CN218495271U - Air purifying device - Google Patents

Abstract

The application relates to the technical field of air purification, and discloses an air purification device which comprises a first shell, wherein an accommodating space, an air inlet and an air outlet which are communicated with the accommodating space are formed in the first shell; the first filtering unit is arranged in the accommodating space corresponding to the air inlet; the second filtering unit is arranged behind the first filtering unit along the air flowing direction; the photocatalytic unit is arranged between the first filtering unit and the second filtering unit; the fan is used for driving air to enter from the air inlet, and the air flows out from the air outlet after being purified by the first filtering unit, the photocatalytic unit and the second filtering unit in sequence; the photocatalysis unit comprises a second shell, a first shell and a second shell, wherein a catalysis cavity, an air inlet and an air outlet which are communicated with the catalysis cavity are formed in the second shell; the guide plate is arranged on the inner wall of the catalysis cavity so as to form a tortuous airflow channel inside the catalysis cavity; the photocatalysis module is arranged on the zigzag airflow channel.

Description

Air purifying device

Technical Field

The present application relates to the field of air purification technology, for example, to an air purification device.

Background

Along with the continuous improvement of living standard of people, and the poor problem of indoor air quality caused by external environmental pollution and factors such as interior decoration materials and furniture, air purification is more and more emphasized. And the air purifier is gradually becoming one of the common household appliances in life.

The related art discloses an air purifier, which comprises a shell, wherein an air purifying module and an exhaust fan module are arranged in the shell, the exhaust fan module is positioned at the upper part of the shell, and the air purifying module is positioned at the lower part of the shell; the air purification module comprises a preliminary filtering unit, a dual-wavelength ultraviolet superposition photocatalytic unit and an active carbon filtering unit, wherein the active carbon filtering unit is positioned below the exhaust fan module, the preliminary filtering unit and the dual-wavelength ultraviolet superposition photocatalytic unit are positioned below the active carbon filtering unit, the preliminary filtering unit takes the periphery of the shell as an air inlet, and air enters the preliminary filtering unit from the air inlet, is filtered by the dual-wavelength ultraviolet superposition photocatalytic unit, is filtered by the active carbon filtering unit and is extracted by the exhaust fan module; the dual-wavelength ultraviolet superposed photocatalysis unit comprises ultraviolet lamps with two wavelengths and a photocatalysis plate.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

the air draft module draws air to flow, and the air is filtered by the preliminary filtering unit, the dual-wavelength ultraviolet superposition photocatalytic unit and the active carbon filtering unit in sequence. However, the dual-wavelength uv-superimposed photocatalytic unit requires a certain catalytic time, and the contact time between the air and the dual-wavelength uv-superimposed photocatalytic unit is short, so that the purification effect of the catalytic unit cannot be fully exerted, and the overall purification effect is poor.

It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present application and therefore may include information that does not constitute prior art known to a person of ordinary skill in the art.

SUMMERY OF THE UTILITY MODEL

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides an air purification device to improve the purification effect of the air purification device.

In some embodiments, the air purification apparatus includes: the first shell is internally provided with an accommodating space, an air inlet and an air outlet which are communicated with the accommodating space; the first filtering unit is arranged in the accommodating space corresponding to the air inlet; the second filtering unit is arranged behind the first filtering unit along the air flowing direction; the photocatalytic unit is arranged between the first filtering unit and the second filtering unit; the fan is used for driving air to enter from the air inlet, and the air flows out from the air outlet after being purified by the first filtering unit, the photocatalytic unit and the second filtering unit in sequence; wherein the photocatalytic unit includes: the second shell is internally provided with a catalysis cavity, and an air inlet and an air outlet which are communicated with the catalysis cavity; the guide plate is arranged on the inner wall of the catalysis cavity so as to form a zigzag airflow channel inside the catalysis cavity; and the photocatalytic module is arranged in the zigzag airflow channel.

In some embodiments, the number of the flow guide plates is multiple, and the multiple flow guide plates are arranged on the inner wall of the catalytic cavity in a staggered manner along the air flow direction, so that the tortuous airflow channel is formed inside the catalytic cavity.

