CN112682895A

CN112682895A - Air purification device, air purification method and air purifier

Info

Publication number: CN112682895A
Application number: CN202110143005.XA
Authority: CN
Inventors: 汪春节; 劳承云; 张秋俊; 封宗瑜; 罗汉兵; 张弛; 陈协; 凌业生; 丁泺火; 马明宇; 石磊; 胡逢亮; 刘玉婷
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-02-02
Filing date: 2021-02-02
Publication date: 2021-04-20
Anticipated expiration: 2041-02-02
Also published as: CN112682894A; CN112682894B; CN111156624A; CN112682895B

Abstract

The invention provides an air purification device, an air purification method and an air purifier, wherein the air purification device is provided with an air flow passage for air to pass through, and the air purification device comprises: a sterilization module, the sterilization module comprising: the filter screen assembly is arranged in the air flow channel and is used for filtering the air passing through the filter screen assembly; the heating device is arranged in the air flow channel and used for heating the filter screen assembly; the plasma sterilization and disinfection device is arranged at the upstream of the sterilization module along the airflow flowing direction of the air flow channel so as to sterilize and disinfect the air entering the air flow channel; the temperature protection device is at least partially arranged in the air flow channel, and the temperature protection device enables the temperature of a filter screen of the filter screen assembly not to exceed the tolerance temperature of the filter screen by controlling the heating power of the heating device.

Description

Air purification device, air purification method and air purifier

Technical Field

The invention relates to the field of air purification, in particular to an air purification device, an air purification method and an air purifier.

Background

Currently, airborne transmission is an important mode of transmission of viruses. Airborne transmission refers to the entire process of air invasion into a new susceptible host after the pathogen has been expelled from the source of infection.

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

When a patient breathes, speaks loudly, cries, snores, coughs or sneezes, pathogens of respiratory infectious diseases exist in mucus on the surface of a respiratory mucosa or in fragments of ciliated epithelial cells, a large amount of mucus droplets containing the pathogens can be ejected from the nasopharynx, the size is small (15-100 mu m), and the mucus droplets can be suspended in the air for a short time (generally, no more than a few seconds). The extent of droplet spread is limited to close contact between the patient or the carrier. Epidemic cerebrospinal meningitis, influenza, pertussis, etc. can be transmitted in this manner. Crowded temporary shelters, detention houses or prisons, numerous cabins for passengers, station waiting rooms are common places where such spread occurs.

In the case of droplet nuclear transmission, droplets containing pathogens are discharged from an infectious agent and suspended in the air, and water is lost by evaporation, leaving smiling particles of protein coat containing pathogens and forming droplet nuclei. The spray core can be suspended in air for hours or even longer, and the floating distance is longer. Inhalation of the droplet nucleus with the pathogen causes infection, known as droplet nucleus transmission. Pathogen resistance can spread infectious diseases such as diphtheria, scarlet fever, tuberculosis, etc., through the droplet nucleus.

For the transmission of dust, secretion containing pathogens falls on the ground in large droplets, and forms dust after drying, and the dust is resuspended in the air due to the movement of people and is inhaled by people to cause the transmission. All pathogens with strong resistance to the outside, such as tubercle bacillus, can be transmitted by dust.

The occurrence of airborne transmission depends on a variety of conditions, among which population density, hygiene conditions, the proportion of susceptible persons in the population plays a decisive role.

The main working principle of the air purification device in the prior art is as follows: air is pumped into the machine and filtered through the built-in filter screen, so that the dust, peculiar smell and toxic gas nuclei can be filtered to kill partial bacteria. However, the air purification device in the prior art cannot effectively kill viruses carried in the air, so that the transmission of the viruses is difficult to block, the infectivity of the viruses is high, and the air purification device is not beneficial to the healthy life of people.

Disclosure of Invention

The invention mainly aims to provide an air purification device, an air purification method and an air purifier, and aims to solve the problem that viruses carried in air are difficult to kill by the air purification device in the prior art.

In order to achieve the above object, according to a first aspect of the present invention, there is provided an air cleaning device having an air flow passage through which air passes, the air cleaning device comprising: a sterilization module, the sterilization module comprising: the filter screen assembly is arranged in the air flow channel and is used for filtering the air passing through the filter screen assembly; the heating device is arranged in the air flow channel and used for heating the filter screen assembly; the plasma sterilization and disinfection device is arranged at the upstream of the sterilization module along the airflow flowing direction of the air flow channel so as to sterilize and disinfect the air entering the air flow channel; the temperature protection device is at least partially arranged in the air flow channel and controls the heating power of the heating device to ensure that the temperature of the filter screen assembly does not exceed the tolerance temperature of the filter screen.

Further, the temperature protection device comprises an overheating protection component, wherein the overheating protection component is arranged in the air flow channel and is connected with the heating device so as to enable the heating device to stop heating after the temperature of the overheating protection component exceeds a preset temperature; or, the temperature protection device comprises a temperature detection part, at least part of the temperature detection part is arranged in the air flow passage to detect the temperature in the air flow passage, and the heating device is controlled to heat or stop heating according to the detection result of the temperature detection part.

Further, the heating device is disposed upstream of the filter screen assembly in the flow direction of the air flow in the air flow passage.

Further, the heating device is of an annular structure, and the filter screen assembly is arranged in a cavity surrounded by the heating device.

Further, the sterilization module includes a plurality of filter screen assemblies, and the plurality of filter screen assemblies are distributed along the air flow direction of the air flow passage.

Furthermore, the filter screen assembly and the heating device are both of plate-shaped structures; and/or the filter screen assembly includes a HEPA filter screen.

Further, the air purification device further includes: the shell is provided with an air inlet and an air outlet which are communicated with the air flow channel; and the fan is arranged in the air flow channel so that air enters the air flow channel from the air inlet and flows out from the air outlet.

Furthermore, the air flow channel extends along the vertical direction, and the air inlet and the air outlet are arranged at two ends of the air flow channel; or the air flow channel extends along the horizontal direction, and the air inlet and the air outlet are arranged at the two ends of the air flow channel; or the air flow channel is annular, and the air inlet and the air outlet both extend along the circumferential direction of the shell to surround the air flow channel.

Further, the air purification device further includes: and the primary filter screen is arranged at the upstream of the plasma sterilization and disinfection device along the airflow flowing direction in the air flow channel.

Further, the primary filter screen comprises a support frame and a filter screen part, and the filter screen part is detachably arranged on the support frame.

Further, the maximum effective distance S between the plasma sterilization and disinfection device and the filter screen of the filter screen assembly is as follows:

(ii) a Wherein S is greater than or equal to 0, the unit of S is m, and u is the loading voltage value of the high-voltage electrode of the plasma sterilization and disinfection device, and the unit is kV; u. of₀The initial discharge voltage value of the high-voltage electrode is the unit of kV; v is the wind at the air inlet communicated with the air flow passageSpeed, in m/s; k1 and k2 are respectively the influence coefficients of the loading voltage and the wind speed at the air inlet on the maximum effective distance S, and k3 is a constant term coefficient.

Further, u₀The value range of (a) is between 2kv and 3kv, the value of k1 is 0.06, the value of k2 is 0.5, and the value of k3 is-0.02.

Further, the tolerance temperature of the virus is T1, and the tolerance temperature of the filter screen is T2; wherein, the value range of the working temperature T of the filter screen is set as follows: t1< T2.

Furthermore, the working temperature of a filter screen of the filter screen assembly is in a direct proportion relation with the heating power of the heating device; and/or the working temperature of the filter screen component is in a direct proportion relation with the working environment temperature; and/or the working temperature of the filter screen assembly is in inverse proportion to the distance from the filter screen to the heating device.

Further, setting the working temperature of a filter screen of the filter screen assembly as T, the working environment temperature as T, the heating power of the heating device as P, the distance from the filter screen to the heating device as D, and the air volume in the air flow channel as L; wherein, (T-0.1009P +0.2365L +3.84D-0.000003P²-0.0051t²-0.000094L²-0.0007D²+0.000319 pt +0.000001P L +0.001169P D-0.00038t L-0.0074t D +0.00317L D)/t is less than or equal to 14.55; wherein the heating power P ranges from 400W to 4000W; and/or the value range of the environmental temperature t is-10 ℃ to 60 ℃; and/or the value range of the air volume L is 0-900m 3/h; and/or the distance D ranges from 0cm to 60 cm.

Further, the filter screen assembly includes: the filter unit comprises at least two discharge plates and filter parts, discharge spaces are formed between every two adjacent discharge plates, and at least one filter part is arranged in each discharge space so as to treat bacteria and/or viruses retained on the corresponding filter part when discharge reaction occurs between every two adjacent discharge plates.

Further, the at least two discharge plates include: the filter device comprises a first discharge plate, a second discharge plate and a third discharge plate, wherein the first discharge plate, the second discharge plate and the third discharge plate are arranged at intervals along a first preset direction, and a plurality of filter parts are arranged between the first discharge plate and the third discharge plate; wherein, the number of the second discharge plates is one; or the second discharge plates are arranged at intervals along the first preset direction.

Further, the air purification device comprises a first purification mode and a second purification mode, and when the air purification device is in the first purification mode, the heating device is in a working state; when the air purification device is in the second purification mode, the heating device is in a non-working state.

Further, the air purification device further includes: the cooling module, at least part setting of cooling module is in the air runner, along the extending direction of air runner, and the cooling module setting is in the low reaches of sterilization module to cool down the air through sterilization module.

Further, when the air purification device is in the first purification mode or when the temperature of the gas passing through the cooling module is greater than the preset temperature, the cooling module is in a working state; when the air purification device is in the second purification mode and when the temperature of the gas passing through the cooling module is less than or equal to the preset temperature, the cooling module is in a non-working state.

Furthermore, the cooling module comprises a plurality of refrigerant pipes for containing refrigerants, a first connecting support and a second connecting support, wherein the first connecting support and the second connecting support are arranged at two opposite ends of the plurality of refrigerant pipes; the first connecting bracket and the second connecting bracket are detachably connected with the shell.

Further, the heating device comprises a heating body and a heat insulation shell, the heat insulation shell is provided with a heat insulation cavity, the heating body is arranged in the heat insulation cavity, and the heat insulation shell is used for being arranged on the shell of the air purification device; the heat insulation shell is provided with a heat insulation air inlet and a heat insulation air outlet, and the heat insulation air inlet and the heat insulation air outlet are communicated with the heat insulation cavity, so that gas enters the heat insulation cavity from the heat insulation air inlet and flows out from the heat insulation air outlet.

Further, the heat-generating body includes the installation end, and the thermal-insulated casing includes: the first shell part is covered on the heating body and is provided with an avoiding opening for avoiding the mounting end; and the second shell part is covered on the avoiding opening to cover the mounting end.

Further, the heating device further includes: the mounting bracket is matched with the mounting end to support the mounting end through the mounting bracket.

Furthermore, the heating body comprises a heating tube and a plurality of heating fins arranged on the heating tube, and the plurality of heating fins are arranged at intervals along the extension direction of the heating tube; the heating tube is provided with a plurality of heating bodies, and the distribution direction of the plurality of heating bodies is vertical to the extension direction of the heating tube; the mounting end includes respective ends of the heat generating tubes of the plurality of heat generating bodies.

Further, the air purification device further includes: the sterilizing device is arranged in the air flow channel, and a medium emitting part of the sterilizing device is arranged towards the filter screen assembly to send a sterilizing medium to the filter screen assembly so as to sterilize the filter screen assembly through the sterilizing medium; when the air purification device comprises the first working mode, the sterilization module is in a working state, and the sterilization device is in a non-working state; when the air purification device is in the second working mode, the sterilization module is in a non-working state, and the sterilization device is in a working state.

