Mountable fan filter unit

Abstract

An embedded fan-filter unit, applied to an indoor air purification network system, includes: a gas detector for detecting air pollution information and gas temperature and humidity information; and a gas exchange unit embedded in the indoor area, including a fan, a filter assembly, a drive controller, and a flow channel. The flow channel and the filter duct are longitudinally parallel and isolated. The fan and filter assembly are located in the filter duct, and the gas detector is electrically connected to the drive controller. The gas detector controls the operation of the fan and the gas exchange fan through IoT communication, drawing air pollution from the indoor area into the flow channel through the recirculation air inlet for filtration in the filter duct, and then introducing it back into the indoor area for recirculation filtration to suppress the gas backflow effect, thereby achieving real-time air purification.

Description

Technical Field

[0001] This invention relates to a wall-mounted fan filter unit, particularly a wall-mounted fan filter unit for near-zero air pollution detection and purification in indoor spaces. Prior Technology

[0002] Particulate matter refers to solid particles or droplets contained in gases. Due to their extremely small size, they can easily enter the lungs through nasal hairs, causing lung inflammation, asthma, or cardiovascular disease. If other pollutants adhere to particulate matter, the harm to the respiratory system will be further aggravated. In recent years, air pollution problems have become increasingly serious, especially the concentration of fine particulate matter (such as PM2.5), which is often too high. Monitoring the concentration of particulate matter has become increasingly important. However, because gases flow unpredictably with wind direction and volume, and most current gas quality monitoring stations for detecting particulate matter are fixed-point, it is impossible to accurately determine the current concentration of particulate matter in the surrounding environment.

[0003] Furthermore, modern people are paying increasing attention to the quality of the air in their surroundings. For example, gases such as carbon monoxide, carbon dioxide, volatile organic compounds (VOCs), PM2.5, nitrogen monoxide, and sulfur monoxide, as well as particulate matter contained within these gases, can all affect human health when exposed to the environment, and in severe cases, even endanger life. Therefore, the quality of environmental air quality has become a major concern for many countries, and how to detect air quality and avoid or stay away from areas with poor air quality is a pressing issue.

[0004] Using a gas sensor to detect ambient gases is a viable way to determine the quality of gases. If it can also provide real-time detection information to alert people in the environment, allowing them to take immediate precautions or escape, thus avoiding harm to their health from harmful gases, then using a gas sensor to detect the surrounding environment is an excellent application.

[0005] Furthermore, indoor air quality is not easy to control. In addition to outdoor air quality, indoor air conditioning conditions and pollution sources are the main factors affecting indoor air quality. It can intelligently and quickly detect indoor air pollution sources in various indoor areas, effectively remove indoor air pollution to form a clean and safe breathing gas state, and monitor indoor air quality anytime and anywhere.

[0006] Furthermore, indoor air quality is not easy to control. Besides outdoor air quality, indoor air conditioning conditions and pollution sources are the main factors affecting indoor air quality. A system that can intelligently and quickly detect indoor air pollution sources in various indoor areas can effectively remove indoor pollutants, creating a clean and safe breathing environment, and can monitor indoor air quality anytime, anywhere. Of course, if indoor areas can be strictly controlled according to "clean room" standards to prevent the introduction, generation, and retention of particulate matter, and if temperature and humidity are controlled within the required range, then the clean room requirements for a safe breathing environment can be met.

[0007] In view of this, how to detect indoor air quality in indoor spaces and how to solve the problem of air pollution so that indoor spaces can meet the cleanliness requirements of cleanrooms and avoid the health effects and harm caused by harmful gases in the environment, this invention provides a wall-mounted fan filter unit, which is the main research topic of this invention. Summary of the Invention

[0008] The main objective of this invention is to provide a recessed fan-filter unit for near-zero air pollution detection and purification in indoor spaces. This unit utilizes an internal design that integrates at least one gas detector, at least one fan, at least one filter assembly, a drive controller, and a flow channel, eliminating the need for piping. The flow channel includes a recirculating air inlet connecting to the indoor space and a filter duct also connecting to the indoor space. The fan and filter assembly are housed within the filter duct. The gas detector and drive controller are electrically connected, forming an intelligent linkage system with the cloud computing service device of the indoor air purification network system. In this system, the gas detector receives data from the cloud computing service device of the indoor air purification network system via Internet of Things (IoT) communication. A control command activates the drive controller to start the operation of the air duct, drawing air pollutants from the indoor area through the recirculation air inlet into the air duct, where they are filtered and purified by the filter components before being introduced back into the indoor space. This repeated process of circulating and filtering air pollutants effectively suppresses the backflow effect of gas, achieving real-time detection and purification of air pollutants to near-zero cleanroom cleanliness levels. Simultaneously, the intelligent linkage system monitors the air pollutants in the indoor space and compares them with the ambient air quality, real-time controlling the air duct to adjust the airflow according to the air quality. This effectively regulates the energy-saving benefits of the mounted fan filter unit and achieves near-zero noise levels, reaching a balanced and environmentally friendly extreme.

