Venturi bypass system and associated methods

Patent metadata

Field	Value
Publication number	US-9931601-B2
Application number	US-201414337873-A
Country	US
Kind code	B2
Filing date	Jul 22, 2014
Priority date	Jul 22, 2014
Publication date	Apr 3, 2018
Grant date	Apr 3, 2018

Abstract

Exemplary embodiments are directed to venturi bypass systems that generally include a fluid inlet and a fluid outlet. The systems can include a venturi path disposed between the fluid inlet and the fluid outlet. The venturi path can include a venturi defining a venturi inlet and a venturi outlet. The systems can include a bypass loop connected to the venturi path at a joint upstream of the venturi outlet. The systems can include a separation tube connected to the venturi outlet. The separation tube can extend fluid flowing through the venturi path downstream of the joint at which the bypass loop connects to the venturi path. Exemplary embodiments are also directed to methods of regulating fluid flow through a venturi bypass system.

First claim

The invention claimed is:

1. A venturi bypass system, comprising:
a fluid inlet and a fluid outlet,
venturi path disposed between, and in-line with, the fluid inlet and the fluid outlet, the venturi path including a venturi defining a venturi inlet and a venturi outlet,
a bypass loop connected to the venturi path at a first joint upstream of the venturi outlet and a: second joint downstream of the venturi outlet, and
a separation tube connected to the venturi outlet;
a velocity ring disposed between the second joint and the fluid outlet,
wherein the separation tube extends fluid flowing through the venturi path downstream of the second joint at which the bypass loop connects to the venturi path.

2. The system according to claim 1 , wherein the velocity ring defines a velocity ring inlet, a velocity ring outlet, and a restricted midpoint disposed between the velocity ring inlet and the velocity ring outlet.

3. The system according to claim 2 , wherein a restricted midpoint diameter is dimensioned smaller than a velocity ring inlet diameter and a velocity ring outlet diameter.

4. The system according to claim 2 , wherein the velocity ring comprises a first tapered section connecting the velocity ring inlet to the restricted midpoint and a second tapered section connecting the restricted midpoint to the velocity ring outlet.

5. The system according to claim 2 , wherein a distal end of the separation tube concentrically extends into the restricted midpoint of the velocity ring.

6. The system according to claim 2 , wherein the restricted midpoint of the velocity ring defines an area of developed flow and low pressure.

7. The system according to claim 2 , wherein fluid discharged from the separation tube mixes with fluid discharged from the bypass loop at the restricted midpoint of the velocity ring to reduce a pressure drop between the fluid inlet and the fluid outlet.

8. The system according to claim 2 , wherein an area between an outer surface of the separation tube and an inner surface of the restricted midpoint defines a net area of fluid flow.

9. The system according to claim 8 , wherein variation of the net area by variation of at least one of a diameter of the outer surface of the separation tube and a diameter of the inner surface of the restricted midpoint varies an amount of pressure through the venturi bypass system.

10. The system according to claim 8 , wherein variation of the net area by variation of at least one of a diameter of the outer surface of the separation tube and a diameter of the inner surface of the restricted midpoint varies an amount of gas draw through a suction port of the venturi.

11. A venturi bypass system, comprising:
a fluid inlet and a fluid outlet,
a venturi path disposed between the fluid inlet and the fluid outlet, the venturi path including a venturi defining a venturi inlet and a venturi outlet,
a bypass loop connected to the venturi path at a joint upstream of the venturi outlet, and
a separation tube connected to the venturi outlet,
wherein the separation tube extends fluid flowing through the venturi path downstream of the joint at which the bypass loop connects to the venturi path,
wherein the separation tube comprises a broadening region at a distal end of the separation tube, and
wherein the broadening region defines a broadening region inlet and a restricted outlet connected by a tapered section.

12. The system according to claim 11 , wherein an area between an inner surface of the fluid outlet and the restricted outlet of the broadening region of the separation tube defines a net area of fluid flow.

13. The system according to claim 12 , wherein variation of the net area by variation of at least one of a diameter of the restricted outlet and a diameter of the inner surface of the fluid outlet varies an amount of gas draw through a suction port of the venturi.

14. A method of regulating fluid flow of a venturi bypass system, the method comprising:
providing the venturi bypass system, the venturi bypass system including (i) a fluid inlet and a fluid outlet, (ii) a venturi path disposed between, and in-line with, the fluid inlet and the fluid outlet, the venturi path including a venturi defining a venturi inlet and a venturi outlet, (iii) a bypass loop connected to the venturi path at a first joint upstream of the venturi outlet and a second joint downstream of the venturi outlet, and (iv) a separation tube,
connecting the separation tube to the venturi outlet,
extending the separation tube downstream of the second joint at which the bypass loop connects to the venturi path, and
flowing fluid through the separation tube downstream of the second joint at which the bypass loop connects to the venturi path.

15. The method according to claim 14 , comprising preventing mixture of fluid flowing through the venturi path with fluid flowing through the bypass loop until a point downstream of the second joint.

16. The method according to claim 14 , comprising providing a velocity ring disposed between the second joint and the fluid outlet, the velocity ring defining a velocity ring inlet, a velocity ring outlet, and a restricted midpoint disposed between the velocity ring inlet and the velocity ring outlet.

17. The method according to claim 16 , comprising concentrically extending the separation tube into the restricted midpoint of the velocity ring.

18. The method according to claim 16 , comprising reducing a pressure drop between the fluid inlet and the fluid outlet by mixing fluid discharged from the separation tube with fluid discharged from the bypass loop at the restricted midpoint of the velocity ring.

19. The method according to claim 14 , comprising regulating fluid flow through the venturi path by providing a concentrically disposed flow regulator upstream of the venturi inlet.

20. A method of regulating fluid flow of a venturi bypass system, the method comprising:
providing the venturi bypass system, the venturi bypass system including (i) a fluid inlet and a fluid outlet, (ii) a venturi path disposed between the fluid inlet and the fluid outlet, the venturi path including a venturi defining a venturi irdet and a venturi outlet, (iii) a bypass loop connected to the venturi path at a joint upstream of the venturi outlet, and (iv) a separation tube with a broadening region at a distal end of the separation tube, the broadening region defining a broadening, region inlet and a restricted outlet,
connecting the separation tube to the venturi outlet,
extending the separation tube downstream of the joint at which the bypass loop connects to the venturi path, and
flowing fluid through the separation tube downstream of the joint at which the bypass loop connects to the venturi path.

21. The method according to claim 20 , comprising reducing a pressure drop between the fluid inlet and the fluid outlet by passing fluid discharged from the bypass loop around the restricted outlet of the broadening region of the separation tube prior to mixing with the fluid discharged from the separation tube.

Assignees

• Hayward Ind Inc

Inventors

• Engelhard Rolf
• Tessitore Joseph Anthony
• Renigar Seth Darrell

Classifications

• B01F5/0426

  Operations & Transport · mapped topic

• B01F5/0423 Primary

  Operations & Transport · mapped topic

• B01F3/04503

  Operations & Transport · mapped topic

• B01F2003/04886

  Operations & Transport · mapped topic

• B01F5/0498

  Operations & Transport · mapped topic