CN104990211A - Control method of multi-machine-head variable-frequency centrifugal central air conditioning unit - Google Patents
Control method of multi-machine-head variable-frequency centrifugal central air conditioning unit Download PDFInfo
- Publication number
- CN104990211A CN104990211A CN201510355617.XA CN201510355617A CN104990211A CN 104990211 A CN104990211 A CN 104990211A CN 201510355617 A CN201510355617 A CN 201510355617A CN 104990211 A CN104990211 A CN 104990211A
- Authority
- CN
- China
- Prior art keywords
- compressor
- energy efficiency
- temperature
- refrigerating capacity
- central air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
-
- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
-
- 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
- F24F11/46—Improving electric energy efficiency or saving
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to the field of air conditioners, in particular to a control method of a multi-machine-head variable-frequency centrifugal central air conditioning unit. The method includes the following steps that target temperature is set when freezing water flows out; refrigerating total amount is acquired; initial water inflow temperature is acquired; a compressor with the largest refrigerating amount in the central air conditioning unit is started, the difference between the initial water inflow temperature and current water inflow temperature is recorded, the difference between the initial water inflow temperature and the target temperature is recorded, and refrigerating demand amount of a whole system is made; remaining load is calculated, and when the remaining load is larger than the refrigerating amount of a remaining compressor in the optimal energy efficiency state, the second largest compressor is started so that the compressor can run in the optimal energy efficiency; when the remaining load is smaller than the refrigerating amount of the remaining compressor in the optimal energy efficiency state, a compressor with the refrigerating amount close to that of the remaining compressor is started, so that the remaining compressor achieves the optimal energy efficiency state sequentially; water outflow temperature of the freezing water is detected and compared with the target temperature; whether the air conditioner meets the machine stop condition is judged.
Description
Technical field
The present invention relates to field of air conditioning, be specifically related to the control method of the centrifugal Central air-conditioning unit of a kind of multi-machine heads frequency conversion, reach more satisfactory energy-conservation and refrigeration in the operation kind of whole unit.
Background technology
Along with society is to energy-conservation demand, building energy conservation accounting is comparatively large, and in building energy conservation, air-conditioning accounting is maximum.In air-conditioning, there is much new power-saving technology in particularly central air-conditioning, but at present comparatively advanced be the application of magnetic levitation technology, and the centrifugal central air-conditioning of frequency conversion magnetic levitation commercially uses in a large number.
The centrifugal Central air-conditioning unit of frequency conversion magnetic levitation, it is a kind of Central air-conditioning unit, and its compressor adopts frequency conversion magnetic levitation centrifugal compressor, and cold-producing medium is that refrigeration industry commonly uses refrigerant, and refrigerating medium is water or other fluid.Refrigerating medium is first turned cold by compression refrigerant by Central air-conditioning unit, then allows refrigerating medium reach refrigeration object in indoor circulation to reduce room temperature.
Central air-conditioning unit according to current go out (entering) coolant-temperature gage and set water temperature degree regulate the frequency of compressor.For meeting larger refrigerating capacity, often central air conditioner main machine can use the combination of multiple compressors.Every compressor has fixing refrigerating capacity, by regulating the frequency of compressor electric motor to control rotating speed, thus controls the refrigerating capacity of compressor.In order to show the refrigerating capacity state of compressor, many applied loads percentage represents in the industry.The cooling load of Normal squeezing machine represents minimum to maximum cooling capacity from 0-100%.Can embody air-conditioning energy-conservation important indicator be Energy Efficiency Ratio.Energy Efficiency Ratio is under declared working condition and rated condition, the ratio of actual refrigerating capacity and actual input power when air-conditioning carries out refrigerating operaton.This is a composite target, reflects the refrigerating capacity that unit input power converts in operation of air conditioner process.Air-conditioning Energy Efficiency Ratio is larger, and the electric energy saved when refrigerating capacity is equal is more.
Converter technique is more and more for Large Central Air Conditioning System, and the method for operation how controlling frequency-changeable compressor also has a variety of existence, and good and bad directly impact of control mode is freezed and energy-saving effect.
Current many be exactly that PID controls (being made up of proportional unit P, integral unit I and differentiation element D) and return difference control.When actual temperature is larger than target temperature, the refrigerating capacity of compressor is improved by the frequency promoting compressor electric motor, but frequency-changeable compressor is not can reach optimum energy-saving effect under any frequency, particularly during many group compressor head combinations, the most high energy efficiency of every compressor can not be played.
Summary of the invention
According to the deficiencies in the prior art, the invention provides a kind of Energy Saving Control mode, make whole unit reach Energy Efficiency Ratio by the load of the every compressor of rational proportion compressor the highest.
Technical scheme of the present invention is: the control method of the centrifugal Central air-conditioning unit of a kind of multi-machine heads frequency conversion, hardware system comprise be connected successively condenser, by-passing valve, evaporimeter and parallel connection several compressors, the exit of condenser is connected with the entrance of evaporimeter, and between be provided with electric expansion valve; Compressor, condenser are connected with the input of evaporimeter with external computer controller, and the output of computer controller is connected with electric expansion valve; Cold-producing medium flows in circulating line, and control method step is as follows:
(1) target temperature during chilled water water outlet is set;
(2) the refrigeration total amount of all compressors of Central air-conditioning unit is gathered;
(3) the initial inflow temperature of the chilled water before the startup of every compressor is gathered;
(4) compressor that in Central air-conditioning unit, refrigerating capacity is maximum is started, make it the best energy efficiency state running to this compressor, after inflow temperature is stable, the current inflow temperature of record chilled water, record the difference of initial inflow temperature and current inflow temperature, record the difference of initial inflow temperature and target temperature, and make the refrigeration demand amount of whole system according to the ratio of two differences;
(5) gather refrigeration demand amount and Central air-conditioning unit freeze the ratio of total amount, when this ratio is greater than 1, open the operation of whole compressor full load, repetition step (3); When this ratio is less than 1, then by compressor operating maximum for wherein refrigerating capacity to best energy efficiency state, record now refrigerating capacity; When now refrigerating capacity is greater than refrigeration demand amount, then do not start other compressor, current compressor is carried out to the water temperature regulate and control of self; When now refrigerating capacity is less than refrigeration demand amount, then calculate residue load, when residue load is greater than residual compression machine when the refrigerating capacity of best energy efficiency state, then starts second largest compressor and make it to run to best energy efficiency state; When residue load is less than residual compression machine when the refrigerating capacity of best energy efficiency state, then the compressor that startup one is close with this refrigerating capacity, and make residual compression machine arrive best energy efficiency state successively;
(6) leaving water temperature and the target temperature that detect chilled water contrast; When leaving water temperature is higher than target temperature, to compressor loads, be then carried in the compressor that Energy Efficiency Ratio under equal refrigerating capacity is the highest; When leaving water temperature is lower than target temperature, to compressor off-load, then the off-load compressor that Energy Efficiency Ratio is minimum under equal refrigerating capacity;
(7) judging whether air-conditioning reaches halt condition, when not reaching halt condition, continuing circulation step (6); After reaching halt condition, air-conditioning quits work.
The number of several described compressors is preferably 3-10.
Wherein, the halt condition of different manufacturers is different, when Central air-conditioning unit regulation and control state is opened, then needs to carry out contrast to the Inlet and outlet water temperature of chilled water always and judges, thus control compressor loads or off-load, thus ensure the normal operation of Central air-conditioning unit.
