CN215336904U

CN215336904U - Air purifying device

Info

Publication number: CN215336904U
Application number: CN202120659368.4U
Authority: CN
Inventors: 杨少强; 张同鑫; 武凤玲; 龚东巧; 董玮利; 王秀萍
Original assignee: Qingdao Haier Smart Technology R&D Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Smart Technology R&D Co Ltd; Haier Smart Home Co Ltd
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2021-12-28
Anticipated expiration: 2031-03-31

Abstract

The present invention provides an air purification apparatus, comprising: the liquid injection cavity is positioned at the bottom and the ventilation air channel is formed above the liquid injection cavity, and the liquid injection cavity is used for storing filter liquid; a fan configured to cause a flow of purified air to be formed through the ventilation duct and out of the housing; the bottom of the rolling filter screen curtain is immersed in the filter liquid, a part of the screen surface of the rolling filter screen curtain is arranged in the ventilation air duct, and the rolling filter screen curtain is configured to enable the screen surface to rotate and roll, so that the screen surface soaked with the filter liquid moves to the ventilation air duct to filter the flowing purified air flow. According to the scheme of the utility model, the filtering water film is used for filtering the purified air flow flowing through the ventilation air duct, and particulate matters and water-soluble gaseous pollutants are intercepted or absorbed. The rolling filter screen curtain and the shell are compact and simple in structure, convenient to realize and capable of effectively and reliably realizing air purification.

Description

Air purifying device

Technical Field

The utility model relates to indoor air purification, in particular to an air purification device.

Background

There are hundreds of pollutants in indoor air, and almost every kind of pollutants is harmful to human health in its specific action mode and way. In particular, a plurality of harmful substances exist in an indoor environment at the same time, and influence on a human body is more harmful in addition to or in synergy with each other.

The particles with the particle size of less than or equal to 2.5 mu m have large relative surface area and are easy to adsorb some toxic and harmful substances. And the particle size of the particles is small, and the particles can enter the respiratory tract of a human body and further reach the lung through the respiration of the human body, so that the respiratory system diseases are caused. Even some substances can directly enter the cardiovascular system, and cause greater harm to the health of human bodies.

At present, the purification technology of particulate pollutants in indoor air mainly comprises three technologies of filtration technology, electrostatic technology and wet dust removal. The filtering technology has high efficiency, but the filter screen needs to be replaced regularly; the electrostatic technology has low efficiency on micro-fine particles, needs to regularly clean ash or disassemble and clean, generates ozone when in use, and has high cost; the wet dust removal technology can purify water-soluble gaseous pollutants while effectively purifying particle pollutants, and realize air humidification, but the required components are more and the structure is complicated.

Most of the air purifiers in the air purifier and the air conditioner at present adopt a HEPA filter screen and an active carbon adsorption module. HEPA filter screen and active carbon adsorption module effective service life are shorter, and the resistance is big, need the user to change regularly, and the cost is higher. Because the existing wet dust removal needs to combine the filter liquor with pollutants, the structure is relatively complex, and the use is relatively less in the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to provide an air cleaning device having a simple structure.

A further object of the present invention is to improve the purifying effect of the air purifying device.

It is another further object of the present invention to avoid secondary pollution of the air cleaning device.

It is another further object of the present invention to enable the operating state of the air cleaning device to be automatically adjusted in response to a contamination situation.

In particular, the present invention provides an air purification apparatus comprising:

the liquid injection cavity is positioned at the bottom and the ventilation air channel is formed above the liquid injection cavity, and the liquid injection cavity is used for storing filter liquid;

a fan configured to cause a flow of purified air to be formed through the ventilation duct and out of the housing;

the bottom of the rolling filter screen curtain is immersed in the filter liquid, a part of the screen surface of the rolling filter screen curtain is arranged in the ventilation air duct, and the rolling filter screen curtain is configured to enable the screen surface to rotate and roll, so that the screen surface soaked with the filter liquid moves to the ventilation air duct to filter the flowing purified air flow.

Optionally, the rolling screen comprises:

the driving roller is positioned at the upper part of the ventilation air duct;

the driven roller is arranged in parallel with the driving roller and is positioned in the liquid injection cavity;

and the annular filter screen is tensioned on the driving roller and the driven roller and rolls along with the rotation of the driving roller.

Optionally, the annular filter screen is made of silica gel, and the aperture of the filter hole is set to be 0.5-3 mm.

Optionally, the air purification apparatus further comprises:

the cleaning brush is arranged in parallel to the driven roller, and the brush head of the cleaning brush is abutted against the part, located on the outer side of the driven roller, of the annular filter screen so as to brush the annular filter screen.

Optionally, the housing is square, an air inlet and an air outlet are formed in opposite side walls of the housing, the ventilation air duct is connected between the air inlet and the air outlet, and the fan is arranged at the air outlet.

Optionally, the fan is a centrifugal fan, a fan air inlet and an air outlet of the centrifugal fan are arranged opposite to each other, and a fan air outlet of the centrifugal fan is arranged upward.

Optionally, the air purification apparatus further comprises a filtrate circulation assembly, and the filtrate circulation assembly comprises:

the liquid inlet end of the circulating pipe is connected to one side of the liquid injection cavity close to the air outlet, and the liquid discharge end of the circulating pipe is connected to one side of the liquid injection cavity close to the air inlet;

the circulating pump is configured to pump the filtrate from the liquid injection cavity through the liquid inlet end and supply the filtrate back to the liquid injection cavity through the liquid discharge end;

and the filter is connected with the circulating pipe and is configured to filter the filtrate in the circulating pipe.

Optionally, the circulation pump is configured to start with the rolling of the rolling screen and the flow rate of the circulation pump increases correspondingly with an increase in the rolling speed of the rolling screen.

Optionally, the air purification apparatus further comprises:

a particulate matter sensor configured to detect a concentration of particulate contaminants in an operating environment of the air purification device;

an air humidity sensor configured to detect an air humidity of an environment in which the air purification apparatus operates; and is

The fan is configured to start when the concentration of the particulate pollutants is greater than a set concentration threshold value, and the wind speed of the purified air flow is correspondingly reduced along with the increase of the humidity of the air;

the fan is further configured to activate when the particulate contaminant concentration is less than or equal to a set concentration threshold and the air humidity is less than a set humidity threshold, and such that the wind speed of the purge air stream decreases accordingly as the air humidity increases.

Optionally, the rolling filter screen is further configured such that its rolling speed increases or decreases with an increase or decrease in the wind speed of the purge gas stream.

The air purification device of the utility model is internally provided with a rolling filter screen curtain. The bottom of the rolling filter screen is immersed in the filter liquid, and a part of the screen surface is arranged in the ventilation air duct. The curtain surface of the rolling filter screen curtain rotates and rolls, and the curtain surface at the bottom of the rolling filter screen curtain is soaked with filter liquid and then moves to the ventilation air duct, so that the water filtering membrane is formed. The purified air flow passing through the ventilation air duct is filtered by the filtering water film, and the particulate matters and the water-soluble gaseous pollutants are intercepted or absorbed. The rolling filter screen curtain and the shell are compact and simple in structure, convenient to realize and capable of effectively and reliably realizing air purification.

Furthermore, the air purification device provided by the utility model utilizes the cleaning brush to brush the annular filter screen, so that pollutants attached to the annular filter screen can be cleaned in time, and secondary pollution is avoided.

Furthermore, the air purification device also comprises a filtrate circulating component, so that filtrate is extracted from one side of the air outlet and filtered, and then the filtrate is discharged back into the liquid injection cavity from one side of the air inlet. The filtering liquid circulates between the liquid injection cavity and the circulating pipe, and automatic cleaning is realized. The filtrate also forms a liquid flow flowing from one side of the air inlet to one side of the air outlet in the liquid injection cavity, so that the annular filter screen is ensured to be soaked with the clean filtrate all the time, and the purification effect is improved.

