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

Abstract

The present invention discloses a fresh-keeping device, a refrigeration device and a control method for the refrigeration device. The fresh-keeping device includes a first storage box, an oxygen delivery channel and an ionization module. The first storage box is provided with a first storage cavity; one end of the oxygen delivery channel is communicated with the first storage cavity, and the other end is communicated with an oxygen supply source. The oxygen delivery channel is used to deliver oxygen to the first storage cavity; the ionization module is used to ionize and purify the first storage cavity. By delivering oxygen to the first storage cavity, the first storage cavity is in a high-oxygen environment, and the high-concentration oxygen can delay the color change of meat products; by providing an ionization module, the ionization module can discharge to generate active particles to realize the sterilization and purification of the first storage cavity, effectively slowing down the spoilage of meat products. In this way, the fresh-keeping device has a high-oxygen function and a sterilization function, enabling meat products to be stored in a high-oxygen and sterilized environment, and improving the fresh-keeping quality of meat products.

Description

Technical Field

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

[0002] Food fresh-keeping technology is an important technology related to human daily life. In related technologies, for the fresh-keeping of meat food, the traditional method is to store the meat food in a low-temperature and low-oxygen environment. However, myoglobin or oxymyoglobin in the meat food will generate metmyoglobin in a low-oxygen environment, presenting a brown color, resulting in a darkened meat color and affecting the appearance of the food. And a high-oxygen environment will promote the growth and reproduction of microorganisms, and easily accelerate the spoilage of meat food. Therefore, how to improve the fresh-keeping quality of meat food has become an urgent problem to be solved. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. For this purpose, the present invention provides a fresh-keeping device that can provide oxygen to the first storage cavity through an oxygen supply channel and perform ionization purification through an ionization module, so that meat ingredients are in a high-oxygen and sterilized environment, which can improve the fresh-keeping quality of meat food.

[0004] The present invention also provides a refrigeration device.

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

[0006] The fresh-keeping device according to the first aspect embodiment of the present invention includes:

[0007] A first storage box provided with a first storage cavity;

[0008] An oxygen supply channel with one end communicating with the first storage cavity and the other end communicating with an oxygen supply source, the oxygen supply channel being used to supply oxygen to the first storage cavity; and

[0009] An ionization module for performing ionization purification on the first storage cavity.

[0010] The fresh-keeping device according to the first aspect embodiment of the present invention has at least the following beneficial effects:

[0011] By setting up an oxygen delivery 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 products and delay color change, thereby facilitating the maintenance of the color of meat ingredients and the preservation of meat products. Additionally, by setting up an ionization module, the discharge of the ionization module can excite active particles, and the active particles generated by ionization can kill microorganisms in the first storage cavity, achieving sterilization and purification and effectively slowing down the spoilage of meat products. Thus, through the above settings, the preservation device of the present invention has a high-oxygen function and a sterilization function, enabling meat products to be stored in a high-oxygen and sterilized environment, which can improve the preservation quality of meat products.

[0012] According to some embodiments of the present invention, the ionization module is configured to ionize and purify the first storage cavity when the oxygen delivery channel delivers oxygen.

[0013] According to some embodiments of the present invention, the oxygen delivery channel includes an outlet communicating with the first storage cavity, and the ionization module is disposed at the outlet.

[0014] According to some embodiments of the present invention, the preservation device further includes an oxygen delivery pipe, and the interior of the oxygen delivery pipe constructs the oxygen delivery channel. The oxygen delivery pipe includes a first pipe, one end of the first pipe is connected to the oxygen supply source, and the other end is connected to the first storage box. The first pipe includes a first pipe orifice communicating with the first storage cavity, and the first pipe orifice encloses a first cross-section;

[0015] The positive projection of the ionization module formed on the first cross-section covers a part of the first cross-section, so that part of the oxygen output by the oxygen delivery pipe enters the first storage cavity, and part of the oxygen is ionized by the ionization module and then enters the first storage cavity.

[0016] According to some embodiments of the present invention, the ionization module includes a housing, and the housing is provided with an air inlet;

[0017] The oxygen delivery pipe further includes a second pipe, at least a part of the second pipe is disposed inside the first pipe, and an over-flow gap is formed between the pipe wall of the second pipe and the pipe wall of the first pipe and is spaced apart. The over-flow gap communicates with the first storage cavity, and one end of the second pipe is connected to the housing and communicates with the air inlet; during the oxygen delivery process, the oxygen located outside the second pipe enters the first storage cavity through the over-flow gap, and the oxygen entering the second pipe is ionized by the ionization module and then enters the first storage cavity.

[0018] 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 spaced apart, 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.

[0019] According to some embodiments of the present invention, the excitation electrode and the receiving electrode are arranged along the output direction of oxygen, and the receiving electrode is located on the side of the excitation electrode away from the oxygen supply source.

[0020] According to some embodiments of the present invention, the excitation electrode includes a needle electrode that extends along the output direction of oxygen;

[0021] Wherein, the receiving electrode includes a bottom plate and a convex tube. The convex tube is connected to the side of the bottom plate facing the excitation electrode. The bottom plate is provided with a first air outlet communicating with the convex tube. The needle electrode is inserted into the convex tube and is spaced from the tube wall of the convex tube;

[0022] Alternatively, the receiving electrode includes a bottom plate, and at least a part of the bottom plate bulges toward the 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.

[0023] According to some embodiments of the present invention, the receiving electrode is configured as a cylinder surrounding the excitation electrode, and the excitation electrode is arranged inside the receiving electrode.

[0024] 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 needle electrode extends along the radial direction of the connecting rod. The receiving electrode is configured as a cylinder surrounding the axial direction of the connecting rod. The receiving electrode is provided with a plurality of third air outlets, and one end of each needle electrode faces one of the third air outlets.

[0025] According to some embodiments of the present invention, the fresh-keeping device further includes a humidity sensor for detecting the humidity value in the first storage cavity. The power supply includes a control circuit 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 an increase in the humidity value in the first storage cavity, the control circuit adjusts the potential difference between the excitation electrode and the receiving electrode to decrease.

[0026] According to some embodiments of the present invention, the oxygen supply source is an oxygen generation module, and the fresh-keeping device includes the oxygen generation module;

[0027] The fresh-keeping device further includes a gas detector for detecting the oxygen concentration value in the first storage cavity. The oxygen generation module is configured to: start oxygen generation when the oxygen concentration value is less than a preset concentration value; stop oxygen generation when the oxygen concentration value is greater than or equal to the preset concentration value.

