VOC (volatile organic compound) performance testing device for automotive trim electrical element under dynamic working condition

Abstract

The utility model relates to a VOC (volatile organic compound) performance testing device for an automotive trim electrical element under a dynamic working condition, which comprises an environmental chamber, a main sampling bag arranged in the environmental chamber, a main air pipe communicated with the main sampling bag, and two auxiliary sampling bags communicated with the main sampling bag through the main air pipe, the main sampling pump is used for filling gas in the main sampling bag into the auxiliary sampling bag through a main gas pipe, the auxiliary sampling bag is provided with a gas sampling interface and an anti-gas leakage terminal joint, and the main sampling bag is used for placing automotive upholstery or a standard solution so as to be used for manufacturing a standard gas atmosphere in an electrical element working environment; one auxiliary sampling bag is used as an experimental group air bag for placing a started electrical element, and the other auxiliary sampling bag is used for placing an unstarted electrical element; the device has the advantages of simulating and verifying the contribution, monitoring or purification effect of the electrical element on the VOC in the indoor air of the automobile in a power-on working dynamic mode, and accurately evaluating the actual influence of the electrical element on the indoor air quality of the automobile.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile, especially relate to a kind of VOC performance testing device for verifying the dynamic working condition of automobile interior electrical components. BACKGROUND

[0002] With the development of automobile industry and the continuous improvement of people's understanding of the health level of automobile interior, automobile indoor air quality is more and more concerned, and some elements with automobile indoor air quality purification and monitoring function emerge as the times require, and the detection scene of automobile indoor air quality is not only limited to static non-working condition, but also more hopes to detect the air quality level under working condition. Automobile interior electrical components can release volatile organic compounds (VOC) from raw materials, which may have adverse effects on human health and environment. At the same time, the emission behavior of automobile indoor air under the working condition of electrical components is completely different from that of static mode, but the current automobile industry mainly detects the emission behavior of vehicle indoor air quality and components under static non-working condition. Therefore, how to accurately evaluate and verify the contribution or purification effect of automobile interior electrical components on VOC under working condition has become an important topic in the field of automobile interior design and environmental science.

[0003] In the prior art, static test method is usually used to evaluate the VOC performance of automobile interior electrical components. This test method mainly places electrical components in a sealed container and detects the change of VOC concentration in the container by chemical analysis method. However, this static test method only detects the VOC contribution caused by the emission behavior of component materials, and cannot simulate the dynamic mode of electrical components under actual working condition, so it cannot comprehensively and accurately evaluate the actual influence of electrical components on automobile indoor air quality. UTILITY MODEL CONTENT

[0004] In view of the above problems, the purpose of the utility model is to provide a VOC performance testing device for verifying the dynamic working condition of automobile interior electrical components, for verifying the VOC of automobile interior electrical components under dynamic working condition, to overcome the shortcomings of the above prior art.

[0005] The utility model provides a kind of for verifying the VOC performance testing device of automobile interior electrical component dynamic working condition, comprising: closed environment cabin, main sampling bag placed in environment cabin, main gas pipe being communicated with main sampling bag, and two vice sampling bags being communicated with main gas pipe by main gas pipe, the main sampling pump is installed on the position between main sampling bag and two vice sampling bags of main gas pipe, the main sampling pump is used to fill the gas in main sampling bag into vice sampling bag by main gas pipe, gas sampling interface and leakage-proof terminal connector are opened on the vice sampling bag, one of which is placed in the experimental group gas bag inside starting electrical component, and electrical component is connected with power supply by leakage-proof terminal connector, another vice sampling bag is placed in the control group inside unstarting electrical component, vice sampling bag can also not be connected with main sampling bag and independently used.

[0006] As the preferred of the utility model, one end of two main gas pipes is communicated with main sampling bag, the other end of two main gas pipes is communicated with vice sampling bag, main sampling pump is installed on two main gas pipes, and main sampling pump is used for gas flow and total gas volume control.

[0007] As the preferred of the utility model, main sampling bag is placed in environment cabin, and after environmental storage treatment, the gas in main sampling bag is guided into two vice sampling bags located outside environment cabin by main gas pipe.

