Sterilizing and fresh-keeping equipment and household appliance
By spraying plasma activated water with atomization technology in the sterilization and preservation equipment, the damage to heat-sensitive fruits and vegetables and the generation of wastewater is solved, and the efficient sterilization and preservation of fruits and vegetables is achieved and the environmental protection and economic benefits of fruits and vegetables are improved.
Patent Information
- Application Number
- CN202421951841.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-12
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-08-12
AI Technical Summary
When soaking fruits and vegetables with plasma activated water, it is easy to cause damage to heat-sensitive fruits and vegetables, and produce a large amount of wastewater, and some fruits and vegetables cannot be soaked in water.
A sterilization and fresh preservation equipment is designed, and atomization technology is used to spray plasma activated water evenly on the surface of fruits and vegetables to avoid direct soaking. Combined with plasma gas generation components and activated water generation components, the sterilization and fresh preservation effect is achieved.
Through atomization technology, the activated water is evenly distributed on the surface of fruits and vegetables, avoiding damage to heat-sensitive fruits and vegetables, saving water, reducing wastewater production, achieving bactericidal and freshness of fruits and vegetables, and improving shelf life and freshness.
Smart Images
Figure CN222997334U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sterilization and preservation equipment, in particular to a sterilization and preservation equipment and household appliances. Background Art
[0002] Plasma refers to a gas that is partially or completely ionized, and it is generally considered the fourth state of matter. The plasma generated under normal temperature conditions is called low-temperature plasma, and there are many ways to generate plasma, including direct current corona discharge, alternating current dielectric barrier discharge, etc.
[0003] In the related art, the low-temperature plasma technology has become a new emerging fruit and vegetable preservation technology with higher application potential compared with the traditional preservation technology. Plasma and plasma-activated water (i.e., introducing plasma into water to react to generate plasma-activated water) can improve the antioxidant capacity of fruits and vegetables, maintain the fresh taste of fruits and vegetables, and reduce the spoilage reaction of fruits and vegetables by removing dirt and microorganisms on the surface of fruits and vegetables, thereby effectively extending the preservation period of fruits and vegetables.
[0004] However, when soaking fruits and vegetables with plasma-activated water, it is easy to damage heat-sensitive fruits and vegetables. Using plasma-activated water to soak and process fruits and vegetables is also easy to generate a large amount of waste water. In addition, some fruits and vegetables also have the problem that they cannot be soaked in water. Summary of the Utility Model
[0005] In view of the above problems, a sterilization and preservation equipment and household appliances are provided to overcome the above problems or at least partially solve the above problems, including:
[0006] A sterilization and preservation equipment, the sterilization and preservation equipment at least includes a fruit and vegetable storage component and a plasma-activated water spraying component; wherein, the fruit and vegetable storage component includes:
[0007] A fruit and vegetable storage cavity;
[0008] The plasma-activated water spraying component includes:
[0009] A plasma-activated water rising pipe;
[0010] A plasma-activated water atomizing device, the water inlet end of the plasma-activated water atomizing device is connected to the water outlet end of the plasma-activated water rising pipe;
[0011] A plasma-activated water atomizing nozzle, the water inlet end of the plasma-activated water atomizing nozzle is connected to the water outlet end of the plasma-activated water atomizing device, and the water outlet end of the plasma-activated water atomizing nozzle is arranged at the top of the fruit and vegetable storage cavity.
[0012] Optionally, the fruit and vegetable storage component further includes:
[0013] A device door, which is rotatably connected to the fruit and vegetable storage cavity;
[0014] A drain pipe, which is connected to the bottom of the fruit and vegetable storage cavity.
[0015] Optionally, the sterilization and preservation device further includes a plasma gas generation component and a plasma-activated water generation component; wherein, the plasma gas generation component includes:
[0016] A plasma gas storage cavity;
[0017] A plasma generator, which is symmetrically arranged at the top and bottom of the plasma gas storage cavity;
[0018] The plasma-activated water generation component includes:
[0019] An activated water generator, the intake end of which is connected to the outlet end of the plasma gas storage cavity, and the outlet end of which is connected to the inlet end of the plasma-activated water riser pipe;
[0020] An outlet pipe, the intake end of which is connected to the outlet end of the activated water generator and the outlet end of which is connected to the inlet end of the plasma gas storage cavity.
[0021] Optionally, the plasma gas generation component further includes:
[0022] An air pump, the intake end of which is connected to the outlet end of the plasma gas storage cavity and the outlet end of which is connected to the inlet end of the activated water generator.
[0023] Optionally, the plasma-activated water generation component further includes:
[0024] A water pump, the intake end of which is connected to the outlet end of the activated water generator and the outlet end of which is connected to the inlet end of the plasma-activated water riser pipe.
[0025] Optionally, the plasma-activated water generation component further includes:
[0026] A tap water inlet control valve, which is connected to the inlet end of the activated water generator.
[0027] Optionally, the outlet pipe includes:
[0028] A metal mesh hole, which is arranged on the side of the outlet pipe close to the activated water generator.
[0029] Optionally, the plasma generator includes:
[0030] A discharge module, which at least includes a metal high-voltage electrode, a dielectric layer, a grounding electrode, and heat dissipation fins.
[0031] Optionally, the sterilization and preservation device further includes a fan, and the fan is arranged on one side of the sterilization and preservation device close to the plasma gas generation component.
[0032] Optionally, the fruit and vegetable storage component further includes:
[0033] A drain port, and the drain port is connected to one end of the drain pipe close to the fruit and vegetable storage cavity.
[0034] Optionally, the sterilization and preservation device further includes a fan air inlet, and the fan air inlet is arranged on the outer surface of the sterilization and preservation device close to the fan side.
[0035] Optionally, the number of the fans is two.
[0036] An appliance, which includes the sterilization and preservation device as described above.
