CN205066054U - Controlling means and control system of central air conditioning water system - Google Patents
Controlling means and control system of central air conditioning water system Download PDFInfo
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- CN205066054U CN205066054U CN201520688771.4U CN201520688771U CN205066054U CN 205066054 U CN205066054 U CN 205066054U CN 201520688771 U CN201520688771 U CN 201520688771U CN 205066054 U CN205066054 U CN 205066054U
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- air conditioning
- central air
- water system
- conditioning water
- control device
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Abstract
The utility model provides a controlling means of central air conditioning water system. The controlling means of central air conditioning water system includes controller group, DODI module, AOAI module and communication module, controller group is including a plurality of controllers, pass through between a plurality of controllers communication module carries out bi -directional data transmission, a plurality of controllers respectively with the DODI module with AOAI module both way junction. Controlling means is right logic control is carried out in the load of central air conditioning water system, not only obtains to have better temperature control effect, still reduces the energy consumption of central air conditioning water system, soft start moreover the motor of central air conditioning water system reduces impulse current greatly, reduces the motor bearing wearing and tearing, the extension motor life -span. The utility model provides an use the controlling means's of central air conditioning water system control system.
Description
Technical field
The utility model relates to for water management techniques field, particularly relates to a kind of control device and control system of central air conditioning water system.
Background technology
The switch board being conventionally used to central air conditioner system adopts in the past old control mode, that is: carry out centralized watch and start and stop unit number control to Compressor Group, water pump, blower fan, only emphasize the controlling to equipment, to reach the object regulating temperature.
Wherein, there is following shortcoming in above-mentioned regulative mode:
1, the long-time standard-sized sheet of equipment or full cut-off, run in turn, and waste electric energy is surprising;
2, the direct power frequency startup of motor, dash current is large, has a strong impact on service life of equipment; And
3, when environment or cooling and heating load change, can only by increasing and decreasing the quantity of hot and cold water pump or using deep bead to regulate indoor temperature, temperature fluctuation is large, and temperature control effect is bad, and comfort is poor.
Therefore, be necessary to design a kind of low energy consumption for above-mentioned shortcoming, temperature control effect is good, can realize the control device of the central air conditioning water system of water system soft start.
Utility model content
The technical problem that the utility model mainly solves is to provide a kind of low energy consumption, and temperature control effect is good, can realize control device and the control system of the central air conditioning water system of water system soft start.
The control device of described central air conditioning water system comprises controller group, DO/DI module (Digitalout/Digitalin module, data signal output/input module), AO/AI module (Analogout/Analogin module, analog signal output/input module) and communication module, described controller group comprises multiple controller, carries out bidirectional data transfers between described multiple controller by described communication module; Described multiple controller is bi-directionally connected with described DO/DI module and described AO/AI module respectively.
In control device one preferred embodiment of the central air conditioning water system provided at the utility model, described DO/DI module, described AO/AI module and described communication module are all installed with described controller moduleization.
In control device one preferred embodiment of the central air conditioning water system provided at the utility model, described controller is programmable logic controller (PLC).
In control device one preferred embodiment of the central air conditioning water system provided at the utility model, described communication module is RS485 communication module.
In control device one preferred embodiment of the central air conditioning water system provided at the utility model, s-Bus communications protocol supported by the control device of described central air conditioning water system, Profibus communications protocol, Modbus communications protocol, TCP/IP communications protocol and web page server communications protocol wherein any one.
In control device one preferred embodiment of the central air conditioning water system provided at the utility model, the control device of described central air conditioning water system also comprises reserved port, and the control device of described central air conditioning water system builds master-substation LAN by described reserved port and realizes data sharing and operate across a station.
In control device one preferred embodiment of the central air conditioning water system provided at the utility model, the control device of described central air conditioning water system also comprises man-machine interface, described man-machine interface and described AO/AI module are bi-directionally connected, and realize the local operation to described control device or operated from a distance.
A kind of control system of central air conditioning water system comprises signal pickup assembly, control device and actuating unit, described signal pickup assembly gathers the running status of described water system, and export operating state signal to described control device, the control device of described central air conditioning water system controls the running status that described actuating unit regulates described central air conditioning water system, and the control device of described central air conditioning water system is the control device of above-mentioned arbitrary described central air conditioning water system.
In control system one preferred embodiment of the central air conditioning water system provided at the utility model, described signal pickup assembly to comprise in cooling-water temperature sensor, environment humidity sensor, gas concentration sensor, differential pressure pickup, flowmeter and electronic electric energy meter any one or several combination.
In control system one preferred embodiment of the central air conditioning water system provided at the utility model, described actuating unit comprises at least one frequency converter.
In the control device of the control system of the central air conditioning water system that the utility model provides, bidirectional data transfers is carried out by communication module between multiple controller, and multiple controller is bi-directionally connected with DO/DI module and AO/AI module respectively, therefore the control device of described central air conditioning water system carries out logic control to the load of described central air conditioning water system, the energy consumption of described central air conditioning water system can be reduced, obtain the motor of central air conditioning water system described in good temperature control effect and soft start, greatly reduce dash current, reduce motor bearings wearing and tearing, extend electrical machinery life.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings, wherein:
Fig. 1 is the principle schematic of the central air conditioning water system that the control system of the central air conditioning water system that the utility model provides controls;
Fig. 2 is the structural representation of the LAN that the control system of the central air conditioning water system that the utility model provides builds;
Fig. 3 is the structural representation of control device in the control system of central air conditioning water system shown in Fig. 2.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only a part of embodiment of the present utility model, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making other embodiments all obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Referring to Fig. 1, is the principle schematic of the central air conditioning water system 100 that control system 200 that the utility model provides controls.Described central air conditioning water system 100 comprises the chilled water circulatory system 11 and cooling water recirculation system 12, and the described chilled water circulatory system 11 and described cooling water recirculation system 12 realize the exchange heat with the interior space respectively by the main frame 13 of described central air-conditioning.
The described chilled water circulatory system 11 comprises water collector 111, refrigerating water pump 113 and the water knockout drum 115 that circular order is communicated with, and to the expansion tank 117 that described water collector 111 supplies water.Wherein, described main frame 13 is between described refrigerating water pump 113 and described water knockout drum 115.Water in described water collector 111 enters in described main frame 13 by described refrigerating water pump 113, then enters in water knockout drum 115 via described main frame 13, then returns in described water collector 111.
Described cooling water recirculation system 12 comprises cooling tower 121 and the coolant pump 123 of circular order connection.Described main frame 13 is between described cooling tower 121 and described coolant pump 123, and wherein, described cooling tower 121 reception is flow through the cooling water of described main frame 13 and cooled, and is then re-circulated in described main frame 13 by coolant pump 123.Wherein, described cooling tower 121 is negative pressure cooling tower.
Wherein, in described central air conditioning water system 100, except described refrigerating water pump 113 and described coolant pump 123, the blower fan (not shown) of cooling air is provided in addition, is located at the electrically operated valve (not shown) in ventilating water pipe and starts the motor (not shown) etc. of described refrigerating water pump 113, described coolant pump 123 and described blower fan.
Referring to Fig. 2, is the structural representation of the LAN of control system 200 structure that the utility model provides.Described control system 200 is connected with computer 40 by protocol conversion apparatus 30, realizes the information transmission between described control system 200 and described computer 40.Wherein, described control system 200 comprises signal pickup assembly 21, control device 22 and actuating unit 23, described signal pickup assembly 21 gathers the running status of described central air conditioning water system 100, and exporting operating state signal to described control device 22, described control device 22 controls the running status that described actuating unit 23 regulates described central air conditioning water system 100.Described actuating unit 23 comprises at least one frequency converter, and the running status of described control device 22 central air conditioning water system 100 described in indirect regulation by the running frequency of the described frequency converter of change.
Wherein, described signal pickup assembly 21 to comprise in cooling-water temperature sensor, environment humidity sensor, gas concentration sensor, differential pressure pickup, flowmeter and electronic electric energy meter any one or several combination, and these needs are selected according to concrete actual conditions.And, described signal pickup assembly 21 is arranged on the corresponding position of described central air conditioning water system 100, with the running status of central air conditioning water system described in Real-time Collection 100, and the corresponding operating state signal of corresponding output, thus monitor the real-time running state of described central air conditioning water system 100.
Incorporated by reference to consulting Fig. 3, it is the structural representation of control device 22 in control system 200 shown in Fig. 2.Described control device 22 comprises man-machine interface 221, communication module 223, controller group 224, DO/DI module 225 and AO/AI module 226.Wherein, described man-machine interface 221 is bi-directionally connected with AO/AI module 226, and described controller group 224 comprises multiple controller, and described multiple controller is bi-directionally connected by described communication module 223.And described multiple controller is bi-directionally connected with described DO/DI module 225 and described AO/AI module 226 respectively.
Described man-machine interface 221 can be located at mobile communication terminal, such as mobile phone, notebook computer etc., also can be fixed communication terminal, such as industrial computer etc.Described man-machine interface 221 realizes local operation to described main control computer 222 or operated from a distance, thus makes controlled plant to be carried out to the operations such as start and stop, running status display, setting parameter and become simple.
Described communication module 223 is RS485 communication module.Described communication module 223 can make the Signal transmissions of described control device 22 have the advantage of transfer rate, higher transmission quality and transmission range far away faster, thus improves the q&r of described control device 22 Signal transmissions.Wherein, described communication module 223 is installed with described controller 224 modular removable, thus quick-replaceable process when being convenient to assembling and fault.
Multiple controllers in described controller group 224 are programmable logic controller (PLC).In the control system 200 that the utility model provides, described control device 22 utilizes the controlled load of described controller group 224 to described central air conditioning water system 100 to carry out logic control, thus realizes the load optimized control of described central air conditioning water system 100 and energy-saving run.
Described DO/DI module 225 and described AO/AI module 226 are all installed with described controller group 224 modularization, thus quick-replaceable process when being convenient to assembling and fault.
Wherein, the operating state signal of described central air conditioning water system 100 is transferred to corresponding described controller group 224 by described DO/DI module 225, and the digital output modul Signal transmissions described controller group 224 exported is to described actuating unit 23; The Analog control Signal transmissions that described man-machine interface 221 exports by described AO/AI module 226 is to described controller group 224, and the analog quantity feedback signal transmission described controller group 224 exported is to described man-machine interface 221.
Wherein, in the control device 22 that the utility model provides, in described controller group 224, each controller is equipped with relay terminal row.Described controller signals input and signal export and all need through relay terminal row, thus realize the overcurrent protection function of described controller group 224.
It should be noted that, described control device 22 can support s-Bus communications protocol, Profibus communications protocol, Modbus communications protocol, TCP/IP communications protocol and web page server communications protocol wherein any one, there is powerful communication capacity.And described control device 22 is provided with reserved port (not shown) in described controller group 224, described control device 22 can build master-substation LAN by described reserved port and realizes data sharing and operate across a station.
And described control system 22 can be networked by fieldbus and central control room, realizes remote centralized control.
When described central air conditioning system 200 runs, the operating state signal that described signal pickup assembly 21 gathers described central air conditioning water system 100 inputs to described controller group 224 by described DO/DI module 225; Described man-machine interface 221 sends analog signals, and it is transferred to described controller group 224 by described AO/AI module 226.
The signal that described controller group 224 receives according to it, sends corresponding instruction.Wherein, described controller group 224 exports described digital output modul signal, and transfers to described actuating unit 23 by described DO/DI module 225, and regulates the running frequency of described actuating unit 23 by described digital output modul signal.Described controller group 224 exports described analog quantity feedback signal, and transfers to described man-machine interface 221 by described AO/AI module 226, and described analog quantity feedback signal is shown in described man-machine interface 221.
Therefore, described control system 200 can realize being optimized all kinds of loads of described central air conditioning water system 100 controlling with the object reaching energy-saving run through user program and fuzzy control.And, the running status of described control system 200 by regulating the running frequency of frequency converter to control described central air conditioning water system 100, not only can motor in central air conditioning water system 100 described in soft start, greatly reduces dash current, reduce motor bearings wearing and tearing, extend bearing life; When regulating flow and the pressure of described water pump and described blower fan, can also reduce or cancel the use of baffle plate and valve.So the power consumption of described control system 200 declines greatly, and noise reduces.
