Fresh-keeping device, refrigeration equipment, control method and control device

Abstract

The present invention discloses a fresh-keeping device, a refrigeration device, a control method, a control device and a computer-readable storage medium, which relate to the field of fresh-keeping technology, wherein the fresh-keeping device comprises a fresh-keeping container and an electric field generating device, the fresh-keeping container is provided with a fresh-keeping space, the electric field generating device comprises a high-voltage power supply module and an electrode assembly, the electrode assembly comprises a plurality of plates, at least two of the plurality of plates have the same polarity, all plates of the same polarity are located in the same plane and arranged in a concentric manner, in a first working mode, the high-voltage power supply module drives all plates of the same polarity to work; in a second working mode, the high-voltage power supply module drives some plates of the same polarity to work. The working mode of the fresh-keeping device can be selected according to different load amounts and temperature control programs, thereby matching the working number of plates with actual needs. The plates of the same polarity are arranged in a ring shape and arranged in a concentric manner, which can improve the uniformity of the field strength.

Description

Technical Field

[0001] The present invention relates to the field of fresh-keeping technology, and in particular to a fresh-keeping device, a refrigeration device, a control method, a control device and a computer-readable storage medium. Background Art

[0002] As people's demand for "stockpiling" continues to increase, the requirements for long-term preservation of refrigerators are also getting higher and higher. At present, the underlying mechanism for the preservation of fruits, vegetables, and meat is mainly the precise control of temperature and humidity. In recent years, the application and research of electromagnetic waves such as electric fields and magnetic fields in preservation has been heating up. For example, through the application of electric field energy, a voltage difference is formed on the inside and outside of meat cells, which affects the reaction on the cell membrane, regulates the movement of water molecules, and slows down the freezing and corruption of food. In related technologies, the electric field of the preservation device has high energy consumption when in use and wastes energy when underloaded. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a fresh-keeping device that can adjust the number of connected plates according to actual needs to achieve energy saving and consumption reduction.

[0004] The present invention also provides a refrigeration device having the above-mentioned fresh-keeping device, as well as a control method, a control device and a computer-readable storage medium applied to the above-mentioned refrigeration device.

[0005] According to the first aspect of the present invention, a fresh-keeping device includes a fresh-keeping container and an electric field generating device, wherein the fresh-keeping container is provided with a fresh-keeping space, and the electric field generating device includes a high-voltage power supply module and an electrode assembly, wherein the high-voltage power supply module is used to drive the electric field formed by the electrode assembly in the fresh-keeping space; wherein the electrode assembly includes a plurality of pole plates, at least two of the plurality of pole plates have the same polarity, and all the pole plates of the same polarity are located in the same plane and are arranged in a concentric manner, and the fresh-keeping device has a first working mode and a second working mode, wherein in the first working mode, the high-voltage power supply module drives all the pole plates of the same polarity to generate an electric field; and in the second working mode, the high-voltage power supply module drives some of the pole plates of the same polarity to generate an electric field.

[0006] The fresh-keeping device according to the embodiment of the present invention has at least the following beneficial effects: the working mode of the fresh-keeping device can be selected according to different load amounts and temperature control programs, thereby matching the working number of the plates with actual needs, saving energy and reducing consumption. Moreover, by arranging the plates with the same polarity in a ring shape and arranging them in a concentric manner, the uniformity of the field strength can be improved.

[0007] According to some embodiments of the present invention, all the electrode plates of the electrode assembly have the same polarity.

[0008] According to some embodiments of the present invention, the electrode plate is in the shape of a ring.

[0009] According to some embodiments of the present invention, the electrode assembly is located on the top of the fresh-keeping container.

[0010] The refrigeration equipment according to the second embodiment of the present invention comprises a box body, a refrigeration assembly and a fresh-keeping device according to the first embodiment of the present invention, wherein the box body is provided with a refrigeration compartment; the refrigeration assembly is used to provide cold air for the refrigeration compartment; and the fresh-keeping container is located in the refrigeration compartment.

[0011] The refrigeration device according to the embodiment of the present invention has at least the following beneficial effects: by adopting the fresh-keeping device of the first embodiment of the present invention, when refrigerating, turning on the electric field generating device can regulate the movement of water molecules and slow down the freezing and corruption of food. In addition, the number of connected plates can be adaptively adjusted according to the amount of food and different stages of temperature control to achieve energy saving and consumption reduction.

[0012] According to some embodiments of the present invention, the fresh-keeping container includes a drawer and a cover plate, the cover plate is fixedly mounted on the box body, the drawer is movably disposed in the refrigeration compartment, and the electrode assembly is mounted on the cover plate.

[0013] According to a control method for a refrigeration device of an embodiment of a third aspect of the present invention, the refrigeration device comprises a box, a refrigeration assembly and a fresh-keeping device, the box is provided with a refrigeration chamber, the refrigeration assembly is used to provide cold for the refrigeration chamber, the fresh-keeping device comprises a fresh-keeping container and an electric field generating device, the fresh-keeping container is located in the refrigeration chamber and is provided with a fresh-keeping space, the electric field generating device comprises a high-voltage power supply module and an electrode assembly, the high-voltage power supply module is used to drive the electric field formed by the electrode assembly in the fresh-keeping space; wherein, the electrode assembly comprises a plurality of pole plates, at least two of the plurality of pole plates have the same polarity, and all the pole plates of the same polarity are located in the same plane and are arranged in a concentric manner, the control method comprises: obtaining a first signal, controlling the high-voltage power supply module to drive some of the pole plates of the same polarity to generate an electric field, wherein the first signal is characterized by a temperature drop rate in the fresh-keeping space being less than or equal to a preset rate.

[0014] The control method of the refrigeration equipment according to the embodiment of the present invention has at least the following beneficial effects: when the temperature drop rate in the fresh-keeping space is less than or equal to a preset rate, or when the load amount placed in the fresh-keeping space is less than or equal to a preset value, the high-voltage power supply module only drives part of the plates, and can adaptively adjust the number of connected plates according to the amount of food and the different stages of temperature control, thereby achieving energy saving and consumption reduction.

[0015] According to some embodiments of the present invention, the control method further includes: obtaining a second signal, controlling the high-voltage power supply module to drive all the plates of the same polarity to generate an electric field, wherein the second signal is characterized by a temperature drop rate in the fresh-keeping space being greater than a preset rate.

[0016] According to some embodiments of the present invention, all the plates of the same polarity are divided into a first group and a second group, the first group and the second group each include one or more plates, and controlling the high-voltage power supply module to drive some of the plates of the same polarity to generate an electric field includes:

[0017] Connecting the high-voltage power module to the first group, and disconnecting the high-voltage power module from the second group;

[0018] The high-voltage power module is connected to the second group, and the high-voltage power module is disconnected from the first group.

[0019] According to a control method for a refrigeration device of an embodiment of a fourth aspect of the present invention, the refrigeration device comprises a box, a refrigeration assembly and a fresh-keeping device, the box is provided with a refrigeration chamber, the refrigeration assembly is used to provide cold for the refrigeration chamber, the fresh-keeping device comprises a fresh-keeping container and an electric field generating device, the fresh-keeping container is located in the refrigeration chamber and is provided with a fresh-keeping space, the electric field generating device comprises a high-voltage power supply module and an electrode assembly, the high-voltage power supply module is used to drive the electric field formed by the electrode assembly in the fresh-keeping space; wherein, the electrode assembly comprises a plurality of pole plates, at least two of the plurality of pole plates have the same polarity, and all the pole plates of the same polarity are located in the same plane and are arranged in a concentric manner, the control method comprises: obtaining a third signal, controlling the high-voltage power supply module to drive some of the pole plates of the same polarity to generate an electric field, wherein the third signal is characterized by a load amount placed in the fresh-keeping space being less than or equal to a preset value.

[0020] The control method of the refrigeration equipment according to the embodiment of the present invention has at least the following beneficial effects: when the temperature drop rate in the fresh-keeping space is less than or equal to a preset rate, or when the load amount placed in the fresh-keeping space is less than or equal to a preset value, the high-voltage power supply module only drives part of the plates, and can adaptively adjust the number of connected plates according to the amount of food and the different stages of temperature control, thereby achieving energy saving and consumption reduction.

[0021] According to some embodiments of the present invention, the control method further includes: obtaining a fourth signal, controlling the high-voltage power supply module to drive all the plates of the same polarity to generate an electric field, wherein the fourth signal is characterized by a load amount placed in the fresh-keeping space being greater than a preset value.

[0022] According to the fifth aspect of the present invention, a control device for a refrigeration device comprises: a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, a control method for a refrigeration device according to the third aspect or the fourth aspect of the present invention is implemented.

[0023] A refrigeration device according to a sixth aspect of the present invention comprises a control device for the refrigeration device according to the fourth aspect of the present invention.

[0024] According to the computer-readable storage medium of the seventh aspect embodiment of the present invention, it is characterized in that the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to enable a computer to execute the control method of the refrigeration equipment of the third aspect embodiment or the fourth aspect embodiment of the present invention.

[0025] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0027] Figure 1 An exploded view of a fresh-keeping device according to an embodiment of the present invention;

[0028] Figure 2 for Figure 1 The schematic diagram of the arrangement of the electric field generating device at the cover plate is shown;

[0029] Figure 3 for Figure 2 A schematic diagram of an electric field generating device is shown;

[0030] Figure 4 This is a comparison chart of the average field strength formed by plates of the same area but different shapes at the same voltage;

[0031] Figure 5 A flow chart of a freshness-keeping control method according to an embodiment of the present invention;

[0032] Figure 6 A flowchart of another freshness-keeping control method according to an embodiment of the present invention;

[0033] Figure 7 A flowchart of another freshness-keeping control method according to an embodiment of the present invention;

[0034] Figure 8 The figure is a flow chart of another freshness-keeping control method according to an embodiment of the present invention.

[0035] Reference numerals:

[0036] 100, electric field generating device; 101, fresh-keeping space; 102, high-voltage power supply module; 103, electrode assembly; 104, drawer; 105, cover plate; 106, upper shell; 107, lower shell;

[0037] 301, first electrode plate; 302, second electrode plate. DETAILED DESCRIPTION

[0038] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0039] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0041] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0042] Meat preservation has always been an important topic in food science and food industry. Traditional preservation methods mainly include refrigeration, vacuum packaging, chemical preservatives, etc., but these methods have certain limitations, such as limited preservation time, possible impact on meat quality or the presence of chemical residues. In recent years, electric field preservation technology has gradually attracted attention. Electric fields can delay the spoilage process of meat by affecting the hydrogen bond structure of water molecules, the activity of enzymes and the reproduction of microorganisms. However, the electrode structure and field strength distribution of electric field preservation devices in the prior art are mostly fixed and cannot be dynamically adjusted according to different loads and temperature conditions, resulting in less than ideal preservation effects and high energy consumption.

[0043] The present invention aims to provide a novel fresh-keeping device and control method thereof, which optimizes the spatial distribution of field strength in the drawer by designing a multi-electrode structure and a dynamic electrode connection control strategy, and adjusts the number of electrode connections according to different loads and temperature conditions, thereby achieving the best fresh-keeping effect and reducing energy consumption. Figures 1 to 3 Provide detailed explanation.

[0044] Reference Figure 1 As shown, it can be understood that Figure 1 is an exploded view of a fresh-keeping device in one embodiment of the present invention, referring to Figure 1 The fresh-keeping device includes a fresh-keeping container and an electric field generating device 100. The fresh-keeping container has a certain volume. The fresh-keeping container is provided with a fresh-keeping space 101 for placing food containing water, such as meat food. The electric field generating device 100 is used to generate an electric field inside the fresh-keeping container. It can be understood that the electric field generating device 100 generates an electric field so that the electric field energy forms a voltage difference between the inside and outside of the meat cell, affects the reaction on the cell membrane, regulates the movement of water molecules, and slows down the freezing and corruption of food. The electric field generating device 100 includes a high-voltage power supply module 102 and an electrode assembly 103. The high-voltage power supply module 102 is used to generate an alternating electric field signal. For example, the output voltage of the high-voltage power supply module 102 is 1kV to 2kV, that is, the output voltage of the high-voltage power supply module 102 is high voltage. The high-voltage power supply module 102 drives the electrode assembly 103 to form a periodically oscillating alternating electric field in the fresh-keeping space 101, and uses the periodic change of the electric field to break the hydrogen bond of the ice, generate fine microcrystals, and inhibit the reproduction of bacteria. The electric field generated by the electric field generating device 100 in this embodiment is a high-voltage electric field, which can destroy the hydrogen bonds of the ice layer inside the meat food, thereby preventing the meat food from forming large ice crystals during the cooling process and protecting the meat food cells. The electric field generating device 100 in this embodiment can also inhibit the growth of microorganisms, inactivate enzyme activity, reduce fat oxidation, and retain the nutritional components of the meat food by sterilizing and inactivating enzymes.

[0045] It is understandable that the frequency of the high-voltage power module 102 can be set to 20Hz to 20kHz. For example, the frequency of the high-voltage power module 102 can be 20Hz, 50Hz, 100Hz, 500Hz, 1kHz, 10kHz, 15kHz, 18kHz and 20kHz. The polar molecules (called dipoles) in the food material are moving in a disorderly and irregular manner. For example, water is a polar molecule. When no electric field is applied, the polar molecules point to any direction; when the switch is closed, that is, in the electric field, the polar molecules will be rearranged, with the positive end facing the negative pole and the negative end facing the positive pole. If the direction of the electric field is changed, the orientation of the polar molecules will also change accordingly. If the electric field changes direction rapidly and alternately, the polar molecules will also swing rapidly. Due to the thermal motion of the molecules and the interaction between adjacent molecules, the regular swing of the polar molecules with the change of the electric field direction will be disturbed and hindered, that is, a friction-like effect is generated, so that the molecules gain energy and express it in the form of heat, destroying the hydrogen bonds of ice.

[0046] It is understandable that the effective field strength range of the fresh-keeping space 101 can be set to between 5kV / m and 10kV / m. The electric field generating device 100 generates an oscillating wave of 5kV / m to 10kV / m, which can penetrate the cell membrane of bacteria, destroy the bacterial cells through the electroporation effect, cause the contents to flow out, and cause the bacteria to die, thereby preventing the meat from spoiling. If the effective field strength is less than 5kV / m, it is not easy to destroy the bacterial cells, and the effect of preventing the meat from spoiling is not obvious. If the effective field strength is greater than 10kV / m, the field strength is too high, the cells rupture, the contents flow out, and the divalent iron is continuously oxidized to trivalent iron, resulting in browning.

[0047] It can be understood that the high-voltage electric field is a comprehensive effect field, which has the effects of electromagnetic field radiation and non-uniform electric field, as well as the effect of ion beam. Since water molecules are polar molecules, the forces they are subjected to in the non-uniform electric field are different everywhere, which is equivalent to the effect of variable force, thus destroying the stable and orderly hydrogen bond structure, causing the ice to gradually transition to the state of water. The internal injection effect of the ion beam includes two aspects: energy exchange and charge transfer. In terms of energy exchange, after the energy-carrying ions enter the water-containing material, they interact with the material molecules and water molecules, gradually transferring kinetic energy to the material molecules and water molecules until the kinetic energy of the ions is completely dissipated and stops in the material, that is, the transmission and deposition process of the incident ion energy increases the energy of the original water molecules, causing the hydrogen bonds between the water molecules in the chain molecular clusters to break. In terms of charge transfer, ions and water molecules exchange charges, which increases the electric dipole moment of water molecules in the material, enhances the directional polarization of water molecules, improves the polarity of water, increases the energy storage of the water system and the ability of water to carry ions, and allows low-energy ions to combine with water molecules, even if the number of charges carried by water molecules increases. As a result, the electric field force on water molecules increases under the action of the electric field.

[0048] Reference Figure 1 and Figure 2 As shown, it can be understood that the electrode assembly 103 is a single electrode structure, that is, the electrode assembly 103 includes a plate, and the high-voltage power supply module 102 only drives the electrode assembly 103 of one polarity. The advantages of the single electrode structure are simplicity, ease of manufacture and maintenance, and can be applied to foods of different shapes and sizes.

[0049] Reference Figure 1 As shown, it can be understood that the fresh-keeping container includes a drawer 104 and a cover 105, the cover 105 is located above the drawer 104, and a fresh-keeping space 101 is formed between the drawer 104 and the cover 105. The drawer 104 can slide relative to the cover 105, so as to facilitate the placement or removal of food materials. Figure 2 As shown, the electric field generating device 100 is arranged on the cover plate 105, that is, the electrode assembly 103 is located on the top of the fresh-keeping container. When the fresh-keeping container is placed in the refrigerator, since the storage spaces of the refrigerator are usually arranged in the up and down direction, the electrode assembly 103 is a single electrode structure, and an electric field will be formed on both sides of the plane where the electrode plate is located. The field strength released in the space will gradually weaken as the distance from the electrode plate increases. According to its field strength distribution characteristics and the different field strengths required for various scenarios, by arranging the position of the electrode assembly 103 in the refrigerator, the field strength of the upper and lower storage spaces can be simultaneously adjusted, and then the physiological metabolism of the food in multiple storage spaces can be adjusted to achieve food preservation.

[0050] It is understood that the drawer 104 may be provided with a weight sensor to determine the weight of the food stored in the drawer 104. The weight sensor transmits the detected load signal to the central control unit. The central control unit determines the current load state according to a preset load threshold. A temperature sensor is installed in the drawer 104 to monitor the temperature change in the drawer 104 in real time. The temperature sensor transmits the temperature signal to the central control unit.

[0051] It should be noted that the electric field generating device 100 can also be arranged at other positions, such as at the bottom of the drawer 104, or at the side of the drawer 104. The advantage of the electric field generating device 100 being arranged on the cover plate 105 is that the internal insulation layer of the cover plate 105 can be used to open an installation cavity for accommodating the electric field generating device 100, thereby reducing the overall occupied space of the fresh-keeping device and facilitating the installation and maintenance of the electric field generating device 100.

[0052] It should be noted that the electrode assembly 103 can also be set as a dual-electrode structure, that is, the high-voltage power module 102 drives both positive and negative electrode plates at the same time. The advantage of the dual-electrode structure is that the electric field is evenly distributed. For example, a plate with an opposite polarity to that on the cover 105 is provided at the bottom of the drawer 104, so that a uniformly distributed electric field is formed in the drawer 104.

[0053] Reference Figure 3 As shown, it can be understood that the electrode assembly 103 includes a first electrode plate 301 and a second electrode plate 302, the first electrode plate 301 and the second electrode plate 302 have the same polarity, and the first electrode plate 301 and the second electrode plate 302 are located on the same side of the fresh-keeping container. The first electrode plate 301 and the second electrode plate 302 are annular, and the second electrode plate 302 surrounds the outer periphery of the first electrode plate 301. The first electrode plate 301 and the second electrode plate 302 are arranged in parallel, so that the high-voltage power supply module 102 can only drive the first electrode plate 301 to generate an electric field at the same time, or only drive the second electrode plate 302 to generate an electric field, or drive the first electrode plate 301 and the second electrode plate 302 to generate an electric field at the same time. In other words, the fresh-keeping device has a first working mode and a second working mode. In the first working mode, the high-voltage power supply module 102 drives the first electrode plate 301 and the second electrode plate 302 to work together, so as to form an electric field with a large field strength in the fresh-keeping space 101. When the temperature of the fresh-keeping space 101 drops rapidly, the fresh-keeping device works in the first working mode, which can form a high field strength, regulate the reciprocating motion of the water molecules in the food, prevent the formation of large ice crystals, and protect the meat food cells. In the second working mode, the high-voltage power supply module 102 only drives one of the first electrode plate 301 or the second electrode plate 302 to work, thereby forming an electric field with a smaller field strength in the fresh-keeping space 101. When the fresh-keeping space 101 is in a stable low-temperature section, the fresh-keeping device works in the second working mode to maintain the electric field environment in the fresh-keeping container, which can not only play a fresh-keeping role of blunting enzymes and sterilizing, but also reduce energy consumption. When the user places a small amount of food in the fresh-keeping container, the fresh-keeping device works in the second working mode, so that the field strength is more suitable for the storage of food, achieving the effect of energy saving and consumption reduction.

[0054] It should be noted that the selection between the first working mode and the second working mode can be that after the detection device triggers a signal, the program enters the corresponding working mode according to the trigger signal. It can also be that the user selects the mode to enter the first working mode or the second working mode separately. For example, the preservation device is provided with a strong electric field preservation mode and a weak electric field preservation mode. The strong electric field preservation mode corresponds to the first working mode, and the weak electric field preservation mode corresponds to the second working mode. The user can select the strong electric field preservation mode or the weak electric field preservation mode to control the strength of the electric field.

[0055] It is understandable that within a certain space, the distribution of the spatial electric field strength is related to the size of the plate area. Generally speaking, when the plate is placed on the top, the field strength is strongest directly below the plate, and the field strength becomes weaker as the distance from the center of the plate increases. Therefore, the food at the edge and four corners of the fresh-keeping container is less affected by the electric field, and the effect may be insufficient. In order to avoid this problem, the plate can be enlarged, but this method requires more materials, consumes more energy when used, and wastes energy when underloaded. Therefore, it is necessary to design a technical solution that uses less material and can enhance the field strength at the edge and four corners of the fresh-keeping container.

[0056] In the related art, although the electric field generating device 100 adopts a solution of multiple plates, the multiple plates are arranged in an array, for example, multiple plates are arranged in two rows and three columns. When only some of the plates are turned on, the field strength distribution will be uneven. However, the first plate 301 and the second plate 302 of the embodiment of the present invention are annular, so that the first plate 301 and the second plate 302 can be arranged in a concentric manner. Even if only the first plate 301 or the second plate 302 is turned on, since the first plate 301 and the second plate 302 are annular, the electric field can still be distributed more evenly in the circumferential direction.

[0057] It should be noted that in some other embodiments, the first electrode plate 301 may also be a solid structure, for example, the first electrode plate 301 is circular or rectangular in shape, which can still enable all the electrodes with the same polarity in the embodiment of the present invention to be arranged in a concentric manner.

[0058] It is understandable that the areas of the first plate 301 and the second plate 302 can be the same or different. For example, the area of ​​the first plate 301 is smaller than the area of ​​the second plate 302. When the fresh-keeping device works in the first working mode, the high-voltage power module 102 drives the first plate 301 and the second plate 302 to work, forming the maximum field strength. When the fresh-keeping device works in the second working mode, the first plate 301 does not work, and the high-voltage power module 102 drives the second plate 302 to work, forming a larger field strength, achieving the effect of energy saving and consumption reduction, and can also ensure the uniformity of the field strength distribution in the fresh-keeping space 101 as much as possible. In other words, the first plate 301 is used as an auxiliary plate, and the second plate 302 is used as a main plate. According to different working conditions such as the temperature drop rate of the fresh-keeping space 101 and the load in the fresh-keeping space 101, the first plate 301 is turned on or off.

[0059] Reference Figure 4 As shown, Figure 4This is a comparison chart of the average field strength formed by the plates of the same area but different shapes under the same voltage. It can be seen that when the shapes of the plates are rectangular, rectangular and circular, respectively, under the same area, the field strength formed by the rectangular plate is the smallest, and the field strength formed by the rectangular plate is stronger than that formed by the rectangular plate, but smaller than that formed by the circular plate. For example, when the area of ​​the plate is S / 2, the field strength formed by the rectangular plate is 9137.6V / m, the field strength formed by the rectangular plate is 11174.8V / m, and the field strength formed by the circular plate is 13947.4V / m, and the field strength formed by the circular plate is the largest. Among them, S represents the area of ​​the preset area, S / 2 is half of the area of ​​the preset area, S / 4 is one quarter of the area of ​​the preset area, and so on.

[0060] It should be noted that annular refers to a closed geometric form with central symmetry, and its core feature is the continuous closed area between the inner and outer boundaries, such as an annular area composed of two concentric circles, that is, the remaining part after the small circle concentric with it is dug out from the inside of the large circle. It can also be expanded to a concentric nested structure of other closed curves (such as ellipses and polygons) to form an annular area. For example, a continuous closed area with rectangular inner and outer boundaries also belongs to the annular referred to in this embodiment. That is, the circular ring and rectangular ring mentioned above both belong to the annular referred to in this embodiment. The curvature of the circular ring in all directions is uniform, while the rectangular ring has different side lengths and angles on the plane, and its curvature is different at different positions. This makes them different in geometric properties, physical characteristics and application scenarios.

[0061] Since the circular electrode has a smaller capacitance coefficient under the same area, it can generate a higher field strength. Figure 3 As shown, the embodiment of the present invention sets the shape of the electrode to be a circular ring. When the fresh-keeping device of the embodiment of the present invention is applied to refrigeration equipment such as an air-cooled refrigerator, the fresh-keeping container can adopt the top air outlet method, that is, an air outlet is set at the top of the fresh-keeping container, and the cold air enters the fresh-keeping space 101 through the air outlet. Since the first electrode plate 301 is set to be annular, the hollow position of the annular area can just avoid the incoming cold air, that is, the annular electrode plate can also achieve the effect of not blocking the air supply. Of course, in some other embodiments, the fresh-keeping container can also use the back or side air supply method to adjust the temperature of the fresh-keeping space 101.

[0062] It should be noted that, in some other embodiments, the shapes of the first electrode plate 301 and the second electrode plate 302 may also be set to be rectangular rings, or the shape of the first electrode plate 301 is set to be rectangular rings, and the shape of the second electrode plate 302 is set to be circular rings.

[0063] It should be noted that the electrode assembly 103 may also include a third electrode plate, which is annular and surrounds the outer periphery of the second electrode plate 302. The third electrode plate is arranged in parallel with the first electrode plate 301 and the second electrode plate 302. The high-voltage power supply module 102 may drive one, two or three electrodes to work at the same time. In other words, the electrode assembly 103 may include more than two electrodes.

[0064] It should be noted that in the related art, electric fields are also used to achieve the function of thawing food. However, preservation uses medium and low frequency power supplies, while the thawing electric field sink uses a higher frequency power supply. The main reason is that during the thawing process, the high-frequency electric field quickly changes direction alternately, and the molecules obtain energy and express it in the form of heat, which is manifested as the temperature of the thawed food material rising, thereby thawing. That is, more heat needs to be generated for thawing to raise the temperature inside the food material and dissolve the frozen food material. Preservation is aimed at food materials that have not yet frozen, or it is only necessary to alleviate the freezing rate of food materials, or it is only necessary to maintain the electric field environment in the preservation space 101, so as to play the preservation role of enzyme blunting and sterilization. Less heat needs to be generated, so the power frequency used can be lower. In addition, the effective field strength for thawing is also stronger than the effective field strength for preservation. For example, the effective field strength for thawing is greater than 40kV / m. The oscillation wave greater than 40kV / m affects the movement of water molecules through the energy released by it, promotes ice crystals to pass through the ice crystal belt quickly, and achieves simultaneous thawing of the inside and outside of the food material. If the effective field strength is less than 40kV / m, the energy released by the oscillation wave has a weaker ability to affect the movement of water molecules, ice crystals have difficulty passing through the ice crystal belt, and the inside of the food material is difficult to thaw, and the thawing rate is slow. The effective field strength range of the fresh-keeping space 101 is generally set between 5kV / m and 10kV / m.

[0065] Reference Figure 1 As shown, it can be understood that the fresh-keeping device also includes an upper shell 106 and a lower shell 107. The lower shell 107 is provided with an installation cavity, and the electric field generating device 100 is located in the installation cavity. The upper shell 106 is covered on the lower shell 107, and the lower shell 107 is located above the shell. The upper shell 106 and the lower shell 107 can be detachably connected by means of a snap connection, a screw connection, etc.

[0066] The embodiment of the present invention further provides a refrigeration device, including the fresh-keeping device of the above embodiment. For example, the refrigeration device is provided with a fresh-keeping room, the setting temperature of the fresh-keeping room is -5°C to 0°C, and the fresh-keeping device is located in the fresh-keeping room. The housing structure of the fresh-keeping device is a fresh-keeping drawer 104, and the refrigeration device is provided with a cover plate 105 located above the fresh-keeping drawer 104 (refer to Figure 1 ), the electric field generating device 100 is arranged on the cover plate 105.

[0067] It is understandable that the refrigeration equipment may be a refrigerator, a freezer or the like.

[0068] It should be noted that the fresh-keeping device can also be used as an independent device.

[0069] The embodiment of the present invention provides a control method for a refrigeration device, which is applied to a controller provided in the refrigeration device in the above embodiment, wherein the controller can control the start and stop of the electric field generating device, which will not be described in detail here. Figure 5 As shown, the control method of the embodiment of the present invention includes but is not limited to step S501 and step S502.

[0070] Step S501, obtaining a first signal, controlling the high-voltage power supply module to drive some plates of the same polarity to generate an electric field, wherein the first signal is characterized by a temperature drop rate in the fresh-keeping space being less than or equal to a preset rate.

[0071] It is understandable that after the temperature inside the fresh-keeping space reaches the set value, the temperature can be kept relatively constant through precise temperature control, that is, the temperature drop rate in the fresh-keeping space is small. This stage is the stable low-temperature stage. The purpose of the stable low-temperature stage is to provide a stable low-temperature environment for food to achieve long-term preservation. A stable low-temperature environment can inhibit the growth of microorganisms and the activity of enzymes to the greatest extent, extend the shelf life of food, and reduce the damage to food caused by temperature fluctuations, and prevent food from deteriorating due to repeated freezing and thawing. In this process, the greatest role of the electric field is to blunt enzymes and sterilize, and there is little demand to prevent the formation of large ice crystals. Therefore, the high-voltage power supply module drives some plates to work to meet the working conditions. Compared with the control method of turning on all plates, it can achieve the effect of energy saving and consumption reduction, and can also play a role in blunting enzymes and sterilizing.

[0072] Step S502, obtaining a second signal, controlling the high voltage power supply module to drive all plates of the same polarity to generate an electric field, wherein the second signal is characterized in that the temperature drop rate in the fresh-keeping space is greater than a preset rate.

[0073] It is understandable that when food is placed in the fresh-keeping space from room temperature, its temperature is much higher than the temperature inside the fresh-keeping space. At this time, the food will quickly absorb the cold in the fresh-keeping space, and the temperature drops at a high rate. This stage is the rapid warming stage. The purpose of the rapid warming stage is to quickly reduce the core temperature of the food to the target temperature to shorten the active period of microorganisms and reduce nutrient loss. Of course, there will be a rapid drop in temperature under other working conditions, such as when the refrigeration equipment is restarted after a power outage. In the rapid warming stage, the food is prone to form large ice crystals in the process. Large ice crystals will pierce the cell membrane, causing the cells to rupture, destroying the texture of the meat and affecting the taste. After the cells rupture, the juice and nutrients in the cells will be lost, reducing the nutritional value of the meat. After thawing, the meat tends to become dry, loose, and lose its original flavor and color.

[0074] During the rapid heating stage, ice crystals form at a faster rate, so the electric field strength also needs to be increased. By controlling the high-voltage power module to drive all plates of the same polarity to generate an electric field, a high field strength is formed to regulate the reciprocating motion of water molecules in the food, prevent the formation of large ice crystals, and protect the meat food cells.

[0075] It is understandable that the rapid temperature pulling stage and the stable low temperature stage are two different processes that the temperature control program controls the temperature change in the fresh-keeping space after the food is placed. For example, in the rapid temperature pulling stage, the temperature control program sets the target temperature in the fresh-keeping space to -10°C, and by extending the damper opening time, increasing the fan speed and compressor power, the food is reduced from room temperature (25°C) to -5°C within 30 minutes (the temperature drop rate is about 1°C / minute). When the temperature of the food reaches about -5°C, the temperature control program sets the target temperature in the fresh-keeping space to -4°C, and by reducing the damper opening time, reducing the fan speed and compressor power, the temperature of the food tends to be stable and the temperature fluctuation is reduced (for example, the temperature drop rate is about 0.1°C / minute). The preset rate can be set to 0.3°C / minute. By linking the electric field control program with the temperature control program, the formation of large ice crystals can be accurately prevented, while achieving the effect of energy saving and consumption reduction.

[0076] The embodiment of the present invention provides another control method for refrigeration equipment, which is applied to the controller provided in the refrigeration equipment in the above embodiment, wherein the function of the controller has been described in detail in the above embodiment and will not be repeated here. Figure 6 As shown, the control method of the embodiment of the present invention includes but is not limited to step S601 and step S602.

[0077] Step S601, obtaining a third signal, controlling the high-voltage power module to drive some plates of the same polarity to generate an electric field, wherein the third signal indicates that the load amount placed in the fresh-keeping space is less than or equal to a preset value.

[0078] It is understandable that when the user places food in the fresh-keeping container, the third signal can be triggered by the user inputting weight information, or the load information of the food can be automatically obtained through detection devices such as weight sensors and infrared sensors, and the third signal can be triggered by the load information.

[0079] When a user places a small amount of food in a fresh-keeping container, if the high-voltage power supply module drives all the plates of the same polarity to generate an electric field, the field strength will be too large, or there will be no food under the local position, resulting in energy waste. After obtaining the third signal, the refrigeration device of the embodiment of the present invention controls the high-voltage power supply module to drive some plates to generate an electric field, which can save energy and reduce consumption. For example, the second plate surrounds the periphery of the first plate, and users are generally accustomed to placing food in the center. At this time, only the first plate can be turned on and the second plate can be turned off. The first plate can provide an electric field for at least most of the food and make the field strength meet the requirements.

[0080] In some embodiments, position sensors such as infrared sensors, capacitive sensors, and ultrasonic sensors may also be provided. For example, when the position sensor is an infrared sensor, the position of the food is detected and sensed by receiving and detecting infrared radiation emitted by the object, and the target sensing area where the food is located and the corresponding one or more plates are determined. Each plate corresponds to an independent target sensing area, and the sensing area is the area where the food is located in the fresh-keeping container. That is, the interior of the fresh-keeping space is divided into multiple independent sensing areas, and the size of the sensing area corresponds to the surface area of ​​the plate. After obtaining the third signal, the high-voltage power supply module is controlled to drive the plate corresponding to the target sensing area to start, and the remaining plates are turned off to achieve accurate identification of the position of the food, meet the fresh-keeping requirements while saving energy and reducing consumption.

[0081] Step S602, obtaining a fourth signal, controlling the high voltage power supply module to drive all plates of the same polarity to generate an electric field, wherein the fourth signal indicates that the load amount placed in the fresh-keeping space is greater than a preset value.

[0082] It is understandable that when the load placed in the fresh-keeping space is greater than the preset value, a larger field strength needs to be provided to avoid the formation of large ice crystals in local locations. At this time, a high-voltage power supply module is required to drive all the plates to generate an electric field.

[0083] It should be noted that the load capacity can be reflected by information such as the weight and volume of the food, for example, the weight can be used to represent the load capacity, or the volume can be used to represent the load capacity.

[0084] The embodiment of the present invention provides another control method of refrigeration equipment, such as Figure 7 As shown, Figure 7 yes Figure 5 Step 501 and Figure 6A schematic diagram of an embodiment of the detailed process of step S601 in the embodiment includes but is not limited to steps S701 and S702. Among them, all the plates with the same polarity are arranged in a concentric manner, and all the plates with the same polarity are divided into a first group and a second group, and each plate group includes one or more plates with the same polarity.

[0085] Step S701, connecting the high-voltage power module and the first group, and disconnecting the high-voltage power module and the second group.

[0086] Step S702, connecting the high-voltage power module and the second group, and disconnecting the high-voltage power module and the first group.

[0087] Taking the example that the first group includes the first electrode plate and the second group includes the second electrode plate, at the first moment, the high-voltage power supply module is connected to the first electrode plate and disconnected from the second electrode plate, so that only the first electrode plate is turned on at the first moment, and energy saving and consumption reduction can be achieved in the stable low-temperature stage and when less food is placed in the fresh-keeping space. At the second moment, the high-voltage power supply module is disconnected from the first electrode plate and connected to the second electrode plate, so that only the second electrode plate is turned on at the second moment, and energy saving and consumption reduction can be achieved in the stable low-temperature stage and when less food is placed in the fresh-keeping space. At the first moment and the second moment, the electrode assembly forms a larger field strength in different areas respectively. When step S701 and step S702 are run alternately, the field strength in the fresh-keeping space can be made more uniform, and the effect of energy saving and consumption reduction can be maintained.

[0088] Another embodiment of the present invention also provides a control method for a refrigeration device, such as Figure 8 As shown, Figure 8 This is a complete embodiment of a control method for refrigeration equipment that combines weight and temperature to perform electric field control, which is described below in conjunction with specific steps.

[0089] After the user puts the food into the fresh-keeping container, the load is judged. The user can select the load value by himself, or the load value of the food can be automatically obtained by detection devices such as weight sensors and infrared sensors. When the load value is less than or equal to the preset value, it means that a small amount of food is placed in the fresh-keeping container. Among all the plates with the same polarity, only a part is turned on and the other part is closed, which saves energy and reduces consumption. When the load value is greater than the preset value, it means that a large amount of food is placed in the fresh-keeping container. The current temperature control program is judged. When the fresh-keeping space is in a low-temperature and stable state, it indicates that the current temperature fluctuation is small, that is, the load of the newly placed food is very small, or the temperature of the newly placed food is low, which has little effect on the overall temperature of the fresh-keeping space. Among all the plates with the same polarity, only a part is turned on and the other part is closed to maintain the electric field environment in the fresh-keeping container, which plays a fresh-keeping role of inactivating enzymes and sterilizing. When the fresh-keeping space is not in a low-temperature stable state but in a cooling stage, that is, the load of newly placed food is very large, or the temperature of the newly placed food is high, which has a greater impact on the overall temperature of the fresh-keeping space, the temperature control program enters the cooling step, causing the temperature of the fresh-keeping space to drop rapidly. At this time, all plates of the same polarity are turned on to form a high field strength, which regulates the reciprocating motion of water molecules in the food, prevents the formation of large ice crystals, and protects the meat food cells.

[0090] An embodiment of the present invention further provides a control device for a refrigeration device. The control device is built in the refrigeration device and includes one or more control processors and a memory. For example, one control processor and one memory are used.

[0091] The control processor and the memory may be connected via a bus or other means, with connection via a bus being taken as an example.

[0092] The memory, as a non-transient computer-readable storage medium, can be used to store non-transient software programs and non-transient computer executable programs. In addition, the memory may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some embodiments, the memory may optionally include a memory remotely arranged relative to the control processor, and these remote memories may be connected to the controller via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0093] Those skilled in the art will appreciate that the control device structure exemplified above does not constitute a limitation on the control device, and may include more or fewer components than shown in the figure, or a combination of certain components, or a different arrangement of components.

[0094] The non-transient software program and instructions required to implement the control method applied to the control device in the above embodiment are stored in the memory. When executed by the control processor, the control method applied to the control device in the above embodiment is executed, for example, the control method described above is executed. Figure 5 Steps S501 to S502 of the method, Figure 6 Steps S601 to S602 of the method, Figure 7 Method steps S701 to S702.

[0095] A refrigeration device provided in one embodiment of the present invention includes the control device of the above embodiment.

[0096] Since the refrigeration equipment in this embodiment has the control device in any of the above embodiments, the refrigeration equipment in this embodiment has the hardware structure of the control device in the above embodiments, and can enable the control processor in the control device to call the control program of the refrigeration equipment stored in the memory to realize the control of the control device. The specific implementation method of the refrigeration equipment in this embodiment can refer to the above embodiments, and will not be repeated here to avoid redundancy.

[0097] The device embodiments described above are merely illustrative, and the units described as separate components may or may not be physically separated, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0098] In addition, an embodiment of the present invention further provides a computer-readable storage medium, which stores computer-executable instructions. The computer-executable instructions are executed by one or more control processors, for example, by a control processor, so that the one or more control processors can execute the control method in the above method embodiment, for example, execute the above described Figure 5 Steps S501 to S502 of the method, Figure 6 Steps S601 to S602 of the method, Figure 7 Method steps S701 to S702.

[0099] It will be appreciated by those skilled in the art that all or some of the steps and systems in the methods disclosed above may be implemented as software, firmware, hardware, and appropriate combinations thereof. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium (or non-transitory medium) and a communication medium (or transient medium). As known to those skilled in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and can be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0100] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A fresh-keeping device, characterized in that: include: Fresh-keeping container with fresh-keeping space; An electric field generating device, comprising a high-voltage power supply module and an electrode assembly, wherein the high-voltage power supply module is used to drive the electric field formed by the electrode assembly in the fresh-keeping space; The electrode assembly includes a plurality of electrode plates, at least two of the plurality of electrode plates have the same polarity, and all the electrode plates with the same polarity are arranged in a concentric manner on the same plane. The fresh-keeping device has a first working mode and a second working mode. In the first working mode, the high-voltage power supply module drives all the electrode plates with the same polarity to generate an electric field. In the second working mode, the high-voltage power supply module drives some of the plates with the same polarity to generate an electric field.

2. The fresh-keeping device according to claim 1, characterized in that: All the electrode plates of the electrode assembly have the same polarity.

3. The fresh-keeping device according to claim 2, characterized in that: The electrode plate is in the shape of a circular ring.

4. The fresh-keeping device according to claim 1 or 2, characterized in that: The electrode assembly is located on the top of the fresh-keeping container.

5. Refrigeration equipment, characterized in that include: The box body is provided with a refrigeration compartment; A refrigeration component, used to provide cooling capacity for the refrigeration compartment; The fresh-keeping device according to any one of claims 1 to 4, wherein the fresh-keeping container is located in the refrigeration room.

6. The refrigeration device according to claim 5, characterized in that: The fresh-keeping container comprises a drawer and a cover plate, wherein the cover plate is fixedly mounted on the box body, the drawer is movably arranged in the refrigeration compartment, and the electrode assembly is mounted on the cover plate.

7. A method for controlling a refrigeration device, characterized in that: The refrigeration equipment comprises a box, a refrigeration assembly and a fresh-keeping device, wherein the box is provided with a refrigeration compartment, the refrigeration assembly is used to provide cooling for the refrigeration compartment, the fresh-keeping device comprises a fresh-keeping container and an electric field generating device, the fresh-keeping container is located in the refrigeration compartment and is provided with a fresh-keeping space, the electric field generating device comprises a high-voltage power supply module and an electrode assembly, the high-voltage power supply module is used to drive the electric field formed by the electrode assembly in the fresh-keeping space; wherein the electrode assembly comprises a plurality of pole plates, at least two of the plurality of pole plates have the same polarity, and all the pole plates of the same polarity are located in the same plane and arranged in a concentric manner, and the control method comprises: A first signal is obtained to control the high-voltage power module to drive some of the plates with the same polarity to generate an electric field, wherein the first signal is characterized by a temperature drop rate in the fresh-keeping space being less than or equal to a preset rate.

8. The control method according to claim 7, characterized in that: The control method also includes: A second signal is obtained to control the high-voltage power supply module to drive all the plates of the same polarity to generate an electric field, wherein the second signal is characterized in that the temperature drop rate in the fresh-keeping space is greater than a preset rate.

9. The control method according to claim 7, characterized in that: All the plates with the same polarity are divided into a first group and a second group, the first group and the second group each include one or more plates, and the controlling the high-voltage power supply module to drive some of the plates with the same polarity to generate an electric field includes: Connecting the high-voltage power module to the first group, and disconnecting the high-voltage power module from the second group; The high-voltage power module is connected to the second group, and the high-voltage power module is disconnected from the first group.

10. A method for controlling a refrigeration device, characterized in that: The refrigeration equipment comprises a box, a refrigeration assembly and a fresh-keeping device, wherein the box is provided with a refrigeration compartment, the refrigeration assembly is used to provide cooling for the refrigeration compartment, the fresh-keeping device comprises a fresh-keeping container and an electric field generating device, the fresh-keeping container is located in the refrigeration compartment and is provided with a fresh-keeping space, the electric field generating device comprises a high-voltage power supply module and an electrode assembly, the high-voltage power supply module is used to drive the electric field formed by the electrode assembly in the fresh-keeping space; wherein the electrode assembly comprises a plurality of pole plates, at least two of the plurality of pole plates have the same polarity, and all the pole plates of the same polarity are located in the same plane and arranged in a concentric manner, and the control method comprises: A third signal is obtained to control the high-voltage power module to drive some of the plates with the same polarity to generate an electric field, wherein the third signal is characterized by a load amount placed in the fresh-keeping space being less than or equal to a preset value.

11. The control method according to claim 10, characterized in that: The control method also includes: A fourth signal is obtained to control the high-voltage power supply module to drive all the plates of the same polarity to generate an electric field, wherein the fourth signal is characterized by a load amount placed in the fresh-keeping space being greater than a preset value.

12. Control devices for refrigeration equipment, including: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the control method according to any one of claims 7 to 11 when executing the computer program.

13. Refrigeration equipment, characterized in that Comprising the control device as claimed in claim 12.

14. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to enable a computer to execute the control method according to any one of claims 7 to 11.

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