CN109185995B

CN109185995B - Air sterilizer

Info

Publication number: CN109185995B
Application number: CN201811171502.5A
Authority: CN
Inventors: 夏鑫强; 黄海
Original assignee: Opple Lighting Co Ltd; Suzhou Op Lighting Co Ltd
Current assignee: Opple Lighting Co Ltd; Suzhou Op Lighting Co Ltd
Priority date: 2018-10-09
Filing date: 2018-10-09
Publication date: 2022-03-08
Anticipated expiration: 2038-10-09
Also published as: CN109185995A

Abstract

The present invention relates to a sterilizing air duct, comprising: the air inlet, the long air duct, the air outlet and the backflow pressurizing section; the air inlet is used for receiving air to be sterilized and sterilizing the air for the first time; one end of the long air duct is communicated with the air inlet, and the other end of the long air duct is communicated with the air outlet and the backflow pressurizing section; the air outlet is positioned at the tail end of the sterilization air channel and used for directly discharging the filtered air; and one end of the backflow pressurizing section is communicated with the long air channel, and the other end of the backflow pressurizing section is communicated with the air inlet and is used for conveying part of air filtered by the long air channel to the air inlet. The sterilization air duct can realize repeated sterilization, and effectively improves the sterilization efficiency.

Description

Air sterilizer

Technical Field

The invention belongs to the field of sterilization, and particularly relates to the field of air sterilizers.

Background

With the improvement of living standard, the requirements of people on living environment are higher and higher. Bacteria, viruses, PM2.5 and other pollution sources in the air bring great troubles to urban residents, and especially the bacteria and the viruses also bring hidden troubles to the physical health of people. However, the air filter in the market has limited sterilization function or weak sterilization capability, so that an air purification device mainly having sterilization function is more and more important to improve the living environment of people, and the application of the air sterilizer is increasingly wide.

The main functions of the air sterilizer are as follows: not only can kill bacteria and viruses in the passing air so as to purify and eliminate the bacteria and viruses in the air; but also can filter various impurities harmful to human bodies in the air, such as granular substances, formaldehyde, smoke smell and the like. Generally, an air sterilizer includes a UVC light source portion for removing impurities from air, an electrical control portion, a filtering portion for continuously flowing the air through the filtering portion, and an air circulation portion disposed in an air passage of the air circulation portion for sterilizing bacteria and viruses carried in the air.

Generally, the air circulation part comprises a large-air-volume and large-air-pressure double-axial-flow fan and an air duct. Wherein, through changing the design in wind channel, can change the speed and the flow that the air flows in the air sterilizer, suitable wind channel length, wind speed, flow all will influence the ability that the air sterilizer disinfected in addition.

However, most of the air ducts of the existing air sterilizer are short air ducts with large caliber, and the purpose is to reduce the wind resistance, so that the requirements on the performance of the fan are lower, and the cost is lower. However, the acting force of the ultraviolet LED light on the air flowing through the air duct needs to be small, the acting time is not enough, and the sterilization efficiency is low.

Disclosure of Invention

The invention aims to solve the problem of low sterilization efficiency of a sterilization air duct in the prior art, and provides a novel sterilization air duct.

The technical scheme of the invention is as follows: an air sterilizer comprising: the sterilization air channel, the control circuit and the timer; air duct disinfects includes: the air inlet, the air duct, the air outlet and the backflow pressurizing section; wherein the content of the first and second substances,

the air inlet is used for receiving air to be sterilized and sterilizing the air for the first time; one end of the air duct is communicated with the air inlet, and the other end of the air duct is communicated with the air outlet and the backflow pressurizing section; the air outlet is positioned at the tail end of the sterilization air channel and used for directly discharging the filtered air; one end of the backflow pressurizing section is communicated with the air channel and the air outlet, and the other end of the backflow pressurizing section is communicated with the air inlet and used for conveying part of air filtered by the air channel to the air inlet; the air sterilizer also comprises a cover plate; the cover plate consists of a quick cover opening self-locking power-off device and a cover plate main body; wherein, quick auto-lock power failure device that uncaps includes: a poke rod; the movable limiting buckle is fixedly connected with the poke rod; the magnet is arranged on the movable limiting buckle; the self-locking mechanism is connected with the poke rod; when external force acts on the poke rod to drive the self-locking mechanism to be converted from the non-locking state to the locking state, the magnet is used for triggering the control circuit adjacent to the quick uncovering self-locking power-off device to be disconnected.

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

Further, the air intake includes HEPA filter screen subassembly, photocatalyst filter screen subassembly, UVALED lamp pearl to and biaxial flow fan.

Furthermore, UVCLED lamp beads are distributed in an air duct inner cavity of the air duct.

Furthermore, the diameter of the front section of the air duct is larger than that of the rear section of the air duct.

Furthermore, the UVALED lamp beads emit 365nm ultraviolet rays.

Furthermore, after the photocatalyst filter screen component is irradiated by ultraviolet rays emitted by UVALED, titanium dioxide in the photocatalyst filter screen component generates hole/electron pairs with oxidation capability exceeding that of a common chemical oxidant to form free radicals with strong oxidation property, and free harmful substances and microorganisms in the air are decomposed into harmless carbon dioxide and water.

Furthermore, the HEPA filter screen assembly can at least filter inhalable particles, cigarette smoke and pollen in the air.

Furthermore, the UVCLED lamp beads emit 275nm deep ultraviolet rays.

Furthermore, a flow dividing valve is arranged at an inlet of the backflow pressurizing section;

wherein, the flow divider valve is used for controlling the on-off of air entering the backflow pressurizing section.

Further, the flow dividing valve is set manually or set by default.

Further, the default of the flow dividing valve is set to be in a closed state when the sterilizing air duct is just opened, and is set to be in an open state after the set N seconds.

Furthermore, the self-locking mechanism also comprises a spring;

one end of the spring is connected with the poke rod, and the other end of the spring is connected with the cover plate main body.

Further, the number of the springs is 2.

Furthermore, the movable limiting buckle and the spring are respectively arranged at two ends of the poke rod in the moving direction, and the movable limiting buckle protrudes out of the cover plate main body when the quick-uncovering self-locking power-off device is in a non-locking state.

Further, the poke rod comprises a poke rod main body and a poke rod handle;

the poke rod main body and the poke rod handle are respectively arranged on two sides of the cover plate main body.

Further, when the quick uncovering self-locking power-off device is in a locking state, the movable limiting buckle is inwards concave in the cover plate main body or is parallel and level with one end of the cover plate main body.

Furthermore, the self-locking structure further comprises a self-locking mechanism hook, and one end of the self-locking mechanism hook is rotatably connected with the poke rod.

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

Further, when external force acts on the poke rod to drive the self-locking mechanism to be switched to a locking state from a non-locking state, the magnet is used for triggering a control circuit which is adjacent to the quick-uncovering self-locking power-off device to be switched off.

Furthermore, the cover plate main body also comprises a stop mechanism;

the stop mechanism is used for hooking the self-locking mechanism when the self-locking mechanism is locked; when the self-locking mechanism is unlocked, the self-locking mechanism is released.

Furthermore, the stop mechanism is positioned between the two springs.

Furthermore, the stop mechanism comprises a main body part positioned between the two springs, a first side part, a second side part and a connecting part, wherein the first side part and the second side part are positioned on two sides of the main body part and close to the two springs, and the connecting part is connected between the first side part and the second side part.

