CN201652715U - Central air-conditioning energy-saving control system based on bus communication - Google Patents
Central air-conditioning energy-saving control system based on bus communication Download PDFInfo
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- CN201652715U CN201652715U CN2010201814023U CN201020181402U CN201652715U CN 201652715 U CN201652715 U CN 201652715U CN 2010201814023 U CN2010201814023 U CN 2010201814023U CN 201020181402 U CN201020181402 U CN 201020181402U CN 201652715 U CN201652715 U CN 201652715U
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- central air
- control system
- bus communication
- condenser
- water outlet
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Abstract
The utility model relates to a central air-conditioning energy-saving control system based on bus communication which includes a central air-conditioning system, a remote control end and a field control system; the central air-conditioning system includes a cooling tower, a condenser, an evaporator and the tail end of the air conditioning; the remote control end includes a bus communication module and an industrial personal computer; the field control system includes a plurality of transducers and AD modules; two cooling pipelines are arranged between the cooling tower and the condenser; two one-way pipelines are arranged between the condenser and the evaporator; and the directions of the pipelines are from the evaporator to the condenser. The central air-conditioning energy-saving control system based on bus communication has the beneficial effects of simple construction, cost saving and convenient maintenance; and the bus adopts digital communication, which effectively overcomes the defect that an analog signal is easy to be interfered and generates errors. The central air-conditioning energy-saving control system based on bus communication can detect more parameters of the transducers like input and output frequencies, working temperature, input and output voltages, input and output currents, etc., and clearly knows the working state of electronic apparatuses.
Description
Technical field
The utility model relates to a kind of central air-conditioning energy control system, relates in particular to a kind of central air-conditioning energy control system based on bus communication.
Background technology
At present, existing 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, be provided with temperature sensor at chilled water import, chilled water outlet, cooling water inlet coolant outlet respectively on the pipeline of chilled water subsystem and cooling water subsystem, the live signal that collects by sensor carries out computing through PLC or industrial computer, export control signal control frequency converter then, thereby chilled water pump group, cooling water pump group and blower fan are carried out variable frequency regulating speed control.But input signal and output signal directly adopt the holding wire transmission, and a signal just needs a holding wire, causes circuit more and complicated, and difficulty of construction increases, and makes troubles for daily maintenance and maintenance.And the analog signals of input is subjected to the electromagnetic interference of external environment easily, influences the normal operation of system, and the control that makes mistake is done by the serious system that also can cause.
The utility model content
The purpose of this utility model provides a kind of central air-conditioning energy control system based on bus communication, to overcome the deficiency of above-mentioned existing central air-conditioning energy control system.
The purpose of this utility model is to be achieved through the following technical solutions: a kind of central air-conditioning energy control system based on bus communication, comprise central air conditioner system, remote control terminal and field control system, described central air conditioner system comprises cooling tower, condenser, evaporimeter and air conditioning terminal, described remote control terminal comprises bus communication module and industrial computer, and described field control system comprises some frequency converters and AD module; Two cooling pipes are arranged between described cooling tower and the condenser, the pipeline that wherein is provided with coolant pump is the cooling water oral siphon, another pipeline is a cooling water outlet pipe, described cooling water oral siphon is provided with the cooling water water inlet and is provided with temperature sensor at the water inlet end, and described cooling water outlet pipe is provided with cooling water outlet and is provided with another temperature sensor at water outlet end; Two one-way pipelines are arranged between described condenser and the evaporimeter, duct orientation be from evaporimeter to the condenser direction, be respectively equipped with expansion valve and compressor on described two pipelines; Two freezing pipelines are arranged between described evaporimeter and the air conditioning terminal, the pipeline that wherein is provided with refrigerating water pump is the chilled water oral siphon, another pipeline is the chilled water outlet pipe, described chilled water oral siphon is provided with the chilled water water inlet and is provided with temperature sensor at the water inlet end, and described chilled water outlet pipe is provided with the chilled water delivery port and is provided with temperature sensor and pressure sensor at water outlet end; Described some temperature sensors are connected with described AD module by circuit with pressure sensor, and the AD module is connected in the bus communication module by the RS485 bus, and the bus communication module connects industrial computer; Described industrial computer connects some frequency converters by the RS485 bus, and described frequency converter connects cooling tower, coolant pump, refrigerating water pump by circuit respectively.
The beneficial effects of the utility model are: construction is simple, saves cost, and is easy to maintenance; Bus adopts digital communication, has effectively overcome the shortcoming that analog signal is interfered easily and makes a mistake; Can detect the input and output frequency of frequency converter, operating temperature, more converter parameter such as input and output voltage, input and output electric current is clearly understood the electrical work state; Chilled water pump group, cooling water pump group and blower fan are carried out variable frequency regulating speed control, reach energy saving purposes.
Description of drawings
With reference to the accompanying drawings the utility model is described in further detail below.
Fig. 1 is the hardware system structure schematic diagram of the described central air-conditioning energy control system based on bus communication of the utility model embodiment.
Among the figure: 1, condenser; 2, evaporimeter; 3, air conditioning terminal; 4, bus communication module; 5, industrial computer; 6, frequency converter; 7, temperature sensor; 8, pressure sensor; 9, AD module; 10, expansion valve; 11, compressor; 12, cooling tower; 13, coolant pump; 14, refrigerating water pump.
