US 12,128,343 B2 · Filter arrangement and method

Abstract

The invention relates to a filter arrangement comprising a filter cartridge, having an opening and a wall which is formed by a filter medium and has an inner side delimiting a clean side of the filter and an outer side delimiting a raw side of the filter, a fan for conveying air to be purified first through the wall and subsequently through the opening of the filter cartridge, and a purification device, which is configured to convey a jet of compressed air through the opening into the filter cartridge and through the wall out of the filter cartridge, for conveying dirt away from an outer wall of the wall. The invention also relates to a method for detecting a leak of a filter cartridge, wherein the filter cartridge has an opening and a wall which is formed by a filter medium and has an inner side delimiting a clean side of the filter and an outer side delimiting a raw side of the filter.

Claims17

Dependent claims

A filter arrangement comprising

a filter cartridge, having an opening and a wall which is formed by a filter medium and has an inner side delimiting a clean side of the filter and an outer side delimiting a raw side of the filter,
a fan for conveying air to be purified first through the wall and subsequently through the opening of the filter cartridge,
a purification device, which is configured to convey a jet of compressed air through the opening into the filter cartridge and through the wall out of the filter cartridge, for conveying dirt away from an outer wall of the wall, and
a sensor configured to determine a force acting on a measurement region on the basis of the jet of compressed air,
wherein the sensor is designed as a membrane, and
wherein the measurement region is arranged at a lower side of the filter cartridge which is located opposite the opening.

3 more elements

A method for detecting a leak of a filter cartridge, wherein the filter cartridge has an opening and a wall which is formed of a filter medium and which has an inner side delimiting a clean side of the filter and an outer side delimiting a raw side of the filter, said method having the steps of:

supplying a jet of compressed air through the opening into the filter cartridge;
transmitting a sensor signal, which is generated by a sensor designed as a membrane and on account of the jet of compressed air, to a control unit;
and
determining a force acting on a measurement region, which is arranged at a lower side of the filter cartridge and located opposite the opening, as a result of the jet of compressed air.

1 more element

Dependencies are inferred from the claim text.

Filter arrangement and method

Life of this patent

Filter arrangement and method

Life of this patent

Abstract

Claims17