Spray nozzle device and coating method

• US 9,878,334 B2
• Filed: 12/11/2013
• Issued: 01/30/2018
• Est. Priority Date: 12/27/2012
• Status: Active Grant

• Current Assignee: EV Group E Thallner GmbH (Thallner Privatstiftung)
• Original Assignee: EV Group E Thallner GmbH (Thallner Privatstiftung)
• Inventors: Massa, Felix
• Primary Examiner(s): Leong, Nathan T
• Application Number:
  US14/652,539
• Publication Number:
  US 20150314308A1
• Time in Patent Office: 1,511 Days
• Field of Search: None
• CPC Class Codes: B05B 1/267 the liquid or other fluent material being deflected in determined directions
• CPC Class Codes: B05B 1/30 designed to control volume of flow, e.g. with adjustable passages B05B11/0094 takes precedence
• CPC Class Codes: B05B 12/122 responsive to presence or shape of target B05B12/124 takes precedence
• CPC Class Codes: B05B 12/18 using fluids, e.g. gas streams
• CPC Class Codes: B05B 17/06 using ultrasonic or other kinds of vibrations
• CPC Class Codes: B05B 5/0426 Means for supplying shaping gas
• CPC Class Codes: B05B 7/0815 with at least one gas jet intersecting a jet constituted by a liquid or a mixture containing a liquid for controlling the shape of the latter
• CPC Class Codes: B05D 1/02 performed by spraying
• CPC Class Codes: B05D 3/042 Directing or stopping the fluid to be coated with air

Abstract

A spray nozzle apparatus for spraying a spray jet which contains a coating material in one spray direction S for coating of a surface which is located in the spray direction S opposite the spray nozzle apparatus transversely to the spray direction S with a spray nozzle for spraying the spray jet from a spray nozzle outlet of the spray nozzle and at least one control nozzle with a control nozzle outlet which is aligned or can be aligned to the spray jet transversely to the spray direction S for acting on the spray jet and deflecting it by means of a control flow which is emerging from the control nozzle outlet, characterized in that there is one control apparatus for control of the control flow with a control signal.

Claims

1. A spray nozzle apparatus for coating a surface that is located in a spray direction S opposite the spray nozzle apparatus transversely to the spray direction S, the apparatus comprising:

a spray nozzle that is statically fixed relative to movement of the surface to be coated, the spray nozzle comprising a spray nozzle outlet, the spray nozzle being configured to spray a spray jet containing a coating material in the spray direction S from the spray nozzle outlet, the spray nozzle being unable to rotate at least in one direction transversely to relative movement between the surface to be coated and the spray nozzle,

at least two control nozzles, each of the control nozzles comprising a control nozzle outlet aligned to the spray jet transversely to the spray direction S, each of the control nozzles being configured to produce a control flow from the control nozzle outlet to act on and deflect the spray jet, and

a control apparatus from which separately controlled control signals are provided to control the control flows,

wherein a frequency of the control signals is between >

0 and 500 Hz.

2. The spray nozzle apparatus as claimed in claim 1, wherein the control apparatus is software-supported to control the control flows from the control nozzle outlets, the control flows being gaseous control flows.

3. The spray nozzle apparatus as claimed in claim 1, wherein each of the control signals has a phase shift with destructive interference.

4. The spray nozzle apparatus as claimed in claim 1, wherein the control nozzles have mechanical and/or fluid dynamic components that are switchable by the control signals to influence flow properties of the control flows.

5. The spray nozzle apparatus as claimed in claim 1, wherein the spray nozzle further comprises an ultrasonic atomizer and/or a Venturi nozzle.

6. The spray nozzle apparatus as claimed in claim 1, wherein the control flows are aligned at an angle W from 30°

to 150°

to the spray direction S to the spray jet.

7. The spray nozzle apparatus as claimed in claim 1, wherein the control apparatus is further configured to tilt and/or rotate the control nozzles relative to the spray nozzle to adjust alignment of the respective control flows to the spray jet.

8. A system for coating of a surface of a substrate with a single spray nozzle apparatus, the surface being located in a spray direction S opposite the spray nozzle apparatus transversely to the spray direction S, the system having:

a spray nozzle apparatus configured to coat the surface of the substrate, the surface being located in a spray direction S opposite the spray nozzle apparatus transversely to the spray direction S, the apparatus comprising;

a spray nozzle that is statically fixed relative to movement of the surface to be coated, the spray nozzle comprising a spray nozzle outlet, the spray nozzle being configured to spray a spray jet containing a coating material in the spray direction S from the spray nozzle outlet, the spray nozzle being unable to rotate at least in one direction transversely to relative movement between the surface to be coated and the spray nozzle,

at least two control nozzles, each of the control nozzles comprising a control nozzle outlet aligned to the spray jet transversely to the spray direction S, each of the control nozzles being configured to produce a control flow from the control nozzle outlet to act on and deflect the spray jet,

means for executing relative motion between the substrate and the spray nozzle apparatus transversely to the spray direction S, and

a control apparatus from which separately controlled control signals are provided to control the control flows,

wherein a frequency of the control signals is between >

0 and 500 Hz.

9. The system as claimed in claim 8, wherein the relative motion takes place by translational movement of the substrate.

10. The system as claimed in claim 8, wherein the control apparatus is configured to tilt and/or rotate the control nozzles relative to the spray nozzle to adjust alignment of the respective control flows to the spray jet.

11. A system for coating a surface, comprising:

a spray nozzle that is statically fixed relative to movement of the surface to be coated, the spray nozzle having a spray nozzle outlet for creating a spray jet of a coating material, said spray jet directed in a spray direction S toward the surface, said surface being oriented transversely to said spray direction S, the spray nozzle being unable to rotate at least in one direction transversely to relative movement between the surface to be coated and the spray nozzle;

at least two control nozzles each having a control nozzle outlet, said control nozzles disposed relative to said spray nozzle such that said control nozzle outlets are alignable transversely to said spray direction S;

means for creating a control flow from each of said control nozzle outlets to act on and deflect the spray jet; and

a control apparatus generating a control signal for each of said control nozzle outlets for controlling the control flow from each of said control nozzle outlets,

wherein each control signal has a frequency between >

0 and 500 Hz.

12. The system as claimed in claim 11, wherein the control apparatus is configured to tilt and/or rotate the control nozzles relative to the spray nozzle to adjust alignment of the control flow from each of said control nozzle outlets to the spray jet.