[0028] The refrigeration arrangement according to an embodiment of the second aspect of the present invention includes the fresh-keeping device described in any of the above embodiments.

[0029] The refrigeration equipment according to an embodiment of the second aspect of the present invention has at least the following beneficial effects:

[0030] By adopting the fresh-keeping device of the embodiment of the first aspect, the fresh-keeping device conveys oxygen to the first storage cavity through the oxygen delivery 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 products and delay discoloration, thereby being beneficial to maintaining the color of meat ingredients and being beneficial to the preservation of meat products. It also sets up an ionization module. The ionization of the ionization module can excite active particles, and the active particles ionized can kill microorganisms in the first storage cavity to achieve sterilization and purification, effectively slowing down the spoilage of meat products. In this way, the fresh-keeping device of the refrigeration equipment adopts the above settings, having a high-oxygen function and a sterilization function, enabling meat products to be stored in a high-oxygen and sterilized environment, and improving the preservation quality of meat products.

[0031] The control method of the refrigeration arrangement according to an embodiment of the third aspect of the present invention, the refrigeration equipment includes a first storage box, an oxygen generation module and an ionization module. The oxygen generation module is communicated with the first storage box. The oxygen generation module is used to provide oxygen for the first storage box, and the ionization module is used to ionize and purify the inside of the first storage box;

[0032] The control method includes:

[0033] Control the oxygen generation module and the ionization module to start;

[0034] Obtain a first signal and control the oxygen generation module and the ionization module to close. The first signal indicates that the oxygen concentration value in the first storage box is greater than or equal to a preset concentration value.

[0035] The control method of the refrigeration equipment according to an embodiment of the third aspect of the present invention has at least the following beneficial effects:

[0036] In the control method of the refrigeration equipment, by starting the oxygen generation module and the ionization module, the oxygen generation module generates oxygen, making the inside of the first storage box in a high-oxygen environment, which is beneficial to maintaining the color of meat products and delaying discoloration. The ionization module ionizes active particles, which can kill microorganisms in the first storage box and prevent the spoilage of meat products. And this method controls both the ionization module and the oxygen generation module to start, so that the ionization module ionizes during the oxygen delivery process, and thus the ionization module ionizes and sterilizes the first storage box in a high-oxygen environment. Utilizing the characteristic that the high-oxygen environment promotes ionization, the ionization degree can be enhanced, effectively increasing the concentration of active substances generated by ionization, and improving the sterilization effect.

[0037] According to some embodiments of the present invention, the control to start the ionization module includes:

[0038] Controlling the ionization module to execute a first working mode, and the voltage in the first working mode is a first voltage;

[0039] Controlling the ionization module to execute a second working mode, and the voltage in the second working mode is a second voltage, and the second voltage is less than the first voltage.

[0040] According to some embodiments of the present invention, the control to make the ionization module execute the second working mode includes:

[0041] Obtaining a second signal, and controlling the ionization module to switch from the first working mode to the second working mode, where the second signal indicates that the working duration of the ionization module reaches a first duration, or the air humidity value in the first storage box is greater than or equal to a preset humidity value.

[0042] According to some embodiments of the present invention, before controlling the oxygen generation module and the ionization module to start, it further includes:

[0043] Obtaining a third signal, where the third signal indicates that the oxygen concentration value in the first storage box is less than the preset concentration value.

[0044] According to the control method of the refrigeration setting in the fourth aspect embodiment of the present invention, the refrigeration device includes a first storage box, an oxygen generation module and an ionization module. The oxygen generation module is communicated with the first storage box, the oxygen generation module is used to provide oxygen for the first storage box, and the ionization module is used to ionize and purify the inside of the first storage box;

[0045] The control method includes:

[0046] Controlling the oxygen generation module and the ionization module to start, and controlling the ionization module to turn off after a first duration;

[0047] Obtaining a first signal, and controlling the oxygen generation module to turn off, where the first signal indicates that the oxygen concentration value in the first storage box is greater than or equal to the preset concentration value.

[0048] According to the control method of the refrigeration device in the fourth aspect embodiment of the present invention, it has at least the following beneficial effects:

[0049] In the control method of the refrigeration device, by starting the oxygen generation module and the ionization module, the oxygen generation module generates oxygen, making the first storage box in a high-oxygen environment, which is beneficial to maintaining the color of meat products and delaying discoloration. The ionization module ionizes active particles, which can kill microorganisms in the first storage box and prevent meat products from spoiling. Moreover, in this method, by controlling both the ionization module and the oxygen generation module to start, the ionization module ionizes during the oxygen delivery process, so that the ionization module ionizes and sterilizes the first storage box in a high-oxygen environment. Utilizing the characteristic that the high-oxygen environment promotes ionization can enhance the ionization degree, effectively increase the concentration of active substances generated by ionization, and improve the sterilization effect.

[0050] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] The present invention will be further described below in conjunction with the drawings and embodiments, where:

[0052] Figure 1 is a schematic diagram of the preservation device according to an embodiment of the present invention;

[0053] Figure 2 is an assembly schematic diagram of the ionization module and the oxygen delivery pipe according to an embodiment of the present invention;

[0054] Figure 3 is an ionization schematic diagram of the ionization module according to an embodiment of the present invention;

[0055] Figure 4 is a structural schematic diagram of the ionization module according to the first embodiment of the present invention;

[0056] Figure 5 is Figure 4 a schematic diagram of the excitation electrode and the receiving electrode of the ionization module shown;

[0057] Figure 6 is a structural schematic diagram of the ionization module according to the second embodiment of the present invention;

[0058] Figure 7 is Figure 6 a schematic diagram of the excitation electrode and the receiving electrode of the ionization module shown;

[0059] Figure 8 is a structural schematic diagram of the ionization module according to the third embodiment of the present invention;

[0060] Figure 9 is Figure 8 a schematic diagram of the excitation electrode and the receiving electrode of the ionization module shown;

[0061] Figure 10 is a first flowchart of the control method of the refrigeration device according to the present invention;

[0062] Figure 11 This is the second flow chart of the control method of the refrigeration device of the present invention;

[0063] Figure 12 This is the third flow chart of the control method of the refrigeration device of the present invention;

[0064] Figure 13 This is the fourth flow chart of the control method of the refrigeration device of the present invention.