The invention has the beneficial effects that: the sterilizing air duct can effectively guarantee the action time and radiation intensity for killing bacteria and viruses; and multiple sterilization is realized through the backflow pressurizing section, so that the air filtered for the first time is circulated in the body for the second time, multiple sterilization is realized, and the sterilization efficiency is effectively improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a schematic structural view of an air sterilizer according to an embodiment of the present invention;

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

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

FIG. 4 is a schematic view of an air sterilizer including a timer according to an embodiment of the present invention;

FIG. 5 is a schematic view of the overall structure of the preferred air sterilizer according to the embodiment of the present invention;

FIG. 6 is a schematic diagram of a preferred cover plate structure according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of the front and back structures of a cover plate according to the preferred embodiment of the present invention;

FIG. 8 is a schematic view of the overall structure of a preferred closing device according to the embodiment of the present invention;

fig. 9 is a schematic diagram of locking and unlocking of a hook of a self-locking mechanism according to an embodiment of the invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention will be further explained with reference to the drawings.

Example one

Fig. 1 is a schematic structural diagram of a preferred air sterilizer according to an embodiment of the present invention, and as shown in fig. 1, the air sterilizer 1 includes a sterilizing air duct 11, a control circuit 12, and a user interface 13. And the control circuit 12 is electrically connected with the user interface 13 and the sterilization air duct 11 respectively, and is used for receiving a user instruction and controlling the sterilization air duct 11.

The sterilizing air duct 11 is the most important component of the air sterilizer 1, fig. 2 is a schematic structural diagram of the sterilizing air duct of the present invention, and as shown in fig. 2, the sterilizing air duct is composed of 4 parts, including an air inlet 21, an air duct 22, an air outlet 23, and a backflow pressurizing section 24.

As can be seen from the air flowing direction in fig. 2, the air to be sterilized firstly enters the air inlet 21, and an HEPA filter screen assembly 211, a photocatalyst filter screen assembly 212, a UVALED (ultraviolet light LED) lamp bead 213, and a dual-axial fan 214 are disposed in the air inlet 21.

Air entering the air inlet 21 first passes through a HEPA screen assembly 211 (high efficiency air screen assembly). HEPA screen assembly 211, made of laminated borosilicate microfiber, is white and consists of hundreds to thousands of regular pleats. HEPA filters generally have a 99.99% filtering effect on particles having a diameter of 0.3 microns or more. HEPA filters are specifically designed to remove a variety of air pollutants. Can efficiently remove inhalable particles, cigarette smoke, pollen and the like.

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

The photocatalyst filter screen component 212 is irradiated by 365nm ultraviolet rays emitted by UVALED lamp beads 213, and titanium dioxide (TiO) in the photocatalyst filter screen component 212₂) Can generate hole/electron pairs with oxidizing ability exceeding that of common chemical oxidant, form free radicals with strong oxidizing property, and decompose free harmful substances and microorganisms in the air into harmless carbon dioxide and water, thereby achieving the purposes of purifying the air, sterilizing, deodorizing, decomposing formaldehyde and the like. With TiO₂The superoxide ability of the cell can destroy cell membranes of cells to cause cytoplasm loss to cause bacterial death, and can inhibit the reproduction of bacteria such as escherichia coli, staphylococcus aureus and the like. Wherein, 365nm ultraviolet ray is sent out by UVALED lamp pearl 213 of setting in the air inlet. UVALED lamp pearl is by 12V constant current drive that steps up.

At intraoral HEPA filter screen subassembly 211 of air intake, photocatalyst filter screen subassembly 212, UVALED lamp pearl 213, constituted first barrier of disinfecting, realize disinfecting for the first time.

The air after the first sterilization passes through the biaxial airflow fan 214 with large air volume and large air pressure, so that the air can enter the air duct 22 with sufficient air volume. The double axial-flow fan 214 is formed by connecting two axial-flow fans with the same parameters in series, so that large air volume and large air pressure can be realized. The dual axial fan 214 is powered directly using a 12V adapter.

Example two

As shown in fig. 2, the air passing through the dual axial fan 214 enters the air duct 22, the diameter of the front section of the air duct 22 is greater than that of the rear section of the air duct, and the air pressure at the air outlet of the dual axial fan 214 is greater, so that the diameter of the front section of the air duct is greater than that of the rear section of the air duct, thereby effectively reducing the wind resistance, preventing the wind resistance from changing suddenly, and affecting the wind speed and the service life of the fan.

UVC lamp pearls 221 are uniformly distributed in the air duct 22 to form a second sterilization barrier, the UVC (deep ultraviolet light) led lamp pearls 221 emit 275nm deep ultraviolet light, air to be sterilized is directly irradiated by the 275nm deep ultraviolet light, the molecular structure of DNA or RNA in microbial organism cells can be destroyed by the deep ultraviolet light, growth cell death and/or regenerative cell death are/is caused, and the sterilization and disinfection effects are achieved.

Fig. 3 is a schematic view of a preferred UVCled lamp bead sterilization in the embodiment of the present invention, as shown in fig. 3, 4 UVCled lamp beads A, B, C, D are distributed in a staggered manner on the left and right sides of an air duct, ultraviolet light emitted by the UVCled lamp beads is in a fan shape in the air duct, the UVCled lamp beads are distributed in a staggered manner on the left and right sides, the 4 fan shapes are mutually crossed and have a small overlap, and when air circulates in the air duct, ultraviolet rays do not have a sterilization dead angle in an irradiation interval of the 4 lamp beads, so that sterilization efficiency is improved. 4 UVCled lamp pearls are connected through the mode of establishing ties, and 4 UVCled lamp pearls are by 12V constant current drive that steps up. When the length of the air duct is long, 8 or 12 UVCled lamp beads can be adopted, every 4 lamp beads form a group, the lamp beads in the group are in a series connection electric connection mode, and parallel electric connection modes are adopted among the groups.

As can be seen from fig. 3, the width of the air duct is h, the angle value of the ultraviolet light emitted by the lamp bead a is a, the theoretical value s of the distance between the lamp bead a and the lamp bead B in the horizontal direction is tan (a/2) × h, and the theoretical value of the distance between the lamp bead a and the lamp bead C in the horizontal direction is 2 × tan (a/2) × h. In practical application, in order to avoid dead sterilization corners, the theoretical value s of the distance between the lamp bead a and the lamp bead B in the horizontal direction is usually set to be slightly less than tan (a/2) × h.

The killing time of the deep ultraviolet rays for most of bacteria and viruses is within 1 second. The second sterilization barrier is connected in series with the first sterilization barrier through the double-axial-flow fan, so that air can be fully killed by the first sterilization barrier and the second sterilization barrier.

In the design of the air duct, the C-shaped, U-shaped or L-shaped air duct 22 with longer air duct distance is adopted, compared with the commonly used linear equal air duct, the air duct is lengthened, and the action time and the radiation intensity of 275nm deep ultraviolet light emitted by the UVC lamp beads 221 to fully act on bacteria and viruses are effectively ensured.

EXAMPLE III

As can also be seen from fig. 2, connected to the end of the air duct 22 are an air outlet 23 and a backflow pressurizing section 24, respectively, wherein the other end of the air outlet 23 is communicated with the outside air, and the other end of the backflow pressurizing section 24 is communicated with the air inlet 21.

That is, a part of the air passing through the first sterilization barrier and the second sterilization barrier passes through the air outlet 23 and is directly discharged out of the sterilization air duct; the other part enters the backflow pressurizing section 24, and the air entering the backflow pressurizing section 24 enters the air inlet 21 again through the diversion of the backflow pressurizing section 24, so that the second round of sterilization is performed, and the success rate of sterilization of the finally discharged air is greatly improved.

At the inlet of the back flow pressurizing section 24, a diverter valve 25 is provided for controlling the opening and closing of the air entering the back flow pressurizing section 24. If the user wants to improve the success rate of disinfecting of exhaust air, can open flow divider 25, let the air through the wind channel enter into backward flow pressure boost section 24, because, after opening flow divider 25, the air that enters into in the wind channel of disinfecting in the unit interval has become less, but in the unit interval, the air through disinfecting disinfects the success rate and has improved.

Example four

Fig. 4 is a schematic structural diagram of an air sterilizer including a timer according to an embodiment of the present invention, and as shown in fig. 4, the air sterilizer 4 further includes a timer 44 in addition to the sterilizing air duct 41, the control circuit 42 and the user interface 43. Wherein, a shunt valve 411 is arranged in the sterilizing air duct 41. The control circuit 42 is electrically connected to the sterilizing air duct 41, the user interface 43, and the timer 44. The control circuit 42 sends a timing instruction to the timer 44 according to the user setting or default setting, and sends an opening or closing instruction to the diverter valve 411 in the sterilizing air duct 41 after receiving the message that the timer 44 finishes timing.

For example, if the user wants to sterilize the air quickly, for example, the user just turns on the air sterilizer, the diverting valve 411 may be closed, and after a period of quick sterilization, the diverting valve 411 may be opened again to perform fine sterilization. The default setting of leaving the factory is that the shunt valve 411 is set to be closed in the first N (N is set to be 300) seconds when the sterilization device is just opened, so that the air can be rapidly sterilized, after N minutes, most of the air is sterilized in one round, the sterilizer automatically opens the shunt valve 411, the sterilization is more refined, and the success rate of the sterilization of the air is improved.

In conclusion, the sterilization air duct disclosed by the invention realizes multiple times of sterilization by adopting the modes of staggered distribution of the HEPA filter screen component, the photocatalyst filter screen component and the plurality of UVCled lamp beads, arrangement of the backflow pressurizing section between the air inlet and the air outlet and the like, and effectively improves the sterilization efficiency.

EXAMPLE five

Fig. 5 is a schematic view of the overall structure of the preferred air sterilizer of the present invention, and 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 through the intake air port 52, and after being sterilized, the air is discharged from the air sterilizer through the air outlet 51. In addition, by opening the cover plate 53, the filter screen can be replaced and the maintenance operation can be performed on the air sterilizer.

EXAMPLE six

Fig. 6 is a schematic structural diagram of a preferred cover plate according to an embodiment of the present invention, and 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-uncovering self-locking power-off device 62 comprises a poke rod 601, a movable limiting buckle 602, a magnet 603 and a self-locking mechanism 604. As shown in fig. 6, the poke rod 601 is designed into a U-shaped structure, two movable limit buckles 602 are disposed at two top ends of the U-shaped structure, and a magnet 603 is disposed on each movable limit buckle 602.

The bottom of the U-shaped structure of the poke rod 601 is provided with a self-locking mechanism 604, wherein the self-locking mechanism 604 comprises a self-locking mechanism hook 6041 and two self-locking mechanism springs 6042, one end of the self-locking mechanism hook 6041 is fixedly connected with the middle position of the bottom of the U-shaped structure of the poke rod 601 in a rotatable mode, and the self-locking mechanism hook 6041 can swing left and right in a small range by taking a connecting point as a circle center. The other end of the self-locking mechanism hook 6041 is arranged to be hook-shaped, and the self-locking mechanism hook 6041 is made of metal materials. One end of a self-locking mechanism spring 6042 is fixedly connected with the bottom of the U-shaped structure of the poke rod 601, and the other end is fixed on the cover plate main body 61. Wherein, two self-locking mechanism springs 6042 are arranged on two sides of the self-locking mechanism hook 6041.

The cover plate main body 61 comprises a fixed limit buckle 605, a stop mechanism 606 and a stop baffle 607. The stop mechanism 606 is configured to hook the stop mechanism 606 with a hook 6041 of the self-locking mechanism when the self-locking mechanism 604 is locked. And the stop baffle 607 is fixed between the cover plate main body 61 and the poke rod 601 and is used for preventing the poke rod 601 from exceeding the allowable moving distance during moving, and avoiding damage to a self-locking mechanism hook 6041 and a self-locking mechanism spring 6042 due to overlarge moving distance and other devices possibly involved in the process of moving beyond the distance.

Fig. 7 is a schematic diagram of front and back side structures of a cover plate according to an embodiment of the present invention, and as can be seen from fig. 7, the quick uncovering self-locking power-off device 62 in fig. 6 further includes a poking rod handle 702, the poking rod handle 702 is fixedly connected to the poking rod 701, and the poking rod handle 702 and the poking rod 701 are respectively disposed on two sides of the cover plate main body 703, so that when a user pokes the poking rod handle 702 to generate a displacement, the poking rod 701 is also driven to displace.

EXAMPLE seven

Fig. 8 is a schematic overall structure diagram of a covering device according to a preferred embodiment of the present invention, and 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 to the rear cover plate 81, including the following steps:

the fixed limit buckle 807 is inserted into a corresponding clamping position on the rear cover plate 81;

the pulling rod handle 702 in fig. 7 is pulled by force, so that the pulling rod 801 generates displacement towards the direction of the fixed limit buckle 807, the self-locking mechanism spring 805 is compressed, the self-locking mechanism hook 804 hooks the stop mechanism 806, the movable 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 covered with the rear cover plate 81.

Under the condition that the cover plate 82 and the rear cover plate 81 are ensured to be covered, the poke rod handle is continuously poked towards the fixed limit buckle 807 direction, the self-locking mechanism hook 804 is separated from the stop mechanism 806, the self-locking mechanism spring 805 is stretched, the poke rod 801 moves towards the direction opposite to the fixed limit buckle 807 direction, the movable limit buckle 802 clamps the corresponding clamping position on the rear cover plate 81, and the cover plate installation is completed at the moment.

The magnetic field of the magnet 803 provided on the movable limit catch 802 is directed to the hall sensor 810 provided on the control circuit 12 in fig. 1, so that the circuit remains open. 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 a closed state.

The user detaches the cover plate 82 from the rear cover plate 81, including the steps of:

a user dials the poke rod handle 702 in fig. 7, so that the poke rod 801 generates displacement towards the direction of the fixed limit buckle 807, the self-locking mechanism spring 805 is compressed, the self-locking mechanism hook 804 hooks the stop mechanism 806, the movable 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 clamping position of the rear cover plate 81;

because the magnet 803 is installed on the movable limit buckle 802, when the movable limit buckle 802 is separated from the position of the back cover plate 81, the magnet 803 is far away from the hall sensor arranged on the control circuit 12 in fig. 1, the hall sensor starts to time, if the magnet 803 is still far away from the hall sensor within a preset time, the voltage of the hall sensor is reduced, and the circuit is powered off;

a user pulls the poke rod handle outwards perpendicular to the cover plate 82, so that the movable limiting buckle 802 of the cover plate 82 is far away from the rear cover plate 81; the user can move out the fixed limit buckle 807 of the cover plate 82 from the corresponding position of the rear cover plate 81, namely, the cover plate 82 is detached from the rear cover plate 81.

The device that closes of lid in this embodiment can be used to the air sterilizer field, when needs are changed the filter screen in the air sterilizer, pulls down the apron, is about to the circuit disconnection of air sterilizer, and UVC lamp pearl is closed, avoids the apron to open the back, and the harm effect of UVC light to the human body. In addition, the cover plate is detached to disconnect the circuit, so that the danger of live operation can be avoided when a user performs operation such as maintenance on the inside of the device.

Example eight

Fig. 9 is a schematic diagram illustrating locking and unlocking of a hook of a self-locking mechanism according to a preferred embodiment of the present invention, and as shown in fig. 9, the stop mechanism 91 includes a main body 901 located between two springs, a first side 902 and a second side 903 located on two sides of the main body and adjacent to the two springs, and a connecting portion 904 connected between the first side and the second side. The main body 901 has a guiding portion 905 extending obliquely downward from the second side 903 toward the first side 902, an extending portion 906 extending downward from the guiding portion 905 and parallel to the first side 902, an L-shaped stopping portion 907 extending obliquely upward from the end of the extending portion 906 toward the second side 903, and an L-shaped guiding portion 908 continuing to extend obliquely upward. The connecting portion 904 includes a first slope 910 connected to the first side portion 902 and inclined downward from the first side portion 902 toward the second side portion 903; and a lowest point first valley point 911 of the first ramp surface 910; a second ramp 912 unconnected to the first side portion 902 and inclined downwardly from the first side portion 902 toward the second side portion 903, and a lowest second valley point 913 of the second ramp 912.

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

(1) the handle of the poke rod is poked by external force to drive the hook 909 of the self-locking mechanism to move towards the direction of the stop mechanism 91;

(2) the hook 909 contacts the guide 905 and slides obliquely downward along the guide 905 to the intersection of the guide 905 and the extension 906;

(3) the hook 909 enters the channel between the extension 906 and the first side 902 and slides down the channel to contact the first slope 910 of the connection 904;

(4) under the driving of the external force, the hook 909 slides to the first valley point 911 along the first slope 910, at this time, although the external force still acts, the hook does not move any more;

(5) the external force applied to the hook 909 stops, and under the driving of the resilience force of the spring, the hook 909 moves from the first valley point 911 to the main body portion 901, contacts the stopping portion 907, continues to slide upward along the slope of the stopping portion 907 to reach the highest point of the stopping portion 907, i.e., the stopping point 914, and completes the locking of the self-locking mechanism.

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

(1) when the self-locking mechanism needs to be unlocked, the poke rod handle is poked by external force to drive the self-locking mechanism hook 909 to move from the stop point 914 to the connecting part 904;

(2) the hook 909 contacts the second slope 912 and continues to slide downwards to the second valley point 913 under the continuous driving of the external force;

(3) after the hook 909 reaches the second valley point 913, the hook 909 cannot move any more although the hook 909 is still driven by the external force;

when the external force applied to the hook 909 is stopped, the hook 909 moves from the second valley point 913 toward the main body 901 under the urging force of the spring, contacts the lead-out portion 908, slides upward along the lead-out portion 908, enters a passage between the lead-out portion 908 and the second side portion 903, and slides out of the stopper mechanism 91, thereby completing unlocking.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. An air sterilizer comprising: the sterilization air channel, the control circuit and the timer; it is characterized in that the sterilizing air duct comprises:

the air inlet, the air duct, the air outlet and the backflow pressurizing section; wherein the content of the first and second substances,

the air inlet is used for receiving air to be sterilized and sterilizing the air for the first time;

one end of the air duct is communicated with the air inlet, and the other end of the air duct is communicated with the air outlet and the backflow pressurizing section;

the air outlet is positioned at the tail end of the sterilization air channel and used for directly discharging the filtered air;

one end of the backflow pressurizing section is communicated with the air channel and the air outlet, and the other end of the backflow pressurizing section is communicated with the air inlet and used for conveying part of air filtered by the air channel to the air inlet;

the air sterilizer also comprises a cover plate;

the cover plate consists of a quick cover opening self-locking power-off device and a cover plate main body;

wherein, quick auto-lock power failure device that uncaps includes: a poke rod;

the movable limiting buckle is fixedly connected with the poke rod;

the magnet is arranged on the movable limiting buckle;

the self-locking mechanism is connected with the poke rod;

when external force acts on the poke rod to drive the self-locking mechanism to be converted from the non-locking state to the locking state, the magnet is used for triggering the control circuit adjacent to the quick uncovering self-locking power-off device to be disconnected.

2. The air sterilizer of claim 1, wherein:

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

3. The air sterilizer of claim 1, wherein:

the air intake includes HEPA filter screen subassembly, photocatalyst filter screen subassembly, UVALED lamp pearl to and biax flow fan.

4. An air sterilizer as claimed in claim 3, wherein:

UVCLED lamp beads are distributed in an air duct inner cavity of the air duct.

5. An air sterilizer as claimed in claim 3, wherein:

the diameter of the front section of the air duct is larger than that of the rear section of the air duct.

6. An air sterilizer as claimed in claim 3, wherein:

the UVALED lamp beads emit 365nm ultraviolet rays.

7. An air sterilizer as claimed in any one of claims 3, 5 to 6, wherein:

after the photocatalyst filter screen component is irradiated by ultraviolet rays emitted by UVALED, titanium dioxide in the photocatalyst filter screen component generates hole/electron pairs with oxidation capability higher than that of a common chemical oxidant to form free radicals with strong oxidation property, and free harmful substances and microorganisms in the air are decomposed into harmless carbon dioxide and water.

8. An air sterilizer as claimed in claim 3, wherein:

the HEPA filter screen component can at least filter inhalable particles, cigarette smoke and pollen in the air.

9. An air sterilizer as claimed in claim 4, wherein:

the UVCLED lamp beads emit 275nm deep ultraviolet rays.

10. The air sterilizer of claim 1, wherein:

a flow dividing valve is arranged at an inlet of the backflow pressurizing section;

11. An air sterilizer as claimed in claim 10, wherein:

the flow dividing valve is set manually or by default.

12. An air sterilizer as claimed in claim 11, wherein:

the default of the flow dividing valve is set to be in a closed state when the sterilizing air duct is just opened, and the default of the flow dividing valve is set to be in an open state after the set N seconds.

13. The air sterilizer of claim 1, wherein:

the control circuit is respectively connected with a timer and the sterilizing air duct splitter valve;

the control circuit is used for receiving a user or default instruction, sending an instruction for starting to time for N seconds to the timer, and sending an opening or closing instruction to the shunt valve when receiving a timer timing end message.

14. The air sterilizer of claim 1, wherein:

the self-locking mechanism also comprises a spring;

15. An air sterilizer as claimed in claim 14, wherein:

the number of the springs is 2.

16. An air sterilizer as claimed in claim 14, wherein:

the movable limiting buckle and the spring are respectively arranged at two ends of the poke rod in the moving direction, and the movable limiting buckle protrudes out of the cover plate main body when the quick-uncovering self-locking power-off device is in a non-locking state.

17. An air sterilizer as claimed in claim 15, wherein:

the poke rod comprises a poke rod main body and a poke rod handle;

18. An air sterilizer as claimed in claim 15, wherein:

when the quick uncovering self-locking power-off device is in a locking state, the movable limiting buckle is inwards concave in the cover plate main body or is parallel and level with one end of the cover plate main body.

19. An air sterilizer as claimed in claim 17, wherein:

the self-locking mechanism further comprises a self-locking mechanism hook, and one end of the self-locking mechanism hook is rotatably connected with the poke rod.

20. An air sterilizer as claimed in claim 18, wherein:

the self-locking mechanism is made of metal materials.

21. An air sterilizer as claimed in claim 19, wherein:

when external force acts on the poking rod to drive the self-locking mechanism to be switched from a non-locking state to a locking state, the magnet is used for triggering a control circuit adjacent to the quick uncovering self-locking power-off device to be switched off.

22. An air sterilizer as claimed in claim 17, wherein:

the cover plate main body also comprises a stop mechanism;

23. An air sterilizer as claimed in claim 22, wherein:

the stop mechanism is positioned between the two springs.

24. The air sterilizer of claim 23, wherein:

the stop mechanism comprises a main body part positioned between the two springs, a first side part, a second side part and a connecting part, wherein the first side part and the second side part are positioned on two sides of the main body part and close to the two springs, and the connecting part is connected between the first side part and the second side part.