CN218869308U - Solid food sterilization device - Google Patents
Solid food sterilization device Download PDFInfo
- Publication number
- CN218869308U CN218869308U CN202221741014.5U CN202221741014U CN218869308U CN 218869308 U CN218869308 U CN 218869308U CN 202221741014 U CN202221741014 U CN 202221741014U CN 218869308 U CN218869308 U CN 218869308U
- Authority
- CN
- China
- Prior art keywords
- microwave
- box body
- sterilization
- ultraviolet germicidal
- electrodeless ultraviolet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000001954 sterilising effect Effects 0.000 title claims abstract description 124
- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 103
- 235000021055 solid food Nutrition 0.000 title claims description 27
- 239000010453 quartz Substances 0.000 claims abstract description 37
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 37
- 230000002070 germicidal effect Effects 0.000 claims abstract description 36
- 239000002184 metal Substances 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 238000000429 assembly Methods 0.000 claims description 3
- 230000000712 assembly Effects 0.000 claims description 3
- 235000013305 food Nutrition 0.000 abstract description 19
- 235000013351 cheese Nutrition 0.000 abstract description 16
- 238000011109 contamination Methods 0.000 abstract description 8
- 230000000813 microbial effect Effects 0.000 abstract description 7
- 244000052616 bacterial pathogen Species 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 15
- 241000894006 Bacteria Species 0.000 description 14
- 241000588724 Escherichia coli Species 0.000 description 14
- 244000005700 microbiome Species 0.000 description 11
- 241000191967 Staphylococcus aureus Species 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 238000002474 experimental method Methods 0.000 description 6
- 230000002147 killing effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 238000011282 treatment Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000001580 bacterial effect Effects 0.000 description 4
- 235000013365 dairy product Nutrition 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000000855 fermentation Methods 0.000 description 3
- 230000004151 fermentation Effects 0.000 description 3
- 244000053095 fungal pathogen Species 0.000 description 3
- 235000016709 nutrition Nutrition 0.000 description 3
- 230000035764 nutrition Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000007420 reactivation Effects 0.000 description 3
- 241000186779 Listeria monocytogenes Species 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000001963 growth medium Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 235000018102 proteins Nutrition 0.000 description 2
- 102000004169 proteins and genes Human genes 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000005341 toughened glass Substances 0.000 description 2
- 230000004543 DNA replication Effects 0.000 description 1
- 102000014171 Milk Proteins Human genes 0.000 description 1
- 108010011756 Milk Proteins Proteins 0.000 description 1
- 241000607142 Salmonella Species 0.000 description 1
- 239000005862 Whey Substances 0.000 description 1
- 102000007544 Whey Proteins Human genes 0.000 description 1
- 108010046377 Whey Proteins Proteins 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 238000005138 cryopreservation Methods 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003623 enhancer Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 244000000010 microbial pathogen Species 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000021239 milk protein Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000007523 nucleic acids Chemical group 0.000 description 1
- 235000008935 nutritious Nutrition 0.000 description 1
- 238000009928 pasteurization Methods 0.000 description 1
- 235000020185 raw untreated milk Nutrition 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000010076 replication Effects 0.000 description 1
- 230000001850 reproductive effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 1
- 235000013343 vitamin Nutrition 0.000 description 1
- 229940088594 vitamin Drugs 0.000 description 1
- 229930003231 vitamin Natural products 0.000 description 1
- 239000011782 vitamin Substances 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
Abstract
The utility model discloses a solid-state food sterilizing equipment, include: the sterilization box body comprises a box body and a sealing door; the microwave electrodeless ultraviolet germicidal lamp assembly comprises a microwave generator, a microwave electrodeless ultraviolet germicidal lamp unit and a microwave resonant cavity, wherein the microwave electrodeless ultraviolet germicidal lamp unit comprises two lamp holders and a microwave electrodeless ultraviolet germicidal lamp arranged between the lamp holders, the microwave electrodeless ultraviolet germicidal lamp is arranged in the microwave resonant cavity, the microwave resonant cavity comprises a quartz tube and a metal net, and the metal net is sleeved on the inner wall of the quartz tube; the interior of the sterilization box body is connected with the lamp holder through a planar flange, one end of the outer side of the sterilization box body is provided with a microwave generator, and the microwave generator is communicated with one end of the quartz tube through the planar flange; and the fan is arranged outside the sterilization box body and is communicated with the other end of the quartz tube through a planar flange. The utility model provides a risk that microbial contamination suppresses the growth of common food-borne pathogenic bacteria, improves the storage condition of cheese and prolongs shelf life.
