CN204575393U - A kind of walk-in type car load VOC and aldoketones sampling environmental chamber - Google Patents
A kind of walk-in type car load VOC and aldoketones sampling environmental chamber Download PDFInfo
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- CN204575393U CN204575393U CN201520312936.8U CN201520312936U CN204575393U CN 204575393 U CN204575393 U CN 204575393U CN 201520312936 U CN201520312936 U CN 201520312936U CN 204575393 U CN204575393 U CN 204575393U
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Abstract
The utility model belongs to quality analysis and detection technique field, is specifically related to a kind of VOC and aldoketones sampling environmental chamber of car load, concrete technical scheme is: a kind of walk-in type car load VOC and aldoketones sampling environmental chamber, comprise working bin and equipment compartment, working bin is made up of heat room plate shell and inwall, inwall by inertia and the mirror face stainless steel of inner wall smooth make, cabin body favorable sealing property, working bin keeps certain pressure-fired, in case the entering of outside contamination, instrument factory is built with air exchange system, need to replace air in cabin according to operating mode, the rear end of working bin is provided with the door entered for vehicle, the sidewall of working bin is also provided with the temperature control system controlling temperature in storehouse, the moisture control system of controlled humidity, control the air circulating system of wind direction, background concentration control system, air exchange system, malleation keeping system and New-air purifying system in the storehouse controlling pressure in storehouse, floor in working bin is preset with track, open door, automobile directly sails into.
Description
Technical field
The utility model belongs to quality analysis and detection technique field, is specifically related to a kind of VOC and aldoketones sampling environmental chamber of car load.
Background technology
Along with the high speed development of automobile industry, in-vehicle air pollution problem is more and more subject to showing great attention to of all circles.The requirement of consumer to car comfort and sense organ is more and more higher, for adapting to the requirement of consumer, improves constantly decoration level and the compartment leakproofness of car facilities, makes in-vehicle air pollution thing build up and produce air pollution.
Environmental consciousness and the sense of self-protection of the public improve constantly, the in-car air quality growing interest healthy to direct relation.In in-vehicle air pollution thing, formaldehyde, VOC(volatile organic matter) in benzene, the compositions such as toluene are the carcinogenic substances that the World Health Organization (WHO) is assert, Long Term Contact exceeds standard the pollutant of concentration can serious harm health of people, formaldehyde can cause nausea, vomiting, cough, uncomfortable in chest, asthma is the pathology such as pulmonary emphysema even, Long Term Contact formaldehyde can cause chronic respiratory disease, nasal cavity can be caused time serious, oral cavity, nasopharynx, throat, skin and gastral cancerous lesion, neonate's physique is even caused to reduce, chromosome abnormality, cause degradation problem under children's intelligence, the burst size of pollutant is tested and is limited, to be conducive to improving the quality of products, protection health of people.
Utility model content
The utility model overcomes the deficiency that prior art exists, aim to provide a kind of car load VOC of walk-in type and the sampling environmental chamber of aldoketones objectionable impurities, this environmental chamber provides a clean enclosure space, can absorb rapidly and remove the pollutant in air, accurately control the index such as temperature, humidity, wind speed, relative pressure, ventilation rate, background concentration in storehouse, by determining its pollutant emission levels to the detection of in-vehicle exposure substrate concentration simultaneously.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of walk-in type car load VOC and aldoketones sampling environmental chamber, comprise working bin, working bin is made up of heat room plate shell and inwall, inwall by inertia and the mirror face stainless steel of inner wall smooth make, cabin body favorable sealing property, the encapsulant (expanded PTFE etc.) of not release formaldehyde, VOC selected meticulously by encapsulant.Working bin keeps certain pressure-fired, in case the entering of outside contamination, instrument factory, built with air exchange system (0 ~ 5 time/hour), needs to replace air in cabin according to operating mode.The rear end of working bin is provided with the door entered for vehicle, the sidewall of working bin is also provided with control temperature in storehouse temperature control system, the moisture control system of controlled humidity, the air circulating system controlling wind direction, background concentration control system, air exchange system, in control storehouse pressure storehouse in malleation keeping system and New-air purifying system, floor in working bin is preset with track, open door, automobile directly sails into.
Wherein, air circulating system comprises housing, is connected in housing and working bin by air inlet with air outlet, air inlet, forms external air channel between enclosure interior and air outlet, air inlet in housing is provided with circulating fan, and inner air forces Rapid Circulation via blower fan.
