CN112344614B - Low-voltage electrostatic field low-temperature vacuum storage fresh-keeping equipment - Google Patents
Low-voltage electrostatic field low-temperature vacuum storage fresh-keeping equipment Download PDFInfo
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- CN112344614B CN112344614B CN202011391821.4A CN202011391821A CN112344614B CN 112344614 B CN112344614 B CN 112344614B CN 202011391821 A CN202011391821 A CN 202011391821A CN 112344614 B CN112344614 B CN 112344614B
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- 238000003860 storage Methods 0.000 title claims abstract description 43
- 230000005686 electrostatic field Effects 0.000 title claims abstract description 20
- 230000003068 static effect Effects 0.000 claims description 14
- 230000005611 electricity Effects 0.000 claims description 11
- 238000004321 preservation Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 239000000523 sample Substances 0.000 claims description 6
- 230000002452 interceptive effect Effects 0.000 claims description 2
- 235000013311 vegetables Nutrition 0.000 abstract description 22
- 235000021022 fresh fruits Nutrition 0.000 abstract description 18
- 241000894006 Bacteria Species 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 8
- 241000233866 Fungi Species 0.000 abstract description 5
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 230000007306 turnover Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000009920 food preservation Methods 0.000 description 2
- 238000003306 harvesting Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004060 metabolic process Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 235000016709 nutrition Nutrition 0.000 description 2
- 230000035764 nutrition Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 238000009828 non-uniform distribution Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/042—Air treating means within refrigerated spaces
-
- 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
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
-
- 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
- F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
-
- 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
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/04—Treating air flowing to refrigeration compartments
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)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
The invention aims to solve the problem of providing low-voltage electrostatic field low-temperature vacuum storage fresh-keeping equipment, and aims to solve the characteristic that fresh, vegetable and fungus tissues are unevenly distributed, and an uneven low-voltage electrostatic field is formed by a plurality of electrostatic plate groups so as to improve the fresh-keeping effect on fresh fruits, vegetables and fungus. The vacuum device, the refrigerating unit and the storage room are matched to achieve perfect matching of low vacuum and temperature and humidity, and achieve better fresh-keeping effect on fresh fruits, vegetables and bacteria. The device comprises a device main body, a vacuum device and a refrigerating unit, wherein the vacuum device and the refrigerating unit are positioned outside the device main body, at least one storage room is arranged in the device main body, and a safety cover is arranged at the upper end of the device main body in a turnover manner; the inner side wall of the storage room is provided with a plurality of electrostatic polar plate groups, the voltage and the frequency of each electrostatic polar plate group are independently regulated and controlled, and a vacuum tube of the vacuum device and a refrigerating tube of the refrigerating unit are communicated into the storage room.
Description
Technical Field
The invention belongs to fresh fruit, vegetable and fungus fresh-keeping storage equipment, and particularly relates to low-voltage electrostatic field low-temperature vacuum storage fresh-keeping equipment.
Background
The fresh fruits, vegetables and bacteria are rich in nutrition and are indispensable food in life of people. However, the fresh fruits, vegetables and bacteria have the characteristics of high water content, vigorous metabolism after harvest, seasonality, regionality of production, perishability of products and the like, and bring great difficulty to various circulation links such as post-harvest treatment, storage, transportation and marketing and the like. The production, consumption and export of fresh fruits, vegetables and bacteria are large countries in China, and the yield of fresh fruits, vegetables and bacteria is stable in the first place of the world for many years. However, the problems of high circulation loss rate, large price fluctuation, incapability of guaranteeing quality safety and the like of the picked fresh fruits, vegetables and bacteria are very outstanding due to the development and the development delay of the technology and facilities for the picked fresh fruits, vegetables and bacteria in China. In particular, compared with developed countries, the post-partum added value of the fresh fruits, vegetables and bacteria in China is lower, and the post-partum added value is quite disproportionate to the position of the first country. Along with the continuous improvement of national living standard, people not only meet the supply of fresh fruits, vegetables and bacteria, but also put higher demands on the freshness, sensory quality, nutrition quality, quality safety and the like. Therefore, the technology measures for effectively regulating and controlling the postharvest fresh-keeping treatment of fresh fruits, vegetables and bacteria are explored, the postharvest metabolic strength of the product is reduced, the postharvest loss of the product is reduced, the quality and the quality safety of the product are improved, and the technology measures become the key for solving the problems of increasing income of farmers, increasing value of the product and upgrading the agricultural industry structure and have wide development space.