[0037] The embodiment of the present utility model has the following advantages:
[0038] The present utility model provides a sterilization and preservation device, which at least includes a fruit and vegetable storage component (1) and a plasma-activated water spraying component (2); wherein, the fruit and vegetable storage component (1) includes a fruit and vegetable storage cavity (11); the plasma-activated water spraying component (2) includes a plasma-activated water rising pipe (21); a plasma-activated water atomizing device (22), the water inlet end of the plasma-activated water atomizing device (22) is connected to the water outlet end of the plasma-activated water rising pipe (21); a plasma-activated water atomizing nozzle (23), the water inlet end of the plasma-activated water atomizing nozzle (23) is connected to the water outlet end of the plasma-activated water atomizing device (22) and the water outlet end of the plasma-activated water atomizing nozzle (23) is arranged at the top of the fruit and vegetable storage cavity (11). According to the sterilization and preservation device provided by the present utility model, it realizes that the activated water is evenly distributed on the surface of fruits and vegetables in the form of extremely fine water droplets by using the atomization technology, without directly soaking the fruits and vegetables, avoiding damage to heat-sensitive fruits and vegetables; it not only ensures the sterilization and preservation effect, but also avoids excessive consumption of energy and resources, realizing the dual improvement of the environmental protection and economic benefits of the fruit and vegetable preservation technology. Description of the Drawings
[0039] To more clearly illustrate the technical solution of the present utility model, the following will briefly introduce the drawings required for the description of the present utility model. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0040] Figure 1 It is a schematic diagram of the overall structure of a sterilization and preservation device provided by some embodiments of the present utility model;
[0041] Figure 2 It is a schematic diagram of the structure of a plasma-activated water spraying assembly provided by some embodiments of the present utility model;
[0042] Figure 3 It is a left-sectional view of a sterilization and preservation device provided by some embodiments of the present utility model;
[0043] Figure 4 It is a schematic diagram of the structure of a plasma generator provided by some embodiments of the present utility model;
[0044] Figure 5 It is a flowchart of the steps of a sterilization and preservation method based on a sterilization and preservation device provided by some embodiments;
[0045] Figure 6 It is an operation structure diagram of a sterilization and preservation device provided by some embodiments of the present utility model;
[0046] Figure 7 It is a flowchart of the operation of a sterilization and preservation device provided by some embodiments of the present utility model;
[0047] Figure 8 It is a schematic diagram of the structure of a sterilization and preservation device based on a sterilization and preservation device provided by some embodiments of the present utility model. Detailed implementation manners
[0048] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following further details the present utility model in conjunction with the drawings and specific implementation manners. Obviously, the described embodiments are some embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.
[0049] In the embodiments of the present application, terms such as "first" and "second" are used to distinguish the same items or similar items with basically the same functions and roles, only for clearly describing the technical solutions of the embodiments of the present application, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features.
[0050] In the embodiments of the present application, the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.
[0051] Plasma is a gas that is partially or completely ionized. It is generally considered the fourth state of matter. Plasma generated under normal temperature conditions is generally called low-temperature plasma. There are many ways to generate plasma, including direct current corona discharge, alternating current dielectric barrier discharge, etc. Usually, the dielectric barrier discharge method is more commonly used in the field of sterilization and preservation (generally, a non-metallic dielectric layer is added between two metal electrode plates (one metal electrode plate is connected to high voltage and the other metal electrode plate is grounded)). Dielectric barrier discharge is further divided into surface dielectric barrier discharge (SDBD, Surface Dielectric Barrier Discharge) and volume dielectric barrier discharge
[0052] (VDBD, Volume Dielectric Barrier Discharge). Generally speaking, when the above two metal electrode plates and the non-metallic dielectric layer are parallel and attached together, it is SDBD, and when they are separated, it is VDBD. The plasma generating device involved in the following of the present application can be SDBD.
[0053] In the related art, the low-temperature plasma technology has become a new emerging fruit and vegetable preservation technology with higher application potential compared to traditional preservation technologies. Plasma and plasma-activated water (i.e., plasma-activated water generated by introducing plasma into water for reaction) can improve the antioxidant capacity of fruits and vegetables, maintain the fresh taste of fruits and vegetables, and reduce the spoilage reaction of fruits and vegetables by removing dirt and microorganisms on the surface of fruits and vegetables, thereby effectively extending the preservation period of fruits and vegetables.
[0054] However, when soaking fruits and vegetables in plasma-activated water, it is easy to cause damage to heat-sensitive fruits and vegetables (since plasma is generated by discharging, plasma has a very high temperature, and direct treatment may cause burns on the surface of the fruit peel). Using plasma-activated water to soak and treat fruits and vegetables is also prone to generating a large amount of wastewater. In addition, some fruits and vegetables also have the problem that they cannot be soaked in water.
[0055] To solve the above problems, the present utility model improves the sterilization and preservation equipment in the related art based on the application of an atomization device. The following will describe the present utility model in detail with reference to the drawings:
[0056] Refer to Figure 1, showing a schematic diagram of the overall structure of a sterilization and preservation device provided by some embodiments of the present invention. The sterilization and preservation device at least includes a fruit and vegetable storage component 1 and a plasma-activated water spraying component 2; wherein, the fruit and vegetable storage component 1 includes:
[0057] A fruit and vegetable storage cavity 11;
[0058] The plasma-activated water spraying component 2 includes:
[0059] A plasma-activated water rising pipe 21;
[0060] A plasma-activated water atomizing device 22, the water inlet end of the plasma-activated water atomizing device 22 is connected to the water outlet end of the plasma-activated water rising pipe 21;
[0061] A plasma-activated water atomizing nozzle 23, the water inlet end of the plasma-activated water atomizing nozzle 23 is connected to the water outlet end of the plasma-activated water atomizing device 22 and the water outlet end of the plasma-activated water atomizing nozzle 23 is arranged at the top of the fruit and vegetable storage cavity 11.
[0062] In a specific implementation, the processed plasma-activated water can be transported to the plasma-activated water spraying component 2 at the top of the device through the water pump 43 in Figure 1 . As shown in Figure 2 , the plasma-activated water spraying component 2 may include a group of parallelly arranged plasma-activated water atomizing nozzles 23 and a plasma-activated water atomizing device 22;
[0063] Furthermore, as shown in Figure 3 is a left-sectional view of the sterilization and preservation device provided by the present invention. Combining Figure 1 and Figure 3 , it can be seen that the structure of the plasma-activated water atomizing device 22 is similar to the Chinese character "tu", that is, it is composed of a main pipe connected to the plasma-activated water rising pipe 21 and several branch pipes 25 connected to the main pipe 24, Figure 3Each plasma activated water atomizing nozzle 23 is connected to a branch pipe 25 perpendicular to the paper surface by default. The number of plasma activated water atomizing nozzles 23 can be set according to actual needs to ensure that the sprayed water mist can cover the entire cavity. The related plasma activated water atomizing nozzles 23 can be designed and installed in parallel at different positions of the branch pipes 25. The fruit and vegetable storage cavity 11 is directly below the plasma activated water atomizing nozzle 23. The atomized activated water sprayed from the upper part will gradually disperse on the surface of the fruits and vegetables. After these atomized water droplets form water droplets on the surface of the fruits and vegetables, they can form a water film and flow away at the end. They can stay on the surface of the fruits and vegetables for a long time without water storage, which can play a very good sterilization and preservation effect, avoiding the problem that some fruits and vegetables cannot be soaked, and the atomized water droplets can also play a good moisturizing effect, thereby improving the freshness of the fruits and vegetables.
[0064] Furthermore, when the excess water droplets on the surface of fruits and vegetables leave the surface of fruits and vegetables, they can flow out along the drainage port 14 at the bottom of the fruit and vegetable storage chamber 11, and finally gather and discharge through the drainage pipe 13. Due to the use of the atomized spraying method, water can be fully saved and a large amount of wastewater can be avoided. In addition, the atomized spraying of activated water can be carried out multiple times, which can improve the sterilization effect while ensuring the humidity of the fruit and vegetable storage chamber 11 and maintaining the freshness of fruits and vegetables.
[0065] In some embodiments of the present invention, the fruit and vegetable storage assembly 1 further includes:
[0066] An equipment door 12, wherein the equipment door 12 is rotatably connected to the fruit and vegetable storage chamber 11;
[0067] A drainage pipe 13 is connected to the bottom of the fruit and vegetable storage cavity 11 .
[0068] In practical applications, a drainage pipe 13 connected to the bottom of the fruit and vegetable storage chamber 11 can be provided, so that after the excess water droplets on the surface of the fruit and vegetable leave the surface of the fruit and vegetable, they can flow out along the drainage port 14 at the bottom of the fruit and vegetable storage chamber 11, and finally gather through the drainage pipe 13 to be discharged from the sterilization and preservation device. Figure 3 As shown, a device door 12 can be rotatably connected to the fruit and vegetable storage chamber 11 as a fruit and vegetable entrance to achieve storage and retrieval of fruits and vegetables. Specifically, the device door 12 can be connected to the fruit and vegetable storage chamber 11 by setting a corresponding device door rotation axis 15.
[0069] In some embodiments of the present invention, the fruit and vegetable storage assembly 1 further includes:
[0070] A drainage port 14 is connected to one end of the drainage pipe 13 close to the fruit and vegetable storage cavity 11 .
[0071] In a specific implementation, a drain port 14 can be provided at one end of the drain pipe 13 close to the fruit and vegetable storage cavity 11. Thus, after the excess water droplets on the surface of the fruits and vegetables leave the surface of the fruits and vegetables, they can flow out along the drain port 14 at the bottom of the fruit and vegetable storage cavity 11, and finally gather and be discharged from the sterilization and preservation device through the drain pipe 13.
[0072] In some embodiments of the present utility model, the sterilization and preservation device further includes a plasma gas generation component 3 and a plasma-activated water generation component 4; wherein, the plasma gas generation component 3 includes:
[0073] A plasma gas storage cavity 31;
[0074] A plasma generator 32, and the plasma generator 32 is symmetrically arranged at the top and bottom of the plasma gas storage cavity 31;
[0075] The plasma-activated water generation component 4 includes:
[0076] An activated water generator 41, the intake end of the activated water generator 41 is connected to the outlet end of the plasma gas storage cavity 31, and the outlet end of the activated water generator 41 is connected to the intake end of the plasma-activated water rising pipe 21;
[0077] An air outlet pipe 42, the intake end of the air outlet pipe 42 is connected to the outlet end of the activated water generator 41 and the outlet end of the air outlet pipe 42 is connected to the intake end of the plasma gas storage cavity 31.
[0078] In practical applications, the sterilization and preservation device may further include a plasma gas generation component 3 and a plasma-activated water generation component 4. The plasma gas generation component 3 may include a plasma gas storage cavity 31 and a plasma generator 32, and the plasma generator 32 may be symmetrically arranged at the top and bottom of the plasma gas storage cavity 31
[0079] Such as Figure 4 shown is a structural schematic diagram of the plasma generator 32. The plasma generator 32 provided by the present utility model may adopt a surface dielectric barrier discharge device. Figure 4 In the figure, the dashed box marks a discharge module 34 in the plasma generator 32. The discharge module 34 may sequentially include a metal high-voltage electrode 35, a dielectric layer 36, a ground electrode 37, and a heat dissipation fin 38 from bottom to top. Such as Figure 4As shown, in order to enhance the production of active substances per unit time, the plasma generator 32 can be symmetrically arranged at the top and bottom of the plasma gas storage chamber 31 (the operating voltage range of the discharge module 34 can be 15 - 20 kV, the discharge frequency can be 10 kHz, the discharge time range can be 5 - 15 min, and the water treatment volume range can be 500 mL - 1500 mL). Here, air will be gradually ionized under the action of the metal high-voltage electrode 35 to form a gas containing molecules, atoms, electrons, and ions. Since this gas is externally electrically neutral, it is called plasma. The gaseous molecules that play a major bactericidal role include reactive oxygen species (ROS) (atomic oxygen O, singlet oxygen 1 O2, superoxide anion O 2- and ozone O3); reactive nitrogen species (RNS) (atomic nitrogen N, excited nitrogen N2, nitric oxide NO).
[0080] Furthermore, since heat is generated during discharge and equipment operation, to ensure the safe operation of the equipment, enhanced heat transfer can be achieved by setting a fan air inlet 51 and a fan 5 at relevant positions of the plasma gas generation assembly 3, as Figure 1 shown in the lower left corner. The fan air inlet 51 can be set on the outer surface of the sterilization and preservation equipment on the side close to the fan 5.
[0081] Furthermore, the plasma gas generated in the plasma gas storage chamber 31 can enter the plasma-activated water generation assembly 4 through the suction of the air pump 33 in Figure 1 . The plasma-activated water generation assembly 4 can include an activated water generator 41 and an air outlet pipe 42. The air inlet end of the activated water generator 41 can be connected to the air outlet end of the plasma gas storage chamber 31, the water outlet end of the activated water generator 41 can be connected to the water inlet end of the plasma-activated water riser 21, the air inlet end of the air outlet pipe 42 can be connected to the air outlet end of the activated water generator 41, and the air outlet end of the air outlet pipe 42 can be connected to the air inlet end of the plasma gas storage chamber 31; among them, the water inlet end of the plasma-activated water generation assembly can be controlled by the tap water inlet control valve 44 in Figure 1 . After the plasma gas generated by the plasma gas generation assembly 3 enters the activated water generator 41 through the air outlet of the air pump 33 in Figure 1 , it will react fully with water to generate plasma-activated water with a bactericidal effect, and the plasma-activated water can be transported to the plasma-activated water riser 21 through the water pump 43 to deliver the plasma-activated water to the plasma-activated water spraying assembly 2. The main reaction products include H2O2, O 3 , NO 2- , NO - , ONOO - , OH, and these products interact with each other to jointly form the bactericidal system of the plasma-activated water.
