-conditioner reaches dirty stifled condition and comprise:
Calculate the ratio of default dirty stifled standard value corresponding to the new dirty stifled value rotating speed identical with described motor speed;
For the wind wheel type that windage and power are proportionate, when described ratio is greater than first predetermined threshold value, then judge that air-conditioner reaches dirty stifled condition; When described ratio is less than or equal to described first predetermined threshold value, then judge that air-conditioner does not reach dirty stifled condition;
For the wind wheel type that windage and power are negative correlation, when described ratio is less than second predetermined threshold value, then judge that air-conditioner reaches dirty stifled condition; When described ratio is more than or equal to described second predetermined threshold value, then judge that air-conditioner does not reach dirty stifled condition.
Preferably, described first predetermined threshold value is (100+X) %, and described second predetermined threshold value is (100-X) %, and wherein the span of X is 2-30.
Preferably, described control motor also comprises after the rear rotating of air-conditioner shutdown is with the step of dedusting:
Perform step S11-step S15 successively, obtain new dirty stifled value;
For the wind wheel type that windage and power are proportionate, when the ratio of the default dirty stifled standard value that the rotating speed identical with described motor speed when described dirty stifled value is newly corresponding is greater than the 3rd predetermined threshold value, terminate dedusting;
For the wind wheel type that windage and power are proportionate, when the ratio of the default dirty stifled standard value that the rotating speed identical with described motor speed when described dirty stifled value is newly corresponding is less than the 4th predetermined threshold value, terminate dedusting.
Preferably, described 3rd predetermined threshold value is (100+X/2) %, and described 4th predetermined threshold value is (100-X/2) %, and wherein the span of X is 2-30.
In addition, for achieving the above object, present invention also offers a kind of air-conditioner outdoor unit, the outdoor motor of compressor, heat exchanger, outdoor fan, electric-controlled plate and driving outdoor fan is provided with in described off-premises station, described electric-controlled plate is provided with and controls the dirty stifled control device of off-premises station, and this control device comprises:
Motor information acquisition unit, for obtaining the operational factor of motor, described operational factor comprises motor speed, electric moter voltage, current of electric;
Realtime power computing unit, for according to described electric moter voltage and current of electric, calculates the realtime power obtaining motor;
First dirty stifled amending unit, for obtaining current ambient humidity and the frequency of compressor, and according to the humidity-frequency correction function preset, obtains the first dirty stifled correction value corresponding with the frequency of described ambient humidity and compressor;
Second dirty stifled amending unit, for obtaining current air-conditioner input voltage, and according to the input voltage correction function preset, obtains the second dirty stifled correction value corresponding with described input voltage;
Dirty stifled value computing unit, for compensating described realtime power according to described first dirty stifled correction value and the second dirty stifled correction value, obtains new dirty stifled value;
Dirty stifled judging unit, for default dirty stifled standard value corresponding for rotating speed identical with described motor speed for described dirty stifled value newly being compared, judges whether air-conditioner reaches dirty stifled condition;
Dirty stifled processing unit, for when air-conditioner reaches dirty stifled condition, controls air-conditioner and carries out dirty stifled process.
Preferably, described dirty stifled processing unit is used for: when air-conditioner reaches dirty stifled condition, controls motor in the rear rotating of air-conditioner shutdown with dedusting.
Preferably, described dirty stifled judging unit is used for:
Calculate the ratio of default dirty stifled standard value corresponding to the new dirty stifled value rotating speed identical with described motor speed;
For the wind wheel type that windage and power are proportionate, when the dirty stifled windage of filter screen increases, power increases, and as axial-flow windwheel, when described ratio is greater than first predetermined threshold value, then judges that air-conditioner reaches dirty stifled condition; When described ratio is less than or equal to described first predetermined threshold value, then judge that air-conditioner does not reach dirty stifled condition;
For the wind wheel type that windage and power are negative correlation, power reduction when the dirty stifled windage of filter screen increases, as tubular wine wheel, when described ratio is less than second predetermined threshold value, then judges that air-conditioner reaches dirty stifled condition; When described ratio is more than or equal to described second predetermined threshold value, then judge that air-conditioner does not reach dirty stifled condition.
