Fuel reforming device with heat storage member

Patent metadata

Field	Value
Publication number	US-10418653-B2
Application number	US-201715711053-A
Country	US
Kind code	B2
Filing date	Sep 21, 2017
Priority date	Oct 21, 2016
Publication date	Sep 17, 2019
Grant date	Sep 17, 2019

Abstract

A fuel reforming device includes a combustion part including a burner; an exhaust part configured to circulate an exhaust gas that is generated from the combustion part; and a reactor that is configured to generate hydrogen from a raw material by absorbing heat from the exhaust gas circulating in the exhaust part. The reactor includes a heat storage member that is configured to absorb the heat from the exhaust gas during operation of the combustion part, store the absorbed heat, and provide the absorbed heat to the reactor.

First claim

What is claimed is:

1. A fuel reforming device comprising:
a combustion part comprising a burner;
an exhaust part configured to circulate an exhaust gas that is generated from the combustion part; and
a reactor that is configured to generate hydrogen from a raw material by absorbing heat from the exhaust gas circulating in the exhaust part,
wherein the reactor comprises a heat storage member that is configured to absorb the heat from the exhaust gas during operation of the combustion part, store the absorbed heat, and provide the absorbed heat to the reactor,
wherein the heat storage member includes a surface portion that is made of Cu, and a phase change portion that is made from an Al alloy.

2. The fuel reforming device of claim 1 , wherein
the phase change portion has a first melting temperature that is lower than a second melting temperature of the surface portion and a first latent heat that is higher than a second latent heat of the surface portion.

3. The fuel reforming device of claim 1 , further comprising a temperature controller configured to maintain a temperature of the heat storage member.

4. The fuel reforming device of claim 3 , wherein the temperature controller comprises:
at least one temperature sensor configured to detect at least one temperature of the reactor, the at least one temperature sensor arranged along a moving direction of the exhaust gas; and
at least one processor configured to control an operation of the burner by comparing the at least one temperature detected by the at least one temperature sensor with a melting temperature of the heat storage member.

5. The fuel reforming device of claim 4 , wherein the at least one processor is further configured to control the burner to maintain a lowest temperature among the at least one temperature detected by the at least one temperature sensor to be higher than the melting temperature of the heat storage member.

6. The fuel reforming device of claim 1 , wherein the heat storage member comprises a plurality of ball-shaped heat-storing members provided in the reactor.

7. The fuel reforming device of claim 6 , wherein the reactor comprises a splitter that defines two or more spaces within the reactor that are separated by the splitter, and
wherein the heat storage member is arranged at the two or more spaces defined within the reactor.

8. The fuel reforming device of claim 7 , wherein an inner circumferential portion of the splitter or an outer circumferential portion of the splitter is fixed to an inner circumferential portion or an outer circumferential portion of the reactor.

9. The fuel reforming device of claim 8 , wherein the splitter comprises a plurality of splitters arranged at intervals along a lengthwise direction of the reactor,
wherein the plurality of splitters are alternately fixed to the inner circumferential portion and the outer circumferential portion of the reactor in a zigzag pattern.

10. The fuel reforming device of claim 7 , wherein the splitter is spaced apart from both an inner circumferential portion and an outer circumferential portion of the reactor.

11. The fuel reforming device of claim 7 , wherein the splitter is arranged along a lengthwise direction between an inner circumferential portion and an outer circumferential portion of the reactor and define an inner circumference space and an outer circumference space in the reactor that are separated by the splitter.

12. The fuel reforming device of claim 7 , wherein the splitter is provided with a plurality of gas through-holes providing access between the two or more spaces within the reactor that are separated by the splitter.

13. The fuel reforming device of claim 7 , wherein the splitter is made of a material having a first melting temperature that is higher than a second melting temperature of the heat storage member.

14. The fuel reforming device of claim 1 , wherein the reactor further comprises a catalytic member.

15. The fuel reforming device of claim 1 , wherein the reactor is arranged adjacent to the combustion part and the exhaustion part and defines a space therebetween, and the heat storage member is provided inside the space.

16. A fuel reforming device comprising:
a combustion part comprising a burner;
an exhaust part configured to circulate an exhaust gas that is generated from the combustion part;
a reactor that is configured to generate hydrogen from a raw material by absorbing heat from the exhaust gas circulating in the exhaust part;
a heat storage member that is provided in the reactor and that is configured to absorb the heat from the exhaust gas during operation of the combustion part, store the absorbed heat, and provide the absorbed heat to the reactor, wherein the heat storage member includes a surface portion that is made of Cu, and a phase change portion that is made from an Al alloy;
a plurality of temperature sensors configured to detect a plurality of temperatures of the reactor, the plurality of temperature sensors arranged in the reactor along a moving direction of the exhaust gas; and
at least one processor configured to control an operation of the burner by comparing the plurality of temperatures detected by the plurality of temperature sensors with a melting temperature of the heat storage member.

17. The fuel reforming device of claim 16 , wherein
the phase change portion has a first melting temperature that is lower than a second melting temperature of the surface portion and a first latent heat that is higher than a second latent heat of the surface portion.

18. The fuel reforming device of claim 17 , wherein the at least one processor is further configured to:
control an input unit to receive information regarding the plurality of temperatures detected by the plurality of temperature sensors;
determine whether to operate the burner based on comparing the plurality of temperatures with a threshold temperature; and
control an output unit to transmit an operation signal or a stop signal to the burner in accordance with a result of determining whether to operate the burner based on comparing the plurality of temperatures with the threshold temperature.

19. The fuel reforming device of claim 18 , wherein the at least one processor is further configured to:
control the output unit to transmit the operation signal to operate the burner based on a determination that the plurality of temperatures are lower than the threshold temperature; and
control the output unit to transmit the stop signal to maintain a stopped state of the burner based on a determination that the plurality of temperatures are higher than the threshold temperature.

Assignees

• Lg Electronics Inc

Inventors

• Woo Hyoungsuk
• Ryu Choonjae
• Yang Dongkeun

Classifications

• B01J2208/00504

  by means of a burner · CPC title

• B01J8/0496

  Heating or cooling the reactor · CPC title

• B01J8/0465 Primary

  the beds being concentric · CPC title

• B01J19/244

  Concentric tubes · CPC title

• H01M8/04738

  of auxiliary devices, e.g. reformer, compressor, burner · CPC title