A photocatalytic wall-mounted fresh air fan

Abstract

The present invention relates to a photocatalytic wall-mounted fresh air fan, comprising a hollow seat, a first air inlet and an environmental monitoring module are arranged at the lower end of the hollow seat, a three-way valve is installed below the hollow seat, a first filter module, a second filter module, a full heat exchange module, a first centrifugal fan, a photocatalytic module and a second centrifugal fan are fixedly connected inside the hollow seat, a photocatalytic module is arranged above the full heat exchange module, the photocatalytic module comprises a hollow glass tube, a through-hole plate, a transverse fixing block, a longitudinal fixing block and a light source, the hollow seat is processed with a first air outlet connected to the indoor and a second air outlet connected to the outdoor, the hollow seat is bonded to a connecting plate, and the connecting plate and the holder are slidably connected by the holder, the use is convenient, the operation and maintenance cost is low, the space utilization rate is high, the particulate pollutants can be filtered, volatile organic pollutants and nitrogen oxides and sulfur oxides in the air can be reduced, and sterilization and disinfection can be performed.

Description

Technical Field

[0001] The invention belongs to the technical field of air purification, and in particular relates to a photocatalytic wall-mounted fresh air fan. Background Art

[0002] Most of the existing VOC air purification filter elements only include dust removal devices, but do not have VOC air filtration systems; a small number of them are equipped with activated carbon, molecular sieves or other forms of physical adsorption test filter elements. After a period of use, they will reach an adsorption saturation state, so the filter element needs to be replaced, resulting in a waste of materials and a certain economic burden on consumers. If the physical adsorption filter element is not replaced in time, it will cause the desorption of the adsorbed VOC, and then cause secondary pollution; and after a period of use, the physical adsorption filter element will become moldy and bacteria will grow, further endangering people's health. Most of the existing air purification and fresh air systems directly discharge indoor air into the atmosphere without treatment. In the long run, it will damage the surrounding environment and cause certain harm to the surrounding atmosphere. In order to better enable the fresh air fan to purify and sterilize the air, it is necessary to use a photocatalytic filter element to improve the fresh air fan. Summary of the invention

[0003] The technical problem to be solved by the present invention overcomes the existing defects and provides a photocatalytic wall-mounted fresh air fan that is easy to use, has low operation and maintenance costs, and high space utilization. It can filter particulate pollutants, reduce volatile organic pollutants and nitrogen oxides and sulfur oxides in the air, and sterilize and disinfect, which can effectively solve the problems in the background technology.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] A photocatalytic wall-mounted fresh air fan comprises a hollow seat, a first air inlet and an environmental monitoring module are arranged at the lower end of the hollow seat, a three-way valve is installed below the hollow seat, a first filter module, a second filter module, a full heat exchange module, a first centrifugal fan, a photocatalytic module and a second centrifugal fan are fixedly connected inside the hollow seat, the first filter module is located above the first air inlet, the second filter module is arranged on the left side of the second air inlet, a photocatalytic module is arranged above the full heat exchange module, the photocatalytic module comprises a hollow glass tube, a through-hole plate, a horizontal fixing block, a longitudinal fixing block and a light source, the full heat exchange module is located on the right side of the first centrifugal fan, a second centrifugal fan is arranged above the photocatalytic module, the hollow seat is processed with a first air outlet connected to the indoor room and a second air outlet connected to the outdoors, the hollow seat is bonded to a connecting plate, and the connecting plate is slidably connected to the base through a card plate.

[0006] Furthermore, the environmental monitoring module is located on the right side of the first air inlet, and the environmental monitoring module includes a combination of one or more of a formaldehyde monitoring module, a carbon dioxide monitoring module, an ammonia monitoring module, a VOC monitoring module, a PM2.5 monitoring module, and a PM10 monitoring module.

[0007] Furthermore, the second air outlet is located above the second air inlet, and the first air outlet is located at the upper end of the hollow seat and above the second centrifugal fan.

[0008] Furthermore, the total heat exchange module is a plate-fin total heat exchanger or a rotary total heat exchanger, and the first filter module and the second filter module are a combination of one or more of a HEPA filter, a bamboo fiber filter, a glass fiber filter, and an electrostatic dust removal device.

[0009] Furthermore, the hollow glass tube, through-hole plate, transverse fixing block, longitudinal fixing block and light source constitute a photocatalytic unit. The photocatalytic module can be composed of multiple photocatalytic units connected in series or in parallel. The inner wall and outer wall of the hollow glass tube and the second hollow glass tube are both impregnated with photocatalytic coating and subjected to high-temperature treatment or left standing at room temperature for more than 24 hours. The light source is arranged in the central position of the photocatalytic module, and the light source is one or more of a single-wavelength ultraviolet lamp, a multi-wavelength ultraviolet lamp, an LED lamp, and a fluorescent lamp.

[0010] Furthermore, the plurality of hollow glass tubes are connected as a whole through a plurality of transverse fixing blocks and longitudinal fixing blocks, the hollow glass tubes are connected to two through-hole plates at the ends, the holder is processed with a slot, and the slot and the card plate are gap-matched.

[0011] Furthermore, the hollow seat is processed with a first flow channel and a second flow channel. The gas in the first flow channel passes through the first air inlet, the full heat exchange module, the photocatalytic module, the second centrifugal fan and the first air outlet in sequence, and the gas in the second flow channel passes through the second air inlet, the full heat exchange module, the first centrifugal fan, the photocatalytic module and the second air outlet in sequence.

[0012] Beneficial effects of the invention: The photocatalytic wall-mounted fresh air fan involved in the invention is easy to use, has low operation and maintenance costs, high space utilization, can filter particulate pollutants, reduce volatile organic pollutants and nitrogen oxides and sulfur oxides in the air, and sterilize and disinfect.

[0013] By setting up a full heat exchange module and a photocatalytic module, the air introduced from the outdoors passes through the full heat exchange module and the photocatalytic module successively, and meets the air exhausted from the indoor to the outdoors in the full heat exchange module for full heat exchange. In the photocatalytic module, the volatile organic pollutant gas, nitrogen oxides, and sulfur oxides introduced into the air are degraded, and comprehensive sterilization and disinfection are carried out to ensure the safety and health of the introduced gas.

[0014] By setting a second air inlet and a second air outlet, the air discharged from indoors to outdoors passes through the full heat exchange module and the photocatalytic module successively, and full heat exchange is performed in the full heat exchange module. In the photocatalytic module, the volatile organic pollutant gas discharged from indoors to outdoors is degraded to avoid pollution to the surrounding environment and reduce the VOCs content in the atmosphere;

[0015] By setting up a photocatalytic glass tube, the inner and outer walls of the photocatalytic glass tube are coated with photocatalytic materials, and the air introduced from the outdoors into the room and the air discharged from the room to the outdoors cross through the photocatalytic module, effectively increasing the utilization efficiency of the photocatalytic module. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0017] Figure 1 It is a cross-sectional view of a photocatalytic wall-mounted fresh air fan of the present invention.

[0018] Figure 2 It is a specific schematic diagram of a photocatalytic module of a photocatalytic wall-mounted fresh air fan of the present invention.

[0019] Figure 3 It is a stereoscopic diagram of a holder, a clamping plate and a connecting plate of a photocatalytic wall-mounted fresh air fan of the present invention.

[0020] Figure 4 This is a working diagram of a photocatalytic wall-mounted fresh air blower of the present invention;

[0021] Figure 5 This is a structural diagram of a silencing device of a photocatalytic wall-mounted fresh air blower of the present invention;

[0022] Figure 6 It is a circuit schematic diagram of a circuit module of a photocatalytic wall-mounted fresh air fan of the present invention.

