CN108548297A - A kind of one method dragged more air-conditionings and control the refrigerant that one drags more air-conditionings - Google Patents
A kind of one method dragged more air-conditionings and control the refrigerant that one drags more air-conditionings Download PDFInfo
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- CN108548297A CN108548297A CN201810397382.4A CN201810397382A CN108548297A CN 108548297 A CN108548297 A CN 108548297A CN 201810397382 A CN201810397382 A CN 201810397382A CN 108548297 A CN108548297 A CN 108548297A
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- indoor unit
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- expansion valve
- coil pipe
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Classifications
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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
- F24F11/65—Electronic processing for selecting an operating mode
- F24F11/67—Switching between heating and cooling modes
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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
-
- 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
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
Abstract
The method dragged more air-conditionings the present invention provides a kind of one and control the refrigerant that one drags more air-conditionings, including：S1：The operation information of each indoor unit in more air-conditionings is dragged in acquisition one, wherein, operation information includes at least two indoor coil pipe values, each indoor coil pipe value corresponds to an acquisition moment, acquires the time difference at moment and current time in preset time threshold；S2：According at least two indoor coil pipe values of each indoor unit, judge to whether there is at least one target indoor unit in each indoor unit, wherein there are refrigerant accumulations in target indoor unit, if so, executing S3, otherwise, execute S1；S3：Determine the target electronic expansion valve opening of each target indoor unit；S4：According to the target electronic expansion valve opening of each target indoor unit, the corresponding electric expansion valve of each target indoor unit is adjusted, to control the refrigerant that outdoor unit is delivered to each target indoor unit, executes S1.This programme is easy to operate, and timeliness is higher.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly to a kind of one drags more air-conditionings and controls the refrigerant that one drags more air-conditionings
Method.
Background technology
One to drag the refrigerant of outdoor unit and each indoor unit in more air-conditionings be shared, in the process of running, generally passes through control
The electronic expansion valve opening of indoor unit processed adjusts the distribution of refrigerant.But due to the electronic expansion valve opening of different indoor units
It has differences, often results in the refrigerant accumulation in indoor unit.In order to ensure to drag the normal operation of more air-conditionings, need in time to one
The refrigerant in more air-conditionings is dragged to be controlled.
In the prior art, when detect one drag accumulated there are refrigerant in more air-conditionings after, generally require by one drag more air-conditionings into
Row shutdown, to adjust electronic expansion valve opening.
But this method operating process is relatively complicated, and timeliness is poor.
Invention content
The method dragged more air-conditionings an embodiment of the present invention provides a kind of one and control the refrigerant that one drags more air-conditionings, can be one
More operation of air conditioner are dragged to drag the refrigerant of more air-conditionings by adjusting electronic expansion valve opening control one in the process, this method is easy to operate,
Timeliness is higher.
In a first aspect, an embodiment of the present invention provides a kind of method controlling the refrigerant that one drags more air-conditionings, it is applied to refrigerant
Controller, including：
S1：The operation information of each indoor unit in more air-conditionings is dragged in acquisition one, wherein the operation information includes at least
Two indoor coil pipe values, each described indoor coil pipe value correspond to an acquisition moment, the acquisition moment with work as
The time difference at preceding moment is in preset time threshold；
S2：According at least two indoor coil pipe values of each indoor unit, judge be in each indoor unit
It is no that there are at least one target indoor units, wherein and there are refrigerant accumulations in the target indoor unit, if so, S3 is executed, it is no
Then, S1 is executed；
S3：Determine the target electronic expansion valve opening of each target indoor unit；
S4：According to the target electronic expansion valve opening of each target indoor unit, each target indoor unit is adjusted
Corresponding electric expansion valve executes S1 to control the refrigerant that the outdoor unit is delivered to each target indoor unit.
Preferably,
Further comprise：Pre-set ascending temperature threshold value and decline temperature threshold value；
At least two indoor coil pipe values according to each indoor unit, judge be in each indoor unit
It is no that there are at least one target indoor units, wherein and there are refrigerant accumulations in the target indoor unit, including：
For indoor unit described in each, it is performed both by：According at least two indoor coil pipe values of current indoor machine, really
Determine the variation tendency of indoor coil pipe；
When the variation tendency of the indoor coil pipe is to rise, judge in at least two indoor coil pipes value
Whether maximum indoor coil pipe value is less than the ascending temperature threshold value, if so, determining the current indoor machine, there are cold
Matchmaker's accumulation is the target indoor unit；
When the variation tendency of the indoor coil pipe is to decline, judge in at least two indoor coil pipes value
Whether minimum indoor coil pipe value is less than the decline temperature threshold value, if so, determining the current indoor machine, there are cold
Matchmaker's accumulation is the target indoor unit.