[0065] Reference numerals in the attached drawings:

[0066] Fresh-keeping device 10;

[0067] First storage box 100; First storage cavity 110;

[0068] Oxygen supply source 200; Oxygen generation module 210;

[0069] Oxygen delivery pipe 300; Oxygen delivery channel 300a; Outlet 300b; First pipe 310; First pipe orifice 311; Second pipe 320; Flow-through gap 300c;

[0070] Ionization module 400; Housing 410; Air inlet 411; Power supply 420;

[0071] Excitation electrode 430; Needle electrode 431; Connecting piece 432; Connecting rod 433;

[0072] Receiving electrode 440; Bottom plate 441; First air outlet 4411; Second air outlet 4412; Third air outlet 4413; Convex pipe 442. Detailed implementation manners

[0073] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0074] In the description of the present invention, it should be understood that for the orientation description, such as up, down, etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings, and is 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 thus should not be construed as a limitation of the present invention.

[0075] In the description of the present invention, "a plurality of" refers to more than two. If the first and the second are described, it is only for the purpose of distinguishing technical features, and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0076] In the description of the present invention, unless otherwise clearly defined, terms such as "arrangement", "installation", "connection", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0077] In the related art, for the preservation of meat products, traditionally, the meat products are stored in a low-temperature and low-oxygen environment. However, myoglobin or oxymyoglobin in the meat products will generate metmyoglobin in a low-oxygen environment, presenting a brown color, resulting in a darkened meat color and affecting the appearance of the food. And a high-oxygen environment will promote the growth and reproduction of microorganisms, and easily accelerate the spoilage of meat products.

[0078] To improve the preservation quality of meat products, the present invention provides a preservation device. The preservation 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 Figure 11, the preservation device 10 includes a first storage box 100, an oxygen supply channel 300a and an ionization module 400.

[0079] Among them, a first storage cavity 110 is provided inside the first storage box 100 for storing items to be refrigerated. In one embodiment, the first storage box 100 serves as a meat storage box for storing meat products. When the preservation device 10 is applied to refrigeration equipment, the first storage box 100 is arranged in the storage chamber of the refrigeration equipment.

[0080] One end of the oxygen supply channel 300a is communicated with the first storage cavity 110, and the other end is communicated with an oxygen supply source 200. The oxygen supply channel 300a is used to supply oxygen to the first storage cavity 110. By supplying 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 oxygen can delay the formation of metmyoglobin, which is beneficial to maintaining the bright red color of meat products, delaying color change, and is beneficial to the preservation of meat products. Among them, the oxygen supply channel 300a can be formed by a component independent of the first storage box 100 such as an oxygen supply pipe, or can be formed by the box wall of the first storage box 100 itself.

[0081] It can be understood that the oxygen supply source 200 can be an external oxygen supply device, or an oxygen treatment device configured for the preservation device 10 itself, for example, it can be an oxygen generation device. When the preservation device 10 is applied to refrigeration equipment, the oxygen supply source 200 can be an oxygen generation device configured on the refrigeration equipment.

[0082] The ionization module 400 is used to ionize and purify the first storage cavity 110. When the ionization module 400 discharges, oxygen can be ionized to excite O - 、O + 、O2 + 、ground state oxygen atoms O, excited state oxygen atoms O*, O3 and other active substances. These ionized active substances can kill microorganisms such as bacteria, prevent microorganisms from breeding on meat products, achieve sterilization and purification of the first storage cavity 110, and effectively slow down the spoilage of meat products. 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 utilize the characteristic of promoting ionization in the high-oxygen environment to enhance the ionization degree of the ionization module 400, thereby increasing the concentration of ionized active particles and improving the sterilization effect.

[0083] The fresh-keeping device 10 according to the embodiment of the present invention transports oxygen to the first storage cavity 110 by setting the oxygen delivery channel 300a, so that the first storage cavity 110 is in a high-oxygen environment. High-concentration oxygen can delay the formation of metmyoglobin in meat products and delay color change, thus being beneficial to maintaining the color of meat ingredients and being beneficial to the preservation of meat products. The ionization module 400 is also provided. Discharging of the ionization module 400 can excite active particles, and the microorganisms in the first storage cavity 110 are killed by the ionized active particles, achieving sterilization and purification, and effectively slowing down the spoilage of meat products. In this way, the fresh-keeping device 10 of the present invention, through the above settings, has a high-oxygen function and a sterilization function, enables meat products to be stored in a high-oxygen and sterilized environment, and can improve the fresh-keeping quality of meat products.

[0084] In some embodiments, the ionization module 400 is configured to ionize and purify the first storage cavity 110 when the oxygen delivery channel 300a transports oxygen, that is, the ionization module 400 ionizes during the oxygen delivery process. In this way, during the oxygen delivery process of the oxygen delivery channel 300a, the oxygen concentration in the first storage cavity 110 is increased, so that the first storage cavity 110 is in a high-oxygen environment. By ionizing the ionization module 400 in the high-oxygen environment and utilizing the characteristic of promoting ionization in the high-oxygen environment, the ionization degree of the ionization module 400 is enhanced, the concentration of ionized active substances can be increased, and the sterilization effect can be effectively improved.

[0085] In some embodiments, the oxygen delivery channel 300a includes an outlet 300b communicating with the first storage cavity 110. As Figure 1 shown, the ionization module 400 is arranged at the outlet 300b.

[0086] By arranging the ionization module 400 at the outlet 300b of the oxygen delivery channel 300a, on the one hand, when the oxygen delivered by the oxygen delivery channel 300a flows into the first storage cavity 110 from the outlet 300b, the oxygen will first pass through the ionization module 400, which can enable a sufficient amount of oxygen to participate in ionization, further improving the ionization degree; on the other hand, the ionized active substances are more likely to diffuse from the outlet 300b to the periphery of the first storage cavity 110, enabling the active substances to move to various positions of the first storage cavity 110 as much as possible and reach the surfaces of various food ingredients for sterilization; moreover, the ionized active substances have a survival period. The ionization module 400 is arranged at the outlet 300b, making the distance between the ionization module 400 and the bearing surface of the first storage cavity 110 appropriate (compared with being arranged in the oxygen delivery channel 300a or the inlet of the oxygen delivery channel 300a), so that the distance is not too far to cause the inactivation of the active substances and fail to play a sterilization role.

[0087] It should be understood that the ionization module 400 can be entirely located within the first storage cavity 110 or partially located within the first storage cavity 110, as long as the ionization module 400 is located at the outlet 300b of the oxygen delivery channel 300a.

[0088] In some embodiments, the freshness preservation device 10 includes an oxygen delivery pipe, and the above-mentioned oxygen delivery channel 300a is constructed through the oxygen delivery pipe. Please refer to Figure 2 , in one embodiment, the oxygen delivery pipe 300 includes a first pipe 310. One end of the first pipe 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 pipe 310 connected to the first storage box 100 is provided with a first pipe orifice 311 communicating with the first storage cavity 110, and the first pipe orifice 311 encloses a first cross-section (not labeled). Among them, the orthographic projection of the ionization module 400 on the first cross-section covers a part of the first cross-section, so that part of the oxygen output by the oxygen delivery pipe 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.

[0089] That is to say, when the oxygen delivered by the oxygen delivery pipe 300 flows out from the first pipe orifice 311, part of the oxygen enters the ionization module 400 to participate in ionization and excites active particles to enter the first storage cavity 110, and part of the oxygen directly enters the first storage cavity 110 without ionization. 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 the meat food ingredients, and the active particles can sterilize the meat food ingredients, ensuring the storage quality of the meat food.

[0090] In one embodiment, please continue to refer to Figure 2, the ionization module 400 includes a housing 410, and an air inlet 411 is provided on the housing 410. The oxygen delivery pipe 300 includes a second pipe 320, at least a part of the second pipe 320 is disposed inside the first pipe 310, the pipe wall of the second pipe 320 is disposed opposite to the pipe wall of the first pipe 310, and a flow-through gap 300c is formed therebetween at an interval, and the flow-through gap 300c communicates with the first storage cavity 110. One end of the second pipe 320 is connected to the housing 410 of the ionization module 400, and the second pipe 320 communicates with the air inlet 411.

[0091] Specifically, during the oxygen delivery process, when the oxygen input into the first pipe 310 by the oxygen supply source 200 flows to the second pipe 320, a part of the oxygen enters the flow-through gap 300c between the second pipe 320 and the first pipe 310 (i.e., outside the second pipe 320), and a part of the oxygen enters the second pipe 320. The oxygen outside the second pipe 320 directly enters the first storage cavity 110 through the above-mentioned flow-through gap 300c, and the oxygen entering the second pipe 320 enters the housing 410 of the ionization module 400 from the air inlet 411, and active particles are ionized by the ionization module 400 and enter the first storage cavity 110.

[0092] In this way, through the above settings in this embodiment, the oxygen delivery pipe 300 is designed with a double-layer structure of an inner pipe and an outer pipe. The second pipe 320 divides the oxygen delivery channel 300a into two flow paths, so that the oxygen in the first pipe 310 is shunted before flowing out from the outlet 300b of the oxygen delivery channel 300a. The second pipe 320 is communicated with 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 is ionized, further improving the ionization degree, significantly increasing the concentration of the ionized active particles, and significantly improving the sterilization and purification effect.

[0093] It can be understood that a connection structure can be provided between the second pipe 320 and the first pipe 310. For example, a connecting arm (not shown in the figure) can be provided between the pipe wall of the second pipe 320 and the pipe wall of the first pipe 310 to fix the second pipe 320 to the first pipe 310. In one embodiment, the second pipe 320 and the first pipe 310 are integrally formed.

[0094] In one embodiment, the gap distance at any part between the pipe wall of the second pipe 320 and the pipe wall of the first pipe 310 is equal. For example, when both the second pipe 320 and the first pipe 310 are provided as circular pipes, the second pipe 320 and the first pipe 310 can be coaxially arranged.

[0095] 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 cause the excitation electrode 430 to discharge. Among them, the excitation electrode 430 is a high-voltage electrode, and the receiving electrode 440 is a ground electrode.

[0096] Specifically, the power supply 420 applies high-voltage electricity between the excitation electrode 430 and the receiving electrode 440 to cause the excitation electrode 430 to discharge, which can ionize oxygen to produce O - , O + , O2 + , ground-state oxygen atoms O, excited-state oxygen atoms O*, O3 and other active particles. These particles have a bactericidal effect. Since 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. The excitation electrode 430 ionizes the high-concentration oxygen to produce a high-concentration of active particles, and the bactericidal effect is good. Moreover, the ionized charged particles are accelerated towards 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, causing them to move towards the receiving electrode 440 together, thereby generating an ion wind blowing towards the receiving electrode 440, realizing windless airflow acceleration, so that the above-mentioned active particles have greater kinetic energy and can quickly diffuse to the food in the first storage cavity 110 to achieve rapid sterilization and purification; at the same time, the active particles can move to various positions of the first storage cavity 110 under the kinetic energy, and can purify the food at any position to achieve full-range sterilization and purification. Moreover, the kinetic energy of the ion wind can also drive the un-ionized oxygen to accelerate, enabling the high-concentration oxygen to quickly contact the food at various places in the first storage cavity 110 and improving the fresh-keeping effect.

[0097] Since the ionization module 400 generates an ion wind blowing towards the receiving electrode 440 during ionization, in some embodiments, the excitation electrode 430 and the receiving electrode 440 are arranged along the oxygen output direction, and the receiving electrode 440 is located on the side of the excitation electrode 430 away from the oxygen supply source 200.

[0098] 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, and the needle electrode 431 extends along the oxygen output direction. 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. Among them, the number of needle electrodes 431 can be set to one or multiple.

[0099] In one embodiment, refer to Figure 4and Figure 5 As shown, the receiving electrode 440 includes a bottom plate 441 and a convex tube 442. The convex tube 442 is connected to one side of the bottom plate 441 facing the excitation electrode 430. The bottom plate 441 is provided with a first air outlet hole 4411 communicating with the convex tube 442. The needle electrode 431 is inserted into the convex tube 442 and is 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 hole 4411 through the convex tube 442. The cooperation of the convex tube 442 and the bottom plate 441 can play a role in gathering oxygen, enabling the oxygen entering the ionization module 400 to be fully ionized, effectively reducing the un-ionized oxygen flowing out from the first air outlet hole 4411, and improving the ionization degree of oxygen. It can be understood that when the number of the needle electrodes 431 is set to be multiple, the number of the convex tubes 442 is also set to be multiple, and the multiple convex tubes 442 correspond to the multiple needle electrodes 431 one by one.

