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Fume hood used for lab

A laboratory and fume hood technology, applied in the field of fume hoods, can solve the problems of uneven wind speed on the work surface, excessive wind speed on the work surface, and incomplete absorption of harmful gases, and achieve the effect of avoiding rapid up and down movement and uniform wind speed.

Inactive Publication Date: 2014-03-12
SUZHOU YIDA PURIFICATION LAB EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing fume hoods are provided with an air outlet on the top of the cabinet, and a fan is installed on the top. Since the air outlet is far away from the work surface, if the harmful gas is to be completely removed, the wind speed of the fan is relatively large, which will make the work surface The wind speed exceeds the standard. In addition, due to the rapid up and down movement of gas molecules, turbulent flow will be formed, resulting in uneven wind speed on the work surface and incomplete removal of harmful gases.

Method used

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  • Fume hood used for lab

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Embodiment Construction

[0017] The present invention will now be further described in detail in conjunction with the accompanying drawings and embodiments. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, so it only shows the composition related to the present invention.

[0018] Such as figure 1 As shown, a fume hood for a laboratory comprises a cabinet body, the cabinet body includes an upper cabinet 11 and a lower cabinet 13 with a work surface 12, the top of the upper cabinet 11 is provided with an air outlet 16, and the upper cabinet 11 is close to the air outlet Fan 20 is provided at 16 places; each side of upper cabinet 11 and lower cabinet 13 is connected by support plate 14; The narrower end of the flow pipe 30 is connected with a mesh laminate 40, the wider end of the flow pipe 30 is flush with the lower end of the upper cabinet 11, and the diameter of the wider end of the flow pipe 30 is the same as ...

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Abstract

The invention relates to a fume hood used for a lab. The fume hood comprises a hood body, a fan is arranged in the top of the hood body, the hood body comprises an upper hood and a lower hood with a working table top, one side edge of the upper hood and one side edge of the lower hood are connected through a supporting plate, a tapered wide-end-down flow guiding pipe is arranged in the upper hood and is directed at the lower hood, the narrow end of the flow guiding pipe is connected with a net-shaped laminate panel, and a filter net is arranged between the laminate panel and the fan. According to the fume hood used for the lab, the tapered wide-end-down flow guiding pipe is arranged in the upper hood, in this way, harmful gases can ascend spirally in the flow guiding pipe and are prevented from rapidly moving up and down, the turbulence conditions can not happen, the harmful gases can be removed through absorption completely, and even air speed on the working table top is ensured.

Description

technical field [0001] The invention relates to laboratory equipment, in particular to a laboratory fume hood. Background technique [0002] The fume hood is a kind of local exhaust equipment commonly used in the laboratory. The fume hood can completely and timely discharge the harmful gas from the workplace, and can prevent the operator from inhaling toxic, harmful and odorous gas, which has played a very good role in the operation of the operator. Protective effects. The fume hood is usually provided with a work surface, and the operator performs experiments on the work surface, and the fan on the top of the fume hood discharges the harmful gas. Existing fume hoods are provided with an air outlet on the top of the cabinet, and a fan is installed on the top. Since the air outlet is far away from the work surface, if the harmful gas is to be completely removed, the wind speed of the fan is relatively large, which will make the work surface The wind speed exceeds the st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B08B15/02A61L9/20B01D46/10
CPCB08B15/023A61L9/20B01D46/10
Inventor 周树雄
Owner SUZHOU YIDA PURIFICATION LAB EQUIP
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