The specific embodiment
As shown in Figure 1, the described a kind of central air-conditioning energy control system of the utility model embodiment based on bus communication, comprise central air conditioner system, remote control terminal and field control system, described central air conditioner system comprises cooling tower 12, condenser 1, evaporimeter 2 and air conditioning terminal 3, described remote control terminal comprises bus communication module 4 and industrial computer 5, and described field control system comprises some frequency converters 6 and AD module 9; Two cooling pipes are arranged between described cooling tower 12 and the condenser 1, the pipeline that wherein is provided with coolant pump is the cooling water oral siphon, another pipeline is a cooling water outlet pipe, described cooling water oral siphon is provided with the cooling water water inlet and is provided with temperature sensor 7 at the water inlet end, and described cooling water outlet pipe is provided with cooling water outlet and is provided with temperature sensor 7 in inlet end; Two one-way pipelines are arranged between described condenser 1 and the evaporimeter 2, and described duct orientation is 1 direction from evaporimeter 2 to condenser, is respectively equipped with expansion valve 10 and compressor 11 on described two pipelines; Two freezing pipelines are arranged between described evaporimeter 2 and the air conditioning terminal 3, the pipeline that wherein is provided with refrigerating water pump is the chilled water oral siphon, another pipeline is the chilled water outlet pipe, described chilled water oral siphon is provided with the chilled water water inlet and is provided with temperature sensor 7 at the water inlet end, and described chilled water outlet pipe is provided with the chilled water delivery port and is provided with temperature sensor 7 and pressure sensor 8 at water outlet end; Described some temperature sensors 7 are connected with the AD module 9 with RS485 communication function by circuit with pressure sensor 8, the real-time Simulation signal that collects is transformed into data signal, AD module 9 connects the RS485 bus, bus connects a bus communication module 4 in switch board, bus communication module 4 connects the serial port of industrial computer, signal utilizes general configuration software analysis to handle in industrial computer, export control signal then through all frequency converters 6 of the total line traffic control of RS485, frequency converter 6 connects each water pump and blower fan, thereby to the chilled water pump group, cooling water pump group and blower fan carry out variable frequency regulating speed control, reach energy saving purposes.
Concrete operation principle is: 1, by temperature sensor 7 measure that chilled waters go out, entry and cooling water goes out, the temperature of entry, AD module 9 by tool RS485 communication function collects the computer software database, judge the size of air conditioning terminal load by shell script, export suitable frequency values according to the air conditioner load size to frequency converter, thereby regulate air-condition freezing pump 14, coolant pump 13 and cooling tower 12 rotating speed of motor, reach the purpose of regulating the air-conditioner water system water yield and air quantity; 2, the monitoring software of making by configuration software is realized the judgement to whole central air conditioner system load, and control output in real time and the required refrigerating capacity of air-conditioning system are regulated automatically and controlled, and reach energy-conservation purpose.When software is realized control automatically, to the startup of system, stop, record that fault-signal is done the time, make things convenient for the inquiry of client and producer.Frequency and temperature directly are presented at software interface, make things convenient for the client to understand system operation situation.
Claims (1)
1. central air-conditioning energy control system based on bus communication, comprise central air conditioner system, remote control terminal and field control system, it is characterized in that: described central air conditioner system comprises cooling tower (12), condenser (1), evaporimeter (2) and air conditioning terminal (3), described remote control terminal comprises bus communication module (4) and industrial computer (5), described field control system comprises some frequency converters (6) and AD module (9), be provided with cooling water oral siphon and cooling water outlet pipe between described cooling tower (12) and the condenser (1), described cooling water oral siphon is provided with coolant pump (13), the water inlet end of described cooling water oral siphon is provided with temperature sensor (7), and described cooling water outlet pipe is provided with cooling water outlet and is provided with another temperature sensor (7) at water outlet end; Be provided with two between described condenser (1) and the evaporimeter (2) by the one-way pipeline of evaporimeter (2), be respectively equipped with expansion valve (10) and compressor (11) on this pipeline to condenser (1); Be provided with chilled water oral siphon and chilled water outlet pipe between evaporimeter (2) and the air conditioning terminal (3), the chilled water oral siphon is provided with refrigerating water pump (14), the water inlet end of chilled water oral siphon is provided with another temperature sensor (7), and the water outlet end of chilled water outlet pipe is provided with another temperature sensor (7) and pressure sensor (8); Described temperature sensor (7) is connected with described AD module (9) by circuit with pressure sensor (8), and AD module (9) is connected in bus communication module (4) by the RS485 bus, and bus communication module (4) connects industrial computer (5); Industrial computer (5) connects some frequency converters (6) by the RS485 bus, and described frequency converter (6) connects cooling tower (12), coolant pump (13), refrigerating water pump (14) by circuit respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201814023U CN201652715U (en) | 2010-05-06 | 2010-05-06 | Central air-conditioning energy-saving control system based on bus communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201814023U CN201652715U (en) | 2010-05-06 | 2010-05-06 | Central air-conditioning energy-saving control system based on bus communication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201652715U true CN201652715U (en) | 2010-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201814023U Expired - Fee Related CN201652715U (en) | 2010-05-06 | 2010-05-06 | Central air-conditioning energy-saving control system based on bus communication |
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| CN (1) | CN201652715U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104143921A (en) * | 2014-07-02 | 2014-11-12 | 核工业理化工程研究院 | Combined modular frequency converter and power supply system |
-
2010
- 2010-05-06 CN CN2010201814023U patent/CN201652715U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104143921A (en) * | 2014-07-02 | 2014-11-12 | 核工业理化工程研究院 | Combined modular frequency converter and power supply system |
| CN104143921B (en) * | 2014-07-02 | 2018-01-19 | 核工业理化工程研究院 | Combined modular frequency converter and electric power system |
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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: 20101124 Termination date: 20120506 |