Title:
GAS CONCENTRATION MEASUREMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/051279
Kind Code:
A1
Abstract:
A gas concentration measurement device, comprising a housing, a circuit board assembly and a waterproof and gas-permeable film. The gas concentration measurement device has an inner cavity, in which at least part of the circuit board assembly is located. The circuit board assembly comprises a circuit board and a gas sensor, the gas sensor being mounted on the circuit board. The housing comprises an outer surface and an inner surface, which is closer to the inner cavity than the outer surface. The housing has a vent hole penetrating the inner surface and the outer surface, the waterproof and gas-permeable film is arranged on an inner-surface side of the housing, and at least part of the waterproof and gas-permeable film is located between the vent hole and the inner cavity. The gas concentration measurement device further comprises a support, at least part of the support is located in the inner cavity, the support fits with the housing, the waterproof and gas-permeable film is attached to the inner surface of the housing, and at least part of the waterproof and gas-permeable film is clamped between the support and the inner surface of the housing, which reduces the risk of the waterproof and gas-permeable film falling off, thereby prolonging the service life of the gas concentration measurement device.
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Inventors:
HUANG LONGZHONG (CN)
WAN XIA (CN)
CHEN WENQING (CN)
ZHANG JIAJUN (CN)
JIN QIHONG (CN)
HUANG LINJIE (CN)
WAN XIA (CN)
CHEN WENQING (CN)
ZHANG JIAJUN (CN)
JIN QIHONG (CN)
HUANG LINJIE (CN)
Application Number:
PCT/CN2022/119227
Publication Date:
April 06, 2023
Filing Date:
September 16, 2022
Export Citation:
Assignee:
HANGZHOU SANHUA RES INST CO LTD (CN)
International Classes:
G01N33/00
Foreign References:
| CN111505218A | 2020-08-07 | |||
| CN212949502U | 2021-04-13 | |||
| CN108918782A | 2018-11-30 | |||
| CN108279197A | 2018-07-13 | |||
| CN1905338A | 2007-01-31 | |||
| CN204086116U | 2015-01-07 | |||
| US20180195987A1 | 2018-07-12 |
Attorney, Agent or Firm:
SUZHOU JIABO INTELLECTUAL PROPERTY AGENCY (CN)
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