[0023] Numbers in the figure: 1. hollow seat; 2. three-way valve; 3. first air inlet; 4. first filter module; 5. environmental detection module; 6. second air inlet; 7. second filter module; 8. full heat exchange module; 9. first centrifugal fan; 10. photocatalytic module; 11. longitudinal fixing block; 12. transverse fixing block; 13. hollow glass tube; 14. through-hole plate; 15. light source; 16. second air outlet; 17. second centrifugal fan; 18. first air outlet; 19. connecting plate; 20. card plate; 21. card slot; 22. card seat. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0025] like Figure 1-Figure 3 As shown, a photocatalytic wall-mounted fresh air fan comprises a hollow seat 1, a first air inlet 3 and an environmental monitoring module 5 are arranged at the lower end of the hollow seat 1, a three-way valve 2 is installed below the hollow seat 1 to realize the switching of the device between two different modes of fresh air fan and indoor air purifier, a first filter module 4, a second filter module 7, a full heat exchange module 8, a first centrifugal fan 9, a photocatalytic module 10 and a second centrifugal fan 17 are fixedly connected inside the hollow seat 1, the first filter module 4 is located above the first air inlet 3, and the second filter module 7 is arranged on the left side of the second air inlet 6, The second air inlet 6 is connected to the indoor room. A photocatalytic module 10 is arranged above the full heat exchange module 8. The photocatalytic module 10 includes a hollow glass tube 13, a through-hole plate 14, a horizontal fixing block 12, a longitudinal fixing block 11 and a light source 15. The full heat exchange module 8 is located on the right side of the first centrifugal fan 9. A second centrifugal fan 17 is arranged above the photocatalytic module 10. The hollow seat 1 is processed with a first air outlet 18 connected to the indoor room and a second air outlet 16 connected to the outdoors. The hollow seat 1 is bonded to the connecting plate 19, and the connecting plate 19 is slidably connected to the base 22 through the card plate 20.

[0026] The environmental monitoring module 5 is located on the right side of the first air inlet 3. The environmental monitoring module 5 includes a formaldehyde monitoring module, a carbon dioxide monitoring module, an ammonia monitoring module, a VOC monitoring module, a PM2.5 monitoring module, and a PM10 monitoring module. The second air outlet 16 is located above the second air inlet 6. The first air outlet 18 is located at the upper end of the hollow seat 1 and above the second centrifugal fan 17. The total heat exchange module 8 is a plate-fin total heat exchanger or a rotary total heat exchanger. The first filter module 4 and the second filter module 7 are HE A combination of one or more of PA filter, bamboo fiber filter, glass fiber filter, and electrostatic dust removal device, a hollow glass tube 13, a through-hole plate 14, a horizontal fixing block 12, a longitudinal fixing block 11, and a light source 15 constitute a photocatalytic unit. The photocatalytic module 10 can be composed of a plurality of photocatalytic units connected in series or in parallel. The air can flow through the hollow glass tube 13 in the left and right directions or in the front and back directions. The photocatalytic module 10 processes the air. The two airflows are independent of each other and do not affect each other. The inner wall and the outer wall of the hollow glass tube 13 are both photocatalytically treated. The coating is impregnated and subjected to high temperature treatment or standing at room temperature for more than 24 hours to allow the photocatalytic material to be firmly attached to the surface of the glass tube. The light source 15 is arranged at the central position of the photocatalytic module. The light source 15 is one or more of a single-wavelength ultraviolet lamp, a multi-wavelength ultraviolet lamp, an LED lamp, and a fluorescent lamp. The plurality of hollow glass tubes 13 and the second hollow glass tube 14 are connected as a whole through a plurality of transverse fixing blocks 12 and a longitudinal fixing block 11. The hollow glass tube 13 is connected to the two through-hole plates 14 at the end. The card seat 22 is processed with a card slot 21, and the card slot 21 is connected to the card plate 2 0 clearance fit, reducing the wear and movement resistance of the card plate 2, the hollow seat 1 is processed with a first flow channel and a second flow channel, the gas in the first flow channel passes through the first air inlet 3, the full heat exchange module 8, the photocatalytic module 10, the second centrifugal fan 17 and the first air outlet 18 in sequence, the first flow channel processes the outdoor fresh air as indoor fresh air, the gas in the second flow channel passes through the second air inlet 6, the full heat exchange module 8, the first centrifugal fan 9, the photocatalytic module 10 and the second air outlet 16 in sequence, the second flow channel processes the indoor air and discharges it to the outdoors to reduce air pollution.