[0008] As the preferred of the utility model, after vice sampling bag is guided into main sampling bag, it is connected with vice gas pipe and gas sampling pipe under the set environmental condition under dynamic working condition for a set time, vice sampling pump is installed on vice gas pipe, vice sampling pump is used for guiding the gas in vice sampling bag into sampling pipe by vice gas pipe, and gas sampling pipe includes Tenax type physical adsorption sampling pipe and DNPH type chemical reaction adsorption sampling pipe.

[0009] The utility model has the advantages that:

[0010] 1、The utility model can simulate and verify the contribution or purification effect of electrical component on VOC in automobile indoor air under dynamic mode of power-on working.

[0011] 2、The utility model can not only be used for verifying the VOC performance of electrical component, but also can be used for evaluating the VOC performance of other interior materials and parts, and has wide application range.

[0012] 3、The utility model is pollution-free to environment in use process, and conforms to the current environmental protection development trend.

[0013] 4、The utility model discloses in the field of application such as interior decoration design of car, chemical analysis and detection technology field and environmental science field can have extensive application. First, in the field of interior decoration design of car, can provide a brand -new evaluation and verify the mode of the contribution or purification effect of electrical element in the working condition of interior decoration of car to VOC. Through simulating and verifying the contribution or purification effect of electrical element to VOC in the dynamic mode of power -on work, designer can more accurately evaluate and verify the influence of the working performance of electrical element in interior decoration of car to the indoor air quality of car, thereby optimizing interior decoration design of car, improve the indoor air quality of car, satisfy the continuous improvement of people to the environment requirement of interior decoration of car. Secondly, in the field of chemical analysis and detection technology, can provide a new chemical analysis and detection technology. Through simulating and verifying the contribution or purification effect of electrical element to VOC in the dynamic mode of power -on work, chemical analysis and detection personnel can more accurately detect and evaluate the contribution or purification effect of electrical element in the working condition to VOC, thereby improve the accuracy and reliability of chemical analysis and detection. Finally, in the field of environmental science, can provide a new environmental science research tool. Through simulating and verifying the contribution or purification effect of electrical element to VOC in the dynamic mode of power -on work, environmental scientists can more deeply study the contribution or purification effect of electrical element in the working condition to VOC, thereby provide more powerful support for environmental protection and sustainable development. BRIEF DESCRIPTION OF DRAWINGS

[0014] Other objects and results of the present utility model will be more apparent and easy to understand by referring to the following description in conjunction with the accompanying drawings, and with the more comprehensive understanding of the present utility model. In the drawings:

[0015] Fig. 1 It is the whole structure schematic diagram of this embodiment 1.

[0016] Fig. 2 It is the schematic diagram of vice sampling bag in experimental group and reference group of this embodiment 1.

[0017] Fig. 3 It is the schematic diagram of vice sampling bag of this embodiment 1.

[0018] The reference signs in it include: environmental cabin 1, main sampling bag 2, main gas pipe 3, vice sampling bag 4, main sampling pump 5, gas sampling interface 6, air leakage prevention terminal connector 7, electrical element 8, vice gas pipe 9, vice sampling pump 10. DETAILED DESCRIPTION

[0019] Reference Figs. 1-3As shown, the embodiment provides a VOC performance testing device for verifying dynamic working conditions of automotive interior electrical components, which comprises a closed environment cabin 1, a main sampling bag 2 placed in the environment cabin 1, two main gas pipes 3 connected with the main sampling bag 2, and two auxiliary sampling bags 4 connected with the main sampling bag 2 through the two main gas pipes 3. The main gas pipes 3 are installed with a main sampling pump 5 at a position between the main sampling bag 2 and the two auxiliary sampling bags 4. The main sampling pump 5 is used to fill the auxiliary sampling bags 4 with the gas in the main sampling bag 2 through the main gas pipes 3. The auxiliary sampling bags 4 are provided with a gas sampling interface 6 and a gas leakage prevention terminal connector 7. The gas leakage prevention terminal connector 7 is used to connect with an external power supply. One of the auxiliary sampling bags 4 is used as an experimental group gas bag and placed with an activated electrical component 8 inside. The electrical component 8 is connected with the power supply through the gas leakage prevention terminal connector 7. The other auxiliary sampling bag 4 is used as a control group and placed with an unactivated electrical component inside. The auxiliary sampling bags 4 are connected with a sampling pipe through an auxiliary gas pipe 9. The auxiliary gas pipe 9 is installed with an auxiliary sampling pump 10. The auxiliary sampling pump 10 is used to transport the gas in the auxiliary sampling bags 4 to the sampling pipe through the auxiliary gas pipe 9.

