CN200950221Y - Energy saver for central air-conditioning - Google Patents
Energy saver for central air-conditioning Download PDFInfo
- Publication number
- CN200950221Y CN200950221Y CN 200620076176 CN200620076176U CN200950221Y CN 200950221 Y CN200950221 Y CN 200950221Y CN 200620076176 CN200620076176 CN 200620076176 CN 200620076176 U CN200620076176 U CN 200620076176U CN 200950221 Y CN200950221 Y CN 200950221Y
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- CN
- China
- Prior art keywords
- chilled water
- cooling
- central air
- temperature sensor
- frequency converter
- 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
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Abstract
The utility model relates to a central air-condition energy-saving device. In the system, chilled water temperature entrance and exit sensors (8, 9) are positioned on the piping of the chilled water subsystem, a cooling water entrance temperature sensor(13)and a cooling water exit temperature sensor(4)are positioned on the piping of the cooling water subsystem. The sensors(8,9,13,14)are connected respectively with each transducer(12,16,18)of the relevant water pump electric motors through the corresponding signal mining module(11,15,17)and a single chip processor(10). The transducers(12,16,18)control respectively the electric motors of a chiller water system(4), a cooling water system(7)and a cooling tower fan(6).The utility model regulates and controls the amount of the pumped liquid and the amount of air flow by a plurality of parameters, saves the energy of the electric motor, optimizes the operating environment of the mainframe, improves the operating efficiency of the mainframe, has a moderate cost and is easy to implement.
Description
Technical field
The utility model relates to central air conditioner, particularly a kind of central air-conditioning energy device.
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 of conversion device 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 purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, a kind of central air-conditioning energy device is provided, to realize utilizing a plurality of parameter regulation and control to carry liquid and air mass flow, save motor power, improve main frame efficient, reduce cost to reach, guarantee central air conditioning equipment stable operation, convenient enforcement.
For achieving the above object, the utility model provides a kind of central air-conditioning energy device, comprises central air conditioner main machine, chilled water subsystem and chilled water subsystem.Wherein the chilled water subsystem is provided with diversion box, header tank and chilled water pump group, and the chilled water subsystem is provided with cooling tower, blower fan of cooling tower and cooling-water pump group.The chilled water outlet water pipe of described central air conditioner main machine is connected with each user side through diversion box, the chilled water pipe that returns from user side is connected with the chilled water pump group through header tank, this chilled water pump group is connected with the chilled water return pipe of central air conditioner main machine, forms the chilled water closed cycle.The coolant outlet water pipe of described central air conditioner main machine is connected with cooling tower, and cooling tower is connected with the cooling-water pump group through cooling water pipe, and this cooling-water pump group is connected with the cooling water inlet water pipe of central air conditioner main machine, forms the chilled water closed cycle.This central air-conditioning energy apparatus features is:
The chilled water import and export water pipe of described central air conditioner main machine is respectively equipped with chilled water inlet temperature sensor, chilled water outlet temperature sensor, and chilled water import and export water pipe is respectively equipped with cooling water inlet temperature sensor, cooling water outlet temperature sensor; Wherein
Described chilled water import and export temperature sensor connects first frequency converter through signal acquisition module, and this frequency converter is connected with the chilled water pump group by threephase cable;
Described cooling water outlet temperature sensor connects second frequency converter through the secondary signal acquisition module, and this frequency converter is connected with the cooling-water pump group by threephase cable;
Described cooling water inlet temperature sensor connects the 3rd frequency converter through the 3rd signal acquisition module, and this frequency converter is connected with blower fan of cooling tower by threephase cable;
Direct supply links to each other with the power end of each temperature sensor, signal acquisition module, single-chip microcomputer and frequency converter respectively.
Described each frequency converter is provided with comparator circuit, PI proportional integral circuit and frequency changer circuit.
The utility model is by mounting temperature sensor on pipeline, by signal acquisition module, single-chip microcomputer is handled signal, again through the comparator circuit of frequency converter, the proportional integral circuit, frequency converter is controlled respectively the pump of chilled water system and the pump and the blower fan of cooling water system, thereby realize utilizing a plurality of parameters such as the out temperature of chilled water subsystem and chilled water subsystem out temperature, regulation and control chilled water subsystem, the liquid and the air mass flow of chilled water subsystem and blower fan of cooling tower heat radiation supply air system, make energy that each subsystem carries can be with the demand of user side real-time regulated, to save motor power, reduced the positive energy exchange that enters central air conditioner main machine evaporator and condenser simultaneously, central air conditioner main machine operation unloading amplitude is increased, improved main frame efficient.The utility model adopts the supporting use of simple signal acquisition module, single-chip microcomputer and frequency converter in addition, control circuit is simple, cost is lower than each frequency converter and all uses programmable controller and use cost relatively expensive, and fractional energy savings improves greatly, is easy to apply.
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
Description of drawings
Fig. 1 is a connection state synoptic diagram of the present utility model.
Embodiment
As shown in Figure 1, the utility model central air-conditioning energy device comprises central air conditioner main machine 1, chilled water subsystem and chilled water subsystem.Wherein the chilled water subsystem is provided with diversion box 2, header tank 3 and chilled water pump group 4, and the chilled water subsystem is provided with cooling tower 5, blower fan of cooling tower 6 and cooling-water pump group 7.The chilled water outlet water pipe 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 pipe that returns from user side is connected with chilled water pump group 4 through header tank 3, this chilled water pump group 4 is connected with the chilled water return pipe of central air conditioner main machine 1, forms the chilled water closed cycle.The coolant outlet water pipe of central air conditioner main machine 1 is connected through the cooling tower 5 of chilled 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 water pipe of central air conditioner main machine 1, forms the chilled water closed cycle.
The chilled water import and export water pipe of central air conditioner main machine 1 is respectively equipped with chilled water inlet temperature sensor 8, chilled water outlet temperature sensor 9.This chilled water import and export temperature sensor 8,9 is connected to single-chip microcomputer 10 by signal cable, be connected to first signal acquisition module 11 by signal cable again, these signal acquisition module 11 output terminals are connected to first frequency converter 12 by signal cable, and this frequency converter 12 is connected with chilled water pump group 4 by threephase cable.
The chilled water import and export water pipe of central air conditioner main machine 1 is respectively equipped with cooling water inlet temperature sensor 13, cooling water outlet temperature sensor 14.This cooling water outlet temperature sensor 14 is connected to secondary signal acquisition module 15 by signal cable, and these signal acquisition module 15 output terminals are connected to second frequency converter 16 by signal cable, and this frequency converter 16 is connected with cooling-water pump group 7 by threephase cable.Cooling water inlet temperature sensor 13 is connected to the 3rd signal acquisition module 17 by signal cable, and these signal acquisition module 17 output terminals are connected to the 3rd frequency converter 18 by signal cable, and this frequency converter 18 is connected with blower fan of cooling tower 6 by threephase cable.
Described each frequency converter is provided with comparator circuit, PI proportional integral circuit and frequency changer circuit.Direct supply links to each other with the power end of each temperature sensor, single-chip microcomputer, signal acquisition module and frequency converter respectively by cable.
In the chilled water subsystem of central air-conditioning energy device, setting signal is imported comparator circuit in first frequency converter 12, generally with chilled water import and outlet temperature difference be 4～6 ℃ as setting signal, chilled water advances, outlet temperature sensor 8,9 signal is sent into single-chip microcomputer 10, the comparer of signal through first signal acquisition module 11 is sent into first frequency converter 12 as error feedback signal in of these single-chip microcomputer 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 chilled water subsystem of central air-conditioning energy device, chilled 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 comparator circuit in second frequency converter 16, the comparator circuit of the signal of cooling water outlet temperature sensor 14 through secondary signal acquisition module 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 chilled water subsystem flow.30～32 ℃ of setting signals are imported comparator circuit in the 3rd frequency converter 18, the comparator circuit of the signal of cooling water inlet temperature sensor 13 through the 3rd signal acquisition module 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 of cooling tower 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.
Claims (2)
1, a kind of central air-conditioning energy device, comprise central air conditioner main machine (1), chilled water subsystem and chilled water subsystem, wherein the chilled water subsystem is provided with diversion box (2), header tank (3) and chilled water pump group (4), and the chilled water subsystem is provided with cooling tower (5), blower fan of cooling tower (6) and cooling-water pump group (7); The chilled water outlet water pipe of described central air conditioner main machine (1) is connected with each user side through diversion box (2), the chilled water pipe that returns from user side is connected with chilled water pump group (4) through header tank (3), and this chilled water pump group (4) is connected with the chilled water return pipe of central air conditioner main machine (1); The coolant outlet water pipe of described central air conditioner main machine (1) is connected with cooling tower (5), and cooling tower (5) is connected with cooling-water pump group (7) through cooling water pipe, and this cooling-water pump group (7) is connected with the cooling water inlet water pipe of central air conditioner main machine (1); It is characterized in that:
The chilled water import and export water pipe of described central air conditioner main machine (1) is respectively equipped with chilled water inlet temperature sensor (8), chilled water outlet temperature sensor (9), and chilled water import and export water pipe is respectively equipped with cooling water inlet temperature sensor (13), cooling water outlet temperature sensor (14); Wherein said chilled water inlet temperature sensor (8), chilled water outlet temperature sensor (9) connect first frequency converter (12) through signal acquisition module (11), single-chip microcomputer (10), and this frequency converter (12) is connected with chilled water pump group (4) by threephase cable;
Described cooling water outlet temperature sensor (14) connects second frequency converter (16) through secondary signal acquisition module (15), and this frequency converter (16) is connected with cooling-water pump group (7) by threephase cable;
Described cooling water inlet temperature sensor (13) connects the 3rd frequency converter (18) through the 3rd signal acquisition module (17), and this frequency converter (18) is connected with blower fan of cooling tower (6) by threephase cable.
2, a kind of central air-conditioning energy device according to claim 1 is characterized in that described frequency converter (12,16,18) is respectively equipped with comparator circuit, PI proportional integral circuit and frequency changer circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620076176 CN200950221Y (en) | 2006-08-02 | 2006-08-02 | Energy saver for central air-conditioning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620076176 CN200950221Y (en) | 2006-08-02 | 2006-08-02 | Energy saver for central air-conditioning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200950221Y true CN200950221Y (en) | 2007-09-19 |
Family
ID=38892763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620076176 Expired - Fee Related CN200950221Y (en) | 2006-08-02 | 2006-08-02 | Energy saver for central air-conditioning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200950221Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106369772A (en) * | 2016-11-07 | 2017-02-01 | 深圳市奥宇节能技术股份有限公司 | Safety protection method for variable-flow operation of central air conditioner cooling water system |
-
2006
- 2006-08-02 CN CN 200620076176 patent/CN200950221Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106369772A (en) * | 2016-11-07 | 2017-02-01 | 深圳市奥宇节能技术股份有限公司 | Safety protection method for variable-flow operation of central air conditioner cooling water system |
| CN106369772B (en) * | 2016-11-07 | 2019-06-18 | 深圳市奥宇节能技术股份有限公司 | A kind of method for security protection of central air conditioning cooling water system variable-flow operation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |