Filter module comprising sensor and method for determining the state of a filter element

Patent metadata

Field	Value
Publication number	US-2021245083-A1
Application number	US-202117173211-A
Country	US
Kind code	A1
Filing date	Feb 11, 2021
Priority date	Feb 12, 2020
Publication date	Aug 12, 2021
Grant date	—

Abstract

A filter module for filtering a fluid flow includes: a plurality of filter elements arranged parallel to one another in a fluid channel. A sensor is mounted on each filter element of the plurality of filter elements, each sensor being determining a loading state of a corresponding filter element. Each of the plurality of filter elements is a filter cartridge including plated filter medium. Each sensor is a flow sensor.

First claim

What is claimed is:

1 . A filter module for filtering a fluid flow, comprising:
a plurality of filter elements arranged parallel to one another in a fluid channel, wherein a sensor is mounted on each filter element of the plurality of filter elements, each sensor being configured to determine a loading state of a corresponding filter element, wherein each of the plurality of filter elements comprises a filter cartridge including plated filter medium, and wherein each sensor comprises a flow sensor.

2 . The filter module according to claim 1 , wherein each sensor is positioned on a clean gas side of the corresponding filter element.

3 . The filter module according to claim 2 , wherein each filter cartridge comprises a round flange having a central cut-out, and the sensor is provided in each case in a region of the flange.

4 . The filter module according to claim 1 , wherein the sensors are configured to measure volume flow or mass flow.

5 . The filter module according to claim 1 , wherein the sensors are configured to measure flow velocity.

6 . The filter module according to claim 1 , wherein the sensors are configured to measure differential pressure.

7 . A method for determining the loading state and/or aging state of the filter element in the filter module according to claim 1 , comprising the following steps:
a) measuring the flow of fluid through a particular filter element; b) comparing a measurement result from a) to flow values stored in a memory for the particular filter element; and c) deriving the loading state and/or aging state of the particular filter element based on a comparison carried out according to b).

8 . The method according to claim 7 , wherein the measurement in a) detects a flow velocity or a differential pressure of a fluid in the filter element.

9 . The method according to claim 7 , further comprising:
b′) checking whether the measurement drops below or exceeds a predefined limit value and/or whether a change of the measurement over time deviates from a stored empirical value; and subsequently d) outputting a signal.

10 . The method according to claim 9 , wherein the signal comprises a:
warning signal to a machine or equipment operator; deactivation signal to a machine or equipment operator; deactivation signal of a machine or equipment; trigger signal for a cleaning process of the filter element; trigger signal for a predictive maintenance order; or trigger signal for an order process of a replacement filter element.

11 . A system, comprising:
the filter module according to claim 1 , wherein the system comprises an energy generation system, an exhaust gas flow purification system, a turbomachine, or a production system.

Assignees

• Freudenberg Carl Kg

Inventors

• Kluck Stefan
• Tapper Renate

Classifications

• B01D46/58 Primary

  connected in parallel · CPC title

• B01D46/444

  by flow measuring · CPC title

• B01D46/525

  which comprises flutes · CPC title

• B01D46/0086 Primary

  Filter condition indicators · CPC title

• B01D46/2411

  Filter cartridges · CPC title