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Sensitively heated liquid evaporation type micro-thruster and preparation method thereof

A liquid evaporation and induction heating technology, applied in steam generation methods, lighting and heating equipment, steam generation and other directions, can solve the problems of small thrust and slow response speed, and achieve the improvement of heating capacity, heating area and reduction of manufacturing difficulty. Effect

Active Publication Date: 2018-11-02
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the traditional resistance wire heating type liquid evaporation micro-propeller such as small thrust and slow response speed, and propose to apply induction heating to the liquid evaporation micro-propeller, simplifying the structure and manufacturing process of the micro-propeller

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  • Sensitively heated liquid evaporation type micro-thruster and preparation method thereof
  • Sensitively heated liquid evaporation type micro-thruster and preparation method thereof
  • Sensitively heated liquid evaporation type micro-thruster and preparation method thereof

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Embodiment Construction

[0042] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0043] The present invention adopts following technical scheme:

[0044] Induction heating liquid evaporation micro-propeller, including cavity layer 6, upper cover sheet 5, base 10, metal heating plate 9, upper PCB board 1, lower PCB board 12, excitation coil I2 and excitation coil II11; The structure fabricated on the bulk layer 6 includes a micro-channel 14 , a constriction port 13 , a heating evaporation chamber 8 and a Laval nozzle 7 .

[0045] The micro-channel 14 has the same depth as the Laval nozzle 7, which is 150 μm-300 μm, and the width is 80 μm-300 μm;

[0046] The upper cover sheet 5, cavity layer 6 and substrate 10 are zirconia ceramic blocks;

[0047]The circular liquid inlet 15 is processed on the...

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Abstract

The invention provides a sensitively heated liquid evaporation type micro-thruster and a preparation method thereof and belongs to the field of aviation, spaceflight, micro-propulsion technologies andmicromechanics. The micro-thruster comprises a cavity layer, an upper cover piece, a substrate, a metal heating plate, an upper PCB, a lower PCB, a magnet exciting coil I and a magnet exciting coil II, wherein the structures manufactured on the cavity layer include a micro-channel, a shrinkage opening, a heating evaporation cavity and a laval spray port. Specifically, electromagnetic induction heating liquid is utilized and is vaporized in a heating cavity, the pressure in the cavity is increased, high-pressure gas is sprayed out of a micro-spraying orifice to produce a thrust, and thus the micro-thruster obtains a driving force in the opposite direction. The micro-thruster plays the very important effect on position keeping, gesture control, gravitation compensation, track adjustment andthe like of a microsatellite.

Description

technical field [0001] The invention is an induction heating liquid evaporation type micro-propeller, specifically a kind of using electromagnetic induction to heat the liquid, so that the liquid is vaporized in the heating chamber, the pressure in the chamber is increased, and the high-pressure gas is ejected from the micro-nozzle at high speed to generate thrust , so that the micro-propeller can obtain the driving force in the opposite direction. Micro-thrusters play an extremely important role in the realization of micro-satellites' position maintenance, attitude control, gravitational compensation, orbit adjustment, etc., and belong to the fields of aviation, aerospace, micro-propulsion technology and micro-mechanics. Background technique [0002] At present, the heating method of liquid evaporation micro-propulsion is mainly resistance heating. In 2000, the MEMS liquid evaporation micro-propulsion researched by the University of California in the United States used res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64G1/40B64G1/26B64G1/24F22B1/28
CPCF22B1/281B64G1/242B64G1/26B64G1/40B64G1/245
Inventor 刘本东李心蕊杨旭郭宇贤光杨佳慧
Owner BEIJING UNIV OF TECH
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