Dual venturi device

Patent metadata

Field	Value
Publication number	US-2016010661-A1
Application number	US-201514796447-A
Country	US
Kind code	A1
Filing date	Jul 10, 2015
Priority date	Jul 10, 2014
Publication date	Jan 14, 2016
Grant date	—

Abstract

Venturi devices and systems incorporating the same are disclosed. The Venturi devices include a lower body defining a passageway having a motive section and a discharge section spaced a distance apart from one another to define a first Venturi gap and a second Venturi gap downstream of the first Venturi gap at a position that divides the discharge section into a first portion between the first and second Venturi gaps and a second portion leading away from the second Venturi gap, and include an upper body defining a suction passageway in fluid communication with both the first and second Venturi gaps. The motive section and the discharge section converge toward the first Venturi gap.

First claim

What is claimed is:

1 . A Venturi device comprising:
a lower body defining a passageway having a motive section and a discharge section spaced a distance apart from one another to define a first Venturi gap, the motive section and the discharge section converge toward the first Venturi gap, and having a second Venturi gap downstream of the first Venturi gap at a position that divides the discharge section into a first portion between the first and second Venturi gaps and a second portion leading away from the second Venturi gap; and an upper body defining a suction passageway in fluid communication with both the first and second Venturi gaps.

2 . The Venturi device of claim 1 , wherein the first Venturi gap and the second Venturi gap have a center to center distance of about 12 mm to about 50 mm.

3 . The Venturi device of claim 1 , wherein the first Venturi gap is generally wider at a top point, when viewed in a longitudinal cross-section, than at a generally central point.

4 . The Venturi device of claim 1 , wherein the first Venturi gap is generally wider at a top point and a bottom point, when viewed in a longitudinal cross-section, than at a generally central point between the top point and the bottom point.

5 . The Venturi device of claim 4 , wherein the lower body defines a first connector surrounding the bottom point of the Venturi gap and further comprises a first cap sealingly connected to the first connector.

6 . The Venturi device of claim 1 , wherein the lower body and upper body, together, define a first check valve chamber in fluid communication with the first Venturi gap, the first check valve chamber comprising a plurality of fingers extending upward away from the first Venturi gap in a spaced-apart annular arrangement, thereby defining a seat for a sealing member.

7 . The Venturi device of claim 6 , wherein the upper body defines one or more openings into the first check valve chamber and the first Venturi gap is offset, downstream from the one or more openings.

8 . The Venturi device of claim 7 , wherein the plurality of fingers decrease in height the more proximate to the first Venturi gap.

9 . The Venturi device of claim 1 , wherein the lower body and upper body, together, define a second check valve chamber in fluid communication with the second Venturi gap, the second check valve chamber comprising a plurality of fingers extending upward away from the second Venturi gap in a spaced-apart annular arrangement, thereby defining a seat for a sealing member.

10 . The Venturi device of claim 9 , wherein the upper body defines one or more openings into the second check valve chamber and the second Venturi gap is offset, upstream from the one or more openings.

11 . The Venturi device of claim 10 , wherein the plurality of fingers decrease in height the more proximate to the second Venturi gap.

12 . A system comprising:
a Venturi device comprising:
a lower body defining a passageway having a motive section and a discharge section spaced a distance apart from one another to define a first Venturi gap, the motive section and the discharge section converge toward the first Venturi gap, and having a second Venturi gap downstream of the first Venturi gap at a position that divides the discharge section into a first portion between the first and second Venturi gaps and a second portion leading away from the second Venturi gap; and
an upper body defining a suction passageway in fluid communication with both the first and second Venturi gaps.
a source of motive flow fluidly connected to the motive section of the Venturi device; and a first device requiring vacuum connected to the suction port of the Venturi device.

13 . The system of claim 12 , wherein the first Venturi gap and the second Venturi gap have a center to center distance of about 12 mm to about 50 mm.

14 . The system of claim 12 , wherein the lower body and upper body, together, define a first check valve chamber in fluid communication with the first Venturi gap, the first check valve chamber comprising a plurality of fingers extending upward away from the first Venturi gap in a spaced-apart annular arrangement, thereby defining a seat for a sealing member.

15 . The system of claim 14 , wherein the upper body defines one or more openings into the first check valve chamber and the first Venturi gap is offset, downstream from the one or more openings.

16 . The system of claim 15 , wherein the plurality of fingers decrease in height the more proximate to the first Venturi gap.

17 . The system of claim 12 , wherein the lower body and upper body, together, define a second check valve chamber in fluid communication with the second Venturi gap, the second check valve chamber comprising a plurality of fingers extending upward away from the second Venturi gap in a spaced-apart annular arrangement, thereby defining a seat for a sealing member.

18 . The system of claim 17 , wherein the upper body defines one or more openings into the second check valve chamber and the second Venturi gap is offset, upstream from the one or more openings.

19 . The system of claim 18 , wherein the plurality of fingers decrease in height the more proximate to the first Venturi gap.

Assignees

• Fletcher David E
• Graichen Brian M
• Hampton Keith
• Dayco Ip Holdings Llc

Inventors

• Fletcher David E
• Graichen Brian M
• Hampton Keith

Classifications

• F04F5/467

  with a plurality of nozzles arranged in series · CPC title

• F04F5/44 Primary

  Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42 · CPC title

• F04F5/14 Primary

  the inducing fluid being elastic fluid · CPC title

• F04F5/46

  Arrangements of nozzles · CPC title

• F04F5/20 Primary

  for evacuating · CPC title