[0082] Further, as shown by Figure 1 structures such as the plasma gas storage chamber 31, the air pump 33, the activated water generator 41, and the air outlet pipe 42 can jointly achieve the internal circulation of the plasma gas, thereby avoiding the leakage of the plasma gas and affecting human health; and can enhance the solubility of the plasma gas in water and improve the sterilization and preservation effect of the activated water.
[0083] Further, as shown in Figure 1 Since the gas will entrain water vapor after emerging from the water, in order to avoid the water vapor affecting the discharge of the plasma generator 32, several layers of staggered metal mesh holes 45 can be designed on the side of the air outlet pipe 42 close to the activated water generator 41, so that the moist air condenses into water droplets on the metal mesh, achieving the purpose of blocking the water vapor.
[0084] In some embodiments of the present invention, the plasma gas generation assembly 3 further includes:
[0085] An air pump 33, the intake end of the air pump 33 is connected to the outlet end of the plasma gas storage chamber 31 and the outlet end of the air pump 33 is connected to the intake end of the activated water generator 41.
[0086] In a specific implementation, the intake end of the air pump 33 can be set to be connected to the outlet end of the plasma gas storage chamber 31 and the outlet end of the air pump 33 is connected to the intake end of the activated water generator 41, so that the plasma gas generated in the plasma gas storage chamber 31 can pass through Figure 1 the suction of the air pump 33 in
[0087] In some embodiments of the present invention, the plasma activated water generation assembly 4 further includes:
[0088] A water pump 43, the intake end of the water pump 43 is connected to the outlet end of the activated water generator 41 and the outlet end of the water pump 43 is connected to the intake end of the plasma activated water rising pipe 21.
[0089] In practical applications, the intake end of the water pump 43 can be set to be connected to the outlet end of the activated water generator 41 and the outlet end of the water pump 43 is connected to the intake end of the plasma activated water rising pipe 21, so that the plasma activated water can be transported to the plasma activated water rising pipe 21 through the water pump 43 to supply the plasma activated water to the plasma activated water spraying assembly 2.
[0090] In some embodiments of the present invention, the plasma activated water generation assembly 4 further includes:
[0091] The tap water inlet control valve 44 is connected to the water inlet end of the activated water generator 41.
[0092] In a specific implementation, the tap water inlet control valve 44 can be set to be connected to the water inlet end of the activated water generator 41, so that Figure 1 the tap water inlet control valve 44 can control the water inlet end of the plasma-activated water generation assembly.
[0093] In some embodiments of the present invention, the air outlet pipe 42 includes:
[0094] A metal mesh hole 45, and the metal mesh hole 45 is arranged on the side of the air outlet pipe 42 close to the activated water generator 41.
[0095] In practical applications, as Figure 1 shown, since water vapor will be entrained when the gas emerges from the water, in order to prevent the water vapor from affecting the discharge of the plasma generator 32, several layers of staggered metal mesh holes 45 can be designed on the side of the air outlet pipe 42 close to the activated water generator 41, so that the humid air condenses into water droplets on the metal mesh, achieving the purpose of blocking the water vapor.
[0096] In some embodiments of the present invention, the plasma generator 32 includes:
[0097] A discharge module 34, and the discharge module 34 at least includes a metal high-voltage electrode 35, a dielectric layer 36, a grounding electrode 37, and a heat dissipation fin 38.
[0098] In practical applications, as Figure 4 shown is the structural schematic diagram of the plasma generator 32. The plasma generator 32 provided by the present invention can adopt a surface dielectric barrier discharge device. Figure 4 In the figure, the dotted line box marks a discharge module 34 in the plasma generator 32. The discharge module 34 can be successively a metal high-voltage electrode 35, a dielectric layer 36, a grounding electrode 37, and a heat dissipation fin 38 from bottom to top. As Figure 4 shown, in order to enhance the yield of active substances per unit time, the plasma generator 32 can be symmetrically arranged at the top and bottom of the plasma gas storage cavity 31 (the working voltage range of the discharge module 34 can be 15 - 20 kV, the discharge frequency can be 10 kHz, the discharge time range can be 5 - 15 min, and the treated water volume range can be 500 mL - 1500 mL). Here, the air will be gradually ionized under the action of the metal high-voltage electrode 35 to form a gas containing molecules, atoms, electrons, and ions. Since this gas is externally electrically neutral, it is called plasma. The gaseous molecules that play a major role in sterilization include reactive oxygen species (ROS) (atomic oxygen O, singlet oxygen 1 O2, superoxide anion O2- and ozone O3); reactive nitrogen species (RNS) (atomic nitrogen N, excited nitrogen N2, nitric oxide NO).
[0099] In some embodiments of the present utility model, the sterilization and freshness preservation device further includes a fan 5, and the fan 5 is disposed on a side of the sterilization and freshness preservation device close to the plasma gas generation assembly 3.
[0100] In specific implementation, since heat is generated during discharge and device operation, to ensure the safe operation of the device, enhanced heat transfer can be achieved by providing a fan air inlet 51 and a fan 5 at relevant positions of the plasma gas generation assembly 3, as Figure 1 shown in the lower left corner. The fan 5 can be disposed on a side of the sterilization and freshness preservation device close to the plasma gas generation assembly 3, and the fan air inlet 51 can be disposed on the outer surface of the sterilization and freshness preservation device on a side close to the fan 5.
[0101] In some embodiments of the present utility model, the sterilization and freshness preservation device further includes a fan air inlet 51, and the fan air inlet 51 is disposed on the outer surface of the sterilization and freshness preservation device on a side close to the fan 5.
[0102] In specific implementation, since heat is generated during discharge and device operation, to ensure the safe operation of the device, enhanced heat transfer can be achieved by providing a fan air inlet 51 and a fan 5 at relevant positions of the plasma gas generation assembly 3, as Figure 1 shown in the lower left corner. The fan 5 can be disposed on a side of the sterilization and freshness preservation device close to the plasma gas generation assembly 3, and the fan air inlet 51 can be disposed on the outer surface of the sterilization and freshness preservation device on a side close to the fan 5.
