Fruit and vegetable cleaning machine

Abstract

The utility model provides a fruit and vegetable cleaning machine which comprises a cleaning machine body, a cleaning device and a control device. The working water tank is arranged in the containing cavity, and a light inlet is formed in the working water tank; the electrolytic cell is arranged in the containing cavity and communicates with the working water tank, the electrolytic cell comprises a cell body, an anode arranged in the cell body, a cathode arranged in the cell body and a porous solid electrolyte layer, and the porous solid electrolyte layer is arranged between the cathode and the anode; the ultraviolet lamp is arranged in the containing cavity and used for activating hydrogen peroxide in the working water tank through ultraviolet light. According to the fruit and vegetable cleaning machine, clean water is electrolyzed through the electrolytic cell, hydrogen peroxide can be produced while fruits and vegetables are cleaned, the hydrogen peroxide is activated through the ultraviolet lamp to produce hydroxyl radicals so as to kill bacteria and viruses and remove pesticide residues, meanwhile, the cell voltage of the electrolytic cell is reduced through the porous solid electrolyte layer, and the service life of the electrolytic cell is prolonged. The service life is prolonged, and the energy consumption is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to food cleaning technical field, concretely relates to a fruit and vegetable cleaning machine. BACKGROUND

[0002] At present, the fruit and vegetable cleaning machine on the market has the function of removing residual pesticide in fruit and vegetable and sterilizing. The core function of these fruit and vegetable cleaning machines is to generate oxidative conditions in situ to achieve the purpose of degrading pesticide and sterilizing, mainly including: ozone (O3), chlorine (Cl), ultraviolet (UV) or ultrasonic wave (US). However, due to the different functions of these fruit and vegetable cleaning machines, part of the residual pesticide and pathogenic microorganisms cannot be effectively removed. In addition, these fruit and vegetable cleaning machines also have some factors that may be harmful to the human body. For example, the fruit and vegetable cleaning machine based on ozone will produce strong carcinogenic inorganic disinfection by-products bromate in the process of cleaning fruit and vegetable, and the escaped ozone is harmful to the human body. The fruit and vegetable cleaning machine based on chlorine will react with the organic matter in the fruit and vegetable to produce organic disinfection by-products, such as trihalomethane, haloacetic acid, haloacetonitrile, haloacetaldehyde, halonitrosomethane, etc., all of which have certain carcinogenicity, and the escaped chlorine gas is also harmful to the human body. The ultraviolet process has limited degradation capacity for pesticide, and the sterilization effect is not thorough, and there is a risk of light recovery of bacteria. The ultrasonic wave has weak ability to remove pesticide and sterilize, and long time in the ultrasonic wave may cause dizziness, nausea, and even induce various diseases. SUMMARY

[0003] Therefore, the utility model provides a fruit and vegetable cleaning machine which can effectively remove pesticide, kill bacteria and viruses and improve service life.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme:

[0005] According to the fruit and vegetable cleaning machine of the utility model embodiment, the fruit and vegetable cleaning machine comprises a cleaning machine body, a working water tank, an electrolytic cell and an ultraviolet lamp. The cleaning machine body is internally provided with a containing chamber. The working water tank is arranged in the containing chamber and is used for containing cleaning water. The working water tank is provided with a light inlet. The electrolytic cell is arranged in the containing chamber and is communicated with the working water tank. The electrolytic cell comprises a cell body, an anode arranged in the cell body, a cathode arranged in the cell body and a porous solid electrolyte layer arranged between the cathode and the anode. The electrolytic cell is used for producing hydrogen peroxide. The ultraviolet lamp is arranged in the containing chamber and is aligned with the light inlet of the working water tank. The ultraviolet lamp is used for activating the hydrogen peroxide in the working water tank by ultraviolet light to generate hydroxyl radicals.

[0006] The utility model discloses a fruit and vegetable cleaning machine, through the working water tank to electrolytic cell and import clean water, by electrolytic cell in situ electric synthesis hydrogen peroxide, and through ultraviolet lamp, hydrogen peroxide is activated as hydroxyl radical. Therefore, can effectively remove residual pesticide, kill bacteria and virus. Meanwhile, the utility model discloses a porous solid electrolyte layer is arranged in electrolytic cell, has high ion conductivity, can rapidly transmit proton, reduces the tank voltage effectively while improving the production hydrogen peroxide efficiency, and further improves the service life.

[0007] In an embodiment of the utility model, the cathode comprises a cathode plate and a cathode diffusion layer arranged in sequence, the anode comprises an anode plate and an anode diffusion layer arranged in sequence, and the porous solid electrolyte layer is arranged between the cathode diffusion layer and the anode diffusion layer.

[0008] Arranging the porous solid electrolyte layer between the cathode diffusion layer and the anode diffusion layer can rapidly conduct the proton generated by the anode to the cathode, thereby effectively improving the reaction rate, reducing the tank voltage and improving the service life.

[0009] In an embodiment of the utility model, the fruit and vegetable cleaning machine further comprises an anion exchange membrane and a cation exchange membrane. The anion exchange membrane is connected with the cathode diffusion layer and the porous solid electrolyte layer respectively, and the cation exchange membrane is connected with the anode diffusion layer and the porous solid electrolyte layer respectively.

[0010] Arranging the anion exchange membrane and the cation exchange membrane can effectively improve the ion exchange speed, improve the accumulation of hydrogen peroxide and reduce the decomposition of hydrogen peroxide.

[0011] In an embodiment of the utility model, the fruit and vegetable cleaning machine further comprises a direct-current power supply. The direct-current power supply is connected with the cathode plate and the anode plate respectively and is used for electrolyzing the clean water entering the electrolytic cell from the working water tank to generate hydrogen peroxide.

[0012] Electrolyzing the clean water by the direct-current power supply to generate hydrogen peroxide does not need to add other chemicals, thereby improving the ease of use and reducing the production cost.

[0013] In an embodiment of the utility model, the output current range of the direct-current power supply is 0.001-10 amperes, and the output voltage range is 0.5-20 volts.

[0014] That is, the current and voltage of the direct-current power supply can be adjusted according to the required dose of hydrogen peroxide for cleaning, thereby effectively reducing the energy consumption.

[0015] In an embodiment of the utility model, the cathode further comprises an air inlet. The air inlet is communicated with the side of the cathode plate away from the cathode diffusion layer.

[0016] The air is delivered to the cathode through the air inlet, so that the protons generated by the anode can react with the air of the cathode to generate hydrogen peroxide.

[0017] In an embodiment of the present application, the working water tank comprises a first water inlet and a first water outlet, the porous solid electrolyte layer comprises a second water inlet and a second water outlet, the first water outlet and the second water inlet are communicated, and the second water outlet is communicated with the first water inlet.

[0018] That is, the cleaning water in the working water tank can flow out of the first water outlet, flow into the porous solid electrolyte layer from the second water inlet, and then flow into the first water inlet from the second water outlet after dissolving the hydrogen peroxide of the cathode in the porous solid electrolyte layer. Thus, the water flow required for the reaction is provided by the working water tank, and the cost is effectively reduced.

[0019] In an embodiment of the present application, the water pump has a flow rate of 0.1-1000 mL / min. Thus, the flow rate of the water pump can be adjusted according to the required dose of hydrogen peroxide for cleaning, and the water source consumption is effectively reduced.

[0020] In an embodiment of the present application, the fruit and vegetable cleaning machine further comprises a stirrer. The stirrer is arranged in the working water tank. Thus, the convection mass transfer of the cleaning water can be strengthened, and the generation efficiency of the hydroxyl radicals and the fruit and vegetable cleaning effect are improved.

[0021] The above technical solution of the present application has at least one of the following beneficial effects:

[0022] The fruit and vegetable cleaning machine of the present application can effectively remove residual pesticides, kill bacteria and viruses by introducing the cleaning water into the electrolytic cell through the working water tank, in-situ electrically synthesizing the hydrogen peroxide by the electrolytic cell, and activating the hydrogen peroxide into hydroxyl radicals by the ultraviolet lamp. Meanwhile, the present application arranges the porous solid electrolyte layer in the electrolytic cell, has high ion conductivity, can rapidly transfer protons, effectively reduces the cell voltage while improving the production efficiency of hydrogen peroxide, and improves the service life of the device. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 FIG. 1 is a structural schematic view of the fruit and vegetable cleaning machine of an embodiment of the present application;

[0024] Figure 2 FIG. 2 is a structural schematic view of the electrolytic cell of the fruit and vegetable cleaning machine of an embodiment of the present application;

[0025] Figure 3The time-removal rate broken line graph of the fruit and vegetable cleaning machine and other cleaning processes for removing atrazine;

[0026] Figure 4 The time-logarithmic killing amount broken line graph of the fruit and vegetable cleaning machine and other cleaning processes for killing Escherichia coli;

[0027] Figure 5 The logarithmic concentration column chart of the Escherichia coli light recovery after cleaning of the fruit and vegetable cleaning machine and other cleaning processes.

[0028] The drawings show that the utility model discloses a fruit and vegetable cleaning machine, including the cleaning machine body 100, the working water tank 200, the first water outlet 201, the first water inlet 202, the electrolytic cell 300, the cathode 310, the cathode plate 311, the cathode diffusion layer 312, the anode 320, the anode plate 321, the anode diffusion layer 322, the porous solid electrolyte layer 330, the second water inlet 331, the second water outlet 332, the air inlet 340, the ultraviolet lamp 400, the direct current power supply 500, the water pump 600. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the utility model embodiment more clear, the following will combine the drawings of the utility model embodiment, and the technical scheme of the utility model embodiment is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by the person skilled in the art belong to the scope of the utility model protection.

[0030] Unless otherwise defined, the technical terms or scientific terms used in the utility model should be understood as the usual meaning of the person skilled in the art in the field to which the utility model belongs. The "first", "second" and similar words used in the utility model do not represent any order, quantity or importance, but are only used to distinguish different components. Similarly, "one" or "a" and similar words do not represent quantity limitation, but represent the existence of at least one. "Connection" or "connection" and similar words are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent relative positional relationship, when the absolute position of the described object changes, the relative positional relationship also changes accordingly.

[0031] Currently manufactured fruit and vegetable washing machines primarily use methods such as ozone (O3), chlorine (Cl), ultraviolet (UV), or ultrasound (US) to remove residual pesticides and kill bacteria and viruses. However, these methods all have certain drawbacks. In contrast, hydroxyl radicals (·OH) are an ideal fruit and vegetable cleaning agent. Hydroxyl radicals have extremely strong oxidizing properties, with a redox potential as high as 2.80V, which can efficiently oxidize and remove pesticides and effectively kill bacteria and viruses. Moreover, hydroxyl radicals do not produce disinfection byproducts during their action, thus avoiding secondary harm. Furthermore, hydroxyl radicals have a very short lifespan, generally less than 0.1 milliseconds in different media, and can migrate a maximum distance of no more than a few millimeters. After exceeding their lifespan, they will self-annihilate, thus posing no harmful risk to the human body. Hydroxyl radicals can be generated by activating hydrogen peroxide. Hydrogen peroxide is a recognized green chemical. Its decomposition products are water and oxygen, which are environmentally friendly and safe. In view of this, this utility model provides a fruit and vegetable washing machine that can effectively remove pesticides and kill bacteria and viruses while extending its service life.

[0032] The following is a detailed description of a fruit and vegetable washing machine according to an embodiment of the present invention, with reference to the accompanying drawings.

[0033] like Figure 1 As shown, the fruit and vegetable washing machine of this utility model embodiment includes: a washing machine body 100, a working water tank 200, an electrolytic cell 300, and an ultraviolet lamp 400. The washing machine body 100 has a receiving chamber; the working water tank 200 is disposed in the receiving chamber and is used to hold cleaning water, and has a light inlet; the electrolytic cell 300 is disposed in the receiving chamber and communicates with the working water tank 200, and includes: a tank body, an anode 320 disposed inside the tank body, a cathode 310 disposed inside the tank body, and a porous solid electrolyte layer 330 disposed between the cathode 310 and the anode 320; the electrolytic cell is used to produce hydrogen peroxide; the ultraviolet lamp 400 is disposed in the receiving chamber and aligned with the light inlet of the working water tank 200, and is used to activate the hydrogen peroxide in the working water tank 200 with ultraviolet light to generate hydroxyl radicals.

[0034] In one embodiment of this invention, clean water can be introduced into the electrolytic cell 300 through the working water tank 200, and hydrogen peroxide can be synthesized in situ in the electrolytic cell 300. Specifically, the protons generated by the electrolysis of clean water at the anode 320 in the electrolytic cell 300 can enter the porous solid electrolyte layer 330 and be conducted to the cathode 310, where they combine with oxygen on the surface of the cathode 310 to generate hydrogen peroxide. Then, the hydrogen peroxide generated in the electrolytic cell 300 can be introduced into the working water tank 200 along with the clean water, and the hydrogen peroxide in the working water tank 200 can be activated into hydroxyl radicals by the ultraviolet lamp 400. The method of activating hydrogen peroxide by the ultraviolet lamp 400 is as follows: Therefore, residual pesticides can be effectively removed, and bacteria and viruses can be killed. In some embodiments of this invention, ultrasonic waves can also be generated by setting up an ultrasonic generator or by heating with a heater to activate hydrogen peroxide to generate hydroxyl radicals; this is not a limitation.

[0035] Furthermore, in some existing embodiments, liquid electrolytes are generally used in conventional electrolyzers to transfer ions. However, liquid electrolytes have low proton conductivity and result in high cell voltages in conventional electrolyzers. High cell voltages lead to higher energy consumption and significantly reduce the lifespan of conventional electrolyzers. In contrast, the porous solid electrolyte layer 330 is filled with solid electrolyte particles, which possess high proton exchange capacity, enabling rapid proton transfer, improving current efficiency, and reducing energy consumption. Moreover, by incorporating a porous solid electrolyte layer 330 with high ion conductivity into the electrolyzer 300, protons can be rapidly transferred, improving hydrogen peroxide production efficiency while effectively reducing cell voltage and load, thereby extending lifespan.

[0036] like Figure 2 As shown, in one embodiment of the present invention, the cathode 310 includes a cathode plate 311 and a cathode diffusion layer 312 arranged in sequence, the anode 320 includes an anode plate 321 and an anode diffusion layer 322 arranged in sequence, and a porous solid electrolyte layer 330 is disposed between the cathode diffusion layer 312 and the anode diffusion layer 322.

[0037] In one embodiment of this utility model, after cleaning water is introduced into the electrolytic cell 300, electricity can be supplied to the electrolytic cell 300. At this time, the anode 320 will generate protons and oxygen through electrolysis of the cleaning water. The reaction process of the anode 320 is as follows: 2H2O-4e - →4H + +O2↑. Protons generated at anode 320 can rapidly diffuse through anode diffusion layer 322 into porous solid electrolyte layer 330, thereby increasing the reaction rate. Then, protons in porous solid electrolyte layer 330 are conducted to cathode 310, where they generate hydrogen peroxide through the reduction of oxygen. The reaction at cathode 310 is as follows: 2H₂ + +O2+2e - →H2O2. Furthermore, by placing the porous solid electrolyte layer 330 between the cathode diffusion layer 312 and the anode diffusion layer 322, the protons generated at the anode 320 can be rapidly conducted to the cathode 310, thereby effectively increasing the reaction rate, reducing the cell voltage, and extending the service life of the electrolytic cell.

[0038] In an embodiment of the utility model, the material of anode plate 321 can be inert metal such as titanium, nickel, platinum, gold, silver and tungsten, and the material of cathode plate 311 can be metal such as stainless steel, titanium, nickel, copper and aluminum. That is to say, both anode plate 321 and cathode plate 311 are metal materials, which can effectively support anode 320 and cathode 310. In addition, the material of anode diffusion layer 322 can be felt formed by inert metal such as titanium and nickel, and the material of cathode diffusion layer 312 can be stainless steel, carbon paper, carbon cloth, carbon felt and titanium felt. The felt has a large number of pores, which can realize uniform distribution of reactants and rapid extraction of products.

[0039] In an embodiment of the utility model, the fruit and vegetable cleaning machine further comprises an anion exchange membrane and a cation exchange membrane. The anion exchange membrane is connected with the cathode diffusion layer 312 and the porous solid electrolyte layer 330 respectively, and the cation exchange membrane is connected with the anode diffusion layer 322 and the porous solid electrolyte layer 330 respectively. By arranging the anion exchange membrane and the cation exchange membrane, the ion exchange speed can be effectively improved, the accumulation of hydrogen peroxide can be improved, and the decomposition of hydrogen peroxide can be reduced.

[0040] As shown in Figure 1 and Figure 2 In an embodiment of the utility model, the fruit and vegetable cleaning machine further comprises a direct current power supply 500. The direct current power supply 500 is connected with the cathode plate 311 and the anode plate 321 respectively, and is used for electrolyzing the cleaning water in the electrolytic tank 300 from the working water tank 200 to generate hydrogen peroxide. By electrolyzing the cleaning water with the direct current power supply 500 to generate hydrogen peroxide, only water and oxygen are needed as raw materials, without using other chemicals, which reduces the difficulty of preparing hydrogen peroxide, improves the ease of use, and reduces the production cost.

[0041] In an embodiment of the utility model, the output current range of the direct current power supply 500 is 0.001-10 amperes, and the output voltage range is 0.5-20 volts. That is to say, the current and voltage of the direct current power supply 500 can be adjusted according to the required dose of hydrogen peroxide when cleaning fruits and vegetables, thereby effectively improving the cleaning efficiency.

[0042] As shown in Figure 2 In an embodiment of the utility model, the cathode 310 further comprises an air inlet 340. The air inlet 340 is in communication with the side of the cathode plate 311 away from the cathode diffusion layer 312. By inhaling air through the air inlet 340, sufficient oxygen can be provided to the cathode 310, so that the protons generated by the anode 320 can react with the air of the cathode 310 to generate hydrogen peroxide.

[0043] As shown in Figure 1 and Figure 2As shown, in one embodiment of the present invention, the working water tank 200 includes a first inlet 202 and a first outlet 201, and the porous solid electrolyte layer 330 includes a second inlet 331 and a second outlet 332. The first outlet 201 and the second inlet 331 are connected, and the second outlet 332 is connected to the first inlet 202.

[0044] In other words, the clean water in the working water tank 200 can flow out from the first outlet 201 and into the porous solid electrolyte layer 330 from the second inlet 331. After dissolving the hydrogen peroxide generated by the cathode 310 in the porous solid electrolyte layer 330, it flows into the first inlet 202 from the second outlet 332. Firstly, by providing the water flow required for the reaction through the working water tank 200, costs are effectively reduced. Secondly, the clean water in the working water tank 200 can circulate, allowing for the simultaneous dissolution of hydrogen peroxide and washing of the fruits and vegetables within the working water tank 200.

[0045] In one embodiment of this invention, check valves (not shown) are respectively provided on the first outlet 201 and the first inlet 202. By providing check valves, a one-way channel for water flow from the working water tank to the electrolytic cell and a one-way channel for hydrogen peroxide solution from the electrolytic cell to the working water tank can be formed. This effectively ensures the concentration of hydrogen peroxide and improves cleaning efficiency.

[0046] like Figure 1 As shown, in one embodiment of this utility model, the fruit and vegetable washing machine further includes a water pump 600. The water pump 600 is connected to the first water outlet 201 and the second water inlet 331. Water can be pumped from the working water tank 200 to the electrolytic cell 300 through the water pump 600, realizing the circulation of hydrogen peroxide.

[0047] In one embodiment of this invention, the flow rate of the water pump 600 is 0.1-1000 mL / min. Therefore, the flow rate of the water pump 600 can be adjusted according to the required hydrogen peroxide dosage for cleaning, thereby effectively reducing water consumption.

[0048] In one embodiment of this utility model, the fruit and vegetable washing machine may further include a stirrer. The stirrer is disposed within the working water tank 200. Thus, by stirring the cleaning water in the working water tank 200, the convective mass transfer of the cleaning water can be enhanced, thereby improving the generation efficiency of hydroxyl radicals and the cleaning effect of fruits and vegetables.

[0049] Figure 3 This is a line graph showing the time-removal rate of the fruit and vegetable washing machine of this utility model compared to other washing processes for removing atrazine, such as... Figure 3As shown, E represents electrolytic cleaning, O3 represents ozone cleaning, UV represents ultraviolet cleaning, E-Cl represents electro-generated chlorine cleaning, E-H2O2 represents electro-generated hydrogen peroxide cleaning, UV / E-Cl represents ultraviolet-coupled electro-generated chlorine cleaning, and UV / E-H2O2 represents ultraviolet-coupled electro-generated hydrogen peroxide cleaning. Among these, ultraviolet-coupled electro-generated hydrogen peroxide cleaning is the method used in the fruit and vegetable cleaning machine of this embodiment. Figure 3 As shown, under the same time duration, the removal rate of atrazine by the ultraviolet-coupled electrogenerated hydrogen peroxide cleaning method of this utility model exhibits a linear increase, and the removal rate is only slightly lower than that of the ozone cleaning method at 10 minutes. However, the ozone cleaning method produces bromate, and the emitted ozone is harmful to the human body. In contrast, the ultraviolet-coupled electrogenerated hydrogen peroxide cleaning method of this utility model only produces short-lived hydroxyl radicals after hydrogen peroxide decomposition, making it green and safe, without producing toxic byproducts. It effectively removes pesticide residues while improving safety.

