CN216744763U

CN216744763U - Air purifier

Info

Publication number: CN216744763U
Application number: CN202122942108.0U
Authority: CN
Inventors: 郭岩峰; 张语倩
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-06-14
Anticipated expiration: 2031-11-26

Abstract

The utility model relates to the technical field of air purification, and provides an air purifier, which comprises a first shell, a second shell, a sterilization module, a filter screen and an air exhaust element, wherein the first shell is internally provided with a purification cavity, and the peripheral wall of the first shell is provided with an air inlet; an air outlet cavity is formed in the second shell, and an air outlet is formed in the peripheral wall of the second shell; the sterilization module is arranged in the purification cavity; the side wall of the filter screen close to the sterilization module is provided with a photocatalyst coating. The utility model provides an air purifier's beneficial effect is: the air exhaust element guides airflow of the surrounding environment to sequentially pass through the air inlet, the filter screen, the purification cavity, the air outlet cavity and the air outlet, the ultraviolet light source is cooled by the airflow formed by the air exhaust element, the sterilization module is the ultraviolet light source and does not comprise a metal radiator, the height size of the sterilization module is reduced, the space occupying the purification cavity is reduced, and the technical problem that the air purifier in the related art is low in purification efficiency is solved.

Description

Air purifier

Technical Field

The utility model belongs to the technical field of the air purification technique and specifically relates to an air purifier is related to.

Background

The household air purifier on the market mainly has the functions of sterilizing, removing formaldehyde and removing dust. Such air purifiers generally use ozone technology, anion technology or activated carbon filter screens to remove germs, formaldehyde, dust and the like. Wherein, the ozone has super strong sterilization function, but the ozone is harmful to human body, and people can not be indoors when in use; the negative ions have a common sterilization effect, can release ozone during working, have short survival time, need to be released continuously, and are not beneficial to energy conservation; the activated carbon filter screen only adsorbs formaldehyde, can not decompose formaldehyde, and along with the extension of live time, inhale formaldehyde effect and reduce gradually, if not change the filter screen in time, can cause secondary pollution.

In the related technology, a part of air purifiers are internally provided with UVC sterilization modules and TiO₂A photocatalyst cylindrical ring. Wherein, TiO₂The photocatalyst cylindrical ring is wrapped around the UVC sterilization module. UVC refers to short-wave ultraviolet rays, namely the UVC wave band of the ultraviolet rays, has the wavelength of 200-275 nm, and is also called short-wave sterilizing ultraviolet rays. TiO 2₂The photocatalyst cylindrical ring can decompose VOC (volatile organic compounds) in the air under the excitation of the UVC sterilization module, such as the capability of decomposing VOC of formaldehyde, smoke smell, odor and the like.

Specifically, the UVC sterilization module includes a plurality of UVC LED lamps and a metal heat sink 4, and the plurality of UVC LED lamps are mounted on a side end surface of the metal heat sink. The UVC sterilization module is large in height and size and large in occupied space, so that the effective space of the air purifier for purifying air is reduced, and the purification efficiency is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an air purifier aims at solving the technical problem that the air purifier purification efficiency among the correlation technique is low.

In order to achieve the above object, the utility model adopts the following technical scheme: an air purifier, comprising:

the air purifier comprises a first shell, a second shell and a third shell, wherein a purification cavity is arranged inside the first shell, and an air inlet communicated with the purification cavity is formed in the peripheral wall of the first shell;

the second shell is arranged at the top of the first shell, an air outlet cavity communicated with the purification cavity is formed in the second shell, and an air outlet communicated with the air outlet cavity is formed in the peripheral wall of the second shell;

the sterilization module is arranged in the purification cavity and is an ultraviolet light source capable of emitting ultraviolet light;

the filter screen is arranged in the first shell and positioned between the air inlet and the purification cavity, and a photocatalyst coating is arranged on the side wall of the filter screen close to the sterilization module, so that the photocatalyst coating can receive ultraviolet light emitted by the ultraviolet light source;

and the air exhaust element is arranged in the air outlet cavity and used for guiding airflow to sequentially pass through the air inlet, the filter screen, the purification cavity, the air outlet cavity and the air outlet.

In one embodiment, the ultraviolet light source comprises a UVC light source and a UVA light source.

In one embodiment, the first housing and/or the second housing is fitted with an air quality sensor assembly for detecting ambient air quality, the air quality sensor assembly including at least one of a VOC sensor, a PM2.5 sensor, a temperature sensor, and a humidity sensor.

In one embodiment, the air purifier further comprises a display unit, the display unit is mounted on the first shell or the second shell, and the display unit is electrically connected with the air quality sensor assembly.

In one embodiment, the air purifier further comprises an illumination sensor, the illumination sensor is mounted on the first shell or the second shell and used for detecting the illumination intensity of the surrounding environment, the illumination sensor is electrically connected with the display unit, and the illumination sensor is provided with a function of controlling the display unit to work or extinguish according to the illumination intensity of the surrounding environment.

In one embodiment, the first casing has an installation opening for the filter screen to enter and exit the purification cavity, the air purifier further comprises a cover plate, a micro switch and a power supply assembly, the cover plate is detachably installed on the first casing to close the installation opening, the power supply assembly is used for supplying electric energy to the sterilization module, the air extraction element and the air quality sensor assembly, the micro switch is used for detecting the switch state of the cover plate, and the micro switch is provided with a function of controlling the on-off of the power supply assembly according to the switch state of the cover plate.

In one embodiment, the air purifier further comprises a controller, the controller is electrically connected with the sterilization module and the air pumping element respectively, and the controller is used for controlling the working states of the sterilization module and the air pumping element.

In one embodiment, the air purifier further comprises a middle plate, the top of the first casing is mounted on the lower surface of the middle plate, the bottom of the second casing is mounted on the upper surface of the middle plate, and the middle plate is provided with a first through hole for communicating the purifying cavity and the air outlet cavity.

In one embodiment, the air purifier further comprises a base, the first shell comprises a first shell, a support rod, a filter screen radial limiting plate and a filter screen axial limiting plate, the filter screen radial limiting plate is mounted on the base, the filter screen radial limiting plate is provided with a stop block for limiting the radial movement of the filter screen, the outer wall of the filter screen abuts against the stop block, and the bottom of the filter screen is mounted on the filter screen axial limiting plate; the filter screen axial limiting plate is mounted on the filter screen radial limiting plate in a height-adjustable manner, so that the top of the filter screen abuts against the middle plate; the one end of bracing piece with the intermediate lamella is connected, the other end of bracing piece with the base is connected, the middle part of first shell with the bracing piece is connected, the one end of first shell with the second casing is connected, the other end of first shell with the radial limiting plate of filter screen is connected.

In one embodiment, the second shell comprises a second shell, a diversion shell and a top plate, the air outlet cavity is formed inside the diversion shell, one end of the diversion shell is connected with the top plate, the top plate is provided with the air outlet, the other end of the diversion shell is connected with the middle plate, and the middle of the diversion shell is connected with the second shell.

The utility model provides an air purifier's beneficial effect is: the air current that the component guided the surrounding environment bleeds passes through the air intake in proper order, the filter screen, purify the chamber, air-out chamber and air outlet, wherein, the filter screen removes dust to the air current, purify the PM2.5 of air current, ultraviolet ray that ultraviolet light source sent disinfects the air current, photocatalyst coating decomposes the VOC in the air current under the computer lab of ultraviolet ray simultaneously, the realization removes dust to the gas of surrounding environment, purify processing such as disinfection and getting rid of VOC, utilize the air current that the component formed of bleeding to dispel the heat to ultraviolet light source, the module of disinfecting is ultraviolet light source, do not include metal radiator, the height dimension who disinfects the module has been reduced, reduce and occupy the space that purifies the chamber, the technical problem that the air purifier purification efficiency among the correlation technique is low has been solved, thereby improved and purified the effective space that the chamber holds gas, the purification efficiency of air purifier has been improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions 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 without inventive labor.

Fig. 1 is a schematic structural diagram of an air purifier provided by an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the air purifier of FIG. 1 taken along line A-A;

FIG. 3 is a rear view of the air purifier of FIG. 1;

FIG. 4 is a cross-sectional view of the air purifier of FIG. 3 taken along line B-B;

FIG. 5 is an enlarged view of a portion of FIG. 4;

FIG. 6 is a top view of the air purifier of FIG. 1;

FIG. 7 is an internal schematic view of the first housing of FIG. 1;

FIG. 8 is a schematic view of the installation of the sterilization module of FIG. 7;

FIG. 9 is a further view of the base of FIG. 7;

fig. 10 is an internal schematic view of the second housing of fig. 1.