Furthermore, the air purification device of the utility model improves the control method in a targeted manner, so that the rolling speed of the rolling filter screen curtain, the wind speed of the purified air flow and the flow speed of the circulating pump are adapted to the environment humidity and the environment pollution condition, and the comfort level of users is comprehensively improved.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the utility model will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

FIG. 1 is a schematic view of an air purification apparatus according to one embodiment of the present invention;

FIG. 2 is a schematic view of another angle of the air purification apparatus shown in FIG. 1;

FIG. 3 is a schematic view of the interior of the housing of the air purification apparatus shown in FIG. 1;

FIG. 4 is a cross-sectional view of the air purification apparatus shown in FIG. 1;

FIG. 5 is a schematic view of a filtrate circulation module in an air purification apparatus according to an embodiment of the present invention;

fig. 6 is a schematic block diagram of a control part in the air cleaning apparatus according to one embodiment of the present invention; and

fig. 7 is a schematic diagram of a control method of an air cleaning device according to an embodiment of the present invention.

Detailed Description

Fig. 1 is a schematic view of an air purification apparatus 10 according to an embodiment of the present invention. Fig. 2 is a schematic view of the air cleaning device 10 shown in fig. 1 from another angle, fig. 3 is a schematic view of the inside of the housing 110 of the air cleaning device 10 shown in fig. 1, and fig. 4 is a sectional view of the air cleaning device 10 shown in fig. 1.

The air cleaning device 10 of the present embodiment may generally include: housing 110, fan 120, rolling screen 130. The interior of the housing 110 defines a pour chamber 162 at the bottom and a vent channel 161 formed above the pour chamber 162. The liquid injection chamber 162 is used for storing a filtrate, and the filtrate may be purified water in a general case. Alternatively, the filtrate may also be a sterilizing solution, a photocatalyst solution, a plant extract, a formaldehyde absorbing solution, etc. with special formulation components. Since the formulation of such solutions is known per se to the person skilled in the art, further description is not provided here.

The volume of the infusion chamber 162 is such that the filtrate is sufficient to contact the rolling screen 130 and can be circulated through the circulation line 151. In some embodiments, the liquid level in the filling chamber 162 can be sensed or observed through a window formed in the housing 110, so that when the liquid level of the filtrate is seriously lowered, the liquid can be timely replenished or a liquid replenishing prompt can be issued.

A fan 120 configured to cause a flow of purge air to be formed through the ventilation air duct 161 and out of the housing 110. In this embodiment, the fan 120 may be a centrifugal fan. The centrifugal fan is used for realizing high-efficiency filtration and remote air supply, and is beneficial to the circulation of indoor ambient air.

The bottom of the rolling filter screen 130 is immersed in the filtering liquid, and a part of the screen is disposed in the ventilation duct 161, and the rolling filter screen 130 is configured to make the screen rotate and roll, so that the screen after being soaked with the filtering liquid moves to the ventilation duct 161 to filter the purified air flowing through. The curtain surface soaked with the filter liquid forms a filter liquid film, and when the air flow passes through the filter liquid film, the filter liquid film intercepts and absorbs pollutants. Compared with the method that pollutants are blocked only by the aid of the aperture of the filter screen, the filter liquid membrane is high in absorption efficiency of water-soluble pollutants, and small in resistance influence on air flow. And different filter liquid formulas can meet the treatment of different polluted environments in a targeted manner.

The rolling filter screen 130 may include: a driving roller 131, a driven roller 132, an annular filter screen 133 and a motor 134. The drive roller 131 is located above the ventilation air duct 161 and can be rotated by a motor 134 or other driving means. The driven roller 132 is disposed parallel to the drive roller 131 and is located within the injection chamber 162. The ring screen 133 is tensioned on the drive roller 131 and the driven roller 132, and rolls with the rotation of the drive roller 131. When the driving roller 131 rotates, the annular filter 133 is rotated by friction, and the annular filter 133 further rotates the driven roller 132. The rolling direction of the rolling screen 130 may be such that the side turned out of the filtrate is downstream of the air stream and then turned to move downward by the drive roll 131, with the downwardly moving screen side upstream of the air stream. That is to say, the air current passes through the curtain that the filter liquid membrane has disappeared at first, after its prefiltering, and the curtain that has the filter liquid membrane behind rethread infiltration filtrate has, and such rotation mode has avoided the air by secondary pollution, has improved purifying effect.

The motor 134 serves as a power device for the drive roller 131, which rotates the drive roller 131. The rotational speed of the motor 134 directly affects the rolling speed of the rolling filter screen 130.

The ring-shaped filter 133 may be made of silica gel, and the aperture of the filter hole is set to 0.5-3 mm. The silica gel material has certain elasticity, is not easy to deform, is favorable for long-term use, and avoids looseness. The aperture of the filter holes can be tested effectively to form an effective filter liquid film.

The air cleaning device 10 may further be provided with a cleaning brush 140. The cleaning brush 140 is disposed parallel to the driven roller 132, and its brush head collides with a portion of the ring filter 133 located outside the driven roller 132 to brush the ring filter 133. During the rotation of the ring screen 133, it is automatically cleaned to remove the attached contaminants.

In order to cooperate with the rolling filter screen 130, the housing 110 may be configured to have a ventilation duct 161 in a horizontal direction, for example, the housing 110 may be square, and the opposite side walls thereof are provided with an air inlet 111 and an air outlet 112, and the ventilation duct 161 is connected between the air inlet 111 and the air outlet 112. The air purification apparatus 10 can suck the ambient air from the air inlet 111, and after being processed by the ventilation duct 161, the ambient air is exhausted from the air outlet 112 back to the indoor environment.

The fan 120 can be disposed at the air outlet 112, and the air flow at the fan 120 is purified, so that the secondary pollution of the purified air flow caused by the pollutant accumulated by the fan 120 can be effectively avoided.

The fan 120 may be a centrifugal fan, and the fan inlet of the centrifugal fan 120 is disposed opposite to the air outlet 112. In addition to the advantages of high air pressure, high purification efficiency and long delivery head, the centrifugal fan 120 can also convert the air flow direction, and convert the horizontal air flow direction along the ventilation air duct 161 into other directions required for purification. For example, when the air purification device 10 is placed on the ground or at a lower position, the air outlet of the centrifugal fan 120 is arranged upward, so that the air supply direction is perpendicular to the air inlet direction, the purified air is prevented from being rapidly sucked into the ventilation air duct 161 again, the air circulation in the indoor environment is facilitated, and the overall purification efficiency is improved.

The air cleaning device 10 of the present embodiment may further include a filtrate circulation assembly 150. Fig. 5 is a schematic view of a filtrate circulation assembly 150 in the air purification apparatus 10 according to an embodiment of the present invention. The filtrate circulation assembly 150 is used for filtering and cleaning the cleaning solution, and may include: circulation pipe 151, circulation pump 152, filter 153.

The liquid inlet end of the circulation tube 151 is connected to the liquid injection chamber 162 on the side near the air outlet 112, and the liquid outlet end thereof is connected to the liquid injection chamber 162 on the side near the air inlet 111. The circulation duct 151 forms a circulation passage for the filtered liquid outside the infusion chamber 162. The circulation duct 151 may be disposed outside the case 110 or inside the case 110. When the circulation tube 151 is disposed inside the case body 110, the storage chamber 162 and the circulation tube 151 can be isolated from each other inside the case body 110.

The circulation pump 152 is configured to supply the filtrate back to the injection chamber 162 through the drain after drawing the filtrate from the injection chamber 162 through the inlet, i.e., the circulation pipe 151 allows the filtrate to enter from the inlet of the circulation pipe 151 and to drain back to the injection chamber 162 through the drain of the circulation pipe 151.

The filter 153 is connected to the circulation pipe 151 and configured to filter the filtrate in the circulation pipe 151. The filter 153 may be a filter net or other filter element disposed in the circulation duct 151, or may be a separate filter connected in series to the circulation duct 151. The filter 153 may be provided with a corresponding filter element, such as a PP filter element, an activated carbon filter element, a reverse osmosis filter element, an ultrafiltration membrane filter element, a ceramic filter element, or an ion exchange resin filter element, according to the kind of the filtrate. In some optional embodiments, a component for activating and sterilizing the filtrate may be further disposed in the filter 153, so as to further improve the performance of the filtrate while ensuring the cleanness of the filtrate.

