Patent ID: 11898554
Assignee: MICROJET TECHNOLOGY CO., LTD.
Field: Chemical engineering (Chemistry)
Classification: CPC F  B | IPC B  F

Claim 7:
8. The filtration and purification processing method according to claim 1, wherein the at least one flow-guiding unit is a microelectromechanical systems (MEMS) pump, wherein the MEMS pump comprises:
an inlet base formed with at least one inlet hole by a silicon substrate etching process;
a third oxide layer formed and stacked on the inlet base by deposition, wherein the third oxide layer is formed with a plurality of convergence channels and a convergence room by etching, and wherein the convergence channels are in communication between the at least one inlet holes of the inlet base and the convergence room;
a resonance layer formed and stacked on the third oxide layer through a silicon substrate deposition process having a through hole, a vibration area, and a fixed area formed by etching, wherein the through hole is formed at a center portion of the resonance layer, the vibration area is formed on a periphery of the through hole, and the fixed area is formed on a periphery of the resonance layer;
a fourth oxide layer formed and stacked on the resonance layer by deposition, wherein the fourth oxide layer is formed with a compression chamber area by etching;
a vibration layer formed and stacked on the fourth oxide layer by a silicon substrate deposition process having an actuation area, an outer peripheral area, and a plurality of ventilation holes formed by etching, wherein the actuation area is formed at a center portion of the vibration layer, the outer peripheral area is formed around a periphery of the actuation area, the ventilation holes are respectively formed between the actuation area and the outer peripheral area, and a compression chamber is defined between the vibration layer and the compression chamber area of the fourth oxide layer; and
a second piezoelectric component formed and stacked on the actuation area of the vibration layer by deposition having a second lower electrode layer, a second piezoelectric layer, a second insulation layer, and a second upper electrode layer, wherein the second lower electrode layer is formed and stacked on the actuation area of the vibration layer by deposition, the second piezoelectric layer is formed and stacked on a portion of a surface of the second lower electrode layer by deposition, the second insulation layer is formed and stacked on a portion of a surface of the second piezoelectric layer by deposition, and wherein the second upper electrode layer is formed and stacked on the surface of the second insulation layer and the remaining portion of the surface of the second piezoelectric layer which is not covered by the second insulation layer for being electrically connected to the second piezoelectric layer; and
wherein the second piezoelectric component is capable of driving the vibration layer and the resonance layer to resonate with the second piezoelectric component, the gas outside the second actuator is then drawn into the second actuator through the at least one inlet hole, passes through the convergence channels, and then converges at the convergence room; and the gas further passes through the through hole of the resonance layer, and then is discharged out from the plurality of ventilation holes of the vibration layer, thereby achieving transmission of the gas.