Multifunctional dust trap

Patent metadata

Field	Value
Publication number	US-11754429-B2
Application number	US-202016949697-A
Country	US
Kind code	B2
Filing date	Nov 11, 2020
Priority date	Nov 11, 2020
Publication date	Sep 12, 2023
Grant date	Sep 12, 2023

Abstract

A multifunctional dust trap for reducing an acoustic noise and dust filtering comprising: an inlet connected to a gas inlet of a gas meter; a chamber, connected to the inlet, to receive a flow of a gas, comprises: a first wall to deflect the flow of the gas in a first direction, wherein the first wall directs the flow of the gas into a cross sectional area of the chamber, which reduces a velocity of the deflected gas such that a centrifugal force guides a plurality of dust particles towards a base of the chamber; and a second wall to deflect the flow of the gas in a second direction; and an outlet, attached to the chamber, to enable an exit of a clean flow of the gas away from one or more flow inlets of a flow tube installed within the gas meter.

First claim

What is claimed is:

1. A multifunctional dust trap for reducing an acoustic noise and dust filtering, the multifunctional dust trap comprising:
an inlet connected to a gas inlet of a gas meter;
a chamber, connected to the inlet, to receive a flow of a gas and to reduce an acoustic noise by a reflection at one or more inner surfaces of the chamber, wherein the chamber comprises:
a first wall to deflect the flow of the gas in a first direction, wherein the first wall directs the flow of the gas into a cross sectional area of the chamber, which reduces a velocity of the deflected gas such that a centrifugal force guides a plurality of dust particles carried by the gas towards a base of the chamber; and
a second wall to deflect the flow of the gas in a second direction, wherein the flow of the gas is deflected from the first direction to the second direction; and
an outlet, attached to the chamber, to enable an exit of a clean flow of the gas from the multifunctional dust trap such that the clean flow of the gas is directed away from one or more flow inlets of a flow tube installed within the gas meter resulting in a smooth flow of the gas in the flow tube, and
a plurality of ribs extending vertically in an upward direction from the base and transverse a direction of the flow of the gas, and wherein each of the plurality of ribs and/or one or more inner surfaces of the multifunctional dust trap comprises a coating of a sticky material.

2. The dust trap of claim 1 , wherein each of plurality of ribs is made up of at least one material selected from, a second material, a natural plastic, a synthetic plastic, a natural rubber, a synthetic rubber, a metal, a glasball filled Polybutylene Terephthalate (PBT) material, a glasball filled Polyoxymethylene (POM) material, or a combination thereof.

3. The dust trap of claim 1 , wherein the chamber further comprises a plurality of conductive plates arranged parallel to each other that can be electrically charged for attracting the plurality of dust particles.

4. The dust trap of claim 3 , wherein at least one of the plurality of conductive plates is a negatively charged plate and one or more of the plurality of conductive plates are positively charged plates.

5. The dust trap of claim 1 , wherein the chamber further comprises an acoustic mat attached to the base and/or the one or more inner surfaces of the chamber.

6. The dust trap of claim 1 , wherein the outlet comprises a filter having a filter pad for filtering a plurality of micro-dust particles from the deflected flow of the gas to generate the clean flow of the gas.

7. The dust trap of claim 6 , wherein a lower conductive grid and an upper conductive grid sandwiching the filter pad form a capacitor for a capacitive and/or a resistance measurement of a degree of pollution of the filter.

8. The dust trap of claim 1 , wherein the inlet further comprises an inlet cavity to fixedly attach the multifunctional dust trap with the gas inlet of the gas meter.

9. A multifunctional dust trap for reducing an acoustic noise and dust filtering, the dust trap comprising:
an inlet to be connected to a gas inlet of a gas meter;
a chamber connected to the inlet, to receive a flow of a gas and to reduce an acoustic noise by a reflection at one or more inner surfaces of the chamber, wherein the chamber comprises:
a first wall to deflect the flow of the gas in a first direction, wherein the first wall directs the flow of the gas into a cross sectional area of the chamber, which reduces a velocity of the deflected gas such that a centrifugal force guides a plurality of dust particles carried by the gas towards a base of the chamber;
a second wall to deflect the flow of the gas in a second direction, wherein the flow of the gas is deflected from the first direction to the second direction;
an acoustic mat, fixedly attached to the base and/or the one or more inner surfaces of the chamber; and
a plurality of ribs extending vertically in an upward direction from the base and transverse a direction of the flow of the gas, wherein the acoustic mat and/or each of the plurality of ribs absorbs an acoustic noise; and
an outlet, attached to the chamber, to enable an exit of a clean flow of the gas from the multifunctional dust trap such that the clean flow of the gas is directed away from one or more flow inlets of a flow tube installed within the gas meter resulting in a smooth flow of the gas in the flow tube.

10. The dust trap of claim 9 , wherein the inlet further comprises an inlet cavity to fixedly attach the multifunctional dust trap with the gas inlet of the gas meter.

11. The dust trap of claim 9 , wherein the ribs are made up of at least a material selected from one of, a natural plastic, a synthetic plastic, a natural rubber, a synthetic rubber, a metal, a glasball filled Polybutylene Terephthalate (PBT) material, a glasball filled Polyoxymethylene (POM) material, or a combination thereof.

12. The dust trap of claim 9 , wherein one or more inner surfaces of the multifunctional dust trap and/or each of the plurality of ribs comprises a coating of a sticky material.

13. The dust trap of claim 9 , wherein the chamber further comprises a plurality of conductive plates arranged parallel to each other such that each of the plurality of conductive plates is electrically charged for attracting the plurality of dust particles.

14. The dust trap of claim 13 , wherein at least one of the plurality of conductive plates is a negatively charged plate and one or more of the plurality of conductive plates are positively charged plates.

15. The dust trap of claim 9 , wherein the outlet comprises a filter having a filter pad for filtering a plurality of micro-dust particles from the flow of the gas.

16. The dust trap of claim 15 , wherein a lower conductive grid and an upper conductive grid sandwiching the filter pad forms a capacitor such that a capacitance and/or a resistance value of the capacitor is used to evaluate a degree of pollution of the filter.

17. A method comprising steps of:
allowing a flow of a gas through an inlet of a multifunctional dust trap;
deflecting the flow of the gas to a first direction, through a first wall of a chamber, such that a velocity of the gas is reduced and a centrifugal force guides a plurality of dust particles from the gas to a base of the chamber;
collecting the plurality of dust particles within a plurality of ribs, attached to a base of the chamber;
absorbing an acoustic noise by each of the plurality of ribs;
deflecting the flow of the gas to a second direction through a second wall of the chamber; and
filtering a plurality of micro-dust particles from the deflected flow of the gas in the second direction by using a filter having a filter pad, attached to an outlet of the multifunctional dust trap.

18. The method of claim 17 , further comprising a step of generating an electrostatic charge in the filter pad such that the generated electrostatic charge is used to measure a capacity and/or a resistance of the filter.

Assignees

• Honeywell Int Inc

Inventors

• Flerlage Norbert
• Lampe-Juergens Christian
• Meimberg Tobias
• Wuchrer Andreas
• Berghegger Ralf Schroeder Genannt

Classifications

• G01F15/125 Primary

  Filters · CPC title

• B01D45/16

  generated by the winding course of the gas stream {, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes} · CPC title

• B01D46/0032

  using electrostatic forces to remove particles, e.g. electret filters · CPC title

• B01D46/4236

  Reducing noise or vibration emissions · CPC title