CN113899051A - Multi-split air conditioner control method and device and multi-split air conditioner - Google Patents
Multi-split air conditioner control method and device and multi-split air conditioner Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000006073 displacement reaction Methods 0.000 claims description 35
- 238000004590 computer program Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 23
- 238000004378 air conditioning Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- QIVUCLWGARAQIO-OLIXTKCUSA-N (3s)-n-[(3s,5s,6r)-6-methyl-2-oxo-1-(2,2,2-trifluoroethyl)-5-(2,3,6-trifluorophenyl)piperidin-3-yl]-2-oxospiro[1h-pyrrolo[2,3-b]pyridine-3,6'-5,7-dihydrocyclopenta[b]pyridine]-3'-carboxamide Chemical compound C1([C@H]2[C@H](N(C(=O)[C@@H](NC(=O)C=3C=C4C[C@]5(CC4=NC=3)C3=CC=CN=C3NC5=O)C2)CC(F)(F)F)C)=C(F)C=CC(F)=C1F QIVUCLWGARAQIO-OLIXTKCUSA-N 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
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- 238000004806 packaging method and process Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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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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Abstract
The invention provides a multi-online control method, a control device and a multi-online control method, wherein the multi-online control method comprises the steps of determining the starting sequence of a configuration modules according to the operating frequency of a multi-online control; determining the number n of the configuration modules needing to be operated according to the capacity b of the started internal machine and the capacity of the external machine; and sequentially operating the configuration modules according to the starting sequence and the number n of the configuration modules to be operated. The embodiment of the invention solves the problem of low operation efficiency caused by the fact that a multi-online machine cannot control the operation of the configuration module according to the startup load requirement.
Description
Technical Field
The invention relates to the technical field of air conditioner control, in particular to a multi-split air conditioner control method, a multi-split air conditioner control device and a multi-split air conditioner.
Background
In the multi-module multi-split system, an energy efficiency optimal area exists in the operation of each module. If the same module operation sequence or operation number is adopted for different load requirements during startup of the multi-split air conditioner, the optimal operation efficiency cannot be achieved, and energy waste is caused.
Disclosure of Invention
The invention 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 problem, in one aspect, the present invention provides a multi-connected machine control method, including: determining the starting sequence of the a types of configuration modules according to the running frequency of the multi-split air conditioner; determining the number n of the configuration modules needing to be operated according to the capacity b of the started internal machine and the capacity of the external machine; sequentially operating the configuration modules according to the starting sequence and the number n of the configuration modules to be operated; wherein a is more than 1.
Compared with the prior art, the technical effect that this embodiment can reach is: determining the starting sequence of the a types of configuration modules, and preferentially starting the configuration module with the highest operation efficiency under any operation frequency so as to improve the energy efficiency ratio of the multi-split air-conditioning system; and determining the number n of the configuration modules needing to be operated according to the capacity b of the started internal machine and the capacity of the started external machine, so that the energy waste caused by excessive number of the configuration modules is avoided, the energy efficiency ratio of the multi-split air-conditioning system is further improved, and the optimal operation efficiency is achieved.
In an embodiment of the present invention, the determining a starting sequence of the a configuration modules according to the operating frequency of the multi-split air conditioner includes; dividing the multi-split air conditioner into a plurality of operating frequency intervals, and determining the starting sequence of a configuration modules according to the operating frequency interval in which the operating frequency of the multi-split air conditioner is located; wherein the plurality of operating frequency intervals comprises: low frequency region N1, medium and low frequency region N2, medium and high frequency region N3, high frequency region N4.
The technical effect that this embodiment can reach is: dividing the multi-split air conditioner intoThe starting sequence under different frequencies can be effectively distinguished by the multiple frequency intervals, and the more the number of the frequency intervals is, the more accurate the configuration module with the best running efficiency under the current frequency is determined; low frequency region N1Middle and low frequency region N2Middle and high frequency region N3High frequency region N4The frequency band is common, so that the multi-split control method can effectively control the operation quantity and sequence of the configuration modules in the daily use of the multi-split unit, and the operation efficiency is improved.
In an embodiment of the present invention, the determining the starting sequence of the a configuration modules according to the operating frequency of the multi-split air conditioner includes: in a low-frequency region N1, the order of the operating frequency from large to small is determined by the order of the compressor displacement from small to large by the a types of configuration modules, and the starting order is obtained; and/or in the middle-low frequency region N2, the a types of configuration modules determine the sequence of the operating frequencies from large to small according to the sequence of the heat exchange areas of the heat exchangers from large to small to obtain the starting sequence; and/or in the middle-high frequency region N3, the operation frequency sequence of the a types of configuration modules is determined by the heat exchange area size of the heat exchanger and the displacement of the compressor together, and the starting sequence is obtained; and/or in the high-frequency region N4, the operation frequency sequence of the a types of configuration modules is determined by the size of the heat exchange area of the heat exchanger and the heat exchange air volume together, and the starting sequence is obtained.
