阅读说明：本技术 移动式空气消毒装置 (Movable air sterilizing device ) 是由 龙新平 许霜杰 程怀玉 张祖提 季斌 于 2020-04-30 设计创作，主要内容包括：公开了一种移动式空气消毒装置,包括带轮子的载体以及设置在所述载体上的混合器(1)、消毒液存储箱(3)和空气吸入口(5),混合器(1)用于混合空气和消毒液产生气液混合物,混合器(1)的消毒液入口通过泵(2)与消毒液存储箱(3)的消毒液出口流体连通,混合器(1)的空气入口与空气吸入口(5)流体连通,混合器(1)的扩散管与消毒液存储箱(3)上的气液混合物进口通过管道(8)流体连通,管道(8)上设有防止流动倒转的止回阀(4)。离开混合器(1)的气液混合物会进入消毒液存储箱(3)内部,完成气液分离,消毒后的空气由箱体上的空气出口返回空气中,消毒液则由消毒液出口再次进入混合器(1),实现消毒液的循环利用。(The utility model discloses a portable air degassing unit, including the carrier of band pulley and setting up blender (1), antiseptic solution storage tank (3) and air suction inlet (5) on the carrier, blender (1) is used for mixing air and antiseptic solution and produces gas-liquid mixture, the antiseptic solution entry of blender (1) passes through pump (2) and antiseptic solution outlet fluid intercommunication of antiseptic solution storage tank (3), the air inlet and the air suction inlet (5) fluid intercommunication of blender (1), the diffuser pipe of blender (1) passes through pipeline (8) fluid intercommunication with the gas-liquid mixture import on antiseptic solution storage tank (3), be equipped with on pipeline (8) and prevent flowing reverse check valve (4). The gas-liquid mixture leaving the mixer (1) enters the disinfectant storage tank (3) to complete gas-liquid separation, the disinfected air returns to the air through the air outlet on the tank body, and the disinfectant enters the mixer (1) again through the disinfectant outlet, so that the disinfectant is recycled.)

1. An air disinfection device is characterized by comprising a carrier, a mixer (1), a disinfectant storage tank (3) and an air suction inlet (5), wherein the mixer, the disinfectant storage tank and the air suction inlet are arranged on the carrier;

the mixer (1) comprises: a disinfectant inlet (1-1); an air inlet (1-2); a suction chamber (1-4); a mixing pipe (1-5) for mixing the two fluids flowing in from the disinfecting liquid inlet (1-1) and the air inlet (1-2); and a diffuser pipe (1-6) for letting the mixed fluid out of the mixer; wherein the disinfectant inlet (1-1) is in fluid communication with the suction chamber (1-4) through the nozzle (1-3), the air inlet (1-2) is in fluid communication with the suction chamber (1-4), the mixing pipe (1-5) and the diffusion pipe (1-6) are in fluid communication in sequence, the flow passage area of the suction chamber (1-4) is gradually reduced along the fluid flowing direction, the part of the mixing pipe (1-5) close to the suction chamber (1-4) is a straight pipe, the part of the mixing pipe (1-5) far away from the suction chamber (1-4) is a wavy pipeline, and the flow passage area of the diffusion pipe (1-6) is gradually reduced along the fluid flowing direction;

the disinfectant storage box (3) comprises a box body for containing disinfectant, and a disinfectant outlet (3-2), a gas-liquid mixture inlet (3-6) and an air outlet (3-9) which are positioned on the box body;

wherein a disinfectant outlet (3-2) of the disinfectant storage tank (3) is in fluid communication with a disinfectant inlet (1-1) of the mixer (1) through a circulating water pump (2), an air suction inlet (5) is in fluid communication with the air inlet (1-2) of the mixer (1), a diffusion pipe (1-6) of the mixer (1) is in fluid communication with a gas-liquid mixture inlet (3-6) of the disinfectant storage tank (3) through a pipeline (8), and a check valve (4) for preventing the flow from reversing is arranged on the pipeline (8).

2. An air disinfection apparatus as claimed in claim 1, characterized in that the suction chamber (1-4) is provided with a number of curved baffles extending from one end of the suction chamber (1-4) to the other.

3. An air disinfecting device as claimed in claim 1 characterized in that the nozzle (1-3) is a multi-hole nozzle (1-3a) or an orifice-type nozzle (1-3b) with an inverted cone shape to enhance the spreading angle of the fluid.

4. An air disinfection device as claimed in claim 2, characterized in that the thickness of the flow deflector in the suction chamber (1-4) is between 0.05D and 0.1D and the height is between 0.1D and 0.2D, where D is the diameter of the mixing tube (1-5).

5. An air disinfection device as claimed in claim 1, characterized in that the straight pipe length in the mixing pipe (1-5) is 3D-5D, and the wavy pipe length is 12D-20D, where D is the diameter of the mixing pipe (1-5).

6. An air disinfection device as claimed in claim 1, characterized in that the diffusion angle β of the diffuser pipes (1-6) is between 8-12 °.

7. An air sterilizer as claimed in claim 1, wherein the sterilizing fluid storage tank (3) has a filtering chamber in the tank for filtering out solid particles from the gas-liquid mixture flowing in through the gas-liquid mixture inlet (3-6) and a reservoir for storing the filtered sterilizing fluid, wherein the gas-liquid mixture inlet (3-6) is in fluid communication with the filtering chamber, the sterilizing fluid outlet (3-2) is in fluid communication with the reservoir, and the air outlet (3-9) is located above the reservoir.

8. An air disinfection apparatus as claimed in claim 1 or 7, characterized in that the air outlet (3-9) and/or the air intake (5) of the disinfection liquid storage tank (3) are/is provided with a separation net.

9. An air sterilizer as claimed in claim 1 or 7, wherein the sterilizing fluid storage tank (3) further comprises a heater (3-3) for heating the sterilizing fluid, and a temperature control system (3-4) for controlling the temperature of the heater (3-3).

10. An air sterilizer as claimed in claim 1, wherein the carrier base is provided with wheels.

Technical Field

At least one embodiment of the present disclosure is directed to a mobile air sanitizer.

Background

Airborne transmission is the primary mode of transmission of infectious disease viruses in the respiratory system. The air transmission comprises three transmission paths of droplet transmission, droplet nucleus transmission and dust transmission, more than 10000 virus-carrying droplets are generated by sneezing or coughing of virus infected persons, the droplets can be transmitted by more than 8m at the farthest distance, the small droplets can be evaporated in the air to become dry droplet nuclei, the formed aerogel floats in the air and contacts with the mucous membrane of other people to transmit diseases. The long-distance transmission and long-time existence of the droplets can lead the indoor air to be filled with viruses, the transmission path is difficult to block, large-scale infection can be caused in indoor places, public places, hospitals and the like where people gather, and great difficulty is brought to the prevention and treatment of epidemic situations.

How to effectively sterilize air and reduce the disease infection caused by air transmission is a subject of constant attention. At present, the common air disinfection technologies in the market mainly include: ultraviolet disinfection, ozone disinfection, chemical fumigation, spraying and the like. Most of these techniques are terminal disinfection, which is convenient but has many problems: (1) the air is not circulated during the disinfection period, which is not suitable for the activity of people; (2) the air sterilization speed is slow, and the indoor air cannot be sterilized quickly; (3) can cause secondary pollution to the environment and irreversible damage to people.

Disclosure of Invention

At least one embodiment of the present disclosure provides a mobile air sanitizer. The energy-saving, environment-friendly and economical effects are ensured, and meanwhile, indoor air is better disinfected, and the spread of viruses is prevented.

At least one embodiment of the present disclosure provides an air sanitizer including a carrier, and a mixer, a sanitizer storage tank, and an air intake disposed on the carrier;

the mixer includes: a disinfectant inlet; an air inlet; a suction chamber; a mixing pipe that mixes the two fluids flowing in from the sterilizing fluid inlet and the air inlet; and a diffuser pipe for allowing the mixed fluid to exit the mixer; the disinfectant inlet is communicated with the suction chamber through a nozzle in a fluid mode, the air inlet is communicated with the suction chamber in a fluid mode, the suction chamber, the mixing pipe and the diffusion pipe are sequentially communicated in a fluid mode, the flow passage area of the suction chamber is gradually reduced along the fluid flowing direction, the portion, close to the suction chamber, of the mixing pipe is a straight pipe, the portion, far away from the suction chamber, of the mixing pipe is a wavy pipeline, and the flow passage area of the diffusion pipe is gradually reduced along the fluid flowing direction;

the disinfectant storage box comprises a box body for containing disinfectant, and a disinfectant outlet, a gas-liquid mixture inlet and an air outlet which are arranged on the box body;

wherein a disinfectant outlet of the disinfectant storage tank is in fluid communication with the disinfectant inlet of the mixer through a circulating water pump, the air suction inlet is in fluid communication with the air inlet of the mixer, the diffuser pipe of the mixer is in fluid communication with the gas-liquid mixture inlet of the disinfectant storage tank through a pipeline, and the pipeline is provided with a check valve for preventing the reverse flow.

In some examples, the suction chamber has a plurality of curved guide vanes mounted therein, the guide vanes extending from one end of the suction chamber to the other end.

In some examples, the nozzle is a multi-orifice type nozzle, or an orifice type nozzle with an inverted cone shape to enhance the diffusion angle of the fluid.

In some examples, the guide vane in the suction chamber has a thickness of between 0.05D and 0.1D and a height of between 0.1D and 0.2D, where D is the diameter of the mixing tube.

In some examples, the straight tube length in the mixing tube is 3D to 5D, and the wavy tube length is 12D to 20D, where D is the diameter of the mixing tube.

In some examples, the diffuser tube has a diffuser angle β between 8 and 12 °.

In some examples, the sterilizing fluid storage tank has a filtering chamber for filtering out solid particles in the gas-liquid mixture flowing in through the gas-liquid mixture inlet, and a reservoir for storing the filtered sterilizing fluid, wherein the gas-liquid mixture inlet is in fluid communication with the filtering chamber, the sterilizing fluid outlet is in fluid communication with the reservoir, and the air outlet is located above the reservoir.

In some examples, the air outlet and/or the air intake on the sanitizer storage tank is provided with an isolation mesh.

In some examples, the sterilizing fluid storage tank further includes a heater to heat the sterilizing fluid, and a temperature control system to control a temperature of the heater.

In some examples, the bottom of the carrier is provided with wheels.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly described below.

Fig. 1 is a schematic cross-sectional structure diagram of a mixer according to an embodiment of the disclosure.

Fig. 2 is a schematic cross-sectional structure diagram of a mixer according to another embodiment of the disclosure.

Fig. 3a is a schematic structural view of a suction chamber with a rotating baffle according to an embodiment of the present disclosure.

Fig. 3b is a partial structural view of the suction chamber shown in fig. 3 a.

Fig. 4a is a front view of a multi-orifice nozzle provided in accordance with an embodiment of the present disclosure.

Fig. 4b is a schematic cross-sectional view of a multi-orifice nozzle according to an embodiment of the present disclosure.

Fig. 5a is a front view of an orifice-type nozzle provided by an embodiment of the present disclosure.

Fig. 5b is a schematic cross-sectional view of an orifice-type nozzle provided in accordance with an embodiment of the present disclosure.

Fig. 6 is a schematic diagram illustrating a principle of a separation type air purification apparatus according to an embodiment of the present disclosure.

Fig. 7 is a schematic view of a disinfectant storage box according to an embodiment of the disclosure.

Description of reference numerals:

1-a mixer;

2-a circulating water pump;

3-a disinfectant storage box;

4-a check valve;

5-air intake;

6-an isolation net;

7-wheels;

8-a pipeline;

1-1-a disinfectant inlet;

1-2-air inlet;

1-3-nozzle;

1-3 a-multi-orifice type nozzle;

1-3 b-orifice type nozzles;

1-4-a suction chamber;

1-5-mixing tube;

1-6-diffusion tube;

3-1-a disinfectant;

3-2-a disinfectant outlet;

3-3-a heater;

3-4-temperature control system;

3-5-stock solution supply device;

3-6-gas-liquid mixture inlet;

3-7-a filter screen;

3-8-a separator;

3-9-air outlet.

Detailed Description

A mixer will be described, the term "mixer" referring herein to a mixer that mixes fluids. Such a mixer can mix air and sanitizing liquid to produce a stream of purified air for environmental or climate control. The structure of the mixer is optimized, a very strong fluid shearing and mixing effect can be generated in the mixer, the sucked air and the disinfectant are fully mixed and chemically reacted to form a uniform gas-liquid mixture containing a large number of micro-bubbles, the air and the disinfectant are fully mixed in a contact manner, and the air disinfection effect of the disinfectant can be maximally exerted.

Fig. 1 is a schematic cross-sectional view of a mixer according to an embodiment of the present disclosure; fig. 2 is a schematic cross-sectional structure diagram of a mixer according to another embodiment of the disclosure. Referring to fig. 1 and 2, the mixer includes a sterilizing fluid inlet 1-1, an air inlet 1-2, a suction chamber 1-4, a mixing pipe 1-5 for mixing two fluids flowing in from the sterilizing fluid inlet 1-1 and the air inlet 1-2, and a diffuser pipe 1-6 for allowing the mixed fluid to exit the mixer. The disinfectant inlet 1-1 is in fluid communication with the suction chamber 1-4 through the nozzle 1-3, the nozzle 1-3 extends into the suction chamber 1-4, the air inlet 1-2 is in fluid communication with the suction chamber 1-4, and the suction chamber 1-4, the mixing pipe 1-5 and the diffusion pipe 1-6 are in fluid communication in sequence. The flow passage area of the suction chamber 1-4 is gradually reduced along the fluid flow direction, and the flow passage area of the diffuser pipe 1-6 is gradually increased along the fluid flow direction. In order to improve the mixing effect of the mixer, the part of the mixing pipe 1-5 close to the suction chamber 1-4 is a straight pipe, and the part of the mixing pipe 1-5 far from the suction chamber 1-4 is a wavy pipeline.

When air and disinfectant are mixed by a mixer to generate purified air flow, the fluid at the disinfectant inlet 1-1 is the disinfectant fluid with higher pressure after being pressurized, the air to be disinfected with lower pressure is at the air inlet 1-2, the disinfectant enters the suction chamber 1-4 through the disinfectant inlet 1-1 and the nozzle 1-3, a plurality of strands of high-speed fluids are formed due to the reduction of the flow passage area, the high-speed fluids enter the mixing pipe 1-5, a low-pressure area is formed at the mixing pipe 1-5 due to the entrainment effect of the high-speed fluids, the air to be disinfected is sucked into the mixer 1 under the pressure difference between the low pressure and the external atmospheric pressure, the air and the disinfectant are mixed in the mixing pipe 1-5 to form a gas-liquid mixture, and the gas-liquid mixture leaves the mixer through the diffusion pipe 1-6.

The air and the disinfectant can be fully mixed in the mixing pipes 1-5 to form a uniform gas-liquid mixture containing a large number of micro bubbles, so that the air and the disinfectant are fully mixed and react, and a good air disinfection effect can be achieved under the action of the disinfectant. And because the mixer has strong air suction capacity, the air entrainment droplets can be sucked into the mixer, thereby not only reducing the distribution of viruses in the air, but also efficiently disinfecting the air. In addition, the air is treated by the liquid-based disinfectant, so that the disinfectant can fully contact viruses in the air, the disinfection effect is better, various pathogens are directly treated, the universality is high, and the application range is wide.

As shown in fig. 3a and 3b, in order to improve the mixing effect of the mixer, a plurality of curved guide vanes are installed in the suction chamber 1-4, and extend from one end of the suction chamber 1-4 to the other end.

Referring to fig. 1, 4a and 4b, the nozzle 1-3 may be a multi-hole nozzle 1-3a, and the multi-hole nozzle 1-3a is provided with a plurality of holes, so that the disinfectant is converted from a single-strand to a plurality of high-speed fluids, the contact area with air is increased, and the air suction capacity is further significantly enhanced, and the device is suitable for occasions with high requirements on air disinfection speed.

Referring to fig. 2, 5a and 5b, the nozzles 1-3 may also be orifice-type nozzles 1-3b, and the orifice-type nozzles 1-3b have an inverted cone shape, which greatly increases the diffusion angle of the fluid flowing through the component, and although the mixing effect is slightly weaker than that of the porous nozzles 1-3a, the flow loss is smaller, which is suitable for the situation where more importance is placed on energy conservation.

By adopting the mixer nozzles 1-3 which are optimally designed, the contact area of the disinfectant and the air is increased, the air suction capacity of the disinfectant is obviously improved, the reaction and mixing degree of the disinfectant and the air is enhanced, and the air containing a large amount of viruses can be forcibly sucked for strong disinfection.

In order to obtain better mixing effect and suction capacity and accelerate the air disinfection speed, the main structural parameter range of the mixer is defined. For convenience of description, the diameter D of the mixer mixing tube 1-5 is taken as a reference quantity. The mixer main structural parameters can be: the inner diameter of the disinfectant inlet 1-1 is about 1.2D-1.5D; the inner diameter of the air inlet 1-2 is about 2D-4D; the distance between the nozzle 1-3 and the inlet of the mixing pipe 1-5 is about 0.7D-1.5D, and the diameter is about 0.3D-0.6D; the thickness of the multi-hole nozzle 1-3a is about 2.5 mm-5 mm, the number of holes is 4-12, the size of each hole can be different, and the multi-hole nozzle can be adjusted according to actual needs; the diameter of the orifice type nozzle 1-3b is about 0.15D-0.45D, the thickness is about 2.5 mm-5 mm, and the angle is 30-45 degrees; the contraction angle alpha of the suction chamber 1-4 is between 60 degrees and 120 degrees, the thickness of the flow deflector is between 0.05D and 0.1D, and the height is between 0.1D and 0.2D; the ratio L/D of the length L to the diameter D of the mixing pipe 1-5 is 15-25, the length of the straight pipe of the mixing pipe 1-5 is about 3D-5D, and the length of the wavy pipeline is 12D-20D; the diffusion angle beta of the diffusion pipes 1-6 is between 8 and 12 degrees, and the length is between 5D and 9D.

Fig. 6 is a schematic diagram of a mobile air sterilizer according to an embodiment of the present disclosure. As shown in fig. 6, the mobile air sterilizer comprises a carrier, the carrier is a trolley with wheels 7 mounted at the bottom, and is convenient to move, and the mixer 1, the circulating water pump 2, the disinfectant storage tank 3 and the air suction inlet 5 are arranged on the carrier.

The circulating water pump 2 provides circulating power for the whole disinfection device, and the contact surface between the interior of the disinfection device and liquid is specially treated (such as manufacturing a pump body by adopting a PVC material, spraying an anti-corrosion coating on the surface of the pump and the like) so as to improve the corrosion resistance of the disinfection device and reduce the working noise of the disinfection device. The air suction inlet 5 is a pipe with a horn-shaped tail end and is arranged on the side wall of the carrier or is a part of the side wall of the carrier. The air intake opening 5 is in fluid communication with the mixer 1 and functions to introduce air to be sterilised inside the mixer 1. In an environment with high humidity, air often contains more water vapor, disinfection liquid can be diluted by direct suction, and in order to dehydrate the air, a separation net 6 with a porous structure is arranged at an air suction opening 5. In addition, the separation net 6 can prevent impurities from being sucked into the mixer.

Fig. 7 is a schematic view of a disinfectant storage box according to an embodiment of the disclosure. As shown in fig. 7, the sterilizing liquid storage tank 3 includes a tank body, and a sterilizing liquid outlet 3-2, a gas-liquid mixture inlet 3-6 and an air outlet 3-9 provided on the tank body. The interior of the box body is filled with pre-prepared disinfectant 3-1, and the main components of the disinfectant can be flexibly changed according to the specific conditions of viruses so as to achieve the optimal disinfection effect. Disinfectant in the box body enters the mixer 1 through the disinfectant outlet 3-2 and the circulating water pump 2 to be mixed with air to form a gas-liquid mixture, the gas-liquid mixture leaves from the mixer 1 and then enters the box body from the gas-liquid mixture inlet 3-6, gas-liquid separation is completed in the box body, and the disinfected air is discharged from the air outlet 3-9.

In addition, a filter chamber and a liquid storage chamber may be provided in the tank body of the disinfectant storage tank 3, the filter chamber being configured to filter out solid particles in the gas-liquid mixture leaving from the mixer 1, and the filtered disinfectant entering the liquid storage chamber. Thus, the filter chamber is in fluid communication with the gas-liquid mixture inlet 3-6 and the reservoir chamber is in fluid communication with the sterilizing fluid outlet 3-2 and the air outlet 3-9. In a possible embodiment, the filtering chamber and the reservoir may be enclosed by the inner wall of the tank, the filtering screen 3-7 and the partition plate 3-8. The filter screen 3-4 is transversely arranged to divide the box body into an upper part and a lower part, the partition board 3-8 is vertically arranged in the upper space and divides the upper space into a left part and a right part, and the air outlet 3-9 is positioned on the side wall and/or the top of the right space. In addition, the filter screens 3-4 can be detachable, so that the cleaning is convenient.

In addition, the disinfectant storage box 3 can also comprise a heater 3-3 and a temperature control system 3-4, the heater 3-3 is used for heating the disinfectant to the temperature at which viruses are difficult to survive, the viruses can be killed and killed more efficiently by utilizing the high temperature of the disinfectant, and meanwhile, the temperature of the disinfectant can be monitored and controlled in real time through the temperature control system 3-4, so that overheating of the device is avoided.

In addition, a disinfectant stock solution supply device 3-5 and a waste liquid discharge port 3-10 which are in fluid communication with the liquid storage chamber can be arranged on the purified liquid storage tank 3. The disinfectant stock solution can be supplemented in time through the disinfectant stock solution supplementing devices 3-5. The used disinfectant can be discharged through the disinfectant outlet 3-10.

With continued reference to fig. 6, the disinfecting liquid inlet 1-1 of the mixer 1 is in fluid communication with the disinfecting liquid outlet 3-2 of the disinfecting liquid storage tank 3 through the circulating water pump 2, the air inlet 1-2 of the mixer 1 is in fluid communication with the air suction inlet 5, the diffuser pipe 1-6 of the mixer 1 is in fluid communication with the gas-liquid mixture inlet 3-6 on the disinfecting liquid storage tank 3, and the pipeline 8 between the diffuser pipe 1-6 and the gas-liquid mixture inlet 3-6 is provided with a check valve 4 for preventing the flow from reversing.

The gas-liquid mixture leaving the mixer 1 enters the filtering chamber inside the box body through the gas-liquid mixture inlet 3-6 on the disinfectant storage box 3 and then passes through the filtering screen 3-7, so that on one hand, the solid possibly existing in the mixture can be filtered, on the other hand, the contact between air and disinfectant is further promoted, and the disinfection effect can be improved. The gas-liquid mixture completes gas-liquid separation in the box body, and due to the existence of the isolation plates 3-8, the sterilized air returns to the air from the air outlets 3-9, and the disinfectant enters the pipeline of the disinfection device again from the disinfectant outlet 3-2, so that the cyclic utilization of the disinfectant is realized.

It is noted that the gas escaping after mixing carries a large amount of water droplets, if the gas is directly discharged, the humidity of the indoor air is increased, and in order to dehydrate the gas, the air outlet 3-9 can be provided with a separation net 6 with a porous structure.

It should be noted that all parts of the mobile air disinfection device are placed on the carrier, so that the mobile air disinfection device is small in size and small in occupied space in a room, and can be conveniently moved in different rooms due to the wheels 7.

The mixer disclosed by the invention has the advantages of simple structure, easiness in manufacturing and reliability in operation, and other parts of the movable air disinfection device are cheaper, so that the whole disinfection device is economical and practical, and is reliable in operation and convenient to popularize.

This disclosure portable air degassing unit adopts the disinfection mode based on liquid, through the constitution of reasonable adjustment antiseptic solution, can kill to some virus pertinence, simultaneously based on the disinfection mode of liquid, water itself just can handle multiple contamination in the air, and moisture in the antiseptic solution also makes it can disinfect indoor pollutant well, if PM2.5 suspended particles then can be adsorbed by the antiseptic solution very easily and be got rid of.

When the movable air disinfection device disclosed by the disclosure is used for disinfecting a hospital, considering that the hospital has a large flow of people and a large space, and aerosol containing a large amount of viruses is often contained in air, the nozzles 1-3 of the mixer 1 are selected to be porous nozzles 1-3a, so that the disinfection speed is higher. The components of the disinfectant solution should contain more oxidants, such as sodium hypochlorite, hydrogen peroxide and the like, the concentration of the oxidants is about 8-15%, and the rest is water; or 75% medical alcohol is selected as the disinfectant. In addition, the temperature of the sterilizing liquid can be controlled to be 60 ℃ by a temperature control system.

When the air purification device disclosed by the disclosure is used for sterilizing a house, the nozzles 1-3 of the mixer 1 are selected to be the orifice type nozzles 1-3b, so that the energy consumption is lower in consideration of less family personnel and small space. The components of the disinfectant solution should contain more oxidants, such as sodium hypochlorite, hydrogen peroxide and the like, the concentration of the oxidants is about 8-15%, and the rest is water; or 75% medical alcohol is selected as the disinfectant. In addition, the temperature of the sterilizing liquid can be controlled to be 60 ℃ by a temperature control system.