Embedded fan filter unit

Abstract

To provide an embedded fan filter unit applied to an indoor air cleaning network control system.SOLUTION: An embedded fan filter unit, comprising a gas detector and a gas exchange body, wherein the gas detector is configured to detect air pollution information and gas temperature and humidity information, the gas exchange body is embedded in an indoor space and comprises a guide fan, a filter unit, a drive controller and an air guide channel, the air guide channel and a filtering air duct are arranged in parallel and spaced apart from each other in a transverse direction, the guide fan and the filter unit are arranged below the filtering air duct, and the gas detector is electrically connected to the drive controller. The gas detector controls the induction fan and the ventilation fan to operate through the Internet-of-Things communication, so that the air pollution in the indoor space enters the air guide channel from the circulation return port, passes through the filtering air path to be filtered, and then is introduced into the indoor space again, thereby performing circulation filtering, effectively suppressing the backflow effect of the gas, and achieving the purpose of real-time air pollution purification.SELECTED DRAWING: Figure 1A

Description

[Technical Field]

[0001] The present invention relates to a built-in fan filter unit, and more particularly to a built-in fan filter unit used for detecting and completely purifying air pollution in indoor spaces. [Background technology]

[0002] Suspended particulate matter (Suspended Particulate Matter) refers to solid particles or liquid droplets contained in air. Their extremely small size allows them to easily pass through the nasal hairs in the nasal passages and enter the lungs, causing pulmonary inflammation, asthma, and cardiovascular disease. If other pollutants are present in Suspended Particulate Matter, the harm to the respiratory system becomes even more serious. In recent years, air pollution has become a serious problem, with particularly high concentrations of fine particulate matter (e.g., PM2.5). Therefore, monitoring the concentration of Suspended Particulate Matter in the air has become an important issue. However, because air flows unstably depending on wind direction and speed, and most air quality monitoring stations currently used to detect Suspended Particulate Matter are fixed-point installations, it is virtually impossible to determine the concentration of Suspended Particulate Matter in the vicinity of a specific location.

[0003] In addition, modern people are becoming increasingly concerned about the air quality in their living environments. For example, exposure to gases such as carbon monoxide, carbon dioxide, volatile organic compounds (VOCs), PM2.5, nitrogen monoxide, sulfur monoxide, and the fine particles contained in these gases can all affect human health and, in severe cases, even be life-threatening. Therefore, environmental air quality is a major concern in every country, and how to detect air quality and avoid or escape areas with poor air quality is currently a major issue.

[0004] Gas sensors can be used to detect ambient gases as a way to check the quality of the air. If the detection information can be provided in real time to warn people in the environment, allowing them to take immediate precautions or evacuate, and avoid the impact and damage to human health caused by environmental gases, then using gas sensors to detect ambient gases can be a very useful application.

[0005] Indoor air quality is difficult to grasp, and besides outdoor air quality, indoor air conditioning conditions and pollution sources are also major factors that affect indoor air quality. If indoor air pollution sources in various locations can be detected intelligently and quickly, indoor air pollution can be effectively removed to create a clean gas state that is safe to breathe, and indoor air quality can be monitored in real time anytime and anywhere.

[0006] Of course, for indoor spaces, if the concentration of suspended particulate matter in the air can be strictly controlled according to "clean room" standards, the introduction, generation, and retention of fine particles can be avoided as much as possible, and the temperature and humidity can be controlled within the required range, the clean room requirements for an indoor space that is safe to breathe can be achieved.

[0007] In view of these circumstances, the present invention provides a built-in fan filter unit for detecting indoor air quality in indoor spaces and solving air pollution problems, thereby making the indoor space conform to the cleanliness requirements of clean rooms and avoiding the impact and damage to human health caused by gases in the environment, which is the main objective of the present invention. Summary of the Invention [Problem to be solved by the invention]

[0008] The primary objective of the present invention is to provide a built-in fan filter unit for detecting and completely purifying air pollution in indoor spaces. The built-in fan filter unit includes at least one gas detector, at least one induction fan, at least one filter unit, a drive controller, and an air duct, eliminating the need for piping. The air duct has a circulation return port communicating with the indoor space and a filtered air duct communicating with the indoor space. The induction fan and filter unit are located below the filtered air duct. The gas detector is electrically connected to the drive controller and forms a smart interlocking system with a network-connected cloud computing service device of the indoor air purification network control system. In this case, the gas detector receives control commands from the network-connected cloud computing service device of the indoor air purification network control system via Internet of Things communication and drives the drive controller to operate the induction fan and ventilation fan. This allows indoor air pollution to enter the air induction passage through the circulation return port, pass through the filtering air passage, and be filtered and purified by the filter unit before being re-introduced into the indoor space. This repeated circulation and filtering of indoor air pollution effectively suppresses the backflow effect of gas, detects and completely purifies air pollution in real time, and achieves cleanroom-level cleanliness. At the same time, the detected indoor air pollution is compared with the ambient air quality through the smart interlocking system, and the induction fan is controlled in real time to adjust the induction air volume according to the air quality. This effectively adjusts the energy efficiency of the built-in fan filter unit and the standard for zero induction air volume noise, achieving the ultimate balance of energy and power savings for environmental protection. [Means for solving the problem]

[0009] To achieve the above object, the present invention provides a built-in fan filter unit applicable to an indoor air purification network control system, comprising at least one gas detector and a gas exchange body, the at least one gas detector detecting air pollution information and gas temperature and humidity information in an indoor space, the indoor space being provided with at least one air intake port and at least one air exhaust port, the gas exchange body being built-in in the indoor space and including at least one induction fan, at least one filter unit, a drive controller, and an air guide passage, the air guide passage having a circulation return port communicating with the indoor space and a filtered air passage communicating with the indoor space, the induction fan and the filter unit being disposed below the filtered air passage, and the gas exchange body being embedded in the indoor space and including at least one induction fan, at least one filter unit, a drive controller, and an air guide passage, the air guide passage having a circulation return port communicating with the indoor space and a filtered air passage communicating with the indoor space, the induction fan and the filter unit being disposed below the filtered air passage, The detector is electrically connected to the drive controller, and the gas detector sends a control command to the drive controller via Internet of Things communication, thereby controlling the drive controller to start the operation of the induction fan, causing the gas in the outdoor space to be introduced into the filtering air duct and filtered by the filter unit before entering the indoor space, and the gas in the indoor space to enter the filtering air duct again through the circulation return port, causing the air pollution to be circulated and filtered multiple times by the filter unit, and adjusting the temperature to ventilate, thereby achieving a clean room-level cleanliness treatment. [Brief explanation of the drawings]

[0010] [Figure 1A] 1 is a schematic diagram of a built-in fan filter unit of the present invention. [Figure 1B] FIG. 1 is a diagram showing an embodiment of the built-in fan filter unit of the present invention in use in an indoor space A. [Figure 2] FIG. 2 is a schematic diagram showing the assembly relationship of the filter units of the built-in fan filter unit of the present invention. [Figure 3A] 1 is a three-dimensional schematic view of the external appearance of a gas detector according to the present invention. [Figure 3B] FIG. 2 is a schematic three-dimensional external view of the gas detector of the present invention as viewed from another angle. [Figure 3C]1 is a schematic view showing the appearance of a gas detector of the present invention in which a gas detection module is installed inside. [Figure 4A] 1 is a schematic diagram (1) of a three-dimensional assembly of the gas detection body of the present invention. FIG. [Figure 4B] 1 is a schematic diagram (II) of a three-dimensional assembly of the gas detection body of the present invention; [Figure 4C] 1 is a schematic exploded view of a gas detector according to the present invention; [Figure 5A] 1 is a schematic three-dimensional view of the base of the present invention (1); [Figure 5B] FIG. 2 is a schematic diagram of the base of the present invention; [Figure 6] 1 is a schematic diagram of the base of the present invention (III); [Figure 7A] FIG. 2 is a schematic three-dimensional view showing an exploded state of the piezoelectric actuator and the base of the present invention. [Figure 7B] 1 is a schematic three-dimensional view showing an assembled state of a piezoelectric actuator and a base according to the present invention; [Figure 8A] 1 is a schematic exploded view (1) of a piezoelectric actuator according to the present invention. FIG. [Figure 8B] FIG. 2 is a schematic exploded view (II) of the piezoelectric actuator of the present invention. [Figure 9A] 1A and 1B are cross-sectional views (1) for explaining the operation of the piezoelectric actuator of the present invention. [Figure 9B] 10A and 10B are cross-sectional views (2) for explaining the operation of the piezoelectric actuator of the present invention. [Figure 9C] 10 is a cross-sectional view (3) illustrating the operation of the piezoelectric actuator of the present invention. FIG. [Figure 10A] FIG. 1 is an assembled cross-sectional view of the gas detection body (1). [Figure 10B] FIG. 2 is an assembled cross-sectional view of the gas detection body (2). [Figure 10C] FIG. 3 is an assembled cross-sectional view of the gas detection body (3). [Figure 11] FIG. 2 is a signal transmission schematic diagram of the gas detector of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0011] The following detailed description will discuss in detail embodiments embodying the features and advantages of the present invention. It should be understood that the present invention may be modified in various ways in different embodiments without departing from the scope of the present invention, and that the description and drawings are illustrative in nature and are not intended to limit the present invention. 1A and 1B . The present invention provides an embedded fan filter unit (FFU) for use in an indoor air purification network control system. The FFU includes at least one gas detector 1 and a gas exchanger body 2. The at least one gas detector 1 detects air pollution information and gas temperature and humidity information for indoor space A. The gas exchanger body 2 is embedded in indoor space A and includes at least one induction fan 21, at least one filter unit 22, a drive controller 23, and an air guide passage 24. The air guide passage 24 has a circulation return port 24a communicating with indoor space A and a filtered air passage 24b communicating with indoor space A. The induction fan 21 and the filter unit 22 are disposed below the filtered air passage 24b. The gas detector 1 is electrically connected to the drive controller 23. The gas detector 1 transmits a control command to the drive controller 23 via Internet of Things (IoT) communication, thereby controlling the drive controller 23 to start the operation of the induction fan 21. As a result, air pollution in indoor space A enters the air guide passage 24 through the circulation return port 24a and passes through the filtered air duct 24b, where it is filtered and purified by the filter unit 22 before being introduced back into indoor space A. The air guide passage 24 and the filtered air duct 24b are arranged parallel and separated in the horizontal direction, while the circulation return port 24a and the filtered air duct 24b are arranged parallel and separated in the vertical direction. By circulating and filtering the air pollution in indoor space A, real-time circulation, filtering and purification processing can be achieved, the backflow effect of gas can be efficiently suppressed, and complete purification of air pollution can be achieved with clean room-class cleanliness.

