AIR POLLUTION PREVENTION SYSTEM FOR BATHROOM SPACE

An air pollution prevention system for bathroom space includes plural gas detectors, at least one filtration device, at least one exhaust fan and a cloud computing server. Plural gas detectors are disposed indoor and outdoor for detecting air pollution and outputting air pollution information. The cloud computing server receives and stores air pollution information to form a database of air pollution data. When a value of air pollution information exceeds a safety detection value, the cloud computing server issues a control command for enabling the exhaust fan to guide and exhaust the air pollution to the outdoor field, and simultaneously issues another control command for enabling a fan of the filtration device to guide the air pollution in the bathroom space to pass through a filter element of the filtration device, thereby controlling a gas state of the bathroom space at a level of air pollution close to zero.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority to Taiwan Patent Application No. 112130633, filed on Aug. 15, 2023. The entire contents of the above-mentioned patent application are incorporated herein by reference for all purposes.

FIELD OF THE INVENTION

The present disclosure relates to an air pollution prevention system for bathroom space, and more particularly to an air pollution prevention system for bathroom space in an indoor field.

BACKGROUND OF THE INVENTION

Suspended particles are solid particles or droplets contained in the air. Due to their extremely fine size, the suspended particles may enter the lungs of human body through the nasal hairs in the nasal cavity easily, causing inflammation in the lungs, asthma or cardiovascular disease. If other pollutant compounds are attached to the suspended particles, it will further increase the harm to the respiratory system. In recent years, the problem of air pollution is getting worse. In particular, the concentration of particle matters (e.g., PM2.5) is often too high. Therefore, the monitoring to the concentration of the gas suspended particles is taken more and more seriously. However, the gas flows unstably due to variable wind direction and air volume, and the general gas-quality monitoring station is located in a fixed place. Under this circumstance, it is impossible for people to check the concentration of suspended particles in current environment.

Furthermore, in recent years, modern people are placing increasing importance on the quality of the air in their surroundings. For example, carbon monoxide, carbon dioxide, volatile organic compounds (VOC), PM2.5, nitric oxide, sulfur monoxide and even the suspended particles contained in the air are exposed in the environment to affect the human health, and even endanger the life seriously. Therefore, the quality of environmental air has attracted the attention of various countries. At present, how to detect the air quality and avoid the harm is a crucial issue that urgently needs to be solved.

In order to confirm the quality of the air, it is feasible to use a gas sensor to detect the air in the surrounding environment. If the detection information can be provided in real time to warn people in the environment, it is helpful of avoiding the harm and facilitates people to escape the hazard immediately, thereby preventing the hazardous gas exposed in the environment from affecting the human health and causing the harm. Therefore, it is considered a valuable application to use a gas sensor to detect the air in the surrounding environment. Accordingly, how to intelligently and rapidly detect indoor air pollution sources and maintain suitable temperature and humidity in the bathroom space for forming a clean and safely breathable gas state is a main subject developed in the present disclosure.

SUMMARY OF THE INVENTION

The major object of the present disclosure is to provide an air pollution prevention system for bathroom space. By disposing a plurality of gas detectors in outdoor and indoor fields, the gas detectors can determine air pollution and output air pollution information. Then, a cloud computing server receives the air pollution information, stores the air pollution information to form a database of air pollution data. When a value of the air pollution information of the bathroom space exceeds a safety detection value, the cloud computing server issues a control command to enable an exhaust fan for exhausting the air pollution to the outdoor field, and at the same time, intelligently issues another control command to a fan of a filtration device for rapidly guiding the air pollution to pass through a filter element for filtration and purification, thereby controlling a gas state of the bathroom space at a level of air pollution close to zero.