The circulation pump 152 may be configured to be activated as the rolling screen 130 rolls, that is, as the rolling screen 130 rolls, the attached contaminants of the ring screen 133 enter the filtrate and form a new filtrate film. The circulation pump 152 may discharge the filtered liquid into the circulation pipe 151 for filtration and cleaning, and may form a liquid flow in the topping up chamber 162 from the inlet 111 side to the outlet 112 side while discharging the filtered liquid into the topping up chamber 162. By means of the liquid flow in the liquid injection cavity 162, the dirt can be discharged to one side of the air outlet 112, and the new purified filtering liquid forms a clean filtering liquid film on the annular filter screen 133, so that the purification efficiency and the purification effect are greatly improved. The flow rate of the circulation pump 152 increases as the rolling speed of the rolling screen 130 increases, so that the flow rate of the priming chamber 162 meets the cleaning requirements of the annular screen 133. In some embodiments, the filtrate circulation assembly 150 may further be provided with a fluid replacement port or a fluid replacement device for replacing the filtrate according to the consumption of the filtrate.

In some embodiments, rolling screen 130 is spaced from outlet 112 to allow deposition of large particle filter droplets of attached contaminants. That is, the filtrate circulation assembly 150 forms a clean filtrate area upstream of the rolling screen 130 in the airflow direction such that the annular screen 133 contacts the cleaned filtrate; the filtrate circulation assembly 150 forms a contaminated filtrate area downstream in the air flow direction of the rolling screen 130, which contains contaminants cleaned from the ring screen 133 and also deposits large-particle filtrate attached with contaminants, and the filtrate in the contaminated filtrate area does not contact the ring screen 133, thereby preventing secondary contamination and making full use of the cleaning function of the filter 153.

The air purification apparatus 10 of the present embodiment further improves the control method in a targeted manner, so that the rolling speed of the rolling filter screen 130, the wind speed of the purified air flow, and the flow rate of the circulating pump 152 are adapted to the environmental humidity and the environmental pollution, thereby comprehensively improving the comfort level of the user. Fig. 6 is a schematic block diagram of control components in the air cleaning device 10 according to an embodiment of the present invention, and the air cleaning device 10 further includes: a particulate matter sensor 172, an air humidity sensor 173, a controller 171, and the like.

The particulate matter sensor 172 is configured to detect a concentration of particulate pollutants in the operating environment of the air purification device 10, which may be used to obtain particulate matter data such as PM2.5, PM10, etc. In some embodiments, the air purification apparatus 10 may further be configured with a gas concentration sensor, an odor sensor, and the like according to the requirement of air purification, so as to obtain other air parameters of the working environment of the air purification apparatus 10, such as carbon dioxide concentration, formaldehyde concentration, and irritant gas concentration.

The air humidity sensor 173 is configured to detect the air humidity of the environment in which the air purification apparatus 10 operates. Due to the wet dust removal adopted by the air purification device 10 of the present embodiment, the humidity in the air environment is also increased during the air purification process. Therefore, the air cleaning device 10 considers the air humidity of the working environment in addition to the pollution state of the working environment.

In addition to the above components, the air purification apparatus 10 may receive an operation instruction of a user through its own human-computer interaction device or a remote control device to obtain a control parameter of the user. The user can set the purification wind power and the target humidity and can check the current indoor air quality information.

The controller 171 may be in data connection with the particulate matter sensor 172, the air humidity sensor 173, the human-computer interaction device or the remote control device, and controls and adjusts the fan 120, the driving motor 134 of the rolling filter screen 130 and the circulating pump 152 according to the indoor air quality information.

For example, the fan 120 may be configured to activate when the particulate contaminant concentration is greater than a set concentration threshold, and cause the wind speed of the purge air stream to correspondingly decrease as the air humidity increases; the fan 120 may also be configured to activate when the particulate contaminant concentration is less than or equal to a set concentration threshold and the air humidity is less than a set humidity threshold, and cause the wind speed of the purge air stream to decrease accordingly as the air humidity increases.

The rolling filter screen 130 may also be configured such that its rolling speed increases or decreases with an increase or decrease in the velocity of the purified air stream. That is, when the wind speed of the purified air flow is high, the rolling filter screen 130 increases the rolling speed; rolling filter screen 130 reduces the rolling speed when the velocity of the purified air stream is low. So that the filtering liquid film of the ring-shaped filter screen 133 meets the requirement of purification.

Fig. 7 is a schematic diagram of a control method of the air cleaning device 10 according to one embodiment of the present invention. The control method may include:

step S702, the air purification apparatus 10 is turned on, and the air purification apparatus 10 may be turned on manually by a user, or may be turned on automatically, for example, by being turned on at regular time or automatically after meeting other turn-on conditions;

in step S704, indoor air quality data is obtained, wherein the air quality data at least includes a particulate pollutant concentration detected by the particulate matter sensor 172 and an air humidity detected by the air humidity sensor 173.

Step S706, determining whether the concentration of the particulate pollutant is greater than a concentration threshold, where the concentration threshold may be set according to a purification requirement, for example, the concentration threshold may be set to allow PM2.5 to reach 100ppm, and the specific concentration threshold may be configured according to an environmental requirement of a user, where the numerical values are merely examples.

Step S708, determining whether the air humidity is greater than a first humidity threshold, where the first humidity threshold may be set according to comfort requirements of users and environmental seasons, for example, the first humidity threshold may be set to be 60% RH, and specific values may be configured as needed, where the values are only examples;

step S710, determining whether the air humidity is greater than a second humidity threshold, where the second humidity threshold may be set according to the comfort requirement of the user and the environmental season, for example, the second humidity threshold may be set to 40% RH, and a specific value may be configured as needed, where the value is only an example, and the second humidity threshold may be set to be less than the first humidity threshold or equal to the first humidity threshold;

in step S712, if the particulate contaminant concentration is greater than the concentration threshold and the air humidity is greater than the first humidity threshold, the fan 120 is operated at a low gear and the rolling filter screen 130 is rotated at a low speed. Thereby avoiding further humidity increase while purifying.

In step S714, in the case that the concentration of particulate pollutants is greater than the concentration threshold and the air humidity is less than the first humidity threshold, or in the case that the concentration of particulate pollutants is less than the concentration threshold and the air humidity is less than the second humidity threshold, the fan 120 operates in high-grade, and the rolling filter screen 130 rotates at high speed. In the former case, the purification can be accelerated; in the latter case, the environment may be humidified.

In step S716, in the case that the concentration of the particulate pollutants is less than the concentration threshold and the air humidity is greater than the first humidity threshold, the blower 120 is stopped, and the rolling filter screen 130 stops rotating, i.e., the air purification apparatus 10 is stopped without purification and humidification.

Under the conditions of high-grade operation of the fan 120 and high-speed rotation of the rolling filter screen 130, for an example of the air purification device 10 of the embodiment, the purified air quantity can be ensured to be controlled at 300-500 m³And the rotating speed of the motor 134 of the rolling filter screen 130 is controlled within the range of 150-300 r/min.

Under the condition that the fan 120 runs at a low gear and the rolling filter screen 130 rotates at a low speed, for an example of the air purification device 10 of the embodiment, the purified air quantity can be ensured to be controlled at 100-150 m³And in the range of/h, the rotating speed of the motor 134 of the rolling filter screen 130 is controlled within the range of 50-100 r/min.

The specific value ranges may be configured according to the specifications of the fan 120 and the rolling filter screen 130. Accordingly, the circulation pump 152 may adjust the flow rate according to the rotation speed of the blower 120 and the rolling speed of the rolling filter screen 130, so that the filtrate meets the cleaning requirement.

The air purification device 10 of this embodiment guarantees that the liquid level of filtrate keeps at 20 ~ 50mm within ranges at the operation in-process, guarantees that annular filter screen 133 can fully contact with the filtrate. The annular filter 133 is made of silica gel and has a pore diameter of 0.5-3 mm. When the motor 134 drives the driving roller 131 to rotate, the ring-shaped filter 133 rotates along with the driving roller 131. Since the driven roller 132 is wholly or partially immersed in the filtrate, the bottom of the ring screen 133 is also immersed in the filtrate. With the endless screen 133 being rotated, the driven roller 132 is continuously immersed with the screen in the filtrate on one side thereof while being pulled out of the filtrate on the other side thereof.

The curtain surface and the pores of the annular filter screen 133 passing through the filtering liquid are covered with a layer of filtering liquid film. The ring filter 133 is rotated continuously, and the filtering liquid film is generated continuously. After the blower 120 is turned on, air enters the air purification apparatus 10 through the air inlet 111 and then passes through the ring filter 133. The filtering water film of the ring filter 133 effectively intercepts particulate matter and water-soluble gaseous pollutants. Contaminants adhered to the ring screen 133 are cleaned by the cleaning brush 140 and introduced into the filtrate. The bottom of the liquid injection chamber 162 is provided with a circulating pump 152 near one end of the fan 120. The circulation pump 152 delivers the filtered fluid near one end of the fan 120 to one end near the air inlet 111. The filtered liquid passes through the filter 153 (for example, a filter screen with a pore size of 0.1-0.4 mm) before entering the circulating pump 152, and particulate pollutants in the filtered liquid are intercepted and collected by the filter 153, so that an integrated mode of intercepting, cleaning and collecting the particulate pollutants is realized.

The air purification device 10 of the embodiment has a compact and simple structure, is convenient to implement, can effectively and reliably realize air purification, can enable the rolling speed of the rolling filter screen 130, the air speed of the purified air flow and the flow speed of the circulating pump 152 to be adapted to the environment humidity and the environment pollution condition through the optimization of the control process, and comprehensively improves the comfort level of users.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the utility model have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the utility model may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the utility model. Accordingly, the scope of the utility model should be understood and interpreted to cover all such other variations or modifications.

Claims

1. An air cleaning device characterized by comprising:

the liquid injection device comprises a shell, a liquid injection cavity and a ventilation air channel, wherein the liquid injection cavity is positioned at the bottom of the shell, the ventilation air channel is formed above the liquid injection cavity, and the liquid injection cavity is used for storing filter liquid;

a fan configured to cause a flow of purge air to be formed through the ventilation duct and out of the housing;

and the bottom of the rolling filter screen curtain is immersed in the filtering liquid, a part of screen surface of the rolling filter screen curtain is arranged in the ventilation air channel, and the rolling filter screen curtain is configured to enable the screen surface to rotate and roll, so that the screen surface soaked with the filtering liquid moves to the ventilation air channel to filter the flowing purified air flow.

2. The air purification apparatus according to claim 1, wherein the rolling filter screen comprises:

the driving roller is positioned at the upper part of the ventilation air duct;

3. Air cleaning device according to claim 2, characterized in that

The annular filter screen is made of silica gel materials, and the aperture of the filter holes is set to be 0.5-3 mm.

4. The air cleaning device according to claim 2, characterized by further comprising:

the cleaning brush, be on a parallel with the driven roller sets up, its brush head with the annular filter screen is located the part conflict in the driven roller outside, in order to right the annular filter screen is scrubbed.

5. Air cleaning device according to claim 1, characterized in that

The casing is square, and is provided with air intake and air outlet on its relative lateral wall, the ventilation flue connect in between air intake and the air outlet to

The fan is arranged at the air outlet.

6. Air cleaning device according to claim 5, characterized in that

The fan is a centrifugal fan, a fan air inlet of the centrifugal fan is opposite to the air outlet, and a fan air outlet of the centrifugal fan is arranged upwards.

7. The air purification apparatus of claim 5, further comprising a filtrate circulation assembly, and the filtrate circulation assembly comprises:

the liquid inlet end of the circulating pipe is connected to one side, close to the air outlet, of the liquid injection cavity, and the liquid discharge end of the circulating pipe is connected to one side, close to the air inlet, of the liquid injection cavity;

the circulating pump is configured to supply the filtrate back to the liquid injection cavity through the liquid discharge end after the filtrate is extracted from the liquid injection cavity through the liquid inlet end;

8. Air cleaning device according to claim 7, characterized in that

The circulation pump is configured to be activated as the rolling screen rolls, and the flow rate of the circulation pump increases correspondingly as the rolling speed of the rolling screen increases.

9. The air cleaning device according to claim 1, characterized by further comprising:

a particulate matter sensor configured to detect a concentration of particulate contaminants in an environment in which the air purification apparatus operates;

The fan is configured to activate when the concentration of particulate contaminants is greater than a set concentration threshold and cause a corresponding decrease in the velocity of the flow of purge air as the humidity of the air increases;

the fan is further configured to activate when the particulate contaminant concentration is less than or equal to a set concentration threshold and the air humidity is less than a set humidity threshold, and to cause a corresponding decrease in the wind speed of the purge air stream as the air humidity increases.

10. Air cleaning device according to claim 9, characterized in that

The rolling filter screen curtain is also configured to increase or decrease the rolling speed of the rolling filter screen curtain along with the increase or decrease of the wind speed of the purified air flow.