Protective enclosure for a movable tool for dispensing fluid at a cryogenic temperature

Patent metadata

Field	Value
Publication number	US-2016332282-A1
Application number	US-201415106422-A
Country	US
Kind code	A1
Filing date	Dec 17, 2014
Priority date	Dec 20, 2013
Publication date	Nov 17, 2016
Grant date	—

Abstract

The invention relates to a protective enclosure for a mobile tool for dispensing fluid at a cryogenic temperature, said protective enclosure comprising an open end forming an extraction bell, said open end comprising a skirt, characterized in that the skirt comprises a first part made from a hydrophobic first material.

First claim

1 .- 14 . (canceled)

15 . A protective enclosure ( 20 ) for a mobile tool ( 4 ) for dispensing fluid at a cryogenic temperature, said protective enclosure ( 20 ) comprising an open end forming an extraction bell, said open end comprising a skirt ( 21 ), wherein the skirt ( 21 ) comprises a first part made from a hydrophobic first material.

16 . The enclosure of claim 15 , wherein the first material has a water absorption less than 4% in accordance with the protocol for moisture absorption in a standard environment of 23° C./50% of international standard DIN EN ISO 62.

17 . The enclosure of claim 15 , wherein the skirt ( 21 ) comprises a second part made from an abrasion-resistant second material.

18 . The enclosure of claim 17 , wherein the first part is situated level with an external peripheral zone of the skirt and the second part is situated level with an internal peripheral zone of the skirt.

19 . The enclosure of claim 17 , wherein the first part and the second part are coincident.

20 . The enclosure of claim 17 , wherein the first material and the second material are selected from the following materials:
polybutylene terephthalate (PBT); polypropylene (PP); aramids; polyetheretherketone (PEEK); polyamide 6,6; polyamide 6,10; polyamide 6,12; polyamide 11; and combinations thereof.

21 . The enclosure of claim 15 , wherein the first part comprises bristles, said bristles being made from the hydrophobic first material.

22 . The enclosure of claim 17 , wherein the second part comprises bristles, said bristles being made from the abrasion-resistant second material.

23 . The enclosure of claim 21 , wherein the second part comprises bristles, said bristles being made from the abrasion-resistant second material, and wherein the length of the bristles of the first part is greater than the length of the bristles of the second part.

24 . The enclosure of claim 23 , wherein the bristles of the first part and/or second part have a diameter of between 0.2 mm and 0.5 mm.

25 . The enclosure of claim 23 , wherein the bristles of the first part are arranged in three concentric rows of bristles and/or in that the bristles of the second part are arranged in three concentric rows of bristles.

26 . The enclosure of claim 15 , wherein the open end of said enclosure has a conical or pyramid-shaped cross section.

27 . A method for defining the length of the bristles of a skirt of an enclosure for protecting a mobile fluid-dispensing tool, said tool comprising at least one fluid dispensing nozzle, said skirt comprising a first part comprising bristles and a second part comprising bristles, the first part being situated level with an external peripheral zone of the skirt, the second part being situated level with an internal peripheral zone of the skirt, said method comprising:
a step of defining a firing distance (d), said firing distance (d) corresponding to the distance between a distal end of the fluid dispensing nozzle and a surface ( 28 ) to be treated by the mobile tool; a step of defining a depth of pass (e), said depth of pass (e) corresponding to the depth of material to be removed by the treatment of the surface that is to be treated; a step of defining a first length of bristles for the first part, said first length being tailored so that the distance between the distal end of the fluid dispensing nozzle and a distal end of the bristles of the first part is equal to the sum of the firing distance (d) and of the depth of pass (e) increased by a value of between 0 and 40 mm; and a step of defining a second length of bristles ( 26 ) for the second part, said second length being tailored so that the distance between the distal end of the fluid dispensing nozzle and a distal end of the bristles of the second part is equal to the firing distance (d) increased by a value of between 0 and 20 mm.

28 . A working installation using at least one high-pressure jet of fluid at a cryogenic temperature, comprising:
a source of fluid at a cryogenic temperature connected fluidically to a mobile tool comprising at least one fluid dispensing nozzle to dispense at least one high-pressure jet of said fluid at a cryogenic temperature; and a protective enclosure of claim 1 , said enclosure being arranged around the mobile tool and fluidically connected to suction means, the open end of said enclosure forming the extraction bell around the mobile tool.

Assignees

• Air Liquide

Inventors

• Bigot David
• Quintard Jacques
• Richard Frédéric
• Truchot Charles
• Moggia Fabrice
• Objois Laurent

Classifications

• B24C9/003

  Removing abrasive powder out of the blasting machine · CPC title

• B08B3/02

  Cleaning by the force of jets or sprays · CPC title

• B24C1/003 Primary

  using material which dissolves or changes phase after the treatment, e.g. ice, CO2 · CPC title