CN113899051B - Multi-split control method, control device and multi-split - Google Patents
Multi-split control method, control device and multi-split Download PDFInfo
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- CN113899051B CN113899051B CN202111262697.6A CN202111262697A CN113899051B CN 113899051 B CN113899051 B CN 113899051B CN 202111262697 A CN202111262697 A CN 202111262697A CN 113899051 B CN113899051 B CN 113899051B
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000006073 displacement reaction Methods 0.000 claims description 36
- 238000004590 computer program Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 20
- 238000010586 diagram Methods 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
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- 125000004122 cyclic group Chemical group 0.000 description 1
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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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
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
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- Mathematical Physics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The application provides a multi-split control method, a control device and a multi-split, wherein the multi-split control method comprises the steps of determining the starting sequence of a configuration modules according to the running frequency of the multi-split; determining the number n of the configuration modules to be operated according to the internal unit capacity b and the external unit capacity of the starting machine; and sequentially operating the configuration modules according to the starting sequence and the number n of the configuration modules needing to be operated. The embodiment of the application solves the problem of low operation efficiency caused by the fact that the multi-split air conditioner cannot control the operation of the configuration module according to the starting load demand.
Description
Technical Field
The application relates to the technical field of air conditioner control, in particular to a multi-split control method, a multi-split control device and a multi-split.
Background
In a multi-module multi-split system, each module operates in an energy efficiency optimal area. If the same module operation sequence or operation number is adopted for different load demands when the multi-split air conditioner is started, the optimal operation efficiency cannot be achieved, and energy waste is caused.
Disclosure of Invention
The application solves the problems that: the multi-split air conditioner cannot control the operation of the configuration module according to the starting load requirement, so that the problem of low operation efficiency is caused.
In order to solve the above problems, in one aspect, the present application provides a multi-split control method, including: determining the starting sequence of a configuration modules according to the running frequency of the multi-split air conditioner; determining the number n of the configuration modules to be operated according to the internal unit capacity b and the external unit capacity of the starting machine; sequentially operating the configuration modules according to the starting sequence and the number n of the configuration modules to be operated; wherein a > 1.
Compared with the prior art, the technical effect that this embodiment can reach is: determining a starting sequence of a configuration modules, and preferentially starting the configuration module with highest operation efficiency under any operation frequency so as to improve the energy efficiency ratio of the multi-split air conditioner; and determining the number n of the configuration modules to be operated according to the internal unit capacity b and the external unit capacity of the power-on, avoiding the energy waste caused by the excessive number of the configuration modules to be operated, further improving the energy efficiency ratio of the multi-split air conditioner and achieving the optimal operation efficiency.
In one embodiment of the present application, determining a starting sequence of the a configuration modules according to the operation frequency of the multi-split air conditioner includes; dividing the multi-split air conditioner into a plurality of operation frequency intervals, and determining the starting sequence of a configuration modules according to the operation frequency intervals where the operation frequencies of the multi-split air conditioner are located; wherein the plurality of operation frequency intervals comprise: a low frequency region N1, a middle-low frequency region N2, a middle-high frequency region N3, and a high frequency region N4.
The technical effects that this embodiment can reach are: the multi-split air conditioner is divided into a plurality of frequency intervals, so that starting sequences under different frequencies can be effectively distinguished, and the more the number of the frequency intervals is, the more accurate a configuration module with optimal operation efficiency under the current frequency is determined; low frequency region N 1 N in low and medium frequency region 2 N in the medium-high frequency region 3 High frequency region N 4 The method is a common frequency band, so that the control method of the multi-split air conditioner can effectively control the operation quantity and sequence of the configuration modules in daily use of the multi-split air conditioner, and the operation efficiency is improved.
In one embodiment of the present application, the determining the starting sequence of the a configuration modules according to the operation frequency of the multi-split air conditioner includes: in a low-frequency region N1, a configuration modules determine the sequence of the running frequency from large to small according to the sequence of the compressor displacement from small to large, and the starting sequence is obtained; and/or in the middle-low frequency region N2, determining the sequence of the operation frequency from large to small according to the sequence of the heat exchange area of the heat exchanger by a configuration module, and obtaining the starting sequence; and/or in the medium-high frequency region N3, a configuration modules jointly determine the running frequency sequence according to the heat exchange area size of the heat exchanger and the displacement of the compressor, so as to obtain the starting sequence; and/or in the high-frequency region N4, the a configuration modules jointly determine the operation frequency sequence according to the heat exchange area size and the heat exchange air quantity of the heat exchanger, so as to obtain the starting sequence.
