Electrolytic Ozone Generator with Membrane Electrode

Abstract

An electrolytic ozone generator with membrane electrode includes a proton exchange membrane (2), an anode electrocatalyst layer (3), an anode diffusion layer (4), a flow field plate (5), a cathode structure (1) and a frame body (6). The frame boy (6) has a frame sealing groove (11) therein. A seal (7) is provided in the frame sealing groove (11). The frame body (6) is tightly connected with the cathode structure (1) through screws (9) so that the seal (7) is to seal the proton exchange membrane (2), the anode electrocatalyst layer (3) and the frame body (6) completely and tightly. The present invention has a simple structure, is cost-effective and provides a better seal effect to achieve mass production. After a period of operation, the electrolytic ozone generator still keeps an excellent seal, so that the electrolytic ozone generator can generate ozone steadily.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to an electrolytic ozone generator, and more particularly to an electrolytic ozone generator with membrane electrode with pure water as raw material.[0003]2. Description of the Prior Art[0004]There are many electrolytic ozone generators on the market, such as Chinese Utility Model Patent No. ZL200520113829.9 titled “anode structure of electrolytic ozone generator” and Chinese Patent Application No. 97122126.X titled “electrolytic ozone generator”. The aforesaid structures have the following shortcomings.[0005]1. Ozone has a strong oxidized corrosion. During operation, the large-sized seal gets contact with ozone direct. The surface area is large, which is easy to be oxidized and corroded. After a period of time, the seal will be aging and its seal capability will lose to result in leakage of gas and source water.[0006]2. There are many seals in the conventional ozone generator. This increas...

AI Technical Summary

Benefits of technology

The present invention provides an electrolytic ozone generator with membrane electrode that has a simple structure, is cost-effective, and provides a better seal effect to achieve mass production. The electrolytic ozone generator includes a proton exchange membrane, an anode electrocatalyst layer, an anode diffusion layer, a flow field plate, and a cathode structure. The frame body is tightly connected with the cathode structure through screws, ensuring a stable seal. The seal is made of a fluoroplastic encapsulated O-ring that is not oxidized and corrosed by ozone. The frame body and the fastening plate are tightly connected with the cathode structure through screws, providing a stable tightening force. The conductive column is inlayed in the conductive column encapsulating body, and the deflector grooves are annular deflector grooves. The electrolytic ozone generator with membrane electrode has a stable function and can generate ozone stably. The thickness of the anode electrocatalyst layer will gradually be thinner, and the fastening plate applies a fastening force to compensate for the lost pressure.

Problems solved by technology

1. Ozone has a strong oxidized corrosion. During operation, the large-sized seal gets contact with ozone direct. The surface area is large, which is easy to be oxidized and corroded. After a period of time, the seal will be aging and its seal capability will lose to result in leakage of gas and source water.

2. There are many seals in the conventional ozone generator. This increases cost and the operation is complicated. No matter how small the ozone contact area is, the oxidization and corrosion cannot be avoided, so the seal may lose its efficacy.

3. After a long time, the seal made of silicon rubber is unable to resist ozone of high concentration and will harden to lose its resilience, without seal function.

4. After fastened, the fastening force provides two pressures to deform the seal and to the anode electrocataly layer for fastening the proton exchange membrane. The pressure to deform the seal and the pressure for the anode electrocataly layer to fasten the proton exchange membrane are different, which will cause the other pressure too large or too small. The seal capability and the anode electrocataly layer to fasten the proton exchange membrane are influenced, so the electrolytic ozone generator with membrane electrode is unstable and the volume of ozone may decrease.

5. After operation, the thickness of the anode electrocataly layer gradually thin, and the fastening plate cannot provide enough pressure and is unable to compensate for the lost pressure caused by the thin anode electrocataly layer, so the anode structure of the electrolytic ozone generator is loosened. The pressure to the anode electrocataly layer and the proton exchange membrane is not enough, so the volume of ozone generated by the electrolytic ozone generator with membrane electrode is decreased.

6. The conventional cathode structure comprises a cathode fixed plate, an anticorrosive plate, a frame, a deflector plate, a seal, an anode diffusion layer, a cathode electrocatalyst layer, which has too many parts. The production and assembly are complicated to influence its reliability and to increase cost.

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