In the present invention, improving the refrigerating capacity of compressor by promoting the frequency of compressor electric motor, playing the most high energy efficiency of every compressor.By the load of the every compressor of rational proportion, thus make whole Central air-conditioning unit reach most high energy efficiency ratio, reach best energy efficiency state.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is schematic flow sheet of the present invention;
Fig. 2 is hardware system structure schematic diagram of the present invention;
Fig. 3 is Energy Efficiency Ratio schematic diagram of the present invention;
In figure: 1: compressor, 2: condenser, 3: evaporimeter, 4: controller, 5: electric expansion valve, 6: by-passing valve, Ts: target temperature, Q: refrigeration total amount, T1: initial inflow temperature, T2: current inflow temperature, △ T1: the difference of initial inflow temperature and current inflow temperature, △ Ts: the difference of initial inflow temperature and target temperature, Qa: refrigeration demand amount, R: the ratio of refrigeration demand amount and refrigeration total amount, X: Energy Efficiency Ratio, Y: live load, a%: most high energy efficiency ratio.
Detailed description of the invention
Illustrate below in conjunction with accompanying drawing and the present embodiment is described in further detail, but the present invention is not limited to specific embodiment.
Embodiment 1:
The control method of the centrifugal Central air-conditioning unit of a kind of multi-machine heads frequency conversion, hardware system comprise be connected successively condenser 2, by-passing valve 6, evaporimeter 3 and parallel connection 3 compressors 1, the exit of condenser 2 is connected with the entrance of evaporimeter 3, and between be provided with electric expansion valve 5; Compressor 1, condenser 2 are connected with the input of evaporimeter 3 with external computer controller 4, and the output of computer controller 4 is connected with electric expansion valve 5; Cold-producing medium flows in circulating line, and control method step is as follows:
(1) target temperature Ts during chilled water water outlet is set;
(2) the refrigeration total amount Q=Q1+Q2+Q3 of all compressors 1 of Central air-conditioning unit is gathered;
(3) the initial inflow temperature T1 of the chilled water before the startup of every compressor 1 is gathered;
(4) compressor 1 that in Central air-conditioning unit, refrigerating capacity is maximum is started, make it the best energy efficiency state running to this compressor 1, after inflow temperature is stable, the current inflow temperature T2 of record chilled water, record the difference △ T1 of initial inflow temperature T1 and current inflow temperature T2, record the difference △ Ts of initial inflow temperature T1 and target temperature Ts; And the refrigeration demand amount Qa of whole system is made according to △ T1/ △ Ts;
(5) gather refrigeration demand amount Qa and Central air-conditioning unit freeze the ratio R of total amount Q, when R is greater than 1, open the operation of whole compressor 1 full load, repetition step (3); When R is less than 1, then compressor 1 maximum for wherein refrigerating capacity is run to best energy efficiency state a1%, record now refrigerating capacity Qa1=a1% × Q1; When this three compressor runs, load condition when the best Energy Efficiency Ratio of every compressor is a1% respectively, a2%, a3%, first allow the maximum compressor 1 of wherein refrigerating capacity run to best energy efficiency state a1%, refrigerating capacity is at this moment Qa1=a1% × Q1, when Qa1 is greater than Qa, then do not restart other compressor 1, current compressor 1 is carried out to the water temperature regulate and control of self; When Qa1 is less than in Qa, then calculate residue load, when remaining load and being greater than Qa2=a2% × Q2 and Qa3=a3% × Q3, then start second largest compressor 1 and make it to run to a2%; When remaining load and being less than Qa2 and Qa3, then the compressor 1 that startup one is close with this refrigerating capacity, namely after the second compressor to a2%, restarts the 3rd compressor to a3%;
(6) leaving water temperature and the target temperature Ts that detect chilled water contrast; When leaving water temperature is higher than target temperature Ts, to load compressor 1, then be carried in the compressor 1 that Energy Efficiency Ratio under equal refrigerating capacity is the highest; When leaving water temperature is lower than target temperature Ts, to compressor 1 off-load, then the off-load compressor that Energy Efficiency Ratio is minimum under equal refrigerating capacity 1;
(7) judging whether air-conditioning reaches halt condition, when not reaching halt condition, continuing circulation step (6); After reaching halt condition, air-conditioning quits work.
Wherein, the efficiency of centrifugal compressor 1 follows the curve of Fig. 3: as can be seen from curve, under real-time working condition, minimum is not the highest with Energy Efficiency Ratio when peak load, only when sub-load is a%, just reach most high energy efficiency ratio, this value of different compressors 1 is different.
In the present invention, improved the refrigerating capacity of compressor 1 by the frequency promoting compressor 1 motor, play the most high energy efficiency of every compressor 1.By the load of the every compressor 1 of rational proportion, thus make whole Central air-conditioning unit reach most high energy efficiency ratio, reach best energy efficiency state.
Above-described is only the preferred embodiment of the present invention, should be understood that for a person skilled in the art, under the prerequisite not departing from structure of the present invention, can also make some distortion and improvement, these all can not affect effect of the invention process and practical applicability.
Claims (2)
1. the control method of the centrifugal Central air-conditioning unit of multi-machine heads frequency conversion, hardware system comprise be connected successively condenser, by-passing valve, evaporimeter and parallel connection several compressors, the exit of condenser is connected with the entrance of evaporimeter, and between be provided with electric expansion valve; Compressor, condenser are connected with the input of evaporimeter with external computer controller, and the output of computer controller is connected with electric expansion valve; Cold-producing medium flows in circulating line, it is characterized in that: control method step is as follows:
(1) target temperature during chilled water water outlet is set;
(2) the refrigeration total amount of all compressors of Central air-conditioning unit is gathered;
(3) the initial inflow temperature of the chilled water before the startup of every compressor is gathered;
(4) compressor that in Central air-conditioning unit, refrigerating capacity is maximum is started, make it the best energy efficiency state running to this compressor, after inflow temperature is stable, the current inflow temperature of record chilled water, record the difference of initial inflow temperature and current inflow temperature, record the difference of initial inflow temperature and target temperature, and make the refrigeration demand amount of whole system according to the ratio of two differences;
(5) gather refrigeration demand amount and Central air-conditioning unit freeze the ratio of total amount, when this ratio is greater than 1, open the operation of whole compressor full load, repetition step (3); When this ratio is less than 1, then by compressor operating maximum for wherein refrigerating capacity to best energy efficiency state, record now refrigerating capacity; When now refrigerating capacity is greater than refrigeration demand amount, then do not start other compressor, current compressor is carried out to the water temperature regulate and control of self; When now refrigerating capacity is less than refrigeration demand amount, then calculate residue load, when residue load is greater than residual compression machine when the refrigerating capacity of best energy efficiency state, then starts second largest compressor and make it to run to best energy efficiency state; When residue load is less than residual compression machine when the refrigerating capacity of best energy efficiency state, then the compressor that startup one is close with this refrigerating capacity, and make residual compression machine arrive best energy efficiency state successively;
(6) leaving water temperature and the target temperature that detect chilled water contrast; When leaving water temperature is higher than target temperature, to compressor loads, be then carried in the compressor that Energy Efficiency Ratio under equal refrigerating capacity is the highest; When leaving water temperature is lower than target temperature, to compressor off-load, then the off-load compressor that Energy Efficiency Ratio is minimum under equal refrigerating capacity;
(7) judging whether air-conditioning reaches halt condition, when not reaching halt condition, continuing circulation step (6); After reaching halt condition, air-conditioning quits work.
2. the control method of the centrifugal Central air-conditioning unit of a kind of multi-machine heads frequency conversion according to claim 1, is characterized in that: the number of several described compressors is 3-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510355617.XA CN104990211B (en) | 2015-06-24 | 2015-06-24 | The control method of the centrifugal Central air-conditioning unit of multi-machine heads frequency conversion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510355617.XA CN104990211B (en) | 2015-06-24 | 2015-06-24 | The control method of the centrifugal Central air-conditioning unit of multi-machine heads frequency conversion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104990211A true CN104990211A (en) | 2015-10-21 |
| CN104990211B CN104990211B (en) | 2017-12-12 |
Family
ID=54302065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510355617.XA Active CN104990211B (en) | 2015-06-24 | 2015-06-24 | The control method of the centrifugal Central air-conditioning unit of multi-machine heads frequency conversion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104990211B (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106225362A (en) * | 2016-08-02 | 2016-12-14 | 烟台顿汉布什工业有限公司 | The control method of a kind of Double-head centrifugal refrigerating machines and system |
| CN106989477A (en) * | 2016-11-11 | 2017-07-28 | 深圳达实智能股份有限公司 | Control method, control device and the central air conditioner system of refrigerating water pump after cold is shut down |
| CN108895601A (en) * | 2018-06-08 | 2018-11-27 | 青岛海尔空调电子有限公司 | Central air-conditioning group control method based on magnetic suspension host |
| CN109798581A (en) * | 2019-01-25 | 2019-05-24 | 青岛海信日立空调系统有限公司 | A kind of control method and air source heat pump system of multiple net for air-source heat pump units |
| 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 |
| CN112781186A (en) * | 2019-11-05 | 2021-05-11 | 广东美的制冷设备有限公司 | Air conditioner control method, air conditioner and readable storage medium |
| CN112880115A (en) * | 2019-11-29 | 2021-06-01 | 青岛海尔空调电子有限公司 | Control method of multi-unit air conditioning system |
| CN113108393A (en) * | 2021-05-31 | 2021-07-13 | 南通华信中央空调有限公司 | Energy adjusting method for air-conditioning water system |
| CN113203231A (en) * | 2021-05-07 | 2021-08-03 | 广州市华德工业有限公司 | Energy adjusting method and device of unit and unit |
| CN113266923A (en) * | 2021-05-26 | 2021-08-17 | 广东申菱商用空调设备有限公司 | Control method and control device of compressor |
| CN113266924A (en) * | 2021-05-26 | 2021-08-17 | 广东申菱商用空调设备有限公司 | Control method and control device of compressor |
| CN113297812A (en) * | 2021-05-19 | 2021-08-24 | 浙江国祥股份有限公司 | Energy efficiency optimization control algorithm for multi-machine-head frequency conversion centrifugal chiller |
| CN113339962A (en) * | 2021-05-12 | 2021-09-03 | 北京市建筑设计研究院有限公司 | Control method of airplane ground air conditioning system |
| CN113375292A (en) * | 2021-06-30 | 2021-09-10 | 特灵空调系统(中国)有限公司 | Control method, air conditioning system, and computer-readable storage medium |
| CN114593475A (en) * | 2020-12-04 | 2022-06-07 | 青岛海尔空调电子有限公司 | Control method for water chilling unit |
| WO2023098833A1 (en) * | 2021-12-01 | 2023-06-08 | 重庆美的通用制冷设备有限公司 | Method and apparatus for controlling air conditioning unit, electronic device, and readable storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04317594A (en) * | 1991-04-17 | 1992-11-09 | Matsushita Seiko Co Ltd | Controller for air conditioner |
| CN1952511A (en) * | 2005-10-21 | 2007-04-25 | 三星电子株式会社 | Control method of multi type air conditioner |
| CN102032647A (en) * | 2010-12-08 | 2011-04-27 | 海尔集团公司 | Magnetic suspension multi-nose central air-conditioning load distribution system and method |
| US20140360212A1 (en) * | 2013-06-10 | 2014-12-11 | Samsung Electronics Co., Ltd. | Air conditioner and method of controlling the same |
