SYSTEMS AND METHODS FOR REMOVING ULTRA-FINE PARTICLES FROM AIR
First Claim
1. A respirator for providing purified air into an enclosed space, the respirator comprising:
- a housing having a top wall connected to a bottom wall with a pair of opposing side walls;
at least one fan configured to draw unfiltered air into the housing and generate a positive pressure air flow;
a primary filter module disposed within the housing, the primary filter module including at least one primary filter, the positive pressure air flow provided to a surface of the primary filter at a low face velocity, the at least one primary filter removing ultra-fine particles from the positive pressure air flow and outputting the purified air; and
an outlet port through the housing, the outlet port receiving the purified air from the primary filter module and directing the purified air to the enclosed space.
5 Assignments
0 Petitions
Accused Products
Abstract
Implementations described and claimed herein provide systems and methods systems and methods for removing ultra-fine particles from air. In one implementation, a low power air purifying respirator is configured for filtering ultra-fine particles using a primary filter having a composite filter media, which may be pleated and may provide no outgassing. The respirator includes at least one fan providing positive pressure air flow to the primary filter at a low face velocity. The at least one fan may comprise a plurality of serially stacked, axial fans configured to increase air pressure without increasing flow. One or more safety valves are disposed along the air flow path to prevent back flow and carbon dioxide buildup during use. A user device may be in communication with a controller in the respirator to control the operations of the respirator. The respirator may be connected to a mask via a hose.
36 Citations
67 Claims
-
1. A respirator for providing purified air into an enclosed space, the respirator comprising:
-
a housing having a top wall connected to a bottom wall with a pair of opposing side walls; at least one fan configured to draw unfiltered air into the housing and generate a positive pressure air flow; a primary filter module disposed within the housing, the primary filter module including at least one primary filter, the positive pressure air flow provided to a surface of the primary filter at a low face velocity, the at least one primary filter removing ultra-fine particles from the positive pressure air flow and outputting the purified air; and an outlet port through the housing, the outlet port receiving the purified air from the primary filter module and directing the purified air to the enclosed space. - View Dependent Claims (2, 6, 7, 9, 10, 11, 13, 15, 18, 19)
-
-
3-5. -5. (canceled)
-
8. (canceled)
-
12. (canceled)
-
14. (canceled)
-
16-17. -17. (canceled)
-
20. A method for purifying air, the method comprising:
-
drawing air into a housing through an air intake; generating a positive pressure air flow for the air using at least one fan; directing the positive pressure air flow to a surface of at least one primary filter; producing purified air by removing ultra-fine particles from the air using the at least one primary filter; and outputting the purified air into an enclosed space. - View Dependent Claims (21, 22)
-
-
23-60. -60. (canceled)
-
61. A system for filtering air, the system comprising:
-
a housing having an interior; a plurality of serially stacked, axial fans configured to draw air into the interior of the housing and generate a positive pressure air flow; a primary filter module disposed within the interior of the housing and including at least one primary filter for removing ultra-fine particles, the plurality of fans directing the positive pressure air flow through the at least one primary filter to provide purified air; and an outlet port through the housing, the outlet port receiving the purified air from the primary filter module and directing the purified air to an enclosed space at the positive pressure air flow. - View Dependent Claims (62, 63, 64, 65, 66)
-
-
67-115. -115. (canceled)
Specification