A laboratory fume hood

Abstract

The invention discloses a fume hood of a laboratory. The fume hood of the laboratory comprises a body, a door, display equipment and a control device, wherein an air outlet is formed in the body; a first sensor for detecting whether the door is closed or not is arranged on the door; the air outlet is provided with a filter device; an exhaust fan is arranged in the body; the exhaust intensity of the exhaust fan is represented by a first exhaust gear, a second exhaust gear and a third exhaust gear; a temperature sensor for detecting the temperature in the body is arranged in the body; the display equipment comprises a flasher and a starting button; the display equipment is in communication connection with the control device; the control device is in communication connection with the first sensor, the temperature sensor and the exhaust fan; after receiving starting button pressing information, the control device acquires a detecting value of the first sensor; if the detecting value shows that the door is not closed, the control device controls the flasher on the display equipment to flash by commands; if the detecting value shows that the door is closed, the control device controls gears of the exhaust fan to be switched by commands so as to inspect the working state of the exhaust fan.

Description

technical field [0001] The invention relates to the technical field of laboratory equipment, in particular to a laboratory fume hood. Background technique [0002] The laboratory fume hood is an important part of the laboratory. Some chemical experiments require the use of volatile reagents, some chemical experiments will produce harmful gases or liquids, some experiments are more polluting, etc., which requires a device that can separate the experimental work area from the external environment. To protect the safety of experimenters. However, in the actual operation process, it may occur that the fume hood is not completely closed and the experimenter does not notice it and continues to carry out the experiment operation. This situation will not only affect the safety of the experimenter, but also affect the safety of the experimenter. The surrounding air quality will be affected; since the fume hood needs to be continuously ventilated and the gas discharged from the cabi...

AI Technical Summary

Problems solved by technology

Some chemical experiments need to use volatile reagents, some chemical experiments will produce harmful gases or liquids, some experiments are more polluting, etc., which requires a device that can separate the experimental work area from the external environment. To protect the safety of experimenters

However, in the actual operation process, there may be situations where the fume hood is not completely closed and the experimenter is not aware of it and continues the experiment operation. This situation will not only affect the safety of the experimenter, but also affect the safety of the experimenter. The surrounding air quality is affected; since the fume hood needs continuous ventilation and the gas discharged from the cabinet needs to be filtered, the working conditions of the exhaust equipment and filtering equipment in the fume hood are high. If the exhaust equipment If there is an obstacle in the working process of the filter and filter equipment and it is not discovered in time, it will also affect the safety of the operator and the quality of the surrounding air; when chemical experiments are carried out in the fume hood, there may be high experimental temperatures. explosion or fire, so it is also necessary to monitor the temperature in the fume hood

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