CN1297786C - Cold / worming water energy-saving apparatus of central air conditioner - Google Patents
Cold / worming water energy-saving apparatus of central air conditioner Download PDFInfo
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- CN1297786C CN1297786C CNB2004100402561A CN200410040256A CN1297786C CN 1297786 C CN1297786 C CN 1297786C CN B2004100402561 A CNB2004100402561 A CN B2004100402561A CN 200410040256 A CN200410040256 A CN 200410040256A CN 1297786 C CN1297786 C CN 1297786C
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Abstract
The present invention discloses a freezing/ warm water energy-saving device of a central air conditioner, which is composed of an intelligent controller, an input module, an output module, a transducer, a transmitter, etc. Different running tactics are set according to service quality grades of seasons, days of weeks and hours. Running software is programmed by the intelligent controller through collecting running parameters of a freezing/warm water system in a real-time mode and according to a fuzzy control theory to identify, calculate and decide a system state. A freezing/warm water pump is controlled by the output of the running software through the transducer, the installation of an air conditioner meets the requirements, the air conditioner runs in an optimization mode, and 60% to 80% of electrical energy is saved. The present invention is also compatible with two kinds of central air-conditioning systems of a compression type cold water machine and an absorption type cold/warm water machine. The present invention can be separated from a central controller to solely run. Manual and automatic work modes are set. The present invention has favorable practicality and reliability.
Description
Technical field
The present invention relates to a kind of central air-conditioning energy device, particularly a kind of freezing/warm water energy saving of system method and apparatus.
Background technology
Freezing/warm water is the mobile cold/thermal medium of central air-conditioning, and the energy-conservation of freezing/warm water system is the main path of central air-conditioning energy.
Traditional central air-conditioning is freezing/the warm water system be one with the irrelevant constant flow feed system of actual dynamic needs, in case the startup air-conditioner host, then regardless of the payload of air-conditioning, freezing/warm water pump is fully loaded (being 50Hz) work all the time, consumed power is very big, thereby causes huge energy dissipation.
Existing central air-conditioning is freezing/and warm water energy saving of system method has two kinds: and a kind of is according to the central air-conditioning load variations, and freezing/warm water is implemented the control of unsteady flow amount; Another kind is manually to set running frequency.These two kinds of methods freezing/warm water pump that all is to use frequency converter to make is worked being lower than under the load shedding state of 50Hz, thereby has realized energy-conservation.But they, (1) can not compatible compact formula cooling-water machine and absorption cold/two kinds of dissimilar central air conditioner systems of warm water machine.(2) under the support of central controller, could move, can not work alone; Perhaps only use frequency converter timing operation (promptly not disposing central controller), but its energy-saving effect is only in 30%.(3) there are many defectives in aspects such as the setting of the setting of operational factor, function and working method, software programming, operational reliability, have much room for improvement and perfect.
Summary of the invention
In view of above-mentioned existing central air-conditioning freezing/present situation of warm water energy saving of system method and apparatus, the objective of the invention is to design a kind of can compatible compact formula cooling-water machine with absorption cold/two kinds of dissimilar central air conditioner systems of warm water machine with can break away from the central controller independent operating, reliable, the Remarkable Energy Saving central air-conditioning is freezing/the warm water energy saver.
The object of the present invention is achieved like this:
This central air-conditioning is freezing/warm water energy saving of system method, the intelligent controller that it is characterized in that this device can move by independent Energy Saving Control, by real-time collection freezing/the warm water supply water temperature, freezing/the warm water return water temperature, freezing/the warm water total flow, for dynamic parameters such as backwater pressure reduction, operating software with the fuzzy control theory establishment, carry out identification by intelligent controller, computing, decision-making, control its output according to real-time load needs, through Frequency Converter Control freezing/the warm water pump rotating speed is being lower than under the load shedding state of 50Hz and turning round, follow the tracks of real-time load and need achieve optimized running, thereby realize energy-conservation by a relatively large margin and compatible compact formula cooling-water machine and absorption cold/warm water machine two class central air conditioner systems.
In order to realize said method, the invention discloses a kind of central air-conditioning freezing/the warm water energy saver, it is characterized in that by intelligent controller, the analog quantity input module, analog output module, digital quantity input module, the digital quantity output module, two frequency converters, the supply water temperature transmitter, the return water temperature transmitter, for the backwater pressure difference transmitter, total flow meter transmitter and a plurality of relay terminal plate constitute, intelligent controller passes through communication bus respectively, last connection letter interface, under connect each the input, output module, communication interface is communicated with central controller, the output of analog output module and relay terminal plate is connected with each frequency converter input respectively, inverter output terminal respectively with the analog quantity input module, the input of digital quantity input module is connected with working barrel, the supply water temperature transmitter, the return water temperature transmitter, total flow meter transmitter, all link to each other with analog quantity input module input for the output of backwater pressure difference transmitter, the output of analog output module also is connected with by-passing valve.
Central air-conditioning with said structure is freezing/the warm water energy saver, in the design of software and hardware, taken into full account realization compatible compact formula cooling-water machine and absorption cold/warm water machine two class central air conditioner systems.
Energy-saving principle of the present invention is:
By season, Sunday, hour service quality rating is provided with the freezing/warm water supply water temperature value of air-conditioner host, freezing/warm water return water temperature value, detect freezing/warm water supply water temperature in real time, freezing/the warm water return water temperature, dynamic parameters such as freezing/warm water total flow and confession backwater pressure reduction, with the return water temperature value of actual measurement and the difference of the return water temperature value of setting is main foundation, difference with the supply water temperature value of supply water temperature value and the setting of actual measurement is to assist foundation, by the built-in strong fuzzy control software of applicability, intelligent controller by this device is done identification, computing, decision-making and correction obtain the energy-conservation output of optimization;
The aperture of by-passing valve is controlled in above-mentioned output, controls the rotating speed of freezing/warm water pump, and water pump is worked under the load shedding state, makes the needs of freezing/warm water system real-time tracking air conditioner load, can satisfy the air conditioning comfortableness requirement, can reach optimum energy-saving effect again.
This device guarantee minimum freezing/warm water traffic requirement and water pump under the prerequisite of stall, can not save electric energy 60%-80%.Simultaneously, because freezing/warm water pump adopts soft opening/stop, and becomes low-speed running by running up during work, reduced mechanical wear, the noise level of water pump effectively and do not constituted heavy current surge, improved the security of air-conditioning system operation power supply grid.
Description of drawings
Fig. 1 is composition frame chart of this device and the position view in system thereof
Fig. 2 is the circuit theory diagrams of this device
The specific embodiment
Embodiment 1
This device is made up of intelligent controller, analog quantity input module, analog output module, digital quantity input module, digital quantity output module, four critical pieces such as relay terminal plate, frequency converter 11VF, frequency converter 12VF, supply water temperature transmitter, return water temperature transmitter, confession backwater pressure difference transmitter and total flow transmitter shown in the inner branch of dotted line among Fig. 1.Above-mentioned parts except that frequency converter 12VF and 4 transmitters 11 racks of all packing into, frequency converter 12VF 12 racks of packing into, four transmitters are installed in freezing/warm water pipeline.
Intelligent controller is by the RS-485 communication bus, and interface PCI-1612A/9 is believed in last connection, and the latter communicates by letter with central controller by the RS-232 serial ports.Intelligent controller is by connecting each input, output module under the RS-485 communication bus.Detected parameters such as freezing/the warm water supply water temperature, freezing/the warm water return water temperature, freezing/warm water total flow and confession backwater pressure reduction are imported this device by transmitter separately.The executive component of this device output is that freezing/warm water pump and freezing/warm water supply the by-passing valve between the return main.
As seen from Figure 2, the intelligent controller of this device (HCBT-5510M) is 16 independent controls based on PC.Intelligent controller connects central controller on RS-485 external communication bus process communication interface PCI-1612A/9, realize human-computer dialogue by central controller; This intelligent controller is by connecting each input and output module, this device of management operating voluntarily under the RS-485 internal communication bus.
After analog quantity parameters such as the supply water temperature that the analog quantity input module will be gathered in real time, return water temperature, total flow, confession backwater pressure reduction, frequency converter 11VF running frequency, frequency converter 12VF running frequency are made digitized processing, send into intelligent controller through the RS-485 internal bus.Intelligent controller is according to the operating software with the establishment of configuration form, above-mentioned input information is carried out identification, computing, decision-making and correction, the output optimal decision-making is through the running frequency of analog output module, frequency converter 11VF, frequency converter 12VF control working barrel 1 and working barrel 2.
The operating software of this device, according to the effective resource function of priori, boundary condition, I/O function etc., press fuzzy control rule establishment, cover with the compression cooling-water machine and be air-conditioner host or be the freezing/warm water energy saving of system of air-conditioner host with absorption cold/warm water machine.
The operation conditions of this device, i.e. the on/off of each chilled water pump, fault-signal, manual run signal, run signal automatically, the operation/fault-signal of each frequency converter is through digital quantity input module, and internal bus is sent into intelligent controller; These information are one of foundations of moving and resolving.The control of this device, index signal, promptly each frequency converter opens/stops signal, operation/fault-signal; On/off signal, fault-signal between each chilled water pump and each frequency converter; The automatic run signal of each rack, by intelligent controller output, through internal bus, digital quantity output module, relay terminal plate, each control relay and indicator lamp in the feed apparatus.
Be debugging, maintenance and repair and the emergency operating that makes things convenient for this device, the present invention is provided with pure manual work mode, when promptly intelligent controller does not participate in work, and freezing/warm water pump operation that the manual adjustments frequency converter frequency is controlled.
Claims (2)
1, a kind of central air-conditioning is freezing/the warm water energy saver, it is characterized in that by intelligent controller, the analog quantity input module, analog output module, digital quantity input module, the digital quantity output module, two or more frequency converters, a plurality of relay terminal plates, the supply water temperature transmitter, the return water temperature transmitter, total flow meter transmitter and confession backwater pressure difference transmitter constitute, intelligent controller passes through communication bus, last connection letter interface and central controller, in order to realize human-computer dialogue, under connect each the input, output module is in order to Information Monitoring output controlled quentity controlled variable and the independent Energy Saving Control operation of realization; The output of the terminal board of analog output module and relay is connected with each frequency converter input respectively, and inverter output terminal is connected with the input of working barrel, analog quantity input module and digital quantity input module respectively; Each transmitter output links to each other with analog quantity input module input, and the output of analog output module also is connected with by-passing valve.
2, according to the described central air-conditioning of claim 1 freezing/the warm water energy saver, it is characterized in that each frequency converter input control end be provided with automatic operation and manually operation select shelves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100402561A CN1297786C (en) | 2004-07-20 | 2004-07-20 | Cold / worming water energy-saving apparatus of central air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100402561A CN1297786C (en) | 2004-07-20 | 2004-07-20 | Cold / worming water energy-saving apparatus of central air conditioner |
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| Publication Number | Publication Date |
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| CN1598425A CN1598425A (en) | 2005-03-23 |
| CN1297786C true CN1297786C (en) | 2007-01-31 |
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| CNB2004100402561A Expired - Fee Related CN1297786C (en) | 2004-07-20 | 2004-07-20 | Cold / worming water energy-saving apparatus of central air conditioner |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7925385B2 (en) * | 2006-03-08 | 2011-04-12 | Itt Manufacturing Enterprises, Inc | Method for optimizing valve position and pump speed in a PID control valve system without the use of external signals |
| CN101012836B (en) * | 2006-12-29 | 2010-05-19 | 杭州电子科技大学 | Variable-frequency speed-adjusting energy-saving water pump fuzzy control method |
| CN101561173B (en) * | 2009-05-15 | 2010-09-08 | 魏占海 | Electricity-saving system of circulating pump in central air conditioner |
| CN102135311B (en) * | 2011-04-06 | 2013-05-08 | 华南理工大学 | Air conditioning system integral optimized control device |
| CN102997371A (en) * | 2012-12-14 | 2013-03-27 | 安徽日源环保能源科技有限公司 | Variable-flow control cabinet for ground heat source water |
| CN108443958A (en) * | 2018-03-29 | 2018-08-24 | 浙江盾安自控科技有限公司 | The adjusting method and system of heating system |
| CN111664550A (en) * | 2019-01-18 | 2020-09-15 | 深圳创新奇智科技有限公司 | Energy efficiency optimization method and system based on prediction model and optimization algorithm |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2472116Y (en) * | 2001-03-20 | 2002-01-16 | 广东省科学院自动化工程研制中心 | Fuzzy control energy saver for central air conditioner |
| CN1375665A (en) * | 2001-03-20 | 2002-10-23 | 广东省科学院自动化工程研制中心 | Intelligent power saving system for central air conditioner |
| CN1415915A (en) * | 2002-08-27 | 2003-05-07 | 贵州华城楼宇科技有限公司 | Self-adapting energy saving control device with variable flux for compression type central conditioner |
| CN1455199A (en) * | 2003-03-25 | 2003-11-12 | 贵州汇通华城楼宇科技有限公司 | Integrated control method of energy-saving control system for central air conditioning and its basic module |
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- 2004-07-20 CN CNB2004100402561A patent/CN1297786C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2472116Y (en) * | 2001-03-20 | 2002-01-16 | 广东省科学院自动化工程研制中心 | Fuzzy control energy saver for central air conditioner |
| CN1375665A (en) * | 2001-03-20 | 2002-10-23 | 广东省科学院自动化工程研制中心 | Intelligent power saving system for central air conditioner |
| CN1415915A (en) * | 2002-08-27 | 2003-05-07 | 贵州华城楼宇科技有限公司 | Self-adapting energy saving control device with variable flux for compression type central conditioner |
| CN1455199A (en) * | 2003-03-25 | 2003-11-12 | 贵州汇通华城楼宇科技有限公司 | Integrated control method of energy-saving control system for central air conditioning and its basic module |
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