Patent ID: 11885727
Assignee: MICROJET TECHNOLOGY CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 11:
12. The home device capable of gas detection according to claim 1, wherein the at least one sensor of the gas detection module comprises a particulate sensor, and the gas detection module further comprises:
the base comprising:
the first surface;
the second surface opposite to the first surface;
a laser loading region hollowed out from the first surface to the second surface;
the 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 lateral wall and is in communication with the laser loading region;
the 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-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;

the driving circuit board covering the second surface of the base;
and the laser component is 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;
the 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 piezoelectric actuator accommodated in the gas-guiding-component loading region, wherein the particulate sensor is positioned and disposed on the driving circuit board, electrically connected to the driving circuit board, and is disposed in the gas-inlet groove at an position orthogonal to the light beam path of the laser component, so as to detect suspended particles passing through the gas-inlet groove and irradiated by a projecting light beam emitted from the laser component, 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, thereby the gas is inhaled from the environment outside the base, transported into the inlet path through the inlet opening, passed through the particulate sensor to detect the concentration of the suspended particles contained in the gas, transported out of the outlet path through the ventilation hole, and then discharged through the outlet opening by the piezoelectric actuator.