CN200968689Y - Energy-saving control system of central air-conditioning - Google Patents
Energy-saving control system of central air-conditioning Download PDFInfo
- Publication number
- CN200968689Y CN200968689Y CN 200620052820 CN200620052820U CN200968689Y CN 200968689 Y CN200968689 Y CN 200968689Y CN 200620052820 CN200620052820 CN 200620052820 CN 200620052820 U CN200620052820 U CN 200620052820U CN 200968689 Y CN200968689 Y CN 200968689Y
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- cooling water
- central air
- temperature sensor
- air conditioner
- chilled water
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Abstract
The utility model discloses an energy-saving control system for central air conditioner, which comprises a main machine of the central air conditioner, a freezing water subsystem connected with the main machine of the central air conditioner, and a cooling water subsystem. The pipeline of the freezing water subsystem and the cooling water subsystem are respectively provided with a freezing water inlet temperature sensor, a freezing water outlet temperature sensor, a cooling water inlet temperature sensor and a cooling water outlet temperature sensor, the control on the freezing water pump unit, cooling water pump unit and fan are conducted through real-time signal collected by the sensors. The utility model is an energy-saving control system for central air conditioner, which is capable of utilizing a plurality of parameters to regulate flow of liquid and air and further saving energy of motor of the central air conditioner, improving efficiency of main machine, lowering down cost, and ensuring stable operation of the complete central air conditioner.
Description
Technical field
The present invention is mainly concerned with the energy-saving design field of central air-conditioning, refers in particular to a kind of central air-conditioning energy control system.
Background technology
The Energy Saving Control of existing central air conditioner system water pump is to adopt single parameter such as temperature or pressure or temperature as control signal on controlled water pump mostly, regulates frequency converter frequency, and the control pump rotary speed changes and carries fluid flow, to reach energy-conservation purpose.The energy-conservation amplitude of this kind control method is limited.So the technology that adopts many reference amounts that central air conditioner system is controlled occurred, but these implementations are at all using programmable controller etc. that direct control frequency converter is controlled or used to frequency converter in each controlled device, also need expensive central authorities' control equipment, cost is higher, is difficult for applying.
The utility model content
The technical problems to be solved in the utility model just is: the technical problem that exists at prior art, thus the utility model provides a kind of motor power that can utilize a plurality of parameters regulation and control fluids and air mass flow to save central air-conditioning, improves main frame efficient, reduces cost, guarantees the central air-conditioning energy control system of central air-conditioning complete machine stable operation.
For solving the problems of the technologies described above, the solution that the utility model proposes is: a kind of central air-conditioning energy control system, chilled water subsystem and cooling water subsystem that it comprises central air conditioner main machine and links to each other with central air conditioner main machine, described chilled water subsystem comprises chilled water pump group and the diversion box and the header tank that link to each other with the chilled water pump group, described cooling water subsystem comprises cooling water pump group and the cooling tower and the blower fan that link to each other with cooling water pump group water inlet, it is characterized in that: the chilled water water inlet pipe between described chilled water pump group and the central air conditioner main machine is provided with the chilled water inlet temperature sensor, the chilled water outlet pipe of central air conditioner main machine is provided with the chilled water outlet temperature sensor, the chilled water inlet temperature sensor links to each other with the input of signal processor with the chilled water outlet temperature sensor, the output of signal processor links to each other with first signal gathering unit, links to each other with the chilled water pump group by first frequency converter and it is controlled; Cooling water inlet pipe between described cooling water pump group and the central air conditioner main machine is provided with the cooling water inlet temperature sensor, the cooling water outlet pipe of central air conditioner main machine is provided with the cooling water outlet temperature sensor, the cooling water inlet temperature sensor links to each other with the input of the 3rd signal gathering unit, the output of the 3rd signal gathering unit links to each other with blower fan and it is controlled through the 3rd frequency converter, the cooling water outlet temperature sensor links to each other with the input of secondary signal collecting unit, and the output of secondary signal collecting unit links to each other with the cooling water pump group and it is controlled through second frequency converter.
Be equipped with comparison circuit unit, PI proportional integral circuit unit and frequency changer circuit unit in described first frequency converter, second frequency converter and the 3rd frequency converter.
