CN108576192A - Intelligent photocatalysis antibacterial preservation device and its preservation method for fruits and vegetables storeroom - Google Patents
Intelligent photocatalysis antibacterial preservation device and its preservation method for fruits and vegetables storeroom Download PDFInfo
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- CN108576192A CN108576192A CN201810263308.3A CN201810263308A CN108576192A CN 108576192 A CN108576192 A CN 108576192A CN 201810263308 A CN201810263308 A CN 201810263308A CN 108576192 A CN108576192 A CN 108576192A
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B7/00—Preservation or chemical ripening of fruit or vegetables
- A23B7/015—Preserving by irradiation or electric treatment without heating effect
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B7/00—Preservation or chemical ripening of fruit or vegetables
- A23B7/14—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10
- A23B7/144—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10 in the form of gases, e.g. fumigation; Compositions or apparatus therefor
- A23B7/152—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10 in the form of gases, e.g. fumigation; Compositions or apparatus therefor in a controlled atmosphere comprising other gases in addition to CO2, N2, O2 or H2O ; Elimination of such other gases
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B7/00—Preservation or chemical ripening of fruit or vegetables
- A23B7/14—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10
- A23B7/153—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10 in the form of liquids or solids
- A23B7/157—Inorganic compounds
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B7/00—Preservation or chemical ripening of fruit or vegetables
- A23B7/14—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10
- A23B7/153—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10 in the form of liquids or solids
- A23B7/159—Apparatus for preserving using solids
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/80—Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
- Y02P60/85—Food storage or conservation, e.g. cooling or drying
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- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Storage Of Fruits Or Vegetables (AREA)
Abstract
The invention discloses a kind of intelligent photocatalysis antibacterial preservation devices and its preservation method for fruits and vegetables storeroom, including hollow shell, ultraviolet lamp, variable speed fan, STM32 modules, Temperature Humidity Sensor and the ethylene sensor with wireless transmitting function；Hollow shell is three layers of tubular structure of inside and outside nested type, and outer layer is filter screen, and middle layer is composite layer, and internal layer is activated carbon fiber photocatalysis layer；Ultraviolet lamp is mounted in the internal cavities of hollow shell；Temperature Humidity Sensor, ethylene sensor are separately mounted on the inner wall of activated carbon fiber photocatalysis layer, for periodically detecting ethylene concentration and humiture in storeroom, and the ethylene concentration information wireless transmission measured can be gone out；Variable speed fan is mounted on the opening at the top of hollow shell, and is connect with STM32 modules.The present invention has the advantages that energy saving, emission reduction, intelligent, safe efficient, non-secondary pollution, adaptable, economical and practical, operating cost is low etc., it can be achieved that fresh-keeping to the high-efficiency antimicrobial of the fruits and vegetables such as banana.
Description
Technical field
The present invention relates to the technical fields of storeroom anti-bacterial refreshing, refer in particular to a kind of intelligent light for fruits and vegetables storeroom
Catalytic antimicrobial preservation device and its preservation method.
Background technology
China is fruits and vegetables big producer in the world, due to the backwardness of current fresh-keeping technology during storage and transportation condition, is had every year big
The fruit and vegetable food of amount rots, and causes huge waste.The main reason for rotting is that banana discharges in storage
The germ of ethylene and itself.
Ethylene is to adopt putrid and deteriorated one of the key factor of rear fruits and vegetables, and in closed fresh-keeping environments, ethylene can accelerate fruit
The respiratory intensity of vegetable enhances the metabolic activity of enzyme, permeability of cell membrane and area is accelerated to format loss, promotion fruit softening, vegetables
Move back green, shortening fruit vegetables storing quality and time.Traditional removing ethylene method (such as physisorphtion, potassium permanganate oxidation method,
Removed under reduced pressure method etc.) there are some defects in actual application, oneself cannot fully meet the demand of economic development.According to correlation
Statistics, the rotten proportion of goods damageds of China's fresh fruit are up to 30% at this stage, and developed country's average loss rate is less than 7%.
In recent years, banana blight, scab, leaf spot, leaf margin blight, bacterial soft rot, floral leaf heart rot and
The disease pests harm such as flower moss horse is extremely serious, affects the yield and quality of banana.Wherein, wilt disease be still banana industry most
Big to threaten, in recent years, which has different degrees of generation in all banana producing regions.Banana blight is one kind by Fusarium oxysporum
Caused fibrovascular system venereal disease evil, destructive destruction is often resulted in banana production.And nearly 2 years, in the Delta of the Pearl River
The banana garden of the Xuwen Jiao Qu in dwarf banana garden and west of Guangdong Province Yuexi, it has been found that there is bacterial soft rot to endanger banana, serious incidence reaches
20%, larger loss is caused to banana peasant, is a potential threat.From field to consumer's dining table after banana harvesting
In the entire process of circulation, often due to rotting, aging is rotten etc. causes largely to lose.Banana during storage be easy by
Various diseases are infected in the invasion of various germs, and since ultraviolet light has various biologies and photochemical effect, it is applied to
In the sterilization of banana.Cardinal principle is various viruses, bacterium and other causes in the energy damages water body using UV photons
The DNA structure of sick body.Ultraviolet sterilization is mainly that the various structural bonds in DNA is made to be broken or occur photochemical polymerization reaction, example
Such as make THYMINE dimerization in DNA, replicates fertility to make various viruses, bacterium and other pathogens lose, reach and kill
The effect of bacterium.
Therefore, seeking the postharvest technology of fruits and vegetables of more efficient, environmental protection and energy-efficient sustainable development seems imperative, right
It is essential that fruit, which carries out fresh-keeping and processing,.
Invention content
The shortcomings that it is an object of the invention to overcome the prior art and deficiency, it is proposed that a kind of intelligence for fruits and vegetables storeroom
Can photocatalysis antibacterial preservation device and its preservation method, the device have energy saving, emission reduction, it is intelligent, safe efficient, without secondary dirt
Dye, the advantages such as adaptable, economical and practical, operating cost is low are, it can be achieved that fresh-keeping to the high-efficiency antimicrobial of the fruits and vegetables such as banana.
To achieve the above object, technical solution provided by the present invention is as follows：
Include hollow shell, ultraviolet lamp, variable-ratio wind for the intelligent photocatalysis antibacterial preservation device of fruits and vegetables storeroom
Fan, STM32 modules, Temperature Humidity Sensor and the ethylene sensor with wireless transmitting function；Wherein, the hollow shell is
Three layers of tubular structure of inside and outside nested type, outer layer are filter screen, and for filtering out large particle, wherein interbed is composite material
Layer, for removing small particle and murdering the bacterium in gas, internal layer is activated carbon fiber photocatalysis layer, is used for adsorbed gas
In a large amount of ethylene and under the irradiation of ultraviolet light by ethylene decomposition at carbon dioxide and water；The ultraviolet lamp is mounted on hollow shell
Internal cavities in, for killing the germ in environment, inhibit the breeding of microorganism, while being also activated carbon fiber photocatalysis layer
Catalysis material provide energy；The Temperature Humidity Sensor, ethylene sensor are separately mounted to activated carbon fiber photocatalysis layer
Inner wall on, for periodically detect storeroom in ethylene concentration and humiture, and can by the ethylene concentration information measured without
Line is launched；The variable speed fan is mounted on the opening at the top of hollow shell, and is connect with STM32 modules, passes through
After STM32 modules carry out calculation processing, according to the current ethylene concentration situation of scheduled gradient concentration threshold decision, to variable-ratio
Fan and ultraviolet lamp are controlled, and adjust the air force of variable speed fan and the intensity of illumination of ultraviolet lamp, and concentration is believed
Breath is shown in OLED display screen, realizes the intelligent control reacted ethylene decomposition.
The activated carbon fiber photocatalysis layer is to make tungstic acid WO by oneself3, graphene oxide (GO) be raw material, metatitanic acid four
Butyl ester is titanium source, and acetic acid, polyethylene glycol are hydrolysis inhibitor and surfactant, and polyvinylpyrrolidone (PVP) is bridging agent,
It is load with activated carbon fiber (ACF), tungsten oxide/titanium dioxide-oxygen reduction of silver ion doping is prepared using sol-gal process
Graphite alkene (Ag-WO3/TiO2/ RGO) tri compound photocatalysis coating.
In the load of catalyst, the cleanliness factor of substrate is particularly important, therefore needs to clean activated carbon fiber (ACF)
Processing, specific processing method are as follows：
1) sequentially added in glass beaker the sodium hydroxide solution of 2~5% a concentration of 2~4mol/L, 2~5% acetone,
80~85% absolute ethyl alcohols, 8~10% liquid detergents form solution A；
2) compound concentration is the Dopamine hydrochloride B solution of 0.5~1.2mg/ml；
3) activated carbon fiber (ACF) is placed in 30~40min of supersound process in solution A；
4) the activity carbon fiber (ACF) after cleaning is put into deionized water and is cleaned by ultrasonic 3 times, every time 10 minutes；
5) by the activated carbon fiber cleaned up (ACF), it is inserted perpendicularly into 3~6h of immersion in B solution, is then blown with nitrogen
It is dry.
It is load with activated carbon fiber (ACF), tungsten oxide/titanium dioxide of silver ion doping is prepared using sol-gal process
Titanium-redox graphene (Ag-WO3/TiO2/ RGO) tri compound photocatalysis coating detailed process it is as follows：
1) butyl titanate and absolute ethyl alcohol are pressed 1:4~1:C solution is obtained after 6 volume ratio mixing, it is clear with ultrasonic wave
Wash 5~10min of device sonic oscillation；
2) silver nitrate powder of required quality is weighed with electronic balance so that the mass ratio of silver ion is in C solution
Between 0.05%~0.08%；
3) glacial acetic acid solution is added dropwise and adjusts pH value to 3~4 or so, subsequent continual ultrasonic vibrates 5~10min of C solution；
4) magnetic stirring apparatus (60 DEG C of heated constant temperature) is used to stir 30~40min of C solution, closing is aged more than for 24 hours, obtains
Stable, uniform, limpid bright yellowish orange colloidal sol；Colloidal sol is dried, 450 degree are thermally treated resulting in Ag-TiO2Powder；
5) the desired amount of Ag-TiO is taken2Powder (55~60%), WO3(33~38%) powder, 1~2% polyethylene, which adjoin, coughs up alkane
Ketone, 1~2% polyethylene glycol are scattered in absolute ethyl alcohol and form solution D, and by solution D ultrasonic disperse 2 hours, it is small to stir 4 at room temperature
When；
6) activated carbon fiber (ACF) is immersed in 30~50min in solution D, can be obtained work using drying, heat treatment
Property carbon fiber (ACF) load silver ion doping tungsten oxide/titanium dioxide-redox graphene (Ag-WO3/TiO2/RGO)
Tri compound photocatalysis coating.
The composite layer is combined by trilaminate material, and first layer is antibiotic layer, for killing the bacterium in gas,
The second layer is filter paper, for filtering air in small particle, third layer is active carbon filtration layer, in preliminary adsorbed gas
Ethylene.
The variable speed fan is configured with damping seal ring, and the damping seal ring is mainly used for reducing the vibrations of fan,
Reduce the effect of noise and sealing.
The variable speed fan is configured with protective cover.
The ultraviolet lamp is short wavelength UV lamp.
The preservation method of intelligent photocatalysis antibacterial preservation device for fruits and vegetables storeroom, specifically：First, in storeroom
Gas pass through outer filter net, filter out large particle, then small particle is removed by composite layer, and murder in gas
Bacterium, then through activated carbon fiber (ACF) photocatalysis layer, since activated carbon fiber has, aperture adsorption/desorption speed is fast, distribution
It is narrow, external surface area is big, adsorption capacity is big, the high feature of adsorption efficiency, can be by a large amount of ethylene absorption, activated carbon fiber in gas
The catalyst of upper load, can be by the ethylene decomposition being adsorbed on activated carbon fiber at carbon dioxide under the action of short wavelength UV lamp
And water, while after bacterium absorption short wave ultraviolet remaining in gas, causing DNA chain to be broken, causing the crosslinking of nucleic acid and albumen
The bioactivity of nucleic acid is killed in rupture, causes bacterial death；Meanwhile short wave ultraviolet can be by the oxygen in the light and air of short-wave band
Depressed conjunction generates ozone, and purified gas and ozone are discharged under the action of variable speed fan, and ozone can be killed further
The bacterium of storage environment achievees the purpose that anti-bacterial refreshing.
Compared with prior art, the present invention having the following advantages that and advantageous effect：
1, energy saving.Cold storing and fresh-keeping technology mainly keeps low temperature come fruit and vegetable preservation using refrigeration, and energy consumption is higher.And the design is sharp
Reach fresh-keeping purpose with chemical reaction decomposing ethylene, while device is arranged according to optimal threshold measured data and starts reaction
Optimal threshold reduces the unnecessary run time of device, reaches energy saving purpose.
2, emission reduction.The product of ultraviolet catalytic decomposing ethylene is carbon dioxide and water in the design, harmless, not dirty
Environment is contaminated, and product carbon dioxide plays an important role to preserving fruit and vegetable utilizing, there is certain utility value again, subtracted to realize
Arrange effect.
3, intelligence.Whether carried out for reaction given threshold to judge to react by threshold value experiment, while employing wireless transmits
Technology can be that device sets up host, Anroid terminals be passed data to by host and WIFI, convenient for user to ethylene in case
The observation of concentration, humiture.
4, safety.Ultraviolet lamp is mounted on the center of device, will not do harm to huamn body.
5, efficient, non-secondary pollution.State need not add any substance to the present apparatus in the process of running, so that it may with realization pair
The anti-bacterial refreshing of fruit, the ethylene gas after decomposition are decomposed into carbon dioxide and water, never will produce secondary pollution, and fill
Efficient sterilizing can be played by setting.
6, adaptable.Occupation area of equipment is small, from heavy and light, is very suitable for being arranged in compact, narrow field storage ring
Border acts on climacteric type fruit notable.The volume of the present apparatus is 0.01 cubic metre.Can around-the clock work,
Operation conditions is highly stable.
7, economical and practical, operating cost is low.The present apparatus does not have any mechanical action when operation, appoints so not having
What noise does not need special messenger's daily maintenance and corresponding management, and low energy consumption.
In short, the sterilization mode of fruits and vegetables generally uses chemical bactericide at present, it is easy to use, cheap, equipment is simple
It is single, bactericidal effect is good, work fast, be still maximally efficient sterilization means at present.But the use of chemical reagent meeting pair
Human body causes certain injury, toxic side effect.The method for removing ethylene is mainly physical absorption, oxidizing, photocatalysis
Oxidation.And the present apparatus is using physical absorption (outer filter net, composite layer, activated carbon fiber (ACF) photocatalysis layer), changes
Learn sterilization (containing antibiotic layer in composite layer, kill the bacterium in gas), photochemical catalytic oxidation (activated carbon fiber (ACF)),
The method that ozone sterilization (short wavelength UV lamp discharges ozone) combines, is realized fresh-keeping to the high-efficiency antimicrobial of the fruits and vegetables such as banana.
Description of the drawings
Fig. 1 is the stereogram of apparatus of the present invention.
Fig. 2 is the entirety sectional view of apparatus of the present invention.
Fig. 3 is the stereogram of variable speed fan.
Specific implementation mode
The present invention is further explained in the light of specific embodiments.
Shown in Fig. 1 to Fig. 3, the fresh-keeping dress of intelligent photocatalysis antibacterial for fruits and vegetables storeroom that the present embodiment is provided
Set, include hollow shell, short wavelength UV lamp 2, variable speed fan 3, STM32 modules 4, Temperature Humidity Sensor 5 and band whether there is or not
The ethylene sensor 6 of line emission function；Wherein, the hollow shell is three layers of tubular structure of inside and outside nested type, and outer layer was
Strainer 11, for filtering out large particle, wherein interbed is composite layer 12, for removing small particle and murdering in gas
Bacterium, internal layer is activated carbon fiber (ACF) photocatalysis layer 13, for a large amount of ethylene and the photograph in ultraviolet light in adsorbed gas
Penetrate it is lower by ethylene decomposition at carbon dioxide and water；The short wavelength UV lamp 2 is mounted among the internal cavities of hollow shell, is used for
The germ in environment is killed, inhibits the breeding of microorganism, while also being carried for the catalysis material of activated carbon fiber photocatalysis layer 13
For energy；The Temperature Humidity Sensor 5, ethylene sensor 6 are separately mounted on the inner wall of activated carbon fiber photocatalysis layer 13, are used
Ethylene concentration and humiture in storeroom are detected in timing, and the ethylene concentration information wireless transmission measured can be gone out；
The variable speed fan 3 is mounted on the opening at the top of hollow shell, and configured with damping seal ring (being not drawn into figure) and prevents
Shield 7, while the variable speed fan 3 is connect with STM32 modules 4, after receiving terminal receives concentration information, passes through STM32 modules 4
After carrying out calculation processing, according to the current ethylene concentration situation of scheduled gradient concentration threshold decision, to variable speed fan 3 and short
Wave ultraviolet lamp 2 is controlled, and adjusts the air force of variable speed fan 3 and the intensity of illumination of short wavelength UV lamp 2, and by concentration
Presentation of information realizes the intelligent control reacted ethylene decomposition in OLED display screen.
The activated carbon fiber photocatalysis layer 13 is to make tungstic acid WO by oneself3, graphene oxide (GO) be raw material, metatitanic acid
Four butyl esters are titanium source, and acetic acid, polyethylene glycol are hydrolysis inhibitor and surfactant, and polyvinylpyrrolidone (PVP) is connection
Agent is load with activated carbon fiber (ACF), tungsten oxide/titanium dioxide-reduction of silver ion doping is prepared using sol-gal process
Graphene oxide (Ag-WO3/TiO2/ RGO) tri compound photocatalysis coating.
In the load of catalyst, the cleanliness factor of substrate is particularly important, therefore needs to clean activated carbon fiber (ACF)
Processing is (attached：The purpose of cleaning is easy for catalyst load, so that catalyst is loaded more secured), specific processing method is as follows：
1) sequentially added in glass beaker the sodium hydroxide solution of 2~5% a concentration of 2~4mol/L, 2~5% acetone,
80~85% absolute ethyl alcohols, 8~10% liquid detergents form solution A；
2) compound concentration is the Dopamine hydrochloride B solution of 0.5~1.2mg/ml；
3) activated carbon fiber (ACF) is placed in 30~40min of supersound process in solution A；
4) the activity carbon fiber (ACF) after cleaning is put into deionized water and is cleaned by ultrasonic 3 times, every time 10 minutes；
5) by the activated carbon fiber cleaned up (ACF), it is inserted perpendicularly into 3~6h of immersion in B solution, is then blown with nitrogen
It is dry.
It is load with activated carbon fiber (ACF), tungsten oxide/titanium dioxide of silver ion doping is prepared using sol-gal process
Titanium-redox graphene (Ag-WO3/TiO2/ RGO) tri compound photocatalysis coating detailed process it is as follows：
1) butyl titanate and absolute ethyl alcohol are pressed 1:4~1:C solution is obtained after 6 volume ratio mixing, it is clear with ultrasonic wave
Wash 5~10min of device sonic oscillation；
2) silver nitrate powder of required quality is weighed with electronic balance so that the mass ratio of silver ion is in C solution
Between 0.05%~0.08%；
3) glacial acetic acid solution is added dropwise and adjusts pH value to 3~4 or so, subsequent continual ultrasonic vibrates 5~10min of C solution；
4) magnetic stirring apparatus (60 DEG C of heated constant temperature) is used to stir 30~40min of C solution, closing is aged more than for 24 hours, obtains
Stable, uniform, limpid bright yellowish orange colloidal sol；Colloidal sol is dried, 450 degree are thermally treated resulting in Ag-TiO2Powder；
5) the desired amount of Ag-TiO is taken2Powder (55~60%), WO3(33~38%) powder, 1~2% polyethylene, which adjoin, coughs up alkane
Ketone, 1~2% polyethylene glycol are scattered in absolute ethyl alcohol and form solution D, and by solution D ultrasonic disperse 2 hours, it is small to stir 4 at room temperature
When；
6) activated carbon fiber (ACF) is immersed in 30~50min in solution D, can be obtained work using drying, heat treatment
Property carbon fiber (ACF) load silver ion doping tungsten oxide/titanium dioxide-redox graphene (Ag-WO3/TiO2/RGO)
Tri compound photocatalysis coating.
The composite layer is combined by trilaminate material, and first layer is antibiotic layer, for killing the bacterium in gas,
The second layer is filter paper, for filtering air in small particle, third layer is active carbon filtration layer, in preliminary adsorbed gas
The organic matters such as ethylene.
The present invention using short wave ultraviolet technological guide fruits and vegetables improve disease resistance, generate functional component, delaying ripening aging,
The growth and breeding eliminated germ, inhibit pathogenic microorganism；There are three functions for the short wavelength UV lamp：
1, the germ in environment is killed, the breeding of microorganism is inhibited.
2, the catalysis material for device activated carbon fiber (ACF) photocatalysis layer provides energy, the oxidation of silver ion doping
Irradiation of the tri compound catalysis material of tungsten/titanium dioxide/redox graphene (Ag-WO3/TiO2/RGO) in ultraviolet light
Under, the ethylene and the ethylene in environment of degrading activity carbon fiber adsorption.
3, short wave ultraviolet, which can be combined the light of short-wave band with the oxygen in air, generates ozone, and ozone is discharged into environment
In, it can further kill the organic matters such as the ethylene that germ and banana in air release.
It is the operation principle of the above-mentioned intelligent photocatalysis antibacterial preservation device of the present embodiment below, it is specific as follows：
First, the gas in storeroom passes through outer filter net, filters out large particle, then is removed by composite layer small
Particulate matter, and the bacterium in gas is murdered, then through activated carbon fiber (ACF) photocatalysis layer, since activated carbon fiber has hole
The features such as diameter adsorption/desorption speed is fast, narrowly distributing, external surface area is big, adsorption capacity is big, and adsorption efficiency is high, can will be a large amount of in gas
Ethylene absorption, the catalyst loaded on activated carbon fiber can will be adsorbed on activated carbon fiber under the action of short wavelength UV lamp
On ethylene decomposition at carbon dioxide and water, while after bacterium remaining in gas absorbs short wave ultraviolet, cause DNA chain disconnected
It splits, the crosslinking of nucleic acid and albumen is caused to rupture, kill the bioactivity of nucleic acid, cause bacterial death；Meanwhile short wave ultraviolet can incite somebody to action
The light of short-wave band is combined with the oxygen in air generates ozone, and purified gas and ozone are under the action of variable speed fan
Discharge, the bacterium that ozone can further kill storage environment achieve the purpose that anti-bacterial refreshing.
Embodiment described above is only the preferred embodiments of the invention, and but not intended to limit the scope of the present invention, therefore
Change made by all shapes according to the present invention, principle, should all cover within the scope of the present invention.
Claims (9)
1. the intelligent photocatalysis antibacterial preservation device for fruits and vegetables storeroom, it is characterised in that：Include hollow shell, ultraviolet
Lamp, variable speed fan, STM32 modules, Temperature Humidity Sensor and the ethylene sensor with wireless transmitting function；Wherein, institute
It is three layers of tubular structure of inside and outside nested type to state hollow shell, and outer layer is filter screen, for filtering out large particle, wherein interbed
For composite layer, for removing small particle and murdering the bacterium in gas, internal layer is activated carbon fiber photocatalysis layer, is used
In adsorbed gas a large amount of ethylene and under the irradiation of ultraviolet light by ethylene decomposition at carbon dioxide and water；The ultraviolet lamp installation
In the internal cavities of hollow shell, for killing the germ in environment, inhibit the breeding of microorganism, while being also active carbon fiber
The catalysis material for tieing up photocatalysis layer provides energy；The Temperature Humidity Sensor, ethylene sensor are separately mounted to active carbon fiber
On the inner wall for tieing up photocatalysis layer, for periodically detecting ethylene concentration and humiture in storeroom, and the ethylene that can will be measured
Concentration information wireless transmission is gone out；The variable speed fan is mounted on the opening at the top of hollow shell, and connects with STM32 modules
It connects, after carrying out calculation processing by STM32 modules, according to the current ethylene concentration situation of scheduled gradient concentration threshold decision,
Variable speed fan and ultraviolet lamp are controlled, the air force of variable speed fan and the intensity of illumination of ultraviolet lamp are adjusted, and
Include realizing the intelligent control reacted ethylene decomposition in OLED display screen by concentration information.
2. the intelligent photocatalysis antibacterial preservation device according to claim 1 for fruits and vegetables storeroom, it is characterised in that：Institute
It is to make tungstic acid, graphene oxide by oneself as raw material to state activated carbon fiber photocatalysis layer, and butyl titanate is titanium source, acetic acid,
Polyethylene glycol is hydrolysis inhibitor and surfactant, and polyvinylpyrrolidone is bridging agent, is load with activated carbon fiber, adopts
The tri compound photocatalysis that tungsten oxide/titanium dioxide-redox graphene of silver ion doping is prepared with sol-gal process applies
Layer.
3. the intelligent photocatalysis antibacterial preservation device according to claim 2 for fruits and vegetables storeroom, it is characterised in that：
In the load of catalyst, the cleanliness factor of substrate is particularly important, therefore needs to start the cleaning processing activated carbon fiber, specific processing side
Method is as follows：
1) sequentially added in glass beaker the sodium hydroxide solution of 2~5% a concentration of 2~4mol/L, 2~5% acetone, 80~
85% absolute ethyl alcohol, 8~10% liquid detergents form solution A；
2) compound concentration is the Dopamine hydrochloride B solution of 0.5~1.2mg/ml；
3) activated carbon fiber is placed in 30~40min of supersound process in solution A；
4) the activity carbon fiber after cleaning is put into deionized water and is cleaned by ultrasonic 3 times, every time 10 minutes；
5) activated carbon fiber cleaned up is inserted perpendicularly into 3~6h of immersion in B solution, is then dried up with nitrogen.
4. the intelligent photocatalysis antibacterial preservation device according to claim 2 for fruits and vegetables storeroom, it is characterised in that：With
Activated carbon fiber is load, and tungsten oxide/titanium dioxide-redox graphene of silver ion doping is prepared using sol-gal process
Tri compound photocatalysis coating detailed process it is as follows：
1) butyl titanate and absolute ethyl alcohol are pressed 1:4~1:C solution is obtained after 6 volume ratio mixing, uses ultrasonic cleaner
5~10min of sonic oscillation；
2) silver nitrate powder of required quality is weighed with electronic balance so that in C solution the mass ratio of silver ion be 0.05%~
Between 0.08%；
3) glacial acetic acid solution is added dropwise and adjusts pH value to 3~4 or so, subsequent continual ultrasonic vibrates 5~10min of C solution；
4) magnetic stirrer 30~40min of C solution, closing is used to be aged more than for 24 hours, stablized, is uniform, is limpid bright
Yellowish orange colloidal sol；Colloidal sol is dried, 450 degree are thermally treated resulting in Ag-TiO2Powder；
5) 55~60% Ag-TiO is taken2Powder, 33~38%WO3Powder, 1~2% polyethylene adjoin pyrrolidone, 1~2% poly- second
Glycol, which is scattered in absolute ethyl alcohol, forms solution D, and solution D ultrasonic disperse 2 hours stirs 4 hours at room temperature；
6) activated carbon fiber is immersed in 30~50min in solution D, can be obtained activated carbon fiber using drying, heat treatment
The tri compound photocatalysis coating of tungsten oxide/titanium dioxide-redox graphene of the silver ion doping of load.
5. the intelligent photocatalysis antibacterial preservation device according to claim 1 for fruits and vegetables storeroom, it is characterised in that：Institute
It states composite layer to be combined by trilaminate material, first layer is antibiotic layer, and for killing the bacterium in gas, the second layer is filter
Paper, for filtering air in small particle, third layer is active carbon filtration layer, for the ethylene in preliminary adsorbed gas.
6. the intelligent photocatalysis antibacterial preservation device according to claim 1 for fruits and vegetables storeroom, it is characterised in that：Institute
State variable speed fan and be configured with damping seal ring, the damping seal ring is mainly used for reducing the vibrations of fan, reduce noise with
And the effect of sealing.
7. the intelligent photocatalysis antibacterial preservation device for fruits and vegetables storeroom according to claim 1 or 6, feature exist
In：The variable speed fan is configured with protective cover.
8. the intelligent photocatalysis antibacterial preservation device according to claim 1 for fruits and vegetables storeroom, it is characterised in that：Institute
It is short wavelength UV lamp to state ultraviolet lamp.
9. the intelligent photocatalysis antibacterial preservation device for fruits and vegetables storeroom described in claim 1 to 8 any one is fresh-keeping
Method, it is characterised in that：First, the gas in storeroom passes through outer filter net, filters out large particle, then by composite material
Layer removal small particle, and the bacterium in gas is murdered, then through activated carbon fiber photocatalysis layer, since activated carbon fiber has
Aperture adsorption/desorption speed is fast, narrowly distributing, external surface area is big, adsorption capacity is big, the high feature of adsorption efficiency, can will be big in gas
The ethylene absorption of amount, the catalyst loaded on activated carbon fiber can will be adsorbed on active carbon fiber under the action of short wavelength UV lamp
Ethylene decomposition in dimension causes DNA chain disconnected at carbon dioxide and water, while after bacterium absorption short wave ultraviolet remaining in gas
It splits, the crosslinking of nucleic acid and albumen is caused to rupture, kill the bioactivity of nucleic acid, cause bacterial death；Meanwhile short wave ultraviolet can incite somebody to action
The light of short-wave band is combined with the oxygen in air generates ozone, and purified gas and ozone are under the action of variable speed fan
Discharge, the bacterium that ozone can further kill storage environment achieve the purpose that anti-bacterial refreshing.
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