CN100445657C - Precisive module regulating method of air conditioner - Google Patents
Precisive module regulating method of air conditioner Download PDFInfo
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- CN100445657C CN100445657C CNB2004100267860A CN200410026786A CN100445657C CN 100445657 C CN100445657 C CN 100445657C CN B2004100267860 A CNB2004100267860 A CN B2004100267860A CN 200410026786 A CN200410026786 A CN 200410026786A CN 100445657 C CN100445657 C CN 100445657C
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- temperature
- humidity
- enthalpy
- programmable digital
- operated controller
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000001105 regulatory effect Effects 0.000 title 1
- 238000005057 refrigeration Methods 0.000 claims abstract description 18
- 238000004378 air conditioning Methods 0.000 claims abstract description 12
- 230000007613 environmental effect Effects 0.000 claims abstract description 5
- 238000004364 calculation method Methods 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000010010 raising Methods 0.000 claims description 6
- 238000000205 computational method Methods 0.000 claims description 2
- 238000005485 electric heating Methods 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 5
- 238000007791 dehumidification Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 101000974343 Homo sapiens Nuclear receptor coactivator 4 Proteins 0.000 description 1
- 102100022927 Nuclear receptor coactivator 4 Human genes 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The present invention discloses a control method for a module precision air conditioning system which is composed of a programmable digital direct controller, a refrigeration loop of a compressor, an electric heating PTC and an electrode type humidifier. A unique enthalpy value corresponding to a temperature requirement, a humidity requirement and a control precision requirement is set in the programmable digital direct controller. Enthalpy values which are sensed by a temperature and humidity sensor and correspond to the temperature and the humidity are compared with the unique enthalpy value which corresponds to the temperature and the humidity and is set in the programmable digital direct controller. Comparison calculation is carried out through enthalpy difference, and a PID control value is output. When the enthalpy difference is small, the air conditioning system is started to heat, increase the temperature, reduce humidity and make refrigeration in a small amount of refrigeration capacity to meet environmental requirements. When the enthalpy difference is big, the air conditioning system is used for determining how many refrigeration compressors are started and when the refrigeration compressors are started according to the control values output by the programmable digital direct controller.
Description
Technical field
The present invention relates to the control technology of air-conditioning system, be specifically related to a kind of module precision air conditioner control method.
Technical background
At present, in the field of business air conditioner, the refrigerating capacity of precision air conditioner unit that carries the refrigerant system is generally between 20KW to 250KW, and heating capacity is between 10KW to 120KW.Compressor, the evaporimeter of one or more small-sized customization cold are housed, condenser, throttling arrangement, heater, humidifier, members such as supply air system and air cleaner in the precision air conditioner equipment of a compact conformation.Aspect control, adopt temperature, humidity separately to control usually and realize that promptly temperature is low, heating; The temperature height, cooling; Humidity is low, humidification; The humidity height, cool-down dehumidification.Adopt this control method to have following problem: the compressor cooling dehumidifying when high humidity low temperature occurring, can occur, the phenomenon of electric heater heating; When the high temperature low humidity occurring, can occur the situation of compressor cooling cool-down dehumidification and humidifier humidification again, cause the waste of the energy; In addition, because this method is isolated temperature and humidity and come, be difficult to realize high-precision temperature and humidity control.
Summary of the invention
The objective of the invention is to, a kind of module precision air conditioner control method that provides is provided, can overcome the above-mentioned shortcoming that existing precision air conditioner control method exists, accurately the refrigeration system of control module air-conditioning is carried out work; The temperature that can accurately control environment, humidity, energy efficient significantly.
Technical scheme of the present invention is as follows: a kind of module precision air conditioner system control method is provided, module precision air conditioner system is made up of following parts: a plurality of refrigerating circuits that programmable digital self-operated controller DDC, one or more compressor are formed, one group of electrical heating PTC, an electrode humidifler, described control method comprises the steps:
1, temperature, the humidity of controlled environment are come out by sensor sensing and signal is sent to programmable digital self-operated controller in the system;
2, in the programmable digital self-operated controller, be provided with temperature, humidity and the control accuracy requirement of setting; Unique enthalpy that each temperature, humidity are all corresponding;
3, the unique enthalpy of setting in the enthalpy of programmable digital self-operated controller temperature that Temperature Humidity Sensor is sensed, humidity correspondence and the programmable digital self-operated controller corresponding with temperature, humidity compares, compare calculating by enthalpy difference, export a PID controlling value, this value scope is 0～100%; Relatively computational methods as shown in the formula:
4, air-conditioning system is controlled according to enthalpy difference result of calculation, and in enthalpy difference hour, air-conditioning system starts heat temperature raising and falls wet and little cold refrigeration and satisfy environmental requirement; When enthalpy difference was big, air-conditioning system was according to the controlling value of programmable digital self-operated controller output, the startup quantity of decision refrigeration compressor and when starting.