[0103] In some embodiments of the present utility model, the number of the fans 5 is two.
[0104] In practical applications, the number of the fans 5 can be set to two, so as to further maintain the temperature balance of the device and avoid device damage caused by overheating.
[0105] In related technologies, the low-temperature plasma technology has become a new emerging fruit and vegetable freshness preservation technology with higher application potential compared to traditional freshness preservation technologies. Plasma and plasma-activated water (i.e., plasma-activated water generated by introducing plasma into water for reaction) can improve the antioxidant capacity of fruits and vegetables, maintain the fresh taste of fruits and vegetables, and reduce the spoilage reaction of fruits and vegetables by removing dirt and microorganisms on the surface of fruits and vegetables, thereby effectively extending the freshness preservation period of fruits and vegetables.
[0106] However, when fruits and vegetables are soaked in plasma-activated water, it is easy to damage heat-sensitive fruits and vegetables (since plasma is generated by discharging, so plasma has a very high temperature, and direct treatment may cause burning on the surface of the fruit peel). Using plasma-activated water to soak and treat fruits and vegetables is also likely to generate a large amount of wastewater. In addition, there is also a problem that some fruits and vegetables cannot be soaked in water.
[0107] In view of the above problems, the present invention provides a sterilization and preservation device, which at least includes a fruit and vegetable storage component 1 and a plasma-activated water spraying component 2; wherein, the fruit and vegetable storage component 1 includes a fruit and vegetable storage cavity 11; the plasma-activated water spraying component 2 includes a plasma-activated water rising pipe 21; a plasma-activated water atomizing device 22, the water inlet end of the plasma-activated water atomizing device 22 is connected to the water outlet end of the plasma-activated water rising pipe 21; a plasma-activated water atomizing nozzle 23, the water inlet end of the plasma-activated water atomizing nozzle 23 is connected to the water outlet end of the plasma-activated water atomizing device 22 and the water outlet end of the plasma-activated water atomizing nozzle 23 is arranged at the top of the fruit and vegetable storage cavity 11. According to the sterilization and preservation device provided by the present invention, it is realized that the activated water is uniformly distributed on the surface of fruits and vegetables in the form of extremely fine water droplets by using the atomization technology, without directly soaking the fruits and vegetables, avoiding damage to heat-sensitive fruits and vegetables; not only ensuring the sterilization and preservation effect, but also avoiding excessive consumption of energy and resources, realizing the dual improvement of the environmental protection and economic benefits of the fruit and vegetable preservation technology.
[0108] Refer to Figure 5 , which shows a step flow chart of a sterilization and preservation method based on a sterilization and preservation device provided by some embodiments of the present invention. The sterilization and preservation device at least includes a fruit and vegetable storage component 1 and a plasma-activated water spraying component 2; wherein, the fruit and vegetable storage component 1 includes a fruit and vegetable storage cavity 11; the plasma-activated water spraying component 2 includes a plasma-activated water rising pipe 21; a plasma-activated water atomizing device 22, the water inlet end of the plasma-activated water atomizing device 22 is connected to the water outlet end of the plasma-activated water rising pipe 21; a plasma-activated water atomizing nozzle 23, the water inlet end of the plasma-activated water atomizing nozzle 23 is connected to the water outlet end of the plasma-activated water atomizing device 22 and the water outlet end of the plasma-activated water atomizing nozzle 23 is arranged at the top of the fruit and vegetable storage cavity 11; specifically, it may include the following steps:
[0109] Step 501, in response to the operation of putting fruits and vegetables into the fruit and vegetable storage cavity 11, obtain the fruit and vegetable type information and fruit and vegetable state information corresponding to the fruits and vegetables put into the fruit and vegetable storage cavity 11;
[0110] In practical applications, the processed plasma-activated water can be transported to the plasma-activated water spraying component 2 at the top of the device through the Figure 1 water pump 43 in, such asFigure 2 As shown, the plasma-activated water spraying assembly 2 may include a group of plasma-activated water atomizing nozzles 23 arranged in parallel and a plasma-activated water atomizing device 22;
[0111] Furthermore, as Figure 3 shown in the left side sectional view of the sterilization and fresh-keeping device provided by the present utility model, in combination with Figure 1 and Figure 3 it can be known that the structure of the plasma-activated water atomizing device 22 is similar to the Chinese character "tu", that is, it is composed of a main pipe connected to the plasma-activated water rising pipe 21 and several branch pipes 25 connected to the main pipe 24. Figure 3 Each of the plasma-activated water atomizing nozzles 23 in is defaultly connected to the branch pipe 25 perpendicular to the paper surface. The number of the plasma-activated water atomizing nozzles 23 can be set according to actual needs, as long as the sprayed water mist range can cover the entire cavity. The plasma-activated water atomizing nozzles 23 can be designed and installed in parallel at different positions of the branch pipe 25. Right below the plasma-activated water atomizing nozzle 23 is the fruit and vegetable storage cavity 11. The atomized activated water sprayed from the upper part will gradually disperse on the surface of the fruits and vegetables. These atomized water droplets can form a water film on the surface of the fruits and vegetables and finally flow away. They can stay on the surface of the fruits and vegetables for a long time but there will be no water accumulation phenomenon, which can achieve a very good sterilization and fresh-keeping effect, avoid the problem that some fruits and vegetables cannot be soaked, and the atomized water droplets can also play a very good moisturizing effect, thereby improving the freshness of the fruits and vegetables.
[0112] Furthermore, when the excess water droplets on the surface of the fruits and vegetables leave the surface of the fruits and vegetables, they can flow out along the drain port 14 at the bottom of the fruit and vegetable storage cavity 11 and finally be discharged through the drain pipe 13. Since the atomized spraying method is adopted, water can be fully saved and a large amount of waste water can be avoided. And the atomized spraying of activated water can be carried out multiple times, which can improve the sterilization effect while ensuring the humidity of the fruit and vegetable storage cavity 11 and maintaining the freshness of the fruits and vegetables.
[0113] Therefore, in specific implementation, in response to the operation of putting fruits and vegetables into the fruit and vegetable storage cavity 11, the fruit and vegetable type information and the fruit and vegetable status information corresponding to the fruits and vegetables put into the fruit and vegetable storage cavity 11 can be obtained. Specifically, as Figure 6As shown, after the user puts fruits and vegetables into the fruit and vegetable storage cavity 11, the user can select the corresponding fruit and vegetable type information and fruit and vegetable status information step by step through the control panel externally connected to the device. Among them, the fruit and vegetable type information can include fruits and vegetables with thin skins (such as grapes, strawberries); fruits and vegetables with thick skins (such as potatoes, bananas); fruits and vegetables without skins (such as waxberries, lettuce); and the fruit and vegetable status information can be the quality information of the fruits and vegetables. Thus, the changes in the complexity of sterilization caused by the above information can be comprehensively considered in subsequent steps, and further optimize the preparation voltage U, preparation time T, and preparation water volume L of the activated water during use.
[0114] Step 502, according to the fruit and vegetable type information and the fruit and vegetable status information, control the plasma-activated water spraying assembly 2 to perform sterilization and preservation treatment on the fruits and vegetables placed in the fruit and vegetable storage cavity 11;
[0115] In practical applications, as Figure 7 shown, first, the water volume L to be prepared can be determined according to the fruit and vegetable quality information, and then according to the fruit and vegetable type information, which can include fruits and vegetables wrapped in complete fruit skins (such as bananas, durians, etc.), fruits and vegetables without fruit skins or with thin skins (such as strawberries, grapes, etc.), and fresh-cut fruits and vegetables (various fruit platters), determine the activation water preparation voltage U and time T (usually, the higher the voltage, the longer the preparation time, and the better the effect of the activation water). Generally, it is considered that the activation water preparation voltage required for fruits and vegetables with thick skins, such as common watermelons, bananas, lettuce, etc., > the activation water preparation voltage required for fruits and vegetables with thin skins, such as grapes, strawberries, lettuce, etc., > the activation water preparation voltage required for fresh-cut fruits and vegetables such as fruit platters; the time can also be determined according to the quality, for example, it can be:
[0116] T1(M2)>T2(M0)>T3(M1);
[0117] L1(M2)>L2(M0)>L3(M1);
[0118] where M0, M1, and M2 are all the fruit and vegetable quality and M2>M0>M1, that is, both the activation water preparation time T and the activation water preparation water volume L are positively correlated with the fruit and vegetable quality M;
[0119] Furthermore, after determining the relevant parameters of the above fruit and vegetable type information and fruit and vegetable status information, the plasma-activated water can be generated according to the above parameters, and then control the plasma-activated water spraying assembly 2 to obtain the plasma-activated water, and control the plasma-activated water spraying assembly 2 to perform sterilization and preservation treatment on the fruits and vegetables placed in the fruit and vegetable storage cavity 11 according to the plasma-activated water.
[0120] In some embodiments of the present utility model, the sterilization and preservation device further includes a plasma gas generation assembly 3 and a plasma-activated water generation assembly 4; wherein, the plasma gas generation assembly 3 includes a plasma gas storage chamber 31; a plasma generator 32, the plasma generator 32 is symmetrically arranged at the top and bottom of the plasma gas storage chamber 31; the plasma-activated water generation assembly 4 includes an activated water generator 41, the air inlet end of the activated water generator 41 is connected to the air outlet end of the plasma gas storage chamber 31, and the water outlet end of the activated water generator 41 is connected to the water inlet end of the plasma-activated water riser pipe 21; an air outlet pipe 42, the air inlet end of the air outlet pipe 42 is connected to the air outlet end of the activated water generator 41 and the air outlet end of the air outlet pipe 42 is connected to the air inlet end of the plasma gas storage chamber 31; according to the fruit and vegetable type information and the fruit and vegetable status information, controlling the plasma-activated water spraying assembly 2 to perform sterilization and preservation treatment on the fruits and vegetables placed in the fruit and vegetable storage chamber 11, including:
[0121] According to the fruit and vegetable type information and the fruit and vegetable status information, determine the activation water preparation voltage parameter, the activation water preparation time parameter, and the activation water preparation water volume parameter;
[0122] According to the activation water preparation voltage parameter, the activation water preparation time parameter, and the activation water preparation water volume parameter; control the plasma-activated water generation assembly 4 to prepare plasma-activated water;
[0123] Control the plasma-activated water spraying assembly 2 to obtain the plasma-activated water, and control the plasma-activated water spraying assembly 2 to perform sterilization and preservation treatment on the fruits and vegetables placed in the fruit and vegetable storage chamber 11 according to the plasma-activated water.
[0124] In a specific implementation, the sterilization and preservation device may further include a plasma gas generation assembly 3 and a plasma-activated water generation assembly 4. The plasma gas generation assembly 3 may include a plasma gas storage chamber 31 and a plasma generator 32. The plasma generator 32 may be symmetrically arranged at the top and bottom of the plasma gas storage chamber 31
[0125] Such as Figure 4 Shown is a schematic structural diagram of the plasma generator 32. The plasma generator 32 provided by the present utility model may adopt a surface dielectric barrier discharge device, Figure 4 In the figure, the dashed box marks a discharge module 34 in the plasma generator 32. The discharge module 34 may sequentially include a metal high-voltage electrode 35, a dielectric layer 36, a grounding electrode 37, and a heat dissipation fin 38 from bottom to top, as Figure 4As shown in the figure, in order to enhance the production of active substances per unit time, the plasma generator 32 can be symmetrically arranged at the top and bottom of the plasma gas storage chamber 31 (the working voltage setting range of the discharge module 34 can be 15 - 20 kV, the discharge frequency can be 10 kHz, the discharge time range can be 5 - 15 min, and the water treatment volume range can be 500 mL - 1500 mL). Here, air will be gradually ionized under the action of the metal high-voltage electrode 35 to form a gas containing molecules, atoms, electrons, and ions. Since this gas is externally electrically neutral, it is called plasma. The gaseous molecules that play a major role in sterilization include reactive oxygen species (ROS) (atomic oxygen O, singlet oxygen 1 O2, superoxide anion O 2- and ozone O3); reactive nitrogen species (RNS) (atomic nitrogen N, excited nitrogen N2, nitric oxide NO).
[0126] Furthermore, the plasma gas generated in the plasma gas storage chamber 31 can enter the plasma-activated water generation component 4 through the suction of the air pump 33 in Figure 1 . The plasma-activated water generation component 4 can include an activated water generator 41 and an air outlet pipe 42. The air inlet end of the activated water generator 41 can be connected to the air outlet end of the plasma gas storage chamber 31, the water outlet end of the activated water generator 41 can be connected to the water inlet end of the plasma-activated water rising pipe 21, the air inlet end of the air outlet pipe 42 can be connected to the air outlet end of the activated water generator 41, and the air outlet end of the air outlet pipe 42 can be connected to the air inlet end of the plasma gas storage chamber 31; among them, the water inlet end of the plasma-activated water generation component can be controlled by the tap water inlet control valve 44 in Figure 1 . After the plasma gas generated by the plasma gas generation component 3 enters the activated water generator 41 through the air outlet of the air pump 33 in Figure 1 , it will react fully with water to generate plasma-activated water with a sterilization effect, and the plasma-activated water can be transported to the plasma-activated water rising pipe 21 by the water pump 43 to deliver the plasma-activated water to the plasma-activated water spraying component 2. The main reaction products include H2O2, O 3 , NO 2- , NO - , ONOO - , OH. These products interact with each other to jointly constitute the sterilization system of the plasma-activated water.
[0127] Therefore, in practical applications, first, the amount of water L to be prepared can be determined based on the quality information of fruits and vegetables. Then, according to the type information of fruits and vegetables, which can include fruits and vegetables covered with intact peels (such as bananas, durians, etc.), fruits and vegetables without peels or with thin peels (such as strawberries, grapes, etc.), and fresh-cut fruits and vegetables (various fruit platters), the activation water preparation voltage U and time T can be determined. Generally, the higher the voltage, the longer the preparation time, and the better the activation water effect. Generally, it is considered that the activation water preparation voltage required for thick-skinned fruits and vegetables, such as common thick-skinned fruits and vegetables like watermelons, bananas, and lettuces, > the activation water preparation voltage required for thin-skinned fruits and vegetables like grapes, strawberries, and lettuces > the activation water preparation voltage required for fresh-cut fruits and vegetables such as fruit platters; the time can also be determined according to the quality. For example, it can be:
[0128] T1(M2)>T2(M0)>T3(M1);
[0129] L1(M2)>L2(M0)>L3(M1);
[0130] where M0, M1, and M2 are all the masses of fruits and vegetables, and M2 > M0 > M1. That is, both the activation water preparation time T and the activation water preparation amount L are positively correlated with the mass M of fruits and vegetables;
[0131] Furthermore, after determining the relevant parameters of the above-mentioned fruit and vegetable type information and fruit and vegetable status information, the plasma activation water generation component 4 can be controlled to prepare plasma activation water according to the above parameters. Then, the plasma activation water spraying component 2 can be controlled to obtain the plasma activation water, and the plasma activation water spraying component 2 can be controlled to perform sterilization and preservation treatment on the fruits and vegetables placed in the fruit and vegetable storage chamber 11 according to the plasma activation water. For example, it can be atomized and sprayed multiple times according to the actual preparation amount of plasma activation water, which can improve the sterilization effect while ensuring the humidity of the fruit and vegetable storage chamber 11 and maintaining the freshness of fruits and vegetables.
[0132] It should be noted that for the method embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the embodiments of the present invention are not limited by the described action sequences, because according to the embodiments of the present invention, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions involved are not necessarily essential for the embodiments of the present invention.
[0133] Refer to Figure 8, showing a schematic structural diagram of a sterilization and preservation device based on a sterilization and preservation equipment provided by some embodiments of the present invention. The sterilization and preservation equipment at least includes a fruit and vegetable storage component 1 and a plasma-activated water spraying component 2. Among them, the fruit and vegetable storage component 1 includes a fruit and vegetable storage cavity 11. The plasma-activated water spraying component 2 includes a plasma-activated water rising pipe 21, a plasma-activated water atomizing device 22, the water inlet end of the plasma-activated water atomizing device 22 is connected to the water outlet end of the plasma-activated water rising pipe 21, and a plasma-activated water atomizing nozzle 23, the water inlet end of the plasma-activated water atomizing nozzle 23 is connected to the water outlet end of the plasma-activated water atomizing device 22 and the water outlet end of the plasma-activated water atomizing nozzle 23 is arranged at the top of the fruit and vegetable storage cavity 11. Specifically, it may include the following modules:
[0134] An information acquisition module 801, configured to obtain the fruit and vegetable type information and the fruit and vegetable status information corresponding to the fruits and vegetables placed in the fruit and vegetable storage cavity 11 in response to the operation of placing fruits and vegetables in the fruit and vegetable storage cavity 11.
[0135] A sterilization and preservation processing module 802, configured to control the plasma-activated water spraying component 2 to perform sterilization and preservation processing on the fruits and vegetables placed in the fruit and vegetable storage cavity 11 according to the fruit and vegetable type information and the fruit and vegetable status information.
[0136] In some embodiments of the present invention, the sterilization and preservation equipment further includes a plasma gas generation component 3 and a plasma-activated water generation component 4. Among them, the plasma gas generation component 3 includes a plasma gas storage cavity 31 and a plasma generator 32, the plasma generator 32 is symmetrically arranged at the top and bottom of the plasma gas storage cavity 31. The plasma-activated water generation component 4 includes an activated water generator 41, the air inlet end of the activated water generator 41 is connected to the air outlet end of the plasma gas storage cavity 31, the water outlet end of the activated water generator 41 is connected to the water inlet end of the plasma-activated water rising pipe 21, and an air outlet pipe 42, the air inlet end of the air outlet pipe 42 is connected to the air outlet end of the activated water generator 41 and the air outlet end of the air outlet pipe 42 is connected to the air inlet end of the plasma gas storage cavity 31. The sterilization and preservation processing module 802 includes:
[0137] A parameter determination sub-module, configured to determine an activated water preparation voltage parameter, an activated water preparation time parameter, and an activated water preparation water volume parameter according to the fruit and vegetable type information and the fruit and vegetable status information.
[0138] An activated water preparation sub-module, configured to control the plasma-activated water generation component 4 to prepare plasma-activated water according to the activated water preparation voltage parameter, the activated water preparation time parameter, and the activated water preparation water volume parameter.
[0139] A sterilization and preservation processing sub-module, configured to control the plasma-activated water spraying assembly 2 to obtain the plasma-activated water, and control the plasma-activated water spraying assembly 2 to perform sterilization and preservation processing on fruits and vegetables placed in the fruit and vegetable storage cavity 11 according to the plasma-activated water.
[0140] Some embodiments of the present invention further provide an electronic device, which may include a processor, a memory, and a computer program stored on the memory and capable of running on the processor. When the computer program is executed by the processor, the sterilization and preservation method based on the sterilization and preservation device as described above is implemented.
[0141] Some embodiments of the present invention further provide a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by the processor, the sterilization and preservation method based on the sterilization and preservation device as described above is implemented.
[0142] Some embodiments of the present invention further provide a computer program product, including a computer program. When the computer program is executed by the processor, the sterilization and preservation method based on the sterilization and preservation device as described above is implemented.
[0143] For the device embodiments, since they are basically similar to the method embodiments, the description is relatively simple. For the relevant parts, refer to the partial description of the method embodiments.
[0144] Each embodiment in this specification is described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the embodiments, refer to each other.
[0145] Those skilled in the art should understand that the embodiments of the present invention can be provided as a method, a device, or a computer program product. Therefore, the embodiments of the present invention can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the embodiments of the present invention can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.
[0146] Embodiments of the present utility model are described with reference to the flowcharts and / or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the present utility model. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing terminal devices to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing terminal devices generate a device for implementing the functions specified in one process Figure 1 one process or multiple processes and / or blocks Figure 1 or multiple blocks.
[0147] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal device to work in a specific manner, such that the instructions stored in the computer-readable memory generate a manufactured article including an instruction device that implements the functions specified in one process Figure 1 one process or multiple processes and / or blocks Figure 1 or multiple blocks.
[0148] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device, such that a series of operation steps are executed on the computer or other programmable terminal device to generate a computer-implemented process, so that the instructions executed on the computer or other programmable terminal device provide steps for implementing the functions specified in one process Figure 1 one process or multiple processes and / or blocks Figure 1 or multiple blocks.
[0149] Although the preferred embodiments of the embodiments of the present utility model have been described, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be construed as including the preferred embodiments as well as all changes and modifications that fall within the scope of the embodiments of the present utility model.
[0150] Finally, it should also be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or terminal device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or terminal device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or terminal device comprising the above elements.
[0151] The above provides a detailed introduction to a sterilization and preservation device and household appliance. In this text, specific examples are used to illustrate the principle and implementation of the present utility model. The description of the above embodiments is only for helping to understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be construed as a limitation on the present utility model.
Claims
1. A sterilization and preservation device, characterized in that: The sterilization and fresh-keeping equipment comprises at least a fruit and vegetable storage component (1) and a plasma activated water spraying component (2); wherein the fruit and vegetable storage component (1) comprises: Fruit and vegetable storage cavity (11); The plasma activated water spraying assembly (2) comprises: Plasma activated water riser (21); A plasma activated water atomizing device (22), wherein a water inlet end of the plasma activated water atomizing device (22) is connected to a water outlet end of the plasma activated water rising pipe (21); A plasma activated water atomizing nozzle (23), wherein a water inlet end of the plasma activated water atomizing nozzle (23) is connected to a water outlet end of the plasma activated water atomizing device (22), and the water outlet end of the plasma activated water atomizing nozzle (23) is arranged at the top of the fruit and vegetable storage cavity (11).
2. The sterilization and fresh-keeping equipment according to claim 1, characterized in that: The fruit and vegetable storage assembly (1) further comprises: An equipment door (12), the equipment door (12) being rotatably connected to the fruit and vegetable storage chamber (11); A drainage pipe (13), wherein the drainage pipe (13) is connected to the bottom of the fruit and vegetable storage cavity (11).
3. The sterilization and fresh-keeping equipment according to claim 1, characterized in that: The sterilization and fresh-keeping equipment further comprises a plasma gas generating component (3) and a plasma activated water generating component (4); wherein the plasma gas generating component (3) comprises: A plasma gas storage chamber (31); A plasma generator (32), the plasma generator (32) being symmetrically arranged at the top and bottom of the plasma gas storage chamber (31); The plasma activated water generating component (4) comprises: An activated water generator (41), wherein the air inlet end of the activated water generator (41) is connected to the air outlet end of the plasma gas storage chamber (31), and the water outlet end of the activated water generator (41) is connected to the water inlet end of the plasma activated water riser (21); An air outlet pipe (42), the air inlet end of the air outlet pipe (42) is connected to the air outlet end of the activated water generator (41), and the air outlet end of the air outlet pipe (42) is connected to the air inlet end of the plasma gas storage chamber (31).
4. The sterilization and fresh-keeping equipment according to claim 3, characterized in that: The plasma gas generating assembly (3) further comprises: An air pump (33), wherein the air inlet end of the air pump (33) is connected to the air outlet end of the plasma gas storage chamber (31), and the air outlet end of the air pump (33) is connected to the air inlet end of the activated water generator (41).
5. The sterilization and fresh-keeping equipment according to claim 3, characterized in that: The plasma activated water generating component (4) further comprises: A water pump (43), wherein the water inlet end of the water pump (43) is connected to the water outlet end of the activated water generator (41), and the water outlet end of the water pump (43) is connected to the water inlet end of the plasma activated water riser (21).
6. The sterilization and fresh-keeping equipment according to claim 3, characterized in that: The plasma activated water generating component (4) further comprises: A tap water inlet control valve (44), wherein the tap water inlet control valve (44) is connected to the water inlet end of the activated water generator (41).
7. The sterilization and fresh-keeping equipment according to claim 3, characterized in that: The air outlet pipe (42) comprises: A metal mesh (45), wherein the metal mesh (45) is arranged on a side of the air outlet pipe (42) close to the activated water generator (41).
8. The sterilization and fresh-keeping equipment according to claim 3, characterized in that: The plasma generator (32) comprises: A discharge module (34), the discharge module (34) comprising at least a metal high-voltage electrode (35), a dielectric layer (36), a grounding electrode (37) and heat dissipation fins (38).
9. The sterilization and fresh-keeping equipment according to claim 3, characterized in that: The sterilization and fresh-keeping device further comprises a fan (5), and the fan (5) is arranged on a side of the sterilization and fresh-keeping device close to the plasma gas generating component (3).
10. The sterilization and fresh-keeping equipment according to claim 2, characterized in that: The fruit and vegetable storage assembly (1) further comprises: A drainage port (14), wherein the drainage port (14) is connected to one end of the drainage pipe (13) close to the fruit and vegetable storage cavity (11).
11. The sterilization and fresh-keeping equipment according to claim 9, characterized in that: The sterilization and fresh-keeping device further comprises a fan air inlet (51), and the fan air inlet (51) is arranged on the outer surface of the sterilization and fresh-keeping device on a side close to the fan (5).
12. The sterilization and fresh-keeping equipment according to claim 9, characterized in that: The number of the fans (5) is two.
13. A household appliance, characterized in that: The household appliance includes the sterilization and fresh-keeping device as described in any one of claims 1-12.