In some embodiments, the second housing includes a bottom plate, a top plate, a first side plate and a second side plate, the first side plate and the second side plate being disposed opposite to each other, the plurality of baffles includes: the first guide plate is arranged on the inner side wall of the first side plate close to the bottom plate, and a first air duct section is defined by the first guide plate and the bottom plate; the second guide plate is arranged on the inner side wall of the second side plate close to the top plate, a second air channel section is defined by the second guide plate and the first guide plate, and a third air channel section is defined by the second guide plate and the top plate; the air inlet corresponds to the first air channel section and is arranged on the first side plate, the air outlet corresponds to the third air channel section and is arranged on the second side plate, and air entering from the air inlet flows through the first air channel section, the second air channel section and the third air channel section in sequence and then flows out from the air outlet.

In some embodiments, the plurality of baffles further comprises: and the third guide plates are arranged between the first guide plates and the second guide plates in a staggered manner.

In some embodiments, the photocatalytic module comprises: the ultraviolet lamp panel is arranged on the first side plate corresponding to one end below the air inlet, and the other end of the ultraviolet lamp panel is arranged on the second side plate; and the catalytic plate corresponds to one end above the air inlet and is arranged on the first side plate, and the other end of the catalytic plate is arranged on the second side plate.

In some embodiments, the ultraviolet lamp panel comprises: the fixing frame is arranged on the first side plate corresponding to one end below the air inlet, and the other end of the fixing frame is arranged on the second side plate; the ultraviolet lamp beads are distributed on the first side face and the second side face of the fixing frame, and the ultraviolet lamp beads on the first side face and the ultraviolet lamp beads on the second side face are arranged in a staggered mode.

In some embodiments, the catalyst plate comprises a substrate and a photocatalyst coated on the surface of the substrate, and the substrate is provided with a plurality of vent holes.

In some embodiments, the number of the photocatalytic modules is plural, and a plurality of the photocatalytic modules are distributed in the first air duct section, the second air duct section, and the third air duct section.

In some embodiments, the first housing is provided with an access opening corresponding to the accommodating space.

In some embodiments, the air purification apparatus further comprises: and the two ventilation grids are respectively arranged at the air inlet and the air outlet.

The air purification device provided by the embodiment of the disclosure can realize the following technical effects:

1. the air purification device that this disclosed embodiment provided, through set gradually first filter unit, photocatalysis unit and second filter unit along the air flow direction, make the air flow through first filter unit, photocatalysis unit and second filter unit in proper order and filter under the drive of fan. The purification effect is improved, and simultaneously, the generation of ozone can be effectively avoided.

2. A guide plate is arranged in a catalytic cavity of the photocatalytic unit, so that a tortuous airflow channel is formed in the catalytic cavity. Therefore, the stroke of the air in the catalytic cavity can be effectively prolonged, the reaction time of the air and the photocatalytic module in the catalytic cavity is further prolonged, and the effective utilization rate of the photocatalytic module is fully exerted. The filtering effect of the photocatalytic module is effectively improved by arranging the guide plate, so that the purifying effect of the air purifying device is improved.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:

fig. 1 is a schematic structural diagram of an air purification apparatus provided in an embodiment of the present disclosure;

FIG. 2 is a schematic cross-sectional view of an air purification apparatus provided in an embodiment of the present disclosure;

FIG. 3 is a schematic cross-sectional view of another air purification apparatus provided in an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of a catalyst plate of an air purification device according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of an ultraviolet lamp panel of an air purification device provided in the embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of an ultraviolet lamp panel of another air purification device provided in the embodiment of the present disclosure.

Reference numerals:

100: a first housing; 101: an air inlet; 102: an air outlet; 103: an access hole; 110: a hand-held portion; 120: a ventilation grille;

210: a first side plate; 211: an air inlet; 220: a second side plate; 221: an air outlet; 230: a base plate; 240: a top plate; 250: a first baffle; 260: a second baffle; 270: a third baffle; 280: an ultraviolet lamp panel; 281: a fixed mount; 282: ultraviolet lamp beads; 290: a catalyst plate; 291: a substrate; 292: a vent hole;

300: a first filter unit;

400: a second filter unit;

500: a fan.

Detailed Description

So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the disclosed embodiments and their examples and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation. Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art as appropriate.

In addition, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. Specific meanings of the above terms in the disclosed embodiments can be understood by those of ordinary skill in the art according to specific situations.

The term "plurality" means two or more unless otherwise specified.