Preferably, described dirty stifled processing unit also for:
For the wind wheel type that windage and power are proportionate, when the ratio of the default dirty stifled standard value that the rotating speed identical with described motor speed when described dirty stifled value is newly corresponding is greater than the 3rd predetermined threshold value, terminate dedusting;
For the wind wheel type that windage and power are proportionate, when the ratio of the default dirty stifled standard value that the rotating speed identical with described motor speed when described dirty stifled value is newly corresponding is less than the 4th predetermined threshold value, terminate dedusting.
Preferably, described first predetermined threshold value is (100+X) %, and described second predetermined threshold value is (100-X) %, and wherein the span of X is 2-30; Described 3rd predetermined threshold value is (100+X/2) %, and described 4th predetermined threshold value is (100-X/2) %, and wherein the span of X is 2-30.
The dirty blocking control method of the air-conditioner outdoor unit that the embodiment of the present invention provides, consider the factor of the dirty stifled judgements of impact such as line voltage, ambient humidity and compressor frequency, therefore can the dirty stifled situation of sensing chamber's external heat exchanger and the demand of in good time dedusting exactly, also not by the impact of the factors such as user's line voltage, air humidity, compressor frequency, ensure that refrigeration and the heating effect of air-conditioner, improve user health degree and comfortableness further.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the dirty blocking control method of air conditioner room unit of the present invention;
Default dirty stifled standard value corresponding for rotating speed identical with described motor speed for described dirty stifled value newly compares in Fig. 1 by Fig. 2, judges whether air-conditioner reaches the refinement schematic flow sheet of the step of dirty stifled condition;
Fig. 3 is the structural framing schematic diagram of air conditioner room unit of the present invention;
Fig. 4 is the high-level schematic functional block diagram of control device in Fig. 3.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 1, dirty blocking control method first embodiment of a kind of air-conditioner outdoor unit of the present invention is proposed.The dirty blocking control method of air-conditioner outdoor unit described in this embodiment comprises the following steps:
The operational factor of step S11, acquisition motor, described operational factor comprises motor speed, electric moter voltage, current of electric;
In no particular order, in the present embodiment, for convenience of explanation, that first exemplify is motor speed ω to the acquisition order of above-mentioned motor speed, electric moter voltage and current of electric
racquisition.In the present embodiment, especially by the vector control technology (Field-OrientedControl based on rotor magnetic orientation, FOC), according to the parameter of motor, according to permagnetic synchronous motor d axle and q shaft voltage equation, utilize expansion counter electromotive force rotor position estimation method, calculate position θ and the rotational speed omega of rotor
r, and export U, V, W three-phase voltage vector according to rotor-position, control motor rotation.
As a preferred embodiment, the current detecting being obtained the step S20 of current of electric by current detecting unit specifically can be realized by following approach: first detect the two-phase I in motor three-phase current by current detecting unit
uand I
v; Then the Q shaft current I of motor is calculated respectively by following formula
qwith D shaft current I
d, namely
Wherein, θ is motor position.
Further, the voltage detecting being obtained the step S20 of electric moter voltage by voltage detection unit is specially: the motor speed ω obtained according to step S10
rwith the Q shaft current I of the motor that step S20 obtains
qwith D shaft current I
d, obtain DC bus-bar voltage by voltage detection unit, and adopt ensorless control mode, gone out the Q shaft voltage V of motor by following formulae discovery
qwith D shaft voltage V
d:
U
q＝R*I
q+L
q*p*I
q+ω
r*L
d*I
d+e
0
U
d＝R*I
d+L
d*p*I
d-ω
r*L
q*I
q
Wherein, R is electric motor resistance; L
qfor motor Q axle inductance; L
dfor motor D axle inductance; ω
rfor motor speed; P is differential operator; e
0for empty load of motor electromotive force.
