CN111023268A - Multi-split air conditioner and self-cleaning control method thereof - Google Patents
Multi-split air conditioner and self-cleaning control method thereof Download PDFInfo
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- CN111023268A CN111023268A CN201911381063.5A CN201911381063A CN111023268A CN 111023268 A CN111023268 A CN 111023268A CN 201911381063 A CN201911381063 A CN 201911381063A CN 111023268 A CN111023268 A CN 111023268A
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
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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
- F24F11/32—Responding to malfunctions or emergencies
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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
- F24F11/62—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
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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
- F24F11/77—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
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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
- F24F11/88—Electrical aspects, e.g. circuits
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/30—Velocity
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- 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
Abstract
The invention provides a multi-split air conditioner and a self-cleaning control method thereof, and relates to the technical field of air conditioner assembly. The control method of the multi-split self-cleaning system comprises the following steps: monitoring an air inlet side air speed value F1 and an air outlet side air speed value F2 of each indoor unit in real time; and judging whether the indoor units start self-cleaning or not according to the air inlet side air speed value F1 and the air outlet side air speed value F2 of each indoor unit. Not only can carry out the automatically cleaning, in time clear up the accumulational dust in surface of many online, impurity guarantees the heat exchange efficiency of heat exchanger, avoids breeding the bacterium again, produces the peculiar smell, guarantees to sound the air quality and the user health of indoor environment. Meanwhile, the situation that only one indoor unit can be started for self-cleaning is avoided, multiple indoor units can be flexibly controlled for self-cleaning according to actual conditions, self-cleaning efficiency is improved, meanwhile, the situation that all indoor units can be started for self-cleaning only in the lump is avoided, and low-voltage protection is prevented from being triggered.
Description
Technical Field
The invention relates to the technical field of air conditioner assembly, in particular to a multi-split air conditioner and a self-cleaning control method thereof.
Background
At present, with the maturity of the central air-conditioning technology, the central air-conditioning is dedicated by the original market and hospital, and gradually enters the families of common people.
The central air conditioner can be matched with a plurality of indoor units only by one outdoor unit, so the central air conditioner is also called as a multi-split air conditioner, and the storage space of the outdoor unit is greatly saved; meanwhile, the central air-conditioning indoor unit can be mostly arranged in the suspended ceiling in a hidden manner, so that the indoor appearance is more attractive, and meanwhile, the indoor space can be saved. The household central air conditioner becomes the first choice of many new buildings and young people.
With the increasing requirements of people on health and air quality, the air conditioner serving as a common household appliance needs to achieve the effects of refrigeration and heating and also needs to provide clean and clean air beneficial to human health. Because central air conditioning indoor set generally installs in the furred ceiling, to the user, the mounted position is higher, difficult to clean, and some dust, impurity can be piled up on the coil pipe surface of indoor set heat exchanger, if not in time clear up, both influence the heat exchange efficiency of heat exchanger, breed the bacterium again easily, make the air conditioner produce the peculiar smell, influence the air quality of indoor environment, influence the user health even.
Therefore, a multi-split air conditioner with self-cleaning function is needed.
Disclosure of Invention
The invention solves the problem that some dust and impurities are accumulated on the surface of the existing multi-split air conditioner, and if the multi-split air conditioner is not cleaned in time, the heat exchange efficiency of a heat exchanger is influenced, bacteria are easy to breed, peculiar smell is generated, the air quality of the indoor environment is influenced, and even the health of a user is influenced.
In order to solve the above problems, the present invention provides a control method for multi-online self-cleaning, comprising:
monitoring an air inlet side air speed value F1 and an air outlet side air speed value F2 of each indoor unit in real time;
and judging whether the indoor units start self-cleaning or not according to the air inlet side air speed value F1 and the air outlet side air speed value F2 of each indoor unit.
Therefore, whether each indoor unit starts self-cleaning can be judged according to the air inlet side air speed value F1 and the air outlet side air speed value F2 of each indoor unit, the number of the self-cleaning indoor units is determined according to the air inlet side air speed value F1 and the air outlet side air speed value F2 of each indoor unit, the situation that only one indoor unit can be started to perform self-cleaning is avoided, multiple indoor units can be flexibly controlled to perform self-cleaning according to actual conditions, self-cleaning efficiency is improved, meanwhile, the situation that all indoor units can be started to perform self-cleaning only together is avoided, and low-voltage protection is avoided being triggered.
