Flow pipe

Patent metadata

Field	Value
Publication number	US-11649918-B2
Application number	US-202117375141-A
Country	US
Kind code	B2
Filing date	Jul 14, 2021
Priority date	Jul 30, 2020
Publication date	May 16, 2023
Grant date	May 16, 2023

Abstract

There is provided a flow pipe including: a pipe body including a side wall having an opening portion; and a heat insulator arranged at an inner peripheral side of the pipe body and having a flow path through which a fluid flows. The heat insulator has an outer peripheral surface facing with the side wall, and the outer peripheral surface has a flow path structure configured to form a flow path that guides a water droplet generated between the heat insulator and the pipe body to the opening portion.

First claim

What is claimed is:

1. A flow pipe comprising:
a pipe body including a side wall having an opening portion; and
a heat insulator arranged at an inner peripheral side of the pipe body and having a flow path through which a fluid flows, wherein
the heat insulator has an outer peripheral surface facing with the side wall,
the outer peripheral surface has a flow path structure configured to form a flow path that guides a water droplet generated between the heat insulator and the pipe body to the opening portion, and
the opening portion is a slit formed from one end to an other end in a longitudinal direction of the pipe body.

2. The flow pipe according to claim 1 , wherein
the flow path structure includes a groove formed along a peripheral direction of the heat insulator,
the groove includes a plurality of grooves, and
the plurality of grooves are formed at regular intervals along the longitudinal direction.

3. The flow pipe according to claim 1 , wherein
the flow path structure includes a protruding portion that is in contact with the pipe body.

4. The flow pipe according to claim 1 , wherein
the heat insulator includes an aerogel.

5. The flow pipe according to claim 1 , wherein
as viewed at a cross section of the flow pipe, the slit is provided toward a downward direction.

6. A flow pipe comprising:
a pipe body having a flow path through which a fluid flows; and
a heat insulator arranged to surround the pipe body in a peripheral direction of the pipe body at an outer peripheral side of the pipe body, wherein
the heat insulator includes a side wall having an opening portion, and having an inner peripheral surface facing with the pipe body,
the inner peripheral surface has a flow path structure configured to form a flow path that guides a water droplet generated between the heat insulator and the pipe body to the opening portion,
the flow path structure includes:
a plurality of first grooves formed along a peripheral direction of the heat insulator and formed at regular intervals along a longitudinal direction of the flow pipe; and
a second groove extending along the longitudinal direction.

7. The flow pipe according to claim 6 , wherein
the flow path structure includes a protruding portion that is in contact with the pipe body.

8. The flow pipe according to claim 6 , wherein
the heat insulator includes an aerogel.

9. The flow pipe according to claim 6 , wherein
the first grooves are formed in a first region excluding a vicinity of the opening portion in the peripheral direction, and the second groove is formed in a second region other than the first region.

Assignees

• Jtekt Corp

Inventors

• Ryugo Kenichi
• Saito Toshiyuki
• Nakai Motoo
• Ando Yoshiaki

Classifications

• F16L59/022

  with a single slit · CPC title

• F16L59/141

  in which the temperature of the medium is below that of the ambient temperature · CPC title

• F16L59/12 Primary

  Arrangements for supporting insulation from the wall or body insulated, e.g. by means of spacers between pipe and heat-insulating material; Arrangements specially adapted for supporting insulated bodies · CPC title

• F16L59/147 Primary

  the insulation being located inwardly of the outer surface of the pipe · CPC title