Step S12, according to described electric moter voltage and current of electric, calculate and obtain the realtime power of motor;
After the current of electric obtained in step S11 and electric moter voltage, then calculate the realtime power of motor according to following rating formula:
P＝U
q*I
q+U
d*I
d
Wherein, I
qfor Q shaft current, I
dfor D shaft current, V
qfor Q shaft voltage, V
dfor D shaft voltage.
Step S13, obtain current ambient humidity and the frequency of compressor, and according to the humidity-frequency correction function preset, obtain the first dirty stifled correction value corresponding with the frequency of described ambient humidity and compressor;
This current ambient humidity can carry out detection according to the humidity sensor at machine air intake vent place disposed in the interior and obtain.The frequency of this compressor then can obtain according to the controling parameters in the electric-controlled plate of off-premises station.Then by following humidity-frequency correction function, the dirty stifled correction value of acquisition first is calculated:
F2(Hum，Fr)＝K1*Hum*Fr+K2*Hum+K3*Fr。
Wherein, Hum is air humidity, and the span of this Hum is 0-100RH; Fr is compressor operating frequency, and the span of this Fr is 0-150Hz.K1, K2, K3 are constant, and when heating, and K1 is-0.0008, K2 be 0.03, K3 is-0.05; When heating, K1 is 0.0012, K2 be 0.03, K3 is 0.06.
Step S14, obtain current air-conditioner input voltage, and according to the input voltage correction function preset, obtain the second dirty stifled correction value corresponding with described input voltage;
Because the power of motor obtained in step S12 contains the power of inverter IPM consumption, the power conversion that voltage transformation inverter consumes, will cause power results to change.Be specially: during refrigeration: have condensed water to cause evaporimeter windage to strengthen, power becomes large.When heating: air oxygen detrition, windage is little.Therefore, the realtime power by motor carry out dirty stifled value judge time, the impact that the power input voltage of air-conditioner calculates dirty stifled value must be considered.Therefore, by the power input voltage according to air-conditioner in the present embodiment, dirty stifled value is revised.Concrete correction value acquisition process is: obtain the power input voltage that air-conditioner is current, then by following input voltage correction function, calculates the dirty stifled correction value of acquisition second:
F1(Uac)＝a*Uac2+b*Uac+c。
Wherein, Uac is input voltage, and the span of this Uac is 130V-280V, and this scope is the supply voltage scope of air-conditioner need of work, and surpass and go beyond the scope, whole air-conditioner all will quit work; A, b, c are constant, and in the present embodiment, preferred a is 0.005, b be 2.631, c is-284.
Step S15, according to described first dirty stifled correction value and the second dirty stifled correction value, described realtime power to be compensated, obtain new dirty stifled value;
By following preset function, calculate and obtain new dirty stifled value:
F＝F(P，Uac，Hum，Fr)＝P+F1(Uac)+F2(Hum，Fr)。
Wherein, F1 (Uac) is voltage correction function, is substituted into by the power input voltage of the air-conditioner of acquisition in this voltage correction function, can obtain the dirty bridging fruit of correction of voltage; F2 (Hum, Fr) is humidity-compressor operating frequency correction function, the humidity of acquisition and compressor operating frequency is substituted in this humidity-compressor operating frequency correction function, obtains the dirty bridging fruit of correction of humidity and air-conditioner running frequency.
Step S16, default dirty stifled standard value corresponding for rotating speed identical with described motor speed for described dirty stifled value newly to be compared, judge whether air-conditioner reaches dirty stifled condition;
Default dirty stifled standard value corresponding to the rotating speed that above-mentioned motor speed is identical can for dispatching from the factory time manufacturer set, and being stored in the EEPROM of air-conditioner, recalling use by air-conditioner when carrying out dirty stifled control.Certainly, default dirty stifled standard value corresponding to the rotating speed that above-mentioned motor speed is identical also can be tested by air-conditioner and to be obtained under air-conditioner is in desirable clean condition, and also can consider the impact on this dirty stifled value of compressor, humidity, power input voltage in this test process.