In a broader aspect of the present disclosure, an air pollution prevention system for bathroom space is provided. The system includes a plurality of gas detectors disposed in an outdoor field for detecting air pollution and outputting outdoor air pollution information, and disposed in a bathroom space for detecting air pollution and outputting indoor air pollution information; at least one filtration device disposed in the bathroom space for filtering the air pollution in the bathroom space; at least one exhaust fan disposed in the bathroom space for guiding and exhausting the air pollution in the bathroom space to the outdoor field and forming a gas exchanging of the bathroom space; and a cloud computing server receiving and storing the outdoor air pollution information of the outdoor field and the indoor air pollution information of the bathroom space to form a database of air pollution data, wherein when a value of the air pollution information exceeds a safety detection value, the cloud computing server intelligently selects and issues a control command for enabling the at least one exhaust fan to guide the air pollution to exhaust to the outdoor field and controlling the gas exchanging of the bathroom space to adjust a temperature and a humidity thereof, and simultaneously, performs an artificial intelligence computing for determining a location of the air pollution and intelligently selects and issues another control command for enabling the at least one filtration device to rapidly guide the air pollution in the bathroom space to pass through the filtration device for filtration and purification, thereby controlling a gas state of the bathroom space at a level of air pollution close to zero.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Please refer toFIG.1AandFIG.1B. The present disclosure is related to an air pollution prevention system for bathroom space including a plurality of gas detectors1, at least one filtration device2, at least one exhaust fan3and a cloud computing server4.

The plurality of gas detectors1described above are disposed in an outdoor field for detecting air pollution and outputting outdoor air pollution information and disposed in a bathroom space for detecting air pollution thereinside and outputting indoor air pollution information. In the embodiment, the gas detector1includes a gas detection module installed therein. As shown inFIG.3CandFIG.11, the gas detection module includes a controlling circuit board11, a gas detection main part12, a microprocessor13and a communicator14. Notably, as shown inFIG.3AandFIG.3B, the gas detector I can be configured with an external power terminal, and the external power terminal can be directly inserted into the power interface in the bathroom space A for enabling the detection of air pollution. Alternatively, as shown inFIG.1AandFIG.3C, the gas detection module without external power supply terminals is directly disposed on the device (the filtration device2, the exhaust fan3) and connected to the power supply for enabling the detection of air pollution. That is, the gas detector I can be embedded in the filtration device2and connected with the operation of the filtration device2, or alternatively, can be embedded in the exhaust fan3and connected with the operation of the exhaust fan3. Notably, in the embodiment, the air pollution includes at least one selected from the group consisting of particulate matter, carbon monoxide, carbon dioxide, ozone, sulfur dioxide, nitrogen dioxide, lead, total volatile organic compounds (TVOC), formaldehyde, bacteria, fungi, virus and a combination thereof.

