Integrated intelligent driver special for fan and water pump of central air-conditioning energy-saving control system
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An energy-saving control system and central air-conditioning technology, applied in heating and ventilation control systems, space heating and ventilation, heating and ventilation safety systems, etc., can solve the problems of complex internal circuits, large equipment volume, and high cost
Inactive Publication Date: 2021-07-27
JIANGSU TEKENENNA ENERGY SAVING TECH
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[0003] The purpose of the present invention is to provide a special integrated intelligent driver for the fan and water pump of the central air-conditioning energy-saving control system, which is used to solve the problems of high cost, large equipment volume, complex internal circuit and difficult after-sales maintenance of the existing central air-conditioning energy-saving fan or water pump control system
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example 1
[0054] Example 1: Taking a pressure sensor with a current type of 4-20mA and a range of 0-1600kPa as an example, the 4-20mA signal processing of the analog circuit software is a value of 800-4000, and the value of 800-4000 corresponds to 0-1600kPa. The current is 13mA, corresponding to A=4, B=20, C=800, D=4000, G=0, H=1600, V=13, the calculation process of the pressure measured by the sensor is as follows:
[0055] F = (D-C) / (B-A)*(V-A)+C =(4000-800) / (20-4)*(13-4)+800=2600
[0056] F = (D-C) / (H-G)*(X-A)+C=(4000-800) / (1600-0)*(X-0)+800= 2600
[0057] Solution, X=900, that is, the pressure value measured by the sensor is 900kPa.
example 2
[0058] Example 2: Taking a pressure sensor with a voltage type of 0-10V and a range of 0-1000kPa as an example, the 0-10V signal processing of the analog circuit software is a value of 0-4000, and the value of 0-4000 corresponds to 0-1000kPa. The voltage is 3.3V, that is, A=0, B=10, C=0, D=4000, G=0, H=1000, V=3.3, the calculation process of the pressure measured by the sensor is as follows:
[0059] F = (D-C) / (B-A)*(V-A)+C =(4000-0) / (10-0)*(3.3-0)+0=1320
[0060] F = (D-C) / (H-G)*(X-A)+C=(4000-0) / (1000-0)*(X-0)+0= 1320
[0061] Solution, X=330, that is, the pressure value measured by the sensor is 330kPa.
[0062] The present invention is a dedicated integrated intelligent driver for fans and water pumps in a central air-conditioning energy-saving control system, which can realize the speed regulation of fans and pumps in a large-scale water-cooled central air-conditioning energy-saving control system. Low cost, high integration, small equipment size, convenient after-sales,...
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Abstract
The invention discloses an integrated intelligent driver special for a fan and a water pump of a central air-conditioning energy-saving control system. The integrated intelligent driver comprises a rectification unit, a filtering unit, an inversion unit, a speed regulation processing unit and an intelligent driving unit, the rectification unit rectifies AC 380V into DC 540V and then inputs the DC 540V into the filtering unit for harmonic filtering, the DC power supply after harmonic filtering is converted into AC power supply under the action of the inversion unit and the speed regulation processing unit, the output end of the intelligent driving unit is connected with the input end of the speed regulation processing unit, the input end of the intelligent driving unit is connected with a manual and automatic switching speed regulation module, a current or voltage switching type acquisition module, a temperature acquisition NTC module and an isolation type digital signal input module, and the output end of the intelligent driving unit is connected with a current or voltage switching type output module and a relay output module. According to the integrated intelligent driver special for the fan and the water pump of the central air-conditioning energy-saving control system, all the modules are integrated together, a control loop does not need to be built for the second time, and speed regulation of the fan and the water pump of a central air conditioner is achieved.
Description
technical field [0001] The invention relates to a special integrated intelligent driver for fans and water pumps in a central air-conditioning energy-saving control system, belonging to the technical field of central air-conditioning energy-saving control systems. Background technique [0002] In the central air-conditioning energy-saving control system, it is necessary to control the speed of the fan or water pump to realize the following functions of the system: speed control of the fan and water pump, realize manual and automatic switching, realize temperature, pressure, ambient temperature and humidity signal collection, realize the output control of the regulating valve, Realize the construction of communication network, master-slave communication, PC communication, man-machine interface communication, etc. Based on this practical application scenario, the existing devices or products on the market cannot directly meet the application requirements, and can only use freq...
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