DRAFT CHAMBER

PROBLEM TO BE SOLVED: To provide a draft chamber capable of preventing leakage of a harmful gas or the like into a room, suppressing the room from becoming a negative pressure and reducing the energy loss in the air control and further realizing comfortable working environment. SOLUTION: The draft c...

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Bibliographische Detailangaben
1. Verfasser:	SHIODA KATSUYUKI
Format:	Patent
Sprache:	eng
Schlagworte:	AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING BLASTING CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE HEATING LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL RANGES TRANSPORTING VENTILATING WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a draft chamber capable of preventing leakage of a harmful gas or the like into a room, suppressing the room from becoming a negative pressure and reducing the energy loss in the air control and further realizing comfortable working environment. SOLUTION: The draft chamber has an opening and shutting door 3 disposed at the front face, an intake duct 4 for sucking a gas in the chamber 1 and a ventilation port 7 which has louvers 6 (members for resisting to ventilation) and is disposed at the surface of a sidewall. Further, the ventilation port 7 is allowed to communicate with the outside through a space 9 in the ceiling of a room 12 and a ventilation duct 10 so that the open air is sucked into the chamber 1 through the ventilation port 7.