Wherein, temperature control system is arranged in external air channel, and temperature control system comprises heating component and cooling assembly, and heating component is arranged on the top of cooling assembly, controlled the output of heating, freezing by the signal of working bin sensor feedback, realize temperature and control fast.
Wherein, moisture control system comprises the dehumidifier be arranged in housing and the humidification boiler be arranged on outside housing, humidification boiler is connected by pipeline with the inside of housing, drip tray and water tank is also provided with in housing, be connected by pipeline between drip tray and water tank, drip tray is arranged on air inlet and its upper end open is placed in the below of dehumidifier.Adopt freeze drying, steam humidification method controlled humidity, directly act on the air in working bin, response is fast, and control accuracy is high, can be good little.In working bin, humidity sensor is installed, controls the boot sequence, frequency etc. of humidification, dehumidifying according to the signal feedback of humidity sensor; Dehumidifying coil is positioned at air channel, and damping device is placed in outside working bin, and steam inputs circulation air path by conduit, mixes rapidly in wind cyclic process.
Wherein, wind simulation system comprises axial flow blower, and axial flow blower is arranged in working bin, and the air outlet of axial flow blower is arranged towards the rear end of working bin, the transport condition of simulating vehicle.
Wherein, air exchange system comprises the interior air channel be arranged in working bin, air-return duct, air delivery duct and porous air distribution web plate, the one end in interior air channel is connected by air outlet with external air channel, the other end is connected with air delivery duct, the outlet air end of air delivery duct is connected with working bin, the air inlet of air-return duct is connected with working bin, is connected between air-return duct with external air channel by air inlet, and porous air distribution web plate is transversely arranged in working bin.The modal crossing current mode of nature is taked in wind admonitory talk to subordinates, air drives via blower fan, suck from environmental chamber side, a cycle period is completed via external air channel, interior air channel, air delivery duct and air-return duct, inside takes porous plate to carry out trim to air, ensures that the wind speed near tested vehicle meets standard-required.
Wherein, in storehouse, malleation keeping system comprises differential pressure pickup, controller and frequency converter, the inductive head of differential pressure pickup is inserted in working bin, be connected by controller between the output terminal of differential pressure pickup and the input end of frequency converter, the pressure reduction in cabin is taked to change by differential pressure pickup, and pressure difference signal is flowed to frequency converter, by the pressure in controller and Frequency Converter Control cabin.
Wherein, New-air purifying system comprises blower fan, clarifier, exhaust duct and butterfly valve, the air inlet of blower fan is connected with air by induced duct, the exhaust outlet of blower fan is connected by clarifier with between air intake butterfly valve, also flowmeter is connected with between air intake butterfly valve and clarifier, air intake butterfly valve is connected with air-return duct by pipeline, and exhaust duct is connected with interior air channel, is also connected with air draft butterfly valve between exhaust duct and interior air channel.Fresh-air ventilation sucks outside air by blower fan, and send in environmental chamber after cleansing filter, flowmeter metering, contaminated air is drained into outdoor by exhaust duct, completes scavenging period.Mortgage centrifugal blower is adopted in cabin, to pass into pure air to keep malleation, air intake is sent in environmental chamber after cleansing filter, and case, built with micro-pressure sensor, responds to pressure in cabin automatically, automatically control air output by controller, cabin external and internal pressure is maintained a steady state value.
Wherein, be provided with exhaust box and screen pack in induced duct, screen pack is arranged on the outside of exhaust box, and improve filtering accuracy, operate steadily, noise is little.
Wherein, also comprise tail gas discharge system, tail gas discharge system comprises exhaust fan, is connected between exhaust fan and the automobile tail gas pipe in working bin by pipeline, be connected by rapid-acting coupling between automobile tail gas pipe with pipeline, induced draft fan is arranged on the outside of working bin.
The utility model compared with prior art has following beneficial effect: sidewall cabin of the present utility model body being provided with working bin is also provided with the temperature control system controlling temperature in storehouse, the moisture control system of controlled humidity, control the air circulating system of wind direction, background concentration control system, air exchange system, malleation keeping system and New-air purifying system in the storehouse controlling pressure in storehouse, by the perfect adaptation of this several system, simulate a specific environment, being used for testing automobile to get off interior VOC in the environmental baseline of regulation, formaldehyde, Deng the burst size of aldoketones material, be used for assessing the air quality level of automotive interior, automatic control, sampling is convenient, measuring accuracy is high, convenient and practical, workable, can extensively promote the use of.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in more detail.
