CN110230857A - Multi-split air conditioner and its automatically cleaning control method - Google Patents
Multi-split air conditioner and its automatically cleaning control method Download PDFInfo
- Publication number
- CN110230857A CN110230857A CN201910497806.9A CN201910497806A CN110230857A CN 110230857 A CN110230857 A CN 110230857A CN 201910497806 A CN201910497806 A CN 201910497806A CN 110230857 A CN110230857 A CN 110230857A
- Authority
- CN
- China
- Prior art keywords
- indoor unit
- control method
- air conditioner
- automatically cleaning
- indoor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- F24F11/41—Defrosting; Preventing freezing
-
- 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
- F24F11/62—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
- F24F11/65—Electronic processing for selecting an operating mode
-
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
-
- 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
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0003—Exclusively-fluid systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Thermal Sciences (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Fluid Mechanics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention relates to air-conditioning technique fields, and in particular to a kind of multi-split air conditioner and its automatically cleaning control method.Specifically, multi-split air conditioner of the invention includes outdoor unit and indoor units, indoor units include the first indoor unit and at least one second indoor unit, the automatically cleaning control method of multi-split air conditioner of the invention includes: so that the first indoor unit is executed automatically cleaning mode in the case of all indoor units of air conditioner are in cooling condition；Close the corresponding electric expansion valve of the second indoor unit.Control method of the invention is by closing the electric expansion valve of the second indoor unit, it, so, can be fuller with the first indoor unit frosting to guarantee there is sufficient refrigerant to recycle in the pipe-line system of the first indoor unit, it is more preferable to the removing scouring effect of dust dirt, improve self-cleaning effect.
Description
Technical field
The present invention relates to air-conditioning technique fields, and in particular to a kind of multi-split air conditioner and its automatically cleaning controlling party
Method.
Background technique
In the air conditioner course of work, air and indoor set heat exchanger carry out heat exchange, empty due to containing dust in air
Dust in gas would also adhere to heat exchanger.With the long-time service of air conditioner, dust can be deposited on indoor unit.On heat exchanger
Dust accumulation will seriously will affect the heat transfer effect of heat exchanger, while can also breed a large amount of bacterium, and especially air flows through room indoors
When interior machine, air can carry dust and bacterium blows to the interior space, to bring threat to user health.In consideration of it, needs pair
Air conditioner is cleaned in time, and the air conditioner of the prior art often cleans indoor unit by way of running automatically cleaning mode
To play the clean purpose of scale removal.
As comfort requirement of the people to environment temperature is higher and higher, multi-split air conditioner is widely used.One drag it is more
Air conditioner is that more indoor units are connected by an outdoor unit, and more indoor units are located in different indoor environments, to save
Outer machine space and the air conditioning requirements for meeting multiple rooms simultaneously.It is contemplated that the coolant quantity of multi-split air conditioner is limited,
When more indoor units enter automatically cleaning mode simultaneously, it be easy to cause the self-cleaning effect of more indoor units bad, it can not be thorough
Realize the cleaning of indoor unit.
Correspondingly, this field needs a kind of automatically cleaning control program of new multi-split air conditioner to solve the above problems.
Summary of the invention
In order to solve the above problem in the prior art, i.e., existing multi-split air conditioner causes since coolant quantity is limited
The bad problem of self-cleaning effect in the case of more indoor units enter automatically cleaning simultaneously, on the one hand, the present invention provides one
The automatically cleaning control method of kind multi-split air conditioner, the multi-split air conditioner includes outdoor unit and indoor units, the interior
Unit includes the first indoor unit and at least one second indoor unit, and the control method includes:
In the case of all indoor units of the multi-split air conditioner are in cooling condition, make first indoor unit
Execute automatically cleaning mode；Close the corresponding electric expansion valve of second indoor unit.
In the optimal technical scheme of above-mentioned control method, the control method includes: corresponding in second indoor unit
Electric expansion valve close in the case of, cut off the communication of second indoor unit and the outdoor unit.
In the optimal technical scheme of above-mentioned control method, the control method includes: corresponding in second indoor unit
Electric expansion valve close in the case of, make the blower of second indoor unit with the corresponding electronic expansion of second indoor unit
Rotation speed operation before valve closing.
In the optimal technical scheme of above-mentioned control method, the automatically cleaning mode includes frosting stage and defrost stage,
Wherein, in the frosting stage, the blower of first indoor unit is remained turned-off, and makes the coil temperature of first indoor unit not
Lower than temperature threshold；In the defrost stage, run the blower of first indoor unit with setting speed.
In the optimal technical scheme of above-mentioned control method, the range of the temperature threshold is -12 DEG C to -14 DEG C, and/
Or the value range of the setting speed is 400r/min to 500r/min.
In the optimal technical scheme of above-mentioned control method, in the defrost stage, make the compression organ of the outdoor unit
It closes；And the electronic expansion valve opening of first indoor unit is adjusted to maximum opening.
In the optimal technical scheme of above-mentioned control method, after first indoor unit enters the frosting stage, in institute
State the coil temperature of the first indoor unit within the set time continuously less than set temperature is equal in the case of, make described first indoor
Machine enters the defrost stage.
