Cyclone and methods of manufacture thereof

Patent metadata

Field	Value
Publication number	US-11577258-B2
Application number	US-202017008859-A
Country	US
Kind code	B2
Filing date	Sep 1, 2020
Priority date	Nov 5, 2019
Publication date	Feb 14, 2023
Grant date	Feb 14, 2023

Abstract

A cyclone includes a hollow cylindrical upper portion and a hollow conical lower portion having an inclined wall and a base wall. The base wall and the inclined wall are continuous contact with each other, and the inclined wall of the hollow conical lower portion is in continuous contact with an outer wall of the hollow cylindrical upper portion. A total cyclone height is from about 10 to about 30 millimeters, and a ratio of the total cyclone height to an inner diameter of the hollow cylindrical upper portion is from about 0.7 to about 1.3. An angle between an inner surface of the base wall and an inner surface of the inclined wall is from about 110 to about 130 degrees.

First claim

What is claimed is:

1. A cyclone comprising:
a hollow cylindrical upper portion comprising an upper wall and an outer circular wall; and
a hollow conical lower portion comprising an inclined wall and a base wall, the base wall and the inclined wall being in continuous contact with each other,
wherein the hollow cylindrical upper portion comprises:
an inlet port; and
an outlet port, wherein
the inlet port is operative to permit a fluid with particles entrained therein into the hollow cylindrical upper portion,
the outlet port is operative to permit the fluid devoid of a portion of the particles to exit the cyclone, wherein

the upper wall comprises a conduit that is operative to permit communication with an analytical device,
the inclined wall of the hollow conical lower portion is in continuous contact with an outer wall of the hollow cylindrical upper portion
a total cyclone height H is from about 10 millimeters to about 30 millimeters,
a ratio of total cyclone height H to an inner diameter D of the hollow cylindrical upper portion is from about 0.7 to about 1.3,
an angle θ between an inner surface of the base wall and an inner surface of the inclined wall is from about 110 degrees to about 130 degrees,
the inlet port is tangentially located in relation to an outer circumference of the hollow cylindrical upper portion and discharges its contents directly into a channel formed between an inner surface of the hollow cylindrical upper portion and an outer surface of the conduit,
a lower portion of the conduit protrudes into the hollow cylindrical upper portion to provides a channel between an outer surface of the conduit and an inner surface of the outer circular wall,
the inlet port and the outlet port are at right angles to each other, and
the inlet port is at a lower elevation than the outlet port.

2. The cyclone of claim 1 , wherein a ratio of a height to diameter of the hollow cylindrical upper portion (h/D) is 0.35 to 0.6.

3. The cyclone of claim 1 , wherein the angle θ is from about 115 degrees to about 125 degrees.

4. The cyclone of claim 1 , wherein a sensor is disposed in the conduit.

5. The cyclone of claim 1 , wherein the conduit comprises a capillary tube that is in communication with an analytical device.

6. The cyclone of claim 1 , wherein an outer diameter of the hollow cylindrical upper portion is from about 6 millimeters to about 14 millimeters.

7. The cyclone of claim 1 , wherein
the base wall has an inner diameter B, and
a ratio of B to D is from about 0.15 to about 0.50.

8. The cyclone of claim 1 , wherein the conduit has a diameter D e that is from about 8 percent to about 15 percent of the inner diameter D of the hollow cylindrical upper portion.

9. The cyclone of claim 1 , wherein the conduit comprises a sensor that facilitates analysis of at least one of the fluid and the particles.

