Turbine, fluid-spraying device, associated facility and manufacturing method

Patent metadata

Field	Value
Publication number	US-12370562-B2
Application number	US-201917259539-A
Country	US
Kind code	B2
Filing date	Jul 12, 2019
Priority date	Jul 13, 2018
Publication date	Jul 29, 2025
Grant date	Jul 29, 2025

Abstract

A turbine for a fluid-spraying device including a turbine body, and a rotor rotating a bowl relative to the body about an axis, the rotor being surrounded by the turbine body in a plane perpendicular to the common axis, the turbine body guiding the rotation of the rotor, the rotor being rotated by a stream of gas, the turbine body receiving the stream of gas at the outlet of the rotor, and delimiting at least one outlet duct configured to guide a first portion of the received stream into a space delimited in a plane perpendicular to the common axis by the bowl and a skirt.

First claim

The invention claimed is:

1. A turbine for a fluid-spraying device, the fluid-spraying device comprising a bowl, an injector configured to inject fluid in the bottom of the bowl, and a skirt at least partially surrounding the bowl in a plane perpendicular to a common axis of rotation and ejecting jets of gas in order to mold a sprayed fluid, the turbine comprising:
a turbine body comprising a first end face delimiting the turbine body along the common axis of rotation, wherein the turbine body is adapted such that the skirt bears against the first end face;
a threaded tube positioned directly on said turbine body and rotatable about the common axis with respect to said turbine body, the threaded tube comprising a section; and
a rotor rotated by a jet of gas, and rotating the bowl relative to said turbine body about the common axis of rotation, wherein said rotor is surrounded by said turbine body in a plane perpendicular to the common axis of rotation, wherein said turbine body guides rotation of said rotor and receives the jet of gas at an outlet of said rotor, and delimits at least one outlet duct that guides a first portion of the received jet of gas into a space delimited in a plane perpendicular to the common axis of rotation by the bowl and the skirt, wherein each outlet duct extends between two ends and opens onto said first end face, and wherein the turbine body and said section of said threaded tube completely surround the at least one outlet duct.

2. The turbine according to claim 1 , wherein said turbine body comprises said first end face and a second end face, the two end faces delimiting said turbine body along the common axis of rotation, and wherein the ratio between the gas jet flow rate passing through said second end face and the gas jet flow rate of the first portion of the jet of gas is less than 1/100.

3. The turbine according to claim 1 , wherein the turbine at least partially delimits an auxiliary passage that conducts a second portion of the jet of gas from said rotor to the bottom of the bowl.

4. The turbine according to claim 3 , wherein said turbine body is arranged so that during operation of the turbine, the ratio of the flow rate of the first portion of the jet of gas to the flow rate of the second portion of the jet of gas is greater than or equal to 2.

5. A fluid-spraying device, comprising:
the bowl of claim 1 ;
the turbine of claim 1 ;
the injector of claim 1 ; and
the skirt of claim 1 .

6. The fluid-spraying device according to claim 5 , wherein an upstream direction and a downstream direction are defined for the common axis of rotation, said skirt being offset toward the downstream direction relative to the turbine body, wherein the rotor has a first upstream face delimiting the rotor along the common axis of rotation, wherein the turbine body delimits a receiving chamber of the rotor, the receiving chamber comprising a second upstream face delimiting the receiving chamber along the common axis of rotation, the second upstream face facing the first upstream face and being offset along the upstream direction relative to the first upstream face, and wherein an annular groove is centered on the common axis of rotation and is in the second upstream face, the annular groove receiving the jet of gas and transmitting the first portion of the jet of gas to each outlet duct of the turbine body.

7. The fluid-spraying device according to claim 6 , wherein the second upstream face comprises, for each outlet duct of the at least one outlet duct, a radial groove extending radially outward from the annular groove and guiding the first portion of the jet of gas from the annular groove to the outlet duct.

8. The fluid-spraying device according to claim 7 , wherein the at least one outlet duct comprises two outlet ducts, wherein each radial groove extends from the annular groove along a respective line, and wherein the two respective lines are combined.

9. The fluid-spraying device according to claim 5 , at least partially delimiting an auxiliary passage that conducts a second portion of the jet of gas from the rotor to the bottom of said bowl, wherein at least one section of the auxiliary passage is in the turbine body.

10. The fluid-spraying device according to claim 9 , wherein said injector is surrounded by the rotor in a plane perpendicular to the common axis of rotation, wherein a free volume separates the rotor and said injector in a plane perpendicular to the common axis of rotation, wherein the auxiliary passage comprises a duct configured to guide the second portion of the jet of gas to the free volume, and wherein the free volume guides the second portion of the stream jet of gas to the bottom of said bowl.

11. A facility, including comprising:
a moving arm; and
a fluid-spraying device according to claim 5 , wherein the turbine body of the fluid-spraying device is mounted directly on said arm.

12. The turbine according to claim 3 , wherein said turbine body is arranged so that during operation of the turbine, the ratio of the flow rate of the first portion of the jet of gas to the flow rate of the second portion of the jet of gas is greater than or equal to 3.

13. The turbine according to claim 3 , wherein said turbine body is arranged so that during operation of the turbine, the ratio of the flow rate of the first portion of the jet of gas to the flow rate of the second portion of the jet of gas is greater than or equal to 10.

14. The turbine according to claim 1 , wherein each outlet duct conducts the corresponding first portion into a free space separating the bowl from the skirt.

15. The turbine according to claim 7 , wherein each outlet duct opens into the corresponding radial groove.

16. The fluid-spraying device according to claim 5 , wherein said injector is received in an opening arranged in the first end face of the body of said turbine, wherein the opening comprises a first bearing face perpendicular to the common axis of rotation, and wherein said injector comprises a second bearing face that bears against said first bearing face.

Assignees

• Exel Ind

Inventors

• Vanzetto Denis
• Perinet Sylvain

Classifications

• B05B3/10

  discharging over substantially the whole periphery of the rotating member {(B05B3/082 takes precedence)} · CPC title

• B05B3/1035

  Driving means; Parts thereof, e.g. turbine, shaft, bearings · CPC title

• B05B3/02

  with rotating elements (electric spraying discharge apparatus characterised by having rotary outlet or deflecting elements B05B5/04) · CPC title

• B05B13/0431

  with spray heads moved by robots or articulated arms, e.g. for applying liquid or other fluent material to three-dimensional [3D] surfaces · CPC title

• B05B5/0426

  Means for supplying shaping gas · CPC title