CN110425687A - A kind of refrigerant adjusting method, refrigerant adjusting controller and air-conditioning system - Google Patents
A kind of refrigerant adjusting method, refrigerant adjusting controller and air-conditioning system Download PDFInfo
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- CN110425687A CN110425687A CN201910734882.7A CN201910734882A CN110425687A CN 110425687 A CN110425687 A CN 110425687A CN 201910734882 A CN201910734882 A CN 201910734882A CN 110425687 A CN110425687 A CN 110425687A
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—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
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- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention provides a kind of refrigerant adjusting method, refrigerant adjusting controller and air-conditioning system, which includes: that at least two control sections are arranged for each operational mode；The corresponding degree of superheat is distributed for each control section and limits traffic coverage；Calculate the temperature difference between current environment temperature and set temperature；Determine restriction traffic coverage belonging to the temperature difference；The restriction traffic coverage according to belonging to the temperature difference, selected target control section；Judge whether the current degree of superheat as electronic expansion valve of indoor unit setting and the degree of superheat corresponding to target control section are consistent, if it is not, then the degree of superheat of setting is adjusted to the degree of superheat corresponding to target control section.Scheme provided by the invention realizes the coolant quantity according to circumstance of temperature difference adjustment air-conditioning system indoor unit conveying.
Description
Technical field
The present invention relates to air-conditioning technical field, in particular to a kind of refrigerant adjusting method, refrigerant adjusting controller and sky
Adjusting system.
Background technique
Air-conditioning system is that the common system freezed, heated is when air-conditioning system is run under different operating condition loads
Coolant quantity required for uniting is different.Currently, the mode master of many household single machines or multi-connected machine convertible frequency air-conditioner control coolant quantity
If controlling the aperture of expansion valve or electronic valve according to air-conditioning system operating parameter, and then realize the tune of air-conditioning system coolant quantity
Section.Due to being had a certain difference sometimes between air-conditioning system operating parameter and environment temperature, only transported by air-conditioning system
Row parameter regulation coolant quantity often leads to environment temperature overshoot.
Summary of the invention
The embodiment of the invention provides a kind of refrigerant adjusting method, refrigerant adjusting controller and air-conditioning systems, realize
According to the coolant quantity of circumstance of temperature difference adjustment air-conditioning system indoor unit conveying.
In a first aspect, the embodiment of the invention provides a kind of refrigerant adjusting methods characterized by comprising
For each operational mode, at least two control sections are set；
The corresponding degree of superheat is distributed for control section described in each and limits traffic coverage；
Further include:
Calculate the temperature difference between current environment temperature and set temperature；
Determine restriction traffic coverage belonging to the temperature difference；
According to restriction traffic coverage belonging to the temperature difference, selected target control section；
Judge the degree of superheat corresponding to the current degree of superheat and the target control section as electronic expansion valve of indoor unit setting
It is whether consistent, if it is not, then the degree of superheat of the setting is adjusted to the degree of superheat corresponding to the target control section.
Preferably, described that for each operational mode, at least two control sections are set, it is each described control section distribution
The corresponding degree of superheat, comprising:
For each operational mode, seven control sections are set；
Determine the corresponding degree of superheat of any one of control section；
1 degree is differed according to the corresponding degree of superheat of each adjacent two control section, is that other described control sections distribute corresponding mistake
Temperature.
It is preferably, described to distribute corresponding restriction traffic coverage for each described control section, comprising:
For in seven control sections the first control section distribution limit traffic coverage as (90,100]；
For in seven control sections the second control section distribution limit traffic coverage as (70,90]；
For in seven control sections third control section distribution limit traffic coverage as (40,70]；
For in seven control sections the 4th control section distribution limit traffic coverage as (20,40]；
For in seven control sections the 5th control section distribution limit traffic coverage as (10,20]；
For in seven control sections the 6th control section distribution limit traffic coverage as (5,10]；
Traffic coverage is limited as [0,5] for the 7th control section distribution in seven control sections；
Wherein, the demand degree of the value characterization indoor unit limited in traffic coverage.
Preferably, restriction traffic coverage belonging to the determination temperature difference, comprising:
For refrigeration mode,
Using following demand degree calculation formula, corresponding demand degree is determined for the temperature difference；
Wherein, Δ T characterizes the temperature difference between current environment temperature and set temperature；DL characterizes demand degree；
Search restriction traffic coverage belonging to the demand degree.
Preferably, restriction traffic coverage belonging to the determination temperature difference, comprising:
For heating mode,
Using following demand degree calculation formula, corresponding demand degree is determined for the temperature difference；
Wherein, Δ T characterizes the temperature difference between current environment temperature and set temperature；DL characterizes demand degree；
Search restriction traffic coverage belonging to the demand degree.
Preferably,
The value range of the degree of superheat is the integer in [0,6].
Second aspect, the embodiment of the present invention provide a kind of refrigerant adjusting controller, comprising: setting and allocation unit, control
Duan Xuanding unit and degree of superheat adjustment unit, wherein
The setting and allocation unit, at least two control sections to be arranged for each operational mode；For each institute
Control section is stated to distribute the corresponding degree of superheat and limit traffic coverage；
The control section selectes unit, for calculating the temperature difference between current environment temperature and set temperature；According to institute
It states setting and allocation unit to be the corresponding degree of superheat of each described control section distribution and limit traffic coverage, calmly the temperature difference
Belonging restriction traffic coverage；According to restriction traffic coverage belonging to the temperature difference, selected target control section；
The degree of superheat adjustment unit, for judging the current degree of superheat and the control as electronic expansion valve of indoor unit setting
Whether the degree of superheat corresponding to the selected target control section of the selected unit of section processed is consistent, if it is not, then by the setting
The degree of superheat is adjusted to the degree of superheat corresponding to the target control section.
Preferably, the setting and allocation unit, are used for:
For each operational mode, seven control sections are set；Determine the corresponding degree of superheat of any one of control section；Root
1 degree is differed according to the corresponding degree of superheat of each adjacent two control section, is that other described control sections distribute the corresponding degree of superheat；It is described
In seven control sections the first control section distribution limit traffic coverage as (90,100]；For the second control in seven control sections
Section processed distribution limit traffic coverage as (70,90]；Traffic coverage is limited for the third control section distribution in seven control sections
For (40,70]；For in seven control sections the 4th control section distribution limit traffic coverage as (20,40]；It is described seven
In control section the 5th control section distribution limit traffic coverage as (10,20]；For the 6th control section in seven control sections
Distribution limit traffic coverage as (5,10]；For in seven control sections the 7th control section distribution limit traffic coverage as [0,
5]；Wherein, the demand degree of the value characterization indoor unit limited in traffic coverage.
Preferably,
The control section selectes unit, is the temperature difference using following demand degree calculation formula for being directed to refrigeration mode
Determine corresponding demand degree；
Wherein, Δ T characterizes the temperature difference between current environment temperature and set temperature；DL characterizes demand degree；
Search restriction traffic coverage belonging to the demand degree.
Preferably,
The control section selectes unit, is the temperature difference using following demand degree calculation formula for being directed to heating mode
Determine corresponding demand degree；
Wherein, Δ T characterizes the temperature difference between current environment temperature and set temperature；DL characterizes demand degree；
Search restriction traffic coverage belonging to the demand degree.
The third aspect, the embodiment of the present invention provide a kind of air-conditioning system, comprising: any of the above-described refrigerant adjusts control
Device, outdoor unit and at least one indoor unit for being connected to the outdoor unit, wherein
The refrigerant adjusting controller is connected to the outdoor unit, is each described interior for regulating and controlling the outdoor unit
The coolant quantity of machine conveying.
The embodiment of the invention provides a kind of refrigerant adjusting method, refrigerant adjusting controller and air-conditioning system, the refrigerants
Adjusting method is by being arranged at least two control sections for each operational mode；The corresponding degree of superheat is distributed for each control section
And limit traffic coverage；Calculate the temperature difference between current environment temperature and set temperature；Determine restriction belonging to the temperature difference
Traffic coverage；The restriction traffic coverage according to belonging to the temperature difference, selected target control section；Judge current as indoor unit electronic expansion
Whether the degree of superheat and the degree of superheat corresponding to target control section of valve setting are consistent, if it is not, then the degree of superheat of setting is adjusted
For the degree of superheat corresponding to target control section.Realize the coolant quantity according to circumstance of temperature difference adjustment air-conditioning system indoor unit conveying.