Fig. 1 is inner structure schematic diagram of the present utility model.
Fig. 2 is side view of the present utility model.
Fig. 3 is inside top figure of the present utility model.
Fig. 4 is the mounting structure schematic diagram of air circulating system of the present utility model.
Fig. 5 is the mounting structure schematic diagram of temperature control system of the present utility model.
Fig. 6 is the mounting structure schematic diagram of moisture control system of the present utility model.
Fig. 7 is the mounting structure schematic diagram of wind simulation system of the present utility model.
Fig. 8 is the mounting structure schematic diagram of air exchange system of the present utility model.
Fig. 9 is the mounting structure schematic diagram of malleation keeping system of the present utility model.
Figure 10 is the mounting structure schematic diagram of New-air purifying system of the present utility model.
Figure 11 is the mounting structure schematic diagram of tail gas discharge system of the present utility model.
In figure: 1 is working bin, 2 is wind simulation system, 3 is temperature control system, 4 is moisture control system, 5 air circulating systems, 6 is air exchange system, 7 is malleation keeping system, 8 is New-air purifying system, 9 is tail gas discharge system, 10 is automobile, 11 is carbon monooxide alarm device, 21 is axial flow blower, 31 is heating component, 32 is cooling assembly, 41 is dehumidifier, 42 is humidification boiler, 43 is drip tray, 44 is water tank, 51 is housing, 52 is air inlet, 53 is air outlet, 54 is external air channel, 55 is circulating fan, 61 is interior air channel, 62 is air-return duct, 63 is air delivery duct, 64 is porous air distribution web plate, 71 is differential pressure pickup, 72 is controller, 73 is frequency converter, 81 is blower fan, 82 is clarifier, 83 is exhaust duct, 84 is air intake butterfly valve, 85 is flowmeter, 86 is air draft butterfly valve, 87 is exhaust box, 88 is screen pack, 91 is exhaust fan.
Embodiment
Be described in further detail the utility model by reference to the accompanying drawings now, accompanying drawing is the schematic diagram simplified, and only basic structure of the present utility model is described in a schematic way, therefore it only shows the formation relevant with the utility model.
As Figure 1-3, a kind of walk-in type car load VOC and aldoketones sampling environmental chamber, comprise working bin 1, working bin 1 is made up of heat room plate shell and inwall, inwall by inertia and the mirror face stainless steel of inner wall smooth make, cabin body favorable sealing property, the encapsulant (expanded PTFE etc.) of not release formaldehyde, VOC selected meticulously by encapsulant.Working bin 1 keeps certain pressure-fired, in case the entering of outside contamination, instrument factory is built with air exchange system 6(0 ~ 5 time/hour), need to replace air in cabin according to operating mode.The rear end of working bin 1 is provided with the door entered for vehicle, the sidewall of working bin 1 is also provided with control temperature in storehouse temperature control system 3, the moisture control system 4 of controlled humidity, the air circulating system 5 controlling wind direction, background concentration control system, air exchange system 6, control pressure in storehouse storehouse in malleation keeping system 7 and New-air purifying system 8, floor in working bin 1 is preset with track, open door, automobile 10 directly sails into.
As shown in Figure 4, air circulating system 5 comprises housing 51, housing 51 is connected with air outlet 53 by air inlet 52 with in working bin 1, external air channel 54 is formed between air inlet 52, housing 51 inside and air outlet 53, air inlet 52 place in housing 51 is provided with circulating fan 55, and inner air forces Rapid Circulation via blower fan.
As shown in Figure 5, temperature control system 3 is arranged in external air channel 54, temperature control system 3 comprises heating component 31 and cooling assembly 33, heating component 31 is arranged on the top of cooling assembly 33, controlled the output of heating, freezing by the signal of working bin 1 sensor feedback, realize temperature and control fast.
