Omni-directional particulate extraction inlet

Patent metadata

Field	Value
Publication number	US-12109522-B2
Application number	US-202117484774-A
Country	US
Kind code	B2
Filing date	Sep 24, 2021
Priority date	Sep 24, 2021
Publication date	Oct 8, 2024
Grant date	Oct 8, 2024

Abstract

A flow control device is including a tubular body including a tubular wall with an inner surface, an outer surface, and one or more openings extending from the outer surface to the inner surface through the tubular wall; a faired body encircling the tubular body, the faired body including a radially inner surface and a radially outer surface; and a flow shield encircling the faired body, the flow shield including a radially inward surface and a radially outward surface, the radially inward surface being in a facing spaced relationship with the radially outer surface of the faired body defining a passageway therebetween, wherein the passageway is fluidly connected to the one or more openings.

First claim

What is claimed is:

1. A flow control device comprising:
a tubular body comprising a tubular wall with an inner surface, an outer surface, and one or more openings extending from the outer surface to the inner surface through the tubular wall;
a faired body encircling the tubular body, the faired body comprising a radially inner surface and a radially outer surface; and
a flow shield encircling the faired body, the flow shield comprising a radially inward surface and a radially outward surface, the radially inward surface being in a facing spaced relationship with the radially outer surface of the faired body defining a passageway therebetween,
wherein the passageway is fluidly connected to the one or more openings;
wherein:
the device includes a housing and a vacuum source coupled to an outlet of the housing;
the tubular body extends from a first tubular end to a second tubular end that are opposite each other, the second tubular end is connected to the housing;
the faired body is operationally connected to the tubular body proximate or at the first tubular end and located at a first distance away from the first tubular end, and the openings in the tubular body are located between the faired body and the first tubular end; and
the flow shield is operably connected to the tubular body proximate or at the first tubular end and covers the first tubular end, and the openings within the tubular body are located between the flow shield, and the faired body and encircles the faired body and the tubular wall.

2. The flow control device according to claim 1 , further comprising:
an inlet defined between the radially inward surface of the flow shield and the radially outer surface of the faired body, wherein the passageway extends from the inlet to the one or more openings.

3. The flow control device according to claim 2 , wherein the inlet is an omnidirectional orifice extending a full three hundred and sixty degrees around the faired body.

4. The flow control device according to claim 1 , wherein the passageway has a rotationally axisymmetric bell shaped curve.

5. The flow control device according to claim 1 , wherein the faired body has a bell shape and is rotationally axisymmetric.

6. The flow control device according to claim 1 , wherein the flow shield has a bell shape and is rotationally axisymmetric.

7. The flow control device according to claim 1 , wherein the faired body has a first faired body end and a second faired body end located opposite the first faired body end, and
wherein the radially outer surface of the faired body has a first outer diameter proximate or at the first faired body end and the radially outer surface of the faired body has a second outer diameter proximate or at the second faired body end, the second outer diameter being greater than the first outer diameter.

8. The flow control device according to claim 7 , wherein an outer diameter of the radially outward surface increases exponentially from the first outer diameter to the second outer diameter.

9. The flow control device according to claim 1 , wherein the flow shield has a first flow shield end and a second flow shield end located opposite the first flow shield end, and
wherein the radially inward surface of the flow shield has a first inner diameter proximate or at a first distance away from the first flow shield end and the radially inward surface of the flow shield has a second inner diameter proximate or at the second flow shield end, the second inner diameter being greater than the first inner diameter.

10. The flow control device according to claim 9 , wherein an inner diameter of the radially inward surface increases exponentially from the first inner diameter to the second inner diameter.

11. The flow control device according to claim 1 , wherein the tubular body further comprises a passageway portion defined by the inner surface, and wherein a transition from the passageway to the passageway portion of the tubular body is configured to turn a particle-laden gas one hundred and eighty degrees.

12. The flow control device according to claim 1 , wherein the faired body further include one or more channel guides extending away from the radially outer surface of the faired body and toward the radially inward surface of the flow shield.

13. The flow control device according to claim 1 , wherein the tubular body further comprises a passageway portion defined by the inner surface, and wherein a transition from the passageway to the passageway portion of the tubular body is configured to turn a particle-laden gas about-ninety degrees.

14. A method of fabricating a flow control device comprising:
forming a tubular body comprising a tubular wall with an inner surface, an outer surface, and one or more openings extending from the outer surface to the inner surface through the tubular wall;
forming a faired body comprising a radially inner surface, a radially outer surface, and a channel portion defined by the radially inner surface within the faired body;
forming a flow shield the flow shield comprising a radially inward surface, a radially outward surface, and an interior chamber defined by the radially inward surface within the flow shield;
arranging the faired body at least partially within the flow shield such that the radially inward surface is in a facing spaced relationship with the radially outer surface of the faired body defining a passageway therebetween; and
arranging the tubular body at least partially within the channel portion such that the passageway is fluidly connected to the one or more openings;
wherein:
the device includes a housing and a vacuum source coupled to an outlet of the housing;
the tubular body extends from a first tubular end to a second tubular end that are opposite each other, the second tubular end is connected to the housing;
the faired body is operationally connected to the tubular body proximate or at the first tubular end and located at a first distance away from the first tubular end, and the openings in the tubular body are located between the faired body and the first tubular end; and
the flow shield is operably connected to the tubular body proximate or at the first tubular end and covers the first tubular end, and the openings within the tubular body are located between the flow shield and the faired body and encircles the faired body and the tubular wall.

15. The method of claim 14 , further comprising:
forming a passageway portion within the tubular body to a direct particle-laden gas from the passageway through the one or more openings into the passageway portion and to an inlet of a particle concentration measurement sensor.

16. The method of claim 15 , wherein the particle-laden gas includes particles of fire suppression agent suspended in a gas and the particle concentration measurement sensor measures a concentration of the fire suppression agent in the gas.

Assignees

• Kidde Tech Inc

Inventors

• Baldwin Eli
• Fazzio Mark P
• Varnell James Allen
• Jackson Benjamin
• Hagge Harlan

Classifications

• G01N1/2208

  with impactors · CPC title

• B01D2221/10

  Separation devices for use in medical, pharmaceutical or laboratory applications, e.g. separating amalgam from dental treatment residues · CPC title

• G01N15/075

  by optical means · CPC title

• A62C99/009

  Methods or equipment not provided for in groups A62C99/0009 - A62C99/0081 · CPC title

• A62C37/00

  Control of fire-fighting equipment (heat-sensitive devices G01K) · CPC title