Step S17, when air-conditioner reaches dirty stifled condition, control air-conditioner carry out dirty stifled process.
When judging that air-conditioner reaches dirty stifled condition, then can send control signal, carrying out dirty stifled process to control air-conditioner.Be understandable that, also can produce cue, trigger dirty stifled processing instruction to point out user.
The dirty blocking control method of the air-conditioner outdoor unit that the present embodiment provides, consider the factor of the dirty stifled judgements of impact such as line voltage, ambient humidity and compressor frequency, therefore can the dirty stifled situation of sensing chamber's external heat exchanger and the demand of in good time dedusting exactly, also not by the impact of the factors such as user's line voltage, air humidity, compressor frequency, ensure that refrigeration and the heating effect of air-conditioner, improve user health degree and comfortableness further.
Further, as shown in Figure 2, above-mentioned steps S16 comprises:
Step S161, calculate the ratio of default dirty stifled standard value corresponding to the new dirty stifled value rotating speed identical with described motor speed;
Step S162, the wind wheel type be proportionate for windage and power, when described ratio is greater than first predetermined threshold value, then judge that air-conditioner reaches dirty stifled condition; When described ratio is less than or equal to described first predetermined threshold value, then judge that air-conditioner does not reach dirty stifled condition;
Step S163, be the wind wheel type of negative correlation for windage and power, when described ratio is less than second predetermined threshold value, then judge that air-conditioner reaches dirty stifled condition; When described ratio is more than or equal to described second predetermined threshold value, then judge that air-conditioner does not reach dirty stifled condition.
Such as, the rotating speed obtaining motor is ω
r, after the realtime power of motor and correcting process, will new dirty stifled value F be obtained, and from the EEPROM of air-conditioner, obtain rotating speed be ω
rtime, the default dirty stifled value of its correspondence is F
ω 0.Then, dirty stifledly F is worth according to this new dirty stifled value F with presetting
ω 0, the ratio calculated between the two is
due to the wind wheel type be proportionate for windage and power, when the dirty stifled windage of filter screen increases, power increases, as axial-flow windwheel, therefore for the wind wheel type that windage and power are proportionate, when
time, be then judged as that air-conditioner occurs dirty stifled, wherein (100+X) % is the first predetermined threshold value, and X is the parameter preset between 2 ~ 30; Owing to for windage and power being the wind wheel type of negative correlation, as tubular wine wheel, therefore power reduction when the dirty stifled windage of filter screen increases, is the wind wheel type of negative correlation for windage and power, when
time, be then judged as that air-conditioner occurs dirty stifled, wherein (100-X) % is the second predetermined threshold value, and X is the parameter preset between 2 ~ 30.The value of the present embodiment X is between 4 ~ 20.Air-conditioner is dirty stifled depends on air-conditioner working time and air ambient, and the point that average family air-conditioner work about 3 months inner blower power has 2%-5% reduces; The environment air-conditioner such as PE, factory building device work 2 years inner blower power has the reduction of about 20%.This parameter, be experimentally compare to draw, by the data that very dirty filter screen gathers, and not dirty data compare, and draw several numerical value section.
Further, above-mentioned steps S17 is specially: when air-conditioner reaches dirty stifled condition, controls motor in the rear rotating of air-conditioner shutdown with dedusting.Because off-premises station is generally arranged on open air, user's dismounting inconvenience, labor cleaning's heat exchanger bothers very much, therefore in the present embodiment, carries out rotating process, to realize automatic dust removing by controlling motor after air-conditioner shutdown.