Compared with prior art, advantage of the present utility model just is:
1, the utility model central air-conditioning energy control system is simple and compact for structure, with low cost, automaticity is high, installation and maintenance are convenient, can directly on existing structure, improve, it is applied widely, be easy to apply, can save simultaneously central air-conditioning motor power, improve main frame efficient, reduce cost, guarantee the stable operation of central air-conditioning complete machine;
2, the utility model central air-conditioning energy control system, respectively in the cooling water of central air conditioner main machine and advancing of chilled water, be equiped with temperature sensor on the outlet pipe, gather cooling water, chilled water is in the real time temperature information at water inlet and delivery port place, send signal to signal processor or frequency converter through signal gathering unit then, by the comparison circuit unit in the frequency converter, PI proportional integral circuit unit and frequency changer circuit unit are analyzed this signal, handle, pass through frequency converter then directly to blower fan, the cooling water pump group, the chilled water pump group is controlled in real time, the energy that each subsystem is carried can be regulated with the demand of user side in real time, to save motor power, reduced the positive energy exchange that enters central air conditioner main machine evaporimeter and condenser simultaneously, central air conditioner main machine operation unloading amplitude is increased, improved main frame efficient.
Description of drawings
Fig. 1 is a frame structure schematic diagram of the present utility model.
Marginal data
1, central air conditioner main machine 2, diversion box
3, header tank 4, chilled water pump group
5, cooling tower 6, blower fan
7, cooling water pump group 8, cooling water inlet temperature sensor
9, chilled water outlet temperature sensor 10, first signal gathering unit
11, signal processor 12, first frequency converter
13, cooling water inlet temperature sensor 14, cooling water outlet temperature sensor
15, secondary signal collecting unit 16, second frequency converter
17, the 3rd signal gathering unit 18, the 3rd frequency converter
19, cooling water inlet pipe 20, cooling water outlet pipe
21, chilled water water inlet pipe 22, chilled water outlet pipe
The specific embodiment
Below with reference to the drawings and specific embodiments the utility model is described in further details.
As shown in Figure 1, the utility model central air-conditioning energy control system, it comprises central air conditioner main machine 1 and chilled water subsystem that links to each other with central air conditioner main machine 1 and cooling water subsystem, the chilled water subsystem comprises chilled water pump group 4 and diversion box 2 that links to each other with chilled water pump group 4 and header tank 3, the cooling water subsystem comprises cooling water pump group 7 and the cooling tower 5 and the blower fan 6 that link to each other with cooling water pump group 7 water inlets, chilled water water inlet pipe 21 between chilled water pump group 4 and the central air conditioner main machine 1 is provided with chilled water inlet temperature sensor 8, the chilled water outlet pipe 22 of central air conditioner main machine 1 is provided with chilled water outlet temperature sensor 9, chilled water inlet temperature sensor 8 links to each other with the input of chilled water outlet temperature sensor 9 with signal processor 11, the output of signal processor 11 links to each other with first signal gathering unit 10, links to each other with chilled water pump group 4 by first frequency converter 12 and it is controlled; Wherein, this chilled water inlet temperature sensor 8 and chilled water outlet temperature sensor 9 are connected to signal processor 10 by signal cable, be connected to first signal gathering unit 11 by signal cable again, the output of this first signal gathering unit 11 is connected to first frequency converter 12 by signal cable, and this first frequency converter 12 is connected with chilled water pump group 4 by threephase cable.Cooling water inlet pipe 19 between cooling water pump group 7 and the central air conditioner main machine 1 is provided with cooling water inlet temperature sensor 13, the cooling water outlet pipe 20 of central air conditioner main machine 1 is provided with cooling water outlet temperature sensor 20, cooling water inlet temperature sensor 13 connects by signal cable and links to each other with the input of the 3rd signal gathering unit 17, the output of the 3rd signal gathering unit 17 links to each other with blower fan 6 and it is controlled through the 3rd frequency converter 18, the 3rd frequency converter 18 links to each other with blower fan 6 by threephase cable, cooling water outlet temperature sensor 20 links to each other by the input of signal cable with secondary signal collecting unit 15, and the output of secondary signal collecting unit 15 links to each other with cooling water pump group 7 and it is controlled through second frequency converter 16.Wherein, the chilled water outlet pipe 22 of central air conditioner main machine 1 is connected with each user side through the diversion box 2 of chilled water subsystem, the chilled water that returns from user side is after header tank 3 enters chilled water pump group 4, be connected with chilled water water inlet pipe 21 between the central air conditioner main machine 1 through chilled water pump group 4, form the chilled water closed cycle.The cooling water outlet pipe 20 of central air conditioner main machine 1 is connected through the cooling tower 5 of cooling water subsystem, cooling tower 5 is connected with cooling water pump group 7 through cooling water pipe, this cooling water pump group 7 is connected with the cooling water inlet pipe 19 of central air conditioner main machine 1, forms the cooling water closed cycle.In the present embodiment, be equipped with comparison circuit unit, PI proportional integral circuit unit and frequency changer circuit unit in first frequency converter 12, second frequency converter 16 and the 3rd frequency converter 18.Dc source links to each other with the power end of each temperature sensor, signal processor 10, signal acquisition module and frequency converter respectively by cable.
Operation principle: in the chilled water subsystem of the present utility model setting signal imported the comparison circuit in first frequency converter 12, generally with chilled water import and outlet temperature difference be 4～6 ℃ as setting signal, the signal of chilled water inlet temperature sensor 8 and chilled water outlet temperature sensor 9 is sent into signal processor 10, the comparator of signal through first signal gathering unit 11 is sent into first frequency converter 12 as error feedback signal in of these signal processor 10 outputs compares, and through the proportional integral circuit computing, the result sends into the frequency changer circuit in first frequency converter 12, mutagenic frequency, promptly send into chilled water pump group 4 and regulate its running frequency, control chilled water subsystem flow by threephase cable.
In the cooling water subsystem of the present utility model, cooling water is set to 30～32 ℃ according to the general inflow temperature of system requirements, and leaving water temperature is set to 34～37 ℃.34～37 ℃ of setting signals are imported comparison circuit in second frequency converter 16, the comparison circuit of the signal of cooling water outlet temperature sensor 14 through secondary signal collecting unit 15 is sent into second frequency converter 16 as error feedback signal in compares, and through the proportional integral circuit computing, the result sends into the frequency changer circuit in second frequency converter 16, mutagenic frequency, send into cooling water pump group 7 by threephase cable again and regulate its running frequency, control cooling water subsystem flow.30～32 ℃ of setting signals are imported comparison circuit in the 3rd frequency converter 18, the comparison circuit of the signal of cooling water inlet temperature sensor 13 through the 3rd signal gathering unit 17 is sent into the 3rd frequency converter 18 as error feedback signal in compares, and through relatively integrating circuit computing, the result sends into the frequency changer circuit in the 3rd frequency converter 18, mutagenic frequency, send into blower fan 6 by threephase cable again and regulate its running frequency, regulate cooling tower 5 cooling air quantities.
When central air-conditioner host 1 was used to heat, the chilled water subsystem was the warm water subsystem, and situation was identical when its control situation was freezed with central air conditioner main machine 1, did not repeat them here.
Claims (2)
1, a kind of central air-conditioning energy control system, it comprises central air conditioner main machine (1) and the chilled water subsystem and the cooling water subsystem that link to each other with central air conditioner main machine (1), described chilled water subsystem comprises chilled water pump group (4) and diversion box (2) that links to each other with chilled water pump group (4) and header tank (3), described cooling water subsystem comprises cooling water pump group (7) and the cooling tower (5) and the blower fan (6) that link to each other with cooling water pump group (7) water inlet, it is characterized in that: the chilled water water inlet pipe (21) between described chilled water pump group (4) and the central air conditioner main machine (1) is provided with chilled water inlet temperature sensor (8), the chilled water outlet pipe (22) of central air conditioner main machine (1) is provided with chilled water outlet temperature sensor (9), chilled water inlet temperature sensor (8) links to each other with the input of chilled water outlet temperature sensor (9) with signal processor (11), the output of signal processor (11) links to each other with first signal gathering unit (10), links to each other with chilled water pump group (4) by first frequency converter (12) and it is controlled; Cooling water inlet pipe (19) between described cooling water pump group (7) and the central air conditioner main machine (1) is provided with cooling water inlet temperature sensor (13), the cooling water outlet pipe (20) of central air conditioner main machine (1) is provided with cooling water outlet temperature sensor (20), cooling water inlet temperature sensor (13) links to each other with the input of the 3rd signal gathering unit (17), the output of the 3rd signal gathering unit (17) links to each other with blower fan (6) and it is controlled through the 3rd frequency converter (18), cooling water outlet temperature sensor (20) links to each other with the input of secondary signal collecting unit (15), and the output of secondary signal collecting unit (15) links to each other with cooling water pump group (7) and it is controlled through second frequency converter (16).
2, central air-conditioning energy control system according to claim 1 is characterized in that: be equipped with comparison circuit unit, PI proportional integral circuit unit and frequency changer circuit unit in described first frequency converter (12), second frequency converter (16) and the 3rd frequency converter (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620052820 CN200968689Y (en) | 2006-11-13 | 2006-11-13 | Energy-saving control system of central air-conditioning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620052820 CN200968689Y (en) | 2006-11-13 | 2006-11-13 | Energy-saving control system of central air-conditioning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200968689Y true CN200968689Y (en) | 2007-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200620052820 Expired - Fee Related CN200968689Y (en) | 2006-11-13 | 2006-11-13 | Energy-saving control system of central air-conditioning |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101825326A (en) * | 2010-04-30 | 2010-09-08 | 河海大学常州校区 | Fuzzy adaptive central air-conditioning cooling water energy-saving control system and fuzzy adaptive method thereof |
| CN102022799A (en) * | 2009-09-19 | 2011-04-20 | 袁恒杰 | Energy-saving control method for central air conditioner system |
| CN102338441A (en) * | 2010-07-27 | 2012-02-01 | 中华电信股份有限公司 | Method for regulating and controlling freezing ability of fixed-frequency freezing air-conditioning ice-water system |
| TWI405939B (en) * | 2010-06-30 | 2013-08-21 | Chunghwa Telecom Co Ltd | Method for controlling freezing ability of a fixed-frequency freezing ac ice-water system |
| CN104864573A (en) * | 2015-06-18 | 2015-08-26 | 北京百度网讯科技有限公司 | Heating and ventilation self-control system for data center |
| CN109945433A (en) * | 2019-03-20 | 2019-06-28 | 珠海格力电器股份有限公司 | Temprature control method and air-conditioning |
| CN110375415A (en) * | 2019-06-25 | 2019-10-25 | 上海华船资产管理有限公司 | The frequency-changing control system of central air-conditioning |
-
2006
- 2006-11-13 CN CN 200620052820 patent/CN200968689Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022799A (en) * | 2009-09-19 | 2011-04-20 | 袁恒杰 | Energy-saving control method for central air conditioner system |
| CN102022799B (en) * | 2009-09-19 | 2014-03-26 | 袁恒杰 | Energy-saving control method for central air conditioner system |
| CN101825326A (en) * | 2010-04-30 | 2010-09-08 | 河海大学常州校区 | Fuzzy adaptive central air-conditioning cooling water energy-saving control system and fuzzy adaptive method thereof |
| TWI405939B (en) * | 2010-06-30 | 2013-08-21 | Chunghwa Telecom Co Ltd | Method for controlling freezing ability of a fixed-frequency freezing ac ice-water system |
| CN102338441A (en) * | 2010-07-27 | 2012-02-01 | 中华电信股份有限公司 | Method for regulating and controlling freezing ability of fixed-frequency freezing air-conditioning ice-water system |
| CN102338441B (en) * | 2010-07-27 | 2013-09-18 | 中华电信股份有限公司 | Method for regulating and controlling freezing ability of fixed-frequency freezing air-conditioning ice-water system |
| CN104864573A (en) * | 2015-06-18 | 2015-08-26 | 北京百度网讯科技有限公司 | Heating and ventilation self-control system for data center |
| CN109945433A (en) * | 2019-03-20 | 2019-06-28 | 珠海格力电器股份有限公司 | Temprature control method and air-conditioning |
| CN110375415A (en) * | 2019-06-25 | 2019-10-25 | 上海华船资产管理有限公司 | The frequency-changing control system of central air-conditioning |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hunan three run nanometer material industry Co., Ltd. Assignor: Changsha Yineng Electronic Technology Co., Ltd. Contract fulfillment period: 2008.5.13 to 2016.11.12 Contract record no.: 2009430000147 Denomination of utility model: Integrated control method of energy-saving control system for central air conditioning and its sensor module Granted publication date: 20071031 License type: Exclusive license Record date: 20091027 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.5.13 TO 2016.11.12; CHANGE OF CONTRACT Name of requester: HUNAN PROVINCE SANRUN NANO MATERIAL INDUSTRY CO., Effective date: 20091027 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071031 Termination date: 20091214 |