Insulated hose arrangements

Patent metadata

Field	Value
Publication number	US-11614183-B2
Application number	US-202016810900-A
Country	US
Kind code	B2
Filing date	Mar 6, 2020
Priority date	Mar 15, 2019
Publication date	Mar 28, 2023
Grant date	Mar 28, 2023

Abstract

A hose assembly includes a hose defining an internal fluid passage and an exterior surface, an end connection attached to a first end of the hose, an insulation material wrapped onto the exterior surface of the hose, a cover installed over the insulation material, and an elastomeric sleeve extending over and in compressive engagement with at least a portion of the end connection and the cover. The insulation material, the cover, and the elastomeric sleeve are each rated for continuous use at a temperature of at least about 135° C.

First claim

I claim:

1. A hose assembly comprising:
a hose defining an internal fluid passage and an exterior surface;
an end connection attached to a first end of the hose;
an insulation material wrapped onto the exterior surface of the hose;
a cover surrounding the insulation material; and
an elastomeric sleeve extending over and in compressive engagement with at least a portion of the end connection and the cover, the elastomeric sleeve being provided in a material configured to permit elastic stretched installation of the elastomeric sleeve over the end connection and the cover;
wherein the insulation material, the cover, and the elastomeric sleeve are each rated for continuous use at a temperature of at least about 135° C.

2. The hose assembly of claim 1 , wherein the insulation material comprises a PTFE-based aerogel.

3. The hose assembly of claim 1 , wherein the insulation material is rated for continuous use at temperatures between about −53° C. and about 250° C.

4. The hose assembly of claim 1 , wherein the insulation material is rated for continuous use at a temperature of at least about 250° C.

5. The hose assembly of claim 1 , wherein the insulation material has a maximum thermal conductivity of less than about 25 mW/m K at about 23° C.

6. The hose assembly of claim 1 , wherein the insulation material is capable of meeting UL94 V-0 flammability ratings.

7. The hose assembly of claim 1 , wherein the insulation material comprises a first strip of insulation material spiral wrapped onto the exterior surface of the hose.

8. The hose assembly of claim 7 , wherein the first strip of insulation material is spiral wrapped onto the exterior surface of the hose with an approximately 50% overlap.

9. The hose assembly of claim 7 , wherein the insulation material comprises a second strip of insulation material spiral wrapped onto the first strip of insulation material.

10. The hose assembly of claim 7 , wherein the first strip of insulation material has a maximum elongation along the length of about 1% at 5 lbs tensile force, and a minimum elongation across the width of about 10% at 5 lbs tensile force.

11. The hose assembly of claim 1 , wherein the cover comprises a fabric cover wrapped onto the insulation material.

12. The hose assembly of claim 11 , wherein the fabric cover comprises a PTFE/polyester engineered fabric.

13. The hose assembly of claim 11 , wherein the fabric cover comprises a fabric strip spiral wrapped onto the insulation material.

14. The hose assembly of claim 13 , wherein the fabric strip is spiral wrapped onto the insulation material with an approximately 50% overlap.

15. The hose assembly of claim 13 , wherein the fabric strip is spiral wrapped onto the insulation material without adhesive.

16. The hose assembly of claim 13 , wherein the fabric strip is spiral wrapped to maintain a tension of at least about 5 lbs.

17. The hose assembly of claim 1 , wherein the cover comprises a heat shrunk polymeric tube.

18. The hose assembly of claim 17 , wherein the polymeric tube comprises polyolefin.

19. The hose assembly of claim 1 , wherein the elastomeric sleeve comprises silicone.

20. The hose assembly of claim 19 , wherein the elastomeric sleeve comprises a peroxide cured silicone.

21. The hose assembly of claim 1 , wherein the elastomeric sleeve is rated for continuous use at a temperature of at least about 250° C.

22. The hose assembly of claim 1 , wherein the hose comprises a corrugated metal tube defining the internal fluid passage.

23. The hose assembly of claim 1 , wherein the hose comprises a braided metal sheath defining the exterior surface.

24. The hose assembly of claim 1 , further comprising a second end connection attached to a second end of the hose, and a second elastomeric sleeve extending over and in compressive engagement with at least a portion of the second end connection and the cover.

25. A method of making an insulated hose assembly, the method comprising:
providing a hose defining an internal fluid passage and an exterior surface, and an end connection attached to a first end of the hose;
wrapping an insulation material onto the exterior surface of the hose;
installing a cover around the insulation material; and
elastically stretching an elastomeric sleeve over and into compressive engagement with at least a portion of the end connection and the cover;
wherein the insulation material, the cover, and the elastomeric sleeve are each rated for continuous use at a temperature of at least about 135° C.

Assignees

• Swagelok Co

Inventors

• Gutmann Daniel

Classifications

• F16L33/00

  Arrangements for connecting hoses to rigid members; Rigid hose-connectors, i.e. single members engaging both hoses (connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics F16L47/00) · CPC title

• F16L11/045

  with four or more layers without reinforcement · CPC title

• F16L11/10 Primary

  with reinforcements not embedded in the wall (F16L11/11 takes precedence) · CPC title

• F16L33/22

  with means not mentioned in the preceding groups for gripping the hose between inner and outer parts · CPC title

• F16L33/01 Primary

  specially adapted for hoses having a multi-layer wall · CPC title