Air sampling device and method
a technology of air sampling and airflow, which is applied in the field of air sampling devices, can solve the problems of high airflow rate, high cost, and high noise of active air-moving devices, and achieve the effects of high airflow rate, high efficiency and low cos
Inactive Publication Date: 2006-06-15
SIGNATURE SCI
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Benefits of technology
The present invention is an air sampling device that uses an airfoil shaped frame with media members to collect particulate matter as air passes through the device. The airfoil shape creates differential pressures and velocities, allowing for the separation of particulate matter based on their size and mass. The device can be mounted on a moveable vehicle, such as a drone or ground vehicle, for efficient and mobile air sampling. Additionally, the device can also sample airborne chemicals using a second airfoil shape and an absorbent carbon based bed. The technical effects of the invention include effective and lightweight air sampling with built-in filtration capabilities, as well as a highly mobile and efficient platform for air sampling.
Problems solved by technology
The collection of statistically significant quantities of particulates and contaminants of interest in atmospheric analysis typically requires high rates of airflow.
Such active air-moving devices are generally costly, noisy, and heavy, and require a power source.
Method used
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[0024]FIGS. 1 through 7 illustrate Applicants' novel air sampler (10). Air sampler (10) may include a frame (12) at least a portion of which engages an absorbent filter media (13). Frame (12) typically is comprised of at least one airfoil member, the figure here showing an embodiment including an upper airfoil member (14) and a lower airfoil member (16). The members typically have a multiplicity of through holes (14A and 16A), and may be spaced apart so as to define a leading edge gap (20) and a trailing edge gap (22). End plates (18A and 18B) provide support and location for the upper and lower airfoil members. Between the upper and lower airfoil members, which are typically provided as illustrated in the cross-section of FIG. 2, and are bowed away from each other, there may be a pleated or cup shaped frame member (17). The cup shaped frame member may have an open end (17A) facing the leading edge gap (20) and a closed end (17B) opposite the open end, typically comprising a longitu...
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Abstract
A lightweight, economical, mass-producible, reusable airfoil can be deployed in an airspace while in or attached to any moving vehicle for the purpose of collecting air samples. A frame has an airfoil shape that provides pressure differentials that preferentially direct particulates and contaminants of differing size and mass to different areas of an absorbent media attached or integral to the frame. The absorbent media are readily detachable from the frame for sanitary and efficient transfer to facilities where the samples can be analyzed.
Description
[0001] This application is a continuation application of and claims priority from U.S. application Ser. No. 10 / 601,302 filed Jun. 6, 2003 and incorporates by reference the '302 application as if it were fully printed herein. U.S. application Ser. No. 10 / 601,302 claimed priority from provisional patent application No. 60 / 387,228 filed Jun. 7, 2002.FIELD OF INVENTION [0002] This invention pertains to the field of air sampling devices, more specifically, an air sampler in the general shape of an airfoil and a method for sampling air using the airfoil shaped sampler. BACKGROUND [0003] The collection of statistically significant quantities of particulates and contaminants of interest in atmospheric analysis typically requires high rates of airflow. Electro-mechanical air-moving devices such as pumps, fans, and blowers force air over devices such as filters and absorbents in order to provide the required airflow in typical sampling applications. Such active air-moving devices are generall...
Claims
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IPC IPC(8): G01N1/22
CPCG01N1/2273G01N2001/225G01N2001/2285
Inventor SCHIMMOLLER, BRIAN J.BARTLETT, MATTHEW F.
Owner SIGNATURE SCI