As shown in Figure 6, moisture control system 4 comprises the dehumidifier 41 be arranged in housing 51 and the humidification boiler 42 be arranged on outside housing 51, humidification boiler 42 is connected by pipeline with the inside of housing 51, drip tray 43 and water tank 44 is also provided with in housing 51, be connected by pipeline between drip tray 43 and water tank 44, drip tray 43 is arranged on air inlet 52 place and its upper end open is placed in the below of dehumidifier 41.Adopt freeze drying, steam humidification method controlled humidity, directly act on the air in working bin 1, response is fast, and control accuracy is high, can be good little.In working bin 1, humidity sensor is installed, controls the boot sequence, frequency etc. of humidification, dehumidifying according to the signal feedback of humidity sensor; Dehumidifying coil is positioned at air channel, and damping device is placed in outside working bin, and steam inputs circulation air path by conduit, mixes rapidly in wind cyclic process.
As shown in Figure 7, wind simulation system 2 comprises axial flow blower 21, and axial flow blower 21 is arranged in working bin 1, and the air outlet of axial flow blower 21 is arranged towards the rear end of working bin 1, the transport condition of simulating vehicle.
As shown in Figure 8, air exchange system 6 comprises the interior air channel 61 be arranged in working bin 1, air-return duct 62, air delivery duct 63 and porous air distribution web plate 64, the one end in interior air channel 61 is connected by air outlet 53 with external air channel 54, the other end is connected with air delivery duct 63, the outlet air end of air delivery duct 63 is connected with working bin 1, the air inlet 52 of air-return duct 62 is connected with working bin 1, is connected between air-return duct 62 with external air channel 54 by air inlet 52, and porous air distribution web plate 64 is transversely arranged in working bin 1.The modal crossing current mode of nature is taked in wind admonitory talk to subordinates, air drives via blower fan, suck from environmental chamber side, a cycle period is completed via external air channel 54, interior air channel 61, air delivery duct 63 and air-return duct 62, inside takes porous plate to carry out trim to air, ensures that the wind speed near tested vehicle meets standard-required.
Ventilation can discharge Cabin contamination thing fast, and when ISO 12219-1-2012 requires that tested vehicle is in driving model, ventilation rate remains on the level of 2 times/hour.
Wherein, environmental chamber will keep the clean of air in cabin for a long time, function and the measures such as malleation maintenance, fresh-air ventilation must to be possessed in clean cabin body, clean encapsulant, cabin, efficient air cleaning system must be possessed simultaneously, be used for removing rapidly the pollutant that tested vehicle discharges, ensure that background concentration meets test request.Wind in working bin 1 is by the air channel containing sorbing material, and can ensure that in cabin, background concentration is extremely low for a long time with the internal circulating load of more than 200 times per hour, the amount of fill of sorbing material is about 500 kilograms, and the equipment that can ensure uses more than 2 years background concentrations not exceed standard continuously.
Working bin 1 goes not adopt SUS304 mirror face stainless steel to make, any surface finish, adopts alcohol wiped clean repeatedly, without VOCs emission and absorption.
Encapsulant all adopts the cleaning material such as food grade silicone, teflon, carries out harmless treatment before using, and ensures without VOCs emission and absorption.
As shown in Figure 9, in storehouse, malleation keeping system 7 comprises differential pressure pickup 71, controller 72 and frequency converter 73, the inductive head of differential pressure pickup 71 is inserted in working bin 1, be connected by controller 72 between the output terminal of differential pressure pickup 71 and the input end of frequency converter 73, the pressure reduction in cabin is taked to change by differential pressure pickup 71, and pressure difference signal is flowed to frequency converter 73, by the pressure in controller 72 and frequency converter 73 control cabinet.
As Figure 10, New-air purifying system 8 comprises blower fan 81, clarifier 82, exhaust duct 83 and butterfly valve, the air inlet 52 of blower fan 81 is connected with air by induced duct, the exhaust outlet of blower fan 81 is connected by clarifier 82 with between air intake butterfly valve 84, flowmeter 85 is also connected with between air intake butterfly valve 84 and clarifier 82, air intake butterfly valve 84 is connected with air-return duct 62 by pipeline, and exhaust duct 83 is connected with interior air channel 61, is also connected with air draft butterfly valve 86 between exhaust duct 83 and interior air channel 61.Fresh-air ventilation sucks outside air by blower fan 81, and measure in rear feeding environmental chamber through cleansing filter, flowmeter 85, contaminated air is drained into outdoor by exhaust duct 83, completes scavenging period.Mortgage centrifugal blower is adopted in cabin, to pass into pure air to keep malleation, air intake is sent in environmental chamber after cleansing filter, and case, built with micro-pressure sensor, responds to pressure in cabin automatically, automatically control air output by controller 72, cabin external and internal pressure is maintained a steady state value.
Wherein, be provided with exhaust box 87 and screen pack 88 in induced duct, screen pack 88 is arranged on the outside of exhaust box 87, and improve filtering accuracy, operate steadily, noise is little.
As shown in figure 11, also comprise tail gas discharge system 9, tail gas discharge system 9 comprises exhaust fan 91, be connected by pipeline between exhaust fan 91 and automobile 10 offgas duct in working bin 1, automobile 10 offgas duct is connected by rapid-acting coupling with between pipeline, and induced draft fan is arranged on the outside of working bin 1.
In addition, be also provided with illumination heating system in cabin, adopt 84 infrared heating shot-lights, simulation sunlight is to carrying out irradiation heating in automobile 10, product adopts PID computer temperature control, can realize test intensification requirement fast.
Wherein, cabin body is also provided with carbon monooxide alarm device 11, for measuring the concentration of the carbon monoxide in cabin.
During concrete operations, vehicle is sailed in environment storehouse, remove the coverture on vehicle interior component, by all car and boat, door is all opened, standing placement is no less than 6 hours, the environment of left back four hours must require identical with test phase, then sampling apparatus is not known, all vehicle windows, door closes sealing, vehicle closure 16 hours, test chamber environment is consistent with test phase, close and terminate post-sampling, and enter test phase, carry out VOC sampling, carry out aldoketones sampling, carry out synchronized sampling out of my cabin, sampling volume is not more than appearance of vehicle 5%, temperature controls at 25 ± 1 DEG C, humid control is at 50 ± 10%RH, wind speed is less than 0.3m/s.By Sample storage analysis, after test terminates, vehicle rolls environmental chamber away from.
By reference to the accompanying drawings embodiment of the present utility model is explained in detail above, but the utility model is not limited to above-described embodiment, in the ken that those of ordinary skill in the art possess, can also make a variety of changes under the prerequisite not departing from the utility model aim.
Claims (10)
1. a walk-in type car load VOC and aldoketones sampling environmental chamber, it is characterized in that, comprise working bin (1), the rear end of described working bin (1) is provided with the door entered for vehicle, the sidewall of described working bin (1) is also provided with control temperature in storehouse temperature control system (3), the moisture control system (4) of controlled humidity, the air circulating system (5) controlling wind direction, air exchange system (6), control pressure in storehouse storehouse in malleation keeping system (7) and New-air purifying system (8).
2. a kind of walk-in type car load VOC according to claim 1 and aldoketones sampling environmental chamber, it is characterized in that, described air circulating system (5) comprises housing (51), described housing (51) is connected with air outlet (53) by air inlet (52) with in working bin (1), form external air channel (54) between described air inlet (52), housing (51) inside and air outlet (53), air inlet (52) place in described housing (51) is provided with circulating fan (55).
3. a kind of walk-in type car load VOC according to claim 2 and aldoketones sampling environmental chamber, it is characterized in that, described temperature control system (3) is arranged in external air channel (54), described temperature control system (3) comprises heating component (31) and cooling assembly (33), and described heating component (31) is arranged on the top of cooling assembly (33).
4. a kind of walk-in type car load VOC according to claim 3 and aldoketones sampling environmental chamber, it is characterized in that, described moisture control system (4) comprises the dehumidifier (41) that is arranged in housing (51) and is arranged on housing (51) humidification boiler (42) outward, described humidification boiler (42) is connected by pipeline with the inside of housing (51), drip tray (43) and water tank (44) is also provided with in described housing (51), be connected by pipeline between described drip tray (43) and water tank (44), described drip tray (43) is arranged on air inlet (52) place and its upper end open is placed in the below of dehumidifier (41).
5. a kind of walk-in type car load VOC according to claim 4 and aldoketones sampling environmental chamber, it is characterized in that, also comprise wind simulation system (2), described wind simulation system (2) comprises axial flow blower (21), described axial flow blower (21) is arranged in working bin (1), and the air outlet of described axial flow blower (21) is arranged towards the rear end of working bin (1).
6. a kind of walk-in type car load VOC according to claim 5 and aldoketones sampling environmental chamber, it is characterized in that, described air exchange system (6) comprises the interior air channel (61) be arranged in working bin (1), air-return duct (62), air delivery duct (63) and porous air distribution web plate (64), one end of described interior air channel (61) is connected by air outlet (53) with external air channel (54), the other end is connected with air delivery duct (63), the outlet air end of described air delivery duct (63) is connected with working bin (1), the air inlet (52) of described air-return duct (62) is connected with working bin (1), be connected by air inlet (52) between air-return duct (62) with external air channel (54), described porous air distribution web plate (64) is transversely arranged in working bin (1).
7. a kind of walk-in type car load VOC according to claim 6 and aldoketones sampling environmental chamber, it is characterized in that, in described storehouse, malleation keeping system (7) comprises differential pressure pickup (71), controller (72) and frequency converter (73), the inductive head of described differential pressure pickup (71) is inserted in working bin (1), is connected between the output terminal of described differential pressure pickup (71) and the input end of frequency converter (73) by controller (72).
8. a kind of walk-in type car load VOC according to claim 7 and aldoketones sampling environmental chamber, it is characterized in that, described New-air purifying system (8) comprises blower fan (81), clarifier (82), exhaust duct (83) and air intake butterfly valve (84), the air inlet (52) of described blower fan (81) is connected with air by induced duct, the exhaust outlet of blower fan (81) is connected by clarifier (82) with between air intake butterfly valve (84), flowmeter (85) is also connected with between described air intake butterfly valve (84) and clarifier (82), described air intake butterfly valve (84) is connected with air-return duct (62) by pipeline, described exhaust duct (83) is connected with interior air channel (61), air draft butterfly valve (86) is also connected with between described exhaust duct (83) and interior air channel (61).
9. a kind of walk-in type car load VOC according to claim 8 and aldoketones sampling environmental chamber, it is characterized in that, be provided with exhaust box (87) and screen pack (88) in described induced duct, described screen pack (88) is arranged on the outside of exhaust box (87).
10. a kind of walk-in type car load VOC according to claim 9 and aldoketones sampling environmental chamber, it is characterized in that, also comprise tail gas discharge system (9), described tail gas discharge system (9) comprises exhaust fan (91), be connected by pipeline between described exhaust fan (91) and automobile (10) offgas duct in working bin (1), described automobile (10) is connected by rapid-acting coupling between offgas duct with pipeline, and described induced draft fan is arranged on the outside of working bin (1).
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| CN201520312936.8U CN204575393U (en) | 2015-05-14 | 2015-05-14 | A kind of walk-in type car load VOC and aldoketones sampling environmental chamber |
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| CN201520312936.8U CN204575393U (en) | 2015-05-14 | 2015-05-14 | A kind of walk-in type car load VOC and aldoketones sampling environmental chamber |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106288247A (en) * | 2015-05-14 | 2017-01-04 | 上海秦沛环保科技有限公司 | Walk-in type car load VOC and aldoketones sampling environmental chamber |
| CN106628019A (en) * | 2016-12-02 | 2017-05-10 | 中交天津航道局有限公司 | Ship protection device for suction hopper ship excavation of soil containing highly-toxic hydrogen sulfide |
| CN108195634A (en) * | 2017-12-11 | 2018-06-22 | 北京汽车研究总院有限公司 | VOC sampler bag aging methods |
| CN111175440A (en) * | 2018-11-09 | 2020-05-19 | 博玺投资有限公司 | Dynamic testing method for gaseous pollutants of automotive interior material |
-
2015
- 2015-05-14 CN CN201520312936.8U patent/CN204575393U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106288247A (en) * | 2015-05-14 | 2017-01-04 | 上海秦沛环保科技有限公司 | Walk-in type car load VOC and aldoketones sampling environmental chamber |
| CN106628019A (en) * | 2016-12-02 | 2017-05-10 | 中交天津航道局有限公司 | Ship protection device for suction hopper ship excavation of soil containing highly-toxic hydrogen sulfide |
| CN108195634A (en) * | 2017-12-11 | 2018-06-22 | 北京汽车研究总院有限公司 | VOC sampler bag aging methods |
| CN111175440A (en) * | 2018-11-09 | 2020-05-19 | 博玺投资有限公司 | Dynamic testing method for gaseous pollutants of automotive interior material |
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