Wherein, in the figures, the various reference numbers:

100. a first housing; 101. a purification chamber; 102. an air inlet; 110. a first housing; 120. a support bar; 121. a third buckle part; 130. the radial limiting plate of the filter screen; 131. a stopper; 132. a card slot; 133. adjusting a toggle button; 140. the axial limiting plate of the filter screen;

200. a second housing; 201. an air outlet cavity; 202. an air outlet; 210. a second housing; 211. a second through hole; 212. a third through hole; 213. a fourth via hole; 214. a fifth through hole; 215. a first fastening part; 220. a guide shell; 221. a second fastening part; 230. a top plate; 231. switching a key;

300. a sterilization module; 310. a lamp panel; 320. an LED lamp;

400. a filter screen;

500. an air extraction element;

610. a VOC sensor; 620. a PM2.5 sensor; 630. a temperature and humidity sensor; 640. a display unit; 650. an illumination sensor; 670. a power supply component; 680. a controller;

710. a cover plate; 711. a handle; 720. a middle plate; 721. a first through hole; 722. mounting a bracket; 730. a base; 731. a rubber sleeve.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1 to 6, an air purifier according to an embodiment of the present invention will now be described. The air purifier includes a first housing 100, a second housing 200, a sterilization module 300, a filter screen 400, and an air pumping element 500.

The first casing 100 has a cleaning chamber 101 inside, and the peripheral wall of the first casing 100 is provided with an air inlet 102 communicating with the cleaning chamber 101. Specifically, the four side walls of the first casing 100 are provided with the air inlets 102, so that the air inlet range is expanded, and the purification efficiency is improved. The number of the air inlets 102 is multiple, and the multiple air inlets 102 are distributed on the side wall of the first casing 100 in a matrix. Generally, the intake vent 102 is polygonal (e.g., regular hexagonal), circular, oval, or irregular in shape. The diameter range of the air inlet 102 is 0.5 mm-3.0 mm.

The second casing 200 is mounted on the top of the first casing 100, an air outlet chamber 201 communicated with the purification chamber 101 is arranged inside the second casing 200, and an air outlet 202 communicated with the air outlet chamber 201 is arranged on the peripheral wall of the second casing 200. Specifically, the air outlet 202 is located at the top of the second housing 200.

The sterilization module 300 is installed in the purification chamber 101, and the sterilization module 300 is an ultraviolet light source capable of emitting ultraviolet light.

The filter screen 400 is installed in the first casing 100 and located between the air inlet 102 and the purification chamber 101, and a photocatalyst coating is disposed on a side wall of the filter screen 400 close to the sterilization module 300, so that the photocatalyst coating can receive ultraviolet light emitted by the ultraviolet light source.

Specifically, filter screen 400 is cylindrical structure, PM2.5 in can 360 air-purifying, and the fine particle that effectively reduces in the air current gathers at the photocatalyst coating, promotes the photocatalyst coating and gets rid of VOC's efficiency. The sterilization module 300 is located in the middle of the filter screen 400, so that the filter screen 400 can prevent the ultraviolet light emitted from the ultraviolet light source from leaking outside.

Optionally, the filter screen 400 is a high efficiency filter screen. The photocatalyst coating is TiO₂And (3) coating a photocatalyst.

The air extracting element 500 is installed in the air outlet cavity 201, and the air extracting element 500 is used for guiding the air flow to sequentially pass through the air inlet 102, the filter screen 400, the purifying cavity 101, the air outlet cavity 201 and the air outlet 202.

Optionally, the air extraction element 500 is a fan or suction fan.

The air purifier that this embodiment provided's beneficial effect is: the air extracting element 500 works to guide the airflow of the surrounding environment to sequentially pass through the air inlet 102, the filter screen 400, the purifying cavity 101, the air outlet cavity 201 and the air outlet 202, and then return to the surrounding environment. Wherein, filter screen 400 removes dust to the air current, the ultraviolet ray that ultraviolet light source sent is disinfected to the air current, photocatalyst coating decomposes the VOC in the air current under the activation of ultraviolet ray, the realization removes dust to the gas of surrounding environment, disinfect and get rid of purification treatments such as VOC, and utilize the air current that air bleed component 500 formed to dispel the heat to ultraviolet light source, sterilization module 300 is ultraviolet light source, do not include the metal radiator, the height dimension who disinfects module 300 has been reduced, reduce the space that occupies purification chamber 101, the technical problem that air purifier purification efficiency among the correlation technique is low has been solved, thereby improved and purified chamber 101 and held gaseous effective space, air bleed component 500 accelerates the air current circulation simultaneously, air purifier's purification efficiency has been improved.

Referring to fig. 4 and 8, the ultraviolet light source includes a UVC light source and a UVA light source in terms of the light source type. Wherein, the UVC light source can emit UVC wave band with the wavelength of 200 nm-275 nm, namely short-wave ultraviolet. The short-wave ultraviolet rays have good sterilization effect. The UVA light source can emit UVA wave band with the wavelength of 320 nm-400 nm, namely long-wave ultraviolet rays. Compared with short-wave ultraviolet rays, the long-wave ultraviolet rays can more effectively activate the photocatalyst and improve the efficiency of decomposing VOC.

Structurally, the uv light source includes a lamp panel 310 and an LED lamp 320 mounted on the lamp panel 310.

Wherein, in order to ensure that the air flowing through the filter screen 400 can be irradiated by the ultraviolet light, the sterilization module 300 is disposed at the lowermost end of the filter screen 400. Since the light emitting angle of the LED lamp 320 is 120 ° at maximum, the number of the LED lamps 320 is plural, and the plurality of LED lamps 320 are spaced around the axis of the first housing 100 to irradiate the purification chamber 101 at 360 °.

Referring to fig. 2, 4 and 7, the air purifier further includes a middle plate 720, the top of the first casing 100 is mounted on the lower surface of the middle plate 720, the bottom of the second casing 200 is mounted on the upper surface of the middle plate 720, and the middle plate 720 has a first through hole 721 for communicating the purifying chamber 101 and the air outlet chamber 201. The first and

second housings

100 and 200 are coupled together by an intermediate plate 720.

It is understood that in other embodiments, the first housing 100 and the second housing 200 may be directly connected. For example, the first and

second housings

100 and 200 are integrally formed.

Referring to fig. 5, the air purifier also includes a power supply component 670. The power supply assembly 670 is used to provide power to the sterilization module 300 and the pumping element 500.

Optionally, the power supply assembly 670 is a national standard 220V three-socket power supply module, and can communicate with an external power supply through an interface.

Referring to fig. 8, the air purifier further includes a base 730. The first housing 100 is mounted on the base 730. In order to ensure that the air purifier does not generate any noise when moving, the rubber sleeve 731 is sleeved on the fixing foot of the base 7306.

Wherein the power supply assembly 670 is mounted to the base 730. Specifically, the power supply assembly 670 is fixedly mounted on the base 730 by fasteners, or the power supply assembly 670 is snapped onto the base 730.

Referring to fig. 2, 4, 7 and 8, the first casing 100 includes a first outer shell 110, a support rod 120, a screen radial direction limiting plate 130 and a screen axial direction limiting plate 140. The radial limiting plate 130 of filter screen is installed in base 730, and the radial limiting plate 130 of filter screen is provided with the dog 131 that is used for restricting the radial movement of filter screen 400, and the outer wall of filter screen 400 supports and leans on dog 131 to filter screen 400 radially receives the restriction, realizes radial positioning. Specifically, the stopper 131 is attached to the outer wall of the filter screen 400, and the stopper 131 has an arc shape.

The bottom of the filter screen 400 is mounted to the filter screen axial limiting plate 140. Filter screen axial limiting plate 140 is installed in filter screen radial limiting plate 130 with adjustable height to make the top of filter screen 400 rise and lean on intermediate plate 720, thereby intermediate plate 720 and filter screen axial limiting plate 140 centre gripping fixed filter screen 400 realize that filter screen 400's axial is spacing.

Specifically, the screen radial restraining plate 130 has a catch 132. An adjusting toggle button 133 is movably arranged in the clamping groove 132. Adjust and dial button 133 and be connected with filter screen axial limiting plate 140, adjust and dial button 133 and rotate 90, can drive filter screen axial limiting plate 140 and rise and predetermine the height, if 10mm to fix the centre gripping of filter screen 400 between intermediate lamella 720 and filter screen axial limiting plate 140. The adjusting toggle button 133 rotates 90 degrees in the opposite direction, and then the filter screen axial limiting plate 140 is driven to descend by a preset height, the filter screen 400 is separated from the middle plate 720, the axial limiting of the filter screen 400 is removed, and the filter screen 400 is convenient to detach and maintain.

One end of the supporting rod 120 is connected to the middle plate 720, and the other end of the supporting rod 120 is connected to the base 730, so as to improve the strength of the first housing 100. Specifically, the supporting rod 120 is fixedly connected to the middle plate 720 and the base 730 through screws.

The interior of the first housing 110 forms a purification chamber 101, and the side wall of the first housing 110 is provided with an air inlet 102. One end of the first outer shell 110 is connected to the second housing 200, the other end of the first outer shell 110 is connected to the radial filter screen limiting plate 130, and the middle of the first outer shell 110 is connected to the support rod 120, so as to improve the installation strength of the first outer shell 110.

Specifically, the first casing 110 is respectively clamped with the second casing 200 and the filter screen radial direction limiting plate 130. The supporting rod 120 is provided with a third buckling part 121, and the middle part of the first housing 110 is buckled to the supporting rod 120 through the third buckling part 121.

Referring to fig. 2, 6 and 10, the second housing 200 includes a second outer case 210, a baffle case 220 and a top plate 230. An air outlet cavity 201 is formed inside the guide shell 220, one end of the guide shell 220 is connected with the top plate 230, the top plate 230 has an air outlet 202, the other end of the guide shell 220 is connected with the middle plate 720, and the middle part of the guide shell 220 is connected with the second housing 210.

Specifically, both ends of the guide shell 220 are open, one end of the guide shell 220 is clamped with the top plate 230, and the other end of the guide shell 220 is connected to the middle plate 720 through a fastener. The second housing 210 is provided with a first fastening part 215, and the middle part of the baffle housing 220 is provided with a second fastening part 221. The second fastening portion 221 is fastened to the first fastening portion 215, and the middle portion of the baffle shell 220 is fastened to the second housing 210. The air-extracting member 500 is installed inside the guide shell 220.

Referring to fig. 4, the air purifier further includes a controller 680, the controller 680 is electrically connected to the sterilization module 300 and the air pumping device 500, respectively, and the controller 680 is used to control the working states of the sterilization module 300 and the air pumping device 500.

Specifically, the controller 680 controls the start and stop of the sterilization module 300 as well as the operating power. The controller 680 controls the start and stop of the pumping element 500 as well as the operating power.

Specifically, referring to fig. 4 and 6, the top plate 230 is mounted with a switch button 231. The switch button 231 is electrically connected to the controller 680. The operator controls the air purifier to start and stop through the switch button 231.

Specifically, at least one of the first and

second housings

100 and 200 is mounted with an air quality sensor assembly for detecting the quality of ambient air. The air quality sensor assembly includes at least one of a VOC sensor 610, a PM2.5 sensor 620, a temperature sensor, and a humidity sensor. The VOC sensor 610 is used to monitor the VOC concentration of the ambient air in real time, so as to adjust the purification rate of the air purifier and realize the rapid purification of the air. The PM2.5 sensor 620 is used for monitoring the PM2.5 concentration of the ambient air in real time, so that the purification rate of the air purifier is adjusted, and the air is rapidly purified. The temperature sensor and the humidity sensor may be separately arranged, or may be integrated, such as the temperature and humidity sensor 630. The temperature and humidity sensor 630 is used to monitor the temperature and humidity of the ambient air in real time.

In the embodiment shown in fig. 4, the air quality sensor assembly is mounted to the second housing 200. Specifically, referring to fig. 3 and 4, the VOC sensor 610, the PM2.5 sensor 620 and the temperature and humidity sensor 630 are mounted on the outer wall of the baffle shell 220, and the second housing 210 has a second through hole 211 corresponding to the VOC sensor 610 in position, a third through hole 212 corresponding to the PM2.5 sensor 620 in position, and a fourth through hole 213 corresponding to the temperature and humidity sensor 630 in position. The second housing 210 can protect the VOC sensor 610, the PM2.5 sensor 620, and the temperature and humidity sensor 630, while the second through hole 211, the third through hole 212, and the fourth through hole 213 can guide the air of the surrounding environment to the corresponding sensors.

Specifically, the controller 680 is electrically connected to the VOC sensor 610, the PM2.5 sensor 620, and the temperature/humidity sensor 630, respectively, so as to control the operating state of the air purifier according to the air quality of the surrounding environment.

Referring to fig. 4, the air purifier further includes a display unit 640, and the display unit 640 is mounted on the first casing 100 or the second casing 200. The display unit 640 is electrically connected to the air quality sensor assembly. The display unit 640 is configured with the capability of displaying the air quality sensor assembly detection data. Specifically, the display unit 640 is an OLED (Organic Light-Emitting Diode) touch panel.

Referring to fig. 10, the display unit 640 is mounted on the outer wall of the pod 220. The second housing 210 has a fifth through hole 214 at a position corresponding to the position of the display unit 640.

Referring to fig. 10, the air purifier further includes an illumination sensor 650, the illumination sensor 650 is installed in the first casing 100 or the second casing 200, the illumination sensor 650 is used for detecting the illumination intensity of the surrounding environment, the illumination sensor 650 is electrically connected to the display unit 640, and the illumination sensor 650 is configured with a function of controlling the display unit 640 to operate or shut down according to the illumination intensity of the surrounding environment.

Specifically, when the air purifier is in the bedroom night time operation mode, the air purifier actively turns off the display unit 640 according to the detected weak illumination intensity to provide a better sleeping environment.

Referring to fig. 3 and 5, the first housing 100 has a mounting opening for the filter screen 400 to enter and exit the purifying chamber 101, and the air purifier further includes a cover 710 and a micro switch, wherein the cover 710 is detachably mounted on the first housing 100 to close the mounting opening. The operator can replace and maintain the filter screen 400 by detaching the cover plate 710. The micro switch is used for detecting the switch state of the cover plate 710, and the micro switch is provided with a function of controlling the on-off of the power supply assembly 670 according to the switch state of the cover plate 710. When the cover plate 710 is opened, the micro switch disconnects the power supply assembly 670 and the air purifier does not work, so that the safety risk brought to an operator by taking and installing the cover plate 710 by misoperation is prevented.

Specifically, the cover plate 710 is provided with a pull 711 to facilitate removal of the cover plate 710 by an operator.

Specifically, referring to fig. 7, the middle plate 720 is provided with a mounting bracket 722 for mounting the micro switch.

In the air purifier provided in this embodiment, the power supply assembly 670 is further configured to supply power to the PM2.5 sensor 620, the VOC sensor 610, the temperature/humidity sensor 630, the illumination sensor 650, the display unit 640, the controller 680, and the like. The air extracting element 500, the sterilization module 300, the PM2.5 sensor 620, the VOC sensor 610, the temperature and humidity sensor 630, the illumination sensor 650 and the display unit 640 are respectively electrically connected with the controller 680, and the controller 680 respectively controls the air extracting element 500 and the sterilization module 300 to work according to signals fed back by the VOC sensor 610, so that the normal work of the air purifier is realized; the air extracting elements 500 are respectively controlled to work according to signals fed back by the PM2.5 sensor 620, so that the normal work of the air purifier is realized; the lighting or extinguishing of the display unit 640 is controlled according to a signal fed back from the illumination sensor 650.

The controller 680 is also configured to record the accumulated operating time of the air purifier in real time, calculate the service life of the filter screen 400 by the ratio of the accumulated operating time to a threshold, and control the display unit 640 to display the service life of the filter screen 400. When the threshold is reached, the display unit 640 prompts replacement of the filter screen 400.

In this embodiment, the air purifier is set to have five operation modes. The first is a silent mode, in which the pumping element 500 is operating in first gear. The second is a sleep mode, in which the pumping element 500 is operated in first gear and the display unit 640 is turned off. The third is an automatic mode, in which the operating power of the pumping element 500 and sterilization module 300 is automatically adjusted based on the air quality sensor assembly. The fourth is a fast mode, in which both the pumping element 500 and the sterilization module 300 are operated at maximum power. The fifth mode is a manual mode, in which the air quantity gear of the air extracting element 500 and the working power of the sterilization module 300 can be manually adjusted.

The controller 680 is configured with functions of controlling the display unit 640 to display the operating state of the sterilization module 300, the air state information detected by the air quality sensor assembly, the operating state of the micro switch, the gear of the air pumping element 500, the service life of the filter screen 400, and the operating mode of the purifier.

The controller 680 is also configured with a function of controlling the display unit 640 to prompt the degree of air pollution according to a signal fed back from the air quality sensor assembly. The display unit 640 is displayed using different colors of the indication bars according to the degree of air pollution.