As shown inFIG.1AandFIG.2A, the at least one filtration device2, which is disposed in the bathroom space A, includes a fan21and a filter element22. The fan21is enabled to guide the air pollution in the bathroom space A to pass through the filter element22for filtration and purification. Notably, the gas detector1is connected with the operation of the fan21of the filtration device2. That is, after receiving a control command, the gas detector1controls the enablement of the fan21and the rotation speed of the fan21. As shown inFIG.2A, the airflow of the fan21flows in the path indicated by the arrows. The fan21can be arranged at the front side of the filter element22, and the fan21can also be arranged at the rear side of the filter element22. In the embodiment, as shown inFIG.2B, the filter element22includes a filter screen which purifies the air pollution through physical blocking and absorption. The filter screen can be a high efficiency particulate air (HEPA) filter screen22a,which is configured to absorb the chemical smoke, the bacteria, the dust particles and the pollen contained in the air pollution, so that the introduced air pollution is filtered and purified to achieve the effect of filtration and purification. Notably, in the embodiment, the filter element22can be the HEPA filter screen22acoating with a decomposition layer221for purifying the air pollution in chemical means. Preferably but not exclusively, the decomposition layer221includes an activated carbon221aconfigured to remove organic and inorganic substances in the air pollution, and remove colored and odorous substances. Preferably but not exclusively, the decomposition layer221includes a cleansing factor containing chlorine dioxide layer221bconfigured to inhibit viruses, bacteria, fungi, influenza A, influenza B, enterovirus and norovirus in the air pollution, and the inhibition ratio can reach 99% and more, thereby reducing the cross-infection of viruses. Preferably but not exclusively, the decomposition layer221includes an herbal protective layer221cextracted from ginkgo and Japanese Rhus chinensis configured to resist allergy effectively and destroy a surface protein of influenza virus (such as HINI influenza virus) passing therethrough. Preferably but not exclusively, the decomposition layer221includes a silver ion221dconfigured to inhibit viruses, bacteria and fungi contained in the air pollution. Preferably but not exclusively, the decomposition layer221includes a zeolite221econfigured to remove ammonia nitrogen, heavy metals, organic pollutants, Escherichia coli, phenol, chloroform and anionic surfactants. Furthermore, in some embodiments, the filter element22is combined with a light irradiation element222to purify in chemical means. Preferably but not exclusively, the light irradiation element222is a photo-catalyst unit including a photo catalyst222aand an ultraviolet lamp222b.When the photo catalyst222ais irradiated by the ultraviolet lamp222b,the light energy is converted into the electrical energy, thereby decomposing harmful substances and disinfects bacteria contained in the air pollution, so as to achieve the effects of filtration and purification. Preferably but not exclusively, the light irradiation element222is a photo-plasma unit including a nanometer irradiation tube222c.When the introduced air pollution is irradiated by the nanometer irradiation tube222c,the oxygen molecules and water molecules contained in the air pollution are decomposed into high oxidizing photo-plasma, and an ion flow capable of destroying organic molecules is generated. In that, volatile formaldehyde, volatile toluene and volatile organic compounds (VOC) contained in the air pollution are decomposed into water and carbon dioxide, so as to achieve the effects of filtration and purification. Moreover, in some embodiments, the filter element22is combined with a decomposition unit223to purify in chemical means. Preferably but not exclusively, the decomposition unit223is a negative ion unit223awhich makes the suspended particles carrying positive charges in the air pollution to adhere to negative charges, so as to achieve the effects of filtration and purification. Preferably but not exclusively, the decomposition unit223is a plasma ion unit223b.The oxygen molecules and water molecules contained in the air pollution are decomposed into positive hydrogen ions (H+) and negative oxygen ions (O2−) by the plasma ion. The substances attached with water around the ions are adhered on the surfaces of viruses and bacteria and converted into OH radicals with extremely strong oxidizing power under chemical reactions, thereby removing hydrogen (H) from the protein on the surfaces of viruses and bacteria, and thus decomposing (oxidizing) the protein, so as to filter the introduced air pollution and achieve the effects of filtration and purification.

As shown inFIG.1A, the exhaust fan3, which is disposed in the bathroom space A, guides the air pollution in the bathroom space A to exhaust to the outdoor field and form a gas exchanging of the bathroom space A. Notably, the gas detector I is embedded in the exhaust fan3in a type of gas detection module and is connected with the operation of the exhaust fan3. That is, the gas detector1controls the enablement of the exhaust fan3and the rotation speed of the exhaust fan3after receiving the control command.

In the embodiment, as shown inFIG.1A, the cloud computing server4receives and stores the outdoor air pollution information of the outdoor field and the indoor air pollution information of the bathroom space A to form an database of air pollution data, and intelligently selects and issues a control command to enable the exhaust fan3for guiding the air pollution in the bathroom space A to exhaust to the outdoor field, and to control the air exchanging of the bathroom space A for adjusting the temperature and humidity, and simultaneously, determines a location of the air pollution through an artificial intelligence computing and intelligently selects and issues another control command for enabling the filtration device2to rapidly guide the air pollution to pass through the filtration device2for filtration and purification, thereby controlling a gas state of the bathroom space A at a level of air pollution close to zero.

