Laboratory ventilation system

Abstract

The invention discloses a laboratory ventilation system. The system comprises a laboratory, an collecting device, a control device and an adjusting device, wherein the collecting device is arranged inthe center of the laboratory, the collecting device comprises a temperature sensor, a humidity sensor, an air volume sensor and a smoke sensor; the control device comprises a processor and a memorizer, the adjusting device comprises two air suction fans and two air supplementing fans, air hose is laid on the periphery of the inner wall of the laboratory, and four through holes are formed in the air hose; air inlets of the two air supplementing fans are correspondingly connected with a second through hole and a fourth through hole of the air hose, and air inlet ends of the two suction fans arecorrespondingly connected with a first through hole and a third through hole of the air hose; and two air ducts are further connected with the air hose, one ends of the air ducts penetrate through the inner wall of the laboratory and are connected with the air hose. Compared with the prior art, reasonable air supplement or air suction is carried out according to air volume of the laboratory, andheating or refrigerating the mixed air at a required temperature before the mixed air enters the laboratory, so that pressure balance and temperature stability are achieved in the laboratory, and therequirements of the laboratory environment are met.

Description

technical field [0001] The invention relates to the technical field of laboratory equipment, in particular to a laboratory ventilation system. Background technique [0002] At present, due to the large amount of exhaust air in large laboratories, there are problems of excessive indoor negative pressure and poor temperature control. Due to the large number of fume hoods and other exhaust equipment in the laboratory, the indoor negative pressure is relatively large. Some laboratories have no The air supply device or the volume of supplementary air is not enough, and the wind can only enter the room from the gaps such as the door and the window, resulting in excessive indoor negative pressure, which makes it difficult to open the door and window indoors; and the traditional indoor constant temperature is controlled by air conditioning heating or cooling. The required temperature is reached, but in winter, because the fume hood directly discharges the indoor hot air, and the sup...

AI Technical Summary

Problems solved by technology

[0002] At present, due to the large amount of exhaust air in large laboratories, there are problems of excessive indoor negative pressure and poor temperature control. Due to the large number of fume hoods and other exhaust equipment in the laboratory, the indoor negative pressure is relatively large. Some laboratories have no The air supply device or the volume of supplementary air is not enough, and the wind can only enter the room from the gaps such as the door and the window, resulting in excessive indoor negative pressure, which makes it difficult to open the door and window indoors; and the traditional indoor constant temperature is controlled by air conditioning heating or cooling. The required temperature is reached, but in winter, because the fume hood directly discharges the indoor hot air, and the supplementary air system has no heating device, the temperature of the supplementary air into the room is very low, resulting in uncontrollable indoor temperature and a waste of air conditioning. Energy; vice versa in summer; secondly, traditional laboratory supplementary air is a fixed power supplementary air supply, which does not make reasonable supplementary air for the exhaust air volume of each room and does not make reasonable use of the return air of some rooms for circulating supplementary air, for example, when a certain room After the equipment in the room is closed, the air volume is still supplemented according to the original air volume, which makes the indoor positive pressure too large, which is not conducive to the discharge of toxic and harmful substances. In addition, in winter, as long as there are gaps in the entire company, the air will enter, which is harmful to personnel and equipment. There are adverse effects, and the effect of air conditioning is wasted. In view of the lack of fresh air purification devices in the current supplementary air equipment, the supplementary fresh air and return air cannot guarantee to meet the occupational exposure limit and indoor air requirements.

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