In the process of carrying out dedusting, also circulation is performed step S11-step S15, to obtain new dirty stifled value; For the wind wheel type that windage and power are proportionate, when the ratio of the default dirty stifled standard value that the rotating speed identical with described motor speed when described dirty stifled value is newly corresponding is greater than the 3rd predetermined threshold value, terminate dedusting; For the wind wheel type that windage and power are proportionate, when the ratio of the default dirty stifled standard value that the rotating speed identical with described motor speed when described dirty stifled value is newly corresponding is less than the 4th predetermined threshold value, terminate dedusting.
In the present embodiment, for the wind wheel type that windage and power are proportionate, when the dirty stifled windage of filter screen increases, power increases, as axial-flow windwheel, therefore, for the wind wheel type that windage and power are proportionate, the ratio of the default dirty stifled standard value that the rotating speed that described dirty stifled value is newly identical with described motor speed is corresponding
when being greater than the 3rd predetermined threshold value, stop motor positive and inverse, terminate dedusting.3rd predetermined threshold value is (100+X/2) %, and X is the parameter preset between 2 ~ 30, and the value of the present embodiment X is between 4 ~ 20.For the wind wheel type that windage and power are negative correlation, power reduction when the dirty stifled windage of filter screen increases, as tubular wine wheel, the ratio of the default dirty stifled standard value that the rotating speed that described dirty stifled value is newly identical with described motor speed is corresponding
when being less than the 4th predetermined threshold value, stop motor positive and inverse, terminate dedusting.4th predetermined threshold value is (100-X/2) %, and X is the parameter preset between 2 ~ 30.The value of the present embodiment X is between 4 ~ 20.
Further, a kind of air-conditioner outdoor unit is proposed.As shown in Figures 3 and 4, the outdoor motor 50 of compressor 10, heat exchanger 20, outdoor fan 30, electric-controlled plate 40 and driving outdoor fan 30 is provided with in this air-conditioner outdoor unit.Described electric-controlled plate 40 is provided with and controls the dirty stifled control device 60 of off-premises station, and this control device 60 comprises:
Motor information acquisition unit 61, for obtaining the operational factor of motor, described operational factor comprises motor speed, electric moter voltage, current of electric;
Realtime power computing unit 62, for according to described electric moter voltage and current of electric, calculates the realtime power obtaining motor;
First dirty stifled amending unit 63, for obtaining current ambient humidity and the frequency of compressor, and according to the humidity-frequency correction function preset, obtains the first dirty stifled correction value corresponding with the frequency of described ambient humidity and compressor;
Second dirty stifled amending unit 64, for obtaining current air-conditioner input voltage, and according to the input voltage correction function preset, obtains the second dirty stifled correction value corresponding with described input voltage;
Dirty stifled value computing unit 65, for compensating described realtime power according to described first dirty stifled correction value and the second dirty stifled correction value, obtains new dirty stifled value;
Dirty stifled judging unit 66, for default dirty stifled standard value corresponding for rotating speed identical with described motor speed for described dirty stifled value newly being compared, judges whether air-conditioner reaches dirty stifled condition;
Dirty stifled processing unit 67, for when air-conditioner reaches dirty stifled condition, controls air-conditioner and carries out dirty stifled process.
In above-mentioned control device, motor information acquisition unit 61 can be divided into three subelements: voltage obtains subelement, electric current obtains subelement and rotating speed obtains subelement.The job order of three subelements does not limit, and also can carry out simultaneously.
After motor information acquisition unit 61 obtains the operational factor of motor, realtime power computing unit 62 electric currents according to motor and voltage, calculate the realtime power obtaining motor.Then the second dirty stifled correction value of calculating of the first dirty stifled correction value of calculating according to the first dirty stifled amending unit 63 of dirty stifled value computing unit 65 and the second dirty stifled amending unit 64, carries out dirty stifled value correction to the realtime power of motor, obtains new dirty stifled value F.Then dirty stifled judging unit 66 obtains the current rotational speed omega of motor
rcorresponding dirty stifled standard value F
ω 0, and by new dirty stifled value F and dirty stifled standard value F
ω 0compare, judge whether air-conditioner reaches dirty stifled condition.When air-conditioner reaches dirty stifled condition, dirty stifled processing unit 67 controls air-conditioner and carries out dirty stifled process.
