CN103512154A - Modular multiple on-line control method - Google Patents
Modular multiple on-line control method Download PDFInfo
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Abstract
The invention relates to a modular multiple on-line control method. Indoor units and outdoor units are included, wherein each outdoor unit comprises an inverter compressor. The control method includes the following steps that first, the capacity requirement Q of the indoor units is calculated; second, the number N of the outdoor units needing to be turned on is determined; third, the turned on outdoor units are allocated according to weight; fourth, all the outdoor units determine the number of the compressors to be turned on and the operating frequency of the inverter compressors according to the allocated capacity. The control method is reasonable in procedure, simple in control and capable of playing the multiple on-line energy-saving potential. Meanwhile, due to the fact that all the inverter compressors can operate within a high-efficiency range through the method, the phenomenon that because the operating frequency is too high, the compressors are lack of oil or burnt to be damaged can be avoided, and the operating reliability and the service life of all the compressors can be effectively guaranteed.
Description
Technical field
The present invention relates to a kind of control method of multi-gang air-conditioner, especially a kind of Modular multi-connection control method.
Background technology
At present, multi-online air-conditioning system development rapidly, is played the part of more and more important role at field of central air-conditioning.Compare with traditional air-conditioning, it is controlled freely, regulates meticulously, fully meets the requirement of consumer to comfortableness, convenience.Meanwhile, because its compressor adopts varying capacity technology, energy-efficient, market potential is unlimited.
All there is multi-connected machine product in current main-stream air-conditioning equipment producer, and its common trait is to adopt module combination in conjunction with varying capacity technology.Most popular multi-connected machine module combination is in the market: the main frame of outdoor unit, subsidiary engine are 1 or many frequency-changeable compressors.
For above-mentioned on-line module combination, existing control mode is: preferentially start main frame, when master capability can not meet practical capacity demand, start subsidiary engine 1, if ability is still inadequate, start subsidiary engine 2, down distribute so successively.This kind of capability distribution mode is simpler, easily realizes, but has the problem of each compressor average operating time inequality, causes running time longer compressor easy to wear; And be prone to the partially oily phenomenon of intermodule, when serious, damage compressor; This kind of method do not given full play to the energy-saving potential of frequency-changeable compressor yet.
Summary of the invention
The object of this invention is to provide the inhomogeneous and irrational problem of a kind of capability distribution that overcomes multi-connected machine intermodule in prior art, give full play to the energy-saving potential of frequency-changeable compressor, improve the technical scheme of sub-load Energy Efficiency Ratio.
Technical scheme of the present invention is:
, comprise indoor units and outdoor unit.Wherein outdoor unit includes frequency-changeable compressor.Described control method comprises the following steps:
A. calculate in the ability need Q of indoor units;
B. determine the outdoor unit quantity N that needs unlatching;
C. the outdoor unit of opening by weight allocation;
D. each outdoor unit is determined and is opened the quantity of compressor and the operating frequency of frequency-changeable compressor according to the ability being assigned to.
Definite method of described step b is: first the high energy efficiency running frequency scope Ha ~ Hb of frequency-changeable compressor is converted into corresponding limit of power Qa ~ Qb, then according in condition N*Qa≤Q < (N+1) in * Qa and Q < N*Qb, determine that it is N platform that outdoor unit is opened quantity.
In described step c, the opening sequence of outdoor unit is: preferentially start main frame, main frame adopts the mode of rotation to determine; While needing to start subsidiary engine, preferentially start shorter subsidiary engine running time; A plurality of frequency-changeable compressors in same outer machine, preferentially start shorter frequency-changeable compressor running time.
If have a plurality of frequency-changeable compressors in same outdoor unit in described steps d, when operating frequency-changeable compressor frequency > Hb and duration be while being T, allows to load all the other frequency-changeable compressors, the service ability of each compressor is by weight allocation.
Further, described time T scope is 1 ~ 10min.
Further, if actual required ability surpasses the maximum service ability of frequency-changeable compressor, frequency-changeable compressor is by maximum service ability operation.
Further, according to the outer unit of control method counting chamber of the present invention, open the sum of quantity >=outdoor unit, open all off-premises stations.
Beneficial effect of the present invention:
Control method flow process of the present invention is reasonable, controls simply, can give full play to the energy-saving potential of multi-connected machine., because this method makes each frequency-changeable compressor, within the scope of high energy efficiency effect, move meanwhile, can avoid because operating frequency is too high, causing compressor oil starvation or burning, effectively guaranteed each compressor operating reliability and service life.
Accompanying drawing explanation
Fig. 1 is the outer machine structural representation of modular multi-connection of the present invention.
Wherein: 1-main frame; 2-subsidiary engine 1; 3-subsidiary engine 2.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated.
As shown in Fig. 1, the modular multi-connection air-conditioning system that the three outer machine modules of take combine is example, elaborates the present invention and the specific embodiment thereof.Described three module multi-connected machines are composed in parallel by the off-premises station of 3 10HP, every off-premises station forms by the connected machine of 2 5HP, described frequency-changeable compressor is characterized in that: 5HP is its ability value while moving under standard frequency, its actual ability value scope is 2 ~ 8HP, and the limit of power of its high energy efficiency running is that 3.5 ~ 6.5HP(is generally provided by compressor producer).The frequency-changeable compressor of described main frame is labeled as respectively B1, B2, and wherein the priority of B1 is higher than B2.The frequency-changeable compressor of described subsidiary engine 1 is labeled as respectively B3, B4, and wherein the priority of B3 is higher than B4.The frequency-changeable compressor of described subsidiary engine 2 is labeled as respectively B5, B6, and wherein the priority of B5 is higher than B6.The priority orders of three outer machines is: main frame > subsidiary engine 1 > subsidiary engine 2.Concrete control method is as follows: by calculating the ability need of indoor units, be designated as Q
in,
Work as Q<sub TranNum="78">in</sub>=2HP, meets Q<sub TranNum="79">in</sub><2*3.5 and Q<sub TranNum="80">in</sub><6.5, it is 1 that outdoor unit is opened quantity, opens main frame, only needs the ability of B1 operation 2HP.
Work as Q<sub TranNum="82">in</sub>=7.5HP, meets 2*3.5≤Q<sub TranNum="83">in</sub><3*3.5 and Q<sub TranNum="84">in</sub><2*6.5, it is 2 that outdoor unit is opened quantity, needs to open main frame, subsidiary engine 1, B1, B3 all move the ability of 3.75HP.
Work as Q<sub TranNum="86">in</sub>=12HP, meets 3*3.5≤Q<sub TranNum="87">in</sub><4*3.5 and Q<sub TranNum="88">in</sub><3*6.5, it is 3 that outdoor unit is opened quantity, and main frame, subsidiary engine 1, subsidiary engine 2 all need to open, and each needs the ability of operation 4HP, and B1, B3, B5 all move the ability of 4HP.
Work as Q<sub TranNum="90">in</sub>=27HP, meets 3*3.5≤Q<sub TranNum="91">in</sub><4*3.5 and Q<sub TranNum="92">in</sub><3*6.5, it is 3 that outdoor unit is opened quantity, main frame, subsidiary engine 1, subsidiary engine 2 all need to open, each needs the ability of operation 9HP, according to control method of the present invention, be first the ability (the maximum fan-out capability that 8HP is each frequency-changeable compressor) that B1, B3, B5 all move 8HP, after duration T is 3min, compressor in module is according to weight allocation ability, and B1, B2, B3, B4, B5, B6 all need to move the ability of 4.5HP.
The part that the present invention does not relate to all prior art that maybe can adopt same as the prior art is realized.
Claims (6)
1. a Modular multi-connection control method, comprises indoor units and outdoor unit, and described outdoor unit includes frequency-changeable compressor, it is characterized in that described control method comprises the following steps:
A. calculate in the ability need Q of indoor units;
B. determine the outdoor unit quantity N that needs unlatching;
C. the outdoor unit of opening by weight allocation;
D. each outdoor unit is determined and is opened the quantity of compressor and the operating frequency of frequency-changeable compressor according to the ability being assigned to.
2. Modular multi-connection control method according to claim 1, the definite method that it is characterized in that described step b is: first the high energy efficiency running frequency scope Ha ~ Hb of frequency-changeable compressor is converted into corresponding limit of power Qa ~ Qb, then according in condition N*Qa≤Q < (N+1) in * Qa and Q < N*Qb, determine that it is N platform that outdoor unit is opened quantity.
3. Modular multi-connection control method according to claim 1, is characterized in that the opening sequence of outdoor unit in described step c is: preferentially start main frame, main frame adopts the mode of rotation to determine; While needing to start subsidiary engine, preferentially start shorter subsidiary engine running time; A plurality of frequency-changeable compressors in same outer machine, preferentially start shorter frequency-changeable compressor running time.
4. Modular multi-connection control method according to claim 1, if it is characterized in that, in described steps d, in same outdoor unit, there are a plurality of frequency-changeable compressors, when operating frequency-changeable compressor frequency > Hb and duration be while being T, allows to load all the other frequency-changeable compressors; The service ability of each compressor is by weight allocation.
5. Modular multi-connection control method according to claim 4, the scope that it is characterized in that described time T is 1 ~ 10min.
6. Modular multi-connection control method according to claim 1, if it is characterized in that, actual required ability surpasses the maximum service ability of frequency-changeable compressor, frequency-changeable compressor press maximum capacity and is moved.
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| CN104807128A (en) * | 2014-01-23 | 2015-07-29 | 珠海格力电器股份有限公司 | Method and system for rotating air conditioner modules |
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| CN106352637A (en) * | 2016-11-28 | 2017-01-25 | 重庆美的通用制冷设备有限公司 | Air conditioner, and control method and control device thereof |
| CN106594911A (en) * | 2016-12-22 | 2017-04-26 | 四川长虹空调有限公司 | Air conditioning system |
| CN107388662A (en) * | 2017-07-28 | 2017-11-24 | 广东美的暖通设备有限公司 | Air-conditioning/source pump and its control method and device |
| CN109163427A (en) * | 2018-08-14 | 2019-01-08 | 广东美的暖通设备有限公司 | Control method, control device and the multi-line system of multi-line system |
| CN109282436A (en) * | 2018-08-27 | 2019-01-29 | 珠海格力电器股份有限公司 | Air-conditioner set compressor control method, device, computer equipment and storage medium |
| CN109556258A (en) * | 2018-11-06 | 2019-04-02 | 广东美的暖通设备有限公司 | Air-conditioning system and its control method |
| CN109579230A (en) * | 2018-11-16 | 2019-04-05 | 青岛海信日立空调系统有限公司 | A kind of distribution method and device of compressor frequency |
| CN109764491A (en) * | 2019-01-31 | 2019-05-17 | 深圳市共济科技股份有限公司 | A kind of data center's air-conditioner control system, control method and storage medium |
| CN109945426A (en) * | 2019-03-12 | 2019-06-28 | 珠海格力电器股份有限公司 | Module machine progress control method, device, module machine equipment and air-conditioning system |
| CN110160126A (en) * | 2019-04-18 | 2019-08-23 | 广东智科电子股份有限公司 | Frequency conversion heating multi-connected machine control method, device, equipment and storage medium |
| WO2019184457A1 (en) * | 2018-03-30 | 2019-10-03 | 珠海格力电器股份有限公司 | Combined alternating operation method, device and multi-split system for outdoor units |
| CN110319540A (en) * | 2019-06-28 | 2019-10-11 | 广东志高暖通设备股份有限公司 | A kind of Modular multi-connection control method of dynamic adjustment |
| CN110319539A (en) * | 2019-06-28 | 2019-10-11 | 广东志高暖通设备股份有限公司 | A kind of Modular multi-connection control method |
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| CN110657488A (en) * | 2019-10-14 | 2020-01-07 | 华育昌(肇庆)智能科技研究有限公司 | Energy-saving environment-friendly air conditioning device |
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| CN113899051A (en) * | 2021-10-28 | 2022-01-07 | 宁波奥克斯电气股份有限公司 | Multi-split air conditioner control method and device and multi-split air conditioner |
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| CN113883689B (en) * | 2021-10-22 | 2023-03-10 | 青岛海信日立空调系统有限公司 | Air conditioning system |
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| CN113899051A (en) * | 2021-10-28 | 2022-01-07 | 宁波奥克斯电气股份有限公司 | Multi-split air conditioner control method and device and multi-split air conditioner |
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Application publication date: 20140115 |