[0009] To achieve the above objectives, the present invention provides a wall-mounted fan and filter unit applied to an indoor air purification network system, comprising: at least one gas detector for detecting air pollution information and gas temperature and humidity information in an indoor area, wherein the indoor area is provided with at least one air intake and at least one exhaust port; a gas exchange unit, wall-mounted in the indoor area, comprising at least one fan, at least one filter assembly, a drive controller, and a flow channel, wherein the flow channel has an air intake corresponding to an outdoor area, a recirculation return air intake connecting to the indoor area, and a filter duct connecting to the indoor area, wherein the recirculation return air intake section is provided with a gas exchange fan, and the at least one A blower and at least one filter assembly are disposed in the filter duct, and at least one gas detector is electrically connected to the drive controller. The at least one gas detector sends a control command to the drive controller via Internet of Things communication to control the drive controller to start the operation of the at least one blower and the gas exchange fan, so as to introduce the gas from an outdoor area into the filter duct, filter it through the at least one filter assembly, and then enter the indoor area. At the same time, the gas in the indoor area re-enters the filter duct through the recirculation return air port, and the air pollutants are repeatedly circulated and filtered through the at least one filter assembly, and the temperature is adjusted to carry out ventilation, so as to achieve a cleanliness level close to zero cleanroom. Simple Explanation of the Diagram

[0010] Figure 1A is a schematic diagram of the embedded fan filter unit of the present invention. Figure 1B shows an embodiment of the wall-mounted fan filter unit of the present invention in an indoor setting. Figure 2 is a schematic diagram of the assembly relationship of the filter components of the embedded fan filter unit of the present invention. Figure 3A is a three-dimensional schematic diagram of the gas detector of the present invention. Figure 3B is a three-dimensional schematic diagram of the gas detector of the present invention from another angle. Figure 3C is a schematic diagram of the appearance of the gas detection module installed inside the gas detector of the present invention. Figure 4A is a three-dimensional assembly diagram of the gas detection subject of the present invention (I). Figure 4B is a three-dimensional assembly diagram (II) of the gas detection main body of the present invention. Figure 4C is a three-dimensional exploded view of the gas detector of the present invention. Figure 5A is a three-dimensional schematic diagram (a) of the base of the present invention. Figure 5B is a three-dimensional schematic diagram (II) of the base of the present invention. Figure 6 is a three-dimensional schematic diagram (III) of the base of the present invention. Figure 7A is a three-dimensional schematic diagram showing the disassembled piezoelectric actuator and base of the present invention. Figure 7B is a three-dimensional schematic diagram of the piezoelectric actuator and base assembly of the present invention. Figure 8A is a three-dimensional exploded view (a) of the piezoelectric actuator of the present invention. Figure 8B is a three-dimensional exploded view (II) of the piezoelectric actuator of the present invention. Figure 9A is a cross-sectional schematic diagram of the piezoelectric actuator of the present invention (I). Figure 9B is a cross-sectional schematic diagram (II) of the piezoelectric actuator of the present invention. Figure 9C is a cross-sectional schematic diagram of the piezoelectric actuator of the present invention (III). Figure 10A is a cross-sectional view (I) of the gas detection main assembly. Figure 10B is a cross-sectional view (II) of the gas detection main assembly. Figure 10C is a cross-sectional view (III) of the gas detection main assembly. Figure 11 is a schematic diagram of the gas detector transmission of the present invention. Implementation

[0011] Embodiments embodying the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can be varied in different forms without departing from the scope of the invention, and the descriptions and illustrations herein are for illustrative purposes only and not intended to limit the invention.

[0012] Please refer to Figures 1A and 1B. This invention relates to a wall-mounted fan filter unit (FFU) applied to an indoor air purification network system. It includes: at least one gas detector 1, detecting air pollution information and gas temperature and humidity information in an indoor area A; a gas exchange unit 2, wall-mounted in the indoor area A, including at least one fan 21, at least one filter assembly 22, a drive controller 23, and a flow channel 24. The flow channel 24 has a recirculation return air inlet 24a connecting to the indoor area A and a filter duct 24b connecting to the indoor area A. The fan 21 and filter assembly 22 are connected to the filter duct 24b, and the gas detector 1 is electrically connected to the drive controller 23. The volume detector 1 sends a control command to the drive controller 23 via IoT communication to start the operation of the fan 21. The fan 21 draws air pollution from indoor area A into the flow channel 24 through the recirculation return air inlet 24a and through the filter duct 24b. The air pollution is then filtered and purified by the filter component 22 before being introduced into the space of indoor area A. The flow channel 24 and the filter duct 24b are set in a longitudinal parallel and isolated manner, repeatedly circulating and filtering the air pollution in the space of indoor area A to achieve real-time circulating filtration and purification treatment. This effectively suppresses the backflow effect of gas and achieves a cleanliness level of near-zero air pollution.

[0013] It is worth noting that the embedded fan filter unit is used for near-zero air pollution detection and purification in indoor space A. The design of embedding it in indoor space A without the need for piping, and the longitudinal parallel isolation between the air guide channel 24 and the filter air duct 24b, effectively suppress the backflow effect of the circulating filtered gas, and achieve near-zero air pollution purification in a cleanroom. Indoor space A requires a cleanroom class of ZAPClean room 1~12.

[0014] Please refer to Figure 1B. This invention provides a wall-mounted fan filter unit applied to an indoor air purification network system. The indoor air purification network system includes: a plurality of gas detectors 1 deployed in an indoor area A and an outdoor area B to detect air pollution information and gas temperature and humidity information. Indoor area A is provided with at least one air intake C1 and at least one exhaust outlet C2. The system also includes at least one hardware device for controlling gas molecules, wherein the hardware device for controlling gas molecules includes at least one wall-mounted fan filter unit, at least one wall-mounted gas exchange device 4 corresponding to the air intake C1, at least one air purifier 5, at least one exhaust fan device 6 corresponding to the exhaust outlet C2, at least one smoke exhaust system 7 corresponding to the exhaust outlet C2, at least one air conditioning unit 8, at least one vacuum cleaner 9, and at least one dehumidifier 10 installed in the indoor area. In domain A, each hardware device for controlling gas molecules is equipped with at least one gas detector 1, at least one fan 21, at least one filter assembly 22, and at least one drive controller 23. The gas detector 1 is electrically connected to the drive controller 23 and includes a networked cloud computing service device 3. Through Internet of Things communication, the device receives air pollution information and gas temperature and humidity information detected by the gas detector 1 in indoor domain A and outdoor domain B, stores them to form an air pollution big data database, and intelligently selects to send a control command to the gas detector 1 to receive, so as to control the drive controller 23 to start the operation of the fan 21. This enables the indoor domain A to be ventilated, temperature and humidity adjusted, and air pollution to be repeatedly purified through the filter assembly 22 to achieve near-zero cleanroom treatment. The gas detector 1 also transmits air pollution information and gas temperature and humidity information in indoor domain A to the outside world.

[0015] Of course, the gas detector 1 mentioned above is deployed in indoor area A and outdoor area B to detect air pollution information and gas temperature and humidity information, and outputs the air pollution information and gas temperature and humidity information through Internet of Things (IoT) communication. It is worth noting that the gas detector 1 is equipped with a gas detection module. Please refer to Figures 3A and 3B. The gas detector 1 can be configured with an external power supply terminal, which can be directly plugged into the power interface in indoor area A to start operation and detect air pollution. Alternatively, as shown in Figure 3C, it can be configured without an external power supply terminal and directly connected to the gas molecule control hardware device (embedded fan filter unit, embedded gas exchange device 4, air purifier 5, exhaust device 6, smoke exhaust system 7, air conditioning unit 8, vacuum cleaner 9 and dehumidifier 10) for electrical connection. It receives a control command to control the power supply of the gas molecule control hardware device to start the operation of the fan 21.

[0016] The aforementioned Internet of Things (IoT) communication refers to a collective network connecting various devices and the technology that facilitates communication between devices and the cloud, as well as between devices themselves. This IoT communication can be a wired communication, allowing connection to the networked cloud computing service device 3 via a wired line. Alternatively, IoT communication can be a wireless communication, allowing communication with the networked cloud computing service device 3 via a wireless connection. This wireless communication can be one of a Wi-Fi module, a Bluetooth module, a radio frequency identification (RFID) module, or a near-field communication (NFC) module.

[0017] It is worth noting that the air pollution mentioned above refers to one or a combination of particulate matter, carbon monoxide, carbon dioxide, ozone, sulfur dioxide, nitrogen dioxide, lead, total volatile organic compounds, formaldehyde, bacteria, fungi, and viruses.

[0018] Of course, each gas detector 1 monitors the air quality in the indoor space A anytime and anywhere, and transmits the air pollution information in the indoor space A to the air pollution big data database of the networked cloud computing service device 3. It intelligently compares the ambient air quality status and controls the air guide fan 21 of the gas molecule control hardware device deployed in each area to adjust the airflow according to the air quality, effectively controlling the energy-saving benefits of the gas molecule control hardware device operation.

