Title:
GAS CIRCULATION PUMP SYSTEM FOR FUEL CELL
Document Type and Number:
Japanese Patent JP3411747
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To ensure a safe and long time operation by placing an operation casing having a recess part in an airtight vessel, and vibrating a diaphragm layed stretchwise at an opening of the recess.
SOLUTION: Hydrogen and oxygen are supplide to a fuel cell main body through a supply pipe to generate an electrochemical reaction, implementing power generation. Unreacted gas discharged therefrom is returned to the pipe by means of a circulation pump. In such a circulation pump system for a fuel cell, a diaphragm pump is used for the circulation pump. This pomp 8A is installed in an operation casing 13 having a recess part 19 in a vessel 11 capable of being retained in an airtight condition, the diaphragm 22 layed stretchwise across the recessed part 19 is vibrated up and down through a rod 25 mounted on a rotary plate 24 and a vibrator 26. The recess 19 is communicated with intake and discharge pipes 14, 15 for unreacted gas inserted from an upper cover 23 through a seal device 18. The inside of the vessel 11 is controlled in its pressure by the pressure control gas supplied from a gas supply port 12.
Inventors:
Toshihiro Tani
Nagao Kuru
Nagao Kuru
Application Number:
JP6598796A
Publication Date:
June 03, 2003
Filing Date:
March 22, 1996
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES,LTD.
International Classes:
F04B43/02; H01M8/04; H01M8/10; H01M8/12; (IPC1-7): H01M8/04; F04B43/02; H01M8/10
Domestic Patent References:
| JP5126051A | ||||
| JP7240220A | ||||
| JP594832A |
Attorney, Agent or Firm:
Arata Ishikawa
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