CN201237327Y - Variable-flow energy-saving control device of central air conditioner - Google Patents
Variable-flow energy-saving control device of central air conditioner Download PDFInfo
- Publication number
- CN201237327Y CN201237327Y CNU2008201028767U CN200820102876U CN201237327Y CN 201237327 Y CN201237327 Y CN 201237327Y CN U2008201028767 U CNU2008201028767 U CN U2008201028767U CN 200820102876 U CN200820102876 U CN 200820102876U CN 201237327 Y CN201237327 Y CN 201237327Y
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Abstract
A central air conditioner flow-changing energy-saving control device relates to a monitoring device, particularly to a remote control device for flow change and energy conservation of a central air conditioner. The central air conditioner flow-changing energy-saving control device is provided with an intelligent controller, an analogue input module, an analogue output module, a switching value control/detection module, a GPRS module, a freezing pump frequency converter, a cooling pump frequency converter, a freezing pump water outlet temperature sensor, a freezing pump water inlet temperature sensor, a cooling pump water inlet temperature sensor, and a cooling pump water return port temperature sensor. The chilled water system and the cooling water system can follow up the cooling requirement of the air conditioner mainframe in real time, and save energy on the premise that the air conditioner mainframe runs safely. The control circuit is simple and reliable and ensures professional and accurate control. The cost is lower than that of the signal acquisition board and the programmable controller in the prior art. Additionally, the control device has the advantages of high energy-saving efficiency and easy promotion.
Description
Technical field
The utility model relates to a kind of supervising device, especially relates to a kind of GPRS of employing communication technology to the energy-conservation device that carries out remote monitoring of central air-conditioning unsteady flow amount.
Background technology
In the discharge design of conventional central air-conditioner water system, normally determine according to the maximum cold load of building design.And the central air conditioner system of using generally adopts the constant flow operation, and this method of operation can guarantee the cold and hot energy exchange in the building fully, and bring up comfortable air ambient through engineering circle facts have proved for many years.But because the ambient temperature of building is dynamic with season and circadian variation, interior of building will cause dynamic change to central air conditioner energy workload demand to the changes in demand of refrigeration duty.Long-term test results shows that because the dynamic change of ambient temperature and internal load, the central air conditioner system ubiquity the invalid energy consumption more than 30%, in other words, is exactly that central air conditioner system exists the minimum energy saving space more than 30%.And chilled water system has accounted for sizable ratio in the central air conditioner system energy consumption, so resolve the energy-conservation of central air conditioning water system, just can save the huge energy of most of central air conditioner system waste.
Publication number is that the Chinese patent application of CN1482409 discloses a kind of central air-conditioning energy fuzzy control method and fuzzy controller, is made of microcomputer, input circuit, output circuit, holding circuit, communication interface circuit, power supply and the control program that is solidificated in the microcomputer.
Publication number for the Chinese patent application of CN1598425A provide a kind of central air-conditioning freezing/the warm water energy saver, it is made up of intelligent controller, input module, output module, frequency converter and transmitter etc.; By season, Sunday, hour service quality rating different operation strategies is set, by real-time collection freezing/operational factor of warm water system, intelligent controller is worked out operating software according to fuzzy control theory, and system mode is carried out identification, computing, decision-making.
Publication number provides a kind of central air-conditioning energy control system for the Chinese patent application of CN2896099Y, this system is provided with chilled water import and export temperature sensor on chilled water subsystem pipeline, cooling water import and export temperature sensor is set on cooling water subsystem pipeline, described sensor is connected respectively through each frequency converter of corresponding signal analog input card, Programmable Logic Controller and relevant pump motor, by frequency converter the pump of chilled water system and the pump and the blower fan of cooling water system is controlled respectively.
Summary of the invention
The purpose of this utility model is to provide a kind of central air-conditioning energy saving control device with variable flux at existing central air conditioning water system power-economizing method and the existing deficiency of energy-saving equipment.
The technical solution of the utility model is that the collection refrigerating water pump advances return water temperature, coolant pump advances parameters such as return water temperature and pipeline pressure, utilizes FUZZY ALGORITHMS FOR CONTROL establishment operating software, to realize utilizing the application of converter technique on pump energy saving; Simultaneously by realizing operation condition in site is carried out remote real-time monitoring based on the GPRS technology.
The utility model is provided with intelligent controller, the analog quantity input module, analog output module, switching value control detection module, the GPRS module, the refrigerating water pump frequency converter, the coolant pump frequency converter, refrigerating water pump delivery port temperature sensor, refrigerating water pump water inlet temperature sensor, coolant pump feed water inlet temperature sensor and coolant pump water return outlet temperature sensor, the collection signal input part of intelligent controller connects the analog acquisition output of analog quantity input module, analog output module input termination intelligent controller control signal output, the data signal that obtains being correlated with from intelligent controller, export corresponding analog voltage, intelligent controller is connected with the GPRS module with switching value control detection module respectively, intelligent controller is connected with monitoring host computer by GPRS network, the signals collecting input termination refrigerating water pump delivery port temperature sensor of analog quantity input module, refrigerating water pump water inlet temperature sensor, coolant pump feed water inlet temperature sensor and coolant pump water return outlet temperature sensor, the analog output module output connects refrigerating water pump frequency converter analog quantity input signal end and coolant pump frequency converter analog quantity input signal end respectively, switching value control detection module control end is connected with the coolant pump frequency converter with the refrigerating water pump frequency converter respectively with the test side, switching value control detection module control end and test side and external equipment contactor, GPRS module communication end connects the Asynchronous Serial Interface of intelligent controller by the RS232 interface.
In intelligent controller, be provided with clock module, can mode of operation be set, provide markers for system's history log and warning message simultaneously according to the time period.Intelligent controller is provided with RGB lcd touch module, can detect the contact position on the liquid crystal display in real time, switches different display interfaces according to relevant function key, provides actual operation parameters setting and running status to show.
Signals collecting input connection refrigerating water pump delivery port temperature sensor, refrigerating water pump water inlet temperature sensor, coolant pump feed water inlet temperature sensor and coolant pump water return outlet temperature sensor at the analog quantity input module carry out temperature signal collection, the control signal input of analog quantity input module output termination intelligent controller will be gathered signal and deliver to and carry out fuzzy operation in the intelligent controller.
Analog output module receives the digital quantity signal controlled quentity controlled variable by the intelligent controller transmission, convert analog voltage signal to, the output of analog output module connects refrigerating water pump frequency converter and coolant pump frequency converter respectively, corresponding analog voltage one tunnel is delivered to the frequency converter of refrigerating water pump, and this frequency converter is connected with the chilled water pump group by threephase cable; The frequency converter of coolant pump is delivered on another road, and this frequency converter is connected with the cooling water pump group by threephase cable.
Be provided with the switching value detection module in the switching value control detection module, the switching value detection module is connected to the contactor of refrigerating water pump frequency converter, control refrigerating water pump frequency converter, by-pass switch, coolant pump frequency converter, the contactor of control coolant pump frequency converter and the by-pass switch of coolant pump frequency converter of refrigerating water pump frequency converter, detect operation, the fault-signal of refrigerating water pump frequency converter, also detect operation, the fault-signal of coolant pump frequency converter, detect the contactor adhesive signal and the by-pass switch signal of control frequency converter break-make simultaneously, these detection signals are delivered in the intelligent controller; Also be provided with the switching value control module in the detection module of switching value control simultaneously, the switching value control module is connected to contactor, the control coolant pump frequency converter contactor of control refrigerating water pump frequency converter, the start-stop of control frequency converter.
Energy-saving principle of the present utility model is: detect the inflow temperature and the return water temperature of refrigerating water pump in real time, the inflow temperature of coolant pump and return water temperature are with the difference of the return water temperature value that records and the inflow temperature value control foundation as refrigerating water pump; With the difference of the inflow temperature value that records and return water temperature value control foundation as coolant pump; Consider the pipeline pressure of top layer simultaneously; According to the strong FUZZY ALGORITHMS FOR CONTROL making software programme-control refrigerating water pump of applicability and the rotating speed of coolant pump, make it load shedding work, save motor power, realize the cooling demand of chilled water and cooling water system real-time tracking air-conditioner host, under the prerequisite that guarantees the air-conditioner host trouble free service, reach best energy-saving effect.Adopt intelligent controller, analog quantity input integrated circuit board, analog quantity output integrated circuit board, switching value to detect the control integrated circuit board in addition and use with the supporting frequency converter of water pump, control circuit is simple and reliable, control accurately, cost is lower than the signals collecting integrated circuit board of generally use and the control model of Programmable Logic Controller, fractional energy savings improves greatly, is easy to apply.
Description of drawings
Fig. 1 is that the circuit of the utility model embodiment is formed theory diagram.
Fig. 2 is the power module circuitry theory of constitution figure of the intelligent controller of the utility model embodiment.
Fig. 3 is the microcontroller circuit theory of constitution figure of the intelligent controller of this use new embodiment.
Fig. 4 is that the communication module circuit of the intelligent controller of the utility model embodiment is formed schematic diagram.
Fig. 5 is that the analog quantity input module circuit of the utility model embodiment is formed schematic diagram.
Fig. 6 is that the analog output module circuit of the utility model embodiment is formed schematic diagram.
Fig. 7 is that the RGB liquid crystal touch screen circuit of the intelligent controller of the utility model embodiment is formed schematic diagram.
Fig. 8 forms schematic diagram for the clock module circuit of this use new embodiment.
Fig. 9 is that the switching value control module circuit of the switching value control detection module of the utility model embodiment is formed schematic diagram.
Figure 10 is that the switching value detection module circuit of the switching value control detection module of the utility model embodiment is formed schematic diagram.
The specific embodiment
Below in conjunction with accompanying drawing and enforcement the utility model is further described.
Referring to Fig. 1, present embodiment is provided with intelligent controller 1, analog quantity input module 2, analog output module 3, switching value control detection module 4, GPRS module 5, refrigerating water pump frequency converter 6, coolant pump frequency converter 7, refrigerating water pump delivery port temperature sensor 8, refrigerating water pump water inlet temperature sensor 9, coolant pump feed water inlet temperature sensor 10, coolant pump water return outlet temperature sensor 11, clock module 12 and RGB liquid crystal touch screen 13.Intelligent controller 1 is connected with RGB liquid crystal touch screen 13 with analog quantity input module 2, analog output module 3, switching value control detection module 4, GPRS module 5, clock module 12 respectively.
The data communication interface of analog quantity input module 2 and analog output module 3 is connected to the signaling interface of intelligent controller 1 with DB9 needle serial port line.Analog quantity input module 2 collection chilled waters advance, return water temperature, and cooling water advances, the return water temperature process signal, and these semaphores are delivered to intelligent controller; Send analog output module 3 again back to through obtaining data after the intelligent controller calculating, analog output module 3 becomes data conversion the analog signal of 0～10V voltage, deliver to refrigerating water pump frequency converter and coolant pump frequency converter by signal cable, the refrigerating water pump frequency converter is connected with the coolant pump group with refrigerating water pump respectively through threephase cable with the coolant pump frequency converter.
The switching value communication interface of switching value control detection module 4 detects communication interface with the switching value control that DB25 needle serial port line is connected to intelligent controller 1, and the signal that detects is delivered to intelligent controller and control corresponding is done in the instruction of intelligent controller.Control end connects external A.C. contactor solenoid end, in order to the switch and the bypass contactor switch of control refrigerating water pump, coolant pump Frequency Converter Control contactor; The test side connects the switching value detection signal terminal of external A.C. contactor normally-open normally-close contact and refrigerating water pump, coolant pump frequency converter, the signal that detects has the switch of control refrigerating water pump, coolant pump Frequency Converter Control contactor, the operation and the malfunction of bypass contactor on off state and refrigerating water pump, coolant pump frequency converter.
Referring to Fig. 2, the Switching Power Supply of external 12V is connected to LM2575 integrated regulator U1 through interface PWR and converts the power supply of 5V voltage as RGB liquid crystal touch screen, clock module, RS232 communication interface and switching value control detection module to, 5V voltage passes through LM1117-3.3V integrated circuit U2 again and converts 3.3V voltage to, power supply as microprocessor LPC2214, analog quantity input module and switching value control detection module, 5V voltage passes through LM1117-1.8V integrated circuit U3 again and converts 1.8V voltage to, as the power supply of microprocessor LPC2214.
Referring to Fig. 3, the microprocessor MCU of intelligent controller is core of the present utility model, microprocessor MCU adopts 32 bit processor LPC2214 of ARM7 series, refrigerating water pump advances backwater temperature difference to microprocessor MCU and coolant pump advances the load that backwater temperature difference is judged central air conditioner system by detecting, and through fuzzy operation control signal is delivered to analog output module and controls refrigerating water pump frequency converter and coolant pump frequency converter.
Referring to Fig. 4, received signal and transmission signal are sent by the LPC2214 microprocessor, received signal and transmission signal are connected to MAX232 integrated circuit U8, received signal sends to the MAX232 communication interface by the GPRS signal and is connected to MAX232 integrated circuit U8, MAX232 integrated circuit U8 is connected to the LPC2214 microprocessor, send signal and be connected to MAX232 integrated circuit U8, be connected to the RS232 communication interface by MAX232 integrated circuit 8 again by the LPC2214 microprocessor.
Referring to Fig. 5, the analog quantity input module is gathered the analog signals that is transmitted by temperature sensor and pressure sensor by CS5534 integrated circuit U12, and the data that collect are obtained current temperature value by carrying out exchanges data with the LPC2214 microprocessor.
Referring to Fig. 6, by carrying out the specific analog voltage of exchanges data output with the LPC2214 microprocessor, analog voltage is amplified to the input end of analog signal of delivering to refrigerating water pump frequency converter and coolant pump frequency converter behind 0～10V aanalogvoltage to analog output module through TL082 integrated circuit U15 by TLV5618A integrated circuit U14.
Referring to Fig. 7, the RGB liquid crystal touch screen is connected on the LPC2214 microprocessor by interface TFT6448, touch-screen control chip ADS7843 integrated circuit U9 is connected on the LPC2214 microprocessor, carries out the interface by the corresponding relevant function key of the contact position on the senses touch screen and switches and system parameter setting.
Referring to Fig. 8, clock module is used for exchanges data by the interface that SD2300 integrated circuit of clock U16 is connected to the LPC2214 microprocessor, reads current real-time time.
Referring to Fig. 9 and 10, switching signal detects and receives P521 optocoupler U3 and U4 by interface JP1 and JP2, P521 optocoupler U15 and U16 are transferred to the LPC2214 microprocessor to the signal that collects by DB25 needle interface JP4, the switching signal control instruction is sent through behind the 74HC244 integrated circuit U17 drive circuit by the LPC2214 microprocessor, delivers to P621 optocoupler U18 again and outputs to interface JP3 through the electromagnetic relay control end.
The label of power module, title value and components and parts title are referring to table 1.
Table 1
Host CPU, reset and label, title value and the components and parts title of memory module referring to table 2.
Table 2
The label of analog quantity input and output module, title value and components and parts title are referring to table 3.
Table 3
The label of communication module, lcd touch panel module and clock module, title value and components and parts title are referring to table 4.
Table 4
Label, title value and components and parts title that switching value detects are referring to table 5.
Table 5
Label, title value and the components and parts title of switching value control are referring to table 6.
