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

Abstract

The invention discloses a fresh-keeping device, refrigeration equipment and a control method of the refrigeration equipment. The fresh-keeping device comprises a first storage box, an oxygen conveying channel and an ionization module, and the first storage box is provided with a first storage cavity; one end of the oxygen conveying channel communicates with the first storage cavity, the other end of the oxygen conveying channel communicates with an oxygen supply source, and the oxygen conveying channel is used for conveying oxygen to the first storage cavity; the ionization module is used for conducting ionization purification on the first storage cavity. Oxygen is conveyed to the first storage cavity, so that the first storage cavity is in a high-oxygen environment, and high-concentration oxygen can delay color change of meat food; and an ionization module is arranged, and the ionization module discharges to excite active particles, so that sterilization and purification in the first storage cavity are realized, and the decay of the meat food is effectively slowed down. The fresh-keeping device has a high-oxygen function and a sterilization function, so that the meat food is stored in a high-oxygen and sterilization environment, and the fresh-keeping quality of the meat food can be improved.

Description

Technical Field

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

[0002] Food preservation technology is an important technology related to human daily life. In the related technology, the traditional way to preserve meat food is to store it in a low-temperature and low-oxygen environment. However, myoglobin or oxymyoglobin in meat food will generate metmyoglobin in a low-oxygen environment, which will appear brown, causing the meat color to darken and affecting the appearance of the food. The high-oxygen environment will promote the growth and reproduction of microorganisms, which can easily accelerate the corruption of meat food. Therefore, how to improve the preservation quality of meat food has become an urgent problem to be solved. 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 proposes a fresh-keeping device, which provides oxygen to the first storage cavity through an oxygen supply channel and performs ionization purification through an ionization module, so that the meat ingredients are in a high-oxygen and sterilization environment, which can improve the fresh-keeping quality of meat food.

[0004] The invention also provides a refrigeration device.

[0005] The invention also provides a control method for refrigeration equipment.

[0006] The fresh-keeping device according to the first embodiment of the present invention comprises: A first storage box, provided with a first storage cavity; an oxygen supply channel, one end of which is connected to the first storage cavity and the other end of which is connected to an oxygen supply source, the oxygen supply channel being used to supply oxygen to the first storage cavity; and An ionization module is used to ionize and purify the first storage cavity.

[0007] The fresh-keeping device according to the first aspect of the present invention has at least the following beneficial effects: By setting an oxygen supply channel to deliver oxygen to the first storage cavity, the first storage cavity is placed in a high-oxygen environment. High-concentration oxygen can delay the formation of metmyoglobin in meat food and delay discoloration, which is beneficial to maintaining the color of meat ingredients and preserving meat food. By setting an ionization module, the discharge of the ionization module can excite active particles, and the ionized active particles kill the microorganisms in the first storage cavity, achieving sterilization and purification, and effectively slowing down the corruption of meat food. In this way, the preservation device of the present invention, through the above-mentioned settings, has high oxygen function and sterilization function, so that meat food is stored in a high-oxygen and sterilization environment, which can improve the preservation quality of meat food.

[0008] According to some embodiments of the present invention, the ionization module is configured to ionize and purify the first storage cavity when the oxygen is transported in the oxygen delivery channel.

[0009] According to some embodiments of the present invention, the oxygen supply channel includes an outlet communicated with the first storage cavity, and the ionization module is disposed at the outlet.

[0010] According to some embodiments of the present invention, the fresh-keeping device further comprises an oxygen supply tube, the oxygen supply channel is configured inside the oxygen supply tube, the oxygen supply tube comprises a first tube, one end of the first tube is connected to the oxygen supply source, and the other end is connected to the first storage box, the first tube comprises a first tube opening communicating with the first storage cavity, and the first tube opening forms a first cross section; The orthographic projection formed by the ionization module on the first section covers part of the first section, so that part of the oxygen output by the oxygen supply tube enters the first storage cavity, and part of the oxygen enters the first storage cavity after being ionized by the ionization module.

[0011] According to some embodiments of the present invention, the ionization module comprises a housing, and the housing is provided with an air inlet; The oxygen supply pipe also includes a second pipe, at least a part of the second pipe is arranged in the first pipe, the pipe wall of the second pipe is opposite to the pipe wall of the first pipe and a flow gap is formed between them, the flow gap is connected with the first storage cavity, one end of the second pipe is connected with the shell and is connected with the air inlet; during the oxygen supply process, the oxygen located on the outside of the second pipe enters the first storage cavity through the flow gap, and the oxygen entering the second pipe enters the first storage cavity after being ionized by the ionization module.

[0012] According to some embodiments of the present invention, the ionization module includes a power supply, an excitation electrode and a receiving electrode, the excitation electrode and the receiving electrode are arranged at intervals, and the power supply is used to generate a potential difference between the excitation electrode and the receiving electrode to cause the excitation electrode to discharge.

[0013] According to some embodiments of the present invention, the excitation electrode and the receiving electrode are arranged along an output direction of oxygen, and the receiving electrode is located on a side of the excitation electrode away from the oxygen supply source.

[0014] According to some embodiments of the present invention, the excitation electrode comprises a needle electrode, and the needle electrode extends along the output direction of oxygen; The receiving electrode comprises a bottom plate and a convex tube, the convex tube is connected to a side of the bottom plate facing the exciting electrode, the bottom plate is provided with a first air outlet hole connected to the convex tube, the needle electrode is plugged into the convex tube, and is spaced apart from the tube wall of the convex tube; Alternatively, the receiving electrode comprises a bottom plate, at least a portion of the bottom plate protrudes toward a side away from the needle electrode, the bottom plate is provided with a second air outlet, and one end of the needle electrode faces the second air outlet.

[0015] According to some embodiments of the present invention, the receiving electrode is configured to be cylindrical around the exciting electrode, and the exciting electrode is disposed inside the receiving electrode.

[0016] According to some embodiments of the present invention, the excitation electrode includes a connecting rod and a plurality of needle electrodes connected to the connecting rod, each of the needle electrodes extends radially along the connecting rod, the receiving electrode is constructed in a cylindrical shape around the axial direction of the connecting rod, and the receiving electrode is provided with a plurality of third air outlets, and one end of each of the needle electrodes faces one of the third air outlets.

[0017] According to some embodiments of the present invention, the preservation device also includes a humidity sensor, which is used to detect the humidity value in the first storage cavity, and the power supply includes a control circuit, which is configured to adjust the potential difference between the excitation electrode and the receiving electrode according to the humidity value detected by the humidity sensor; wherein, when the humidity sensor detects that the humidity value in the first storage cavity increases, the control circuit adjusts the potential difference between the excitation electrode and the receiving electrode to decrease.

[0018] According to some embodiments of the present invention, the oxygen supply source is an oxygen production module, and the fresh-keeping device includes the oxygen production module; The fresh-keeping device also includes a gas detector, which is used to detect the oxygen concentration value in the first storage cavity. The oxygen production module is configured as follows: when the oxygen concentration value is less than a preset concentration value, the oxygen production module starts oxygen production; when the oxygen concentration value is greater than or equal to the preset concentration value, the oxygen production module stops oxygen production.

[0019] The refrigeration arrangement according to the second aspect of the present invention comprises the fresh-keeping device described in any one of the above embodiments.

[0020] The refrigeration device according to the second aspect of the present invention has at least the following beneficial effects: By adopting the preservation device of the first aspect embodiment, the preservation device transmits oxygen to the first storage cavity by setting an oxygen supply channel, so that the first storage cavity is in a high-oxygen environment. The high-concentration oxygen can delay the formation of metmyoglobin in meat food and delay discoloration, which is beneficial to maintaining the color of meat ingredients and the preservation of meat food; and by setting an ionization module, the discharge of the ionization module can excite active particles, and the ionized active particles kill the microorganisms in the first storage cavity, achieving sterilization and purification, and effectively slowing down the corruption of meat food. In this way, the preservation device of the refrigeration equipment adopts the above-mentioned settings, has high oxygen function and sterilization function, and allows meat food to be stored in a high-oxygen and sterilization environment, which can improve the preservation quality of meat food.

[0021] According to the control method of the refrigeration setting of the third aspect of the embodiment of the present invention, the refrigeration device includes a first storage box, an oxygen production module and an ionization module, the oxygen production module is connected to the first storage box, the oxygen production module is used to provide oxygen for the first storage box, and the ionization module is used to ionize and purify the first storage box; The control method comprises: Controlling the oxygen production module and the ionization module to start; A first signal is obtained to control the oxygen production module and the ionization module to be turned off, wherein the first signal is characterized in that the oxygen concentration value in the first storage box is greater than or equal to a preset concentration value.

[0022] The control method of the refrigeration equipment according to the third aspect of the present invention has at least the following beneficial effects: In the control method of the refrigeration equipment, by starting the oxygen production module and the ionization module, the oxygen production module generates oxygen, so that the first storage box is in a high-oxygen environment, which is beneficial to maintaining the color of meat food and delaying discoloration. The ionization module ionizes active particles, which can kill microorganisms in the first storage box and prevent the meat food from spoiling; and this method controls the ionization module and the oxygen production module to start, so that the ionization module is ionized during the oxygen supply process, so that the ionization module ionizes and sterilizes the first storage box in a high-oxygen environment. The characteristic of the high-oxygen environment to promote ionization can be used to enhance the degree of ionization, effectively increase the concentration of active substances generated by ionization, and improve the sterilization effect.

[0023] According to some embodiments of the present invention, controlling the ionization module to start includes: Controlling the ionization module to execute a first working mode, wherein the voltage in the first working mode is a first voltage; The ionization module is controlled to execute a second working mode, wherein the voltage in the second working mode is a second voltage, and the second voltage is less than the first voltage.

[0024] According to some embodiments of the present invention, controlling the ionization module to execute the second working mode includes: A second signal is obtained to control the ionization module to switch from the first working mode to the second working mode, wherein the second signal is characterized by the working time of the ionization module reaching a first time, or the air humidity value in the first storage box is greater than or equal to a preset humidity value.

[0025] According to some embodiments of the present invention, before controlling the oxygen production module and the ionization module to start, the method further includes: A third signal is obtained, where the third signal indicates that the oxygen concentration value in the first storage box is less than the preset concentration value.

[0026] According to the control method of the refrigeration setting of the fourth aspect of the present invention, the refrigeration device includes a first storage box, an oxygen production module and an ionization module, the oxygen production module is connected to the first storage box, the oxygen production module is used to provide oxygen for the first storage box, and the ionization module is used to ionize and purify the first storage box; The control method comprises: Controlling the oxygen production module and the ionization module to start, and controlling the ionization module to shut down after a first period of time; A first signal is obtained to control the oxygen production module to be turned off, wherein the first signal is characterized in that the oxygen concentration value in the first storage box is greater than or equal to a preset concentration value.

[0027] The control method of the refrigeration equipment according to the fourth aspect of the present invention has at least the following beneficial effects: In the control method of the refrigeration equipment, by starting the oxygen production module and the ionization module, the oxygen production module generates oxygen, so that the first storage box is in a high-oxygen environment, which is beneficial to maintaining the color of meat food and delaying discoloration. The ionization module ionizes active particles, which can kill microorganisms in the first storage box and prevent the meat food from spoiling; and this method controls the ionization module and the oxygen production module to start, so that the ionization module is ionized during the oxygen supply process, so that the ionization module ionizes and sterilizes the first storage box in a high-oxygen environment. The characteristic of the high-oxygen environment to promote ionization can be used to enhance the degree of ionization, effectively increase the concentration of active substances generated by ionization, and improve the sterilization effect.

[0028] 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

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 A schematic diagram of a fresh-keeping device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the assembly of an ionization module and an oxygen delivery tube according to an embodiment of the present invention; Figure 3 is a schematic diagram of ionization of an ionization module according to an embodiment of the present invention; Figure 4 It is a structural schematic diagram of an ionization module according to a first embodiment of the present invention; Figure 5 for Figure 4 A schematic diagram of the excitation electrode and the receiving electrode of the ionization module shown; Figure 6 is a structural schematic diagram of an ionization module according to a second embodiment of the present invention; Figure 7 for Figure 6 A schematic diagram of the excitation electrode and the receiving electrode of the ionization module shown; Figure 8 is a structural schematic diagram of an ionization module according to a third embodiment of the present invention; Fig. 9 for Figure 8 A schematic diagram of the excitation electrode and the receiving electrode of the ionization module shown; Fig.10 A first flow chart of a control method for a refrigeration device according to the present invention; Fig.11 A second flow chart of the control method of the refrigeration equipment of the present invention; Fig.12 A third flow chart of the control method of the refrigeration equipment of the present invention; Fig.13 This is a fourth flow chart of the control method of the refrigeration equipment of the present invention.

[0030] Figure Number: Fresh-keeping device 10; First storage box 100; first storage cavity 110; Oxygen supply source 200; oxygen production module 210; Oxygen delivery tube 300; oxygen delivery channel 300a; outlet 300b; first tube 310; first tube opening 311; second tube 320; flow gap 300c; Ionization module 400; housing 410; air inlet 411; power supply 420; Excitation electrode 430; needle electrode 431; connecting piece 432; connecting rod 433; Receiving electrode 440 ; bottom plate 441 ; first air outlet 4411 ; second air outlet 4412 ; third air outlet 4413 ; convex tube 442 . DETAILED DESCRIPTION

[0031] 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.

[0032] In the description of the present invention, it should be understood that descriptions involving orientation, such as orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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.

[0033] In the description of the present invention, "a plurality" means more than two. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0034] 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.

[0035] In the related art, the traditional way to preserve meat food is to store it in a low-temperature, low-oxygen environment. However, myoglobin or oxymyoglobin in meat food will generate metmyoglobin in a low-oxygen environment, which will turn brown and darken the meat color, affecting the appearance of the food. High-oxygen environment will promote the growth and reproduction of microorganisms, which can easily accelerate the spoilage of meat food.

[0036] In order to improve the fresh-keeping quality of meat food, the present invention provides a fresh-keeping device. The fresh-keeping device provided by the present invention can be applied to refrigeration equipment, and the refrigeration equipment can be a refrigerator, a freezer or other storage equipment with refrigeration function. Please refer to Figure 1 The fresh-keeping device 10 includes a first storage box 100 , an oxygen supply channel 300 a and an ionization module 400 .

[0037] The first storage box 100 is provided with a first storage cavity 110 for storing items to be refrigerated. In one embodiment, the first storage box 100 is used as a meat storage box for storing meat products. When the fresh-keeping device 10 is applied to a refrigeration device, the first storage box 100 is arranged in a storage room of the refrigeration device.

[0038] One end of the oxygen delivery channel 300a is connected to the first storage cavity 110, and the other end is connected to the oxygen supply source 200. The oxygen delivery channel 300a is used to deliver oxygen to the first storage cavity 110. By delivering oxygen to the first storage cavity 110, the oxygen concentration in the first storage cavity 110 can be increased, so that the first storage cavity 110 is in a high oxygen environment. The high concentration of oxygen can delay the formation of metmyoglobin, which is beneficial to maintaining the bright red color of meat products, delaying discoloration, and is beneficial to the preservation of meat products. Among them, the oxygen delivery channel 300a can be formed by a component independent of the first storage box 100, such as an oxygen delivery tube, or it can be formed by the box wall of the first storage box 100 itself.

[0039] It is understandable that the oxygen supply source 200 can be an external oxygen supply device, or an oxygen processing device configured in the fresh-keeping device 10 itself, such as an oxygen generator. When the fresh-keeping device 10 is applied to a refrigeration device, the oxygen supply source 200 can be an oxygen generator configured in the refrigeration device.

[0040] The ionization module 400 is used to ionize and purify the first storage chamber 110. When the ionization module 400 discharges, oxygen can be ionized to generate O - , O + 、O2 + , ground state oxygen atoms O, excited state oxygen atoms O*, O3 and other active substances. These ionized active substances can kill bacteria and other microorganisms, prevent microorganisms from breeding and multiplying on meat food, achieve sterilization and purification of the first storage cavity 110, and effectively slow down the corruption of meat food. Since oxygen molecules have a strong ability to capture electrons, the ionization module 400 can be configured to ionize in a high-oxygen environment, and the characteristics of the high-oxygen environment that promotes ionization can be used to enhance the ionization degree of the ionization module 400, thereby increasing the concentration of ionized active particles and improving the sterilization effect.

[0041] The fresh-keeping device 10 of the embodiment of the present invention is provided with an oxygen supply channel 300a to supply oxygen to the first storage cavity 110, so that the first storage cavity 110 is in a high-oxygen environment. The high-concentration oxygen can delay the formation of metmyoglobin in meat food and delay discoloration, which is beneficial to maintaining the color of meat ingredients and preserving meat food. The ionization module 400 is also provided. The discharge of the ionization module 400 can excite active particles, and the ionized active particles kill the microorganisms in the first storage cavity 110, thereby achieving sterilization and purification, and effectively slowing down the corruption of meat food. In this way, the fresh-keeping device 10 of the present invention, through the above-mentioned settings, has high oxygen function and sterilization function, so that meat food can be stored in a high-oxygen and sterilization environment, which can improve the fresh-keeping quality of meat food.

[0042] In some embodiments, the ionization module 400 is configured to ionize and purify the first storage cavity 110 when the oxygen delivery channel 300a delivers oxygen, that is, the ionization module 400 performs ionization during the oxygen delivery process. In this way, the oxygen concentration in the first storage cavity 110 is increased during the oxygen delivery process of the oxygen delivery channel 300a, so that the first storage cavity 110 is in a high oxygen environment. By ionizing the ionization module 400 in a high oxygen environment and utilizing the characteristics of the high oxygen environment promoting ionization, the ionization degree of the ionization module 400 is enhanced, the concentration of the ionized active substances can be increased, and the sterilization effect can be effectively improved.

[0043] In some embodiments, the oxygen delivery channel 300a includes an outlet 300b that communicates with the first storage chamber 110. Figure 1 As shown, the ionization module 400 is disposed at the outlet 300b.

[0044] By setting the ionization module 400 at the outlet 300b of the oxygen supply channel 300a, on the one hand, when the oxygen transported by the oxygen supply channel 300a flows into the first storage chamber 110 from the outlet 300b, the oxygen will first pass through the ionization module 400, so that enough oxygen can participate in the ionization, further improving the degree of ionization; on the other hand, the ionized active substances are more likely to diffuse from the outlet 300b to the surroundings of the first storage chamber 110, so that the active substances can move to various positions of the first storage chamber 110 as much as possible and reach the surface of each food for sterilization; moreover, the ionized active substances have a survival period, and the ionization module 400 is set at the outlet 300b, so that the distance between the ionization module 400 and the bearing surface of the first storage chamber 110 is appropriate (relative to being set in the oxygen supply channel 300a or the entrance of the oxygen supply channel 300a), so that the distance is not too far to cause the active substances to be inactivated and fail to achieve a sterilization effect.

[0045] It should be understood that the ionization module 400 may be completely located in the first storage cavity 110 or partially located in the first storage cavity 110, as long as the ionization module 400 is located at the outlet 300b of the oxygen supply channel 300a.

[0046] In some embodiments, the fresh-keeping device 10 includes an oxygen supply tube, and the oxygen supply channel 300a is constructed by the oxygen supply tube. Figure 2In one embodiment, the oxygen delivery tube 300 includes a first tube 310, one end of the first tube 310 is connected to the oxygen supply source 200, and the other end is connected to the first storage box 100. The end of the first tube 310 connected to the first storage box 100 is provided with a first pipe opening 311 connected to the first storage cavity 110, and the first pipe opening 311 surrounds a first cross section (not shown). The orthographic projection of the ionization module 400 on the first cross section covers part of the first cross section, so that part of the oxygen output by the oxygen delivery tube 300 directly enters the first storage cavity 110, and part of the oxygen enters the first storage cavity 110 after being ionized by the ionization module 400.

[0047] That is to say, when the oxygen transported by the oxygen supply tube 300 flows out from the first pipe port 311, part of the oxygen enters the ionization module 400 to participate in ionization, and stimulates active particles to enter the first storage cavity 110, and part of the oxygen directly enters the first storage cavity 110 without being ionized. In this way, high-concentration oxygen and active particles exist in the first storage cavity 110 at the same time. The high-concentration oxygen can maintain the color of meat ingredients, and the active particles can sterilize meat ingredients, thereby ensuring the storage quality of meat food.

[0048] In one embodiment, please continue to refer to Figure 2 The ionization module 400 includes a housing 410, and the housing 410 is provided with an air inlet 411. The oxygen delivery tube 300 includes a second tube 320, at least a portion of which is disposed in the first tube 310, the tube wall of the second tube 320 is disposed opposite to the tube wall of the first tube 310, and a flow gap 300c is formed between the two, and the flow gap 300c is communicated with the first storage cavity 110. One end of the second tube 320 is connected to the housing 410 of the ionization module 400, and the second tube 320 is communicated with the air inlet 411.

[0049] Specifically, during the oxygen delivery process, when the oxygen input into the first tube 310 by the oxygen supply source 200 flows to the second tube 320, a portion of the oxygen enters the flow gap 300c between the second tube 320 and the first tube 310 (i.e., located on the outside of the second tube 320), and a portion of the oxygen enters the second tube 320. The oxygen located on the outside of the second tube 320 directly enters the first storage cavity 110 through the above-mentioned flow gap 300c, and the oxygen entering the second tube 320 enters the outer shell 410 of the ionization module 400 from the air inlet 411, and the active particles are ionized by the ionization module 400 and enter the first storage cavity 110.

[0050] In this way, through the above-mentioned arrangement, this embodiment makes the oxygen supply pipe 300 a double-layer design of inner and outer pipes. The second pipe 320 divides the oxygen supply channel 300a into two flow paths, so that the oxygen in the first pipe 310 is diverted before flowing out from the outlet 300b of the oxygen supply channel 300a, and the second pipe 320 is connected to the air inlet 411 of the ionization module 400. The second pipe 320 can guide enough oxygen into the ionization module 400, so that enough oxygen can be ionized, which further improves the degree of ionization, can greatly increase the concentration of ionized active particles, and greatly improve the sterilization and purification effect.

[0051] It is understandable that a connection structure may be provided between the second tube 320 and the first tube 310, for example, a connection arm (not shown in the figure) may be provided between the tube wall of the second tube 320 and the tube wall of the first tube 310, so that the second tube 320 is fixed to the first tube 310. In one embodiment, the second tube 320 and the first tube 310 are integrally formed.

[0052] In one embodiment, the gap distance between any part of the tube wall of the second tube 320 and the tube wall of the first tube 310 is equal. For example, when the second tube 320 and the first tube 310 are both configured as round tubes, the second tube 320 and the first tube 310 can be coaxially configured.

[0053] Please refer to Figure 3 The ionization module 400 includes a power supply 420, an excitation electrode 430 and a receiving electrode 440. The excitation electrode 430 and the receiving electrode 440 are arranged at intervals, and the power supply 420 is used to generate a potential difference between the excitation electrode 430 and the receiving electrode 440 to discharge the excitation electrode 430. The excitation electrode 430 is a high voltage electrode, and the receiving electrode 440 is a ground electrode.

[0054] Specifically, the power supply 420 applies high voltage between the excitation electrode 430 and the receiving electrode 440 to discharge the excitation electrode 430, thereby ionizing oxygen to generate O - , O + 、O2 +, ground state oxygen atoms O, excited state oxygen atoms O*, O3 and other active particles, these particles have a bactericidal effect, because part of the oxygen transported by the oxygen delivery tube 300 enters the ionization module 400, the oxygen concentration at the excitation electrode 430 is high, and the excitation electrode 430 ionizes the high concentration oxygen, which can produce high concentration of active particles, and has a good bactericidal effect. Moreover, the ionized charged particles are accelerated to move toward the receiving electrode 440 under the action of the electric field. During the movement, the charged particles will collide with neutral particles such as air molecules between the two electrodes, so that they move toward the receiving electrode 440 together, thereby generating ion wind blowing toward the receiving electrode 440, realizing the acceleration of the airflow without wind blades, so that the above-mentioned active particles have greater kinetic energy, which can quickly diffuse to the food in the first storage cavity 110, and realize rapid sterilization and purification; at the same time, the active particles can move to various positions of the first storage cavity 110 under kinetic energy, and can purify food at any position, realizing full-range sterilization and purification. Moreover, the kinetic energy of the ionized wind can also drive the unionized oxygen to accelerate its movement, so that the high-concentration oxygen can quickly contact the food at various locations in the first storage cavity 110, thereby improving the preservation effect.

[0055] Since the ionization module 400 generates ion wind blowing toward the receiving electrode 440 during ionization, in order to enable the ionized active particles to better move to the food in the first storage cavity 110, in some embodiments, the excitation electrode 430 and the receiving electrode 440 are arranged along the output direction of oxygen, and the receiving electrode 440 is located on the side of the excitation electrode 430 away from the oxygen supply source 200.

[0056] Please refer to Figures 4 to 7 The excitation electrode 430 includes a needle electrode 431 and a connecting piece 432 connected to the needle electrode 431. The connecting piece 432 is connected to the power supply 420. The needle electrode 431 extends along the output direction of oxygen. When the power supply 420 outputs a high voltage, the tip of the needle electrode 431 discharges, ionizing the surrounding air to generate active particles. The number of needle electrodes 431 can be set to one or more.

[0057] In one embodiment, reference Figure 4 and Figure 5As shown, the receiving electrode 440 includes a bottom plate 441 and a convex tube 442, the convex tube 442 is connected to the side of the bottom plate 441 facing the exciting electrode 430, the bottom plate 441 is provided with a first air outlet 4411 connected to the convex tube 442, and the needle electrode 431 is plugged into the convex tube 442 and spaced from the tube wall of the convex tube 442. The oxygen entering the ionization module 400 needs to flow out from the first air outlet 4411 through the convex tube 442. The convex tube 442 cooperates with the bottom plate 441 to gather oxygen, so that the oxygen entering the ionization module 400 can be fully ionized, effectively reducing the unionized oxygen flowing out of the first air outlet 4411, and improving the ionization degree of oxygen. It can be understood that when the number of needle electrodes 431 is set to multiple, the number of convex tubes 442 is also set to multiple, and the multiple convex tubes 442 correspond to the multiple needle electrodes 431 one by one.

[0058] In another embodiment, reference Figure 6 and Figure 7 As shown, the receiving electrode 440 includes a bottom plate 441, at least a portion of the bottom plate 441 protrudes toward a side away from the needle electrode 431, the bottom plate 441 is provided with a second air outlet 4412, and one end of the needle electrode 431 faces the second air outlet 4412. Similarly, by protruding at least a portion of the bottom plate 441 toward a side away from the needle electrode 431, a certain space can be reserved to block and temporarily store oxygen that is not ionized in time, so that the oxygen entering the ionization module 400 can be fully ionized, reducing the unionized oxygen from the second air outlet 4412, and improving the ionization degree of oxygen. Among them, the bottom plate 441 can form an arc protrusion toward the side away from the needle electrode 431.

[0059] In other embodiments, to further improve the degree of ionization, the receiving electrode 440 can be constructed in a cylindrical shape around the exciting electrode 430, and the exciting electrode 430 is disposed inside the receiving electrode 440. Figure 8 and Fig. 9 In one embodiment, the excitation electrode 430 includes a connecting rod 433 and a plurality of needle electrodes 431 connected to the connecting rod 433, each needle electrode 431 extends radially along the connecting rod 433, and the receiving electrode 440 is cylindrically constructed around the axial direction of the connecting rod 433. The receiving electrode 440 is provided with a plurality of third air outlet holes 4413, and one end of each needle electrode 431 faces one third air outlet hole 4413.

[0060] In this way, by surrounding the exciting electrode 430 with the receiving electrode 440 to form a cylindrical shape, the exciting electrode 430 is arranged in the cylindrical body formed by the receiving electrode 440, and a plurality of needle electrodes 431 can be arranged on the connecting rod 433 along its radial and circumferential directions, thereby greatly increasing the number of needle electrodes 431, and needle electrodes 431 are arranged in all directions, so that when oxygen flows through the ionization module 400, it can successively contact different needle electrodes 431 for ionization, effectively preventing the oxygen from flowing out without being ionized, thereby greatly improving the degree of oxygen ionization.

[0061] In some embodiments, the fresh-keeping device 10 further includes a humidity sensor, which is used to detect the humidity value in the first storage cavity 110. The power supply 420 includes a control circuit, which is configured to adjust the potential difference between the excitation electrode 430 and the receiving electrode 440 according to the humidity value detected by the humidity sensor. When the humidity sensor detects that the humidity value in the first storage cavity 110 increases, the control circuit adjusts the potential difference between the excitation electrode 430 and the receiving electrode 440 to decrease.

[0062] It should be noted that the greater the air humidity, the more conducive it is to ionization. Therefore, when the humidity in the first storage cavity 110 increases, the voltage is reduced. Based on the positive effect of high humidity on promoting ionization, the voltage can be reduced to achieve an ionization degree that is not much different from that before the voltage reduction. In this embodiment, the humidity value in the first storage cavity 110 is detected by a humidity sensor, so that the control circuit adjusts the voltage between the excitation electrode 430 and the receiving electrode 440 according to the detected humidity value. When the humidity is high, the voltage is reduced, which can reduce the power consumption of the power supply 420.

[0063] In some embodiments, the oxygen supply source 200 is an oxygen production module 210, and the oxygen production module 210 can be an electrochemical oxygen production module, such as a single-electrode electrochemical oxygen production module, or an array electrode electrochemical oxygen production module. It should be noted that the electrochemical oxygen production module is an existing mature technology and will not be described in detail here.

[0064] In one embodiment, the fresh-keeping device 10 may further include a second storage box, and the second storage box is used to store fruits and vegetables. The oxygen production module 210 may be connected to the second storage box through a pipeline, and the oxygen production module 210 may react the oxygen in the second storage box to form a low oxygen environment in the second storage box. The low oxygen environment can inhibit respiration, inhibit ethylene production, and effectively inhibit the growth and reproduction of aerobic bacteria, which is conducive to the preservation of fruits and vegetables.

[0065] In some embodiments, the fresh-keeping device 10 further includes a gas detector, which is used to detect the oxygen concentration value in the first storage cavity 110. The oxygen production module 210 is configured as follows: when the oxygen concentration value is less than a preset concentration value, the oxygen production module 210 starts oxygen production; when the oxygen concentration value is greater than or equal to the preset concentration value, the oxygen production module 210 stops oxygen production. The gas detector may be an oxygen sensor. The preset concentration value may be an exact value or a range of values.

[0066] Through the above settings, the oxygen production module 210 is linked with the gas detector, which facilitates the on-off control of the oxygen production module 210, so that the oxygen production module 210 can adjust the amount of oxygen delivered to the first storage cavity 110 according to actual needs, so as to better preserve the meat food. Specifically, when the gas detector detects that the oxygen concentration is low, the oxygen production module 210 starts to produce oxygen to ensure that there is a high oxygen concentration in the first storage cavity 110, which is conducive to the preservation of meat food; when the oxygen concentration reaches the preset concentration value and is sufficient to meet the preservation and sterilization requirements of meat food, the oxygen production module 210 stops producing oxygen to avoid excessive oxygen generation and waste of resources, while reducing the power consumption of the oxygen production module 210.

[0067] Specifically, the fresh-keeping device 10 further includes a control panel, and the gas detector and the oxygen production module 210 are electrically connected to the control panel respectively. When the gas detector detects that the oxygen concentration value in the first storage cavity 110 is less than the preset concentration value, a first detection signal is sent to the control panel, triggering the control panel to output a first control instruction, and controlling the oxygen production module 210 to start oxygen production. When the gas detector detects that the oxygen concentration value in the first storage cavity 110 is greater than or equal to the preset concentration value, a second detection signal is sent to the control panel, triggering the control panel to output a second control instruction, and controlling the oxygen production module 210 to shut down oxygen production.

[0068] The present invention further provides a refrigeration device, which includes a fresh-keeping device 10 conceived based on any of the above embodiments. The refrigeration device may be a refrigerator or a freezer.

[0069] Since the refrigeration device adopts all the technical solutions of the fresh-keeping device 10 of the above embodiment, it has at least all the beneficial effects brought by the technical solutions of the above embodiment.

[0070] The present invention also provides a control method for a refrigeration device of a first embodiment. The control method for a refrigeration device is applied to the refrigeration device conceived in the above embodiment, the refrigeration device includes a box body, a box door connected to the box body, and also includes the first storage box 100, the oxygen delivery channel 300a, the ionization module 400 and the oxygen production module 210 of the above embodiment, these components are arranged in the box body, the structure and function of these components are referred to the above embodiment, and will not be described in detail here.

[0071] Please refer to Fig.10 , the control method of the refrigeration equipment includes: Step 102: Control the oxygen production module 210 and the ionization module 400 to start.

[0072] By starting the oxygen production module 210 and the ionization module 400, the oxygen production module 210 generates oxygen and transports the oxygen to the first storage box 100 through the oxygen supply channel 300a, providing a high-oxygen environment for the first storage cavity 110. The high-concentration oxygen can delay the formation of metmyoglobin, which is beneficial to maintaining the color of meat products and delaying discoloration. The ionization module 400 generates active particles during the discharge process, which can sterilize and purify the first storage cavity 110, prevent the growth and reproduction of microorganisms on meat products, and prevent the meat products from spoiling.

[0073] Step 104: Obtain a first signal to control the oxygen production module 210 and the ionization module 400 to be turned off. The first signal is characterized by the oxygen concentration value in the first storage box 100 being greater than or equal to a preset concentration value.

[0074] That is, when it is determined that the oxygen concentration in the first storage box 100 reaches the preset concentration value, the oxygen production module 210 and the ionization module 400 are turned off. Specifically, the refrigeration device may include a gas detector such as an oxygen sensor, which is used to detect the oxygen concentration value in the first storage box 100.

[0075] In the control method of the above-mentioned refrigeration equipment, by starting the oxygen production module 210 and the ionization module 400, the oxygen production module 210 generates oxygen, so that the first storage cavity 110 is in a high-oxygen environment, which is beneficial to maintaining the color of meat food and delaying discoloration. The ionization module 400 ionizes active particles, which can kill bacteria in the first storage box 100 and prevent the meat food from spoiling; and this method controls the ionization module 400 and the oxygen production module 210 to start, so that the ionization module 400 is ionized during the oxygen supply process, so that the ionization module 400 ionizes and sterilizes the first storage cavity 110 in a high-oxygen environment. The characteristic of the high-oxygen environment to promote ionization can be used to enhance the degree of ionization, effectively increase the concentration of active substances produced by ionization, and improve the sterilization effect.

[0076] In some embodiments, the oxygen production module 210 and the ionization module 400 can be started under the triggering of a fourth signal, and the fourth signal can be a start signal triggered by a control device such as a control switch, or a closing signal of a door. For example, the refrigeration device can include a control switch connected to the oxygen production module 210 and the ionization module 400. When the user needs to actively start oxygen production and ionization, the fourth signal can be triggered by pressing a start button of the control switch.

[0077] In some embodiments, the fourth signal is characterized as a closing signal of the door, that is, it is determined that the door is closed. It is understandable that the fourth signal is triggered after the door is closed. The refrigeration equipment can detect the open and closed state of the door through a door switch detection element such as a micro switch or a light sensor. When the door switch detection element detects that the door is closed, the fourth signal is triggered. The oxygen production module 210 and the ionization module 400 are started after the door is closed. Correspondingly, the oxygen production module 210 and the ionization module 400 are not started when the door is not closed (in an open state), so as to avoid the user opening the first storage box 100 when the door is in an open state, causing the oxygen provided by the oxygen production module 210 to the first storage box 100 to escape to the outside of the refrigerator and cause waste, and at the same time avoid the charged particles generated by ionization from escaping and causing harm to the user.

[0078] Please refer to Fig.11 In one embodiment, in the above step 102, controlling the ionization module 400 to start may specifically include the following steps: Step 1021: Control the ionization module 400 to execute a first working mode, where the voltage in the first working mode is a first voltage.

[0079] Step 1022: Control the ionization module 400 to execute the second working mode, the voltage in the second working mode is a second voltage, and the second voltage is lower than the first voltage.

[0080] Among them, when the ionization module 400 executes the second working mode, the ionization module 400 can be continuous operation, or the ionization module 400 can also be intermittent operation. It should be noted that the continuous operation here is relative to the intermittent operation, which means that the ionization module 400 is in a non-stop working state, and does not mean that the ionization module 400 is not closed. When the oxygen concentration value in the first storage box 100 that meets the above step 104 reaches a preset concentration value, the ionization module 400 is closed together with the oxygen production module 210. In one embodiment, the ionization module 400 is configured to: open the ionization module 400 once every second time interval, and the ionization module 400 works for a third time each time it is opened.

[0081] It can be understood that the ionization degree of the ionization module 400 is positively correlated with the voltage. The greater the voltage, the greater the ionization degree of the ionization module 400. The voltage of the ionization module 400 in the first working mode is the first voltage, and the voltage in the second working mode is the second voltage. If the second voltage is less than the first voltage, the ionization degree of the ionization module 400 in the first working mode is greater than the ionization degree of the ionization module 400 in the second working mode. In this way, after the ionization module 400 is started, by controlling the ionization module 400 to execute the first working mode first, the ionization module 400 first ionizes and sterilizes the first storage cavity 110 in a state of strong ionization, and a large number of active particles can be quickly generated in a short time, so that high-concentration active particles can quickly reach the food, and achieve rapid sterilization; since most of the bacteria in the first storage cavity 110 have been killed before, the ionization of weak ionization can meet the subsequent sterilization requirements, so the ionization module 400 executes the first working mode and then controls it to execute the second working mode, which reduces the working voltage and weakens the ionization degree, and can reduce power consumption.

[0082] In the above step 1022, controlling the ionization module 400 to execute the second working mode includes: obtaining a second signal, controlling the ionization module 400 to switch from the first working mode to the second working mode, and the second signal is characterized by the working time of the ionization module 400 reaching the first time, or the air humidity value in the first storage box 100 is greater than or equal to the preset humidity value.

[0083] That is, in one embodiment, within the first time period after the ionization module 400 is started, the ionization module 400 first executes the first working mode, and after the first time period, the ionization module 400 switches to the second working mode. It can be understood that the specific value of the first time period can be set according to the volume size of the first storage box 100, and the first time periods corresponding to the first storage boxes 100 of different volumes are different. For the first storage box 100 with a larger volume, in order to ensure a good sterilization and purification effect, the first time period can be set longer, and for the first storage box 100 with a smaller volume, the first time period can be set relatively short.

[0084] In another embodiment, the triggering condition for the ionization module 400 to switch from the first working mode to the second working mode may be: the air humidity value in the first storage box 100 is greater than or equal to the preset humidity value. Among them, the refrigeration device may include a humidity sensor, and the air humidity value in the first storage box 100 may be detected by the humidity sensor. It should be noted that the greater the air humidity, the more conducive to ionization. When the humidity in the first storage box 100 increases, based on the positive effect of high humidity on promoting ionization, reducing the voltage can also achieve an ionization degree that is not much different from that before the voltage is reduced. In this embodiment, by using humidity as a condition for the ionization module 400 to switch the working mode, when the air humidity value in the first storage box 100 is greater than or equal to the preset humidity value, the ionization module 400 is controlled to switch from the first working mode to the second working mode, and the voltage of the ionization module 400 is reduced by the effect of high humidity promoting ionization, thereby reducing power consumption.

[0085] Please refer to Fig.12 The present invention also provides a control method for a refrigeration device according to a second embodiment. The control method according to this embodiment includes the following steps 202, 203 and 204, wherein steps 202 and 204 are the same as steps 102 and 104 of the control method according to the first embodiment, with the main difference being that the control method according to this embodiment further includes step 203 before step 204, which is described in detail below: Step 202: Control the oxygen production module 210 and the ionization module 400 to start. Please refer to step 102 for details.

[0086] Step 203: Obtain a third signal, where the third signal indicates that the oxygen concentration value in the first storage box 100 is less than a preset concentration value.

[0087] That is, before starting the oxygen production module 210 and the ionization module 400, it is necessary to determine that the oxygen concentration value in the first storage box 100 is lower than the preset concentration value. In this way, when the user opens the door to take out food and then closes the door again after the previous oxygen production reaches the preset oxygen concentration value, the refrigeration device will not immediately start the oxygen production module 210 due to the closure of the door, but first detect the oxygen concentration in the first storage cavity 110, and start oxygen production only when it is determined that the oxygen concentration in the first storage cavity 110 is low, so as to avoid the first storage cavity 110 itself being in a high oxygen environment and still continuing to produce oxygen, which can further reduce power consumption.

[0088] Step 204: Obtain a first signal to control the oxygen production module 210 and the ionization module 400 to be turned off. The first signal indicates that the oxygen concentration value in the first storage box 100 is greater than or equal to a preset concentration value. Please refer to step 104 for details.

[0089] Please refer to Fig.13The present invention also provides a control method for a refrigeration device of a third embodiment. The control method for a refrigeration device is applied to the refrigeration device conceived in the above embodiment, and the refrigeration device includes a box body, a box door connected to the box body, and also includes the first storage box 100, the oxygen delivery channel 300a, the ionization module 400 and the oxygen production module 210 of the above embodiment, which are arranged in the box body. Please refer to the above embodiment for the structure and function of these components, which will not be described in detail here.

[0090] The control method of the refrigeration equipment in this embodiment includes: 302: Control the oxygen production module 210 and the ionization module 400 to start, and control the ionization module 400 to shut down after a first period of time.

[0091] By starting the oxygen production module 210 and the ionization module 400, the oxygen production module 210 generates oxygen and can transport the oxygen to the first storage box 100 through the oxygen supply channel 300a, providing a high-oxygen environment for the first storage cavity 110. The high-concentration oxygen can delay the formation of metmyoglobin, which is beneficial to maintaining the color of meat products and delaying discoloration. The ionization module 400 discharges to generate active particles, which can sterilize and purify the first storage cavity 110, prevent microorganisms from growing and multiplying on meat products, and prevent meat products from spoiling.

[0092] After the first time period, the ionization module 400 is controlled to be turned off, that is, after the ionization module 400 is started and reaches the first time period, the ionization module 400 is turned off. It can be understood that the specific value of the first time period can be set according to the volume size of the first storage box 100, and the first time periods corresponding to the first storage boxes 100 of different volumes are different. For the first storage box 100 with a larger volume, in order to ensure a good sterilization and purification effect, the first time period can be set longer, and for the first storage box 100 with a smaller volume, the first time period can be set relatively short.

[0093] The oxygen production module 210 and the ionization module 400 can be started under the triggering of the fourth signal, and the fourth signal can be a start signal triggered by a control device such as a control switch, or a closing signal of a door. For example, the refrigeration device can include a control switch connected to the oxygen production module 210 and the ionization module 400. When the user needs to actively start oxygen production and ionization, the fourth signal can be triggered by pressing the start button of the control switch.

[0094] In some embodiments, the fourth signal is characterized as a closing signal of the door, that is, it is determined that the door is closed. It is understandable that the fourth signal is triggered after the door is closed. The refrigeration equipment can detect the open and closed state of the door through a door switch detection element such as a micro switch or a light sensor. When the door switch detection element detects that the door is closed, the fourth signal is triggered. When it is determined that the door is closed, the oxygen production module 210 and the ionization module 400 are started. Correspondingly, the oxygen production module 210 and the ionization module 400 are not started when the door is not closed (in an open state), so as to avoid the user opening the first storage box 100 when the door is in an open state, causing the oxygen provided by the oxygen production module 210 to the first storage box 100 to escape to the outside of the refrigerator and cause waste, and at the same time avoid the charged particles generated by ionization from escaping and causing harm to the user.

[0095] 304: Obtain a first signal to control the oxygen production module 210 to be turned off. The first signal indicates that the oxygen concentration value in the first storage box 100 is greater than or equal to a preset concentration value.

[0096] That is, when it is determined that the oxygen concentration value in the first storage box 100 reaches the preset concentration value, the oxygen production module 210 is turned off. Specifically, the refrigeration device may include a gas detector such as an oxygen sensor, and the gas detector is used to detect the oxygen concentration value in the first storage box 100.

[0097] In the control method of the refrigeration equipment of this embodiment, by starting the oxygen production module 210 and the ionization module 400, the oxygen production module 210 generates oxygen, so that the first storage cavity 110 is in a high-oxygen environment, which is beneficial to maintaining the color of meat food and delaying discoloration. The ionization module 400 ionizes active particles, which can kill bacteria in the first storage box 100 and prevent the meat food from spoiling; and this method controls the ionization module 400 and the oxygen production module 210 to start, so that the ionization module 400 is ionized during the oxygen supply process, so that the ionization module 400 ionizes and sterilizes the first storage cavity 110 in a high-oxygen environment. The characteristic of the high-oxygen environment to promote ionization can be used to enhance the degree of ionization, effectively increase the concentration of active substances generated by ionization, and improve the sterilization effect.

[0098] 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: A first storage box, provided with a first storage cavity; an oxygen supply channel, one end of which is connected to the first storage cavity, and the other end of which is connected to an oxygen supply source, the oxygen supply channel being used to supply oxygen to the first storage cavity; and An ionization module is used to ionize and purify the first storage cavity.

2. The fresh-keeping device according to claim 1, characterized in that: The ionization module is configured to ionize and purify the first storage cavity when the oxygen delivery channel delivers oxygen.

3. The fresh-keeping device according to claim 1, characterized in that: The oxygen supply channel comprises an outlet communicated with the first storage cavity, and the ionization module is arranged at the outlet.

4. The fresh-keeping device according to claim 1, characterized in that: The fresh-keeping device further comprises an oxygen supply tube, the oxygen supply channel is constructed inside the oxygen supply tube, the oxygen supply tube comprises a first tube, one end of the first tube is connected to the oxygen supply source, and the other end is connected to the first storage box, the first tube comprises a first tube opening communicating with the first storage cavity, and the first tube opening forms a first cross section; The orthographic projection formed by the ionization module on the first section covers part of the first section, so that part of the oxygen output by the oxygen supply tube enters the first storage cavity, and part of the oxygen enters the first storage cavity after being ionized by the ionization module.

5. The fresh-keeping device according to claim 4, characterized in that: The ionization module comprises a housing, and the housing is provided with an air inlet; The oxygen supply pipe also includes a second pipe, at least a part of the second pipe is arranged in the first pipe, the pipe wall of the second pipe is opposite to the pipe wall of the first pipe and a flow gap is formed between them, the flow gap is connected with the first storage cavity, one end of the second pipe is connected with the shell and is connected with the air inlet; during the oxygen supply process, the oxygen located on the outside of the second pipe enters the first storage cavity through the flow gap, and the oxygen entering the second pipe enters the first storage cavity after being ionized by the ionization module.

6. The fresh-keeping device according to any one of claims 1 to 5, characterized in that: The ionization module includes a power supply, an excitation electrode and a receiving electrode. The excitation electrode and the receiving electrode are arranged at intervals. The power supply is used to generate a potential difference between the excitation electrode and the receiving electrode to discharge the excitation electrode.

7. The fresh-keeping device according to claim 6, characterized in that: The excitation electrode and the receiving electrode are arranged along the output direction of oxygen, and the receiving electrode is located at a side of the excitation electrode away from the oxygen supply source.

8. The fresh-keeping device according to claim 7, characterized in that: The excitation electrode comprises a needle electrode, and the needle electrode extends along the output direction of oxygen; The receiving electrode comprises a bottom plate and a convex tube, the convex tube is connected to a side of the bottom plate facing the exciting electrode, the bottom plate is provided with a first air outlet hole connected to the convex tube, the needle electrode is plugged into the convex tube, and is spaced apart from the tube wall of the convex tube; Alternatively, the receiving electrode comprises a bottom plate, at least a portion of the bottom plate protrudes toward a side away from the needle electrode, the bottom plate is provided with a second air outlet, and one end of the needle electrode faces the second air outlet.

9. The fresh-keeping device according to claim 6, characterized in that: The receiving electrode is configured to be cylindrical around the exciting electrode, and the exciting electrode is arranged inside the receiving electrode.

10. The fresh-keeping device according to claim 9, characterized in that: The excitation electrode includes a connecting rod and a plurality of needle electrodes connected to the connecting rod, each of the needle electrodes extends radially along the connecting rod, the receiving electrode is constructed in a cylindrical shape around the axial direction of the connecting rod, and the receiving electrode is provided with a plurality of third air outlets, and one end of each of the needle electrodes faces one of the third air outlets.

11. The fresh-keeping device according to claim 6, characterized in that: The preservation device also includes a humidity sensor, which is used to detect the humidity value in the first storage cavity. The power supply includes a control circuit, and the control circuit is configured to adjust the potential difference between the excitation electrode and the receiving electrode according to the humidity value detected by the humidity sensor; wherein, when the humidity sensor detects that the humidity value in the first storage cavity increases, the control circuit adjusts the potential difference between the excitation electrode and the receiving electrode to decrease.

12. The fresh-keeping device according to any one of claims 1 to 5, characterized in that: The oxygen supply source is an oxygen production module, and the fresh-keeping device includes the oxygen production module; The fresh-keeping device also includes a gas detector, which is used to detect the oxygen concentration value in the first storage cavity. The oxygen production module is configured as follows: when the oxygen concentration value is less than a preset concentration value, the oxygen production module starts oxygen production; when the oxygen concentration value is greater than or equal to the preset concentration value, the oxygen production module stops oxygen production.

13. Refrigeration equipment, characterized in that The fresh-keeping device comprises the fresh-keeping device according to any one of claims 1 to 12.

14. A method for controlling a refrigeration device, characterized in that: The refrigeration device includes a first storage box, an oxygen production module and an ionization module, wherein the oxygen production module is connected to the first storage box, the oxygen production module is used to provide oxygen to the first storage box, and the ionization module is used to ionize and purify the first storage box; The control method comprises: Controlling the oxygen production module and the ionization module to start; A first signal is obtained to control the oxygen production module and the ionization module to be turned off, wherein the first signal is characterized in that the oxygen concentration value in the first storage box is greater than or equal to a preset concentration value.

15. The control method for refrigeration equipment according to claim 14, characterized in that: The controlling the ionization module to start includes: Controlling the ionization module to execute a first working mode, wherein the voltage in the first working mode is a first voltage; The ionization module is controlled to execute a second working mode, wherein the voltage in the second working mode is a second voltage, and the second voltage is less than the first voltage.

16. The control method for refrigeration equipment according to claim 15, characterized in that: The controlling the ionization module to execute the second working mode comprises: A second signal is obtained to control the ionization module to switch from the first working mode to the second working mode, wherein the second signal is characterized by the working time of the ionization module reaching a first time, or the air humidity value in the first storage box is greater than or equal to a preset humidity value.

17. The control method of refrigeration equipment according to claim 14, characterized in that: Before the controlling the oxygen production module and the ionization module to start, the method further includes: A third signal is obtained, where the third signal indicates that the oxygen concentration value in the first storage box is less than the preset concentration value.

18. A method for controlling a refrigeration device, characterized in that: The refrigeration device includes a first storage box, an oxygen production module and an ionization module, wherein the oxygen production module is connected to the first storage box, the oxygen production module is used to provide oxygen to the first storage box, and the ionization module is used to ionize and purify the first storage box; The control method comprises: Controlling the oxygen production module and the ionization module to start, and controlling the ionization module to shut down after a first period of time; A first signal is obtained to control the oxygen production module to be turned off, wherein the first signal is characterized in that the oxygen concentration value in the first storage box is greater than or equal to a preset concentration value.

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