US 11,747,032 B2
Air filter essentially for use in woodworking workplace
Sam Su, Taichung (TW)
Assigned to JPW INDUSTRIES INC., Lavergne, TN (US)
Filed by YEN SHEN ELECTRIC IND. CO., LTD., Taichung (TW)
Filed on May 25, 2021, as Appl. No. 17/329,179.
Claims priority of application No. 110115389 (TW), filed on Apr. 28, 2021.
Prior Publication US 2022/0349596 A1, Nov. 3, 2022
Int. Cl. B01D 46/00 (2022.01); B01D 46/10 (2006.01); B01D 46/42 (2006.01); B01D 46/48 (2006.01); F24F 8/108 (2021.01); F24F 13/20 (2006.01); F24F 13/28 (2006.01); B01D 46/52 (2006.01)
CPC F24F 8/108 (2021.01) [B01D 46/0005 (2013.01); B01D 46/521 (2013.01); F24F 13/20 (2013.01); F24F 13/28 (2013.01); B01D 2273/30 (2013.01); F24F 2013/205 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An air filter essentially for use in woodworking workplaces, comprising:
a casing having a top panel, a bottom panel and two sidewalls, the casing having an inlet anteriorly and an outlet, the casing having therein an inner blocking wall seamlessly connected to the top panel and the bottom panel, wherein left and right edges of the inner blocking wall extend rearward to form two inner sidewalls, respectively, wherein the two inner sidewalls are seamlessly connected to the top panel and the bottom panel, and the rear ends of the two inner sidewalls are seamlessly connected to the two sidewalls, wherein the two inner sidewalls are each penetrated by a through hole, and the two through holes face each other, wherein the through holes of the two inner sidewalls are in communication with the inlet, wherein the casing further has a curved panel bending in its thickness direction, such that its two edges seamlessly connect to the two inner sidewalls, allowing the curved panel and the two inner sidewalls to together define a receiving space, the receiving space being in communication with the outlet, the inner blocking wall being spaced apart from the inlet by a predetermined distance, wherein left and right lateral edges of the inner blocking wall are spaced apart from the two sidewalls by a predetermined distance;
a filter gauze disposed at the casing and covering the inlet;
a motor fixedly disposed at the casing and disposed in the receiving space; and
a plurality of whizzer blades disposed at the motor and in the receiving space, wherein the curved panel curves to an extent corresponding in curvature to part of outer edges of the whizzer blades and is spaced apart from the whizzer blades by a predetermined distance, wherein the whizzer blades axially face the through holes of the two inner sidewalls and are driven by the motor to draw in air via the through holes of the two inner sidewalls and then discharge the air via the outlet.