In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

With reference to fig. 1 to 6, an embodiment of the present disclosure provides an air purification apparatus, including a first housing 100, a first filter unit 300, a second filter unit 400, a photocatalytic unit, and a fan 500, where an accommodating space, and an air inlet 101 and an air outlet 102 communicated with the accommodating space are configured inside the first housing 100; the first filtering unit 300 is arranged in the accommodating space corresponding to the air inlet 101; the second filter unit 400 is disposed at the rear of the first filter unit 300 in the air flow direction; the photocatalytic unit is disposed between the first filter unit 300 and the second filter unit 400; the fan 500 is used for driving air to enter from the air inlet 101, and the air flows out from the air outlet 102 after being purified by the first filtering unit 300, the photocatalytic unit and the second filtering unit 400 in sequence; the photocatalytic unit comprises a second shell, a guide plate and a photocatalytic module, wherein a catalytic cavity, and an air inlet 211 and an air outlet 221 which are communicated with the catalytic cavity are formed in the second shell; the guide plate is arranged on the inner wall of the catalysis cavity so as to form a zigzag airflow channel inside the catalysis cavity; the photocatalysis module is arranged in the zigzag airflow channel.

According to the air purification device provided by the embodiment of the present disclosure, the first filter unit 300, the photocatalytic unit and the second filter unit 400 are sequentially arranged along the air flowing direction, so that air is sequentially filtered by flowing through the first filter unit 300, the photocatalytic unit and the second filter unit 400 under the driving of the fan 500. The purification effect is improved, and simultaneously, the generation of ozone can be effectively avoided.

A guide plate is arranged in a catalytic cavity of the photocatalytic unit, so that a tortuous airflow channel is formed in the catalytic cavity. The stroke of the air in the catalytic cavity can be effectively prolonged, so that the reaction time of the air and the photocatalytic module in the catalytic cavity is prolonged, and the effective utilization rate of the photocatalytic module is fully exerted. The filtering effect of the photocatalytic module is effectively improved by arranging the guide plate, so that the purifying effect of the air purifying device is improved.

In the embodiment of the present disclosure, the zigzag air flow passage is provided in such a manner that the travel of the air flow in the catalytic cavity is greater than the linear distance between the air inlet 211 and the air outlet 221. For example, the inlet 211 and the outlet are disposed on the same side, and the baffle extends from the same side to the opposite side and is located between the inlet 211 and the outlet 221. Thus, the shortest stroke of the gas flow in the catalytic cavity also exceeds the linear distance between the gas inlet 211 and the gas outlet 221, and the longer the gas flow in the catalytic cavity is, the more thoroughly the gas is decomposed by the photocatalytic module, thereby improving the purification effect of the photocatalytic module.

Optionally, the number of the guide plates is multiple, and the guide plates are arranged on the inner wall of the catalytic cavity in a staggered manner along the air flowing direction, so that the catalytic cavity forms a zigzag air flow channel.

Through setting up a plurality of guide plates, make the guide plate set up in the inner wall of catalysis cavity along the air flow direction is crisscross. By adopting the arrangement form, the catalysis cavity forms a zigzag airflow channel, so that the stroke of air in the catalysis cavity can be further prolonged, the photocatalytic module and harmful gas in the air can be decomposed more thoroughly, and the purification effect of the air purification device is effectively improved.

Optionally, the second housing includes a bottom plate 230, a top plate 240, a first side plate 210 and a second side plate 220, the first side plate 210 and the second side plate 220 are disposed opposite to each other, the plurality of baffles includes a first baffle 250 and a second baffle 260, the first baffle 250 is disposed on an inner side wall of the first side plate 210 near the bottom plate 230, and the first baffle 250 and the bottom plate 230 define a first air duct section; the second baffle 260 is disposed on the inner sidewall of the second side plate 220 near the top plate 240, the second baffle 260 and the first baffle 250 define a second air duct section, and the second baffle 260 and the top plate 240 define a third air duct section; the air inlet 211 is disposed on the first side plate 210 corresponding to the first air duct section, the air outlet 221 is disposed on the second side plate 220 corresponding to the third air duct section, and air entering from the air inlet 211 flows through the first air duct section, the second air duct section, and the third air duct section in sequence and then flows out from the air outlet 221.

The second housing includes a bottom plate 230 and a back plate in a use state, and a first side plate 210 and a second side plate 220 disposed opposite to each other. The first side plate 210 is a side plate of the second housing facing the air inlet 101, and the second side plate 220 is a side plate of the second housing facing the air outlet 102. The bottom plate 230, the top plate 240, the first side plate 210 and the second side plate 220 together enclose a closed catalytic cavity.

The first baffle 250 is disposed on an inner sidewall of the first side plate 210 near the bottom plate 230. Specifically, a first end of the first baffle 250 is disposed on the inner sidewall of the first side plate 210, and a second end of the first baffle is disposed at a first distance from the second side plate 220. In this manner, the first baffle 250 and the bottom plate 230 define a first air duct section.

The second guide plate 260 is disposed on an inner sidewall of the second side plate 220 adjacent to the top plate 240. Specifically, a first end of the second guide plate 260 is disposed on the inner sidewall of the second side plate 220, and a second end of the second guide plate is disposed at a second distance from the first side plate 210. Thus, the second baffle 260 defines a second air duct section with the first baffle 250 and a third air duct section with the roof 240.

Further, the air inlet 211 is disposed on the first side plate 210 corresponding to the first air duct section, that is, the air inlet 211 is disposed on the first side plate 210 and located between the bottom plate 230 and the first baffle 250. The air outlet 221 is opened at the second side plate 220 corresponding to the third air duct section, that is, the air outlet 221 is opened at the second side plate 220 and is located between the second flow guiding plate 260 and the top plate 240.

With this arrangement, the catalytic cavity is formed into a meandering gas flow path that turns back many times in the horizontal direction by the first and second flow-guiding plates 250 and 260. The air enters from the air inlet 211, sequentially flows through the first air duct section, the second air duct section and the third air duct section, and then flows out from the air outlet 221. Effectively prolongs the stroke of the air in the catalytic cavity, and prolongs the flowing time of the gas in the catalytic cavity. And then prolonged the reaction of air and the photocatalysis module in the catalysis cavity is long, make the photocatalysis module with the more thorough of harmful gas decomposition in the air, and then improved air purification device's purifying effect effectively.

Optionally, the vertical distance of the first baffle 250 to the first side plate 210 is greater than the first distance.

When the first baffle 250 is disposed perpendicular to the first side plate 210, a perpendicular distance between the first baffle 250 and the first side plate 210 is a length of the first baffle 250, that is, a height of the first baffle 250 perpendicular to the first side plate 210.

When the first baffle 250 is disposed obliquely, the vertical distance from the first baffle 250 to the first side plate 210 is the vertical distance from the second end of the first baffle 250 to the first side plate 210.

The first baffle 250 is a greater vertical distance from the first side panel 210 than the first distance, and correspondingly, the second baffle 260 is a greater vertical distance from the second side panel 220 than the second distance. By adopting the arrangement form, the airflow is ensured to be bent for many times in the catalytic cavity, and further, the harmful gas in the air is thoroughly decomposed by the photocatalytic module.

Optionally, the plurality of baffles further comprises a plurality of third baffles 270, the plurality of third baffles 270 being interleaved between the first and second baffles 250 and 260.

By staggering a plurality of third flow guide plates 270 between the first flow guide plate 250 and the second flow guide plate 260, the gas can be turned over more times by adopting the arrangement mode, and the flowing time of the gas in the catalytic cavity is further prolonged. Thereby can improve air purification device's purifying effect effectively, promote user's use and experience.

Optionally, the photocatalytic module includes an ultraviolet lamp panel 280 and a catalytic panel 290, one end of the ultraviolet lamp panel 280, which corresponds to the lower portion of the air inlet 211, is disposed on the first side plate 210, and the other end is disposed on the second side plate 220; the catalytic plate 290 is disposed on the first side plate 210 at an upper end corresponding to the air inlet 211, and disposed on the second side plate 220 at the other end.

The ultraviolet lamp panel 280 is disposed below the air inlet 211, and one end of the ultraviolet lamp panel is disposed at the other end of the first side plate 210 and the other end of the ultraviolet lamp panel is disposed at the second side plate 220. Here, below the air inlet 211 means a side of the air inlet 211 facing the bottom plate 230. The catalytic plate 290 is disposed above the air inlet 211, and has one end disposed on the first side plate 210 and the other end disposed on the second side plate 220. Here, above the inlet 211 means a side of the inlet 211 facing the first guide plate 250.

By adopting the arrangement mode, air flowing through the first air duct section can be decomposed by the photocatalytic module. That is, the catalytic plate 290 decomposes organic pollutants in the air into inorganic small molecules such as carbon dioxide and water under the irradiation of ultraviolet light. Such as formaldehyde, benzene and benzene series emitted from interior decoration, and volatile organic compounds emitted from decorative materials. These organic pollutants seriously affect the physical health of the user. Therefore, the air purification device that this disclosure embodiment provided is through adopting the harmful gas in the photocatalysis's mode decomposition air, and purification efficiency is high to can not produce ozone at the in-process of decomposition, thereby can promote user's use effectively and experience.

Optionally, the ultraviolet lamp panel 280 includes a fixing frame 281 and a plurality of ultraviolet lamp beads 282, one end of the fixing frame 281, which corresponds to the lower portion of the air inlet 211, is disposed on the first side plate 210, and the other end is disposed on the second side plate 220; the plurality of ultraviolet lamp beads 282 are distributed on the first side and the second side of the fixing frame 281.

By setting the ultraviolet lamp panel 280 into two parts, namely a fixing frame 281 and a plurality of ultraviolet lamp beads 282, two ends of the fixing frame 281 are respectively fixed on the first side plate 210 and the second side plate 220, and the plurality of ultraviolet lamp beads 282 are fixed on the fixing frame 281. By adopting the arrangement form, the ultraviolet lamp bead 282 is convenient to fix, and meanwhile, the structure is simple and the processing is convenient.

Optionally, the ultraviolet lamp beads 282 of the first side face and the ultraviolet lamp beads 282 of the second side face are arranged in a staggered manner.

By adopting the arrangement form, the illumination range and the illumination intensity of the ultraviolet light can be effectively improved, and further the decomposition efficiency of the catalytic plate 290 can be effectively improved, so that the purification effect of the air purification device is improved.

Optionally, the catalytic plate 290 includes a substrate 291 and a photocatalyst coated on the surface of the substrate 291, and the substrate 291 has a plurality of vent holes 292.

The base plate 291 is provided with a plurality of vent holes 292, and specifically, the plurality of vent holes 292 form a honeycomb-shaped housing cavity in the base plate 291. The photocatalyst is coated on the surface of the substrate 291. With this arrangement, when air passes through the base plate 291 and passes through the plurality of air holes 292, the air velocity can be reduced, and the air can be sufficiently contacted with the photocatalyst, thereby effectively improving the decomposition effect.

Optionally, the first filtering unit 300 is a High efficiency particulate Filter (HEPA), and the second filtering unit 400 is an activated carbon Filter.

Therefore, the air entering from the air inlet 101 passes through the HEPA filter screen to filter out large-particle dust, PM2.5 and other micro particles in the air. Effectively preventing the particles in the air from blocking the catalytic plate 290, thereby reducing the purifying effect of the photocatalytic module.

The air filtered by the HEPA filter flows into the catalytic cavity from the air inlet 211, and the catalyst on the substrate 291 generates a plurality of active groups under the irradiation of ultraviolet light, and the active groups can oxidize and decompose organic pollutants contained in the air when contacting with the air.

Because the ultraviolet ray can decompose oxygen molecules in the air into oxygen atoms, the oxygen atoms are combined with the oxygen molecules to generate ozone. And ozone is harmful to human bodies. Therefore, the air purified by the photocatalytic module is adsorbed and filtered again through the activated carbon filter screen to adsorb ozone generated by ultraviolet rays. Meanwhile, the catalytic plate 290 can oxidize and decompose organic substances generated by the activated carbon.

By adopting the arrangement form, the air purification effect of the air purification device on the air can be effectively improved, and the ozone is not generated during the purification. Meanwhile, the replacement period of the activated carbon filter screen can be effectively prolonged, and even the activated carbon filter screen does not need to be replaced.

Optionally, the number of the photocatalytic modules is multiple, and the multiple photocatalytic modules are distributed in the first air duct section, the second air duct section and the third air duct section.

Through setting up a plurality of photocatalysis modules, a plurality of photocatalysis modules distribute in first wind channel section, second wind channel section and third wind channel section. By adopting the arrangement form, the decomposition effect can be further improved, and the purification effect of the air purification device can be further improved.

Illustratively, the plurality of photocatalytic modules includes a first photocatalytic module, a second photocatalytic module, and a third photocatalytic module, the first photocatalytic module is fixed to the first side plate 210 at one end and fixed to the second side plate 220 at the other end in the first air duct section; one end of the second photocatalytic module in the second air duct section is fixed on the first guide plate 250, and the other end is fixed on the second guide plate 260; one end of the third photocatalytic module in the third air duct section is fixed to the first side plate 210, and the other end is fixed to the second side plate 220.

The plurality of photocatalytic modules may also be disposed in other manners, for example, one end of the first side plate 210 is fixed to the first flow guide plate 250, and the other end of the first side plate is fixed to the top plate 240.

Optionally, the first casing 100 is provided with an access opening 103 corresponding to the accommodating space.

Through setting up access hole 103, the user of being convenient for overhauls inside. Need not whole dismantlement air purification device, and then the convenience when having improved the maintenance effectively.

Optionally, the air purification apparatus further includes two ventilation grills 120 respectively disposed at the air inlet 101 and the air outlet 102.

The air inlet 101 and the air outlet 102 are respectively provided with the ventilation grilles 120, so that large-volume sundries, such as paper scraps, clothes and the like, can be effectively filtered, and the air purification device can be effectively prevented from being blocked, thereby affecting the normal operation of the air purification device. Meanwhile, the safety can be effectively improved by arranging the ventilation grille 120, and the phenomenon that children or even adults mistakenly stretch hands into the air purification device to cause damage to human bodies in different degrees and damage to parts in the device is avoided.

Optionally, the air purification apparatus further comprises a handle 110 configured on an outer sidewall of the first housing 100.

By constructing the grip portion 110 at the outer sidewall of the first housing 100, the user's handling is facilitated.

The above description and the drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. An air purification apparatus, comprising:

the first shell is internally provided with an accommodating space, an air inlet and an air outlet which are communicated with the accommodating space;

the first filtering unit is arranged in the accommodating space corresponding to the air inlet;

the second filtering unit is arranged behind the first filtering unit along the air flowing direction;

the photocatalytic unit is arranged between the first filtering unit and the second filtering unit;

the fan is used for driving air to enter from the air inlet, and the air flows out from the air outlet after being purified by the first filtering unit, the photocatalytic unit and the second filtering unit in sequence;

wherein the photocatalytic unit includes:

the second shell is internally provided with a catalysis cavity, and an air inlet and an air outlet which are communicated with the catalysis cavity;

the guide plate is arranged on the inner wall of the catalysis cavity so as to form a zigzag airflow channel inside the catalysis cavity;

and the photocatalytic module is arranged in the zigzag airflow channel.

2. The air cleaning apparatus according to claim 1,

the quantity of guide plates is a plurality of, and is a plurality of the guide plate along the crisscross setting in of air flow direction the inner wall of catalysis cavity, so that inside the catalysis cavity forms tortuous air flow channel.

3. The air cleaning apparatus according to claim 2,

the second casing includes bottom plate, roof, first curb plate and second curb plate, first curb plate with the second curb plate sets up relatively, and is a plurality of the guide plate includes:

the first guide plate is arranged on the inner side wall of the first side plate close to the bottom plate, and a first air duct section is defined by the first guide plate and the bottom plate;

the second guide plate is arranged on the inner side wall of the second side plate close to the top plate, a second air channel section is defined by the second guide plate and the first guide plate, and a third air channel section is defined by the second guide plate and the top plate;

the air inlet corresponds to the first air channel section and is arranged on the first side plate, the air outlet corresponds to the third air channel section and is arranged on the second side plate, and air entering from the air inlet flows through the first air channel section, the second air channel section and the third air channel section in sequence and then flows out from the air outlet.

4. The air purification apparatus of claim 3, wherein the plurality of baffles further comprises:

and the third guide plates are arranged between the first guide plates and the second guide plates in a staggered manner.

5. The air purification apparatus of claim 3, wherein the photocatalytic module comprises:

the ultraviolet lamp panel is arranged on the first side plate corresponding to one end below the air inlet, and the other end of the ultraviolet lamp panel is arranged on the second side plate;

and the catalytic plate corresponds to one end above the air inlet and is arranged on the first side plate, and the other end of the catalytic plate is arranged on the second side plate.

6. The air purification device of claim 5, wherein the ultraviolet lamp panel comprises:

the fixing frame is arranged on the first side plate corresponding to one end below the air inlet, and the other end of the fixing frame is arranged on the second side plate;

and the ultraviolet lamp beads are distributed on the first side surface and the second side surface of the fixing frame.

7. The air cleaning apparatus according to claim 5,

the catalytic plate comprises a substrate and a photocatalyst coated on the surface of the substrate, and the substrate is provided with a plurality of air holes.

8. The air cleaning apparatus according to claim 3,

the number of the photocatalytic modules is multiple, and the photocatalytic modules are distributed in the first air duct section, the second air duct section and the third air duct section.

9. The air cleaning device according to any one of claims 1 to 8,

the first shell is provided with an access hole corresponding to the accommodating space.

10. The air cleaning device according to any one of claims 1 to 8, further comprising:

and the two ventilation grids are respectively arranged at the air inlet and the air outlet.

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