Description
Technical Field
The utility model relates to a food sterilization technical field, concretely relates to solid-state food sterilizing equipment.
Background
With the economic development and the continuous improvement of health consciousness of people, the requirements on the food quality and the nutrient substances are higher and higher; not only is the food fresh, but the food is also required to retain its original organoleptic properties. The food contains rich nutrient substances such as protein, vitamins and the like, and the substances provide necessary nutrition for human bodies and good substrates for the growth and propagation of microorganisms, so the food is rotten and deteriorated after being placed for a long time. In food processing, microbial contamination is the leading cause of spoilage, and sterilization is an essential link in food processing. Sterilization, namely killing various harmful microorganisms brought by raw materials and introduced by operators and instruments in the production process or harmful microorganisms remained in the production environment; preventing microbial contamination, improving food quality and safety, and prolonging food shelf life.
Cheese is a solid or semi-solid dairy product prepared by adding (or not adding) fermentation strains, food nutrition enhancers and the like after milk protein is solidified or partially solidified under the action of a milk coagulant, discharging or not discharging whey (when protein curd after curdling is used as a raw material), and performing fermentation (or not fermentation) and the like. Highly nutritious cheese is therefore susceptible to contamination by various pathogenic microorganisms, such as listeria monocytogenes, escherichia coli, and salmonella, both during production and during transport. At present, the cheese sterilization mode mainly depends on pasteurization of raw milk and sterilization in the production process, but the risk of microbial contamination still exists. And the cheese needs to be preserved in a low-temperature refrigeration or freezing way to inhibit the growth of microorganisms so as to prolong the shelf life. Fresh cheese is generally preserved in a frozen package form, and cheese stored at 2-5 ℃ in cold storage within half a year. The cheese with longer shelf life needs to be frozen and stored at the temperature of 18 ℃ below zero, and is transferred to a cold storage for unfreezing before being eaten. However, cryopreservation is not an ideal solution because some psychrophiles such as Listeria monocytogenes can still propagate under low temperature conditions. The cheese is sterilized by adopting a microwave ultraviolet sterilization technology, so that the growth of common food-borne pathogenic bacteria can be effectively inhibited, and the cheese is sterilized and fresh-kept at the end of the cheese production process, so that the food safety is ensured, the storage condition of the cheese can be improved, and the shelf life of the cheese can be prolonged.
SUMMERY OF THE UTILITY MODEL
Based on this, the utility model aims at providing a solid-state food sterilizing equipment solves the risk of microbial contamination, restraines the growth of common food-borne pathogenic fungus, improves the storage condition and the extension shelf life of cheese.
In order to achieve the above object, the present invention provides a solid food sterilization device, including:
the sterilization box body comprises a box body and a sealing door;
the microwave electrodeless ultraviolet germicidal lamp assembly comprises a microwave generator, a microwave electrodeless ultraviolet germicidal lamp unit and a microwave resonant cavity, wherein the microwave electrodeless ultraviolet germicidal lamp unit comprises two lamp holders and a microwave electrodeless ultraviolet germicidal lamp arranged between the two lamp holders, the microwave electrodeless ultraviolet germicidal lamp is arranged in the microwave resonant cavity, the microwave resonant cavity comprises a quartz tube and a metal net, and the metal net is sleeved on the inner wall of the quartz tube; the interior of the sterilization box body is connected with the lamp holder through a planar flange, one end of the outer side of the sterilization box body is provided with a microwave generator, and the microwave generator is communicated with one end of the quartz tube through the planar flange;
and the fan is arranged outside the sterilization box body and is communicated with the other end of the quartz tube through a plane flange.
Furthermore, 2-5 microwave electrodeless ultraviolet germicidal lamps are arranged in the microwave resonant cavity.
Furthermore, the interior of the sterilization box body is provided with at least 2 groups of microwave electrodeless ultraviolet sterilization lamp assemblies, and each group is correspondingly provided with a fan.
Further, a controller is arranged at the top end of the sterilization box body, a microwave generator high-voltage power supply is arranged in the controller, and the microwave generator high-voltage power supply is electrically connected with an external power supply.
Further, a start-stop key and a sterilization time timer are arranged on the controller.
Furthermore, the side wall of the inner part of the sterilization box body is also provided with at least one group of protruding parts and quartz supporting plates, and the quartz supporting plates are arranged on the protruding parts and used for supporting the quartz supporting plates.
Further, the top wall, the side wall and the bottom wall in the sterilization box body are provided with reflecting plates.
Furthermore, a safety lock and an observation window are arranged on the sealing door.
When the device is used for sterilizing solid or semisolid food, the device is firstly switched on, a switch button on a controller panel starts a microwave generator and a matched microwave electrodeless ultraviolet sterilizing lamp, when the microwave generator operates, electric energy is converted into 2450MHz microwave, the microwave is transmitted to a microwave resonance cavity through a waveguide, the microwave is intensively reflected to a microwave electrodeless ultraviolet lamp through the reflection action of a metal net in the cavity, a luminescent substance in the microwave electrodeless ultraviolet lamp tube emits 254nm ultraviolet rays, and then the ultraviolet rays are transmitted into a sterilizing box body through the transmission of a quartz tube, and a reflecting plate on the inner wall of the sterilizing box body performs diffuse reflection on the ultraviolet rays, so that the sterilizing box body is filled with the ultraviolet rays. The irradiation of ultraviolet rays to microorganisms can damage and change the tissue structure (DNA nucleic acid) of the microorganisms, so that the nucleic acid structure is mutated, the organism loses the replication and reproductive capacity, and the function is damaged, thereby achieving the aim of sterilization. Meanwhile, the fan inputs outside air into the quartz tube to realize contact heat exchange of the air, so that the temperature of the microwave electrodeless ultraviolet germicidal lamp is reduced, the microwave ultraviolet lamp can be maintained in the optimal sterilization working state, and then the heat exchanged gas is transmitted to the radiating hole of the microwave generator through the other end of the quartz tube to be discharged.
The utility model discloses above-mentioned one or more technical scheme have following technological effect:
the utility model provides a solid-state food sterilizing equipment, include: the sterilization box body comprises a box body and a sealing door; the microwave electrodeless ultraviolet germicidal lamp assembly comprises a microwave generator, a microwave electrodeless ultraviolet germicidal lamp unit and a microwave resonant cavity, wherein the microwave electrodeless ultraviolet germicidal lamp unit comprises two lamp holders and a microwave electrodeless ultraviolet germicidal lamp arranged between the two lamp holders, the microwave electrodeless ultraviolet germicidal lamp is arranged in the microwave resonant cavity, the microwave resonant cavity comprises a quartz tube and a metal net, and the metal net is sleeved on the inner wall of the quartz tube; the interior of the sterilization box body is connected with the lamp holder through a planar flange, one end of the outer side of the sterilization box body is provided with a microwave generator, and the microwave generator is communicated with one end of the quartz tube through the planar flange; and the fan is arranged outside the sterilization box body and is communicated with the other end of the quartz tube through a plane flange. The utility model provides a microbial contamination's risk, restrain the growth of common food-borne pathogenic fungus, improve the storage condition of cheese and prolong shelf life. The solid food sterilization device provided by the utility model has the advantages of simple sterilization process, economy and safety; the sterilization effect is good, and the environment is protected; almost all microorganisms are killed; the sterilization effect is only limited in the irradiation process, and no later sterilization effect exists; the method is carried out at normal temperature, does not need to add chemical reagents, and has no residue problem.
