CN204494712U - Intelligent blower energy saving control system of frequency conversion in use - Google Patents

Abstract

The intelligent fan frequency conversion energy-saving control system disclosed by the utility model includes a PLC controller, a frequency converter, a fan and a switch module, the PLC controller is connected to the switch module, and the input end of the PLC controller is connected with a first temperature sensor, a second temperature sensor, The output ends of the third temperature sensor, the air volume sensor and the negative pressure sensor are connected to the fan through the frequency converter; the first temperature sensor is installed at the fan bearing, and the second temperature sensor and the third temperature sensor are respectively arranged at the motor stator and the motor bearing. On the basis of ensuring the ventilation reliability, the utility model obtains the temperature, air volume, negative pressure and other parameters of the fan itself by means of the mutual cooperation of various sensors, and transmits the information to the PLC controller, and then adjusts the fan by the frequency converter. speed control, and ultimately achieve significant energy saving and consumption reduction effects. Compared with the known fan control system, the energy saving rate of the system operation can reach 30%.

Description

Intelligent fan frequency conversion energy saving control system

technical field

The utility model relates to a control system, in particular to an intelligent fan frequency conversion energy-saving control system.

Background technique

The computer room is usually equipped with special fans and ordinary civil fans. However, since the power supply frequency cannot be changed, the motor speed of the known fans remains basically unchanged. The indoor temperature is adjusted by constantly "on and off". It is easy to cause the room temperature to be hot and cold, and the starting current is large (3 times the operating current) to consume more power, resulting in large power consumption and high failure rate.

In the prior art, for example, the patent application number is 201120436321.8, the intelligent fan energy-saving control system discloses that temperature sensors are installed in the room of the heating equipment and on the equipment to monitor the temperature changes of the equipment and the room, so as to control the output voltage and the output voltage of the PLC inverter. frequency. Although the above-mentioned structure can control the energy-saving effect of the fan, it ignores parameters such as the temperature produced by the fan itself during operation, so that it cannot effectively achieve the best energy-saving effect.

In view of this, the inventor specially designed an intelligent fan frequency conversion energy-saving control system, and this case arose from it.

Utility model content

The purpose of the utility model is to provide an intelligent fan frequency conversion energy-saving control system to minimize energy consumption and achieve the best energy-saving effect.

In order to achieve the above object, the technical scheme of the utility model is as follows:

The intelligent fan frequency conversion energy-saving control system includes a PLC controller, a frequency converter, a fan and a switch module. The PLC controller is connected to the switch module. The input end of the PLC controller is connected to a first temperature sensor, a second temperature sensor, a third temperature sensor, The output ends of the air volume sensor and the negative pressure sensor are connected to the fan through the frequency converter; the first temperature sensor is installed at the fan bearing, and the second temperature sensor and the third temperature sensor are respectively arranged at the motor stator and the motor bearing.

The intelligent fan frequency conversion energy-saving control system also includes a parameter detection module, an alarm module and a backup fan. The input of the PLC controller is connected to the parameter detection module, and its output is respectively connected to the alarm module and the frequency converter. The frequency converter is connected to the backup fan.

The switch module includes a first switch for local or remote control and a second switch for start or stop control.

The intelligent fan frequency conversion energy-saving control system also includes a man-machine interface module connected to the input end of the PLC controller.

After adopting the above structure, the utility model has reasonable structure, ingenious design, safety and reliability. On the basis of ensuring the reliability of ventilation, the system obtains the temperature, air volume and negative pressure parameters of the fan itself by means of the mutual cooperation of various sensors, and The information is transmitted to the PLC controller, and then the frequency converter controls the speed of the fan, and finally achieves a significant effect of energy saving and consumption reduction. Compared with the known fan control system, the energy saving rate of the system operation can reach 30%.

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is a schematic diagram of the utility model.

Label description

PLC controller 1 , first temperature sensor 11 , second temperature sensor 12 , third temperature sensor 13 , air volume sensor 14 , negative pressure sensor 15 , frequency converter 2 , blower fan 3 , and switch module 4 .

Detailed ways

As shown in Figure 1, the intelligent fan frequency conversion energy-saving control system disclosed by the utility model includes a PLC controller 1, a frequency converter, a fan 3 and a switch module 4, the PLC controller 1 is connected to the switch module 4, and the switch module 4 is an existing module , the input end of PLC controller 1 is connected with the first temperature sensor 11, the second temperature sensor 12, the third temperature sensor 13, the air volume sensor 14 and the negative pressure sensor 15, and its output end is connected fan 3 through frequency converter 2; The temperature sensor 11 is installed at the fan bearing, and the second temperature sensor 12 and the third temperature sensor 13 are respectively arranged at the motor stator and the motor bearing.

In order to make the system more safe and reliable during operation, the intelligent fan frequency conversion energy-saving control system also includes a parameter detection module, an alarm module and a backup fan, and the parameter detection module and the alarm module are existing modules. The input of the PLC controller 1 The terminal is connected to the parameter detection module, the output terminal is respectively connected to the alarm module and the frequency converter 2, and the frequency converter 2 is connected to the standby fan. The parameter detection module detects the set value and the obtained parameter value. If the obtained parameter value exceeds the set value, the PLC controller 1 sends an alarm signal and starts the standby fan.

There are many kinds of switch modules 4, specifically, the switch module 4 includes a first switch for local or remote control and a second switch for start or stop control, so as to make the operation of the system more convenient and safe.

In order to further realize the intelligence of the system, the intelligent fan frequency conversion energy-saving control system of this embodiment also includes a man-machine interface module, which is connected to the input end of the PLC controller 1, and the staff only need to pass through the man-machine interface module The PLC controller 1 can be conveniently operated, and the use is simple and intuitive.

Principle of the present utility model is as follows:

When the fan 3 starts to run, each sensor transmits the input values such as motor stator temperature, motor bearing temperature, fan bearing temperature, negative pressure, and air volume to the PLC controller 1. The conversion module sends a signal to control the speed of the frequency converter 2, so that the frequency converter 2 drives the fan 3 to run at a certain speed, thereby realizing closed-loop control.

The utility model is reasonable in structure, ingenious in design, safe and reliable. On the basis of ensuring ventilation reliability, the system obtains the temperature, air volume and negative pressure parameters of the fan 3 itself by means of the mutual cooperation of various sensors, and transmits the information to The PLC controller 1, and then the frequency converter 2 controls the speed of the fan 3, and finally achieves a significant effect of energy saving and consumption reduction. Compared with the known fan control system, the energy saving rate of this system can reach 30%.

The above-mentioned embodiments and drawings do not limit the product form and style of the present utility model, and any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of the present utility model.

Claims (4)

1. The intelligent fan frequency conversion energy-saving control system is characterized in that: it includes a PLC controller, a frequency converter, a fan and a switch module, the PLC controller is connected to the switch module, and the input end of the PLC controller is connected to a first temperature sensor and a second temperature sensor , the third temperature sensor, the air volume sensor and the negative pressure sensor, the output end of which is connected to the fan through the frequency converter; the first temperature sensor is installed at the fan bearing, the second temperature sensor and the third temperature sensor are respectively arranged at the motor stator and the motor bearing . 2. The intelligent fan frequency conversion energy-saving control system as claimed in claim 1, characterized in that: it also includes a parameter detection module, an alarm module and a standby fan, the input of the PLC controller is connected to the parameter detection module, and its output is connected to the An alarm module and a frequency converter, and the frequency converter is connected to a backup fan. 3. The intelligent fan frequency conversion energy-saving control system according to claim 1, wherein the switch module includes a first switch for local or remote control and a second switch for start or stop control. 4. The intelligent fan frequency conversion energy-saving control system according to claim 1, further comprising a man-machine interface module connected to the input terminal of the PLC controller.