[0020] Further, the main sampling bag 2 placed in the environment cabin 1 is connected with the two auxiliary sampling bags 4 outside the environment cabin 1 through the main gas pipes 3.

[0021] Working process: simulate the dynamic working condition of the automobile seat ventilation fan, select 2000L bag as the main sampling bag 2, and two 10L bags as the auxiliary sampling bags 4. Dynamic test, use one portion (the material used in one car) of seat foam, seat cover, other non-metal seat accessories as environmental components in the main sampling bag 2. Fill the main sampling bag 2 with 50% volume of high-purity nitrogen, and carry out gas replacement in the environmental chamber 1 at 65±2℃ for 2h; after 2h, carry out gas sampling of the auxiliary sampling bag 4, place the seat ventilation fan in the auxiliary sampling bag 4 as the test group sampling bag, knead the main sampling bag 2 before sampling to make the gas uniformly distributed, use the main sampling pump 5 to transfer the gas from the main sampling bag 2 to the two auxiliary sampling bags 4, one as the reference group and one as the test group, place the seat ventilation fan in the auxiliary sampling bag 4 as the experimental group, and the volume of the gas to be measured transferred by the main sampling pump 5 is half of the volume of the auxiliary sampling bag. The two auxiliary sampling bags 4 need to be pre-sampled and tested, and one of them is selected to place the seat ventilation fan and carry out leak detection, the leak detection method is to place the seat ventilation fan in the bag, fill the bag with high-purity nitrogen, and power on the seat ventilation fan to work at room temperature (23±2)℃ for 16h to observe whether there is leakage. The main sampling pump 5 is used when the gas in the main sampling bag 2 is transferred to the auxiliary sampling bag 4, and the transfer flow rate of the main sampling pump 5 is set to (500±5)ml / min. After the gas transfer is completed, place the two auxiliary sampling bags 4 together with the seat ventilation fan at room temperature (23±2)℃ for 2h to ensure that the gas in the bag is cooled to room temperature. Then power on the seat ventilation fan to ensure that it is in normal working condition at room temperature (23±2)℃, and after 2h, DNPH tube and Tenax tube are used for sampling and analysis, and the sampling and analysis methods refer to HJ / T 400-2007. Test result = gas concentration in test group sampling bag - gas concentration in test group sampling bag before placing electrical elements (corresponding to bag blank concentration), unit μg / m 3 If the atmospheric pressure changes greatly in the test environment, use a barometer to test the actual atmospheric pressure, and use the ideal gas state equation to correct the volume concentration.

[0022] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A device for verifying the VOC performance test of automotive interior electrical components under dynamic working conditions, characterized in that, The application relates to an environment cabin, a main sampling bag, a main gas pipe, two auxiliary sampling bags and a main sampling pump. One end of the main gas pipe is connected with the main sampling bag, and the other end of the main gas pipe is connected with the auxiliary sampling bags.

2. The VOC performance testing device for verifying the dynamic working condition of the electrical components in the automotive interior according to claim 1, characterized in that, The main sampling bag in the environment cabin is used for storing and treating the gas, and the gas in the main sampling bag is introduced into the two auxiliary sampling bags outside the environment cabin through the main gas pipe.

3. The VOC performance testing device for verifying the dynamic working condition of the electrical components in the automotive interior according to claim 1, characterized in that, After the gas in the auxiliary sampling bags is introduced into the main sampling bag, the auxiliary sampling bags are operated under the set environment condition for a set time, and then the auxiliary sampling bags are connected with a gas sampling pipe through an auxiliary gas pipe.

4. The VOC performance testing device for verifying the dynamic working condition of the electrical components in the automotive interior according to claim 1, characterized in that, The auxiliary gas pipe is provided with an auxiliary sampling pump, which is used for conveying the gas in the auxiliary sampling bags into the sampling pipe through the auxiliary gas pipe. The gas sampling pipe comprises a Tenax physical adsorption sampling pipe and a DNPH chemical reaction adsorption sampling pipe.

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