[0012] In particular, the embedded fan filter unit is used for detecting and completely purifying air pollution in indoor space A. It is embedded in indoor space A without installing any piping, and the air guide passage 24 and filtered air passage 24b are arranged horizontally and parallel to each other, efficiently suppressing the backflow effect of the circulating filtered gas and achieving clean room treatment for completely purifying air pollution. The clean room class required for indoor space A is ZAPCleanroom1 to 12.

[0013] Referring to Figure 1B, the present invention provides an embedded fan filter unit applicable to an indoor air purification network control system, which includes a plurality of gas detectors 1, at least one gas molecule control hardware device, and a network-connected cloud computing service device 3. The plurality of gas detectors 1 are disposed in an indoor space A and an outdoor space B to detect air pollution information and gas temperature and humidity information. The indoor space A is provided with at least one intake port C1 and at least one exhaust port C2. At least one gas molecule control hardware device includes at least one built-in fan filter unit, at least one built-in ventilation device 4 corresponding to the intake port C1, at least one air purifier 5, at least one exhaust device 6 corresponding to the exhaust port C2, at least one smoke extractor system 7 corresponding to the exhaust port C2, at least one air conditioner 8, at least one vacuum cleaner 9, and at least one dehumidifier 10, which are installed in the indoor space A, and each gas molecule control hardware device has at least one gas detector 1, at least one induction fan 21, at least one filter unit 22, and at least one drive controller 23 arranged therein, and the gas detector 1 is electrically connected to the drive controller 23. In addition, the network-connected cloud computing service device 3 receives and stores the air pollution information and gas temperature and humidity information of indoor space A and outdoor space B detected by the gas detector 1 via Internet of Things communication to form an air pollution big data database, and intelligently selects and sends a control command to the gas detector 1 to drive and control the drive controller 23 to start the operation of the induction fan 21. In this way, it is possible to perform a thorough purification clean room treatment such as ventilation, temperature and humidity control of the indoor space A, and guiding air pollution through the filter unit 22 multiple times, and the gas detector 1 transmits the air pollution information and gas temperature and humidity information of the indoor space A to the outside.

[0014] The gas detector 1 is disposed in an indoor space A and an outdoor space B to detect air pollution information and gas temperature and humidity information and output the information via Internet of Things (IoT) communication. In particular, the gas detector 1 includes a built-in gas detection module. As shown in FIGS. 3A and 3B, the gas detector 1 may have an external power terminal and be configured to initiate air pollution detection by directly plugging the external power terminal into the power interface of the indoor space A. Alternatively, as shown in FIG. 3C, the gas detector 1 may not have an external power terminal and may be configured as a gas detection module that is directly and electrically connected to a gas molecule control hardware device (such as a built-in fan filter unit, a built-in ventilation device 4, an air purifier 5, an exhaust device 6, a smoke extractor system 7, an air conditioner 8, a vacuum cleaner 9, and a dehumidifier 10) and receives a control command to control the power supply of the gas molecule control hardware device to start the operation of the induction fan 21.

[0015] The Internet of Things communication refers to a collective network of various connected devices, and technology that supports communication between the devices and the cloud, and between devices. This Internet of Things communication may be wired communication, and may be wired connection with the network-connected cloud computing service device 3. The Internet of Things communication may be wireless communication, and may be wireless connection and communication with the network-connected cloud computing service device 3. The wireless communication may be any one of a Wi-Fi module, a Bluetooth module, a radio frequency identification module, and a short-range communication module.

[0016] In particular, the air pollution refers to one or a combination of suspended particulate matter, carbon monoxide, carbon dioxide, ozone, sulfur dioxide, nitrogen dioxide, lead, total volatile organic compounds, formaldehyde, bacteria, fungi, viruses.