[0019] To understand the specific implementation of the wall-mounted fan filter unit provided by this invention, the following is a detailed description of the gas detection module structure of the gas detector 1 of this invention. Please refer to Figures 3A to 11. The gas detection module includes: a control circuit board 11, a gas detection body 12, a microprocessor 13, and a communicator 14. The gas detection body 12, microprocessor 13, and communicator 14 are integrated into the control circuit board 11 and electrically connected to each other. The microprocessor 13 and communicator 14 are mounted on the control circuit board 11. The microprocessor 13 controls the drive signal of the gas detection body 12 to start the detection operation. Thus, the gas detection body 12 detects air pollution and outputs detection information, which is processed by the microprocessor 13 and provided to the communicator 14 for external transmission to the networked cloud computing service device 3 via Internet of Things (IoT) communication.

[0020] Referring again to Figures 4A to 9A, the aforementioned gas detection body 12 includes a base 121, a piezoelectric actuator 122, a drive circuit board 123, a laser assembly 124, a particle sensor 125, and an outer cover 126. The base 121 has a first surface 1211, a second surface 1212, a laser mounting area 1213, an air inlet groove 1214, a gas guide assembly support area 1215, and an air outlet groove 1216. The first surface 1211 and the second surface 1212 are two surfaces arranged opposite to each other. The laser mounting area 1213 is formed by hollowing out from the first surface 1211 towards the second surface 1212. Furthermore, the outer cover 126 covers the base 121 and has a side plate 1261, which has an air inlet frame 1261a and an air outlet frame 1261b. The air intake groove 1214 is formed by a recess in the second surface 1212 and is adjacent to the laser mounting area 1213. The air intake groove 1214 has an air intake port 1214a, which connects to the outside of the base 121 and corresponds to the air outlet port 1216a of the outer cover 126. The two side walls of the air intake groove 1214 penetrate through the light-transmitting window 1214b of the piezoelectric actuator 122 and communicate with the laser mounting area 1213. Therefore, the first surface 1211 of the base 121 is covered by the outer cover 126 and the second surface 1212 is covered by the drive circuit board 123, so that the air intake groove 1214 defines an air intake path. The air guide component bearing area 1215 is formed by a recess in the second surface 1212 and is connected to the air inlet groove 1214. A vent hole 1215a is passed through the bottom surface, and each of the four corners of the air guide component bearing area 1215 has a positioning protrusion 1215b. The aforementioned air outlet groove 1216 is provided with an air outlet 1216a, which is correspondingly provided with the air outlet frame opening 1261b of the outer cover 126. The venting groove 1216 includes a first section 1216b formed by the recess of the first surface 1211 into the vertical projection area of ​​the air guide component support area 1215, and a second section 1216c formed by hollowing out from the first surface 1211 to the second surface 1212. The first section 1216b and the second section 1216c are connected to form a step, and the first section 1216b of the venting groove 1216 communicates with the vent hole 1215a of the air guide component support area 1215, and the second section 1216c of the venting groove 1216 communicates with the vent outlet 1216a. Therefore, when the first surface 1211 of the base 121 is covered by the outer cover 126 and the second surface 1212 is covered by the drive circuit board 123, the venting groove 1216 and the drive circuit board 123 together define an venting path.

[0021] The aforementioned laser assembly 124 and particle sensor 125 are both mounted on the drive circuit board 123 and located within the base 121. To clearly illustrate the positions of the laser assembly 124 and particle sensor 125 relative to the base 121, the drive circuit board 123 is deliberately omitted. The laser assembly 124 is housed within the laser mounting area 1213 of the base 121, and the particle sensor 125 is housed within the air intake groove 1214 of the base 121 and aligned with the laser assembly 124. Furthermore, the laser assembly 124 corresponds to a light-transmitting window 1214b, through which the laser light emitted by the laser assembly 124 passes, illuminating the air intake groove 1214. The beam path emitted by the laser assembly 124 passes through the light-transmitting window 1214b and forms an orthogonal direction with the air intake groove 1214. The laser assembly 124 emits a beam of light through the light-transmitting window 1214b into the air intake groove 1214. The detection data in the gas in the air intake groove 1214 is illuminated. When the beam of light comes into contact with the gas, it will scatter and generate a projected light spot, so that the particle sensor 125 is positioned in its orthogonal direction and receives the projected light spot generated by the scattering to perform calculations to obtain the gas detection data.

[0022] The piezoelectric actuator 122 is housed in the square gas guide assembly support area 1215 of the base 121. Furthermore, the gas guide assembly support area 1215 communicates with the air inlet groove 1214. When the piezoelectric actuator 122 is actuated, gas is drawn from the air inlet groove 1214 into the piezoelectric actuator 122, and the gas is then supplied through the vent hole 1215a of the gas guide assembly support area 1215 into the air outlet groove 1216. The drive circuit board 123 is sealed on the second surface 1212 of the base 121. The laser assembly 124 is disposed on the drive circuit board 123 and electrically connected. The particle sensor 125 is also disposed on the drive circuit board 123 and electrically connected. When the outer cover 126 covers the base 121, the air outlet 1216a corresponds to the air inlet 1214a of the base 121, and the air outlet frame 1261b corresponds to the air outlet 1216a of the base 121.

[0023] The piezoelectric actuator 122 includes an air jet plate 1221, a cavity frame 1222, an actuator 1223, an insulating frame 1224, and a conductive frame 1225. The air jet plate 1221 is made of a flexible material and has a suspension plate 1221a and a hollow hole 1221b. The suspension plate 1221a is a sheet-like structure that bends and vibrates, and its shape and size correspond to the inner edge of the air-guiding component bearing area 1215. The hollow hole 1221b penetrates the center of the suspension plate 1221a to allow gas flow. In a preferred embodiment of the invention, the shape of the suspension plate 1221a can be square, graphic, elliptical, triangular, or polygonal.

[0024] The aforementioned cavity frame 1222 is stacked on the jet orifice plate 1221, and its appearance corresponds to that of the jet orifice plate 1221. An actuator 1223 is stacked on the cavity frame 1222, defining a resonant chamber 1226 between itself, the jet orifice plate 1221, and the suspension plate 1221a. An insulating frame 1224 is stacked on the actuator 1223, and its appearance is similar to that of the cavity frame 1222. A conductive frame 1225 is stacked on the insulating frame 1224, and its appearance is similar to that of the insulating frame 1224. The conductive frame 1225 has a conductive pin 1225a and a conductive electrode 1225b extending outward from the outer edge of the conductive pin 1225a, and the conductive electrode 1225b extending inward from the inner edge of the conductive frame 1225. Furthermore, the actuator 1223 further includes a piezoelectric carrier plate 1223a, an adjusting resonant plate 1223b, and a piezoelectric plate 1223c. In this embodiment, a piezoelectric carrier plate 1223a is stacked on the cavity frame 1222. An adjustment resonance plate 1223b is stacked on the piezoelectric carrier plate 1223a. A piezoelectric plate 1223c is stacked on the adjustment resonance plate 1223b. The adjustment resonance plate 1223b and the piezoelectric plate 1223c are housed within an insulating frame 1224. The piezoelectric plate 1223c is electrically connected to the conductive plate 1223c by the conductive electrode 1225b of the conductive frame 1225. In a preferred embodiment of the present invention, both the piezoelectric carrier plate 1223a and the adjustment resonance plate 1223b are made of conductive materials. The piezoelectric carrier plate 1223a has a piezoelectric pin 1223d, which is connected to the drive circuit (not shown) on the drive circuit board 123 via a conductive pin 1225a to receive drive signals (which may be drive frequency and drive voltage). The drive signal forms a circuit through the piezoelectric pin 1223d, the piezoelectric carrier plate 1223a, the resonant adjustment plate 1223b, the piezoelectric plate 1223c, the conductive electrode 1225b, the conductive frame 1225, and the conductive pin 1225a. An insulating frame 1224 isolates the conductive frame 1225 from the actuator 1223 to prevent short circuits, allowing the drive signal to be transmitted to the piezoelectric plate 1223c. After receiving the drive signal, the piezoelectric plate 1223c deforms due to the piezoelectric effect, further driving the piezoelectric carrier plate 1223a and the resonant adjustment plate 1223b to produce reciprocating bending vibrations.

[0025] To further explain, the adjusting resonant plate 1223b is located between the piezoelectric plate 1223c and the piezoelectric carrier plate 1223a, acting as a buffer between the two, and can adjust the vibration frequency of the piezoelectric carrier plate 1223a. Basically, the thickness of the adjusting resonant plate 1223b is greater than that of the piezoelectric carrier plate 1223a, and the vibration frequency of the actuator 1223 is adjusted by changing the thickness of the adjusting resonant plate 1223b.

[0026] Please refer to Figures 7A, 7B, 8A, 8B, and 9A. The jet nozzle 1221, cavity frame 1222, actuator 1223, insulating frame 1224, and conductive frame 1225 are sequentially stacked and positioned within the air-guiding assembly support area 1215. This causes the piezoelectric actuator 122 to be positioned within the air-guiding assembly support area 1215. The piezoelectric actuator 122 defines a gap 1221c between the suspension plate 1221a and the inner edge of the air-guiding assembly support area 1215, allowing gas flow. An airflow chamber 1227 is formed between the jet nozzle 1221 and the bottom surface of the air-guiding assembly support area 1215. The airflow chamber 1227 is connected to the resonant chamber 1226 between the actuator 1223, the jet orifice 1221, and the suspension plate 1221a through the hollow hole 1221b in the jet orifice 1221. By using the vibration frequency of the gas in the resonant chamber 1226 to make it close to the vibration frequency of the suspension plate 1221a, the resonant chamber 1226 and the suspension plate 1221a can generate a Helmholtz resonance effect, thereby improving the gas transmission efficiency. When the piezoelectric plate 1223c moves away from the bottom surface of the air guide assembly bearing area 1215, the piezoelectric plate 1223c drives the suspension plate 1221a of the jet nozzle plate 1221 to move away from the bottom surface of the air guide assembly bearing area 1215, causing the volume of the airflow chamber 1227 to expand rapidly, the internal pressure drops and a negative pressure is generated, which attracts the gas outside the piezoelectric actuator 122 to flow in through the gap 1221c, and enter the resonant chamber 1226 through the hollow hole 1221b, increasing the air pressure in the resonant chamber 1226 and thus generating a pressure gradient. When the piezoelectric plate 1223c drives the suspension plate 1221a of the jet nozzle plate 1221 to move toward the bottom surface of the air guide assembly bearing area 1215, the gas in the resonant chamber 1226 flows out rapidly through the hollow hole 1221b, compresses the gas in the airflow chamber 1227, and causes the converged gas to be ejected rapidly and in large quantities into the vent hole 1215a of the air guide assembly bearing area 1215 in an ideal gas state close to Bernoulli's law.

[0027] By repeating the actions shown in Figures 9B and 9C, the piezoelectric plate 1223c vibrates reciprocally. According to the principle of inertia, the gas pressure inside the resonant chamber 1226 after exhaust is lower than the equilibrium gas pressure, which guides the gas to re-enter the resonant chamber 1226. In this way, the vibration frequency of the gas in the resonant chamber 1226 is controlled to be similar to the vibration frequency of the piezoelectric plate 1223c, so as to generate the Helmholtz resonance effect and realize the high-speed and large-volume transmission of gas. The gas enters through the air inlet 1214a of the outer cover 126, enters the air inlet groove 1214 of the base 121 through the air inlet 1214a, and flows to the position of the particle sensor 125. Furthermore, the piezoelectric actuator 122 continuously drives the intake gas through the intake path, facilitating the rapid and stable flow of external gas. The gas passes above the particle sensor 125. At this time, the laser assembly 124 emits a beam of light through the light-transmitting window 1214b into the intake groove 1214. The intake groove 1214 passes above the particle sensor 125. When the beam of light from the particle sensor 125 irradiates the suspended particles in the gas, scattering and projection light spots are generated. The particle sensor 125 receives the projection light spots generated by the scattering and calculates to obtain information such as the particle size and concentration of the suspended particles contained in the gas. The gas above the particle sensor 125 is also continuously driven by the piezoelectric actuator 122 and guided into the vent 1215a of the air guide assembly bearing area 1215, and into the exhaust groove 1216. Finally, when the gas enters the outlet groove 1216, the gas is continuously supplied into the outlet groove 1216 by the piezoelectric actuator 122. Therefore, the gas in the outlet groove 1216 will be pushed and discharged to the outside through the outlet port 1216a and the outlet frame port 1261b.

[0028] The gas detector 1 of this invention can not only detect suspended particles in the gas, but also further detect the characteristics of the introduced gas, such as formaldehyde, ammonia, carbon monoxide, carbon dioxide, oxygen, ozone, etc. Therefore, the gas detector 1 of this invention further includes a gas sensor 127, which is positioned and electrically connected to the drive circuit board 123 and housed in the gas outlet groove 1216 to detect the characteristics of the introduced gas. The gas sensor 127 can be a volatile organic compound sensor to detect carbon dioxide or total volatile organic compound gas information; a formaldehyde sensor to detect formaldehyde gas information; a bacteria sensor to detect bacteria or fungi; a virus sensor to detect viruses; or a temperature and humidity sensor to detect gas temperature and humidity information.

