Flow amplifying nozzle

• US 4,195,780 A
• Filed: 12/27/1978
• Issued: 04/01/1980
• Est. Priority Date: 12/01/1977
• Status: Expired due to Term

• Current Assignee: Vortec Corporation
• Original Assignee: Vortec Corporation
• Inventors: Inglis, Leslie R.
• Primary Examiner(s): Reeves, Robert B.
• Assistant Examiner(s): Kashnikow, Andres
• Application Number:
  US05/973,691
• Time in Patent Office: 461 Days
• Field of Search: 417/187, 417/197, 417/198, 261/76, 261/78 R, 261/78 A, 261/DIG. 75, 239/71, 239/73, 239/74, 239/270, 239/417, 239/418, 239/424, 239/425.5, 239/433, 239/434.5, 239/457, 239/537-541, 239/579, 239/581, 239/583, 239/586, 239/590.5 , 239/DIG. 3, 239/DIG. 7
• US Class Current: 239/73
• CPC Class Codes: B05B 1/005 Nozzles or other outlets specially adapted for discharging one or more gases
• CPC Class Codes: Y10S 165/908 Fluid jets

Abstract

An adjustable nozzle for directing and amplifying the flow of compressed air or other pressurized fluid. The nozzle includes a rear body section and a front nozzle section, the two sections being threadedly connected to define a forwardly-facing flow-directing passage and a radially-extending metering passage communicating with the flow-directing passage. The size of the metering passage may be selectively adjusted without altering the cross-sectional dimensions of the flow-directing passage by rotating the nozzle section into any selected position of threaded adjustment upon the body section, such position (and the relative dimension of the metering section) being indicated by micrometer markings upon the exposed surfaces of the respective sections.

Claims

1. A fluid-directing flow-amplifying nozzle comprising a rear body section and a forwardly-extending nozzle section;

said body section including an axial portion, a cylindrical sleeve portion spaced radially from said axial portion, and an annular transverse wall portion extending therebetween;

said axial, sleeve, and wall portions together defining a forwardly-facing annular recess;

said nozzle section being threadedly and adjustably connected to said axial portion and having a rearwardly-projecting cylindrical collar received within said forwardly-facing recess;

said collar being spaced radially from said axial portion to define an annular distribution chamber therebetween and being spaced radially from said sleeve portion to form an annular forwardly-extending flow-directing passage; and

passage means provided by said body section for conducting a primary fluid under pressure into said distribution chamber;

said collar having a rearwardly-facing annular surface movable in relation to said transverse wall portion of said body to define a selectively variable metering passage for altering the flow of primary fluid from said nozzle as the position of said threaded nozzle section is adjusted with respect to said body section.

2. The nozzle of claim 1 in which said transverse wall portion extends along a plane normal to the longitudinal axis of said nozzle.

3. The nozzle of claim 1 in which said rearwardly-facing annular surface of said collar extends along a plane normal to the longitudinal axis of said nozzle.

4. The nozzle of claim 1 in which the ratio of the cross sectional area of said flow-directing passage to the maximum effective area of said metering passage falls within the range of about 1:

1 to 2;

1.

5. The nozzle of claim 1 in which said annular flow-directing passage is of substantially uniform cross sectional area throughout its length.

6. The nozzle of claim 1 in which one of said sections is provided with a series of circumferentially-spaced markings and the other of said sections is provided with an index mark alignable with each of said markings upon movement of said nozzle section into selected positions of adjustment.

7. A fluid-directing flow-amplifying nozzle comprising a rear body section and a forwardly-tapered nozzle section;

said body section including an axial portion, a cylindrical sleeve portion spaced radially from said axial portion, and an annular wall portion extending therebetween and lying along a transverse plane normal to the longitudinal axis of said nozzle;

said axial, sleeve, and wall portions together defining a forwardly-facing annular recess;

said nozzle section being threadedly and adjustably connected to said axial portion and having a rearwardly-projecting cylindrical collar received within said forwardly-facing recess;

said collar being spaced radially from said axial portion to define an annular distribution chamber therebetween and being spaced radially from said sleeve portion to form an annular flow-directing passage of substantially uniform cross sectional dimensions throughout its length; and

passage means provided by said body section for conducting a primary fluid under pressure into said chamber;

said collar having a rearwardly-facing annular surface extending along a plane normal to the axis of said nozzle and movable in relation to said wall portion of said body to define a selectively variable metering passage for metering the flow of primary fluid from said distribution chamber into said flow-directing passage.

