CN101008519A - Variable static pressure control method and system for variable air-conditioning system - Google Patents
Variable static pressure control method and system for variable air-conditioning system Download PDFInfo
- Publication number
- CN101008519A CN101008519A CNA2007100669716A CN200710066971A CN101008519A CN 101008519 A CN101008519 A CN 101008519A CN A2007100669716 A CNA2007100669716 A CN A2007100669716A CN 200710066971 A CN200710066971 A CN 200710066971A CN 101008519 A CN101008519 A CN 101008519A
- Authority
- CN
- China
- Prior art keywords
- static pressure
- air
- variable
- controller
- end device
- 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.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a static-pressure variable control method of wind-variable air conditioning system, which comprises several wind-variable terminal with valve feedback parallel connected on one wind tube of air conditioner which has a fan frequency changer and a wind tube static pressure sensor on the wind tube, while the sensor is connected with one input of controller. The output of controller is connected to the fan frequency changer. The wind-variable terminal is connected to another input of controller. Or the air conditioner has several wind tubes while each tube is arranged with a wind tube static pressure sensor. The invention can adjust the fan frequency via the static pressure of wind tube, to realize stable and reliable control, while it can reduce the static pressure via the valve signal of wind-variable terminal at local load, to save energy.
Description
Technical field
The present invention relates to air conditioning and ventilation field, particularly relate to a kind of variable static pressure control method and system of air conditioning system with variable.
Background technology
Air conditioning system with variable is a kind of by changing the all-air conditioning system that air output satisfies the indoor load variation.This system has good energy-conservation and comfortableness, satisfies the good requirement of user to indoor air quality, is widely used in all kinds of buildings such as office building, hospital, library and gymnasium.
When air conditioning system with variable changes at air conditioner load, the air quantity variable end device controlling opening of valve changes the air-conditioning air output and satisfies the indoor load variation, after changing, the valve opening of air quantity variable end device causes again that the static pressure on the ajutage changes, therefore robot control system(RCS) satisfies the load variations demand according to total air output of static pressure signal or terminal valve position signal frequency conversion adjusting air-conditioning ventilating.Because air-conditioning system is a dynamic system, load can change at any time, so robot control system(RCS) is that air conditioning system with variable is stable, the key of energy-saving run, and static pressure control is the core of variable air rate robot control system(RCS).
Variable air rate static pressure control commonly used at present has dual mode: a kind of is constant static-pressure control, the robot control system(RCS) of this control mode is mainly by the air quantity variable end device 1 that does not have feedback, airduct static pressure transducer 2, the air-conditioning unit 3 and the controller 4 that have fan frequency converter are formed, as shown in Figure 1, its operation principle is (to be generally from air-conditioning unit 2/3 position) at the airduct place airduct static pressure transducer 2 is set, air quantity variable end device 1 changes air output by controlling opening of valve when load variations, valve opening changes and causes that the airduct static pressure changes, the controller 4 of robot control system(RCS) is according to setting the frequency of static pressure with the fan frequency converter of the deviation variable frequency adjustment air-conditioning unit 3 of actual measurement static pressure, make the static pressure measured value be stabilized in setting value, to satisfy the variation of system's air output demand.Another kind is to become static pressure control, this control mode robot control system(RCS) is mainly by the air quantity variable end device 5 of being with valve position feedback, the air-conditioning unit 3 and the controller 4 that have fan frequency converter are formed, as shown in Figure 2, its operation principle is that the air quantity variable end device 5 of band valve position feedback when load variations changes air output by controlling opening of valve, the controller 4 of robot control system(RCS) is gathered the valve position signal of each air quantity variable end device 5 in real time simultaneously, and comprehensively judge, by each valve position signal is added up, when reaching maximum opening if any the valve area of an air quantity variable end device 5, expression air-conditioning unit pressure fan frequency need improve; When the valve area of all air quantity variable end devices 5 during all in minimum aperture, expression air-conditioning unit pressure fan frequency need reduce; When having at least the valve area of an air quantity variable end device to remain between maximum opening and the minimum aperture, current air-conditioning unit pressure fan frequency is kept in expression.
These two kinds of control modes all have its pluses and minuses, constant static-pressure control mode and system are because control is with clearly defined objective, therefore control mode is simple and reliable, but setting static pressure in this control mode remains unchanged in the whole service process, and air conditioner load the valve of hour air quantity variable end device be in less aperture, therefore system's air-valve restriction loss is big, moves not energy-conservation; Become no matter air conditioner load size of static pressure control method and system, keep air quantity variable end device at larger opening and reduction ajutage static pressure as far as possible, therefore be beneficial to energy-conservation, but need only a valve position signal mistake in the system and just may cause the whole system collapse, and each valve position causes system's concussion, instability in real-time change in the system, so complicated, the less stable of system's control.