Particularly, described dirty stifled judging unit 66 is for the ratio calculating default dirty stifled standard value corresponding to the new dirty stifled value rotating speed identical with described motor speed; For the wind wheel type that windage and power are proportionate, when described ratio is greater than first predetermined threshold value, then judge that air-conditioner reaches dirty stifled condition; When described ratio is less than or equal to described first predetermined threshold value, then judge that air-conditioner does not reach dirty stifled condition; For the wind wheel type that windage and power are negative correlation, when described ratio is less than second predetermined threshold value, then judge that air-conditioner reaches dirty stifled condition; When described ratio is more than or equal to described second predetermined threshold value, then judge that air-conditioner does not reach dirty stifled condition.
Due to the wind wheel type be proportionate for windage and power, when the dirty stifled windage of filter screen increases, power increases, as axial-flow windwheel, therefore for the wind wheel type that windage and power are proportionate, when
time, be then judged as that air-conditioner occurs dirty stifled, wherein (100+X) % is the first predetermined threshold value, and X is the parameter preset between 2 ~ 30; Owing to for windage and power being the wind wheel type of negative correlation, as tubular wine wheel, therefore power reduction when the dirty stifled windage of filter screen increases, is the wind wheel type of negative correlation for windage and power, when
time, be then judged as that air-conditioner occurs dirty stifled, wherein (100-X) % is the second predetermined threshold value, and X is the parameter preset between 2 ~ 30.The value of the present embodiment X is between 4 ~ 20.
Particularly, dirty stifled processing unit 67 controls motor in the rear rotating of air-conditioner shutdown with dedusting.And, dirty stifled processing unit 67 will in dust removal process, regain new dirty stifled value, for the wind wheel type that windage and power are proportionate, when the ratio of the default dirty stifled standard value that the rotating speed identical with described motor speed when described dirty stifled value is newly corresponding is greater than the 3rd predetermined threshold value, terminate dedusting; For the wind wheel type that windage and power are proportionate, when the ratio of the default dirty stifled standard value that the rotating speed identical with described motor speed when described dirty stifled value is newly corresponding is less than the 4th predetermined threshold value, terminate dedusting.
In the present embodiment, for the wind wheel type that windage and power are proportionate, when the dirty stifled windage of filter screen increases, power increases, as axial-flow windwheel, therefore, for the wind wheel type that windage and power are proportionate, the ratio of the default dirty stifled standard value that the rotating speed that described dirty stifled value is newly identical with described motor speed is corresponding
when being greater than the 3rd predetermined threshold value, stop motor positive and inverse, terminate dedusting.3rd predetermined threshold value is (100+X/2) %, and X is the parameter preset between 2 ~ 30, and the value of the present embodiment X is between 4 ~ 20.For the wind wheel type that windage and power are negative correlation, power reduction when the dirty stifled windage of filter screen increases, as tubular wine wheel, the ratio of the default dirty stifled standard value that the rotating speed that described dirty stifled value is newly identical with described motor speed is corresponding
when being less than the 4th predetermined threshold value, stop motor positive and inverse, terminate dedusting.4th predetermined threshold value is (100-X/2) %, and X is the parameter preset between 2 ~ 30.The value of the present embodiment X is between 4 ~ 20.
The specific works process of each functional module of above-mentioned control device can refer to described in previous methods embodiment, just repeats no more at this.
The dirty blocking control method of the air-conditioner outdoor unit that the present embodiment provides, consider the factor of the dirty stifled judgements of impact such as line voltage, ambient humidity and compressor frequency, therefore can the dirty stifled situation of sensing chamber's external heat exchanger and the demand of in good time dedusting exactly, also not by the impact of the factors such as user's line voltage, air humidity, compressor frequency, ensure that refrigeration and the heating effect of air-conditioner, improve user health degree and comfortableness further.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (11)
1. a dirty blocking control method for air-conditioner outdoor unit, is characterized in that, the dirty blocking control method of described air-conditioner outdoor unit comprises the following steps:
The operational factor of step S11, acquisition motor, described operational factor comprises motor speed, electric moter voltage, current of electric;
Step S12, according to described electric moter voltage and current of electric, calculate and obtain the realtime power of motor;
Step S13, obtain current ambient humidity and the frequency of compressor, and according to the humidity-frequency correction function preset, obtain the first dirty stifled correction value corresponding with the frequency of described ambient humidity and compressor;
Step S14, obtain current air-conditioner input voltage, and according to the input voltage correction function preset, obtain the second dirty stifled correction value corresponding with described input voltage;
Step S15, according to described first dirty stifled correction value and the second dirty stifled correction value, described realtime power to be compensated, obtain new dirty stifled value;
Step S16, default dirty stifled standard value corresponding for rotating speed identical with described motor speed for described dirty stifled value newly to be compared, judge whether air-conditioner reaches dirty stifled condition;
Step S17, when air-conditioner reaches dirty stifled condition, control air-conditioner carry out dirty stifled process.
2. the dirty blocking control method of air-conditioner outdoor unit as claimed in claim 1, is characterized in that, described when air-conditioner reaches dirty stifled condition, and control air-conditioner carries out dirty stifled process and comprises:
When air-conditioner reaches dirty stifled condition, control motor in the rear rotating of air-conditioner shutdown with dedusting.
3. the dirty blocking control method of air-conditioner outdoor unit as claimed in claim 1, is characterized in that, describedly default dirty stifled standard value corresponding for rotating speed identical with described motor speed for new dirty stifled value is compared, and judges whether air-conditioner reaches dirty stifled condition and comprise:
Calculate the ratio of default dirty stifled standard value corresponding to the new dirty stifled value rotating speed identical with described motor speed;
For the wind wheel type that windage and power are proportionate, when described ratio is greater than first predetermined threshold value, then judge that air-conditioner reaches dirty stifled condition; When described ratio is less than or equal to described first predetermined threshold value, then judge that air-conditioner does not reach dirty stifled condition;
For the wind wheel type that windage and power are negative correlation, when described ratio is less than second predetermined threshold value, then judge that air-conditioner reaches dirty stifled condition; When described ratio is more than or equal to described second predetermined threshold value, then judge that air-conditioner does not reach dirty stifled condition.
4. the dirty blocking control method of air-conditioner outdoor unit as claimed in claim 3, it is characterized in that, described first predetermined threshold value is (100+X) %, and described second predetermined threshold value is (100-X) %, and wherein the span of X is 2-30.
5. the dirty blocking control method of the air-conditioner outdoor unit as described in any one of claim 1-4, is characterized in that, described control motor also comprises after the rear rotating of air-conditioner shutdown is with the step of dedusting:
Perform step S11-step S15 successively, obtain new dirty stifled value;
For the wind wheel type that windage and power are proportionate, when the ratio of the default dirty stifled standard value that the rotating speed identical with described motor speed when described dirty stifled value is newly corresponding is greater than the 3rd predetermined threshold value, terminate dedusting;
For the wind wheel type that windage and power are proportionate, when the ratio of the default dirty stifled standard value that the rotating speed identical with described motor speed when described dirty stifled value is newly corresponding is less than the 4th predetermined threshold value, terminate dedusting.
6. the dirty blocking control method of air-conditioner outdoor unit as claimed in claim 5, it is characterized in that, described 3rd predetermined threshold value is (100+X/2) %, and described 4th predetermined threshold value is (100-X/2) %, and wherein the span of X is 2-30.