10. A method comprising:
introducing a fluid containing particles entrained therein into a cyclone via an inlet port of the cyclone;
extracting the fluid from an outlet port of the cyclone, where the fluid extracted from the outlet port is devoid of at least a portion of the particles entrained in the fluid introduced into the cyclone; and
analyzing at least one of a biological composition and a chemical composition of at least one of the fluid and the particles,
wherein the cyclone comprises:
a hollow cylindrical upper portion comprising an upper wall and an outer circular wall; and
a hollow conical lower portion comprising an inclined wall and a base wall, the base wall and the inclined wall being in continuous contact with each other,
wherein the hollow cylindrical upper portion comprises:
the inlet port; and
the outlet port, wherein
the inlet port is operative to permit a fluid with particles entrained therein into the hollow cylindrical upper portion,
the outlet port is operative to permit the fluid devoid of a portion of the particles to exit the cyclone, wherein

the upper wall comprises a conduit that is operative to permit communication with an analytical device,
the inclined wall of the hollow conical lower portion is in continuous contact with an outer wall of the hollow cylindrical upper portion
a total cyclone height H is from about 10 millimeters to about 30 millimeters,
a ratio of total cyclone height H to an inner diameter D of the hollow cylindrical upper portion is from about 0.7 to about 1.3,
an angle θ between an inner surface of the base wall and an inner surface of the inclined wall is from about 110 degrees to about 130 degrees,

the inlet port is tangentially located in relation to an outer circumference of the hollow cylindrical upper portion and discharges its contents directly into a channel formed between an inner surface of the hollow cylindrical upper portion and an outer surface of the conduit,
a lower portion of the conduit protrudes into the hollow cylindrical upper portion to provides a channel between an outer surface of the conduit and an inner surface of the outer circular wall,
the inlet port and the outlet port are at right angles to each other, and
the inlet port is at a lower elevation than the outlet port.

11. The method of claim 10 , wherein the analysis is conducted via sensors disposed in the conduit.

12. The method of claim 10 , further comprising discharging a portion of at least one of the fluid and the particles via a capillary tube to the analytical device.

13. The method of claim 10 , further comprising at least one of heating and cooling the cyclone, wherein sample collection/analysis/detection is conducted during the at least one of the heating and the cooling of the cyclone.

14. The method of claim 10 , further comprising introducing chemicals into the cyclone for chemical reactions that facilitate detection.

15. A method comprising:
disposing a hollow cylindrical upper portion comprising an upper wall and an outer circular wall onto a hollow conical lower portion comprising an inclined wall and a base wall to form a cyclone, where the hollow cylindrical upper portion comprises an inlet port and an outlet port, wherein
the inlet port is operative to permit a fluid with particles entrained therein to flow into the hollow cylindrical upper portion,
the outlet port is operative to permit the fluid devoid of a portion of the particles to exit the cyclone,
the upper wall comprises a conduit that is operative to permit communication with an analytical device,
the inclined wall of the hollow conical lower portion is in continuous contact with an outer wall of the hollow cylindrical upper portion,
a total cyclone height H is from about 10 millimeters to about 30 millimeters,
a ratio of the total cyclone height H to an inner diameter D of the hollow cylindrical upper portion is from about 0.7 to about 1.3,
an angle θ between an inner surface of the base wall and an inner surface of the inclined wall is from about 110 to about 130 degrees,
the inlet port is tangentially located in relation to an outer circumference of the hollow cylindrical upper portion and discharges its contents directly into a channel formed between an inner surface of the hollow cylindrical upper portion and an outer surface of the conduit,
a lower portion of the conduit protrudes into the hollow cylindrical upper portion to provides a channel between an outer surface of the conduit and an inner surface of the outer circular wall,
the inlet port and the outlet port are at right angles to each other, and
the inlet port is at a lower elevation than the outlet port.

16. The method of claim 15 , further comprisin

Assignees

• Univ Johns Hopkins

Inventors

• Damit Brian E
• Demirev Plamen A
• Corson Elizabeth C
• Sage Felix C
• Alvarez Benjamin B
• Fancher Charles A
• Van Houten Kelly A
• Rosenker Christopher J

Classifications

• B04C5/081 Primary

  Shapes or dimensions · CPC title

• B04C5/04

  Tangential inlets · CPC title

• G01N1/2211

  with cyclones · CPC title

• G01N1/4077

  by other techniques involving separation of suspended solids · CPC title

• G01N33/0011

  Sample conditioning (preparing specimens for investigation G01N1/28) · CPC title