CN209371401U - A sterilizing air duct and air sterilizer - Google Patents

Abstract

The utility model relates to a kind of sterilization air duct and air sterilisers, which includes: air inlet, long air duct, air outlet, and reflux boost section；The air inlet carries out first time sterilization for receiving the air for needing to sterilize, and to air；The long air duct, one end are connected to air inlet, and the other end is connected to air outlet and reflux boost section；The air outlet, positioned at the end in sterilization air duct, for directly filtered gas to be discharged；Flow back boost section, and one end is connected to long air duct and air outlet, and the other end is connected to air inlet, for that will be transmitted to air inlet through the filtered portion gas in long air duct；Wherein, the inlet of the reflux boost section is provided with flow divider；The left and right sides is staggeredly distributed with UVCLED lamp bead in the long air duct.The sterilization air duct of the utility model can be realized multiple sterilization, effectively improve germicidal efficiency.

Description

A sterilizing air duct and air sterilizer

technical field

The invention belongs to the field of sterilization, in particular to the field of air sterilizers.

Background technique

With the improvement of living standards, people's requirements for living environment are getting higher and higher. Bacteria, viruses, PM2.5 and other pollution sources in the air have brought great troubles to urban residents, especially bacteria and viruses have also brought hidden dangers to people's health. At present, the air filter on the market has limited sterilizing function or its sterilizing ability is not strong. Therefore, an air purification device with a sterilizing function is more and more important to improve people's living environment, and the application of air sterilizers will also follow. increasingly widespread.

The main function of the air sterilizer: it can not only kill the bacteria and viruses in the passing air to purify and remove the bacteria and viruses in the air; it can also filter various impurities in the air that are harmful to the human body, such as particulate matter , formaldehyde and smoke odor. Typically, an air sterilizer includes a UVC light source part, an electrical control part, a filter part and an air circulation part, where the filter part is used to remove impurities in the air, and the air circulation part is used to keep the air flowing through the filter part. Part of it is arranged in the air duct of the air circulation part to disinfect bacteria and viruses in the air.

Usually, the air circulation part includes a high-volume, high-pressure dual-axial flow fan and an air duct. Among them, by changing the design of the air duct, the speed and flow rate of the air flow in the air sterilizer can be changed. In addition, the appropriate air duct length, wind speed, and flow rate will affect the sterilization ability of the air sterilizer.

However, at present, most of the air ducts of the air sterilizer are short air ducts and large diameters, the purpose of which is to reduce the wind resistance, so that the performance requirements of the fans are lower and the cost is lower. But in this way, the action area of the ultraviolet LED light on the air flowing through the air duct will be small, the action time will be insufficient, and the sterilization efficiency will be low.

Contents of the invention

The purpose of the present invention is to solve the problem of low sterilization efficiency of the sterilizing air duct in the prior art, and propose a new type of sterilizing air duct.

A technical solution of the present invention: a sterilizing air duct, including: an air inlet, a long air duct, an air outlet, and a return pressurized section; the air inlet is used to receive the air that needs to be sterilized, and perform the first One-time sterilization; one end of the long air duct communicates with the air inlet, and the other end communicates with the air outlet and the return booster section; the air outlet is located at the end of the sterilization air duct and is used to directly discharge the filtered gas ; The backflow supercharging section, one end communicates with the long air duct and the air outlet, and the other end communicates with the air inlet, and is used to transmit part of the gas filtered by the long air duct to the air inlet; wherein, in the backflow supercharging section A diverter valve is provided at the entrance; in the long air duct, UVC LED lamp beads are evenly and staggeredly distributed on both sides of the plane perpendicular to the inner wall of the air duct.

Further, the long air duct is C-shaped, U-shaped, or L-shaped.

Further, the air inlet includes a HEPA filter assembly, a photocatalyst filter assembly, UVALED lamp beads, and a dual-axial flow fan.

Further, the UVC LED lamp beads are in a group of 4, the lamp beads in the group are electrically connected in series, and the lamp beads in the group are electrically connected in parallel.

Further, the diameter of the air duct at the front section of the long air duct is larger than the diameter of the air duct at the rear section.

Further, the UVALED lamp bead emits 365nm ultraviolet light.

Further, after the photocatalyst filter screen assembly is irradiated by the ultraviolet light emitted by UVALED, the titanium dioxide in the photocatalyst filter screen assembly produces hole/electron pairs that exceed the oxidation capacity of general chemical oxidants, forming strong oxidative free radicals. The free harmful substances and microorganisms in the air are decomposed into harmless carbon dioxide and water.

Further, the HEPA filter assembly can at least filter inhalable particulate matter, cigarette smoke, and pollen in the air.

Further, the UVC LED lamp bead emits 275nm deep ultraviolet light.

Further, the diverter valve is used to control the switch of air entering the return booster section; the diverter

The valve can be set manually or by default.

Further, the diverter valve is set to be in the closed state by default when the sterilizing air duct is just opened, and is set to be in the open state after the set N seconds have elapsed.

A technical solution of the present invention: an air sterilizer, which includes: the above-mentioned sterilizing air duct, a control circuit, a user interface, and a timer.

Further, the control circuit is connected with the user interface, the timer and the sterilizing air duct diverter valve respectively.

connected; the control circuit is used to receive user or default instructions, and send the timer to start counting N

seconds, and when the timer expires, send an open or close signal to the diverter valve

instruction.

Further, the air sterilizer also includes a cover plate; the cover plate is powered off by quick opening and self-locking

The device and the main body of the cover plate are composed.

Further, the quick-open cover self-locking power-off device includes: a toggle lever; a movable limit buckle, fixedly connected with the toggle lever; a magnet, installed on the movable limit buckle; a self-locking mechanism, a self-locking The mechanism is connected with the toggle lever; when the external force acts on the toggle lever to drive the self-locking mechanism from the non-locked state to the locked state, the magnet is used to trigger the self-locking power-off device adjacent to the quick-open cover. The control circuit is open.

Further, the self-locking mechanism also includes a spring; one end of the spring is connected to the toggle lever,

The other end of the spring is connected to the main body of the cover plate.

Further, the number of the springs is 2.

Further, the movable limit buckle and the spring are respectively arranged at both ends of the moving direction of the toggle rod, and when the quick opening self-locking power-off device is in an unlocked state, the movable limit clip The buckle protrudes from the cover body.

Further, the toggling lever includes a toggling lever body and a toggling lever handle; wherein, the toggling lever

The lever main body and the toggle lever handle are respectively arranged on two sides of the cover plate main body.

Further, when the quick-open cover self-locking power-off device is in the locked state, the movable limit buckle is recessed in the cover main body, or flush with one end of the cover main body.

Further, the self-locking structure also includes a self-locking mechanism hook, one end of the self-locking mechanism hook is connected to the dial

The moving rod is rotatably connected.

Further, the self-locking structure is made of metal material.

Further, when an external force acts on the toggle lever to drive the self-locking mechanism from the non-locking state to the locked state, the magnet is used to trigger the disconnection of the control circuit adjacent to the quick-opening self-locking power-off device, Including, when an external force acts on the toggle lever, the toggle lever drives the self-locking mechanism, the self-locking mechanism changes from the non-locked state to the locked state, and the self-locking mechanism generates displacement, which drives the displacement of the magnet on the movable limit buckle, so The magnet is far away from the Hall sensor on the control circuit, triggering the voltage drop of the Hall sensor, so that the circuit is powered off.

Further, the cover body also includes a stop mechanism; the stop mechanism is used to hook the self-lock mechanism when the self-lock mechanism is locked; and release the self-lock mechanism when the self-lock mechanism is not locked. .

Further, the stop mechanism is located between two springs.

Further, the stop mechanism includes a main body located between the two springs, a first side part and a second side part located on both sides of the main body and adjacent to the two springs, and connected to the first and second springs. The connection between the sides.

The beneficial effects of the present invention are:

The sterilizing air duct of the present invention can effectively guarantee the action time and radiation intensity of killing bacteria and viruses; and realize multiple sterilizations through the backflow pressurized section, so that the air filtered for the first time can be circulated in the body twice to achieve multiple sterilizations, Effectively improve the sterilization efficiency.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For Those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort.

Fig. 1 is the structural representation of the preferred air sterilizer of the embodiment of the present invention;

Fig. 2 is a detailed structural schematic diagram of a preferred sterilization channel according to an embodiment of the present invention;

Fig. 3 is the preferred UVCLED lamp bead sterilization schematic diagram of the embodiment of the present invention;

Fig. 4 is a schematic structural diagram of an air sterilizer including a timer preferred in an embodiment of the present invention;

Fig. 5 is a schematic diagram of the overall structure of the preferred air sterilizer of the embodiment of the present invention;

Fig. 6 is a schematic diagram of a specific structure of a preferred cover plate in an embodiment of the present invention;

Fig. 7 is a schematic diagram of the front and back structures of the preferred cover plate in the embodiment of the present invention;

Fig. 8 is a schematic diagram of the overall structure of a preferred covering device according to an embodiment of the present invention;

Fig. 9 is a schematic diagram of locking and unlocking of the hook of the preferred self-locking mechanism according to the embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The present invention will be further described below in conjunction with accompanying drawing.

Embodiment one

FIG. 1 is a schematic structural diagram of a preferred air sterilizer according to an embodiment of the present invention. As shown in FIG. 1 , the air sterilizer 1 includes a sterilizing air duct 11 , a control circuit 12 , and a user interface 13 . The control circuit 12 is electrically connected to the user interface 13 and the sterilizing air duct 11 respectively, and is used to receive user's instructions and control the sterilizing air duct 11 .

The sterilizing air duct 11 is the most important part of the air sterilizer 1, and Fig. 2 is a schematic structural view of the sterilizing air duct of the present invention, as shown in Fig. Road 22, air outlet 23, and return booster section 24.

Wherein, as can be seen from the air flow direction in Fig. 2, the air to be sterilized first enters the air inlet 21, and a HEPA filter assembly 211, a photocatalyst filter assembly 212, and UVALED (ultraviolet light LED) lamp beads are arranged in the air inlet 21. 213, and the twin-axial fan 214.

The air entering the air inlet 21 first passes through the HEPA filter assembly 211 (high efficiency air filter assembly). The HEPA filter assembly 211 is made of laminated borosilicate microfibers. The HEPA filter is white and consists of hundreds of regular folds. HEPA filters generally have a filtering effect of 99.99% on particles with a diameter of 0.3 microns or more. HEPA filters are specially designed to remove various air pollutants. It can efficiently remove inhalable particulate matter, cigarette smoke, pollen, etc.

The air coming out of the HEPA filter assembly 211 passes through the photocatalyst filter assembly 212 .

After the photocatalyst filter assembly 212 is irradiated by the 365nm ultraviolet light emitted by the UVALED lamp bead 213, the titanium dioxide (TiO ₂ ) in the photocatalyst filter assembly 212 can generate hole/electron pairs that exceed the oxidation ability of general chemical oxidants, forming a strong oxidation It can decompose free harmful substances and microorganisms in the air into harmless carbon dioxide and water, so as to achieve the purpose of purifying air, sterilizing, deodorizing, and decomposing formaldehyde. The superoxidation ability of _TiO2 destroys the cell membrane of the cell, causes the loss of cytoplasm and causes the death of bacteria, and can inhibit the reproduction of bacteria such as Escherichia coli and Staphylococcus aureus. Among them, the 365nm ultraviolet light is emitted by the UVALED lamp bead 213 arranged in the air inlet. The UVA LED lamp bead is driven by a 12V boost constant current.

The HEPA filter assembly 211 in the air inlet, the photocatalyst filter assembly 212, and the UVALED lamp bead 213 constitute the first sterilization barrier and realize the first sterilization.

The air sterilized for the first time passes through the double-axial flow fan 214 with high air volume and high air pressure, so that the air can enter the long air duct 22 with sufficient air volume. Among them, the double axial flow fan 214 is composed of two axial flow fans with the same parameters connected in series, so it can realize large air volume and high air pressure. The dual axial flow fan 214 is directly powered by a 12V adapter.

Embodiment two

As shown in Figure 2, the air after passing through the biaxial flow fan 214 enters the long air duct 22, and the diameter of the front section of the long air duct 22 is larger than the diameter of the rear section of the air duct. The diameter of the air duct in the front section is set larger than the diameter of the air duct in the rear section, which can effectively reduce the wind resistance, so that the wind resistance value will not change suddenly, which will affect the wind speed and the life of the fan.

UVC lamp beads 221 are evenly distributed in the long air duct 22 to form a second sterilization barrier. UVC (deep ultraviolet light) LED lamp beads 221 emit 275nm deep ultraviolet light, and directly irradiate the air to be sterilized by 275nm deep ultraviolet light. Deep ultraviolet light can Destroy the molecular structure of DNA or RNA in microbial organism cells, causing growth cell death and (or) regenerative cell death, to achieve the effect of sterilization and disinfection.

Fig. 3 is a schematic diagram of preferred UVCled lamp bead sterilization according to the embodiment of the present invention. As shown in Fig. 3, four UVCled lamp beads A, B, C, and D are distributed alternately on the left and right sides of the long air duct, and the ultraviolet rays emitted by the UVCled lamp beads It is fan-shaped in the long air duct, and the UVCled lamp beads are distributed in a left-right staggered manner. The four fan shapes intersect with each other, and the overlap is small. When the air circulates in the long air duct, the ultraviolet rays have no sterilizing dead angle in the irradiation range of the four lamp beads. , improving the sterilization efficiency. The 4 UVCled lamp beads are connected in series, and the 4 UVCled lamp beads are driven by a 12V boost constant current. When the length of the long air duct is long, 8 or 12 UVCled lamp beads can be used, and every 4 lamp beads form a group. The lamp beads in the group are connected in series, and the groups are connected in parallel. Way.

It can be seen from Figure 3 that the width of the long air duct is set to h, and the angle value of the ultraviolet light emitted by lamp bead A is a, then the theoretical value s of the distance between lamp bead A and lamp bead B in the horizontal direction is tan(a /2)*h, and the theoretical distance between lamp bead A and lamp bead C in the horizontal direction is 2*tan(a/2)*h. In practical applications, in order to avoid the dead angle of sterilization, the theoretical value s of the distance between lamp bead A and lamp bead B in the horizontal direction is usually set to be slightly smaller than tan(a/2)*h.

The killing time of deep ultraviolet rays for most bacteria and viruses is within 1 second. The second sterilizing barrier and the first sterilizing barrier are connected in series through the dual-axial flow fan, so that the air passes through the first and second sterilizing barriers, which can fully kill bacteria and viruses in the air.

In the design of the air duct, the present invention adopts a C-shaped, U-shaped or L-shaped long air duct 22 with a longer air duct distance. The 275nm deep ultraviolet light emitted by the lamp bead 221 can fully act on bacteria and viruses in terms of action time and radiation intensity.

Embodiment three

It can also be seen from Fig. 2 that the air outlet 23 and the backflow supercharging section 24 are respectively connected with the ends of the long air duct 22, wherein the other end of the air outlet 23 communicates with the outside air, and the other end of the backflow supercharging section 24 It communicates with the air inlet 21.

That is, a part of the air passing through the first sterilizing barrier and the second sterilizing barrier passes through the air outlet 23 and is directly discharged from the sterilizing air duct; The deflected flow in the section 24 re-enters the air inlet 21, thereby performing a second round of sterilization, so that the success rate of sterilization of the finally discharged air is greatly improved.

At the inlet of the backflow pressurization section 24 , a diverter valve 25 is arranged to control the switch of air entering the backflow pressurization section 24 . If the user wants to improve the sterilization success rate of the exhausted air, he can open the diverter valve 25, so that the air passing through the long air duct can enter the backflow booster section 24, because after the diverter valve 25 is opened, the air entering the sterilizing air per unit time The air in the tunnel becomes less, but the success rate of sterilization of the sterilized air increases per unit time.

Embodiment four

Fig. 4 is a schematic structural diagram of a preferred air sterilizer including a timer according to an embodiment of the present invention. As shown in Fig. 4 , the air sterilizer 4 includes a sterilizing air duct 41, a control circuit 42, a user interface 43, and a timer 44. Wherein, a diverter valve 411 is arranged in the sterilizing air duct 41 . The control circuit 42 is electrically connected with the sterilization air duct 41, the user interface 43, and the timer 44, respectively. The control circuit 42 sends a timing instruction to the timer 44 according to user settings or default settings, and sends an opening or closing instruction to the diverter valve 411 in the sterilization air duct 41 after receiving the timer 44 timing completion message.

For example, if the user wants to quickly sterilize the air, for example, when the user just turns on the air sterilizer, the diverter valve 411 can be closed, and after a period of rapid sterilization, the diverter valve 411 can be opened again to perform refined sterilization . The factory default setting is N (for example, N is set to 300) seconds before the sterilizer is turned on. The default setting is to close the diverter valve 411 to realize rapid air sterilization. After N minutes, most of the The air has been sterilized for one round, and the sterilizer automatically opens the diverter valve 411 to sterilize the air in a more refined manner and improve the success rate of air sterilization.

In summary, the sterilizing air duct of the present invention adopts HEPA filter components, photocatalyst filter components, a plurality of UVCled lamp beads staggered distribution, and a backflow booster section is set between the air inlet and the air outlet to achieve multiple sterilizations , effectively improve the sterilization efficiency.

Embodiment five

FIG. 5 is a schematic diagram of the overall structure of a preferred air sterilizer according to an embodiment of the present invention. As shown in FIG. 5 , the air sterilizer includes a sterilizer body 50 , an air inlet 52 , an air outlet 51 , and a cover plate 53 . Air enters the air sterilizer from the air inlet 52 , and is discharged from the air sterilizer through the air outlet 51 after being sterilized. In addition, by opening the cover plate 53, the filter screen of the air sterilizer can be replaced and maintained.

Embodiment six

FIG. 6 is a schematic diagram of a specific structure of a preferred cover plate according to an embodiment of the present invention. As shown in FIG. 6 , the cover plate includes a quick opening self-locking power-off device 62 and a cover plate main body 61 .

The quick-opening self-locking power-off device 62 includes a toggle lever 601 , a movable limit buckle 602 , a magnet 603 , and a self-locking mechanism 604 . As can be seen from Figure 6, the toggle lever 601 is designed as a U-shaped structure, two movable limit buckles 602 are arranged at the two tops of the U-shaped structure, and a magnet 603 is respectively arranged on the movable limit buckles 602.

The bottom of the U-shaped structure of the toggle lever 601 is provided with a self-lock mechanism 604, wherein the self-lock mechanism 604 includes a self-lock mechanism hook 6041 and two self-lock mechanism springs 6042, and one end of the self-lock mechanism hook 6041 is connected to the toggle lever. The middle position of the bottom of the U-shaped structure of 601 is rotatably fixedly connected, and the rotation mode is a self-locking mechanism. The hook 6041 can swing left and right with the connection point as the center of the circle. The other end of the self-locking mechanism hook 6041 is hook-shaped, and the self-locking mechanism hook 6041 is made of metal material. One end of the self-locking mechanism spring 6042 is fixedly connected to the bottom of the U-shaped structure of the toggle lever 601 , and the other end is fixed on the cover body 61 . Wherein, two self-locking mechanism springs 6042 are arranged on both sides of the self-locking mechanism hook 6041 .

The cover body 61 includes a fixed limit buckle 605 , a stop mechanism 606 , and a stop baffle 607 . Wherein, the stop mechanism 606 is used for when the self-lock mechanism 604 is locked, the hook 6041 of the self-lock mechanism catches the stop mechanism 606. The stop baffle 607 is fixed between the cover plate main body 61 and the toggle lever 601, and is used to prevent the toggle lever 601 from moving beyond the allowable moving distance, so as to avoid damage to the self-locking mechanism hook 6041 and the self-locking mechanism due to excessive moving distance Spring 6042, and other devices that may be involved in the process of over-distance movement.

Fig. 7 is a schematic diagram of the front and back structures of the preferred cover plate in the embodiment of the present invention. It can be seen from Fig. 7 that the quick-opening self-locking power-off device 62 in Fig. 6 also includes a toggle lever handle 702, and a toggle lever handle 702 It is fixedly connected with the toggle lever 701, and the toggle lever handle 702 and the toggle lever 701 are respectively arranged on both sides of the cover body 703. When the user toggles the toggle lever handle 701 to generate a displacement, the toggle lever 701 will also be driven displacement.

Embodiment seven

FIG. 8 is a schematic diagram of the overall structure of a preferred covering device according to an embodiment of the present invention. As shown in FIG. 8 , the covering device includes a cover plate 82 and a rear cover plate 81 .

The user closes the cover plate 82 on the rear cover plate 81, including the following steps:

Insert the fixed limit buckle 807 into the corresponding card position on the rear cover 81;

Forcefully move the toggle lever handle 702 in Figure 7 to make the toggle lever 801 move toward the fixed limit buckle 807, the spring 805 of the self-locking mechanism is compressed, the hook 804 of the self-locking mechanism hooks the stop mechanism 806, and the movement The limit buckle 802 is recessed in the end surface of the cover plate 82 or is flush with the end surface of the cover plate 82 , and the cover plate 82 is closed with the rear cover plate 81 .

Under the condition of ensuring that the cover plate 82 and the rear cover plate 81 are closed, continue to stir the handle of the toggle lever toward the direction of the fixed limit buckle 807, so that the self-locking mechanism hook 804 is separated from the stop mechanism 806, and the self-locking mechanism spring 805 pulls Stretch, the toggle lever 801 is displaced towards the direction opposite to the fixed limit buckle 807, and the movable limit buckle 802 is clamped on the corresponding locking position on the rear cover 81, and the cover plate installation is now completed.

The magnetic field of the magnet 803 arranged on the movable limit buckle 802 is arranged on the Hall sensor 810 on the control circuit 12 in Fig. 1 , so that the circuit maintains the state of being connected. Specifically, when the magnet 803 is close to the Hall sensor 810, the stronger the magnetic field, the higher the Hall voltage, and when the Hall voltage exceeds a predetermined value, the circuit is in the ON state.

The user removes the cover plate 82 from the rear cover plate 81, including the following steps:

The user toggles the toggle lever handle 702 in Figure 7, causing the toggle lever 801 to generate a displacement toward the fixed limit buckle 807, the self-locking mechanism spring 805 is compressed, the self-locking mechanism hook 804 hooks the stop mechanism 806, and the movement The limit buckle 802 is recessed in the end surface of the cover plate 82 or is flush with the end surface of the cover plate 82, and at this time, the movable limit buckle 802 is separated from the locking position of the rear cover plate 81;

Since the magnet 803 is installed on the movable limit buckle 802, when the movable limit buckle 802 breaks away from the locking position of the rear cover 81, the magnet 803 is also far away from the Hall sensor arranged on the control circuit 12 in FIG. The sensor starts counting, and if the magnet 803 is still far away from the Hall sensor within a predetermined time, the voltage of the Hall sensor is reduced, so that the circuit is powered off;

The user pulls the handle of the toggle lever outward perpendicular to the cover plate 82, so that the movable limit buckle 802 of the cover plate 82 is away from the rear cover 81; The upper corresponding card position goes out, that is, the detachment of the cover plate 82 from the rear cover plate 81 is completed.

The cover device in this embodiment can be used in the field of air sterilizers. When the filter screen in the air sterilizer needs to be replaced, the cover plate is removed, that is, the circuit of the air sterilizer is disconnected, and the UVC lamp bead is closed to avoid the cover. After the panel is opened, the harmful effect of UVC light on the human body. In addition, the cover plate is removed to disconnect the circuit, and the danger of live operation can be avoided when the user performs maintenance and other operations on the inside of the device.

Embodiment eight

Fig. 9 is a schematic diagram of locking and unlocking of the preferred self-locking mechanism hook of the embodiment of the present invention. As shown in Fig. 9, the stop mechanism 91 includes a main body 901 located between two springs, and a The first side part 902 of the root spring, the second side part 903 and the connecting part 904 connected between the first and second side parts.

The main body part 901 has a guide part 905 extending obliquely downward from the second side part 903 to the first side part 902, and an extension part 906 extending downward from the guide part 905 and parallel to the first side part 902. The end of the extension portion 906 is an L-shaped stop portion 907 that extends obliquely upward toward the second side portion 903 , and an L-shaped lead-out portion 908 that continues to extend obliquely upward. The connecting portion 904 includes a first slope 910 connected to the first side 902 and inclined downward from the first side 902 to the second side 903 ; and a first valley 911 at the lowest point of the first slope 910 the second slope 912 that is not connected to the first side 902 and slopes downward from the first side 902 to the second side 903 , and the second valley point 913 at the lowest point of the second slope 912 ;

The locking steps of the self-locking mechanism are as follows:

(1) The handle of the toggle lever is toggled by an external force, driving the hook 909 of the self-locking mechanism to move towards the direction of the stop mechanism 91;

(2) The hook 909 touches the guide part 905 and slides obliquely downward along the guide part 905 to reach the intersection of the guide part 905 and the extension part 906;

(3) The hook 909 enters the passage between the extension part 906 and the first side part 902 , and slides down along the passage to touch the first slope 910 of the connecting part 904 ;

(4) Driven by external force, the hook 909 slides along the first slope 910 to the first valley point 911. At this time, although there is still an external force, the hook no longer moves;

(5) Stop the external force applied to the hook 909, driven by the resilience of the spring, the hook 909 moves from the first valley point 911 to the direction of the main body 901, touches the stopper 907, and continues to follow the stopper 907 The slope surface of the slope slides upwards to reach the highest point of the stop part 907, that is, the stop point 914, and the locking of the self-locking mechanism is completed.

The steps to unlock the self-locking mechanism are as follows:

(1) When the self-locking mechanism needs to be unlocked, the toggle lever handle is toggled by an external force, driving the self-locking mechanism hook 909 to move from the stop point 914 to the connecting portion 904;

(2) The hook 909 touches the second slope 912, and continues to slide down to the second valley point 913 under the continuous driving of external force;

(3) After the hook 909 reaches the second valley point 913, although the hook 909 is still driven by external force, the hook 909 can no longer move;

Stop the external force applied to the hook 909, driven by the resilience of the spring, the hook 909 moves from the second valley point 913 to the direction of the main body 901, touches the lead-out part 908, and slides upward along the lead-out part 908 to enter the lead-out part 908 and the channel between the second side part 903, and slides out of the stop mechanism 91 to complete the unlocking.

While preferred embodiments of the invention have been described, additional changes and modifications to these embodiments can be made by those skilled in the art once the basic inventive concept is appreciated. Therefore, it is intended that the appended claims be construed to cover the preferred embodiment as well as all changes and modifications which fall within the scope of the invention.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (26)

1. A sterilizing air duct, characterized in that the sterilizing air duct comprises: Air inlet, long air duct, air outlet, and return booster section; The air inlet is used to receive air that needs to be sterilized, and to sterilize the air for the first time; One end of the long air duct communicates with the air inlet, and the other end communicates with the air outlet and the return booster section; The air outlet is located at the end of the sterilizing air duct and is used to directly discharge the filtered gas; The backflow pressurized section, one end communicates with the long air duct and the air outlet, and the other end communicates with the air inlet, which is used to transfer part of the air filtered by the long air duct to the air inlet; Wherein, a diverter valve is provided at the inlet of the return pressurization section; In the long air duct, UVC LED lamp beads are evenly and staggeredly distributed on both sides of the plane perpendicular to the inner wall of the air duct. 2. The sterilizing air duct according to claim 1, characterized in that: The long air duct is C-shaped, U-shaped, or L-shaped. 3. The sterilizing air duct according to claim 1, characterized in that: The air inlet includes a HEPA filter assembly, a photocatalyst filter assembly, UVALED lamp beads, and a dual-axial flow fan. 4. The sterilizing air duct according to claim 3, characterized in that: Each of the UVC LED lamp beads is a group of 4, the lamp beads in the group are electrically connected in series, and the groups are electrically connected in parallel. 5. The sterilizing air duct according to claim 3, characterized in that: The diameter of the air duct at the front section of the long air duct is larger than the diameter of the air duct at the rear section. 6. The sterilizing air duct according to claim 3, characterized in that: The UVA LED lamp beads emit 365nm ultraviolet light. 7. The sterilizing air duct according to any one of claims 3, 5-6, characterized in that: After the photocatalyst filter assembly is irradiated by the ultraviolet light emitted by the UVALED, the titanium dioxide in the photocatalyst filter assembly produces hole/electron pairs that exceed the oxidation capacity of general chemical oxidants, forming strong oxidizing free radicals, and dissociate the free radicals in the air. Harmful substances and microorganisms decompose into harmless carbon dioxide and water. 8. The sterilizing air duct according to claim 3, characterized in that: The HEPA filter assembly can at least filter inhalable particles, cigarette smoke, and pollen in the air. 9. The sterilizing air duct according to claim 3, characterized in that: The UVC LED lamp beads emit 275nm deep ultraviolet light. 10. The sterilizing air duct according to claim 3, characterized in that: The diverter valve is used to control the switch of air entering the backflow pressurization section; The diverter valve can be set manually or by default. 11. The sterilizing air duct according to claim 10, characterized in that: The default setting of the diverter valve is that it is in the closed state when the sterilizing air duct is just opened, and it is set in the open state after the set N seconds have elapsed. 12. An air sterilizer, characterized in that the air sterilizer comprises: The sterilization air duct, the control circuit, the user interface, and the timer according to any one of claims 1-11. 13. The air sterilizer according to claim 12, characterized in that: The control circuit is respectively connected with the user interface, the timer and the diverter valve of the sterilizing air duct; The control circuit is used to receive a user or default instruction, send an instruction to the timer to start counting for N seconds, and send an open or close instruction to the diverter valve when receiving the timer timing end message. 14. The air sterilizer according to claim 13, characterized in that: The air sterilizer also includes a cover plate; The cover plate is composed of a quick-open cover self-locking power-off device and a cover plate main body. 15. The air sterilizer according to claim 14, characterized in that: The quick-open cover self-locking power-off device includes: a toggle lever; The movable limit buckle is fixedly connected with the toggle lever; The magnet is installed on the movable limit buckle; Self-locking mechanism, the self-locking mechanism is connected with the toggle lever; When an external force acts on the toggle lever to drive the self-locking mechanism from the non-locking state to the locking state, the magnet is used to trigger the disconnection of the control circuit adjacent to the quick-opening self-locking power-off device. 16. The air sterilizer according to claim 15, characterized in that: The self-locking mechanism also includes a spring; One end of the spring is connected with the toggle lever, and the other end of the spring is connected with the main body of the cover plate. 17. The air sterilizer according to claim 16, characterized in that: The number of said springs is 2. 18. The air sterilizer according to claim 16, characterized in that: The movable limit buckle and the spring are respectively arranged at both ends of the moving direction of the toggle rod, and when the quick opening self-locking power-off device is in the unlocked state, the movable limit buckle protrudes beyond the The cover body. 19. The air sterilizer according to claim 17, characterized in that: The toggle lever includes a toggle lever body and a toggle lever handle; Wherein, the toggle lever main body and the toggle lever handle are respectively arranged on two sides of the cover plate main body. 20. The air sterilizer according to claim 17, characterized in that: When the self-locking power-off device for quick opening is in the locked state, the movable limit buckle is recessed in the main body of the cover, or flush with one end of the main body of the cover. 21. The air sterilizer according to claim 19, characterized in that: The self-locking structure also includes a hook of the self-locking mechanism, and one end of the hook of the self-locking mechanism is rotatably connected to the toggle lever. 22. The air sterilizer according to claim 20, characterized in that: The self-locking structure is made of metal material. 23. The air sterilizer according to claim 21, characterized in that: When an external force acts on the toggle lever to drive the self-locking mechanism from a non-locking state to a locked state, the magnet is used to trigger the disconnection of the control circuit adjacent to the quick-open self-locking power-off device, including, when External force acts on the toggle lever, the toggle lever drives the self-locking mechanism, the self-locking mechanism changes from the non-locking state to the locked state, and the self-locking mechanism generates displacement, which drives the displacement of the magnet on the movable limit buckle, and the magnet is far away from the The Hall sensor on the control circuit triggers the voltage drop of the Hall sensor, so that the circuit is powered off. 24. The air sterilizer according to claim 19, characterized in that: The cover body also includes a stop mechanism; The stop mechanism is used for hooking the self-locking mechanism when the self-locking mechanism is locked; and releasing the self-locking mechanism when the self-locking mechanism is not locked. 25. The air sterilizer according to claim 24, characterized in that: The stop mechanism is located between two springs. 26. The air sterilizer according to claim 25, characterized in that: The stop mechanism includes a main body located between the two springs, a first side part, a second side part located on both sides of the main body and adjacent to the two springs, and a connection between the first and second side parts. connection between.