CN113048621B - Automatic dust removal control method and device for outdoor unit and air conditioner - Google Patents

Automatic dust removal control method and device for outdoor unit and air conditioner Download PDF

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Publication number
CN113048621B
CN113048621B CN202110479318.2A CN202110479318A CN113048621B CN 113048621 B CN113048621 B CN 113048621B CN 202110479318 A CN202110479318 A CN 202110479318A CN 113048621 B CN113048621 B CN 113048621B
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unit
dust removal
equal
fan
controlling
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CN113048621A (en
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张稳
刘合心
刘永超
程相欣
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Aux Air Conditioning Co Ltd
Ningbo Aux Electric Co Ltd
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Ningbo Aux Electric Co Ltd
Ningbo Aux Intelligent Commercial Air Conditioning Manufacturing Co Ltd
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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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B5/00—Cleaning by methods involving the use of air flow or gas flow
    • B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
    • 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
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • 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
    • F24F11/77—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 by controlling the speed of ventilators
    • 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
    • F24F11/88—Electrical aspects, e.g. circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/40—Damper positions, e.g. open or closed
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Fluid Mechanics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention provides an automatic dust removal control method and device for an outdoor unit and an air conditioner, wherein the automatic dust removal control method for the outdoor unit comprises the following steps: obtaining an initial unit pressure value P of the unit stably running in the current staten(ii) a Controlling the unit to continuously keep the current state running, and monitoring to obtain a current unit pressure value P and an external environment temperature value Tal(ii) a According to the P and the PnDifference value of (1), the external ambient temperature value TalAnd controlling the fan of the external machine to reversely rotate by different windshields for dust removal. The embodiment of the invention obtains the initial unit pressure value P of the unit under the stable operation in the current statenComparing the current unit pressure value P and the external environment temperature value T under the stable operation of the current statealThe dust accumulation scene is identified, the reverse rotation of the outer machine fan is accurately controlled to remove dust, and the frequent reverse rotation of the outer machine fan is reduced, so that the embodiment of the invention can achieve the purposes of saving energy and electricity and effectively removing dust.

Description

Automatic dust removal control method and device for outdoor unit and air conditioner
Technical Field
The invention relates to the technical field of control, in particular to an automatic dust removal control method for an outdoor unit, an automatic dust removal control device for the outdoor unit and an air conditioner.
Background
At present, the phenomenon of dust accumulation and dust accumulation of the outdoor unit of the air conditioner is serious because the outdoor unit of the air conditioner is exposed in the external environment for a long time. In the refrigeration season, dust on the surface of the heat exchanger is taken away through condensate water due to the fact that the defrosting process is not carried out, and the phenomenon of dust deposition and dust deposition is more serious.
The general air conditioner outdoor unit does not have a dust removal function, the outdoor unit cannot be subjected to dust removal, the air conditioner heat exchange effect is reduced due to dust deposition and dust deposition, and the power consumption of the unit is increased.
Disclosure of Invention
The problems solved by the invention are as follows: the existing air conditioner can not automatically remove dust of an outdoor unit, and the heat exchange effect of the air conditioner is reduced and the power consumption of a unit is increased due to dust deposition and dust deposition.
In order to solve the above problems, an embodiment of the present invention provides an automatic dust removal control method for an outdoor unit, including: obtaining an initial unit pressure value P of the unit stably running in the current staten(ii) a Controlling the unit to continuously keep the current state running, and monitoring to obtain a current unit pressure value P and an external environment temperature value Tal(ii) a According to the P and the PnDifference value of (1), the external ambient temperature value TalAnd controlling the fan of the external machine to reversely rotate by different windshields for dust removal.
Compared with the prior art, the embodiment of the invention obtains the initial unit pressure value P of the unit under the stable operation of the current statenComparing the current unit pressure value P and the external environment temperature value T under the stable operation of the current statealThe dust accumulation scene is identified, the reverse rotation of the outer machine fan is accurately controlled to remove dust, and the frequent reverse rotation of the outer machine fan is reduced, so that the embodiment of the invention can achieve the purposes of saving energy and electricity and effectively removing dust.