[0100] In another embodiment, referring to Figure 6 and Figure 7 As shown, the receiving electrode 440 includes a bottom plate 441, and at least part of the bottom plate 441 bulges toward the side away from the needle electrode 431. The bottom plate 441 is provided with a second air outlet hole 4412, and one end of the needle electrode 431 faces the second air outlet hole 4412. Similarly, by bulging at least part of the bottom plate 441 toward the side away from the needle electrode 431, a certain space can be reserved to block and temporarily store the un-ionized oxygen in time, so that the oxygen entering the ionization module 400 can be fully ionized, reducing the un-ionized oxygen flowing out from the second air outlet hole 4412, and improving the ionization degree of oxygen. Among them, the bottom plate 441 can form an arc-shaped bulge toward the side away from the needle electrode 431.

[0101] In some other embodiments, to further improve the ionization degree, the receiving electrode 440 can be constructed as a cylinder surrounding the excitation electrode 430, and the excitation electrode 430 is arranged inside the receiving electrode 440. Please refer to Figure 8 and Figure 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 along the radial direction of the connecting rod 433. The receiving electrode 440 is constructed as a cylinder surrounding the axial direction of the connecting rod 433, and the receiving electrode 440 is provided with a plurality of third air outlet holes 4413, and one end of each needle electrode 431 faces a third air outlet hole 4413.

[0102] Thus, by constructing the receiving electrode 440 to surround the exciting electrode 430 in a cylindrical shape and arranging the exciting electrode 430 inside the cylinder formed by the receiving electrode 440, a plurality of needle electrodes 431 can be arranged on the connecting rod 433 both radially and circumferentially, greatly increasing the number of needle electrodes 431 and providing needle electrodes 431 in all directions. Therefore, during the process of oxygen flowing through the ionization module 400, it can successively contact different needle electrodes 431 for ionization, effectively preventing oxygen from flowing out without being ionized and greatly improving the ionization degree of oxygen.

[0103] In some embodiments, the freshness preservation device 10 further includes a humidity sensor for detecting the humidity value inside the first storage cavity 110. The power supply 420 includes a control circuit configured to adjust the potential difference between the exciting electrode 430 and the receiving electrode 440 according to the humidity value detected by the humidity sensor. Wherein, when the humidity sensor detects an increase in the humidity value inside the first storage cavity 110, the control circuit adjusts the potential difference between the exciting electrode 430 and the receiving electrode 440 to decrease.

[0104] It should be noted that the greater the air humidity, the more conducive it is to ionization. Therefore, when the humidity inside the first storage cavity 110 increases, the voltage is reduced. 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 reduction. In this embodiment, the humidity sensor is used to detect the humidity value inside the first storage cavity 110, enabling the control circuit to adjust the voltage between the exciting electrode 430 and the receiving electrode 440 according to the detected humidity value. When the humidity is high, reducing the voltage can reduce the power consumption of the power supply 420.

[0105] In some embodiments, the oxygen supply source 200 is an oxygen generation module 210, which can be an electrochemical oxygen generation module, such as a single-electrode electrochemical oxygen generation module or an electrochemical oxygen generation module with an array of electrodes. It should be noted that the electrochemical oxygen generation module is a mature existing technology and will not be elaborated in detail here.

[0106] In one embodiment, the freshness preservation device 10 can further include a second storage box for storing fruits and vegetables. The oxygen generation module 210 can be connected to the second storage box through a pipeline. The oxygen generation module 210 can react with the oxygen inside the second storage box to create a low-oxygen environment inside 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 beneficial to the freshness preservation of fruits and vegetables.

[0107] In some embodiments, the freshness preservation device 10 further includes a gas detector configured to detect the oxygen concentration value in the first storage chamber 110. The oxygen generation module 210 is configured to: start oxygen generation when the oxygen concentration value is less than a preset concentration value; and stop oxygen generation when the oxygen concentration value is greater than or equal to the preset concentration value. Wherein, the gas detector may be an oxygen sensor. The preset concentration value may be a specific numerical value or a numerical range.

[0108] With the above settings, the oxygen generation module 210 is linked with the gas detector, facilitating the opening and closing control of the oxygen generation module 210, enabling the oxygen generation module 210 to adjust the amount of oxygen delivered into the first storage chamber 110 according to actual needs, thereby better preserving meat products. Specifically, when the gas detector detects a low oxygen concentration, the oxygen generation module 210 starts oxygen generation to ensure a high oxygen concentration in the first storage chamber 110, which is beneficial for the preservation of meat products; when the oxygen concentration reaches the preset concentration value and is sufficient to meet the preservation and sterilization requirements of meat products, the oxygen generation module 210 stops oxygen generation, avoiding waste of resources caused by excessive generated oxygen and reducing the power consumption of the oxygen generation module 210 at the same time.

[0109] Specifically, the freshness preservation device 10 further includes a control board, and the gas detector and the oxygen generation module 210 are electrically connected to the control board respectively. When the gas detector detects that the oxygen concentration value in the first storage chamber 110 is less than the preset concentration value, it sends a first detection signal to the control board, triggering the control board to output a first control instruction to control the oxygen generation module 210 to start oxygen generation. When the gas detector detects that the oxygen concentration value in the first storage chamber 110 is greater than or equal to the preset concentration value, it sends a second detection signal to the control board, triggering the control board to output a second control instruction to control the oxygen generation module 210 to stop oxygen generation.

[0110] The present invention also provides a refrigeration device, which includes the freshness preservation device 10 conceived based on any of the above embodiments. Wherein, the refrigeration device may be a refrigerator or a freezer.

[0111] Since the refrigeration device adopts all the technical solutions of the freshness preservation device 10 in the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments.

[0112] The present invention also provides a control method for the refrigeration device of the first embodiment. The control method of the refrigeration device is applied to the refrigeration device conceived based on the above embodiments. The refrigeration device includes a box body, a box door connected to the box body, and further includes the first storage box 100, the oxygen delivery channel 300a, the ionization module 400, and the oxygen generation module 210 of the above embodiments. These components are arranged in the box body. For the structures and functions of these components, please refer to the above embodiments and will not be elaborated here.

[0113] Please refer toFigure 10 , the control method of the refrigeration device includes:

[0114] Step 102: Control the oxygen generation module 210 and the ionization module 400 to start.

[0115] By starting the oxygen generation module 210 and the ionization module 400, the oxygen generation module 210 generates oxygen, and conveys the oxygen to the first storage box 100 through the oxygen delivery channel 300a, providing a high-oxygen environment for the first storage cavity 110. High-concentration oxygen can delay the formation of metmyoglobin, which is beneficial to maintaining the color of meat products and delaying discoloration; during the discharge process of the ionization module 400, active particles are generated, which can sterilize and purify the first storage cavity 110, preventing microorganisms from growing and multiplying on the meat products, and preventing the meat products from spoiling.

[0116] Step 104: Obtain a first signal and control the oxygen generation module 210 and the ionization module 400 to close. The first signal is characterized in that the oxygen concentration value in the first storage box 100 is greater than or equal to a preset concentration value.

[0117] That is, when it is determined that the oxygen concentration in the first storage box 100 reaches the preset concentration value, the oxygen generation module 210 and the ionization module 400 are closed. 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.

[0118] In the above control method of the refrigeration device, by starting the oxygen generation module 210 and the ionization module 400, the oxygen generation module 210 generates oxygen, making the first storage cavity 110 in a high-oxygen environment, which is beneficial to maintaining the color of meat products and delaying discoloration. The ionization module 400 ionizes active particles, which can kill bacteria in the first storage box 100 and prevent the meat products from spoiling; and in this method, by controlling both the ionization module 400 and the oxygen generation module 210 to start, the ionization module 400 performs ionization during the oxygen delivery process, so that the ionization module 400 performs ionization sterilization on the first storage cavity 110 in a high-oxygen environment. Utilizing the characteristic that the high-oxygen environment promotes ionization, the ionization degree can be enhanced, the concentration of active substances generated by ionization can be effectively increased, and the sterilization effect can be improved.

[0119] In some embodiments, the oxygen generation module 210 and the ionization module 400 can be started under the trigger of a fourth signal. The fourth signal can be a start signal triggered by a control device such as a control switch, or a closing signal of the box door. For example, the refrigeration device may include a control switch connected to the oxygen generation module 210 and the ionization module 400. When the user needs to actively start oxygen generation and ionization, by pressing the start button of the control switch, the fourth signal can be triggered.

[0120] In some embodiments, the fourth signal is characterized as a signal indicating the closing of the box door, that is, it is determined that the box door is closed. Understandably, the fourth signal is triggered after the box door is closed. The refrigeration device can detect the opening and closing state of the box door through door switch detection components such as microswitches or light sensors. When the door switch detection component detects that the box door is closed, the fourth signal is triggered. After the box door is closed, the oxygen generation module 210 and the ionization module 400 are started. Correspondingly, when the box door is not closed (in the open state), the oxygen generation module 210 and the ionization module 400 are not started, so as to prevent the user from opening the first storage box 100 when the box door is in the open state, resulting in the oxygen provided by the oxygen generation module 210 for the first storage box 100 running out of the refrigerator and causing waste, and at the same time preventing the charged particles generated by ionization from running out and causing harm to the user.

[0121] Please refer to Figure 11 , in one embodiment, in step 102 above, controlling the ionization module 400 to start may specifically include the following steps:

[0122] Step 1021: Control the ionization module 400 to execute the first working mode, and the voltage in the first working mode is the first voltage.

[0123] Step 1022: Control the ionization module 400 to execute the second working mode, and the voltage in the second working mode is the second voltage, and the second voltage is less than the first voltage.

[0124] Among them, when the ionization module 400 executes the second working mode, the ionization module 400 can work continuously, or the ionization module 400 can also work intermittently. It should be noted that the continuous work here is relative to the intermittent work, which means that the ionization module 400 is in a non-stop working state, not that the ionization module 400 does not shut down. When the oxygen concentration value in the first storage box 100 reaches the preset concentration value in step 104 above, the ionization module 400 and the oxygen generation module 210 are shut down together. In one embodiment, the ionization module 400 is configured to: turn on the ionization module 400 once every second time period, and the ionization module 400 works for a third time period each time it is turned on.

[0125] It can be understood that the ionization degree of the ionization module 400 is positively correlated with the voltage magnitude. 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. The second voltage is less than the first voltage, so the ionization degree of the ionization module 400 in the first working mode is greater than that in the second working mode. Thus, after the ionization module 400 is started, by controlling the ionization module 400 to first execute the first working mode, the ionization module 400 can first perform ionization sterilization on the first storage cavity 110 in a state of strong ionization degree, quickly generate a large number of active particles in a short time, enable the high-concentration active particles to quickly reach the food materials, and achieve rapid sterilization; since most of the bacteria in the first storage cavity 110 have been killed previously, weak ionization degree can meet the subsequent sterilization requirements. Therefore, after the ionization module 400 executes the first working mode, its second working mode is controlled, the working voltage is reduced to weaken the ionization degree, and the power consumption can be reduced.

[0126] In the above step 1022, controlling the ionization module 400 to execute the second working mode includes: obtaining a second signal and controlling the ionization module 400 to switch from the first working mode to the second working mode. The second signal is characterized in that the working duration of the ionization module 400 reaches a first duration, or the air humidity value in the first storage box 100 is greater than or equal to a preset humidity value.

[0127] That is to say, in one embodiment, within the first duration after the ionization module 400 is started, the ionization module 400 first executes the first working mode, and after the first duration, the ionization module 400 switches to the second working mode. It can be understood that the specific value of the first duration can be set according to the volume of the first storage box 100. The first durations corresponding to the first storage boxes 100 with different volumes are different. For the first storage box 100 with a larger volume, to ensure good sterilization and purification effects, the first duration can be set longer, and for the first storage box 100 with a smaller volume, the first duration can be set relatively shorter.

[0128] In another embodiment, the triggering condition for the ionization module 400 to switch from the first operating mode to the second operating mode can be that the air humidity value in the first storage box 100 is greater than or equal to a preset humidity value. The refrigeration device may include a humidity sensor, and the air humidity value in the first storage box 100 can be detected through the humidity sensor. It should be noted that the greater the air humidity, the more conducive it is 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 reduction. In this embodiment, by using humidity as the condition for the ionization module 400 to switch operating modes, 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 operating mode to the second operating mode. Through the effect of high humidity on promoting ionization, the voltage of the ionization module 400 is reduced, and the power consumption can be reduced.

[0129] Please refer to Figure 12 , the present invention also provides a control method for the refrigeration device of the second embodiment. The control method of this embodiment includes the following steps 202, 203 and 204. Among them, steps 202 and 204 are the same as steps 102 and 104 of the control method of the first embodiment. The main difference is that the control method of this embodiment further includes step 203 before step 204, which is described in detail below:

[0130] Step 202: Control the oxygen generation module 210 and the ionization module 400 to start. For details, please refer to step 102.

[0131] Step 203: Obtain a third signal, and the third signal indicates that the oxygen concentration value in the first storage box 100 is less than the preset concentration value.

[0132] That is, before starting the oxygen generation module 210 and the ionization module 400, it is also 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 previous oxygen generation reaches the preset oxygen concentration value and ends, and the user opens the box door to take and place food and then closes the box door again, the refrigeration device will not immediately start the oxygen generation module 210 due to the closing of the box door. Instead, it will first detect the oxygen concentration in the first storage cavity 110 and start oxygen generation only when it is determined that the oxygen concentration in the first storage cavity 110 is low, avoiding continuous oxygen generation when the first storage cavity 110 itself is in a high-oxygen environment, and further reducing the power consumption.

[0133] Step 204: Obtain a first signal and control the oxygen generation module 210 and the ionization module 400 to close. The first signal indicates that the oxygen concentration value in the first storage box 100 is greater than or equal to the preset concentration value. For details, please refer to step 104.

[0134] Please refer to Figure 13, the present invention also provides a control method for a refrigeration device according to a third embodiment. The control method for the 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 further includes the first storage box 100, the oxygen delivery channel 300a, the ionization module 400, and the oxygen generation module 210 of the above embodiment. These components are disposed inside the box body. For the structures and functions of these components, please refer to the above embodiment and will not be elaborated herein.

[0135] The control method for the refrigeration device in this embodiment includes:

[0136] 302: Control the oxygen generation module 210 and the ionization module 400 to start, and control the ionization module 400 to turn off after a first time period.

[0137] By starting the oxygen generation module 210 and the ionization module 400, the oxygen generation module 210 generates oxygen, and the oxygen can be delivered into the first storage box 100 through the oxygen delivery channel 300a to provide 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 color change; the ionization module 400 discharges to generate active particles, which can sterilize and purify the first storage cavity 110 to prevent microorganisms from growing and reproducing on the meat products and prevent the meat products from spoiling.

[0138] Control the ionization module 400 to turn off after the first time period, that is, after the ionization module 400 is started for the first time period, the ionization module 400 turns off. It can be understood that the specific value of the first time period can be set according to the volume of the first storage box 100. The first time periods corresponding to the first storage boxes 100 with 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 shorter.

[0139] Among them, the oxygen generation module 210 and the ionization module 400 can be started under the trigger of a fourth signal. The fourth signal can be a start signal triggered by a control device such as a control switch, or a closing signal of the box door. For example, the refrigeration device can include a control switch connected to the oxygen generation module 210 and the ionization module 400. When the user needs to actively start oxygen generation and ionization, by pressing the start button of the control switch, the fourth signal can be triggered.

[0140] In some embodiments, the fourth signal is characterized as the closing signal of the box door, that is, it is determined that the box door is closed. Understandably, the fourth signal is triggered after the box door is closed. The refrigeration device can detect the opening and closing state of the box door through door switch detection components such as microswitches or light sensors. When the door switch detection component detects that the box door is closed, the fourth signal is triggered. When it is determined that the box door is closed, the oxygen generation module 210 and the ionization module 400 are started. Correspondingly, when the box door is not closed (in the open state), the oxygen generation module 210 and the ionization module 400 are not started, so as to prevent the user from opening the first storage box 100 when the box door is in the open state, resulting in the oxygen provided by the oxygen generation module 210 for the first storage box 100 running out of the refrigerator and causing waste, and at the same time preventing the charged particles generated by ionization from running out and causing harm to the user.

[0141] 304: Obtain the first signal and control the oxygen generation module 210 to close. The first signal is characterized as the oxygen concentration value in the first storage box 100 being greater than or equal to the preset concentration value.

[0142] That is, when it is determined that the oxygen concentration value in the first storage box 100 reaches the preset concentration value, the oxygen generation module 210 is closed. 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.

[0143] In the control method of the refrigeration device in this embodiment, by starting the oxygen generation module 210 and the ionization module 400, the oxygen generation module 210 generates oxygen, making the first storage cavity 110 in a high-oxygen environment, which is beneficial to maintaining the color of meat products and delaying discoloration. The ionization module 400 ionizes active particles, which can kill bacteria in the first storage box 100 and prevent meat products from spoiling. And this method controls both the ionization module 400 and the oxygen generation module 210 to start, so that the ionization module 400 ionizes during the oxygen delivery process. Therefore, the ionization module 400 ionizes and sterilizes the first storage cavity 110 in a high-oxygen environment. Utilizing the characteristic that a high-oxygen environment promotes ionization, the ionization degree can be enhanced, the concentration of active substances generated by ionization can be effectively increased, and the sterilization effect can be improved.

[0144] The embodiments of the present invention have been described in detail above with reference to the drawings. However, the present invention is not limited to the above embodiments. Within the knowledge scope of those of ordinary skill in the art to which the present invention pertains, various changes can be made without departing from the purpose of the present invention.

Claims

1. Preservation device, characterized in that, Comprising: A first storage box provided with a first storage cavity; An oxygen delivery channel, one end of which is communicated with the first storage cavity and the other end of which is communicated with an oxygen supply source. The oxygen delivery channel is used to deliver oxygen to the first storage cavity, and the oxygen delivery channel includes an outlet communicated with the first storage cavity; And An ionization module arranged at the outlet. The ionization module is configured to ionize and purify the first storage cavity when the oxygen delivery channel delivers oxygen. The ionization module includes a housing provided with an air inlet; The freshness preservation device further includes an oxygen delivery pipe, and the internal structure of the oxygen delivery pipe forms the oxygen delivery channel. The oxygen delivery pipe includes a first pipe and a second pipe. One end of the first pipe is connected to the oxygen supply source and the other end is connected to the first storage box. At least part of the second pipe is arranged inside the first pipe. The pipe wall of the second pipe faces the pipe wall of the first pipe, and a flow-through gap communicated with the first storage cavity is formed at an interval. The second pipe is connected to the housing and communicated with the air inlet. During the oxygen delivery process, the oxygen located outside the second pipe enters the first storage cavity through the flow-through gap, and the oxygen entering the second pipe enters the first storage cavity after being ionized by the ionization module.

2. The freshness preservation device according to claim 1, wherein The ionization module includes a power supply, an excitation electrode and a receiving electrode. The excitation electrode and the receiving electrode are arranged at an interval. 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.

3. The freshness preservation device according to claim 2, characterized in that, The excitation electrode and the receiving electrode are arranged along the oxygen output direction, and the receiving electrode is located on the side of the excitation electrode away from the oxygen supply source.

4. The freshness preservation device according to claim 3, characterized in that, The excitation electrode includes a needle electrode extending along the oxygen output direction; Wherein, the receiving electrode includes a bottom plate and a convex tube. The convex tube is connected to the side of the bottom plate facing the excitation electrode. The bottom plate is provided with a first air outlet communicated with the convex tube. The needle electrode is inserted into the convex tube and is arranged at an interval from the tube wall of the convex tube; Or, the receiving electrode includes a bottom plate, at least part of the bottom plate bulges towards the side away from the needle electrode, and the bottom plate is provided with a second air outlet, and one end of the needle electrode faces the second air outlet.

5. The freshness preservation device according to claim 2, characterized in that, The receiving electrode is configured as a cylinder surrounding the excitation electrode, and the excitation electrode is arranged inside the receiving electrode.

6. The freshness preservation device according to claim 5, characterized in that, The excitation electrode includes a connecting rod and a plurality of needle electrodes connected to the connecting rod. Each needle electrode extends along the radial direction of the connecting rod. The receiving electrode is configured as a cylinder surrounding the axial direction of the connecting rod. The receiving electrode is provided with a plurality of third air outlets, and one end of each needle electrode faces one of the third air outlets.

7. The freshness preservation device according to claim 2, wherein, The freshness preservation device further includes a humidity sensor for detecting the humidity value in the first storage cavity. The power supply includes a control circuit 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 an increase in the humidity value in the first storage cavity, the control circuit adjusts the potential difference between the excitation electrode and the receiving electrode to decrease.

8. The freshness preservation device according to any one of claims 1 to 7, characterized in that, The oxygen supply source is an oxygen generation module, and the fresh-keeping device includes the oxygen generation module; The fresh-keeping device further includes a gas detector for detecting the oxygen concentration value in the first storage cavity. The oxygen generation module is configured to: start oxygen generation when the oxygen concentration value is less than a preset concentration value; stop oxygen generation when the oxygen concentration value is greater than or equal to the preset concentration value.

9. Refrigeration equipment, characterized in that, It includes the fresh-keeping device according to any one of claims 1 to 8.

10. Control method for a refrigeration device, characterized in that, The refrigeration device includes a first storage box, an oxygen generation module and an ionization module. The oxygen generation module is communicated with the first storage box. The oxygen generation module is used to provide oxygen for the first storage box, and the ionization module is used to ionize and purify the inside of the first storage box; it further includes an oxygen delivery pipe. The oxygen delivery pipe includes a first pipe and a second pipe. One end of the first pipe is connected to the oxygen generation module, and the other end is connected to the first storage box. At least part of the second pipe is arranged inside the first pipe. The pipe wall of the second pipe is opposite to the pipe wall of the first pipe, and a flow-through gap communicated with the first storage box is formed at an interval. The second pipe is connected to the ionization module and communicated with the air inlet of the ionization module; during the oxygen delivery process, the oxygen outside the second pipe enters the first storage box through the flow-through gap, and the oxygen entering the second pipe enters the first storage box after being ionized by the ionization module; The control method includes: Controlling the oxygen generation module and the ionization module to start; Obtaining a first signal and controlling the oxygen generation module and the ionization module to close. The first signal indicates that the oxygen concentration value in the first storage box is greater than or equal to a preset concentration value.

11. The control method of the refrigeration device according to claim 10, characterized in that, The controlling the ionization module to start includes: Controlling the ionization module to execute a first working mode, and the voltage in the first working mode is a first voltage; Controlling the ionization module to execute a second working mode, and the voltage in the second working mode is a second voltage, and the second voltage is less than the first voltage.

12. The control method of the refrigeration device according to claim 11, characterized in that, The controlling the ionization module to execute the second working mode includes: Obtaining a second signal and controlling the ionization module to switch from the first working mode to the second working mode. The second signal indicates that the working duration of the ionization module reaches a first duration, or the air humidity value in the first storage box is greater than or equal to a preset humidity value.

13. The control method of the refrigeration device according to claim 10, characterized in that, Before controlling the oxygen generation module and the ionization module to start, it further includes: Obtaining a third signal, and the third signal indicates that the oxygen concentration value in the first storage box is less than the preset concentration value.

14. Control method of refrigeration equipment, characterized in that, The refrigeration device includes a first storage box, an oxygen generation module and an ionization module. The oxygen generation module is communicated with the first storage box. The oxygen generation module is used to provide oxygen for the first storage box. The ionization module is used to ionize and purify the inside of the first storage box. It further includes an oxygen delivery pipe. The oxygen delivery pipe includes a first pipe and a second pipe. One end of the first pipe is connected to the oxygen generation module, and the other end is connected to the first storage box. At least a part of the second pipe is arranged inside the first pipe. The pipe wall of the second pipe faces the pipe wall of the first pipe, and an over-flow gap communicated with the first storage box is formed at an interval. The second pipe is connected to the ionization module and communicated with the air inlet of the ionization module. During the oxygen delivery process, the oxygen outside the second pipe enters the first storage box through the over-flow gap, and the oxygen entering the second pipe enters the first storage box after being ionized by the ionization module. The control method includes: Controlling the oxygen generation module and the ionization module to start, and controlling the ionization module to close after a first duration; Obtaining a first signal and controlling the oxygen generation module to close, where the first signal indicates that the oxygen concentration value in the first storage box is greater than or equal to a preset concentration value.

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