VENTURI DEVICES WITH DUAL VENTURI FLOW PATHS

• US 20150354600A1
• Filed: 06/09/2015
• Published: 12/10/2015
• Est. Priority Date: 06/09/2014
• Status: Active Grant

• Current Assignee: Dayco IP Holdings, LLC (Dayco Products LLC)
• Original Assignee: Dayco IP Holdings, LLC (Dayco Products LLC)
• Inventors: Fletcher, David E., Graichen, Brian M., Miller, James H., Hampton, Keith
• Granted Patent: US 9,879,699 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: F04F 5/14 the inducing fluid being elastic fluid
• CPC Class Codes: F04F 5/20 for evacuating
• CPC Class Codes: F04F 5/54 Installations characterised by use of jet pumps, e.g. combinations of two or more jet pumps of different type

Abstract

Venturi devices and systems incorporating the Venturi devices are disclosed. The Venturi devices have a body defining a passageway that has a motive section and a discharge section spaced a distance apart from one another to define a Venturi gap. Both the motive section and the discharge section converge toward the Venturi gap. Also, the body defines a first suction port and a second suction port generally opposite one another that are each in fluid communication with the Venturi gap. The Venturi gap is generally wider proximate both the first suction port and the second suction port than at a generally central point therebetween. In a system, the Venturi device has its motive section fluidly connected to a source of motive pressure and one or both of the first and second suction ports in fluid communication with a device requiring vacuum.

Claims

1. A Venturi device comprising:

a body defining a passageway having a motive section and a discharge section spaced a distance apart from one another to define a Venturi gap and both converging toward the Venturi gap, and defining a first suction port and a second suction port generally opposite one another, and each in fluid communication with the Venturi gap;

wherein the Venturi gap is generally wider proximate both the first suction port and the second suction port than at a generally central point therebetween.

2. The Venturi device of claim 1, wherein the body further defines a chamber having an outlet end of the motive section extending into the chamber at a position where the chamber provides fluid flow around the entire outer surface of the outlet end and an inlet end of the discharge section extending into the chamber at a position where the chamber provides fluid flow around the entire outer surface of the inlet end of the discharge section.

3. The Venturi device of claim 2, wherein the chamber includes a plurality of fingers extending radially inward and axially away from the passageway of the body;

wherein the plurality of fingers define a seat for a sealing member as part of a check valve.

4. The Venturi device of claim 3, wherein each of the plurality of fingers has a base that is wider than at an apex.

5. The Venturi device of claim 4, wherein each of the plurality of fingers includes a mirror image finger beginning at the base and projecting axially away from the base.

6. The Venturi device of claim 1, wherein the body further defines a bypass port downstream of the first and second suction ports.

7. The Venturi device of claim 6, wherein at least one of the first suction port, the second suction port, or the bypass port defines an outlet of a check valve.

8. The Venturi device of claim 1, wherein the first suction port defines an outlet of a check valve, and the second suction port is in fluid communication with the same check valve through one or more bifurcation passages extending from the check valve to the second suction port.

9. The Venturi device of claim 8, wherein the one or more bifurcation passages are generally parallel to the Venturi gap.

10. The Venturi device of claim 1, wherein the fluid flow proximate the first suction port is bifurcated for a portion of the fluid flow to flow through secondary passages to the second suction port.

11. The Venturi device of claim 10, wherein the body further defines a chamber spacing the first suction port and the second suction port apart from one another by a distance;

wherein an outlet end of the motive section extends into the chamber at a position where the chamber provides fluid flow around the entire outer surface of the outlet end and an inlet end of the discharge section extends into the chamber at a position where the chamber provides fluid flow around the entire outer surface of the inlet end of the discharge section.

20. The Venturi device of claim 2, wherein the chamber includes a plurality of fingers extending radially inward and axially away from the passageway of the body;

wherein the plurality of fingers define a seat for a sealing member as part of a check valve.

12. A system comprising:

a Venturi device comprising a body defining a passageway having a motive section and a discharge section spaced a distance apart from one another to define a Venturi gap and both converging toward the Venturi gap, and defining a first suction port and a second suction port generally opposite one another, and each in fluid communication with the Venturi gap;

wherein the Venturi gap is generally wider proximate both the first suction port and the second suction port than at a generally central point therebetween;

a source of motive flow fluidly connected to the motive section of the Venturi device; and

a first device requiring vacuum connected to the first suction port and/or the second suction port of the Venturi device.

13. The system of claim 13, further comprising a second device requiring vacuum, wherein the first device requiring vacuum is in fluid communication with the first suction port and the second device requiring vacuum is in fluid communication with the second suction port.

14. The system of claim 13, further comprising a first suction housing connected to the body with a fluid-tight seal to define a first suction passageway for the first suction port;

wherein the first suction passageway is fluidly connected to the first device requiring vacuum.

17. The system of claim 13, wherein at least one of the first suction port, the second suction port, or a bypass port downstream of the first and second suction ports defines an outlet of a check valve.

18. The system of claim 13, wherein the fluid flow proximate the first suction port is bifurcated for a portion of the fluid flow to flow through secondary passages to the second suction port.

19. The system of claim 13, wherein the body further defines a chamber having an outlet end of the motive section extending into the chamber at a position where the chamber provides fluid flow around the entire outer surface of the outlet end and an inlet end of the discharge section extending into the chamber at a position where the chamber provides fluid flow around the entire outer surface of the inlet end of the discharge section.

15. The system of claim 15, further comprising a second suction housing connected to the body with a fluid-tight seal to define a second suction passageway for the second suction port;

wherein the second suction passageway is fluidly connected to the first device requiring vacuum or a second device requiring vacuum.

16. The system of claim 15, further comprising a cap covering the second suction port.