Protection effect test chamber of mask and test method

An effect test and chamber technology, applied in measuring devices, suspension and porous material analysis, scientific instruments, etc., can solve problems such as inability to quickly evaluate product performance, lack of suitable test devices for masks, and long test cycles. Achieve the effect of simple structure, convenient operation and good simulation effect

Inactive Publication Date: 2016-10-12
GUANGZHOU FIBER PROD TESTING & RES INST
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  • Abstract
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Problems solved by technology

[0003] At present, there is no suitable test device for the protective effect test of masks, and the test cycle is long, which cannot quickly evaluate product performance.

Method used

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  • Protection effect test chamber of mask and test method

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Embodiment Construction

[0021] refer to figure 1 As shown, the protective effect test chamber of a kind of mouth mask of the present invention comprises the airtight chamber 1 with observation window 5, is provided with headform breathing simulator 2 in described airtight chamber 1, breathes in headform A first dust sensor 3 is provided outside the exhalation port of the simulator 2, and a second dust sensor 4 is provided inside the exhalation port of the headform breathing simulator 2, and the first dust sensor 3 and the second dust sensor 4 are respectively The dust concentration meter 6 arranged outside the closed chamber 1 is connected; the closed chamber 1 is also connected with an air intake pipe 7 which imitates the test environment gas and an exhaust pipe 8 which excludes the simulated test environment gas. The observation window 5 in this embodiment enables the operator to directly observe the working state of the headform respirator simulator 2 .

[0022] Described inlet pipe 7 is connecte...

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Abstract

The invention discloses a protective effect test chamber and a test method of a mask, aiming to provide a protective effect test device for a mask with convenient operation, good simulation effect and fast test evaluation. The closed compartment of the window is equipped with a headform breathing simulator in the closed compartment, a first dust sensor is arranged outside the exhalation port of the headform breathing simulator, and a first dust sensor is arranged inside the exhalation port of the headform breathing simulator. There is a second dust sensor, and the first dust sensor and the second dust sensor are respectively connected to the dust concentration meter arranged outside the closed chamber; The exhaust pipe imitates the test environment gas; the test method includes installing samples, starting the test, collecting data, calculating and processing, and printing the test results; the invention is used for the protective effect test of the mask.

Description

technical field [0001] The present invention relates to a kind of test device, more specifically, it relates to a protective effect test chamber of a mask, and the invention also relates to a test method using the test chamber. Background technique [0002] The filtration efficiency and tightness (or leakage rate) of a mask are important indicators for evaluating its protective performance. Filtration efficiency refers to the percentage of particulate matter in the air filtered by the mask under specified conditions; tightness refers to the degree of closeness between the periphery of the mask and the face of the specific user. Filtration efficiency and tightness are independent test items, and neither one of them can reflect the overall protective ability of the mask. Masks with high filtration efficiency and low tightness, or low filtration efficiency and high tightness are not very good. Good protection performance. The protective effect of a mask refers to the ability ...

Claims

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Application Information

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IPC IPC(8): G01N15/08
CPCG01N15/08
Inventor 张鹏王向钦陆树兴朱锐钿倪冰选漆东岳
Owner GUANGZHOU FIBER PROD TESTING & RES INST
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