APPARATUS AND PROCESS FOR SPRAYING LIQUIDS

• US 3,771,724 A
• Filed: 07/19/1972
• Issued: 11/13/1973
• Est. Priority Date: 07/19/1972
• Status: Expired due to Term

• Current Assignee: Aqua-Aerobic Systems Incorporated (Metawater Company Limited)
• Original Assignee: Clark B. Rose, Richard B. Kelley, Richard B. Ravitts
• Inventors: Ravitts, Richard B., Rose, Clark B., Kelley, Richard B.
• Primary Examiner(s): Knowles, Allen N.
• Assistant Examiner(s): Church, Gene A.
• Application Number:
  US05/273,181
• Time in Patent Office: 482 Days
• Field of Search: 239/17,22,221,440,456,215 261/120 210/242
• US Class Current: 239/221
• CPC Class Codes: B01D 47/06 Spray cleaning
• CPC Class Codes: B01D 47/085 with nozzles which are partly immersed in the washing fluid
• CPC Class Codes: B01D 47/16 Apparatus having rotary means, other than rotatable nozzles, for atomising the cleaning liquid
• CPC Class Codes: B01F 23/23421 the stirrers rotating about a vertical axis
• CPC Class Codes: B01F 23/23761 Aerating, i.e. introducing oxygen containing gas in liquids
• CPC Class Codes: B01F 27/113 Propeller-shaped stirrers for producing an axial flow, e.g. shaped like a ship or aircraft propeller
• CPC Class Codes: B01F 27/15 Stirrers with tubes for guiding the material
• CPC Class Codes: B01F 27/25 Mixers with both stirrer and drive unit submerged in the material being mixed
• CPC Class Codes: B01F 27/80 with stirrers rotating about a substantially vertical axis
• CPC Class Codes: B01F 33/503 Floating mixing devices
• CPC Class Codes: B01F 35/3214 at the upper side of the axis, e.g. driving the stirrer from the top of a receptacle
• CPC Class Codes: B05B 1/06 in annular, tubular or hollow conical form
• CPC Class Codes: B05B 17/085 designed to produce sheets or curtains of liquid, e.g. water walls
• CPC Class Codes: C02F 3/16 the aerator having a vertical axis
• CPC Class Codes: C02F 3/24 using free-fall aeration or spraying
• CPC Class Codes: F15D 1/08 of jets leaving an orifice
• CPC Class Codes: F28C 3/06 the heat-exchange media being a liquid and a gas or vapour temperators for cooling steam F22
• CPC Class Codes: F28F 25/06 Spray nozzles or spray pipes
• CPC Class Codes: Y02W 10/10 Biological treatment of water, waste water, or sewage

Abstract

A pressure nozzle for spraying liquid as droplets substantially free from droplets of sizes that will form a mist which will drift. A first liquid sheet is conducted along a wall that extends beyond the nozzle orifice. A second liquid sheet intersects the first sheet on the wall, and the resultant stream, which is discharged into the atmosphere, disrupts into droplets in a controlled manner.

Claims

1. A nozzle for spraying liquid under pressure into the atmosphere, and which is adapted to effect improved cooling, aeration, condensing, humidification, or stripping of dissolved or entrained gases, comprising in combination:

a wall member at the nozzle orifice for directing liquid under pressure into the atmosphere, said wall member extending between an inlet end and a discharge end, means for supplying liquid under pressure along said wall member to form a first liquid sheet directed in a path substantially parallel to said wall member, and means for conducting at least one other second sheet of liquid under pressure against said wall member at an angle that intersects said first sheet on the wall member between said inlet end and said discharge end.

2. The nozzle of claim 1 in which the means for conducting said second sheet of liquid under pressure is at an acute angle offset from parallel with respect to said first sheet within the range of from about 10* to about 80* .

3. The nozzle of claim 1 further characterized by said last named means having an outlet member for directing said second sheet of liquid against said first named wall member, said outlet member spaced from said wall member, and means for adjusting the relative distance between said outlet member and said wall member.

4. A nozzle having an orifice for spraying liquid, and which is adapted to optimize the size and number of droplets produced thereby, comprising:

a first wall member at the nozzle orifice having an inlet end and a discharge end for generating and conducting a first sheet of liquid under pressure in a path from said inlet end toward said discharge end, and a second wall member having an inlet end and a discharge end for generating a second sheet of liquid, said second wall member spaced from snd biangular with respect to said first wall member for conducting a second sheet of liquid under pressure against said first sheet of liquid at an angle that intersects said first sheet of liquid between said inlet end and said discharge end of said second wall member.

5. The nozzle according to claim 4 further characterized in that said second wall is of an extent sufficient for said second sheet to substantially traverse the entire path of said first sheet.

6. The nozzle of claim 5 further characterized by means for adjusting the space between said first and second wall members.

7. The nozzle of claim 5 wherein said first and second walls are offset from parallel within the range from about 10* to about 80* .

8. A nozzle having an orifice for spraying liquid, and which is adapted to improve the size and number of droplets produced thereby, comprising:

a wall member at the nozzle orifice for directing a stream of liquid under pressure into the atmosphere, said wall member extending between an inlet end and a discharge end, means for supplying liquid under pressure along said wall member to form a first sheet directed in a path substan-tially parallel to said wall member, and means for conducting at least one other second sheet of liquid under pressure against said wall member at an angle that intersects said sheet on the wall member at a location between said inlet end and said discharge end for increasing the formation of droplets as the resultant stream of liquid is projected into the atmosphere.

9. The nozzle according to claim 8 in which said wall member extends from said inlet end located upstream of said nozzle orifice to said discharge end located downstream from said nozzle orifice.

10. The nozzle according to claim 8 in which said outlet means conducts the second sheet at an angle offset from parallel about 10* to about 80* with respect to said first sheet on said wall member.

11. The nozzle according to claim 8 which further includes means for adjusting the cross-sectional dimension of the orifice.

12. A nozzle having an orifice for spraying liquid, and which is adapted to optimize the size and number of droplets produced thereby, comprising:

a wall member at the nozzle orifice for directing a stream of liquid under pressure into the atmosphere, said wall member in the form of an inverted frusto-conical surface extending between a fluid inlet end and a fluid discharge end, means for supplying liquid under pressure along said surface of the wall member to form a first sheet directed in the path substantially parallel to said wall member, and means having outlet means for conducting at least one second sheet of liquid under pressure against said wall member at an angle that intersects said first sheet on a said first wall member between said fluid inlet end and said discharge end.

13. The nozzle according to claim 12 which further includes means for adjusting the distance between said outlet means and said wall member.

14. The nozzle according to claim 12 in which said outlet means conducts said second sheet at an angle offset from parallel in the rnage from about 10* to about 80* with respect to said first sheet.

15. A nozzle for spraying liquid under pressure into the atmosphere comprising:

a circular nozzle orifice, a wall member at said nozzle orifice for directing a stream of liquid under pressure into the atmosphere, said wall member having the configuration of an inverted frusto-conical surface, said wall member having a circular inlet end and a circular discharge end of greater diameter than said inlet end, means for supplying liquid under pressure along said wall member to form a first liquid sheet directed in a path substantially parallel to said wall member, and outlet means for conducting a second liquid sheet under pressure against said wall member at an angle that intersects said first sheet on said wall member between said inlet and discharge ends thereof.

16. The nozzle according to claim 14 which further includes means for adjusting the distance between said outlet means and said wall member.

17. An apparatus for spraying water from a water supply comprising:

means for supplying water under pressure from the water supply, nozzle means having an orifice for discharging water into the atmosphere as a spray, distributing chamber means for directing the water under pressure to nozzle means, orifice means on said nozzle means for directing the water into the atmosphere, and biangular wall members at said orifice means for disintegrating the water into droplets as it is projected into the atmosphere, said biangular wall members including a first wall for producing a first sheet of water and a second wall member for producing a second sheet of water that intersects said first sheet before said first sheet leaves said first wall member.

18. The apparatus of claim 17 in which said biangular wall members are at an angle with respect to each other in the range from about 10* to about 80* .

19. The apparatus of claim 17 further characterized by means for adjusting the distance between said wall members in order to vary the size of the orifice.

20. A method for spraying liquid, and which is adapted to control the size and number of droplets, comprising:

forming a sheet of liquid under pressure on a wall member upstream to a nozzle orifice, conducting said sheet of liquid along said wall member beyond the orifice into the atmosphere, forming at least one other second sheet of liquid under pressure upstream to the nozzle orifice, said first and second sheets of liquid thin relative to their breadth, and directing said second sheet at an angle that intersects said first liquid sheet before said first sheet leaves the wall member.

21. The method of claim 20 in which said second sheet intersects said first sheet at an acute angle offset from parallel in the range from 10* to 80* .

22. The method of claim 20 which further comprises the step of adjusting the distance between said outlet end and said wall member in order to vary the size of the orifice.

23. An apparatus for spraying liquid comprising:

conduit means having at least one intake opening in communication for conducting liquid under pressure;

plenum chamber means communicating with said conduit means for conducting the propelled liquid outwardly from said conduit means;

nozzle chamber means communicating with said plenum chamber means for projecting the liquid into the atmos-phere, orifice means in said nozzle chamber means through which the liquid is projected into the atmosphere, said orifice means having an opening for increasing the velocity pressure head relative to the static pressure head relative to said conduit means; and

stationary wall members on opposite sides of said orifice for generating and impinging at least one liquid sheet against another liquid sheet before one liquid sheet leaves one stationary wall member in order to disrupt the liquid into droplets as it is projected into the atmosphere.