Detailed description of the invention
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 technical 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 a kind of flow chart for refrigerant adjusting method that one embodiment of the invention provides；
Fig. 2 be another embodiment of the present invention provides another refrigerant adjusting method flow chart；
Fig. 3 is a kind of structural schematic diagram for refrigerant adjusting controller that one embodiment of the invention provides；
Fig. 4 be another embodiment of the present invention provides a kind of air-conditioning system structural schematic diagram.
Specific embodiment
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
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
As shown in Figure 1, the embodiment of the invention provides a kind of refrigerant adjusting method, refrigerant adjusting method specific implementation step
Suddenly can include:
Step 101: for each operational mode, at least two control sections are set；
Step 102: distributing the corresponding degree of superheat for each control section and limit traffic coverage；
Step 103: calculating the temperature difference between current environment temperature and set temperature；
Step 104: determining restriction traffic coverage belonging to the temperature difference；
Step 105: the restriction traffic coverage according to belonging to the temperature difference, selected target control section；
Step 106: judging mistake corresponding to the current degree of superheat and target control section as electronic expansion valve of indoor unit setting
Whether temperature is consistent, if so, thening follow the steps 107；Otherwise, step 108 is executed；
Step 107: keeping the current degree of superheat, and terminate current process；
Step 108: the degree of superheat of setting is adjusted to the degree of superheat corresponding to target control section.
It is to be appreciated that above-mentioned steps 101 to step 108, which are continuously circulated, to be run, in air-conditioning system operational process to protect
The degree of superheat of card electronic expansion valve of indoor unit can be adjusted at the moment according to the temperature difference between environment temperature and set temperature.
The above-mentioned value limited in traffic coverage runs the demand degree to refrigerant as indoor unit.
Above-mentioned control section and for control section distribution the degree of superheat be after study repetition test obtain comparison it is reasonable as a result,
It realizes accurately to regulate and control coolant quantity while simplifying operation.
In the embodiment shown in fig. 1, method is by being arranged at least two control sections for each operational mode；It is each
A control section distributes the corresponding degree of superheat and limits traffic coverage；Calculate the temperature between current environment temperature and set temperature
Difference；Determine restriction traffic coverage belonging to the temperature difference；The restriction traffic coverage according to belonging to the temperature difference, selected target control section；
Judge whether the current degree of superheat as electronic expansion valve of indoor unit setting and the degree of superheat corresponding to target control section are consistent, if
It is no, then the degree of superheat of setting is adjusted to the degree of superheat corresponding to target control section.It realizes and adjusts air-conditioning according to circumstance of temperature difference
The coolant quantity of system indoor unit conveying.
In an alternative embodiment of the invention, in order to more accurately be that control section distributes the corresponding degree of superheat, made
Temperature can be relatively good regulation coolant quantity to be precisely controlled environment temperature, studied repeatedly by the present inventor and real
It tests, finally determines, the specific real-time mode of above-mentioned steps 101 and step 102 can be to be arranged seven for each operational mode
Control section；Determine the corresponding degree of superheat of any one control section；According to the corresponding degree of superheat difference 1 of each adjacent two control section
Degree distributes the corresponding degree of superheat for other control sections.For example, control section is K1, K2, K3, K4, K5, K6 and K7, wherein K1
It is increased to the corresponding degree of superheat sequence of K7, then after determining that the corresponding degree of superheat of K6 is a1, then the corresponding degree of superheat of K7 is a1+1,
The corresponding degree of superheat of K5 is a1-1, and the corresponding degree of superheat of K4 is a1-2, and the corresponding degree of superheat of K3 is a1-3, the corresponding degree of superheat of K2
For a1-4, the corresponding degree of superheat of K1 is a1-5.
The above-mentioned degree of superheat is determined according to the corresponding restriction traffic coverage of each control section after all, passes through control
This median of section processed establishes being associated between the degree of superheat and restriction traffic coverage, corresponding relationship can be made to establish easier.
It is in an alternative embodiment of the invention, above-mentioned that for each described control section to distribute corresponding restriction traffic coverage specific
Divide can include: be the first control section in seven control sections distribute limit traffic coverage as (90,100]；For seven control sections
In the second control section distribution limit traffic coverage as (70,90]；Fortune is limited for the third control section distribution in seven control sections
Row section be (40,70]；For in seven control sections the 4th control section distribution limit traffic coverage as (20,40]；It is controlled for seven
In section processed the 5th control section distribution limit traffic coverage as (10,20]；Limit is distributed for the 6th control section in seven control sections
Determine traffic coverage be (5,10]；Traffic coverage is limited as [0,5] for the 7th control section distribution in seven control sections；Wherein, it limits
Determine the demand degree of the value characterization indoor unit in traffic coverage.
104 specific implementation of above-mentioned steps can be divided into two parts, and a part is, for refrigeration mode, another part is needle
To heating mode.
For refrigeration mode,
Using following demand degree calculation formula, corresponding demand degree is determined for the temperature difference；
Wherein, Δ T characterizes the temperature difference between current environment temperature and set temperature；DL characterizes demand degree；
Restriction traffic coverage belonging to lookup demand degree.
For heating mode,
Using following demand degree calculation formula, corresponding demand degree is determined for the temperature difference；
Wherein, Δ T characterizes the temperature difference between current environment temperature and set temperature；DL characterizes demand degree；
Restriction traffic coverage belonging to lookup demand degree.
The value range of the above-mentioned degree of superheat is the integer in [0,6].It is worth noting that the ability when some indoor unit needs
Ask bigger, when demand degree is also bigger, the value of the degree of superheat is smaller, in comparison corresponding indoor unit expansion valve is just opened bigger,
More refrigerants are namely distributed to the indoor unit, can just progressively reach the effect of setting；When the ability need of some indoor unit
Smaller, demand degree DL is also smaller, and the degree of superheat is bigger, in comparison corresponding indoor unit expansion valve is just opened smaller, that is,
Less refrigerant is distributed to the indoor unit, can achieve the effect that setting.
In order to clearly demonstrate refrigerant adjusting method, four indoor units are connected with an outdoor unit below, respectively
Explanation is unfolded for four indoor unit regulation coolant quantities.Wherein, outdoor unit is write a Chinese character in simplified form ODU with host and is indicated in embodiment, indoor
Machine is write a Chinese character in simplified form IDU1, IDU2, IDU3 and IDU4 respectively with slave and is indicated.The ginseng of each indoor unit IDU1, IDU2, IDU3 and IDU4
The information such as number, state or control are transmitted to outdoor unit ODU, and the refrigerant adjusting controller control in outdoor unit is logical with each indoor unit
News, and calculate the demand degree of each indoor unit, spend determining control section according to demand, target superheat degree and root are determined according to control section
Factually the border degree of superheat and the current aperture of expansion valve and target step number etc. judge whether that expansion valve is adjusted, to be adjusted to
The coolant quantity of indoor unit input.As shown in Fig. 2, the refrigerant adjusting method implements step can include:
Step 201: seven control sections of setting simultaneously determine the corresponding degree of superheat of seven control sections respectively and limit traffic coverage；
The detailed process for determining the corresponding degree of superheat of seven control sections can be the corresponding overheat of any one determining control section
Degree；1 degree is differed according to the corresponding degree of superheat of each adjacent two control section, distributes the corresponding degree of superheat for other control sections.For example,
Determining that the degree of superheat is 0 for the first control section, then the second control section determines that the degree of superheat is 1, and third control section determines that the degree of superheat is 2,
Then the 4th control section determines that the degree of superheat is 3, and the 5th control section determines that the degree of superheat is 4, and the 6th control section determines that the degree of superheat is 5, then
7th control section determines that the degree of superheat is 6.First control section distribution limit traffic coverage as (90,100]；Second control section distribution limit
Determine traffic coverage be (70,90]；Third control section distribution limit traffic coverage as (40,70]；The distribution of 4th control section limits fortune
Row section be (20,40]；5th control section distribution limit traffic coverage as (10,20]；The distribution of 6th control section limits Operational Zone
Between for (5,10]；7th control section distribution limits traffic coverage as [0,5], then limit traffic coverage (90,100] correspondence the degree of superheat
It is 0；Limit traffic coverage (70,90] the corresponding degree of superheat is 1；Limit traffic coverage (40,70] the corresponding degree of superheat is 2；Limit fortune
Row section be (20,40] the corresponding degree of superheat is 3；Limit traffic coverage as (10,20] the corresponding degree of superheat is 4；Limit traffic coverage
For (5,10] the corresponding degree of superheat is 5；0 limit traffic coverage as [0,5] corresponding degree of superheat be 6.
Step 202: calculating the temperature difference between current environment temperature and set temperature；
The environment temperature that the sensor on indoor unit detects can be directly used in the environment temperature.
Step 203: determining restriction traffic coverage belonging to the temperature difference；
For example, IDU1 and IDU3 is being run in a chiller mode, IDU2 is being run with air supply pattern, and IDU4 is off-mode.
Then IDU2 is because running air supply pattern, and demand degree is zero as IDU4, and expansion valve is pass always, without adjusting.Sending
Under wind mode or off-mode, demand degree is zero, and expansion valve is pass always, without adjusting.And in refrigeration mode and heating
Expansion valve adjustment is carried out under mode, just to adjust coolant quantity.
The step specific implementation:
For refrigeration mode,
Using following demand degree calculation formula, corresponding demand degree is determined for the temperature difference；
Wherein, Δ T characterizes the temperature difference between current environment temperature and set temperature；DL characterizes demand degree；
For heating mode,
Using following demand degree calculation formula, corresponding demand degree is determined for the temperature difference；
Wherein, Δ T characterizes the temperature difference between current environment temperature and set temperature；DL characterizes demand degree；
Restriction traffic coverage belonging to lookup demand degree.
In addition, being directed to refrigeration mode, as Δ T≤- 1, DL=0.For heating mode, as Δ T >=1, DL=0.
Step 204: the restriction traffic coverage according to belonging to the temperature difference, selected target control section；
Step 205: judging mistake corresponding to the current degree of superheat and target control section as electronic expansion valve of indoor unit setting
Whether temperature is consistent, if so, thening follow the steps 206；Otherwise, step 207 is executed；
Step 206: keeping the current degree of superheat, and terminate current process；
Step 207: the degree of superheat of setting is adjusted to the degree of superheat corresponding to target control section.
Such as: the set temperature (hereinafter referred to as Ts) of the IDU1 run under refrigeration mode is 26 DEG C, when booting, this room
Indoor environment temperature (hereinafter referred to as Tr) is 30 DEG C, and obtaining demand angle value according to above-mentioned refrigeration mode calculation formula is 100, corresponding
Above first control section, the corresponding degree of superheat are 0；The ability need of IDU1 is larger at this time, the practical mistake of the expansion valve of IDU1
Temperature is approached to the corresponding degree of superheat of the first control section, because the corresponding degree of superheat of the first control section is smaller, machine operating ratio
Long period, practical super heat value can just approach and in the corresponding degree of superheat of the first control section (0) fluctuation within a narrow range nearby, IDU1
Expansion valve aperture it is bigger, flow to the indoor unit cold medium flux also compare it is larger；
After running a period of time, if Tr drops to 29 DEG C, demand angle value becomes 90, and corresponding above second control section is right
The degree of superheat answered becomes 1 from 0；Because the corresponding degree of superheat of the second control section becomes larger, the practical overheat of the expansion valve of IDU1 at this time
The degree of superheat corresponding less than the second control section is spent, and is approached to the corresponding degree of superheat of the second control section, will lead to opening for expansion valve
Degree gradually turns down, and the cold medium flux for flowing to IDU1 also becomes smaller, and it is also slack-off that Tr reduces speed, and then DL also gradually becoming smaller slowly,
That is the ability need of IDU1 is smaller and smaller；
After running a period of time, if Tr drops to 26.8 DEG C, demand degree becomes 34, and corresponding above 4th control section is right
The degree of superheat answered becomes 3；Because the corresponding degree of superheat of the 4th control section becomes larger, the practical degree of superheat of the expansion valve of IDU1 is small at this time
In the corresponding degree of superheat of the 4th control section, is approached to the corresponding degree of superheat of the 4th control section, the aperture of expansion valve is caused gradually to be closed
Small, the cold medium flux for flowing to IDU1 also becomes smaller, and it is also slack-off that Tr reduces speed, and then DL also gradually becoming smaller slowly, the energy of IDU1
Power demand is smaller and smaller；
After running a period of time, if Tr drops to 26.6 DEG C, DL value becomes 28, and corresponding above 4th control section corresponds to
The degree of superheat remain as 3；It is constant to be maintained at the 4th control section；
After running a period of time, if Tr drops to 26.5 DEG C, DL value becomes 25, and corresponding above 5th control section is right
The degree of superheat answered remains as 3；It is constant to be maintained at the 4th control section；
After running a period of time, if Tr drops to 25.5 DEG C, DL value becomes 5, and corresponding above 7th control section is corresponding
The degree of superheat also correspondingly becomes 6；Because the corresponding degree of superheat of the 7th control section becomes larger, the practical overheat of the expansion valve of IDU1 at this time
Spend corresponding less than the 7th control section degree of superheat, approached to the corresponding degree of superheat of the 7th control section, cause the aperture of expansion valve by
It gradually turns down, the cold medium flux for flowing to IDU1 also becomes smaller, and Tr is slowly reduced；
But after the practical degree of superheat is more than target superheat degree, the expansion valve opening of IDU1 can slowly be held greatly again, flow to IDU1
Cold medium flux also will increase, Tr may be increased slowly at this time, after the expansion valve of IDU1, which is opened, arrives a certain aperture greatly,
The practical degree of superheat can be approached lower than target superheat degree and to target superheat degree again, and the aperture of expansion valve gradually turns down again, be flowed to
The cold medium flux of IDU1 also becomes smaller, and Tr is slowly reduced again；
And so on, the Tr of IDU1 can nearby very a small range fluctuates at 26 DEG C, IDU1 to the ability need of outdoor unit very
It is low；If the Tr of IDU3 is also dropped near set temperature at this time, compressor only needs very low ability to maintain current shape
State, but not will lead to system-down.
It is worth noting that refrigerant adjusting method provided by the invention is also applied for the change that outdoor unit connects single indoor unit
Frequency air-conditioning.
As shown in figure 3, the embodiment of the present invention provides a kind of refrigerant adjusting controller, comprising: setting with allocation unit 301,
Control section selectes unit 302 and degree of superheat adjustment unit 303, wherein
Setting and allocation unit 301, at least two control sections to be arranged for each operational mode；For each control
Section distributes the corresponding degree of superheat and limits traffic coverage；
Control section selectes unit 302, for calculating the temperature difference between current environment temperature and set temperature；According to setting
It is the corresponding degree of superheat of each control section distribution and restriction traffic coverage with allocation unit 301, determines belonging to the temperature difference
Limit traffic coverage；The restriction traffic coverage according to belonging to the temperature difference, selected target control section；
Degree of superheat adjustment unit 303, for judging the current degree of superheat and control section as electronic expansion valve of indoor unit setting
Whether the degree of superheat corresponding to the selected target control section of selected unit 302 is consistent, if it is not, then the degree of superheat of setting is adjusted
For the degree of superheat corresponding to target control section.
In an alternative embodiment of the invention, setting and allocation unit 301, for seven controls to be arranged for each operational mode
Section processed；Determine the corresponding degree of superheat of any one of control section；According to the corresponding degree of superheat difference 1 of each adjacent two control section
Degree distributes the corresponding degree of superheat for other control sections；For in seven control sections the first control section distribution limit traffic coverage as
(90,100]；For in seven control sections the second control section distribution limit traffic coverage as (70,90]；For in seven control sections
Third control section distribution limit traffic coverage as (40,70]；Operational Zone is limited for the 4th control section distribution in seven control sections
Between for (20,40]；For in seven control sections the 5th control section distribution limit traffic coverage as (10,20]；For seven control sections
In the 6th control section distribution limit traffic coverage as (5,10]；Operation is limited for the 7th control section distribution in seven control sections
Section is [0,5]；Wherein, the demand degree of the value characterization indoor unit in traffic coverage is limited.
In an alternative embodiment of the invention, control section selectes unit 302, for being directed to refrigeration mode, utilizes following demands
Calculation formula is spent, determines corresponding demand degree for the temperature difference；
Wherein, Δ T characterizes the temperature difference between current environment temperature and set temperature；DL characterizes demand degree；
Search restriction traffic coverage belonging to the demand degree.
In an alternative embodiment of the invention, control section selectes unit 302, for being directed to heating mode, utilizes following demands
Calculation formula is spent, determines corresponding demand degree for the temperature difference；
Wherein, Δ T characterizes the temperature difference between current environment temperature and set temperature；DL characterizes demand degree；
Restriction traffic coverage belonging to lookup demand degree.
The value range of the above-mentioned degree of superheat is the integer in [0,6].
The contents such as the information exchange between each unit, implementation procedure in above-mentioned apparatus, due to implementing with present system
Example is based on same design, and particular content can be found in the narration in present system embodiment, and details are not described herein again.
As shown in figure 4, the embodiment of the present invention provides a kind of air-conditioning system, which includes: any of the above-described described
Refrigerant adjusting controller 401, outdoor unit 402 and at least one indoor unit 403 for being connected to outdoor unit 402, wherein
Refrigerant adjusting controller 401 is connected to outdoor unit 402, is that each indoor unit 403 is defeated for regulating and controlling outdoor unit 402
The coolant quantity sent.
The embodiment of the invention provides a kind of readable mediums, including execute instruction, when the processor of storage control executes
It is described when executing instruction, the storage control execute it is provided in an embodiment of the present invention it is any can equipment identification method.
The embodiment of the invention provides a kind of refrigerant adjusting controllers, comprising: processor, memory and bus；
The memory is executed instruction for storing, and the processor is connect with the memory by the bus, when
When the refrigerant adjusting controller is run, the processor executes the described of memory storage and executes instruction, so that described
Refrigerant adjusting controller executes any refrigerant adjusting method provided in an embodiment of the present invention.
The each embodiment of the present invention at least has the following beneficial effects:
1, in embodiments of the present invention, by the way that at least two control sections are arranged for each operational mode；For each control
Section processed distributes the corresponding degree of superheat and limits traffic coverage；Calculate the temperature difference between current environment temperature and set temperature；
Determine restriction traffic coverage belonging to the temperature difference；The restriction traffic coverage according to belonging to the temperature difference, selected target control section；Judgement
Whether the current degree of superheat set for electronic expansion valve of indoor unit and the degree of superheat corresponding to target control section are consistent, if not,
The degree of superheat of setting is then adjusted to the degree of superheat corresponding to target control section.It realizes and adjusts air-conditioning system according to circumstance of temperature difference
The coolant quantity of indoor unit conveying.
2, seven control sections in embodiments of the present invention, are set for each operational mode；Determine any one control section
The corresponding degree of superheat；1 degree is differed according to the corresponding degree of superheat of each adjacent two control section, distributes corresponding mistake for other control sections
Temperature.The corresponding degree of superheat more accurately can be distributed for control section, the regulation coolant quantity for keeping the degree of superheat relatively good with
It is precisely controlled environment temperature.
3, in embodiments of the present invention, the degree of superheat is true according to the corresponding restriction traffic coverage of each control section after all
It fixes, by control section, this median establishes being associated between the degree of superheat and restriction traffic coverage, can make corresponding pass
System establishes easier.
It should be noted that, in this document, 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 for including a series of elements not only includes those elements,
It but also including 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 one ", is not arranged
Except there is also other identical factors in the process, method, article or apparatus that includes the element.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above method embodiment can pass through
The relevant hardware of program instruction is completed, and program above-mentioned can store 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 disk 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, it is merely to illustrate skill of the 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 refrigerant adjusting method characterized by comprising
For each operational mode, at least two control sections are set；
The corresponding degree of superheat is distributed for control section described in each and limits traffic coverage；
Further include:
Calculate the temperature difference between current environment temperature and set temperature；
Determine restriction traffic coverage belonging to the temperature difference；
According to restriction traffic coverage belonging to the temperature difference, selected target control section；
Whether judge the degree of superheat corresponding to the current degree of superheat and the target control section as electronic expansion valve of indoor unit setting
Unanimously, if it is not, then the degree of superheat of the setting is adjusted to the degree of superheat corresponding to the target control section.
2. refrigerant adjusting method according to claim 1, which is characterized in that described to be arranged at least for each operational mode
Two control sections are that each described control section distributes the corresponding degree of superheat, comprising:
For each operational mode, seven control sections are set；
Determine the corresponding degree of superheat of any one of control section；
1 degree is differed according to the corresponding degree of superheat of each adjacent two control section, is that other described control sections distribute the corresponding degree of superheat.
3. refrigerant adjusting method according to claim 2, which is characterized in that described for each control section distribution pair
The restriction traffic coverage answered, comprising:
For in seven control sections the first control section distribution limit traffic coverage as (90,100]；
For in seven control sections the second control section distribution limit traffic coverage as (70,90]；
For in seven control sections third control section distribution limit traffic coverage as (40,70]；
For in seven control sections the 4th control section distribution limit traffic coverage as (20,40]；
For in seven control sections the 5th control section distribution limit traffic coverage as (10,20]；
For in seven control sections the 6th control section distribution limit traffic coverage as (5,10]；
Traffic coverage is limited as [0,5] for the 7th control section distribution in seven control sections；
Wherein, the demand degree of the value characterization indoor unit limited in traffic coverage.
4. refrigerant adjusting method according to claim 3, which is characterized in that restriction belonging to the determination temperature difference
Traffic coverage, comprising:
For refrigeration mode,
Using following demand degree calculation formula, corresponding demand degree is determined for the temperature difference；
Wherein, Δ T characterizes the temperature difference between current environment temperature and set temperature；DL characterizes demand degree；
Search restriction traffic coverage belonging to the demand degree.
5. refrigerant adjusting method according to claim 3, which is characterized in that restriction belonging to the determination temperature difference
Traffic coverage, comprising:
For heating mode,
Using following demand degree calculation formula, corresponding demand degree is determined for the temperature difference；
Wherein, Δ T characterizes the temperature difference between current environment temperature and set temperature；DL characterizes demand degree；
Search restriction traffic coverage belonging to the demand degree.
6. refrigerant adjusting method according to any one of claims 1 to 5, which is characterized in that
The value range of the degree of superheat is the integer in [0,6].
7. a kind of refrigerant adjusting controller characterized by comprising setting selectes unit and mistake with allocation unit, control section
Temperature adjustment unit, wherein
The setting and allocation unit, at least two control sections to be arranged for each operational mode；For control described in each
Section processed distributes the corresponding degree of superheat and limits traffic coverage；
The control section selectes unit, for calculating the temperature difference between current environment temperature and set temperature；It is set according to described
Setting with allocation unit is the corresponding degree of superheat of each described control section distribution and restriction traffic coverage, determines the temperature difference institute
The restriction traffic coverage belonged to；According to restriction traffic coverage belonging to the temperature difference, selected target control section；
The degree of superheat adjustment unit, for judging the current degree of superheat and the control section as electronic expansion valve of indoor unit setting
Whether the degree of superheat corresponding to the selected target control section of selected unit is consistent, if it is not, then by the overheat of the setting
Degree is adjusted to the degree of superheat corresponding to the target control section.
8. refrigerant adjusting controller according to claim 7, which is characterized in that the setting and allocation unit are used for:
For each operational mode, seven control sections are set；Determine the corresponding degree of superheat of any one of control section；According to every
Two neighboring control section is 1 degree of degree of superheat difference corresponding, is that other described control sections distribute the corresponding degree of superheat；It is described seven
In control section the first control section distribution limit traffic coverage as (90,100]；For the second control section in seven control sections
Distribution limit traffic coverage as (70,90]；For in seven control sections third control section distribution limit traffic coverage as
(40,70]；For in seven control sections the 4th control section distribution limit traffic coverage as (20,40]；It is controlled for described seven
In section processed the 5th control section distribution limit traffic coverage as (10,20]；For the 6th control section in seven control sections point
With limit traffic coverage as (5,10]；Traffic coverage is limited as [0,5] for the 7th control section distribution in seven control sections；
Wherein, the demand degree of the value characterization indoor unit limited in traffic coverage.
9. refrigerant adjusting controller according to claim 8, which is characterized in that
The control section selectes unit, for being directed to refrigeration mode, using following demand degree calculation formula, determines for the temperature difference
Corresponding demand degree；
Wherein, Δ T characterizes the temperature difference between current environment temperature and set temperature；DL characterizes demand degree；
Search restriction traffic coverage belonging to the demand degree；
And/or
The control section selectes unit, for being directed to heating mode, using following demand degree calculation formula, determines for the temperature difference
Corresponding demand degree；
Wherein, Δ T characterizes the temperature difference between current environment temperature and set temperature；DL characterizes demand degree；
Search restriction traffic coverage belonging to the demand degree.
10. a kind of air-conditioning system characterized by comprising any refrigerant adjusting controller of claim 7 to 9, outdoor
Machine and at least one indoor unit for being connected to the outdoor unit, wherein
The refrigerant adjusting controller is connected to the outdoor unit, is that each described indoor unit is defeated for regulating and controlling the outdoor unit
The coolant quantity sent.
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