A mechanical air supply and exhaust integrated vav fume hood

Abstract

The present invention relates to the field of ventilation equipment, in particular to a mechanical air supply and exhaust integrated VAV fume hood, which includes a cabinet body, a chamber is arranged inside the cabinet body, and one side of the cabinet body is provided with a The cabinet door moves up and down in the direction, and the cabinet body is equipped with a waste gas treatment device. The waste treatment device includes an exhaust pipe and an air intake pipe connected to the chamber inside the cabinet body. The end of the exhaust pipe and air intake pipe away from the cabinet body extends to Outdoors, there are control valves for controlling the air volume inside the exhaust pipe and the air intake pipe, fans are installed on the exhaust pipe and the air intake pipe, and a heat exchange plate is installed between the exhaust pipe and the air intake pipe. There is a control device for monitoring the wind speed inside the intake pipe and exhaust pipe, and controlling the fan, which reduces the waste of resources, facilitates the experimenters to conduct experiments, and ensures the air quality inside the laboratory.

Description

technical field [0001] The invention relates to the field of ventilation equipment, in particular to a mechanical air supply and exhaust integrated VAV fume hood. Background technique [0002] At present, some harmful gases are often produced during the internal experiments of some chemical laboratories. If they cannot be discharged outdoors and processed in time, the health of the experimenters will be affected. [0003] Existing publication number is that the Chinese invention patent of CN105921479A discloses a kind of fume hood, comprises left side plate, right side plate, exhaust fan, baffle plate, storage box, workbench, glass door and deflector, left side plate and the right side board are respectively installed at both ends of the workbench, the baffle is installed between the left side board and the right side board, the two sides of the baffle are respectively equipped with glass doors and deflectors, and the suction end of the exhaust fan extends into the In the c...

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Problems solved by technology

[0004] The above-mentioned prior art scheme has the following defects: in the process of conducting experiments in winter, the experimenters need to heat the room to keep the room at a suitable temperature, but when using the existing fume hood in the laboratory, the fume hood will keep the internal After the harmful gas in the chamber is discharged to the outside, the air pressure inside the chamber will decrease, the air with a higher temperature outside the fume hood inside the laboratory will enter the chamber, and the cold air with a lower temperature outside the laboratory will enter into the chamber. Inside the laboratory, if the fume hood continues to work, the air with a higher temperature inside the fume hood chamber will be discharged to the outside together with harmful gases, which will make the temperature inside the laboratory lower and affect the normal work of the experimenters. At the same time, because the indoor temperature drops, the heating equipment needs to work continuously, which will cause a serious waste of resources

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