Summary of the invention
In order to overcome disadvantages of background technology, the purpose of this invention is to provide can be energy-conservation, the variable static pressure control method and the system of a kind of air conditioning system with variable that again can reliable and stable operation.
The technical scheme that its technical problem of solution of the present invention is adopted is:
One, a kind of variable static pressure control method of air conditioning system with variable
Adopt the air quantity variable end device of band valve position feedback, and the airduct static pressure transducer is set at the ajutage place, air quantity variable end device changes air output by controlling opening of valve when load variations, the controller of robot control system(RCS) is according to the frequency of initial static pressure setting value with the fan frequency converter of the deviation variable frequency adjustment air-conditioning unit of static pressure measured value, make the static pressure measured value be stabilized in setting value, to satisfy the variation of system's air output demand; Simultaneously, the controller of robot control system(RCS) is gathered the valve position signal of each air quantity variable end device in real time, and comprehensively judge, automatically adjust initial static pressure setting value, make system's static pressure under the situation that satisfies each air quantity variable end device demand, reduce the ajutage static pressure, thereby satisfy the needs of energy saving of system operation.
Air conditioning system with variable is provided with a plurality of airduct static pressure transducers, is the control foundation through selecting one of them sensor.
Two, a kind of variable static pressure control system of air conditioning system with variable
Comprise a plurality of air quantity variable end devices in parallel on the ajutage of the air-conditioning unit that has fan frequency converter, an airduct static pressure transducer is set on ajutage; The airduct static pressure transducer is connected with an input of controller, and the output of controller is connected with the fan frequency converter of air-conditioning unit.Described air quantity variable end device is the air quantity variable end device of band valve position feedback, and air quantity variable end device is connected with another input of controller.
The described air-conditioning unit that has fan frequency converter has a plurality of ajutage branch, an airduct static pressure transducer all is set in each ajutage branch, each airduct static pressure transducer is connected with an input of controller, and air quantity variable end device all is connected with another input of controller.
The present invention compares with background technology, and the beneficial effect that has is:
Therefore, after the present invention had adopted technique scheme, newly-increased investment was limited, but with clearly defined objective because of system's control, promptly regulated the pressure fan frequency according to the ajutage static pressure, therefore controlled reliable and stable; Can reduce the setting static pressure of system simultaneously according to the valve position signal of air quantity variable end device when sub-load, realize energy-saving run, therefore be a kind of take into account stable and energy-conservation static pressure control method and system.
Description of drawings
Fig. 1 is constant static-pressure control mode and system.
Fig. 2 becomes static pressure control method and system.
Fig. 3 is variable static pressure control method of the present invention and system.
Fig. 4 is the variable static pressure control method and the system of a plurality of static pressure transducers of the present invention.
Among the figure: 1. do not have the air quantity variable end device of valve position feedback, 2. airduct static pressure transducer 3. has the air-conditioning unit of fan frequency converter, 4. controller, the 5. air quantity variable end device of band valve position feedback.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
The air quantity variable end device 5 that has a plurality of band valve position feedback in parallel on the ajutage of air-conditioning unit 3 of fan frequency converter, an airduct static pressure transducer 2 is set on ajutage, this position is generally from air-conditioning unit 2/3 place, also can adjust according to the actual conditions of air-conditioning system; Air quantity variable end device 5 changes air output by controlling opening of valve when load variations, the controller 4 of robot control system(RCS) adopts the constant static-pressure control mode, promptly the initial static pressure setting value of basis makes the static pressure measured value be stabilized in setting value with the frequency of the fan frequency converter of the deviation variable frequency adjustment air-conditioning unit 3 of static pressure measured value, to satisfy the variation of system's air output demand; Simultaneously, the controller 4 of robot control system(RCS) is gathered the valve position signal of each air quantity variable end device 5 again in real time, and comprehensively judge: when reaching maximum opening (as 95%) as the valve position as one or several (can set) air quantity variable end devices 5, the static pressure setting value adds static pressure deviation delta P (can set) on currency; When the valve position of all or several (can set) air quantity variable end devices 5 all when minimum aperture (as 70%) is following, the static pressure setting value subtracts static pressure deviation delta P (can set) on currency.Generally speaking, establish when the initial static pressure of system setting value reaches maximum opening at the valve position of all air quantity variable end devices, the actual static pressure setting value when therefore moving is equal to or less than initial static pressure setting value.Therefore, adopt the present invention, robot control system(RCS) is according to the situation of each each air quantity variable end device 5, automatically adjust the static pressure setting value, make system's static pressure under the situation that satisfies each air quantity variable end device 5 demand, maintain lower level, thereby satisfy the needs of energy saving of system operation, as shown in Figure 3.
