Testing device for odors, VOC and floating harmful substances

A technology of harmful substances and testing devices, which is applied in the field of volatile organic compound testing equipment, can solve the problems of affecting the testing accuracy, affecting the testing accuracy, and not being able to purify the gas, so as to achieve the effect of improving the testing accuracy

Active Publication Date: 2016-11-09
北京市产品质量监督检验院 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (2) During the test, the test chamber of the detection system did not discharge the original polluted air in the test chamber in advance, causing the volatile harmful gases such as formaldehyde and VOC volatilized from the measured object to mix with the original polluted air in the test chamber, Affected the accuracy of the test;
[0006] (3) When sampling, after the exhaust one-way valve on the test cabin of the detection system is opened, the gas in the test cabin will be discharged, causing th

Method used

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  • Testing device for odors, VOC and floating harmful substances
  • Testing device for odors, VOC and floating harmful substances
  • Testing device for odors, VOC and floating harmful substances

Examples

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Embodiment 1

[0031] Please refer to figure 1 , Embodiment 1 of the present invention provides a kind of smell, VOC and floating harmful substance testing device, comprise constant temperature and / or constant humidity clean room 35, install at least one smell in described constant temperature and / or constant humidity clean room 35 , VOC test cabin 36, this smell, VOC test cabin 36 comprises cabin body 1, is provided with at least one smell sampling port 5 on cabin body 1, and cabin body 1 is connected with and is used for gas sampling process to cabin body 1 interior. Volume compensation to prevent the polluted gas outside the cabin from entering the gas compensation device in the cabin 1 due to the pressure difference. The gas compensation device is located outside the cabin 1 and also includes an external circulation filter device 30 installed outside the cabin 1. The external circulation filtering device 30 includes an external circulation pipeline 301 communicated with the interior of t...

Embodiment 2

[0051] Please refer to figure 2 , the second embodiment of the present invention provides another odor, VOC and floating harmful substances testing device, including constant temperature and / or constant humidity clean room 35, at least one of which is installed in the constant temperature and / or constant humidity clean room 35 Smell, VOC test cabin 36, this smell, VOC test cabin 36 comprises cabin body 1, and cabin body 1 is provided with at least one smell sampling mouth 5, and cabin body 1 is connected with the gas sampling process to the inside of cabin body 1. The gas volume compensation prevents the polluted gas outside the cabin from entering the gas compensation device in the cabin 1 due to the pressure difference. The odor, VOC and floating harmful substance testing device of the second embodiment of the present invention is the same as the odor, VOC and floating harmful substances of the first embodiment above. Most of the structures of the material testing devices a...

Embodiment 3

[0056] Please refer to image 3 , the third embodiment of the present invention provides another odor, VOC and floating harmful substances testing device, including constant temperature and / or constant humidity clean room 35, at least one of which is installed in the constant temperature and / or constant humidity clean room 35 Smell, VOC test cabin 36, this smell, VOC test cabin 36 comprises cabin body 1, and cabin body 1 is provided with at least one smell sampling mouth 5, and cabin body 1 is connected with the gas sampling process to the inside of cabin body 1. The gas volume compensation prevents the polluted gas outside the cabin from entering the gas compensation device in the cabin 1 due to the pressure difference. The odor, VOC and floating harmful substance testing device of the third embodiment of the present invention is the same as the odor, VOC and floating harmful substances of the first embodiment above. Most of the structures of the material testing devices are ...

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Abstract

The invention discloses a testing device for odors, VOC and floating harmful substances. The testing device comprises a constant temperature and/or constant humidity cleaning room, and at least one odor and VOC testing bin installed in the constant temperature and/or constant humidity cleaning room. Each odor and VOC testing bin comprises a bin body provided with at least one odor sampling port, wherein the bin body is connected with a gas compensation device which is used for carrying out gas volume compensation on the interior of the bin body in the gas sampling process to prevent pollution gas outside the bin body from entering the bin body due to a gas pressure difference, the gas compensation device is installed inside or outside the bin body, or is provided with a large opening to be fixed to the wall of the bin body in a sealed mode, and each odor and VOC testing bin further comprises an external circulation and filtering device arranged outside the bin body. The bin bodies can sample gas under gas exchange/sealing conditions, the release amount of formaldehyde, VOC and other volatile harmful gas volatilized in a tested object can be detected, and the interference influence on a testing result by the environment factor or other uncertain factors can be avoided, so that stability and testing precision are high.

Description

technical field [0001] The present invention relates to the technical field of testing equipment for volatile organic compounds, and more specifically relates to a testing device for odor, VOC and floating harmful substances, which is used for evaluating and testing odor, VOC and other floating harmful substances. Background technique [0002] Formaldehyde, volatile organic compounds (VOC) and other volatile harmful gases that exist in existing materials such as furniture and automotive supplies will cause harm to the human body if the concentration of volatile harmful gases exceeds a certain range. Reasonable collection of formaldehyde, VOC and other volatile harmful gases in mattresses is one of the important links of detection technology. [0003] At present, there are many systems for sampling and detecting volatile harmful gases such as formaldehyde and VOC in the industry, but the existing detection systems have the following shortcomings: [0004] (1) The detection s...

Claims

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Application Information

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IPC IPC(8): G01N33/00
CPCG01N33/0011
Inventor 夏可瑜彭永伦霍任锋赵继波姬楠李俊贤聂小辉
Owner 北京市产品质量监督检验院
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