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US 4,643,745 AGranted
Air cleaner using ionic wind
AssigneeNippon Soken, Inc.
InventorsNobuyoshi Sakakibara, Tadashi Hattori, Kazuhiko Miura, Hiroki Noguchi, Akira Fukami, Teiichi Nabeta
Life of this patent
Estimating the term…
Abstract
An air cleaner has a discharge electrode member, an intermediate electrode member, and a counter electrode member disposed opposed and spaced apart from each other. A voltage source is connected between the discharge member and the intermediate member for generating ionic wind. A further voltage source is connected between the intermediate member and the counter member for accelerating the ionic wind such that the gradient direction of the electric field between the discharge member and the intermediate member is identical to that between the intermediate member and the counter member.
Claims14
An air cleaner using ionic wind comprising:
- a case having an air passage therethrough;
- discharge electrode means arranged in said air passage, said discharge electrode means including a plurality of electrode members having sharpened portions, respectively, said sharpened portions being distributed in a plane across said air passage;
- intermediate electrode means arranged in said air passage at a predetermined distance from said discharge electrode means along said air passage, said intermediate electrode means including electrode members which extend in parallel to each other in a plane across said air passage and which have diametrical dimensions considerably larger than those of said sharpened portions of said discharge electrode means so that corona discharge occurs on or adjacent to said sharpened portions of said discharge electrode means upon the application of voltage between said discharge and intermediate electrode means;
- counter electrode means for collecting dust arranged in said air passage at a predetermined distance from said intermediate electrode means along said air passage on a side remote from said discharge electrode means, said counter electrode means including a plurality of plate electrodes arranged parallel to each other and generally perpendicular to said air passage;
- a first electric source for applying voltage between said discharge electrode means and said intermediate electrode means to cause ionization on or adjacent to said discharge electrode means to generate ionic wind said discharge electrode means through said intermediate electrode means;
- and
- a second electric source for applying voltage between said intermediate electrode means and said counter electrode means, the gradient direction of the electric field by said second electric source being identical to that by said first electric source with said intermediate electrode means grounded, the electric field of said second electric source applied between said intermediate electrode means and said counter electrode means causing the generated ionic wind to be accelerated.
4 more elements
An air cleaner ionic wind comprising:
- a case having an air passage therethrough;
- discharge electrode means arranged in said air passage, said discharge electrode means including a plurality of electrode members having sharpened portions, respectively, said sharpened portions being distributed in a plane across said air passage;
- intermediate electrode means arranged in said air passage at a predetermined distance from said discharge electrode means along said air passage, said intermediate electrode means including electrode members which extend in parallel to each other in a plane across said air passage and which have diametrical dimensions considerably larger than those of said sharpened portions of said discharge electrode means so that corona discharge occurs on or adjacent to said sharpened portions of said discharge electrode means upon the application of voltage between said discharge and intermediate electrode means;
- counter electrode means arranged in said air passage at a predetermined distance from said intermediate electrode means along said air passage on a side remote from said discharge electrode means;
- dust collecting electrode means provided on a side of the counter electrode means remote from the intermediate electrode means;
- a first electric source for applying voltage between said discharge electrode means and said intermediate electrode means to cause ionization on or adjacent to said discharge electrode means to generate ionic wind from said discharge electrode means through said intermediate electrode means;
- a second electric source for applying voltage between said intermediate electrode means and said counter electrode means, the gradient direction of the electric field by said second electric source being identical to that by said first electric source with said intermediate electrode means grounded, the electric field of said second electric source applied between said intermediate electrode means and said counter electrode means causing the generated ionic wind to be accelerated;
- and
- a third electric source for applying voltage between components of said dust collecting electrode means.
6 more elements
An air cleaner using ionic wind comprising:
- a case having two symmetrical portions, each of said symmetrical portions having an air inlet at the side of the case, an air outlet at the bottom of the case, and an air passage, each of said symmetrical portions further comprising:
- discharge electrode means arranged in said air passage, said discharge electrode means including a plurality of electrode members having sharpened portions, respectively, said sharpened portions being distributed in a plane across said air passage;
- intermediate electrode means arranged in said air passage at a predetermined distance from said discharge electrode means along said air passage, said intermediate electrode means including electrode members which extend in parallel to each other in a plane across said air passage and which have diametrical dimensions considerably larger than those of said sharpened portions of said discharge electrode means so that corona discharge occurs on or adjacent to said sharpened portions of said discharge electrode means upon the application of voltage between said discharge and intermediate electrode means;
- counter electrode means for collecting dust arranged in said air passage at a predetermined distance from said intermediate electrode means along said air passage on a side remote from said discharge electrode means;
- a first electric source for applying voltage between said discharge electrode means and said intermediate electrode means to cause ionization on or adjacent to said discharge electrode means to generate ionic wind from said discharge electrode means through said intermediate electrode means;
- and
- a second electric source for applying voltage between said intermediate electrode means and said counter electrode means, the gradient direction of the electric field by said second electric source being identical to that by said first electric source with said intermediate electrode means grounded, the electric field of said second electric source applied between said intermediate electrode means and said counter electrode means causing the generated ionic wind to be accelerated.
4 more elements
Dependencies are inferred from the claim text.