Device with sealed inner chamber

Patent metadata

Field	Value
Publication number	US-12315690-B2
Application number	US-202118006827-A
Country	US
Kind code	B2
Filing date	Jul 23, 2021
Priority date	Jul 28, 2020
Publication date	May 27, 2025
Grant date	May 27, 2025

Abstract

The disclosure includes a sealed device having a seal around an internal chamber, the seal having at least two closed-loop portions through which a through element extends.

First claim

The invention claimed is:

1. A device comprising:
an assembly of a first part and a second part defining a body of the device and delimiting an internal chamber,
a through element extending through the internal chamber between the first part and the second part, and
a seal of the internal chamber surrounding the internal chamber, configured to produce a sealing against a plasma or a gas present in the internal chamber, the seal comprising at least two closed-loop portions which surround the through element and ensure a sealing along the through element, and at least two connection portions connecting the closed-loop portions and present between the first part and the second part and ensuring a sealing therebetween, wherein the at least two closed-loop portions and the at least two connection portions surround an entire circumference of the internal chamber.

2. The device according to claim 1 , wherein a section of the through element has rounded corners.

3. The device according to claim 1 , wherein the seal is made of a flexible material, and wherein the closed-loop portions are oriented transversely to a plane containing the connection portions by pivoting therearound.

4. The device according to claim 1 , wherein the closed-loop portions are diametrically opposite.

5. The device according to claim 4 , wherein the closed-loop portions have a rectangular shape, and the through element has a rectangular section at least at a level of the closed-loop portions.

6. The device according to claim 4 , wherein a section of the through element has rounded corners.

7. The device according to claim 4 , wherein the seal is made of a flexible material, and wherein the closed-loop portions are oriented transversely to a plane containing the connection portions by pivoting therearound.

8. The device according to claim 1 , wherein the closed-loop portions have a rectangular shape, and the through element has a rectangular section at least at a level of the closed-loop portions.

9. The device according to claim 8 , wherein the section of the through element has rounded corners.

10. The device according to claim 8 , wherein the seal is made of a flexible material, and wherein the closed-loop portions are oriented transversely to a plane containing the connection portions by pivoting therearound.

11. The device according to claim 1 , wherein the device is an electrical cut-off device, the through element being a conductive element, the device comprising a movable piston in the internal chamber able to break the through element following its setting in motion.

12. The device according to claim 11 , wherein the device is a pyrotechnic cut-off device which comprises a pyrotechnic initiator, the piston being able to move following an actuation of the pyrotechnic initiator.

13. The device according to claim 11 , wherein the internal chamber is filled with a dielectric gas whose breakdown voltage is greater than the breakdown voltage of air at a reference pressure taken at 1 bar.

14. The device according to claim 13 , wherein the dielectric gas pressurizes the internal chamber to a pressure of at least 1 bar at a temperature of −40° C.

15. The device according to claim 13 , wherein the dielectric gas comprises at least 2,3,3,3-tetrafluoro-2-(trifluoromethyl)propanenitrile(CF3)2CFCN.

16. The device according to claim 15 , wherein the dielectric gas further comprises at least one gas among air, nitrogen and carbon dioxide.

17. The device according to claim 15 , wherein a molar content of 2,3,3,3-tetrafluoro-2-(trifluoromethyl)propanenitrile(CF3)2CFCN in the dielectric gas is comprised between 10% and 60%.

18. An electrical installation comprising a cut-off device according to claim 11 and an electrical circuit connected to the through element.

19. A vehicle comprising an electrical installation according to claim 18 .

20. A device comprising:
an assembly of a first part and a second part defining a body of the device and delimiting an internal chamber,
a through element extending through the internal chamber between the first part and the second part, and
a seal of the internal chamber surrounding the internal chamber, configured to seal against a plasma or a gas present in the internal chamber, the seal comprising at least two closed-loop portions which surround the through element and ensure sealing along the through element, and at least two connection portions connecting the closed-loop portions and present between the first part and the second part and ensuring sealing therebetween, wherein the first part and the second part each comprise a slot that receives the seal, a depth of the portions of the slot which receive the closed-loop portions of the seal is greater than a depth of the portions of the slot which receives the connection portions of the seal.

Assignees

• Arianegroup Sas

Inventors

• Marlin Frédéric
• Lorenzon Romain

Classifications

• H01H9/30

  Means for extinguishing or preventing arc between current-carrying parts · CPC title

• H01H9/04

  Dustproof, splashproof, drip-proof, waterproof, or flameproof casings · CPC title

• H01H1/66

  Contacts sealed in an evacuated or gas-filled envelope, e.g. magnetic dry-reed contacts · CPC title

• H01H9/042

  Explosion-proof cases · CPC title

• H01H39/006 Primary

  Opening by severing a conductor · CPC title