A liquid fluid mixer and its application in direct liquid fuel cell

Abstract

The invention provides a liquid fluid mixer and its application in a direct liquid fuel cell. According to the fluid flow direction, the fluid flow channel of the liquid fluid mixer includes a fluid premixing area, a forced mixed flow area and a mixed fluid convergence area in sequence. ; The first liquid fluid inlet and the second liquid fluid inlet are provided on the left side of the fluid premixing area; the fluid premixing area is provided with a blocking member that facilitates the mixing of the first liquid fluid and the second liquid fluid; the forced mixed flow The cross-sectional area of ​​the flow channel in the zone is smaller than the cross-sectional area of ​​the flow channel in the fluid premixing zone, and the forced mixed flow zone is provided with a fluid disturbance component that is conducive to the thorough mixing of the mixed first liquid fluid and the second liquid fluid; the flow channel in the mixed fluid convergence zone The cross-sectional area is larger than the flow channel cross-sectional area of ​​the forced mixed flow area, and a mixed fluid outlet is provided on the right side of the mixed fluid converging area away from the forced mixed flow area.

Description

technical field [0001] The invention belongs to the field of fluid technology, and in particular relates to a liquid fluid mixed flow component applied to a direct liquid fuel cell. Background technique [0002] At present, the proton exchange membrane fuel cell has become a new energy research hotspot due to its high energy conversion efficiency, no pollution, low noise and many other advantages. Among them, low-power proton exchange membrane fuel cells have a considerable market prospect because of their portable power sources that can charge mobile appliances such as notebooks and mobile phones. [0003] Reducing the size is always the goal of the optimization of the portable proton exchange membrane fuel cell system. In addition to the effective use of space, the miniaturization of the internal components of the system is the fundamental solution to the "slimming" of the portable fuel cell. At present, the mixing of the buffer fuel of the portable proton exchange membra...

AI Technical Summary

Problems solved by technology

At present, the mixing of the buffer fuel of the portable proton exchange membrane fuel cell is carried out in a chamber with a relatively large volume of the system. In this chamber, pure methanol fuel is added, and the concentration of the methanol solution increases slowly, which exposes the slow response speed of fuel supply and the operation of the system. Instability issues; reducing the space of the buffer solution chamber tends to lead to non-uniform methanol concentration, which limits the possibility of further volume reduction of the buffer solution chamber as well as portable fuel cell systems

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