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Fuel cell system

A fuel cell system and fuel cell technology, used in fuel cells, fuel cell additives, circuits, etc., can solve problems such as breaking the pressure balance, blocking the fuel supply path, and stopping the operation of the fuel cell system.

Inactive Publication Date: 2004-01-07
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the moisture contained in the exhaust gas condenses on the fire prevention part 12 arranged to prevent backfire, and as a result, the fuel supply path is blocked, the pressure balance is broken, and the operation of the entire fuel cell system may be stopped.

Method used

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Examples

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Embodiment 1

[0027] FIG. 1 is a schematic diagram showing the configuration of a fuel cell system according to Embodiment 1 of the present invention. The fuel cell system of Example 1 has a reforming unit 1 in which a reforming catalyst is incorporated, a raw material supply unit 2 for supplying raw materials to the reforming unit 1, a water supply unit 3 for supplying water to the reforming unit 1, and a combustion furnace 4 for heating the reforming catalyst. . In the reforming section 1, the raw material (gas) and water react to produce hydrogen. In addition, a fuel supply unit 5 for supplying fuel to the combustion furnace 4 and an air supply unit 6 for supplying air to the combustion furnace 4 are provided.

[0028] Here, as the raw materials and fuels respectively supplied from the raw material supply unit 2 and the fuel supply unit 5, gaseous hydrocarbon fuels such as natural gas (city gas) and LPG, liquid hydrocarbon fuels such as gasoline and kerosene, and alcohols such as methan...

Embodiment 2

[0040] Fig. 2 is a schematic structural view of the fuel cell system in Embodiment 2 of the present invention. Embodiment 2 differs from Embodiment 1 in that, as shown in FIG. 2 , a first temperature detector 14 is arranged near the fireproof part 12 , and the operation of the heater 13 is controlled according to the signal of the temperature detector 14 . In addition, the control part which controls the operation of the heater 13 based on the signal of the temperature detector 14 is not shown in a figure.

[0041] For example, a thermistor can be used as the first temperature detector 14 . Other than thermistors, for example, thermocouples and platinum resistors can be used.

[0042] The first temperature detector 14 may be arranged at a position in contact with the fireproof part 12, or may be arranged at a position where the temperature of the fireproof part 12 can be detected indirectly. Furthermore, the second temperature detector may be disposed at a position where hea...

Embodiment 3

[0048] Fig. 3 is a schematic diagram showing the configuration of a fuel cell system according to Embodiment 3 of the present invention. Embodiment 3 differs from Embodiment 1 in that, as shown in FIG. 3 , the fire prevention part 12 is arranged adjacent to the high-temperature combustion furnace 4 or the conversion part 1 to absorb the heat from these parts. The fire prevention part 12 can have a temperature equal to or higher than the dew point of the exhaust gas because heat can be obtained from these parts.

[0049] In this embodiment, since the combustion furnace 4 and the fire prevention part 12 are integrally formed, the heat from the combustion furnace 4 is easily transferred to the fire prevention part 12 by heat conduction. The temperature of the internal combustion part of the combustion furnace 4 is about 1000°C, and the reaction temperature of the reforming catalyst inside the reforming part 1 is about 700°C. Therefore, it is possible to use a method of transferr...

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PUM

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Abstract

A fuel cell system, comprising a reforming part, a material supply part for reforming part, a water supply part for reforming part, a fuel cell, a burner for the reforming part, an air supply part for the burner, a fuel supply part for the burner, a fuel supply route for supplying the fuel and the off gas from the fuel cell to the burner, a flametight part installed in the fuel supply route, and a heating means for heating the flametight part to stop a backfire without closing the fuel supply route.

Description

technical field [0001] The invention relates to a hydrogen generating device and a fuel cell system including a fuel cell. The hydrogen generating device is a device for generating hydrogen by using hydrocarbon substances such as natural gas, LPG, gasoline, crude oil or kerosene, methanol, etc., water and air as raw materials. Background technique [0002] Next, the configuration of a conventional fuel cell system will be described with reference to FIG. 6 . A conventional fuel cell system is equipped with a reformer 1 containing a reformer catalyst, a raw material supply unit 2 for supplying raw materials to the reformer 1 , a water supply unit 3 for supplying water to the reformer 1 , and a combustion furnace 4 for heating the reformer catalyst. In the conversion unit 1, hydrocarbons, ethanol, etc. react with water to generate hydrogen gas. In addition, in the conventional fuel cell system, a fuel supply part 5 for supplying fuel to the combustion furnace part 4, an air s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
CPCH01M8/0612Y02E60/50H01M8/06H01M8/04
Inventor 吉田丰麻生智伦前西晃富泽猛向井裕二鹈饲邦弘
Owner PANASONIC CORP
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