As a further improvement on the present invention, have at the air-conditioning unit 3 that has fan frequency converter under the situation of a plurality of ajutage branch, an airduct static pressure transducer 2 all is set, and each airduct static pressure transducer 2 is connected with the input of controller 4 in each ajutage branch.The controller 4 of robot control system(RCS) compares the actual measurement static pressure of each airduct static pressure transducer 2, selects wherein to have peaked airduct static pressure transducer 2 as the control foundation, regulates fan frequency conversion, as shown in Figure 4.
The above-mentioned specific embodiment is used for the present invention that explains, rather than limits the invention, and in the protection domain of spirit of the present invention and claim, any modification and change to the present invention makes all fall into protection scope of the present invention.
Claims (4)
1, a kind of variable static pressure control method of air conditioning system with variable, it is characterized in that: the air quantity variable end device that adopts the band valve position feedback, and the airduct static pressure transducer is set at the ajutage place, air quantity variable end device changes air output by controlling opening of valve when load variations, the controller of robot control system(RCS) is according to the frequency of initial static pressure setting value with the fan frequency converter of the deviation variable frequency adjustment air-conditioning unit of static pressure measured value, make the static pressure measured value be stabilized in setting value, to satisfy the variation of system's air output demand; Simultaneously, the controller of robot control system(RCS) is gathered the valve position signal of each air quantity variable end device in real time, and comprehensively judge, automatically adjust initial static pressure setting value, make system's static pressure under the situation that satisfies each air quantity variable end device demand, reduce the ajutage static pressure, thereby satisfy the needs of energy saving of system operation.
2, according to the variable static pressure control method of claims 1 described a kind of air conditioning system with variable, it is characterized in that: air conditioning system with variable is provided with a plurality of airduct static pressure transducers, is the control foundation through selecting one of them sensor.
3, a kind of variable static pressure control system of air conditioning system with variable comprises a plurality of air quantity variable end devices in parallel on the ajutage of the air-conditioning unit (3) that has fan frequency converter, and an airduct static pressure transducer (2) is set on ajutage; Airduct static pressure transducer (2) is connected with an input of controller (4), and the output of controller (4) is connected with the fan frequency converter of air-conditioning unit (3); It is characterized in that: described air quantity variable end device is the air quantity variable end device (5) of band valve position feedback, and air quantity variable end device (5) is connected with another input of controller (4).
4, according to the variable static pressure control system of claims 3 described a kind of air conditioning system with variable, it is characterized in that: the described air-conditioning unit (3) that has fan frequency converter has a plurality of ajutage branch, an airduct static pressure transducer (2) all is set in each ajutage branch, each airduct static pressure transducer (2) is connected with an input of controller (4), and air quantity variable end device (5) all is connected with another input of controller (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100669716A CN101008519A (en) | 2007-01-29 | 2007-01-29 | Variable static pressure control method and system for variable air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100669716A CN101008519A (en) | 2007-01-29 | 2007-01-29 | Variable static pressure control method and system for variable air-conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101008519A true CN101008519A (en) | 2007-08-01 |
Family