Table 6
Claims (5)
1. central air-conditioning energy saving control device with variable flux, it is characterized in that being provided with intelligent controller, the analog quantity input module, analog output module, switching value control detection module, the GPRS module, the refrigerating water pump frequency converter, the coolant pump frequency converter, refrigerating water pump delivery port temperature sensor, refrigerating water pump water inlet temperature sensor, coolant pump feed water inlet temperature sensor and coolant pump water return outlet temperature sensor, the collection signal input part of intelligent controller connects the analog acquisition output of analog quantity input module, analog output module input termination intelligent controller control signal output, intelligent controller is connected with the GPRS module with switching value control detection module respectively, intelligent controller is connected with monitoring host computer by GPRS network, the signals collecting input termination refrigerating water pump delivery port temperature sensor of analog quantity input module, refrigerating water pump water inlet temperature sensor, coolant pump feed water inlet temperature sensor and coolant pump water return outlet temperature sensor, the analog output module output connects refrigerating water pump frequency converter analog quantity input signal end and coolant pump frequency converter analog quantity input signal end respectively, switching value control detection module control end is connected with the coolant pump frequency converter with the refrigerating water pump frequency converter respectively with the test side, switching value control detection module control end and test side and external equipment contactor, GPRS module communication end connects the Asynchronous Serial Interface of intelligent controller by the RS232 interface.
2. central air-conditioning energy saving control device with variable flux as claimed in claim 1 is characterized in that being provided with clock module in intelligent controller.
3. central air-conditioning energy saving control device with variable flux as claimed in claim 1 or 2 is characterized in that intelligent controller is provided with RGB lcd touch module.
4. central air-conditioning energy saving control device with variable flux as claimed in claim 1, it is characterized in that described switching value control detection module is provided with the switching value detection module, the switching value detection module is connected to the contactor of refrigerating water pump frequency converter, control refrigerating water pump frequency converter, by-pass switch, coolant pump frequency converter, the contactor of control coolant pump frequency converter and the by-pass switch of coolant pump frequency converter of refrigerating water pump frequency converter.
5. central air-conditioning energy saving control device with variable flux as claimed in claim 1, it is characterized in that switching value control detection module is provided with the switching value control module, the switching value control module is connected to contactor, the control coolant pump frequency converter contactor of control refrigerating water pump frequency converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201028767U CN201237327Y (en) | 2008-06-27 | 2008-06-27 | Variable-flow energy-saving control device of central air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201028767U CN201237327Y (en) | 2008-06-27 | 2008-06-27 | Variable-flow energy-saving control device of central air conditioner |
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| Publication Number | Publication Date |
|---|---|
| CN201237327Y true CN201237327Y (en) | 2009-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008201028767U Expired - Fee Related CN201237327Y (en) | 2008-06-27 | 2008-06-27 | Variable-flow energy-saving control device of central air conditioner |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922773A (en) * | 2009-06-17 | 2010-12-22 | 唐山市地源热泵有限公司 | Changeable flow ground source heat pump unit system, controller and control method |
| CN101988728A (en) * | 2010-11-24 | 2011-03-23 | 东南大学 | Central air-conditioning control system combining radiation terminal cooling and warming and fresh air |
| CN102563815A (en) * | 2012-02-20 | 2012-07-11 | 武汉达明科技有限公司 | Underground water energy-saving air conditioning control method and system |
| CN104390316A (en) * | 2014-12-25 | 2015-03-04 | 李钢 | Distributed freeze pump controller for concentrated air conditioning |
-
2008
- 2008-06-27 CN CNU2008201028767U patent/CN201237327Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922773A (en) * | 2009-06-17 | 2010-12-22 | 唐山市地源热泵有限公司 | Changeable flow ground source heat pump unit system, controller and control method |
| CN101988728A (en) * | 2010-11-24 | 2011-03-23 | 东南大学 | Central air-conditioning control system combining radiation terminal cooling and warming and fresh air |
| CN102563815A (en) * | 2012-02-20 | 2012-07-11 | 武汉达明科技有限公司 | Underground water energy-saving air conditioning control method and system |
| CN102563815B (en) * | 2012-02-20 | 2015-02-11 | 武汉达明科技有限公司 | Underground water energy-saving air conditioning control method and system |
| CN104390316A (en) * | 2014-12-25 | 2015-03-04 | 李钢 | Distributed freeze pump controller for concentrated air conditioning |
| CN104390316B (en) * | 2014-12-25 | 2017-05-17 | 李钢 | Distributed freeze pump controller for concentrated air conditioning |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090513 Termination date: 20170627 |