Portable air flow meter fabricated using 3D printer

A portable air flow meter fabricated using a 3D printer comprising:

• a cylindrical housing having a nozzle cover formed integrally therewith in the front thereof into which air flows from an outside such that fabrication using the 3D printer is possible, a fixing cover on which a finishing cover is installed and which is integrally formed in the rear thereof, and a handle formed integrally therewith at an upper portion thereof;
• an inflow cover installed in front of the nozzle cover, formed to pass therethrough in an axial direction to cause the air flowing in from the outside to flow into the cylindrical housing, and having first flow straightening plates installed therein;
• a nozzle panel which is installed inside the nozzle cover and on which a multi-nozzle made up of nozzles that measure an air flow passing through the first flow straightening plates and have cross-sectional areas different from each other is detachably installed;
• a second flow straightening plate which is disposed behind the nozzle panel and on which cylinder type opening/closing devices moving dampers forward/backward to open/close the nozzles through the dampers are installed;
• and
• a blower disposed behind the second flow straightening plate, made up of a motor and an impeller rotatably connected coaxially with the motor, suctioning air passing through the second flow straightening plate, and ejecting the air to an ejector formed on a rear outer circumferential surface of the cylindrical housing,
• wherein an air inductor disposed between the impeller and the second flow straightening plate to induce the air passing through the second flow straightening plate toward the blower is integrally formed inside the cylindrical housing.