The technical effects that this embodiment can reach are: in a low-frequency area, the exhaust of the compressor is less, so that the configuration module corresponding to the external machine with low compressor discharge capacity is started preferentially, and the energy-saving effect can be achieved; in the middle-low frequency region, the exhaust gas of the compressor is still less, but the heat exchange requirement is improved, so that the configuration module with larger heat exchange area of the heat exchanger is preferentially started, the heat exchange efficiency can be effectively improved, and the energy-saving effect is achieved; in a medium-high frequency region, the exhaust requirement of the compressor is increased, so that the configuration module with large compressor discharge capacity is started on the basis of selecting a larger heat exchange area of the heat exchanger, and the energy-saving effect can be achieved; in the high frequency region, the larger heat exchange air volume determines whether the high frequency operation can be stabilized, so that the configuration module with the large heat exchange air volume is started on the basis of selecting the larger heat exchange area of the heat exchanger, and the energy-saving effect can be achieved.
In one embodiment of the present application, the determining the number n of the configuration modules to be operated according to the internal unit capacity b and the external unit capacity b includes: if b is less than or equal to x 1 *b 1 The number of configuration modules that need to be run n=1; wherein b 1 Outer machine capacity, x, being minimum compressor displacement 1 Is constant.
The technical effects that this embodiment can reach are: when the internal machine capacity b is smaller than or equal to the external machine capacity with the minimum compressor displacement, the knot is formedCoefficient of synthesis x 1 The requirement of the compressor displacement can be met by opening any configuration module, so that the number n=1 of the configuration modules to be operated at the moment can play a role in energy saving.
In one embodiment of the present application, the determining the number n of the configuration modules to be operated according to the internal unit capacity b and the external unit capacity b includes: if x is satisfied 1 *b 1 ＜b≤x 2 * (b 1 +b 4 ) The number of configuration modules that need to be run n=2; wherein b 1 B, the capacity of the external machine with minimum compressor displacement 4 The capacity of the external machine, x, being the maximum displacement of the compressor 1 、x 2 Is constant.
The technical effects that this embodiment can reach are: binding coefficient x 2 When the capacity b of the internal machine meets that b is less than or equal to x 2 *(b 1 +b 4 ) When the compressor is started, any two configuration modules can meet the requirement of the compressor displacement, so that the quantity n=2 of the configuration modules which need to be operated at the moment can play a role in energy conservation.
In one embodiment of the present application, the determining the number n of the configuration modules to be operated according to the internal unit capacity b and the external unit capacity b includes: if x is satisfied 2 *(b 1 +b 4 )＜b＜ x 3 *(b 1 +b 2 +b 3 ) The number of configuration modules that need to be run n=3; wherein b 1 、b 2 、b 3 B, three outer machine capacities with minimum compressor displacement 1 、b 2 、b 3 The corresponding compressor displacement increases in turn; x is x 2 、x 3 Is constant.
The technical effects that this embodiment can reach are: binding coefficient x 3 When the capacity b of the internal machine meets that b is less than or equal to x 3 *(b 1 +b 2 +b 3 ) When the compressor is started, any three configuration modules can meet the requirement of the compressor displacement, so that the number n=3 of the configuration modules which need to be operated at the moment can play a role in energy conservation.
In one embodiment of the applicationIn an embodiment, determining the number n of the configuration modules to be operated according to the internal unit capacity b and the external unit capacity b of the power on includes: if x is satisfied 3 *b M-1 B is less than or equal to the number n=M of the configuration modules needing to be operated; wherein b M-1 The sum of the capacities of M-1 external machines with the minimum compressor displacement is used; x is x 3 Is constant.
The technical effects that this embodiment can reach are: binding coefficient x 3 When the capacity b of the internal machine meets x 3 *b M-1 And b, at least M configuration modules are required to be started at the moment to meet the requirement of the compressor displacement.
In one embodiment of the present application, the sequentially operating the configuration modules according to the start-up sequence and the number n of the configuration modules to be operated includes: and preferentially starting n configuration modules with highest operation efficiency in a configuration modules, continuously operating the first n-1 configuration modules with highest operation efficiency in the a configuration modules, switching the rest configuration modules according to the starting sequence every time t time, and circularly executing the configuration modules.
The technical effects that this embodiment can reach are: n-1 configuration modules with highest operation efficiency continuously operate, so that the energy-saving effect can be continuously achieved; and each time of the rest configuration modules is switched according to the starting sequence, so that the refrigerating oil can be conveniently circulated in the multi-split system on the premise that the total compressor displacement of the configuration modules reaches the requirement of the capacity b of the internal machine.
In another aspect, the present application provides a multi-split control device, including: the condition acquisition module is used for acquiring the capacity of the internal machine, the capacity of the compressor and the capacity of the external machine when the machine is started; acquiring an operation frequency interval and a starting sequence of a configuration module in each operation frequency interval; the condition judging module is used for judging the relation between the capacity of the internal machine and the capacity of the external machine when the machine is started and judging the number n of the configuration modules needing to be operated; and the control module is used for controlling the configuration module which needs to operate.
The technical effects that this embodiment can reach are: the condition acquisition module acquires a preset operation frequency interval and a starting sequence of the configuration module in each operation frequency interval; when the multi-split air conditioner is started, the condition acquisition module acquires the capacity of the inner machine and the capacity of the compressor, the condition judgment module judges the capacity interval where the capacity b of the inner machine is positioned, judges the number n of the configuration modules needing to be operated, and the control module controls n-1 configuration modules with highest operation efficiency to continuously operate and controls the rest configuration modules to switch according to the starting sequence every time t time.
In still another aspect, the present application provides a multi-split air conditioner, including: the multi-split system control method according to any one of the embodiments described above is implemented by the multi-split system when the computer program is read and executed by the packaged IC.
The technical effects that this embodiment can reach are: the readable storage medium can store computer executable instructions and realize the multi-split control method; the packaged IC is capable of packaging a chip storing computer instructions.
The various embodiments of the application described above may have one or more of the following advantages or benefits: i) The starting sequence of a configuration modules of the multi-split air conditioner is preset according to the running frequency of the multi-split air conditioner, so that the configuration module with highest running efficiency can be started preferentially under any running frequency, and the energy-saving effect is achieved; ii) determining the number n of the configuration modules to be operated according to the relation between the capacity b of the internal machine and the corresponding compressor displacement of the configuration modules, so that the minimum number of the configuration modules are started simultaneously on the premise of meeting the capacity b of the internal machine, and the energy-saving effect is achieved; iii) Among the n configuration modules, the n-1 configuration modules with highest operation efficiency continuously operate to maintain higher operation efficiency, and the rest configuration modules are rotated to facilitate circulation of the refrigeration oil in the multi-split system.
Drawings
Fig. 1 is a flowchart of a multi-split control method according to a first embodiment of the present application.
Fig. 2 is a schematic block diagram of a multi-split control device according to a second embodiment of the present application.
Fig. 3 is a schematic block diagram of a multi-split air conditioner according to a third embodiment of the present application.
Reference numerals illustrate:
100-multiple on-line control device; 110-a condition acquisition module; 120-a condition judgment module; 130-a control module; 200-multi-split air conditioner; 210-an internal machine; 220-a configuration module; 221-compressor.
Detailed Description
At present, the operation quantity or sequence of the configuration modules cannot be changed according to the starting load requirement, so that the operation efficiency is low. According to the operation frequency, the starting sequence of the configuration module is determined; the running number of the configuration modules is determined according to the capacity of the internal machine, so that the energy-saving effect is achieved.
In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
[ first embodiment ]
Based on the problem, the embodiment of the application provides a multi-split control method. Referring to fig. 1, the multi-split control method includes, for example:
step S1: determining the starting sequence of a configuration modules 220 according to the operating frequency of the multi-split air conditioner 200;
step S2: determining the number n of configuration modules 220 to be operated according to the internal unit capacity b and the external unit capacity of the power-on;
step S3: and sequentially operating the configuration modules 220 according to the starting sequence and the number n of the configuration modules 220 needing to be operated.
It should be noted that, when the multi-split air conditioner 200 operates at any operating frequency, all the a configuration modules 220 of the multi-split air conditioner 200 have a corresponding starting sequence, so as to implement the configuration modules 220 with high operating efficiency when the operating frequency is preferentially started.
In a specific embodiment, the step S1: according to the operating frequency of the multi-split air conditioner 200, determining the starting sequence of the a configuration modules 220 includes, for example: the multi-split air conditioner 200 is divided into a plurality of operation frequency intervals. When the multi-split air conditioner 200 operates, the operating frequency is determined, an operating frequency interval in which the operating frequency is located is judged, and a corresponding starting sequence is read, so that the operating sequence of the configuration module 220 is controlled.
Preferably, the number of operating frequency bins is 3-6, for example 4. For example, a plurality of the operating frequency intervals include: low frequency region N 1 N in low and medium frequency region 2 N in the medium-high frequency region 3 High frequency region N 4 . The greater the number of the operating frequency intervals, the more accurate the selection of the configuration module 220 for the optimal operating efficiency at the current operating frequency.
Further, the low frequency region N 1 N in low and medium frequency region 2 N in the medium-high frequency region 3 High frequency region N 4 For example by threshold values of 20Hz, 40Hz, 60Hz, etc., i.e. the low frequency region N 1 Is in the range of 10-20Hz, and is in the middle-low frequency region N 2 In the range of 20-40Hz, N in the medium-high frequency region 3 In the range of 40-60Hz, high frequency region N 4 The range of (2) is 40Hz or more. Wherein 10Hz is the lowest operating frequency. The operating frequency interval formed by the above threshold can cover a common frequency, so as to facilitate the configuration module 220 for determining the optimal operating efficiency corresponding to the current frequency.
Of course, the operating frequency interval may be further divided into operating frequency intervals by adding thresholds of 30, 50, 70, 80, etc., so as to improve the control range and accuracy of the multi-split control method, which will not be described herein.
In a specific embodiment, in the low frequency region N 1 N in low and medium frequency region 2 N in the medium-high frequency region 3 High frequency region N 4 Based on the above, the starting sequence of the a configuration modules 220 of the multi-split air-conditioner 200 is preset according to the operating frequency of the multi-split air-conditioner 200, for example, further includes: in the low frequency region N1, a the configuration module 220 determines the order of the operating frequencies from the large to the small according to the order of the displacement of the compressor 221, and obtains the starting order; and/or, in the middle-low frequency region N2, a kinds of configuration modules 220 are determined according to the order from the large heat exchange area to the small heat exchange area of the heat exchangerDetermining the sequence of the running frequency from large to small to obtain the starting sequence; and/or, in the medium-high frequency region N3, a kinds of configuration modules 220 determine the operation frequency sequence jointly by the heat exchange area size of the heat exchanger and the displacement of the compressor 221, so as to obtain the starting sequence; and/or, in the high-frequency region N4, the a configuration modules 220 determine the operation frequency sequence according to the heat exchange area size and the heat exchange air volume of the heat exchanger, so as to obtain the starting sequence.
It should be noted that, in the low frequency region, the exhaust of the compressor 221 is less, and the external machine with a large discharge capacity of the compressor 221 is started to use more energy, so that the external machine with a low discharge capacity of the compressor 221 is preferentially started, the corresponding configuration module 220 preferentially acts, and the rest configuration modules 220 are alternately operated or not operated, so that the external machine is at an optimal efficiency point for a long time, and energy is saved.
Further, in the middle-low frequency region, the exhaust gas of the compressor 221 is still less, that is, the external machine with the minimum discharge capacity of the compressor 221 can still meet the requirement, but in the middle-low frequency region, compared with the low frequency region, the heat exchange area needs to be increased to achieve the good refrigeration or heating requirement, so that the configuration module 220 with the larger heat exchange area of the heat exchanger is preferentially started, thereby improving the heat exchange efficiency. Only the heat exchange area of the heat exchanger is increased, but the discharge capacity of the compressor 221 is not increased, so that the energy-saving effect can be achieved under the condition that the starting load of the multi-split air conditioner 200 is met.
Further, in the medium-high frequency region, the exhaust effect of the compressor 221 needs to be increased to further improve the heat exchange efficiency, so that the configuration module 220 corresponding to the external machine meeting the requirement of the compressor 221 on the condition that the discharge capacity of the compressor and the heat exchange area of the heat exchanger are larger is preferably started, and the load requirement of the multi-split air conditioner 200 can be met, thereby playing a role in energy conservation.
Further, in the high frequency region, a larger heat exchange air volume is required to be directly selected to ensure stable high frequency operation, so that the configuration module 220 with a larger heat exchange air volume is started on the basis of selecting a larger heat exchange area of the heat exchanger.
Preferably, the configuration module 220 has a class a=4, including a 1 、A 2 、A 3 、A 4 . Wherein A is 1 、 A 2 、A 3 、A 4 With different parameters, such as: compressor 221 discharge capacity, heat exchange area of the heat exchanger, heat exchange air volume and the like. Accordingly, according to A 1 、A 2 、A 3 、A 4 Is preset A in different operation frequency intervals 1 、A 2 、A 3 、A 4 Running sequence.
For example, the starting sequence of the middle and low frequency regions is from small to large A according to the displacement of the compressor 221 1 ＞ A 2 ＞A 3 ＞A 4 The method comprises the steps of carrying out a first treatment on the surface of the The starting sequence of the low-frequency area is A from large to small according to the heat exchange area of the heat exchanger 2 ＞ A 1 ＞A 3 ＞A 4 The method comprises the steps of carrying out a first treatment on the surface of the The starting sequence of the medium-high frequency region is from large to small according to the heat exchange area of the heat exchanger, and then the discharge capacity of the compressor 221 is combined from large to small to A 3 ＞A 2 ＞A 4 ＞A 1 The method comprises the steps of carrying out a first treatment on the surface of the The starting sequence of the high-frequency region is from large to small according to the heat exchange area of the heat exchanger, and the heat exchange air quantity is combined from large to small to be A 4 ＞A 3 ＞A 1 ＞ A 2 The present application is not limited thereto.
In a specific embodiment, step S2: according to the internal unit capacity b and the external unit capacity of the power-on, the number n of the configuration modules 220 to be operated is determined, including: and obtaining the capacity b of the internal machine and the capacity of the external machine corresponding to the configuration module 220, and judging the number of external machines required to be started to meet the capacity b of the internal machine and the corresponding configuration module 220 required to be started according to the capacity b of the internal machine and the capacity of the external machine.
Preferably, if b.ltoreq.x is satisfied 1 *b 1 The number of configuration modules 220 that need to be run n=1; wherein b 1 Outer machine capacity, x, being minimum displacement of compressor 221 1 Is constant. For example, 0 < x 1 Less than 1, if the capacity b of the internal machine meets b less than or equal to x 1 *b 1 The capacity of the external machine corresponding to any configuration module 220 is larger than the capacity b of the internal machine, and at this time, any configuration module 220 is started to meet the power-on load requirement of the multi-split air conditioner 200, so that the number n=1 of the configuration modules 220 running can realize energy saving.
Further, x 1 70% -80%, for example 75% is taken.
Preferably, if x is satisfied 3 *b M-1 B, the number of configuration modules 220 to be operated n=m; wherein b M-1 The sum of the capacities of M-1 external machines with minimum displacement for the compressor 221; x is x 3 Is constant. At this time, the number ratio b of the running configuration modules M-1 The number of the represented external machines is 1 more, so that the requirement of the compressor displacement can be met.
Further, x 3 The value of (2) is in the range of 70% -80%, for example 75%.
Specifically, in the case where the type a=4 of the configuration module 220, the capacity of the external machine of the configuration module 220 is sequentially b from small to large according to the displacement of the compressor 221 1 、b 2 、b 3 、b 4 The present application is not limited thereto.
Preferably, if x is satisfied 1 *b 1 ＜b≤x 2 *(b 1 +b 4 ) The number of configuration modules 220 that need to be run, n=2; wherein x is 2 Is constant, x 2 The value of (2) is in the range of 70% -80%, for example 75%.
The internal unit capacity b satisfies x 1 *b 1 When the displacement of the compressor 221 is smaller than that of the configuration module 220, the starting load requirement of the multi-split air conditioner 200 can be met when the compressor 221 has the smallest displacement in the opened configuration module 220. And, in the low frequency region, the external machine with the minimum displacement of the compressor 221 is started preferentially, and at this time, the two configuration modules 220 are started simultaneously until the total external machine capacity is b 1 +b 4 . Thus, x 1 *b 1 ＜b≤x 2 *(b 1 +b 4 ) The interval (a) is the maximum range under the power-on load requirement of the multi-split air conditioner 200 when the two configuration modules 220 are started, thereby realizing energy saving to the greatest extent.
Preferably, if x is satisfied 2 *(b 1 +b 4 )＜b＜x 3 *(b 1 +b 2 +b 3 ) The number of configuration modules 220 that need to be run, n=3; wherein x is 3 Is a constant value, and is used for the treatment of the skin,x 3 the value of (2) is in the range of 70% -80%, for example 75%.
The internal unit capacity b satisfies x 2 *(b 1 +b 4 ) When the displacement of the compressor 221 is less than b, at least three configuration modules 220 are required to be started at the same time, so that the starting load requirement of the multi-split air conditioner 200 can be met when an external machine with the minimum displacement of the compressor 221 exists in the started configuration modules 220. And at x 3 When the value range of (1) is 70% -80%, the total external capacity of any three configuration modules 220 is greater than the total external capacity and x of the three configuration modules 220 with the smallest displacement of the compressor 221 3 Therefore, when the power-on load requirement of the multi-split air conditioner 200 is met, the three configuration modules 220 are started to save energy.
Preferably, if x is satisfied 3 *(b 1 +b 2 +b 3 ) And b, the number of configuration modules 220 that need to be run n=4.
If the internal unit capacity b satisfies x 3 *(b 1 +b 2 +b 3 ) B, the total amount of the external machine capacity of any three configuration modules 220 is not necessarily larger than the internal machine capacity b, at which point x 3 On the basis of < 1, the four configuration modules 220 are operated to always meet the starting load requirement of the multi-split air conditioner 200.
In a specific embodiment, step S3: according to the starting sequence and the number n of the configuration modules 220 to be operated, the configuration modules 220 are operated in turn, including, for example:
the n configuration modules 220 with highest operation efficiency in the a configuration modules 220 are preferentially started, the first n-1 configuration modules 220 with highest operation efficiency in the a configuration modules 220 continuously operate, and the rest configuration modules 220 are switched according to the starting sequence every time t time of operation and are circularly executed. The remaining configuration modules 220 are the remaining configuration modules 220 except for the n-1 configuration modules 220 with the highest operation efficiency in the a configuration modules 220.
In the first aspect, when there are 4 kinds of configuration modules 220 in the multi-split system 200, if the number of configuration modules 220 to be operated is n=1, the 1 configuration module with the highest operation efficiency is preferentially started220, switching according to the starting sequence every time t is operated. Wherein t is in the range of 3 to 8 hours, for example 4 hours. For example, the operating frequency interval is a low frequency region N 1 When according to A 1 ＞A 2 ＞A 3 ＞A 4 Is to preferentially turn on A 1 ，A 1 After the operation time t, switching to A 2 ， A 2 After the operation time t, switching to A 3 And so on, the final A 4 Re-switching to A 1 And (5) circularly carrying out.
Further, if the number of configuration modules 220 to be operated is n=2, 2 configuration modules 220 with highest operation efficiency are preferentially started, and each operation time t is used for switching the configuration module 220 with second operation efficiency to the rest configuration modules 220 according to the starting sequence. For example, the operation frequency range is a middle-low frequency range N 2 When according to A 2 ＞A 1 ＞A 3 ＞A 4 Is to preferentially turn on A 2 And A 1 Wherein A is 1 、A 3 、A 4 Switching at intervals of t, i.e. A 2 、A 1 Switch to A 2 、A 3 Run and switch to A again 2 、A 4 Run and finally return to A 2 、A 1 And (5) running and circularly executing.
Still further, if the number of configuration modules 220 that need to be operated is n=3, the 3 configuration modules 220 with the highest operation efficiency are preferentially turned on. For example, the operation frequency range is a middle-high frequency range N 3 When according to A 3 ＞A 2 ＞A 4 ＞A 1 Is to preferentially turn on A 3 、A 2 、A 4 Wherein A is 4 、 A 1 Switching at intervals of t, i.e. A 3 、A 2 、A 4 Operation is switched to A 3 、A 2 、A 1 Run and finally return to A 3 、A 2 、A 4 And (5) running and circularly executing.
In the second aspect, when there are 3 kinds of configuration modules 220 in the multi-split system 200, if the number of configuration modules 220 to be operated is n=1, then it is preferableThe most efficient 1 configuration module 220 is started first. For example, the operating frequency interval is a low frequency region N 1 In this case, the combination of 3 configuration modules 220 is, for example, A 2 、A 2 、A 3 、A 4 At this time, priority is given to opening A 2 Switching to another A after t time 2 Configuration module 220, in turn, switches to A 3 、A 4 Finally go back to A 2 Performing loop execution; the combination of the 3 configuration modules 220 is A 2 、A 3 、A 3 、A 4 When A is preferentially started 2 Then sequentially switch to A 3 、A 3 、 A 4 Finally go back to A 2 Performing loop execution; the combination of the 3 configuration modules 220 is A 2 、A 3 、A 4 、A 4 When A is preferentially started 2 Then sequentially switch to A 3 、A 4 、A 4 Finally go back to A 2 And (5) performing loop execution.
Further, if the number of configuration modules 220 that need to be operated is n=2, the 2 configuration modules 220 with the highest operation efficiency are preferentially turned on. For example, the operation frequency range is a middle-low frequency range N 2 In this case, the combination of 3 configuration modules 220 is, for example, A 1 、A 1 、A 3 、A 4 At this time, two A are preferentially started 1 Configuration module 220, one of which A 1 Configuration module 220 continues to run, specifying another A, over a time t 1 The configuration module 220 switches to a in turn 3 ，A 4 Finally switch back to the specified A 1 Configuration module 220, i.e. priority on A 1 、A 1 Switch to A 1 、A 3 Upon switching to A 1 、A 4 Finally go back to A 1 、A 1 The method comprises the steps of carrying out a first treatment on the surface of the The combination of the 3 configuration modules 220 is A 1 、A 3 、A 3 、A 4 When turn on A 1 、A 3 Wherein A is 1 Continuous operation, A 1 、A 3 Switching to another group A 1 、A 3 Then switch to A 1 、A 4 Finally return to the first group A 1 、A 3 Performing loop execution; 3 configuration modules 220The combination is A 1 、A 3 、A 4 、 A 4 When turn on A 1 、A 3 Wherein A is 1 Continuous operation, A 1 、A 3 Switch to A 1 、A 4 Then switch to another group A 1 、A 4 Finally go back to A 1 、A 3 And (5) performing loop execution.
Further, if the number of configuration modules 220 that need to be operated is n=3, the 3 configuration modules 220 with the highest operation efficiency are preferentially turned on. For example, the operation frequency range is a middle-high frequency range N 3 In this case, the combination of 3 configuration modules 220 is, for example, A 4 、A 4 、A 3 、A 1 At this time, priority is given to opening A 4 、 A 4 、A 3 Configuration module 220, A 4 、A 4 Continuous operation, A 3 And A 1 Performing circulation; the combination of the 3 configuration modules 220 is A 4 、A 3 、A 3 、A 1 When A is preferentially started 4 、A 3 、A 3 Configuration module 220, A 4 And any one of group A 3 Configuration module 220 continues to run, designating another group A 3 Configuration module 220 and the remaining A 1 The configuration module 220 is executed in a loop; the combination of the 3 configuration modules 220 is A 4 、A 3 、A 1 、 A 1 When A is preferentially started 4 、A 3 、A 1 A module, wherein A 4 、A 3 Configuration module 220 is continuously running, two groups A 1 The configuration module 220 loops execution.
In the third aspect, when there are 2 kinds of configuration modules 220 in the multi-split system 200, if the number of configuration modules 220 to be operated is n=1, the 1 configuration module 220 with the highest operation efficiency is preferentially started. For example, the operating frequency interval is a low frequency region N 1 In this case, the combination of 2 configuration modules 220 is, for example, A 2 、A 2 、A 3 、A 3 At this time, priority is given to opening A 2 Every t time, switching to A in turn 2 、A 3 、A 3 Finally return to the first group A 2 A configuration module 220 for performing loop execution; 2 kinds of configuration modules 220 is A 2 、A 3 、A 3 、A 3 At this time, A is preferentially turned on 2 Every t time, switching to A in turn 3 、A 3 、A 3 Finally return to the first group A 2 A configuration module 220 for performing loop execution; the combination of the 2 configuration modules 220 is A 2 、A 2 、A 2 、A 3 At this time, A is preferentially turned on 2 Every t time, switching to A in turn 2 、A 2 、A 3 Finally return to the first group A 2 The configuration module 220 is executed in a loop.
Further, if the number of configuration modules 220 that need to be operated is n=2, the 2 configuration modules 220 with the highest operation efficiency are preferentially turned on. For example, the operation frequency range is a middle-low frequency range N 2 In this case, the combination of 2 configuration modules 220 is, for example, A 1 、A 1 、A 4 、A 4 At this time, two A are preferentially started 1 Configuration module 220, one of which A 1 Configuration module 220 continues to run, specifying another A, over a time t 1 The configuration module 220 switches to a in turn 4 ，A 4 Finally switch back to the specified A 1 Configuration module 220, i.e. priority on A 1 、A 1 After time t, switch to A 1 、A 4 After t time, switching to another group A 1 、A 4 Finally go back to A 1 、A 1 The method comprises the steps of carrying out a first treatment on the surface of the The combination of the 2 configuration modules 220 is A 1 、A 1 、 A 1 、A 4 At this time, any two A are preferentially started 1 Configuration module 220, two A's open 1 In the configuration module 220, one A is specified 1 Configuration module 220 and other remaining A 1 、A 4 Switching and circularly executing; the combination of the 2 configuration modules 220 is A 1 、A 4 、A 4 、A 4 At this time, A is preferentially turned on 1 And any one A 4 Configuration module 220, A 1 Configuration module 220 continues to run, three A 4 The configuration module 220 switches in turn and loops.
Still further, if desiredThe number of configuration modules 220 that are running, n=3, the most efficient 3 configuration modules 220 are turned on preferentially. For example, the operation frequency range is a middle-high frequency range N 3 In this case, the combination of 2 configuration modules 220 is, for example, A 4 、A 4 、A 1 、A 1 At this time, priority is given to opening A 4 、 A 4 、A 1 Two of groups A 4 Continuous operation, two groups A 1 Switching and circularly executing; the combination of the 2 configuration modules 220 is A 4 、A 1 、A 1 、A 1 When A is preferentially started 4 、A 1 、A 1 One of A is appointed to be opened 1 Configuration module 220 and remaining unopened A 1 The configuration module 220 performs switching and cyclic execution; the combination of the 2 configuration modules 220 is A 4 、A 4 、A 4 、A 1 When A is preferentially started 4 、A 4 、 A 4 Designating one A 4 Configuration module 220 and the remaining A 1 The configuration module 220 performs switching and loop execution.
In the fourth aspect, when there are 1 configuration modules 220 in the multi-split system 200, the multi-split system 200 is powered on to calculate the operating frequency, and the configuration modules 220 are executed according to the requirement.
[ second embodiment ]
Referring to fig. 2, a schematic block diagram of a multi-split control device 100 according to a second embodiment of the present application is provided, where the multi-split control device can implement the multi-split control method provided in any of the above embodiments. The multi-split control device includes, for example: the condition acquisition module is used for acquiring the capacity of the internal machine, the capacity of the compressor 221 and the capacity of the external machine when the machine is started; acquiring an operation frequency interval and a starting sequence of a configuration module 220 in each operation frequency interval; the condition judging module is used for judging the relation between the capacity of the internal machine and the capacity of the external machine when the machine is started, and the number n of the configuration modules 220 needing to be operated; the control module is configured to control the configuration module 220 that needs to be operated.
Specifically, the condition acquisition module acquires a preset operation frequency interval and a starting sequence of the configuration module 220 in each operation frequency interval; when the multi-split air conditioner 200 is started, a condition acquisition module acquires the required operating frequency of the multi-split air conditioner 200; the condition judgment module determines an operation frequency interval and a starting sequence of the configuration module 220 in each operation frequency interval according to the operation frequency of the multi-split air conditioner 200.
Further, the condition acquiring module acquires the capacity of the internal machine and the displacement of the compressor 221, the condition judging module obtains the sequence of the capacity of the external machine according to the displacement of the compressor 221, the capacity of the external machine forms a plurality of capacity intervals, the condition judging module judges the capacity interval of the internal machine capacity b, judges the number n of the configuration modules 220 needing to be operated, and the control module controls the n-1 configuration modules 220 with highest operation efficiency to continuously operate and controls the rest configuration modules 220 to switch according to the starting sequence every operation t time.
[ third embodiment ]
Referring to fig. 3, a third embodiment of the present application provides a multi-split air conditioner 200, including: the multi-split system 200 implements the multi-split control method according to any one of the above embodiments when the computer program is read and executed by the packaged IC.
Specifically, the multi-split air conditioner 200 includes an inner machine 210 and an outer machine, namely, configuration modules 220, and each configuration module 220 is provided with a compressor 221. The multi-split air conditioner 200 determines the operation number and sequence of the configuration modules 220 according to the capacity of the inner machine 210 and the displacement of the compressor 221.
Although the present application is disclosed above, the present application is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the application, and the scope of the application should be assessed accordingly to that of the appended claims.
Claims (6)
1. The multi-split control method is characterized by comprising the following steps of:
determining the starting sequence of a configuration modules (220) according to the running frequency of the multi-split air conditioner;
determining the number n of the configuration modules (220) to be operated according to the internal unit capacity b and the external unit capacity of the starting machine;
sequentially operating the configuration modules (220) according to the starting sequence and the number n of the configuration modules (220) required to be operated;
wherein a > 1;
-said configuration modules (220) are operated in sequence according to said start-up sequence and the number n of configuration modules (220) to be operated, comprising: the n configuration modules (220) with highest operation efficiency in a configuration modules (220) are preferentially started, the first n-1 configuration modules (220) with highest operation efficiency in a configuration modules (220) continuously operate, and each time the rest configuration modules (220) operate, the rest configuration modules are switched according to the starting sequence and are circularly executed;
according to the internal machine capacity b and the external machine capacity of the starting machine, the number n of the configuration modules (220) needing to be operated is determined, and the method comprises the following steps: if x is satisfied 3 *b M-1 B, the number of configuration modules (220) to be operated n=m; wherein b M-1 The sum of the capacities of M-1 external machines with the minimum displacement of the compressor (221); x is x 3 Is a constant;
in the case of a=4 type of the configuration module (220), the capacity of the external machine of the configuration module (220) is sequentially b from small to large according to the displacement of the compressor (221) 1 、b 2 、b 3 、b 4 ；
If x is satisfied 1 *b 1 ＜b≤x 2 *(b 1 +b 4 ) -the number of configuration modules (220) to be run n=2; wherein x is 2 Is constant, x 1 Is a constant;
if x is satisfied 2 *(b 1 +b 4 )＜b＜x 3 *(b 1 +b 2 +b 3 ) -the number of configuration modules (220) to be run n=3;
if x is satisfied 3 *(b 1 +b 2 +b 3 ) And b, the number of configuration modules (220) to be operated n=4.
2. The multi-split control method according to claim 1, wherein determining a starting sequence of a configuration modules (220) according to an operation frequency of the multi-split comprises;
dividing the multi-split air conditioner into a plurality of operation frequency intervals, and determining the starting sequence of a configuration modules (220) according to the operation frequency intervals where the operation frequencies of the multi-split air conditioner are located;
wherein the plurality of operation frequency intervals comprise: low frequency region N 1 N in low and medium frequency region 2 N in the medium-high frequency region 3 High frequency region N 4 。
3. The multi-split control method according to claim 2, wherein determining the starting sequence of the a configuration modules (220) according to the operation frequency of the multi-split comprises:
in the low frequency region N 1 The configuration module (220) is used for determining the sequence of the operating frequency from the large to the small according to the sequence of the displacement of the compressor (221) from the small to the large, and obtaining the starting sequence;
and/or, in the medium-low frequency region N 2 In a, the configuration module (220) determines the sequence of the operation frequency from large to small according to the sequence of the heat exchange area of the heat exchanger from large to small, and the starting sequence is obtained;
and/or, in the medium-high frequency region N 3 Wherein a configuration modules (220) jointly determine the operation frequency sequence according to the heat exchange area of the heat exchanger and the displacement of the compressor (221) to obtain the starting sequence;
and/or in the high frequency region N 4 In the step a, the configuration module (220) determines the operation frequency sequence by the heat exchange area size and the heat exchange air quantity of the heat exchanger so as to obtain the starting sequence.
4. The multi-split control method according to claim 1, wherein determining the number n of configuration modules (220) to be operated according to the internal unit capacity b and the external unit capacity b of the power on includes:
if b is less than or equal to x 1 *b 1 -the number of configuration modules (220) to be run n=1;
wherein b 1 Outer machine capacity, x, being minimum displacement of compressor (221) 1 Is constant.
5. A multi-split control device, comprising:
the condition acquisition module (110) is used for acquiring the capacity of the internal machine, the capacity of the compressor (221) and the capacity of the external machine when the machine is started; acquiring an operation frequency interval and a starting sequence of a configuration module (220) in each operation frequency interval;
the condition judging module (120) is used for judging the relation between the capacity of the internal machine and the capacity of the external machine when the machine is started, and judging the number n of the configuration modules (220) needing to operate;
a control module (130) for controlling the configuration module (220) to be operated.
6. A multi-split air conditioner, comprising: a computer readable storage medium storing a computer program and a packaged IC, the computer program realizing the multi-split control method according to any one of claims 1-4 when read and run by the packaged IC.
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