The technical effect that this embodiment can reach is: in a low-frequency area, the compressor exhausts less gas, so that the configuration module corresponding to the outer unit with low compressor displacement is started preferentially, and the energy-saving effect can be achieved; in the medium-low frequency region, the compressor still has less exhaust gas, but the heat exchange requirement is improved, so that the configuration module with the 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 the medium-high frequency region, the exhaust demand of the compressor is increased, so that the configuration module with large compressor displacement is started on the basis of selecting a large heat exchange area of the heat exchanger, and the energy-saving effect can be achieved; in a high-frequency area, whether stable high-frequency operation can be achieved is determined by the larger heat exchange air quantity, so that the configuration module with the larger heat exchange air quantity 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 an embodiment of the present invention, the determining, according to the capacity b of the powered-on internal unit and the capacity of the powered-on external unit, the number n of the configuration modules that need to be operated includes: if b is less than or equal to x1*b1The number n of the configuration modules needing to be operated is 1; wherein, b1Capacity of the external unit, x, at which the displacement of the compressor is minimal1Is a constant.
The technical effect that this embodiment can reach is: when the capacity b of the internal machine is less than or equal to the capacity of the external machine with the minimum displacement of the compressor, the combination coefficient x1And any one of the configuration modules is started to meet the requirement of the displacement of the compressor, so that the number n of the configuration modules which need to be operated at the moment is 1, and the energy-saving effect can be achieved.
In an embodiment of the present invention, the determining, according to the capacity b of the powered-on internal unit and the capacity of the powered-on external unit, the number n of the configuration modules that need to be operated includes: if x is satisfied1*b1＜b≤x2* (b1+b4) The number n of the configuration modules needing to be operated is 2; wherein, b1Capacity of the external unit for minimum compressor displacement, b4The maximum compressor displacement of the external machine capacity, x1、x2Is a constant.
The technical effect that this embodiment can reach is: binding coefficient x2When the internal unit capacity b satisfies b ≦ x2*(b1+b4) When the compressor is started, the configuration modules are started to meet the requirement of the displacement of the compressor, so that the number n of the configuration modules which need to operate at the moment is 2, and the energy-saving effect can be achieved.
In an embodiment of the present invention, the determining, according to the capacity b of the powered-on internal unit and the capacity of the powered-on external unit, the number n of the configuration modules that need to be operated includes: if x is satisfied2*(b1+b4)＜b＜ x3*(b1+b2+b3) The number n of the configuration modules needing to be operated is 3; wherein, b1、b2、b3Three outer machine capacities for minimum compressor displacement, b1、b2、b3The corresponding compressor displacement is increased in sequence; x is the number of2、x3Is a constant.
The technical effect that this embodiment can reach is: binding coefficient x3When the internal unit capacity b satisfies b ≦ x3*(b1+b2+b3) When the compressor is started, the configuration modules are started to meet the requirement of the displacement of the compressor, so that the number n of the configuration modules which need to operate at the moment is 3, and the energy-saving effect can be achieved.
In an embodiment of the present invention, determining the number n of the configuration modules to be operated according to the capacity b of the internal unit and the capacity of the external unit during startup includes: if x is satisfied3*bM-1B is less than or equal to M, and the number n of the configuration modules needing to be operated is equal to M; wherein, bM-1The capacity sum of M-1 outdoor units with the minimum compressor displacement is obtained; x is the number of3Is a constant.
The technical effect that this embodiment can reach is: binding coefficient x3When the internal unit capacity b satisfies x3*bM-1And when b is less than or equal to b, the number of the configuration modules needing to be started is at least M, so that the requirement of the compressor displacement can be met.
In an embodiment of the present invention, the sequentially operating the configuration modules according to the starting sequence and the number n of the configuration modules to be operated includes: preferentially starting the n configuration modules with highest operation efficiency in the a configuration modules, wherein the first n-1 configuration modules with highest operation efficiency in the a configuration modules continuously operate, and the rest configuration modules are switched according to the starting sequence every t time of operation and are executed circularly.