Drawings
FIG. 1 is a schematic structural view of a solid food sterilization device;
FIG. 2 is a schematic view of an opening structure of a sealing door of the solid food sterilization device;
FIG. 3 is a schematic view of the installation and connection of a microwave generator of the solid food sterilization device;
FIG. 4 is a schematic view showing the installation relationship of the microwave electrodeless ultraviolet germicidal lamp assembly of the solid food germicidal device;
FIG. 5 is a schematic diagram showing the connection between the microwave resonant cavity and the microwave electrodeless ultraviolet germicidal lamp;
in the figure: 1. sterilizing the box body; 2. a fan; 3. a microwave generator; 4. a quartz tube; 5. a controller; 6. a metal mesh; 7. a quartz pallet; 8. a protrusion portion; 9. microwave electrodeless ultraviolet germicidal lamps; 10. and (4) sealing the door.
Detailed Description
The present invention will be described in detail with reference to the following examples and fig. 1 to 5, and the advantages and various effects of the present invention will be more clearly apparent from the description. It will be understood by those skilled in the art that the present embodiments and examples are illustrative of the present invention, and are not to be construed as limiting the invention.
An embodiment of the utility model provides a solid-state food sterilizing equipment, include:
the sterilization box body comprises a box body and a sealing door;
the microwave electrodeless ultraviolet germicidal lamp assembly comprises a microwave generator, a microwave electrodeless ultraviolet germicidal lamp unit and a microwave resonant cavity, wherein the microwave electrodeless ultraviolet germicidal lamp unit comprises two lamp holders and a microwave electrodeless ultraviolet germicidal lamp arranged between the two lamp holders, the microwave electrodeless ultraviolet germicidal lamp is arranged in the microwave resonant cavity, the microwave resonant cavity comprises a quartz tube and a metal net, and the metal net is sleeved on the inner wall of the quartz tube; the interior of the sterilization box body is connected with the lamp holder through a planar flange, one end of the outer side of the sterilization box body is provided with a microwave generator, and the microwave generator is communicated with one end of the quartz tube through the planar flange;
and the fan is arranged outside the sterilization box body and is communicated with the other end of the quartz tube through a plane flange. The fan inputs outside air into the quartz tube to realize contact heat exchange of the air, so that the temperature of the microwave electrodeless ultraviolet germicidal lamp is reduced, the microwave ultraviolet lamp can be maintained in the optimal sterilization working state, and then the gas after heat exchange is transmitted to the radiating hole of the microwave generator through the other end of the quartz tube to be discharged.
Specifically, 4 microwave electrodeless ultraviolet germicidal lamps are arranged in the microwave resonant cavity.
Specifically, 2 groups of microwave electrodeless ultraviolet germicidal lamp assemblies are arranged in the sterilizing box body, and each group is correspondingly provided with a fan. In addition, according to the sterilization requirements of different types of solid dairy products, the two groups of microwave electrodeless ultraviolet sterilization lamps can work simultaneously and also can work independently.
Specifically, the top end of the sterilization box body is provided with a controller, a special high-voltage power supply for the microwave generator is arranged in the controller, and the special high-voltage power supply for the microwave generator is electrically connected with an external power supply.
Specifically, the controller is provided with a start-stop key and a sterilization time timer.
Specifically, the side wall in the sterilization box body is further provided with at least one group of protruding parts and a quartz supporting plate, and the quartz supporting plate is arranged on the protruding parts and supports the quartz supporting plate. When placing the solid state dairy products of different grade type, can be with the quartz supporting plate block in different bellyings to the realization is through the altitude mixture control of irradiation distance in order to obtain the purpose of disinfecting of best high nutrition and high safety guarantee.
Specifically, the top wall, the side wall and the bottom wall in the sterilization box body are provided with reflecting plates. The reflector has good ultraviolet diffuse reflection performance, and can fully reflect ultraviolet rays emitted by the microwave electrodeless ultraviolet sterilization lamp tube on the upper part of the sterilization box body, so that all surfaces of the solid dairy product to be sterilized can be irradiated by the ultraviolet rays for sterilization.
Specifically, a safety lock and an observation window are arranged on the sealing door. The observation window is toughened glass, so guarantees that toughened glass can see the box inside condition that disinfects, can prevent again that the ultraviolet ray from letting out, and the setting up of safety lock prevents that the sealing door is unexpected to be opened.
In order to verify the sterilization efficiency of the solid food sterilization device, a common ultraviolet sterilization device is adopted in a contrast test.
Firstly, an escherichia coli sterilization test is carried out, and the bacterial liquid is initially 10 8 In CFU/mL, the set irradiation distance is 3cm, the ultraviolet irradiation time is respectively selected to be 0s, 2s, 4s, 6s, 8s and 10s for sterilization treatment, the influence of common ultraviolet on the sterilization effect of escherichia coli is examined (three times in parallel), and the experimental results are shown in Table 1. Coli sterilization experiments (five times in parallel) were performed using the solid food sterilization apparatus under the same conditions, and the results of the experiments are shown in table 2.
TABLE 1 relationship between irradiation time of a general UV sterilizer and sterilizing effect of Escherichia coli
TABLE 2 relationship between irradiation time and Escherichia coli sterilizing effect of the solid food sterilizer
As can be seen from the above test results, the number of remaining viable bacteria of Escherichia coli after both ultraviolet ray treatments decreased with the lapse of irradiation time, and the sterilizing effect was enhanced because the dose of irradiation increased with the lapse of irradiation time. Compared with the common ultraviolet and microwave electrodeless ultraviolet sterilization effects, the solid food sterilization device can reduce the number of viable bacteria of the residual escherichia coli by 7 orders of magnitude by irradiating the solid food for 2 seconds by the microwave electrodeless ultraviolet; and the common ultraviolet irradiation for 2s can only be reduced by 3 orders of magnitude. After 6s of irradiation with the sterilization device, the colony count had decreased to single digit. The sterilization effect of the microwave electrodeless ultraviolet in the device on the escherichia coli is obviously superior to that of common ultraviolet, and the difference is obvious; the device has the capability of killing escherichia coli in a short time.
In addition, the solid food sterilization device and the common ultraviolet sterilization device are used for carrying out staphylococcus aureus sterilization tests, and the initial concentration of the bacterial liquid is 10 8 In the case of CFU/mL, the irradiation distance was set at 3cm, and the ultraviolet irradiation time was selected to be 0s, 2s, 4s, 6s, 8s, and 10s, respectively, for sterilization treatment, and the influence of the two types of ultraviolet sterilization apparatuses on the sterilization effect of Staphylococcus aureus was examined (five tests in parallel). The experimental results are shown in tables 3 and 4:
TABLE 3 relationship between irradiation time of conventional UV sterilizer and Staphylococcus aureus sterilizing effect
TABLE 4 relationship between irradiation time and Staphylococcus aureus sterilizing effect of the solid food sterilizing device
The result of the staphylococcus aureus sterilization test also shows that the sterilization effect of the device is obviously superior to that of a common ultraviolet sterilization device, and the difference is very obvious. The irradiation for 10s by using the device basically realizes the killing of the staphylococcus aureus, which is enough to show that the device has the capability of killing the staphylococcus aureus in a short time.
In consideration of the fact that most of the solid food sterilization devices are required to sterilize mixed bacteria in food, the solid food sterilization device is used for performing a mixed bacteria sterilization test, and the mixed bacteria are uniformly mixed by escherichia coli and staphylococcus aureus 1:1. The initial concentrations of the two bacterial liquids are both 10 8 In CFU/mL, the irradiation distance was set at 3cm, and the ultraviolet irradiation time was selected to be 0s, 2s, 4s, 6s, 8s, 10s and 12s, respectively, for sterilization treatment, and the effect of the apparatus on mixed bacteria was examined (four experiments in parallel). The results of the experiment are shown in table 5:
TABLE 5 relationship between irradiation time and mixed bacteria sterilizing effect of the solid food sterilizing device
As can be seen from Table 5, the present sterilization apparatus also has a good sterilization capability against mixed bacteria. After the irradiation time of 2s, the number of viable bacteria of the residual mixed bacteria is reduced to 24, and is reduced by 7 orders of magnitude. When irradiatedThe total killing effect can be achieved with a time of 12 s. In order to examine the light revival condition of the microorganism sterilized by the sterilization device, escherichia coli is selected as a representative test strain, and the initial concentration of the bacterial liquid is 10 7 CFU/mL, when the irradiation time is 2s and 5s, respectively, the light revival experiment is carried out with the light revival time of 0h (control), 0.5h, 1h, 2h, 3h, 4h and 5 h. The results of the experiment are shown in table 6:
TABLE 6 relationship between light revival time and number of bacteria revival
As can be seen from Table 6, escherichia coli irradiated by 2s of microwave electrodeless ultraviolet rays generates a light reactivation effect after being placed in the sun. The number of the live bacteria is 23 after the culture medium is placed for 0.5h, and the number of the live bacteria is increased to 1200 after the culture medium is placed for 5h, namely, the number of the escherichia coli is increased to different degrees along with the extension of the light revival time. In contrast, when the ultraviolet sterilization irradiation time is prolonged to 5s, no obvious light reactivation phenomenon exists after the glass is placed in the sun for 5 h. Namely, the ultraviolet irradiation sterilization treatment time is prolonged, and the number of the Escherichia coli increased is reduced by the light reactivation. This is because the longer the ultraviolet germicidal irradiation time, the larger the ultraviolet irradiation dose, and the more the DNA replication structure of the bacteria is destroyed, the lower the revival ability of the microorganism is. Therefore, the light revival phenomenon of the microorganism can be avoided by prolonging the ultraviolet irradiation time in the sterilization treatment.
To sum up, the utility model provides a microbial contamination's risk, restrain the growth of common food-borne pathogenic fungus, improve the storage condition of cheese and prolong the shelf life. The solid food sterilization device provided by the utility model has the advantages of simple sterilization process, economy and safety; the sterilization effect is good, and the environment is protected; almost has killing effect on all microorganisms; the sterilization effect is only limited in the irradiation process, and no later sterilization effect exists; the method is carried out at normal temperature, does not need to add chemical reagents, and has no residue problem.
Claims (8)
1. A solid food sterilization device, comprising:
the sterilization box body comprises a box body and a sealing door;
the microwave electrodeless ultraviolet germicidal lamp assembly comprises a microwave generator, a microwave electrodeless ultraviolet germicidal lamp unit and a microwave resonant cavity, wherein the microwave electrodeless ultraviolet germicidal lamp unit comprises two lamp holders and a microwave electrodeless ultraviolet germicidal lamp arranged between the two lamp holders, the microwave electrodeless ultraviolet germicidal lamp is arranged in the microwave resonant cavity, the microwave resonant cavity comprises a quartz tube and a metal net, and the metal net is sleeved on the inner wall of the quartz tube; the interior of the sterilization box body is connected with the lamp holder through a planar flange, one end of the outer side of the sterilization box body is provided with a microwave generator, and the microwave generator is communicated with one end of the quartz tube through the planar flange;
and the fan is arranged outside the sterilization box body and is communicated with the other end of the quartz tube through a planar flange.
2. The solid food sterilization device of claim 1, wherein: 2-5 microwave electrodeless ultraviolet germicidal lamps are arranged in the microwave resonant cavity.
3. The solid food sterilization device according to claim 1, wherein: at least 2 groups of microwave electrodeless ultraviolet germicidal lamp assemblies are arranged in the sterilizing box body, and each group is correspondingly provided with a fan.
4. The solid food sterilization device of claim 1, wherein: the top end of the sterilization box body is provided with a controller, a microwave generator high-voltage power supply is arranged in the controller, and the microwave generator high-voltage power supply is electrically connected with an external power supply.
5. The solid food sterilization device according to claim 4, wherein: the controller is provided with a start-stop key and a sterilization time timer.
6. The solid food sterilization device according to claim 1, wherein at least one set of protrusions and quartz supporting plates are further arranged on the inner side wall of the sterilization box body, and the quartz supporting plates are arranged on the protrusions and support the quartz supporting plates.
7. The solid food sterilization device of claim 1, wherein: the top wall, the side wall and the bottom wall in the sterilization box body are provided with light reflecting plates.
8. The solid food sterilization device of claim 1, wherein: the sealing door is provided with a safety lock and an observation window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221741014.5U CN218869308U (en) | 2022-07-06 | 2022-07-06 | Solid food sterilization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221741014.5U CN218869308U (en) | 2022-07-06 | 2022-07-06 | Solid food sterilization device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218869308U true CN218869308U (en) | 2023-04-18 |
Family
ID=85940352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221741014.5U Active CN218869308U (en) | 2022-07-06 | 2022-07-06 | Solid food sterilization device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218869308U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115005282A (en) * | 2022-07-06 | 2022-09-06 | 内蒙古大学 | Solid food sterilization device and application thereof |
-
2022
- 2022-07-06 CN CN202221741014.5U patent/CN218869308U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115005282A (en) * | 2022-07-06 | 2022-09-06 | 内蒙古大学 | Solid food sterilization device and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3672931B2 (en) | High-temperature / ultra-high pressure sterilization of low acid foods | |
| US9592313B2 (en) | Microwave disinfection and sterilization | |
| Najdovski et al. | The killing activity of microwaves on some non-sporogenic and sporogenic medically important bacterial strains | |
| CN112586555A (en) | Cold sterilization and preservation technical method for fresh-cut fruits and vegetables by cooperation of low-temperature plasma activated water and DBD | |
| CN111787956A (en) | Photo-biological conditioning device | |
| CN218869308U (en) | Solid food sterilization device | |
| CN102316904A (en) | Device and method for sterilizing liquid nitrogen by ultraviolet radiation | |
| CN105230770A (en) | Fresh keeping storehouse with ultraviolet rays | |
| Mathavi et al. | New trends in food processing | |
| CN105594853A (en) | Application of LED blue light in dairy product production | |
| CN109864237A (en) | The cooked progress low temperature sterilization Preservation Treatment Processes and apparatus of a kind of pair of meat | |
| KR101733060B1 (en) | Sterilization method of milk using pulsed electric field and low temperature long time, and sterilized milk therefrom | |
| CN108308262A (en) | A kind of method for disinfection and sterilizing unit of citrus can | |
| CN115005282A (en) | Solid food sterilization device and application thereof | |
| Wang et al. | Study on the thawing characteristics of beef in ultrasound combined with plasma-activated water | |
| US6024999A (en) | Process for producing pasteurized liquid egg products | |
| CN114259010A (en) | Microwave sterilizing device | |
| Kasih et al. | Bacterial inactivation by using non thermal argon plasma jet and its application study for non thermal raw milk processing | |
| CN214283095U (en) | Quick discharging device convenient to sterilization machine | |
| CN209965160U (en) | Sterilization fresh-keeping cabinet | |
| CN1927069A (en) | Fresh keeping processing method for whole egg liquid | |
| CN103719999B (en) | A kind of method of fruit juice sterilization processing | |
| Di Benedetto et al. | Alternative non thermal approaches: microwave, ultrasound, pulsed electric fields, irradiation | |
| CN109619447B (en) | Egg liquid and microwave sterilization method thereof | |
| CN216601490U (en) | Goat milk non-thermal sterilization production device adopting low-temperature plasma treatment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |