Title:
FUME HOOD AND FIRE-EXTINGUISHING METHOD
Document Type and Number:
WIPO Patent Application WO/2023/092877
Kind Code:
A1
Abstract:
A fume hood, comprising a hood body (10) having an inner cavity, wherein the inner cavity constitutes a working cavity (11); a window (20) arranged on a front wall (101) of the hood body, wherein the window can move upwards or downwards in a height direction of the hood body; an exhaust system used for making air entering the working cavity be exhausted from the working cavity; a fire-extinguishing sensor arranged on a cavity wall of the working cavity; a fire-extinguishing device (40) used for storing a fire-extinguishing agent and arranged outside the working cavity; and a nozzle (50) arranged on the cavity wall of the working cavity and connected to the fire-extinguishing device. When the fire-extinguishing sensor detects that there is a fire source in the working cavity, the nozzle can inject the fire-extinguishing agent into the working cavity, the window moves downwards in the height direction of the hood body and closes, and the exhaust system is in a working state, such that the working cavity is in a negative pressure state, in order to implement fire extinguishing under a negative pressure. Further provided is a fire-extinguishing method.
Inventors:
LU BINGLI (CN)
RUAN HONGZHENG (CN)
RUAN HONGZHENG (CN)
Application Number:
PCT/CN2022/077667
Publication Date:
June 01, 2023
Filing Date:
February 24, 2022
Export Citation:
Assignee:
E3 GREEN TECH CO LTD (CN)
International Classes:
B08B15/02; A62C31/00
Foreign References:
| CN113975694A | 2022-01-28 | |||
| CN216703245U | 2022-06-10 | |||
| CN213256188U | 2021-05-25 | |||
| CN214260414U | 2021-09-24 | |||
| CN214600937U | 2021-11-05 | |||
| CN211359986U | 2020-08-28 | |||
| CN213134421U | 2021-05-07 | |||
| CN209773014U | 2019-12-13 | |||
| EP1849521A1 | 2007-10-31 | |||
| US20070105494A1 | 2007-05-10 |
Attorney, Agent or Firm:
WATSON & BAND INTELLECTUAL PROPERTY AGENT LTD. (CN)
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