Monitoring devices for air filtration systems

Patent metadata

Field	Value
Publication number	US-11925890-B2
Application number	US-201917288486-A
Country	US
Kind code	B2
Filing date	Oct 23, 2019
Priority date	Oct 25, 2018
Publication date	Mar 12, 2024
Grant date	Mar 12, 2024

Abstract

Aspects herein include monitoring devices for filtration systems. An embodiment of the monitoring device can include a first fluid conduit and a first pressure sensor, wherein the first pressure sensor is in fluid communication with the first fluid conduit. The monitoring device can also include a second fluid conduit and a second pressure sensor, wherein the second pressure sensor is in fluid communication with the second fluid conduit. The monitoring device can also include a control circuit in electronic communication with the first pressure sensor and the second pressure sensor. The monitoring device can also include a housing, wherein the first pressure sensor, the second pressure sensor and the control circuit are all disposed within the housing. Other embodiments are also included herein.

First claim

The invention claimed is:

1. A monitoring device for a filtration system comprising:
a first fluid conduit;
a first pressure sensor, wherein the first pressure sensor is in fluid communication with the first fluid conduit;
a second fluid conduit;
a second pressure sensor, wherein the second pressure sensor is in fluid communication with the second fluid conduit;
a third fluid conduit and a third pressure sensor in fluid communication with the third fluid conduit, wherein the third fluid conduit is in fluid communication with a compressed gas supply;
a control circuit in electronic communication with the first pressure sensor and the second pressure sensor; and
a housing, wherein the first pressure sensor, the second pressure sensor and the control circuit are all disposed within the housing.

2. The monitoring device of claim 1 , wherein the control circuit initiates a transitory change in a data recording parameter based on a signal received from the third pressure sensor.

3. The monitoring device of claim 2 , wherein the transitory change in the data recording parameter comprises increasing the resolution of the recorded data.

4. The monitoring device of claim 1 , further comprising an accelerometer, wherein the accelerometer is in electronic communication with the control circuit.

5. The monitoring device of claim 4 , wherein the accelerometer is disposed within the housing such that vibrations incident upon a contact surface of the housing are attenuated by less than 10% as incident upon the accelerometer.

6. The monitoring device of claim 1 , further comprising a microphone, wherein the microphone is in electronic communication with the control circuit.

7. The monitoring device of claim 1 , wherein the control circuit is configured to calculate a value correlated to a fluid flow rate through the filtration system based on a static pressure value, wherein the static pressure value is determined by a signal from one of the first pressure sensor and the second pressure sensor.

8. The monitoring device of claim 1 , wherein the control circuit is configured to calculate a value correlated to a fluid flow rate through the filtration system based on a differential pressure value and a static pressure value, wherein the differential pressure value is determined by a signal from the first pressure sensor relative to the second pressure sensor and the static pressure value is determined by a signal from one of the first pressure sensor and the second pressure sensor.

9. The monitoring device of claim 1 , wherein the first pressure sensor and second pressure sensor generate signals at variable time intervals.

10. The monitoring device of claim 9 , wherein the variable time intervals are determined based upon a rate of change of the first or second pressure sensor signals.

11. The monitoring device of claim 1 , further comprising a temperature sensor.

12. The monitoring device of claim 1 , further comprising a user output device, wherein the control circuit calculates a time for replacement of a filter element and issues a notification regarding the time for replacement through the user output device.

13. The monitoring device of claim 12 , wherein the control circuit calculates the time for replacement of the filter element based on
signals from the first pressure sensor and the second pressure sensor; and
an external input.

14. The monitoring device of claim 1 , wherein the control circuit initiates an alarm if a predetermined alarm condition has been met.

15. The monitoring device of claim 14 , wherein the alarm condition includes at least one of:
a maximum value for a signal received from the first pressure sensor;
a minimum value for a signal received from the first pressure sensor;
a maximum value for a signal received from the second pressure sensor;
a minimum value for a signal received from the second pressure sensor;
a maximum difference between a value for a signal received from the first pressure sensor and a value for a signal received from the second pressure sensor; and
a minimum difference between a value for a signal received from the first pressure sensor and a value for a signal received from the second pressure sensor.

16. An air filtration system comprising:
a housing configured to receive a filter element therein through which a fluid flow passes, the filter element comprising an upstream side and a downstream side; and
a monitoring device comprising:
a first fluid conduit in fluid communication the upstream side of the filter element;
a first pressure sensor, wherein the first pressure sensor is in fluid communication with the first fluid conduit;
a second fluid conduit in fluid communication with the downstream side of the filter element;
a second pressure sensor, wherein the second pressure sensor is in fluid communication with the second fluid conduit;
a third fluid conduit and a third pressure sensor in fluid communication with the third fluid conduit, wherein the third fluid conduit is in fluid communication with a compressed gas supply;
a monitoring device control circuit in electronic communication with the first pressure sensor and the second pressure sensor; and
a housing, wherein the first pressure sensor, the second pressure sensor and the control circuit are all disposed within the housing.

17. The dust collector of claim 16 , wherein the filtration system further comprises a filtration system control circuit.

18. The dust collector of claim 17 , wherein the filtration system control circuit is not in electronic communication with the monitoring device control circuit.

19. A monitoring device for a filtration system comprising:
a first fluid conduit;
a first pressure sensor, wherein the first pressure sensor is in fluid communication with the first fluid conduit;
a second fluid conduit;
a second pressure sensor, wherein the second pressure sensor is in fluid communication with the second fluid conduit; and
a control circuit in electronic communication with the first pressure sensor and the second pressure sensor;
a housing, wherein the first pressure sensor, the second pressure sensor and the control circuit are all disposed within the housing, and wherein the first fluid conduit comprises a first internal portion disposed within the housing and a first external portion disposed outside the housing, and wherein the second fluid conduit comprises a second internal portion disposed in the housing and a second external portion disposed outside the housing; and
an accelerometer, wherein the accelerometer is in electronic communication with the control circuit, wherein the accelerometer is disposed within the housing such that vibrations incident upon a contact surface of the housing are attenuated by less than 10% as incident upon the accelerometer.

Assignees

• Donaldson Co Inc

Inventors

• Wessels Wade A
• Vitko Peter P
• Nelson Brent R

Classifications

• B01D2258/06

  Polluted air · CPC title

• B01D46/71

  with pressurised gas, e.g. pulsed air · CPC title

• B01D46/72

  with backwash arms, shoes or nozzles · CPC title

• B01D46/446 Primary

  by pressure measuring · CPC title

• B01D46/44

  controlling filtration · CPC title