CN111569134A

CN111569134A - Air purification microwave sterilizer and air purification microwave sterilization method

Info

Publication number: CN111569134A
Application number: CN202010312237.9A
Authority: CN
Inventors: 吴彩霞; 储昭卫; 姚威; 王宝根
Original assignee: Zhejiang Science And Technology Publicity And Education Center
Current assignee: Zhejiang Science And Technology Publicity And Education Center
Priority date: 2020-04-20
Filing date: 2020-04-20
Publication date: 2020-08-25

Abstract

The invention discloses an air purification microwave sterilizer and an air purification microwave sterilization method, belonging to sterilization equipment and a method, comprising a sterilization cabinet, wherein both sides of the sterilization cabinet are respectively provided with an air inlet and an air outlet, a microwave generator for emitting microwaves and a fan for sucking air from the air inlet and discharging air from the air outlet are arranged in the sterilization cabinet, a plurality of adsorption layers which are arranged at intervals and are used for adsorbing pathogenic bacteria are also arranged in the sterilization cabinet, and the time for the pathogenic bacteria to stay in the sterilization cabinet can be greatly prolonged due to the adsorption effect of the adsorption layers, so that the sterilization effect is improved, and the problem that the pathogenic bacteria are difficult to be killed because the time for air to pass through the sterilizer is too short in the prior art is solved.

Description

Air purification microwave sterilizer and air purification microwave sterilization method

Technical Field

The invention relates to a disinfection device and a disinfection method, in particular to an air purification microwave sterilizer and an air purification microwave disinfection method.

Background

With the enhancement of environmental awareness of people, people pay more attention to the air quality in various environments. The microorganisms in the indoor air mainly come from human bodies, dust granules, droplet droplets and the like in the air can be carriers of pathogenic microorganisms, and the pathogenic microorganisms are suspended in the air and enter the human bodies through respiratory tracts to cause the spread of diseases. Many relatively enclosed public spaces are major and important hazardous locations for respiratory pathogens, such as hospitals, malls, movie theaters, waiting rooms, and large exhibition halls, all of which are susceptible to influenza viruses. In order to prevent respiratory infections in these crowded public areas, it is necessary to effectively disinfect the air in real time and continuously.

The commonly used air disinfection and purification methods include air filtration, ultraviolet disinfection, photocatalyst disinfection, ozone disinfection, microwave disinfection, etc. The air filtering method is mainly a problem of difficult virus and bacteria filtration, the ultraviolet air disinfection method and the photocatalyst disinfection method have the problems of low virus and bacteria killing efficiency, and the ozone disinfection machine utilizes ozone to disinfect air, but residual ozone is harmful to human bodies. In addition, in the disinfection process of the existing equipment, the outside air continuously passes through the interior of the disinfection equipment through the fan so as to complete disinfection, and in order to ensure that the air can be extracted in a large range, the power of the fan is high, so that the staying time of the air in the disinfection equipment is short, and germs are difficult to effectively eliminate.

For example, the patent document in china discloses an "air purification and disinfection device", which is disclosed in CN209782863U and includes an ultraviolet germicidal lamp, an activated carbon filter screen, a photocatalytic screen, wheels, an air purification and disinfection box, and a fan, and has the disadvantages that the ultraviolet irradiation needs to last for a certain time to effectively perform the disinfection function, and the retention time of the air in the air purification and disinfection box is short under the action of the fan, which results in poor actual disinfection function.

Disclosure of Invention

The invention provides an air purification microwave sterilizer and an air purification microwave sterilization method, aiming at overcoming the problem that the actual sterilization effect is poor because air passes through the sterilizer under the action of a fan and the residence time in the sterilizer is short in the air purification sterilization process in the prior art, and the residence time of germs in the sterilizer can be prolonged, so that the effect of the sterilizer is greatly improved.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention discloses an air purification microwave sterilizer which comprises a sterilizing cabinet, wherein an air inlet and an air outlet are respectively arranged on two sides of the sterilizing cabinet, a microwave generator for emitting microwaves and a fan for sucking air from the air inlet and discharging the air from the air outlet are arranged in the sterilizing cabinet, a plurality of adsorption layers which are arranged at intervals and used for adsorbing pathogenic bacteria are also arranged in the sterilizing cabinet, and the microwave generator faces the adsorption layers.

