Fuel cell filter capable of remarkably improving dehumidification performance and dehumidification filtering method thereof

Abstract

The invention discloses a fuel cell filter capable of remarkably improving dehumidification performance and a dehumidification filtering method thereof. The filter is of a three-layer coaxial bottle-shaped housing structure and sequentially comprises an inner housing, a middle housing and an outer housing from inside to outside; the inner housing is used for exhausting and is provided with a spiral partition plate, a water absorbing material and a harmful gas adsorbing material; a spiral ridge is arranged on the inner side of the middle housing, an air inlet is formed in the upper portion of the spiral ridge, multiple leaf protrusions are arranged at the bottom of the middle housing, and a self-cleaning channel is arranged on the periphery of the inner side of the bottom; and an air inletand a drain outlet are formed in the housing. Air containing various impurities flows downwards from the spiral channel, so that the impurities and the liquid drops do centrifugal motion and fall on the bottom surface of the middle-wall housing, and the large-particle impurities and the liquid drops are discharged out of the self-cleaning channel through rotation of the blade protrusions and are discharged out of the drain outlet; and then the air enters the inner housing, is subjected to graded dehumidification and harmful gas absorption and then, is exhausted through the air outlet. The problems that an existing air filter is poor in self-cleaning performance, and harmful gas harmful to the fuel cell stack cannot be removed are solved.

Description

technical field

[0001] The invention belongs to the technical field of fuel cell air supply, and relates to a fuel cell filter with significantly improved dehumidification performance and a dehumidification and filtering method thereof. Background technique

[0002] Proton exchange membrane fuel cells have become the first choice for vehicle fuel cells due to their various advantages. However, proton exchange membrane fuel cells have extremely high air requirements during operation, and toxic and harmful substances such as sulfur and carbon monoxide can cause catalyst poisoning and deactivation. In addition, in order to increase the power of the fuel cell stack, it is necessary to make the fuel cell work at a higher pressure, which is provided by a centrifugal compressor. Centrifugal compressors also have strict requirements on the suction air. Droplets and impurities in the air will cause abnormal vibration of the high-speed rotating air compressor blades, and even damage t...

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