In an alternative embodiment, P is based on P and PnDifference value of (1), the external ambient temperature value TalAnd the outer fan of control removes dust with different windscreen reversals, includes: calculating the pressure deviation value delta P of the unith＝P-Pn(ii) a According to the delta PhAnd TalControlling the outer machine fan to rotate reversely under the corresponding wind gear to remove dust; wherein, T isalIs the external environment temperature value T in the current stateal。
Understandably, by the unit pressure deviation Δ PhTemperature value T of external environmentalThe gear requirements of the fan of the outdoor unit in the dust removal control are identified, the dust removal control is realized according to the requirements, and the purposes of energy conservation and power saving are achieved.
In an alternative embodiment, said determining is in accordance with said Δ PhAnd TalControlling the outer machine fan to rotate reversely under the corresponding wind gear to remove dust; the method comprises the following steps: the described Δ PhWhen the same, the TalThe smaller the reverse gear is, the larger the reverse gear is controlled by the outer machine fan.
As can be appreciated, the stack pressure offset value Δ PhAt a certain time, different external environment temperatures and different rotating speeds of the fan of the external machine are required; the lower the external ambient temperature, the lower the deviation Δ P of the unit pressurehCertainly, the outdoor unit accumulates relatively more dust, and the reverse rotation speed of the outdoor unit fan needs to be increased correspondingly so as to ensure effective dust removal of the outdoor unit.
In an alternative embodiment, said determining is in accordance with said Δ PhAnd TalControlling the outer machine fan to rotate reversely under the corresponding wind gear to remove dust; the method comprises the following steps: the T isalAt the same time, the Δ PhThe larger the reverse gear of the outer machine fan is controlled.
It will be appreciated that the external ambient temperature value TalUnder certain conditions, the pressure deviation value delta P of the unithThe larger the pressure difference is, the more dust is accumulated in the outdoor unit, the heat exchange effect of the unit is reduced, and the pressure deviation value delta P of the unit is causedhIncreasing; the reverse rotation speed of the fan of the outdoor unit is increased correspondingly to ensure effective dust removal of the outdoor unit.
In an alternative embodiment, the Δ P is based onhAnd said TalControlling the fan of the outdoor unit to rotate reversely under the corresponding wind shield to remove dust; the method comprises the following steps: at TalAt the temperature of more than or equal to 30 ℃; if d < Δ PhE, controlling the outer fan to 1/2 (S)min+Smax) Gear reversal dedusting; or, Δ PhE or more, controlling the outer fan to 1/2 (S)mid+Smax) Gear reversal dedusting; d is more than or equal to 0.5bar and less than or equal to 1 bar; e is more than or equal to 1bar and less than or equal to 2 bar; sminIs the minimum gear S of the fan of the external unitmaxIs the maximum gear position SmidIs a middle gear of the fan of the outer machine.
Can clean upSolved, at an external ambient temperature value TalWhen the temperature is more than or equal to 30 ℃, under the condition of the same starting number of the internal machines, the corresponding initial unit pressure value is at a higher value; at the moment, when the pressure value of the unit changes, the saturation temperature corresponding to the pressure value of the unit changes slowly, and the influence on the heat exchange of the system is small. Therefore, when the variation of the unit pressure value is small, the corresponding unit pressure deviation value delta PhThe change is small, and the dust removal control can not be carried out.
When the pressure value of the unit changes greatly, the corresponding pressure deviation value delta P of the unithLarge variation, e.g. d < Δ PhWhen the temperature is less than or equal to e, controlling the outer machine fan to 1/2 (S)min+Smax) Gear reversal dust removal; when Δ PhE or more, controlling the outer fan to 1/2 (S)mid+Smax) Gear reversal dust removal, Ta1Same, with Δ PhThe larger the fan is, the wind speed of the outer fan is controlled to be gradually increased, and the aim of effectively removing dust is achieved.
In an alternative embodiment, the Δ P is based onhAnd said TalControlling the outer machine fan to rotate reversely under the corresponding wind gear to remove dust; the method comprises the following steps: at TalUnder the condition of less than or equal to 20 ℃; if c < Δ PhD is less than or equal to d, the fan of the outer machine is controlled by SminGear reversal dust removal; or, d < Δ PhE, controlling the outer fan to 1/2 (S)mid+Smax) Gear reversal dust removal; or, Δ PhIf the value is more than or equal to e, controlling the fan of the external unit to be SmaxGear reversal dust removal; c is more than or equal to 0.1bar and less than or equal to 0.5 bar.
