Patent ID: 11879665
Assignee: MICROJET TECHNOLOGY CO., LTD.
Field: Chemical engineering (Chemistry)
Classification: CPC B  F | IPC F

Claim 17:
18. The gas exchange device according to claim 1, wherein the gas detection main body comprises:
a base comprising:
a first surface;
a second surface opposite to the first surface;
a laser loading region hollowed out from the first surface to the second surface;
a gas-inlet groove concavely formed from the second surface and disposed adjacent to the laser loading region, wherein the gas-inlet groove comprises a gas-inlet and a transparent window opened on two lateral walls thereof and in communication with the laser loading region;
a gas-guiding-component loading region concavely formed from the second surface and in communication with the gas-inlet groove, and having a ventilation hole penetrated a bottom surface thereof; and
a gas-outlet groove concavely formed from a region of the first surface spatially corresponding to the bottom surface of the gas-guiding-component loading region and hollowed out from the first surface to the second surface in a region where the first surface is misaligned with the gas-guiding-component loading region, wherein the gas-outlet groove is in communication with the ventilation hole and comprises a gas-outlet mounted thereon;

a piezoelectric actuator accommodated in the gas-guiding-component loading region;
a driving circuit board covering and attaching to the second surface of the base;
a laser component positioned and disposed on the driving circuit board and electrically connected to the driving circuit board, and accommodated in the laser loading region, wherein a light beam path emitted by the laser component passes through the transparent window and extends in an orthogonal direction perpendicular to the gas-inlet groove;
a sensor positioned and disposed on the driving circuit board and electrically connected to the driving circuit board, and accommodated in the gas-inlet groove at a region in an orthogonal direction perpendicular to the light beam path emitted by the laser component, for detecting suspended particles in the gas passing through the gas-inlet groove and irradiated by a light beam emitted by the laser component; and
an outer cover covering the first surface of the base and comprising a lateral plate, wherein the lateral plate comprises an inlet opening and an outlet opening at positions spatially corresponding to respectively the gas-inlet and the gas-outlet of the base, wherein the inlet opening is spatially corresponding to the gas-inlet of the base and the outlet opening is spatially corresponding to the gas-outlet of the base,
wherein the first surface of the base is covered by the outer cover, and the second surface of the base is covered by the driving circuit board, so as to define an inlet path by the gas-inlet groove and define an outlet path by the gas-outlet groove, thereby the piezoelectric actuator introduces the gas outside the gas-inlet of the base into the inlet path defined by the gas-inlet groove through the inlet opening, and the sensor detects a concentration of the suspended particles contained in the gas, and further the gas is guided by the piezoelectric actuator to enter the outlet path defined by the gas-outlet groove through the ventilation hole and discharged through the gas-outlet of the base and the outlet opening.