[0027] Working principle of the present invention: install the card seat 22 on the indoor wall, drag the hollow seat 1 to insert the card board 20 into the card board 20, install a pipe connected to the indoor at the second air inlet 6, install a pipe connected to the outdoor at the left end of the three-way valve 2, install a pipe connected to the indoor at the right end of the three-way valve 2, install a pipe connected to the indoor at the first air outlet 18, and install a pipe connected to the outdoor at the second air outlet 16. The fresh air fan is powered on and operates, and the first centrifugal fan 9 causes the air to flow through the first air inlet 3 and the second air inlet 6 into the hollow seat 1, and is filtered and processed by the first filter module 4 and the second filter module 7. With the help of the full heat exchange module 8, the indoor air and the outdoor air are heat exchanged to improve the utilization rate of thermal energy and make the fresh air fan more efficient and energy-saving. The air from the outdoor in the first flow channel will directly enter the photocatalytic module 10 and pass through the photocatalytic module A through-hole plate 14 at the lower end of the block 10 reaches the hollow glass tube 13. Under the action of the light source 15, the air in the hollow glass tube 13 undergoes a photocatalytic reaction, filters particulate pollutants, reduces volatile organic pollutants, and nitrogen oxides and sulfur oxides in the air. The second centrifugal fan 17 operates to generate an airflow to move the gas in the hollow glass tube 13 out of a through-hole plate 14 at the upper end of the photocatalytic module 10, and is discharged to the room through the second air outlet 16. The air from the room in the second flow channel passes through the total heat exchange module 8, passes through the first centrifugal fan 17, and then reaches the photocatalytic module 10. The photocatalytic material on the outer wall of the hollow glass tube 13 undergoes a photocatalytic reaction, filters particulate pollutants, reduces volatile organic pollutants, and nitrogen oxides and sulfur oxides in the air, and is discharged to the outside from the second air outlet 16 to reduce air pollution. The three-way valve 2 is controlled to connect the first air inlet 3 with the indoor air, so that the indoor gas can be recycled and the fresh air system can be switched to an indoor air purifier.

[0028] like Figure 5 As shown, in one embodiment,

[0029] The first air outlet 18 and the second air outlet 16 are both provided with a silencer through threaded connection, and the silencer includes:

[0030] The silencer connecting pipe 19 is provided with external threads at both ends. The inner wall of the silencer connecting pipe is provided with a buffer layer 19-1 for alleviating the vibration caused by the impact of the airflow on the inner wall of the silencer connecting pipe. The buffer layer 19-1 is provided with a spoiler 19-2 for reducing the airflow channel of the front flow and making a part of the front flow flow upward to form a vortex. The spoiler 19-2 is distributed in a spiral shape on the inner wall surface of the silencer connecting pipe; the surface of the spoiler 19-2 facing the air outlet is in an arc shape; the spoiler 19- 2 is bent at 90° toward the air inlet to form a guide portion 19-3 capable of directing airflow upward; the front end of the guide portion 19-3 is provided with a windward surface 19-4 extending upward from the front end of the guide portion 19-3 and tilted backward; the guide portion 19-3 and the windward surface 19-4 form a vortex cavity 19-5 in the middle where the airflow can generate vortex turns, and the buffer layer 19-1 includes a plurality of glass fiber layers 19-6 for increasing the sound absorption capacity of the buffer layer 4-31, and sound-absorbing cotton 19-7 is provided between the glass fiber layers 19-6;

[0031] The silencer 20 includes a rectangular box-shaped outer shell 20-1 and a partition plate 20-2 arranged in the outer shell 20-1. The partition plates 20-2 are arranged alternately from left to right along the inner wall of the outer shell 20-1, and the left end face of the outer shell 20-1 is provided with an air inlet 20-3, and the right end face is provided with an air outlet 20-4. The end of the partition plate 20-2 is provided with a sound absorbing body 20-5, and the inner wall of the air inlet 20-4 is provided with a thread, which is threadedly connected to the other end of the silencer connecting pipe 19.