It will be appreciated that the external ambient temperature value TalWhen the temperature is less than or equal to 20 ℃, under the condition of the same starting number of the internal machines, the corresponding initial unit pressure value is at a lower value; at this moment, when the unit pressure value changes, the saturation temperature corresponding to the unit pressure value changes rapidly, and the influence on the system heat exchange is large.
Therefore, when c < Δ PhD is less than or equal to d, the fan of the outer machine is controlled by SminGear reversal dedusting; if d < Δ PhE, controlling the outer fan to 1/2 (S)mid+Smax) Gear reversal dust removal; or, Δ PhIf the value is more than or equal to e, controlling the fan of the external unit to be SmaxAnd gear reversal dust removal. When the pressure value of the unit changes little, the corresponding pressure deviation value delta P of the unithThe change is small, and the dust removal control can not be carried out.
In an alternative embodiment, the Δ P is based onhAnd said TalControlling the outer machine fan to rotate reversely under the corresponding wind gear to remove dust; the method comprises the following steps: t is more than or equal to 20 DEG CalUnder the condition of less than or equal to 30 ℃; or, c < Δ PhD is less than or equal to d, the fan of the outer machine is controlled by SminGear reversal dust removal; or, d < Δ PhE is less than or equal to e, the fan of the external machine is controlled by SmidGear reversal dust removal; or, Δ PhIf the value is more than or equal to e, controlling the fan of the external unit to be SmaxAnd gear reversal dust removal.
As can be appreciated, T is 20 ℃ ≦ TalUnder the condition of less than or equal to 30 ℃; with Δ PhThe rotating speed gear of the fan of the external machine is controlled to be continuously improved; the dust removal rate is improved, so that the aim of effectively removing dust is fulfilled.
In an optional embodiment, an initial unit pressure value P of the unit stably operating in the current state is obtainednFurther comprising: searching whether an initial unit pressure value P corresponding to the current state exists in a state pressure gauge or notnWhen present, directly reading the P in the status gaugen(ii) a When the pressure value P does not exist, the unit continues to operate in the current state, and the pressure value of the unit is obtained within a preset time length and is used as the pressure value PnAnd the current state and the P are combinednAnd writing the state pressure gauge.
It can be understood that when the corresponding unit pressure value P exists in the state pressure gauge of the unit system under the current state, the unit pressure value P is directly called, and therefore the efficiency is improved and the dust removal accuracy is improved.
In an optional embodiment, when the pressure value P does not exist, the unit continues to operate in the current state, and the unit pressure value P is obtained within a preset time periodnAnd the current state and the P are combinednWrite in the state manometer still includes: controlling the unit to continue at the currentOperating in a state; obtaining the pressure value of the unit for multiple times within preset time, and taking the average value as Pn(ii) a Associating the current state with the PnAnd writing the state pressure gauge.
It can be understood that the unit pressure value is obtained for a plurality of times within the preset time, and the average value is PnThe accuracy of parameter acquisition is improved so as to control the outer machine to accurately remove dust; at the same time, P is obtained under the stable operation of the current statenWriting the state pressure gauge with the current state, so that the corresponding P can be directly called when the current state of the unit stably runsnAs the initial unit pressure value; not only improves the dust removal precision, but also avoids frequent dust removal, and achieves the purposes of energy saving and power saving.
In an optional embodiment, the unit is operated stably in the current state; the method comprises the following steps: monitoring the running state of the unit to be the current state; wherein the current state comprises an external ambient temperature value TalThe number N of indoor units in the starting stateon(ii) a And monitoring that the running time of the unit for keeping the current state is at least H.
The method has the advantages that the external environment temperature value and the number of the indoor units in the starting state are used as the judgment parameters of the operation state of the unit, so that the influence on the heat exchange of the unit system is identified, and then the segmented identification of dust removal scenes in different operation states is realized, and the frequent dust removal is reduced.
The invention also provides an automatic dust removal control device for the outdoor unit, which comprises: an obtaining module, configured to obtain an initial unit pressure value P of the unit in a stable operation state at the current staten(ii) a A monitoring module for controlling the unit to continuously keep the current state running, and obtaining the current unit pressure value P and the external environment temperature value T through monitoringal(ii) a A control module for controlling the power supply according to the P and the PnDifference value of (1), the external ambient temperature value TalAnd controlling the fan of the external machine to reversely rotate by different windshields for dust removal.
The invention also provides an air conditioner, which comprises a readable storage medium and a package IC, wherein the readable storage medium stores a computer program, and the package IC is electrically connected with the readable storage medium, and when the computer program is read by the package IC and is run, the air conditioner realizes the automatic dust removal control method for the outdoor unit in any embodiment.
The invention also provides a storage medium, wherein the storage medium stores computer-executable instructions, and when the computer-executable instructions are read and operated by a processor, the storage medium controls equipment where the storage medium is located to realize the automatic dust removal control method of the outdoor unit in any embodiment.
The invention has the following beneficial effects:
1) the dust accumulation scene can be identified, the reverse rotation of the outer machine fan can be accurately controlled to remove dust, and the frequent reverse rotation of the outer machine fan is reduced, so that the embodiment of the invention can achieve the purposes of saving energy and electricity and removing dust;
2) the method comprises the following steps of acquiring corresponding initial unit pressure values under different operation states of a unit as judgment parameters, so that a scene of dust deposition and dust deposition is identified, the aim of accurate dust removal is fulfilled, the heat exchange effect after dust removal is ensured, and frequent reversal of a fan caused by dust removal is reduced;
3) by unit pressure deviation value delta PhTemperature value T of external environmentalThe gear requirements of the fan of the outdoor unit in the dust removal control are identified, the dust removal control is realized according to the requirements, and the purposes of energy conservation and power saving are achieved.
Drawings
Fig. 1 is a flowchart illustrating an automatic dust removal control method for an outdoor unit according to a first embodiment of the present invention;
fig. 2 is a schematic block diagram illustrating an automatic dust removal control device 200 of an outdoor unit according to a second embodiment of the present invention;
fig. 3 is a block diagram of an air conditioner 300 according to a third embodiment;
fig. 4 is a block diagram schematically illustrating the structure of the storage medium 600.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
[ first embodiment ] A method for manufacturing a semiconductor device
Referring to fig. 1, it is a schematic flow chart of an automatic dust removal control method for an outdoor unit according to a first embodiment of the present invention. The method comprises the following steps:
s110, acquiring an initial unit pressure value P of the unit stably running in the current staten。
It should be noted that: monitoring the stable operation of the unit in the current state, i.e. monitoring the external ambient temperature value TalNumber N of indoor units in the on stateon(ii) a For example, the external environment temperature value can be monitored by a temperature sensor arranged on the unit; the starting number of the indoor units is judged through a starting electric signal transmitted by the indoor units connected with the unit; monitoring the unit to maintain at a monitored external ambient temperature value TalNumber N of indoor units in starting stateonAnd the running time is at least H, namely the unit stably runs in the current state.
S120, controlling the unit to continuously keep the current state to operate, and monitoring to obtain a current unit pressure value P and an external environment temperature value Tal。
S130, according to the P and the PnDifference value of (1), the external ambient temperature value TalAnd controlling the fan of the external machine to reversely rotate by different windshields for dust removal.
Wherein, according to the P and the P1And an external ambient temperature value TalControlling the fan of the outdoor unit to rotate reversely to remove dust; the dust collection control system is convenient for the unit to accurately identify dust collection scenes, accurately controls the reverse rotation of the outer machine fan to remove dust, and reduces the frequent reverse rotation of the outer machine fan, so that the embodiment of the invention can achieve the purposes of saving energy and electricity and removing dust.
The above-mentioned automatic dust removal control method for the outdoor unit is clearly and specifically exemplified in combination with the use scenarios provided below.
Starting up a certain unit to operate; the unit obtains an external environment temperature value Ta1Obtaining the number of the indoor units which are started up to N at 30 DEG Con15 stands.
Operating the unit for 30minWithin the 30min, the number of the indoor units is Non1Always 5 external environment temperature values Ta1Constant at 30 ℃; namely, the temperature value T of the unit in the external environment is determineda130 ℃ and the number of the indoor units started is Non1The operation was stable in the state of 5 stages.
At the moment, the unit system is based on the external environment temperature value Ta130 deg.C, and the number of the indoor units is Non15, correspondingly searching a state pressure gauge in the unit system,
if so, acquiring Ta1＝30℃、Non1P corresponding to 51And the pressure value is used as the initial unit pressure value.
If not, the unit is at external environment temperature value Ta130 deg.C constant, number N of indoor seton1Under the condition of 5, continuously operating the unit for 30min, continuously detecting the unit pressure value by a pressure detector during the period, taking the average value of the unit pressure values as an initial unit pressure value, and writing the initial unit pressure value into a state pressure gauge; the number of continuous detection is in the range of 1 to 5, preferably 2.
