IP Library Granted Patent US 7,175,745
Granted Patent B2
US 7,175,745 · App. 10/363,138 · Granted Feb 13, 2007

Method of manufacturing electrolyzer unit, and method and system for welding electrolyzer unit and electrolyzer unit rib

Assignees: Asahi Kasei Chemicals Corporation; Fujita Works Co., Ltd.
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Quick Facts
Patent No.
US 7,175,745
App. No.
10/363,138
Granted
Feb 13, 2007
Kind
B2
Abstract

The invention has an object of facilitating the detection of defective welds and improving the efficiency of manufacturing electrolyzer units. A a method of manufacturing an electrolyzer unit comprises a step of arranging a partition member on a front surface of a cathode pan and welding a top side and a left side of the cathode pan to the partition member to form a gas-liquid separation chamber, a step of performing a similar step on an anode pan, a step of arranging cathode ribs on a front surface of the cathode pan and clad plates on a back surface of the cathode pan at positions corresponding to the cathode ribs, welding them at the same time, putting a back surface of the anode pan over the back surface of the cathode pan and arranging anode ribs on a front surface of the anode pan at positions corresponding to the clad plates, a step of simultaneously performing on the anode pan a similar step of arranging anode ribs on a front surface of the anode pan at positions corresponding to the clad plates, and a step of inserting frame members into spaces formed between flange portions of the cathode pan and flange portions of the anode pan.

Claims (34)

1. A method of manufacturing an electrolyzer unit comprising the steps of:

arranging a partition member on a front surface of a first pan formed with flange portions at its periphery and welding at least a part of the partition member to the flange portions of the first pan to form a gas-liquid separation chamber;

arranging a partition member on a front surface of a second pan formed with flange portions at its periphery and welding at least a part of the partition member to the flange portions of the second pan to form a gas-liquid separation chamber;

arranging a plurality of first ribs on the front surface of the first pan and welding together the front surface of the first pan and the respective ribs;

arranging a plurality of clad plates on a back surface of the first pan and welding together the back surface of the first pan and one surface of the respective clad plates;

putting the back surface of the first pan over a back surface of the second pan and welding the back surface of the second pan to the other surface of the clad plates;

arranging a plurality of second ribs on the front surface of the second pan and welding the front surface of the second pan to the respective ribs; and

inserting frame members into spaces formed between the flange portions of the first pan and the flange portions of the second pan,

wherein when arranging the first ribs on the front surface of the first pan, front ends of the respective ribs are fitted into a plurality of openings formed beforehand in the partition member and then welding between the front surface of the first pan and the respective ribs is carried out; and

when arranging the second ribs on the front surface of the second pan, front ends of the respective ribs are fitted into a plurality of openings formed beforehand in the partition member and then welding between the front surface of the second pan and the respective ribs is carried out.

2. A method of manufacturing an electrolyzer unit as claimed in claim 1 , wherein, before all the frame members are inserted into the spaces formed between the flange portions of the first pan and the flange portions of the second pan, reinforcement members are inserted into vacant spaces between the back surface of the first pan and the back surface of the second pan.

3. A method of manufacturing an electrolyzer unit as claimed in claim 1 , wherein before the partition members are arranged respectively on the front surfaces of the first pan and the second pan, discharge boxes are welded to the respective partition members.

4. A method of manufacturing an electrolyzer unit comprising the steps of:

arranging a partition member on a front surface of a first pan formed with flange portions at its periphery and welding at least a part of the partition member to the flange portions of the first pan to form a gas-liquid separation chamber;

arranging a partition member on a front surface of a second pan formed with flange portions at its periphery and welding at least a part of the partition member to the flange portions of the second pan to form a gas-liquid separation chamber;

arranging a plurality of first ribs on the front surface of the first pan and welding together the front surface of the first pan and the respective ribs;

arranging a plurality of clad plates on a back surface of the first pan and welding together the back surface of the first pan and one surface of the respective clad plates;

putting the back surface of the first pan over a back surface of the second pan and welding the back surface of the second pan to the other surface of the clad plates;

arranging a plurality of second ribs on the front surface of the second pan and welding the front surface of the second pan to the respective ribs; and

inserting frame members into spaces formed between the flange portions of the first pan and the flange portions of the second pan,

wherein the partition member is welded to the flange portion before the frame members are inserted into the spaces,

among the frame members, the frame members arranged at a top and a bottom of the electrolyzer unit are formed with through-holes at corresponding positions, and

after inserting the frame members into the spaces formed between the flange portions of the first pan and the flange portions of the second pan, tension rods are inserted through the through-holes into vacant spaces between the back surface of the first pan and the back surface of the second pan, upper ends of the tension rods are joined to the top frame member and lower ends of the tension rods are joined to the bottom frame member.

5. A method of manufacturing an electrolyzer unit comprising the steps of:

arranging a partition member on a front surface of a first pan formed with flange portions at its periphery and welding at least a part of the partition member to the flange portions of the first pan to form a gas-liquid separation chamber;

arranging a partition member on a front surface of a second pan formed with flange portions at its periphery and welding at least a part of the partition member to the flange portions of the second pan to form a gas-liquid separation chamber;

arranging a plurality of first ribs on the front surface of the first pan and welding together the front surface of the first pan and the respective ribs;

arranging a plurality of clad plates on a back surface of the first pan and welding together the back surface of the first pan and one surface of the respective clad plates;

putting the back surface of the first pan over a back surface of the second pan and welding the back surface of the second pan to the other surface of the clad plates;

arranging a plurality of second ribs on the front surface of the second pan and welding the front surface of the second pan to the respective ribs; and

inserting frame members into spaces formed between the flange portions of the first pan and the flange portions of the second pan,

wherein when arranging the first ribs on the front surface of the first pan, front ends of the respective ribs are fitted into a plurality of openings formed beforehand in the partition member and then welding between the front surface of the first pan and the respective ribs is carried out,

when arranging the second ribs on the front surface of the second pan, front ends of the respective ribs are fitted into a plurality of openings formed beforehand in the partition member and then welding between the front surface of the second pan and the respective ribs is carried out,

among the frame members, the frame members arranged at a top and a bottom of the electrolyzer unit are formed with through-holes at corresponding positions, and after inserting the frame members into the spaces formed between the flange portions of the first pan and the flange portions of the second pan, tension rods are inserted through the through-holes into vacant spaces between the back surface of the first pan and the back surface of the second pan, upper ends of the tension rods are joined to the top frame member and lower ends of the tension rods are joined to the bottom frame member.

Assignments (3)
MERGER Recorded Jul 13, 2016
From: ASAHI KASEI CHEMICALS
To: ASAHI KASEI KABUSHIKI KAISHA
Reel/Frame 039142/0710 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 3, 2004
From: ASAHI KASEI KABUSHIKI KAISHA
To: ASAHI KASEI CHEMICALS CORPORATION
Reel/Frame 015950/0688 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 6, 2003
From: FUJITA, KOJI
To: ASAHI KASEI KABUSHIKI KAISHA; FUJITA WORKS CO., LTD.
Reel/Frame 014252/0569 →
Priority Claims (2)
JP 2000-272779 · Sep 8, 2000 · national
JP 2001-266925 · Sep 4, 2001 · national
Continuity (1)
Related Publication 20040007458A1 · Jan 15, 2004