WO2021151361A1

WO2021151361A1 - Air purification device and air purifier having same

Info

Publication number: WO2021151361A1
Application number: PCT/CN2020/140349
Authority: WO
Inventors: 马曾文; 张霞; 梁桂源; 李胤媛
Original assignee: 珠海格力电器股份有限公司
Priority date: 2020-02-02
Filing date: 2020-12-28
Publication date: 2021-08-05

Abstract

An air purification device and an air purifier having same. The air purification device has an air flow channel (11) for air to pass through. The air purification device comprises a sterilization module, and the sterilization module comprises: a filter screen (20), which is disposed in the air flow channel (11) so as to filter air passing through the filter screen (20); and a heating device (30), which is disposed in the air flow channel so that the filter screen (20) is heated by means of the heating device (30). The air purification device solves the problem in which contagiousness of infectious disease viruses is relatively high and causes harm to human health.

Description

Air purifying device and air purifier having the same

This application is required to be submitted to the State Intellectual Property Office of China on August 3, 2020, the application number is 202010771177.7, and the invention title is a patent application of "a sterilization device and air purifier" and it is submitted to China on February 2, 2020. The State Intellectual Property Office, the application number is 202010078098.8, and the invention title is "air purification device and air purifier with the same" patent application.

Technical field

This application relates to the field of air purification, and in particular, to an air purification device and an air purifier having the same.

Background technique

At present, airborne transmission is an important way of spreading the virus. Airborne transmission refers to the entire process experienced by pathogens after they are discharged from the source of infection and invade new susceptible hosts through the air.

The three modes of airborne transmission of infectious diseases are: droplet transmission, droplet nuclear transmission and dust transmission.

For droplet transmission, the pathogens of respiratory infectious diseases exist in the mucus on the surface of the respiratory tract mucosa or in the fragments of ciliated epithelial cells. When the patient breathes, speaks loudly, crying, snoring, coughing, sneezing, it can be from the nasopharynx It sprays a large amount of mucus droplets containing pathogens, small in size (15-100μm), and suspended in the air for a short time (usually no more than a few seconds). The scope of droplet transmission is limited to close contacts of the patient or carrier. Epidemic cerebrospinal meningitis, influenza, whooping cough, etc. can be spread in this way. Crowded temporary work sheds, detention centers or prisons, passenger cabins, and station waiting rooms are common places for such transmission.

Spreading by droplet nuclei means that droplets containing pathogens discharged from the source of infection are suspended in the air. They lose water due to evaporation, leaving behind smiling particles with a protein shell, which contain pathogens and become droplet nuclei. This droplet nucleus can be suspended in the air for several hours or even longer, and the floating distance is also relatively long. Inhalation of droplet nuclei with pathogens causes infection, which is called droplet nucleus transmission. Infectious diseases with strong pathogen resistance, such as diphtheria, scarlet fever, tuberculosis, etc., can be spread by droplet nuclei.

For dust transmission, the secretions containing pathogens fall on the ground in large droplets, and form dust after drying. Due to people's activities, the dust resuspends in the air and is inhaled to cause transmission. All pathogens with strong external resistance, such as Mycobacterium tuberculosis, can be spread through dust.

The occurrence of airborne transmission depends on many conditions, among which population density, sanitary conditions, and the proportion of susceptible persons in the population play a decisive role.

The main working principle of the air purification device in some embodiments is: drawing air into the machine and filtering the air through a built-in filter, which can mainly filter dust, odors, and toxic gases and kill some bacteria. However, the air purification device in some embodiments cannot effectively kill the virus carried in the air, and it is difficult to block the spread of the virus, which makes the virus highly infectious, which is not conducive to people's healthy life.

Summary of the invention

The main purpose of the present application is to provide an air purification device and an air purifier having the same, so as to solve the problem that the air purification device in some embodiments is difficult to kill viruses carried in the air.

In order to achieve the above objective, according to one aspect of the present application, an air purification device is provided, which has an air flow path for air to pass through. The air purification device includes a sterilization module, and the sterilization module includes a filter net which is arranged in the air flow path. , In order to filter the air passing through the filter; heating device, the heating device is arranged in the air flow channel, so that the filter is heated by the heating device.

Further, the filter screen and the heating device are both plate-shaped structures; along the air flow direction of the air flow path, the heating device is arranged upstream of the filter screen, or the heating device is arranged downstream of the filter screen.

Further, along the air flow direction of the air flow channel, heating devices are provided on both sides of the filter screen.

Further, the filter screen has a plate-like structure, and the heating device extends along the circumferential direction of the filter screen.

Further, the filter is a HEPA filter.

Further, there are multiple sterilization modules, and the multiple sterilization modules are arranged in sequence along the air flow direction of the air flow channel.

Further, the air purification device further includes: a housing with an air inlet and an air outlet communicating with the air flow channel; a fan, and the fan is arranged in the air flow channel so that air enters the air flow channel from the air inlet and flows from the air outlet Outflow.

Further, along the air flow direction of the air flow channel, fans are provided on both sides of the sterilization module.

Further, the air flow channel extends in a vertical direction, and the air inlet and the air outlet are arranged at both ends of the air flow channel; or the air flow channel extends in a horizontal direction, and the air inlet and the air outlet are arranged at both ends of the air flow channel; Alternatively, the air flow channel is annular, and the air inlet and the air outlet both extend along the circumference of the housing to surround the air flow channel.

Further, the air purification device further includes a filter module, which is arranged upstream of the sterilization module along the air flow direction of the air flow channel to perform primary filtering on the air entering the air flow channel.

Further, the filter module is a plasma sterilization and disinfection device.

Further, there are multiple filter modules, and the multiple filter modules are arranged in sequence along the gas flow direction of the air flow channel.

According to another aspect of the present application, there is provided an air purifier including an air purifying device, and the air purifying device is the aforementioned air purifying device.

The air purification device in the present application has an air flow path for air to pass through. In order to achieve the sterilization function, the air purification device includes a sterilization module. The sterilization module includes a filter screen and a heating device. The filter screen is arranged in the air flow path to filter The air of the net is filtered; the heating device is arranged in the air flow channel, and the heating device is arranged adjacent to the filter net to heat the filter net by the heating device. In this way, the viruses, bacteria, etc. accumulated on the filter are killed under the high temperature of the filter, which has the effect of sterilization and detoxification, and achieves the purification of the air, thereby arbitrarily spreading the virus in the air and solving the infection. Viruses of sexual diseases are highly contagious and cause harm to human health.

Description of the drawings

The drawings of the specification forming a part of the application are used to provide a further understanding of the application, and the exemplary embodiments and descriptions of the application are used to explain the application, and do not constitute an improper limitation of the application. In the attached picture:

Figure 1 shows a schematic structural diagram of a first embodiment of an air purification device according to the present application; and

Fig. 2 shows a schematic diagram of the structure between the filter screen and the heating device of the second embodiment of the air purification device according to the present application.

Among them, the above drawings include the following reference signs:

10. Shell; 11. Air flow channel; 12. Air inlet; 13. Air outlet; 20. Filter; 30. Heating device; 40. Fan; 50. Filter module.

Detailed ways

It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other if there is no conflict. Hereinafter, the present application will be described in detail with reference to the drawings and in conjunction with the embodiments.

It should be pointed out that the following detailed descriptions are all illustrative and are intended to provide further explanations for the application. Unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

It should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the term "comprising" or "including" is used in this specification, it indicates the presence of the characteristic , Steps, operations, devices, components, or combinations thereof; when the terms "comprising" and "including" are used in this specification, they indicate the existence of features, steps, operations, devices, components, and combinations thereof.

This application provides an air purification device with an air flow passage 11 for air to pass through. Please refer to Figures 1 and 2. The air purification device includes a sterilization module. The air passage 11 is used to filter the air passing through the filter screen 20; the heating device 30 is arranged in the air flow passage 11 to heat the filter screen 20 through the heating device 30.

The air purification device in the present application has an air flow passage 11 for air to pass through. In order to realize the sterilization function, the air purification device includes a sterilization module. The sterilization module includes a filter 20 and a heating device 30. The filter 20 is arranged in the air flow passage 11. The heating device 30 is arranged in the air flow channel 11, and the heating device 30 is arranged adjacent to the filter screen 20 to heat the filter screen 20 through the heating device 30. In this way, the viruses, bacteria, etc. accumulated on the filter are killed under the high temperature of the filter, which has the effect of sterilization and detoxification, and achieves the purification of the air, thereby arbitrarily spreading the virus in the air and solving the infection. Viruses of sexual diseases are highly contagious and cause harm to human health.

Specifically, the heating device 30 is arranged adjacent to the filter screen 20; or, the heating device 30 is connected to the filter screen 20; or, the heating device 30 and the filter screen 20 are arranged in an integrated structure or integrally formed.

In the present application, the arrangement of the filter screen 20 and the heating device 30 can be as follows:

In the first embodiment of the present application, the filter screen 20 and the heating device 30 are both plate-shaped structures; along the air flow direction of the air flow channel 11, the heating device 30 is arranged upstream of the filter screen 20.

In the second embodiment of the present application, as shown in FIG. 1, the filter screen 20 and the heating device 30 are both plate-shaped structures; along the air flow direction of the air flow path 11, the heating device 30 is arranged downstream of the filter screen 20 . At this time, the heat emitted by the heating device 30 can be better transferred to the filter screen 20 driven by the airflow, which is more conducive to killing the virus.

In the third embodiment of the present application, along the air flow direction of the air flow channel 11, heating devices 30 are provided on both sides of the filter screen 20. By providing heating devices both upstream and downstream of the filter screen 20, the filter screen 20 can be heated to a greater extent and the heating time for the filter screen 20 can be shortened.

In the fourth embodiment of the present application, as shown in FIG. 2, the filter screen 20 has a plate-like structure, and the heating device 30 extends along the circumferential direction of the filter screen 20. Preferably, the heating device 30 has a ring structure, and the heating device 30 is arranged around the filter screen 20.

According to the actual situation, the sterilization module includes a plurality of filter screens 20, and the plurality of filter screens 20 are sequentially stacked along the gas flow direction of the air flow channel 11, thereby improving the sterilization effect.

Specifically, the specific form of the filter net 20 in this embodiment is: the filter net 20 is a HEPA filter net. HEPA (High efficiency particulate air Fileter), Chinese means high efficiency air filter device, a filter that meets the HEPA standard, has an effective rate of more than 99.7% for 0.1 micron and 0.3 micron, and is the most effective for pollutants such as smoke, dust, and bacteria. Filter the medium. HEPA is divided into five materials: PP filter paper, glass fiber, composite PPPET filter paper, melt-blown polyester non-woven fabric and melt-blown glass fiber.

In order to improve the sterilization effect, there are multiple sterilization modules, and the multiple sterilization modules are arranged in sequence along the air flow direction of the air flow channel 11. In this way, the sterilization effect can be submitted to ensure the sterilization efficiency.

The main structure of the air purification device in this embodiment is: the air purification device further includes a housing 10 and a fan 40. The housing 10 has an air inlet 12 and an air outlet 13 communicating with the air flow path 11; In the duct 11, the air enters the air flow duct 11 from the air inlet 12 and flows out from the air outlet 13. By providing the air inlet 12, the air outlet 13 and the fan 40, the normal gas flow in the air flow channel 11 can be ensured.

In order to ensure the rapid flow of gas, fans 40 are provided on both sides of the sterilization module along the air flow direction of the air flow channel 11.

The arrangement of the air flow channels in this embodiment can be as follows:

In the first embodiment of the present application, as shown in FIG. 1, the air flow channel 11 extends in a vertical direction, and the air inlet 12 and the air outlet 13 are arranged at both ends of the air flow channel 11. Preferably, the air inlet 12 is arranged below the air outlet 13.

In the second embodiment of the present application, the air flow channel 11 extends in a horizontal direction, and the air inlet 12 and the air outlet 13 are provided at both ends of the air flow channel 11.

In the third embodiment of the present application, the air flow channel 11 is annular, and the air inlet 12 and the air outlet 13 both extend along the circumference of the housing 10 to surround the air flow channel 11. According to the actual situation, the air flow passage 11 may also have a non-closed ring shape, and the air flow passage 11 extends along the circumferential direction of the housing 10.

In order to ensure the filtering effect, as shown in FIG. 1, the air purification device further includes: a filter module 50 along the air flow direction of the air flow path 11. The air undergoes primary filtration. By providing the filter module 50 inside the air inlet 12 of the housing 10, the air entering through the air inlet 12 can be preliminarily filtered.

In this embodiment, the filter module 50 is a plasma sterilization device.

The plasma sterilization and disinfection device in this embodiment includes an ionization component, the ionization component is connected to a power supply, the ionization component includes nano conductive wires, the nano conductive wires are arranged crosswise, a nano conductive grid is formed on the ionization component, and the current generated by the power flows through The nano-conductive grid ionizes the ionization components to generate high-concentration plasma, which can sterilize and disinfect the air.

An implementation of the ionization component in this embodiment is that the nano conductive filaments are composed of nanofiber bundles, and the nanofiber bundles are formed by mixing two or more kinds of soft nanowires, which have good conductivity. The nanofiber bundles are knitted to form a porous, net-like flexible fiber net. The flexible fiber net can be woven into a hexagonal hole net structure, or it may be woven into a triangular hole or rectangular hole net structure. The nanowires can be nano-scale carbon fibers, nano-scale metal wires, or other nano-scale materials.

Another implementation of the ionization component in this embodiment is that the ionization component uses a flexible circuit board as a substrate, and etches nano-scale conductive materials (such as nano-scale metal materials) onto the flexible circuit through an etching process. On the surface of the board, a nano-scale net-like or other-shaped structure is formed, that is, a nano-conductive grid. The nano conductive grid formed by etching can be a branched structure of a dendritic shape, or a triangular, rectangular and hexagonal grid structure.

In order to improve the filtering effect, there are multiple filtering modules 50, and the multiple filtering modules 50 are arranged in sequence along the gas flow direction of the air flow channel 11.

The present application also provides an air purifier, including an air purifying device, and the air purifying device is the above-mentioned air purifying device.

From the above description, it can be seen that the above-mentioned embodiments of the present application achieve the following technical effects:

It should be noted that the terms “first” and “second” in the specification and claims of the application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in a sequence other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any variations of them are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those clearly listed. Those steps or units may include other steps or units that are not clearly listed or are inherent to these processes, methods, products, or equipment.

For ease of description, spatial relative terms can be used here, such as "above", "above", "above the surface", "above", etc., to describe as shown in the figure Shows the spatial positional relationship between one device or feature and other devices or features. It should be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation of the device described in the figure. For example, if the device in the drawing is turned upside down, then a device described as "above other devices or structures" or "above other devices or structures" will then be positioned as "below the other devices or structures" or "on Under other devices or structures". Thus, the exemplary term "above" may include both orientations "above" and "below". The device can also be positioned in other different ways (rotated by 90 degrees or in other orientations), and the relative description of the space used here will be explained accordingly.

The foregoing descriptions are only preferred embodiments of the application, and are not intended to limit the application. For those skilled in the art, the application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the protection scope of this application.

Claims

An air purification device having an air flow channel (11) for air to pass through, characterized in that the air purification device includes a sterilization module, and the sterilization module includes:

A filter screen (20), the filter screen (20) is arranged in the air flow channel (11) to filter the air passing through the filter screen (20);

A heating device (30), the heating device (30) is arranged in the air flow channel (11) to heat the filter screen (20) through the heating device (30).
The air purification device according to claim 1, wherein the filter screen (20) and the heating device (30) are both plate-shaped structures; along the air flow direction of the air flow channel (11), The heating device (30) is arranged upstream of the filter screen (20), or the heating device (30) is arranged downstream of the filter screen (20).
The air purification device according to claim 1, characterized in that, along the air flow direction of the air flow channel (11), the heating device (30) is provided on both sides of the filter screen (20).
The air purification device according to claim 1, wherein the filter screen (20) has a plate-like structure, and the heating device (30) extends along the circumferential direction of the filter screen (20).
The air purification device according to any one of claims 1 to 4, wherein the filter screen (20) is a HEPA filter screen.
The air purification device according to any one of claims 1 to 4, characterized in that there are multiple sterilization modules, and the multiple sterilization modules are arranged in sequence along the air flow direction of the air flow channel (11) .
The air purification device according to any one of claims 1 to 4, wherein the air purification device further comprises:

A housing (10), the housing (10) has an air inlet (12) and an air outlet (13) communicating with the air flow channel (11);

The fan (40) is arranged in the air flow channel (11) so that air enters the air flow channel (11) from the air inlet (12) and flows from the air outlet (11). 13) Outflow.
The air purification device according to claim 7, characterized in that, along the air flow direction of the air flow channel (11), both sides of the sterilization module are provided with the fans (40).
The air purification device according to claim 7, wherein the air flow channel (11) extends in a vertical direction, and the air inlet (12) and the air outlet (13) are arranged in the air flow Or, the air flow channel (11) extends in a horizontal direction, and the air inlet (12) and the air outlet (13) are arranged at both ends of the air flow channel (11). Or, the air flow channel (11) is annular, the air inlet (12) and the air outlet (13) both extend along the circumference of the housing (10) to surround the air flow channel (11) Setting.
The air purification device according to any one of claims 1 to 4, wherein the air purification device further comprises:

The filter module (50) is arranged along the air flow direction of the air flow channel (11), and the filter module (50) is arranged upstream of the sterilization module to prevent the air entering the air flow channel (11). Perform primary filtration.
The air purification device according to claim 10, wherein the filter module (50) is a plasma sterilization device.
The air purification device according to claim 10, characterized in that there are a plurality of said filter modules (50), and the plurality of said filter modules (50) are arranged in sequence along the gas flow direction of the air flow channel (11) .
An air purifier comprising an air purifying device, characterized in that the air purifying device is the air purifying device according to any one of claims 1 to 12.