Operating according to the current operating state of the unit, and monitoring to obtain a current unit pressure value P; according to P and the obtained initial unit pressure value P1To obtain a pressure deviation value delta P of the unith。
It should be noted that: the state pressure gauge is a data table automatically generated in the unit system, when the unit operates in a certain state for the first time, the unit pressure value in the state can be automatically recorded as the corresponding initial unit pressure value, and the initial unit pressure value and the state are written into the state pressure gauge together, so that when the unit operates in a state again in future, the initial unit pressure value corresponding to the state is directly called from the state pressure gauge.
The state pressure gauge in the unit system can be seen in table 1:
table 1:
external ambient temperature value Number of indoor units started Initial unit pressure value
First state Ta1 Non1 P1
Second state Ta2 Non2 P2
Third state Ta2 Non3 P3
Fourth state Ta3 Non3 P4
…… …… …… ……
Wherein T isa1、Ta2、Ta3Different; n is a radical ofon1、Non2、Non3Different.
Pressure deviation value delta P of unithAnd an external ambient temperature value TalThe relationship between the reverse gear S of the outdoor unit fan can be seen in table 2:
table 2:
Figure BDA0003048561350000071
wherein, a is preferably [30 ℃, 35 ℃ ], b is preferably [15 ℃, 20 ℃, c is preferably [0.1bar, 0.5bar ], d is preferably (0.5bar, 1 bar), e is preferably (1bar, 2bar ];
NoA: at this time, the dust removal control is not performed, and the control is still performed according to the normal control. The high pressure deviation is too small, and dust removal control is not needed; smin: the minimum gear of the fan which is started during dust removal control generally takes the minimum gear which is allowed to operate by the fan as a value range, and the middle gear which is allowed to operate by the fan can be selected on the basis of particles which are blown out to a certain degree according to test conditions; smax: the maximum gear of the fan on during dust removal control is generally the maximum gear of the fan allowed to operate, so that dust removal is maximized; smid：＝1/2(Smin+Smax)。
The external environment temperature value obtained by the unit is 30 ℃, because the temperature is Ta1When the temperature is more than or equal to 30 ℃, under the condition of the same starting number of the internal machines, the corresponding initial unit pressure value is at a higher value; at the moment, when the pressure value of the unit changes, the saturation temperature corresponding to the pressure value of the unit changes slowly, and the influence on the heat exchange of the system is small. Therefore, when the variation of the unit pressure value is small, the corresponding unit pressure deviation value delta PhThe change is small, and the change is small,
for example, the unit pressure deviation Δ P obtained at this timehWhen d is less than or equal to d, the dust removal control is not performed; if d < Δ PhWhen the temperature is less than or equal to e, controlling the outer machine fan to 1/2 (S)min+Smax) Gear reversal dust removal; if Δ PhE or more, controlling the outer fan to 1/2 (S)mid+Smax) And gear reversal dust removal.
In another operation state, the unit obtains an external environment temperature value Ta2Obtaining the number of the indoor units which are started up to N at 18 DEG Con25 stands in terms of platform; obtaining the corresponding pressure deviation value delta P of the unit according to the modeh。
Ta2The temperature is less than or equal to 20 ℃, and the corresponding initial unit pressure value is at a lower value under the condition of the same starting number of the internal machines; at this moment, when the unit pressure value changes, the saturation temperature corresponding to the unit pressure value changes rapidly, and the influence on the system heat exchange is large.
For example, the obtained unit pressure deviation value satisfies the following conditions: c < delta PhWhen d is less than or equal to d, the fan of the outer machine is controlled by SminGear reversal dust removal; if d < Δ PhE, controlling the outer fan to 1/2 (S)mid+Smax) Gear reversal dust removal; if Δ PhIf the value is more than or equal to e, controlling the fan of the external unit to be SmaxAnd gear reversal dust removal. If Δ PhWhen c is less than or equal to c, no dust removal control is performed.