The technical effect that this embodiment can reach is: the n-1 configuration modules with the highest operation efficiency continuously operate, and can continuously play a role in energy conservation; and the rest configuration modules are switched according to the starting sequence every t time of operation, so that the refrigeration oil can be conveniently circulated in the multi-split air-conditioning system on the premise that the total compressor displacement of the configuration modules reaches the requirement of the capacity b of an internal machine.
In another aspect, the present invention provides a multiple on-line controller including: the condition acquisition module is used for acquiring the capacity of an internal machine, the displacement of a compressor and the capacity of an external machine during starting; acquiring operation frequency intervals and a starting sequence of configuration modules in each operation frequency interval; the condition judgment module is used for judging the relation between the capacity of the started internal machine and the capacity of the external machine and judging the number n of the configuration modules needing to be operated; and the control module is used for controlling the configuration module to be operated.
The technical effect that this embodiment can reach is: the condition acquisition module acquires a preset operation frequency interval and a starting sequence of a configuration module in each operation frequency interval; when the multi-split air conditioner is started, the condition acquisition module acquires the capacity of an internal machine and the displacement of a compressor, the condition judgment module judges the capacity interval where the capacity b of the internal machine is located, the number n of the configuration modules needing to operate is judged, the control module controls the n-1 configuration modules with the highest operation efficiency to operate continuously, and the control module controls the rest configuration modules to switch each operation time t according to the starting sequence.
In still another aspect, the present invention provides a multi-split air conditioner, including: a computer readable storage medium storing a computer program and a packaged IC, the computer program being read by and executed by the packaged IC, the multi-online system implementing the multi-online-control method according to any of the embodiments described above.
The technical effect that this embodiment can reach is: the readable storage medium can store computer executable instructions and realize the multi-online control method; the packaged IC is capable of packaging a chip that stores computer instructions.
The various embodiments described above may have one or more of the following advantages or benefits: i) presetting the starting sequence of the a kinds of configuration modules of the multi-split air conditioner according to the operating frequency of the multi-split air conditioner, so that the configuration modules with the highest operating efficiency can be started preferentially at any operating frequency, and the energy-saving effect is achieved; ii) determining the number n of the configuration modules needing to operate according to the relation between the capacity b of the internal machine and the corresponding compressor displacement of the configuration modules, so that on the premise of meeting the capacity of the internal machine, the configuration modules with the minimum number are simultaneously started, thereby achieving the effect of energy conservation; iii) among the n operating configuration modules, the n-1 configuration modules with the highest operating efficiency continuously operate to maintain higher operating efficiency, and the rest configuration modules are rotated to facilitate the circulation of refrigeration oil in the system of the multi-split air-conditioning system.
Drawings
Fig. 1 is a flowchart of a multi-split control method according to a first embodiment of the present invention.
Fig. 2 is a block diagram of a multiple on-line control device according to a second embodiment of the invention.
Fig. 3 is a block diagram of a multi-split air conditioner according to a third embodiment of the present invention.
Description of reference numerals:
100-a multi-connected machine control device; 110-a condition acquisition module; 120-condition judgment module; 130-a control module; 200-multi-split air-conditioning system; 210-an internal machine; 220-configuration module; 221-compressor.
Detailed Description
At present, the multi-split air conditioner cannot change the operation quantity or sequence of the configuration modules according to the starting load requirement, so that the operation efficiency is low. According to the method, the starting sequence of the configuration modules is determined according to the running frequency; 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 to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
[ first embodiment ] A method for manufacturing a semiconductor device
Based on the problem, the embodiment of the invention provides a multi-connected machine control method. Referring to fig. 1, the multi-split control method includes, for example:
step S1: determining the starting sequence of the a kinds of configuration modules 220 according to the running frequency of the multi-split air conditioner 200;
step S2: determining the number n of configuration modules 220 needing to be operated according to the capacity b of the started internal machine and the capacity of the external machine;
step S3: and sequentially operating the configuration modules 220 according to the starting sequence and the number n of the configuration modules 220 to be operated.
It should be noted that, when the multi-split air conditioner 200 operates at any operating frequency, the a configuration modules 220 of the multi-split air conditioner 200 all have a corresponding starting sequence, so that the configuration modules 220 with high operating efficiency at the operating frequency are started preferentially.
In a specific embodiment, the step S1: determining the starting sequence of the a configuration modules 220 according to the operating frequency of the multi-split air conditioner 200 includes: the multi-split air conditioner 200 is divided into a plurality of operating frequency intervals. When the multi-split air conditioner 200 operates, the operating frequency is determined, the operating frequency interval where the operating frequency is located is judged, and the corresponding starting sequence is read, so that the operating sequence of the configuration module 220 is controlled.
Preferably, the number of operating frequency intervals is 3-6, for example 4. For example, a plurality of the operating frequency intervals includes: low frequency region N1Middle and low frequency region N2Middle and high frequency region N3High frequency region N4. Wherein, the greater the number of the operating frequency intervals, the more accurate the selection of the configuration module 220 with the best operating efficiency is for the current operating frequency.
Further, a low frequency region N1Middle and low frequency region N2Middle and high frequency region N3High frequency region N4E.g. by means of thresholds of 20Hz, 40Hz, 60Hz, etc., i.e. low frequency region N1In the range of 10-20Hz, a middle-low frequency region N2In the range of 20-40Hz, a medium-high frequency region N3In the range of 40-60Hz, high frequency region N4Is in the range of 40Hz or more. Wherein 10Hz is the lowest operating frequency. The operation frequency interval formed by the threshold can cover a common frequency, so as to facilitate the configuration module 220 for determining the optimal operation efficiency corresponding to the current frequency.
Of course, thresholds of 30, 50, 70, 80, and the like may also be added to the operating frequency interval to further divide the operating frequency interval, so as to improve the control range and accuracy of the multi-split control method, which is not described herein again.
In a specific embodiment, in the low frequency region N1Middle and low frequency region N2Middle and high frequency region N3High frequency region N4On the basis, the presetting of the starting sequence of the a types of configuration modules 220 of the multi-split air conditioner 200 according to the operating frequency of the multi-split air conditioner 200, for example, further includes: in a low-frequency region N1, the order of the operating frequencies from high to low is determined by the a types of configuration modules 220 according to the order of the displacement of the compressor 221 from low to high, so as to obtain the starting order; and/or in the middle-low frequency region N2, the a types of configuration modules 220 determine the sequence of the operating frequencies from large to small according to the sequence of the heat exchange areas of the heat exchangers from large to small to obtain the starting sequence; and/or in the middle-high frequency region N3, the operation frequency sequence of the a types of configuration modules 220 is determined by the heat exchange area size of the heat exchanger and the displacement of the compressor 221 together, so as to obtain the starting sequence; and/or in the high-frequency region N4, the operation frequency sequence of the configuration modules 220 of the a types is determined by the size of the heat exchange area of the heat exchanger and the heat exchange air volume together, so as to obtain the starting sequence.
It should be noted that, in the low-frequency region, the discharge of the compressor 221 is less, and the starting of the external unit with a large discharge capacity of the compressor 221 uses more energy, so that the external unit with a low discharge capacity of the compressor 221 is preferentially started, the corresponding configuration module 220 preferentially operates, and the remaining configuration modules 220 alternately operate or do not operate, so that the external unit is at the optimal efficiency point for a long time, and energy is saved.
Further, in the medium-low frequency region, the discharge of the compressor 221 is still less, that is, the outdoor unit with the minimum discharge capacity of the compressor 221 can still meet the requirement, but in the medium-low frequency region, compared with the low frequency region, the heat exchange area needs to be increased to achieve a good refrigeration or heating requirement, so the configuration module 220 with the larger heat exchange area of the heat exchanger is preferentially started, and the heat exchange efficiency is increased. The energy-saving effect can be achieved under the condition that the starting load of the multi-split air-conditioning system 200 is met by only increasing the heat exchange area of the heat exchanger without increasing the displacement of the compressor 221.
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 unit which meets the requirements of the compressor 221 on the displacement and the heat exchange area of the heat exchanger are preferentially started, that is, the load requirement of the multi-split air conditioner 200 can be met, and the energy-saving effect can be achieved.
Further, in a high-frequency area, the stable high-frequency operation can be ensured only by directly selecting the larger heat exchange air volume, so that the configuration module 220 with the large heat exchange air volume is started on the basis of selecting the larger heat exchange area of the heat exchanger.
Preferably, the configuration module 220 has a category a of 4, which includes a1、A2、A3、A4. Wherein A is1、 A2、A3、A4With different parameters, for example: the discharge capacity of the compressor 221, the heat exchange area of the heat exchanger, the heat exchange air quantity and the like. Accordingly, according to A1、A2、A3、A4In different operating frequency intervals, presetting A1、A2、A3、A4And (5) running the sequence.
For example, the start sequence of the middle and low frequency regions is from small to large A according to the displacement of the compressor 2211＞ A2＞A3＞A4(ii) a The starting sequence of the low-frequency region is A from large to small according to the heat exchange area of the heat exchanger2＞ A1＞A3＞A4(ii) a 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 is combined with the discharge capacity of the compressor 221 and from large to small to be A3＞A2＞A4＞A1(ii) a The starting sequence of the high-frequency area is A from large to small according to the heat exchange area of the heat exchanger and then combined with the heat exchange air quantity4＞A3＞A1＞ A2And is not limited herein.
In a specific embodiment, step S2: determining the number n of the configuration modules 220 to be operated according to the capacity b of the internal machine and the capacity of the external machine during starting, including: and acquiring 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 the external machines which meet the requirement of the capacity b of the internal machine and need to be started and the configuration module 220 which needs to be started correspondingly according to the capacity b of the internal machine and the capacity of the external machine.
Preferably, if b.ltoreq.x is satisfied1*b1The number n of configuration modules 220 that need to be run is 1; wherein, b1The outer machine capacity, x, at which the displacement of the compressor 221 is minimum1Is a constant. For example, 0 < x1If the capacity b of the internal machine satisfies b is less than or equal to x1*b1If the capacity of the external unit corresponding to any configuration module 220 is greater than the capacity b of the internal unit, then the start-up load requirement of the multi-split air-conditioning system 200 can be met by starting any configuration module 220, and therefore, the number n of the running configuration modules 220 is 1, and energy saving can be achieved.
Further, x1From 70% to 80%, for example 75%.
Preferably, if x is satisfied3*bM-1B, the number n of the configuration modules 220 needing to be operated is equal to M; wherein, bM-1The sum of the capacities of M-1 outdoor units having the smallest displacement of the compressor 221; x is the number of3Is a constant. At this time, the number of running configuration modules is compared with bM-1The number of the represented outer units is 1, and the requirement of the displacement of the compressor can be met.
Further, x3Ranges from 70% to 80%, for example 75%.
Specifically, when the type a of the configuration module 220 is 4, the capacity of the external unit of the configuration module 220 is b in order from small to large, for example, the capacity of the compressor 2211、b2、b3、b4And is not limited herein.
Preferably, if x is satisfied1*b1＜b≤x2*(b1+b4) The number n of configuration modules 220 that need to be run is 2; wherein x is2Is a constant number, x2Ranges from 70% to 80%, for example 75%.
The internal unit capacity b satisfies x1*b1If the discharge capacity of the compressor 221 is the minimum, the starting load requirement of the multi-split air conditioner 200 can be met in the configuration modules 220 which are started at least by starting the two configuration modules 220 at the same time. Also, in the low frequency region, the displacement of the compressor 221 is minimizedThe outdoor unit is preferentially opened, and at this time, the total capacity b of the outdoor unit which can be reached by opening the two configuration modules 220 at most simultaneously is1+b4. Thus, x1*b1＜b≤x2*(b1+b4) The interval (2) is the maximum range that satisfies the boot load requirement of the multi-split air-conditioning system 200 when the two configuration modules 220 are started, so that energy saving is realized to the maximum extent.
Preferably, if x is satisfied2*(b1+b4)＜b＜x3*(b1+b2+b3) The number n of configuration modules 220 that need to be run is 3; wherein x is3Is a constant number, x3Ranges from 70% to 80%, for example 75%.
The internal unit capacity b satisfies x2*(b1+b4) If the discharge capacity of the compressor 221 is the minimum, the starting load requirement of the multi-split air conditioner 200 can be met in the configuration modules 220 which are started at least by starting the three configuration modules 220 at the same time. And, at x3When the value range of (1) is 70-80%, the total outdoor unit capacity of any three configuration modules 220 is greater than the total outdoor unit capacity and x of the three configuration modules 220 with the minimum discharge capacity of the compressor 2213Therefore, under the condition of meeting the boot load requirement of the multi-split air-line 200, the three configuration modules 220 are started to realize energy saving.
Preferably, if x is satisfied3*(b1+b2+b3) B, the number n of configuration modules 220 that need to be run is 4.
It should be noted that if the internal unit capacity b satisfies x3*(b1+b2+b3) B is less than or equal to b, the total capacity of the external unit of any three configuration modules 220 is not necessarily larger than the capacity b of the internal unit, and at the moment, x is3On the basis of < 1, the starting load requirement of the multi-split air conditioner 200 can be always met by operating the four configuration modules 220.
In a specific embodiment, step S3: sequentially operating the configuration modules 220 according to the starting sequence and the number n of the configuration modules 220 to be operated, for example, the method includes:
the n configuration modules 220 with the highest operation efficiency in the a configuration modules 220 are preferentially started, the first n-1 configuration modules 220 with the 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 of operation and are executed in a circulating manner. The remaining configuration modules 220 are the remaining configuration modules 220 except the n-1 configuration modules 220 with the highest operation efficiency in the a types of configuration modules 220.
On the first hand, when there are 4 kinds of configuration modules 220 in the multi-split air-conditioning system 200, if the number n of configuration modules 220 that need to be operated is 1, then 1 configuration module 220 with the highest operation efficiency is preferentially started, and switching is performed according to the start sequence every operation time t. 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 N1When is in accordance with A1＞A2＞A3＞A4In the starting sequence of (A) is started preferentially1，A1After t time of operation, switching to A2， A2After t time of operation, switching to A3By analogy, and finally A4Switching to A again1And circulating the steps.
Further, if the number n of configuration modules 220 that need to be operated is 2, the 2 configuration modules 220 with the highest operation efficiency are preferentially started, and the configuration module 220 with the second operation efficiency and the remaining configuration modules 220 are switched according to the start sequence every operation time t. For example, the operation frequency interval is a middle-low frequency region N2When is in accordance with A2＞A1＞A3＞A4In the starting sequence of (A) is started preferentially2And A1Wherein A is1、A3、A4Switching every t times, i.e. A2、A1Switch to A2、A3Operation, then switch to A2、A4Run and finally return to A2、A1And running and executing in a circulating mode.
Further, if the number n of configuration modules 220 that need to be operated is 3, the 3 configuration modules 220 with the highest operation efficiency are preferentially started. For example, the operating frequencyThe interval is a medium-high frequency region N3When is in accordance with A3＞A2＞A4＞A1In the starting sequence of (A) is started preferentially3、A2、A4Wherein A is4、 A1Switching every t times, i.e. A3、A2、A4Operation, switching to A3、A2、A1Run and finally return to A3、A2、A4And running and executing in a circulating mode.
In the second aspect, when there are 3 kinds of configuration modules 220 in the multi-split air-conditioning system 200, if the number n of configuration modules 220 that need to be operated is equal to 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 N1When the combination of the 3 configuration modules 220 is A, for example2、A2、A3、A4At this time, A is turned on preferentially2Switching to another A after t time2Configure module 220, and switch to A in turn3、A4Finally go back to A2Executing in a circulating way; the combination of the 3 configuration modules 220 is A2、A3、A3、A4When it is, it is turned on2Then sequentially switched to A3、A3、 A4Finally go back to A2Executing in a circulating way; the combination of the 3 configuration modules 220 is A2、A3、A4、A4When it is, it is turned on2Then sequentially switched to A3、A4、A4Finally go back to A2And executing in a loop.
Further, if the number n of configuration modules 220 that need to be operated is 2, the 2 configuration modules 220 with the highest operation efficiency are preferentially started. For example, the operation frequency interval is a middle-low frequency region N2When the combination of the 3 configuration modules 220 is A, for example1、A1、A3、A4When the two A are turned on preferentially1Configuration modules 220, one of which A1The configuration module 220 continues to run, specifying another A after t time1The configuration module 220 switches to A in turn3，A4At the mostPost-switch back to designated A1Configuration Module 220, i.e. priority on A1、A1Is switched to A1、A3At the time of switching to A1、A4Finally go back to A1、A1(ii) a The combination of the 3 configuration modules 220 is A1、A3、A3、A4When it is turned on, A1、A3Wherein A is1Continuous operation, A1、A3Switch to another group A1、A3Then switch to A1、A4Finally, go back to the first group A1、A3Executing in a circulating way; the combination of the 3 configuration modules 220 is A1、A3、A4、 A4When it is turned on, A1、A3Wherein A is1Continuous operation, A1、A3Switch to A1、A4Then switch to another group A1、A4Finally go back to A1、A3And executing in a loop.
Further, if the number n of configuration modules 220 that need to be operated is 3, the 3 configuration modules 220 with the highest operation efficiency are preferentially started. For example, the operating frequency interval is a middle-high frequency region N3When the combination of the 3 configuration modules 220 is A, for example4、A4、A3、A1At this time, A is turned on preferentially4、 A4、A3Configuration Module 220, A4、A4Continuous operation, A3And A1Executing in a circulating way; the combination of the 3 configuration modules 220 is A4、A3、A3、A1When it is, it is turned on4、A3、A3Configuration Module 220, A4And an arbitrary group A3The configuration module 220 runs continuously, designating another group A3Configuration Module 220 and the remaining A1The configuration module 220 executes in a loop; the combination of the 3 configuration modules 220 is A4、A3、A1、 A1When it is, it is turned on4、A3、A1Module in which A4、A3The configuration module 220 runs continuously, two sets A1Configuration mouldBlock 220 loops.
In the third aspect, when there are 2 configuration modules 220 in the multi-split line 200 system, if the number n of configuration modules 220 that need to be operated is equal to 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 N1When the combination of 2 configuration modules 220 is A2、A2、A3、A3At this time, A is turned on preferentially2Switching is performed once every t time, and switching is sequentially performed to A2、A3、A3Finally, go back to the first group A2A configuration module 220, which executes in a loop; the combination of 2 configuration modules 220 is A2、A3、A3、A3When the first time comes, the second time is started with priority2Switching is performed once every t time, and switching is sequentially performed to A3、A3、A3Finally, go back to the first group A2A configuration module 220, which executes in a loop; the combination of 2 configuration modules 220 is A2、A2、A2、A3When the first time comes, the second time is started with priority2Switching is performed once every t time, and switching is sequentially performed to A2、A2、A3Finally, go back to the first group A2And the configuration module 220 executes in a loop.
Further, if the number n of configuration modules 220 that need to be operated is 2, the 2 configuration modules 220 with the highest operation efficiency are preferentially started. For example, the operation frequency interval is a middle-low frequency region N2When the combination of 2 configuration modules 220 is A1、A1、A4、A4When the two A are turned on preferentially1Configuration modules 220, one of which A1The configuration module 220 continues to run, specifying another A after t time1The configuration module 220 switches to A in turn4，A4Finally switch back to the designated A1Configuration Module 220, i.e. priority on A1、A1And after t time, switching to A1、A4And then switched to another group A after t time1、A4Finally go back to A1、A1(ii) a The combination of 2 configuration modules 220 is A1、A1、 A1、A4At this time, any two A are preferentially opened1Configuration Module 220, two A turned on1In the configuration module 220, an A is specified1Configuration module 220 and other remaining A' s1、A4Switching and executing circularly; the combination of 2 configuration modules 220 is A1、A4、A4、A4When the first time comes, the second time is started with priority1And any one of A4Configuration Module 220, A1Configuration Module 220 runs continuously, three A4The configuration module 220 switches in sequence and executes in a loop.
Further, if the number n of configuration modules 220 that need to be operated is 3, the 3 configuration modules 220 with the highest operation efficiency are preferentially started. For example, the operating frequency interval is a middle-high frequency region N3When the combination of 2 configuration modules 220 is A4、A4、A1、A1At this time, A is turned on preferentially4、 A4、A1Two groups A4Continuously run, two groups A1Switching and executing circularly; the combination of 2 configuration modules 220 is A4、A1、A1、A1When it is, it is turned on4、A1、A1Specifying one of A to be turned on1Configuration module 220 and the remaining unopened A1The configuration module 220 performs switching and circular execution; the combination of 2 configuration modules 220 is A4、A4、A4、A1When it is, it is turned on4、A4、 A4Specifying one of A4Configuration Module 220 and the remaining A1The configuration module 220 performs switching and loop execution.
In the fourth aspect, when there are 1 configuration module 220 in the multi-split system 200, the multi-split system 200 is turned on to calculate the operating frequency, and the configuration module 220 is executed according to the requirement.
[ second embodiment ]
Referring to fig. 2, which is a schematic block diagram of a multi-split control device 100 according to a second embodiment of the present invention, the multi-split control device is capable of implementing the multi-split control method according to any of the embodiments described above. Among them, the multi-connected machine control device includes, for example: the condition acquisition module is used for acquiring the capacity of an internal machine during starting up, the displacement of the compressor 221 and the capacity of an external machine; acquiring operation frequency intervals and a starting sequence of a configuration module 220 in each operation frequency interval; a condition judgment module, configured to judge the number n of configuration modules 220 that need to be operated according to the relationship between the capacity of the internal unit and the capacity of the external unit; and a control module for controlling the configuration module 220 to be operated.
Specifically, the condition obtaining module obtains 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, the condition acquisition module acquires the operating frequency required by the multi-split air conditioner 200; the condition judgment module determines an operation frequency interval according to the operation frequency of the multi-split air-fuel ratio unit 200, and a starting sequence of the configuration module 220 in each operation frequency interval.
Further, the method includes the steps that the indoor unit capacity of the modules and the discharge capacity of the compressors 221 are obtained under the condition, the condition judging module obtains the sequence of the outdoor unit capacity according to the discharge capacity of the compressors 221, the outdoor unit capacity forms a plurality of capacity intervals, the condition judging module judges the capacity interval where the indoor unit capacity b is located, the number n of configuration modules 220 needing to operate is judged, the control module controls n-1 configuration modules 220 with the highest operation efficiency to operate continuously, and the control module controls the rest configuration modules 220 to switch in the starting sequence every operation time t.
