US 2007/0178352 A1Published application

Fuel cell system with muffler

AssigneeSamsung SDI Co., Ltd.

InventorsIn Youl Jeon, Sang Hyeon Choi, Joon Soo Bae, Min Jung Oh

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Abstract

A fuel cell system with a muffler to reduce noise generated while supplying air to a fuel cell is disclosed. One embodiment of the fuel cell system includes an air feeder to supply air; an electric generator to generate electricity through an electrochemical reaction between air and fuel; and a muffler provided in one end of the air feeder. The muffler includes a first pipe and a second pipe which are different in length from each other. The muffler has a relatively small structure, so that limitation in a mounting space can be decreased and a more compact fuel cell system can be realized. Also, even if there are considerable noise components at two or more frequencies, the mufflers corresponding to the respective frequencies are connected in series, thereby reducing the noise.

Claims21

Dependent claims

A fuel cell system comprising:

an electric generator configured to generate electricity through an electrochemical reaction between air and fuel;
an air feeder configured to supply air to the electric generator, the air feeder comprising an inlet and an outlet;
and
a muffler in fluid communication with one of the inlet and outlet of the air feeder, the muffler comprising:
a first air passageway having a first end and a second end, the first air passageway having a first length extending along the first air passageway between the first and second ends of the first air passageway;
and
a second air passageway having a first end and a second end, the second air passageway having a second length extending along the second air passageway between the first and second ends of the second air passageway, the first end of the second air passageway being connected to the first end of the first air passageway, the second end of the second air passageway being connected to the second end of the first air passageway, the second length being different from the first length.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 11/657,847Filed 24 Jan 2007
Priority: KR 10-2006-00102962 Feb 2006
Published: 2 Aug 2007
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

H01M 8/04
Fuel cells; Manufacture thereof: auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
F01N 1/06
Silencing apparatus characterised by method of silencing: by using interference effect
F01N 13/02
Exhaust or silencing apparatus characterised by constructional features: having two or more separate silencers in series
H01M 8/1011
With one of the reactants being liquid, solid or liquid-charged: direct alcohol fuel cells [DAFC], e.g. direct methanol fuel cells [DMFC]