ID=38697062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100669716A Pending CN101008519A (en) | 2007-01-29 | 2007-01-29 | Variable static pressure control method and system for variable air-conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101008519A (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975434A (en) * | 2010-10-15 | 2011-02-16 | 杭州源牌环境科技有限公司 | Variable static pressure control method for variable air volume air conditioning system |
| CN102680031A (en) * | 2011-05-31 | 2012-09-19 | 邯郸市康创电气有限公司 | Method for measuring fan delivery by static pressure difference |
| CN103807986A (en) * | 2014-03-04 | 2014-05-21 | 中国人民解放军第二炮兵工程设计研究所 | Variable-air-volume ventilating system |
| CN104566808A (en) * | 2014-12-24 | 2015-04-29 | 珠海格力电器股份有限公司 | Air conditioner control method and device |
| CN104781613A (en) * | 2012-11-07 | 2015-07-15 | 西部风管（英国）有限公司 | Air movement system |
| CN105047058A (en) * | 2015-08-20 | 2015-11-11 | 长安大学 | Full-scale central air-conditioning and centralized heating integration experiment platform and control method therefor |
| CN106123254A (en) * | 2016-08-31 | 2016-11-16 | 中国建筑设计咨询有限公司 | A kind of heating ventilation air-conditioning system blower fan or the energy-saving control method of water pump |
| CN107062511A (en) * | 2017-06-29 | 2017-08-18 | 中铁第四勘察设计院集团有限公司 | A kind of distributed variable air rate supply air system and its control method |
| CN107120775A (en) * | 2017-06-29 | 2017-09-01 | 中铁第四勘察设计院集团有限公司 | A kind of subway plant management information system variable air rate supply air system and its control method |
| CN107268094A (en) * | 2017-08-09 | 2017-10-20 | 浙江华峰氨纶股份有限公司 | A kind of special gas of spandex fibre wraps up in silk spinning silk device |
| CN108168031A (en) * | 2017-12-21 | 2018-06-15 | 北京工业大学 | A kind of fine tuning that constant static-pressure value is reseted based on air-valve position responds air conditioner control method |
| CN110131811A (en) * | 2019-06-26 | 2019-08-16 | 中机中联工程有限公司 | Pressure difference control system and method suitable for MAU+FFU+DCC electronics toilet |
| CN110486905A (en) * | 2019-08-19 | 2019-11-22 | 珠海格力电器股份有限公司 | Fan static pressure automatic adjusting method, device and air-conditioning system |
| CN110686386A (en) * | 2019-10-12 | 2020-01-14 | 珠海格力电器股份有限公司 | Regional control method, device and system and air conditioning system |
| CN111762574A (en) * | 2020-06-16 | 2020-10-13 | 山东优斯特环保科技有限公司 | Novel gas conveying device |
| CN114076388A (en) * | 2020-08-14 | 2022-02-22 | 江森自控泰科知识产权控股有限责任合伙公司 | Automatic detection of suspected variable air volume units |
| CN115183391A (en) * | 2022-08-19 | 2022-10-14 | 珠海格力电器股份有限公司 | Air conditioner, air conditioner control method, and computer-readable storage medium |
-
2007
- 2007-01-29 CN CNA2007100669716A patent/CN101008519A/en active Pending
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975434A (en) * | 2010-10-15 | 2011-02-16 | 杭州源牌环境科技有限公司 | Variable static pressure control method for variable air volume air conditioning system |
| CN101975434B (en) * | 2010-10-15 | 2012-08-29 | 杭州源牌环境科技有限公司 | Variable static pressure control method for variable air volume air conditioning system |
| CN102680031A (en) * | 2011-05-31 | 2012-09-19 | 邯郸市康创电气有限公司 | Method for measuring fan delivery by static pressure difference |
| CN102680031B (en) * | 2011-05-31 | 2014-05-21 | 邯郸市康创电气有限公司 | Method for measuring fan delivery by static pressure difference |
| CN104781613A (en) * | 2012-11-07 | 2015-07-15 | 西部风管（英国）有限公司 | Air movement system |
| CN103807986B (en) * | 2014-03-04 | 2019-04-26 | 中国人民解放军第二炮兵工程设计研究所 | Variable air volume ventilating system |
| CN103807986A (en) * | 2014-03-04 | 2014-05-21 | 中国人民解放军第二炮兵工程设计研究所 | Variable-air-volume ventilating system |
| CN104566808A (en) * | 2014-12-24 | 2015-04-29 | 珠海格力电器股份有限公司 | Air conditioner control method and device |
| CN105047058A (en) * | 2015-08-20 | 2015-11-11 | 长安大学 | Full-scale central air-conditioning and centralized heating integration experiment platform and control method therefor |
| CN106123254A (en) * | 2016-08-31 | 2016-11-16 | 中国建筑设计咨询有限公司 | A kind of heating ventilation air-conditioning system blower fan or the energy-saving control method of water pump |
| CN106123254B (en) * | 2016-08-31 | 2018-11-13 | 中国建筑设计咨询有限公司 | A kind of energy-saving control method of heating ventilation air-conditioning system wind turbine or water pump |
| CN107062511A (en) * | 2017-06-29 | 2017-08-18 | 中铁第四勘察设计院集团有限公司 | A kind of distributed variable air rate supply air system and its control method |
| CN107120775A (en) * | 2017-06-29 | 2017-09-01 | 中铁第四勘察设计院集团有限公司 | A kind of subway plant management information system variable air rate supply air system and its control method |