[0050] Figure 4 This is a line graph showing the time-to-concentration ratio for killing E. coli using the fruit and vegetable washing machine of this invention compared to other washing processes. Figure 5 This is a bar chart showing the logarithmic concentration of E. coli photoreactivation after cleaning with the fruit and vegetable washing machine of this invention and other cleaning processes, as shown in the example. Figure 4 As shown, under the same duration, the ultraviolet-coupled electrogenerated hydrogen peroxide cleaning method of this embodiment of the invention has the highest logarithmic killing effect on E. coli. In other words, the ultraviolet-coupled electrogenerated hydrogen peroxide cleaning method of this embodiment of the invention has a significantly higher inactivation efficiency against E. coli than other cleaning methods. Furthermore, as... Figure 5 As shown, among the three cleaning methods involving ultraviolet light, the photoreactivation concentration of E. coli in the ultraviolet-coupled electrogenerated hydrogen peroxide cleaning method of this embodiment is 0, which is significantly lower than the other cleaning methods. Clearly, the fruit and vegetable cleaning machine of this invention can effectively inactivate bacteria and viruses compared to other embodiments.

[0051] This invention relates to a fruit and vegetable washing machine. Clean water is introduced into an electrolytic cell 300 via a working water tank 200. Hydrogen peroxide is synthesized in situ within the electrolytic cell 300, and then activated into hydroxyl radicals by an ultraviolet lamp 400. This effectively removes residual pesticides and kills bacteria and viruses. Furthermore, the invention incorporates a porous solid electrolyte layer 330 within the electrolytic cell 300. This layer possesses high ionic conductivity, enabling rapid proton transfer and improving hydrogen peroxide production efficiency while effectively reducing cell voltage and extending the machine's lifespan.

[0052] The above is the preferred embodiment of the present application, it should be pointed out that, for those skilled in the art, without departing from the principles of the present application, under the premise that a number of improvements and refinements can be made, these improvements and refinements should also be considered as the scope of protection of the present application.

Claims

1. A fruit and vegetable washing machine, characterized in that, include: The cleaning machine body has a receiving chamber inside; A working water tank is disposed in the receiving chamber, and the working water tank is provided with a light inlet; An electrolytic cell is disposed in the receiving chamber and communicates with the working water tank. The electrolytic cell includes a tank body, an anode disposed inside the tank body, a cathode disposed inside the tank body, and a porous solid electrolyte layer disposed between the cathode and the anode. An ultraviolet lamp is disposed in the receiving chamber and aligned with the light inlet of the working water tank. The ultraviolet lamp is used to activate hydrogen peroxide in the working water tank by ultraviolet light to generate hydroxyl radicals.

2. The fruit and vegetable washing machine according to claim 1, characterized in that, The cathode comprises a cathode plate and a cathode diffusion layer arranged sequentially.

3. The fruit and vegetable washing machine according to claim 2, characterized in that, The anode includes an anode plate and an anode diffusion layer arranged in sequence, and the porous solid electrolyte layer is disposed between the cathode diffusion layer and the anode diffusion layer.

4. The fruit and vegetable washing machine according to claim 3, characterized in that, The electrolytic cell also includes: An anion exchange membrane, wherein the anion exchange membrane is connected to the cathode diffusion layer and the porous solid electrolyte layer, respectively; A cation exchange membrane is connected to both the anolyte diffusion layer and the porous solid electrolyte layer.

5. The fruit and vegetable washing machine according to claim 4, characterized in that, Also includes: A DC power supply is connected to both the cathode plate and the anode plate. The DC power supply is used to electrolyze clean water entering the electrolytic cell from the working water tank to generate hydrogen peroxide.

6. The fruit and vegetable washing machine according to claim 3, characterized in that, The cathode further includes: An air inlet is connected to the side of the cathode plate opposite to the cathode diffusion layer.

7. The fruit and vegetable washing machine according to claim 1, characterized in that, The working water tank includes a first inlet and a first outlet, and the porous solid electrolyte layer includes a second inlet and a second outlet. The first outlet and the second inlet are connected, and the second outlet is connected to the first inlet.

8. The fruit and vegetable washing machine according to claim 7, characterized in that, Check valves are respectively installed on the first water outlet and the first water inlet.

9. The fruit and vegetable washing machine according to claim 7, characterized in that, Also includes: A water pump, which is connected to the first outlet and the second inlet respectively.

10. The fruit and vegetable washing machine according to claim 1, characterized in that, Also includes: A stirrer is installed inside the working water tank.

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