| CN104566773A (en) * | 2013-10-28 | 2015-04-29 | 珠海格力电器股份有限公司 | Volume control method and volume control system for multi-connected air conditioner |
-
2015
- 2015-06-24 CN CN201510355617.XA patent/CN104990211B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04317594A (en) * | 1991-04-17 | 1992-11-09 | Matsushita Seiko Co Ltd | Controller for air conditioner |
| CN1952511A (en) * | 2005-10-21 | 2007-04-25 | 三星电子株式会社 | Control method of multi type air conditioner |
| CN102032647A (en) * | 2010-12-08 | 2011-04-27 | 海尔集团公司 | Magnetic suspension multi-nose central air-conditioning load distribution system and method |
| US20140360212A1 (en) * | 2013-06-10 | 2014-12-11 | Samsung Electronics Co., Ltd. | Air conditioner and method of controlling the same |
| CN104566773A (en) * | 2013-10-28 | 2015-04-29 | 珠海格力电器股份有限公司 | Volume control method and volume control system for multi-connected air conditioner |
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106225362A (en) * | 2016-08-02 | 2016-12-14 | 烟台顿汉布什工业有限公司 | The control method of a kind of Double-head centrifugal refrigerating machines and system |
| CN106225362B (en) * | 2016-08-02 | 2019-06-14 | 顿汉布什(中国)工业有限公司 | A kind of control method and system of Double-head centrifugal refrigerating machines |
| CN106989477A (en) * | 2016-11-11 | 2017-07-28 | 深圳达实智能股份有限公司 | Control method, control device and the central air conditioner system of refrigerating water pump after cold is shut down |
| CN106989477B (en) * | 2016-11-11 | 2019-06-04 | 深圳达实智能股份有限公司 | Control method, control device and the central air conditioner system of refrigerating water pump after cold is shut down |
| CN108895601A (en) * | 2018-06-08 | 2018-11-27 | 青岛海尔空调电子有限公司 | Central air-conditioning group control method based on magnetic suspension host |
| CN108895601B (en) * | 2018-06-08 | 2021-02-12 | 青岛海尔空调电子有限公司 | Central air conditioner group control method based on magnetic suspension host |
| CN109798581A (en) * | 2019-01-25 | 2019-05-24 | 青岛海信日立空调系统有限公司 | A kind of control method and air source heat pump system of multiple net for air-source heat pump units |
| CN109798581B (en) * | 2019-01-25 | 2021-06-18 | 青岛海信日立空调系统有限公司 | Control method of multiple air source heat pump units and air source heat pump 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 |
| CN110160126B (en) * | 2019-04-18 | 2021-02-09 | 广东智科电子股份有限公司 | Variable-frequency heating multi-split control method, device, equipment and storage medium |
| CN112781186A (en) * | 2019-11-05 | 2021-05-11 | 广东美的制冷设备有限公司 | Air conditioner control method, air conditioner and readable storage medium |
| CN112781186B (en) * | 2019-11-05 | 2022-04-19 | 广东美的制冷设备有限公司 | Air conditioner control method, air conditioner and readable storage medium |
| CN112880115A (en) * | 2019-11-29 | 2021-06-01 | 青岛海尔空调电子有限公司 | Control method of multi-unit air conditioning system |
| CN114593475B (en) * | 2020-12-04 | 2024-06-07 | 青岛海尔空调电子有限公司 | Control method for water chilling unit |
| CN114593475A (en) * | 2020-12-04 | 2022-06-07 | 青岛海尔空调电子有限公司 | Control method for water chilling unit |
| CN113203231A (en) * | 2021-05-07 | 2021-08-03 | 广州市华德工业有限公司 | Energy adjusting method and device of unit and unit |
| CN113339962A (en) * | 2021-05-12 | 2021-09-03 | 北京市建筑设计研究院有限公司 | Control method of airplane ground air conditioning system |
| CN113297812A (en) * | 2021-05-19 | 2021-08-24 | 浙江国祥股份有限公司 | Energy efficiency optimization control algorithm for multi-machine-head frequency conversion centrifugal chiller |
| CN113297812B (en) * | 2021-05-19 | 2022-07-05 | 浙江国祥股份有限公司 | Energy efficiency optimization control method for multi-handpiece variable-frequency centrifugal water chilling unit |
| CN113266923A (en) * | 2021-05-26 | 2021-08-17 | 广东申菱商用空调设备有限公司 | Control method and control device of compressor |
| CN113266924A (en) * | 2021-05-26 | 2021-08-17 | 广东申菱商用空调设备有限公司 | Control method and control device of compressor |
| CN113108393A (en) * | 2021-05-31 | 2021-07-13 | 南通华信中央空调有限公司 | Energy adjusting method for air-conditioning water system |
| CN113108393B (en) * | 2021-05-31 | 2022-04-12 | 南通华信中央空调有限公司 | Energy adjusting method for air-conditioning water system |
| CN113375292A (en) * | 2021-06-30 | 2021-09-10 | 特灵空调系统(中国)有限公司 | Control method, air conditioning system, and computer-readable storage medium |
| WO2023098833A1 (en) * | 2021-12-01 | 2023-06-08 | 重庆美的通用制冷设备有限公司 | Method and apparatus for controlling air conditioning unit, electronic device, and readable storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104990211B (en) | 2017-12-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104990211A (en) | Control method of multi-machine-head variable-frequency centrifugal central air conditioning unit | |
| CN102121741B (en) | Multi-connection air conditioning unit and control method thereof during small-load refrigeration running | |
| CN103486692B (en) | The method of load self-adapting variable-frequency multi-connection type heat pump and control compressor frequency | |
| CN103216909B (en) | Control method of outdoor fan during heating of variable-frequency multi-connection type air conditioning unit | |
| CN103791588B (en) | Solve the control method that VRF Air Conditioning System cold-producing medium is on the low side | |
| JP5558400B2 (en) | Heat source system and number control method for heat source system | |
| CN110895016A (en) | Fuzzy self-adaptive based energy-saving group control method for central air-conditioning system | |
| CN102967022A (en) | Control method for starting variable-frequency compressor of multi-connected air conditioning unit | |
| CN103175276A (en) | Air-cooling direct-current frequency-conversion magnetic levitation nature cold source water chilling unit | |
| CN110207420B (en) | Multi-split system and control method thereof | |
| CN108534394B (en) | Group control optimization control method for loading and unloading of double units of ground source heat pump | |
| JP2007240131A (en) | Optimization control of heat source unit and accessory | |
| CN110260492B (en) | Fan and compressor control method under refrigeration mode of variable frequency air conditioner | |
| CN104776633A (en) | Hybrid power refrigeration system and control method thereof | |
| CN114611288A (en) | Intelligent efficient computer room energy-saving algorithm model of central air-conditioning system | |
| CN114459133A (en) | Energy-saving control method and energy-saving control system for central air-conditioning system | |
| CN104930770A (en) | Defrosting method and defrosting device of heat pump air conditioner | |
| CN203323266U (en) | Air-cooling direct-current variable-frequency magnetic-levitation water chilling unit with natural cold source | |
| CN112665121B (en) | Control method and device for air conditioner chilled water pump, controller and air conditioning system | |
| CN220601671U (en) | Water-cooling integrated water chilling unit with natural cooling function | |
| CN203396028U (en) | Power-saving system of central air conditioner | |
| CN112212471B (en) | Air conditioning system and compressor control method thereof | |
| CN113739357B (en) | Efficient machine room control method, device and system and central air conditioner | |
| CN110906497A (en) | Control system of central air conditioner and central air conditioner | |
| CN114322220B (en) | Air conditioning device and control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190222 Address after: 266300 No. 11 Plant of High-tech Enterprise Incubation, South of Minjiang Road, Jiaozhou Economic and Technological Development Zone, Qingdao City, Shandong Province Patentee after: Qingdao Arctic Ocean Cold and Warm Energy Technology Co., Ltd. Address before: 266000 Room 1205, Xiwang Building, 138 Dunhua Road, North District, Qingdao City, Shandong Province Patentee before: Energy conservation service engineering science and technology Co., Ltd is newly made every effort to open up in Shandong |
|
| TR01 | Transfer of patent right |