| CN107268094A (en) * | 2017-08-09 | 2017-10-20 | 浙江华峰氨纶股份有限公司 | A kind of special gas of spandex fibre wraps up in silk spinning silk device |
| CN108168031A (en) * | 2017-12-21 | 2018-06-15 | 北京工业大学 | A kind of fine tuning that constant static-pressure value is reseted based on air-valve position responds air conditioner control method |
| CN108168031B (en) * | 2017-12-21 | 2020-01-24 | 北京工业大学 | Fine-tuning response ventilation air conditioner control method based on air valve position resetting static pressure value |
| CN110131811A (en) * | 2019-06-26 | 2019-08-16 | 中机中联工程有限公司 | Pressure difference control system and method suitable for MAU+FFU+DCC electronics toilet |
| CN110131811B (en) * | 2019-06-26 | 2024-03-29 | 中机中联工程有限公司 | Differential pressure control system and method suitable for MAU+FFU+DCC electronic clean room |
| CN110486905A (en) * | 2019-08-19 | 2019-11-22 | 珠海格力电器股份有限公司 | Fan static pressure automatic adjusting method, device and air-conditioning system |
| CN110486905B (en) * | 2019-08-19 | 2020-09-22 | 珠海格力电器股份有限公司 | Fan static pressure automatic adjusting method and device and air conditioning system |
| CN110686386A (en) * | 2019-10-12 | 2020-01-14 | 珠海格力电器股份有限公司 | Regional control method, device and system and air conditioning system |
| CN110686386B (en) * | 2019-10-12 | 2021-09-14 | 珠海格力电器股份有限公司 | Regional control method, device and system and air conditioning system |
| CN111762574A (en) * | 2020-06-16 | 2020-10-13 | 山东优斯特环保科技有限公司 | Novel gas conveying device |
| CN114076388A (en) * | 2020-08-14 | 2022-02-22 | 江森自控泰科知识产权控股有限责任合伙公司 | Automatic detection of suspected variable air volume units |
| CN115183391A (en) * | 2022-08-19 | 2022-10-14 | 珠海格力电器股份有限公司 | Air conditioner, air conditioner control method, and computer-readable storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101008519A (en) | Variable static pressure control method and system for variable air-conditioning system | |
| CN201297737Y (en) | Variable static pressure control system of variable air volume air-conditioning system | |
| CN101975434B (en) | Variable static pressure control method for variable air volume air conditioning system | |
| CN107143979B (en) | Control method, control device and the air conditioner of multi-split air conditioner | |
| CN102705956B (en) | Optimal control device and method for primary pump variable flow system | |
| CN103438508B (en) | Variable air delivery through floor air-supply end system and air quantity control method thereof | |
| CN105352109B (en) | VAV box temperature control system and method based on weather compensation | |
| CN104374036B (en) | The control method and air-conditioner set of air-conditioning | |
| US20080139105A1 (en) | Duct static pressure control | |
| CN104654538A (en) | Method and device for controlling air output | |
| CN108168031B (en) | Fine-tuning response ventilation air conditioner control method based on air valve position resetting static pressure value | |
| CN205372921U (en) | Adaptive variable blast volume air conditioner air supply fan speed controller | |
| CN102778003B (en) | Control method and system for humidifying indoor air | |
| CN102954557A (en) | Air-conditioning system | |
| CN103047737A (en) | Air supply temperature control method of variable air quantity air conditioning system | |
| CN109990445B (en) | Energy-saving controller and method for variable air volume air conditioning system | |
| CN108131805B (en) | Multi-split self-adaptive adjustment control method and device | |
| CN102721151A (en) | Humidification control device and control method thereof | |
| CN202598765U (en) | Optimized control device of variable primary flow system | |
| CN101922779A (en) | Fan coil system and control method and device thereof | |
| CN108800314B (en) | Pressure self-adaptive energy-saving noise-reducing variable air volume air conditioning system and control method thereof | |
| CN1854627A (en) | Pressure-variable and total-blast duplex controlling method for blast-variable air-conditioner system | |
| CN110486802B (en) | Air conditioner, air supply adjusting system and method thereof | |
| CN209801723U (en) | Digital variable air volume device | |
| CN107525231A (en) | A kind of VAV variable air volume systems become static pressure and total blast volume double control strategy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |