An enhanced photocatalytic antibacterial and deodorizing full heat exchange fresh air fan

Abstract

The present invention provides an enhanced photocatalytic antibacterial and deodorizing full heat exchange fresh air blower, comprising a housing, a full heat exchange module, an air purification filter element, a photocatalytic module and an air quality monitoring module, wherein the housing is provided with an airflow separation horizontal plate and an airflow separation vertical plate, wherein the airflow separation horizontal plate and the airflow separation vertical plate are vertically cross-connected, wherein the airflow separation horizontal plate, the airflow separation vertical plate and the housing walls divide the interior of the housing into a first area, a second area, a third area and a fourth area, wherein a first air purification filter element is provided in the first area, a second air purification filter element is provided in the second area, and an air quality monitoring module is provided in the first air duct and the second air duct respectively. The present invention has the beneficial effects of sterilizing, deodorizing and degrading organic pollutants; avoiding the use of physical adsorption consumables such as activated carbon and molecular sieves, reducing operation and maintenance costs, reducing energy consumption, and being green and environmentally friendly.

Description

Technical Field

[0001] The invention belongs to the field of air purification, and in particular relates to an enhanced photocatalytic antibacterial and deodorizing full heat exchange fresh air fan. Background Art

[0002] The existing indoor air purification and fresh air system simply uses positive pressure or negative pressure to discharge indoor polluted air into the atmosphere; on the one hand, the traditional air purification and fresh air system does not purify the indoor air and directly discharges it into the atmosphere, which will cause certain harm to the surrounding atmospheric environment in the long run; in addition, the traditional fresh air system can only filter particulate pollutants such as PM2.5, PM10, etc. Some use physical adsorption to adsorb some organic pollutants, but the physical adsorption material is in an adsorption saturation state and is easy to breed bacteria, so it needs to be replaced in time. Therefore, the operation and maintenance cost of the equipment is greatly increased; if the replacement is not timely, secondary pollution will occur. Summary of the invention

[0003] The purpose of the present invention is to provide an enhanced photocatalytic antibacterial and deodorizing full heat exchange fresh air fan, which can degrade organic pollutants, prevent indoor harmful VOC gases from being directly discharged into the atmosphere, causing air pollution; enhance the bactericidal and disinfecting effects, prevent the spread of bacteria and fungal spores in the air, and reduce indoor microbial pollution; avoid the use of physical adsorption materials, reduce operation and maintenance costs, and is particularly suitable for use in wall-mounted, cabinet or central fresh air systems.

[0004] The technical solution of the present invention is: an enhanced photocatalytic antibacterial deodorizing full heat exchange fresh air fan, comprising a shell, a full heat exchange module, an air purification filter element, a photocatalytic module and an air quality monitoring module.

[0005] The shell is provided with an airflow separation horizontal plate and an airflow separation vertical plate, the airflow separation horizontal plate and the airflow separation vertical plate are vertically cross-connected, the airflow separation horizontal plate, the airflow separation vertical plate and the shell walls divide the inside of the shell into a first area, a second area, a third area and a fourth area, a first air purification filter element is provided in the first area, and a second air purification filter element is provided in the second area.

[0006] The lower wall of the shell of the first area is provided with a first air inlet, and the first air inlet is the indoor air inlet. The lower wall of the shell of the second area is provided with a second air inlet, and a three-way valve is provided at the second air inlet. One of the three-way valves is connected to the second air inlet, and the second of the three-way valves is connected to the outdoor fresh air inlet. The three-way valve is connected to the indoor air inlet, which can be adjusted to a single indoor air intake, a single outdoor air intake, or a combined indoor and outdoor air intake mode, thereby realizing the switching of the equipment between two different working modes of air purifier and fresh air blower.

[0007] The upper wall of the shell of the third area is provided with a first air outlet, which is an indoor air outlet for releasing the processed fresh air into the room; the upper wall of the shell of the fourth area is provided with a second air outlet, which is an outdoor air outlet for discharging the indoor dirty air to the outdoors, and a check valve is provided in the second air outlet.