[ third embodiment ]
Referring to fig. 3, a third embodiment of the present invention provides a multi-split air conditioner 200, including: a computer readable storage medium and a packaged IC storing a computer program, where when the computer program is read and executed by the packaged IC, the multi-split air-conditioner 200 implements the multi-split air-conditioner control method according to any one of the above embodiments.
Specifically, the multi-split air conditioner 200 includes an internal unit 210 and an external unit, which is a configuration module 220, and each configuration module 220 is provided with a compressor 221. The multi-split air conditioner 200 determines the number and sequence of operations of the configuration module 220 according to the capacity of the indoor unit 210 and the displacement of the compressor 221.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (8)
1. A multi-split control method is characterized by comprising the following steps:
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) needing to be operated according to the capacity b of the started internal machine and the capacity of the external machine;
sequentially operating the configuration modules (220) according to the starting sequence and the number n of the configuration modules (220) to be operated;
wherein a is more than 1.
2. The multi-split air conditioner control method according to claim 1, wherein the determining of the starting sequence of the a configuration modules (220) according to the operation frequency of the multi-split air conditioner comprises the following steps;
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 interval in which the operation frequency of the multi-split air conditioner is located;
wherein the plurality of operating frequency intervals comprises: low frequency region N1Middle and low frequency region N2Middle and high frequency region N3High frequency region N4。
3. The multi-split air conditioner control method as claimed in claim 2, wherein the determining the starting sequence of the a configuration modules (220) according to the operating frequency of the multi-split air conditioner comprises:
in the low frequency region N1In the configuration module (220) of the a types, the sequence of the operation frequency from large to small is determined according to the sequence of the displacement of the compressor (221) from small to large, and the starting sequence is obtained;
and/or in the middle and low frequency region N2In the configuration modules (220) of the type a, the sequence of the operating frequencies from large to small is determined according to the sequence of the heat exchange areas of the heat exchangers from large to small, and the starting sequence is obtained;
and/or, in the medium-high frequency region N3In the configuration module (220) of the type a, the operation frequency sequence is determined by the heat exchange area of a heat exchanger and the displacement of a compressor (221) together, and the starting sequence is obtained;
and/or in the high-frequency region N4In the configuration modules (220) in the type a, the operation frequency sequence is determined by the heat exchange area and the heat exchange air volume of the heat exchanger together, and the starting sequence is obtained.
4. The multi-split control method as claimed in claim 1, wherein determining the number n of the configuration modules (220) to be operated according to the capacity b of the powered-on internal unit and the capacity of the powered-on external unit comprises:
if b is less than or equal to x1*b1The number n of the configuration modules (220) to be operated is 1;
wherein, b1An outer machine capacity, x, at which the displacement of the compressor (221) is minimized1Is a constant.
5. The multi-split control method as claimed in claim 1, wherein determining the number n of the configuration modules (220) to be operated according to the capacity b of the powered-on internal unit and the capacity of the powered-on external unit comprises:
if x is satisfied3*bM-1B, the number n of the configuration modules (220) needing to be operated is equal to M;
wherein, bM-1The capacity sum of M-1 outer units with the minimum displacement of the compressor (221); x is the number of3Is a constant.
6. The multi-online control method according to any one of claims 1-5, wherein the sequentially operating the configuration modules (220) according to the starting sequence and the number n of the configuration modules (220) to be operated comprises:
preferentially starting the n configuration modules (220) with highest operation efficiency in the a types of configuration modules (220), wherein the first n-1 configuration modules (220) with highest operation efficiency in the a types of configuration modules (220) continuously operate, and the rest configuration modules (220) are switched according to the starting sequence every t time of operation and are circularly executed.
7. A multiple on-line control device, comprising:
the condition acquisition module (110) is used for acquiring the capacity of an internal machine during starting, the displacement of the compressor (221) and the capacity of an external machine; acquiring operation frequency intervals and a starting sequence of a configuration module (220) in each operation frequency interval;
the condition judgment module (120) is used for judging the relation between the capacity of the started internal machine and the capacity of the external machine and judging the number n of the configuration modules (220) needing to be operated;
a control module (130) for controlling the configuration module (220) to be operated.
8. A multi-split air conditioner comprising: a computer readable storage medium and a packaged IC storing a computer program, which when read and executed by the packaged IC, implements the multiple online control method according to any one of claims 1 to 6.
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