CN212679692U

CN212679692U - Air sterilizing machine

Info

Publication number: CN212679692U
Application number: CN202021716762.9U
Authority: CN
Inventors: 马云; 禹龙飞
Original assignee: Sinaeco Environmental Engineering Beijing Co ltd
Current assignee: Sinaeco Environmental Engineering Beijing Co ltd
Priority date: 2020-08-17
Filing date: 2020-08-17
Publication date: 2021-03-12
Anticipated expiration: 2030-08-17

Abstract

The utility model discloses an air sterilizer, which comprises a spraying sterilization module, a nanometer photocatalyst sterilization module, a high-efficiency filtering module and an active carbon adsorption module; the spraying sterilization module sterilizes air by spraying sterilization liquid, the nano photocatalyst sterilization module sterilizes air by irradiating nano photocatalyst through ultraviolet rays, the high-efficiency filtering module can filter particles with the diameter larger than or equal to 0.3 mu m in the air, and the active carbon adsorption module can adsorb residual harmful substances in the air. The air sterilizing machine ensures that viruses and bacteria existing in the form of aerosol in the air can be effectively and completely sterilized through the combination of the spraying sterilizing module, the nano photocatalyst sterilizing module, the high-efficiency filtering module and the activated carbon adsorption module.

Description

Air sterilizing machine

Technical Field

The utility model relates to an air disinfection and sterilization technical field especially relates to an air sterilizer.

Background

Air is required to be disinfected and sterilized in virus laboratories, aerosol closed spaces containing harmful substances, influenza season fever clinics, personnel gathering places and the like.

At present, the following modes are mainly adopted to kill the air:

(1) isothermal plasma sterilization, namely, ionizing air by adopting voltage and decomposing harmful substances or germs in the air by using electric energy. The air ionization effect can be achieved only under the conditions of high voltage and high energy consumption, so that the operation energy consumption is high, and the equipment cost is higher.

(2) And (3) filtering, namely filtering and removing dust above 3um in the air and harmful germs adhered to the particles by adopting filter cotton. This mode of killing has no effect on harmful substances in the air with a size less than 3 um.

(3) Heating, namely heating the air to more than 54 ℃. Since harmful substances generally need to be retained for more than 30 minutes at high temperature to be effectively killed, the killing mode has high energy consumption and low killing efficiency.

(4) The silver metal catalyst is used for killing, namely, the catalytic capability of the silver metal is utilized to decompose harmful substances at normal temperature. The killing effect of the killing mode is not ideal.

From the above analysis, it can be seen that, at present, the mainstream air disinfection mode cannot achieve a better air disinfection effect and a higher air disinfection efficiency with lower energy consumption, and in view of this, how to achieve a better air disinfection effect and a higher air disinfection efficiency with lower energy consumption is a technical problem that needs to be solved by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an air sterilizer, which comprises a spraying sterilizer module and a nano photocatalyst sterilizer module; the spraying sterilization module comprises a spraying layer, a packing layer and a liquid supply assembly, wherein the spraying layer is used for spraying sterilization liquid to the packing layer, and the liquid supply assembly is used for supplying the sterilization liquid to the spraying layer; the nano photocatalyst sterilizing module comprises nano photocatalyst and an ultraviolet lamp for irradiating the nano photocatalyst; the nano photocatalyst sterilizing module is arranged at the downstream of the spraying sterilizing module, so that air flows through the spraying sterilizing module first and then flows through the nano photocatalyst sterilizing module.

Optionally, the disinfectant is a neutral chlorine dioxide solution, a peroxyacetic acid solution, or a formalin solution.

Optionally, the distance between the spraying layer and the filler layer ranges from 0.5m to 1m, and the height of the filler layer ranges from 0.4m to 0.7 m.

Optionally, the packing of the packing layer adopts a structure capable of increasing the gas-liquid ratio, such as a Taylor flower ring or a Bohr ring.

Optionally, the ultraviolet light has a wavelength in the range of 240nm to 280 nm.

Optionally, the air sterilizer further comprises a high-efficiency filtering module, and the high-efficiency filtering module can filter out particulate matters with the diameter being more than or equal to 0.3 μm in the air.

Optionally, the high efficiency filtration module is disposed between the spray disinfection module and the nano-photocatalyst disinfection module.

Optionally, the air sterilizer further comprises an activated carbon adsorption module disposed downstream of the nano-photocatalyst sterilizing module.

Optionally, the air sterilizer further comprises an induced draft fan and a controller communicatively connected to the induced draft fan, the controller configured to: and in the killing process, the rotating speed of the induced draft fan is controlled, so that air flows through the activated carbon adsorption module at a speed of less than or equal to 0.6m/s and flows through the spraying killing module at a speed of less than or equal to 1 m/s.

Optionally, the air sterilizer further comprises a dehumidification module, and the dehumidification module is arranged between the nano photocatalyst sterilization module and the spray sterilization module.

The air sterilizing machine provided by the scheme utilizes the combination of the spraying sterilizing module 2 and the nano photocatalyst sterilizing module 3, and achieves the purposes of achieving a better air sterilizing effect and higher air sterilizing efficiency with lower energy consumption.

In an alternative scheme, the high-efficiency filtering module 4 and the activated carbon adsorption module 5 are further arranged and combined with the spraying sterilizing module 2 and the nano photocatalyst sterilizing module 3, so that viruses and bacteria in the form of aerosol in the air can be effectively and completely sterilized.

In another alternative, a dehumidifying module 6 is further arranged between the spraying sterilizing module 2 and the nano photocatalyst sterilizing module 3, so that the humidity of air flowing through the nano photocatalyst sterilizing module 3 is lower, the risk of blockage of micropores of the nano photocatalyst sterilizing module 3 is reduced, and the sterilizing effect and the operation stability of the equipment are further improved.

Drawings

Fig. 1 is a schematic view of an embodiment of an air sterilizer provided by the present invention;

fig. 2 is a schematic view of fig. 1 from another perspective.

The reference numerals are explained below:

1, a shell;

2, a spraying and killing module, a 21 circulating pump, a 22 spraying layer and a 23 packing layer;

3 nanometer photocatalyst sterilizing module, 31 ultraviolet lamp and 32 nanometer photocatalyst;

4, a high-efficiency filtering module;

5, an active carbon adsorption module;

6 dehumidification module

7. a draught fan.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the following provides a detailed description of the technical solution of the present invention with reference to the accompanying drawings.

It should be noted that in the description of the present invention, the directions indicated as "upper" and "lower" are only used with respect to the view point of the attached drawings, and are intended to facilitate the description of the present invention and to simplify the description, but not to indicate or imply that the system or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be construed as limiting the present invention

As shown in the figure, the air sterilizer includes a housing 1, an induced draft fan 7, a controller, and a plurality of functional modules. The controller is connected with the induced draft fan 7 in a communication mode, and therefore the rotating speed of the induced draft fan 7 can be controlled.

The shell 1 is provided with an air inlet and an air outlet, and the shell 1 can be also provided with a control panel for the operation of a user.

The draught fan 7 can be arranged in the shell 1 and also can be arranged on the wall of the shell 1, in the drawing, the draught fan 7 is arranged in the shell 1, air enters the shell 1 from the air inlet under the action of the draught fan 7, and is discharged from the air outlet after passing through each functional module.

Each function module is provided in the housing 1, and each function module is arranged in a staggered manner along the length direction (i.e., the up-down direction in the drawing) of the housing 1.

As shown, the functional modules of the air sterilizer include a spray sterilizer module 2. The spraying and sterilizing module 2 comprises a spraying layer 22, a packing layer 23 and a liquid supply assembly.

The spraying layer 22 is composed of a plurality of spraying pipelines with spray heads and is used for spraying the disinfectant to the packing layer 23. The filler layer 23 is composed of filler and a base frame for supporting the filler, and the filler layer 23 can increase the contact area and the contact time of the disinfectant and the air. The liquid supply assembly specifically comprises a collection pool arranged below the packing layer 23, a circulating pump 21 arranged in the collection pool and a liquid supply pipeline, and the liquid supply pipeline is communicated with the circulating pump 21 and a spraying pipeline of the spraying layer 22. The sterilizing liquid sprayed on the packing layer 23 falls into the collecting tank, and the sterilizing liquid in the collecting tank is supplied to the spraying layer 22 through the circulating pump 21 and the liquid supply pipeline, so that the recycling of the sterilizing liquid is realized.

In the figure, the packing layer 23 is arranged below the spraying layer 22, the spraying layer 22 sprays downwards, air passes through the packing layer 23 from bottom to top, the air and the disinfectant have opposite flow directions to form convection, and therefore the disinfecting and sterilizing effect is improved.

The disinfecting liquid of the spraying disinfecting module 2 is preferably neutral chlorine dioxide solution. The concentration of the neutral chlorine dioxide solution is preferably 100 mg/L. The neutral chlorine dioxide solution has better adsorbability and permeability on cell walls, and can effectively oxidize enzymes containing sulfhydryl in cells; can react with cysteine, tryptophan and free fatty acid to rapidly control the synthesis of biological protein and increase the permeability of the membrane; and can alter viral capsid proteins, resulting in viral inactivation. Of course, in practice, other sterilizing solutions may be used, such as peracetic acid solution or formalin solution.

The distance between the spraying layer 22 and the packing layer 23 is 0.5m-1m, the speed range of the air flowing through the spraying sterilizing module 2 is less than or equal to 1m/s, and the height range of the packing layer 23 is 0.4m-0.7 m. By the arrangement, the contact time of the air and the sterilizing liquid is longer, and a better sterilizing effect can be achieved.

The packing of the packing layer 23 adopts a structure capable of increasing the gas-liquid ratio, such as a taylor rosette or a pall ring. The filler of this structure has a small flow resistance to air.

As shown in the figure, the functional module of the air sterilizer further comprises a nano photocatalyst sterilizing module 3. The nano photocatalyst sterilizing module 3 is arranged at the downstream of the spraying sterilizing module 2 (namely above the spraying sterilizing module 2 in the figure), and air flows through the spraying sterilizing module 2 first and then flows through the nano photocatalyst sterilizing module 3.

The nano photocatalyst sterilizing module 3 comprises an ultraviolet lamp 31 and a nano photocatalyst 32. The ultraviolet lamp 31 is used to irradiate the nano photocatalyst 32, and the nano photocatalyst 32 is coated on the substrate. As shown in fig. 2, a set of ultraviolet lamps 32 may be disposed above and below the nano-photocatalyst 32, respectively.

The nanometer photocatalyst can decompose water molecules in the air into OH radical ions under the irradiation of ultraviolet rays. OH radical ions have strong oxidizing capability, and can decompose pathogenic bacteria, formaldehyde, benzene series and other pollution factors in the air, thereby achieving the effect of pollution-free sterilization.

The wavelength range of the ultraviolet rays emitted by the ultraviolet lamp 31 of the nano photocatalyst sterilizing module 3 is 240nm-280nm, the sterilizing effect of the ultraviolet rays in the wavelength range is stronger, and the sterilizing effect of the ultraviolet rays is strongest when the wavelength is 253.7 nm.

As shown in the figure, the functional module of the air sterilizer also comprises a high-efficiency filtering module 4 which can filter out the particulate matters with the diameter being more than or equal to 0.3 mu m in the air. The high-efficiency filter module 4 can thoroughly kill bacteria and viruses in the form of aerosol formed after the air is combined with fine particles. In general, filters with filter grades H12, H13, H14 are capable of filtering out particles with diameters of 0.3 μm or more from air.

Specifically, the high-efficiency filtering module 4 can be arranged between the nano photocatalyst sterilizing module 3 and the spraying sterilizing module 2, so that when air flows through the nano photocatalyst sterilizing module 3, particulate matters with the diameter of more than or equal to 0.3 μm in the air are filtered, and the problem that micropores of the nano photocatalyst sterilizing module 3 are blocked due to the fact that the particulate matters are deposited on the nano photocatalyst sterilizing module 3 can be prevented. Certainly, in practical implementation, the high-efficiency filtering module 4 may also be arranged downstream of the nano photocatalyst killing module 3, and a group of high-efficiency filtering modules 4 may also be arranged downstream of the nano photocatalyst killing module 3 and between the nano photocatalyst killing module 3 and the spray killing module 2.

As shown in the figure, the functional module of the air sterilizer further comprises an activated carbon adsorption module 5. The inside of the activated carbon is loose to form a plurality of micropores, the volume/surface area ratio is large, and the activated carbon has electrostatic attraction, so that harmful substances in the air can be adsorbed in the micropores of the activated carbon and can be removed.

Specifically, the activated carbon adsorption module 5 may be disposed downstream of the nano photocatalyst sterilizing module 3 (i.e., above the nano photocatalyst sterilizing module 3 in the figure), so that harmful substances decomposed in the process of irradiation sterilization may be adsorbed together. Certainly, in practical implementation, the activated carbon adsorption device may also be arranged between the nano-photocatalyst killing module 3 and the spray killing module 2, and a group of activated carbon adsorption modules 5 may also be arranged downstream of the nano-photocatalyst killing module 3 and between the nano-photocatalyst killing module 3 and the spray killing module 2.

Specifically, the activated carbon adsorption module 5 can be activated carbon with a diameter of about 2-5mm and a micropore ratio of 2-10 nm of 90%. The filling height of the activated carbon adsorption module 5 is about 150mm, and the speed range of air flowing through the activated carbon adsorption module 5 is not more than 0./s, so that the adsorption effect is good.

As shown in the figure, the functional module of the air sterilizer further comprises a dehumidifying module 6, and the dehumidifying module 6 is arranged between the nano photocatalyst sterilizing module 3 and the spraying sterilizing module 2 and is used for reducing the humidity of the air. The dehumidifying module 6 may be made of absorbent cotton having a good water absorption property. By reducing the humidity of the air, the blockage of the micropores of the nano photocatalyst sterilizing module 3 can be further prevented.

The air sterilizer ensures that viruses and bacteria existing in the form of aerosol in the air can be effectively and completely sterilized through the combination of four functional modules (a spraying sterilizing module 2, a nano photocatalyst sterilizing module 3, a high-efficiency filtering module 4 and an active carbon adsorption module 5). In addition, the dehumidifying module 6 is arranged between the spraying sterilizing module 2 and the nano photocatalyst sterilizing module 3, so that the air humidity flowing through the nano photocatalyst sterilizing module 3 is lower, the risk of blockage of micropores of the nano photocatalyst sterilizing module 3 is reduced, and the sterilizing effect and the operation stability of the equipment are further improved. The air sterilizing machine provided by the scheme can be used independently, and can also be assembled with an existing fresh air system or an air conditioning system for use.

The air sterilizer provided by the utility model is introduced in detail above. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. The air sterilizer is characterized by comprising a spraying sterilizing module (2) and a nano photocatalyst sterilizing module (3); the spraying and sterilizing module (2) comprises a spraying layer (22), a packing layer (23) and a liquid supply assembly, wherein the spraying layer (22) is used for spraying sterilizing liquid to the packing layer (23), and the liquid supply assembly is used for supplying the sterilizing liquid to the spraying layer (22); the nano photocatalyst sterilizing module (3) comprises nano photocatalyst (32) and an ultraviolet lamp (31) for irradiating the nano photocatalyst (32); the nano photocatalyst sterilizing module (3) is arranged at the downstream of the spraying sterilizing module (2), so that air flows through the spraying sterilizing module (2) firstly and then flows through the nano photocatalyst sterilizing module (3).

2. The air sterilizer of claim 1, wherein the sterilizing liquid is a neutral chlorine dioxide solution, a peroxyacetic acid solution, or a formalin solution.

3. The air sterilizer as claimed in claim 1, wherein the distance between the spray layer (22) and the filler layer (23) is in the range from 0.5m to 1m, and the height of the filler layer (23) is in the range from 0.4m to 0.7 m.

4. The air sterilizer as claimed in claim 1, wherein the filler of the filler layer (23) is of a taylor or pall ring structure.

5. The air sterilizer of claim 1, wherein the ultraviolet light has a wavelength ranging from 240nm to 280 nm.

6. The air sterilizer according to any one of claims 1 to 5, further comprising a high efficiency filter module (4), the high efficiency filter module (4) being capable of filtering out particulate matter in the air with a diameter of 0.3 μm or more.

7. The air sterilizer according to claim 6, wherein the high-efficiency filter module (4) is arranged between the spray-sterilizing module (2) and the nano-photocatalyst sterilizing module (3).

8. The air sterilizer according to claim 6, further comprising an activated carbon adsorption module (5), the activated carbon adsorption module (5) being arranged downstream of the nano-photocatalyst sterilizing module (3).

9. The air sterilizer of claim 8, further comprising an induced draft fan (7) and a controller communicatively connected to the induced draft fan (7), the controller configured to: and in the killing process, the rotating speed of the induced draft fan (7) is controlled, so that air flows through the activated carbon adsorption module (5) at a speed of less than or equal to 0.6m/s and flows through the spraying killing module (2) at a speed of less than or equal to 1 m/s.

10. The air sterilizer according to claim 8, further comprising a dehumidification module (6), the dehumidification module (6) being arranged between the nano-photocatalyst sterilization module (3) and the spray sterilization module (2).