Further, if adopt temperature scaling factor mode, described control system 200 regulates air quantity automatically by testing environment temperature, and automatically regulate with the change of weather, thermic load, make indoor variations in temperature little, regulate rapidly, strengthen temperature control effect, improve comfort.
Compared to prior art, in the control device 22 of the control system 200 of the central air conditioning water system that the utility model provides, bidirectional data transfers is carried out by communication module 223 between multiple controller, and multiple controller is bi-directionally connected with DO/DI module 225 and AO/AI module 226 respectively, therefore logic control is carried out in the load of described control device 22 to described central air conditioning water system 100, the energy consumption of described central air conditioning water system 100 can be reduced, obtain the motor of central air conditioning water system 100 described in good temperature control effect and soft start, greatly reduce dash current, reduce motor bearings wearing and tearing, extend electrical machinery life.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model description and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present utility model.
Claims (10)
1. the control device of a central air conditioning water system, it is characterized in that, comprise controller group, DO/DI module, AO/AI module and communication module, described controller group comprises multiple controller, carries out bidirectional data transfers between described multiple controller by described communication module; Described multiple controller is bi-directionally connected with described DO/DI module and described AO/AI module respectively.
2. the control device of central air conditioning water system according to claim 1, is characterized in that, described DO/DI module, described AO/AI module and described communication module are all installed with described controller moduleization.
3. the control device of central air conditioning water system according to claim 1, is characterized in that, described controller is programmable logic controller (PLC).
4. the control device of central air conditioning water system according to claim 1, is characterized in that, described communication module is RS485 communication module.
5. the control device of central air conditioning water system according to claim 1, it is characterized in that, s-Bus communications protocol supported by the control device of described central air conditioning water system, Profibus communications protocol, Modbus communications protocol, TCP/IP communications protocol and web page server communications protocol wherein any one.
6. the control device of central air conditioning water system according to claim 1, it is characterized in that, the control device of described central air conditioning water system also comprises reserved port, and the control device of described central air conditioning water system builds master-substation LAN by described reserved port and realizes data sharing and operate across a station.
7. the control device of central air conditioning water system according to claim 1, it is characterized in that, the control device of described central air conditioning water system also comprises man-machine interface, and described man-machine interface and described AO/AI module are bi-directionally connected, and realize the local operation to described control device or operated from a distance.
8. the control system of a central air conditioning water system, it is characterized in that, it comprises signal pickup assembly, control device and actuating unit, described signal pickup assembly gathers the running status of described water system, and export operating state signal to described control device, described control device controls the running status that described actuating unit regulates described central air conditioning water system, and described control device is the control device of the arbitrary described central air conditioning water system of the claims 1 to 7.
9. the control system of central air conditioning water system according to claim 8, it is characterized in that, described signal pickup assembly to comprise in cooling-water temperature sensor, environment humidity sensor, gas concentration sensor, differential pressure pickup, flowmeter and electronic electric energy meter any one or several combination.
10. the control system of central air conditioning water system according to claim 8, is characterized in that, described actuating unit comprises at least one frequency converter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520688771.4U CN205066054U (en) | 2015-09-07 | 2015-09-07 | Controlling means and control system of central air conditioning water system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520688771.4U CN205066054U (en) | 2015-09-07 | 2015-09-07 | Controlling means and control system of central air conditioning water system |
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| CN205066054U true CN205066054U (en) | 2016-03-02 |
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| CN201520688771.4U Expired - Fee Related CN205066054U (en) | 2015-09-07 | 2015-09-07 | Controlling means and control system of central air conditioning water system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110006136A (en) * | 2018-10-31 | 2019-07-12 | 河北省机电一体化中试基地 | A kind of heat pump air conditioner unit and energy-saving control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110006136A (en) * | 2018-10-31 | 2019-07-12 | 河北省机电一体化中试基地 | A kind of heat pump air conditioner unit and energy-saving control method |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160302 Termination date: 20200907 |
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| CF01 | Termination of patent right due to non-payment of annual fee |