[0032] The outer shell 20-1 is composed of a metal plate layer 20-11, a damping plate layer 20-12, a vacuum plywood layer 20-13, a sound-absorbing cotton plate layer 20-14 and a metal perforated plate layer 20-15 from the outside to the inside. In this embodiment, the partition plate 20-2, the metal plate layer 20-11 and the metal perforated plate layer 20-15 are all made of galvanized steel plates, the damping plate layer 20-12 is made of rubber, and the sound-absorbing body 20-5 is made of sound-absorbing cotton.

[0033] The beneficial effects of the above technical solution are:

[0034] The buffer layer of this embodiment is used to alleviate the vibration caused by the impact of the airflow on the inner wall of the ventilation hole. At the same time, when the airflow passes through the spoiler, a part of the airflow forms a vortex upward, thereby reducing the flow speed of the airflow and further reducing the wind noise.

[0035] By alternately arranging partition plates in the outer shell, the air flow is continuously compressed, expanded, and compressed again when passing through the inside of the muffler, so that the kinetic energy of the air flow is converted into heat energy, which reduces noise. At the same time, by setting the muffler outer shell as a multi-layer structure, the vibration of the outer shell can be minimized when the air flow passes through the muffler, thereby reducing noise transmission and improving the sound absorption effect of the muffler.

[0036] This embodiment has the advantages of good noise reduction effect and low vibration.

[0037] like Figure 6 As shown, in one embodiment,

[0038] The light source 15 is electrically connected to the light controller through a circuit module, and the circuit module includes an NPN bipolar transistor Q1, an NPN bipolar transistor Q2, an NPN bipolar transistor Q3, an NPN bipolar transistor Q4, an NPN bipolar transistor Q5, a PNP bipolar transistor Q6, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a resistor R16, a resistor R17, a resistor R18, a resistor R19, a resistor R20, a capacitor C11, and a capacitor C12;

[0039] The base of the NPN bipolar transistor Q1 is connected to one end of the resistor R11, the collector of the NPN bipolar transistor Q1 is connected to one end of the resistor R15, the emitter of the NPN bipolar transistor Q1 is connected to one end of the resistor R12 and a reference ground GND, the other end of the resistor R11 is connected to the other end of the resistor R12 and a power input terminal VDD, and the other end of the resistor R12 is connected to a first I / O interface terminal of the controller;

[0040] The base of the NPN bipolar transistor Q2 is connected to one end of the resistor R13, the collector of the NPN bipolar transistor Q2 is connected to one end of the resistor R19 and the resistor R20, the emitter of the NPN bipolar transistor Q2 is connected to one end of the resistor R14 and the reference ground GND, and the other end of the resistor R13 is connected to the other end of the resistor R14 and the second I / O interface end of the controller;

[0041] The base of the NPN bipolar transistor Q3 is connected to the capacitor C11, one end of the resistor R16 and the other end of the resistor R15, the other end of the capacitor R16 is connected to the other end of the capacitor C11 and the reference ground GND, the collector of the NPN bipolar transistor Q3 is connected to one end of the resistor R18, and the emitter of the NPN bipolar transistor Q3 is connected to one end of the resistor R17;

[0042] The base of the NPN bipolar transistor Q4 is connected to the other end of the resistor R17, the collector of the NPN bipolar transistor Q4 is connected to the other end of the resistor R18, the emitter of the NPN bipolar transistor Q4 is connected to the collector of the NPN bipolar transistor Q5, the base of the NPN bipolar transistor Q5 is connected to the other end of the resistor R19, the emitter of the NPN bipolar transistor Q5 is connected to one end of the capacitor C12, and the other end of the capacitor C12 is connected to one end of the warning light;

[0043] The emitter of the PNP bipolar transistor Q6 is connected to the emitter of the NPN bipolar transistor Q5 and one end of the capacitor C12, the collector of the PNP bipolar transistor Q6 is connected to the other end of the warning light and the reference ground GND, and the base of the PNP bipolar transistor Q6 is connected to the other end of the resistor R20.

