초록 ▼

A portable and mobile multi-stage filtering system is disclosed capable of filtering particulate of the size of one micron. An external canister filter capable of filtering down to at least 0.5 microns is connected to and located external to the cabinet of the airtight filtering system. The cabinet

A portable and mobile multi-stage filtering system is disclosed capable of filtering particulate of the size of one micron. An external canister filter capable of filtering down to at least 0.5 microns is connected to and located external to the cabinet of the airtight filtering system. The cabinet contains a centrally located high speed motor driving a high capacity vacuum pump completely surrounded by thermal and acoustical insulation. The air filtering path includes a plurality of baffles defining a serpentine path for exhausting the air into a series of plenums of increasing volume which communicates with a ULPA filter capable of filtering down to 0.12 micron. The plenums are also surrounded by acoustical and thermal insulation which has the effect of lowering the noise of the filtering system and increasing the efficiency of the total system.

대표청구항 ▼

A self-contained portable and mobile filtering system comprising: a self-contained structure containing a thermally and acoustically insulated, centrally located high speed motor connected to and driving a high capacity vacuum pump; a filtering air path comprising said high capacity vacuum pump havi

A self-contained portable and mobile filtering system comprising: a self-contained structure containing a thermally and acoustically insulated, centrally located high speed motor connected to and driving a high capacity vacuum pump; a filtering air path comprising said high capacity vacuum pump having a vacuum side and a pressure side for causing a high velocity air flow in said filtering air path; an ULPA filter (ultra low penetration air) having a discharge area on one side and a second side located within said structure and connected with said vacuum pump to form part of said filtering air path; a plurality of acoustically insulated baffles forming a serpentine air path located within said structure intermediate said vacuum pump and said ULPA filter and connected to form part of said filtering air path; said baffles providing an expanding cross sectional area for attenuating noise generated by said vacuum pump and for lowering the velocity of the filtered air in said filtering air path from said pump to said ULPA filter; a plurality of air exhaust ports in said structure located in the proximity of said discharge area of said ULPA filter for exhausting the low velocity filtered air passing through said ULPA filter.