A humidifying and sound-attenuating composite device and a fuel cell system

CN116581332BActive Publication Date: 2026-07-07WUHAN OUYUAN POWER TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WUHAN OUYUAN POWER TECH CO LTD
Filing Date
2023-05-17
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

In existing proton exchange membrane fuel cell systems, the muffler and humidifier are independent structures, which makes the system unsuitable for integrated and miniaturized design, and the noise reduction effect is limited. Furthermore, the air system noise is mainly broadband noise, which existing devices have failed to effectively address.

Method used

The front and rear end covers of the humidifier are replaced with a silencer assembly and an air outlet chamber, combining the humidifier and silencer. The design incorporates a micro-perforated structure and cavity resonance sound absorption principle to achieve a comprehensive humidification and noise reduction. By combining the micro-perforated structure and cavity resonance sound absorption principle, dry air noise is eliminated and humidity is increased.

Benefits of technology

This technology improves the noise reduction and air humidity of fuel cell systems without increasing the size of the device, meets the high air quality requirements of fuel cells, reduces pumping power, improves power generation efficiency, and extends battery life.

✦ Generated by Eureka AI based on patent content.

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    Figure CN116581332B_ABST
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Abstract

The application provides a humidifying and silencing composite device and a fuel cell system, which comprises a humidifier, a silencing assembly and an air outlet chamber. The humidifier comprises a cavity, the cavity is provided with a wet air inlet and a wet air outlet, one side of the cavity is provided with a dry air inlet, the other side of the cavity is provided with a dry air outlet, the silencing assembly is arranged on the dry air inlet and comprises a silencing chamber and a dispersion pipe, the dispersion pipe is arranged in the silencing chamber from outside to inside, and the air outlet chamber is arranged on the dry air outlet, wherein the air outlet chamber is provided with an air outlet pipe, the dispersion pipe is provided with a micro-perforated structure arranged around the dispersion pipe, the micro-perforated structure comprises a plurality of uniformly distributed micro-holes, and the aperture and the number of the micro-holes are set according to the silencing frequency. The front end cover and the rear end cover of the existing humidifier are removed and replaced by the silencing assembly and the air outlet chamber, so that the humidifier and the silencer are combined, the dry air can be humidified and de-noised, the volume of the humidifier is not changed greatly compared with the existing humidifier, and the space of the proton exchange membrane fuel cell system is greatly saved.
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