A refrigerator using enhanced high-voltage electrostatic field

Abstract

The present invention discloses a refrigerator using an enhanced high-voltage electrostatic field, comprising a refrigerator body, a refrigeration module, a storage module, a high-voltage direct current power module and an enhanced high-voltage electrostatic field module, wherein the high-voltage direct current power module comprises an electrode plate, the refrigeration module is mounted on the upper part of the refrigerator body, the high-voltage direct current power module is mounted on the lower part of the refrigerator body, the storage module is mounted on the refrigeration module, the electrode plates are mounted on the top and bottom of the storage module respectively, and two electrode plates are connected to the positive terminal and the negative terminal of the high-voltage direct current power module respectively. The present invention can enhance the internal field strength of the material in the electric field by 10-20 times, and realizes the function of obtaining a larger electric field strength by using a smaller voltage. The invention can improve the freezing efficiency of the refrigerator, reduce the ice crystal size of the frozen items, and improve the freezing quality of the frozen food; it can also improve the refrigeration efficiency and fresh-keeping effect of refrigerated food, and extend the shelf life of refrigerated food.

Description

Technical Field

[0001] The present invention relates to the new technical field of freezing and refrigeration, and in particular to a refrigerator using an enhanced high-voltage electrostatic field. Background Art

[0002] High-voltage electrostatic field assisted freezing technology is a new type of rapid freezing technology. The application of physical field utilizes the specific response of water molecules to the physical field to reduce the thickness of the heat transfer and mass transfer boundary layer, control the freezing process, and promote the production of small and evenly distributed ice crystals, thereby reducing the damage to the food structure and reducing the loss of food nutrients after thawing.

[0003] In the prior art, an electrostatic discharger is installed in the cold storage room, the temperature-changing room and the freezer room, and the static discharge frequency is 40~70HZ, and the static field output voltage is 1500V~4000V. The installation position of the electrostatic discharger is the rear wall of each layer, the back plate foam layer, the bottom, the bottom foam layer, the top, the top foam layer, the door inner wall, and any position of the door body. The electrostatic discharge device is electrically connected to the transformer, but the circuit setting is not mentioned. In the prior art, the refrigerator door switch is connected in series to the power input end of the high-voltage electrostatic field generating device. When the door is opened, the power supply of the high-voltage electrostatic device is cut off. At the same time, the current detection sensor and the arc detection sensor are used as the feedback circuit. When a short circuit, electric shock and arc phenomenon occur, the main controller immediately cuts off the high-voltage output to ensure the safety of personnel and products, but the setting of the electrode and cavity is not mentioned. The prior art also discloses combining a high-voltage electrostatic field with a refrigerator compartment. Three shelves are arranged in the refrigerator compartment, and a conductive film is provided on the shelf base. All of them are connected to a high-voltage electrostatic generating controller through connecting wires. The high-voltage static electricity is cut off by opening and closing a touch switch connected to the refrigerator door.

[0004] The electric field strength of the existing technology is relatively weak, and there is no mention of how to increase the electric field strength inside the sample and how to deal with the large amount of static electricity on the electrode when the high voltage power supply is cut off. Therefore, there are safety hazards. Summary of the invention

[0005] The purpose of the present invention is to overcome the problems existing in the above prior art in improving the electric field strength of food and the efficiency and effect of food preservation, and to provide a refrigerator using an enhanced high-voltage electrostatic field.

[0006] The objective of the present invention is achieved through the following technical scheme: A refrigerator using an enhanced high-voltage electrostatic field, comprising a refrigerator body, a refrigeration module, a storage module, a high-voltage direct current power supply module and an enhanced high-voltage electrostatic field module, wherein the high-voltage direct current power supply module comprises an electrode plate, the refrigeration module is installed on the upper part of the refrigerator body, the high-voltage direct current power supply module is installed on the lower part of the refrigerator body, the storage module is installed on the refrigeration module, the electrode plates are respectively installed on the top and bottom of the storage module, one of the electrode plates is connected to the positive terminal of the high-voltage direct current power supply module, and the other electrode plate is connected to the negative terminal of the high-voltage direct current power supply module.

[0007] A better choice is that the electrode plate includes a metal electrode, an insulating silicone layer and two ultra-high dielectric ceramic layers, one of the ultra-high dielectric ceramic layers is connected to the top of the metal electrode, and the other ultra-high dielectric ceramic layer is connected to the bottom of the metal electrode. The metal electrode and the two ultra-high dielectric ceramic layers form an annular groove around them, and the insulating silicone layer fills the annular groove.

[0008] More preferably, the dielectric constant of the ultra-high dielectric ceramic layer is 3000-20000.

[0009] More preferably, the thickness of the ultra-high dielectric ceramic layer is 0.5-10 mm.

[0010] More preferably, the facing surfaces of the two electrode plates are concave surfaces that gradually become thinner toward the center.

[0011] More preferably, the center distance between two adjacent electrode plates is 5-35 cm.

[0012] A better choice, the high-voltage DC power supply module includes a regulated DC power supply, a high-voltage DC generator and a digital-display high-voltage pressure gauge, the high-voltage DC power supply module includes a regulated DC power supply and a high-voltage DC generator, the output end of the regulated DC power supply is connected to the input end of the high-voltage DC generator, the positive end of the high-voltage DC generator is connected to one of the electrode plates, the negative end of the high-voltage DC generator is connected to another of the electrode plates, and the digital-display high-voltage pressure gauge is connected to the signal output end of the high-voltage DC generator.

[0013] A better option also includes a switch collaborative work module, which includes a gate-driven power switch and a linked electrode electrostatic release time-limit switch, the regulated DC power supply is connected to the high-voltage DC generator through the gate-driven power switch, the linked electrode electrostatic release time-limit switch is connected to a ground wire, and the linked electrode electrostatic release time-limit switch is connected to the electrode plate.

[0014] A more preferred option is that the output voltage of the high voltage DC generator is 0-20000V.

[0015] A better option is that the storage module is made of plastic with a low dielectric constant.

[0016] The present invention has the following advantages and beneficial effects compared with the prior art:

[0017] 1. The present invention can enhance the internal field strength of the materials in the electric field by 10-20 times through the refrigeration module, storage module, high-voltage DC power module and enhanced high-voltage electrostatic field module, and realize the function of using a relatively small voltage to obtain a relatively large electric field strength; in terms of functional characteristics, the technology is not only energy-saving and efficient, but more importantly, in terms of the functions of refrigeration and freezing, it has the effect of improving the efficiency and effect of food preservation, improving the freezing characteristics of frozen food, that is, reducing the supercooling required for ice crystal nucleation of frozen food, shortening the freezing time, and reducing the ice crystal size of frozen items. Therefore, the nutritional value and sensory quality of food can be better maintained.

[0018] 2. The present invention adopts a switch collaborative working module, which includes a door-operated power switch and a linked electrode static electricity release time-limited switch. When the door of the refrigerator body is opened, the electrode plate is in a power-off state and the static electricity in the electrode plate is released at the same time, thereby ensuring the personal safety of the user and improving the safety of the refrigerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of a first refrigerated storage module and a first frozen storage module of a refrigerator using an enhanced high-voltage electrostatic field according to the present invention, each having two layers;

[0020] Figure 2 It is a schematic diagram of a first refrigerated storage module and a first frozen storage module of a refrigerator using an enhanced high-voltage electrostatic field according to the present invention;

[0021] Figure 3 It is a schematic diagram of a two-layer first refrigerated storage module of a refrigerator using an enhanced high-voltage electrostatic field according to the present invention;

[0022] Figure 4 It is a schematic structural diagram of the electrode plate of the enhanced high-voltage electrostatic field module of the present invention;

[0023] Markings of components in the accompanying drawings: 1. Refrigerator body; 2. Storage module; 21. First refrigerated storage module; 22. First frozen storage module; 23 Plastic drawer; 24. Second refrigerated storage module; 25. Second frozen storage module; 3. High-voltage DC power supply module; 31. Stabilized DC power supply; 32. High-voltage DC generator; 33. Digital high-voltage pressure gauge; 4. Enhanced high-voltage electrostatic field module; 41. Positive electrode plate; 42. Negative electrode plate; 43. Metal electrode; 44. Ultra-high dielectric ceramic layer; 45. Insulating silicone layer. DETAILED DESCRIPTION

[0024] The purpose of the present invention is further described in detail below with reference to the accompanying drawings and specific examples. The examples cannot be described one by one here, but the implementation methods of the present invention are not therefore limited to the following examples.

[0025] Ultra-high dielectric constant material: K 3000 materials; high dielectric constant materials: 100 K 3000 materials; dielectric constant materials: 20 K 100 materials; low dielectric constant materials: K 20 for the material; K is the dielectric constant.

[0026] Embodiment 1

[0027] like Figure 1 As shown, a refrigerator using an enhanced high-voltage electrostatic field includes a refrigerator body 1, a refrigeration module (not shown), a storage module 2, a high-voltage DC power module 3 and an enhanced high-voltage electrostatic field module 4, wherein the enhanced high-voltage electrostatic field module 4 includes an electrode plate, which is installed on the upper part of the refrigerator body 1, the high-voltage DC power module 3 is installed on the lower part of the refrigerator body 1, the refrigeration module is installed on the upper part of the refrigerator body 1, the storage module 2 is installed in the inner cavity of the refrigeration module, the electrode plate is installed on the top and bottom of the storage module 2, the electrode plate and the two surfaces of the storage module 2 are seamlessly attached, one electrode plate is connected to the positive terminal of the high-voltage DC power module 3, and the other electrode plate is connected to the negative terminal of the high-voltage DC power module 3. The refrigeration module includes a refrigeration module and a freezing module, the refrigeration module is used to provide a cold source for the first refrigerated storage module 21, and the freezing module is used to provide a cold source for the first frozen storage module 22.

[0028] The refrigerator body 1 also includes a power switch and a linkage electrode electrostatic release time-limit switch, which are installed on the refrigerator body 1. The grounding end of the linkage electrode electrostatic release time-limit switch is connected to a ground wire. When the door of the refrigerator body 1 is opened, the power switch is automatically disconnected (that is, the high-voltage DC generator 32 and the regulated DC power supply 31 are in a disconnected state). After a lag time of 0.3S, the linkage electrode electrostatic release time-limit switch is triggered to close, that is, the electrode plate is connected to the ground wire for a limited time, and the time limit for the electrode plate to release static electricity is 3 seconds; when the static electricity release time limit ends, the linkage electrode electrostatic release time-limit switch is in an off state (the electrode plate is disconnected from the ground wire); when the refrigerator door is closed, the power switch is in a closed state (that is, the high-voltage DC generator 32 is connected to the regulated DC power supply 31), and the linkage electrode electrostatic release time-limit switch is in a disconnected state from the ground wire.

[0029] The enhanced high-voltage electrostatic field module 4 includes 6 electrode plates, including 4 positive electrode plates 41 and 2 negative electrode plates 42; the refrigeration module includes 2 cold storage modules and 2 freezing modules, and the cold storage module (not shown in the figure) and the freezing module (not shown in the figure) are both installed inside the refrigerator body 1, and the storage module 2 includes 2 first cold storage modules 21 and 2 first freezing storage modules 22. The first cold storage module 21 is installed in the cold storage module, and the first freezing storage module 22 is installed in the freezing module. The two first refrigerated storage modules 21 are provided with three electrode plates, the first electrode plate is located at the top of the first first refrigerated storage module 21, and serves as a positive electrode plate 41; the second electrode plate is located between the two first refrigerated storage modules 21, and serves as a negative electrode plate 42; the third electrode plate is located at the bottom of the second first refrigerated storage module 21, and serves as a positive electrode plate 41; the first electrode plate and the third electrode plate are both connected to the positive end of a high-voltage DC generator 32 through a high-voltage insulated wire, and the second electrode plate is connected to the negative end of a high-voltage DC generator 32 through a high-voltage insulated wire. The two first frozen storage modules 22 are also provided with three electrode plates, and the fourth electrode plate, the fifth electrode plate, and the sixth electrode plate are distributed in the same positions in the two first frozen storage modules 22 as in the first refrigerated storage module 21, the fourth electrode plate and the sixth electrode plate are connected to the positive end of another high-voltage DC generator 32 through a high-voltage insulated wire, and the fifth electrode plate is connected to the negative end of another high-voltage DC generator 32 through a high-voltage insulated wire.

[0030] The first refrigerated storage module 21 and the first frozen storage module 22 are plastic drawers 23 that can be pulled in and out, and are made of a 2mm thick plastic material with a low dielectric constant. The rest, such as refrigeration (including refrigeration and freezing), air circulation, heat preservation, heat dissipation, and outer frame, refer to the manufacturing method of the refrigerator in the prior art.

[0031] The high-voltage DC power supply module 3 includes two high-voltage DC generators 32 (output voltage is 0-16000V), one digital high-voltage pressure gauge 33 and one stabilized DC power supply 31 (input voltage 220V, output voltage 0-12V), the input end of the high-voltage regulator is connected to the output end of the high-voltage DC generator 32, the input ends of the two high-voltage DC generators 32 are connected in parallel and then connected to the output end of the stabilized DC power supply 31, the grounding end of the high-voltage DC generator 32 is connected to the ground wire, the high-voltage DC generator 32 is connected to the electrode plate (including the positive electrode plate 41 and the negative electrode plate 42) through a high-voltage insulated wire, and the signal output end of the high-voltage DC generator 32 is connected to the digital high-voltage pressure gauge 33. The high-voltage insulated wire used in this embodiment is a 40 kV-resistant wire.

[0032] The function of the high-voltage DC generator 32 is to output 0~20kV DC high voltage after the 0-30V DC voltage is rectified, filtered, multi-resonant converted and processed by a multi-stage voltage doubling rectifier circuit; the function of the digital high-voltage pressure gauge 33 is to display the current high voltage voltage value; the function of the regulated DC power supply 31 is to convert the 220V AC voltage into a 0-12V DC voltage.

[0033] like Figure 4 As shown, the electrode plate includes a metal electrode 44, an insulating silicone layer 43 and two ultra-high dielectric ceramic layers 45, one ultra-high dielectric ceramic layer 45 is connected to the top of the metal electrode 44, and the other ultra-high dielectric ceramic layer 45 is connected to the bottom of the metal electrode 44. The four sides of the metal electrode 44 and the two ultra-high dielectric ceramic layers 45 form an annular groove, and the insulating silicone layer 43 is filled in the annular groove, and the insulating silicone layer 43 completely covers the four sides of the metal electrode 44. The side of the high dielectric ceramic 45 layer away from the metal electrode 44 (the opposite side of the two adjacent positive electrode plates 41 and the negative electrode plate) is shaped as a concave surface (thickness 10-2mm, dielectric constant 18000) that is gradually thinned toward the center. The electric field strength inside the material in the electric field is better enhanced, and the uniformity of the electric field will be better uniformized. The material of the metal electrode 44 is silver, and the material of the insulating silicone layer 43 is 704 silicone rubber with a thickness of 2mm. The length of the electrode plate is 60 cm, the width is 24 cm, and the thickness is 0.5-1.2 cm. The electrode plate includes three positive electrode plates 41 and three negative electrode plates 42. The center distance between two adjacent electrode plates (positive electrode plates and negative electrode plates) of the first refrigerated storage module 21 is 30 cm, and the center distance between two adjacent electrode plates (positive electrode plates and negative electrode plates) of the first frozen storage module 22 is 20 cm.

[0034] The function of the insulating silicone layer 43 is to achieve an insulating effect for the metal electrode 44; the function of the metal electrode 44 is to apply voltage; the function of the ultra-high dielectric ceramic layer 45 is to increase the electric field strength of the electrode plate. Ultra-high dielectric ceramics mainly include barium lanthanum titanium ceramics, zinc magnesium titanate dielectric ceramics, tantalum oxide-zirconium tin titanate ceramics, etc. The preparation of ultra-high dielectric ceramics can refer to the existing technology.

[0035] When 26 cm of water is placed in the first refrigerated storage module 21, under normal working conditions, the electric field strength of the first refrigerated storage module 21 is 3.6×10 5 V / m, which is more than 15 times higher than the electric field strength without ultra-high dielectric constant materials. When 18 cm of water is placed in the first refrigerated storage module 22, under normal working conditions, the electric field strength of the first refrigerated storage module 22 is 6.6×10 5 V / m, which is more than 16 times the electric field strength of the electric field without ultra-high dielectric constant material.

[0036] Among fruits and vegetables, Guiwei lychees harvested on sunny days, 80 to 90% ripe, free of mechanical damage and pests and diseases were selected as raw materials. 50 lychees were placed in the first cold storage module 21 of the refrigerator for fresh-keeping storage. Compared with the results of high-voltage electric field assisted cold storage without high dielectric material reinforcement, the internal field of the material in the electric field was enhanced by about 10 times, the respiration and physiological metabolism of the lychees were reduced, softening was inhibited, browning and water loss were slowed down, and the trend of color development, soluble sugar and titratable acid content was significantly reduced or delayed due to the presence of high dielectric material reinforced high-voltage electrostatic field. When the lychees were stored for 24 days, the mass loss rate of the lychees was 1.62%, the mass fraction of soluble solids was 3.32%, the vitamin C content was 0.52 mg / g, the mass fraction of total acid was 0.072%, and the good fruit rate was 94%, which far exceeded the 5-day storage period of conventional foam boxes with ice and sealed transportation, and was extended by 4 to 7 days compared with the second cold storage module.

[0037] Embodiment 2

[0038] Except for the following technical features, the other technical features of this embodiment are the same as those of the first embodiment:

[0039] like Figure 2 As shown, in this embodiment, after the power switch is automatically disconnected, the lag time is replaced by 0.1 second instead of 0.3 second, and the time for the electrode plate to release static electricity is replaced by 1 second instead of 3 seconds.

[0040] The material of the metal electrode 44 in this embodiment is titanium instead of silver.

[0041] The output voltage of the regulated DC power supply 31 in this embodiment is 0-10V instead of 0-12V.

[0042] The output voltage of the high voltage DC generator 32 in this embodiment is 0-13000V instead of 0-16000V.

[0043] In this embodiment, one second refrigerated storage module 24 and one second frozen storage module 25 replace one first refrigerated storage module 21 and one first frozen storage module 22; the second refrigerated storage module 24 and the second frozen storage module 25 are not equipped with electrode plates on the top and bottom, and the second refrigerated storage module 24 and the second frozen storage module 25 are plastic drawers of the prior art, and specific reference is made to the manufacturing method of refrigerators in the prior art. The height of the second refrigerated storage module 24 is 17 cm, and the height of the second frozen storage module 25 is 13 cm. The enhanced high-voltage electrostatic field module 3 includes 4 electrode plates, including 2 positive electrode plates 41 and 2 negative electrode plates 42. The first positive electrode plate 41 is seamlessly attached to the top of the first refrigerated storage module 21, and the first negative electrode plate 42 is seamlessly attached to the bottom of the first refrigerated storage module 21; the first positive electrode plate 41 is connected to the positive terminal of a high-voltage DC generator 32, and the first negative electrode plate 42 is connected to the negative terminal of a high-voltage DC generator 32; the second positive electrode plate 41 is seamlessly attached to the top of the first frozen storage module 22, and the second negative electrode plate 42 is seamlessly attached to the bottom of the first frozen storage module 22; the second positive electrode plate 41 is connected to the positive terminal of another high-voltage DC generator 32, and the second negative electrode plate 42 is connected to the negative terminal of another high-voltage DC generator 32.

[0044] In the present embodiment, the thickness of the plastic drawer 23 made of the plastic material with a low dielectric constant in the first refrigerated storage module 21 and the first frozen storage module 22 is 0.5 mm instead of 2 mm, so that the strength of the plastic drawer 23 is improved.

[0045] In this embodiment, the center distance between two adjacent electrode plates (positive electrode plate 41 and negative electrode plate 42) of the first refrigerated storage module 21 is 20 cm instead of 30 cm, and the center distance between two adjacent electrode plates (positive electrode plate 41 and negative electrode plate 42) of the first frozen storage module 22 is 16 cm instead of 20 cm; the length of the electrode plate is 66 cm, the width is 26 cm and the thickness is 0.5-1.0 cm instead of the length of 60 cm, the width is 24 cm and the thickness is 0.5-1.2 cm.

[0046] When the first refrigerated storage module 21 is placed in water with a height of 18 cm, under normal working conditions, the electric field strength at the center of each layer of the first refrigerated storage module 21 is 3.0×10 5 V / m, which is more than 12.5 times higher than the electric field strength of the electric field without ultra-high dielectric constant materials. When the first refrigerated storage module 22 is placed in water with a height of 14 cm, under normal working conditions, the electric field strength of each layer of the first refrigerated storage module 22 is 5.4×105 V / m, which is more than 13 times higher than the electric field strength of the electric field without ultra-high dielectric constant material; the fresh-keeping performance of the second refrigerated storage module 24 and the freezing performance of the second frozen storage module 25 of the refrigerator are consistent with those of the refrigerator in the prior art.

[0047] Fresh live shrimps were selected as raw materials from shrimp foods, 30-35 g / prawn, and stored in the first cold storage module 21 of the refrigerator. Compared with the refrigeration results of the refrigerator in the prior art, the internal field of the material in the electric field was enhanced by about 9 times, the total number of colonies in the shrimp meat was suppressed, the trend of changes in the volatile basic nitrogen value and the K value slowed down, the juice loss rate of the shrimp meat was kept at a low level, the PPO enzyme activity was effectively inhibited, thereby inhibiting the browning of the shrimp. Compared with the refrigerator in the prior art, the preservation function can extend the shrimp preservation time by 4 days, that is, to 8 days. On the 8th day, the total number of colonies in the shrimp meat was 4.01 g (CFU / g), the volatile basic nitrogen was 21.2 mg / 100 g, which did not exceed the safety limit of volatile basic nitrogen of fresh aquatic products 30 mg / 100 g, the K value was 53%, the juice loss rate was 2.1%, and all aspects of the preservation indicators were significantly better than the preservation effect of the refrigerator in the prior art.

[0048] Embodiment 3

[0049] Except for the following technical features, the other technical features of this embodiment are the same as those of the first embodiment:

[0050] like Figure 3 As shown, in this embodiment, after the power switch is automatically disconnected, the lag time is replaced by 0.5 seconds instead of 0.3 seconds.

[0051] The material of the metal electrode 44 in this embodiment is gold instead of silver.

[0052] In this embodiment, the number of the first refrigerated storage modules 22 is replaced by 0 instead of 2.

[0053] The output voltage of the regulated DC power supply 31 in this embodiment is 0-30V instead of 0-12V.

[0054] The output voltage of the high voltage DC generator 32 in this embodiment is 18000V instead of 16000V.

[0055] In this embodiment, the center distance between two adjacent electrode plates (a positively charged electrode plate and a negatively charged electrode plate) of the first refrigerated storage module 21 is 25 cm instead of 30 cm.

[0056] Select Guiwei lychees harvested on sunny days, 80 to 90% mature, free of mechanical damage and pests and diseases as raw materials, and place 50 lychees in the first cold storage module 21 of the refrigerator for fresh storage. Compared with the results of the electric field without ultra-high dielectric constant materials, the strength of the internal field of the material in the electric field strengthened by the high dielectric constant material increases by about 10 times, the respiration and physiological metabolism of the lychees are reduced, softening is inhibited, browning and water loss are slowed down, and the trend of color development, soluble sugar and titratable acid content is also significantly reduced or delayed due to the presence of the high-voltage electrostatic field strengthened by the high dielectric constant material. When the lychees are stored for 24 days, the mass loss rate of the lychees is 1.59%, the mass fraction of soluble solids is 3.35%, the vitamin C content is 0.54 mg / g, the mass fraction of total acid is 0.070%, and the good fruit rate is 95%, which is 4 to 7 days longer than the electric field assisted refrigeration without ultra-high dielectric constant materials.

[0057] Embodiment 4

[0058] Except for the following technical features, the other technical features of this embodiment are the same as those of the first embodiment:

[0059] The material of the metal electrode 44 in this embodiment is platinum instead of silver.

[0060] In this embodiment, the center distance between two adjacent electrode plates (with the positive electrode plate 41 and the negative electrode plate 42) of the first refrigerated storage module 21 is 35 cm instead of 30 cm, and the center distance between two adjacent electrode plates (with the positive electrode plate 41 and the negative electrode plate 42) of the first frozen storage module 22 is 35 cm instead of 20 cm.

[0061] The dielectric constant of the ultra-high dielectric ceramic layer 45 in this embodiment is 15,000 instead of 18,000.

[0062] The thickness of the high dielectric ceramic 45 in this embodiment is 10-1.5 mm instead of 10-2 mm.

[0063] Among the meat, the tenderloin was selected after 24 hours of cooling and acid removal, cut into 5 cm × 5 cm × 4 cm, about 140 g of meat blocks, and placed in the first frozen storage module 22 of the refrigerator for frozen storage. When the central temperature of the meat sample dropped to -10 ℃, the meat sample was taken out and placed in the first cold storage module 21 for thawing. When the central temperature of the meat sample reached 1~4 ℃, the meat sample was considered to be completely thawed. Compared with the results of high-voltage electric field assisted refrigeration without high dielectric material reinforcement, the internal field of the material in the electric field was enhanced by about 10 times, the freezing time of pork was shortened, the supercooling degree was reduced, the ice crystal size was reduced, and the color of the meat sample was better maintained. The thawing meat juice loss rate, cooking loss rate and protein quality fraction in the thawing juice were also significantly reduced due to the presence of the high-voltage electrostatic field reinforced by high dielectric materials. The freezing time of pork was 610 min, and the ice crystal size was reduced to 10.2um. The brightness, redness and color saturation values ​​of the frozen meat sample were 34.0, 18.1 and 20.3, respectively. After thawing, they were 39.3, 20.6 and 24.0, respectively. The thawing juice loss rate was 3.89%, the protein mass fraction in the thawing juice was 8.91%, the cooking loss was 19.78%, and the chewiness increased by 32.68 N. The integrity of pork cells was better maintained, the quality deterioration of pork during freezing and thawing was alleviated, and the quality of thawed pork was improved.

[0064] Embodiment 5

[0065] Except for the following technical features, the other technical features of this embodiment are the same as those of the first embodiment:

[0066] The material of the metal electrode 44 in this embodiment is copper instead of silver.

[0067] The output voltage of the high voltage DC generator 32 in this embodiment is 0-20000V.

[0068] In this embodiment, the center distance between two adjacent electrode plates (with the positive electrode plate 41 and the negative electrode plate 42) of the first refrigerated storage module 21 is 5 cm instead of 30 cm, and the center distance between two adjacent electrode plates (with the positive electrode plate 41 and the negative electrode plate 42) of the first frozen storage module 22 is 5 cm instead of 20 cm.

[0069] The dielectric constant of the ultra-high dielectric ceramic layer 45 in this embodiment is 3000 instead of 18000.

[0070] The thickness of the high dielectric ceramic 45 in this embodiment is 5-0.5 mm instead of 10-2 mm.

[0071] Embodiment 6

[0072] Except for the following technical features, the other technical features of this embodiment are the same as those of the first embodiment:

[0073] The material of the metal electrode 44 in this embodiment is aluminum instead of silver.

[0074] The dielectric constant of the ultra-high dielectric ceramic layer 45 in this embodiment is 20,000 instead of 18,000.

[0075] The above specific implementation modes are preferred embodiments of the present invention and cannot be used to limit the present invention. Any other changes or other equivalent replacement methods that do not deviate from the technical solution of the present invention are included in the protection scope of the present invention.

Claims

1. A refrigerator using an enhanced high-voltage electrostatic field, characterized in that: The refrigerator comprises a refrigerator body, a refrigeration module, a storage module, a high-voltage direct current power module and an enhanced high-voltage electrostatic field module, wherein the enhanced high-voltage electrostatic field module comprises an electrode plate connected to the positive terminal of the high-voltage direct current power module and an electrode plate connected to the negative terminal of the high-voltage direct current power module, the refrigeration module is installed on the upper part of the refrigerator body, the high-voltage direct current power module is installed on the lower part of the refrigerator body, the storage module is installed in the inner cavity of the refrigeration module, and the electrode plates are respectively installed on the top and bottom of the storage module; The electrode plate includes a metal electrode, an insulating silicone layer and two ultra-high dielectric ceramic layers, one ultra-high dielectric ceramic layer is connected to the top of the metal electrode, and the other ultra-high dielectric ceramic layer is connected to the bottom of the metal electrode. The metal electrode and the two ultra-high dielectric ceramic layers form an annular groove, and the insulating silicone layer fills the annular groove. The dielectric constant of the ultra-high dielectric ceramic layer is 3000-20000; The thickness of the ultra-high dielectric ceramic layer is 0.5-10 mm; The facing surfaces of two adjacent electrode plates are concave surfaces that gradually become thinner toward the center. The center distance between two adjacent electrode plates is 5-35cm.

2. The refrigerator using an enhanced high-voltage electrostatic field according to claim 1, characterized in that: The high-voltage DC power supply module includes a stabilized DC power supply, a high-voltage DC generator and a digital-display high-voltage pressure gauge, wherein the output end of the stabilized DC power supply is connected to the input end of the high-voltage DC generator, the positive terminal and the negative terminal of the high-voltage DC generator are both connected to corresponding electrode plates, and the digital-display high-voltage pressure gauge is connected to the signal output end of the high-voltage DC generator.

3. The refrigerator using an enhanced high-voltage electrostatic field according to claim 2, characterized in that: It also includes a switch collaborative work module, which includes a gate-driven power switch and a linked electrode electrostatic release time-limit switch. The regulated DC power supply is connected to the high-voltage DC generator through the gate-driven power switch, the linked electrode electrostatic release time-limit switch is connected to a ground wire, and the linked electrode electrostatic release time-limit switch is connected to an electrode plate.

4. The refrigerator using an enhanced high-voltage electrostatic field according to claim 1, characterized in that: The storage module is made of plastic with a low dielectric constant.

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