CN209965160U - Sterilization fresh-keeping cabinet - Google Patents
Sterilization fresh-keeping cabinet Download PDFInfo
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- CN209965160U CN209965160U CN201822208604.1U CN201822208604U CN209965160U CN 209965160 U CN209965160 U CN 209965160U CN 201822208604 U CN201822208604 U CN 201822208604U CN 209965160 U CN209965160 U CN 209965160U
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Abstract
The utility model discloses a fresh-keeping cabinet disinfects belongs to the disinfection field. The sterilization and preservation cabinet comprises a cabinet body, a sterilization light source and a power supply, wherein the sterilization light source and the power supply are arranged on the inner side of the cabinet body through a sterilization light source bracket, the cabinet body is a square or trapezoidal cube, the inner wall of the cabinet body comprises a top surface and a plurality of side surfaces, and the sterilization light source is uniformly distributed on the top surface and/or the side surfaces of the cabinet body, so that the problem that the quality of a product is influenced because sterilization equipment in the prior art destroys the product to be sterilized at the same time of sterilization can; the problem of peculiar smell generated by irradiation in the sterilization process can be avoided; can avoid the distortion effect of long-time ultraviolet irradiation on people and the serious influence on consumers. The sterilization and preservation cabinet has high sterilization efficiency, the sterilization efficiency of the working table top is up to more than 99.9%, the sterilization efficiency of the food with a relatively smooth surface is up to more than 99%, and the sterilization efficiency of the food with a rough surface is up to more than 90%.
Description
Technical Field
The utility model relates to a fresh-keeping cabinet disinfects belongs to the disinfection field.
Background
The excessive microorganism is the main reason of unqualified sanitary indexes of various foods, medicines, cosmetics and the like. The microbial contamination which causes the excessive microorganisms is wide in source, can be derived from raw materials, can be derived from the raw material processing process, can be derived from packaging machinery, can be derived from the ambient air which is contacted in a processing chain, and can also be derived from the processes of storage, sale and sale.
For example, foods, which are usually in a circulating environment during storage, sale and sale, especially foods such as refrigerated meat products and marinated products, are rich in protein content, and therefore, microorganisms are easily generated in the circulating environment, and various harmful bacteria are easily bred, so that the food preservation and sterilization method has great significance for the preservation and sterilization of the foods during storage, transportation, sale and sale.
To date, various non-high temperature sterilization techniques and apparatuses have been developed at home and abroad, which rely on the abundance of physical methods, such as optical sterilization.
In optical sterilization, ultraviolet radiation sterilization is common, and the sterilization mechanism is that ozone and air negative ions (in a food preservation environment) with certain concentration are generated, so that the polluted bacteria cells in food are attacked and killed, but at the same time, the ozone can also damage the protein and lipid of the food, and free radicals generated by radiation can cause lipid peroxidation and other chemical changes, so that the quality of meat products is influenced; the degradation of amino acid by irradiation can cause the meat product to generate special smell; irradiation can also cause degradation of certain vitamins in the meat product and changes in color, resulting in unpleasant gases; moreover, the large dose of ultraviolet rays has a distortion effect on the operator, and the psychology of the consumer is also influenced.
Therefore, it is urgently required to design a new sterilization apparatus to meet the following requirements: 1) the sterilization efficiency is high; 2) the original flavor and sensory properties of the food are kept; 3) the equipment cost and the maintenance cost are low; 4) the operability is strong.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a sterilization fresh-keeping cabinet, which comprises a cabinet body and a sterilization light source arranged at the inner side of the cabinet body through a sterilization light source bracket, and can solve the problem that the sterilization equipment in the prior art destroys the product to be sterilized and affects the quality of the product; the problem of peculiar smell generated by irradiation in the sterilization process can be avoided; can avoid the distortion effect of long-time ultraviolet irradiation on people and the serious influence on consumers.
The technical scheme of the utility model as follows:
the utility model provides a sterilization fresh-keeping cabinet, which comprises a cabinet body, a sterilization light source and a power supply, wherein the sterilization light source and the power supply are arranged on the inner side of the cabinet body through a sterilization light source bracket; the cabinet body is a cube or a trapezoidal cube; the inner wall of the cabinet body comprises a top surface and a plurality of side surfaces; the sterilizing light sources are uniformly distributed on the top surface and/or the side surface of the cabinet body.
