Title:
EVAPORATION SEALED CHAMBER FOR DETECTING HARMFUL SUBSTANCES
Document Type and Number:
WIPO Patent Application WO/2020/000574
Kind Code:
A1
Abstract:
An evaporation sealed chamber for detecting harmful substances, comprising a sealed chamber (1), a porous plate (6), a pressing plate (7), a driving device (8) and an elastic membrane (9); the porous plate (6) is installed on any one or more surfaces of the sealed chamber (1), the elastic membrane (9) is disposed on the outer side surface of the corresponding porous plate (6), the pressing plate (7) is disposed on the outer side surface of the corresponding elastic membrane (9), and the driving device (8) is in transmission connection with the corresponding pressing plate (7) so as to drive the pressing plate (7) to move forwards and backwards to press the elastic membrane (9) to be in contact with the porous plate (6). The evaporation sealed chamber is simple in structure; by means of providing an elastic membrane (9) that expands along with the increase of the temperature in the sealed chamber (1) and contracts along with the decrease of the temperature, the gas in the sealed chamber (1) can be compensated in a timely manner; and the porous plate (6) is provided to effectively prevent harmful substances from remaining on a gas compensation device (5) and affecting test accuracy; in addition, the effects of the external environment or other uncertain factors on the detection result are effectively avoided, and the detection precision is thus improved.
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Inventors:
XIA KEYU (CN)
Application Number:
PCT/CN2018/098218
Publication Date:
January 02, 2020
Filing Date:
August 02, 2018
Export Citation:
Assignee:
DONGGUAN CITY SIMPLEWELL TECH CO LTD (CN)
International Classes:
B01L1/00; G01N33/00
Foreign References:
| CN108152451A | 2018-06-12 | |||
| CN206074564U | 2017-04-05 | |||
| CN205982221U | 2017-02-22 | |||
| CN106226483A | 2016-12-14 | |||
| DE2102439A1 | 1972-08-03 |
Other References:
See also references of EP 3633368A4
Attorney, Agent or Firm:
GUANGZHOU HUAXUE INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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