CN201885354U - Energy-saving central air-conditioning system - Google Patents
Energy-saving central air-conditioning system Download PDFInfo
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- CN201885354U CN201885354U CN2010206234594U CN201020623459U CN201885354U CN 201885354 U CN201885354 U CN 201885354U CN 2010206234594 U CN2010206234594 U CN 2010206234594U CN 201020623459 U CN201020623459 U CN 201020623459U CN 201885354 U CN201885354 U CN 201885354U
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Abstract
The utility model discloses an energy-saving central air-conditioning system, which comprises a cooling pump, a freezing pump, a compressor, a cooling tower and an air-conditioning terminator. The cooling pump is connected with a cooling pump variable-frequency energy-saving control cabinet; a cooling outlet water temperature sensor and a cooling return water temperature sensor are arranged on a cooling water outlet pipe and a cooling water return pipe respectively; the cooling outlet water temperature sensor and the cooling return water temperature sensor are respectively connected with the cooling pump variable-frequency energy-saving control cabinet; the freezing pump is connected with a freezing pump variable-frequency energy-saving control cabinet; a freezing outlet water temperature sensor and a freezing return water temperature sensor are arranged on a freezing water outlet pipe and a freezing water return pipe respectively; the freezing outlet water temperature sensor and the freezing return water temperature sensor are respectively connected with the freezing pump variable-frequency energy-saving control cabinet; and both the cooling pump variable-frequency energy-saving control cabinet and the freezing pump variable-frequency energy-saving control cabinet adopt a PLC (programmable logic controller) intelligent fuzzy controller and run automatically in a variable-frequency manner according to the temperature differences and the temperatures of freezing and cooling inlet and return water.
Description
One. technical field: the utility model relates to a kind of central air conditioner system, particularly relates to a kind of energy-saving central air conditioner system.
Two. background technology: by design specification, the load capacity of central air conditioner system be by local summer weather conditions the hottest, when winter is the coldest design, multiply by about 1.1 coefficient foundation again as lectotype selection.But in fact system seldom works under these maximum conditions, and according to Zhengzhou DianLi Building record statistics on duty, the time of air-conditioning equipment more than 90% operates in below 70% load, so actual load seldom can reach at full capacity.Under the situation of underload, in order to have guaranteed running status and higher running efficiency preferably, the main frame of cooling and warming can be automatically in the variation load or unload of certain limit according to load, but the water pump that matches with it still moves under full load condition, has so just produced: the big yield, the high hydraulic pressure that there is no need for conveying have expended a large amount of electric energy in vain.
Three. the utility model content:
Technical problem to be solved in the utility model is: overcome the deficiencies in the prior art, provide a kind of reasonable in design, can auto-control and the energy-saving central air conditioner system of good energy-conserving effect.
The technical solution of the utility model is: a kind of energy-saving central air conditioner system, contain coolant pump, refrigerating water pump, compressor, cooling tower and air-conditioning terminal organ, described coolant pump is connected with coolant pump energy-saving and frequency-variable switch board, and, the cooling outlet pipe is respectively arranged with cooling leaving water temperature sensor and cooling backwater temperature sensor with cooling back on the water pipe, described cooling leaving water temperature sensor is connected with described coolant pump energy-saving and frequency-variable switch board respectively with the cooling backwater temperature sensor; Described refrigerating water pump is connected with refrigerating water pump energy-saving and frequency-variable switch board, and, be respectively arranged with freezing leaving water temperature sensor and freezing return water temperature sensor on freezing outlet pipe and the freezing return pipe, described freezing leaving water temperature sensor is connected with described refrigerating water pump energy-saving and frequency-variable switch board respectively with freezing return water temperature sensor.
Described coolant pump energy-saving and frequency-variable switch board and described refrigerating water pump energy-saving and frequency-variable switch board all adopt the PLC intelligent fuzzy controller, carry out the automatic frequency-conversion operation according to the temperature difference freezing, that backwater is advanced in cooling and temperature.
The beneficial effects of the utility model are:
1, the utility model adopts converter technique, and by the unsteady flow amount automatic control system discharge that former configuration is big, high hydraulic pressure lowers, and at the period of cooling and heating load deficiency (temperature, change round the clock), the discharge of unnecessary oepration at full load is reduced to get off, so just will carry the electric energy of this superfluous water flow to save, and can make main frame keep operating in optimum condition automatically, guarantee that central air conditioning water system is when refrigeration/heating demand changes, can follow automatically, dynamic adjustments, can effectively realize the whole energy of system and water pump, can save energy more than 40%.
2, the utility model adopts the PLC intelligent fuzzy controller, carries out the automatic frequency-conversion operation according to the temperature difference freezing, that backwater is advanced in cooling and temperature, when satisfying cold and hot amount demand, realizes power saving rate to greatest extent; Adopt the RS485 Communication Control, can on man-machine interface, show the real-time parameter of motor, as: power of electric motor, electric current, voltage, running frequency, power saving rate, amount of electricity saving etc. come into plain view energy-saving effect.
3, the utlity model has setting and the automatic calculation function of water pump high-speed cruising time, automatically according to current water temperature and environment, behind fuzzy operation, draw the shortest high-speed cruising time of water pump the best, itself and the load of main frame and on-the-spot refrigeration are mated automatically, thereby obtain best power savings.
4, during the utility model refrigerating operaton, the annual saves energy 97200KWH of the coolant pump of the refrigerating water pump of 1 30KW and 1 45KW.During heating operation, the annual saves energy 19440KWH of the heat pump of 1 15KW.The annual amount of electricity saving 116640KWH of accumulative total is worth 78148.8 yuan, according to system service life more than 10 years, about 1,110,000 degree that can economize on electricity at least in useful life economize on electricity and take about 780,000 yuan, economic benefit is obvious.
5, the utility model reasonable in design, can auto-control and good energy-conserving effect, have good economic benefit after the popularization.
Four. description of drawings:
Fig. 1 is the structural representation of energy-saving central air conditioner system.
Five. the specific embodiment:
Embodiment: referring to Fig. 1, among the figure, the 1-coolant pump, 2-coolant pump energy-saving and frequency-variable switch board, 3-refrigerating water pump energy-saving and frequency-variable switch board, 4-cooling leaving water temperature sensor, 5-cools off outlet pipe, 6-cooling backwater temperature sensor, and 7-cools back water pipe, the 8-cooling tower, the freezing return pipe of 9-, 10-room, the freezing leaving water temperature sensor of 11-, the freezing return water temperature sensor of 12-, the freezing outlet pipe of 13-, the 14-refrigerating water pump, the 15-compressor.
Energy-saving central air conditioner system contains coolant pump 1, refrigerating water pump 14, compressor 15, cooling tower 8 and air-conditioning terminal organ, the air-conditioning terminal organ is installed in the room 10, coolant pump 1 is connected with coolant pump energy-saving and frequency-variable switch board 2, and, cooling outlet pipe 5 is respectively arranged with cooling leaving water temperature sensor 4 and cooling backwater temperature sensor 6 with cooling back on the water pipe 7, cooling leaving water temperature sensor 4 is connected with coolant pump energy-saving and frequency-variable switch board 2 respectively with cooling backwater temperature sensor 6; Refrigerating water pump 14 is connected with refrigerating water pump energy-saving and frequency-variable switch board 3, and, be respectively arranged with freezing leaving water temperature sensor 11 and freezing return water temperature sensor 12 on freezing outlet pipe 13 and the freezing return pipe 9, freezing leaving water temperature sensor 11 is connected with refrigerating water pump energy-saving and frequency-variable switch board 3 respectively with freezing return water temperature sensor 12.
Coolant pump energy-saving and frequency-variable switch board 2 and refrigerating water pump energy-saving and frequency-variable switch board 3 all adopt the PLC intelligent fuzzy controller, carry out the automatic frequency-conversion operation according to the temperature difference freezing, that backwater is advanced in cooling and temperature.
(1) refrigerating water pump 14 carries out the principle of converting operation:
The PLC intelligent fuzzy controller reads in internal memory by thermal module and temperature sensor with the return water temperature and the leaving water temperature of refrigerating water pump, and calculate temperature approach, carry out fuzzy operation according to the backwater of refrigerating water pump and the temperature approach and the temperature of water outlet then, control the rotating speed of frequency converter, regulate the flow of water outlet, the speed of control heat exchange; The temperature difference is big, and the indoor temperature height is described, should improve the rotating speed of refrigerating water pump, accelerates the circulation rate and the flow of chilled water, accelerates the speed of heat exchange; Otherwise have a narrow range of temperature, illustrate that then indoor temperature is low, can reduce the rotating speed of refrigerating water pump, slow down the circulation rate and the flow of chilled water, the speed of slowing down heat exchange is with saves energy; The startup of frequency converter, stop, the change of running frequency and monitoring display data such as power converter output, frequency converter output frequency, output current, output voltages etc. are all realized by 485 communication protocols by the PLC intelligent fuzzy controller, and system can carry out the calculating of refrigerating water pump (coolant pump) power saving rate automatically.
(2) coolant pump 1 carries out the principle of converting operation:
Owing to when freezing unit carries out heat exchange, when making the water temperature cooling, will discharge a large amount of heats, this heat absorbs by cooling water, and cooling water temperature is raise, and coolant pump will rise warm cooling water and be pressed into cooling tower, after the cooling processing of lowering the temperature, send freezing unit again back to.Therefore, concerning coolant pump, as the control foundation, realize the constant difference control between water inlet and backwater with the temperature difference between water inlet and backwater.The temperature difference is big, illustrates that the heat of freezing unit generation is big, should improve the rotating speed of coolant pump, strengthens the circulation rate of cooling water; Have a narrow range of temperature, illustrate that the heat of freezing unit generation is little, can reduce the rotating speed of coolant pump, the circulation rate of slowing down coolant pump is with saves energy.
Claims (2)
1. energy-saving central air conditioner system, contain coolant pump, refrigerating water pump, compressor, cooling tower and air-conditioning terminal organ, it is characterized in that: described coolant pump is connected with coolant pump energy-saving and frequency-variable switch board, and, the cooling outlet pipe is respectively arranged with cooling leaving water temperature sensor and cooling backwater temperature sensor with cooling back on the water pipe, described cooling leaving water temperature sensor is connected with described coolant pump energy-saving and frequency-variable switch board respectively with the cooling backwater temperature sensor; Described refrigerating water pump is connected with refrigerating water pump energy-saving and frequency-variable switch board, and, be respectively arranged with freezing leaving water temperature sensor and freezing return water temperature sensor on freezing outlet pipe and the freezing return pipe, described freezing leaving water temperature sensor is connected with described refrigerating water pump energy-saving and frequency-variable switch board respectively with freezing return water temperature sensor.
2. energy-saving central air conditioner system according to claim 1, it is characterized in that: described coolant pump energy-saving and frequency-variable switch board and described refrigerating water pump energy-saving and frequency-variable switch board all adopt the PLC intelligent fuzzy controller, carry out the automatic frequency-conversion operation according to the temperature difference freezing, that backwater is advanced in cooling and temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206234594U CN201885354U (en) | 2010-11-25 | 2010-11-25 | Energy-saving central air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206234594U CN201885354U (en) | 2010-11-25 | 2010-11-25 | Energy-saving central air-conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201885354U true CN201885354U (en) | 2011-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206234594U Expired - Fee Related CN201885354U (en) | 2010-11-25 | 2010-11-25 | Energy-saving central air-conditioning system |
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| Country | Link |
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| CN (1) | CN201885354U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353124A (en) * | 2011-08-31 | 2012-02-15 | 广州市设计院 | Method for controlling heat-humidity ratio of air conditioning system and fixed heat-humidity ratio type surface cooler |
| CN103438550A (en) * | 2013-08-16 | 2013-12-11 | 西安清源中央空调技术服务有限责任公司 | Automatic control energy-saving cooling system of central air conditioner |
| CN104729009A (en) * | 2013-12-24 | 2015-06-24 | 珠海格力电器股份有限公司 | Air-conditioner control method and device |
| CN106672470A (en) * | 2016-10-17 | 2017-05-17 | 广汉市思科信达科技有限公司 | Oil storage tank cooling system |
| CN107328059A (en) * | 2017-05-27 | 2017-11-07 | 四川建源节能科技有限公司 | A kind of temperature frequency conversion energy-saving system of Intelligent fresh air ventilator |
| CN107401806A (en) * | 2017-06-22 | 2017-11-28 | 广州地铁集团有限公司 | Main frame and refrigerating water pump comprehensive energy efficiency lifting control method in central air conditioning freezing station |
| CN113915719A (en) * | 2021-04-29 | 2022-01-11 | 高格立节能科技(海南)有限公司 | Real-time frequency conversion control method and controller for central air-conditioning water pump |
-
2010
- 2010-11-25 CN CN2010206234594U patent/CN201885354U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353124A (en) * | 2011-08-31 | 2012-02-15 | 广州市设计院 | Method for controlling heat-humidity ratio of air conditioning system and fixed heat-humidity ratio type surface cooler |
| CN102353124B (en) * | 2011-08-31 | 2015-03-18 | 广州市设计院 | Method for controlling heat-humidity ratio of air conditioning system and fixed heat-humidity ratio type surface cooler |
| CN103438550A (en) * | 2013-08-16 | 2013-12-11 | 西安清源中央空调技术服务有限责任公司 | Automatic control energy-saving cooling system of central air conditioner |
| CN103438550B (en) * | 2013-08-16 | 2015-12-23 | 西安清源中央空调技术服务有限责任公司 | A kind of auto-control energy-saving cooling system of central air-conditioning |
| CN104729009A (en) * | 2013-12-24 | 2015-06-24 | 珠海格力电器股份有限公司 | Air-conditioner control method and device |
| CN104729009B (en) * | 2013-12-24 | 2017-06-30 | 珠海格力电器股份有限公司 | Air conditioning control method and device |
| CN106672470A (en) * | 2016-10-17 | 2017-05-17 | 广汉市思科信达科技有限公司 | Oil storage tank cooling system |
| CN107328059A (en) * | 2017-05-27 | 2017-11-07 | 四川建源节能科技有限公司 | A kind of temperature frequency conversion energy-saving system of Intelligent fresh air ventilator |
| CN107401806A (en) * | 2017-06-22 | 2017-11-28 | 广州地铁集团有限公司 | Main frame and refrigerating water pump comprehensive energy efficiency lifting control method in central air conditioning freezing station |
| CN107401806B (en) * | 2017-06-22 | 2020-01-21 | 广州地铁集团有限公司 | Method for improving and controlling comprehensive energy efficiency of main engine and refrigerating pump in central air-conditioning refrigerating station |
| CN113915719A (en) * | 2021-04-29 | 2022-01-11 | 高格立节能科技(海南)有限公司 | Real-time frequency conversion control method and controller for central air-conditioning water pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110629 Termination date: 20131125 |