Ventilating control device with air pipe pressure adjusting function for CIT
A pressure regulation and control device technology, applied in heating and ventilation control system, space heating and ventilation control input, control input related to air characteristics, etc., can solve the problem of shortened service life of equipment, increased device cost, and low efficiency of ventilation system and other problems to achieve the effect of simplifying the structure, increasing the cost and improving the service life
Inactive Publication Date: 2015-04-29
ANHUI HUASHENG TECH HLDG
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Problems solved by technology
[0003] At present, in the variable air volume ventilation control device, each fume hood is equipped with a variable air volume automatic adjustment system, which increases the cost of the device a lot
In addition, most users still use the fume hood without variable air volume adjustment function, which has the disadvantages of low efficiency of the ventilation system and shortened service life of the equipment
Method used
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[0021] refer to figure 1 , A CIT ventilation control device with air duct pressure adjustment function proposed by the present invention includes: air duct 1 , air pressure sensor 2 , fan 3 , frequency converter 4 and PLC controller 5 .
[0022] The wind pressure sensor 2 is installed on the air duct 1 to detect the pressure in the air duct 1, and the fan 3 is installed on the air duct 1 to adjust the wind speed.
[0023] PLC controller 5 signal input terminals 0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7 are respectively connected with contacts F1, F2, F3, F4, F5, F6, F7, F8, and contacts F1, F2, F3, F4 , F5, F6, F7, and F8 are respectively associated with the corresponding opening and closing status of the fume hood. In this embodiment, the contacts F1, F2, F3, F4, F5, F6, F7, and F8 are fume hood interlock switches. When the fume hood is on, the corresponding contacts are connected, and when the fume hood is closed, the corresponding contacts are disconnected. Therefore, the PL...
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The invention provides a ventilating control device with an air pipe pressure adjusting function for CIT. The ventilating control device comprises an air pipe, an air pressure sensor, a fan, a frequency converter and a PLC (Programmable Logic Controller), wherein the PLC controls the fan to work through the frequency converter according to the connecting quantity of joints F1, F2, F3, F4, F5, F6, F7 and F8 and a detecting value of the air pressure sensor. In the ventilating control device with the air pipe pressure adjusting function for the CIT, a plurality of preset air pressure values respectively correspond to the opening quantity of ventilation cabinets and are increased along with the increasing of the opening quantity of ventilation cabinets, and the PLC controls the fan to speed up through the frequency converter according to the corresponding preset air pressure values so as to meet the exhausting requirements of the plurality of ventilation cabinets. The ventilating control device with the air pipe pressure adjusting function for the CIT can meet the air-speed control requirements of the plurality of ventilation cabinets, so that the control device is not specially designed for each ventilation cabinet and the cost reducing and the structure simplification are benefited. In the ventilating control device with the air pipe pressure adjusting function for the CIT, the air volume is automatically controlled, the air pipe pressure is adjusted, the ventilation efficiency is ensured and the service life of the equipment is prolonged.
Description
technical field [0001] The invention relates to the technical field of ventilation control, in particular to a CIT ventilation control device with an air duct pressure adjustment function. Background technique [0002] With the development of society, people pay more and more attention to health, one of which is reflected in clean air. As an indispensable part of the ventilation system, the fume hood is increasingly demanding. [0003] At present, in the variable air volume ventilation control device, each fume hood is equipped with a variable air volume automatic adjustment system, which increases the cost of the device a lot. In addition, most users still use fume hoods without variable air volume adjustment function, which have the disadvantages of low ventilation system efficiency and shortened equipment service life. SUMMARY OF THE INVENTION [0004] Based on the technical problems existing in the background art, the present invention proposes a CIT ventilation cont...
Claims
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Login to View More IPC IPC(8): F24F11/02
CPCF24F11/62F24F11/30F24F2110/00F24F2110/30
Inventor 盛义良葛付兵
Owner ANHUI HUASHENG TECH HLDG