CN102419274A - Orifice-plate-type air duct structure of volatile organic compound detection system - Google Patents
Orifice-plate-type air duct structure of volatile organic compound detection system Download PDFInfo
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- CN102419274A CN102419274A CN2011102388728A CN201110238872A CN102419274A CN 102419274 A CN102419274 A CN 102419274A CN 2011102388728 A CN2011102388728 A CN 2011102388728A CN 201110238872 A CN201110238872 A CN 201110238872A CN 102419274 A CN102419274 A CN 102419274A
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Abstract
The invention discloses an orifice-plate-type air duct structure of a volatile organic compound detection system. The structure disclosed by the invention comprises a test bin and a test bin gate connected with the test bin, wherein the test bin is also internally provided with an air duct plate; the upper part of the air duct plate is provided with an air outlet orifice plate, and the lower part of the air duct plate is provided with an air return orifice plate; the air duct plate, the air outlet orifice plate, the air return orifice plate and the inner wall of the test bin form a first air duct; the first air duct is internally provided with at least one test bin circulating fan; the air outlet orifice plate, the inner wall of the test bin and the inner wall of the test bin gate are provided with air outlets and air return ports; and the air outlet orifice plate is provided with a right-angled, inclined or circular-arc-shaped air deflector. In the test bin, airflow blown down along the inner wall of the test bin is formed, thus adsorbed substances on the inner wall of the test bin are blown down so as to be continuously circulated in the test bin, so that the detected detection value of a sample obtained during sampling is more approximate to the actual value of the volatile organic compound in the test bin, the detection error is greatly reduced, and the detection precision is improved.
Description
Technical field
The present invention relates to the volatile organic matter detection system, more particularly, relate to a kind of orifice-plate 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 adsorbing volatilizing organic matter forms adsorbate, and test storehouse inwall has the dead angle, and the dead angle is arranged; Organism has residual, and during the content of sample analysis volatile organic matter, is to use from the sample of being obtained of the sample tap of volatile organic matter detection system to detect; Since test storehouse inwall absorption a large amount of volatile organic matters, the detected value that causes from sample, obtaining is lower than the actual value of volatile organic matter in the test storehouse, it is big to detect error; Can not effectively satisfy the high-precision test needs,, in the test storehouse, be equiped with blower fan and stir in order to strengthen testing gas flow in the storehouse; But because wind speed has requirement in the test storehouse; Therefore the inner loop air quantity can not be too big, and it is more to test on the inwall of storehouse adsorbate, influences accuracy of detection.
Summary of the invention
One object of the present invention is to overcome above-mentioned defective in the prior art: a kind of orifice-plate 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: the orifice-plate type air channel structure of constructing a kind of volatile organic matter detection system; Comprise the test storehouse, with the test door that is connected of test storehouse, also be equiped with the air channel plate in the said test storehouse, plate top, air channel is equiped with the air-out orifice plate; Plate bottom, air channel is equiped with the return air orifice plate; This air channel plate, air-out orifice plate, return air orifice plate form first air channel with test storehouse inwall, are equiped with at least one test storehouse circulating fan in first air channel, and the air-out orifice plate is provided with the air outlet return air inlet with test storehouse inwall and test door inwall.
Said air-out orifice plate, return air orifice plate are more than the 5mm with the gap of test storehouse inwall and test door inwall.
As further improvement of the present invention, the edge of said air-out orifice plate has rectangular-shaped, skewed or circular-arc fair water fin.
Said test storehouse is provided with chuck, forms second air channel between test storehouse and the chuck, is equiped with jacketed evaporator, sheathed heater, chuck circulating fan in this second air channel.
The beneficial effect of the orifice-plate 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; Plate top, air channel is equiped with the air-out orifice plate; Plate bottom, air channel is equiped with the return air orifice plate, and this air channel plate, air-out orifice plate, return air orifice plate form first air channel with test storehouse inwall, are equiped with test storehouse circulating fan in first air channel; Can adopt blade structure or wind wheel structure, the air-out orifice plate is provided with air outlet with test storehouse inwall and test door inwall.Because the orifice plate damping is bigger; The air-flow that goes out air inlet duct through orifice plate is less, and is very big through the air outlet air quantity of test chamber inwall, in the test storehouse, forms the air-flow that inwall is blown down along the test storehouse; 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 has significantly reduced the detection error, has improved accuracy of detection; The edge of said air-out orifice plate has rectangular-shaped, skewed or circular-arc fair water fin; Gas flows into along first air channel from air outlet in the test storehouse; Fair water fin can increase the flow velocity and the adjustment airflow direction of gas, helps the adsorbate on the inwall of test storehouse is blown down, and more effectively reduces adsorbate and remains on the inwall of test storehouse; Guarantee that simultaneously wind speed is certain in the test chamber, and enough big along the wind speed of test chamber inwall.