In another operating state, the unit obtains an external environment temperature value Ta2Obtaining the number of the indoor units which are started up to N at 25 DEG Con26 stands; obtaining the corresponding pressure deviation value delta P of the unit according to the modeh。
Ta3E (b, a); if the unit pressure deviation value delta PhSatisfies c < delta PhD is less than or equal to d, the fan of the outer machine is controlled by SminGear reversal dust removal; if d < Δ PhE is less than or equal to e, the fan of the external unit is controlled to be powered by SmidGear reversal dust removal; if Δ PhIf the value is more than or equal to e, controlling the fan of the external unit to be SmaxAnd gear reversal dust removal.
In conclusion: when the external environment temperature value is not changed, the temperature value is changed along with delta PhThe larger the gear S is, the larger the reverse gear S of the fan of the outer machine is controlled; when Δ PhMeanwhile, the smaller the external environment temperature value is, the larger the reverse gear S of the outer machine fan is controlled to be; the purpose of effective dust removal is achieved.
[ second embodiment ]
Referring to fig. 2, the present invention further provides an automatic dust removal control device 200 for an outdoor unit, including:
an obtaining module 210, configured to obtain an initial unit pressure value P of the unit stably operating in a current staten；
A monitoring module 220, configured to control the unit to continue to keep the current state of operation, and monitor and obtain a current unit pressure value P and an external environment temperature value Tal；
A control module 230 configured to control the P according to the P and the PnDifference value of (1), the external ambient temperature value TalAnd controlling the fan of the external machine to reversely rotate by different windshields for dust removal.
In a specific embodiment, the obtaining module 210, the monitoring module 220, and the control module 230 of the control device 200 for controlling automatic dust removal of an outdoor unit cooperate to implement the method for controlling automatic dust removal of an outdoor unit according to the first embodiment, which is not described herein again.
[ third embodiment ]
Referring to fig. 3, the present invention further provides an air conditioner 300, including a memory 310 storing a computer program and a package IC320 electrically connected to the memory, wherein when the computer program 311 is read and executed by the package IC320, the air conditioner 300 implements the method for controlling automatic dust removal of the outdoor unit according to the first embodiment. In one embodiment, the packaged IC320 is, for example, a processor chip electrically connected to the memory 310 for reading and executing the computer program. The packaged IC320 may also be a packaged circuit board that is packaged with a processor chip that can read and execute the computer program 311; of course, the circuit board may also encapsulate the memory 310.
On the other hand, the processor chip may further be provided with an automatic outdoor unit dust removal control device 200, and the processor chip may implement the automatic outdoor unit dust removal control method according to the first embodiment through the automatic outdoor unit dust removal control device 200, which is not described herein again.
[ fourth example ] A
Referring to fig. 4, an embodiment of the present invention further provides a storage medium 600, where the storage medium 600 stores computer-executable instructions 610, and when the computer-executable instructions 610 are read and executed by a processor, a controller in which the storage medium 600 is located is controlled to implement the method for controlling automatic dust removal of an outdoor unit according to the first embodiment.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, functional modules in the embodiments of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (9)

1. An automatic dust removal control method for an outdoor unit is characterized by comprising the following steps:
obtaining an initial unit pressure value P of the unit stably running in the current staten；
Controlling the unit to continuously keep the current state running, and monitoring to obtain a current unit pressure value P and an external environment temperature value Tal；
According to the P and the PnDifference value of (1), the external ambient temperature value TalControlling an outer machine fan to reversely rotate by different windshields for dedusting; according to the P and the PnDifference value of (1), the external ambient temperature value TalAnd the outer fan of control removes dust with different windscreen reversals, includes:
calculating the pressure deviation value delta P of the unith＝P-Pn；
According to the delta PhAnd TalControlling the outer machine fan to rotate reversely under the corresponding wind gear to remove dust; wherein, T isalIs the external environment temperature value T in the current stateal(ii) a According to the delta PhAnd TalControlling the outer machine fan to rotate reversely under the corresponding wind gear to remove dust; the method comprises the following steps:
the described Δ PhWhen the same, the TalThe smaller the reverse gear is, the larger the reverse gear is controlled by the outer machine fan.
2. The outdoor unit automatic dust removal control method of claim 1, wherein the Δ P is a function of the Δ PhAnd TalControlling the outer machine fan to rotate reversely under the corresponding wind gear to remove dust; the method comprises the following steps:
the T isalAt the same time, the Δ PhThe larger the reverse gear of the outer machine fan is controlled.
