US 12,109,521 B2
Cleaning device and method for cleaning a filter arrangement
Marco Dietrich, Schwaebisch-Hall (DE); and Walter Mack, Mainhardt (DE)
Assigned to MACK GMBH, Waldenburg (DE)
Filed by Mack GmbH, Waldenburg (DE)
Filed on Jun. 13, 2023, as Appl. No. 18/209,038.
Application 18/209,038 is a continuation of application No. PCT/EP2021/080025, filed on Oct. 28, 2021.
Claims priority of application No. 10 2020 133 470.2 (DE), filed on Dec. 15, 2020.
Prior Publication US 2023/0347269 A1, Nov. 2, 2023
Int. Cl. B01D 41/04 (2006.01); F01N 3/023 (2006.01)
CPC B01D 41/04 (2013.01) [F01N 3/0237 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A cleaning device for cleaning a filter arrangement which comprises a first fluid connection, a second fluid connection, and a filter assembly arranged between the first fluid connection and the second fluid connection and which has a surface to which contaminants can adhere, comprising:
a generator device for generating a gas-liquid mixture, the generator device comprising a receiving chamber for receiving a liquid, and a pressurized gas generating device which is connected to the receiving chamber via a gas valve;
a first pipe assembly connected to the generator device and comprising a first pipe connection which can be connected to the first fluid connection so as to direct the gas-liquid mixture under pressure into the filter arrangement; and
a second pipe assembly comprising a second pipe connection which can be connected to the second fluid connection and which is connected to a collection device for collecting the gas-liquid mixture passed through the filter arrangement and contaminants entrained from the filter arrangement,
wherein the first pipe assembly is constructed such that the gas-liquid mixture generated by the generator device is guided under pressure against the force of gravity upwards, then through a deflection pipe section and finally downwards towards the filter arrangement,
wherein a liquid spraying device comprises a spray bar extending transversely to a direction of flow of the gas-liquid mixture in the second pipe assembly, a plurality of spray nozzles arranged on the spray bar and directed towards the filter assembly, a drive shaft connected to the spray bar, and a drive motor connected to the drive shaft, wherein the drive motor is located outside the second pipe assembly, the spray bar is located inside the second pipe assembly, and the drive shaft passes through the second pipe assembly,
wherein the second pipe assembly comprises a siphon-like pipe section in which spray liquid and contaminants separated from the filter assembly by way of the liquid spraying device can collect.