Below in conjunction with accompanying drawing and embodiment the orifice-plate 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 orifice-plate 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;
Fig. 3 is one of structural representation of air intake in the middle of the orifice-plate type air channel structure of volatile organic matter detection system of the present invention adopts;
Fig. 4 is the A-A cut-open view of Fig. 3;
Fig. 5 be air intake in the middle of the orifice-plate type air channel structure of volatile organic matter detection system of the present invention adopts structural representation two.
Embodiment
Below the most preferred embodiment of orifice-plate 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 orifice-plate type air channel structure of volatile organic matter detection system is provided, comprise test storehouse 1; The test door 2 that is connected with test storehouse 1; Also be equiped with air channel plate 3 in the said test storehouse 1, plate 3 tops in air channel are equiped with air-out orifice plate 4, plate 3 bottoms in air channel are equiped with return air orifice plate 5, this air channel plate 3, air-out orifice plate 4, return air orifice plate 5 forms first air channel 6 with test storehouse 1 inwall; Be equiped with at least one test storehouse circulating fan 7 in first air channel 6; The structure of test storehouse circulating fan 7 is fan blade or wind wheel, and air-out orifice plate 4 is provided with air outlet 8 with test storehouse 1 inwall and test door 2 inwalls, 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.
Said air-out orifice plate, return air orifice plate are more than the 5mm with the gap of test storehouse inwall and test door inwall.
The edge of said air-out orifice plate 4 has rectangular-shaped, skewed or circular-arc fair water fin 9, and 9 pairs of gases of fair water fin advance more step acceleration, and the adsorbate that will test on the inwall of storehouse is better blown down, and has significantly reduced the adsorbate on the inwall of test storehouse.
Also be equiped with test storehouse well heater 11 in said first air channel 6.
Be equiped with O-ring seal 12 between said test door 10 and the test storehouse 1.
Said test door 10 is expressed as side of test chamber of the signal that door is installed, does not represent test hatch door 10 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 13, forms second air channel 14 between test storehouse 1 and the chuck 13, is equiped with jacketed evaporator 15, sheathed heater 16, chuck circulating fan 17 in this second air channel 14, is equiped with insulation material 18 in the said chuck 14.
The turning in said test storehouse 1 is circular-arc or inclination, and it is residual to reduce volatile organic matter.
Said air channel plate 3, air-out orifice plate 4, return air orifice plate 5 can adopt one of following arrangement to be arranged in the test storehouse 1: up-draught, following return air; Canyon, last return air; Left side blowing; Right return air; Right blowing, left return air.
With reference to Fig. 3, Fig. 4; Said second air channel 14 also can adopt following arrangement to be arranged in the test storehouse 1; Be positioned at the return air orifice plate 5 on test 1 top, storehouse, the air-out orifice plate 4 that is positioned at test 1 bottom, storehouse all becomes the orifice plate to test storehouse 1 air intake, air channel plate 3 becomes the orifice plate to second air channel, 14 return air.
With reference to Fig. 5; Said second air channel 14 also can adopt following arrangement to be arranged in the test storehouse 1; Be positioned at the return air orifice plate 5 on test 1 top, storehouse, the air-out orifice plate 4 that is positioned at test 1 bottom, storehouse all becomes the orifice plate to test storehouse 1 air intake; The left and right orifice plate that also is provided with to test storehouse 1 air intake in test storehouse 1, air channel plate 3 becomes the orifice plate to second air channel, 14 return air.
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 (10)
1. the orifice-plate type air channel structure of a volatile organic matter detection system; Comprise test storehouse (1); With the test door (2) that is connected of test storehouse (1), it is characterized in that, also be equiped with air channel plate (3) in the said test storehouse (1), air channel plate (3) top is equiped with air-out orifice plate (4); Air channel plate (3) bottom is equiped with return air orifice plate (5); This air channel plate (3), air-out orifice plate (4), return air orifice plate (5) form first air channel (6) with test storehouse (1) inwall, are equiped with at least one test storehouse circulating fan (7) in first air channel (6), and air-out orifice plate (4) is provided with air outlet (8) and return air inlet (20) with test storehouse (1) inwall and test door (2) inwall.
2. the orifice-plate type air channel structure of volatile organic matter detection system according to claim 1 is characterized in that, the edge of said air-out orifice plate (4) has rectangular-shaped, skewed or circular-arc fair water fin (9).
3. the orifice-plate type air channel structure of volatile organic matter detection system according to claim 1 is characterized in that, also is equiped with test storehouse well heater (11) in said first air channel (6).
4. the orifice-plate type air channel structure of volatile organic matter detection system according to claim 1 is characterized in that, is equiped with O-ring seal (12) between said test door (2) and the test storehouse (1).
5. the orifice-plate 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 (13); Form second air channel (14) between test storehouse (1) and the chuck (13), be equiped with jacketed evaporator (15), sheathed heater (16), chuck circulating fan (17) in this second air channel (14).
6. the orifice-plate type air channel structure of volatile organic matter detection system according to claim 5 is characterized in that, is equiped with insulation material (18) in the said chuck (14).
7. the orifice-plate 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 air channel structure of volatile organic matter detection system according to claim 1; It is characterized in that said test storehouse (1) inwall, test door (2) inwall, air channel plate (3) surface, air-out orifice plate (4) surface, return air orifice plate (5) surface, test storehouse circulating fan (7) surface scribble organic reagent and toasting more than 350 ℃.
9. the air channel structure of volatile organic matter detection system according to claim 1 is characterized in that, said air channel plate (3), air-out orifice plate (4), return air orifice plate (5) can adopt one of following arrangement to be arranged in the test storehouse (1): up-draught, following return air; Canyon, last return air; Left side blowing; Right return air; Right blowing, left return air.
10. the flow-guiding type air channel structure of volatile organic matter detection system according to claim 1 is characterized in that, said air-out orifice plate (4), return air orifice plate (5) are more than the 5mm with the gap of test storehouse (1) inwall and test door (2) inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102388728A CN102419274B (en) | 2011-08-19 | 2011-08-19 | Orifice-plate-type air duct structure of volatile organic compound detection system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102388728A CN102419274B (en) | 2011-08-19 | 2011-08-19 | Orifice-plate-type air duct structure of volatile organic compound detection system |
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| CN102419274A true CN102419274A (en) | 2012-04-18 |
| CN102419274B CN102419274B (en) | 2013-07-24 |
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| CN2011102388728A Expired - Fee Related CN102419274B (en) | 2011-08-19 | 2011-08-19 | Orifice-plate-type air duct structure of volatile organic compound detection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106680043A (en) * | 2016-11-21 | 2017-05-17 | 北京蓝色星语科技有限公司 | Disturbance sampling device and disturbance sampling method of biochemical harmful factors |
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| US20040026491A1 (en) * | 2001-10-29 | 2004-02-12 | Lockheed Martin Federal Systems | Hazardous material detection system for use with mail and other objects |
| CN101692025A (en) * | 2009-09-25 | 2010-04-07 | 东莞市升微机电设备科技有限公司 | Test system for detecting volatile organic compounds |
| CN201439054U (en) * | 2009-06-19 | 2010-04-21 | 上海天波自动化科技有限公司 | Formaldehyde emission climate box |
| CN201477001U (en) * | 2009-09-16 | 2010-05-19 | 河南省建筑科学研究院有限公司 | Test cabin with quantitative generation and purification function of gas pollutant |
| CN101749816A (en) * | 2009-12-25 | 2010-06-23 | 东莞市利安达环境科技有限公司 | Radon-removing air purifier |
| CN202305279U (en) * | 2011-08-19 | 2012-07-04 | 东莞市升微机电设备科技有限公司 | Orifice-plate type air duct structure of volatile organic compound (VOC) detection system |
-
2011
- 2011-08-19 CN CN2011102388728A patent/CN102419274B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040026491A1 (en) * | 2001-10-29 | 2004-02-12 | Lockheed Martin Federal Systems | Hazardous material detection system for use with mail and other objects |
| CN201439054U (en) * | 2009-06-19 | 2010-04-21 | 上海天波自动化科技有限公司 | Formaldehyde emission climate box |
| CN201477001U (en) * | 2009-09-16 | 2010-05-19 | 河南省建筑科学研究院有限公司 | Test cabin with quantitative generation and purification function of gas pollutant |
| CN101692025A (en) * | 2009-09-25 | 2010-04-07 | 东莞市升微机电设备科技有限公司 | Test system for detecting volatile organic compounds |
| CN101749816A (en) * | 2009-12-25 | 2010-06-23 | 东莞市利安达环境科技有限公司 | Radon-removing air purifier |
| CN202305279U (en) * | 2011-08-19 | 2012-07-04 | 东莞市升微机电设备科技有限公司 | Orifice-plate type air duct structure of volatile organic compound (VOC) detection system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106680043A (en) * | 2016-11-21 | 2017-05-17 | 北京蓝色星语科技有限公司 | Disturbance sampling device and disturbance sampling method of biochemical harmful factors |
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Granted publication date: 20130724 Termination date: 20170819 |