[0017] Each gas detector 1 monitors the air quality of indoor space A anytime and anywhere, transmits the detected air pollution information of indoor space A to the air pollution big data database of the network-connected cloud computing service device 3, and intelligently compares and matches it with the environmental air quality status to control the induction fans 21 of the gas molecule control hardware devices located in each area in real time and adjust the induction air volume according to the air quality, thereby effectively controlling the energy-saving efficiency of the operation of the gas molecule control hardware devices.

[0018] To understand specific embodiments of the built-in fan filter unit provided by the present invention, the structure of the gas detection module of the gas detector 1 of the present invention will be described in detail below. See FIGS. 3A to 11. The gas detection module includes a control circuit board 11, a gas detection main body 12, a microprocessor 13, and a communicator 14. The gas detection main body 12, microprocessor 13, and communicator 14 are integrally packaged on the control circuit board 11 and electrically connected to each other. The microprocessor 13 and communicator 14 are also mounted on the control circuit board 11, and the microprocessor 13 controls the drive signal of the gas detection main body 12 to initiate the detection operation. In this manner, the gas detection main body 12 detects air pollution and outputs detection information. The microprocessor 13 receives and processes the detection information, and provides it to the communicator 14. The communicator 14 then transmits it to an external network-connected cloud computing service device 3 via Internet of Things (IoT) communication.

[0019] 4A to 9A, the gas detection main body 12 includes a base 121, a piezoelectric actuator 122, a drive circuit board 123, a laser member 124, a particle sensor 125, and an outer cover 126. The base 121 includes a first surface 1211, a second surface 1212, a laser mounting area 1213, a gas inlet groove 1214, a gas guide assembly mounting area 1215, and a gas outlet groove 1216. The first surface 1211 and the second surface 1212 are two surfaces facing each other. The laser mounting area 1213 is formed by cutting out from the first surface 1211 toward the second surface 1212. The outer cover 126 covers the base 121 and includes a side panel 1261. The side panel 1261 includes an intake frame opening 1261a and an exhaust frame opening 1261b. The gas inlet groove 1214 is recessed from the second surface 1212 and is adjacent to the laser installation area 1213. The gas inlet groove 1214 is provided with an intake port 1214a that communicates with the outside of the base 121 and corresponds to the intake frame port 1261a of the outer cover 126. Both side walls of the gas inlet groove 1214 have light-transmitting windows 1214b that penetrate through and communicate with the laser installation 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, thereby defining an intake path by the gas inlet groove 1214. Here, the gas guide assembly mounting area 1215 has a recessed second surface 1212 that communicates with the gas inlet groove 1214, a vent hole 1215a formed through the bottom surface, and positioning protrusions 1215b provided at each of the four corners of the gas guide assembly mounting area 1215. The gas exhaust groove 1216 is provided with an exhaust port 1216a, which is provided to correspond to the exhaust frame port 1261b of the outer cover 126.The gas discharge groove 1216 includes a first section 1216b formed by recessing a portion of the first surface 1211 corresponding to the vertical projection area of ​​the gas guide assembly mounting area 1215, and a second section 1216c formed by cutting out from the first surface 1211 to the second surface 1212 in an area offset from the vertical projection area of ​​the gas guide assembly mounting area 1215. The first section 1216b and the second section 1216c are connected to form a step, and the first section 1216b of the gas discharge groove 1216 communicates with the vent hole 1215a of the gas guide assembly mounting area 1215, and the second section 1216c of the gas discharge groove 1216 communicates with the exhaust port 1216a. Therefore, when the first surface 1211 of the base 121 is covered with the outer cover 126 and the second surface 1212 is covered with the drive circuit board 123, the gas discharge groove 1216 and the drive circuit board 123 cooperate to define an exhaust path.

[0020] The laser member 124 and particle sensor 125 are both provided on a drive circuit board 123 and located within the base 121. The drive circuit board 123 has been intentionally omitted to clearly explain the positional relationship between the laser member 124, particle sensor 125, and base 121. The laser member 124 is housed within a laser installation area 1213 of the base 121, and the particle sensor 125 is housed within a gas inlet groove 1214 of the base 121 and is aligned with the laser member 124. The laser member 124 also corresponds to a light-transmitting window 1214b, which transmits the laser light emitted from the laser member 124, allowing the laser light to be irradiated onto the gas inlet groove 1214. The beam path emitted from the laser member 124 passes through the light-transmitting window 1214b and is perpendicular to the gas inlet groove 1214. The beam emitted from the laser member 124 passes through the light-transmitting window 1214b and enters the gas inlet groove 1214, irradiating the gas in the gas inlet groove 1214. When the beam comes into contact with the gas, it scatters and generates a projected light spot. Since the particle sensor 125 is positioned perpendicular to this, it receives and calculates the scattered projected light spot, thereby obtaining gas detection data.

[0021] The piezoelectric actuator 122 is accommodated in a square-shaped gas guide assembly mounting area 1215 of the base 121. The gas guide assembly mounting area 1215 is connected to a gas inlet groove 1214. When the piezoelectric actuator 122 is operated, gas in the gas inlet groove 1214 is drawn into the piezoelectric actuator 122, passes through a vent hole 1215a in the gas guide assembly mounting area 1215, and is discharged to a gas exhaust groove 1216. The driving circuit board 123 covers the second surface 1212 of the base 121. The laser member 124 is mounted on and electrically connected to the driving circuit board 123. The particle sensor 125 is also mounted on and electrically connected to the driving circuit board 123. When the outer cover 126 covers the base 121, the intake frame 1261a corresponds to the intake port 1214a of the base 121, and the exhaust frame 1261b corresponds to the exhaust port 1216a of the base 121.

[0022] The piezoelectric actuator 122 includes a nozzle plate 1221, a chamber frame 1222, an actuator element 1223, an insulating frame 1224, and a conductive frame 1225. The nozzle plate 1221 is made of a flexible material and includes a suspension plate 1221a and a hollow hole 1221b. The suspension plate 1221a is a sheet-like structure that vibrates in a curved manner, and its shape and size correspond to the inner edge of the gas guide assembly mounting area 1215. The hollow hole 1221b passes through the center of the suspension plate 1221a to allow gas to pass through. In a preferred embodiment of the present invention, the shape of the suspension plate 1221a may be one of a rectangle, a circle, an ellipse, a triangle, and a polygon.

[0023] The chamber frame 1222 is stacked on the blast hole plate 1221, and its appearance corresponds to that of the blast hole plate 1221. The actuator element 1223 is stacked on the chamber frame 1222, and defines a resonance chamber 1226 between the chamber frame 1222 and the suspension plate 1221a. The insulating frame 1224 is stacked on the actuator element 1223, and its appearance is similar to that of the chamber frame 1222. The 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, with the conductive pin 1225a extending outward from the outer edge of the conductive frame 1225 and the conductive electrode 1225b extending inward from the inner edge of the conductive frame 1225. The actuator element 1223 includes a piezoelectric carrier plate 1223a, a resonance adjustment plate 1223b, and a piezoelectric plate 1223c. The piezoelectric carrier plate 1223a is stacked on the chamber frame 1222. The resonance adjustment plate 1223b is stacked on the piezoelectric carrier plate 1223a. The piezoelectric plate 1223c is stacked on the resonance adjustment plate 1223b. The resonance adjustment plate 1223b and the piezoelectric plate 1223c are housed in an insulating frame 1224. The conductive electrode 1225b of the conductive frame 1225 is electrically connected to the piezoelectric plate 1223c. In a preferred embodiment of the present invention, the piezoelectric carrier plate 1223a and the resonance adjustment plate 1223b are both made of conductive materials. The piezoelectric carrier plate 1223a has a piezoelectric pin 1223d, and the piezoelectric pin 1223d and the conductive pin 1225a are connected to a drive circuit (not shown) on the drive circuit board 123 to receive a drive signal (which may be a drive frequency and drive voltage), forming a drive signal transmission path from the piezoelectric pin 1223d, the piezoelectric carrier plate 1223a, the resonance adjustment plate 1223b, the piezoelectric plate 1223c, the conductive electrode 1225b, the conductive frame 1225 and the conductive pin 1225a. The conductive frame 1225 and the actuator element 1223 are insulated by the insulating frame 1224 to avoid the occurrence of a short circuit phenomenon and allow the drive signal to be transmitted to the piezoelectric plate 1223c.When the piezoelectric plate 1223c receives the drive signal, it deforms due to the piezoelectric effect, and further drives the piezoelectric carrier plate 1223a and the resonance adjustment plate 1223b to generate reciprocating bending vibrations.

[0024] More specifically, the resonance adjusting plate 1223b is located between the piezoelectric plate 1223c and the piezoelectric carrier plate 1223a, functions as a buffer between them, and can adjust the vibration frequency of the piezoelectric carrier plate 1223a. Basically, the thickness of the resonance adjusting plate 1223b is thicker than that of the piezoelectric carrier plate 1223a, and the vibration frequency of the actuator element 1223 can be adjusted by changing the thickness of the resonance adjusting plate 1223b.

