A two-stage fluidic device

CN116123153BActive Publication Date: 2026-07-03JIANGSU UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGSU UNIV
Filing Date
2023-02-13
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing jet injectors have limited operating range in the low-power region and cannot adapt to all operating conditions of fuel cells, especially exhibiting weak adaptability in the low-power region.

Method used

Design a two-stage jet injector, comprising a first jet channel and a second jet channel. The position and magnetic field of the nozzle are controlled by an electromagnetic winding. Different jet channels are selected to adapt to changes in the output power of the fuel cell. The flow rate and pressure regulation are optimized by combining the taper design of the nozzle.

Benefits of technology

It achieves improved adaptability in the low-power region, enabling the selection of appropriate jet channels based on the fuel cell output power, improving hydrogen supply efficiency and flow rate, expanding the operating range, reducing flow rate interference, and enhancing adaptability.

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    Figure CN116123153B_ABST
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Abstract

The application provides a double-stage fluidic device, which comprises a cavity, a valve seat and a nozzle, one end of the cavity is an outlet, the other end of the cavity is provided with a first gas inlet, a mixing cavity in communication with the first gas inlet is arranged in the cavity, the nozzle is arranged in the mixing cavity, the valve seat is arranged at the inlet of the nozzle, two independent fluidic channels are arranged in the nozzle, the valve seat is in communication with a second gas inlet, and the second gas inlet is in communication with the first fluidic channel or the two fluidic channels by the action of a valve core of the valve seat. The first fluidic channel and the second fluidic channel are arranged, different fluidic channels can be selected according to the size of the output power of the fuel cell, and the application can be suitable for a low-power area.
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