The controller 680 is also configured with a function of being communicatively connected with an external terminal and a server through a communication network. Cell-phone APP can realize the communication with controller 680, can real-time control air purifier's the mode of operation and monitoring air purifier's operating condition through cell-phone APP.

In conclusion, the embodiment provides an air purifier with the functions of sterilizing, removing VOC and filtering PM2.5, the service life is long, the purification efficiency is high (the sterilization rate is more than or equal to 99%, the VOC removal rate is more than or equal to 95%, and the dust removal rate is more than or equal to 99%), and the air purifier also has the functions of detecting the air pollution concentration and adjusting the air purification rate. The air purifier provided by the embodiment can be used in household, vehicle or office areas.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. An air purifier, its characterized in that: the air purifier includes:

and the air exhaust element is arranged in the air outlet cavity and is used for guiding airflow to sequentially pass through the air inlet, the filter screen, the purification cavity, the air outlet cavity and the air outlet.

2. The air purifier of claim 1, wherein: the ultraviolet light source comprises a UVC light source and a UVA light source.

3. The air purifier of claim 1, wherein: the first housing and/or the second housing are mounted with an air quality sensor assembly for detecting ambient air quality, the air quality sensor assembly including at least one of a VOC sensor, a PM2.5 sensor, a temperature sensor, and a humidity sensor.

4. The air purifier of claim 3, wherein: the air purifier further comprises a display unit, the display unit is installed on the first shell or the second shell, and the display unit is electrically connected with the air quality sensor assembly.

5. The air purifier of claim 4, wherein: air purifier still includes illumination sensor, illumination sensor install in first casing or the second casing, illumination sensor is used for detecting the illumination intensity of surrounding environment, illumination sensor with display element electric connection, illumination sensor disposes the illumination intensity control according to the surrounding environment the function that display element work or extinguish.

6. The air purifier of claim 3, wherein: the air purifier comprises a first shell, a filter screen, a purification cavity, a power supply assembly, a sterilization module, an air exhaust element, a micro switch and a power supply assembly, wherein the first shell is provided with a mounting hole for the filter screen to pass in and out the purification cavity, the air purifier further comprises a cover plate, a micro switch and the power supply assembly, the cover plate is detachably mounted on the first shell and closed to the mounting hole, the power supply assembly is used for providing electric energy for the sterilization module, the air exhaust element and the air quality sensor assembly, the micro switch is used for detecting the mounting state of the cover plate, and the micro switch is configured with a function for controlling the mounting state of the cover plate to be switched on and off the power supply assembly.

7. The air purifier of claim 1, wherein: the air purifier further comprises a controller, the controller is respectively electrically connected with the sterilization module and the air exhaust element, and the controller is used for controlling the sterilization module and the working state of the air exhaust element.

8. The air cleaner of any one of claims 1 to 7, wherein: air purifier still includes the intermediate lamella, the top of first casing install in the lower surface of intermediate lamella, the bottom of second casing install in the upper surface of intermediate lamella, the intermediate lamella has the confession purify the chamber with the first through-hole of air-out chamber intercommunication.

9. The air purifier of claim 8, wherein: the air purifier further comprises a base, the first shell comprises a first shell, a support rod, a filter screen radial limiting plate and a filter screen axial limiting plate, the filter screen radial limiting plate is installed on the base, a stop block used for limiting the filter screen to move radially is arranged on the filter screen radial limiting plate, the outer wall of the filter screen abuts against the stop block, and the bottom of the filter screen is installed on the filter screen axial limiting plate; the filter screen axial limiting plate is mounted on the filter screen radial limiting plate in a height-adjustable manner, so that the top of the filter screen abuts against the middle plate; the one end of bracing piece with the intermediate lamella is connected, the other end of bracing piece with the base is connected, the middle part of first shell with the bracing piece is connected, the one end of first shell with the second casing is connected, the other end of first shell with the radial limiting plate of filter screen is connected.

10. The air purifier of claim 8, wherein: the second shell comprises a second shell, a diversion shell and a top plate, the air outlet cavity is formed in the diversion shell, one end of the diversion shell is connected with the top plate, the top plate is provided with the air outlet, the other end of the diversion shell is connected with the middle plate, and the middle of the diversion shell is connected with the second shell.