[0008] A full heat exchange module is provided at the connection between the airflow dividing horizontal plate and the airflow dividing vertical plate, the exhaust air inlet of the full heat exchange module is provided in the first area, the fresh air inlet of the full heat exchange module is provided in the second area, the fresh air outlet of the full heat exchange module is provided in the third area, and the exhaust air outlet of the full heat exchange module is provided in the fourth area.

[0009] The photocatalytic module includes a first photocatalytic module and a second photocatalytic module. The first photocatalytic module is arranged in the third area, and the second photocatalytic module is arranged in the fourth area. The first photocatalytic module is used to deeply purify the air introduced from the outdoors, and can also purify the air returned indoors, sterilize and disinfect, and avoid indoor microbial contamination. The second photocatalytic module is used to deeply purify the polluted air discharged to the outdoors to avoid harming the atmospheric environment (beyond the self-repairing ability of the atmosphere).

[0010] The first photocatalytic module and the second photocatalytic module have the same structure. The first photocatalytic module includes a catalytic air inlet, a catalytic air outlet, an air flow channel, a light source, and a photocatalytic medium. The two ends of the air flow channel are respectively provided with a catalytic air inlet and a catalytic air outlet. The light source is evenly distributed in the middle or periphery of the air flow channel. The air flow channel is provided with a photocatalytic medium.

[0011] The exhaust outlet is connected to one end of the exhaust pipe, the other end of the exhaust pipe is connected to the catalytic air inlet of the second photocatalytic module, the catalytic air outlet of the second photocatalytic module is connected to one end of the second catalytic tube, the other end of the second catalytic tube is connected to the inlet of the second centrifugal fan, the outlet of the second centrifugal fan is connected to one end of the second air duct, and the other end of the second air duct is connected to the second air outlet.

[0012] The fresh air outlet is connected to one end of the fresh air duct, the other end of the fresh air duct is connected to the catalytic air inlet of the first photocatalytic module, the catalytic air outlet of the first photocatalytic module is connected to one end of the first catalytic tube, the other end of the first catalytic tube is connected to the inlet of the first centrifugal fan, the outlet of the first centrifugal fan is connected to one end of the first air duct, the other end of the first air duct is connected to the first air outlet, and air quality monitoring modules are respectively provided in the first air duct and the second air duct.

[0013] Furthermore, the photocatalytic medium is a filled photocatalytic medium, a porous structure photocatalytic medium, or a special-shaped flow channel photocatalytic medium, or a combination of the above.

[0014] Furthermore, the total heat exchange module is a plate-fin total heat exchanger or a rotary total heat exchanger.

[0015] Furthermore, the light source is one or more of a single-wavelength or dual-wavelength ultraviolet lamp or ultraviolet lamp beads, a fluorescent lamp, and an LED lamp.

[0016] Furthermore, the first centrifugal fan and the second centrifugal fan are both silent centrifugal fans, which can automatically adjust the air speed according to the data of the monitoring module; when the indoor air quality is poor, the speed is increased to improve the purification efficiency; when the air quality is good, the speed is reduced, which is silent and energy-saving.

[0017] Furthermore, the first air purification filter element and the second air purification filter element are primary or medium and high efficiency filter elements in HEPA mesh, bamboo fiber, glass fiber or other forms, or a combination of primary and medium and high efficiency filter elements.

[0018] Furthermore, the air quality monitoring module is one or more of a PM2.5 monitoring module, a PM10 monitoring module, a VOC monitoring module, an ammonia monitoring module, a formaldehyde monitoring module, and a carbon dioxide monitoring module.

[0019] Furthermore, the air quality detection module includes a signal transmission circuit, and the signal transmission circuit includes an input circuit, a differential amplifier circuit, a bias common source gain circuit, and an output circuit.

[0020] The input circuit includes:

[0021] A first input terminal, the first input terminal is connected to a first inductor and a first capacitor in series;

[0022] A second input terminal, the second input terminal is connected to a second inductor and a second capacitor in series;

[0023] A first variable resistor, wherein a first end of the first variable resistor is connected to an output end of the first capacitor, a second end of the first variable resistor is connected to an output end of the second capacitor, and a resistor head of the first variable resistor is connected to a ground port via a third capacitor;

[0024] The differential amplifier circuit includes:

[0025] A first transistor, a gate of which is respectively connected to the first end of the first variable resistor and the output end of the first capacitor, and a source of which is connected to the second end of the first variable resistor and the output end of the second capacitor through a fourth capacitor;

[0026] a second transistor, a gate of which is respectively connected to the first end of the fifth capacitor and the gate of the first transistor, a source of which is connected to the first end of the second variable resistor, and a resistor head of the second variable resistor is grounded;

[0027] a third transistor, whose source is connected to the second end of the second variable resistor and whose gate is connected between the fourth capacitor and the gate of the fourth transistor;

[0028] a fourth transistor, a source of which is connected to the second end of the fifth capacitor;

[0029] The drain of the first transistor, the drain of the second transistor, the drain of the third transistor, and the drain of the fourth transistor are connected to the same ground port;

[0030] The bias common source gain circuit includes:

[0031] a fifth transistor, whose gate is respectively connected to the second end of the sixth capacitor and the first end of the eighth capacitor, and whose drain is connected to the first end of the fifth variable resistor and the ground port; wherein the first end of the sixth capacitor is connected to the first end of the second variable resistor, and the second end of the eighth capacitor is connected to the first end of the tuning variable capacitor through the third resistor;

[0032] a sixth transistor, whose drain is connected to the source of the fifth transistor, whose gate is respectively connected to the second end of the seventh capacitor and the first end of the ninth capacitor, and whose source is connected to the second end of the fifth variable resistor; wherein the first end of the seventh capacitor is connected to the second end of the second variable resistor, and the second end of the ninth capacitor is connected to the second end of the tuning variable capacitor through the fourth resistor;

[0033] The output circuit includes:

[0034] a tenth capacitor, a first end of which is connected to the first end of the tuning variable capacitor, and a second end of which is connected to the first output end via a third inductor;

[0035] An eleventh capacitor has a first end connected to the second end of the tuning variable capacitor, and a second end connected to the second output end via a fourth inductor.

[0036] The advantages and positive effects of the present invention are: due to the adoption of the above technical solution,

[0037] By adjusting the first air inlet and the second air inlet, it can be used as two devices according to the actual situation. It can be used as a fresh air fan and also has the function of a photocatalytic air purifier.

[0038] Adding the first photocatalytic module and the second photocatalytic module has the functions of sterilization, deodorization, and degradation of organic pollutants;

[0039] Avoid the use of physical adsorption consumables such as activated carbon and molecular sieves, reduce operation and maintenance costs, reduce energy consumption, and be green and environmentally friendly;

[0040] Avoid completely releasing indoor organic pollutants into the atmosphere, which would cause air pollution;

[0041] It can not only remove particulate matter such as PM2.5 introduced into the fresh air from outdoors, but also degrade the organic pollutants it contains and kill microorganisms such as bacteria, mold and viruses. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic diagram of the structure of the present invention;

[0043] Figure 2 It is a signal transmission circuit diagram of the present invention.

[0044] In the figure: 1, shell, 2, full heat exchange module, 3, air flow separation horizontal plate, 4, air flow separation vertical plate, 5, first air purification filter element, 6, second air purification filter element, 7, first air inlet, 8, second air inlet, 9, outdoor fresh air inlet, 10, indoor air inlet, 11, first air outlet, 12, second air outlet, 13, first photocatalytic module, 14, second photocatalytic module, 15, first centrifugal fan, 16, second centrifugal fan. DETAILED DESCRIPTION

[0045] like Figure 1 As shown, the technical solution of the present invention is: an enhanced photocatalytic antibacterial deodorizing full heat exchange fresh air fan, comprising a housing 1, a full heat exchange module 2, an air purification filter element, a photocatalytic module and an air quality monitoring module,

[0046] The shell 1 is provided with an airflow separation horizontal plate 3 and an airflow separation vertical plate 4, which are vertically cross-connected. The airflow separation horizontal plate 3, the airflow separation vertical plate 4 and the walls of the shell 1 divide the interior of the shell into a first area, a second area, a third area and a fourth area. A first air purification filter element 5 is provided in the first area, and a second air purification filter element 6 is provided in the second area.

[0047] A first air inlet 7 is provided on the lower wall of the shell 1 in the first area, and the first air inlet 7 is an indoor air inlet. A second air inlet 8 is provided on the lower wall of the shell 1 in the second area, and a three-way valve is provided at the second air inlet 8. One of the three-way valves is connected to the second air inlet 8, and the second of the three-way valves is connected to the outdoor fresh air inlet 9. The three-way valve is connected to the indoor air inlet 10, which can be adjusted to a single indoor air intake, a single outdoor air intake, or a combined indoor and outdoor air intake mode, thereby realizing the switching of the equipment between two different working modes of an air purifier and a fresh air blower;

[0048] The upper wall of the shell 1 in the third area is provided with a first air outlet 11, which is an indoor air outlet for releasing the processed fresh air into the room; the upper wall of the shell 1 in the fourth area is provided with a second air outlet 12, which is an outdoor air outlet for discharging the indoor dirty air to the outdoors; a check valve is provided in the second air outlet 12;

[0049] A full heat exchange module 2 is provided at the connection between the airflow dividing horizontal plate 3 and the airflow dividing vertical plate 4, the exhaust air inlet of the full heat exchange module 2 is provided in the first area, the fresh air inlet of the full heat exchange module 2 is provided in the second area, the fresh air outlet of the full heat exchange module 2 is provided in the third area, and the exhaust air outlet of the full heat exchange module is provided in the fourth area.

[0050] The photocatalytic module includes a first photocatalytic module 13 and a second photocatalytic module 14. The first photocatalytic module 13 is provided in the third area, and the second photocatalytic module 14 is provided in the fourth area. The first photocatalytic module 13 is used to deeply purify the air introduced from the outdoors, and can also purify the indoor reflux air, sterilize and disinfect, and avoid indoor microbial contamination. The second photocatalytic module 14 is used to deeply purify the polluted air discharged to the outdoors, avoid harming the atmospheric environment, and exceed the self-repairing ability of the atmosphere.

[0051] The first photocatalytic module 13 and the second photocatalytic module 14 have the same structure. The first photocatalytic module 13 includes a catalytic air inlet, a catalytic air outlet, an air flow channel, a light source, and a photocatalytic medium. The two ends of the air flow channel are respectively provided with a catalytic air inlet and a catalytic air outlet. The light source is evenly distributed in the middle or periphery of the air flow channel. The air flow channel is provided with a photocatalytic medium.

[0052] The exhaust outlet is connected to one end of the exhaust pipe, the other end of the exhaust pipe is connected to the catalytic air inlet of the second photocatalytic module 14, the catalytic air outlet of the second photocatalytic module 14 is connected to one end of the second catalytic tube, the other end of the second catalytic tube is connected to the inlet of the second centrifugal fan 16, the outlet of the second centrifugal fan 16 is connected to one end of the second off-air duct, and the other end of the second off-air duct is connected to the second air outlet 8.

[0053] The fresh air outlet is connected to one end of the fresh air duct, the other end of the fresh air duct is connected to the catalytic air inlet of the first photocatalytic module 13, the catalytic air outlet of the first photocatalytic module 13 is connected to one end of the first catalytic tube, the other end of the first catalytic tube is connected to the inlet of the first centrifugal fan 15, the outlet of the first centrifugal fan 15 is connected to one end of the first air duct, the other end of the first air duct is connected to the first air outlet 7, and air quality monitoring modules are respectively provided in the first air duct and the second air duct.

[0054] In this embodiment, the photocatalytic medium may be a combination of one or more of the following photocatalytic medium structures;

[0055] a) Filled photocatalytic media, i.e., a carrier loaded with photocatalyst is filled in the air flow channel, such as glass tubes, glass beads (hollow or non-hollow structure), glass fibers, activated carbon, glass fibers or other filling materials;

[0056] b. Porous structure photocatalytic medium, that is, the photocatalytic medium material can adopt a sheet or block porous structure material loaded with photocatalytic material, such as honeycomb carbon, honeycomb aluminum, honeycomb ceramics, foam nickel, foam ceramics and other structures and materials;

[0057] c) Shaped channel photocatalytic media, in order to increase the contact area between the gas flowing through and the photocatalytic material or to increase the time the air flows through the channel, a channel structure is designed by using a spiral air channel, a gourd-shaped air channel and its variants, or by adding baffles in the channel;

[0058] In this embodiment, the total heat exchange module 2 is a plate-fin total heat exchanger or a rotary total heat exchanger.

[0059] In this embodiment, the light source is one or more of a single-wavelength or dual-wavelength ultraviolet lamp or ultraviolet lamp beads, a fluorescent lamp, and an LED lamp. The inner wall of the air flow channel is coated with a reflective material.

[0060] In this embodiment, the first centrifugal fan 15 and the second centrifugal fan 16 are both silent centrifugal fans, which can automatically adjust the air speed according to the data of the monitoring module; when the indoor air quality is poor, the speed is increased to improve the purification efficiency; when the air quality is good, the speed is reduced, which is silent and energy-saving.

[0061] In this embodiment, the first air purification filter element 5 and the second air purification filter element 6 are HEPA mesh, bamboo fiber, glass fiber or other forms of primary or medium and high efficiency filter elements, or a combination of primary and medium and high efficiency filter elements.

[0062] In this embodiment, the air quality monitoring module is one or more of a PM2.5 monitoring module, a PM10 monitoring module, a VOC monitoring module, an ammonia monitoring module, a formaldehyde monitoring module, and a carbon dioxide monitoring module.

[0063] The working process of this example:

[0064] The device includes two channels. The first channel is the first area and the fourth area, which is composed of the first air inlet (indoor air inlet), the first air purification filter element, the full heat exchange module, the second photocatalytic module, and the second air outlet (outdoor air outlet); the second channel is the second area and the third area, which is composed of the second air inlet, the second air purification filter element, the full heat exchange module, the first photocatalytic module, and the first air outlet (indoor air outlet).

[0065] The second air inlet is a common air inlet for outdoor fresh cold air and indoor air; the air inlet contains a three-way valve, which can be adjusted to a single indoor air intake, a single outdoor air intake, or a combined indoor and outdoor air intake mode, thereby realizing the switching of the equipment between two different working modes: air purifier and fresh air blower;

[0066] The first air outlet is an indoor air outlet, which is used to release the processed fresh air into the room;

[0067] The second air outlet is an outdoor air outlet, which is used to discharge the indoor polluted air to the outdoors.

[0068] In one embodiment, the air quality detection module includes a signal transmission circuit, and the signal transmission circuit includes an input circuit, a differential amplifier circuit, a bias common source gain circuit, and an output circuit.

[0069] The input circuit includes:

[0070] A first input terminal B1, the first input terminal B1 is connected to a first inductor I1 and a first capacitor C1 in series;

[0071] A second input terminal B2, the second input terminal B2 is connected to a second inductor I2 and a second capacitor C2 in series;

[0072] A first variable resistor R1, wherein a first end of the first variable resistor R1 is connected to an output end of the first capacitor C1, a second end of the first variable resistor R1 is connected to an output end of the second capacitor C2, and a resistor head of the first variable resistor R1 is connected to a ground port via a third capacitor C3;

[0073] The differential amplifier circuit includes:

[0074] A first transistor M1, whose gate is respectively connected to the first end of the first variable resistor R1 and the output end of the first capacitor C1, and whose source is connected to the second end of the first variable resistor R1 and the output end of the second capacitor C2 through a fourth capacitor C4;

[0075] A second transistor M2, a gate of which is respectively connected to the first end of the fifth capacitor C5 and the gate of the first transistor M1, a source of which is connected to the first end of the second variable resistor R2, and a resistor head of the second variable resistor R2 is grounded;

[0076] a third transistor M3, whose source is connected to the second end of the second variable resistor R2, and whose gate is connected between the fourth capacitor C4 and the gate of the fourth transistor M4;

[0077] a fourth transistor M4, a source of which is connected to the second end of the fifth capacitor C5;

[0078] The drain of the first transistor M1, the drain of the second transistor M2, the drain of the third transistor M3, and the drain of the fourth transistor M4 are connected to the same ground port;

[0079] The bias common source gain circuit includes:

[0080] a fifth transistor M5, whose gate is respectively connected to the second end of the sixth capacitor C6 and the first end of the eighth capacitor C8, and whose drain is connected to the first end of the fifth variable resistor R5 and the ground port; wherein the first end of the sixth capacitor C6 is connected to the first end of the second variable resistor R2, and the second end of the eighth capacitor C8 is connected to the first end of the tuning variable capacitor Z1 through the third resistor R3;

[0081] a sixth transistor M6, whose drain is connected to the source of the fifth transistor M5, whose gate is respectively connected to the second end of the seventh capacitor C7 and the first end of the ninth capacitor C9, and whose source is connected to the second end of the fifth variable resistor R5; wherein the first end of the seventh capacitor C7 is connected to the second end of the second variable resistor R2, and the second end of the ninth capacitor C9 is connected to the second end of the tuning variable capacitor Z1 through the fourth resistor R4;

[0082] The output circuit includes:

[0083] a tenth capacitor C10, a first end of which is connected to the first end of the tuning variable capacitor Z1, and a second end of which is connected to the first output terminal T1 via the third inductor I3;

[0084] The eleventh capacitor C11 has a first end connected to the second end of the tuning variable capacitor Z1, and a second end connected to the second output terminal T2 through the fourth inductor I4. During the operation of the entire circuit, the signal first enters the differential amplifier circuit from the input terminal after being confirmed by the input circuit, and the signal is linearly amplified and transmitted under the action of four transistor groups of different models and sizes. The amplified signal then enters the bias common source gain circuit composed of transistors and capacitors for signal complement gain, and the signal after bias gain is output through the output terminal of the output circuit, thereby completing the entire transmission process of signal amplification and interference removal.

[0085] After the signal is amplified by the single-stage linear amplification of the differential amplifier circuit and the common-source amplification gain of the bias common-source gain circuit, the signal can be transmitted over a longer path without excessive attenuation and without mutual interference between multiple groups of signals.

[0086] The photocatalytic system is introduced on the basis of the traditional fresh air fan, so that it has the following functions on the basis of the traditional fresh air fan:

[0087] 1) It can degrade organic pollutants and prevent harmful VOC gases in the room from being directly discharged into the atmosphere, causing air pollution;

[0088] 2) Enhance the sterilization and disinfection effect, prevent the spread of bacteria and fungal spores in the air, and reduce indoor microbial pollution;

[0089] 3) Avoid the use of physical adsorption materials and reduce operation and maintenance costs;

[0090] 4) Deeply treat the air introduced from the outdoors to bring in purer and cleaner air;

[0091] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. An enhanced photocatalytic antibacterial and deodorizing full heat exchange fresh air fan, characterized by: It includes a shell, a full heat exchange module, an air purification filter, a photocatalytic module and an air quality monitoring module. The shell is provided with an airflow separation horizontal plate and an airflow separation vertical plate, the airflow separation horizontal plate and the airflow separation vertical plate are vertically cross-connected, the airflow separation horizontal plate, the airflow separation vertical plate and the shell walls divide the inside of the shell into a first area, a second area, a third area and a fourth area, a first air purification filter element is provided in the first area, and a second air purification filter element is provided in the second area. A first air inlet is provided on the lower wall of the shell of the first area, and the first air inlet is an indoor air inlet. A second air inlet is provided on the lower wall of the shell of the second area, and a three-way valve is provided at the second air inlet. One of the three-way valves is connected to the second air inlet, the second of the three-way valves is connected to the outdoor fresh air inlet, and the three-way valve is connected to the indoor air inlet. The upper wall of the shell of the third area is provided with a first air outlet, and the first air outlet is an indoor air outlet. The upper wall of the shell of the fourth area is provided with a second air outlet, and the second air outlet is an outdoor air outlet. A check valve is provided in the second air outlet. A first air purification filter is provided in the first area, and a second air purification filter is provided in the second area. A full heat exchange module is provided at the connection between the airflow dividing horizontal plate and the airflow dividing vertical plate, the exhaust air inlet of the full heat exchange module is provided in the first area, the fresh air inlet of the full heat exchange module is provided in the second area, the fresh air outlet of the full heat exchange module is provided in the third area, and the exhaust air outlet of the full heat exchange module is provided in the fourth area. The photocatalytic module includes a first photocatalytic module and a second photocatalytic module. The first photocatalytic module is disposed in the third region, and the second photocatalytic module is disposed in the fourth region. The first photocatalytic module and the second photocatalytic module have the same structure. The first photocatalytic module comprises a catalytic air inlet, a catalytic air outlet, an air flow channel, a light source, and a photocatalytic medium. The two ends of the air flow channel are respectively provided with a catalytic air inlet and a catalytic air outlet. The light source is evenly distributed in the middle or periphery of the air flow channel. The air flow channel is provided with a photocatalytic medium. The exhaust outlet is connected to one end of the exhaust pipe, the other end of the exhaust pipe is connected to the catalytic air inlet of the second photocatalytic module, the catalytic air outlet of the second photocatalytic module is connected to one end of the second catalytic tube, the other end of the second catalytic tube is connected to the inlet of the second centrifugal fan, the outlet of the second centrifugal fan is connected to one end of the second air duct, and the other end of the second air duct is connected to the second air outlet. The fresh air outlet is connected to one end of the fresh air duct, the other end of the fresh air duct is connected to the catalytic air inlet of the first photocatalytic module, the catalytic air outlet of the first photocatalytic module is connected to one end of the first catalytic tube, the other end of the first catalytic tube is connected to the inlet of the first centrifugal fan, the outlet of the first centrifugal fan is connected to one end of the first off-air duct, the other end of the first off-air duct is connected to the first air outlet, and the first off-air duct and the second off-air duct are respectively provided with air quality monitoring modules; The air quality monitoring module is one or more of a PM2.5 monitoring module, a PM10 monitoring module, a VOC monitoring module, an ammonia monitoring module, a formaldehyde monitoring module, and a carbon dioxide monitoring module; The air quality detection module includes a signal transmission circuit, and the signal transmission circuit includes an input circuit, a differential amplifier circuit, a bias common source gain circuit, and an output circuit; The input circuit includes: A first input terminal (B1), the first input terminal (B1) is connected to a first inductor (I1) and a first capacitor (C1) connected in series; A second input terminal (B2), the second input terminal (B2) is connected to a second inductor (I2) and a second capacitor (C2) connected in series; A first variable resistor (R1), wherein a first end of the first variable resistor (R1) is connected to an output end of a first capacitor (C1), a second end of the first variable resistor (R1) is connected to an output end of a second capacitor (C2), and a resistor head of the first variable resistor (R1) is connected to a ground port via a third capacitor (C3); The differential amplifier circuit includes: A first transistor (M1), a gate of which is respectively connected to a first end of a first variable resistor (R1) and an output end of a first capacitor (C1), and a source of which is connected to a second end of the first variable resistor (R1) and an output end of a second capacitor (C2) via a fourth capacitor (C4); a second transistor (M2), whose gate is respectively connected to the first end of the fifth capacitor (C5) and the gate of the first transistor (M1), whose source is connected to the first end of the second variable resistor (R2), and whose resistor head is grounded; a third transistor (M3), whose source is connected to the second end of the second variable resistor (R2), and whose gate is connected between the fourth capacitor (C4) and the gate of the fourth transistor (M4); a fourth transistor (M4), a source of which is connected to the second end of the fifth capacitor (C5); The drain of the first transistor (M1), the drain of the second transistor (M2), the drain of the third transistor (M3), and the drain of the fourth transistor (M4) are connected to the same ground port; The bias common source gain circuit includes: a fifth transistor (M5), whose gate is respectively connected to the second end of the sixth capacitor (C6) and the first end of the eighth capacitor (C8), and whose drain is connected to the first end of the fifth variable resistor (R5) and the ground port; wherein the first end of the sixth capacitor (C6) is connected to the first end of the second variable resistor (R2), and the second end of the eighth capacitor (C8) is connected to the first end of the tuning variable capacitor (Z1) via the third resistor (R3); a sixth transistor (M6), whose drain is connected to the source of the fifth transistor (M5), whose gate is respectively connected to the second end of the seventh capacitor (C7) and the first end of the ninth capacitor (C9), and whose source is connected to the second end of the fifth variable resistor (R5); wherein the first end of the seventh capacitor (C7) is connected to the second end of the second variable resistor (R2), and the second end of the ninth capacitor (C9) is connected to the second end of the tuning variable capacitor (Z1) via the fourth resistor (R4); The output circuit includes: a tenth capacitor (C10), a first end of which is connected to the first end of the tuning variable capacitor (Z1), and a second end of which is connected to the first output end (T1) via a third inductor (I3); An eleventh capacitor (C11) has a first end connected to the second end of the tuning variable capacitor (Z1), and a second end connected to the second output end (T2) via a fourth inductor (I4).

2. According to claim 1, an enhanced photocatalytic antibacterial deodorizing full heat exchange fresh air fan is characterized by: The total heat exchange module is a plate-fin total heat exchanger or a rotary total heat exchanger.

3. The enhanced photocatalytic antibacterial and deodorizing full heat exchange fresh air blower according to claim 1 is characterized by: The light source is one or more of a single-wavelength or dual-wavelength ultraviolet lamp or ultraviolet lamp bead, a fluorescent lamp, and an LED lamp.

4. The enhanced photocatalytic antibacterial and deodorizing full heat exchange fresh air blower according to claim 1 is characterized by: The first centrifugal fan and the second centrifugal fan are both silent centrifugal fans.

5. The enhanced photocatalytic antibacterial and deodorizing full heat exchange fresh air blower according to claim 1 is characterized by: The first air purification filter element and the second air purification filter element are both primary or medium and high efficiency filter elements in the form of HEPA net, bamboo fiber, glass fiber or other forms, or a combination of primary and medium and high efficiency filter elements.

6. The enhanced photocatalytic antibacterial and deodorizing full heat exchange fresh air blower according to claim 1 is characterized by: The photocatalytic medium is one or a combination of filled photocatalytic medium, porous structure photocatalytic medium or special-shaped flow channel photocatalytic medium.

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