Please refer toFIG.12. In the embodiment, the cloud computing server4includes a wireless network cloud computing service module41, a cloud control service unit42, a device management unit43and an application program unit44. The wireless network cloud computing service module41receives air pollution communication information of the outdoor field and the bathroom space A and transmits a control command. Moreover, the wireless network cloud computing service module41receives the air pollution information of the outdoor field and the bathroom space A and transmits thereof and the received air pollution communication information to the cloud control service unit42for storing and forming the database of air pollution data. An artificial intelligence computing and a comparison based on the database of air pollution data are performed to determine a location of the air pollution, and accordingly, the control command is transmitted to the wireless network cloud computing service module41, and then transmitted to the filtration device and the exhaust fan3to control the enablement thereof through the wireless network cloud computing service module41. The device management unit43receives communication information of the filtration device2and the exhaust fan3through the wireless network cloud computing service module41to manage the user login and device binding, and device management information can be provided to the application program unit44for system control and management. The application program unit44can also display and inform the air pollution information obtained from the cloud control service unit42, so the user can know the real-time status of air pollution removal through the mobile phone or the communication device. Moreover, the user can control the operation of the air pollution prevention system for bathroom space through the application program unit44of the mobile phone or the communication device.

In view of the above descriptions, in the air pollution prevention system for bathroom space of the present disclosure, a plurality of gas detectors1are disposed in the bathroom space A and in the outdoor field, so that the gas detectors1can detect and determine the indoor air pollution and the outdoor air pollution, and respectively output the indoor air pollution information and the outdoor air pollution information. Then, the cloud computing server4receives and stores the air pollution information to form the database of air pollution data. If the air pollution information of the bathroom space A is higher than the outdoor air pollution information, the cloud computing server4issues a control command for enabling the exhaust fan3to guide the air pollution in the bathroom space A to exhaust to the outdoor field, and at the same time, intelligently selects and issues another control command for enabling the fan21of the filtration device2for rapidly guiding the air pollution of the bathroom space A to pass through the filter element22of the filtration device2for filtration and purification, thereby controlling the gas state in the bathroom space A at a level of air pollution close to zero.

Moreover, when the value of the air pollution information of the bathroom space A exceeds a safety detection value, which includes a detection value of CO2, VOC, PM2.5, temperature and/or humidity, the cloud computing server4issues the control command to enable the exhaust fan3for controlling the gas exchanging of the bathroom space A and simultaneously adjusting the temperature and humidity of the bathroom space A.

Notably, the safety detection value described above includes at least one selected from the group consisting of a concentration of PM2.5 which is less than 10 μg/m3, a concentration of carbon dioxide (CO2) which is less than 1000 ppm, a concentration of total volatile organic compounds (TVOC) which is less than 0.56 ppm, a concentration of formaldehyde (HCHO) which is less than or equal to 0.08 ppm, a colony-forming unit of bacteria which is less than 1500 CFU/m3, a colony-forming unit of fungi which is less than 1000 CFU/m3, a concentration of sulfur dioxide which is less than 0.075 ppm, a concentration of nitrogen dioxide which is less than 0.1 ppm, a concentration of carbon monoxide which is less than 9 ppm, a concentration of ozone which is less than 0.06 ppm, a concentration of lead which is less than or equal to 0.15 μg/m3, and a relative humidity (RH %) which is ranged between 30 and 70.

In some other embodiments, as shown inFIG.1AandFIG.1B, take the plurality of gas detectors1disposed in the bathroom space A for detecting PM2.5 as an example. As the air pollution prevention system for bathroom space A is enabled by the user at 7:40, the value of PM2.5 in the bathroom space A is close to that in the outdoor field. At the time the air pollution prevention system for bathroom space A detects PM2.5, the cloud computing server4receives and computes at least two air pollution information detected by the plurality of gas detectors1and performs the intelligence computing to determine the location of the air pollution in the bathroom space A. Then, the cloud computing server4intelligently issues the control command to enable the fan21of the filtration device2for generating a directional airflow to rapidly guide the air pollution to pass through the filter element22for filtration and purification. At 7:44, the value of air pollution of the bathroom space A is rapidly dropped and kept at a level close to zero.

In order to understand the air pollution prevention system for bathroom space of the present disclosure, the structure of the gas detection module of the gas detector1is described in detail below.

The gas detector includes a gas detection module installed therein. The gas detection module includes a controlling circuit board11, a gas detection main part12, a microprocessor13and a communicator14. The gas detection main part12, the microprocessor13and the communicator14are integrally packaged on the controlling circuit board11and electrically connected to each other. In the embodiment, the microprocessor13and the communicator14are mounted on the controlling circuit board11. The microprocessor13controls the driving signal of the gas detection main part12for enabling the detection. In this way, the gas detection main part12detects the air pollution and outputs the air pollution information, and the microprocessor13receives, processes and provides the air pollution information to the communicator14for externally transmitting to the cloud computing server4.

Please refer toFIG.4AtoFIG.9A. The gas detection main part12includes a base121, a piezoelectric actuator122, a driving circuit board123, a laser component124, a particulate sensor125, and an outer cover126. In the embodiment, the base121includes a first surface1211, a second surface1212, a laser loading region1213, a gas-inlet groove1214, a gas-guiding-component loading region1215and a gas-outlet groove1216. The first surface1211and the second surface1212are two surfaces opposite to each other. The laser loading region1213is hollowed out from the first surface1211toward the second surface1212. The outer cover126covers the base121and includes a side plate1261. The side plate1261has an inlet opening1261aand an outlet opening1261b.The gas-inlet groove1214is concavely formed from the second surface1212and disposed adjacent to the laser loading region1213. The gas-inlet groove1214includes a gas-inlet1214aand two lateral walls. The gas-inlet1214ais in communication with an environment outside the base121, and is spatially corresponding in position to the inlet opening1261aof the outer cover126. Two transparent windows1214bare opened on the two lateral walls of the gas-inlet groove1214and are in communication with the laser loading region1213. Therefore, the first surface1211of the base121is covered and attached by the outer cover126, and the second surface1212is covered and attached by the driving circuit board123, so that an inlet path is defined by the gas-inlet groove1214.

In the embodiment, the gas-guiding-component loading region1215is concavely formed from the second surface1212and in communication with the gas-inlet groove1214. A ventilation hole1215apenetrates a bottom surface of the gas-guiding-component loading region1215. The gas-guiding-component loading region1215includes four positioning protrusions1215bdisposed at four corners of the gas-guiding-component loading region1215, respectively. In the embodiment, the gas-outlet groove1216includes a gas-outlet1216a,and the gas-outlet1216ais spatially corresponding to the outlet opening1261bof the outer cover126. The gas-outlet groove1216includes a first section1216band a second section1216c.The first section1216bis concavely formed out from the first surface1211in a region spatially corresponding to a vertical projection area of the gas-guiding-component loading region1215. The second section1216cis hollowed out from the first surface1211to the second surface1212in a region where the first surface1211is extended from the vertical projection area of the gas-guiding-component loading region1215. The first section1216band the second section1216care connected to form a stepped structure. Moreover, the first section1216bof the gas-outlet groove1216is in communication with the ventilation hole1215aof the gas-guiding-component loading region1215, and the second section1216cof the gas-outlet groove1216is in communication with the gas-outlet1216a.In that, when first surface1211of the base121is attached and covered by the outer cover126and the second surface1212of the base121is attached and covered by the driving circuit board123, the gas-outlet groove1216and the driving circuit board123collaboratively define an outlet path.

In the embodiment, the laser component124and the particulate sensor125are disposed on and electrically connected to the driving circuit board123and located within the base121. In order to clearly describe and illustrate the positions of the laser component124and the particulate sensor125in the base121, the driving circuit board123is intentionally omitted. The laser component124is accommodated in the laser loading region1213of the base121, and the particulate sensor125is accommodated in the gas-inlet groove1214of the base121and is aligned to the laser component124. In addition, the laser component124is spatially corresponding to the transparent window1214b,so that a light beam emitted by the laser component124passes through the transparent window1214band is irradiated into the gas-inlet groove1214. A light beam path emitted from the laser component124passes through the transparent window1214band extends in an orthogonal direction perpendicular to the gas-inlet groove1214. In the embodiment, a projecting light beam emitted from the laser component124passes through the transparent window1214band enters the gas-inlet groove1214to irradiate the suspended particles contained in the gas passing through the gas-inlet groove1214. When the suspended particles contained in the gas are irradiated and generate scattered light spots, the scattered light spots are received and calculated by the particulate sensor125, which is in an orthogonal direction perpendicular to the gas-inlet groove1214, to obtain the gas detection data.

In the embodiment, the piezoelectric actuator122is accommodated in the square-shaped gas-guiding-component loading region1215of the base121. In addition, the gas-guiding-component loading region1215is in fluid communication with the gas-inlet groove1214. When the piezoelectric actuator122is enabled, the gas in the gas-inlet groove1214is inhaled by the piezoelectric actuator122, so that the gas flows into the piezoelectric actuator122, and is transported into the gas-outlet groove1216through the ventilation hole1215aof the gas-guiding-component loading region1215. Moreover, the driving circuit board123covers the second surface1212of the base121, and the laser component124is positioned and disposed on the driving circuit board123, and is electrically connected to the driving circuit board123. The particulate sensor125is also positioned and disposed on the driving circuit board123and electrically connected to the driving circuit board123. In that, when the outer cover126covers the base121, the inlet opening1261ais spatially corresponding to the gas-inlet1214aof the base121, and the outlet opening1261bis spatially corresponding to the gas-outlet1216aof the base121.

In the embodiment, the piezoelectric actuator122includes a gas-injection plate1221, a chamber frame1222, an actuator element1223, an insulation frame1224and a conductive frame1225. In the embodiment, the gas-injection plate1221is made by a flexible material and includes a suspension plate1221aand a hollow aperture1221b.The suspension plate1221ais a sheet structure and is permitted to undergo a bending deformation. Preferably but not exclusively, the shape and the size of the suspension plate1221aare corresponding to the inner edge of the gas-guiding-component loading region1215, but not limited thereto. The hollow aperture1221bpasses through a center of the suspension plate1221a,so as to allow the gas to flow therethrough. Preferably but not exclusively, in the embodiment, the shape of the suspension plate1221ais selected from the group consisting of a square, a circle, an ellipse, a triangle and a polygon, but not limited thereto.

In the embodiment, the chamber frame1222is carried and stacked on the gas-injection plate1221. In addition, the shape of the chamber frame1222is corresponding to the gas-injection plate1221. The actuator element1223is carried and stacked on the chamber frame1222and collaboratively defines a resonance chamber1226with the chamber frame1222and the gas-injection plate1221. The insulation frame1224is carried and stacked on the actuator element1223and the appearance of the insulation frame1224is similar to that of the chamber frame1222. The conductive frame1225is carried and stacked on the insulation frame1224, and the appearance of the conductive frame1225is similar to that of the insulation frame1224. In addition, the conductive frame1225includes a conducting pin1225aand a conducting electrode1225b.The conducting pin1225ais extended outwardly from an outer edge of the conductive frame1225, and the conducting electrode1225bis extended inwardly from an inner edge of the conductive frame1225. Moreover, the actuator element1223further includes a piezoelectric carrying plate1223a,an adjusting resonance plate1223band a piezoelectric plate1223c.The piezoelectric carrying plate1223ais carried and stacked on the chamber frame1222. The adjusting resonance plate1223bis carried and stacked on the piezoelectric carrying plate1223a.The piezoelectric plate1223cis carried and stacked on the adjusting resonance plate1223b.The adjusting resonance plate1223band the piezoelectric plate1223care accommodated in the insulation frame1224. The conducting electrode1225bof the conductive frame1225is electrically connected to the piezoelectric plate1223c.In the embodiment, the piezoelectric carrying plate1223aand the adjusting resonance plate1223bare made by a conductive material. The piezoelectric carrying plate1223aincludes a piezoelectric pin1223d.The piezoelectric pin1223dand the conducting pin1225aare electrically connected to a driving circuit (not shown) on the driving circuit board123, so as to receive a driving signal, such as a driving frequency and a driving voltage. Through this structure, a circuit is formed by the piezoelectric pin1223d,the piezoelectric carrying plate1223a,the adjusting resonance plate1223b,the piezoelectric plate1223c,the conducting electrode1225b,the conductive frame1225and the conducting pin1225afor transmitting the driving signal. Moreover, the insulation frame1224is insulated between the conductive frame1225and the actuator element1223, so as to avoid the occurrence of a short circuit. Thereby, the driving signal is transmitted to the piezoelectric plate1223c.After receiving the driving signal, the piezoelectric plate1223cdeforms due to the piezoelectric effect, and the piezoelectric carrying plate1223aand the adjusting resonance plate1223bare further driven to generate the bending deformation in the reciprocating manner.

