	US 11,992,174 B2
	Environmental control unit for dust and odor control
Dave Kette, Bay Village, OH (US)
Assigned to Enviropur, LLC, Bay Village, OH (US)
Filed by Enviropur LLC, Bay Village, OH (US)
Filed on May 20, 2022, as Appl. No. 17/749,512.
Application 17/749,512 is a continuation of application No. 16/165,019, filed on Oct. 19, 2018, granted, now 11,337,572.
Claims priority of provisional application 62/575,107, filed on Oct. 20, 2017.
Prior Publication US 2022/0273148 A1, Sep. 1, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. B01D 53/02 (2006.01); A47L 7/00 (2006.01); A47L 9/10 (2006.01); A47L 9/12 (2006.01); A47L 9/16 (2006.01); A47L 9/28 (2006.01); B01D 45/16 (2006.01); B01D 46/44 (2006.01); B01D 46/46 (2006.01); B01D 46/62 (2022.01); B04C 9/00 (2006.01); B01D 50/20 (2022.01)

CPC A47L 9/102 (2013.01) [A47L 7/0085 (2013.01); A47L 7/0095 (2013.01); A47L 9/12 (2013.01); A47L 9/122 (2013.01); A47L 9/16 (2013.01); A47L 9/2821 (2013.01); A47L 9/2842 (2013.01); A47L 9/2868 (2013.01); B01D 45/16 (2013.01); B01D 46/446 (2013.01); B01D 46/46 (2013.01); B01D 46/62 (2022.01); B04C 9/00 (2013.01); B01D 50/20 (2022.01); B01D 2279/40 (2013.01); B01D 2279/55 (2013.01); B04C 2009/002 (2013.01)]

20 Claims

1. An environmental control unit comprising:

a housing;

the housing configured to receive a tool contaminant stream from a tool coupled to the housing;

a cyclonic dust separator configured to separate solid particulate matter from the tool contaminant stream and exhaust an air stream from the cyclonic dust separator;

a filtration unit comprising at least one filter, the filtration unit positioned in the housing;

a blower positioned within the housing downstream of the filtration unit, wherein the blower creates negative air pressure within the housing to draw an area contaminant stream from an exterior of the environmental control unit into the housing, wherein the blower draws the air stream and the area contaminant stream through the filtration unit to produce a filtered mixture stream; and

a controller that controls power within the environmental control unit and comprises a soft start module configured to limit amperage of the environmental control unit to under 20 Amps, thereby maintaining current in-flow under electrical surges on start-up, while providing sufficient power for operation of the blower and the tool upon start-up of the blower, a second blower or the tool, wherein the tool draws electricity from the environmental control unit;

wherein the blower is driven by a variable speed controlled motor.