CN110658113A - Gas monitoring device - Google Patents

Abstract

A gas monitoring device, comprising: a filter having two plug rings, each of which has a first filter screen; and at least one actuation sensor comprising: the monitoring chamber is provided with at least one air inlet, at least one filtering port and at least one air outlet, the air inlet is provided with a valve for controlling external air to be introduced into the monitoring chamber, and the filtering port is provided with a second filter screen which is made of the same material as the first filter screen; at least one gas sensor arranged in the monitoring chamber; at least one actuator arranged in the monitoring chamber and used for controlling the gas introduction; the particle monitoring module is arranged in the monitoring chamber and comprises a particle sensor; by opening and closing the valve, the gas information in the monitoring chamber is compared to judge whether to replace the first filter screen and the second filter screen.

Description

Gas monitoring device

Technical Field

The present disclosure relates to a gas monitoring device, and more particularly, to a gas monitoring device capable of being used with a filter.

Background

In recent years, the problem of air pollution in China and adjacent areas is getting worse, so that a lot of gases harmful to human bodies exist in the environment of daily life, and if the gases cannot be monitored immediately, the health of the human bodies can be affected.

Therefore, at present, a user plugs a filter with a filter screen into the nasal cavity, so that before the air enters the nasal cavity, the air is filtered by the filter screen of the filter and then is inhaled into the human body; however, although the user can utilize the filter screen of the filter to filter the gas entering the human body, the user cannot confirm when the filter screen of the filter needs to be replaced, and because the filter screen is arranged on the filter, the breathing effort of the user is weakened due to the filter screen, and the amount of the gas sucked is reduced, both of which are problems that need to be overcome at present.

Disclosure of Invention

The main purpose of present case is to provide a gas monitoring device for the air quality after the monitoring gas passes through the filter screen provides the instant and accurate gas information of user, in addition, also lets the user when stuffing the filter that has the filter screen in the nasal cavity, can learn the filter effect of filter screen, so that the user judges the opportunity of changing the filter screen, promotes safe handling reliability.

One broad aspect of the present disclosure is a gas monitoring device, comprising a filter having two rings, each ring having a first filter; and at least an actuation sensor comprising: the particle monitoring device comprises a body, at least one gas sensor, at least one actuator and at least one particle monitoring module. The body is provided with a monitoring chamber, and the monitoring chamber is provided with at least one air inlet, at least one filtering port and at least one air outlet. The gas inlet is provided with a valve for controlling the introduction of external gas into the monitoring chamber. The filtering port is provided with a second filter screen which is made of the same material as the first filter screen. The gas sensor is arranged in the monitoring chamber. The actuator is arranged in the monitoring chamber and used for controlling the gas introduction. The particle monitoring module is arranged in the monitoring chamber and comprises a particle sensor. The valve is opened and the actuator is simultaneously started, so that external air is introduced into the monitoring chamber from the air inlet, the air is monitored through the air sensor, and the particle size and the concentration of suspended particles contained in the air are monitored through the particle sensor of the particle monitoring module. And then closing the valve to lead the external air into the monitoring chamber from the filtering port, filtering the external air through the second filter screen, and monitoring the filtered external air through the gas sensor and the particle sensor so as to calculate the content of the filtered air in the monitoring chamber and the particle size and concentration of the suspended particles contained in the monitored chamber and judge the time for replacing the first filter screen and the second filter screen.

Drawings

Fig. 1 is a schematic structural diagram of a filter according to a first embodiment of the gas monitoring device.

Fig. 2 is a schematic cross-sectional view of an actuation sensor of a first embodiment of the gas monitoring device of the present disclosure.

Fig. 3 is a schematic perspective exploded view of an actuator according to a first embodiment of the present disclosure.

FIG. 4A is a cross-sectional view of an actuator according to a first embodiment of the present disclosure.

Fig. 4B to 4C are operation schematic diagrams of the actuator according to the first embodiment of the present disclosure.

Fig. 5A is a schematic cross-sectional view of a valve of the gas monitoring apparatus of the present disclosure.

Fig. 5B is a schematic operation diagram of a valve of the gas monitoring apparatus.

Fig. 6 is a schematic cross-sectional view of an actuation sensor of a second embodiment of the present gas monitoring device.

Fig. 7A is an exploded perspective view of an actuator according to a second embodiment of the present disclosure from a top view.

Fig. 7B is an exploded perspective view of the actuator according to the second embodiment of the present disclosure from a bottom perspective.

FIG. 8A is a cross-sectional view of an actuator according to a second embodiment of the present disclosure.

FIG. 8B is a cross-sectional view of an actuator according to another embodiment of the present disclosure.

Fig. 8C to 8E are operation diagrams of an actuator according to a second embodiment of the present disclosure.

Description of the reference numerals

A: filter

A1: plug ring

A2: first filter screen

B: actuation sensor

1: body

11: monitoring chamber

12: air inlet

13: filter the port

14: air outlet

15: valve with a valve body

151: holding member

152: sealing element

153: displacement member

151a, 152a, 153 a: through hole

16: second filter screen

2: gas sensor

3. 3': actuator

31: air injection hole sheet

31': air inlet plate

31 a: connecting piece

31 a': air intake

31 b: suspension plate

31 b': bus bar groove

31 c: hollow hole

31 c': confluence chamber

32: cavity frame

32': resonance sheet

32 a': hollow hole

32 b': movable part

32 c': fixing part

33: actuating body

33': piezoelectric actuator

33 a: piezoelectric carrier plate

33 a': suspension plate

33 b: tuning the resonator plate

33 b': outer frame

33 c: piezoelectric plate

33 c': support frame

33 d': piezoelectric element

33 e': gap

33 f': convex part

34: insulating frame

34': first insulating sheet

35: conductive frame

35': conductive sheet

351': conductive pin

352': electrode for electrochemical cell

36: resonance chamber

36': second insulating sheet

37: airflow chamber

37': chamber space

4: particle monitoring module

41: bearing partition plate

411: communication port

412: connector with a locking member

42: particle monitoring base

421: bearing groove

422: monitoring channel

423: light beam channel

424: accommodation chamber

43: laser transmitter

44: particle sensor

Detailed Description

Exemplary embodiments that embody features and advantages of this disclosure are described in detail below in the detailed description. It will be understood that the present disclosure is capable of various modifications without departing from the scope of the disclosure, and that the description and drawings are to be regarded as illustrative in nature, and not as restrictive.

A gas monitoring device is provided, please refer to fig. 1 and fig. 2. In a first embodiment of the present disclosure, a gas monitoring device includes at least one filter a and at least one actuation sensor B. The number of the at least one filter a and the at least one actuation sensor B in the following embodiments is merely one for illustration, but not limited thereto, and the filter a and the actuation sensor B may be a combination of a plurality of them. Filter A includes two rings A1, each having a first screen A2 on ring A1. The actuation sensor B includes at least one body 1, at least one gas sensor 2, at least one actuator 3, and at least one particle monitoring module 4. In the following embodiments, the number of the at least one body 1, the at least one gas sensor 2, the at least one actuator 3 and the at least one particle monitoring module 4 is used for illustration, but not limited thereto. The body 1, the gas sensor 2, the actuator 3 and the particle monitoring module 4 may be a combination of a plurality of them. The body 1 has at least one monitoring chamber 11, at least one air inlet 12, at least one filtering port 13, at least one air outlet 14 and at least one second filter 16. For avoiding redundancy, in the following description, the numbers of the at least one monitoring chamber 11, the at least one air inlet 12, the at least one filtering port 13, the at least one air outlet 14 and the at least one second filter 16 are illustrated by way of example, but not limited thereto. The monitoring chamber 11, the air inlet 12, the filter port 13, the air outlet 14 and the second filter 16 may also be a combination of a plurality of them.

Referring to fig. 2, in the first embodiment of the present invention, the gas inlet 12 of the body 1 is provided with a valve 15 for controlling the introduction of the external gas into the monitoring chamber 11. The filter port 13 is provided with a second screen 16, and the second screen 16 in the filter port 13 is made of the same material as the first screen a2 of the filter a. The first filter a2 and the second filter 16 may be made of a foam material, a non-woven fabric material, or an activated carbon filter and high efficiency filter (HEPA).

In the first embodiment, the gas sensor 2, the actuator 3 and the particle monitoring module 4 are disposed in the monitoring chamber 11. The particle monitoring module 4 includes a load bearing diaphragm 41, a particle monitoring pedestal 42, a laser emitter 43, and a particle sensor 44. The load-bearing partition 41 is disposed in the body 1, a portion of which is located in the monitoring chamber 11 and has a communication port 411. The particle monitor base 42 is disposed on the supporting partition 41 and has a supporting groove 421, a monitor channel 422, a beam channel 423 and a containing chamber 424. The receiving groove 421 is provided directly corresponding to the intake port 12, and the monitoring passage 422 communicates with the receiving groove 421. The particle sensor 44 is disposed at one end of the monitoring channel 422 far from the receiving groove 421, such that the receiving groove 421 and the particle sensor 44 are respectively disposed at two opposite ends of the monitoring channel 422. The light beam passage 423 communicates between the accommodation chamber 424 and the monitoring passage 422. In the present embodiment, one end of the beam channel 423 is perpendicular to and communicated with the monitoring channel 422, and the other end is communicated with the accommodating chamber 424, such that the accommodating chamber 424 and the monitoring channel 422 are respectively communicated with two ends of the beam channel 423. The laser emitter 43 is disposed in the accommodating chamber 424 and electrically connected to the bearing partition 41. The laser emitter 43 is used for emitting a laser beam through the beam path 423 and irradiating the aerosol particles in the gas in the monitoring path 422, and when the aerosol particles in the gas in the monitoring path 422 are irradiated by the laser beam, a plurality of light spots are generated and projected on the surface of the particle sensor 44, and the particle sensor 44 monitors the particle size and concentration of the aerosol particles in the gas in the monitoring path 422 by the measuring light spots. After the monitoring is finished, the gas is discharged out of the main body 1 through the communication port 411 and the gas outlet 14 of the main body 1 in sequence. In a first embodiment of the present disclosure. The particulate matter sensor 44 is a PM2.5 sensor, but not limited thereto. In the first embodiment, the gas sensor 2 is a volatile organic compound sensor, but not limited thereto.

Referring to fig. 2, in the first embodiment of the present invention, the actuator 3 is disposed in the receiving slot 421 of the particle monitoring module 4, so that the external air outside the body 1 can be introduced into the monitoring chamber 11 through the air inlet 12 by activating the actuator 3, and the air is introduced into the monitoring channel 422 to calculate the particle size and concentration of the suspended particles contained in the air. In addition, the actuator 3 can eject gas onto the surface of the particle sensor 44 at a high speed to clean the surface of the particle sensor 44, and eject the aerosol attached to the surface of the particle sensor 44, thereby maintaining the surface of the particle sensor 44 clean and maintaining the monitoring accuracy.

Referring to fig. 3 to 4C, the actuator 3 of the first embodiment of the present invention is a gas pump, and the actuator 3 includes a jet hole plate 31, a cavity frame 32, an actuating body 33, an insulating frame 34 and a conductive frame 35 stacked in sequence. The air hole plate 31 includes a plurality of connecting members 31a, a suspension plate 31b and a hollow hole 31 c. The floating piece 31b may be bent to vibrate, and the plurality of connecting members 31a may abut on the periphery of the floating piece 31 b. In the first embodiment, the number of the connecting members 31a is 4, and the connecting members are respectively adjacent to 4 corners of the floating plate 31b, but not limited thereto. A hollow hole 31c is formed at the center of the floating plate 31 b. The chamber frame 32 is stacked on the suspension plate 31b, and the actuating body 33 is stacked on the chamber frame 32, and includes a piezoelectric carrier plate 33a, an adjusting resonance plate 33b, and a piezoelectric plate 33 c. The piezoelectric carrier plate 33a is stacked on the cavity frame 32, the tuning resonator plate 33b is stacked on the piezoelectric carrier plate 33a, and the piezoelectric plate 33c is stacked on the tuning resonator plate 33 b. The piezoelectric plate 33c is deformed after being applied with a voltage to drive the piezoelectric carrier plate 33a and the tuning resonator plate 33b to perform a reciprocating bending vibration. The insulating frame 34 is carried overlying the piezoelectric carrier plate 33a of the actuating body 33, and the conductive frame 35 is carried overlying the insulating frame 34. Wherein a resonant cavity 36 is formed between the actuating body 33, the cavity frame 32 and the suspension plate 31 b. Wherein the thickness of the tuning resonator plate 33b is larger than that of the piezoelectric carrier plate 33 a.

Referring to fig. 4A, the actuator 3 is disposed in the receiving slot 421 of the particle monitoring base 42 through the connecting member 31a by the actuator 3. The air injection hole 31 is spaced apart from the bottom surface of the receiving groove 421, and an air flow chamber 37 is formed therebetween. Referring to fig. 4B, when a voltage is applied to the piezoelectric plate 33c of the actuating body 33, the piezoelectric plate 33c begins to deform due to the piezoelectric effect and drives the tuning resonator plate 33B and the piezoelectric carrier plate 33a to displace. At this time, the air injection hole piece 31 is driven by the Helmholtz resonance (Helmholtz resonance) principle, so that the actuating body 33 moves in a direction away from the bottom surface of the receiving groove 421. Since the actuating body 33 moves in a direction away from the bottom surface of the receiving groove 421, the volume of the airflow chamber 37 between the air injection hole piece 31 and the bottom surface of the receiving groove 421 increases, and the air pressure inside the airflow chamber 37 forms a negative pressure, so that the air outside the actuator 3 enters the airflow chamber 37 from the gap between the connecting piece 31a of the air injection hole piece 31 and the side wall of the receiving groove 421 due to the pressure gradient and is subjected to pressure collection. Referring to fig. 4C, when the gas continuously enters the gas flow chamber 37 to form a positive pressure in the gas flow chamber 37, the actuating body 33 is driven by the voltage to move toward the bottom surface of the receiving groove 421, so as to compress the volume of the gas flow chamber 37 and push the air in the gas flow chamber 37, so that the gas enters the monitoring channel 422. Thereby, the particle sensor 44 can detect the aerosol concentration in the gas.

The actuator 3 in the first embodiment is a gas pump, but the actuator 3 may also be a mems gas pump fabricated by a mems process. The air hole plate 31, the cavity frame 32, the actuating body 33, the insulating frame 34 and the conductive frame 35 can be fabricated by surface micromachining to reduce the volume of the actuator 3.

With continued reference to fig. 2 and 5A, the valve 15 includes a retaining member 151, a sealing member 152, and a displacement member 153. The displacement member 153 is disposed between the holder 151 and the seal 152. The holder 151, the seal 152, and the displacer 153 have a plurality of through holes 151a, 152a, and 153a, respectively. The plurality of through-holes 151a of the holder 151 and the plurality of through-holes 153a of the displacement member 153 are aligned with each other, and the plurality of through-holes 152a of the seal member 152 and the plurality of through-holes 151a of the holder 151 are misaligned with each other.

Referring first to fig. 5A, displacement element 153 is a charged material and retaining element 151 is a conductive material having two polarities. When the displacer 153 maintains the same polarity as the holder 151, the displacer 153 approaches the seal 152, constituting the closure of the valve 15. Referring to fig. 5B, when the polarity of the displacement element 153 is different from that of the holding element 151, the displacement element 153 approaches the holding element 151, thereby opening the valve 15. The displacement member 153 is moved by adjusting the polarity of the holding member 151 to form the opened and closed states of the valve 15.

In addition, the displacement member 153 of the valve 15 may be a magnetic material, and the retaining member 151 may be a magnetic material with controllable polarity reversal. When the displacer 153 maintains the same polarity as the holder 151, the displacer 153 approaches the seal 152, closing the valve 15; conversely, when the holder 151 changes polarity from the displacer 153, the displacer 153 will move closer to the holder 151, creating an open valve 15. As can be seen from the above description, the opening and closing state of the valve 15 can be adjusted by moving the displacement member 153 by adjusting the magnetism of the holder 151. It is noted that the polarity of the magnetic poles of the holder 151 can be controlled by a processor (not shown).

The gas monitoring device further includes a microprocessor (not shown) for performing calculation processing and outputting on the data monitored by the gas sensor 2 and the particle sensor 44 of the particle monitoring module 4. The supporting partition 41 of the particle monitoring module 4 is a driving circuit board and has a connector 412, and the connector 412 is electrically connected to a microprocessor for controlling the output and input of signals. The particle sensor 44, the actuator 3, the valve 15, and the gas sensor 2 are all electrically connected to the carrier diaphragm 41.

When a user needs to monitor the inhaled gas information, the control valve 15 is opened to enable the gas to enter through the gas inlet 12 or the filtering port 13, and at this time, the gas sensor 2 and the particle monitoring module 4 located in the monitoring chamber 11 start to monitor the gas in the monitoring chamber 11, so as to calculate the gas information and the particle size and concentration of the suspended particles contained in the gas information.

When the user needs to confirm the filtering effect of the filter a and the timing of replacing the first filter a2, the user only needs to confirm the state of the second filter 16 of the gas monitoring device and the timing of replacing the second filter 16. When the replacement timing of the second filter 16 is confirmed, the closing valve 15 is controlled to close the gas inlet 12, and after the actuator 3 is actuated, the gas outside the body 1 will enter from the filter port 13, and at this time, the gas entering the monitoring chamber 11 will be monitored by the gas sensor 2 located in the monitoring chamber 11 and the particle sensor 44 of the particle monitoring module 4, and the gas information and the particle size and concentration of the aerosol contained therein are calculated. When the microprocessor compares the gas information monitored by the gas sensor 2 and the particle size and concentration of the aerosol monitored by the particle sensor 44 of the particle monitoring module 4 when the valve 15 is opened with the gas information monitored when the valve 5 is closed with the particle size and concentration of the aerosol, the filtering effect of the second filter 16 can be obtained. When the comparison result reaches a predetermined value, the replacement time of the second filter 16 is determined. Since the second screen 16 in the filtering port 13 and the first screen a2 of the filter a are made of the same material, the user can determine the time for replacing the second screen 16 of the gas monitoring device and the first screen a2 of the filter a, so that the filter disposed in the nasal cavity of the user can be used safely and reliably.

Referring to fig. 6, the structure and operation of the second embodiment of the gas monitoring device of the present invention are substantially the same as those of the first embodiment, except for the structure and operation of the actuator 3', and the structure and operation of the actuator 3' of the second embodiment will be described below.

Referring to fig. 7A, 7B and 8A, the actuator 3' is a gas pump, and includes an air inlet plate 31', a resonator plate 32', a piezoelectric actuator 33', a first insulating plate 34', a conductive plate 35' and a second insulating plate 36 '. The air inlet plate 31', the resonance plate 32', the piezoelectric actuator 33', the first insulating plate 34', the conductive plate 35', and the second insulating plate 36' are sequentially stacked and combined.

In the second embodiment, the air inlet plate 31 'has at least one air inlet hole 31a', at least one bus bar slot 31b 'and a bus chamber 31 c'. The bus bar groove 31b 'is provided corresponding to the intake hole 31 a'. The gas inlet holes 31a 'are supplied with the introduced gas, and the bus groove 31b' guides the gas introduced from the gas inlet holes 31a 'to flow to the bus chamber 31 c'. The resonator plate 32 'has a hollow hole 32a', a movable portion 32b ', and a fixed portion 32 c'. The hollow hole 32a ' is provided corresponding to the confluence chamber 31c ' of the intake plate 31 '. The movable portion 32b 'is disposed around the hollow hole 32a', and the fixed portion 32c 'is disposed at the periphery of the movable portion 32 b'. The resonator plate 32' and the piezoelectric actuator 33' together form a chamber space 37' therebetween. Therefore, when the piezoelectric actuator 33' is driven, the gas is introduced through the gas inlet hole 31a ' of the gas inlet plate 31' and is collected into the collecting chamber 31c ' through the collecting groove 31b '. Then, the gas passes through the hollow hole 32a ' of the resonance plate 32', so that the piezoelectric actuator 33' resonates with the movable portion 32b ' of the resonance plate 32' to transmit the gas.

Referring to fig. 7A, fig. 7B and fig. 8A, in the second embodiment, the piezoelectric actuator 33' includes a suspension plate 33a ', a frame 33B ', at least one support 33c ' and a piezoelectric element 33d '. In the second embodiment, the suspension plate 33a' has a square shape and can be bent and vibrated, but not limited thereto. The suspension plate 33a 'has a convex portion 33 f'. In the second embodiment, the suspension plate 33a 'is designed in a square shape, because the structure of the square suspension plate 33a' has the advantage of power saving compared to the circular shape. The power consumption of the capacitive load operating at the resonant frequency increases as the resonant frequency increases, and the power consumption is lower because the resonant frequency of the square suspension plate 33a' is lower than that of the circular suspension plate. However, in other embodiments, the shape of the suspension plate 33a' may vary according to actual requirements. The outer frame 33b 'is disposed around the outer side of the suspension plate 33 a'. The bracket 33c 'is connected between the suspension plate 33a' and the outer frame 33b 'to provide a supporting force for elastically supporting the suspension plate 33 a'. The piezoelectric element 33d 'has a side length smaller than or equal to a side length of the suspension plate 33 a'. The piezoelectric element 33d ' is attached to a surface of the suspension plate 33a ' for applying a driving voltage to drive the suspension plate 33a ' to vibrate in a bending manner. At least one gap 33e 'is formed between the suspension plate 33a', the outer frame 33b 'and the support 33c' for the gas to pass through. The convex portion 33f 'is provided to protrude on the other surface of the suspension plate 33 a'. In the second embodiment, the floating plate 33a 'and the protrusion 33f' are integrally formed by an etching process, but not limited thereto.

Referring to fig. 8A, in the second embodiment, the cavity space 37 'may be filled with a material, such as but not limited to a conductive adhesive, by using a gap generated between the resonator plate 32' and the outer frame 33b 'of the piezoelectric actuator 33', so that a certain depth may be maintained between the resonator plate 32 'and the suspension plate 33a', thereby guiding the gas to flow more rapidly. In addition, since the suspension plate 33a 'is kept at a proper distance from the resonator plate 32', contact interference therebetween is reduced, and noise generation can be reduced. In other embodiments, the thickness of the conductive paste filled in the gap between the resonator plate 32' and the outer frame 33b ' of the piezoelectric actuator 33' can be reduced by increasing the height of the outer frame 33b ' of the piezoelectric actuator 33 '. Thus, under the condition that the suspension plate 33a 'and the resonator plate 32' can still keep a proper distance, the whole assembly of the actuator 3 'does not influence the filling thickness of the conductive adhesive due to the hot-pressing temperature and the cooling temperature, and the conductive adhesive is prevented from influencing the actual size of the cavity space 37' after the assembly due to the factors of thermal expansion and cold contraction.

Referring to fig. 8B, in another embodiment, the suspension plate 33a 'may be formed by stamping, such that the suspension plate 33a' extends outward by a distance, and the outward extension distance may be adjusted by forming the bracket 33c 'between the suspension plate 33a' and the outer frame 33B ', such that the surface of the protrusion 33f' on the suspension plate 33a 'and the surface of the outer frame 33B' are both non-coplanar. The assembly surface of the outer frame 33b' is coated with a small amount of filling material, such as: the conductive adhesive is used for adhering the piezoelectric actuator 33 'to the fixing portion 32c' of the resonator plate 32 'in a hot pressing manner, so that the piezoelectric actuator 33' can be assembled and combined with the resonator plate 32', the structural improvement of forming a cavity space 37' by stamping the suspension plate 33a 'of the piezoelectric actuator 33' is directly realized, and the required cavity space 37 'can be completed by adjusting the stamping forming distance of the suspension plate 33a' of the piezoelectric actuator 33', thereby effectively simplifying the structural design of adjusting the cavity space 37', simplifying the manufacturing process, shortening the manufacturing process time and the like.

Referring back to fig. 7A and 7B, in the second embodiment, the first insulating sheet 34', the conductive sheet 35' and the second insulating sheet 36' are frame-shaped thin sheets, but not limited thereto. The air inlet plate 31', the resonator plate 32', the piezoelectric actuator 33', the first insulating plate 34', the conducting plate 35 'and the second insulating plate 36' can be processed by micro-electromechanical surface micromachining to reduce the volume of the actuator 3 'and form the actuator 3' of the mems.

Next, referring to fig. 8C, in the operation process of the piezoelectric actuator 33', the piezoelectric element 33d ' of the piezoelectric actuator 33' is deformed after being applied with the driving voltage, so as to drive the suspension plate 33a ' to displace in the direction away from the air inlet plate 31', and at this time, the volume of the chamber space 37' is increased, so that a negative pressure is formed in the chamber space 37', and the air in the confluence chamber 31C ' is drawn into the chamber space 37 '. At the same time, the resonance plate 32' resonates and is displaced away from the inlet plate 31', which in turn increases the volume of the joining chamber 31c '. And the gas in the confluence chamber 31c 'is also in a negative pressure state due to the gas in the confluence chamber 31c' entering the chamber space 37', and the gas is sucked into the confluence chamber 31c' through the gas inlet 31a 'and the bus bar groove 31 b'.

Then, as shown in fig. 8D, the piezoelectric element 33D ' drives the suspension plate 33a ' to displace toward the air intake plate 31', and compresses the chamber space 37', and likewise, the resonance plate 32' is actuated by the suspension plate 33a ' to generate resonance and displace toward the air intake plate 31', so as to force the gas in the chamber space 37' to be synchronously pushed and further transmitted through the gap 33e ', and thus, the effect of transmitting the gas is achieved.

Finally, as shown in fig. 8E, when the suspension plate 33a ' is driven to return to the state of not being driven by the piezoelectric element 33d ', the resonator plate 32' is also driven to displace in the direction away from the air inlet plate 31', and at this time, the resonator plate 32' moves the gas in the compression chamber space 37' to the gap 33E ', and raises the volume in the confluence chamber 31c ', so that the gas can continuously pass through the air inlet hole 31a ' and the confluence groove 31b ' to be converged in the confluence chamber 31c '. By repeating the above-mentioned operation steps of the actuator 3' shown in fig. 8C to 8E, the actuator 3' can continuously make the gas flow at a high speed, so as to achieve the operation of delivering and outputting the gas by the actuator 3 '.

Referring back to fig. 7A and 7B, a conductive pin 351 'protrudes from the outer edge of the conductive sheet 35', and a curved electrode 352 'protrudes from the inner edge, the electrode 352' is electrically connected to the piezoelectric element 33d 'of the piezoelectric actuator 33'. The conductive pin 351 'of the conductive plate 35' is connected to an external current, so as to drive the piezoelectric element 33d 'of the piezoelectric actuator 33'. In addition, the first insulating sheet 34 'and the second insulating sheet 36' are provided to prevent short circuit.

In summary, the gas monitoring device provided by the present disclosure is used for monitoring the air quality of the air passing through the second filter, providing the user with real-time and accurate gas information, and providing the user with the filter effect of the filter when the user plugs the filter disposed in the nasal cavity, so that the user can determine the time for replacing the filter, thereby improving the reliability of safe use and having great utility.

Various modifications may be made by those skilled in the art without departing from the scope of the invention as defined by the appended claims.

Claims (20)

1. A gas monitoring device, comprising:

a filter having two plug rings, each of the two plug rings having a first filter screen; and

at least one actuation sensor, the actuation sensor comprising:

the body is provided with a monitoring chamber, the monitoring chamber is provided with at least one air inlet, at least one filtering port and at least one air outlet, the air inlet is provided with a valve for controlling external air to be introduced into the monitoring chamber, and the filtering port is provided with a second filter screen which is made of the same material as the first filter screen of the filter;

at least one gas sensor arranged in the monitoring chamber;

at least one actuator disposed in the monitoring chamber for controlling gas introduction; and

at least one particle monitoring module, which is arranged in the monitoring chamber and comprises a particle sensor;

the valve is opened first, the actuator is started simultaneously, so that external air is led into the monitoring cavity from the air inlet, the air is monitored through the air sensor, the particle size and concentration of suspended particles contained in the air are monitored through the particle sensor of the particle monitoring module, then the valve is closed, the external air is led into the monitoring cavity from the filtering port, the external air is filtered through the second filter screen, the filtered external air is monitored through the air sensor and the particle sensor, the content of the filtered air in the monitoring cavity and the particle size and concentration of the contained suspended particles are calculated, and the replacement time of the first filter screen and the second filter screen is judged.

2. The gas monitoring device of claim 1, wherein the particle monitoring module further comprises:

a bearing clapboard which is arranged on the body and is provided with a communicating port;

a particle monitoring base, which is arranged on the bearing clapboard and is provided with a bearing groove, a monitoring channel, a light beam channel and a containing chamber, wherein the bearing groove is directly arranged corresponding to the air inlet, the monitoring channel is communicated with the bearing groove, the particle sensor is arranged at one end of the monitoring channel far away from the bearing groove, and the light beam channel is communicated between the containing chamber and the monitoring channel; and

a laser emitter, which is arranged in the containing chamber and electrically connected with the bearing clapboard and is used for emitting a laser beam to the beam channel, so that the gas passing through the monitoring channel is irradiated by the laser beam, the suspended particles in the gas are irradiated by the laser beam and then emit light spots, the particle sensor monitors the particle size and the concentration of the suspended particles by measuring the light spots projected by the suspended particles, and in addition, the gas passing through the monitoring channel is sequentially discharged out of the body from the communicating port and the gas outlet.

3. The gas monitoring device of claim 2, wherein the actuator is disposed in the receiving slot for directing gas into the monitoring channel.

4. The gas monitoring device of claim 1, wherein the particulate sensor is a PM2.5 sensor.

5. The gas monitoring device as claimed in claim 1, wherein the actuator ejects gas at a high velocity onto a surface of the particle sensor to clean the surface of the particle sensor and eject aerosols attached to the surface, thereby maintaining the monitoring accuracy of the particle sensor.

6. The gas monitoring device of claim 2, wherein the carrier web is a driver circuit board and includes a connector electrically connected to a microprocessor for controlling signal output and input.

7. The gas monitoring device of claim 6, wherein the particle sensor, the actuator, and the valve are electrically connected to the load-bearing diaphragm.

8. The gas monitoring device of claim 7, wherein the valve comprises a retainer, a seal, and a displacement member, wherein the displacement member is disposed between the retainer and the seal, and the retainer, the seal, and the displacement member each have a plurality of through holes, and the plurality of through holes on the retainer and the displacement member are aligned with each other, and the seal and the plurality of through holes on the retainer are misaligned with each other, wherein the displacement member is electrically connected to the load-bearing barrier for driving the displacement member toward the retainer to open the valve.

9. The gas monitoring device of claim 2, wherein the actuator is a gas pump comprising:

a gas injection hole sheet, which comprises a plurality of connecting pieces, a suspension sheet and a hollow hole, wherein the suspension sheet can be bent and vibrated, the connecting pieces are adjacent to the periphery of the suspension sheet, the hollow hole is formed in the central position of the suspension sheet, the suspension sheet is elastically supported by the connecting pieces, the actuator is arranged in the bearing groove of the particle monitoring base through arranging the connecting pieces, a gas flow chamber is formed between the gas injection hole sheet and the bearing groove, and at least one gap is formed between the connecting pieces and the suspension sheet;

a cavity frame bearing and superposed on the suspension plate;

an actuating body bearing and superposed on the cavity frame for receiving voltage to generate reciprocating bending vibration;

an insulating frame bearing and superposed on the actuating body; and

a conductive frame, which is arranged on the insulating frame in a bearing and stacking manner;

wherein, a resonance chamber is formed among the actuating body, the cavity frame and the suspension sheet, and the suspension sheet of the air injection hole sheet is driven to generate resonance by driving the actuating body so as to generate reciprocating vibration displacement, thereby driving the air to enter the airflow chamber through the at least one gap and then enter the monitoring channel to realize the transmission of the air.

10. The gas monitoring device of claim 9, wherein the actuator comprises:

a piezoelectric carrier plate bearing and superposed on the cavity frame;

the adjusting resonance plate is loaded and stacked on the piezoelectric carrier plate; and

and the piezoelectric plate is loaded and stacked on the adjusting resonance plate and used for receiving voltage to drive the piezoelectric carrier plate and the adjusting resonance plate to generate reciprocating bending vibration.

11. The gas monitoring device of claim 10, wherein the tuned resonator plate has a thickness greater than a thickness of the piezoelectric carrier plate.

12. The gas monitoring device of claim 1, wherein the actuator is a gas pump comprising:

the air inlet plate is provided with at least one air inlet hole, at least one bus bar groove corresponding to the position of the air inlet hole and a confluence chamber, the air inlet hole is used for introducing air, and the bus bar groove is used for guiding the air introduced from the air inlet hole to the confluence chamber;

a resonance sheet having a hollow hole corresponding to the position of the confluence chamber and a movable portion surrounding the hollow hole; and

a piezoelectric actuator, which is arranged corresponding to the resonance sheet in position, and a cavity space is formed between the resonance sheet and the piezoelectric actuator, so that when the piezoelectric actuator is driven, gas is led in from the air inlet hole of the air inlet plate, is collected to the collecting cavity through the collecting groove, and then is resonated with the movable part of the resonance sheet through the hollow hole of the resonance sheet to transmit the gas;

the air inlet plate, the resonance sheet and the piezoelectric actuator are sequentially stacked.

13. The gas monitoring device of claim 12, wherein the piezoelectric actuator comprises:

a suspension plate having a square shape and capable of bending and vibrating;

the outer frame is arranged around the outer side of the suspension plate;

at least one bracket connected between the suspension plate and the outer frame to provide elastic support; and

the piezoelectric element is attached to one surface of the suspension plate and used for applying voltage to drive the suspension plate to vibrate in a bending mode.

14. The gas monitoring device of claim 12, wherein the actuator further comprises a first insulating plate, a conductive plate, and a second insulating plate, wherein the gas inlet plate, the resonator plate, the piezoelectric actuator, the first insulating plate, the conductive plate, and the second insulating plate are stacked in sequence.

15. A gas monitoring apparatus according to claim 1, wherein the gas sensor is a volatile organic compound sensor.

16. The gas monitoring device of claim 1, wherein the first filter is a foam material.

17. The gas monitoring device of claim 1, wherein the first filter is a non-woven fabric.

18. The gas monitoring device of claim 1, wherein the first filter is at least one of an activated carbon filter and a high efficiency filter (HEPA).

19. The gas monitoring device of claim 1, further comprising a microprocessor for performing an operation on the data monitored by the gas sensor and the particle sensor of the particle monitoring module and outputting the data, when the valve is opened, the data monitored by the gas sensor and the particle sensor of the particle monitoring module and the data monitored by the particle sensor of the gas sensor and the particle monitoring module when the valve is closed are compared, and when the comparison result reaches a predetermined value, the comparison result is the replacement timing of the first filter and the second filter.

20. A gas monitoring device, comprising:

at least one filter with at least two plug rings, each of which has at least one first filter screen;

at least one actuation sensor, the actuation sensor comprising:

the body is provided with at least one monitoring chamber, the monitoring chamber is provided with at least one air inlet, at least one filtering port and at least one air outlet, the air inlet is provided with at least one valve for controlling external air to be led into the monitoring chamber, and the filtering port is provided with at least one second filter screen which is made of the same material as the first filter screen of the filtered air;

at least one gas sensor arranged in the monitoring chamber;

at least one actuator disposed in the monitoring chamber for controlling gas introduction; and

at least one particle monitoring module, which is arranged in the monitoring chamber and comprises at least one particle sensor;

the valve is opened first, the actuator is started simultaneously, so that external air is led into the monitoring cavity from the air inlet, the air is monitored through the air sensor, the particle size and concentration of suspended particles contained in the air are monitored through the particle sensor of the particle monitoring module, then the valve is closed, the external air is led into the monitoring cavity from the filtering port, the external air is filtered through the second filter screen, the filtered external air is monitored through the air sensor and the particle sensor, the content of the filtered air in the monitoring cavity and the particle size and concentration of the contained suspended particles are calculated, and the replacement time of the first filter screen and the second filter screen is judged.

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