Further, the air purification device further includes: the temperature sensing probe of the temperature sensing device is positioned in the air flow channel so as to detect the temperature in the air flow channel; the fan is arranged in the air flow channel and used for driving the air to pass through the air flow channel; the fan comprises fan blades and a motor for driving the fan blades to rotate so as to control the rotating speed of the motor according to the detection temperature of the temperature sensor.

According to a second aspect of the present invention, there is provided an air purification method, which is applied to the above air purification apparatus, the air purification method comprising: step S10, detecting the temperature of the filter screen component of the sterilization module; in step S20, the heating device of the sterilization module is turned off after the temperature of the filter screen assembly is maintained at 56 ℃ to 200 ℃ for a first predetermined time.

Further, the air purification method further includes: step S30, after the heating device is in the off state for the second predetermined time, step S10 is executed again.

According to a third aspect of the present invention, there is provided an air purifier comprising the air purifying device described above.

The air purification device of the present invention has an air flow passage through which air passes, and includes: a sterilization module, the sterilization module comprising: the filter screen assembly is arranged in the air flow channel and is used for filtering the air passing through the filter screen assembly; the heating device is arranged in the air flow channel and used for heating the filter screen assembly; the plasma sterilization and disinfection device is arranged at the upstream of the sterilization module along the airflow flowing direction of the air flow channel so as to sterilize and disinfect the air entering the air flow channel; and at least part of the temperature limiter is arranged in the air flow channel so as to detect the temperature in the air flow channel and control the heating device to be switched on or switched off according to the detection result of the temperature limiter. Like this, the plasma sterilizing and disinfecting device disinfects and disinfects the air that gets into in the air runner, and the filter screen subassembly carries out further filtration to virus, bacterium etc. and virus, bacterium etc. that accumulate on the filter screen subassembly are killed under the high temperature effect of filter screen, and then play the effect of disinfecting and disinfecting, have realized the purification to the air to block the propagation of the virus in the air, solved the infectivity of the virus of infectious disease stronger and cause the problem of harm to human health.

According to the invention, by arranging the plasma sterilization device, the HEPA-level filtering device and the high-temperature heating device, not only can the virus protein and the bacterial cell wall be effectively destroyed by the plasma sterilization device, but also a trace of bacterial viruses which escape from the plasma sterilization module and are not killed by the plasma sterilization device are trapped by the HEPA net again, and the bacteria or viruses on the HEPA net are subjected to secondary high-temperature disinfection by the high-temperature heating device, so that the secondary filtering, sterilization and disinfection are realized, and the trace of bacterial viruses are prevented from escaping by adopting the double-insurance mode.

The air purification device fully utilizes the sterilization and disinfection functions of the plasma sterilization device, the filtering function of the HEPA grade filtering device and the 56 ℃ high-temperature disinfection function of the high-temperature heating device, further realizes the organic combination of three means of killing, filtering and eliminating, and mutually promotes the three means of killing, filtering and eliminating.

Therefore, the air purification device can effectively capture and kill the viruses in the air and reduce the concentration of the viruses in the air. In addition, experiments prove that the air purification device can kill 99.99 percent or more of new coronavirus in the air within 1 hour, thereby effectively blocking the transmission of the new coronavirus and improving the safety of users.

The new crown epidemic situation which is as unprecedented changes the lives of a plurality of people, the attention degree of people to the health reaches the unprecedented level, the mask is daily, and the sterilization and virus removal air purification device becomes one of the life-saving straws of a plurality of families. In the case of this danger, the air purification device of the present application should be operated.

As an initial product in the field of air purification, if the air purification device is applied, the spread of viruses and bacteria can be greatly reduced, and at the present time when the new crown epidemic situation is so serious, the whole country and even the world urgently need to introduce the air purification device to block the spread of viruses and effectively control the epidemic situation.

In addition, the air purification device of the invention has low cost and can be applied to the fields of families, businesses and offices on a large scale.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic construction of a first embodiment of an air cleaning device according to the invention;

fig. 2 is a schematic structural view showing a filter net and a heating device of a second embodiment of the air cleaning device according to the present invention;

FIG. 3 is a graph showing the collection efficiency of the plasma sterilization and disinfection device of the air purification device of the present invention for particulate matter of different particle sizes;

FIG. 4 shows the variation of the electrostatic potential on the surface of the filter screen when the plasma sterilization module is at a working voltage of 18kV and the filter screen is at different distances from the high-voltage electrode of the plasma sterilization module;

FIG. 5 illustrates a schematic structural view of one embodiment of a filter screen assembly of an air purification apparatus according to the present invention;

fig. 6 shows a schematic construction of another embodiment of a screen assembly of an air cleaning device according to the invention;

fig. 7 is a schematic structural view showing details of an embodiment of the air cleaning apparatus according to the present invention;

fig. 8 is a schematic structural view showing an embodiment of a heating apparatus of an air cleaning apparatus according to the present invention;

fig. 9 shows an exploded view of a heating device of the air cleaning device in fig. 8;

FIG. 10 illustrates a schematic view of a first housing portion of the insulated housing of the air purification apparatus of FIG. 8;

FIG. 11 illustrates a schematic view of a second housing portion of the insulated housing of the air purification apparatus of FIG. 8;

FIG. 12 illustrates a schematic view of a third housing portion of the insulated housing of the air purification apparatus of FIG. 8;

FIG. 13 is a schematic view showing a structure of a heat generating body of the air cleaning apparatus of FIG. 8 in cooperation with a heat insulating module and a mounting frame;

fig. 14 is a schematic structural diagram of an air outlet grille of the air purifying device in fig. 8;

FIG. 15 shows a schematic view of the installation between the heating device of FIG. 8 and the housing;

fig. 16 is a schematic structural view showing another embodiment of the air cleaning apparatus according to the present invention;

FIG. 17 is a schematic structural view showing an embodiment of a sterilization module of the air cleaning apparatus according to the present invention; and

fig. 18 shows a top view of the sterilization module of the air purification apparatus of fig. 17.

Wherein the figures include the following reference numerals:

10. a housing; 11. an air flow passage; 12. an air inlet; 13. an air outlet; 14. an inner housing; 15. an air inlet frame; 16. an air outlet frame; 17. an outer housing; 18. a heat preservation cavity;

20. a screen assembly; 21. a first discharge plate; 22. a second discharge plate; 23. a third discharge plate; 26. a ground plate; 27. a filter screen block; 271. partitioning a filter screen; 28. a conductive post; 29. connecting sheets;

30. a heating device; 31. a heating element; 311. a heat generating tube; 312. a heat-generating fin; 32. a thermally insulated housing; 324. a first housing portion; 3241. avoiding the opening; 325. a second housing portion; 3251. avoiding the groove; 3253. a main body portion; 3254. a connecting portion; 327. a third housing portion; 3271. a heat insulation air inlet; 3272. a main board body; 3273. a first hem portion; 3274. a second flange portion; 330. a mounting frame; 340. an insulating assembly; 341. a thermal insulation member; 342. a thermally insulated channel; 350. an air outlet grille;

40. a fan; 41. a motor; 42. a fan blade; 50. a plasma sterilization and disinfection device; 61. a cooling module; 611. a first connecting bracket; 612. a second connecting bracket; 613. a refrigerant pipe; 62. a primary filter screen;

70. a heat transfer member; 71. a power supply member; 72. a temperature sensing member; 73. a feedback module; 74. an air duct;

80. a temperature sensor; 90. a temperature limiter.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The present invention provides an air purification apparatus having an air flow passage 11 through which air passes, referring to fig. 1 and 2, the air purification apparatus includes a sterilization module, the sterilization module includes: a filter screen assembly 20, the filter screen assembly 20 being disposed in the air flow passage 11 to filter air passing through the filter screen assembly 20; a heating device 30, wherein the heating device 30 is arranged in the air flow passage 11, so that the filter screen assembly 20 is heated by the heating device 30; the plasma sterilization and disinfection device 50 is arranged at the upstream of the sterilization module along the airflow flowing direction of the air flow channel 11, so as to sterilize and disinfect the air entering the air flow channel 11; and the temperature protection device is at least partially arranged in the air flow channel 11, and the temperature protection device controls the heating power of the heating device 30 to ensure that the temperature of the filter screen assembly 20 does not exceed the tolerance temperature of the filter screen.

Specifically, the temperature protection device includes an overheating protection member disposed in the air flow passage 11 and connected to the heating device 30 to stop heating of the heating device 30 after the temperature of the overheating protection member exceeds a predetermined temperature; and/or, the temperature protection device comprises a temperature detection component, at least part of which is arranged in the air flow passage 11 to detect the temperature in the air flow passage 11, and controls the heating device 30 to heat or stop heating according to the detection result of the temperature detection component.

Specifically, the plasma sterilization and disinfection device 50 has a plasma generator, and the plasma generated by the plasma generator is rich in a large amount of charged particles, high-energy electrons, positive and negative ions, atoms and molecules in excited and metastable states, and some active chemical particles such as active oxygen and active nitrogen. These active particles and charged particles can rupture the cell wall of bacteria, increase the permeability of cell membrane, cause leakage of contents, damage to DNA and finally achieve sterilization. In addition, the active groups and high-energy electrons of the plasma can open the chemical bonds of the treated gas molecules to decompose the treated gas molecules, so that the aims of removing volatile organic compounds in the air and deodorizing are fulfilled. A large number of electrons in the plasma are combined with the dust particles to form negative-polarity particles, and the dust particles with negative electricity can be captured at the positive plate through the adsorption electric field, so that the air purification effect is achieved.

The air purification device of the invention is provided with an air flow channel 11 for air to pass through, and in order to realize the sterilization function, the air purification device comprises a sterilization module, the sterilization module comprises a filter screen component 20, a heating device 30 and a plasma sterilization and disinfection device 50, the filter screen component 20 is arranged in the air flow channel 11 to filter the air passing through the filter screen component 20; the heating device 30 is disposed in the air flow passage 11, the heating device 30 is disposed adjacent to the filter screen assembly 20 to heat the filter screen assembly 20 by the heating device 30, and the plasma sterilization and disinfection device 50 is disposed upstream of the sterilization module in the air flow direction of the air flow passage 11. Thus, the plasma sterilization and disinfection device 50 primarily filters the air entering the air flow channel 11, the filter screen assembly 20 further filters viruses, bacteria and the like, the viruses, bacteria and the like accumulated on the filter screen are killed under the high-temperature action of the filter screen, and then the effects of sterilization and disinfection are achieved, the air is purified, the propagation of the viruses in the air is blocked, and the problem that the viruses of infectious diseases are high in infectivity and harm is caused to human health is solved.

In the air purification device of the present invention, the plasma sterilization and disinfection device 50 using the CEP (constant Effect plasma) module generates high concentration plasma, the plasma generated by the CEP module is used to kill bacteria and viruses, and a small amount of bacteria and viruses not killed by the CEP module are collected by the HEPA net filter of the second layer, so that the dual-safety mode is adopted to prevent the escape of a small amount of bacteria and viruses.

HEPA mesh has a removal efficiency of 99.97% or more for particles above 1/200 with a hair diameter of 0.3 microns, and is the most effective filter medium for smoke, dust and bacteria. The HEPA network has the characteristics of large wind resistance, large dust holding capacity and high filtering precision, can be processed into various sizes and shapes according to the requirements of customers, and is suitable for different machine types.

The plasma is a macroscopic system consisting of a large number of charged and neutral particles in an unbound state. The plasma sterilization apparatus of the present invention may employ a line-plate discharge structure. When a high enough DC voltage is applied to the high-voltage wire electrode, the electric field around the wire electrode can ionize the surrounding air to generate local corona discharge and high-concentration plasma, so that bacteria and viruses in the air can be efficiently killed. Bacteria and virus remains and particles in the air can be charged with a certain amount of electric charges after passing through the plasma region, and finally can be collected on the dust collecting plate under the action of the electric field force. It should be noted that, in addition to the line-plate discharge structure, the plasma sterilization apparatus of the present invention may also adopt other typical plasma discharge structures such as a dielectric barrier discharge structure, a needle-plate discharge structure, and the like.

According to the invention, by arranging the plasma sterilization device, the HEPAH 13-grade filtration device and the high-temperature heating device, not only can the virus protein and the bacterial cell wall be effectively destroyed by using the plasma sterilization device, but also the trace bacterial viruses which escape from the plasma sterilization module and are not killed by the plasma sterilization device are trapped by the HEPA net filter screen again, and the bacteria or viruses on the HEPA net are killed by using the high-temperature heating device at high temperature for the second time, so that the filtration, the sterilization and the disinfection are realized again, and the trace bacterial viruses are prevented from escaping by adopting the double-insurance mode.

The air purification device fully utilizes the sterilization and disinfection functions of the plasma sterilization device, the filtering function of the HEPAH13 grade filtering device and the 56 ℃ high-temperature disinfection function of the high-temperature heating device, further realizes the organic combination of three means of killing, filtering and eliminating, and mutually promotes the three means of killing, filtering and eliminating.

The new crown epidemic situation which is as unprecedented changes the lives of a plurality of people, and the attention degree of people to the health reaches the unprecedented level, the mask is daily, and the sterilization and virus removal air purification device becomes one of the life-saving straws of a plurality of families. In the case of this danger, the air purification device of the present application should be operated.

In this embodiment, the air cleaning apparatus further includes a primary filter member disposed upstream of the plasma sterilization and disinfection apparatus 50 in the flow direction of the air flow in the air flow path 11.

Referring to fig. 3, it can be seen that the CEP (constant Effect plasma) module has low collection efficiency for particles with a particle size in the range of 0.1-0.5 μm, and to compensate for this, a HEPA net is added downstream of the CEP module to capture small-particle-size particles passing through the CEP module.

Therefore, the CEP module is adopted for sterilization alone, so that trace bacterial viruses can be brought out of the sterilizer by wind speed, and although the bacterial viruses are trace, the risk of transmission also exists. The air purification device solves the problem that trace bacteria and viruses are brought out of the sterilizer by wind speed when the CEP module is independently adopted for sterilization and disinfection.

Moreover, the air purification device solves the problem of wind resistance caused by independently adopting an HEPA network, and if the HEPA network is independently adopted, the wind resistance is large, the noise of the product is high, and the energy consumption is very high; only rely on HEPA net to purify, in the same environment, it is dirty stifled easily to have the filter screen in the same time, and the consumer needs often to change the filter screen, and use cost is also very high.

The air purification device of the invention uses the CEP plasma module firstly, because the CEP has low wind resistance, most of bacteria and viruses can be killed efficiently, and the purification effect of the medium-high efficiency filter screen can be achieved; the HEPA net filter screen component 20 adopted in the second stage is used for purifying ultrafine particles, part of bacteria are attached to the particles, and the HEPA net is used for purifying ultrafine particles, namely, bacteria and viruses are intercepted on the filter screen, so that the harm of the bacteria and viruses which are not killed by CEP to the environment is prevented.

The heating device 30 is arranged at the front end of the HEPA net of the air purification device, so that bacterial viruses on the surface of the filter net can be killed, and the risk that the conventional filter net cannot kill the bacterial viruses and secondary pollution is caused when the filter net is replaced is solved.

The distance of the screen assembly 20 from the heating device 30 is affected by a number of factors including, but not limited to, the operating voltage at which the heating device 30 is energized, the operating environment temperature, the designed filter temperature, the designed minimum air volume. The mutual relationship between every two of the plants is shown as follows:

under the same other system factors, the distance between the filter screen assembly 20 and the heating device 30 is in inverse proportion to the working voltage;

under the condition that other system factors are the same, the distance between the filter screen assembly 20 and the heating device 30 is in a direct proportion relation with the temperature of the working environment;

under the condition that other system factors are the same, the distance between the filter screen assembly 20 and the heating device 30 is in an inverse proportion relation with the designed minimum air volume;

the distance from the screen assembly 20 to the heater 30 is inversely related to the designed filter temperature, all other system factors being equal.

The primary filter element of this embodiment includes a support frame and a screen portion, the screen portion being removably mounted on the support frame.

Referring to fig. 4, it can be seen that when the plasma sterilization and disinfection module of the air purification device is at a working voltage of 18kV, the electrostatic potential on the surface of the filter screen changes at different distances from the high-voltage electrode of the plasma sterilization and disinfection module.

In order to ensure that the plasma sterilization and disinfection module supplements electret charge to the filter screen assembly 20, the maximum effective distance S between the plasma sterilization and disinfection device 50 and the filter screen assembly 20 needs to be ensured, and long-term research shows that the following relation is obtained:

；

wherein S is greater than or equal to 0, and the unit of S is m; u is the operating voltage value for energizing the heating device 30, in kV; u. of₀The initial discharge voltage value of the high-voltage electrode is the unit of kV; v is the flow velocity in the air flow passage 11 and is expressed in m/s. k1 and k2 are respectively the influence coefficients of the loading voltage and the wind speed at the air inlet on the maximum effective distance S, and k3 is a constant term coefficient. u. of₀The value range of (a) is between 2kv and 3kv, the value of k1 is 0.06, the value of k2 is 0.5, and the value of k3 is-0.02.

Corresponding to the above formula, the data in the following table are the results obtained by partial experimental measurement, and the formula is obtained by binary linear fitting of a large amount of experimental data; the high voltage electrode voltage is a working voltage value for energizing the heating device 30.

High voltage electrode voltage (kV)	Wind inlet (m/s)	Maximum effective distance S (m)
			5	0	0.2
5	1.8	1.1
			5	3.6	1.9
10	0	0.35
			10	1.8	1.3
10	3.6	2.2
			18	0	0.9
18	1.8	1.9
			18	3.6	2.6

In the embodiment, in order to make the maximum effective distance S between the plasma sterilization and disinfection device 50 and the filter screen assembly 20 more reasonable, the value range of u is 0 to 20kV, and the value range of v is 0 to 15 m/S. Like this, under the prerequisite of having guaranteed sterilization apparatus' S structure for the biggest effective distance S between plasma sterilization apparatus 50 and the filter screen subassembly 20 satisfies the demand, makes plasma sterilization apparatus 50 provide plasma for filter screen subassembly 20 as much as possible, so that sterilization apparatus reaches better disinfection effect of disinfecting.

Under the combined action of multiple factors, taking the air purification device of a certain embodiment as an example, the temperature of the filter screen and each system factor have the following relationship:

in the present embodiment, the tolerance temperature of the virus is T1, and the tolerance temperature of the filter screen is T2; wherein, the value range of the working temperature T of the filter screen is set as follows: t1< T2. Wherein, the working temperature T of the filter screen is the surface temperature of the filter screen.

In this embodiment, the value range of T1 is: the value range of T2 is as follows: 190-210 ℃. Specifically, T1 ═ 56 ℃, T3 ═ 200 ℃.

In addition, the plasma on the filter screen assembly 20 disappears because the heating device 30 can damage the electret charge by destroying the plasma on the filter screen assembly 20. In the present embodiment, by providing the plasma sterilization and disinfection apparatus 50, the plasma on the filter screen assembly 20 can be supplemented with electret charge, so as to improve the sterilization effect of the filter screen assembly 20.

In the present embodiment, the working temperature of the filter screen assembly 20 is in a direct proportion relation with the heating power of the heating device 30; and/or the working temperature of the filter screen assembly 20 is in a direct proportion relation with the working environment temperature; and/or, the operating temperature of the filter screen assembly 20 is inversely related to the distance from the filter screen to the heating device 30.

Specifically, the working temperature of the filter screen assembly 20 is set to T, the working environment temperature is set to T, the heating power of the heating device 30 is set to P, the distance from the filter screen to the heating device 30 is set to D, and the air volume in the air flow passage 11 is set to L; wherein, (T-0.1009P +0.2365L +3.84D-0.000003P2-0.0051T2-0.000094L2-0.0007D2+0.000319P T +0.000001P L +0.001169P D-0.00038T L-0.0074T D +0.00317L D)/T is less than or equal to 14.55.

Wherein the heating power P ranges from 400W to 4000W; and/or the value range of the environmental temperature t is-10 ℃ to 60 ℃; and/or the value range of the air volume L is 0-900m 3/h; and/or the distance D ranges from 0cm to 60 cm.

The air purification device adopts a CEP plasma module, the heating device 30 and the HEPA three-level structure are the best schemes tested by theory and experiment, and the comparative data is as follows:

specifically, the heating device 30 is disposed adjacent to the filter screen assembly 20; alternatively, the heating device 30 is connected to the filter screen assembly 20; alternatively, the heating device 30 and the filter screen assembly 20 are integrally formed or formed.

In the present application, the arrangement between the filter screen assembly 20 and the heating device 30 may be as follows:

in the first embodiment of the present invention, the heating device 30 is disposed upstream of the filter screen assembly 20 in the flow direction of the air flow in the air flow passage 11.

In a second embodiment of the present invention, as shown in fig. 1, the filter screen assembly 20 and the heating device 30 are both plate-shaped structures; the heating device 30 is disposed downstream of the filter screen assembly 20 in the flow direction of the air flow in the air flow passage 11. At this time, the heat emitted by the heating device 30 can be better transferred to the filter screen assembly 20 under the driving of the airflow, thereby being more beneficial to killing viruses.

In the third embodiment of the present invention, the heating devices 30 are disposed on both sides of the filter screen assembly 20 in the air flow direction of the air flow passage 11. By providing the heating devices both upstream and downstream of the filter screen assembly 20, the filter screen assembly 20 can be heated to a greater extent, and the temperature rise time of the filter screen assembly 20 can be shortened.

In a fourth embodiment of the present invention, as shown in fig. 2, the heating device 30 extends in the circumferential direction of the filter screen assembly 20. Preferably, the heating device 30 is an annular structure, and the heating device 30 is disposed around the filter screen assembly 20.

In the air purifying device of the present embodiment, the heating device 30 is an annular structure, and the filter screen assembly 20 is disposed in a cavity surrounded by the heating device 30.

In the air cleaning apparatus of the present embodiment, the heating apparatus 30 includes a plurality of heating blocks, which are arranged around the filter screen assembly 20.

In the air purifying apparatus of the present embodiment, the sterilization module includes a plurality of filter assemblies 20, and the plurality of filter assemblies 20 are distributed along the airflow flowing direction of the air flow passage 11.

In the air cleaning apparatus of the present embodiment, the filter screen assembly 20 includes a plurality of screen blocks, and the plurality of screen blocks are spliced with each other.

According to the actual situation, the sterilization module comprises a plurality of filter screen assemblies 20, and the plurality of filter screen assemblies 20 are sequentially stacked along the air flowing direction of the air flow passage 11, so as to improve the sterilization effect.

Specifically, the filter screen assembly 20 in the present embodiment is in the specific form: the filter screen assembly 20 and the heating device 30 are both plate-shaped structures; the filter screen assembly 20 is a HEPA filter screen. HEPA (high efficiency particulate air filter), which is a filter screen meeting 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 filter medium for pollutants such as smoke, dust, bacteria and the like. HEPA divides five materials of PP filter paper, glass fiber, compound PPPET filter paper, melt-blown polyester non-woven fabrics and melt-blown glass fiber.

In order to improve the sterilization effect, the sterilization module is provided in plurality, and the sterilization modules are sequentially arranged along the air flow direction of the air flow passage 11. Therefore, the sterilization effect can be submitted, and the sterilization efficiency is ensured.

The main structure of the air purification device in this embodiment is: the air purification device also comprises a shell 10 and a fan 40, wherein the shell 10 is provided with an air inlet 12 and an air outlet 13 which are communicated with the air flow channel 11; the fan 40 is disposed in the air flow passage 11, so that air enters the air flow passage 11 from the air inlet 12 and flows out from the air outlet 13. By arranging the air inlet 12, the air outlet 13 and the fan 40, normal air flow in the air flow passage 11 can be ensured.

In order to ensure the rapid flow of the air, fans 40 are disposed on both sides of the sterilization module along the flow direction of the air flow in the air flow passage 11.

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

in the first embodiment of the present invention, as shown in fig. 1, the air flow path 11 extends in a vertical direction, and the intake vent 12 and the outtake vent 13 are disposed at both ends of the air flow path 11. Preferably, the intake vent 12 is disposed below the outlet vent 13.

In the second embodiment of the present invention, the air flow path 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 path 11.

In the third embodiment of the present invention, the air flow passage 11 is annular, and both the air inlet 12 and the air outlet 13 extend along the circumferential direction of the housing 10 to be disposed around the air flow passage 11. Depending on the actual situation, the air flow channel 11 may also be non-closed loop annular, and the air flow channel 11 extends in the circumferential direction of the housing 10.

The plasma sterilization and disinfection device in the embodiment comprises an ionization assembly, wherein the ionization assembly is connected with a power supply, the ionization assembly comprises conductive wires, the conductive wires are arranged in a crossed mode, a conductive grid is formed on the ionization assembly, current generated by the power supply flows through the conductive grid, so that the ionization assembly is ionized to generate high-concentration plasma, and the plasma can sterilize and disinfect air.

In one embodiment of the ionization component in this embodiment, the conductive filament is formed by a nanofiber bundle, and the nanofiber bundle is formed by mixing and winding two or more soft nanowires, and has good conductivity. The nano fiber bundle forms a porous and reticular flexible fiber net by a weaving method, and the flexible fiber net can be woven into a hexagonal hole reticular structure or a triangular hole or rectangular hole reticular structure. The nanowires may be nanoscale carbon fibers, nanoscale metal wires, or other nanoscale materials.

In another implementation manner of the ionization component in this embodiment, the ionization component uses a flexible circuit board as a substrate, and a processing technology of etching is performed to etch a nanometer-scale conductive material, such as a nanometer-scale metal material, onto the surface of the flexible circuit board, so as to form a nanometer-scale mesh or other-shaped structure, i.e., a nanometer conductive grid. The nano conductive grid formed by etching can be a dendritic forked structure, and can also be a triangular, rectangular or hexagonal grid structure.

In order to improve the filtering effect, the plasma sterilization and disinfection device 50 is provided in plurality, and the plurality of plasma sterilization and disinfection devices 50 are sequentially arranged along the gas flowing direction of the air flow passage 11.

In another implementation of the ionizing assembly in this embodiment, the air purifying apparatus further includes: and a primary filter member disposed upstream of the plasma sterilizing apparatus 50 in a flow direction of the air flow in the air flow path 11.

As shown in fig. 5 and 6, the filter screen assembly 20 includes at least two discharge plates and a filter screen, and a discharge space is formed between two adjacent discharge plates; wherein, each discharge space is provided with at least one filter part to treat bacteria and/or viruses retained on the corresponding filter part when a discharge reaction occurs between two adjacent discharge plates.

The filter screen assembly comprises a plurality of filter parts and a plurality of discharge plates which are sequentially arranged along a first preset direction at intervals, so that discharge spaces are formed by the discharge plates, and at least one filter part is arranged in each discharge space, so that when discharge reaction occurs in each discharge space, bacteria and/or viruses retained on the corresponding filter parts are treated; compared with the prior art, the filter screen assembly adopts a mode of spraying chemicals in the air to kill bacteria and viruses, can treat the bacteria and/or viruses remained on the corresponding filter part without using excessive manpower and material resources, so as to achieve the effects of disinfection, sterilization and air purification; it can be seen that the problem that the mode of handling the bacterium in the air and virus among the prior art can waste great manpower, material resources can be solved to use this filter screen subassembly.

Specifically, each discharge plate forms a discharge electrode to generate a discharge reaction in the corresponding discharge space; applying high-voltage direct current or radio frequency power supply to each discharge plate to generate a high-intensity direct current electric field or radio frequency electric field in the corresponding discharge space, under the action of the high-intensity direct current electric field or radio frequency electric field, electrolyzing air to generate a large amount of high-energy electrons, oxygen atoms, hydroxyl groups, ozone, ultraviolet rays emitted by discharge luminescence and the like, and enabling the high-energy electrons, the oxygen atoms, the hydroxyl groups, the ozone and the ultraviolet rays emitted by the discharge luminescence and the like generated by the electrolysis of the air to jointly act on bacteria or virus microorganisms attached to the corresponding filter net block 27 and bacteria or virus microorganisms in the surrounding air, so that the bacteria or virus microorganisms lose activity and achieve the effect of disinfection and sterilization; therefore, the direct current electric field or the radio frequency electric field can eliminate bacteria or virus microorganisms attached to the corresponding filter part and can also eliminate bacteria and viruses in the surrounding air so as to achieve the effect of purifying the air. In addition, the efficiency of sterilization by the direct current electric field or the radio frequency electric field is high, so that the filter screen assembly 20 has a good sterilization effect.

Specifically, the filter screen assembly 20 further includes a plurality of grounding plates 26, at least one grounding plate 26 is disposed between two adjacent discharge plates, so that the high voltage between two adjacent discharge plates is grounded through the grounding plate 26; discharge spaces are formed between the adjacent discharge plates and the ground plate 26.

In the present embodiment, as shown in fig. 6, the at least two discharge plates include a first discharge plate 21, a second discharge plate 22, and a third discharge plate 23, the first discharge plate 21, the second discharge plate 22, and the third discharge plate 23 are spaced apart in a first preset direction, and the filter screen assembly 20 is disposed between the first discharge plate 21 and the third discharge plate 23.

Alternatively, the first preset direction may be a lateral direction as shown in fig. 5.

Optionally, the number of the second discharge plates 22 is one or more, and a grounding plate 26 is arranged between two adjacent discharge plates; when there is one second discharge plate 22, two discharge spaces are formed between the first discharge plate 21 and the second discharge plate 22, and two discharge spaces are formed between the second discharge plate 22 and the third discharge plate 23; when the second discharge plates 22 are plural, the plural second discharge plates 22 are arranged at intervals along the first preset direction, two discharge spaces are formed between two adjacent second discharge plates 22, two discharge spaces are formed between the first discharge plate 21 and the second discharge plate 22, which is close to the first discharge plate 21, of the plural second discharge plates 22, and two discharge spaces are formed between the second discharge plate 22, which is close to the third discharge plate 23, of the plural second discharge plates 22 and the third discharge plate 23.

Preferably, the height of each discharge plate is smaller than the height of the corresponding ground plate 26. The lower end of each discharge plate is located below the corresponding ground plate 26, and the upper end of each discharge plate is located above the corresponding ground plate 26.

Specifically, the filter part is a filter screen block 27, that is, the filter screen assembly 20 includes a plurality of filter screen blocks 27, and the adjacent discharge plates and the grounding plate 26 are spaced from the filter screen blocks 27 therebetween, so as to avoid the damage caused by the long pressing operation time and the temperature rise of the discharge plates.

Optionally, at least one filter mesh block 27 is disposed between adjacent discharge plates and ground plates 26. Preferably, each filter screen block 27 is a High-density filter screen, i.e., a High efficiency particulate air filter, which can effectively filter out more than 99.7% of impurities with particle sizes of 0.1 micron and 0.3 micron, and is the most effective filtering medium for pollutants such as smoke, dust, bacteria, etc.

Optionally, the minimum spacing between the filter mesh block 27 close to the respective discharge plate and the respective discharge plate is 1cm to 2 cm.

In addition, each filter screen block 27 is a high-density filter screen, so that each filter screen block 27 can effectively increase wind resistance, and further purification efficiency is improved.

In the present embodiment, one grounding plate 26, i.e., a first grounding plate, is disposed between the first discharge plate 21 and the second discharge plate 22; a filter screen block 27 is arranged between the first discharging plate 21 and the first grounding plate, and a filter screen block 27 is arranged between the first grounding plate and the second discharging plate 22.

A grounding plate 26 is arranged between the second discharge plate 22 and the third discharge plate 23, namely a second grounding plate; a filter screen block 27 is arranged between the second discharging plate 22 and the second grounding plate, and a filter screen block 27 is arranged between the second grounding plate and the third discharging plate 23.

Specifically, the filter screen assembly 20 further includes a conductive pillar 28, and the conductive pillar 28 is connected to the plurality of discharge plates, so that the plurality of discharge plates are electrically conductive through the conductive pillar 28; each ground plate 26 is provided with an avoiding hole, and the conductive post 28 is arranged in each avoiding hole in a penetrating manner and is spaced from the hole wall of each avoiding hole, so as to prevent each ground plate 26 from contacting the conductive post 28.

Optionally, the conductive posts 28 are disposed through and in contact with each discharge plate.

Optionally, each relief hole is a circular hole.

During specific installation, the discharge plates and the ground plates are positioned, and then the conductive posts 28 sequentially penetrate through the discharge plates and the ground plates. Or, along the arrangement direction of the plurality of discharge plates, the other discharge plates and the ground plate except for the discharge plate located at the first end are positioned, then the second end of the conductive column sequentially penetrates through the plurality of positioned discharge plates located in the middle from the first ends of the plurality of discharge plates and then is connected with the discharge plates at the second ends of the plurality of discharge plates, and finally the first end of the conductive column 28 is connected with the discharge plate located at the first end.

When the plurality of discharge plates include the first discharge plate 21, the second discharge plate 22 and the third discharge plate 23, the first discharge plate 21, the second discharge plate 22 and the plurality of ground plates are positioned, the conductive posts 28 penetrate through the second discharge plate and the plurality of ground plates and then are connected with the first discharge plate 21, and finally the conductive posts 28 are connected with the third discharge plate 23.

Specifically, the filter screen block 27 includes two filter screen segments 271, and the two filter screen segments 271 are respectively disposed on both sides of the conductive pillar 28.

In this embodiment, one structure of the filter screen block 27 is: as shown in fig. 5, the two filter screen blocks 271 are integrally formed; each filter screen block 27 has a hole of giving way, and the conductive column 28 is inserted in the hole of giving way of each filter screen block 27.

In this embodiment, another structure of the filter screen block 27 is: as shown in fig. 6, the two filter screen partitions 271 are two separate filter screen partitions, and the two filter screen partitions 271 are arranged at intervals.

Specifically, the filter screen assembly further includes a connection piece 29, and the plurality of ground plates 26 are connected to each of the connection pieces 29 to be grounded through the connection piece 29.

Optionally, a tab 29 is located on one side of each ground plate 26.

Specifically, each filter screen block 27 includes a plurality of filter screen sheets, and the plurality of filter screen sheets of each filter screen block 27 are arranged at intervals along the predetermined direction, so as to further improve the filtering effect of each filter screen block 27; wherein the predetermined direction is perpendicular to an arrangement direction of the plurality of discharge plates. In a specific use process, when the gas passes through the plurality of filter screen pieces of each filter screen block 27, each filter screen piece can filter at least part of bacteria or viruses in the gas, and the filtered bacteria or viruses are attached to the corresponding filter screen pieces.

As shown in fig. 7, in the air purification apparatus of the present invention, the air purification apparatus includes a housing 10, a primary filter 62, a filter assembly 20, and a heating device 30, at least part of the primary filter 62, at least part of the filter assembly 20, and at least part of the heating device 30 are disposed in an air flow passage 11, and the filter assembly 20 is disposed downstream of the primary filter 62, so that the air entering the air flow passage 11 passes through the primary filter 62 and the filter assembly 20 in sequence, and the air is sterilized by the primary filter 62 and the filter assembly 20; the heating device 30 is disposed adjacent to the filter screen assembly 20 such that the heating device 30 can heat the filter screen assembly 20.

When the air purification device is in the first purification mode, the heating device 30 is started to be in a working state, namely the heating device 30 heats the filter screen assembly 20, so that the air passing through the primary filter screen 62 is heated when passing through the filter screen assembly 20, and further the viruses carried in the air are effectively killed by heating the air; when air purification device is in the second purification mode, heating device 30 is in non-operating condition, and heating device 30 does not heat filter screen assembly 20 promptly, and the gas through filter screen assembly 20 also can not be heated, and this purification mode mainly is applicable to summer to avoid gas to rise through heating back temperature, and the gas of high temperature gets into indoorly, leads to indoor ambient temperature too high, causes indoor personnel's travelling comfort relatively poor. It is thus clear that can solve the problem that air purification device among the prior art is difficult to kill the virus that carries in the air through using this air purification device.

By arranging the heating device 30 in the embodiment, the filter screen assembly 20 can be heated by the heating device 30, and the temperature of the filter screen assembly 20 can be conveniently heated to more than 56 ℃, so that the coronavirus staying on the filter screen assembly 20 can be heated for 30min, and the coronavirus can be conveniently killed.

Alternatively, when the air purification apparatus is in the first purification mode, the air passing through the filter screen assembly 20 can be heated to 75 ℃. Therefore, the coronavirus can be killed more effectively, and protection during epidemic situations is facilitated.

When air purification device is in first purification mode, because the gas temperature through filter screen subassembly 20 is higher, the gas of high temperature gets into indoorly, can lead to indoor ambient temperature too high, cause indoor personnel's travelling comfort relatively poor, in order to solve this problem, air purification device still includes cooling module 61, at least part of cooling module 61 sets up in air runner 11, along air runner 11's extending direction, cooling module 61 sets up the low reaches at filter screen subassembly 20, in order to cool down the air through filter screen subassembly 20. Like this, cool down the gas through filter screen assembly 20 through cooling module 61, make the gas entering after the cooling indoor again, can also ensure indoor personnel's travelling comfort when guaranteeing gaseous purifying effect.

Specifically, when the air purification apparatus is in the first purification mode or when the temperature of the gas passing through the temperature reduction module 61 is greater than a predetermined temperature, the temperature reduction module 61 is in an operating state; when the air purification apparatus is in the second purification mode and when the temperature of the gas passing through the temperature decreasing module 61 is less than or equal to the predetermined temperature, the temperature decreasing module 61 is in a non-operating state.

In a specific implementation process, the air purification device further comprises a temperature detection component, at least part of the temperature detection component is arranged in the air flow channel 11, and the temperature detection component is arranged at the downstream of the cooling module 61 along the extension direction of the air flow channel 11 so as to detect the temperature of the gas cooled by the cooling module 61; when the temperature detecting component detects that the gas temperature is higher than the preset temperature, the cooling module 61 is started, and when the temperature detecting component detects that the gas temperature is lower than or equal to the preset temperature, the cooling module 61 does not work.

Optionally, the predetermined temperature is 26 ℃, that is, when the temperature detecting component detects that the gas temperature is greater than 26 ℃, the cooling module 61 is activated to cool the gas passing through the filter screen assembly 20, so as to cool the gas temperature to room temperature. When the temperature detection component detects that the gas temperature is less than or equal to 26 ℃, the cooling module 61 stops working.

Specifically, the cooling module 61 and the heating device 30 are disposed at opposite sides of the filter screen assembly 20.

In the present embodiment, the flowing direction of the air in the air flow passage 11 is from bottom to top, and the air purified by the air purifying device is discharged from the upper part of the air purifying device; therefore, the primary filter screen 62 is located at the lower portion of the air flow passage 11, the heating device 30 is located above the primary filter screen 62, the filter screen assembly 20 is located above the primary filter screen 62, and the cooling module 61 is located above the filter screen assembly 20.

Specifically, the air cleaning device has a return air inlet and an air supply outlet, the air supply outlet is disposed at an upper portion of the casing 10, and the return air inlet is disposed at a lower portion of the casing 10.

Specifically, the cooling module 61 is a heat exchanger.

In order to realize the assembly between the cooling module 61 and the housing 10, the cooling module 61 includes a plurality of refrigerant pipes 613 for accommodating refrigerants, a first connecting bracket 611 and a second connecting bracket 612, and the first connecting bracket 611 and the second connecting bracket 612 are disposed at two opposite ends of the plurality of refrigerant pipes 613; the first and second connecting

brackets

611 and 612 are detachably connected to the housing 10.

In the specific implementation process, when it is detected that the temperature of the gas passing through the cooling module 61 is greater than the predetermined temperature, the cooling module 61 is started, i.e., the temperature of the medium in the refrigerant pipe 613 is reduced to form a refrigerant, so that the gas passing through the cooling module 61 with higher temperature exchanges heat with the medium in the refrigerant pipe 613, and the gas passing through the cooling module 61 is cooled by the refrigerant in the refrigerant pipe 613, thereby reducing the temperature of the gas and achieving the purpose of cooling.

A first sliding guide rail and a second sliding guide rail are arranged on the housing 10, the first connecting bracket 611 is in sliding fit with the first sliding guide rail, and the second connecting bracket 612 is in sliding fit with the second sliding guide rail, so that the cooling module 61 can be installed on the housing 10 in a drawing manner; that is, the first connecting bracket 611 can slide along the first sliding rail, and the second connecting bracket 612 can slide along the second sliding rail, so that the temperature reduction module 61 can be drawably mounted on the housing 10 or detached from the housing 10 by sliding the first connecting bracket 611 and the second connecting bracket 612 when the temperature reduction module 61 is mounted or dismounted.

Specifically, the air purification device further includes a fan 40, the fan 40 is disposed in the air flow channel 11, and the fan 40 is disposed on one side of the filter screen assembly 20 away from the primary filter screen 62, so that the air purified by the primary filter screen 62 and the filter screen assembly 20 is discharged under the action of the fan 40.

Preferably, the fan 40 is located downstream of the cooling module 61 along the extending direction of the air flow channel 11, and when the cooling module 61 operates, the cleaned air after cooling is discharged under the action of the fan 40.

In the present embodiment, the fan 40 is located above the cooling module 61; the blower 40 is disposed opposite to the air supply opening so that the purified gas is discharged from the air supply opening by the blower 40.

Specifically, the primary filter screen 62 includes a discharge plate and a ground plate, which form a discharge space therebetween to sterilize air passing through the discharge space.

In the present embodiment, one implementation of the heating device 30 is as follows: the heating device 30 includes a heating plate disposed upstream of the filter screen assembly 20 in a gas flow direction of the air flow passage 11. In this way, heating of screen assembly 20 is facilitated and the coronavirus may be initially heated at the heating plate before flowing to screen assembly 20.

Specifically, the heating plate is located upstream of the filter screen assembly 20.

In the present embodiment, another implementation manner of the heating device 30 is as follows: the heating device 30 is annular, the heating device 30 is arranged around the filter screen assembly 20, and the inner wall surface of the heating device 30 is matched with the outer wall surface of the filter screen assembly 20; that is, the shape of the inner wall surface of the heating device 30 is the same as the shape of the outer wall surface of the filter unit 20, and the area of the inner wall surface of the heating device 30 is smaller than the area of the outer wall surface of the filter unit 20.

As shown in fig. 8 to 15, the heating device 30 includes a heating element 31 and a heat-insulating case 32 having a heat-insulating chamber, the heat-insulating case 32 is used to be mounted on the case 10 of the air cleaner, and the heating element 31 is mounted in the heat-insulating chamber to heat the gas in the heat-insulating chamber; the heat insulation shell 32 is provided with a heat insulation air inlet 3271 and a heat insulation air outlet 13, the heat insulation air inlet 3271 and the heat insulation air outlet 13 are both communicated with the heat insulation cavity, so that air enters the heat insulation cavity from the heat insulation air inlet 3271, the air entering the heat insulation cavity is heated by the heating body 31, the temperature of the air in the heat insulation cavity is increased, the purpose of killing bacteria and viruses carried in the air, particularly coronavirus is further achieved, and the purified air in the heat insulation cavity flows out from the heat insulation air outlet 13; moreover, the heating device 30 can concentrate the air flow in the heat insulation cavity and heat the air in the heat insulation cavity, so that the dispersion phenomenon of the air flow can be effectively reduced, the heat loss of the air flow is further reduced, and the waste of the heat emitted by the heating body 31 is reduced; it can be seen that, when the heating device 30 is used in an air purifier, the problem that the heat emitted by the heating element of the air purifier in the prior art is easy to waste can be solved.

In addition, through set up heating device 30 in air purifier, can concentrate the heat in the thermal-insulated cavity to guarantee to carry out long-time high temperature to exterminateing to the coronavirus in the gas in the thermal-insulated cavity, in order to guarantee to the extermination effect of the coronavirus that carries in the gas.

In the present embodiment, as shown in fig. 2 to 4, the heat generating body 31 includes a mounting end, the heat insulating case 32 includes a first case portion 324 and a second case portion 325, the first case portion 324 is covered on the heat generating body 31, and the first case portion 324 has a bypass opening 3241 for bypassing the mounting end; the second housing portion 325 is disposed over the escape opening 3241 to cover the mounting end.

Optionally, the number of the mounting ends, the avoiding opening 3241 and the second housing portion 325 is multiple, and the avoiding openings 3241 and the mounting ends are arranged in a one-to-one correspondence manner, so that the corresponding mounting end is avoided through each avoiding opening 3241; the plurality of second housing portions 325 are provided in one-to-one correspondence with the plurality of escape openings 3241 to be covered on the respective escape openings 3241 by the respective second housing portions 325.

Preferably, there are two mounting ends, the avoiding opening 3241 and the second housing portion 325, and the two mounting ends are opposite ends of the heating body; the two avoidance openings 3241 correspondingly avoid the two mounting ends one by one; the two second housing portions 325 are covered on the two escape openings 3241 in a one-to-one correspondence, i.e., the two second housing portions 325 are covered on the corresponding mounting ends in a one-to-one correspondence.

Specifically, the heating device 30 further includes a mounting bracket 330, and the mounting bracket 330 is engaged with the mounting end to support the mounting end through the mounting bracket 330.

Alternatively, when there are two mounting ends, the mounting brackets 330 are two, the two mounting brackets 330 are disposed in one-to-one correspondence with the two mounting ends, and each mounting end is supported by the corresponding mounting bracket 330.

Specifically, the heat generating body 31 includes a heat generating tube 311 and a plurality of heat generating fins 312 mounted on the heat generating tube 311, the plurality of heat generating fins 312 being arranged at intervals along the extending direction of the heat generating tube 311.

Alternatively, the number of the heating elements 31 is plural, and the distribution direction of the plural heating elements 31 is perpendicular to the extending direction of the heating tube 311; the mounting ends include respective end portions of the heat generating tubes 311 of the plurality of heat generating bodies 31; i.e., an end portion of the heat generating tube 311, one mounting end of which includes the plurality of heat generating bodies 31, which is located on the same side.

When the number of the mounting terminals is two, the heat generating tube 311 of each heat generating body 31 includes a first end portion and a second end portion, one of the mounting terminals includes the first end portions of the heat generating tubes 311 of the plurality of heat generating bodies 31, and the other of the mounting terminals includes the second end portions of the heat generating tubes of the plurality of heat generating bodies 31.

Alternatively, the airflow flows from the heat-insulating air inlet 3271 to the heat-insulating air outlet 13, and the distribution direction of the plurality of heating elements 31 is perpendicular to the flow direction of the airflow.

In order to realize the assembly between the two mounting frames 330 and the heating tubes 311 of the plurality of heating bodies 31, each mounting frame 330 includes a plurality of insertion holes arranged at intervals, the plurality of insertion holes of each mounting frame 330 are arranged in one-to-one correspondence with the plurality of heating bodies 31, so that the first end portion of the heating tube 311 of each heating body 31 is inserted into a corresponding one of the insertion holes of one mounting frame 330, and the second end portion of the heating tube 311 of each heating body 31 is inserted into a corresponding one of the insertion holes of the other mounting frame 330.

Specifically, when there are two second housing parts 325, each second housing part 325 has a plurality of escape grooves 3251 for escaping from the first end portion or the second end portion of the heat generating tube 311, and the plurality of escape grooves 3251 are provided at intervals; the plurality of escape grooves 3251 of each second housing portion 325 are provided in one-to-one correspondence with the plurality of heat generating elements 31 such that the plurality of escape grooves 3251 of one second housing portion 325 escape the first end portions of the heat generating tubes 311 of the plurality of heat generating elements 31 in one-to-one correspondence, and the plurality of escape grooves 3251 of the other second housing portion 325 escape the second end portions of the heat generating tubes 311 of the plurality of heat generating elements 31 in one-to-one correspondence.

In the present embodiment, as shown in fig. 1 and 2, the heat insulation housing 32 further includes a third housing portion 327, the first housing portion 324 has a mounting opening, and the third housing portion 327 is mounted at the mounting opening; the first housing portion 324, the two second housing portions 325, and the third housing portion 327 enclose an insulated cavity; the heat-insulating air outlet 13 is provided in the first housing portion 324, and the heat-insulating air inlet 3271 is provided in the third housing portion 327.

Optionally, the insulated intake port 3271 and the insulated outlet port 13 are disposed opposite to each other.

Optionally, a plurality of rectangular openings are provided in the third housing portion 327, each forming a thermally insulated intake port 3271.

Optionally, as shown in fig. 1 and 5, an air outlet grille 350 is disposed at the heat insulation air outlet 13.

In the present embodiment, as shown in fig. 4, the heating device 30 further includes an insulation assembly 340, the insulation assembly 340 is disposed in the insulation cavity, the insulation assembly 340 has an insulation passage 342 for allowing the gas to flow through, so that the gas entering the insulation cavity passes through the insulation passage 342, and the insulation assembly 340 provides insulation effect for the gas passing through the insulation passage 342 to reduce heat loss.

Specifically, the heat insulation assembly 340 includes a plurality of heat insulation members 341, the plurality of heat insulation members 341 are sequentially arranged at intervals, and a heat insulation passage 342 is formed between two adjacent heat insulation members 341. The plurality of heat insulators 341 are sequentially spaced along the extending direction of the heat generating tube 311. In this embodiment, the insulation assembly 340 includes two oppositely disposed insulation members 341, and an insulation passage 342 is formed between the two insulation members 341.

Alternatively, two heat insulators 341 are respectively disposed at both mounting ends of the heating body 31, that is, most of the structure of the heating body 31 is disposed in the heat insulation passage 342, so that the heating effect of the heating body 31 on the gas in the heat insulation passage 342 can be ensured.

Specifically, the heat insulating member 341 is a heat insulating plate; preferably, the heat insulation board is heat insulation cotton.

It should be noted that the insulating chamber includes an insulating passage 342, and the gas entering the insulating chamber passes through the insulating passage 342.

Specifically, the third housing portion 327 has a second flange portion 3274, and the third housing portion 327 is connected to the first housing portion 324 by the second flange portion 3274. The third housing portion 327 and the first housing portion 324 are fixed relative to each other by fasteners passing through the second flange portion 3274 and the first housing portion 324.

Specifically, the third housing portion 327 includes a main plate 3272, two second flange portions 3274, and two second flange portions 3274 are respectively disposed on two opposite sides of the main plate 3272. A plurality of rectangular openings are provided on the main plate body 3272.

Specifically, the second housing portion 325 has a U-shaped structure including a body portion 3253 and connecting portions 3254 provided at both ends of the body portion 3253, and the two connecting portions 3254 are connected to the first housing portion 324. The second housing portion 325 and the first housing portion 324 are fixed relative to each other by fasteners inserted through the connecting portions 3254 and the first housing portion 324.

Optionally, the main body portion 3253 and the two connecting portions 3254 are both plate structures; preferably, the body portion 3253 is a strip-shaped plate.

The present invention also provides an air purifier, as shown in fig. 6, the air purifier includes a housing 10 and the above-mentioned heating device 30, the housing 10 has an air flow passage 11, at least a part of the heating device 30 is installed in the air flow passage 11, so that the air entering the air flow passage 11 passes through the heating device 30 and enters the heat insulation cavity of the heating device 30 to be heated to a high temperature by the heating element 31, so as to kill bacteria and viruses, especially coronavirus, carried in the air, and achieve the effect of purifying the air.

Specifically, the housing 10 includes an inner housing 14 and an outer housing 17, the inner housing 14 enclosing an air flow passage 11; the outer shell 17 is located outside the inner shell 14, a heat preservation cavity 18 is formed between the outer shell 17 and the inner shell 14, and the heat preservation cavity 18 is arranged around the heat insulation cavity of the heating device so as to enhance the heat preservation effect of the gas in the air flow channel 11 through the heat preservation cavity 18.

Specifically, the inner housing 14 includes an air inlet frame 15 and an air outlet frame 16, the air inlet frame 15 and the air outlet frame 16 are arranged along the air flowing direction of the air flow passage 11, and the heat generating device is disposed between the air inlet frame 15 and the air outlet frame 16.

In a specific implementation process, the air flow passage 11 includes a first purification passage section and a second purification passage section, the first purification passage section is a passage section of the air flow passage 11 located at the air intake frame 15, that is, the first purification passage section is surrounded by the air intake frame 15; the second purifying channel section is a channel section of the air channel 11 located at the air outlet frame 16, that is, the second purifying channel section is enclosed by the air outlet frame 16.

In the specific implementation process, the gas firstly enters the first purification channel section, then passes through the heating device 30 and is purified in the heat insulation cavity, and the purified gas flows out of the heat insulation cavity, enters the second purification channel section and is discharged after passing through the second purification channel section.

In this embodiment, the air purifier further includes a filter screen disposed in the air flow passage 11, and the heating device 30 is disposed adjacent to the filter screen to transfer heat generated by the heating device 30 to the filter screen; that is, the heating device 30 heats the air in the air flow channel 11, the heat carried by the air can be transferred to the filter screen through the air flow, so as to raise the temperature of the filter screen, and when the air passes through the filter screen, the high-temperature filter screen can kill bacteria and viruses, especially coronavirus, which are retained on the filter screen, so as to improve the sterilization effect of the air.

Optionally, a filter screen is located on the side of the heat insulation air outlet 13 of the heating device 30, so as to filter the gas purified by the heating device 30 through the filter screen.

Specifically, the third housing portion 327 further has a first flange portion 3273, and the third housing portion 327 is connected to the housing 10 by the first flange portion 3273. The heating device 30 is mounted to the housing 10 by fasteners penetrating the first flange portion 3273 and the housing 10.

Alternatively, the first and

second flange portions

3273, 3274 are each of a plate structure, and the first and

second flange portions

3273, 3274 are each perpendicular to the main plate 3272.

In the air purification apparatus of the present embodiment, referring to fig. 1 to 3, the air purification apparatus includes a filter screen assembly 20 and a sterilization device, the filter screen assembly 20 is disposed in the air flow passage 11 to filter the air passing through the filter screen assembly 20; the sterilizing device is arranged in the air flow passage 11, and a medium emitting part of the sterilizing device is arranged towards the filter screen assembly 20 to send a sterilizing medium to the filter screen assembly 20 so as to sterilize the filter screen assembly 20 by the sterilizing medium; when the air purification device comprises the first working mode, the sterilization module is in a working state, and the sterilization device is in a non-working state; when the air purification device is in the second working mode, the sterilization module is in a non-working state, and the sterilization device is in a working state.

In the air cleaning apparatus of the present invention, which has an air flow passage 11 through which air passes, in order to implement a sterilization function, the air cleaning apparatus includes a filter screen assembly 20 and a sterilization apparatus, the filter screen assembly 20 is disposed in the air flow passage 11 to filter the air passing through the filter screen assembly 20; the sterilizing device is disposed in the air flow passage 11, and a medium emitting portion of the sterilizing device is disposed toward the filter screen assembly 20 to send the sterilizing medium to the filter screen assembly 20 to sterilize the filter screen assembly 20 by the sterilizing medium. Thus, viruses, bacteria and the like accumulated on the filter screen assembly 20 are killed under the action of the sterilization medium on the filter screen assembly 20, so that the effects of sterilization and disinfection are achieved, and the air is purified by killing the viruses carried in the air; therefore, the air purification device can solve the problem that the air purification device in the prior art is difficult to kill viruses carried in the air, and solves the problem that the viruses of infectious diseases are high in infectivity and harm to human health by blocking the transmission of the viruses in the air.

Optionally, the sterilization device comprises at least one of the following components:

an ultraviolet lamp, an ultraviolet emitting part of which is disposed toward the filter screen assembly 20 to kill viruses, bacteria, etc. accumulated on the filter screen assembly 20 by ultraviolet rays;

an infrared emitting part of which is disposed toward the filter screen assembly 20 to kill viruses, bacteria, etc. accumulated on the filter screen assembly 20 by infrared rays;

an ozone emitting part of which is disposed toward the filter screen assembly 20 to kill viruses, bacteria, etc. accumulated on the filter screen assembly 20 by ozone;

a microwave generating part of which a microwave emitting part is disposed toward the filter screen assembly 20 to kill viruses, bacteria, etc. accumulated on the filter screen assembly 20 by microwaves.

In the air purifying apparatus of the present embodiment, referring to fig. 16, the air purifying apparatus includes a temperature sensor 80 and a fan 40, a temperature sensing probe of the temperature sensor 80 is located in the air flow passage 11 to detect the temperature in the air flow passage 11; a fan 40 is disposed within the air flow passage 11 to drive air through the air flow passage 11; the fan 40 includes a fan blade 42 and a motor 41 for driving the fan blade 42 to rotate, so as to control the rotation speed of the motor 41 according to the detected temperature of the temperature sensor 80.

In the air purification device of the present invention, the air purification device further includes a temperature sensor 80 and a fan 40, a temperature sensing probe of the temperature sensor 80 is located in the air flow passage 11 to detect the temperature in the air flow passage 11; the fan 40 is arranged in the air flow channel 11 to drive the air to pass through the air flow channel 11, that is, a negative pressure is formed in the air flow channel 11 under the action of the fan 40, so that the air around the air purification device enters the air flow channel 11 under the action of the negative pressure; the fan 40 comprises a fan blade 42 and a motor 41 for driving the fan blade 42 to rotate, and the rotating speed of the motor 41 is controlled according to the detection temperature of the temperature sensor 80, so that the rotating speed of the fan blade 42 is controlled; it can be seen that this air purification device of use can effectively kill germ, bacterium etc. that carry in the gas, and it can solve the problem that air purifier among the prior art is difficult to effectively kill the virus.

The method of controlling the temperature in the air flow channel 11 is described in detail below:

the air purification device of the present invention obtains the temperature in the air flow passage 11 through the temperature sensor 80, and controls the operation state of the temperature control member according to the obtained temperature, so that the temperature in the air flow passage 11 is maintained within a preset normal range. The temperature control part comprises a partition temperature control system, the partition temperature control system corresponds to the filter screen partitions one to one, the temperature inside the purifier is accurately controlled through the partition temperature control system, the problem that the local areas of the filter screen are overheated to damage and the potential safety hazard caused by overheating of a heating body is eliminated is avoided, meanwhile, the partition temperature control system can also guarantee that the air temperature in each area of the filter screen is consistent, and the user experience degree is improved.

As an optional implementation manner of the embodiment of the invention, the temperature inside the purifier is obtained through a temperature sensing device; preferably, the temperature sensing device is a bulb. Specifically, the temperature of the air in each filter screen partition is obtained through a temperature sensing bulb arranged in each filter screen partition in the purifier.

Controlling the temperature control component according to the temperature so that the temperature is in a preset normal temperature range; the temperature control part comprises: a zonal temperature control system; the device comprises a purifier, a plurality of subarea temperature control systems, a plurality of air heating units and a plurality of temperature control units.

It should be noted that the lower limit value of the preset normal temperature range is 56 ℃ and the upper limit value is 95 ℃. It is understood that the normal temperature range can be preset according to actual needs.

As a further illustration of the above method embodiment, the temperature control means comprises: a fan 40; controlling the temperature control component according to the temperature, comprising: the rotation speed of the fan 40 is adjusted according to the temperature.

Specifically, if the temperature is less than the preset target temperature, the rotation speed of the fan 40 is reduced;

if the temperature is higher than the preset target temperature, increasing the rotating speed of the fan 40;

if the temperature is equal to the preset target temperature, the rotation speed of the fan 40 is kept unchanged.

Referring to fig. 16, in the present embodiment, the filter screen is damaged due to an excessively high temperature of the filter screen or an excessively high temperature of a local area of the filter screen, for this reason, the overheating protection component is the temperature limiter 90, the heating device 30 is an electric heating device, the temperature limiter 90 is disposed on a charging circuit of the electric heating device, and when the temperature of the temperature limiter 90 exceeds a predetermined temperature, the temperature limiter 90 itself breaks, so that the charging circuit is disconnected, and the heating device 30 is in a closed state.

According to the actual situation, the air purification device further comprises a temperature detection component, at least part of which is arranged in the air flow channel 11 to detect the temperature in the air flow channel 11; the temperature detection component and the heating device 30 are both connected with the control module of the air purification device, so that the control module obtains the detection result of the temperature detection component and turns on or off the heating device 30 according to the detection result. If the temperature in the air flow passage 11 reaches the preset temperature, the heating device 30 is turned off, so as to protect the heating device 30 from overheating and increase the safety of the heating device 30.

More specifically, at least a portion of the temperature limiter 90 or temperature sensing component is disposed within the cradle cavity.

Specifically, the temperature limiter 90 is provided on the energization line of the heating device 30 to cut off the energization line of the heating device 30 after the temperature limiter 90 detects that the temperature in the air flow passage 11 reaches a preset temperature, so that the heating device 30 will stop generating heat.

As shown in fig. 17 and 18, in the sterilization module of the present invention including the filter screen assembly 20, the heat transfer part 70, and the heating device 30, the heat transfer part 70 is located between the heating device 30 and the filter screen assembly 20 such that heat of the heating device 30 is transferred to the filter screen assembly 20 through the heat transfer part 70. Specifically, the heating device 30 is disposed along the circumferential direction of the heat transfer member 70 so that the heating device 30 can uniformly heat the heat transfer member 70; the filter screen assembly 20 is arranged in the air flow passage 11 enclosed by the heat transfer component 70, that is, the heat transfer component 70 is arranged along the circumferential direction of the filter screen assembly 20, so that the heat on the heat transfer component 70 can be uniformly transferred to the filter screen assembly 20, and the filter screen assembly 20 is uniformly heated; therefore, the sterilization module can solve the problem that the sterilization module in the prior art is difficult to uniformly heat the filter screen. The temperature of the heated filter screen assembly 20 rises, and bacteria and germs attached to the filter screen assembly 20 can be killed, so that the purposes of disinfection and sterilization are achieved.

It should be noted that, by uniformly heating the filter screen assembly 20, the generated heat energy is fully utilized, and the waste of heat energy is reduced; moreover, the filter screen assembly 20 is uniformly heated, so that the temperature of the filter screen assembly 20 is uniformly distributed, the disinfection and sterilization effects of the filter screen assembly 20 can be enhanced, the sterilization efficiency of the sterilization module is improved, and the service life of the filter screen assembly 20 can be prolonged. In addition, the sterilization module is simple in structure and convenient to process.

Specifically, the filter screen assembly 20 is plate-shaped, the air flow passage 11 is a columnar structure, and a center line of the filter screen assembly 20 along the air flow direction of the air flow passage 11 coincides with a center line of the air flow passage 11.

Optionally, screen assembly 20 is a high efficiency screen.

Optionally, there are a plurality of filter screen assemblies 20, and the plurality of filter screen assemblies 20 are stacked in the air flow direction of the air flow channel 11 to ensure the filtering and purifying effects on the air in the air flow channel 11.

In the present embodiment, one specific structure of the heat transfer member 70 is: the heat transfer member 70 has a tubular structure, and the lumen of the tubular structure is the air flow passage 11. Preferably, the heat transfer member 70 is a metal pipe to ensure a heat transfer effect of the heat transfer member 70.

In the present embodiment, another specific structure of the heat transfer member 70 is: the heat transfer member 70 includes a plurality of heat transfer fins each of which is an arc-shaped plate, which are sequentially arranged in a predetermined circumferential direction to enclose the air flow passage 11.

Optionally, according to actual requirements, on the basis of ensuring that the filter screen assembly 20 can be uniformly heated, the plurality of heat transfer fins are sequentially arranged at intervals or sequentially and continuously arranged along the predetermined circumferential direction, so as to ensure that the filter screen assembly 20 is sufficiently heated.

Preferably, the plurality of heat transfer sheets are all metal sheets to ensure the heat transfer effect of the heat transfer member 70.

In the present embodiment, a specific structure of the heating device 30 is: the heating device 30 includes a heating wire wound on the outside of the heat transfer member 70.

Alternatively, the heating wire is wound in a spiral shape on the outside of the heat transfer member 70 to uniformly heat the heat transfer member 70.

Optionally, the heater wire is a copper wire. Specifically, the heating device 30 is an eddy current copper coil.

In this embodiment, another specific structure of the heating device 30 is: the heating device 30 includes a tubular metal sheet that is fitted over the heat transfer member 70. Optionally, the tubular metal sheet is in abutting contact with the heat transfer member 70.

In the present embodiment, another specific structure of the heating device 30 is: the heating device 30 includes a plurality of arc-shaped metal sheets which are disposed around the heat transfer member 70.

Alternatively, a plurality of arc-shaped metal sheets are sequentially arranged in the circumferential direction of the heat transfer member 70. Specifically, on the basis of ensuring uniform heating of the heat transfer member 70, the plurality of arc-shaped metal sheets are sequentially arranged at intervals or sequentially arranged in series along the circumferential direction of the heat transfer member 70, so that the heat transfer member 70 is uniformly heated.

Optionally, each of the arcuate metal sheets is in abutting contact with the heat transfer member 70.

In order to further ensure the uniform heating effect on the filter screen assembly 20, the inner wall surface of the air flow passage 11 is a cylindrical surface, and the filter screen assembly 20 comprises a plurality of circumferential side walls; the maximum distances between the plurality of circumferential side walls and the inner wall surface of the air flow passage 11 are equal in the radial direction of the air flow passage 11. Optionally, screen assembly 20 is of a rectangular configuration.

In order to detect the temperature of the filter screen assembly 20, the sterilization module further includes a temperature sensing part 72, and a temperature sensing probe of the temperature sensing part 72 is disposed toward the filter screen assembly 20 to detect the temperature of the filter screen assembly 20.

Alternatively, the temperature sensing member 72 is a bulb.

Specifically, the sterilization module further includes a power supply part 71, and the power supply part 71 is electrically connected to the heating device 30 to generate heat by energizing the heating device 30.

Alternatively, the power supply part 71 is a high frequency generation power source or a direct current high voltage power source so that the heating apparatus 30 can rapidly generate heat.

The invention also provides an air purifier, which comprises an air duct 74 and the sterilization module, wherein the sterilization module is arranged in the air duct 74, so that the gas passing through the air duct 74 passes through the sterilization module, and the gas passing through the sterilization module is further sterilized and disinfected.

Specifically, the air flow channel 11 of the sterilization module is communicated with the air channel 74, so that the air in the air channel 74 passes through the air flow channel 11, and when the air passes through the air flow channel 11, the air in the air flow channel 11 can be filtered by the filter screen assembly 20, so as to filter bacteria and germs carried in the air; under the action of the heating device 30 and the heat transfer part 70, the filter screen assembly 20 is uniformly heated to kill bacteria and germs remained on the filter screen assembly 20; in addition, the temperature in the air flow passage 11 is high under the action of the heating device 30 and the heat transfer member 70, so that bacteria and germs in the gas passing through the air flow passage 11 can be killed to a certain extent, thereby realizing the purification and disinfection effects on the gas passing through the sterilization module.

In particular, the heating device 30 and the heat transfer member 70 maintain the temperature in the filter assembly 20 and the air flow passage 11 at 56 ℃ or higher, so that the coronavirus staying on the high efficiency filter assembly 20 can be heated for 30min or more, thereby effectively killing the coronavirus.

Specifically, the air purification apparatus further includes a housing 10, and the housing 10 encloses an air duct 74. Optionally, the housing is a cuboid structure.

The invention also provides a disinfection and sterilization method, which is suitable for the sterilization module and comprises the following steps: step S10, detecting the temperature of the filter screen component of the sterilization module; in step S20, the heating device of the sterilization module is turned off after the temperature of the filter screen assembly is maintained at 56 ℃ to 200 ℃ for a first predetermined time.

The disinfection and sterilization method also comprises the following steps: in step S30, after the heating member is in the off state for the second predetermined time, step S10 is performed again.

Specifically, the first predetermined time is 1 hour, and the second predetermined time is 5 hours to 8 hours.

Specifically, the temperature sensing component 60 further includes a feedback module 73, and the feedback module 73 is configured to feed back the temperature of the filter screen assembly 20 detected by the temperature sensing probe of the temperature sensing component 60, and control the operation state of the sterilization module according to the temperature information fed back by the feedback module 73. Namely, after the temperature of the fed-back filter screen assembly 20 is maintained at 50 ℃ to 200 ℃ and continues for the first preset time, the heating device 30 of the sterilization module is turned off; when the heating device 30 is in the off state and continues to the second preset time, the temperature of the filter screen assembly 20 is detected again, the feedback module 73 feeds back temperature information, and when the temperature of the fed back filter screen assembly 20 is less than 50 ℃, the heating device 30 is started, so that automatic adjustment is realized, and further, the energy-saving maximization is realized while the sterilization effect is ensured.

Specifically, the feedback module 73 is electrically connected with the power supply part 50 to control the power-on/off state of the power supply part 50 according to the temperature information fed back by the feedback module 73; after the temperature of the fed-back filter screen assembly 20 is maintained at 50 ℃ to 200 ℃ and continues to reach the first preset time, the power supply part 50 and the heating device 30 are in a power-off state, so as to turn off the heating device 30; when the temperature of the fed-back filter screen assembly 20 is less than 50 ℃, the power supply part 50 and the heating device 30 are in a power-on state, so as to start the heating device 30.

Specifically, the feedback module 73 includes a constant temperature sub-module to feed back whether the temperature of the filter screen assembly 20 is maintained at 50 ℃ to 200 ℃ for a first predetermined time by the constant temperature sub-module; when the temperature of the filter screen assembly 20 does not reach 50 ℃ to 200 ℃, and/or the temperature of the filter screen assembly 20 cannot last for the first predetermined time, the thermostatic submodule fails.

Specifically, the sterilization module further comprises a display screen electrically connected to the feedback module 73 for displaying temperature information, and/or time information of temperature duration, and/or fault codes; the fault code is code information when the constant-temperature submodule has faults.

The invention also provides an air purifier, which comprises the air purifying device.

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

the air cleaning device of the present invention has an air flow passage 11 through which air passes, and includes: a sterilization module, the sterilization module comprising: a filter screen assembly 20, the filter screen assembly 20 being disposed in the air flow passage 11 to filter air passing through the filter screen assembly 20; a heating device 30, wherein the heating device 30 is arranged in the air flow passage 11, so that the filter screen assembly 20 is heated by the heating device 30; the plasma sterilization and disinfection device 50 is arranged at the upstream of the sterilization module along the airflow flowing direction of the air flow channel 11, so as to sterilize and disinfect the air entering the air flow channel 11; and a temperature limiter 90, at least a portion of the temperature limiter 90 being disposed in the air flow passage 11 to detect the temperature in the air flow passage 11, and controlling the heating device 30 to be turned on or off according to the detection result of the temperature limiter 90. Therefore, viruses, bacteria and the like accumulated on the filter screen are killed under the high-temperature action of the filter screen, the sterilization and disinfection effects are further achieved, the air is purified, the propagation of the viruses in the air is blocked, and the problem that the viruses of infectious diseases are high in infectivity and harm is caused to human health is solved.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may also be oriented 90 degrees or at other orientations and the spatially relative descriptors used herein interpreted accordingly.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An air cleaning device having an air flow passage (11) through which air passes, characterized by comprising:

a sterilization module, the sterilization module comprising:

a screen assembly (20), the screen assembly (20) being disposed within the air flow passage (11) to filter air passing through the screen assembly (20);

a heating device (30), the heating device (30) being arranged in the air flow channel (11) to heat the filter screen assembly (20) by the heating device (30);

the plasma sterilization and disinfection device (50) is arranged at the upstream of the sterilization module along the airflow flowing direction of the air flow channel (11) so as to sterilize and disinfect the air entering the air flow channel (11);

the temperature protection device is at least partially arranged in the air flow channel (11), and the temperature protection device enables the temperature of a filter screen of the filter screen assembly (30) not to exceed the tolerance temperature of the filter screen by controlling the heating power of the heating device (30).

2. The air purification apparatus according to claim 1,

the temperature protection device comprises an overheating protection component which is arranged in the air flow channel (11) and is connected with the heating device (30) so as to stop heating of the heating device (30) after the temperature of the overheating protection component exceeds a preset temperature; and/or the presence of a gas in the gas,

the temperature protection device comprises a temperature detection component, wherein at least part of the temperature detection component is arranged in the air flow channel (11) to detect the temperature in the air flow channel (11), and the heating device (30) is controlled to heat or stop heating according to the detection result of the temperature detection component.

3. Air cleaning device according to claim 1, characterized in that the heating device (30) is arranged upstream of the filter screen assembly (20) in the flow direction of the air flow in the air flow channel (11).

4. The air purification apparatus according to claim 1, wherein the heating device (30) is an annular structure, and the filter screen assembly (20) is disposed in a cavity surrounded by the heating device (30).

5. The air cleaning device according to claim 1, wherein the sterilization module comprises a plurality of filter screen assemblies (20), the plurality of filter screen assemblies (20) being distributed along the air flow direction of the air flow channel (11).

6. Air cleaning device according to claim 1, characterized in that the filter screen assembly (20) and the heating device (30) are both plate-like structures; and/or the screen assembly (20) comprises a HEPA screen.

7. The air purification apparatus according to claim 1, further comprising:

a housing (10), the housing (10) having an air inlet (12) and an air outlet (13) in communication with the air flow passage (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 out from the air outlet (13).

8. The air cleaning device according to claim 7,

the air flow channel (11) extends along the vertical direction, and the air inlet (12) and the air outlet (13) are arranged at two ends of the air flow channel (11); or

The air flow channel (11) extends along the horizontal direction, and the air inlet (12) and the air outlet (13) are arranged at two ends of the air flow channel (11); or

The air flow channel (11) is annular, and the air inlet (12) and the air outlet (13) both extend along the circumferential direction of the shell (10) to be arranged around the air flow channel (11).

9. The air purification apparatus according to claim 1, further comprising:

and the primary filter screen (62) is arranged at the upstream of the plasma sterilization and disinfection device (50) along the airflow flowing direction in the air flow channel (11).

10. The air purification apparatus of claim 9, wherein the primary filter screen (62) comprises a support frame and a filter screen portion, the filter screen portion being detachably mounted on the support frame.

11. The air purification apparatus according to any one of claims 1 to 10, wherein the maximum effective distance S between the plasma sterilization and disinfection apparatus (50) and the filter screen of the filter screen assembly (20) is:

；

wherein S is greater than or equal to 0, the unit of S is m, and u is the loading voltage value of the high-voltage electrode of the plasma sterilization and disinfection device (50), and the unit of U is kV; u. of₀The initial discharge voltage value of the high-voltage electrode is the unit of kV; v is the wind speed at the air inlet communicated with the air flow channel (11), and the unit is m/s; k1 and k2 are respectively the influence coefficients of the loading voltage and the wind speed at the air inlet on the maximum effective distance S, and k3 is a constant term coefficient.

12. Air cleaning device according to claim 11, characterized in that u is₀The value range of (a) is between 2kv and 3kv, the value of k1 is 0.06, the value of k2 is 0.5, and the value of k3 is-0.22.

13. The air purification apparatus according to claim 1, wherein the virus tolerance temperature is T1, and the tolerance temperature of the filter screen assembly (20) is T2; wherein, the value range of the working temperature T of the filter screen is set as follows: t1< T2.

14. The air cleaning device according to claim 1, wherein the operating temperature of the filter screen assembly (20) is in direct proportion to the heating power of the heating device (30); and/or the working temperature of the filter screen component (20) is in a direct proportion relation with the working environment temperature; and/or the working temperature of the filter screen assembly (20) is in inverse proportion to the distance from the filter screen to the heating device (30).

15. The air cleaning device according to claim 13, wherein the working environment temperature is t, the heating power of the heating device (30) is P, the distance from the filter screen to the heating device (30) is D, and the air volume in the air flow channel (11) is L; wherein the content of the first and second substances,

(T-0.1009P+0.2365L+3.84D-0.000003P2-0.0051t2-0.000094L2-0.0007D2+0.000319P*t+0.000001P*L+0.001169P*D-0.00038t*L-0.0074t*D+0.00317L*D)/t≤14.55；

wherein the value range of the heating power P is 400W to 4000W; and/or

The value range of the environmental temperature t is-10 ℃ to 60 ℃; and/or

The value range of the air volume L is 0-900m 3/h; and/or

The distance D ranges from 0cm to 60 cm.

16. Air cleaning device according to claim 1, characterized in that the filter screen assembly (20) comprises:

the filter comprises at least two discharge plates and filter parts, discharge spaces are formed between every two adjacent discharge plates, and at least one filter part is arranged in each discharge space so as to treat bacteria and/or viruses retained on the corresponding filter part when discharge reaction occurs between every two adjacent discharge plates.

17. The air purification apparatus of claim 16, wherein the at least two discharge plates comprise:

the filter plate comprises a first discharge plate (21), a second discharge plate (22) and a third discharge plate (23), wherein the first discharge plate (21), the second discharge plate (22) and the third discharge plate (23) are arranged at intervals along a first preset direction, and a plurality of filter parts are arranged between the first discharge plate (21) and the third discharge plate (23);

wherein the number of the second discharge plates (22) is one; or the number of the second discharge plates (22) is multiple, and the second discharge plates (22) are arranged at intervals along the first preset direction.

18. Air cleaning device according to claim 1, characterized in that it comprises a first cleaning mode and a second cleaning mode, when it is in said first cleaning mode, said heating means (30) being in operation; when the air purification device is in the second purification mode, the heating device (30) is in a non-operating state.

19. The air purification apparatus according to claim 18, further comprising:

the cooling module (61), at least part setting of cooling module (61) is in air runner (11), along the extending direction of air runner (11), cooling module (61) sets up the low reaches of sterilization module to the air that passes through sterilization module cools down.

20. Air cleaning device according to claim 19, characterized in that the cooling module (61) is in operation when the air cleaning device is in the first cleaning mode or when the temperature of the gas passing through the cooling module (61) is greater than a predetermined temperature; when the air purification device is in the second purification mode and when the temperature of the gas passing through the cooling module (61) is less than or equal to a predetermined temperature, the cooling module (61) is in a non-working state.

21. The air cleaning device according to claim 19, wherein the cooling module (61) includes a plurality of refrigerant pipes (613) for containing the refrigerant, a first connecting bracket (611) and a second connecting bracket (612), the first connecting bracket (611) and the second connecting bracket (612) being disposed at opposite ends of the plurality of refrigerant pipes (613); the first and second connection brackets (611, 612) are detachably connected to a housing (10).

22. The air purification apparatus according to claim 1, wherein the heating device (30) comprises a heat generating body (31) and a heat insulating case (32), the heat insulating case (32) has a heat insulating cavity, the heat generating body (31) is mounted in the heat insulating cavity, and the heat insulating case (32) is used for being mounted on the case (10) of the air purification apparatus; the heat insulation shell (32) is provided with a heat insulation air inlet and a heat insulation air outlet, and the heat insulation air inlet and the heat insulation air outlet are communicated with the heat insulation cavity, so that gas enters the heat insulation cavity from the heat insulation air inlet and flows out from the heat insulation air outlet.

23. The air cleaning device according to claim 22, wherein the heat generating body (31) includes a mounting end, and the heat insulating case (32) includes:

a first housing section (324), wherein the first housing section (324) is provided so as to cover the heating element (31), and the first housing section (324) has a bypass opening (3241) for bypassing the attachment end;

a second housing portion (325), the second housing portion (325) being provided on the escape opening (3241) so as to cover the mounting end.

24. The air purification apparatus according to claim 23, wherein the heating device (30) further comprises:

a mounting bracket (330), the mounting bracket (330) cooperating with the mounting end to support the mounting end through the mounting bracket.

25. The air cleaning device according to claim 24, wherein the heat generating body (31) includes a heat generating tube (311) and a plurality of heat generating fins (312) mounted on the heat generating tube (311), the plurality of heat generating fins (312) being arranged at intervals along an extending direction of the heat generating tube (311);

wherein, the number of the heating bodies (31) is multiple, and the distribution direction of the heating bodies (31) is vertical to the extension direction of the heating tube (311); the mounting end includes respective end portions of the heating tubes (311) of the plurality of heating bodies (31).

26. The air purification apparatus according to claim 1, further comprising:

a sterilizing device disposed in the air flow passage (11), a medium emitting part of the sterilizing device being disposed toward the filter screen assembly (20) to send a sterilizing medium to the filter screen assembly (20) to sterilize the filter screen assembly (20) by the sterilizing medium;

when the air purification device comprises the first working mode, the sterilization module is in a working state, and the sterilization device is in a non-working state; when the air purification device is in the second working mode, the sterilization module is in a non-working state, and the sterilization device is in a working state.

27. The air purification apparatus according to claim 1, further comprising:

the temperature sensor (80), the temperature sensing probe of the temperature sensor (80) is positioned in the air flow channel (11) to detect the temperature in the air flow channel (11);

a fan (40), the fan (40) being disposed within the air flow channel (11) to drive gas through the air flow channel (11); the fan (40) comprises fan blades (42) and a motor (41) for driving the fan blades (42) to rotate, and the rotating speed of the motor (41) is controlled according to the detected temperature of the temperature sensor (80).

28. An air purification method, applicable to the air purification apparatus of any one of claims 1 to 27, comprising:

step S10, detecting the temperature of the filter screen component (20) of the sterilization module;

and step S20, turning off the heating device (30) of the sterilization module after the temperature of the filter screen assembly is maintained at 56-200 ℃ for the first preset time.

29. The air purification method according to claim 28, further comprising:

step S30, after the heating device (30) is in the off state for the second predetermined time, step S10 is executed again.

30. An air cleaner comprising an air cleaning device, wherein the air cleaning device is the air cleaning device of any one of claims 1 to 29.