By the enthalpy difference computing method, refrigeration system is controlled by temperature or humidity no longer separately, but the enthalpy difference that temperature, humidity combine is controlled.Enthalpy difference hour, system only need start heat temperature raising and fall wet and little cold refrigeration and can satisfy environmental requirement.Avoid a large amount of cooling dehumidifier and a large amount of heat temperature raisings, thereby saved energy consumption; When enthalpy difference was big, refrigeration system was according to the startup quantity of controlling value [0～100%] the decision refrigeration compressor of DDC output and when start, thereby realized stepped input as required, not only improved control accuracy but also reduced energy consumption.
In the present invention, adopt the programmable digital self-operated controller of PID account form,, can realize that adjustable range regulates from 0～100% staged if the user adopts is invariable frequency compressor.The user can set the start quantity of certain percentage correspondence arbitrarily, and the number of compressors of employing is many more, controls accurate more.
Advantage of the present invention: adopt advanced programmable digital self-operated controller in conjunction with PID (ratio, integration, differential) enthalpy difference algorithm.By calculating output PID[0～100%] value controls the unlatching quantity and the opening time of compressor.Solved the not high problem of module precision air conditioner control system control accuracy, temperature, problem such as humidity regulation is inaccurate have not only improved control accuracy but also reduced energy consumption.
Description of drawings
Fig. 1 is the control logic block diagram of the inventive method;
Fig. 2 is the air-conditioning system structural representation;
Fig. 3 is the electrical schematic diagram of air-conditioning system;
The specific embodiment
The enthalpy control operational formula of the inventive method is as follows:
In following formula, e (t) is the enthalpy signal of input, and Kp is a scale operation, and Ki ∫ is integral operation, and Kd d/dt differentiates, and K (1+1/Ti S+TdS) is the PID transfer function.
The structure of module precision air conditioner system as shown in Figure 2, compressor 1, evaporimeter 2, the heating PTC3, humidifier 4, device for drying and filtering 5, blower fan 6, expansion valve 7, condenser 8, screen pack 9; The user can select the module precision air conditioner unit of different refrigerating capacitys and control accuracy according to actual needs, arbitrarily arranges in pairs or groups.Module precision air conditioner system adopts program numbers self-operated controller and enthalpy control algolithm, because the micro computer fast operation can be finished a circuit controls in the very short time interval, can realize high-precision control.The operation program of controller establishment is PID (ratio, integration, a differential) compute mode, can avoid concussion, eliminates deviation, realizes that energy adjustment from 0～100% step-less adjustment, makes unit high accuracy, energy-saving run.
Adopt the inventive method, refrigeration system is controlled by temperature or humidity no longer separately, but the enthalpy difference that temperature, humidity combine is controlled.In enthalpy difference hour, system only need start heat temperature raising and falls wet and little cold refrigeration and can satisfy environmental requirement.Avoid a large amount of cooling dehumidifier and a large amount of heat temperature raisings, thereby saved energy consumption; When enthalpy difference was big, refrigeration system was according to the startup quantity of controlling value [0～100%] the decision refrigeration compressor of DDC output and when start, thereby realized stepped input as required, had not only improved control accuracy but also reduced energy consumption.
In the present invention, adopt the programmable digital self-operated controller of PID account form,, can realize that adjustable range regulates from 0～100% staged if the user adopts is invariable frequency compressor.The user can set the start quantity of certain percentage correspondence arbitrarily, and the number of compressors of employing is many more, controls accurate more.
The humidification amount size of humidifier and the humidity control of start/stop time controlled chamber; The unlatching of heater is by the temperature control of controlled chamber; The unlatching of compressor and unlatching quantity are controlled by the enthalpy that is subjected to closely to control room temperature, humidity correspondence.