[0025] 7A, 7B, 8A, 8B, and 9A. The blower plate 1221, the chamber frame 1222, the actuator element 1223, the insulating frame 1224, and the conductive frame 1225 are stacked in this order and positioned in the gas guide assembly mounting area 1215, thereby positioning the piezoelectric actuator 122 in the gas guide assembly mounting area 1215. A gap 1221c for allowing gas to pass is defined between the suspension plate 1221a of the piezoelectric actuator 122 and the inner edge of the gas guide assembly mounting area 1215. A fluid chamber 1227 is defined between the blower plate 1221 and the bottom surface of the gas guide assembly mounting area 1215. The fluid chamber 1227 is connected to the resonance chamber 1226 between the actuator element 1223, the chamber frame 1222, and the suspension plate 1221a via the hollow hole 1221b of the nozzle plate 1221. By bringing the vibration frequency of the gas in the resonance chamber 1226 closer to the vibration frequency of the suspension plate 1221a, the Helmholtz resonance effect is generated between the resonance chamber 1226 and the suspension plate 1221a, improving the gas transport efficiency. When the piezoelectric plate 1223c moves away from the bottom surface of the gas guide assembly mounting area 1215, the suspension plate 1221a of the nozzle plate 1221 is moved away from the bottom surface of the gas guide assembly mounting area 1215 by the piezoelectric plate 1223c, the volume of the fluid chamber 1227 expands suddenly, the internal pressure decreases to negative pressure, and gas outside the piezoelectric actuator 122 is sucked in and flows in through the gap 1221c and enters the resonance chamber 1226 through the hollow hole 1221b, the air pressure inside the resonance chamber 1226 increases, and a pressure gradient is generated. When the suspension plate 1221a of the nozzle plate 1221 is moved toward the bottom surface of the gas guide assembly mounting area 1215 by the piezoelectric plate 1223c, the gas in the resonance chamber 1226 rapidly flows out through the hollow hole 1221b, pushing out the gas in the fluid chamber 1227, and the combined gas is rapidly and massively ejected in a state close to the ideal gas according to Bernoulli's theorem, and is introduced into the ventilation hole 1215a of the gas guide assembly mounting area 1215.

[0026] 9B and 9C, the piezoelectric plate 1223c vibrates back and forth. Due to the principle of inertia, the air pressure inside the resonance chamber 1226 after exhausting the gas drops below the equilibrium pressure, causing the gas to re-enter the resonance chamber 1226. By controlling the vibration frequency of the gas inside the resonance chamber 1226 to approach the vibration frequency of the piezoelectric plate 1223c, Helmholtz resonance is generated, achieving high-speed, large-volume gas transport. All gas enters through the intake frame 1261a of the outer cover 126, passes through the intake port 1214a, enters the gas inlet groove 1214 of the base 121, and flows to the position of the particle sensor 125. The piezoelectric actuator 122 continues to operate, sucking in gas from the intake path, which is advantageous for rapid and stable introduction and distribution of external gas. The gas passes above the particle sensor 125. At this time, the beam from the laser member 124 passes through the light transmission window 1214b, enters the gas inlet groove 1214, and passes above the particle sensor 125. When the beam from the laser member 124 is irradiated onto suspended particulate matter in the gas, scattering and projected light spots occur. The particle sensor 125 receives the projected light spots generated by scattering and performs calculations to obtain information on the particle size and concentration of suspended particulate matter contained in the gas. The gas above the particle sensor 125 is also continuously introduced into the vent hole 1215a of the gas guide assembly mounting area 1215 by the driving of the piezoelectric actuator 122, and enters the gas exhaust groove 1216. Finally, after the gas enters the gas exhaust groove 1216, the piezoelectric actuator 122 continues to send the gas into the gas exhaust groove 1216, so that the gas in the gas exhaust groove 1216 is pushed out and discharged to the outside through the exhaust port 1216a and the exhaust frame port 1261b.

[0027] The gas detector 1 of the present invention can detect not only suspended particulate matter in gas but also the characteristics of introduced gases, such as formaldehyde, ammonia gas, carbon monoxide, carbon dioxide, oxygen, and ozone. Therefore, the gas detector 1 of the present invention further includes a gas sensor 127 positioned on and electrically connected to the drive circuit board 123, housed in the gas exhaust groove 1216, and configured to detect the characteristics of the introduced gas. The gas sensor 127 may be a volatile organic compound sensor that detects information on carbon dioxide or total volatile organic compound gases. The gas sensor 127 may be a formaldehyde sensor that detects information on formaldehyde gas. The gas sensor 127 may be a bacteria sensor that detects information on bacteria or fungi. The gas sensor 127 may be a virus sensor that detects information on virus gases. The gas sensor 127 may be a temperature and humidity sensor that detects information on the temperature and humidity of the gas.