Furthermore, in the embodiment, the adjusting resonance plate1223bis located between the piezoelectric plate1223cand the piezoelectric carrying plate1223aand served as a cushion between the piezoelectric plate1223cand the piezoelectric carrying plate1223a.Thereby, the vibration frequency of the piezoelectric carrying plate1223ais adjustable. Basically, the thickness of the adjusting resonance plate1223bis greater than the thickness of the piezoelectric carrying plate1223a,and the vibration frequency of the actuator element1223can be adjusted by adjusting the thickness of the adjusting resonance plate1223b.

Please further refer toFIG.7A,FIG.7B,FIG.8A,FIG.8BandFIG.9A. In the embodiment, the gas-injection plate1221, the chamber frame1222, the actuator element1223, the insulation frame1224and the conductive frame1225are stacked and positioned in the gas-guiding-component loading region1215sequentially, so that the piezoelectric actuator122is supported and positioned in the gas-guiding-component loading region1215. A clearance1221cis defined between the suspension plate1221aand an inner edge of the gas-guiding-component loading region1215for gas flowing therethrough. In the embodiment, a flowing chamber1227is formed between the gas-injection plate1221and the bottom surface of the gas-guiding-component loading region1215. The flowing chamber1227is in communication with the resonance chamber1226between the actuator element1223, the chamber frame1222and the gas-injection plate1221through the hollow aperture1221bof the gas-injection plate1221. By controlling the vibration frequency of the gas in the resonance chamber1226to be close to the vibration frequency of the suspension plate1221a,the Helmholtz resonance effect is generated between the resonance chamber1226and the suspension plate1221a,so as to improve the efficiency of gas transportation. When the piezoelectric plate1223cis moved away from the bottom surface of the gas-guiding-component loading region1215, the suspension plate1221aof the gas-injection plate1221is driven to move away from the bottom surface of the gas-guiding-component loading region1215by the piezoelectric plate1223c.In that, the volume of the flowing chamber1227is expanded rapidly, the internal pressure of the flowing chamber1227is decreased to form a negative pressure, and the gas outside the piezoelectric actuator122is inhaled through the clearance1221cand enters the resonance chamber1226through the hollow aperture1221b.Consequently, the pressure in the resonance chamber1226is increased to generate a pressure gradient. When the suspension plate1221aof the gas-injection plate1221is driven by the piezoelectric plate1223cto move toward the bottom surface of the gas-guiding-component loading region1215, the gas in the resonance chamber1226is discharged out rapidly through the hollow aperture1221b,and the gas in the flowing chamber1227is compressed, thereby the converged gas is quickly and massively ejected out of the flowing chamber1227under the condition close to an ideal gas state of the Bernoulli's law, and transported to the ventilation hole1215aof the gas-guiding-component loading region1215.

By repeating the above operation steps shown inFIG.9BandFIG.9C, the piezoelectric plate1223cis driven to generate the bending deformation in a reciprocating manner. According to the principle of inertia, since the gas pressure inside the resonance chamber1226is lower than the equilibrium gas pressure after the converged gas is ejected out, the gas is introduced into the resonance chamber1226again. Moreover, the vibration frequency of the gas in the resonance chamber1226is controlled to be close to the vibration frequency of the piezoelectric plate1223c,so as to generate the Helmholtz resonance effect to achieve the gas transportation at high speed and in large quantities. The gas is inhaled through the gas-inlet1214aon the outer cover126, flows into the gas-inlet groove1214of the base121through the gas-inlet1214a,and is transported to the position of the particulate sensor125. The piezoelectric actuator122is enabled continuously to inhale the gas into the inlet path, and facilitate the gas outside the gas detection module to be introduced rapidly, flow stably, and transported above the particulate sensor125. At this time, a projecting light beam emitted from the laser component124passes through the transparent window1214bto irritate the suspended particles contained in the gas flowing above the particulate sensor125in the gas-inlet groove1214. When the suspended particles contained in the gas are irradiated and generate scattered light spots, the scattered light spots are received and calculated by the particulate sensor125for obtaining related information about the sizes and the concentration of the suspended particles contained in the gas. Moreover, the gas above the particulate sensor125is continuously driven and transported by the piezoelectric actuator122, flows into the ventilation hole1215aof the gas-guiding-component loading region1215, and is transported to the gas-outlet groove1216. At last, after the gas flows into the gas outlet groove1216, the gas is continuously transported into the gas-outlet groove1216by the piezoelectric actuator122, and thus the gas in the gas-outlet groove1216is pushed to discharge through the gas-outlet1216aand the outlet opening1261b.

The gas detector1of the present disclosure not only can detect the particulate matters in the gas, but also can detect the gas characteristics of the introduced gas, for example, to determine whether the gas is formaldehyde, ammonia, carbon monoxide, carbon dioxide, oxygen, ozone, or the like. Therefore, in some embodiments, the gas detector1of the present disclosure further includes a gas sensor127positioned and disposed on the driving circuit board123, electrically connected to the driving circuit board123, and accommodated in the gas-outlet groove1216, so as to detect the gas characteristics of the introduced gas. Preferably but not exclusively, in an embodiment, the gas sensor127includes a volatile-organic-compound sensor for detecting the information of carbon dioxide (CO2) or volatile organic compounds (TVOC). Preferably but not exclusively, in an embodiment, the gas sensor127includes a formaldehyde sensor for detecting the information of formaldehyde (HCHO) gas. Preferably but not exclusively, in an embodiment, the gas sensor127includes a bacteria sensor for detecting the information of bacteria or fungi. Preferably but not exclusively, in an embodiment, the gas sensor127includes a virus sensor for detecting the information of virus in the gas. Preferably but not exclusively, the gas sensor127is a temperature and humidity sensor for detecting the temperature and humidity information of the gas.

In summary, the present disclosure provides an air pollution prevention system for bathroom space for solving the problem that air pollution occurs anytime and moves randomly in the indoor field. By disposing a plurality of gas detectors in the outdoor and indoor fields, the gas detectors can determine the air pollution and output the air pollution information. Then, the cloud computing server receives and stores the air pollution information to form a database of air pollution data. When the value of air pollution information of the bathroom space exceeds the safety detection value, the cloud computing server issues a control command to enable the exhaust fan for exhausting the air pollution to the outdoor field, and simultaneously selects and issues another control command to the fan of the filtration device for rapidly guiding the air pollution to pass through the filter element for filtration and purification, thereby controlling the gas state of the bathroom space at a level of air pollution close to zero. Therefore, the present disclosure is extremely industrially applicable.