CN1297787C - Chilled water energy-saving apparatus of cental air conditioner - Google Patents
Chilled water energy-saving apparatus of cental air conditioner Download PDFInfo
- Publication number
- CN1297787C CN1297787C CNB2004100402576A CN200410040257A CN1297787C CN 1297787 C CN1297787 C CN 1297787C CN B2004100402576 A CNB2004100402576 A CN B2004100402576A CN 200410040257 A CN200410040257 A CN 200410040257A CN 1297787 C CN1297787 C CN 1297787C
- Authority
- CN
- China
- Prior art keywords
- cooling water
- frequency converter
- module
- output
- present
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
The present invention discloses an energy saving device of cooling water of a central air conditioner. The present invention is composed of an intelligent controller, an input module, an output module, a frequency converter, a transmitter, etc. By collecting the dynamic parameters of a cooling water system in a real time, according to operation software which is programmed by using a fuzzy control rule, the intelligent controller is used for identification, calculation and decision, and the output of the dynamic parameters controls a cooling water pump and a cooling tower fan through the frequency converter, so that the dynamic parameters are optimized to operate according to the dynamic requirements of the cooling of the main machine of the air conditioner. Electric energy is saved by 60% to 80%. The present invention combines two central air conditioners of a compression type cooling water machine and an absorption type refrigeration /heating water machine. The energy saving device can disengage from a central controller to operate independently. The present invention has a manual operation mode and an automatic operation mode, and therefore, the present invention has good applicability and reliability.
Description
Technical field
The present invention relates to a kind of central air-conditioning energy device, particularly a kind of central air-conditioning cooling water system energy saver.
Background technology
The central air-conditioning cooling water is in order to ensure the operate as normal and the Energy Efficiency Ratio of air-conditioner host, and the energy-conservation of cooling water system is the energy-conservation important channel of central air conditioner system.
Traditional central air-conditioning cooling water system be one with the irrelevant constant flow feed system of actual dynamic needs, in case startup air-conditioner host, no matter air conditioner load size, the cooling water pump of system and blower fan of cooling tower be fully loaded (being 50Hz) work all the time, consumed power is very big, causes very big energy dissipation.
Existing central air-conditioning cooling water system power-economizing method has two kinds: a kind of is variation according to air conditioner load, and cooling water is implemented the control of unsteady flow amount; Another kind is manually to set running frequency.These two kinds of methods all are to use frequency converter that cooling water pump and blower fan of cooling tower are worked being lower than under the load shedding state of 50Hz, thereby have realized energy-conservation.But they, (1) can not compatible compact formula cooling-water machine and two kinds of dissimilar central air conditioner systems of absorption cold (temperature) water machine.(2) must under the support of central controller, could move; Perhaps only use frequency converter timing operation (promptly device is unworthy of putting central controller), but its energy-saving effect is only in 30%.(3) many defectives of existing of 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 the present situation of present central air-conditioning cooling water system power-economizing method and energy-saving equipment, the objective of the invention is to design a kind of energy compatible compact formula cooling-water machine and absorption cold/two kinds of dissimilar central air conditioner systems of warm water machine and independent energy-saving run, reliable, the Remarkable Energy Saving central air-conditioning cooling water system energy saver of energy.
The present invention realizes above-mentioned purpose by such technical scheme: this central air-conditioning cooling water energy saver is characterised in that it is by intelligent controller, the analog quantity input module, analog output module, digital quantity input module, the digital quantity output module, a plurality of relay terminal plates and three frequency converters, the leaving water temperature transmitter, the inflow temperature transmitter constitutes, intelligent controller is by being communicated with letter interface and central controller on the communication bus, under connect each input/output module, the output of digital module is connected with the relay terminal plate, and the output of analog output module is connected with the frequency converter input.Frequency converter input control end is provided with automatic operation/manual operation and selects shelves.