The physical electrostatic field is used as an emerging high-technology, is mainly used for thawing marine products or meat and maintaining quality in the food preservation field, and is difficult to realize large-scale and industrialized popularization and application along with the manifestation of the safety problem of high-voltage electrostatic field preservation equipment, the limitation of application environment and the like in recent years. Therefore, the low-voltage electrostatic field preservation technology is widely focused in the field of food preservation. However, the distribution of chemical components, enzymes related to metabolism and the like of fresh fruits, vegetables and bacteria is also in a non-uniform state due to the difference of different organs or tissues, so that the effect of directly using a low-voltage electrostatic field for preserving is not obvious.
Disclosure of Invention
The invention aims to solve the problem of providing low-voltage electrostatic field low-temperature vacuum storage fresh-keeping equipment, and aims to solve the characteristic that fresh, vegetable and fungus tissues are unevenly distributed, and an uneven low-voltage electrostatic field is formed by a plurality of electrostatic plate groups so as to improve the fresh-keeping effect on fresh fruits, vegetables and fungus. The vacuum device, the refrigerating unit and the storage room are matched to achieve perfect matching of low vacuum and temperature and humidity, and achieve better fresh-keeping effect on fresh fruits, vegetables and bacteria.
The invention is realized by the following technical scheme:
the low-voltage electrostatic field low-temperature vacuum storage fresh-keeping equipment comprises an equipment main body, a vacuum device and a refrigerating unit, wherein the vacuum device and the refrigerating unit are positioned outside the equipment main body;
The inner side wall of the storage room is provided with a plurality of electrostatic polar plate groups, the voltage and the frequency of each electrostatic polar plate group are independently regulated and controlled, and a vacuum tube of the vacuum device and a refrigerating tube of the refrigerating unit are communicated into the storage room.
Further, electrostatic electrode plate groups are respectively arranged on the front, rear, left and right inner side walls of the storage chamber.
Further, the lateral wall of equipment main part is provided with the switch board, the switch board includes MCU controller, converter, touch display screen and static generating device, MCU controller electricity connection converter, touch display screen and four static generating device, four static generating device corresponds the electricity and connects four static polar plate groups, and the converter realizes that the frequency fluctuation of static polar plate group is in 20-2000Hz under the regulation and control of MCU controller, and voltage is less than or equal to 150v.
Further, the vacuum tube of the vacuum device, the refrigerating tube of the refrigerating unit and the storage room are communicated through the electromagnetic reversing device.
Further, a temperature and humidity sensor and a pressure sensor are arranged in the storage chamber.
Further, the temperature sensor further comprises a plurality of temperature and humidity sensor probes, and in the using process, the probes can be placed into each material, and the temperature and humidity of the feedback materials can be recorded in real time.
Further, the vacuum device comprises a vacuum pump set and a vacuum tank set, and the vacuum pump set is connected with the vacuum tank set.
Further, a plurality of self-locking moving wheels are arranged at the bottom of the equipment main body.
Compared with the prior art, the invention has the following beneficial effects:
The electrostatic antistaling device can effectively improve the electrostatic antistaling effect of fresh fruits, vegetables and bacteria by forming an electrostatic field with non-uniform interaction through the four electrostatic polar plate groups aiming at the characteristic of non-uniform distribution of the fresh fruits, vegetables and bacteria tissues. The vacuum tube of the vacuum device, the refrigerating tube of the refrigerating unit and the storage room are communicated in a matched manner through the electromagnetic reversing device, so that the vacuum degree and the temperature of the storage room can be well controlled, the better fresh-keeping effect on fresh agricultural products such as vegetables and bacteria is achieved, and a plurality of convenience is provided for fresh keeping and circulation of the fresh vegetables and bacteria. The problems of high rotting rate and high product loss in the storage and circulation processes of fresh fruits, vegetables and bacteria are solved, the intelligent degree of the fresh-keeping equipment in China is improved, the industrial structure of the equipment is adjusted, the efficiency is improved, and the energy consumption is reduced.
Drawings
FIG. 1 is a schematic diagram of a three-dimensional structure of a low-voltage electrostatic field low-temperature vacuum storage and preservation device according to the invention;
FIG. 2 is a schematic view of the internal structure of the main body of the apparatus according to the present invention;
FIG. 3 is a schematic view of an electrostatic plate assembly according to the present invention;
In the figure: 1. the self-locking type air conditioner comprises an equipment main body, 2, a control cabinet, 3, a refrigerating unit, 4, a storage room, 5, a safety cover, 6, an electrostatic polar plate group, 7, an MCU controller, 8, a touch display screen, 9, a vacuum pump group, 10, a vacuum tank group, 11, an electromagnetic reversing device, 12 and a self-locking movable wheel.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
As shown in fig. 1-3, the embodiment discloses a low-voltage electrostatic low-temperature vacuum storage and preservation device, which mainly comprises a device main body 1, a vacuum device, a refrigerating unit 3 and a control cabinet 2. A storage room 4 is arranged in the equipment main body 1, and a safety cover 5 is arranged at the upper end of the equipment main body 1 in a turnover way. As shown in fig. 3, an electrostatic plate group 6 is respectively arranged on the front, rear, left and right inner side walls of the storage chamber 4, and the electrostatic plate groups 6 can respectively control and set different electrostatic parameters to generate interactive electrostatic fields, thereby achieving the requirement of enhancing the electrostatic fresh-keeping effect.
The control cabinet 2 is arranged on the outer side wall of the equipment main body 1 and is integrated, the control cabinet 2 comprises an MCU controller 7, a frequency converter, a touch display screen 8 and four static electricity generating devices, the MCU controller 7 is electrically connected with the frequency converter, the touch display screen 8 and the static electricity generating devices, and the four static electricity generating devices are correspondingly and electrically connected with the four static electricity pole plate groups 6. In order to form an irregular electrostatic field, the voltage and the frequency of the two electrostatic plates are adjustable within the range of 0-150V and 30-2000 hz; the voltage and frequency of one electrostatic polar plate group are adjustable within the range of 0-36V and 30-800 hz; the voltage and frequency of the last electrostatic polar plate group are adjustable in the range of 36-150V and 800-2000 hz.
The vacuum device comprises a vacuum pump set 9 and a vacuum tank set 10, the vacuum pump set 9 is connected with the vacuum tank set 10, a vacuum tube of the vacuum tank set 10 is communicated with a refrigerating tube of the refrigerating unit 3 through an electromagnetic reversing device 11 to the inside of the storage chamber 4, the electromagnetic reversing device 11, the vacuum device and the refrigerating unit 3 are all electrically connected to the MCU controller 7, and the electromagnetic reversing device is controlled by setting the MCU controller 7, so that the vacuum device and the refrigerating unit 3 are selectively communicated with the storage chamber 4, and the comprehensive control of temperature and vacuum degree can be better realized. Temperature and humidity sensors and pressure sensors are arranged in the storage chamber 4 and are electrically connected to the MCU controller 7, wherein the temperature sensors further comprise a plurality of temperature and humidity sensor probes, and in the use process, the probes can be placed in each material to record the temperature and humidity of the feedback material in real time.
The touch display screen can manually set various parameters and communicate with the MCU controller in real time, and can realize recording, comparison and feedback of parameters such as equipment, materials and the like and transmit the parameters to the user side. The bottom of the equipment main body is also matched with four self-locking movable wheels 12, so that the equipment can be freely moved according to different precooling rooms, and can be locked and fixed during use.
The low-voltage electrostatic field low-temperature vacuum storage fresh-keeping equipment of the invention specifically comprises the following operations:
First, the apparatus main body is moved to a desired position to be locked, and the storage chamber, the vacuum apparatus, and the refrigerator group are connected together by the electromagnetic directional apparatus. And then placing the goods to be stored and kept fresh in the storage room, respectively placing the temperature and humidity sensor groups in each piece of goods so as to record data in real time, and then closing the safety cover. The required parameters of temperature and humidity, vacuum degree and electrostatic field polar plate group are set through a touch display screen. When the equipment is in normal operation, the MCU controller sends out instructions according to data fed back by the temperature and humidity sensor, controls the starting and stopping of the refrigerating unit and the vacuum device, and controls the cold quantity and the vacuum degree value in the storage chamber by controlling the electromagnetic reversing device. After the equipment operation is finished, the electrostatic polar plate group discharges firstly, and a user can take out goods.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the invention in any way, and any person skilled in the art may make modifications or alterations to the disclosed technical content to the equivalent embodiments. However, any simple modification, equivalent variation and variation of the above embodiments according to the technical substance of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (6)
1. The low-voltage electrostatic field low-temperature vacuum storage fresh-keeping device is characterized by comprising a device main body, a vacuum device and a refrigerating unit, wherein the vacuum device and the refrigerating unit are positioned outside the device main body;
The front, rear, left and right inner side walls of the storage chamber are respectively provided with an electrostatic polar plate group, and the two opposite electrostatic polar plate groups can be homopolar or heteropolar; the electrostatic polar plate groups can be respectively controlled and set with different electrostatic parameters to generate interactive electrostatic fields, wherein the voltage and frequency of the two electrostatic polar plates are adjustable within the range of 0-150V and 30-2000 hz; the voltage and frequency of one electrostatic polar plate group are adjustable within the range of 0-36V and 30-800 hz; the voltage and frequency of the last electrostatic polar plate group are adjustable within the range of 36-150V and 800-2000 hz;
The vacuum tube of the vacuum device and the refrigerating tube of the refrigerating unit are communicated to the storage chamber;
the vacuum tube of the vacuum device, the refrigerating tube of the refrigerating unit and the storage room are communicated through the electromagnetic reversing device.
2. The storage and fresh-keeping device according to claim 1, wherein a control cabinet is arranged on the outer side wall of the device main body, the control cabinet comprises an MCU controller, a frequency converter, a touch display screen and four static electricity generating devices, the MCU controller is electrically connected with the frequency converter, the touch display screen and the four static electricity generating devices, the four static electricity generating devices are correspondingly and electrically connected with the four static electricity pole plate groups, and the frequency converter realizes that the frequency fluctuation of the static electricity pole plate groups is within 20-1000Hz and the voltage is less than or equal to 150v under the regulation and control of the MCU controller.
3. The storage and preservation apparatus according to claim 1, wherein the storage compartment is provided with a temperature and humidity sensor and a pressure sensor.
4. The storage and preservation apparatus according to claim 3, wherein the temperature sensor further comprises a plurality of temperature and humidity sensor probes, and the probes can be placed in each material during use, and feedback material temperature and humidity can be recorded in real time.
5. The storage and preservation apparatus of claim 1 wherein the vacuum means comprises a vacuum pump stack and a vacuum tank stack, the vacuum pump stack being connected to the vacuum tank stack.
6. The storage and preservation apparatus according to any one of claims 1 to 5 wherein the apparatus body is provided with a plurality of self-locking moving wheels at the bottom thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011391821.4A CN112344614B (en) | 2020-12-03 | 2020-12-03 | Low-voltage electrostatic field low-temperature vacuum storage fresh-keeping equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011391821.4A CN112344614B (en) | 2020-12-03 | 2020-12-03 | Low-voltage electrostatic field low-temperature vacuum storage fresh-keeping equipment |
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| Publication Number | Publication Date |
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| CN112344614A CN112344614A (en) | 2021-02-09 |
| CN112344614B true CN112344614B (en) | 2024-07-05 |
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| CN202011391821.4A Active CN112344614B (en) | 2020-12-03 | 2020-12-03 | Low-voltage electrostatic field low-temperature vacuum storage fresh-keeping equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115644234A (en) * | 2022-10-09 | 2023-01-31 | 宁夏大学 | Low-voltage electrostatic field combined with vacuum thawing device and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110915899A (en) * | 2019-12-18 | 2020-03-27 | 宁夏大学 | A method and device for using low-voltage electrostatic field and low-temperature preservation of long jujube |
| CN210581854U (en) * | 2019-06-24 | 2020-05-22 | 青岛澳柯玛智慧冷链有限公司 | Direct-cooling horizontal freezing display cabinet with electric field fresh-keeping function |
| CN213811284U (en) * | 2020-12-03 | 2021-07-27 | 青岛农业大学 | Low-voltage electrostatic field low-temperature vacuum storage and preservation equipment |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4764385A (en) * | 1987-02-10 | 1988-08-16 | Peter Butland | Process for preserving fresh fruit and vegetables |
| JP5683032B1 (en) * | 2014-02-17 | 2015-03-11 | 錦隆 後藤 | Freshness maintaining device using space potential generator |
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2020
- 2020-12-03 CN CN202011391821.4A patent/CN112344614B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210581854U (en) * | 2019-06-24 | 2020-05-22 | 青岛澳柯玛智慧冷链有限公司 | Direct-cooling horizontal freezing display cabinet with electric field fresh-keeping function |
| CN110915899A (en) * | 2019-12-18 | 2020-03-27 | 宁夏大学 | A method and device for using low-voltage electrostatic field and low-temperature preservation of long jujube |
| CN213811284U (en) * | 2020-12-03 | 2021-07-27 | 青岛农业大学 | Low-voltage electrostatic field low-temperature vacuum storage and preservation equipment |
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