7. an air-conditioner outdoor unit, the outdoor motor of compressor, heat exchanger, outdoor fan, electric-controlled plate and driving outdoor fan is provided with in described off-premises station, it is characterized in that, described electric-controlled plate is provided with and controls the dirty stifled control device of off-premises station, and this control device comprises:
Motor information acquisition unit, for obtaining the operational factor of motor, described operational factor comprises motor speed, electric moter voltage, current of electric;
Realtime power computing unit, for according to described electric moter voltage and current of electric, calculates the realtime power obtaining motor;
First dirty stifled amending unit, for obtaining current ambient humidity and the frequency of compressor, and according to the humidity-frequency correction function preset, obtains the first dirty stifled correction value corresponding with the frequency of described ambient humidity and compressor;
Second dirty stifled amending unit, for obtaining current air-conditioner input voltage, and according to the input voltage correction function preset, obtains the second dirty stifled correction value corresponding with described input voltage;
Dirty stifled value computing unit, for compensating described realtime power according to described first dirty stifled correction value and the second dirty stifled correction value, obtains new dirty stifled value;
Dirty stifled judging unit, for default dirty stifled standard value corresponding for rotating speed identical with described motor speed for described dirty stifled value newly being compared, judges whether air-conditioner reaches dirty stifled condition;
Dirty stifled processing unit, for when air-conditioner reaches dirty stifled condition, controls air-conditioner and carries out dirty stifled process.
8. air-conditioner outdoor unit as claimed in claim 7, it is characterized in that, described dirty stifled processing unit is used for: when air-conditioner reaches dirty stifled condition, controls motor in the rear rotating of air-conditioner shutdown with dedusting.
9. air-conditioner outdoor unit as claimed in claim 7, it is characterized in that, described dirty stifled judging unit is used for:
Calculate the ratio of default dirty stifled standard value corresponding to the new dirty stifled value rotating speed identical with described motor speed;
For the wind wheel type that windage and power are proportionate, when described ratio is greater than first predetermined threshold value, then judge that air-conditioner reaches dirty stifled condition; When described ratio is less than or equal to described first predetermined threshold value, then judge that air-conditioner does not reach dirty stifled condition;
For the wind wheel type that windage and power are negative correlation, when described ratio is less than second predetermined threshold value, then judge that air-conditioner reaches dirty stifled condition; When described ratio is more than or equal to described second predetermined threshold value, then judge that air-conditioner does not reach dirty stifled condition.
10. air-conditioner outdoor unit as claimed in claim 9, is characterized in that, described dirty stifled processing unit also for:
Regain new dirty stifled value;
For the wind wheel type that windage and power are proportionate, when the ratio of the default dirty stifled standard value that the rotating speed identical with described motor speed when described dirty stifled value is newly corresponding is greater than the 3rd predetermined threshold value, terminate dedusting;
For the wind wheel type that windage and power are proportionate, when the ratio of the default dirty stifled standard value that the rotating speed identical with described motor speed when described dirty stifled value is newly corresponding is less than the 4th predetermined threshold value, terminate dedusting.
11. air-conditioner outdoor units as claimed in claim 10, it is characterized in that, described first predetermined threshold value is (100+X) %, described second predetermined threshold value is (100-X) %, described 3rd predetermined threshold value is (100+X/2) %, described 4th predetermined threshold value is (100-X/2) %, and wherein the span of X is 2-30.
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| CN105910179A (en) * | 2016-05-23 | 2016-08-31 | 珠海格力电器股份有限公司 | Air conditioner outdoor unit with dust removal function and dust removal control method thereof |
| CN106091251A (en) * | 2016-06-14 | 2016-11-09 | 珠海格力电器股份有限公司 | Filth blockage judging method and device for heat exchanger and air conditioner |
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| CN108413572A (en) * | 2018-02-14 | 2018-08-17 | 青岛海尔空调器有限总公司 | Automatically cleaning control method for air conditioner |
| CN109489192A (en) * | 2018-10-10 | 2019-03-19 | 珠海格力电器股份有限公司 | Fin cleaning method and device and air conditioning unit |
| CN110567118A (en) * | 2019-09-03 | 2019-12-13 | 珠海格力电器股份有限公司 | Automatic dust removal method and device for unit and unit |
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