Further, the step of determining whether the indoor units start self-cleaning according to the air inlet side air speed value F1 and the air outlet side air speed value F2 of each indoor unit includes:
calculating a wind speed difference △ FN and a wind speed attenuation Gamma N of each indoor unit according to the wind inlet side wind speed value F1 and the wind outlet side wind speed value F2 of each indoor unit;
and judging whether the indoor units start self-cleaning or not according to the wind speed difference △ FN and the wind speed attenuation value gamma N of each indoor unit.
Therefore, an air outlet speed difference △ FN and an air outlet speed attenuation value Gamma N are calculated according to the air inlet side air speed value F1 and the air outlet side air speed value F2, the larger the air speed difference △ FN and the air speed attenuation value Gamma N is, the higher the dirty blockage degree of a heat exchanger of the indoor unit is, namely, the higher the unit dust deposition degree is, and therefore, whether the indoor unit starts self-cleaning or not is judged according to the air speed difference △ FN and the air speed attenuation value Gamma N, and the indoor unit can be accurately determined to need self-cleaning.
Further, the step of determining whether the indoor units start self-cleaning according to the wind speed difference △ FN and the wind speed attenuation value γ N of each indoor unit includes:
if any indoor unit firstly meets △ FN (equal to or more than △ F preset value) and gamma N is equal to or more than gamma preset value, the indoor unit starts self-cleaning.
Therefore, according to the actual application scene of the multi-split air conditioner, the corresponding △ F preset value and gamma preset value are set, and whether the indoor unit is seriously clogged or not and whether self-cleaning is needed or not can be accurately judged.
Further, if the ratio of △ FN is more than or equal to △ F preset value and gamma N is more than or equal to gamma preset value, the self-cleaning starting step of the indoor unit comprises the following steps:
if the remaining indoor units meet the following conditions: and if the gamma N is larger than or equal to 1/2 gamma preset value or the gamma N is larger than or equal to 10%, the indoor unit is remained to start self-cleaning.
Therefore, if the residual indoor units are dirty and blocked to the general degree, the residual indoor units are controlled to start self-cleaning, and the cleaning efficiency is improved.
Further, the step of determining whether the indoor units start self-cleaning according to the air inlet side air speed value F1 and the air outlet side air speed value F2 of each indoor unit includes:
presetting the number N of the indoor units starting self-cleaning;
and starting N indoor units for self-cleaning according to the air inlet side air speed value F1 and the air outlet side air speed value F2 of each indoor unit.
In this way, in order to ensure cleaning efficiency and avoid triggering low-voltage protection, the number N of the indoor units starting self-cleaning is preset, and then the N indoor units are synchronously started for self-cleaning each time according to the air inlet side air speed value F1 and the air outlet side air speed value F2 of each indoor unit.
Further, the step of starting N indoor units to perform self-cleaning according to the air inlet side air speed value F1 and the air outlet side air speed value F2 of each indoor unit includes:
calculating a wind speed difference △ FN and a wind speed attenuation Gamma N of each indoor unit according to the wind inlet side wind speed value F1 and the wind outlet side wind speed value F2 of each indoor unit;
and starting N indoor units to carry out self-cleaning according to the wind speed difference △ FN and the wind speed attenuation value gamma N of each indoor unit.
Therefore, according to the air inlet side air speed value F1 and the air outlet side air speed value F2, an air outlet speed difference △ FN and an air speed attenuation value Gamma N are calculated, and then N indoor units are started to carry out self-cleaning according to the air speed difference △ FN and the air speed attenuation value Gamma N, so that the indoor units which need to carry out self-cleaning can be accurately determined.
Further, the step of starting N indoor units to perform self-cleaning according to the wind speed difference △ FN and the wind speed attenuation value γ N of each indoor unit includes:
when the priority of any indoor unit meets △ FN (FN) is more than or equal to △ F preset value and gamma N is more than or equal to gamma preset value, the indoor unit starts self-cleaning;
and selecting (N-1) indoor units with the maximum gamma N from the rest indoor units to start self-cleaning.
Therefore, according to the actual application scene of the multi-split air conditioner, the corresponding △ F preset value and gamma preset value are set, whether the indoor unit is seriously clogged or not and whether self-cleaning is needed or not can be accurately judged, and the cleaning effect is improved.
Further, the wind speed difference △ FN meets the requirements of △ FN ═ F1-F2.
Further, the wind speed attenuation value gamma N satisfies the condition that gamma N is △ FN/F1.
In order to solve the above problems, the present invention also provides a multi-split air conditioner, including:
the air speed sensor is used for monitoring an air inlet side air speed value F1 and an air outlet side air speed value F2 of each indoor unit in real time;
and the controller is used for judging whether the indoor units start self-cleaning or not according to the air inlet side air speed value F1 and the air outlet side air speed value F2 of each indoor unit.
Therefore, the multi-split air conditioner can avoid that only one indoor unit can be simply started to carry out self-cleaning, can flexibly control a plurality of indoor units to carry out self-cleaning according to actual conditions, improves the self-cleaning efficiency, and simultaneously avoids that all the indoor units can be simply started together to carry out self-cleaning, and avoids triggering low-voltage protection.
Drawings
Fig. 1 is a block diagram of a multi-split air conditioner according to a first embodiment of the present invention.
Fig. 2 is a flowchart of a control method for multi-split self-cleaning according to a first embodiment of the present invention.
Fig. 3 is a flowchart of a control method for multi-split self-cleaning according to a second embodiment of the present invention.
Description of reference numerals:
1-multi-split air-conditioning system; 2-a controller; 3-a wind speed sensor; 4-indoor unit.
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.
Because the indoor set of many online is generally installed in the furred ceiling, to the user, the mounted position is higher, difficult to clean, and some dust, impurity can be piled up on the coil pipe surface of the heat exchanger of indoor set, if not in time clear up, both influence the heat exchange efficiency of heat exchanger, breed the bacterium again easily, make the air conditioner produce the peculiar smell, influence the air quality of indoor environment, influence the user health even.
Because the multi-split air conditioner is formed by matching one outdoor unit with a plurality of indoor units, when the indoor units are required to be self-cleaned, if self-cleaning is started at the same time, the low pressure on the outdoor side is too low, so that the starting low-pressure protection of the unit is easily caused, and the self-cleaning action is stopped. Therefore, how to better control the indoor units to perform self-cleaning in order is a task that needs to be completed urgently.
First embodiment
Referring to fig. 1, the embodiment provides a multi-split air conditioner 1, where the multi-split air conditioner 1 includes a controller 2 and a plurality of indoor units 4, the number of the indoor units 4 is greater than 1, and 3 to 5 indoor units 4 may be provided. Each indoor unit 4 is provided with an air speed sensor 3, and the air speed sensor 3 is used for monitoring an air inlet side air speed value F1 and an air outlet side air speed value F2 of each indoor unit 4 in real time; the controller 2 is configured to determine whether the indoor units 4 start self-cleaning according to the air inlet side air speed value F1 and the air outlet side air speed value F2 of each indoor unit 4.
Referring to fig. 2, based on the multi-split air conditioner 1, the present embodiment further provides a method for controlling self-cleaning of the multi-split air conditioner, including the following steps:
s11: and monitoring the air inlet side air speed value F1 and the air outlet side air speed value F2 of each indoor unit 4 in real time.
The wind speed sensor 3 monitors the wind speed value F1 at the air inlet side and the wind speed value F2 at the air outlet side in real time, and transmits the values to the controller 2 in time, and the controller 2 processes the received data and sends a control instruction.
Next, the controller 2 determines whether the indoor units 4 start self-cleaning according to the air inlet side air speed value F1 and the air outlet side air speed value F2 of each indoor unit 4, which is as follows:
and S12, calculating the wind speed difference △ FN and the wind speed attenuation value Gamma N of each indoor unit 4 according to the wind inlet side wind speed value F1 and the wind outlet side wind speed value F2 of each indoor unit 4.
Wherein, the wind speed difference △ FN satisfies △ FN-F1-F2. wind speed attenuation value Gamma N satisfies gamma N- △ FN/F1.
Therefore, the air outlet speed difference △ FN and the air speed attenuation gamma N are calculated according to the air inlet side air speed value F1 and the air outlet side air speed value F2, the larger the air speed difference △ FN and the air speed attenuation gamma N are, the higher the dirty blockage degree of the heat exchanger of the indoor unit 4 is, namely the higher the ash deposition degree of the unit is, and therefore whether the indoor unit 4 starts self-cleaning or not is judged according to the air speed difference △ FN and the air speed attenuation gamma N, and the indoor units 4 which need self-cleaning can be accurately determined.
Next, the controller 2 determines whether the indoor units 4 start self-cleaning according to the wind speed difference △ FN and the wind speed attenuation γ N of each indoor unit 4, specifically as follows:
s13, if any indoor unit 4 firstly meets the preset value △ FN is more than or equal to △ F, and gamma N is more than or equal to gamma preset value, the indoor unit 4 starts self-cleaning.
Thus, according to the actual operation scene of the multi-split air conditioner, the corresponding △ F preset value and gamma preset value are set, and whether the indoor unit 4 is seriously clogged or not and whether self-cleaning is needed or not can be accurately judged.
Specifically, the △ F preset value is experimentally measured, and due to the influence of various factors such as the specification of a heat exchanger, the type of a unit and the like, the △ F preset value can be flexibly set according to specific conditions, the preferred range of the gamma preset value is 20% -40%, in general, only 1 indoor unit 4 preferentially meets the condition in S13, and therefore, the condition that the number of the units meeting the condition is greater than 1 is not discussed here.
S14: if the remaining indoor units 4 satisfy: the gamma N is more than or equal to 1/2 gamma preset value or the gamma N is more than or equal to 10 percent, the residual indoor units 4 start self-cleaning.
In order to ensure the self-cleaning efficiency of the unit, S13 and S14 are performed to synchronously determine the wind speed attenuation rate of other indoor units 4, and if the remaining indoor units 4 reach the condition in S14, the remaining indoor units 4 are determined to be dirty and blocked, and the remaining indoor units 4 are controlled to start self-cleaning, so that the cleaning efficiency is improved.
It should be noted that when △ FN is not less than △ F preset value, and γ N is not less than γ preset value, it is determined that the unit is seriously clogged, and self-cleaning is urgently needed, but if self-cleaning is performed only for one of the units at the time, the cleaning efficiency is not high, therefore, the wind speed attenuation rate of other units is synchronously determined, if the γ N is not less than 1/2 γ preset value or γ N is not less than 10%, it is determined that the degree of filth blockage is general, and self-cleaning is performed synchronously with the indoor unit 4 seriously clogged, so as to improve the cleaning efficiency.
The multi-split air conditioner and the self-cleaning control method thereof have the beneficial effects that:
whether each indoor unit 4 starts self-cleaning can be judged according to the air inlet side air speed value F1 and the air outlet side air speed value F2 of each indoor unit 4, the number of the indoor units 4 which start self-cleaning is determined according to the air inlet side air speed value F1 and the air outlet side air speed value F2 of each indoor unit 4, the situation that only one indoor unit 4 can be started to carry out self-cleaning is avoided, multiple indoor units 4 can be flexibly controlled to carry out self-cleaning according to actual conditions, self-cleaning efficiency is improved, meanwhile, the situation that all indoor units 4 can be started to carry out self-cleaning only in one time is avoided, and low-voltage protection.
Second embodiment
Referring to fig. 3, based on the multi-split air conditioner 1 of the first embodiment, the present embodiment further provides a control method for self-cleaning of the multi-split air conditioner, which is different from the control method of the first embodiment in that the number N of the indoor units 4 for starting self-cleaning is preset in the control method of the present embodiment, and the method specifically includes the following steps:
s21: and monitoring the air inlet side air speed value F1 and the air outlet side air speed value F2 of each indoor unit 4 in real time.
S22: the number N of indoor units 4 that start self-cleaning is preset.
In this way, in order to ensure the cleaning efficiency and avoid triggering low-voltage protection, the number N of the indoor units 4 for starting self-cleaning is preset, and then the N indoor units 4 are synchronously started for self-cleaning each time according to the air inlet side air speed value F1 and the air outlet side air speed value F2 of each indoor unit 4.
The order of S21 and S22 is not critical, and either step may be performed before or simultaneously.
Next, the controller 2 starts the N indoor units 4 to perform self-cleaning according to the air inlet side air speed value F1 and the air outlet side air speed value F2 of each indoor unit 4, which is specifically as follows:
and S23, calculating the wind speed difference △ FN and the wind speed attenuation value Gamma N of each indoor unit 4 according to the wind inlet side wind speed value F1 and the wind outlet side wind speed value F2 of each indoor unit 4.
Wherein, the wind speed difference △ FN satisfies △ FN-F1-F2. wind speed attenuation value Gamma N satisfies gamma N- △ FN/F1.
Therefore, the air outlet speed difference △ FN and the air speed attenuation gamma N are calculated according to the air inlet side air speed value F1 and the air outlet side air speed value F2, and then the N indoor units 4 are started to carry out self-cleaning according to the air speed difference △ FN and the air speed attenuation gamma N, so that the indoor units 4 which need to be self-cleaned can be accurately determined.
Next, the controller 2 starts the N indoor units 4 to perform self-cleaning according to the wind speed difference △ FN and the wind speed attenuation γ N of each indoor unit 4, which are as follows:
s24, if any indoor unit 4 meets the preset value △ FN is more than or equal to △ F and gamma N is more than or equal to gamma preset value, the indoor unit 4 starts self-cleaning.
S25: and (N-1) indoor units 4 with the maximum gamma N are selected from the rest indoor units 4 to start self-cleaning.
Therefore, according to the actual application scene of the multi-split air conditioner, the corresponding △ F preset value and gamma preset value are set, whether the indoor unit 4 is seriously clogged or not and whether self-cleaning is needed or not can be accurately judged, and the cleaning effect is improved.
For example, if N is 2, any indoor unit 4 firstly meets the preset value of △ FN being greater than or equal to △ F, and γ N being greater than or equal to γ preset value, the indoor unit 4 starts self-cleaning, and one indoor unit 4 with the largest γ N among the remaining indoor units 4 starts self-cleaning, so that one indoor unit 4 meeting the condition in S24 starts self-cleaning, and one indoor unit 4 with the largest γ N among the remaining indoor units 4 starts self-cleaning, that is, two indoor units 4 perform self-cleaning.
The embodiment also provides a multi-split air conditioner 1, and the multi-split air conditioner 1 adopts the multi-split air conditioner self-cleaning control method.
The multi-split air conditioner 1 and the self-cleaning control method thereof provided by the embodiment of the invention can not only carry out self-cleaning, clean dust and impurities accumulated on the surface of the multi-split air conditioner 1 in time, ensure the heat exchange efficiency of the heat exchanger, but also avoid bacteria breeding and peculiar smell generation, and ensure the air quality and user health which affect the indoor environment. Meanwhile, the situation that only one indoor unit 4 can be started for self-cleaning is avoided, multiple indoor units 4 can be flexibly controlled for self-cleaning according to actual conditions, self-cleaning efficiency is improved, meanwhile, the situation that all indoor units 4 can be started for self-cleaning only together is also avoided, and low-voltage protection is prevented from being triggered.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
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 (10)
1. A control method for multi-online self-cleaning is characterized by comprising the following steps:
monitoring an air inlet side air speed value F1 and an air outlet side air speed value F2 of each indoor unit in real time;
and judging whether the indoor units start self-cleaning or not according to the air inlet side air speed value F1 and the air outlet side air speed value F2 of each indoor unit.
2. The multi-online self-cleaning control method according to claim 1, wherein the step of determining whether the indoor units start self-cleaning according to the air inlet side air speed value F1 and the air outlet side air speed value F2 of each indoor unit comprises:
calculating a wind speed difference △ FN and a wind speed attenuation Gamma N of each indoor unit according to the wind inlet side wind speed value F1 and the wind outlet side wind speed value F2 of each indoor unit;
and judging whether the indoor units start self-cleaning or not according to the wind speed difference △ FN and the wind speed attenuation value gamma N of each indoor unit.
3. The multi-online self-cleaning control method according to claim 2, wherein the step of determining whether the indoor units start self-cleaning according to the wind speed difference △ FN and the wind speed attenuation γ N of each indoor unit comprises:
if any indoor unit firstly meets △ FN (equal to or more than △ F preset value) and gamma N is equal to or more than gamma preset value, the indoor unit starts self-cleaning.
4. The multi-online self-cleaning control method as claimed in claim 3, wherein if any indoor unit firstly meets △ FN ≥ △ F preset value and γ N ≥ γ preset value, the step of starting self-cleaning by the indoor unit comprises:
if the remaining indoor units meet the following conditions: and if the gamma N is larger than or equal to 1/2 gamma preset value or the gamma N is larger than or equal to 10%, the indoor unit is remained to start self-cleaning.
5. The multi-online self-cleaning control method according to claim 1, wherein the step of determining whether the indoor units start self-cleaning according to the air inlet side air speed value F1 and the air outlet side air speed value F2 of each indoor unit comprises:
presetting the number N of the indoor units starting self-cleaning;
and starting N indoor units for self-cleaning according to the air inlet side air speed value F1 and the air outlet side air speed value F2 of each indoor unit.
6. The multi-online self-cleaning control method according to claim 5, wherein the step of starting N indoor units to perform self-cleaning according to the air inlet side air speed value F1 and the air outlet side air speed value F2 of each indoor unit comprises the following steps:
calculating a wind speed difference △ FN and a wind speed attenuation Gamma N of each indoor unit according to the wind inlet side wind speed value F1 and the wind outlet side wind speed value F2 of each indoor unit;
and starting N indoor units to carry out self-cleaning according to the wind speed difference △ FN and the wind speed attenuation value gamma N of each indoor unit.
7. The multi-online self-cleaning control method according to claim 6, wherein the step of starting N indoor units to perform self-cleaning according to the wind speed difference △ FN and the wind speed attenuation γ N of each indoor unit comprises:
when the priority of any indoor unit meets △ FN (FN) is more than or equal to △ F preset value and gamma N is more than or equal to gamma preset value, the indoor unit starts self-cleaning;
and selecting (N-1) indoor units with the maximum gamma N from the rest indoor units to start self-cleaning.
8. The multi-online self-cleaning control method as claimed in claim 2 or 6, wherein the wind speed difference △ FN satisfies △ FN-F1-F2.
9. The multi-online self-cleaning control method according to claim 8, wherein the wind speed attenuation value γ N is △ FN/F1.
10. A multi-split air conditioner, comprising:
the air speed sensor (3) is used for monitoring the air inlet side air speed value F1 and the air outlet side air speed value F2 of each indoor unit (4) in real time;
and the controller (2) is used for judging whether the indoor units (4) start self-cleaning or not according to the air inlet side air speed value F1 and the air outlet side air speed value F2 of each indoor unit (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911381063.5A CN111023268B (en) | 2019-12-27 | 2019-12-27 | Multi-split air conditioner and self-cleaning control method thereof |
Applications Claiming Priority (1)
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| CN201911381063.5A CN111023268B (en) | 2019-12-27 | 2019-12-27 | Multi-split air conditioner and self-cleaning control method thereof |
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| CN114216203A (en) * | 2021-12-16 | 2022-03-22 | 珠海格力电器股份有限公司 | Self-cleaning control method of multi-split air conditioner and multi-split air conditioner |
| CN114251807A (en) * | 2021-12-01 | 2022-03-29 | 海信（广东）空调有限公司 | Self-cleaning control method of air conditioner, air conditioner and computer readable storage medium |
| CN114353258A (en) * | 2021-12-06 | 2022-04-15 | 青岛海尔空调电子有限公司 | Air conditioner evaporator detection method, storage medium and air conditioner |
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