Preferably,
Further comprise：
Temperature range not higher than the ascending temperature threshold value is divided at least two ascending temperature sections, is each
First electronic expansion valve opening is arranged in the ascending temperature section；
Temperature range not higher than the decline temperature threshold value is divided at least two decline temperature sections, is each
Second electronic expansion valve opening is arranged in the decline temperature section；
The S3, including：
For target indoor unit described in each, it is performed both by：
When the variation tendency of the indoor coil pipe is to rise, target ascending temperature section is determined, wherein the mesh
It is the upper heating in at least two indoor coil pipes value where maximum indoor coil pipe value to mark ascending temperature section
Spend section；
Using corresponding first electronic expansion valve opening in target ascending temperature section as the mesh of current goal indoor unit
Mark electronic expansion valve opening；
When the variation tendency of the indoor coil pipe is to decline, target decline temperature section is determined, wherein the mesh
Mark the lower cooling where the indoor coil pipe value that decline temperature section is minimum in at least two indoor coil pipes value
Spend section；
Using corresponding second electronic expansion valve opening in target decline temperature section as the mesh of current goal indoor unit
Mark electronic expansion valve opening.
Preferably,
The operation information, further comprises：Current electronic expansion valve opening；
The target electronic expansion valve opening according to each target indoor unit adjusts each target indoor unit
Corresponding electric expansion valve, to control the refrigerant that the outdoor unit is delivered to each target indoor unit, including：
According to target electronic expansion valve opening, the Current electronic expansion valve opening of each target indoor unit, determine each
The electric expansion valve of a target indoor unit adjusts amplitude；
Amplitude is adjusted according to the electric expansion valve of each target indoor unit, each target indoor unit of adjustment corresponds to
Electric expansion valve, to control the refrigerant that the outdoor unit is delivered to each target indoor unit.
Preferably,
The operation information, further comprises：Operational mode；
After S1, before S2, further comprise：
According to the operational mode of each indoor unit, described one operational mode for dragging more air-conditionings is determined；
When it is refrigeration that described one, which drags the operational mode of more air-conditionings, S1 is executed, when the operational mode that described one drags more air-conditionings
When to heat, S2 is executed.
Second aspect, an embodiment of the present invention provides one kind one to drag more air-conditionings, including：Cold medium controller, outdoor unit, at least
Two indoor units and electric expansion valve corresponding with indoor unit described in each；The outdoor unit is swollen by the corresponding electronics
Swollen valve is connected with each indoor unit；
The cold medium controller, for executing：
S1：Acquire the operation information of each indoor unit, wherein the operation information includes at least two interiors
Coil temperature value, each described one acquisition moment of indoor coil pipe value correspondence, the acquisition moment and current time
Time difference is in preset time threshold；
S2：According at least two indoor coil pipe values of each indoor unit, judge be in each indoor unit
It is no that there are at least one target indoor units, wherein and there are refrigerant accumulations in the target indoor unit, if so, S3 is executed, it is no
Then, S1 is executed；
S3：Determine the target electronic expansion valve opening of each target indoor unit；
S4：According to the target electronic expansion valve opening of each target indoor unit, each target indoor unit is adjusted
Corresponding electric expansion valve executes S1 to control the refrigerant that the outdoor unit is delivered to each target indoor unit.
Preferably,
The cold medium controller is further used for that ascending temperature threshold value and decline temperature threshold value is arranged；
The cold medium controller is performed both by for being directed to each described indoor unit：According at least the two of current indoor machine
A indoor coil pipe value, determines the variation tendency of indoor coil pipe；When the variation tendency of the indoor coil pipe is upper
When rising, judge whether maximum indoor coil pipe value is less than the ascending temperature in at least two indoor coil pipes value
Threshold value, if so, determining the current indoor machine, there are refrigerants to accumulate, is the target indoor unit；When the indoor coil temperature
The variation tendency of degree is when declining, whether to judge indoor coil pipe value minimum in at least two indoor coil pipes value
Less than the decline temperature threshold value, if so, determining the current indoor machine, there are refrigerants to accumulate, is the target indoor unit.
Preferably,
The cold medium controller is further used for the temperature range not higher than the ascending temperature threshold value being divided at least
Two ascending temperature sections are that first electronic expansion valve opening is arranged in each described ascending temperature section；It will be not higher than
The temperature range of the decline temperature threshold value is divided at least two decline temperature sections, is each described decline temperature section
One the second electronic expansion valve opening is set；
The cold medium controller is performed both by for being directed to each described target indoor unit：
When the variation tendency of the indoor coil pipe is to rise, target ascending temperature section is determined, wherein the mesh
It is the upper heating in at least two indoor coil pipes value where maximum indoor coil pipe value to mark ascending temperature section
Spend section；Using corresponding first electronic expansion valve opening in target ascending temperature section as the target of current goal indoor unit
Electronic expansion valve opening；
When the variation tendency of the indoor coil pipe is to decline, target decline temperature section is determined, wherein the mesh
Mark the lower cooling where the indoor coil pipe value that decline temperature section is minimum in at least two indoor coil pipes value
Spend section；Using corresponding second electronic expansion valve opening in target decline temperature section as the target of current goal indoor unit
Electronic expansion valve opening.
