CN111520954A - LED illumination fresh-keeping refrigerator and fresh-keeping method - Google Patents
LED illumination fresh-keeping refrigerator and fresh-keeping method Download PDFInfo
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- CN111520954A CN111520954A CN202010528101.1A CN202010528101A CN111520954A CN 111520954 A CN111520954 A CN 111520954A CN 202010528101 A CN202010528101 A CN 202010528101A CN 111520954 A CN111520954 A CN 111520954A
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- display screen
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- vegetables
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- 238000005286 illumination Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 8
- 235000013311 vegetables Nutrition 0.000 claims abstract description 21
- 238000004321 preservation Methods 0.000 claims abstract description 10
- 239000010410 layer Substances 0.000 claims description 3
- 239000011229 interlayer Substances 0.000 claims description 2
- 235000012055 fruits and vegetables Nutrition 0.000 abstract description 13
- 238000003860 storage Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000001954 sterilising effect Effects 0.000 abstract description 3
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 3
- 238000009920 food preservation Methods 0.000 abstract description 2
- 238000005192 partition Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 235000021384 green leafy vegetables Nutrition 0.000 description 18
- 235000013305 food Nutrition 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 241000366676 Justicia pectoralis Species 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical class [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000002354 daily effect Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 235000004280 healthy diet Nutrition 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 244000000010 microbial pathogen Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000021049 nutrient content Nutrition 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000005068 transpiration Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D27/00—Lighting arrangements
- F25D27/005—Lighting arrangements combined with control means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/005—Mounting of control devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
- F25D2400/36—Visual displays
- F25D2400/361—Interactive visual displays
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2500/00—Problems to be solved
- F25D2500/06—Stock management
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Storage Of Fruits Or Vegetables (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
The invention relates to the field of fruit and vegetable food preservation and storage, in particular to an LED illumination preservation refrigerator and a method for preserving vegetables by using the refrigerator. The LED illumination fresh-keeping refrigerator comprises a refrigerator body, a refrigerating system, a touch display screen, a temperature control system and an LED illumination sterilization system. And an LED lamp strip is independently arranged on the upper part of each layer of partition plate in the refrigerator body. The type of the vegetables is selected through the touch display screen, and the light-emitting color RGB numerical value and the light-emitting interval duration of the lamp strip are controlled through the single chip microcomputer according to the type and the requirement of different vegetables. According to the technical scheme provided by the invention, the preservation time of the vegetables is obviously prolonged and the storage quality is improved by the combined implementation of the LED light irradiation technology and the low-temperature preservation technology.
Description
Technical Field
The invention relates to the field of fruit and vegetable food preservation and storage, in particular to an LED illumination preservation refrigerator which can obviously prolong the preservation time of vegetables and improve the quality of stored fruits and vegetables.
Background
With the deep concept of healthy diet, people pay more and more attention to the intake of various foods and put higher demands on the quality of the foods. As a big agricultural country, food resources are very rich in China and the annual output of food is huge. Most of the foods are still in life activities after primary processing, and if proper fresh-keeping measures are not taken in storage and transportation, the foods are rotten and deteriorated.
The LED light treatment is an effective fruit and vegetable post-harvest treatment technology, can effectively kill pathogenic microorganisms on the surfaces of fruits and vegetables, and reduces the risk of food-borne pathogenic bacteria; and other strains such as saprogenic bacteria can be killed. Meanwhile, the light with different colors has certain promotion effect on life activities of different picked fruits and vegetables.
Most of the current LED technical researches stay in a laboratory stage, and how to put the LED lamps with adjustable RGB color numerical values into retail terminal shelves, refrigerators and cold storages so as to form a simple, convenient and effective vegetable preservation mode still needs to be solved.
Disclosure of Invention
The invention at least aims to provide a cold environment and an operation method which can obviously prolong the fresh-keeping time of vegetables and improve the quality of stored fruits and vegetables by using an LED lamp RGB color numerical value adjustable technology.
In order to achieve the above object, one embodiment of the present invention provides an LED illumination fresh-keeping refrigerator, which includes a refrigerator body, a refrigeration system, a touch display screen and an LED strip; a touch display screen is arranged on the refrigerator body door; the upper part of the interlayer of the refrigerator body is provided with an LED lamp belt; the bottom of the refrigerator body is provided with an equipment room; a control center is arranged in the equipment room and connected with the touch display screen.
In one embodiment, the touch display screen is a 7-inch touch display screen special for a single chip microcomputer, the types of vegetables are selected through the touch display screen, and the selected information is fed back to the control center.
In one embodiment, the LED strip is a programmable WS2812b strip, the strip is connected to a single chip, and one strip is provided for each layer independently.
In one embodiment, the control center is a single chip microcomputer.
In one embodiment, the one-chip programming language is python. According to different vegetable types and requirements, the light-emitting color RGB numerical value and the light-emitting interval duration of the lamp strip are controlled by the single chip microcomputer.
The invention also provides a method for keeping vegetables fresh by using the LED illumination fresh-keeping refrigerator, which comprises the following steps: selecting the type of vegetables on the touch display screen; selecting an LED illumination RGB value and an illumination time interval on a touch display screen; the collected vegetables are selected, cleaned, dried in the air and precooled and then placed in a refrigerator body; and starting a single chip microcomputer preservation program to start vegetable preservation.
The technical scheme provided by the invention can effectively prolong the fresh-keeping time of fruit and vegetable food and improve the quality of stored fruit and vegetable.
Drawings
Fig. 1 is a schematic view of the overall structure of an LED illumination crisper according to an embodiment of the present invention. In the figure: 1-WS2812b lamp strip, 2-evaporator, 3-single chip microcomputer and 5-compressor.
Fig. 2 is a schematic cross-sectional structure view of the LED lighting preservation refrigerator in the embodiment shown in fig. 1. In the figure: 3-single chip microcomputer, 4-touch screen display and 5-compressor.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the accompanying drawings.
Fig. 1-2 show one embodiment of the LED illuminated crisper of the present invention.
The refrigerator is improved on the basis of a common refrigeration and preservation refrigerator, and is provided with a WS2812b lamp strip 1, an evaporator 2, a singlechip 3, a touch screen display 4 and a compressor 5. The WS2812b lamp strip 1 can realize color change through programming, obtain the color of the specified wavelength which can be used for sterilization, realize that the RGB value can be selected at will from 0 to 255. The temperature change in the refrigerator body is sensed through the temperature sensor, and the single chip microcomputer control center 3 carries out data analysis and processing and realizes effective temperature control of safe operation of the refrigerator. All relevant program codes of the singlechip 3 are programmed by python language, and process real-time data from the temperature sensor and the touch screen display 4 and output a relay of a result value temperature control system and the WS2812b lamp strip 1. The touch screen display 4 can perform input and real-time display of relevant parameters.
The LED illumination fresh-keeping refrigerator comprises a refrigerator body, a refrigerating system, a touch display screen, a temperature control system and an LED illumination sterilization system. And an LED lamp strip is independently arranged on the upper part of each layer of partition plate in the refrigerator body. The type of the vegetables is selected by touching the display screen, and the selected information is fed back to the control center. According to different vegetable types and requirements, the light-emitting color RGB numerical value and the light-emitting interval duration of the lamp strip are controlled by the single chip microcomputer.
The use mode of the LED illumination fresh-keeping refrigerator provided by the invention is described below by taking the Chinese little greens as an example.
The mechanically harvested Chinese little greens are selected, and the Chinese little greens which are uniform in size, normal in color and luster (dark green), fresh, clean and free of obvious defects (including yellow leaves, mechanical injury, rotten mildew, freezing injury and plant diseases and insect pests) are selected. Rapidly carrying out staged pre-cooling treatment on the picked and finished Chinese little greens in constant-temperature water baths at 20 ℃, 10 ℃ and 4 ℃ respectively, wherein the temperature of the pre-cooled Chinese little greens is 4 ℃; the ratio of the mass of the pre-cooling water in the water bath tank to the mass of the Chinese little greens is 10: 1; and during precooling, recording the temperature of each part of the Chinese little greens by using a multi-point temperature collector. Putting the precooled Chinese little greens into hypochlorous acid water with the temperature of 4 ℃ and the concentration of 200 ppm for cleaning for 2 min; the mass ratio of the hypochlorous acid water to the Chinese little greens is 10: 1; and (3) airing the cleaned fresh-cut Chinese little greens for 30 min at the temperature of 10 +/-1 ℃ and the relative humidity of 45-55%, so that excessive water loss and wilting of leaves caused by the respiration and transpiration of the fresh-cut Chinese little greens due to overhigh temperature and overlong time are avoided.
And then putting the precooled Chinese little greens into transparent PET plastic boxes with the length of 20 cm and the width of 12.5 cm, wherein the mass of the Chinese little greens in each packaging box is 50 g, and wrapping the Chinese little greens with a sterile PE high-light-transmission antifogging film. The environmental conditions during packaging were 20 ℃ and 80% humidity. And then, flatly placing the packaged Chinese little greens in an environment at 4 ℃ and at a position which is 30 cm away from the LED lamp, and keeping the storage humidity at about 90% RH by using a saturated potassium chloride solution, and illuminating for 12 h every day. RGB of the LED strip (255,0, 255).
Experiments show that the storage period of the Chinese little greens is more than 15 days, the quality and the nutrient content of the Chinese little greens are basically kept unchanged, the total number of bacterial colonies is kept below 2.00 log CFU/g, and the Chinese little greens has strong practicability and commercial value.
As can be seen from the above description of the specific embodiments of the present invention, the fresh-keeping method for fruit and vegetable food provided by the present invention has significant advantages compared with the prior art: the fresh-keeping time of the fruit and vegetable food is effectively prolonged, and the putrefaction of the fruit and vegetable food is reduced; the long-time fresh-keeping quality of the fruit and vegetable food is improved, and particularly compared with the traditional physical and chemical fresh-keeping technology, the illumination treatment has the advantages of wide sources, low cost, small volume, no need of participation of large-scale equipment and the like, and is more convenient and faster in daily operation.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (6)
1. The utility model provides a LED illumination refrigerator that keeps fresh, includes refrigerator box, refrigerating system, touch display screen and LED lamp area, its characterized in that:
a touch display screen is arranged on the refrigerator body door;
the upper part of the interlayer of the refrigerator body is provided with an LED lamp belt;
the bottom of the refrigerator body is provided with an equipment room;
a control center is arranged in the equipment room and connected with the touch display screen.
2. The LED illuminated crisper according to claim 1, wherein:
the touch display screen is a 7-inch touch display screen special for the single chip microcomputer, the types of vegetables are selected through the touch display screen, and the selected information is fed back to the control center.
3. The LED illuminated crisper according to claim 1, wherein:
the LED lamp strip is a programmable WS2812b lamp strip, the lamp strip is connected with the single chip microcomputer, and each layer is independently provided with one lamp strip.
4. The LED illuminated crisper according to claim 1, wherein:
the control center is a singlechip.
5. The single chip microcomputer according to claim 4, wherein:
according to different vegetable types and requirements, the light-emitting color RGB numerical value and the light-emitting interval duration of the lamp strip are controlled through the single chip microcomputer.
6. The method for keeping vegetables fresh for the refrigerator under the LED illumination of the claims 1 to 5, which is characterized in that:
selecting the type of vegetables on the touch display screen;
selecting an LED illumination RGB value and an illumination time interval on a touch display screen;
the collected vegetables are selected, cleaned, dried in the air and precooled and then placed in a refrigerator body;
and starting a single chip microcomputer preservation program to start vegetable preservation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010528101.1A CN111520954A (en) | 2020-06-11 | 2020-06-11 | LED illumination fresh-keeping refrigerator and fresh-keeping method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010528101.1A CN111520954A (en) | 2020-06-11 | 2020-06-11 | LED illumination fresh-keeping refrigerator and fresh-keeping method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111520954A true CN111520954A (en) | 2020-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010528101.1A Pending CN111520954A (en) | 2020-06-11 | 2020-06-11 | LED illumination fresh-keeping refrigerator and fresh-keeping method |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115336629A (en) * | 2022-07-25 | 2022-11-15 | 江苏省农业科学院 | Intelligent LED illumination fresh-keeping cabinet |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103776232A (en) * | 2013-11-05 | 2014-05-07 | 四川长虹电器股份有限公司 | Photosynthetic fresh-keeping refrigerator based on image recognition and implementation method thereof |
| CN106052296A (en) * | 2016-06-20 | 2016-10-26 | 刘华英 | Control method for intelligent fresh-keeping refrigerator capable of identifying kinds of fruits and vegetables |
| CN111034785A (en) * | 2019-12-16 | 2020-04-21 | 上海海洋大学 | Method for preserving fresh-cut Chinese little greens by virtue of purple and far infrared LED illumination |
| CN111038864A (en) * | 2020-01-14 | 2020-04-21 | 上海海洋大学 | Fresh-cut leaf vegetable transport case and transport method |
| CN212538416U (en) * | 2020-06-11 | 2021-02-12 | 上海海洋大学 | LED illumination fresh-keeping refrigerator |
-
2020
- 2020-06-11 CN CN202010528101.1A patent/CN111520954A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103776232A (en) * | 2013-11-05 | 2014-05-07 | 四川长虹电器股份有限公司 | Photosynthetic fresh-keeping refrigerator based on image recognition and implementation method thereof |
| CN106052296A (en) * | 2016-06-20 | 2016-10-26 | 刘华英 | Control method for intelligent fresh-keeping refrigerator capable of identifying kinds of fruits and vegetables |
| CN111034785A (en) * | 2019-12-16 | 2020-04-21 | 上海海洋大学 | Method for preserving fresh-cut Chinese little greens by virtue of purple and far infrared LED illumination |
| CN111038864A (en) * | 2020-01-14 | 2020-04-21 | 上海海洋大学 | Fresh-cut leaf vegetable transport case and transport method |
| CN212538416U (en) * | 2020-06-11 | 2021-02-12 | 上海海洋大学 | LED illumination fresh-keeping refrigerator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115336629A (en) * | 2022-07-25 | 2022-11-15 | 江苏省农业科学院 | Intelligent LED illumination fresh-keeping cabinet |
| CN115336629B (en) * | 2022-07-25 | 2023-09-29 | 江苏省农业科学院 | Intelligent LED illumination fresh-keeping cabinet |
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