CN102323112A - Flow-guiding air duct structure of volatile organic matter detection system - Google Patents
Flow-guiding air duct structure of volatile organic matter detection system Download PDFInfo
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- CN102323112A CN102323112A CN201110238874A CN201110238874A CN102323112A CN 102323112 A CN102323112 A CN 102323112A CN 201110238874 A CN201110238874 A CN 201110238874A CN 201110238874 A CN201110238874 A CN 201110238874A CN 102323112 A CN102323112 A CN 102323112A
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Abstract
The invention discloses a flow-guiding air duct structure of a volatile organic matter detection system, which comprises a testing chamber, at least one circulating fan disposed in the testing chamber; an air duct plate is disposed in the testing chamber; an air duct is formed by the air duct plate and the inner wall of the testing chamber; an air return opening is disposed at the center part of the air duct plate; an air outlet is formed between the edge of the air duct plate and the inner wall of the testing chamber; a flow-guiding pipe is disposed on the air duct plate; the circulating fan extends into the flow-guiding pipe; air flowing back from the air return opening flows out along the flow-guiding pipe, and then flows into the testing chamber from the air outlet along the air duct; the edge of the air duct plate is provided with right-angle, inclined or circular-arc flow-guiding plates. Air flow which is blown down along the inner wall of the testing chamber is formed in the testing chamber, and thus adsorbates on the inner wall of the testing chamber are blown down and are allowed to continue to circulate in the testing chamber; therefore the detection value detected from a sample obtained during sampling more approximates the real value of the volatile organic matter in the testing chamber; the detection error is greatly reduced, and the detection precision is increased.
Description
Technical field
The present invention relates to the volatile organic matter detection system, more particularly, relate to a kind of flow-guiding type air channel structure of volatile organic matter detection system.
Technical background
The volatile organic matter detection system is to be used for the product that contains volatile organic matter is detected, and whether reaches the requirement of relevant criterion with the volatility organic content that detects this product, in testing process; Test storehouse inwall is adsorbed with volatile organic matter and forms adsorbate, and test storehouse inwall has the dead angle, and organism has residual; And during the content of sample analysis volatile organic matter, be to use from the sample of being obtained of the sample tap of volatile organic matter detection system to detect, because test storehouse inwall has adsorbed a large amount of volatile organic matters; The detected value that causes from sample, obtaining is lower than the actual value of testing volatile organic matter in the storehouse, and it is big to detect error, can not effectively satisfy the high-precision test needs; In order to strengthen testing gas flow in the storehouse; In the test storehouse, be equiped with blower fan and stir, but owing to wind speed in the test storehouse has requirement, the inner loop air quantity can not infinitely strengthen; Causing testing the storehouse inwall has many adsorbates, influences accuracy of detection.
Summary of the invention
The objective of the invention is to overcome above-mentioned defective in the prior art: a kind of flow-guiding type air channel structure that can effectively improve the accuracy of detection of volatile organic matter detection system is provided.
For realizing above-mentioned purpose; Technical scheme provided by the invention is following: construct a kind of flow-guiding type air channel structure of volatile organic matter detection system, comprise the test storehouse, be installed at least one circulating fan in the test storehouse; Said test also is equiped with the air channel plate in the storehouse; This air channel plate forms the air channel with test storehouse inwall, and plate middle part in air channel offers return air inlet, forms air outlet between the edge of air channel plate and the test storehouse inwall.
As further improvement of the present invention, be equiped with mozzle on the plate of said air channel, circulating fan stretches in the mozzle, and the gas that flows back to from return air inlet flows out along mozzle, flows into along the air channel from air outlet in the test storehouse again.
Further improve as of the present invention, the edge of said air channel plate has rectangular-shaped, skewed or circular-arc fair water fin.
The beneficial effect of the flow-guiding type air channel structure of volatile organic matter detection system according to the invention is: through in the examination storehouse, the air channel plate being set; This air channel plate forms the air channel with test storehouse inwall; Plate middle part, air channel offers return air inlet, forms air outlet between the edge of air channel plate and the test storehouse inwall.In the test storehouse, form along the air-flow of test storehouse inwall; Thereby the adsorbate that will test on the inwall of storehouse is blown down continuation circulation in the test storehouse; The actual value that the detected value that the sample detection of being got when making sampling more approaches to test volatile organic matter in the storehouse; Significantly reduce the detection error, improved accuracy of detection; Be equiped with mozzle on the plate of said air channel, circulating fan stretches in the mozzle, and the gas that flows back to from return air inlet flows out along mozzle, flows into along the air channel from air outlet in the test storehouse again.The edge of said air channel plate has rectangular-shaped, skewed or circular-arc fair water fin; Fair water fin quickens gas and the control wind direction; The adsorbate that to test on the inwall of storehouse is better blown down; The organic reagent that said test storehouse inwall, air channel plate surface, circulating fan are surperficial, smear on test door inwall and mozzle surface at high temperature toasts, and can reduce the absorption affinity on adsorbate surperficial, the test door inwall of inwall, air channel plate surface, circulating fan and mozzle surface in the test storehouse.
Below in conjunction with accompanying drawing and embodiment the flow-guiding type air channel structure of volatile organic matter detection system of the present invention is described further:
Description of drawings
Fig. 1 is the structural representation of the flow-guiding type air channel structure of volatile organic matter detection system of the present invention;
Fig. 2 is the A-A cut-open view of Fig. 1.
Embodiment
Below the most preferred embodiment of flow-guiding type air channel structure of volatile organic matter detection system according to the invention, therefore do not limit protection scope of the present invention.
With reference to Fig. 1, Fig. 2, a kind of flow-guiding type air channel structure of volatile organic matter detection system is provided, comprise test storehouse 1; Be installed at least one circulating fan 2 in the test storehouse 1, circulating fan 2 is fan blade or wind wheel structure, also is equiped with air channel plate 3 in the said test storehouse 1; This air channel plate 3 forms air channel 4 with test storehouse 1 inwall; Plate 3 middle parts in air channel offer return air inlet 5, and open form becomes air outlet 6 between the edge of air channel plate 3 and test storehouse 1 inwall, and 1 forms the air-flow that inwall is blown down along the test storehouse in the test storehouse; Thereby the adsorbate that will test on the inwall of storehouse is blown down continuation circulation in test storehouse 1; The actual value that the detected value that the sample detection of being got when making sampling more approaches to test volatile organic matter in the storehouse 1 has significantly reduced the detection error, has improved accuracy of detection.
Be equiped with mozzle 7 on the said air channel plate 3; Circulating fan 2 stretches in the mozzle 7, and the gas that flows back to from return air inlet 5 flows out along mozzle 7, and 6 inflows are tested in the storehouses 1 along air channel 4 from air outlet again; Mozzle 7 can increase the flow velocity of gas; Mozzle 7 can increase the flow velocity of gas, helps the adsorbate on the inwall of test storehouse is blown down, and has further reduced the adsorbate on the inwall of test storehouse.
The edge of said air channel plate 3 has rectangular-shaped, skewed or circular-arc fair water fin 8; 8 pairs of gases of fair water fin quicken and flow to control; The adsorbate that to test on the inwall of storehouse is better blown down; Significantly reduced the adsorbate on the inwall of test storehouse, this structure is satisfying under the inner wind conditions in test storehouse, greatly near the wind speed the inwall of increase test storehouse.
Said return air inlet 5 be shaped as netted or the orifice plate shape.
Said test storehouse 1 is equiped with test door 9, is equiped with O-ring seal 10 between this test door 9 and the test storehouse 1.
Said test door 9 is expressed as side of test chamber of the signal that door is installed, does not represent test hatch door 9 to be necessary for side of independence of test chamber.Test chamber hour, the face that door is installed can be that whole door is a face of test chamber.When test chamber was big, door was installed on certain part of a face of test chamber.
Said test storehouse 1 is provided with chuck 11, is equiped with jacketed evaporator 12, sheathed heater 13, chuck circulating fan 14 between test storehouse 1 and the chuck 1.
Be equiped with insulation material 15 in the said chuck 11.
The turning in said test storehouse 1 is circular-arc or inclination, and it is residual to reduce volatile organic matter.
Said test storehouse 1 inwall, air channel plate 3 surfaces, circulating fan 2 surfaces, test door 9 inwalls and mozzle 7 surfaces scribble organic reagent and are toasting more than 350 ℃; Be coated with the organism of spreading like this and neither discharge the low temperature volatile organic matter, also reduced volatile organic matter and tested storehouse inwall adsorptive power.
The foregoing description is a preferred implementation of the present invention; But embodiment of the present invention is not restricted to the described embodiments; Other any do not deviate from change, the modification done under spirit of the present invention and the principle, substitutes, combination, simplify; All should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (8)
1. the flow-guiding type air channel structure of a volatile organic matter detection system; Comprise test storehouse (1), be installed at least one circulating fan (2) in the test storehouse (1), it is characterized in that; Also be equiped with air channel plate (3) in the said test storehouse (1); This air channel plate (3) forms air channel (4) with test storehouse (1) inwall, and air channel plate (3) middle part offers return air inlet (5), forms air outlet (6) between the edge of air channel plate (3) and test storehouse (1) inwall.
2. the flow-guiding type air channel structure of volatile organic matter detection system according to claim 1; It is characterized in that; Be equiped with mozzle (7) on the said air channel plate (3); Circulating fan (2) stretches in the mozzle (7), and the gas that flows back to from return air inlet (5) flows out along mozzle (7), flows in the test storehouse (1) along air channel (4) from air outlet (6) again.
3. the flow-guiding type air channel structure of volatile organic matter detection system according to claim 1 is characterized in that, the edge of said air channel plate (3) has rectangular-shaped, skewed or circular-arc fair water fin (8).
4. the flow-guiding type air channel structure of volatile organic matter detection system according to claim 1 is characterized in that, said test storehouse (1) is equiped with test door (9), is equiped with O-ring seal (10) between this test door (9) and the test storehouse (1).
5. the flow-guiding type air channel structure of volatile organic matter detection system according to claim 1; It is characterized in that; Said test storehouse (1) is provided with chuck (11), is equiped with jacketed evaporator (12), sheathed heater (13), chuck circulating fan (14) between test storehouse (1) and the chuck (11).
6. the flow-guiding type air channel structure of volatile organic matter detection system according to claim 6 is characterized in that, is equiped with insulation material (15) in the said chuck (11).
7. the flow-guiding type air channel structure of volatile organic matter detection system according to claim 1 is characterized in that, the turning in said test storehouse (1) is circular-arc or inclination.
8. the flow-guiding type air channel structure of volatile organic matter detection system according to claim 1; It is characterized in that said test storehouse (1) inwall, air channel plate (3) surface, circulating fan (2) surface, test door (9) inwall and mozzle (7) surface scribble organic reagent and toasting more than 350 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110238874A CN102323112A (en) | 2011-08-19 | 2011-08-19 | Flow-guiding air duct structure of volatile organic matter detection system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110238874A CN102323112A (en) | 2011-08-19 | 2011-08-19 | Flow-guiding air duct structure of volatile organic matter detection system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155413A (en) * | 2014-07-31 | 2014-11-19 | 东北林业大学 | Micro VOC test chamber |
| CN106093317A (en) * | 2016-08-20 | 2016-11-09 | 东莞市升微机电设备科技有限公司 | Miniature VOC test chamber |
| CN111896682A (en) * | 2020-07-15 | 2020-11-06 | 上海怡骋工贸有限公司 | Multi-cabin method VOC (volatile organic compounds) release amount measuring climate cabin |
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2011
- 2011-08-19 CN CN201110238874A patent/CN102323112A/en active Pending
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| CN1042866A (en) * | 1988-11-09 | 1990-06-13 | 夏普公司 | High-temperature cooking equipment structure of film and forming method thereof |
| WO2003076904A2 (en) * | 2001-10-29 | 2003-09-18 | Lockheed Martin Corporation | Hazardous material detection system and method for use with mail and other objects |
| CN1765526A (en) * | 2005-11-25 | 2006-05-03 | 华东理工大学 | Method for painting fluoro resin inside slender metal tube |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104155413A (en) * | 2014-07-31 | 2014-11-19 | 东北林业大学 | Micro VOC test chamber |
| CN104155413B (en) * | 2014-07-31 | 2016-08-24 | 东北林业大学 | Miniature VOC laboratory |
| CN106093317A (en) * | 2016-08-20 | 2016-11-09 | 东莞市升微机电设备科技有限公司 | Miniature VOC test chamber |
| CN111896682A (en) * | 2020-07-15 | 2020-11-06 | 上海怡骋工贸有限公司 | Multi-cabin method VOC (volatile organic compounds) release amount measuring climate cabin |
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Application publication date: 20120118 |