[0044] The beneficial effects of the above technical solution are: through the design of the above circuit module, the light source 15 can be effectively operated with good adaptability. At the same time, only common components are needed in the control circuit to realize the functional control of the circuit, with low cost and stable electrical performance.

[0045] The above are preferred implementation modes of the present invention. Those skilled in the art to which the present invention belongs can also change and modify the above implementation modes. Therefore, the present invention is not limited to the above specific implementation modes. Any obvious improvements, substitutions or modifications made by those skilled in the art on the basis of the present invention belong to the protection scope of the present invention.

Claims

1. A photocatalytic wall-mounted fresh air blower, comprising a hollow seat (1), characterized in that: The lower end of the hollow seat (1) is provided with a first air inlet (3) and an environmental monitoring module (5); a three-way valve (2) is installed below the hollow seat (1); a first filter module (4), a second filter module (7), a full heat exchange module (8), a first centrifugal fan (9), a photocatalytic module (10) and a second centrifugal fan (17) are fixedly connected inside the hollow seat (1); the first filter module (4) is located above the first air inlet (3); the second filter module (7) is arranged on the left side of the second air inlet (6); a photocatalytic module (10) is arranged above the full heat exchange module (8); ), the photocatalytic module (10) comprises a hollow glass tube (13), a through-hole plate (14), a transverse fixing block (12), a longitudinal fixing block (11) and a light source (15); the total heat exchange module (8) is located on the right side of the first centrifugal fan (9); a second centrifugal fan (17) is arranged above the photocatalytic module (10); the hollow seat (1) is processed with a first air outlet (18) connected to the indoor and a second air outlet (16) connected to the outdoor; the hollow seat (1) is bonded to a connecting plate (19); and the connecting plate (19) is slidably connected to the holder (22) via a holder (20); The second air outlet (16) is located above the second air inlet (6), and the first air outlet (18) is located at the upper end of the hollow seat (1) and above the second centrifugal fan (17); The hollow glass tube (13), the through-hole plate (14), the transverse fixing block (12), the longitudinal fixing block (11) and the light source (15) constitute a photocatalytic unit. The photocatalytic module (10) can be composed of a plurality of photocatalytic units connected in series or in parallel. The inner wall and the outer wall of the hollow glass tube (13) are both treated by impregnation with a photocatalytic coating and subjected to high-temperature treatment or standing at room temperature for more than 24 hours. The light source (15) is arranged at the central position of the photocatalytic module. The light source (15) is one or more of a single-wavelength ultraviolet lamp, a multi-wavelength ultraviolet lamp, an LED lamp, and a fluorescent lamp. The plurality of hollow glass tubes (13) are connected as a whole via a plurality of transverse fixing blocks (12) and longitudinal fixing blocks (11); the hollow glass tubes (13) are connected to two through-hole plates (14) at the ends; the holder (22) is processed with a slot (21), and the slot (21) and the holder plate (20) are clearance-matched; The hollow seat (1) is processed with a first flow channel and a second flow channel, the gas in the first flow channel passes through the first air inlet (3), the total heat exchange module (8), the photocatalytic module (10), the second centrifugal fan (17) and the first air outlet (18) in sequence, and the gas in the second flow channel passes through the second air inlet (6), the total heat exchange module (8), the first centrifugal fan (9), the photocatalytic module (10) and the second air outlet (16) in sequence.

2. A photocatalytic wall-mounted fresh air blower according to claim 1, characterized in that: The environmental monitoring module (5) is located on the right side of the first air inlet (3), and the environmental monitoring module (5) comprises a combination of one or more of a formaldehyde monitoring module, a carbon dioxide monitoring module, an ammonia monitoring module, a VOC monitoring module, a PM2.5 monitoring module, and a PM10 monitoring module.

3. A photocatalytic wall-mounted fresh air blower according to claim 1, characterized in that: The total heat exchange module (8) is a plate-fin total heat exchanger or a rotary total heat exchanger, and the first filter module (4) and the second filter module (7) are a combination of one or more of a HEPA filter, a bamboo fiber filter, a glass fiber filter, and an electrostatic dust removal device.

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