3. The outdoor unit automatic dust removal control method of claim 1, wherein the Δ P is a function of the Δ PhAnd said TalControlling the outer machine fan to rotate reversely under the corresponding wind gear to remove dust; the method comprises the following steps:
at TalAt the temperature of more than or equal to 30 ℃;
if d < Δ PhE, controlling the outer fan to 1/2 (S)min+Smax) Gear reversal dedusting;
or, Δ PhE or more, controlling the outer fan to 1/2 (S)mid+Smax) Gear reversal dust removal;
wherein d is more than or equal to 0.5bar and less than or equal to 1 bar; e is more than or equal to 1bar and less than or equal to 2 bar; sminIs the minimum gear S of the fan of the external unitmaxIs the maximum gear position SmidIs a middle gear of the fan of the outer machine.
4. The outdoor unit automatic dust removal control method of claim 1, wherein the Δ P is a function of the Δ PhAnd said TalControlling the outer machine fan to rotate reversely under the corresponding wind gear to remove dust; the method comprises the following steps:
at TalUnder the condition of less than or equal to 20 ℃;
if c < Δ PhD is less than or equal to d, the fan of the outer machine is controlled by SminGear reversal dust removal; or the like, or, alternatively,
d＜ΔPhe, controlling the outer fan to 1/2 (S)mid+Smax) Gear reversal dust removal; or the like, or, alternatively,
ΔPhif the value is more than or equal to e, controlling the fan of the external unit to be SmaxGear reversal dust removal;
wherein c is more than or equal to 0.1bar and less than or equal to 0.5 bar; d is more than or equal to 0.5bar and less than or equal to 1 bar; e is more than or equal to 1bar and less than or equal to 2 bar.
5. The outdoor unit automatic dust removal control method of claim 1, wherein the Δ P is based on the control signalhAnd said TalControlling the outer machine fan to rotate reversely under the corresponding wind gear to remove dust; the method comprises the following steps:
t is more than or equal to 20 DEG CalUnder the condition of less than or equal to 30 ℃;
if c < Δ PhD is less than or equal to d, the fan of the outer machine is controlled by SminGear reversal dust removal; or the like, or, alternatively,
d＜ΔPhe is less than or equal to e, the fan of the external machine is controlled by SmidGear reversal dust removal; or the like, or, alternatively,
ΔPhe is greater than or equal to e, thenControlling the outer unit fan to SmaxGear reversal dust removal;
wherein c is more than or equal to 0.1bar and less than or equal to 0.5 bar; d is more than or equal to 0.5bar and less than or equal to 1 bar; e is more than or equal to 1bar and less than or equal to 2 bar.
6. The outdoor unit automatic dust removal control method of claim 1, wherein the unit is stably operated in a current state; the method comprises the following steps:
monitoring the running state of the unit to be the current state; wherein the current state comprises an external ambient temperature value TalThe number N of indoor units in the starting stateon；
And monitoring that the running time of the unit for keeping the current state is at least H.
7. The outdoor unit automatic dust removal control method of claim 1, wherein an initial unit pressure value P at which the unit stably operates in a current state is obtainednThe method comprises the following steps:
searching whether an initial unit pressure value P corresponding to the current state exists in a state pressure gauge or notn
When present, directly reading the P in the status gaugen；
When the pressure value P does not exist, the unit continues to operate in the current state, and the pressure value of the unit is obtained within a preset time length and is used as the pressure value PnAnd the current state and the P are combinednAnd writing the state pressure gauge.
8. An automatic dust removal control device for an outdoor unit, which is used for executing the automatic dust removal control method for the outdoor unit according to any one of claims 1 to 7; the automatic dust removal control device of the outdoor unit comprises:
an obtaining module, configured to obtain an initial unit pressure value P when the unit stably operates in a current staten；
A monitoring module for controlling the unit to continuously keep the current state running, and obtaining the current unit pressure value P and the external environment temperature value T through monitoringal；
A control module for controlling the power supply according to the P and the PnDifference value of (1), the external ambient temperature value TalAnd controlling the fan of the external machine to reversely rotate by different windshields for dust removal.
9. An air conditioner comprising a readable storage medium storing a computer program and a package IC electrically connected to the readable storage medium, wherein when the computer program is read by the package IC and executed, the air conditioner implements the automatic dust removal control method of the outdoor unit according to any one of claims 1 to 7.
CN202110479318.2A 2021-04-30 2021-04-30 Automatic dust removal control method and device for outdoor unit and air conditioner Active CN113048621B (en)

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