CN112344617A

CN112344617A - Refrigerator applying intensified high-voltage electrostatic field

Info

Publication number: CN112344617A
Application number: CN202011095408.3A
Authority: CN
Inventors: 王启军; 孙大文; 王立爽; 王强
Original assignee: South China University of Technology SCUT
Current assignee: South China University of Technology SCUT
Priority date: 2020-10-14
Filing date: 2020-10-14
Publication date: 2021-02-09

Abstract

The invention discloses a refrigerator applying an enhanced high-voltage electrostatic field, which comprises a refrigerator main 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 plate electrodes, the refrigeration module is arranged at the upper part of the refrigerator main body, the high-voltage direct-current power supply module is arranged at the lower part of the refrigerator main body, the storage module is arranged at the refrigeration module, the plate electrodes are respectively arranged at the top and the bottom of the storage module, and the two plate electrodes are respectively connected with the positive electrode end and the negative electrode. The invention can strengthen the field intensity inside the material in the electric field by 10-20 times, and realizes the function of obtaining larger field intensity by adopting smaller voltage. The invention can improve the freezing efficiency of the refrigerator, reduce the ice crystal size of the frozen object and improve the freezing quality of the frozen food; can also improve the refrigeration efficiency and the fresh-keeping effect of the refrigerated food and prolong the shelf life of the refrigerated food.

Description

Refrigerator applying intensified high-voltage electrostatic field

Technical Field

The invention relates to the new technical field of freezing and refrigeration, in particular to a refrigerator applying an enhanced high-voltage electrostatic field.

Background

The high-voltage electrostatic field auxiliary freezing technology is a novel quick freezing technology. The application of the physical field reduces the thickness of a heat transfer and mass transfer boundary layer by utilizing the specific response of water molecules to the physical field, controls the freezing process and promotes the generation of small and uniformly distributed ice crystals, thereby reducing the damage to the texture structure of the food and having less loss of nutritional ingredients of the food after being thawed.

In the prior art, electrostatic releasers are installed in a refrigerating chamber, a temperature-changing chamber and a freezing chamber, the frequency of released static electricity is 40-70 HZ, the output voltage of an electrostatic field is 1500-4000V, the installation positions of the electrostatic releasers are any positions of the rear wall of each layer, the inside and the bottom of a rear backboard foaming layer, the inside and the bottom of a bottom foaming layer, the inside and the top foaming layers, the inner wall of a door and a door body, and the electrostatic releasers are electrically connected with a transformer, but the arrangement of a circuit is not mentioned. Among the prior art, the refrigerator door switch is established ties at high-voltage electrostatic field generating device's power input end, when the door was opened, cuts off high-voltage electrostatic device's power, uses current detection sensor and electric arc detection sensor simultaneously as feedback circuit, when short circuit, electric shock and electric arc phenomenon appear, and main control unit cuts off high-voltage output at once, ensures the safety of personnel and product, but does not mention the setting of electrode and cavity. The prior art also discloses that the high-voltage electrostatic field is combined with a refrigerating chamber of a refrigerator, three layer frames are arranged in the refrigerating chamber, conductive films are arranged on a layer frame base body and are connected with a high-voltage electrostatic generation controller through connecting wires, and the high-voltage electrostatic is controlled to be cut off through the opening and closing of a touch switch connected with a refrigerating door.

The existing technology is weak in electric field intensity, and how to improve the internal electric field intensity of a sample and how to treat a large amount of static electricity on an electrode after a high-voltage power supply is cut off are not mentioned, so that potential safety hazards exist.

Disclosure of Invention

The invention aims to overcome the problems of improving the electric field intensity of food and the food fresh-keeping efficiency and effect in the prior art, and provides a refrigerator applying an enhanced high-voltage electrostatic field.

The purpose of the invention is realized by the following technical scheme: the utility model provides an use refrigerator of reinforceing high voltage electrostatic field, includes refrigerator main part, refrigeration module, storing module, high voltage direct current power module and reinforces high voltage electrostatic field module, high voltage direct current power module includes the plate electrode, the refrigeration module install in the upper portion of refrigerator main part, high voltage direct current power module install in refrigerator main part lower part, storing module install in the refrigeration module, the plate electrode install respectively in the top and the bottom of storing module, one the plate electrode with high voltage direct current power module's positive terminal is connected, another the plate electrode with high voltage direct current power module's negative pole end is connected.

Preferably, the electrode plate comprises a metal electrode, an insulating silica gel layer and two ultrahigh dielectric ceramic layers, one ultrahigh dielectric ceramic layer is connected with the top of the metal electrode, the other ultrahigh dielectric ceramic layer is connected with the bottom of the metal electrode, an annular groove is formed by surrounding the metal electrode and the two ultrahigh dielectric ceramic layers, and the insulating silica gel layer is filled in the annular groove.

Preferably, the dielectric constant of the ultra-high dielectric ceramic layer is 3000-.

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

Preferably, the opposite surfaces of the two electrode plates are concave surfaces with the peripheries gradually thinner towards the center.

Preferably, the distance between the centers of the two adjacent electrode plates is 5-35 cm.

More preferred selection, high voltage direct current power supply module includes steady voltage DC power supply, high voltage direct current generator and digital display high voltage load meter, high voltage direct current power supply module includes steady voltage DC power supply and high voltage direct current generator, steady voltage DC power supply's output with high voltage direct current generator's input is connected, high voltage direct current generator's positive terminal with one the plate electrode is connected, high voltage direct current generator's negative pole end and another the plate electrode is connected, digital display high voltage load meter with high voltage direct current generator's signal output part connect.

Preferably, the switch cooperative work module comprises a gate power switch and a linkage electrode electrostatic discharge time limit switch, the voltage-stabilizing direct-current power supply is connected with the high-voltage direct-current generator through the gate power switch, the linkage electrode electrostatic discharge time limit switch is connected with a ground wire, and the linkage electrode electrostatic discharge time limit switch is connected with the electrode plate.

Preferably, the output voltage of the high-voltage direct current generator is 0-20000V.

Preferably, the storage module is made of plastic with a low dielectric constant.

Compared with the prior art, the invention has the following advantages and beneficial effects:

1. according to the invention, the field intensity inside the material in the electric field can be enhanced by 10-20 times through the refrigeration module, the storage module, the high-voltage direct-current power supply module and the enhanced high-voltage electrostatic field module, so that the function of obtaining larger electric field intensity by adopting smaller voltage is realized; in terms of functional characteristics, the technology not only has the characteristics of energy conservation and high efficiency, but also has the advantages of improving the food fresh-keeping efficiency and effect and improving the freezing characteristics of the frozen food in terms of refrigeration and freezing functions, namely reducing the supercooling degree required by the nucleation of ice crystals of the frozen food, shortening the freezing time and reducing the size of the ice crystals of the frozen goods. Therefore, the nutritional value and the sensory quality of the food can be better maintained.

2. According to the invention, the switch cooperative working module comprises the door power switch and the linkage electrode static electricity release time-limited switch, when the door of the refrigerator main body is opened, the electrode plate is in a power-off state, and static electricity in the electrode plate is released at the same time, so that the personal safety of a user is ensured, and the safety of the refrigerator is improved.

Drawings

Fig. 1 is a schematic view of each of 2 layers of a first refrigerated storage module and a first frozen storage module of a refrigerator applying an enhanced high-voltage electrostatic field according to the present invention;

FIG. 2 is a schematic view of each of the first refrigerated storage module and the first frozen storage module of the refrigerator applying an enhanced high voltage electrostatic field according to the present invention at 1 layer;

FIG. 3 is a schematic view of a first refrigerating storage module with 2 layers of the refrigerator applying an enhanced high-voltage electrostatic field according to the present invention;

FIG. 4 is a schematic diagram of the electrode plate of the intensified high-voltage electrostatic field module according to the present invention;

reference numbers for parts in the drawings: 1. a refrigerator main body; 2. a storage module; 21. a first refrigerated storage module; 22. a first refrigerated storage module; 23 a plastic drawer; 24. a second refrigerated storage module; 25. a second refrigerated storage module; 3. a high-voltage direct-current power supply module; 31. a regulated DC power supply; 32. a high voltage DC generator; 33. a digital display high-voltage pressure gauge; 4. a reinforced high-voltage electrostatic field module; 41. a positive electrode plate; 42. a negative electrode plate; 43. a metal electrode; 44. an ultra-high dielectric ceramic layer; 45. and an insulating silica gel layer.

Detailed Description

The following describes the object of the present invention in further detail with reference to the drawings and specific examples, which are not repeated herein, but the embodiments of the present invention are not limited to the following examples.

Ultra-high dielectric constant material: k is more than or equal to 3000; high dielectric constant material: k is more than or equal to 100 and less than 3000; medium dielectric constant material: k is more than or equal to 20 and less than 100; low dielectric constant material: a material with K < 20; k is a dielectric constant.

Example one

As shown in fig. 1, a refrigerator applying an intensified high-voltage electrostatic field comprises a refrigerator main body 1, a refrigeration module (not shown in the figure), a storage module 2, a high-voltage direct-current power supply module 3 and an intensified high-voltage electrostatic field module 4, wherein the intensified high-voltage electrostatic field module 4 comprises a plate electrode, the plate electrode is mounted on the upper portion of the refrigerator main body 1, the high-voltage direct-current power supply module 3 is mounted on the lower portion of the refrigerator main body 1, the refrigeration module is mounted on the upper portion of the refrigerator main body 1, the storage module 2 is mounted in an inner cavity of the refrigeration module, the plate electrode is mounted on the top and the bottom of the storage module 2, the plate electrode is seamlessly attached to two surfaces of the storage module 2, one plate electrode is connected. The refrigeration module comprises a refrigeration module and a freezing module, the refrigeration module is used for providing a cold source for the first refrigeration storage module 21, and the freezing module is used for providing the cold source for the first freezing storage module 22.

The refrigerator main body 1 further comprises a power switch and a linkage electrode electrostatic discharge time limit switch, the power switch and the linkage electrode electrostatic discharge time limit switch are installed on the refrigerator main body 1, the grounding end of the linkage electrode electrostatic discharge time limit switch is connected with a ground wire, when the door of the refrigerator main body 1 is opened, the power switch is automatically disconnected (namely the high-voltage direct current generator 32 and the voltage-stabilizing direct current power supply 31 are in a disconnected state), after the lag time is 0.3S, the linkage electrode electrostatic discharge time limit switch is triggered to be closed, namely the electrode plate is in time-limited connection with the ground wire, and the time for releasing the static electricity by the electrode plate is; when the electrostatic discharge time limit is finished, the linked electrode electrostatic discharge time limit switch is in a disconnected state (the electrode plate is disconnected with the ground wire); when the door of the refrigerator is closed, the power switch is in a closed state (namely the high-voltage direct current generator 32 is connected with the stabilized direct current power supply 31), and the linkage electrode static electricity release time-limiting switch is in an open state with the ground wire.

The intensified high-voltage electrostatic field module 4 comprises 6 electrode plates, wherein the electrode plates comprise 4

positive electrode plates

41 and 2 negative electrode plates 42; the refrigeration module comprises 2 refrigeration modules and 2 freezing modules, the refrigeration modules (not shown in the figure) and the freezing modules (not shown in the figure) are both installed inside the refrigerator main body 1, and the storage module 2 comprises 2 first

refrigeration storage modules

21 and 2 first freezing storage modules 22. The first refrigerated storage module 21 is mounted within the refrigerated module and the first frozen storage module 22 is mounted within the frozen module. 3 electrode plates are arranged on the 2 first refrigerated storage modules 21, and the first electrode plate is positioned at the top of the first refrigerated storage module 21 and serves as a positive electrode plate 41; the second electrode plate is positioned among the 2 first refrigerated storage modules 21 and serves as a negative electrode plate 42; the third electrode plate is positioned at the bottom of the second first refrigerated storage module 21 and is used as a positive electrode plate 41; the first electrode plate and the third electrode plate are both connected with the positive terminal of a high-voltage direct-current generator 32 through high-voltage insulated wires, and the second electrode plate is connected with the negative terminal of the high-voltage direct-current generator 32 through high-voltage insulated wires. Also be equipped with 3 plate electrodes on 2 first freezing storing modules 22, the fourth plate electrode, the fifth plate electrode and the sixth plate electrode are the same with in first cold-stored storing module 21 in the distribution position of 2 first freezing storing modules 22, and the fourth plate electrode and the sixth plate electrode are connected with another high-voltage direct current generator 32's positive terminal through high-voltage insulation wire, and the fifth plate electrode passes through high-voltage insulation wire and is connected with another high-voltage direct current generator 32's negative pole end.

The first refrigerated storage module 21 and the first frozen storage module 22 are plastic drawers 23 which can be pulled in and out and are made of plastic materials with the thickness of 2mm and low dielectric constants. And the rest of the methods such as refrigeration (including cold storage and freezing), wind circulation, heat preservation, heat dissipation, outer frame and the like refer to the manufacturing method of the refrigerator in the prior art.

The high-voltage direct current power supply module 3 comprises 2 high-voltage direct current generators 32 (the output voltage is 0-16000V), 1 digital display high-voltage

pressure measuring instrument

33 and 1 voltage-stabilizing direct current power supply 31 (the input voltage is 220V, the output voltage is 0-12V), the input end of a high-voltage stabilizer is connected with the output end of the high-voltage direct current generator 32, the input ends of the 2 high-voltage direct current generators 32 are connected with the output end of the voltage-stabilizing direct current power supply 31 after being connected in parallel, the grounding end of the high-voltage direct current generator 32 is connected with the ground wire, the high-voltage direct current generator 32 is connected with electrode plates (comprising a positive electrode plate 41 and a negative electrode plate 42) through high-voltage insulated wires. The high-voltage insulated wire adopted in the embodiment is a wire resistant to 40 kV.

The high-voltage direct-current generator 32 is used for outputting 0-20 kV direct-current high voltage after the 0-30V direct-current voltage is subjected to rectification, filtering, multi-resonance transformation and multi-stage voltage doubling rectifying circuit processing; the digital display high-voltage pressure measuring instrument 33 is used for displaying the current high-voltage value; the regulated dc power supply 31 functions to convert 220V ac voltage to 0-12V dc voltage.

As shown in fig. 4, the electrode plate includes a metal electrode 44, an insulating silica gel 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, the other ultra-high dielectric ceramic layer 45 is connected to the bottom of the metal electrode 44, an annular groove is defined by the periphery of the metal electrode 44 and the two ultra-high dielectric ceramic layers 45, the insulating silica gel layer 43 is filled in the annular groove, and the insulating silica gel layer 43 completely covers the periphery of the metal electrode 44. One surface (the opposite surfaces of the two adjacent positive electrode plates 41 and the negative electrode plates) of the high-dielectric ceramic 45 layer far away from the metal electrode 44 is in a shape of a concave surface (the thickness is 10-2mm, and the dielectric constant is 18000) with the periphery gradually thinning towards the center, the electric field intensity in the material in the electric field is better enhanced, and the uniformity of the electric field is better homogenized. The metal electrode 44 is made of silver, and the insulating silicone layer 43 is made of 704 silicone rubber and has a thickness of 2 mm. The length of the electrode plate is 60cm, the width is 24cm, and the thickness is 0.5-1.2 cm. The electrode plates include 3

positive electrode plates

41 and 3 negative electrode plates 42, the center distance between two adjacent electrode plates (positive electrode plate and negative electrode plate) of the first refrigerated storage module 21 is 30cm, and the center distance between two adjacent electrode plates (positive electrode plate and negative electrode plate) of the first frozen storage module 22 is 20 cm.

The insulating silica gel layer 43 serves as an insulating effect for the metal electrode 44; the metal electrode 44 functions to apply a voltage; the ultra-high dielectric ceramic layer 45 functions to increase the electric field strength of the electrode plate. The ultrahigh dielectric ceramic mainly comprises barium lanthanum titanium ceramic, zinc magnesium titanate dielectric ceramic, tantalum oxide-zirconium tin titanate ceramic and the like, and the preparation of the ultrahigh dielectric ceramic can refer to the prior art.

When 26cm high water is put into the first refrigerated storage module 21, the electric field intensity of the first refrigerated storage module 21 is 3.6 multiplied by 10 under the normal working state⁵V/m is increased by more than 15 times than the electric field intensity without the ultrahigh dielectric constant material. When 18cm high water is placed in the first frozen storage module 22, the electric field strength of the first frozen storage module 22 is 6.6 x 10 in the normal operating state⁵V/m is increased by more than 16 times than the electric field intensity of the electric field without the ultrahigh dielectric constant material.

In the fruits and vegetables, the osmanthus flavored litchis which are harvested in sunny days, are eight to nine ripe, and have no mechanical damage and plant diseases and insect pests are selected as raw materials, 50 litchis are placed in a first refrigeration storage module 21 of the refrigerator for fresh-keeping storage, and compared with the auxiliary refrigeration result of a high-voltage electric field without high dielectric material reinforcement, the internal field of materials in the electric field is enhanced by about 10 times, the respiration and physiological metabolism of the litchis are reduced, softening is inhibited, browning and moisture loss are slowed down, and meanwhile, the change trend of the contents of color development, soluble sugar and titratable acid is remarkably reduced or delayed due to the existence of a high-voltage electrostatic field reinforced by the high dielectric material. When the litchi is stored for 24 days, the litchi mass loss rate is 1.62%, the soluble solid mass fraction is 3.32%, the vitamin C content is 0.52mg/g, the total acid mass fraction is 0.072%, and the good fruit rate is 94%, which is far beyond the 5-day storage period of the conventional foam box ice-adding sealed transportation and is prolonged by 4-7 days compared with the second refrigerated storage module.

Example two

In this embodiment, other technical features are the same as those in the first embodiment, except that the following technical features are different:

as shown in fig. 2, in this embodiment, after the power switch is automatically turned off, the lag time is 0.1 second instead of 0.3 second, and the time for the electrode plate to discharge static electricity is 1 second instead of 3 seconds.

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

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

The output voltage of the high voltage direct current generator 32 in this embodiment is 0-13000V instead of 0-16000V.

In this embodiment, 1 second

refrigerated storage module

24 and 1 second frozen storage module 25 replace 1 first

refrigerated storage module

21 and 1 first frozen storage module 22; the second refrigerated storage module 24 and the second frozen storage module 25 have no electrode plates mounted on the top and bottom thereof, and the second refrigerated storage module 24 and the second frozen storage module 25 are plastic drawers in the prior art, and refer to the manufacturing method of the refrigerator in the prior art. The second refrigerated storage module 24 has a height of 17 cm and the second frozen storage module 25 has a height of 13 cm. The intensified high-voltage electrostatic field module 3 comprises 4 electrode plates, wherein 2

positive electrode plates

41 and 2 negative electrode plates 42. The first positive electrode plate 41 is attached to the top of the first refrigerated storage module 21 in a seamless mode, and the first negative electrode plate 42 is attached to the bottom of the first refrigerated storage module 21 in a seamless mode; the first positive electrode plate 41 is connected with the positive terminal of a high voltage DC generator 32, and the first negative electrode plate 42 is connected with the negative terminal of the 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.

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

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

When the first refrigerated storage module 21 is filled with water with the height of 18cm, under the normal working state, the electric field intensity at the center of each layer of the first refrigerated storage module 21 is 3.0 multiplied by 10⁵V/m is increased by more than 12.5 times than the electric field intensity of the electric field without the ultrahigh dielectric constant material. When the first frozen storage module 22 is filled with water with the height of 14 cm, the electric field intensity of the first frozen storage module 22 of each layer is 5.4 multiplied by 10 under the normal working state⁵V/m is increased by more than 13 times than the electric field intensity of an electric field without the ultrahigh dielectric constant material; the freshness keeping performance of the second cold 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.

Fresh and alive prawns are selected as raw materials in shrimp food, 30-35 g of the prawns are stored in a first refrigeration storage module 21 of a refrigerator, compared with the refrigeration result of the refrigerator in the prior art, the internal field of the material in the electric field is enhanced by about 9 times, the total number of colonies in the shrimp meat is inhibited, the change trend of the volatile basic nitrogen value and the K value is slowed down, the juice loss rate of the shrimp meat is kept at a lower level, the PPO enzyme activity is effectively inhibited, thereby inhibiting the browning of the prawns, prolonging the preservation time of the prawns by 4 days compared with the preservation function of the refrigerator in the prior art, namely, 8 days are reached, the total number of colonies in the shrimp meat is 4.0lg (CFU/g) on the 8 th day, the volatile basic nitrogen is 21.2mg/100g and does not exceed the safety limit of the volatile basic nitrogen of the fresh aquatic products by 30mg/100g, the K value is 53 percent, the juice loss rate is 2.1 percent, and the preservation indexes are obviously superior to the preservation effect of the refrigerator in the prior art in all aspects.

EXAMPLE III

as shown in fig. 3, in the present embodiment, the lag time is 0.5 seconds instead of 0.3 seconds after the power switch is automatically turned off.

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

The number of first frozen storage modules 22 in this embodiment is 2 instead of 0.

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

The output voltage of the high voltage dc generator 32 in this embodiment is 18000V instead of 16000V.

The distance between the centers of two adjacent electrode plates (the positively charged electrode plate and the negatively charged electrode plate) of the first refrigerated storage module 21 in this embodiment is 25cm instead of 30 cm.

Selecting the osmanthus-flavored litchis which are harvested in sunny days, are eight to nine ripe and have no mechanical damage and plant diseases and insect pests as raw materials, placing 50 litchis in a first refrigeration storage module 21 of the refrigerator for fresh-keeping storage, and comparing results with results of an electric field without an ultrahigh dielectric constant material, wherein the strength of a material internal field in the electric field reinforced by the high dielectric material is increased by about 10 times, the respiration and physiological metabolism of the litchis are reduced, softening is inhibited, browning and moisture loss are slowed down, and meanwhile, the change trend of contents of color development, soluble sugar and titratable acid is remarkably reduced or delayed due to the existence of a high-voltage electrostatic field reinforced by the high dielectric material. When the litchi chinensis benth is stored for 24 days, the litchi chinensis benth mass loss rate is 1.59%, the soluble solid mass fraction is 3.35%, the vitamin C content is 0.54mg/g, the total acid mass fraction is 0.070%, and the good fruit rate is 95%, and the litchi chinensis benth is prolonged by 4-7 days compared with the auxiliary refrigeration of an electric field without an ultrahigh dielectric constant material.

Example four

the material of the metal electrode 44 in this embodiment is platinum instead of silver.

The distance between the centers of the two adjacent electrode plates (the positively charged electrode plate 41 and the negatively charged electrode plate 42) of the first refrigerated storage module 21 in this embodiment is 35cm instead of 30cm, and the distance between the centers of the two adjacent electrode plates (the positively charged electrode plate 41 and the negatively charged electrode plate 42) of the first frozen storage module 22 is 35cm instead of 20 cm.

The dielectric constant of the ultra-high dielectric ceramic layer 45 in this embodiment is 15000 instead of 18000.

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

In meat, the bacon which is cooled and deacidified for 24 hours is selected, cut into meat blocks of about 5cm multiplied by 4cm and 140g, and placed in a first freezing storage module 22 of the refrigerator for freezing storage, when the central temperature of the meat sample is reduced to-10 ℃, the meat sample is taken out and placed in a first refrigerating storage module 21 for unfreezing, and when the central temperature of the meat sample reaches 1-4 ℃, the meat sample is considered to be completely unfrozen. Compared with the high-voltage electric field auxiliary refrigeration result without high dielectric material reinforcement, the internal field of the material in the electric field is enhanced by about 10 times, the freezing time of the pork is shortened, the supercooling degree is reduced, the size of the ice crystal is reduced, and the color of the pork is well maintained. The loss rate of the meat juice after thawing, the loss rate of cooking and the mass fraction of protein in the thawed juice are also significantly reduced due to the presence of the high dielectric material strengthening high voltage electrostatic field. The freezing time of the pork is 610min, the ice crystal size is reduced to 10.2 mu m, the brightness value, the redness value and the color saturation value of the frozen pork are respectively 34.0, 18.1 and 20.3, the brightness value, the redness value and the color saturation value of the frozen pork are respectively 39.3, 20.6 and 24.0 after unfreezing, the loss rate of unfrozen juice is 3.89%, the mass fraction of protein in the unfrozen juice is 8.91%, the cooking loss is 19.78%, the chewiness is increased by 32.68N, the integrity of pork cells is better maintained, the deterioration of the pork in the freezing and unfreezing processes is relieved, and the quality of the unfrozen pork is improved.

EXAMPLE five

the material of the metal electrode 44 in this embodiment is copper instead of silver.

The output voltage of the high voltage direct current generator 32 in this embodiment is 0-20000V.

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

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

The thickness of the high dielectric ceramic 45 in this embodiment is replaced with 10-2mm by 5-0.5 mm.

EXAMPLE six

the material of the metal electrode 44 in this embodiment is aluminum instead of silver.

The dielectric constant of the ultra-high dielectric ceramic layer 45 in this embodiment is 20000 instead of 18000.

The above-mentioned embodiments are preferred embodiments of the present invention, and the present invention is not limited thereto, and any other modifications or equivalent substitutions that do not depart from the technical spirit of the present invention are included in the scope of the present invention.

Claims

1. The utility model provides an use refrigerator of reinforceing high voltage electrostatic field which characterized in that, includes refrigerator main part, refrigeration module, storing module, high voltage direct current power module and reinforces high voltage electrostatic field module, high voltage direct current power module includes the plate electrode, the refrigeration module install in the upper portion of refrigerator main part, high voltage direct current power module install in refrigerator main part lower part, storing module install in the refrigeration module, the plate electrode install respectively in the top and the bottom of storing module, one the plate electrode with high voltage direct current power module's positive terminal is connected, another the plate electrode with high voltage direct current power module's negative pole end is connected.

2. The refrigerator of claim 1, wherein the electrode plate comprises a metal electrode, an insulating silica gel layer and two ultra-high dielectric ceramic layers, one ultra-high dielectric ceramic layer is connected with the top of the metal electrode, the other ultra-high dielectric ceramic layer is connected with the bottom of the metal electrode, an annular groove is defined by the periphery of the metal electrode and the two ultra-high dielectric ceramic layers, and the insulating silica gel layer is filled in the annular groove.

3. The refrigerator as claimed in claim 2, wherein the ultra-high dielectric ceramic layer has a dielectric constant of 3000-20000.

4. The refrigerator as claimed in claim 2, wherein the ultra-high dielectric ceramic layer has a thickness of 0.5-10 mm.

5. The refrigerator as claimed in claim 1, wherein the opposing surfaces of the two electrode plates are concave surfaces with the peripheries gradually thinning toward the center.

6. The refrigerator of claim 1, wherein the distance between the centers of the electrode plates of two adjacent plates is 5-35 cm.

7. The refrigerator of claim 1, wherein the HVDC power module comprises a regulated DC power supply, a HVDC generator and a digital display high voltage load meter, the HVDC power module comprises a regulated DC power supply and a HVDC generator, the output terminal of the regulated DC power supply is connected to the input terminal of the HVDC generator, the positive terminal of the HVDC generator is connected to one of the electrode plates, the negative terminal of the HVDC generator is connected to the other of the electrode plates, and the digital display high voltage load meter is connected to the signal output terminal of the HVDC generator.

8. The refrigerator applying the intensified electrostatic field according to claim 7, further comprising a switch cooperative module, wherein the switch cooperative module comprises a gate power switch and a linkage electrode electrostatic discharge time-limit switch, the voltage-stabilized dc power supply is connected to the high-voltage dc generator through the gate power switch, the linkage electrode electrostatic discharge time-limit switch is connected to a ground, and the linkage electrode electrostatic discharge time-limit switch is connected to the electrode plate.

9. The refrigerator as claimed in claim 7, wherein the output voltage of the high voltage DC generator is 0-20000V.

10. The refrigerator applying the intensified electrostatic field of claim 1, wherein the storage module is made of plastic with low dielectric constant.