[0028] Referring again to FIG. 2, when the induction fan 21 of the built-in fan filter unit is driven, air pollution is guided to the filter unit 22 for filtration. The filter unit 22 may be a filter with a Minimum Efficiency Reporting Value (MREV) rating of 8 or higher, or a High Efficiency Particulate Air (HEPA) filter. It filters and purifies the introduced air pollution by adsorbing chemical fumes, bacteria, dust particles, and pollen contained in the air pollution. In particular, the HEPA filter in this embodiment is a HEPA rating of 10 or higher, with a dust collection capacity of over 12,000 mg. The filter unit 22 may further incorporate physical or chemical materials to provide a sterilizing effect on the air pollution passing through it. The airflow direction of the induction fan 21 is indicated by the arrow. A decomposition layer can be applied to the filter unit 22 to chemically sterilize and remove air pollution. The decomposition layer may be activated carbon 22a, which can remove organic and inorganic substances in the air pollution as well as colored and odorous substances. In particular, in this embodiment, the formaldehyde absorption capacity of activated carbon 22a exceeds 1500 mg. The decomposition layer may be a chlorine dioxide-containing purification element 22b, which inhibits viruses, bacteria, fungi, influenza A virus, influenza B virus, enterovirus, and norovirus in air pollution, with an inhibition rate of over 99%, helping to reduce cross-infection between viruses. The decomposition layer may be a herbal protective layer 22c extracted from ginkgo and Japanese white ash, which can effectively inhibit allergies and destroy the surface proteins of passing influenza viruses (e.g., H1N1). The decomposition layer may be silver ions 22d, which can inhibit viruses, bacteria, and fungi in introduced air pollution. The decomposition layer may be zeolite 22e, which can remove ammonia nitrogen, heavy metals, organic pollutants, E. coli, phenol, chloroform, and anionic surfactants. In some embodiments, the filter unit 22 may be combined with a light-emitting element that chemically sterilizes and removes air pollution.The light-emitting element is a photocatalytic unit consisting of a photocatalyst 22f and an ultraviolet lamp 22g. When the photocatalyst 22f is irradiated by the ultraviolet lamp 22g, it converts light energy into electrical energy, decomposing harmful substances in air pollution for disinfection and sterilization, thereby achieving a filtering and sterilization effect. In particular, in this embodiment, the output of the ultraviolet lamp 22g is 120mW or more. The light-emitting element may be an optical plasma unit consisting of a nano-light tube 22h. When the nano-light tube 22h irradiates the introduced air pollution, oxygen molecules and water molecules in the air pollution are decomposed into highly oxidizing optical plasma, forming an ion flow that destroys organic molecules. Gas molecules such as volatile formaldehyde, toluene, and volatile organic compounds (VOCs) contained in the air pollution are decomposed into water and carbon dioxide, thereby achieving a filtering and sterilization effect. In some embodiments, the filter unit 22 may be combined with a decomposition unit that sterilizes and removes air pollution by chemical means. The decomposition unit may be a negative ion unit 22i, which imparts a positive charge to the fine particles contained in the introduced air pollution and causes them to attach to the negative charges, thereby achieving a filtering and sterilizing effect on the introduced air pollution. The decomposition unit may be a plasma ion unit 22j, which ionizes oxygen molecules and water molecules contained in the air pollution with plasma ions to turn them into positive ions (H). + ) and anions (O 2- ) and the substance with water molecules attached around the ions attaches to the surface of viruses and bacteria, whereupon it is converted into highly oxidizing active oxygen (hydroxyl radical, OH group) through a chemical reaction, which steals hydrogen from the proteins on the surface of the viruses and bacteria and oxidizes and decomposes them, thereby achieving the filtering and sterilization effect of the introduced air pollution.

[0029] In light of the above, the present invention provides a built-in fan filter unit for detecting and completely purifying air pollution in indoor spaces. The built-in fan filter unit includes at least one gas detector, at least one induction fan, at least one filter unit, a drive controller, and an air duct, eliminating the need for piping. The air duct has a circulation return port communicating with the indoor space and a filtered air duct communicating with the indoor space. The induction fan and filter unit are located below the filtered air duct. The gas detector is electrically connected to the drive controller and forms a smart interlocking system with a network-connected cloud computing service device of the indoor air purification network control system. In this case, the gas detector receives control commands from the network-connected cloud computing service device of the indoor air purification network control system via Internet of Things communication and drives and controls the drive controller to operate the induction fan and ventilation fan. This allows indoor air pollution to enter the air intake duct through the circulation return port, pass through the filtering duct, and be filtered and purified by the filter unit before being re-introduced into the room. The air intake duct and filtering duct are arranged horizontally and parallel to each other, allowing the indoor air pollution to be repeatedly circulated and filtered, effectively suppressing the backflow effect and detecting and completely purifying air pollution in real time, achieving cleanroom-level cleanliness. At the same time, the detected indoor air pollution is compared with the ambient air quality through an intelligent interlocking system, which controls the induction fan in real time to adjust the induction air volume according to the air quality. This effectively adjusts the energy efficiency of the built-in fan filter unit and eliminates the induction air volume noise specification, achieving the ultimate balance of energy and power savings for environmental protection, and has extremely high industrial value. [Explanation of symbols]

