公开(公告)号：KR1020030070333A

公开(公告)日：2003-08-30

申请号：KR1020020009832

申请日：2002-02-25

Applicant: 한국과학기술연구원

Inventor： 이윤표 ,  김호영 ,  김광호 ,  김영일 ,  이대영 ,  김서영 ,  김경호

IPC: B81B7/00

CPC classification number: H02N2/18

Abstract: PURPOSE: A generator for a MEMS by using bubbles is provided to be used as power source for the bio-MEMS by generating with using low-temperature heat source without replacing the power source periodically. CONSTITUTION: A generator for a MEMS is composed of a liquid chamber having a lower wall and a side wall and storing liquid; a bubble generating unit generating bubbles in the liquid chamber; an elastic piezoelectric plate(20) placed near the upper part of the bubble generating unit in the liquid chamber, displaced according to contact of bubbles, and composed of a first free end, a second end and a piezoelectric material layer; and a couple of electrodes(22,23) electrically connected to the piezoelectric material layer.

Abstract translation: 目的：通过使用气泡产生MEMS用于生物MEMS的电源，通过使用低温热源生成而不用周期性地更换电源。 构成：用于MEMS的发生器由具有下壁和侧壁并储存液体的液体室组成; 气泡生成单元，其在所述液体室中产生气泡; 弹性压电板（20），其位于所述液体室内的所述气泡发生单元的上部附近，根据气泡的接触位移，并由第一自由端，第二端和压电材料层构成; 和电连接到压电材料层的一对电极（22,23）。

公开(公告)号：KR100255834B1

公开(公告)日：2000-05-01

申请号：KR1019970057006

申请日：1997-10-31

Applicant: 한국과학기술연구원

Inventor： 이윤표 ,  이춘식 ,  김영일 ,  한희석 ,  김광호 ,  정종수 ,  신흥태

IPC: F25C1/00

CPC classification number: F25C1/16

Abstract: PURPOSE: An apparatus and method for producing spherical ice particle is provided to reduce environmental contamination by using only water as a refrigerant, while allowing spherical ice particles to be promptly produced. CONSTITUTION: An apparatus comprises a water supply pump(48) connected to a water supply source and which supplies water to a vacuum chamber(74); the vacuum chamber having a water injection nozzle(80) connected to the water supply pump; boosters(54,58) connected into the vacuum chamber so as to discharge vapor from the vacuum chamber and compress the discharged vapor, thus allowing interior of the vacuum chamber to be maintained at a pressure lower than a predetermined level; a condenser(60) connected to boosters so as to condense the vapor compressed by boosters; and a vacuum pump(68) connected to the condenser so as to discharge non-condensible gas from the condenser. A method comprises the steps of reducing pressure of the vacuum chamber into a level lower than the first pressure level; supplying water from the water supply source to the vacuum chamber; producing spherical ice by spraying water from the water injection nozzle into the vacuum chamber; maintaining the pressure of the vacuum chamber into a level lower than a second pressure level by discharging vapor from the vacuum chamber and compressing the vapor in such a manner that the saturation temperature of the vapor is higher than the normal temperature; condensing the compressed vapor; and discharging the condensate water and non-condensible gas.

Abstract translation: 目的：提供一种用于制造球形冰颗粒的装置和方法，以通过仅使用水作为制冷剂来减少环境污染，同时允许立即产生球形冰颗粒。 构成：装置包括连接到供水源并将水供应到真空室（74）的供水泵（48）。 所述真空室具有连接到所述供水泵的喷水嘴（80）; 增压器（54,58），其连接到真空室中，以便从真空室排出蒸气并压缩排出的蒸气，从而允许真空室的内部保持在低于预定水平的压力; 连接到增压器的冷凝器（60），以冷凝由助推器压缩的蒸气; 以及连接到冷凝器的真空泵（68），以从冷凝器排出不可冷凝的气体。 一种方法包括以下步骤：将真空室的压力降低到低于第一压力水平的水平; 从供水源向真空室供水; 通过将水喷射喷嘴喷射到真空室中来产生球形冰; 通过从真空室排出蒸气并以蒸气的饱和温度高于常温的方式压缩蒸汽，将真空室的压力维持在低于第二压力水平的水平; 冷凝压缩蒸气; 并排出冷凝水和不可冷凝气体。