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Spent gas cycle use ventilation cabinet

A technology of exhaust gas circulation and fume hood, applied in the field of fume hood, can solve the problems of inability to adjust temperature, large air flow, and inability to use air conditioner to cool down, etc., and achieves the effect of small air environment and temperature, improved working environment and simple structure

Inactive Publication Date: 2004-09-29
陆建国
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  • Summary
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large amount of air circulation, the physical and chemical laboratories cannot use air conditioners to cool down in the south in midsummer, and cannot use radiators to heat in the north in midwinter. The temperature in the laboratory cannot be adjusted, and the working environment cannot be improved.

Method used

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  • Spent gas cycle use ventilation cabinet
  • Spent gas cycle use ventilation cabinet
  • Spent gas cycle use ventilation cabinet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: Bottom type

[0026] refer to Figure 1 to Figure 7 . Front upper board 12 of the present invention, top board 15, right side board 27, left side board 30, lower cabinet left side board 34, lower cabinet right side board 25, rear board 23 have constituted fume hood cabinet skeleton; It is the working area of ​​the fume hood for holding experimental instruments; the filter box is placed in the lower part of the cabinet, and the circulation fan 16 is placed in the upper part of the cabinet. The box wall of the filter box is composed of inner and outer box panels 3, 2 and the insulation material 1 sandwiched therein. There are air inlets or air outlets on the box walls at the upper and lower ends of the filter box, and multi-layer filter adsorption is arranged in the filter box. Material 4, a heating element 5 is arranged between two adjacent layers of adsorption material 4, and a switch plate 6 that can respectively open and close the air inlet and the air...

Embodiment 2

[0029] Embodiment 2: top mounted

[0030] The filter box of the present embodiment is placed in the upper part of the cabinet, and the circulation fan 16 is placed in the lower part of the cabinet. All the other structures are the same as in Example 1.

Embodiment 3

[0031] Embodiment 3: external

[0032] The filter box of this embodiment is placed outside the cabinet, and the circulation fan is placed at the upper or lower part of the cabinet. The filter box is connected with the cabinet body and the circulation fan by pipes. All the other structures are the same as in Example 1.

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Abstract

A ventilation cabinet for cyclically using waste gas in laboratory is composed of a sealed cabinet body, a circulating blower, and a filter at the gas outlet of the said circulating blower. It also has a transparent front panel with hand holes and working gloves mounted in the holes. Its advantages are simple structure and little influence to the ambient air and temp..

Description

technical field [0001] The invention relates to a fume hood used in a physical and chemical laboratory, in particular to a fume hood for waste gas circulation, which belongs to laboratory equipment. Background technique [0002] Physical and chemical experiments often produce some harmful gases. In order to avoid harm to human body and equipment, people usually use a fume hood equipped with a fan to pump the harmful gases to the outside. Due to the large amount of air circulation, the physical and chemical laboratories cannot use air conditioners to cool down in the south in midsummer, and cannot use radiators to heat in the north in midwinter. The temperature in the laboratory cannot be adjusted, and the working environment cannot be improved. Contents of the invention [0003] The purpose of the present invention is in order to solve the deficiency that the above-mentioned background technology exists, proposes a kind of exhaust gas recycling fume hood that can greatly r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01L1/00
Inventor 陆建国
Owner 陆建国
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