Waste heat exchanger

Patent metadata

Field	Value
Publication number	US-9915184-B2
Application number	US-201414571118-A
Country	US
Kind code	B2
Filing date	Dec 15, 2014
Priority date	Aug 20, 2014
Publication date	Mar 13, 2018
Grant date	Mar 13, 2018

Abstract

A waste heat exchanger may include an inner tube, an outer tube, a fin assembly and a plurality of heat electric modules The inner tube has a plurality of holes. Disposed inside the inner tube is a plurality of inlet channels and a plurality of outlet channels. The plurality of inlet channels and the plurality of outlet channels are disposed to correspond to each other. The plurality of inlet channels and the plurality of outlet channels are connected to the plurality of holes. A fluid flows through the plurality of inlets and the plurality of holes to get into the outlet channels. The outer tube is disposed outside the inner tube. The conductive assembly is positioned between the inner tube and the outer tube. The conductive assembly is disposed on an outside surface of the inner tube and an inside surface of the outer tube.

First claim

What is claimed is:

1. A waste heat exchanger, comprising:
an inner tube having a plurality of holes, wherein disposed in the inside of the inner tube is a plurality of inlet channels and a plurality of outlet channels, the plurality of inlet channels and the plurality of outlet channels being disposed to correspond to each other, the plurality of inlet channels and the plurality of outlet channels connected to the plurality of holes, a fluid flowing through the plurality of inlets and the plurality of holes to get into the outlet channels;
an outer tube disposed on an outside surface of the inner tube; and
a conductive assembly positioned between the inner tube and the outer tube, the conductive assembly disposed on the outside surface of the inner tube and an inside surface of the outer tube, wherein the conductive assembly comprises a plurality of fin structures.

2. The waste heat exchanger according to claim 1 , wherein the plurality of holes is arranged in a plurality of straight lines.

3. The waste heat exchanger according to claim 1 , wherein the plurality of holes includes a plurality of inlet holes and a plurality of outlet holes, the plurality of inlet holes communicating with the plurality of inlet channels, the plurality of outlet holes communicating with the plurality of outlet channels.

4. The waste heat exchanger according to claim 3 , wherein the inlet channel has a first end and a second end, an area of the first end of the inlet channel is greater than an area of the second end of the inlet channel, the outlet channel having a first end and a second end, and an area of the first end of the outlet channel is smaller than an area of the second end of the outlet channel.

5. The waste heat exchanger according to claim 4 , wherein the inlet channel is a V-shaped structure, the inlet channel being gradually reduced from the first end of the inlet channel to the second end of the inlet channel, the outlet channel is a V-shaped structure, the outlet channel is gradually enlarged from the first end of the outlet channel to the second end of the outlet channel; and
the first end of the inlet channel is connected to the first end of the outlet channel, the second end of the inlet channel is connected to the second end of the outlet channel, the V-shaped structure of the inlet channel is spaced at an interval to connect the V-shaped structure of the outlet channel to each other.

6. The waste heat exchanger according to claim 1 , wherein the conductive assembly is a fin assembly, the fin assembly includes a plurality of fixed elements and the fin structures, the fin structures disposed on the fixed elements; and the fixed element has a plurality of embedded slots to fix the fin structure.

7. The waste heat exchanger according to claim 6 , wherein the fin structure includes a plurality of fins, and the fins are wave-shaped.

8. The waste heat exchanger according to claim 6 , wherein the fixed element is disposed on the outside surface of the inner tube, the fin assembly is positioned at two ends of the fixed element, and the fin assembly is fixed on the inside surface of the outer tube.

9. The waste heat exchanger according to claim 6 , wherein the plurality of fixed elements includes a first fixed element and a second fixed element, the first fixed element having a plurality of first embedded slots to fix an outer edge part of the each fin structure, and the second fixed element having a plurality of second embedded slots to fix an inner edge part of the each fin structure.

10. The waste heat exchanger according to claim 9 , wherein the fin structure includes a plurality of fins, and the fins are wave-shaped.

11. The waste heat exchanger according to claim 9 , wherein the first fixed element is fixed on the inner surface of the outer tube, and the second fixed element is fixed on the outer surface of the inner tube.

12. The waste heat exchanger according to claim 1 , wherein the fluid is a gas or liquid.

13. The waste heat exchanger according to claim 1 , wherein the waste heat exchanger is an exhaust pipe waste heat exchanger, the inner tube has a round shape, the outer tube has a hexagonal shape, and the conductive assembly has a hexagonal shape.

14. The waste heat exchanger according to claim 1 , wherein the waste heat exchanger is an exhaust pipe waste heat exchanger, the inner tube has a round shape, the outer tube has a round shape, and the conductive assembly has a round shape.

15. The waste heat exchanger according to claim 1 , further comprising a plurality of thermoelectric modules disposed on the outer surface of the outer tube.

16. The waste heat exchanger according to claim 1 , wherein the waste heat exchanger is disposed on a pipe or in a box in order to take away a waste heat of the waste heat exchanger by a cooling fluid in the pipe or box.

17. A waster heat exchanger, comprising: an inner tube having a plurality of holes, wherein disposed in the inside of the inner tube is a plurality of inlet channels and a plurality of outlet channels, the plurality of inlet channels and the plurality of outlet channels being disposed to correspond to each other, the plurality of inlet channels and the plurality of outlet channels connected to the plurality of holes, a fluid flowing through the plurality of inlets and the plurality of holes to get into the outlet channels;
an outer tube disposed on an outside surface of the inner tube; and
a conductive assembly positioned between the inner tube and the outer tube, the conductive assembly disposed on the outside surface of the inner tube and an inside surface of the outer tube.

Assignees

• Ind Tech Res Inst

Inventors

• Han Wei-Kuo
• Liu Chun-Kai

Classifications

• F28D7/10

  the conduits being arranged one within the other, e.g. concentrically {(multiple wall tubes for leak detection F28F1/003)} · CPC title

• F28F1/04

  polygonal, e.g. rectangular {(F28F1/022 takes precedence)} · CPC title

• F28F1/42

  the means being both outside and inside the tubular element · CPC title

• F28D21/0003

  the heat being recuperated from exhaust gases (F28D21/0014 takes precedence) · CPC title

• F01N5/025 Primary

  the device being thermoelectric generators · CPC title