Energy-saving principle of the present invention is: detecting inflow temperature, the leaving water temperature of cooling water in real time, serves as the foundation of control cooling water pump with the difference of the leaving water temperature value that records and inflow temperature value; Difference with the inflow temperature a reference value of the inflow temperature value that records and setting is the energy-conservation foundation of control blower fan of cooling tower; By the built-in strong fuzzy control software of applicability, do identification, computing, decision-making and correction by the intelligent controller of this device; Rotating speed with optimized output control cooling water pump of intelligent controller and blower fan of cooling tower, make their load shedding work, the cooling that realizes cooling water system real-time tracking air-conditioner host needs, and under the prerequisite that ensures the air-conditioner host trouble free service, reaches best energy-saving effect.
This device can be saved electric energy 60%-80% under the prerequisite of guaranteeing central air conditioner main machine trouble free service and comfort of air conditioner.Simultaneously, because soft the opening of cooling water pump and blower fan of cooling tower/stop, become low-speed running by running up during work, effectively reduced mechanical wear, the noise level of water pump and blower fan and do not constituted heavy current surge power supply grid, improved the air-conditioning system operation security.
Description of drawings
Fig. 1 is the composition frame chart of this device
Fig. 2 is the theory diagram-1 of this device
Fig. 3 is the theory diagram-2 of this device
The specific embodiment
As shown in the figure, this device is by being made up of 21 racks, 22 racks and 31 racks.Critical piece in 21 racks is intelligent controller, analog quantity input module, analog output module, digital quantity input module, digital quantity output module, relay terminal plate (4) and frequency converter 21VF; Critical piece in 22 racks is frequency converter 22VF; Critical piece in 31 racks is intelligent controller, analog quantity input module, analog output module, digital quantity input module, digital quantity output module, relay terminal plate (2) and frequency converter 31VF.
The intelligent controller of 21 racks and 31 racks is by being communicated with letter interface PCI-1612A/9 on the RS-485 communication bus, the latter communicates by letter with central controller by the RS-232 serial ports.Two intelligent controllers connect separately input, output module respectively down by the RS-485 internal bus.Cooling water leaving water temperature and inflow temperature are imported 21 racks by sensor and transmitter separately, and inflow temperature is imported 31 racks by sensor and transmitter.The executive component of 21 racks output is a cooling water pump, and the executive component of 31 racks output is a blower fan of cooling tower.Leaving water temperature transmitter and inflow temperature transmitter are installed in the scene of cooling water pipeline.
Two intelligent controllers (HCBT-5510M) of this device are based on 16 independent controls of PC.They through connecting central controller on the communication interface PCI-1612A/9, can realize human-computer dialogue through the RS-485 external communication bus; By connecting each input and output module under the RS-485 internal communication bus, finish Information Monitoring, output controlled quentity controlled variable, can manage, move this device voluntarily.
Cold in-water temperature and return water temperature that the analog quantity input module of 21 racks will be gathered in real time after the analog quantity parameter digitlizations such as frequency converter 21VF running frequency and frequency converter 22VF running frequency, are sent into intelligent controller through the RS-485 internal bus.Intelligent controller carries out identification, computing, decision-making and correction according to the operating software with the establishment of configuration form to above-mentioned input information, and the operation of each cooling water pump is controlled in the output optimal decision-making through analog output module, frequency converter 21VF, frequency converter 22VF.Operational software, according to the effective resource function of priori, boundary condition, I/O functions etc. are pressed fuzzy control rule establishment, and covering with compression cooling-water machine or absorption cold (temperature) water machine is that the cooling water system of air-conditioner host is energy-conservation.
21, the operation conditions of 22 racks, the i.e. on/off of each cooling water pump, fault-signal, manually run signal, automatic run signal, operation/the fault-signal of each frequency converter is sent into intelligent controller through digital quantity input module, internal bus, and these information are foundations that device moves and resolves.21, the control index signal of 22 racks, promptly each frequency converter opens/stops signal, operation/fault-signal; On/off signal, fault-signal between each cooling 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, is given each control relay and indicator lamp in 21,22 racks.
Debugging, maintenance and repair and emergency operating for making things convenient for this device are provided with pure manual mode, and promptly intelligent controller does not participate in work, the operation of manual adjustments frequency converter frequency.
The operation principle of 31 racks and 21,22 racks are basic identical.Not existing together is that 31 racks only need be gathered the inflow temperature value, the several blower fan of cooling tower of frequency converter 31VF drive in parallel.
Claims (2)
1, a kind of central air-conditioning cooling water system energy saver, it is characterized in that constituting with upconverter, a plurality of relay terminal plate, leaving water temperature transmitter, inflow temperature transmitter by intelligent controller, analog quantity input module, analog output module, digital quantity input module, digital quantity output module, three or three, intelligent controller passes through communication bus, last connection letter interface and central controller, in order to realize human-computer dialogue by central controller, under connect each input/output module, in order to Information Monitoring, export controlled quentity controlled variable and realize the operation of independent Energy Saving Control; The output of analog output module and relay terminal plate is connected with each frequency converter input respectively, inverter output terminal is connected with the input of working barrel, blower fan of cooling tower, analog quantity input module and digital quantity input module respectively, and each transmitter output is connected with the input of analog quantity input module.
2,, it is characterized in that each frequency converter input control end and frequency converter have automatically between the two and manually select grade according to the described central air-conditioning cooling water of claim 1 energy saver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100402576A CN1297787C (en) | 2004-07-20 | 2004-07-20 | Chilled water energy-saving apparatus of cental air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100402576A CN1297787C (en) | 2004-07-20 | 2004-07-20 | Chilled water energy-saving apparatus of cental air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1598426A CN1598426A (en) | 2005-03-23 |
| CN1297787C true CN1297787C (en) | 2007-01-31 |
Family
ID=34664564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100402576A Expired - Fee Related CN1297787C (en) | 2004-07-20 | 2004-07-20 | Chilled water energy-saving apparatus of cental air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1297787C (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1321295C (en) * | 2005-12-01 | 2007-06-13 | 贵州华城楼宇科技有限公司 | Cold-hot electric combined integrated energy-saving intelligent control device |
| CN100445655C (en) * | 2007-01-23 | 2008-12-24 | 贵州汇通华城楼宇科技有限公司 | Heating ventilating and air conditioning hydraulic dynamic regulation method and device based on energy distribution equilibrium |
| CN102705957B (en) * | 2012-06-07 | 2014-06-11 | 华南理工大学 | Method and system for predicting hourly cooling load of central air-conditioner in office building on line |
| CN102779228B (en) * | 2012-06-07 | 2015-06-03 | 华南理工大学 | Method and system for online prediction on cooling load of central air conditioner in marketplace buildings |
| CN103868191A (en) * | 2012-12-12 | 2014-06-18 | 同方泰德国际科技(北京)有限公司 | Energy-saving control cabinet suitable for central air-conditioning system cooling tower |
| CN104089362B (en) * | 2014-06-03 | 2016-09-28 | 杭州哲达科技股份有限公司 | A kind of central air conditioning cooling water system cooling effectiveness maximization method and control device |
| CN104534610B (en) * | 2014-07-07 | 2017-07-07 | 陈好 | A kind of central air-conditioning energy-saving system Based Intelligent Control operation method |
| CN104329777B (en) * | 2014-11-19 | 2017-02-22 | 珠海格力电器股份有限公司 | Frequency control method and system |
| CN107036231A (en) * | 2016-12-28 | 2017-08-11 | 杭州裕达自动化科技有限公司 | Cooling tower intelligent energy-saving control method in central air-conditioning monitoring system |
| CN111256293A (en) * | 2020-02-24 | 2020-06-09 | 清华大学 | Air conditioner energy-saving control system for large system of subway station |
| CN113175743A (en) * | 2021-04-15 | 2021-07-27 | 江苏天纳节能科技股份有限公司 | Special integrated intelligent driver for fan and water pump of central air-conditioning energy-saving control system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5644541A (en) * | 1979-09-17 | 1981-04-23 | Mitsubishi Electric Corp | Controller for 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 |
| CN2578712Y (en) * | 2003-01-08 | 2003-10-08 | 北京科瑞易联节能科技发展有限公司 | Central hot water supply pump frequency variable controller of central air 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 |
| CN2594705Y (en) * | 2002-12-31 | 2003-12-24 | 天津新技术产业园区锦华四通科技有限公司 | Water-pump energy-saving controller of central air-conditioner |
-
2004
- 2004-07-20 CN CNB2004100402576A patent/CN1297787C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5644541A (en) * | 1979-09-17 | 1981-04-23 | Mitsubishi Electric Corp | Controller for 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 |
| CN2594705Y (en) * | 2002-12-31 | 2003-12-24 | 天津新技术产业园区锦华四通科技有限公司 | Water-pump energy-saving controller of central air-conditioner |
| CN2578712Y (en) * | 2003-01-08 | 2003-10-08 | 北京科瑞易联节能科技发展有限公司 | Central hot water supply pump frequency variable controller of central air 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1598426A (en) | 2005-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100523635C (en) | Intelligent cluster control system of central air-conditioning | |
| CN101498494B (en) | Economical operation method for central air conditioning system | |
| CN212132815U (en) | Intelligent cold station control system | |
| CN1297787C (en) | Chilled water energy-saving apparatus of cental air conditioner | |
| CN109917646B (en) | System and method for optimizing operation of regional cooling and heating equipment | |
| CN102062459A (en) | Energy-saving control system of central air conditioner | |
| CN201637037U (en) | Control device for air-conditioning unit | |
| CN1916519A (en) | System of adjusting quantity of cold, and adjustment method for central cooling in region | |
| CN1869533A (en) | Energy-saving device of network type digital multivariable central air conditioning system | |
| CN2703223Y (en) | Central air conditioner energy-saving controlling device | |
| CN101660815B (en) | Air-conditioning system and control method thereof | |
| CN102022799B (en) | Energy-saving control method for central air conditioner system | |
| CN110986289B (en) | Air conditioner fan coil and modular variable frequency air conditioner host linkage control method | |
| CN109765951B (en) | Electrical cabinet temperature and humidity regulation method, system and medium based on heterogeneous data analysis | |
| CN201014677Y (en) | Central air-conditioning intelligent group control device | |
| CN105020850B (en) | A kind of central air-conditioning wind cabinet intelligent drive device based on embedded technology | |
| CN202581676U (en) | Comprehensive frequency conversion system of circulating pump | |
| CN201293423Y (en) | Highly effective energy-conserving control system of central air-conditioner | |
| CN102635921A (en) | Energy-saving system and energy-saving method by controlling comprehensive frequency conversion of circulating pump | |
| CN214536620U (en) | Network architecture of air-conditioning and air-water coordination energy-saving control device of subway station | |
| CN2842275Y (en) | Can change self-regulating central air-conditioning energy-saving system according to cooling load | |
| CN1297786C (en) | Cold / worming water energy-saving apparatus of central air conditioner | |
| CN2636141Y (en) | Energy saving controller for monitoring and controlling operation of circulation water system of central air conditioner | |
| CN107036231A (en) | Cooling tower intelligent energy-saving control method in central air-conditioning monitoring system | |
| CN105674517A (en) | Precise air conditioner energy saving device for machine room and energy-saving control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Guizhou Huacheng Building Technology Co., Ltd. Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Guizhou Huacheng Building Technology Co., Ltd. Document name: Notification of Termination of Patent Right |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070131 Termination date: 20140720 |
|
| EXPY | Termination of patent right or utility model |