Security exhaust device

An exhaust device and a safe technology, applied in the field of ventilation systems, can solve problems such as inability to reflect reality, and achieve the effect of improving safety and accuracy and enhancing safety
CN101149175AActive Publication Date: 2008-03-26CHINA ACAD OF BUILDING RES
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA ACAD OF BUILDING RES
Publication Date
2008-03-26

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Abstract

This invention relates to a safe air exhausting device. It includes air outlet opening casing, air exhausting filter, air absorbing filter, scanning device and cover for anti-poisoning. The said air exhausting filter is arranged in the air outlet opening casing. Its end face has double-faced sealing adhesive tape. Positive pressure cavity is formed between the said air outlet opening casing and air exhausting filter. The air outlet opening casing is arranged with positive pressure tap. The said air absorbing filter is arranged at the external side of the air inlet opening of ventilation system. Its outlet opening communicates to the said air inlet opening. The outlet opening of air absorbing filter connects to the said positive pressure tap and communicates to the positive cavity through air absorbing hose. The scanning device is at the posterior wall of air outlet opening casing and detects the air exhausting filter. Thus, this invention fulfills non-leaking air exhaustion and detection through air exhaustion.
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Description

technical field

[0001] The invention relates to a ventilation system, in particular to a safe exhaust device, which is suitable for the non-leakage safe exhaust of aerosols that may be polluted by harmful biological factors. Background technique

[0002] Taking the biosafety laboratory as an example, GB50346-2004 "Biosafety Laboratory Building Technical Specifications" requires that the high-efficiency filter be installed on the exhaust (return) air outlet of the maintenance structure of the biosafety laboratory, and its original intention is to limit the scope of pollution to In the minimum range, to prevent indoor pathogenic microorganisms from entering the system (including pipelines and units) to expand the scope of pollution. Since the high-efficiency filter is responsible for preventing the leakage of pathogenic microorganisms to the outside, if there is a slight leakage, the pathogenic bacteria may escape, and the consequences will be disastrous.

[0003] Therefore, ...

Claims

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