Dispensing nozzle having a tubular exit zone comprising vanes

Patent metadata

Field	Value
Publication number	US-12544775-B2
Application number	US-202117518034-A
Country	US
Kind code	B2
Filing date	Nov 3, 2021
Priority date	Dec 2, 2020
Publication date	Feb 10, 2026
Grant date	Feb 10, 2026

Abstract

A nozzle and a process suitable for dispensing liquid foamable products, particularly useful with carbon dioxide blowing agents, the nozzle comprising a tubular exit zone having an inlet and an outlet; the tubular exit zone having an inner wall surface defining a passageway for dispensing having a centerline axis; the tubular exit zone further having a plurality of vanes attached to the inner wall surface parallel to the centerline axis with the vanes extending radially into the passageway for dispensing; the vanes having a length dimension, a thickness dimension, and a width dimension; and wherein the vanes do not connect or touch at the centerline of the passageway for dispensing.

First claim

What is claimed is:

1 . A nozzle suitable for dispensing liquid foamable products, the nozzle comprising a tubular exit zone having an inlet and an outlet, and a length;
wherein the tubular exit zone of the nozzle consists of a tubular passageway having an inlet end and an outlet end, with a plurality of vanes in the outlet end; the tubular exit zone having an inner wall surface defining a hollow passageway for dispensing through the tubular exit zone, the passageway for dispensing having a centerline axis; the tubular exit zone further having the plurality of vanes attached to the inner wall surface parallel to the centerline axis with the vanes extending radially into the passageway for dispensing; the vanes having a length having a length dimension, a thickness having a thickness dimension, and a width having a width dimension, the thickness dimension being smaller than the width dimension, and the width dimension being smaller than the length dimension; the length dimension being a distance the vane contacts the inner wall surface parallel to the centerline axis, the thickness dimension being an effective thickness of the vane at the inner wall surface perpendicular to the centerline axis, and the width dimension being a distance from the inner wall surface that the vane extends into the passageway for dispensing; and wherein the vanes do not connect or touch at the centerline axis of the passageway for dispensing, wherein the vanes extend in from the outlet into the tubular exit zone a distance parallel to the centerline that is no more than one third the length of the tubular exit zone, wherein the width dimension of each vane has a maximum value at the outlet for the tubular exit zone and linearly decreases along the entire length of the vane, and the outlet for the tubular exit zone is an exit face of the nozzle.

2 . The nozzle of claim 1 having 3 or more vanes.

3 . The nozzle of claim 2 having 5 to 10 vanes.

4 . The nozzle of claim 1 wherein the vanes are symmetrically distributed radially about the centerline axis of the passageway for dispensing.

5 . The nozzle of claim 1 wherein the vanes are unsymmetrically distributed radially about centerline axis of the passageway for dispensing.

6 . The nozzle of claim 1 wherein the thickness dimension of each vane has a maximum value at the inner wall surface and decreases radially into the passageway for dispensing.

7 . The nozzle of claim 1 wherein the thickness dimension of each vane does not vary from the inner wall surface into the passageway for dispensing.

8 . The nozzle of claim 1 wherein the thickness dimension of each vane increases along the length of the vane from a minimum value at the outlet for the tubular exit zone.

9 . The nozzle of claim 1 further comprising a mixing chamber attached to the inlet of the tubular exit zone.

10 . A process for dispensing foamable products with a nozzle comprising a tubular exit zone having an inlet and an outlet, and a length, wherein the tubular exit zone of the nozzle consists of a tubular passageway having an inlet end and an outlet end, with a plurality of vanes in the outlet end;
comprising the steps of:
a) supplying a liquid foamable product comprising at least one blowing agent to the inlet of the tubular exit zone,
the tubular exit zone having an inner wall surface defining a hollow passageway for dispensing through the tubular exit zone, the passageway for dispensing having a centerline axis;
the tubular exit zone further having the plurality of vanes attached to the inner wall surface parallel to the centerline axis with the vanes extending radially into the passageway for dispensing;
the vanes having a length having a length dimension, a thickness having a thickness dimension, and a width having a width dimension,
the thickness dimension being smaller than the width dimension, and the width dimension being smaller than the length dimension;
the length dimension being a distance the vane contacts the inner wall surface parallel to the centerline axis, the thickness dimension being an effective thickness of the vane at the inner wall surface perpendicular to the centerline axis, and
the width dimension being a distance from the inner wall surface that the vane extends into the passageway for dispensing; and
wherein the vanes do not connect or touch at the centerline axis of the passageway for dispensing, and wherein the vanes extend in from the outlet into the tubular exit zone a distance parallel to the centerline that is no more than one third the length of the tubular exit zone,
wherein the width dimension of each vane has a maximum value at the outlet for the tubular exit zone and linearly decreases along the entire length of the vane, and the outlet for the tubular exit zone is an exit face of the nozzle; and
b) dispensing the liquid foamable product from the outlet of the tubular exit zone.

11 . The process of claim 10 wherein the nozzle has 3 or more vanes.

12 . The process of claim 11 wherein the nozzle has 5 to 10 vanes.

13 . The process of claim 10 wherein the nozzle has vanes symmetrically distributed radially about the centerline axis of the passageway for dispensing.

14 . The process of claim 10 wherein the nozzle has vanes unsymmetrically distributed radially about the centerline axis of the passageway for dispensing.

15 . The process of claim 10 wherein the thickness dimension of each vane in the nozzle has a maximum value at the inner wall surface and decreases radially into the passageway for dispensing.

16 . The process of claim 10 wherein the thickness dimension of each vane in the nozzle does not vary from the inner wall surface into the passageway for dispensing.

17 . The process of claim 10 wherein the thickness dimension of each vane increases along the length of the vane from a minimum value at the outlet for the tubular exit zone.

18 . The process of claim 10 wherein the nozzle further comprises a mixing chamber attached to the inlet of the tubular exit zone.

19 . The process of claim 10 wherein the blowing agent is carbon dioxide.

Assignees

• Ddp Specialty Electronic Materials Us Llc

Inventors

• Schroer Daniel
• Langmaid Joseph
• Rickard Mark
• Soni Piyush

Classifications

• B05B7/0408 Primary

  with arrangements for mixing two or more liquids · CPC title

• B05B1/3402

  to avoid or reduce turbulence, e.g. with fluid flow straightening means · CPC title

• B29B7/7419

  with static or injector mixer elements · CPC title

• B05D1/02

  performed by spraying · CPC title

• B05B7/0043 Primary

  including a plurality of individual elements, e.g. needles, baffles, rotatable blades · CPC title