Claims (1)
1, a kind of module precision air conditioner system control method, module precision air conditioner system is made up of following parts: a plurality of refrigerating circuits that programmable digital self-operated controller, one or more compressor are formed, one group of electrical heating PTC, an electrode humidifler is characterized in that:
Described control method comprises the steps:
1), temperature, the humidity of controlled environment are come out by sensor sensing and signal is sent to programmable digital self-operated controller in the system;
2), in the programmable digital self-operated controller, set and each temperature, humidity and the corresponding unique enthalpy of control accuracy requirement;
3), the enthalpy of programmable digital self-operated controller temperature that Temperature Humidity Sensor is sensed, humidity correspondence and the unique enthalpy corresponding with temperature, humidity set in the programmable digital self-operated controller compare, compare calculating by enthalpy difference, export a PID controlling value, this value scope is 0～100%; Computational methods as shown in the formula:
4), control according to enthalpy difference result of calculation, in enthalpy difference hour, air-conditioning system starts heat temperature raising and falls wet and little cold refrigeration and satisfy environmental requirement; When enthalpy difference was big, air-conditioning system was according to the controlling value of programmable digital self-operated controller output, the startup quantity of decision refrigeration compressor and when starting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100267860A CN100445657C (en) | 2004-04-08 | 2004-04-08 | Precisive module regulating method of air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100267860A CN100445657C (en) | 2004-04-08 | 2004-04-08 | Precisive module regulating method of air conditioner |
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| Publication Number | Publication Date |
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| CN1680756A CN1680756A (en) | 2005-10-12 |
| CN100445657C true CN100445657C (en) | 2008-12-24 |
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| CNB2004100267860A Expired - Fee Related CN100445657C (en) | 2004-04-08 | 2004-04-08 | Precisive module regulating method of air conditioner |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100456183C (en) * | 2005-10-24 | 2009-01-28 | 广东科龙电器股份有限公司 | Programmable test controller, user program method and control method of components and parts |
| CN100362294C (en) * | 2005-12-19 | 2008-01-16 | 东莞市广大制冷有限公司 | The Control Method of Screw Cooling Precision Air Conditioning System |
| CN100458295C (en) * | 2007-04-06 | 2009-02-04 | 东莞市广大制冷有限公司 | Hpid precision air-conditioning controlling method |
| CN103322648B (en) * | 2013-06-13 | 2016-09-14 | 浙江工业大学 | A kind of indoor temperature dynamic matrix predictive control method of central air-conditioning |
| CN104654534A (en) * | 2014-02-28 | 2015-05-27 | 柳州易舟汽车空调有限公司 | Controller of vehicle air conditioner and controlling method thereof |
| CN104132427A (en) * | 2014-08-04 | 2014-11-05 | 合肥天鹅制冷科技有限公司 | Automatic control system of air conditioning unit |
| EP3511638A4 (en) * | 2016-09-12 | 2019-10-09 | Technomirai Co., Ltd | Digital smart energy saving system, method, and program |
| CN108205342A (en) * | 2016-12-16 | 2018-06-26 | 财团法人工业技术研究院 | Sensing control device and method of controlled system |
| CN108826587B (en) * | 2018-04-25 | 2019-08-27 | 海南椰岛酒业发展有限公司 | A kind of central air-conditioning o controller and its control method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073512A (en) * | 1991-12-13 | 1993-06-23 | 上海石化总厂维纶厂职工技术协会 | Intelligent controller for air conditioning |
| CN1315682A (en) * | 2000-03-31 | 2001-10-03 | 天津美新建筑设计有限公司 | Adaptive frequency-conversion, speed-regulation and flow-changing control method and system |
| JP2002333190A (en) * | 2001-05-07 | 2002-11-22 | Yamatake Building Systems Co Ltd | System and method for controlling air conditioning |
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- 2004-04-08 CN CNB2004100267860A patent/CN100445657C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073512A (en) * | 1991-12-13 | 1993-06-23 | 上海石化总厂维纶厂职工技术协会 | Intelligent controller for air conditioning |
| CN1315682A (en) * | 2000-03-31 | 2001-10-03 | 天津美新建筑设计有限公司 | Adaptive frequency-conversion, speed-regulation and flow-changing control method and system |
| JP2002333190A (en) * | 2001-05-07 | 2002-11-22 | Yamatake Building Systems Co Ltd | System and method for controlling air conditioning |
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