Preferably,
The operation information, further comprises：Current electronic expansion valve opening；
The cold medium controller, for target electronic expansion valve opening, the current electricity according to each target indoor unit
Sub- expansion valve opening determines the electric expansion valve adjustment amplitude of each target indoor unit；According in each target chamber
The electric expansion valve of machine adjusts amplitude, the corresponding electric expansion valve of each target indoor unit is adjusted, to control the outdoor
Machine is delivered to the refrigerant of each target indoor unit.
Preferably,
The operation information, further comprises：Operational mode；
The cold medium controller is further used for the operational mode according to each indoor unit, determine described one drag it is more
The operational mode of air-conditioning；When it is refrigeration that described one, which drags the operational mode of more air-conditionings, S1 is executed, when the fortune that described one drags more air-conditionings
When row pattern is heating, S2 is executed.
The method dragged more air-conditionings an embodiment of the present invention provides a kind of one and control the refrigerant that one drags more air-conditionings, refrigerant control
In the operational process that device can drag more air-conditionings one, indoor coil pipe value of each indoor unit in different moments is acquired in real time,
And judge to accumulate with the presence or absence of refrigerant in each indoor unit according to indoor coil pipe value, when there are refrigerant heaps in target indoor unit
When product, the electric expansion valve that cold medium controller can be between control targe indoor unit and outdoor unit is delivered to controlling outdoor unit
The refrigerant of target indoor unit.This method can be during one drags more operation of air conditioner by adjusting electronic expansion valve opening realization pair
One drags the closed-loop control of refrigerant in more air-conditionings, and this method is easy to operate, and timeliness is higher.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the flow chart of the method for the refrigerant that more air-conditionings are dragged in a kind of control one provided by one embodiment of the present invention；
Fig. 2 is provided by one embodiment of the present invention a kind of one structural schematic diagram for dragging more air-conditionings；
Fig. 3 is the flow chart of the method for the refrigerant that more air-conditionings are dragged in a kind of control one that another embodiment of the present invention provides.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments, based on the embodiments of the present invention, those of ordinary skill in the art
The every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
As shown in Figure 1, an embodiment of the present invention provides a kind of method controlling the refrigerant that one drags more air-conditionings, it is applied to refrigerant
Controller, this method may comprise steps of：
Step 101：The operation information that each indoor unit in more air-conditionings is dragged in acquisition one, wherein operation information include to
Few two indoor coil pipe values, each indoor coil pipe value correspond to an acquisition moment, acquire moment and current time
Time difference in preset time threshold；
Step 102：According at least two indoor coil pipe values of each indoor unit, judge whether deposited in each indoor unit
In at least one target indoor unit, wherein there are refrigerant accumulations in target indoor unit, are otherwise held if so, executing step 103
Row step 101；
Step 103：Determine the target electronic expansion valve opening of each target indoor unit；
Step 104：According to the target electronic expansion valve opening of each target indoor unit, adjusts each target indoor unit and correspond to
Electric expansion valve execute step 101 to control the refrigerant that outdoor unit is delivered to each target indoor unit.
In the operational process that cold medium controller can drag more air-conditionings one, each indoor unit is acquired in real time in different moments
Indoor coil pipe value, and judge to accumulate with the presence or absence of refrigerant in each indoor unit according to indoor coil pipe value, work as target chamber
There are when refrigerant accumulation in interior machine, the electric expansion valve that cold medium controller can be between control targe indoor unit and outdoor unit, with
Control outdoor unit is delivered to the refrigerant of target indoor unit.This method can be during one drags more operation of air conditioner by adjusting electronics
Expansion valve opening realizes the closed-loop control for dragging refrigerant in more air-conditionings to one, and this method is easy to operate, and timeliness is higher.
In one embodiment of the invention, this method further includes：Pre-set ascending temperature threshold value and decline temperature threshold
Value；
According at least two indoor coil pipe values of each indoor unit, judge to whether there is at least one in each indoor unit
A target indoor unit, wherein there are refrigerant accumulations in target indoor unit, including：
For each indoor unit, it is performed both by：According at least two indoor coil pipe values of current indoor machine, room is determined
The variation tendency of inner coil pipe temperature；
When the variation tendency of indoor coil pipe is to rise, maximum room at least two indoor coil pipe values is judged
Whether inner coil pipe temperature value is less than ascending temperature threshold value, if so, determining current indoor machine, there are refrigerants to accumulate, in target chamber
Machine；
When the variation tendency of indoor coil pipe is to decline, room minimum at least two indoor coil pipe values is judged
Whether inner coil pipe temperature value is less than decline temperature threshold value, if so, determining current indoor machine, there are refrigerants to accumulate, in target chamber
Machine.