In an embodiment of the present invention, the sterilization light source is a blue light lamp.
In an embodiment of the present invention, the blue light lamp can emit blue light with a wavelength of 400-480 nm.
In an embodiment of the present invention, the blue light lamp may have a tubular shape.
In an embodiment of the present invention, the blue light lamp may be a sphere.
In an embodiment of the present invention, when the blue light lamps are tubular, 50% or more of the blue light lamps are parallel to each other.
In an embodiment of the present invention, when the blue light lamps are spherical, the connecting lines between 50% and more of the blue light lamps are parallel to each other.
In an embodiment of the present invention, the blue light lamp includes an Led lamp.
The utility model discloses an in an embodiment, germicidal light source support be the support that can stretch out and draw back, can control germicidal light source and wait to disinfect the distance of some within 90 cm.
In one embodiment of the present invention, the germicidal light source fixture may be any one of the patent documents disclosed in publication nos. CN207896256U, CN207246924U, CN201251119Y, CN201204201Y, CN102052644B, CN201599742U, CN201599743U, CN201885182U, CN102214770B, CN202032509U, CN202048529U, or CN 202733824U.
In an embodiment of the present invention, the sterilization and preservation cabinet further comprises a power connection line.
In an embodiment of the present invention, the sterilizing light source is connected to the power source through a power connection line.
The utility model has the advantages that:
(1) the sterilization and preservation cabinet of the utility model is provided with the sterilization light source in the refrigerator body, so that the whole sterilization and preservation cabinet can be suitable for sterilization and refrigeration of a plurality of links of storage, transportation, sale and the like of food;
(2) the sterilization fresh-keeping cabinet of the utility model has high sterilization efficiency, the sterilization efficiency for the working table top is up to more than 99.9 percent, the sterilization efficiency for the food with relatively smooth surface is up to more than 99 percent, and the sterilization efficiency for the food with rough surface is up to more than 90 percent;
(2) the sterilization light sources of the sterilization fresh-keeping cabinet are uniformly arranged at the inner side of the cabinet body, at least 50% of the blue light lamp tubes are parallel in pairs, or at least 50% of the blue light LED lamp beads are arranged in parallel with each other, the sterilization light sources in the sterilization fresh-keeping cabinet body are uniformly irradiated in the sterilization light source arrangement mode, the sterilization effect of each part is relatively balanced, and the overall sterilization effect of the sterilization fresh-keeping cabinet is better;
(3) the sterilization light source adopted by the sterilization fresh-keeping cabinet of the utility model is blue light, the blue light can excite the porphyrin substances in free state in bacteria to generate peroxide, and the cell membrane mechanism is damaged, so that the bacteria die, the inherent sensory characteristics of the product can not be influenced in the sterilization process, and unpleasant gas can not be generated;
(4) the utility model discloses a fresh-keeping cabinet disinfects passes through the freezer cabinet body, the light source that disinfects, the light source support that disinfects constitutes, and overall structure is simple, and the security is good, and maneuverability is strong, can not produce healthy problems such as distortion to the operator, and accessible switch controls.
Drawings
Fig. 1 is a front view of an embodiment of the sterilization and preservation cabinet of the present invention.
Fig. 2 is a left side view of an embodiment of the sterilization and preservation cabinet of the present invention.
Fig. 3 is a top view of an embodiment of the sterilization and preservation cabinet of the present invention.
Fig. 4 is a schematic structural diagram of an embodiment of the sterilization fresh-keeping cabinet of the present invention.
Fig. 5 is a schematic view of the sterilization light source bracket structure of an embodiment of the sterilization fresh-keeping cabinet body of the utility model.
Fig. 6 shows different arrangement modes of the sterilization light sources inside the cabinet body of the sterilization and preservation cabinet in embodiment 2.
In fig. 1-6, 1 is a cabinet, 2 is a germicidal light source support, 3 is a germicidal light source, 4 is a power supply, 5 is a top surface, 6 is a side surface, 7 is a power supply connecting wire, 8 is a mounting plate, 9 is a mounting frame, 10 is a fixing ring sleeve, 11 is a bolt and 12 is a telescopic rod.
Detailed Description
The following is a detailed description of the present invention:
as shown in fig. 1-5, the sterilization and preservation cabinet of the present invention comprises a cabinet body 1, a sterilization light source 3 and a power supply 4, wherein the sterilization light source 3 is arranged at the inner side of the cabinet body through a sterilization light source bracket 2; the cabinet body 1 is a cube or a trapezoid cube; the inner wall of the cabinet body 1 comprises a top surface 5 and a plurality of side surfaces 6; the sterilizing light sources are uniformly distributed on the top surface 5 and/or the side surface 6 of the cabinet body.
Further preferably, the germicidal light source 3 is a blue light lamp.
Preferably, the blue light lamp can emit blue light with a wavelength of 400-470 nm.
As a further preference, the blue light lamp may be tubular or spherical.
As a further preferred, when the blue light lamps are tubular, 50% or more of the blue light lamps are parallel to each other.
More preferably, when the blue light lamps are spherical, 50% or more of the connecting lines between the blue light lamps are parallel to each other.
As a further preference, the blue light lamp comprises an Led lamp.
More preferably, the germicidal light source holder 3 is a telescopic holder, and the distance between the germicidal light source and the point to be sterilized can be controlled within 90 cm.
Further preferably, the germicidal light source fixture (3) may be any one of the patent documents disclosed in publication nos. CN207896256U, CN207246924U, CN201251119Y, CN201204201Y, CN102052644B, CN201599742U, CN201599743U, CN201885182U, CN102214770B, CN202032509U, CN202048529U or CN 202733824U.
As a further preferred option, the sterilizing and refreshing cabinet further comprises a power connection wire 7.
Further preferably, the germicidal light source 3 is connected to the power source 4 via a power connection 7.
The invention is further illustrated below with reference to specific embodiments:
the blue light lamp used in the following embodiments is Led lamp, and the germicidal light source holder used is described in patent document with publication number CN207896256U, and includes a mounting plate 8, a mounting frame 9, a fixing ring 10, a bolt 11, and a telescopic rod 12.
Example 1
The fresh-keeping sterilizing cabinet in the embodiment is assembled according to the following requirements:
a sterilization fresh-keeping cabinet comprises a refrigerating cabinet body, a sterilization light source and a sterilization light source bracket; the length of the refrigerator body is 2.5 meters, the width is 0.8 meter, the height is 1.2 meters, the refrigeration temperature is 6 +/-2 ℃, and the cold air speed is 5L/min; the sterilizing light source is a blue Led lamp tube; 4 blue-light Led lamp tubes (with the wavelength of 420 +/-10 nm) with the length of 50cm are fixed on the sterilizing light source support through the lamp cap, then the sterilizing light source support is fixed on the top surface, the blue Led lamp tubes are arranged in a straight line, so that the irradiation aiming at the table top and the environment space is relatively uniform, and the distance from the Led lamp tubes to the table top can be controlled to be about 80cm by adjusting the sterilizing light source.
The sterilization fresh-keeping cabinet is used as the equipment of an experimental group, a common fresh-keeping cabinet is used as a contrast, and the refrigeration and fresh-keeping effects of the cooked food sold in the market are compared:
(1) 10 kinds of fresh cooked foods (chicken wings, duck necks, beef, duck intestines, marinated eggs, lotus root slices, bean curd sheets, kelp, vegetables and marinated peanuts) are purchased from a supermarket, 10 parts of each sample are respectively paved on a tray, the control group is 5 parts of each sample, the experimental groups are also 5 parts of each sample, the samples are packaged by sealing films, the two sets of equipment are started, and the sample trays are placed on the table top of a fresh cabinet;
(2) samples were taken at 0h, 6h, 12h, 18h, and 24h, respectively, for the following analyses: A. and counting the pollution bacteria, and calculating the sterilization rate aiming at the pollution bacteria by referring to the national standard GB4789.2-2010 food microbiology test. B. And sensory evaluation, referring to GB T22210-. C. The number of milliequivalents of peroxide oxygen per kilogram of fat, the PV value, was determined. The sampling method is described in GB/T5009.44-1996.
As shown in table 1, the results indicate that the contaminated bacterial flora in the fresh-keeping cabinets of the control group grew slowly, because the growth rate was only reduced by the microorganisms at low temperature, and no bactericidal effect was observed; after the experiment group uses the traditional Chinese medicine sterilizing and fresh-keeping cabinet, the effect of killing the polluted microorganisms is remarkable, and the sterilizing efficiency reaches over 90 percent in comparison with the flora density of 0h in 24h for 10 fresh cooked foods (chicken wings, duck necks, beef, duck intestines, marinated eggs, lotus root slices, bean curd sheets, kelp, vegetables and marinated peanuts). Especially for relatively smooth cooked food such as lotus root slices, kelp and the like, the sterilization efficiency exceeds 99 percent, and the food preservation period is prolonged.
On the other hand, the sensory quality and lipid oxidation of cooked food are compared, and the two devices are not different; after the sterilization and preservation cabinet in the embodiment is adopted, in the refrigeration process, the peroxide value PV of the meat has no obvious difference (p is less than or equal to 0.05) compared with that before refrigeration, and almost no difference exists in sensory properties.
TABLE 1 comparison of growth and digestion of different kinds of cooked food colonies in the device test environments of the experimental group and the control group
Example 2
The fresh-keeping sterilizing cabinet is assembled according to the following requirements:
the length of the refrigerator body is 2.0 meters, the width is 1 meter, the height is 1.5 meters, the refrigeration temperature is 4 +/-2 ℃, 6 blue LED lamp tubes (the wavelength is 420 +/-10 nm) with the length of 50cm are fixed on a sterilization light source bracket through lamp caps, then the sterilization light source bracket is fixed on the top surface, the arrangement mode is the arrangement mode A-F in the figure 6, and the distance between the blue LED lamp tubes and the table top is controlled to be about 45cm by adjusting the sterilization light source bracket;
wherein, A is that 6 Led lamp tubes are divided into two rows, and the two rows are arranged in parallel; B-F is to arrange 6 Led lamp tubes randomly, and every two lamp tubes are not parallel or on the same straight line.
Compared with the refrigeration and preservation effects of cooked food and cold fresh meat on the market, the sterilization and preservation cabinet equipment adopting the 6 arrangement modes has the following advantages:
(1) purchasing cold fresh pork (sample 1), cold fresh beef (sample 2), spiced chicken wings (sample 3) and spiced potatoes (sample 4) from a supermarket, wherein each sample is 30 parts, one group is 5 parts, six groups are provided, each group corresponds to one device, the two devices are respectively paved on a tray, the two devices are started, and the sample tray is placed on the table top of a fresh cabinet;
(2) samples were taken at 0h, 4h, and 8h, respectively, and analyzed in the same manner as in example 1.
TABLE 2 comparison of different arrangement modes of sterilization light sources of sterilization fresh-keeping cabinet for sterilization effect of food
As shown in table 2, the results show that the sterilization effect of the sterilization and preservation cabinet is significant, and compared with the initial contamination, the density of the contamination in the sample is reduced, but the influence of different arrangement modes of the sterilization light sources is large, wherein the sterilization efficiency of the arrangement mode a is the highest, because the irradiation of the blue light lamp under the arrangement mode a is the most uniform, the sterilization efficiency reaches 99% after 8h, and the food preservation is facilitated.
In addition, we also compared the food sensory quality and lipid oxidation, and there is no difference in 6 modes, which shows that the sterilization safe of the utility model can not cause negative effect on the food quality.
Example 3
The arrangement mode of the germicidal light sources in the embodiment 2 is adopted, and the difference from the embodiment 2 is that the vertical distances from the germicidal light sources to the food tray are controlled to be different values, namely 10cm respectively, by adjusting the germicidal light source bracket; 50 cm; 90 cm; 130 cm; 170 cm.
The effects of refrigerating and preserving cooked food and chilled meat sold in the market are compared by utilizing the sterilization safe:
the sample and analysis method were the same as in example 2.
TABLE 3 comparison of the sterilization and preservation effects of the sterilization and disinfection cabinet in this embodiment on food by different distances between the sterilization light source and the food tray
As shown in Table 3, the results show that the sterilization effect of the sterilization and preservation cabinet is remarkable when the distance between the light sources is 90cm or less, and the density of the polluted bacteria in the sample is reduced compared with that of the polluted bacteria in the initial period.
Example 4
The sterilization efficiency of different parts in the sterilization and preservation cabinet is tested by adopting the sterilization light source arrangement mode A in the embodiment 2.
Adjusting the vertical distance from the sterilizing light source to the food tray to be 50cm through the sterilizing light source bracket; in order to test the sterilization efficiency of blue light on the polluted bacteria at different positions (including a table board, a tray and the side surface of the sterilization cabinet) in the preservation cabinet:
1) sample site sterilization
Fully wiping and disinfecting different sampling parts by using 85% alcohol;
2) bacterial liquid preparation
Liquid culture of E.coli to OD using LB Medium6001.5, centrifuging, collecting thallus, washing with deionized water, resuspending and precipitating, and adjusting the concentration of bacteria liquid to about 108cfu/mL for use.
3) Artificial pollution
Taking a proper amount of bacterial liquid, uniformly coating the bacterial liquid on the inner side surfaces of a table top, a tray and a fresh-keeping cabinet with a certain area, and controlling the concentration of the bacterial liquid to be about 105cfu/cm2。
4) Measurement of Sterilization efficiency
For powering up the fresh-keeping cabinet, the areas with fixed areas on the table top, the tray and the inner side surface of the fresh-keeping cabinet are wiped with sterile cotton swabs for 0h, 4h, 8h, 12h and 16h respectively, the cotton swabs are washed with sterile water to prepare bacterial suspension, and then counting is carried out (the method is the same as the example 1). Meanwhile, the effect of sterilizing the pollution bacteria on the table board, the tray and the inner side surface of the preservation cabinet by the blue light lamp is compared by taking the preservation cabinet without the blue light lamp as a reference.
Table 4 sterilization effect of sterilization safe of embodiment 4 on table top, tray and inner side surface of fresh-keeping cabinet
The results are shown in table 4, the blue light lamp has very high sterilization efficiency on the inner table top, the tray and the side surface of the fresh-keeping sterilization cabinet, and may be related to the smooth surface of the fresh-keeping sterilization cabinet to cause sufficient sterilization, after the blue light is irradiated for 4 hours, the E.coli density is immediately reduced by several orders of magnitude, and after the blue light is irradiated for 16 hours, the E.coli sterilization efficiency reaches 99.93%, 99.93% and 99.91% respectively.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the invention.
Claims (10)
1. A sterilization and preservation cabinet is characterized by comprising a cabinet body, a sterilization light source and a power supply, wherein the sterilization light source and the power supply are arranged on the inner side of the cabinet body through a sterilization light source bracket; the cabinet body is a cube or a trapezoidal cube; the inner wall of the cabinet body comprises a top surface and a plurality of side surfaces; the sterilizing light sources are uniformly distributed on the top surface and/or the side surface of the cabinet body.
2. The sterilizing and refreshing cabinet according to claim 1, wherein said sterilizing light source is a blue light lamp.
3. The sterilization and preservation cabinet according to claim 2, wherein the blue light lamp emits blue light with a wavelength of 400-480 nm.
4. The sterilizing and refreshing cabinet according to claim 2, wherein said blue light lamp is tubular.
5. The sterilizing and refreshing cabinet according to claim 2, wherein said blue light lamp is spherical.
6. The sterilizing and refreshing cabinet according to claim 4, wherein 50% or more of said blue light lamps are parallel to each other when said blue light lamps are tubular.
7. The sterilizing and refreshing cabinet according to claim 5, wherein when said blue light lamps are spherical, 50% or more of the connecting lines between the blue light lamps are parallel to each other.
8. The sterilization and preservation cabinet according to claim 1, wherein the sterilization light source support is a telescopic support, and the distance between the sterilization light source and the point to be sterilized can be controlled within 90 cm.
9. The sterilizing fresh-keeping cabinet of claim 1, further comprising a power connection wire.
10. The sterilizing and freshness-retaining cabinet according to claim 1, wherein the sterilizing light source is connected with the power supply through a power connection line.
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CN111956818A (en) * | 2020-08-17 | 2020-11-20 | 江南大学 | Blue light disinfection and cleaning method for ring-pull tab of pop-top can |
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CN111956818A (en) * | 2020-08-17 | 2020-11-20 | 江南大学 | Blue light disinfection and cleaning method for ring-pull tab of pop-top can |
CN111956818B (en) * | 2020-08-17 | 2022-02-08 | 江南大学 | Blue light disinfection and cleaning method for ring-pull tab of pop-top can |
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