8. The nozzle of claim 7 in which the ratio of the cross sectional area of said flow-directing passage to the maximum effective operating area of said metering passage falls within the range of about 1:

1 to 2;

1.

9. The nozzle of claim 7 in which one of said sections is provided with a series of circumferentially-spaced markings and the other of said sections is provided with an index mark alignable with each of said markings upon movement of said nozzle section into selected positions of adjustment.

10. A fluid-directing flow-amplifying nozzle comprising a rear body section and a forwardly-tapered nozzle section, said body section including an axial portion, a cylindrical sleeve portion spaced outwardly from said axial portion, and an annular transverse wall portion extending therebetween;

said axial, sleeve, and wall portions together defining a forwardly-facing annular recess;

said nozzle section being threadedly and adjustably mounted upon said axial portion and having a rearwardly-projecting cylindrical collar received within said forwardly-facing recess;

said collar being spaced outwardly from said axial portion to define an annular distribution chamber therebetween and being spaced inwardly from the inside surface of said sleeve portion to form an annular forwardly-extending flow-directing passage; and

passage means provided by said body section for conducting a primary fluid under pressure into said distribution chamber;

said collar having a rearwardly-facing annular surface movable in relation to said transverse wall portion of said body to define a selectively variable metering passage for altering the flow of primary fluid from said nozzle as the position of said threaded nozzle section upon said axial portion is adjusted.

11. The nozzle of claim 10 in which said transverse wall portion extends along a plane normal to the longitudinal axis of said nozzle.

12. The nozzle of claim 10 in which said rearwardly-facing annular surface of said collar extends along a plane normal to the longitudinal axis of said nozzle.

13. The nozzle of claim 10 in which the ratio of the cross sectional area of said flow-directing passage to the maximum effective area of said metering passage falls within the range of about 1:

1 to 2;

1.

14. The nozzle of claim 13 in which said ratio falls within the range of 1:

1 to 1.2;

1.

15. The nozzle of claim 10 in which said annular flow-directing passage is of substantially uniform cross sectional area throughout its length.

16. The nozzle of claim 10 in which one of said sections is provided with a series of circumferentially-spaced markings and the other of said sections is provided with an index mark alignable with each of said markings upon movement of said nozzle section into selected positions of adjustment.

17. The nozzle of claim 16 in which said series of markings is provided along the outer surface of said collar and said index mark is provided upon the outer surface of said sleeve.

18. The nozzle of claim 10 in which said passage means includes a passage extending axially into said axial portion and at least one opening extending transversely from said passage into said annular distribution chamber.

19. A fluid-directing flow-amplifying nozzle comprising a rear body section and a forwardly-extending nozzle section;

said body section including an axial portion, a cylindrical sleeve portion spaced inwardly from said axial portion, and an annular transverse wall portion extending therebetween;

said axial, sleeve, and wall portions together defining a forwardly-facing annular recess;

said nozzle section being threadedly and adjustably connected to said axial portion and having a rearwardly-projecting cylindrical collar received within said forwardly-facing recess;

said collar being spaced inwardly from said axial portion to define an annular distribution chamber therebetween and being spaced outwardly from the outer surface of said sleeve portion to form an annular forwardly-extending flow-directing passage; and

passage means provided by said body section for conducting a primary fluid under pressure into said distribution chamber;

said collar having a rearwardly-facing annular surface movable in relation to said transverse wall portion of said body to define a selectively variable metering passage for altering the flow of primary fluid from said nozzle as the position of said threaded nozzle section is adjusted with respect to said body section.

20. The nozzle of claim 19 in which said transverse wall portion extends along a plane normal to the longitudinal axis of said nozzle.

21. The nozzle of claim 19 in which said rearwardly-facing annular surface of said collar extends along a plane normal to the longitudinal axis of said nozzle.

22. The nozzle of claim 19 in which the ratio of the cross sectional area of said flow-directing passage to the maximum effective area of said metering passage falls within the range of about 1:

1 to 2;

1.

23. The nozzle of claim 19 in which said annular flow-directing passage is of substantially uniform cross sectional area throughout its length.

24. The nozzle of claim 19 in which one of said sections is provided with a series of circumferentially-spaced markings and the other of said sections is provided with an index mark alignable with each of said markings upon movement of said nozzle section into selected positions of adjustment.