[0030] A: Indoor space B: Outdoor space C1: Air intake C2: Exhaust port 1: Gas detector 11: Control circuit board 12: Gas detector body 121: Bass 1211: First surface 1212:Second surface 1213: Laser installation area 1214: Gas inlet groove 1214a: Air intake 1214b: Light-transmitting window 1215: Gas induction assembly mounting area 1215a: Ventilation hole 1215b: Positioning protrusion 1216: Gas exhaust groove 1216a:Exhaust port 1216b: First section 1216c: Second section 122: Piezoelectric actuator 1221:Furnace plate 1221a: Suspension plate 1221b: Hollow hole 1221c: void 1222: Chamber frame 1223: Actuator element 1223a: Piezoelectric carrier plate 1223b: Resonance adjustment plate 1223c: Piezoelectric plate 1223d: Piezoelectric pin 1224: Insulation frame 1225: Conductive frame 1225a: Conductive pin 1225b: Conductive electrode 1226:Resonance chamber 1227: Fluid chamber 123: Drive circuit board 124: Laser components 125: Particle sensor 126: Outer cover 1261: Side panel 1261a: Intake frame opening 1261b: Exhaust frame outlet 127: Gas sensor 13: Microprocessor 14:Communication device 2: Gas exchange body 21: Induction fan 22: Filter unit 22a:Activated carbon 22b: Cleaning elements containing chlorine dioxide 22c: Ginkgo and alder herb protective layer 22d: Silver ions 22e: Zeolite 22f: Photocatalyst 22g: UV lamp 22h: Nano light tube 22i: Negative ion unit 22j: Plasma ion unit 23: Drive controller 24: Air guide passage 24a: Circulation return port 24b: Filtration air duct 3: Network-connected cloud computing service device 4: Built-in ventilation system 5: Air purifier 6: Exhaust system 7: Smoke exhaust system 8:Air conditioner 9: Vacuum cleaner 10:Dehumidifier

Claims

1. An embedded fan filter unit applied to an indoor air purification network control system, The device includes at least one gas detector and a unit body, The at least one gas detector detects air pollution information and gas temperature and humidity information in an indoor space; the unit body is embedded in the indoor space and includes at least one induction fan, at least one filter unit, a drive controller, and an air guide passage, the air guide passage has a circulation return port communicating with the indoor space and a filtered air guide passage communicating with the indoor space, the air guide passage and the filtered air guide passage are arranged in parallel and separated in a horizontal direction, the at least one induction fan and the at least one filter unit are provided in the air guide passage, and the 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, thereby driving and controlling the drive controller to start the operation of the at least one induction fan, causing the air pollution in the indoor space to enter the air guide passage through the circulation return port and pass through the filtering air passage, and the air pollution is filtered and purified by the at least one filter unit before being introduced into the indoor space again, thereby realizing real-time circulation filtering and purification treatment by repeatedly circulating and filtering the air pollution in the indoor space, efficiently suppressing the gas backflow effect, and achieving clean room-class cleanliness treatment for complete air pollution purification.

2. 2. The built-in fan filter unit of claim 1, wherein the air pollution information and the gas temperature and humidity information of the at least one gas detector are transmitted to a network-connected cloud computing service device of the indoor air purification network control system via Internet of Things communication, and the network-connected cloud computing service device stores the air pollution information and the gas temperature and humidity information of the indoor space and the outdoor space to form an air pollution big data database, intelligently calculates and compares the air pollution information and the gas temperature and humidity information based on the air pollution big data database, and intelligently selects and sends the control command to the at least one gas detector to drive and control the drive controller to start the operation of the at least one induction fan.

3. 2. The built-in fan filter unit of claim 1, wherein the at least one filter unit is a filter of a Minimum Efficiency Reporting Value (MREV) class of 8 or higher.

4. 2. The built-in fan filter unit of claim 1, wherein the at least one filter unit is a high efficiency air filter (HEPA) class filter, the high efficiency air filter being a high efficiency air filter 10 or higher, and having a dust collection capacity of more than 12,000 mg.

5. 10. The built-in fan filter unit of claim 1, wherein a decomposition layer is applied onto the at least one filter unit to sterilize and remove the air contaminants by chemical means.

6. 6. The built-in fan filter unit of claim 5, wherein the decomposition layer is activated carbon, and the activated carbon has a formaldehyde absorption amount of more than 1500 mg, or the decomposition layer is a cleaning element containing chlorine dioxide.

7. 6. The built-in fan filter unit of claim 5, wherein the decomposition layer is a herbal protective layer of ginkgo and alder, silver ions, or zeolite.

8. 10. The built-in fan filter unit of claim 1, wherein the at least one filter unit is combined with a light-emitting element that sterilizes and removes the air contaminants by chemical means.

9. 9. The built-in fan filter unit according to claim 8, wherein the light emitting element is a photocatalytic unit of a photocatalyst and an ultraviolet lamp, and the output of the ultraviolet lamp is 120 mW or more.

10. 9. The recessed fan filter unit of claim 8, wherein the light-emitting element is a nano-light tube light plasma unit.

11. 2. The built-in fan filter unit according to claim 1, wherein the at least one filter unit is combined with a decomposition unit that sterilizes and removes the air contaminants by chemical means.

12. The built-in fan filter unit according to claim 11, wherein the decomposition unit is a negative ion unit or a plasma ion unit.

13. The built-in fan filter unit according to claim 1, wherein the clean room class cleanliness required for the indoor space is ZAPClean room 1-12 class cleanliness.

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