Air-filter arrangement
AssigneeElfi Elektrofilter Aktiebolag
InventorJan-Olof Wallin
Life of this patent
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Abstract
An air filter arrangement is provided for filtration of particles in an airflow having an airflow direction. The air filter arrangement includes an electrostatically charged filter, a first ionization device, and a second ionization device. The first ionization device is arranged upstream of the electrostatically charged filter and the second ionization device is arranged downstream of the electrostatically charged filter. An air filtering apparatus is also described.
Claims9
An air filter arrangement for filtration of particles in an airflow having an airflow direction, said air filter arrangement comprising;
- an electrostatically charged filter;
- a first ionisation device;
- and
- a second ionisation device,
- wherein said first ionisation device is arranged upstream of said electrostatically charged filter and said second ionisation device is arranged downstream of said electrostatically charged filter,
- wherein said electrostatically charged filter is electrically isolated from an environment external to said electrostatically charged filter,
- wherein said first ionisation device comprises a first ionisation electrode and a second ionisation electrode, and
- wherein said first ionisation electrode and said second ionisation electrode of said first ionization device have mutually opposite polarities.
An air filtering apparatus comprising an air filter arrangement comprising:
- an electrostatically charged filter;
- a first ionisation device;
- and
- a second ionisation device,
- wherein said first ionisation device is arranged upstream of said electrostatically charged filter and said second ionisation device is arranged downstream of said electrostatically charged filter, and
- wherein said electrostatically charged filter is electrically isolated from an environment external to said electrostatically charged filter,
- wherein said first ionisation device comprises a first ionisation electrode and a second ionisation electrode, and
- wherein said first ionisation electrode and said second ionisation electrode of said first ionization device have mutually opposite polarities.
Dependencies are inferred from the claim text.