In embodiments of the present invention, in order to more clearly from determine normal condition and scarce refrigerant state, for temperature rise
Decline two kinds of situations with temperature and ascending temperature threshold value of different sizes and decline temperature threshold value is respectively set, accurately to determine refrigerant
The generation of accumulation.For example, the ascending temperature threshold value and decline temperature threshold value of setting are respectively 30 DEG C, 25 DEG C, when collected room
When inner coil pipe temperature value is followed successively by 32 DEG C, 28 DEG C, 24 DEG C, since 24 DEG C of minimum value is less than decline in three indoor coil pipe values
25 DEG C of temperature threshold, determining current indoor machine, there are refrigerant accumulations.
In one embodiment of the invention, in order to determine the adjustment amplitude of electric expansion valve according to indoor coil pipe,
This method further includes：
Temperature range not higher than ascending temperature threshold value is divided at least two ascending temperature sections, for each rising
First electronic expansion valve opening is arranged in temperature range；
Temperature range not higher than decline temperature threshold value is divided at least two decline temperature sections, for each decline
Second electronic expansion valve opening is arranged in temperature range；
S3, including：
For each target indoor unit, it is performed both by：
When the variation tendency of indoor coil pipe is to rise, target ascending temperature section is determined, wherein heat up in target
It is the ascending temperature section at least two indoor coil pipe values where maximum indoor coil pipe value to spend section；
Using corresponding first electronic expansion valve opening in target ascending temperature section as the target of current goal indoor unit electricity
Sub- expansion valve opening；
When the variation tendency of indoor coil pipe is to decline, target decline temperature section is determined, wherein cool down under target
Spend the decline temperature section where the indoor coil pipe value that section is minimum at least two indoor coil pipe values；
Using corresponding second electronic expansion valve opening in target decline temperature section as the target of current goal indoor unit electricity
Sub- expansion valve opening.
In embodiments of the present invention, the degree that can be accumulated according to refrigerant adjusts the aperture of electric expansion valve, and refrigerant heap
Long-pending degree can be determined by indoor coil pipe value.
In one embodiment of the invention, operation information further comprises：Current electronic expansion valve opening；
According to the target electronic expansion valve opening of each target indoor unit, it is swollen to adjust the corresponding electronics of each target indoor unit
Swollen valve, to control the refrigerant that outdoor unit is delivered to each target indoor unit, including：
According to the target electronic expansion valve opening of each target indoor unit, Current electronic expansion valve opening, each mesh is determined
The electric expansion valve for marking indoor unit adjusts amplitude；
Amplitude is adjusted according to the electric expansion valve of each target indoor unit, it is swollen to adjust the corresponding electronics of each target indoor unit
Swollen valve, to control the refrigerant that outdoor unit is delivered to each target indoor unit.
In one embodiment of the invention, in order to be further simplified judge refrigerant accumulation process, operation information, into one
Step includes：Operational mode；
After S1, before S2, further comprise：
According to the operational mode of each indoor unit, an operational mode for dragging more air-conditionings is determined；
When it is refrigeration that one, which drags the operational mode of more air-conditionings, S1 is executed, when it is heating that one, which drags the operational mode of more air-conditionings,
Execute S2.
Since refrigerant accumulation occurs in a heating mode, more air-conditionings are dragged in cooling mode and are that there is no cold when one
Matchmaker's accumulation, subsequent calculation amount can be simplified by the step, improve control efficiency.
As shown in Fig. 2, an embodiment of the present invention provides one kind one to drag more air-conditionings, including：Cold medium controller 201, outdoor unit
202, two indoor units 203 and electric expansion valve corresponding with each indoor unit 204；Outdoor unit 202 passes through corresponding electronics
Expansion valve 204 is connected with each indoor unit 203；
Cold medium controller 201, for executing：
S1：Acquire the operation information of each indoor unit 203, wherein operation information includes at least two indoor coils
Temperature value, each indoor coil pipe value correspond to an acquisition moment, acquire the time difference at moment and current time default
Time threshold in；
S2：According at least two indoor coil pipe values of each indoor unit 203, judge in each indoor unit 203 whether
There are at least one target indoor units, wherein there are refrigerant accumulations in target indoor unit, if so, executing S3, otherwise, execute
S1；
S3：Determine the target electronic expansion valve opening of each target indoor unit；
S4：According to the target electronic expansion valve opening of each target indoor unit, the corresponding electricity of each target indoor unit is adjusted
Sub- expansion valve executes S1 to control the refrigerant that outdoor unit 202 is delivered to each target indoor unit.