[0029] Please also refer to Figure 2. The fan 21 of the aforementioned recessed fan filter unit is activated under control to guide air pollution through the filter assembly 22. The filter assembly 22 can be a filter with an MREV of 8 or higher (minimum filtration efficiency value), or a high-efficiency particulate air (HEPA) filter. It adsorbs chemical fumes, bacteria, dust particles, and pollen contained in the air pollution, thus achieving the effect of filtration and purification. It is worth noting that the HEPA filter used in this case is a high-efficiency particulate air (HEPA) filter. The filter assembly 22 has a dust holding capacity greater than 12000mg and can be further combined with physical or chemical materials to provide a sterilization effect on air pollution. The airflow path of the fan 21 is as shown by the arrow. The filter assembly 22 combines a chemical method of passing through a decomposition layer to sterilize and remove air pollution. The decomposition layer can be activated carbon 22a, which removes organic and inorganic substances from the air pollution, as well as colored and odorous substances. It is worth noting that the formaldehyde absorption capacity of the activated carbon 22a in this case is greater than 1500mg. The decomposition layer can be a chlorine dioxide cleaning agent 2. 2b. The inhibition rate of viruses, bacteria, fungi, influenza A virus, influenza B virus, enterovirus, and norovirus in air pollution reaches over 99%, helping to reduce cross-infection of viruses. The decomposition layer can be a herbal protective layer of ginkgo and Japanese sumac. 22c. It effectively resists allergies and destroys the surface proteins of influenza viruses (e.g., H1N1). The decomposition layer can be a silver ion layer. 22d. It inhibits viruses, bacteria, and fungi introduced into the air pollution. The decomposition layer can be a zeolite layer. 22e. It removes ammonia nitrogen, heavy metals, organic pollutants, E. coli, phenol, chloroform, and anionic surfactants.In some embodiments, the filter component 22 can also be combined with a light-irradiated chemical method to sterilize and remove air pollution. The light irradiation is a photocatalyst unit consisting of a photocatalyst 22f and an ultraviolet lamp 22g. When the photocatalyst 22f is irradiated by the ultraviolet lamp 22g, it can convert light energy into electrical energy, decompose harmful substances in the air pollution, and disinfect and sterilize to achieve a filtration and sterilization effect. It is worth noting that the power of the ultraviolet lamp 22g in this case is above 120mw. The light irradiation can be a photoplasma unit consisting of a nano-light tube 22h. When the air pollution is irradiated by the nano-light tube 22h, the oxygen and water molecules in the air pollution are decomposed into highly oxidizing photoplasma, forming an ion gas flow that destroys organic molecules, thereby removing volatile organic compounds (VOCs) from the air pollution. VOCs and other gas molecules are decomposed into water and carbon dioxide, achieving a filtration and sterilization effect. In some embodiments, the filter assembly 22 can also be combined with a decomposition unit to chemically remove air pollutants through sterilization. This decomposition unit can be a negative ion unit 22i, which causes positively charged particles in the introduced air pollutants to attach to negatively charged particles, achieving a filtration and sterilization effect. Alternatively, the decomposition unit can be a plasma ion unit 22j, where plasma ions ionize oxygen and water molecules in the air pollutants to generate cations (H+) and anions (O2-). The substances with water molecules attached to the ions adhere to the surface of viruses and bacteria, and under the action of a chemical reaction, they are converted into highly oxidizing reactive oxygen species (hydroxyl, OH groups), thereby removing hydrogen from the surface proteins of viruses and bacteria, oxidizing and decomposing them, thus achieving a filtration and sterilization effect on the introduced air pollutants.

[0030] In summary, this invention provides a wall-mounted fan-filter unit for near-zero air pollution detection and purification in indoor spaces. It utilizes at least one gas detector internally. The design incorporates at least one fan, at least one filter assembly, a drive controller, and a flow channel, eliminating the need for piping. The flow channel has a recirculation return air inlet connecting to the indoor space and a filter duct connecting to the indoor space. The fan and filter assembly are housed within the filter duct, and the gas detector is electrically connected to the drive controller, forming an intelligent linkage system with the cloud computing service device of the indoor air purification network system. The gas detector receives a control command from the cloud computing service device of the indoor air purification network system via IoT communication, controlling the drive controller to activate the fan, drawing air pollution from the indoor space through the recirculation return air inlet into the flow channel. The airflow channel passes through the filter duct, where the air is filtered and purified by the filter components before being introduced into the indoor space. The airflow channel and the filter duct are arranged in a longitudinal parallel and isolated manner, repeatedly circulating and filtering the air pollution in the indoor space. This effectively suppresses the backflow effect of the gas, achieving real-time detection and purification of air pollution to a cleanroom level approaching zero. At the same time, the intelligent linkage system can compare the air pollution in the indoor space with the ambient air quality and control the airflow fan in real time to adjust the airflow volume according to the air quality. This effectively regulates the energy-saving benefits of the embedded fan filter unit and achieves near-zero noise levels, reaching the ultimate balance of energy saving and environmental protection, making it highly valuable for industrial applications.

[0031] A: Indoor space B: Outdoor areas C1: Air intake port C2: Exhaust port 1: Gas detector 11: Control circuit board 12: Gas detection unit 121: Base 1211: First Surface 1212: Second Surface 1213: Laser Settings Area 1214: Intake Groove 1214a: Air intake port 1214b: Light-transmitting window 1215: Air guide assembly bearing area 1215a: Vent 1215b: Positioning bump 1216: Vent groove 1216a: Vent 1216b: First interval 1216c: Second interval 122: Piezoelectric actuator 1221: Jet nozzle plate 1221a: Suspension tablets 1221b: Hollow cavity 1221c: Gap 1222: Cavity Frame 1223: Actuator 1223a: Piezoelectric carrier plate 1223b: Adjust the resonant plate 1223c: Piezoelectric plate 1223d: Piezoelectric pin 1224: Insulating Frame 1225: Conductive frame 1225a: Conductive pin 1225b: Conductive electrode 1226: Resonance Chamber 1227: Airflow Chamber 123: Driver circuit board 124: Laser Components 125: Particle Sensor 126: Outer cover 1261: Side panel 1261a: Air intake frame 1261b: Air vent 127: Gas Sensor 13: Microprocessor 14:Communicator 2: Gas exchange unit 21: Air guide fan 22: Filtering Components 22a: Activated carbon 22b: Cleansing agent of chlorine dioxide 22c: Herbal protective layer of ginkgo and sumac. 22d: Silver ions 22e: Zeolite 22f: Photocatalyst 22g: Ultraviolet lamp 22h: Nanotube 22i: Negative Ion Unit 22j: Plasma Ion Unit 23: Drive Controller 24: Flow diversion channel 24a: Recirculating air inlet 24b: Filter duct 3: Networked cloud computing service device 4: Mounted gas exchange device 5: Air Purifier 6: Exhaust system 7: Smoke Exhaust System 8: Air conditioning unit 9: Vacuum cleaner 10: Dehumidifier

Claims

1. A wall-mounted fan and filter unit, applied to an indoor air purification network system, comprising: at least one gas detector for detecting air pollution information and gas temperature and humidity information in an indoor area; and a gas exchange unit, wall-mounted in the indoor area, comprising at least one fan, at least one filter assembly, a drive controller, and a flow channel, the flow channel having a recirculation return air inlet connecting to the indoor area and a filter duct connecting to the indoor area, wherein the recirculation return air inlet and the filter duct are arranged parallel to each other in the longitudinal direction and are isolated from each other, and the filter duct connects the at least one fan and the at least one filter assembly, and the at least one gas detector is electrically connected to the drive controller; The at least one gas detector sends a control command to the drive controller via IoT communication, causing the drive controller to start the operation of the at least one duct fan. This duct fan draws air pollution from the indoor area through the recirculation air inlet into the flow channel and through the filter duct. The air pollution is then filtered and purified by the at least one filter component before being introduced into the indoor space. This process repeatedly circulates and filters the air pollution in the indoor space, achieving real-time circulating filtration and purification. This effectively suppresses the backflow effect of gas and achieves a cleanliness level approaching zero air pollution, similar to a cleanroom.

2. The wall-mounted fan filter unit as described in claim 1, wherein the air pollution information and the gas temperature and humidity information of the at least one gas detector are transmitted via Internet of Things (IoT) communication to a networked cloud computing service device of the indoor air purification network mechanism system. The networked cloud computing service device stores the air pollution information and the gas temperature and humidity information of the indoor area and an outdoor area to form an air pollution big data database, and intelligently selects and sends the control command to the at least one gas detector based on the intelligent calculation and comparison of the air pollution big data database, so as to control the drive controller to start the operation of the at least one fan.

3. The wall-mounted fan filter unit as described in claim 1, wherein the at least one filter element is a filter with an MREV (Minimum Filtration Efficiency Value) of 8 or higher.

4. The wall-mounted fan filter unit as described in claim 1, wherein the at least one filter element is a high-efficiency particulate air (HEPA) filter, wherein the HEPA filter is HEPA 10 or higher and has a dust holding capacity of more than 12,000 mg.

5. The mounted fan filter unit as described in claim 1, wherein the at least one filter element incorporates a chemical method of removing air pollution by means of a permeation coating of a decomposition layer.

6. The wall-mounted fan filter unit as described in claim 5, wherein the decomposition layer is activated carbon, and the activated carbon has a formaldehyde absorption capacity of more than 1500 mg.

7. The wall-mounted fan filter unit as described in claim 5, wherein the decomposition layer is a chlorine dioxide cleaning agent.

8. The wall-mounted fan filter unit as described in claim 5, wherein the decomposition layer is a herbal protective layer of ginkgo and sumac.

9. The wall-mounted fan filter unit as described in claim 5, wherein the decomposition layer is a silver ion layer.

10. The mounted fan filter unit as described in claim 5, wherein the decomposition layer is a zeolite.

11. The wall-mounted fan filter unit as described in claim 1, wherein the at least one filter element is used in conjunction with a photochemical method to sterilize and remove the air pollution.

12. The wall-mounted fan filter unit as described in claim 11, wherein the light irradiation is a photocatalyst unit consisting of a photocatalyst and an ultraviolet lamp.

13. The wall-mounted fan filter unit as described in claim 12, wherein the ultraviolet lamp has a power of 120mw or more.

14. The mounted fan filter unit as described in claim 11, wherein the light irradiation is a photoplasma unit of a nanotube.

15. The mounted fan filter unit as described in claim 1, wherein the at least one filter element, in conjunction with a decomposition unit, chemically removes the air pollutants by sterilization.

16. The wall-mounted fan filter unit as described in claim 15, wherein the decomposition unit is a negative ion unit.

17. The mounted fan filter unit as described in claim 15, wherein the decomposition unit is a plasma ionization unit.

18. The wall-mounted fan filter unit as described in claim 1, wherein the indoor area requires a cleanroom cleanliness level of ZAPClean room 1 to 12.

Images