TWM562892U - Gas detecting module - Google Patents

Abstract

A gas detecting module comprises: a carrier board having a substrate, a sensor packaged on the substrate, a vent hole on the substrate; a compartment body, the first compartment and the second compartment being separated by the spacer, the first compartment has The opening, the second compartment has an air outlet, and the bottom of the compartment is provided with a receiving groove for providing the carrier plate to be inserted and inserted, the vent corresponding to the air outlet, the sensor penetrating into the first compartment, and the gap above the spacer has a gap for The first compartment and the second compartment are connected; and the actuator is disposed in the second compartment to close the bottom of the second compartment and generate a guiding airflow; the gas detecting module is assembled with the thin portable device The casing encloses the gas detecting module, and the casing is provided with an air inlet corresponding to the first compartment, and the external air of the thin portable device is introduced into the first compartment, and the gas flowing through the sensor is monitored by the sensor.

Description

Gas detection module

The present invention relates to a gas detection module, and more particularly to a gas detection module that is combined with a thin portable device for gas monitoring.

Modern people are paying more and more attention to the gas quality around them, such as carbon monoxide, carbon dioxide, volatile organic compounds (VOC), PM2.5, nitrogen monoxide, sulfur monoxide, etc., these gases in the environment. Exposure can affect human health, and even endanger life. Therefore, the quality of environmental gases has attracted the attention of all countries, and it is an issue that needs urgent attention.

How to confirm the quality of gas, it is feasible to use a gas sensor to monitor the surrounding environment. If it can provide monitoring information immediately, it can alert people in the environment to prevent or escape immediately, and avoid being exposed to the environment. Gas exposure causes human health effects and injuries, and the use of gas sensors to monitor the surrounding environment is a very good application.

Portable devices are mobile devices that modern people will carry out. Therefore, the integration of gas detection modules in portable devices is highly valued. In particular, the current development trend of portable devices is light and thin. In the case of high performance, how to make the gas detection module thin and set in the portable device, while avoiding the main components such as the processor inside the portable device when detecting gas Interference is an important issue at the moment.

The main purpose of this case is to provide a gas detection module that can be combined with a thin portable device for gas monitoring.

A generalized embodiment of the present invention is a gas detecting module comprising: a carrier plate having a substrate, the substrate is packaged and positioned with a sensor, the sensor is electrically connected to the substrate, and a vent is disposed on the substrate a compartment having a first compartment and a second compartment formed by a partition, wherein the first compartment has an opening, and the second compartment has an air outlet, and the compartment The bottom portion is provided with a receiving groove for positioning the carrier plate, and the bottom portion of the partition body is closed, and the vent opening of the substrate corresponds to the air outlet, and the sensor penetrates the opening on the substrate Projecting into the first compartment, and having a gap above the spacer for gas communication between the first compartment and the second compartment; and an actuator disposed in the second compartment Separating from the sensor disposed in the first compartment, so that the heat source generated by the actuator does not affect the monitoring of the sensor, and the actuator closes the bottom of the second compartment and controls actuation to generate a guide Airflow, by the second compartment The vent is discharged through the vent of the substrate and is discharged outside the compartment; thereby forming the gas detecting module in a thin portable device, and the casing of the thin portable device closes the gas detector Measuring module, and the housing is provided with an air inlet corresponding to the first compartment of the compartment body, and external air of the thin portable device is introduced into the first compartment, and the sensor convects too much The gas of the surface is monitored, and the monitored gas is guided by the actuator, the gap passing through the spacer enters the second compartment, is discharged from the air outlet, and is discharged to the vent through the substrate. A unidirectional gas delivery monitoring is formed outside the compartment.

Some exemplary embodiments embodying the features and advantages of the present invention are described in detail in the following description. It is to be understood that the present invention is capable of various modifications in various embodiments, and is not intended to limit the scope of the invention.

The present invention provides a gas detecting module. Please refer to FIG. 1A to FIG. 1C at the same time. The gas detecting module comprises a carrier board 1, a compartment body 2, an actuator 3 and a sensor 4; the carrier board 1 has a substrate 11 and a vent 12 is disposed on the substrate 11. The compartment 2 is separated from the first compartment 22 and the second compartment 23 by a spacer 21, wherein the first compartment 22 has an opening 221. In this embodiment, the opening 221 is located at the bottom of the first compartment 22, but not limited thereto, and the second compartment 23 has an air outlet 231, and the air outlet 231 is located in the second compartment. The bottom of the 23, but not limited thereto, and the spacer 21 blocking the first compartment 22 and the second compartment 23 has a notch 211, so that the first compartment 22 and the second compartment 23 can pass each other via the notch 211 Connected. In addition, the bottom of the cavity 2 is further provided with a receiving groove 24 for positioning the carrier 1 to be inserted therein to close the bottom of the cavity 2, and the vent 12 on the substrate 11 will be Corresponding to the air outlet 231 of the second compartment 23.

The sensor 4 is disposed on the substrate 11 and electrically connected. When the carrier 1 is received in the receiving slot 24, the sensor 4 on the substrate 11 passes through the opening 221 and protrudes into the first compartment. 22, for detecting the gas in the first compartment 22.

The actuator 3 described above is disposed in the second compartment 23 and is isolated from the sensor 4 disposed in the first compartment 22, so that the heat source generated when the actuator 3 is actuated can be blocked by the spacer 21, The detection result of the sensor is affected, and the actuator 3 closes the bottom of the second compartment 23, and controls the actuation to generate a guiding airflow, which is then discharged by the air outlet 231 of the second compartment 23, and is ventilated through the substrate 11. The port 12 discharges the gas outside the compartment 2.

Referring to FIG. 2 to FIG. 3C, the gas detecting module can be assembled in a thin portable device 5, and the thin portable device 5 includes a casing 51. The casing 51 is provided with an air inlet. The port 511 corresponds to the first compartment 22 of the compartment 2 when the gas detecting module is embedded in the thin portable device 5. In addition, please continue to review FIG. 2 and FIG. 3A. The air inlet 511 of the housing 51 does not directly correspond to the sensor 4 located in the first compartment 22, that is, the air inlet 511 is not directly located in the sensor 4. Above, the two are misplaced.

Continuing with the review of FIGS. 3B and 3C, the operation of the actuator 3 causes the negative pressure to begin to be formed in the second compartment 23, and the external air outside the thin portable device 5 is extracted and introduced into the first compartment 22 The sensor 4 in the first compartment 22 starts to monitor the gas flowing over its surface to detect the air quality outside the thin portable device 5, and the gas is monitored when the actuator is continuously operated. The second compartment 23 is introduced through the notch 211 on the spacer 21, and finally discharged from the air outlet 231 and the vent 12 of the substrate 11 outside the compartment 2 to form a one-way gas conduction monitoring (such as an arrow). Direction shown).

The sensor 4 may be a gas sensor comprising a group of an oxygen sensor, a carbon monoxide sensor, a carbon dioxide sensor, a temperature sensor, an ozone sensor, and a volatile organic sensor, or a combination thereof; or The gas sensor described above may be a gas sensor that monitors a group of at least one of bacteria, viruses, and microorganisms, or any combination thereof.

To understand the characteristics of the above gas detection module, the following describes the structure and operation of the actuator 3:

Referring to FIGS. 4A-5A, the actuator 3 is a gas pump, and includes an air inlet plate 31, a resonant plate 32, a piezoelectric actuator 33, and an insulating sheet stacked in sequence. 34, a conductive sheet 35; the air inlet plate 31 has at least one air inlet hole 31a, at least one bus bar hole 31b and a confluence chamber 31c, the above-mentioned air inlet hole 31a and the bus bar hole 31b are the same number, in this embodiment In the example, the intake hole 31a and the bus bar hole 31b are exemplified by the number of four, and are not limited thereto; the four air inlet holes 31a respectively penetrate the four bus bar holes 31b, and the four bus bar holes 31b merge. To the confluence chamber 31c.

The resonator plate 32 is assembled to the air inlet plate 31 through a bonding manner. The resonator plate 32 has a hollow hole 32a, a movable portion 32b and a fixing portion 32c. The hollow hole 32a is located at the center of the resonance plate 32. And corresponding to the confluence chamber 31c of the air intake plate 31, and a region provided around the hollow hole 32a and opposed to the confluence chamber 31c is a movable portion 32b, and is provided on the outer peripheral portion of the resonance plate 32 to be attached. The air intake plate 31 is a fixing portion 32c.

The piezoelectric actuator 33 includes a suspension plate 33a, an outer frame 33b, at least one connecting portion 33c, a piezoelectric element 33d, at least one gap 33e and a convex portion 33f. wherein the suspension plate 33a is a square The suspension plate has a first surface 331a and a second surface 332a opposite to the first surface 331a. The outer frame 33b is disposed around the circumference of the suspension plate 33a, and the outer frame 33b has a pair of matching surfaces 331b and a lower surface 332b. It is connected between the suspension plate 33a and the outer frame 33b through at least one connecting portion 33c to provide a supporting force for elastically supporting the suspension plate 33a, wherein the gap 33e is a gap between the suspension plate 33a, the outer frame 33b and the connecting portion 33c. Used for air to pass.

In addition, the first surface 331a of the suspension plate 33a has a convex portion 33f. In the present embodiment, the convex portion 33f passes through the etching process of the peripheral edge of the convex portion 33f and adjacent to the connection portion 33c to be recessed. The convex portion 33f of the suspension plate 33a is higher than the first surface 331a to form a stepped structure.

Further, as shown in FIG. 5A, the suspension plate 33a of the present embodiment is formed by press forming to be recessed downward, and the depression distance thereof can be adjusted by forming at least one connecting portion 33c between the suspension plate 33a and the outer frame 33b. Both the convex surface 331f of the convex portion 33f on the suspension plate 33a and the combined surface 331b of the outer frame 33b form a non-coplanar, that is, the convex surface 331f of the convex portion 33f will be lower than the combined surface 331b of the outer frame 33b. And the second surface 332a of the suspension plate 33a is lower than the lower surface 332b of the outer frame 33b, and the piezoelectric element 33d is attached to the second surface 332a of the suspension plate 33a, disposed opposite to the convex portion 33f, and the piezoelectric element 33d is applied After the driving voltage is deformed by the piezoelectric effect, the suspension plate 33a is caused to bend and vibrate; a small amount of adhesive is applied to the assembly surface 331b of the outer frame 33b, and the piezoelectric actuator 33 is bonded to the piezoelectric actuator 33 by heat pressing. The fixing portion 32c of the resonance plate 32, in turn, allows the piezoelectric actuator 33 to be combined with the resonance plate 32.

In addition, the insulating sheet 34 and the conductive sheet 35 are all thin frame-shaped sheets, which are sequentially stacked under the piezoelectric actuator 33. In the present embodiment, the insulating sheet 34 is attached to the lower surface 332b of the outer frame 33b of the piezoelectric actuator 33.

Referring to FIG. 5A, the air intake plate 31, the resonance plate 32, the piezoelectric actuator 33, the insulating sheet 34, and the conductive sheet 35 of the actuator 3 are sequentially stacked and combined, wherein the first surface 331a of the suspension plate 33a is suspended. Forming a chamber spacing g with the resonator plate 32, the chamber spacing g will affect the transmission effect of the actuator 3, so maintaining a fixed chamber spacing g is important for providing stable transmission efficiency to the actuator 3. . The actuator 3 of the present invention uses a punching method for the suspension plate 33a to be recessed downward so that both the first surface 331a of the suspension plate 33a and the assembly surface 331b of the outer frame 33b are non-coplanar, that is, the suspension plate. The first surface 331a of the 33a will be lower than the assembly surface 331b of the outer frame 33b, and the second surface 332a of the suspension plate 33a is lower than the lower surface 332b of the outer frame 33b, so that the suspension plate 33a of the piezoelectric actuator 33 is recessed. A space is formed with the resonator plate 32 to form an adjustable chamber spacing g, which is directly improved by adopting a structure in which the suspension plate 33a of the piezoelectric actuator 33 is formed into a recessed space to form a chamber space 36. The required chamber spacing g can be achieved by adjusting the recessed distance of the suspension plate 33a of the piezoelectric actuator 33, which effectively simplifies the structural design of the adjustment chamber spacing g, and also achieves the advantages of simplifying the process and shortening the process time.

5B to 5D are diagrams showing the operation of the actuator 3 shown in FIG. 5A. Referring to FIG. 5B, the piezoelectric element 33d of the piezoelectric actuator 33 is subjected to a driving voltage to generate a deformation-driven suspension plate. 33a is displaced downward, at which time the volume of the chamber space 36 is increased, and a negative pressure is formed in the chamber space 36, so that the air in the confluence chamber 31c is taken into the chamber space 36, and the resonator 32 is subjected to the resonance principle. The influence is synchronously displaced downward, which increases the volume of the confluence chamber 31c, and due to the relationship of the air in the confluence chamber 31c entering the chamber space 36, the confluence chamber 31c is also in a negative pressure state, and then passes through the busbar. The hole 31b and the air inlet 31a suck air into the confluence chamber 31c; referring to FIG. 5C, the piezoelectric element 33d drives the suspension plate 33a upward to compress the chamber space 36, forcing the air in the chamber space 36 to pass. The gap 33e is transmitted downward to achieve the effect of transmitting air. At the same time, the resonance plate 32 is also displaced upward by the suspension plate 33a due to resonance, and the air in the confluence chamber 31c is synchronously pushed to move into the chamber space 36; Figure 5D, when hanging When the plate 33a is driven downward, the resonance plate 32 is also simultaneously driven to be displaced downward. At this time, the resonance plate 32 moves the air in the compression chamber space 36 toward the gap 33e, and raises the volume in the confluence chamber 31c. The air can be continuously collected in the confluence chamber 31c through the air inlet 31a and the bus hole 31b, and the above steps are continuously repeated, so that the actuator 3 can continuously enter the air from the air inlet 31a, and then The gap 33e is transmitted downward to continuously capture the air outside the gas detecting module, and the air is supplied to the sensor 4 for sensing, thereby improving the sensing efficiency.

Continuing to refer to FIG. 5A, another embodiment of the actuator 3 can electrically actuate the actuator 3 into a MEMS gas pump in a microelectromechanical manner, wherein the air inlet plate 31, the resonant plate 32, and the piezoelectric body The actuator 33, the insulating sheet 34, and the conductive sheet 35 can be made through a surface micromachining technique to reduce the volume of the actuator 3.

Referring to FIG. 1 , the substrate 11 can be a circuit board and has a connector 6 . The connector 6 is provided with a circuit board (not shown) extending through the connection to provide electrical connection of the substrate 11 . And signal connection.

In summary, the gas detection module provided in the present invention utilizes the suspension plate of the actuator to make the actuator quickly and stably introduce the gas into the gas detection module, thereby improving the sensing efficiency. The actuator and the sensor are separated from each other through the first compartment and the second compartment, thereby avoiding interference when the sensor is detected, and also blocking the influence of the actuator, and further, when the gas detecting module is actually introduced into the thin type When the gas monitoring is carried out in the portable device, it can be not affected by the processor or other components in the thin portable device, and the gas detecting module can be truly introduced into the thin portable device to be detected at any time and anywhere. purpose.

This case has been modified by people who are familiar with the technology, but it is not intended to be protected by the scope of the patent application.

1‧‧‧ Carrier Board
11‧‧‧Substrate
12‧‧‧ vent
2‧‧‧ Compartment
21‧‧‧ spacer
211‧‧ ‧ gap
22‧‧‧First compartment
221‧‧‧ openings
23‧‧‧Second compartment
231‧‧‧ air outlet
24‧‧‧ accommodating slots
3‧‧‧Actuator
31‧‧‧Air intake plate
31a‧‧‧Air intake
31b‧‧‧ bus bar hole
31c‧‧‧ confluence chamber
32‧‧‧Resonance board
32a‧‧‧ hollow hole
32b‧‧‧movable department
32c‧‧‧ fixed department
33‧‧‧ Piezoelectric Actuator
33a‧‧‧suspension plate
331a‧‧‧ first surface
332a‧‧‧ second surface
33b‧‧‧ frame
331b‧‧‧ matching surface
332b‧‧‧ lower surface
33c‧‧‧Connecting Department
33d‧‧‧Piezoelectric components
33e‧‧‧ gap
33f‧‧‧ convex
331f‧‧‧ convex surface
34‧‧‧Insulation sheet
35‧‧‧Conductor
36‧‧‧Case space
4‧‧‧ sensor
5‧‧‧Thin portable device
51‧‧‧Shell
511‧‧‧air inlet
6‧‧‧Connector
G‧‧‧ Chamber spacing

FIG. 1A is a perspective view of the gas detecting module of the present invention. FIG. 1B is another perspective view of the gas detecting module of the present invention. Figure 1C is an exploded view of the gas detection module of the present invention. Fig. 2 is a schematic view showing the gas guiding direction of the gas detecting module of the present invention applied to a thin portable device. Figure 3A is a schematic view of the air inlet of the thin portable device of Figure 2. Fig. 3B is a schematic cross-sectional view taken along line A-A of Fig. 3A. Fig. 3C is a schematic cross-sectional view taken along line B-B of Fig. 3A. FIG. 4A is an exploded perspective view of the actuator of the gas detecting module of the present invention. FIG. 4B is an exploded perspective view of the actuator of the gas detecting module of the present invention at another angle. FIG. 5A is a schematic cross-sectional view of the actuator of the gas detecting module of the present invention. 5B to 5D are schematic diagrams of actuator actuation of the gas detection module of the present invention.

Claims (12)

A gas detecting module comprises: a carrier plate having a substrate, the substrate is packaged and positioned with a sensor, the sensor is electrically connected to the substrate, and the substrate is provided with a vent; the compartment is provided by a The partition forms a first compartment and a second compartment, wherein the first compartment has an opening, and the second compartment has an air outlet, and the bottom of the compartment is provided with a receiving slot. The carrier plate is positioned therein to close the bottom of the compartment body, and the vent opening of the substrate corresponds to the air outlet, and the sensor extends through the opening and protrudes into the first compartment And a gap is formed above the spacer for the first compartment and the second compartment to communicate with each other; and an actuator is disposed in the second compartment, and is disposed on the first compartment The sensor of the chamber is isolated such that the heat source generated by the actuator does not affect the monitoring of the sensor, and the actuator closes the bottom of the second compartment and controls actuation to generate a flow of air by the second compartment The gas outlet is discharged and passed through the substrate The venting port is disposed outside the compartment; the gas detecting module is assembled in a thin portable device, and the casing of the thin portable device closes the gas detecting module, and the casing An air inlet is disposed on the first compartment corresponding to the compartment body, and external air of the thin portable device is introduced into the first compartment, and the sensor convects the gas flowing over the surface thereof, and monitors The gas is guided by the actuator, the gap enters the second compartment through the gap, is discharged from the air outlet, and is discharged to the outside of the compartment through the vent of the substrate to form a one-way Gas guidance monitoring. The gas detecting module of claim 1, wherein the inlet port of the housing of the thin portable device is disposed not to directly correspond to the sensor in the first compartment. The gas detecting module of claim 1, wherein the sensor is a gas sensor. The gas detecting module of claim 3, wherein the gas sensor comprises at least one of an oxygen sensor, a carbon monoxide sensor, and a carbon dioxide sensor, or any combination thereof. Group. The gas detecting module of claim 3, wherein the gas sensor comprises a volatile organic sensor. The gas detecting module of claim 3, wherein the gas sensor comprises a sensor that monitors at least one of bacteria, viruses, and microorganisms or any combination thereof. The gas detecting module of claim 1, wherein the actuator is a MEMS gas pump. The gas detecting module of claim 1, wherein the actuator is a gas pump, comprising: an air inlet plate having at least one air inlet hole, at least one bus bar hole and a confluence a chamber, wherein the at least one air inlet hole is configured to introduce a gas flow, the bus bar hole corresponding to the air inlet hole, and the air flow guiding the air inlet hole is merged into the convergence flow chamber; a resonance piece having a hollow hole corresponding to the flow a chamber, and the periphery of the hollow hole is a movable portion; and a piezoelectric actuator disposed corresponding to the resonance piece; wherein the resonance piece and the piezoelectric actuator have a gap to form a cavity a chamber space for driving the piezoelectric actuator to be introduced from the at least one air inlet hole of the air intake plate, collecting the flow through the at least one bus bar hole, and flowing through the resonance The hollow hole of the sheet generates a resonant transmission airflow by the piezoelectric actuator and the movable portion of the resonance piece. The gas detecting module of claim 8, wherein the piezoelectric actuator comprises: a suspension plate having a first surface and a second surface, the first surface having a convex portion; The outer frame is disposed on the outer side of the suspension plate and has a set of matching surfaces; at least one connecting portion is connected between the suspension plate and the outer frame to provide elastic support for the suspension plate; and a piezoelectric element, Attached to the second surface of the suspension plate for applying a voltage to drive the suspension plate to bend vibration; wherein the at least one connecting portion is formed between the suspension plate and the outer frame, and the suspension plate is The first surface and the assembled surface of the outer frame are formed in a non-coplanar structure, and the first surface of the suspension plate is maintained at a chamber spacing from the resonant plate. The gas detecting module of claim 9, wherein the suspension plate is a square suspension plate and has a convex portion. The gas detecting module of claim 8, wherein the gas pump comprises a conductive sheet and an insulating sheet, wherein the air inlet plate, the resonant plate, the piezoelectric actuator, and the conductive sheet The insulating sheet is stacked and arranged in sequence. The gas detecting module of claim 1, wherein the substrate is a circuit board having a connector for a circuit board to penetrate and connect to provide electrical connection and signal connection.