The fan can suck outside air into the disinfection cabinet from the air inlet and discharge the air from the air outlet, so that the air can continuously pass through the disinfection cabinet, and the air needs to sequentially pass through a plurality of adsorption layers for adsorbing germs in the process of passing through the disinfection cabinet; the common air purifying sterilizer is only provided with the activated carbon filter screen, the activated carbon filter screen has the main functions of adsorbing magazines, dust and the like and has no adsorption effect on pathogenic bacteria, a certain amount of pathogenic bacteria can be adsorbed by the adsorption layer, and a plurality of adsorption layers arranged at intervals can carry out multiple interception on the pathogenic bacteria, so that the pathogenic bacteria are completely adsorbed on each adsorption layer as far as possible; if only the germs are adsorbed and intercepted without sterilization, more and more germs are accumulated on the adsorption net, after a period of time, the passing air can take away the germs on the adsorption net, and the microwave generator facing the adsorption layer can continuously kill the germs staying on the adsorption net, so that the accumulation of active germs on the adsorption net is avoided; for germs, in the process of air passing through the disinfection cabinet, viruses are adsorbed by the adsorption layer, are eliminated by microwaves and are taken away by subsequent air, and compared with a common disinfector, the time of staying in the disinfection cabinet is greatly prolonged, and the disinfection effect is better.

Preferably, the shell of the disinfection cabinet is made of stainless steel, the microwave generator is provided with a waveguide tube for controlling the microwave emission direction, the inner sides of the air inlet and the air outlet are both provided with microwave shielding nets, and the air inlet and the air outlet are also provided with activated carbon filter screens; although the microwave can effectively kill germs, the microwave also has certain harmfulness to human bodies; because the microwave can not penetrate through the metal, the stainless steel is used as the shell of the disinfection cabinet, so that the microwave is prevented from harming the human body, and the disinfection cabinet has certain strength and antirust and anticorrosive functions; the waveguide tube is used for controlling the microwave emission direction, so that microwaves can be concentrated on the adsorption net as far as possible, the waste of energy is avoided, and the damage to a human body caused by the escape of the microwaves is also avoided; the microwave shielding net can prevent the microwave from escaping without influencing the air inlet and outlet; the active carbon filter screen can filter dust and particulate matters in the air, and plays a role in purifying the air.

Preferably, the adsorption layer is a nano polypropylene layer, the thickness of the nano polypropylene layer is 2-4 mm, and adsorption holes with the aperture of 1-20 nm are formed in the nano polypropylene layer; experiments prove that the polypropylene nano-layer with the thickness of 2-4 mm and the adsorption holes with the aperture of 1-20 nm have better adsorption effect on pathogenic bacteria, and meanwhile, the air can be ensured to smoothly pass through the adsorption layer.

Preferably, the disinfection cabinet is arranged on the inner side of the disinfector shell, a control box and a power supply assembly are further arranged in the disinfector shell, universal wheels are arranged at the bottom of the disinfector shell, and the air purification microwave disinfector is further connected with a remote control sensing device; the disinfector in the scheme can be used in various different occasions, and the power supply assembly can be used in occasions with inconvenient power supply, such as buses; and the remote control sensing device and the control box can enable workers to move the sterilizer through remote control, so that the sterilizer is more convenient.

Preferably, an air quality detection unit, a battery power alarm unit and a filter screen replacement alarm unit are arranged in the control box; the air quality detection unit can enable the sterilizer to alarm and prompt a worker to start a sterilization mode when the air quality is poor, or automatically start when the air quality is poor; the battery electric quantity alarm unit can prompt a worker to change a power supply or charge when the power supply of the power supply assembly is insufficient; the filter screen replacement alarm unit can record the time of the last active carbon filter screen replacement, and prompts workers to replace the active carbon filter screen after the sterilizer sterilizes for a period of time; the unit can make the equipment more intelligent and meet the requirement of actual use.

