Patent ID: 11944935
Assignee: MICROJET TECHNOLOGY CO., LTD.
Field: Chemical engineering (Chemistry)
Classification: CPC B  F  G | IPC A  B  F  G

Claim 11:
12. The gas detection purification device according to claim claim 1, wherein the gas detection main part 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 two lateral walls, the gas-inlet is in communication with an environment outside the base, and a transparent window is opened on the two lateral walls and is 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, wherein a ventilation hole penetrates a bottom surface of the gas-guiding-component loading region, and the gas-guiding-component loading region has four positioning protrusions disposed at four corners thereof; and
a gas-outlet groove concavely formed from 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 not aligned with the gas-guiding-component loading region, wherein the gas-outlet groove is in communication with the ventilation hole, and a gas-outlet is disposed in the gas-outlet groove and in communication with the environment outside the base;
a piezoelectric actuator accommodated in the gas-guiding-component loading region;
a driving circuit board covering and attached to the second surface of the base;
a laser component positioned and disposed on the driving circuit board, electrically connected to the driving circuit board, and accommodated in the laser loading region, wherein a light beam path emitted from the laser component passes through the transparent window and extends in a direction perpendicular to the gas-inlet groove, thereby forming an orthogonal direction with the gas-inlet groove;
a particulate sensor positioned and disposed on the driving circuit board, electrically connected to the driving circuit board, and disposed at an orthogonal position where the gas-inlet groove intersects the light beam path of the laser component in the orthogonal direction, so that suspended particles passing through the gas-inlet groove and irradiated by a projecting light beam emitted from the laser component are detected; and
an outer cover covering the first surface of the base and comprising a side plate, wherein the side plate has an inlet opening spatially corresponding to the gas-inlet and an outlet opening spatially corresponding to the gas-outlet, respectively,
wherein the first surface of the base is covered with the outer cover, and the second surface of the base is covered with the driving circuit board, so that an inlet path is defined by the gas-inlet groove, and an outlet path is defined by the gas-outlet groove, so that the gas is inhaled from the environment outside the base by the piezoelectric actuator, transported into the inlet path defined by the gas-inlet groove through the inlet opening, and passes through the particulate sensor to detect the concentration of the suspended particles contained in the gas, and the gas transported through the piezoelectric actuator is transported out of the outlet path defined by the gas-outlet groove through the ventilation hole and then discharged through the outlet opening.