In one embodiment of the invention, cold medium controller 201 are further used for that ascending temperature threshold value and decline is arranged
Temperature threshold；
Cold medium controller 201 is performed both by for being directed to each indoor unit 203：According at least two of current indoor machine
Indoor coil pipe value determines the variation tendency of indoor coil pipe；When the variation tendency of indoor coil pipe is to rise, sentence
Whether maximum indoor coil pipe value is less than ascending temperature threshold value in disconnected at least two indoor coil pipe values, if so, really
Determining current indoor machine, there are refrigerants to accumulate, is target indoor unit；When the variation tendency of indoor coil pipe is to decline, judge extremely
Whether minimum indoor coil pipe value is less than decline temperature threshold value in few two indoor coil pipe values, if so, determination is worked as
There are refrigerants to accumulate for preceding indoor unit, is target indoor unit.
In one embodiment of the invention, cold medium controller 201 are further used for that ascending temperature threshold value will be not higher than
Temperature range is divided at least two ascending temperature sections, and first electric expansion valve is arranged for each ascending temperature section
Aperture；Temperature range not higher than decline temperature threshold value is divided at least two decline temperature sections, for each lower cooling
It spends section and one the second electronic expansion valve opening is set；
Cold medium controller 201 is performed both by for being directed to each target indoor unit：
When the variation tendency of indoor coil pipe is to rise, target ascending temperature section is determined, wherein heat up in target
It is the ascending temperature section at least two indoor coil pipe values where maximum indoor coil pipe value to spend section；By target
Target electronic expansion valve opening of corresponding first electronic expansion valve opening in ascending temperature section as current goal indoor unit；
When the variation tendency of indoor coil pipe is to decline, target decline temperature section is determined, wherein cool down under target
Spend the decline temperature section where the indoor coil pipe value that section is minimum at least two indoor coil pipe values；By target
Target electronic expansion valve opening of corresponding second electronic expansion valve opening in decline temperature section as current goal indoor unit.
In one embodiment of the invention, operation information further comprises：Current electronic expansion valve opening；
Cold medium controller 201, for being expanded according to target electronic expansion valve opening, the Current electronic of each target indoor unit
Valve opening determines the electric expansion valve adjustment amplitude of each target indoor unit；According to the electric expansion valve of each target indoor unit
Amplitude is adjusted, the corresponding electric expansion valve of each target indoor unit is adjusted, each target indoor unit is delivered to control outdoor unit
Refrigerant.
In one embodiment of the invention, operation information further comprises：Operational mode；
Cold medium controller 201 is further used for the operational mode according to each indoor unit 203, determines that one drags more air-conditionings
Operational mode；When one drag more air-conditionings operational mode be refrigeration when, execute S1, when one drag more air-conditionings operational mode be heating
When, execute S2.
As shown in figure 3, the embodiment of the present invention is by taking one drag two air-conditioning as an example, control one is dragged the method for the refrigerant of more air-conditionings into
Row explains in detail, and this method may comprise steps of：
Step 301：Ascending temperature threshold value and decline temperature threshold value are set.
Ascending temperature threshold value is 30 DEG C and 25 DEG C of decline temperature threshold value.
Step 302：Temperature range not higher than ascending temperature threshold value is divided at least two ascending temperature sections, is every
First electronic expansion valve opening is arranged in one ascending temperature section, and the temperature range not higher than decline temperature threshold value is divided
At at least two decline temperature sections, one the second electronic expansion valve opening is set for each decline temperature section.
By the temperature range not higher than ascending temperature threshold value be divided into 30 DEG C -25 DEG C, 24 DEG C -20 DEG C, be less than 20 DEG C, respectively
Corresponding first electronic expansion valve opening is A1, A2, A3；
By the temperature range not higher than decline temperature threshold value be divided into 25 DEG C -20 DEG C, 19 DEG C -15 DEG C, be less than 15 DEG C, respectively
Corresponding first electronic expansion valve opening is B1, B2, B3.
Can also be that a refrigerant state is arranged in each temperature range it should be noted that in practical application scene,
For example, normal, moderate lacks refrigerant state, seriously scarce refrigerant state etc., the operating status of air-conditioning can be more intuitively determined.
Step 303：The operation information of each indoor unit in more air-conditionings is dragged in acquisition one, wherein operation information includes working as
Preceding electronic expansion valve opening, operational mode, three indoor coil pipe values, each indoor coil pipe value correspond to an acquisition
The time difference at moment, acquisition moment and current time is in preset time threshold.
In embodiments of the present invention, time threshold 5s, before current time 2s, 1s, current time difference collection room in
Coil temperature value.
The Current electronic expansion valve opening of indoor unit M is M1, operational mode be heating, three indoor coil pipe values successively
It is 26 DEG C, 29 DEG C, 31 DEG C；
The Current electronic expansion valve opening of indoor unit N is N1, operational mode be heating, three indoor coil pipe values successively
It is 29 DEG C, 26 DEG C, 24 DEG C.
Step 304：According to the operational mode of each indoor unit, determine an operational mode for dragging more air-conditionings, when one drag it is mostly empty
When the operational mode of tune is refrigeration, step 303 is executed, when it is heating that one, which drags the operational mode of more air-conditionings, executes step 305.