Preferably, a disinfection channel is arranged in the disinfection cabinet, a plurality of partition plates for changing the direction of airflow for multiple times are arranged in the disinfection channel, the adsorption layer is arranged in the disinfection channel, and the partition plates comprise an inner side baffle close to one side of the microwave generator, an outer side baffle far away from the microwave generator and a longitudinal partition plate positioned between the outer side baffle and the inner side baffle; after entering the disinfection cabinet, the air enters the disinfection channel and is continuously changed in direction in the disinfection channel; the inner side baffle, the outer side baffle and the longitudinal partition board can greatly increase the flowing stroke of air in the disinfection cabinet on the premise of not increasing the size of the disinfection cabinet, thereby increasing the retention time of germs in the disinfection cabinet and ensuring better disinfection effect.

Preferably, the inner baffle and the partition are made of glass, plastic or ceramic, and the outer baffle is made of metal; according to the characteristics of the microwave, the microwave can easily penetrate through glass, plastic or ceramic, but can be reflected when encountering metal, the microwave emitted from the microwave generator firstly encounters the inner side baffle plate and penetrates through the outer side baffle plate to sterilize air and an adsorption layer in the sterilization channel, and the microwave can be reflected when reaching the outer side baffle plate, so that the microwave passes through the sterilization channel again, the energy utilization rate of the microwave is improved, and the sterilization effect is improved.

Preferably, the microwave generator is provided with a waveguide tube for controlling the microwave emission direction, the inner side baffle is embedded with a plurality of metal sheets, and the direction of the metal sheets is parallel to the direction of the microwave guided out by the waveguide tube; the direction of the metal sheet is parallel to the direction of the microwave guided out by the waveguide tube, so that the microwave guided out from the waveguide tube cannot enter the disinfection channel, and after the microwave is reflected by the outer side baffle, the direction of the microwave is changed, and the microwave is reflected by the metal sheet again when returning to the inner side baffle, so that the microwave returns to the disinfection channel again, the energy utilization rate of the microwave is further improved, and the possibility that the microwave escapes from the disinfection cabinet is reduced.

Preferably, an atomizing spray head facing the outer side of the air outlet is arranged in the disinfection cabinet; the atomizing spray head can spray disinfectant to the outside, and when personnel in a public place need to disinfect hands, the disinfector in the scheme can be used for disinfection; generally, when hand disinfection is carried out, the disinfectant is directly sprayed on hands and then the hands are rubbed to disinfect; however, when the amount of the disinfectant sprayed out is large, paper needs to be taken out to wipe hands, which is inconvenient, germs may exist in the paper-drawing in the public places after being touched by a plurality of people, and therefore the paper-drawing is not sanitary, and if an additional device for drying hands is used, the cost is increased, more space is occupied, and the gas for drying hands is not processed; the air purification microwave sterilizer can spray sterilized air to dry hands, and the temperature of the sprayed air is higher than normal temperature due to microwave sterilization, so that the air purification microwave sterilizer has a better hand drying effect; the atomizing nozzle can only spray water to the outside so as to humidify air.

The air purification microwave sterilizer is used for purification and disinfection, and comprises the following steps:

firstly, outside air is sucked into the disinfection cabinet through the air inlet;

secondly, driving air to flow by a fan, so that the air passes through the plurality of adsorption layers in sequence;

thirdly, the adsorption layer adsorbs pathogenic bacteria in the air, so that the retention time of the pathogenic bacteria in the disinfection cabinet is prolonged;

fourthly, the microwave generator uninterruptedly emits microwaves to the adsorption layer, so that sterilization and purification are completed;

fifthly, the filtered, sterilized and purified air is discharged out of the disinfection cabinet through an air outlet.

After the outside air sequentially passes through the plurality of adsorption layers, most of germs can be adsorbed on the adsorption layers to stay for a period of time and then be taken away by subsequent air, so that the stay time of the germs in the disinfection cabinet is prolonged, and the microwave disinfection effect is improved.

Therefore, the invention has the following beneficial effects: (1) the retention time of germs in the disinfection cabinet is longer, and the sterilization effect is better; (2) the microwave is not easy to escape from the disinfection cabinet, thereby avoiding the damage to the human body; (3) the travel of the gas in the disinfection cabinet is increased on the premise of not increasing the size of the disinfection cabinet, so that the sterilization time is prolonged, and the sterilization effect is improved; (4) the equipment is more intelligent and meets the requirement of actual use; (5) the energy utilization rate of the microwave is high; (6) can be under the prerequisite that does not occupy extra space, under the less prerequisite of increase cost, disinfect the people hand with the antiseptic solution to dry after the disinfection.

Drawings

Fig. 1 is a top view of the internal structure of a disinfection cabinet according to a first embodiment of the invention.

Fig. 2 is a side view of the internal structure of the first embodiment of the present invention.

Fig. 3 is a top view of the internal structure of the disinfection cabinet according to the second embodiment of the present invention.

Fig. 4 is a side view of the internal structure of the second embodiment of the present invention.

Fig. 5 is an external structural diagram of a second embodiment of the present invention.

In the figure: 1. the device comprises a disinfector shell 2, a control box 3, a disinfection cabinet 4, a power supply assembly 5, a universal wheel 6, an air inlet 7, an air outlet 8, a fan 9, a microwave shielding net 10, an activated carbon filter screen 11, a microwave generator 12, an adsorption layer 13, an atomizing nozzle 14, a waveguide tube 15, a disinfection channel 16, an inner side baffle 17, an outer side baffle 18, a longitudinal partition plate 19, a metal sheet 20, an auxiliary fan 21, a disinfection port 22 and an infrared detector.

Detailed Description

The invention is further described with reference to the following detailed description and accompanying drawings.

The first embodiment is as follows:

in the embodiment shown in fig. 1 and 2, the microwave sterilizer for air purification comprises a sterilizer casing 1 and a remote controller, wherein a control box 2, a sterilizing cabinet 3 and a power supply assembly 4 are installed on the inner side of the sterilizer casing, universal wheels 5 are installed at the bottom of the sterilizer casing, a control panel is installed on the outer side of the sterilizer casing, and a display screen is arranged on the control panel. The disinfection cabinet comprises an air inlet 6, an air outlet 7 and a fan 8 for sucking air in from the air inlet and discharging from the air outlet, wherein the distance between the air inlet and the ground is 30cm, because the density of dirty air is generally higher than that of clean air and is positioned at the lower layer of the closed space. The microwave shielding nets 9 are mounted on the inner sides of the air inlet and the air outlet, the microwave shielding nets are stainless steel shielding nets, the mesh sizes of the stainless steel shielding nets are 0.3mm, the thickness of the stainless steel shielding nets is 1.5mm, and holes made of stainless steel materials and with the hole diameters smaller than 0.5mm cannot penetrate through the stainless steel shielding nets according to tests, so that the stainless steel shielding nets can allow air to pass through to organize microwave leakage, and radiation damage of microwaves to personnel is avoided; still the joint is installed active carbon filter screen 10 on air inlet and the gas outlet, the active carbon filter screen specifically is HEPA active carbon composite filter screen. Still install microwave generator 11 and a plurality of interval of transmission microwave in the sterilizer and set up, be used for adsorbing the adsorbed layer 12 of germ, microwave generator orientation the adsorbed layer, the adsorbed layer is 6 nanometer polypropylene layers side by side, the aperture on nanometer polypropylene layer is 10 nanometers, and thickness is 3mm, nanometer polypropylene layer passes through the draw-in groove mode and installs inside the casing. Still be equipped with the atomizer 13 towards the gas outlet in the sterilizer, atomizer can be to external blowout antiseptic solution or water. The microwave generator is provided with a waveguide tube 14 for controlling the microwave emission direction, and the waveguide tube is rotatably connected with the microwave generator and can rotate when in use so as to sweep the generated microwave on the adsorption layer. An air quality detection unit, a battery electric quantity alarm unit, a filter screen replacement alarm unit and a remote control signal receiving unit are arranged in the control box; the air quality detection unit comprises a PM2.5 sensor, a temperature sensor and a humidity sensor, can detect the temperature and the humidity of the air and the concentration value of the PM2.5, and reflects the values on the display screen; the battery electric quantity alarm unit is connected with the power supply assembly, can detect the residual electric quantity of the power supply assembly and reflects the electric quantity on the display screen; the filter screen is changed alarm unit and can be taken notes when the active carbon filter screen of last time is changed, and the operating duration reaction of sterilizer behind the active carbon filter screen will be changed simultaneously on the display screen, when sterilizer operating duration reached a definite value, need change the active carbon filter screen. The remote control signal receiving unit can receive signals sent by the remote controller. The universal wheel is driven by a driving device, the driving device comprises a signal receiver, and a driver of the universal wheel can be controlled by receiving a signal sent by a remote controller, so that the universal wheel rotates or changes direction; and the remote controller is provided with a power supply component switch key, a working mode switching key and a mobile control key corresponding to the working mode switching key.

A method for air purification and microwave disinfection, which uses the air purification and microwave disinfection device of the first embodiment to perform purification and disinfection, comprising the following steps:

The air purification microwave sterilizer comprises 4 states, namely a charging state, a detection state, a working state and a charging working state. In the charging state, the sterilizer is connected with the socket through a plug wire to charge the power supply assembly, and the display screen can reflect the charging state at the moment. In the detection state, the air quality detection unit operates to detect the ambient temperature, humidity and PM2.5 concentration value constantly, and meanwhile, a user can control the sterilizer to move through the remote controller to find an area which is most needed to be subjected to air purification in a closed space according to the temperature, humidity and PM2.5 concentration value. The working states comprise a sleep mode, a disinfection and purification mode, a purification and humidification mode and a powerful mode; the fan is in a low-power rotating state in the sleep mode, the generated sound is small, the microwave generator is not started, and the air is purified mainly through the activated carbon filter screen and the adsorption layer; in the disinfection and purification mode, the microwave generator is started, and the air is disinfected and purified through the microwaves and the adsorption layer; in the purification and humidification mode, the microwave generator is not started, air is purified through the activated carbon filter screen and the adsorption layer, and meanwhile water mist is sprayed to the outside through the atomizing nozzle, so that the air humidity is increased; in the powerful mode, the microwave generator starts to disinfect and purify air through microwaves and the adsorption layer and sprays disinfectant water mist to the outside at the same time; when the charge is below 30%, the power mode cannot be activated. The charging operating state differs from the operating state in that the drive of the universal wheels is always in an inoperative state, the sterilizer does not move and the power mode can always be activated.

Example two:

in the embodiment shown in fig. 3-5, an air purifying microwave sterilizer differs from the first embodiment in that: be equipped with disinfection passageway 15 in the sterilizer, install a plurality of baffles that are used for changing the air current direction many times in the disinfection passageway, the adsorbed layer transversely sets up in the disinfection passageway, the quantity of adsorbed layer is 4, the baffle is including being close to inboard baffle 16, the outside baffle 17 far away apart from microwave generator and the longitudinal baffle 18 that is located between outside baffle and the inboard baffle of one side of microwave generator, inboard baffle, outside baffle and adsorbed layer are parallel to each other. The inner side baffle and the partition plate are made of ceramic, and the outer side baffle is made of metal. The microwave generator is provided with a waveguide tube used for controlling the microwave transmitting direction, the inner side baffle plate is embedded with a plurality of metal sheets 19, the direction of the metal sheets is parallel to the direction of the microwave guided out by the waveguide tube, and the metal sheets are positioned on the path of the microwave directly guided out by the waveguide tube, so that the middle part of the inner side baffle plate is not provided with the metal sheets. Be equipped with the disinfection passageway import that is used for the air to enter between outside baffle and the sterilizer inner wall, inside baffle and sterilizer inner wall support are equipped with the disinfection passageway export that is used for the air to leave, disinfection passageway import and disinfection passageway exit still are equipped with the auxiliary blower 20 that is used for air flow with higher speed, and whole disinfection passageway is the shape of concave-convex line. The waveguide does not rotate during use. The spraying direction of atomizer is downward to one side, and the sterilizer exit is equipped with disinfection mouth 21 towards the below, the outside of sterilizer casing is located disinfection mouth below department and still is equipped with infrared detector 22 that is used for detecting the people hand.

Compared with the method for purifying and disinfecting air by using the air purifying microwave disinfector in the first embodiment, the method for purifying and disinfecting air by using the air purifying microwave disinfector in the second embodiment has the following difference that the method further comprises the hand disinfecting function: when needs disinfect to people's hand, stretch both hands disinfection mouthful below, infrared detector detects behind the staff, atomizer blowout antiseptic solution disinfects to people's hand, atomizer can stop blowout antiseptic solution after infrared detector detects people's hand 5 seconds, passes through this moment air after the purification that the fan took out can be dried to people's hand.

Claims

1. The utility model provides an air purification microwave sterilizer, includes the sterilizer, the both sides of sterilizer are equipped with air inlet and gas outlet respectively, install the microwave generator that is used for launching the microwave in the sterilizer and be used for inhaling and follow gas outlet exhaust fan with the air from the air inlet, characterized by, still install a plurality of interval in the sterilizer and set up, be used for adsorbing the adsorbed layer of germ, the microwave generator orientation the adsorbed layer.

2. The microwave sterilizer for air purification according to claim 1, wherein the housing of the sterilizer is made of stainless steel, the microwave generator is provided with a waveguide for controlling the microwave emission direction, microwave shielding nets are respectively arranged on the inner sides of the air inlet and the air outlet, and activated carbon filter nets are further arranged on the air inlet and the air outlet.

3. The microwave sterilizer for air purification according to claim 1, wherein the adsorption layer is a nano polypropylene layer, the thickness of the nano polypropylene layer is 2 to 4mm, and the nano polypropylene layer is provided with adsorption holes with a pore diameter of 1 to 20 nm.

4. The microwave sterilizer for air purification according to claim 2, wherein the sterilizer is installed inside a sterilizer casing, a control box and a power supply module are further installed inside the sterilizer casing, and universal wheels are installed at the bottom of the sterilizer casing.

5. The microwave sterilizer for air purification according to claim 4, wherein an air quality detection unit, a battery level alarm unit and a filter screen replacement alarm unit are provided in the control box.

6. An air cleaning microwave sterilizer as claimed in claim 1, wherein a sterilizing channel is provided in said sterilizer, a plurality of partition plates for changing the direction of the air flow a plurality of times are installed in said sterilizing channel, said adsorption layer is provided in said sterilizing channel, and said partition plates include an inner baffle plate near one side of said microwave generator, an outer baffle plate far from said microwave generator, and a longitudinal partition plate between said outer baffle plate and said inner baffle plate.

7. The air purifying microwave sterilizer of claim 6, wherein the inner baffle and the partition are made of glass, plastic or ceramic, and the outer baffle is made of metal.

8. The microwave sterilizer for air purification according to claim 7, wherein the microwave generator is provided with a waveguide tube for controlling the microwave emission direction, the inner baffle is embedded with a plurality of metal sheets, and the direction of the metal sheets is parallel to the direction of the microwaves guided out by the waveguide tube.

9. An air cleaning microwave sterilizer as claimed in any one of claims 1 to 8, wherein the inside of the sterilizer is provided with an atomizing nozzle facing the outside of the air outlet.

10. A method for air purification and microwave sterilization, which is characterized in that the purification and sterilization are performed by using the air purification and microwave sterilizer of claim 1, comprising the steps of: