CN114435775A - Preservation equipment and safety device and safety method for preservation equipment - Google Patents
Preservation equipment and safety device and safety method for preservation equipment Download PDFInfo
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- CN114435775A CN114435775A CN202210111096.3A CN202210111096A CN114435775A CN 114435775 A CN114435775 A CN 114435775A CN 202210111096 A CN202210111096 A CN 202210111096A CN 114435775 A CN114435775 A CN 114435775A
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- induction coil
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- shielding layer
- electric field
- safety
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000004321 preservation Methods 0.000 title abstract description 16
- 230000006698 induction Effects 0.000 claims abstract description 87
- 230000005684 electric field Effects 0.000 claims abstract description 28
- 238000001514 detection method Methods 0.000 claims abstract description 24
- 229910052755 nonmetal Inorganic materials 0.000 claims abstract description 17
- 238000003860 storage Methods 0.000 claims abstract description 9
- 230000008859 change Effects 0.000 claims description 18
- 230000001360 synchronised effect Effects 0.000 claims description 12
- 230000004044 response Effects 0.000 claims description 6
- 230000002159 abnormal effect Effects 0.000 description 6
- 230000005672 electromagnetic field Effects 0.000 description 4
- 235000013305 food Nutrition 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 230000005686 electrostatic field Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000013024 troubleshooting Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000000747 cardiac effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000004320 controlled atmosphere Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 235000012055 fruits and vegetables Nutrition 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/74—Large containers having means for heating, cooling, aerating or other conditioning of contents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/02—Wall construction
- B65D90/022—Laminated structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/22—Safety features
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention relates to a fresh-keeping device which comprises a non-metal cabin, a shielding layer and a high-voltage electric field generating device, wherein the shielding layer is arranged on each surface of the inner side of the non-metal cabin, the high-voltage electric field generating device comprises at least one pair of electrodes arranged in the non-metal cabin and used for generating an alternating high-voltage electric field, a storage space is formed between the electrodes, the fresh-keeping device also comprises a safety device, the safety device comprises an induction module, a cable and a current detection module, the induction module comprises an induction coil, the induction coil is arranged on the outer side of the shielding layer and connected with the current detection module through the cable, and the induction coil and the cable are insulated from the shielding layer. The invention also relates to a safety device and a safety method for the preservation equipment.
Description
Technical Field
The invention relates to the technical field of preservation, in particular to preservation equipment, and a safety device and a safety method for the preservation equipment.
Background
When transporting goods such as fresh food and food over long distances, a low temperature method is generally adopted to maintain freshness of the goods. With the continuous development of the cold-chain logistics industry, fresh-keeping modes such as controlled atmosphere preservation, refrigeration humidification, refrigeration fresh-keeping and the like gradually appear, but if the storage and transportation time is too long, the conditions of poor fresh-keeping effect, even deterioration and the like can appear, and researches show that the activity of a plurality of food cells can be effectively prolonged by applying high-voltage electrostatic field impact on the basis of the existing refrigeration environment, namely the fresh-keeping time is prolonged, so that the high-voltage electric field auxiliary fresh-keeping technology is gradually valued by people. On the basis of traditional refrigeration, alternating high voltage is applied to the freezing storage bin, and an electrostatic field environment is formed through voltage vibration, so that the food can be kept fresh for a long time.
In the existing cold chain transportation process, a large number of cold chain cabin bodies (box bodies) for low-temperature storage are made of glass fiber materials due to the consideration of manufacturing cost or reduction of transportation load, and if a high-voltage electric field auxiliary technology is applied to the cabin bodies, dangerous factors are bound to exist. Alternating high voltage usually needs to reach several kilovolts, and from the safety perspective, if electromagnetic field leakage occurs, the alternating high voltage may interfere with electronic products and wireless environment around the cabin, even interfere with normal operation of a human cardiac pacemaker, and endanger life. The transportation cabin body is especially made of nonmetal materials, the electric field is very important to be isolated from the outside, and the wall surface of the cabin body is provided with good conductive materials, such as covering metal nets, metal plates and other components. However, in the transportation process of the alternating high-voltage low-temperature logistics cold chain cabin, due to long-time bumping and oscillation or movement and collision of objects inside the cabin, some shielding structures may be damaged, and the potential safety hazard that an internal electromagnetic field leaks outwards exists. Electromagnetic leakage cannot be sensed by human bodies, and particularly, the safety problem can not be discovered in time when the electromagnetic leakage is transported and used for a long time, so that more effective measures are needed to improve safety.
Disclosure of Invention
In view of the above, it is necessary to provide a preservation apparatus, and a safety device and a safety method for the preservation apparatus.
The utility model provides a fresh-keeping equipment, including the non-metallic cabin body, shielding layer and high-voltage electric field generating device, the shielding layer is located on each inboard face of the non-metallic cabin body, high-voltage electric field generating device is including locating the inside at least a pair of electrode in the non-metallic cabin body, be used for producing the alternation high-voltage electric field, form storage space between the electrode, fresh-keeping equipment still includes safety device, safety device is including the response module, cable and current detection module, the response module includes induction coil, induction coil lays in the outside of shielding layer, induction coil passes through the cable and is connected with the current detection module, induction coil and cable are insulating with the shielding layer.
Furthermore, the induction module also comprises a fixing piece for accommodating the induction coil.
Furthermore, the number of the induction modules is multiple, and each induction coil is accommodated in each fixing piece in a one-to-one correspondence manner.
Further, the induction coils are assigned with numbers, and the current detection module identifies each induction coil according to the numbers.
The utility model provides a safety device for fresh-keeping equipment, fresh-keeping equipment includes the non-metallic cabin body, the shielding layer, high-voltage electric field generating device, the shielding layer is located on each face of non-metallic cabin body inboard, high-voltage electric field generating device is including locating the inside at least a pair of electrode in the non-metallic cabin body, be used for producing the alternation high-voltage electric field, form storage space between the electrode, safety device is including the response module, cable and current detection module, the response module includes induction coil, induction coil lays in the shielding layer outside, induction coil passes through the cable and is connected with the current detection module, induction coil and cable are insulating with the shielding layer.
Furthermore, the induction module also comprises a fixing piece for accommodating the induction coil.
Furthermore, the number of the induction modules is multiple, and each induction coil is accommodated in each fixing piece in a one-to-one correspondence manner.
Further, the induction coils are assigned with numbers, and the current detection module identifies each induction coil according to the numbers.
A security method for freshness protection devices, comprising the steps of:
detecting and recording whether each induction coil has induction current or not when the high-voltage electric field generating device works each time;
comparing whether the induced current change is synchronous with the alternating high-voltage change in the nonmetal cabin in terms of time;
if the signals are synchronous, an alarm signal is sent out and the corresponding induction coil number is reported.
Further, the security method further comprises the steps of:
and setting a safety threshold, and if the measured induced current change is synchronous with the alternating high-voltage change in the nonmetal cabin in time and exceeds the safety threshold, sending an alarm signal and reporting the corresponding induction coil number.
According to the preservation equipment and the safety device and the safety method for the preservation equipment, whether synchronous induction current exists in the induction coil or not is detected by the aid of the current detection module, and safety problems such as electromagnetic leakage and the like exist on the outer side of the non-metal cabin body or not are found in time; by arranging the induction coils and distributing identity numbers to each induction coil, the detection space range can be enlarged, and abnormal positions can be timely positioned to accelerate problem troubleshooting.
Drawings
Fig. 1 is a schematic view of a refreshing apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic view of the installation position of the sensing module of fig. 1.
Fig. 3 is a schematic view of another installation position of the sensing module of fig. 1.
Fig. 4 is a flow chart of a security method for the freshness device of fig. 1.
Fig. 5 is another flow chart of a security method for the freshness device of fig. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a preservation apparatus 100 according to an embodiment of the present invention includes a non-metal chamber 10, a shielding layer 20, a high-voltage electric field generator (not shown), and a safety device 40. The shielding layer 20 covers each face 12 of the cabin 10.
In this embodiment, the non-metallic cabin 10 is a box made of six cubic rectangular freight non-metallic materials, and the six surfaces 12 are covered with shielding layers 20 to reduce or prevent the adverse effect of the high-voltage electric field radiation of the cabin 10 on the external environment, equipment and drivers and passengers of the cabin 10.
The high-voltage electric field generating device is used for generating a high-voltage electric field, and comprises at least one pair of electrodes 30, an alternating current power supply and a voltage boosting module (not shown), wherein the pair of electrodes 30 are oppositely arranged on two opposite surfaces 12 on the inner side of the cabin 10, a storage space for placing preserved articles (such as fruits and vegetables, meat, flower plants, biological tissues and the like) is formed between the pair of electrodes 30, and specifically, the pair of electrodes 30 can be oppositely arranged up and down, left and right or front and back.
The security device 40 includes a sensing module 42, a cable 44, and a current detection module 46.
Referring to fig. 2 and fig. 3, the sensing module 42 is disposed outside the shielding layer 20, that is, it can be disposed between the shielding layer 20 and the inner side of the non-metal cabin 10, or disposed outside the non-metal cabin 10. The sensing module 42 includes a sensing coil 420 and a fixing member 424. The induction coil 420 is a conductive coil that can induce a magnetic field, is insulated from the shielding layer 20, does not electrically contact with the shielding layer 20, and can be made of a metal wire or a good conductor material, and is located in a plane through which magnetic lines pass. The induction coil 420 is accommodated in the fixing member 424, and the fixing member 424 may be attached between the shielding layer 20 and the inner side of the non-metal cabin 10, or attached to the outer side of the non-metal cabin 10, is used for carrying, installing and protecting the induction coil 420, and is insulated from the induction coil 420, the shielding layer 20, the cable 44, and the like.
The number of the induction modules 42 is not limited to one, a plurality of induction coils 420 can be respectively arranged at a plurality of positions outside the cabin 10, each induction coil 420 is accommodated in a corresponding fixing part 424, each induction coil 420 has an identity number and corresponds to the installation position outside the cabin 10 where the induction coil is located, and the current detection module 46 can carry out value monitoring on the current change induced by each induction coil 420, so that the change of the electromagnetic environment at the periphery of the cabin 10 can be detected more accurately and quickly, and when an abnormality is found, the abnormal point can be quickly positioned to facilitate dangerous investigation and maintenance.
The cable 44 is insulated from the shielding layer 20, and is connected to the induction coil 420 and the current detection module 46 disposed outside the cabin 10, respectively, to form an induction current loop. The cable 44 may be a shielded cable.
The current detection module 46 has functions of comparing and reporting alarm signals, and can test the current variation value of the induction coil 420. When alternating high voltage (or pulse high voltage) is applied by the oppositely arranged high voltage electric field generating devices, the alternating electric field in the cabin 10 generates a corresponding alternating magnetic field, when the electromagnetic field in the cabin 10 leaks outwards, the induction coil 420 at the outer side of the cabin 10 near the leakage generates an induction current due to the change of the magnetic field, and the induction current is transmitted to the current detection module 46 outside the cabin 10 through the cable 44, and the change of the induction current is synchronous with the change of the electric field in the cabin. The more closely adjacent the leakage location, the more significant the induction coil 420 will induce current.
Although the induction coils 420 outside the cabin 10 may also be influenced by external electromagnetic waves to generate induced currents, the induced currents are usually very small and have characteristics that are easy to identify, an alarm safety threshold value can be set in advance, when the induced currents (including instantaneous sudden change values) of one or more induction coils 420 exceed the safety threshold value, the current detection module 46 sends out an alarm signal, and simultaneously gives out the number of the induction coil 420 where the abnormal induced current signal is located to indicate the position of an abnormal point, a driver and a passenger can timely find that the electromagnetic field inside the cabin 10 has abnormal influence on the external environment, and immediately perform safety inspection and emergency treatment, and in addition, the alarm signal can be transmitted to a monitoring center through a communication network and other modes, so that vehicles with potential safety hazards can be further inspected and treated.
Please refer to fig. 4, which is a safety method for the above-mentioned fresh-keeping apparatus according to an embodiment of the present invention, including the following steps:
a security method for freshness protection devices, comprising the steps of:
detecting and recording whether each induction coil has induction current or not when the high-voltage electric field generating device works each time;
comparing whether the induced current change is synchronous with the alternating high-voltage change in the nonmetal cabin in terms of time;
if the signals are synchronous, an alarm signal is sent out and the corresponding induction coil number is reported.
Referring to fig. 5, further, the security method further includes the following steps:
and setting a safety threshold, and if the measured induced current change is synchronous with the alternating high-voltage change in the nonmetal cabin in time and exceeds the safety threshold, sending an alarm signal and reporting the corresponding induction coil number.
According to the preservation equipment, the safety device and the safety method for the preservation equipment, whether synchronous induced current exists in the induction coil or not and whether the induced current exceeds a safety threshold or not is detected by the aid of the current detection module, and whether safety problems such as electromagnetic leakage exists on the outer side of the non-metal cabin or not is found in time; by arranging the induction coils and distributing identity numbers to each induction coil, the detection space range can be enlarged, and abnormal positions can be timely positioned to accelerate problem troubleshooting.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present invention.
Claims (10)
1. The utility model provides a fresh-keeping equipment, includes the non-metallic cabin body, shielding layer and high-voltage electric field generating device, the shielding layer is located on each face of the non-metallic cabin body inboard, high-voltage electric field generating device is including locating the inside at least a pair of electrode in the non-metallic cabin body for produce the alternation high-voltage electric field, form storage space, its characterized in that between the electrode: fresh-keeping equipment still includes safety device, safety device includes response module, cable and current detection module, the response module includes induction coil, induction coil lays the outside of shielding layer, induction coil passes through the cable with the current detection module is connected, induction coil reaches the cable with the shielding layer is insulating.
2. The freshness-preserving apparatus as claimed in claim 1, wherein: the induction module further comprises a fixing piece for accommodating the induction coil.
3. The freshness-preserving apparatus as claimed in claim 2, wherein: the induction modules are multiple in number, and each induction coil is accommodated in each fixing piece in a one-to-one correspondence mode.
4. The freshness-preserving apparatus of claim 1, wherein: the induction coils are assigned with numbers, and the current detection module identifies each induction coil according to the numbers.
5. The utility model provides a safety device for fresh-keeping equipment, fresh-keeping equipment includes the non-metallic cabin body, shielding layer, high-voltage electric field generating device, the shielding layer is located on each inboard face of the non-metallic cabin body, high-voltage electric field generating device is including locating the inside at least a pair of electrode in the non-metallic cabin body for produce the alternation high-voltage electric field, form storage space, its characterized in that between the electrode: the safety device comprises an induction module, a cable and a current detection module, wherein the induction module comprises an induction coil, the induction coil is arranged on the outer side of the shielding layer, the induction coil passes through the cable and is connected with the current detection module, and the induction coil reaches the cable and the shielding layer are insulated.
6. The safety device for freshness keeping equipment according to claim 5, wherein: the induction module further comprises a fixing piece for accommodating the induction coil.
7. The safety device for freshness retaining apparatus of claim 6, wherein: the number of the induction modules is multiple, and each induction coil is accommodated in each fixing piece in a one-to-one correspondence manner.
8. The safety device for freshness keeping equipment according to claim 5, wherein: the induction coils are assigned with numbers, and the current detection module identifies each induction coil according to the numbers.
9. A safety method for a freshness-preserving device as claimed in one of claims 1 to 4, comprising the steps of:
detecting and recording whether each induction coil has induction current or not when the high-voltage electric field generating device works each time;
comparing whether the induced current change is synchronous with the alternating high-voltage change in the nonmetal cabin in terms of time; and
if the signals are synchronous, an alarm signal is sent out and the corresponding induction coil number is reported.
10. The security method of claim 9, wherein: the security method further comprises the steps of:
and setting a safety threshold, and if the measured induced current change is synchronous with the alternating high-voltage change in the nonmetal cabin in time and exceeds the safety threshold, sending an alarm signal and reporting the corresponding induction coil number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210111096.3A CN114435775A (en) | 2022-01-29 | 2022-01-29 | Preservation equipment and safety device and safety method for preservation equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210111096.3A CN114435775A (en) | 2022-01-29 | 2022-01-29 | Preservation equipment and safety device and safety method for preservation equipment |
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| Publication Number | Publication Date |
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| CN114435775A true CN114435775A (en) | 2022-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210111096.3A Pending CN114435775A (en) | 2022-01-29 | 2022-01-29 | Preservation equipment and safety device and safety method for preservation equipment |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008215716A (en) * | 2007-03-05 | 2008-09-18 | Matsushita Electric Ind Co Ltd | Refrigerator |
| CN104482699A (en) * | 2014-12-23 | 2015-04-01 | 合肥华凌股份有限公司 | Refrigerator |
| CN204256052U (en) * | 2014-12-05 | 2015-04-08 | 中国国土资源航空物探遥感中心 | Electromagnetic field detection system |
| CN106359527A (en) * | 2016-11-08 | 2017-02-01 | 浙江大学舟山海洋研究中心 | High-voltage alternating-electric-field marine product preservation device |
| CN108657666A (en) * | 2018-05-04 | 2018-10-16 | 扬州通利冷藏集装箱有限公司 | Frozen products insulated container |
| CN109001294A (en) * | 2017-06-06 | 2018-12-14 | 中国石油天然气股份有限公司 | Pipeline inner wall detection device |
| CN110285625A (en) * | 2019-06-26 | 2019-09-27 | 长虹美菱股份有限公司 | A kind of electric field fresh-keeping refrigerator with function of shielding |
| WO2019214092A1 (en) * | 2018-05-11 | 2019-11-14 | 长虹美菱股份有限公司 | Refrigerator for preservation by means of electric field |
| CN212029974U (en) * | 2020-03-31 | 2020-11-27 | 江门市国海科技有限公司 | Refrigeration house system applying high-voltage electrostatic field preservation technology |
| CN215680769U (en) * | 2021-07-12 | 2022-01-28 | 网联清算有限公司 | Leakage detection device for storage battery |
| CN217295729U (en) * | 2022-01-29 | 2022-08-26 | 奥姆乐科技(上海)有限公司 | Fresh-keeping equipment and safety device for same |
-
2022
- 2022-01-29 CN CN202210111096.3A patent/CN114435775A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008215716A (en) * | 2007-03-05 | 2008-09-18 | Matsushita Electric Ind Co Ltd | Refrigerator |
| CN204256052U (en) * | 2014-12-05 | 2015-04-08 | 中国国土资源航空物探遥感中心 | Electromagnetic field detection system |
| CN104482699A (en) * | 2014-12-23 | 2015-04-01 | 合肥华凌股份有限公司 | Refrigerator |
| CN106359527A (en) * | 2016-11-08 | 2017-02-01 | 浙江大学舟山海洋研究中心 | High-voltage alternating-electric-field marine product preservation device |
| CN109001294A (en) * | 2017-06-06 | 2018-12-14 | 中国石油天然气股份有限公司 | Pipeline inner wall detection device |
| CN108657666A (en) * | 2018-05-04 | 2018-10-16 | 扬州通利冷藏集装箱有限公司 | Frozen products insulated container |
| WO2019214092A1 (en) * | 2018-05-11 | 2019-11-14 | 长虹美菱股份有限公司 | Refrigerator for preservation by means of electric field |
| CN110285625A (en) * | 2019-06-26 | 2019-09-27 | 长虹美菱股份有限公司 | A kind of electric field fresh-keeping refrigerator with function of shielding |
| CN212029974U (en) * | 2020-03-31 | 2020-11-27 | 江门市国海科技有限公司 | Refrigeration house system applying high-voltage electrostatic field preservation technology |
| CN215680769U (en) * | 2021-07-12 | 2022-01-28 | 网联清算有限公司 | Leakage detection device for storage battery |
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