By the operational mode of indoor unit M, N it is found that one drags the operational mode of more air-conditionings for heating, step 305 is all executed.
Step 305：For each indoor unit, it is performed both by：According to the three of current indoor machine indoor coil pipe values, really
Determine the variation tendency of indoor coil pipe.
It is illustrated by taking indoor unit M as an example, since three indoor coil pipe values are followed successively by 26 DEG C, 29 DEG C, 31 DEG C, because
This, the variation tendency of indoor coil pipe is to rise.
Step 306：When the variation tendency of indoor coil pipe is to rise, judge maximum in three indoor coil pipe values
Indoor coil pipe value whether be less than ascending temperature threshold value, if so, execute step 307, otherwise, execute step 303.
31 DEG C of maximum indoor coil pipe value in three indoor coil pipe values is more than 30 DEG C of ascending temperature threshold value, because
This, there is no refrigerants to accumulate in current indoor machine M, executes step 303 and continues to acquire.
Step 307：Determining current indoor machine, there are refrigerants to accumulate, is target indoor unit, executes step 310.
Step 308：When the variation tendency of indoor coil pipe is to decline, judge minimum in three indoor coil pipe values
Whether indoor coil pipe value is less than decline temperature threshold value, if so, executing step 309, otherwise, executes step 303.
24 DEG C minimum of indoor coil pipe value is less than decline temperature in the corresponding three indoor coil pipe values of indoor unit N
25 DEG C of threshold value, there are refrigerant accumulations, execute step 309 and carry out refrigerant control.
Step 309：Determining current indoor machine, there are refrigerants to accumulate, is target indoor unit, executes step 311.
Step 310：For each target indoor unit, it is performed both by：When the variation tendency of indoor coil pipe is to rise,
Determine target ascending temperature section, wherein target ascending temperature section is maximum room at least two indoor coil pipe values
Ascending temperature section where inner coil pipe temperature value；Using corresponding first electronic expansion valve opening in target ascending temperature section as
The target electronic expansion valve opening of current goal indoor unit executes step 312.
Step 311：When the variation tendency of indoor coil pipe is to decline, target decline temperature section is determined, wherein mesh
Mark the decline temperature area where the indoor coil pipe value that decline temperature section is minimum at least two indoor coil pipe values
Between；It is expanded corresponding second electronic expansion valve opening in target decline temperature section as the target electronic of current goal indoor unit
Valve opening.
By taking indoor unit N as an example, target decline temperature section is 25 DEG C -20 DEG C, and target electronic expansion valve opening is B1.
Step 312：According to the target electronic expansion valve opening of each target indoor unit, Current electronic expansion valve opening, really
The electric expansion valve of fixed each target indoor unit adjusts amplitude.
The Current electronic expansion valve opening of indoor unit N is N1, target electronic expansion valve opening is B1, determines indoor unit N's
It is B1-N1 that electric expansion valve, which adjusts amplitude,.
Step 313：Amplitude is adjusted according to the electric expansion valve of each target indoor unit, each target indoor unit is adjusted and corresponds to
Electric expansion valve, to control the refrigerant that outdoor unit is delivered to each target indoor unit.
It is B1-N1 to adjust amplitude according to the electric expansion valve of indoor unit N, adjusts the corresponding electric expansion valves of indoor unit N, with
Control outdoor unit is delivered to the refrigerant of indoor unit N.
The contents such as information exchange, the implementation procedure between each device in above-mentioned air-conditioning system, due to air-conditioning of the present invention
System embodiment is based on same design, and particular content can be found in the narration in the method for the present invention embodiment, and details are not described herein again.
To sum up, each embodiment of the present invention at least has the following effects that：
1, in embodiments of the present invention, in the operational process that cold medium controller can drag more air-conditionings one, acquisition is each in real time
Indoor coil pipe value of a indoor unit in different moments, and judge whether deposited in each indoor unit according to indoor coil pipe value
It is accumulated in refrigerant, when, there are when refrigerant accumulation, cold medium controller being capable of control targe indoor unit and outdoor unit in target indoor unit
Between electric expansion valve, to control the refrigerant that outdoor unit is delivered to target indoor unit.This method can drag more air-conditionings to transport one
During row the closed-loop control for dragging refrigerant in more air-conditionings to one, this method operation letter are realized by adjusting electronic expansion valve opening
Single, timeliness is higher.
2, in embodiments of the present invention, closed loop control method is used, dynamic sensing chamber in operating is successfully set up
The real-time running state of interior machine and the variation tendency of indoor coil pipe are calculated according to the dynamic change of indoor coil pipe
The state of refrigerant is lacked, and by electronic expansion valve controls refrigerant, realizes closed-loop control, prevents one to drag more air-conditionings in single indoor unit
Refrigerant accumulation when long-play, improves properties of product and reliability.
It should be noted that herein, such as first and second etc relational terms are used merely to an entity
Or operation is distinguished with another entity or operation, is existed without necessarily requiring or implying between these entities or operation
Any actual relationship or order.Moreover, the terms "include", "comprise" or its any other variant be intended to it is non-
It is exclusive to include, so that the process, method, article or equipment including a series of elements includes not only those elements,
But also include other elements that are not explicitly listed, or further include solid by this process, method, article or equipment
Some elements.In the absence of more restrictions, the element limited by sentence " including a 〃 〃 ", it is not excluded that
There is also other identical factors in the process, method, article or apparatus that includes the element.
One of ordinary skill in the art will appreciate that：Realize that all or part of step of above method embodiment can pass through
The relevant hardware of program instruction is completed, and program above-mentioned can be stored in computer-readable storage medium, the program
When being executed, step including the steps of the foregoing method embodiments is executed；And storage medium above-mentioned includes：ROM, RAM, magnetic disc or light
In the various media that can store program code such as disk.
Finally, it should be noted that：The foregoing is merely presently preferred embodiments of the present invention, is merely to illustrate the skill of the present invention
Art scheme, is not intended to limit the scope of the present invention.Any modification for being made all within the spirits and principles of the present invention,
Equivalent replacement, improvement etc., are included within the scope of protection of the present invention.
Claims (10)
1. a kind of method controlling the refrigerant that one drags more air-conditionings, is applied to cold medium controller, which is characterized in that including：
S1：The operation information of each indoor unit in more air-conditionings is dragged in acquisition one, wherein the operation information includes at least two
Indoor coil pipe value, each described indoor coil pipe value correspond to an acquisition moment, the acquisition moment and it is current when
The time difference at quarter is in preset time threshold；
S2：According at least two indoor coil pipe values of each indoor unit, judge whether deposited in each indoor unit
In at least one target indoor unit, wherein there are refrigerant accumulations in the target indoor unit, are otherwise held if so, executing S3
Row S1；
S3：Determine the target electronic expansion valve opening of each target indoor unit；
S4：According to the target electronic expansion valve opening of each target indoor unit, each target indoor unit of adjustment corresponds to
Electric expansion valve execute S1 to control the refrigerant that the outdoor unit is delivered to each target indoor unit.
2. the method that the refrigerant of more air-conditionings is dragged in control one according to claim 1, which is characterized in that further comprise：In advance
Ascending temperature threshold value and decline temperature threshold value are first set；
At least two indoor coil pipe values according to each indoor unit judge whether deposited in each indoor unit
In at least one target indoor unit, wherein there are refrigerant accumulations in the target indoor unit, including：
For indoor unit described in each, it is performed both by：According at least two indoor coil pipe values of current indoor machine, room is determined
The variation tendency of inner coil pipe temperature；
When the variation tendency of the indoor coil pipe is to rise, judge maximum in at least two indoor coil pipes value
Indoor coil pipe value whether be less than the ascending temperature threshold value, if so, determining the current indoor machine, there are refrigerant heaps
Product is the target indoor unit；
When the variation tendency of the indoor coil pipe is to decline, judge minimum in at least two indoor coil pipes value
Indoor coil pipe value whether be less than the decline temperature threshold value, if so, determining the current indoor machine, there are refrigerant heaps
Product is the target indoor unit.
3. the method that the refrigerant of more air-conditionings is dragged in control one according to claim 2, which is characterized in that further comprise：
Temperature range not higher than the ascending temperature threshold value is divided at least two ascending temperature sections, is described in each
First electronic expansion valve opening is arranged in ascending temperature section；
Temperature range not higher than the decline temperature threshold value is divided at least two decline temperature sections, is described in each
Second electronic expansion valve opening is arranged in decline temperature section；
The S3, including：
For target indoor unit described in each, it is performed both by：
When the variation tendency of the indoor coil pipe is to rise, target ascending temperature section is determined, wherein in the target
It is the ascending temperature area in at least two indoor coil pipes value where maximum indoor coil pipe value to rise temperature range
Between；
Using corresponding first electronic expansion valve opening in target ascending temperature section as the target of current goal indoor unit electricity
Sub- expansion valve opening；
When the variation tendency of the indoor coil pipe is to decline, target decline temperature section is determined, wherein under the target
Decline temperature area where the indoor coil pipe value that temperature range is minimum in at least two indoor coil pipes value drops
Between；
Using corresponding second electronic expansion valve opening in target decline temperature section as the target of current goal indoor unit electricity
Sub- expansion valve opening.
4. the method that the refrigerant of more air-conditionings is dragged in control one according to claim 1, which is characterized in that
The operation information, further comprises：Current electronic expansion valve opening；
The target electronic expansion valve opening according to each target indoor unit, each target indoor unit of adjustment correspond to
Electric expansion valve, to control the refrigerant that the outdoor unit is delivered to each target indoor unit, including：
According to target electronic expansion valve opening, the Current electronic expansion valve opening of each target indoor unit, each institute is determined
State the electric expansion valve adjustment amplitude of target indoor unit；
Amplitude is adjusted according to the electric expansion valve of each target indoor unit, adjusts the corresponding electricity of each target indoor unit
Sub- expansion valve, to control the refrigerant that the outdoor unit is delivered to each target indoor unit.
5. the method that the refrigerant of more air-conditionings is dragged in control one according to any one of claims 1-4, which is characterized in that
The operation information, further comprises：Operational mode；
After S1, before S2, further comprise：
According to the operational mode of each indoor unit, described one operational mode for dragging more air-conditionings is determined；
When described one drag more air-conditionings operational mode be refrigeration when, execute S1, when described one drag more air-conditionings operational mode be system
When hot, S2 is executed.
6. one kind one drags more air-conditionings, which is characterized in that including：Cold medium controller, outdoor unit, at least two indoor units and with it is each
The corresponding electric expansion valve of a indoor unit；The outdoor unit passes through the corresponding electric expansion valve and each interior
Machine is connected；
The cold medium controller, for executing：
S1：Acquire the operation information of each indoor unit, wherein the operation information includes at least two indoor coils
Temperature value, each described indoor coil pipe value correspond to an acquisition moment, the time at the acquisition moment and current time
Difference is in preset time threshold；
S2：According at least two indoor coil pipe values of each indoor unit, judge whether deposited in each indoor unit
In at least one target indoor unit, wherein there are refrigerant accumulations in the target indoor unit, are otherwise held if so, executing S3
Row S1；
S3：Determine the target electronic expansion valve opening of each target indoor unit；
S4：According to the target electronic expansion valve opening of each target indoor unit, each target indoor unit of adjustment corresponds to
Electric expansion valve execute S1 to control the refrigerant that the outdoor unit is delivered to each target indoor unit.
7. according to claim 6 one drags more air-conditionings, which is characterized in that
The cold medium controller is further used for that ascending temperature threshold value and decline temperature threshold value is arranged；
The cold medium controller is performed both by for being directed to each described indoor unit：According at least two Room of current indoor machine
Inner coil pipe temperature value determines the variation tendency of indoor coil pipe；When the variation tendency of the indoor coil pipe is to rise,
Judge whether maximum indoor coil pipe value is less than the ascending temperature threshold value in at least two indoor coil pipes value,
If so, determining the current indoor machine, there are refrigerants to accumulate, is the target indoor unit；When the change of the indoor coil pipe
Change trend is to judge whether indoor coil pipe value minimum in at least two indoor coil pipes value is less than institute when declining
Decline temperature threshold value is stated, there are refrigerants to accumulate, is the target indoor unit if so, determining the current indoor machine.
8. according to claim 7 one drags more air-conditionings, which is characterized in that
The cold medium controller is further used for the temperature range not higher than the ascending temperature threshold value being divided at least two
Ascending temperature section is that first electronic expansion valve opening is arranged in each described ascending temperature section；It will be not higher than described
The temperature range of decline temperature threshold value is divided at least two decline temperature sections, is each described decline temperature section setting
One the second electronic expansion valve opening；
The cold medium controller is performed both by for being directed to each described target indoor unit：
When the variation tendency of the indoor coil pipe is to rise, target ascending temperature section is determined, wherein in the target
It is the ascending temperature area in at least two indoor coil pipes value where maximum indoor coil pipe value to rise temperature range
Between；Using corresponding first electronic expansion valve opening in target ascending temperature section as the target electronic of current goal indoor unit
Expansion valve opening；
When the variation tendency of the indoor coil pipe is to decline, target decline temperature section is determined, wherein under the target
Decline temperature area where the indoor coil pipe value that temperature range is minimum in at least two indoor coil pipes value drops
Between；Using corresponding second electronic expansion valve opening in target decline temperature section as the target electronic of current goal indoor unit
Expansion valve opening.
9. according to claim 6 one drags more air-conditionings, which is characterized in that
The operation information, further comprises：Current electronic expansion valve opening；
The cold medium controller, for swollen according to target electronic expansion valve opening, the Current electronic of each target indoor unit
Swollen valve opening determines the electric expansion valve adjustment amplitude of each target indoor unit；According to each target indoor unit
Electric expansion valve adjusts amplitude, adjusts the corresponding electric expansion valve of each target indoor unit, defeated to control the outdoor unit
It send to the refrigerant of each target indoor unit.
10. one according to any in claim 6-9 drags more air-conditionings, which is characterized in that
The operation information, further comprises：Operational mode；
The cold medium controller is further used for the operational mode according to each indoor unit, determines that described one drags more air-conditionings
Operational mode；When it is refrigeration that described one, which drags the operational mode of more air-conditionings, S1 is executed, when the operation mould that described one drags more air-conditionings
When formula is heating, S2 is executed.
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