In the optimal technical scheme of above-mentioned control method, the quantity of the set temperature is multiple, each setting
Temperature correspond to a setting time, first indoor unit coil temperature continuously less than be equal to any set temperature time
In the case of reaching its corresponding setting time, first indoor unit is made to enter the defrost stage.
In the optimal technical scheme of above-mentioned control method, after first indoor unit enters the frosting stage, in institute
State the first indoor unit frosting runing time reach time threshold in the case of, so that first indoor unit is entered the defrost stage,
Wherein, the value range of the time threshold is 10 to 11 minutes.
The automatically cleaning control method of multi-split air conditioner of the invention passes through the first Room for making to receive automatically cleaning signal at first
Interior machine enters automatically cleaning mode, and makes remaining indoor unit in all indoor units of air conditioner in addition to the first indoor unit, i.e.,
The aperture of the corresponding electric expansion valve of second indoor unit is to zero, to guarantee have sufficient refrigerant in the pipeline system of the first indoor unit
It is recycled in system, so, the first indoor unit frosting also can be fuller, rushes to the removing of the dust dirt on the first indoor unit
Brush degree is higher, so as to realize more preferably self-cleaning effect.
In the preferred technical solution of the present invention, in the case of the corresponding electric expansion valve of the second indoor unit is closed, in
The communication of disconnected second indoor unit and outdoor unit.In this case, outdoor unit will be always according to automatically cleaning mode operation, no
It will receive the influence for the user instruction that the second indoor unit receives, to further ensure the automatically cleaning effect of the first indoor unit
Fruit.In addition, running the blower of the second indoor unit according to corresponding wind speed setting, so, even if flowing through without refrigerant
Two indoor units, the second indoor unit can guarantee the comfort level of the user in its corresponding interior space by way of air-supply.
On the other hand, the present invention also provides a kind of multi-split air conditioner, the multi-split air conditioner includes controller, institute
Controller is stated for executing the automatically cleaning control method of above-mentioned multi-split air conditioner.Multi-split air conditioner of the invention has aforementioned
Automatically cleaning control method all technical effects, details are not described herein.
Detailed description of the invention
The automatically cleaning control method of multi-split air conditioner of the invention described with reference to the accompanying drawings.In attached drawing:
Fig. 1 is a kind of flow diagram of the automatically cleaning control method of the multi-split air conditioner of embodiment of the invention.
Specific embodiment
The preferred embodiment of the present invention described with reference to the accompanying drawings.It will be apparent to a skilled person that this
A little embodiments are used only for explaining technical principle of the invention, it is not intended that limit the scope of the invention.For example, although
Describe each step of method of the invention in the application according to particular order, but these be not sequentially it is restrictive,
Under the premise of without departing from basic principle of the invention, those skilled in the art can execute the step in a different order
Suddenly.
It should be noted that in the description of the present invention, term " center ", "upper", "lower", "left", "right", "vertical",
The direction of the instructions such as "horizontal", "inner", "outside" or the term of positional relationship are direction based on the figure or positional relationship, this
It is intended merely to facilitate description, rather than indication or suggestion described device or element must have a particular orientation, with specific
Orientation construction and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second " are only used for describing
Purpose is not understood to indicate or imply relative importance.
In addition it is also necessary to explanation, in the description of the present invention unless specifically defined or limited otherwise, term " peace
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.To those skilled in the art, it can understand that above-mentioned term exists as the case may be
Concrete meaning in the present invention.
Multi-split air conditioner of the invention includes outdoor unit and multiple indoor units, wherein outdoor unit and multiple indoor units connect
It connects and multiple indoor units is located at the different interior spaces.Indoors after machine operation a period of time, it can sink on the heat exchanger of indoor unit
The many dust dirts of product, not only influence the heat transfer effect of heat exchanger, are also easy to breed bacterium, to influence the health of user.It is existing
Some multi-split air conditioners, which generally use, makes indoor unit enter automatically cleaning mode to realize the self-cleaning of indoor unit, specifically, makes
The frosting of indoor unit elder generation, then defrost, the condensed water generated when using defrost take away the dust and dirt of heat exchanger surface.But in multiple interiors
It is limited since the coolant quantity of multi-split air conditioner is limited when machine receives automatically cleaning signal and enters automatically cleaning mode
The frosting degree that refrigerant is likely to result in the heat exchanger of multiple indoor units is insufficient, so that self-cleaning effect be made to substantially reduce.
In view of the above-mentioned problems, the invention proposes a kind of automatically cleaning control methods of multi-split air conditioner, and referring to Fig.1, Fig. 1
For a kind of flow diagram of the automatically cleaning control method of the multi-split air conditioner of embodiment of the invention.As shown in Figure 1, this hair
Bright control method specifically includes that
Step S10: in the case of multi-split air conditioner is in cooling condition, the first indoor unit is made to execute automatically cleaning mould
Formula.
Under general scenario, the first indoor unit be air conditioner all indoor units in be initially received the interior of automatically cleaning signal
Machine.
Step S20: close the corresponding electric expansion valve of the second indoor unit.
What needs to be explained here is that the second indoor unit is not pointing at specific a certain indoor unit, but in generation, refers to air conditioner
All indoor units in indoor unit in addition to the first indoor unit, the quantity of the second indoor unit can be one or more, need
It to be determined according to the quantity of the indoor unit of multi-split air conditioner, that is to say, that in the quantity of the indoor unit of multi-split air conditioner
When for N, first indoor unit is removed, the quantity of the second indoor unit is N-1.This corresponding electric expansion valve of N-1 platform indoor unit
It is required to close.As an example, one to drag three air conditioners include outdoor unit, indoor unit A, indoor unit B and indoor unit C,
In, in three indoor units, indoor unit A is initially received automatically cleaning signal, and indoor unit A is the first indoor unit, elder generation at this time
Execute automatically cleaning mode.Indoor unit B and indoor unit C is the second indoor unit, before machine A executes automatically cleaning mode indoors/same
When/later, indoor unit B and the corresponding electric expansion valve of indoor unit C are closed, cold at this time even if the aperture of electric expansion valve is to zero
Matchmaker is only capable of entering the room machine A, and cannot be introduced into indoor unit B and C.
In addition it is also necessary to explanation, although above-mentioned steps S10 to S20 is certainly clear according to first entering the first indoor unit
Then clean mode makes organ in second Room close electric expansion valve again, but in practical applications, two steps can be with change over order
Or occur simultaneously.
As can be seen that control method of the invention passes through the first indoor unit for making to receive automatically cleaning signal at first into from clearly
Clean mode, and make remaining indoor unit in air conditioner in addition to the first indoor unit, i.e. the corresponding electronic expansion of the second indoor unit
The aperture of valve, to guarantee have sufficient refrigerant to recycle in the pipe-line system of the first indoor unit, makes the first indoor unit to zero
Heat exchanger frosting is fuller, higher to the removing degradation degree of the grey dust and dirt on the first indoor unit, and then realizes more preferably from clear
Clean effect.
It is understood that control method of the invention is using the self-cleaning mode of separate unit indoor unit, i.e., in air conditioner
One or more indoor unit receive automatically cleaning instruction in the case of, determine that air conditioner currently executes the first of automatically cleaning mode
Then indoor unit only makes the first indoor unit of air conditioner execute automatically cleaning mode, and closes other indoor units (i.e. in second Room
Machine) electric expansion valve, to guarantee the self-cleaning effect of current the first indoor unit for executing automatically cleaning mode.Therefore, in reality
In the application of border, the first indoor unit can be understood as the indoor unit for currently executing automatically cleaning mode, can be in all indoor units
It is initially received the indoor unit of automatically cleaning signal, may otherwise be determined.As an example, one drags three air conditioners
Including outdoor unit, indoor unit A, indoor unit B and indoor unit C, wherein indoor unit A, indoor unit B and indoor unit C are according to particular order
Automatically cleaning mode is executed, when machine A executes automatically cleaning mode indoors, indoor unit A is the first indoor unit, and indoor unit B and C are second
Indoor unit；When machine A terminates automatically cleaning mode indoors, indoor unit B is taken turns in sequence and executes automatically cleaning mode, at this time indoor unit
B is the first indoor unit, and indoor unit A and C are the second indoor unit.
In a preferred embodiment, control method of the invention includes:
In the case of the corresponding electric expansion valve of the second indoor unit is closed, in the communication that makes the second indoor unit and outdoor unit
It is disconnected.
It should be noted that the communicating interrupt of the second indoor unit and outdoor unit refers to the indoor unit and outdoor unit of air-conditioning system
Normal data transfer can not be carried out, outdoor unit does not acquire indoor signal, and indoor unit does not acquire outside signal yet.Pass through
Make the communicating interrupt of the second indoor unit and outdoor unit, so that outdoor unit not will receive the operating parameter of machine or second in second Room
The influence for the user instruction that indoor unit receives, outdoor unit will be always according to automatically cleaning mode operations, to be further ensured that
The self-cleaning effect of first indoor unit.
Further, control method of the invention further include:
In the case of the corresponding electric expansion valve of the second indoor unit is closed, make the blower of the second indoor unit in second Room
Rotation speed operation before the corresponding electric expansion valve closing of machine.
Still by taking above-mentioned one drags three air conditioners as an example, one to drag three air conditioners include indoor unit A, indoor unit B and indoor unit C,
Wherein indoor unit B and indoor unit C is the second indoor unit, the situation that the corresponding electric expansion valve of machine B and indoor unit C is closed indoors
Under, so that indoor unit B/ indoor unit C is continually maintained in the revolving speed before indoor unit B/ indoor unit C closing electric expansion valve.
It is understood that in the case of the corresponding electric expansion valve of the second indoor unit is closed, the wind of the second indoor unit
The setting of the revolving speed of machine is not limited only to a kind of this above-mentioned situation, and those skilled in the art can be according to actual demand in second Room
The revolving speed of the second indoor unit in the case of the corresponding electric expansion valve of interior machine is closed flexibly is set.Such as it is used as some possibility
Embodiment in, in the case of the corresponding electric expansion valve of machine B and indoor unit C is closed indoors, indoor unit B and interior can be made
The revolving speed of machine C is no more than 500r/min, so that indoor unit B and indoor unit C be made to blow faint wind.
As can be seen that control method of the invention is by making the blower of the second indoor unit according to the corresponding electricity of the second indoor unit
Sub- expansion valve close before revolving speed operation, so, even if flowing through the second indoor unit without refrigerant, the second indoor unit can be with
Guarantee the comfort level of the user in its corresponding interior space by way of air-supply.And make the rotation speed of fan of the second indoor unit
It is always maintained at stabilization before and after electric expansion valve closing, can also guarantee the comfort of user.
In a preferred embodiment, automatically cleaning mode includes frosting stage and defrost stage, wherein in frosting rank
Section, remains turned-off the blower of the first indoor unit, and makes the coil temperature of the first indoor unit not less than temperature threshold.
It is prolonged by inventor experimental studies have found that, be lower than -12 DEG C to -14 DEG C in the coil temperature of the first indoor unit
In the case of, the frosting saturation degree on the heat exchanger of the first indoor unit is high.Given this, it is preferable that the range of temperature threshold is -12
DEG C to -14 DEG C.
Since the frosting degree of the first indoor unit is different, the automatically cleaning situation of the first indoor unit be would also vary from, and pass through
Inventor's prolonged research experiment discovery, coil temperature be consistently less than -12 DEG C it is even lower when, frosting is full on heat exchanger
With more dust dirts can be washed away in heat exchanger defrosting.Based on this, control method of the invention passes through control compression
Unit frequency and expansion valve opening are so that the coil temperature of the first indoor unit is not less than temperature threshold, to make the disk of the first indoor unit
Tube temperature degree is in lower temperature always, to guarantee that the first indoor set heat exchanger can be saturated frosting, and then improves from clear
Clean effect.It is understood that the range of temperature threshold is not limited only to -12 DEG C to -14 DEG C, it can also be other numerical value, this
Field technical staff can set temperature threshold according to application scenarios.
Further, in the defrost stage, run the blower of the first indoor unit with setting speed.
Since the electric expansion valve of the second indoor unit is in close state, if heating the first indoor unit in the defrost stage
Defrost then will lead to refrigerant at the second indoor unit and hoard.In consideration of it, control method of the invention passes through machine heat exchanger knot indoors
Frost saturation after, open the first indoor unit blower, at this time indoor environment hot-air enter the first indoor unit in and heat exchanger into
Row heat exchange, to melt the frost on heat exchanger to realize defrost purpose.
It may result in frost thawing in view of wind speed is excessive and form the problem of condensed water is blown into the interior space, it is preferable that
400r/min to 500r/min is set by the value range of the setting speed of the blower of the first indoor unit, in this rotation speed of fan
Under, the first indoor unit carries out heat exchange with the interior space in a manner of faint air-supply, so, can both guarantee defrost effect
Fruit, and effectively condensed water can be avoided to be blown into the interior space.It is understood that rotation speed of fan can also be other turns
Speed, is such as lower than 400r/min, and those skilled in the art can be rationally arranged it according to practical situation.
Preferably, in the defrost stage, the compressor of outdoor unit is closed, and opens the electric expansion valve of the first indoor unit
It spends to maximum opening.
When the first indoor unit enters the defrost stage, close compressor can make refrigerant not recirculation flow, to make
The coil temperature of one indoor unit will not reduce again, to improve defrost rate.In addition, the electric expansion valve of the first indoor unit is opened
To maximum opening, i.e., standby aperture is also convenient for further increasing defrosting effect.
In further preferred embodiment, after the first indoor unit enters the frosting stage, in the first indoor unit
In the case of operating parameter meets setting condition, the first indoor unit is made to enter the defrost stage.
Above-mentioned setting condition can be considered the decision condition of the heat exchanger frosting saturation of the first indoor unit, in above-mentioned setting condition
When reaching, i.e., in the case where the heat exchanger frosting of the first indoor unit saturation, by opening the blower of the first indoor unit, at this time the
The heat exchanger and indoor air of one indoor unit carry out heat exchange, and heat exchanger starts defrost, and the water flow of defrost takes away evaporator
On dust, to realize self-cleaning effect.
Preferably, setting condition includes:
1) coil temperature of the first indoor unit is within the set time continuously less than equal to set temperature.
2) the frosting runing time of the first indoor unit reaches time threshold.
Meet above-mentioned condition 1 in the operating parameter of the first indoor unit) to any one of 2) in the case of, make the first indoor unit
Stop frosting and opens the blower of the first indoor unit.
About condition 1), those skilled in the art can set set temperature and setting time according to actual scene
It is fixed.In practical applications, single set temperature and setting time are only set, there may be frosting and determine that accuracy is insufficient
Problem.Specifically, as an example, condition 1) in set temperature be -12 DEG C, setting time be 10 minutes.Coil temperature exists
When reaching -12 DEG C, it is even lower that coil temperature may soon drop to -17 DEG C, if still making the first indoor unit at this time
Heat exchanger is lasting frosting 10 minutes even lower at -17 DEG C, is likely to result in excessive frosting on heat exchanger, to give subsequentization
White step brings burden, melt the frost on heat exchanger can not within the automatically cleaning mode operation time completely.
The accuracy determined in order to further improve frosting, it is preferable that set temperature includes multiple set temperatures, each
Set temperature corresponds to a setting time.The first indoor unit coil temperature continuously less than be equal to any set temperature time
In the case of reaching its corresponding setting time, the first indoor unit is made to enter the defrost stage.
As an example, set temperature includes the first set temperature T1, the second set temperature T2With third set temperature
T3, wherein T1=-12 DEG C, correspond to setting time t1=10 minutes；T2=-14 DEG C, correspond to setting time t1=7 minutes；T1
=-17 DEG C, correspond to setting time t1=4 minutes.So, above-mentioned preset condition 1) include three conditions:
11) the coil pipe temperature of the first indoor unit is in 10 minutes continuously less than equal to -12 DEG C.
12) the coil pipe temperature of the first indoor unit is in 7 minutes continuously less than equal to -14 DEG C.
13) the coil pipe temperature of the first indoor unit is in 4 minutes continuously less than equal to -17 DEG C.
11) it is considered as the condition of satisfaction 1 to any one condition in 13) as long as meeting).
Since in Frost formation process, coil temperature is gradually decreased, when the coil temperature of the first indoor unit reaches -12 DEG C,
Start timing at this time to determine that the coil temperature of the first indoor unit is lower than the cumulative time T of -12 DEG C of the first set temperaturea.In TaIt is small
When coil temperature in 10 minutes and the first indoor unit drops to -14 DEG C, start timing to determine the coil pipe temperature of the first indoor unit
Degree is lower than the cumulative time T of -14 DEG C of the first set temperatureb.In TaLess than 10 minutes, TbLess than 7 minutes and the disk of the first indoor unit
When tube temperature degree drops to -17 DEG C, start timing to determine the coil temperature of the first indoor unit lower than -17 DEG C of the first set temperature
Cumulative time Tc.As long as " TaReach 10 minutes ", " TbReach 7 minutes " and " TcReach 4 minutes " any one in three conditions
When condition meets, the first indoor unit is made to stop frosting.As can be seen that coil temperature is lower, reach the time of the set temperature
Also can be shorter, control method of the invention by be provided with multiple set temperatures and and setting time, to improve the first indoor unit
Heat exchanger frosting degree judgement, thus the phenomenon that avoiding the excessive frosting of the heat exchanger of the first indoor unit generation.
About condition 2), condition 2) in the setting of time threshold be when setting a maximum operation to the frosting of air conditioner
Between.If the coil temperature of air conditioner always be not up to condition 1) in set temperature in the case of, air conditioner can be according to condition
2) come determine stop frosting opportunity.
It is prolonged according to inventor experimental studies have found that, under general scenario, indoor unit frosting continues 10 to 11 minutes
When, indoor unit coil pipe frosting saturation.And more than 10 to 11 minutes after, indoor unit may have the excessive risk of frosting.In view of
This, it is preferable that the value range of time threshold is set as 10 to 11 minutes.Pass through condition 2) setting, make the first indoor unit
Frosting runing time is not more than time threshold, to avoid coil pipe from being in low-temperature condition for a long time and lead to the frosting of coil pipe
It is more, burden is brought to subsequent defrost step, melt the frost on heat exchanger can not within the automatically cleaning mode operation time completely.
It is, of course, understood that the value of time threshold is not limited only to above-mentioned example, those skilled in the art can be according to specific
Application scenarios carry out certain adjustment to time threshold.
Control method of the invention accurately judges that disk by the way that above-mentioned preset condition is arranged it can be seen from foregoing description
Pipe frosting degree, thus while guaranteeing the self-cleaning effect of heat exchanger of the first indoor unit, moreover it is possible to avoid on heat exchanger
Frosting is excessive and subsequent defrost step is caused not melt completely.
What needs to be explained here is that the setting of setting condition is not limited only to above-mentioned example, such as above-mentioned condition 11), 12), 13)
With the decision condition that 2) can in any combination or only select one of them to be saturated as judgement heat exchanger frosting.And in reality
In, the decision factor in setting condition is also not limited to coil temperature, can also join for other work of the first indoor unit
Number, those skilled in the art can carry out reasonable set to imposing a condition according to practical application scene.
In conclusion automatically cleaning control method of the invention passes through the first indoor unit for making to be initially received automatically cleaning instruction
Into automatically cleaning mode, and the communication for making the corresponding electric expansion valve closing of the second indoor unit, making the second indoor unit and outdoor unit
It interrupts and runs the blower of the second indoor unit according to corresponding wind speed setting, the corresponding electric expansion valve of the second indoor unit is closed
It can guarantee there is sufficient refrigerant to recycle in the pipe-line system of the first indoor unit, so, the heat exchanger of the first indoor unit
Frosting also can be fuller, higher to the removing degradation degree of the grey dust and dirt on the first indoor unit, so as to realize more preferably
Self-cleaning effect.At the same time, outdoor unit can be made not will receive second by interrupting the communication of the second indoor unit and outdoor unit
The influence for the user instruction that indoor unit receives, and always according to automatically cleaning mode operation.Also, the blower of the second indoor unit is pressed
The comfort level of the user in the interior space where can guaranteeing the second indoor unit is run according to corresponding wind speed setting.Preferably,
During the first indoor unit automatically cleaning, the frosting journey of the heat exchanger of the first indoor unit is judged by the setting of setting condition
Degree, thus while guaranteeing the self-cleaning effect of heat exchanger of the first indoor unit, moreover it is possible to avoid the heat exchanger of the first indoor unit
Upper frosting is excessive and subsequent defrost step is caused not melt completely.
So far, it has been combined preferred embodiment shown in the drawings and describes technical solution of the present invention, still, this field
Technical staff is it is easily understood that protection scope of the present invention is expressly not limited to these specific embodiments.Without departing from this
Under the premise of the principle of invention, those skilled in the art can make equivalent change or replacement to the relevant technologies feature, these
Technical solution after change or replacement will fall within the scope of protection of the present invention.
Claims (10)
1. a kind of automatically cleaning control method of multi-split air conditioner, which is characterized in that the multi-split air conditioner includes outdoor unit
And indoor units, the indoor units include the first indoor unit and at least one second indoor unit,
The control method includes:
In the case of the multi-split air conditioner is in cooling condition, first indoor unit is made to execute automatically cleaning mode；
Close the corresponding electric expansion valve of second indoor unit.
2. control method according to claim 1, which is characterized in that the control method includes:
In the case of the corresponding electric expansion valve of second indoor unit is closed, second indoor unit and the outdoor are cut off
The communication of machine.
3. according to control method as claimed in claim 2, which is characterized in that the control method includes:
In the case of the corresponding electric expansion valve of second indoor unit is closed, make the blower of second indoor unit with described
Rotation speed operation before the corresponding electric expansion valve closing of second indoor unit.
4. control method according to any one of claim 1 to 3, which is characterized in that the automatically cleaning mode includes knot
White stage and defrost stage, wherein
In the frosting stage, the blower of first indoor unit is remained turned-off, and makes the coil temperature of first indoor unit not
Lower than temperature threshold；
In the defrost stage, run the blower of first indoor unit with setting speed.
5. control method according to claim 4, which is characterized in that the range of the temperature threshold is -12 DEG C to -14
DEG C, and/or
The value range of the setting speed is 400r/min to 500r/min.
6. control method according to claim 4, which is characterized in that in the defrost stage, make the pressure of the outdoor unit
Contracting organ closes；And the electronic expansion valve opening of first indoor unit is adjusted to maximum opening.
7. control method according to claim 4, which is characterized in that first indoor unit enter the frosting stage it
Afterwards, the coil temperature of first indoor unit within the set time continuously less than set temperature is equal in the case of, make described
First indoor unit enters the defrost stage.
8. control method according to claim 7, which is characterized in that
The quantity of the set temperature is multiple, each corresponding setting time of the set temperature,
Reach its corresponding setting continuously less than the time for being equal to any set temperature in the coil temperature of first indoor unit
In the case of time, first indoor unit is made to enter the defrost stage.
9. according to control method as claimed in claim 4, which is characterized in that after first indoor unit enters the frosting stage,
In the case of the frosting runing time of first indoor unit reaches time threshold, first indoor unit is made to enter defrost rank
Section；
Wherein, the value range of the time threshold is 10 to 11 minutes.
10. a kind of multi-split air conditioner, which is characterized in that the air conditioner includes controller, and the controller is used for right of execution
Benefit require any one of 1 to 9 described in control method.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910497806.9A CN110230857B (en) | 2019-06-10 | 2019-06-10 | One-driving-multiple air conditioner and self-cleaning control method thereof |
| PCT/CN2019/105645 WO2020248414A1 (en) | 2019-06-10 | 2019-09-12 | Multi-split air conditioner and method for controlling self-cleaning of same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910497806.9A CN110230857B (en) | 2019-06-10 | 2019-06-10 | One-driving-multiple air conditioner and self-cleaning control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110230857A true CN110230857A (en) | 2019-09-13 |
| CN110230857B CN110230857B (en) | 2020-12-29 |
Family
ID=67859381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910497806.9A Active CN110230857B (en) | 2019-06-10 | 2019-06-10 | One-driving-multiple air conditioner and self-cleaning control method thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110230857B (en) |
| WO (1) | WO2020248414A1 (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110822627A (en) * | 2019-10-31 | 2020-02-21 | 广东志高暖通设备股份有限公司 | Self-cleaning control method for indoor heat exchanger of air conditioning system |
| CN111023452A (en) * | 2019-12-24 | 2020-04-17 | 宁波奥克斯电气股份有限公司 | Multi-split self-cleaning control method and device and multi-split air conditioner |
| CN111023265A (en) * | 2019-12-27 | 2020-04-17 | 宁波奥克斯电气股份有限公司 | Self-cleaning control method and air conditioner |
| CN111023422A (en) * | 2019-12-27 | 2020-04-17 | 宁波奥克斯电气股份有限公司 | Self-cleaning control method, multi-split self-cleaning control device and multi-split |
| CN111023263A (en) * | 2019-12-25 | 2020-04-17 | 宁波奥克斯电气股份有限公司 | Multi-split self-cleaning control method and device and multi-split air conditioner |
| CN111473493A (en) * | 2020-04-07 | 2020-07-31 | 广东美的制冷设备有限公司 | Control method of air conditioner system, air conditioner system and storage medium |
| CN111520890A (en) * | 2020-03-27 | 2020-08-11 | 青岛海尔空调电子有限公司 | Multi-split air conditioner and sterilization control method thereof |
| CN113137669A (en) * | 2020-01-16 | 2021-07-20 | 日立江森自控空调有限公司 | Refrigeration cycle system, window type air conditioner and method for operating window type air conditioner |
| CN113614459A (en) * | 2020-03-05 | 2021-11-05 | 日立江森自控空调有限公司 | Air conditioner |
| CN113614458A (en) * | 2020-03-05 | 2021-11-05 | 日立江森自控空调有限公司 | Air conditioner |
| CN113614457A (en) * | 2020-03-05 | 2021-11-05 | 日立江森自控空调有限公司 | Air conditioner |
| 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 |
| CN114279043A (en) * | 2021-12-08 | 2022-04-05 | 珠海格力电器股份有限公司 | Refrigerant shortage processing method and device, multi-split air conditioner and storage medium |
| CN115355600A (en) * | 2022-08-23 | 2022-11-18 | 宁波奥克斯电气股份有限公司 | Self-cleaning control method and device for heat exchanger of indoor unit of air conditioner and air conditioner |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104748464A (en) * | 2013-12-25 | 2015-07-01 | 珠海格力电器股份有限公司 | Multiple on-line defrosting method and device of air conditioning system and air conditioner |
| CN106196343A (en) * | 2016-08-25 | 2016-12-07 | 广东美的制冷设备有限公司 | Multi-split air conditioner and heating operation controlling method thereof |
| CN106247557A (en) * | 2016-08-23 | 2016-12-21 | 广东美的制冷设备有限公司 | Air-conditioner and cleaning control method thereof and device |
| CN107036243A (en) * | 2017-04-24 | 2017-08-11 | 广东美的暖通设备有限公司 | Indoor set points out control method and system, indoor set, multi-connected machine central air-conditioning |
| WO2019043765A1 (en) * | 2017-08-28 | 2019-03-07 | 日立ジョンソンコントロールズ空調株式会社 | Air conditioning machine |
| CN109855191A (en) * | 2018-12-14 | 2019-06-07 | 青岛海信日立空调系统有限公司 | Multi-gang air-conditioner device and its control method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236186A (en) * | 2014-09-30 | 2014-12-24 | 宁波奥克斯电气有限公司 | Defrosting control method for heat pump multi-connected air conditioning unit |
| CN106679067A (en) * | 2016-11-11 | 2017-05-17 | 青岛海尔空调器有限总公司 | Self-cleaning method for air conditioner heat exchanger |
| CN107514683B (en) * | 2017-07-31 | 2020-11-03 | 青岛海尔空调器有限总公司 | Air conditioner and indoor unit self-cleaning control method thereof |
| CN107560072B (en) * | 2017-08-29 | 2021-03-19 | 广东美的制冷设备有限公司 | Multi-split air conditioner, control method thereof and storage medium |
| CN108386907B (en) * | 2018-01-09 | 2019-11-05 | 青岛海尔空调器有限总公司 | Wall-hanging air conditioner and its automatically cleaning control method |
| CN108397818B (en) * | 2018-01-09 | 2019-11-05 | 青岛海尔空调器有限总公司 | Wall-hanging air conditioner and its automatically cleaning control method |
| CN108361931B (en) * | 2018-02-26 | 2020-05-01 | 宁波奥克斯电气股份有限公司 | Multi-split self-cleaning method and multi-split air conditioning system |
-
2019
- 2019-06-10 CN CN201910497806.9A patent/CN110230857B/en active Active
- 2019-09-12 WO PCT/CN2019/105645 patent/WO2020248414A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104748464A (en) * | 2013-12-25 | 2015-07-01 | 珠海格力电器股份有限公司 | Multiple on-line defrosting method and device of air conditioning system and air conditioner |
| CN106247557A (en) * | 2016-08-23 | 2016-12-21 | 广东美的制冷设备有限公司 | Air-conditioner and cleaning control method thereof and device |
| CN106196343A (en) * | 2016-08-25 | 2016-12-07 | 广东美的制冷设备有限公司 | Multi-split air conditioner and heating operation controlling method thereof |
| CN107036243A (en) * | 2017-04-24 | 2017-08-11 | 广东美的暖通设备有限公司 | Indoor set points out control method and system, indoor set, multi-connected machine central air-conditioning |
| WO2019043765A1 (en) * | 2017-08-28 | 2019-03-07 | 日立ジョンソンコントロールズ空調株式会社 | Air conditioning machine |
| CN109855191A (en) * | 2018-12-14 | 2019-06-07 | 青岛海信日立空调系统有限公司 | Multi-gang air-conditioner device and its control method |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110822627A (en) * | 2019-10-31 | 2020-02-21 | 广东志高暖通设备股份有限公司 | Self-cleaning control method for indoor heat exchanger of air conditioning system |
| CN111023452A (en) * | 2019-12-24 | 2020-04-17 | 宁波奥克斯电气股份有限公司 | Multi-split self-cleaning control method and device and multi-split air conditioner |
| CN111023263A (en) * | 2019-12-25 | 2020-04-17 | 宁波奥克斯电气股份有限公司 | Multi-split self-cleaning control method and device and multi-split air conditioner |
| CN111023265A (en) * | 2019-12-27 | 2020-04-17 | 宁波奥克斯电气股份有限公司 | Self-cleaning control method and air conditioner |
| CN111023422A (en) * | 2019-12-27 | 2020-04-17 | 宁波奥克斯电气股份有限公司 | Self-cleaning control method, multi-split self-cleaning control device and multi-split |
| CN111023265B (en) * | 2019-12-27 | 2020-07-03 | 宁波奥克斯电气股份有限公司 | Self-cleaning control method and air conditioner |
| CN113137669A (en) * | 2020-01-16 | 2021-07-20 | 日立江森自控空调有限公司 | Refrigeration cycle system, window type air conditioner and method for operating window type air conditioner |
| CN113614459A (en) * | 2020-03-05 | 2021-11-05 | 日立江森自控空调有限公司 | Air conditioner |
| CN113614458A (en) * | 2020-03-05 | 2021-11-05 | 日立江森自控空调有限公司 | Air conditioner |
| CN113614457A (en) * | 2020-03-05 | 2021-11-05 | 日立江森自控空调有限公司 | Air conditioner |
| CN113614458B (en) * | 2020-03-05 | 2023-04-04 | 日立江森自控空调有限公司 | Air conditioner |
| CN111520890A (en) * | 2020-03-27 | 2020-08-11 | 青岛海尔空调电子有限公司 | Multi-split air conditioner and sterilization control method thereof |
| CN111473493A (en) * | 2020-04-07 | 2020-07-31 | 广东美的制冷设备有限公司 | Control method of air conditioner system, air conditioner system and storage medium |
| CN114279043A (en) * | 2021-12-08 | 2022-04-05 | 珠海格力电器股份有限公司 | Refrigerant shortage processing method and device, multi-split air conditioner and storage medium |
| 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 |
| CN115355600A (en) * | 2022-08-23 | 2022-11-18 | 宁波奥克斯电气股份有限公司 | Self-cleaning control method and device for heat exchanger of indoor unit of air conditioner and air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110230857B (en) | 2020-12-29 |
| WO2020248414A1 (en) | 2020-12-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110230857A (en) | Multi-split air conditioner and its automatically cleaning control method | |
| CN106594976B (en) | Machine cleaning method inside and outside air-conditioning | |
| CN107525221A (en) | A kind of self-cleaning control method and device of air-conditioning | |
| CN108413558A (en) | A kind of control method and device of air-conditioning | |
| CN109210682A (en) | The self-cleaning control method and device of air-conditioning, air conditioner, storage medium | |
| CN107642866B (en) | Air conditioner self-cleaning control method and device | |
| CN110207314A (en) | Air conditioner and its air conditioning control method, control device and readable storage medium storing program for executing | |
| CN110736187A (en) | air conditioner self-cleaning control method and device | |
| WO2020070892A1 (en) | Air conditioner, method for controlling air conditioner, and program | |
| CN106369750A (en) | Defrosting control method and defrosting control device of air conditioner and air conditioner | |
| CN109253525A (en) | Fixed frequency air conditioner outdoor heat exchanger automatically cleaning control method and air conditioner | |
| CN106403205A (en) | Air-conditioner defrosting system and defrosting control method | |
| CN108413562A (en) | A kind of self-cleaning control method and device of air-conditioning | |
| CN110529973A (en) | A kind of automatically cleaning control method of air-conditioning, automatically cleaning control device and air conditioner | |
| CN109556234A (en) | Defrosting control method, device, equipment and medium | |
| CN108375159A (en) | A kind of air-conditioner defrosting control method and device | |
| CN104990321A (en) | Air conditioner and defrosting method thereof | |
| CN110873426B (en) | Air conditioner and self-cleaning control method thereof | |
| CN103797309A (en) | Refrigeration and air-conditioning device | |
| TW201947127A (en) | air conditioner | |
| CN108361955A (en) | Anti-condensation method and air-conditioning are carried out using automatically cleaning | |
| WO2023284193A1 (en) | Control method for implementing self-cleaning function outside of coiled pipe of outdoor heat exchanger | |
| CN110017582A (en) | Defrosting control method for air conditioner | |
| CN110848883A (en) | Control method, control device and control system for defrosting of air conditioner | |
| CN110470001A (en) | The control method and air conditioner of air conditioner without shutting defrosting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Applicant after: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Applicant after: Haier Zhijia Co.,Ltd. Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Applicant before: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Applicant before: Qingdao Haier Joint Stock Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |