refrigerator

Abstract

The present application proposes a refrigerator, which includes a cabinet, a cabinet door for opening or closing the cabinet, an image acquisition device for acquiring images for identifying whether a user adds or subtracts food into the cabinet, a door closing detection component for detecting the switch state of the cabinet, a cleaning device for removing bacteria in the cabinet, and a controller for controlling the actions of various components of the refrigerator. The cleaning device further includes a shell, a positive and negative ion generating unit, and a strong oxidizing ion generating unit. After receiving a door closing signal emitted by the door closing detection component, the image acquired by the image acquisition device is received and it is determined whether food is added to the food storage area based on the image. When food is added to the food storage area, it is determined that the type of bacteria newly introduced into the cabinet at this time is attached bacteria, and the strong oxidizing ion generating unit is turned on. When food is added or subtracted in the food storage area, it is determined that the type of bacteria newly introduced into the cabinet at this time is floating bacteria, and the positive and negative ion generating unit is turned on.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to a refrigerator. Background Art

[0002] Refrigerators are essential appliances in our daily lives. They prevent food from spoiling by lowering the temperature of the food storage space. However, even in a low-temperature environment, refrigerators can still breed harmful microorganisms, which not only reduces the freshness of food but also poses a hidden danger to food safety. Based on this, refrigerators need to be sterilized.

[0003] Traditional refrigerator sterilization technologies include photocatalytic sterilization, plasma sterilization, negative ion sterilization, ultraviolet sterilization, sampling sterilization, and silver ion sterilization lamps. However, at present, refrigerator sterilization technologies all utilize all installed sterilization components for sterilization, which is not targeted and cannot achieve accurate sterilization. It will cause energy waste, and too many strong oxidizing ions will also affect the quality of food.

[0004] In view of this, this application is filed. Summary of the invention

[0005] The present application provides a refrigerator, which uses an image acquisition device and a door closing detection component to determine whether the type of bacteria newly introduced into the refrigerator is floating bacteria or attached bacteria, and accordingly activates the operation of a positive and negative ion generating unit or a strong oxidizing ion generating unit to achieve targeted sterilization and improve the efficiency of sterilization.

[0006] To this end, the present application is intended to provide a refrigerator, comprising:

[0007] A box body, the box body having a front opening and a rear wall arranged opposite to each other;

[0008] A box door, which is arranged at the front opening and is used to open or close the box;

[0009] An image acquisition device is disposed inside the box, and is used to acquire images for identifying whether a user adds or subtracts food into the box;

[0010] A door closing detection component is provided on the box body and is used to detect the opening and closing state of the box body;

[0011] A cleaning device is disposed in the box body and is used to remove bacteria in the box body. The cleaning device further includes:

[0012] A housing, which is disposed in the box;

[0013] The positive and negative ion generating unit is arranged in the housing and is used to remove floating bacteria in the air in the housing by using the positive and negative ion groups generated by the unit;

[0014] A strong oxidizing ion generating unit is disposed in the housing and is used to remove bacteria attached to the inner wall of the housing and the surface of food materials by using the strong oxidizing ion group generated by the unit;

[0015] The refrigerator further includes a controller configured to, upon receiving a door closing signal sent by the door closing detection component, receive an image captured by the image acquisition device and determine whether food is added to the food storage area based on the image;

[0016] When food is added to the food storage area, it is determined that the newly introduced bacteria in the box are attached bacteria, and the strong oxidizing ion generating unit is turned on;

[0017] When no food is added or removed from the food storage area, it is determined that the newly introduced bacteria in the box are planktonic bacteria, and the positive and negative ion generating units are turned on.

[0018] In some embodiments of the present application, the housing further includes:

[0019] Air inlet;

[0020] Air outlet;

[0021] An internal air duct is arranged in the shell and is connected with the air inlet and the air outlet. The positive and negative ion generating units and the strong oxidation ion generating unit are installed in the internal air duct;

[0022] A built-in fan is arranged on one side of the internal air duct close to the air inlet, and is used to accelerate the air flow in the housing;

[0023] The controller is configured to, when receiving a strong sterilization signal, turn on the built-in fan to accelerate the air flow rate inside the shell, and after working for a period of time, turn off the built-in fan and the strong oxidation ion generating unit or the positive and negative ion generating unit in operation.

[0024] In some embodiments of the present application, the cleaning device further includes a high voltage power supply, which is used to emit a high voltage to at least discharge the strong oxidation ion generating unit and / or the positive and negative ion generating units to form ion groups.

[0025] In some embodiments of the present application, the strong oxidizing ion generating unit includes an emitting electrode structure, one side of the emitting electrode structure is set as a needle tip structure, the needle tip structure is set on the side of the built-in fan close to the air outlet, and the emitting electrode structure is used to use the high voltage power provided by the high voltage power supply to make the needle tip structure corona discharge to form a strong oxidizing ion group to remove the floating bacteria in the box;

[0026] The controller controls the concentration of the generated strong oxidizing ions using a discharge control rule so that the concentration of the strong oxidizing ions is below a set threshold value, and the set threshold value is set according to the user's perception level.

[0027] In some embodiments of the present application, the positive and negative ion generating unit includes:

[0028] A positive electrode, which is arranged on one side of the built-in fan close to the air outlet;

[0029] A negative electrode is arranged on one side of the built-in fan close to the air outlet, and the negative electrode and the positive electrode are arranged along the length direction of the shell;

[0030] The positive electrode and the negative electrode use the high voltage provided by the high voltage power supply to form positive ion groups and negative ion groups to remove attached bacteria in the box.

[0031] In some embodiments of the present application, the box body includes an inner liner forming a storage space and an outer shell connected to the outer side of the inner liner, and a main air duct is formed between the inner liner and the outer shell;

[0032] An odor detection device is provided in the main air duct and is used to detect the concentration of odor in the box so as to remove the odor;

[0033] A photocatalyst unit is disposed in the housing and horizontally placed in the internal air duct;

[0034] The controller is configured to, when the odor concentration detected by the odor detection device reaches a first preset concentration condition, turn on the built-in fan and the photocatalyst unit, and the airflow in the box passes through the surface of the photocatalyst unit under the action of the built-in fan to remove odor molecules in the airflow.

[0035] In some embodiments of the present application, the working time of the positive and negative ion generating units and the strong oxidizing ion generating unit is related to the type and quantity of the food and the opening time of the box.

[0036] In some embodiments of the present application, before starting the photocatalyst catalytic unit, the strong oxidizing ion generating unit, and the positive and negative ion generating unit, it is necessary to determine whether the time when the corresponding unit or device is in the shutdown state reaches the corresponding set shutdown time;

[0037] If the time in the shutdown state does not reach the corresponding set shutdown time, wait until the corresponding set shutdown time before restarting.

[0038] In some embodiments of the present application, during the operation of the strong oxidizing ion generating unit and / or the positive and negative ion generating unit and / or the photocatalyst catalysis unit, when it is detected that the door closing detection component sends a door opening signal, the strong oxidizing ion generating unit and / or the positive and negative ion generating unit and / or the photocatalyst catalysis unit stops working and the built-in fan is turned off.

[0039] In some embodiments of the present application, when a door opening signal is received from a door closing detection component, the door opening time of the refrigerator starts to be calculated. After receiving the door closing signal from the door closing detection component, when the door opening time of the refrigerator reaches a preset door opening time, the positive and negative ion generating units are turned on to remove floating bacteria in the cabinet.

[0040] In the above embodiment, the refrigerator includes a box body with a front opening and a rear wall arranged relatively to each other, a box door arranged at the front opening and used to open or close the box body, an image acquisition device arranged inside the box body, a door closing detection component arranged on the box body, a cleaning device arranged inside the box body, and a controller for controlling the actions of various components of the refrigerator, the image acquisition device is used to acquire images for identifying whether a user adds or subtracts food into the box body, the door closing detection component is used to detect the switch state of the box body, the cleaning device is used to remove bacteria in the box body, and the cleaning device further includes a shell arranged in the box body, a positive and negative ion generating unit arranged in the shell body, and a strong oxidizing ion generating unit, and the positive and negative ion generating unit are provided. The unit is used to remove floating bacteria in the air in the box by using the positive and negative ions generated by itself, and the strong oxidizing ion generating unit is used to remove attached bacteria on the inner wall and the surface of food in the box by using the strong oxidizing ions generated by itself. The controller is configured to, after receiving the door closing signal sent by the door closing detection component, receive the image captured by the image acquisition device and judge whether food storage area has been added. If food storage area has been added, it is judged that the newly introduced bacteria in the box are attached bacteria, and the strong oxidizing ion generating unit is turned on. If food storage area has been added or reduced, it is judged that the newly introduced bacteria in the box are floating bacteria, and the positive and negative ion generating units are turned on. The type of bacteria newly introduced in the box is judged according to the image captured by the image acquisition device, and the corresponding ion generating unit is turned on accordingly to generate the corresponding ion group, thereby achieving targeted sterilization and improving the efficiency of sterilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0042] Figure 1 is a schematic structural diagram of a refrigerator provided according to an exemplary embodiment;

[0043] Figure 2 A hardware configuration block diagram of a refrigerator according to an exemplary embodiment;

[0044] Figure 3 is a schematic structural diagram of a refrigerator cleaning device according to an exemplary embodiment;

[0045] Figure 4 An explosion of a cleaning device for a refrigerator according to an exemplary embodiment Figure 1 ;

[0046] Figure 5An explosion of a cleaning device for a refrigerator according to an exemplary embodiment Figure 2 ;

[0047] Figure 6 for Fig.14 The enlarged view of point A in the middle;

[0048] Figure 7 for Figure 5 The enlarged view of point B in the middle;

[0049] Figure 8 is a schematic structural diagram of a photocatalyst unit according to an exemplary embodiment;

[0050] Fig. 9 An exploded view of a photocatalyst unit according to an exemplary embodiment;

[0051] Fig.10 is an exploded view of another photocatalyst unit according to an exemplary embodiment;

[0052] Fig.11 is a hardware configuration block diagram of a controller according to an exemplary embodiment;

[0053] Fig.12 A control logic for deodorizing a refrigerator according to an exemplary embodiment;

[0054] Fig.13 A control logic for sterilization of a refrigerator according to an exemplary embodiment;

[0055] Fig.14 A partial schematic diagram of a cleaning device according to an exemplary embodiment;

[0056] Fig.15 The control logic of the refrigerator proposed according to the exemplary embodiment simultaneously determines whether to sterilize additional food in the cabinet when the door opening time reaches the preset door opening time;

[0057] Fig.16 Another control logic for determining whether to sterilize food in the refrigerator when the door opening time reaches the preset door opening time and when the refrigerator arrives according to the exemplary embodiment;

[0058] In the above figures:

[0059] Bus 81; Memory 82; Processor 83; Communication interface 84;

[0060] Refrigerating chamber 1; inner liner 12; outer shell 11; door 2; door inner liner 22; door outer shell 21;

[0061] Cleaning device 3; housing 31; air inlet 32; air outlet 33; built-in fan 34;

[0062] Internal air duct 35; odor detection device 4; image acquisition device 5; controller 6;

[0063] Ion generating device 36; positive and negative ion generating unit 361; strong oxidizing ion generating unit 362;

[0064] Photocatalyst unit 363; positive electrode 3611; negative electrode 3612;

[0065] Substrate plate 3631; first electrode plate 3632; second electrode plate 3633; photocatalyst layer 3634;

[0066] Cold catalyst catalytic unit 364; needle tip structure 3621; emitter electrode structure 3622;

[0067] Ambient temperature detection device 8; door closing detection component 9; duct fan 10. DETAILED DESCRIPTION

[0068] The present invention is described in detail below by way of exemplary embodiments. However, it should be understood that elements, structures, and features in one embodiment may also be beneficially combined in other embodiments without further description.

[0069] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0070] The terms "first", "second" are used only for descriptive purposes and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first", "second" may explicitly or implicitly include one or more of the features.

[0071] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0072] The present application provides a refrigerator, referring to Figure 1The refrigerator includes a box body, and a storage compartment is formed inside the box body. The storage compartment includes at least a refrigerating chamber 1 and a freezing chamber. In some embodiments, the storage compartment may also include a vacuum chamber and a variable temperature chamber to meet different storage needs of users.

[0073] The refrigerator of the present application also includes a door 2, which includes an inner liner 22 of the door 2 and an outer shell 21 of the door 2. The door 2 is used to open and close the storage space. The door 2 can be used to form a closed space for the cabinet to facilitate the sterilization and deodorization work inside the cabinet, prevent the introduction of new bacteria, and cause the air outside the cabinet to pollute the air inside the cabinet.

[0074] The cabinet includes an inner liner 12 defining a storage space, an outer shell 11 connected to the outer side of the inner liner 12 to form the appearance of a refrigerator, and an insulating layer provided between the inner liner 12 and the outer shell 11 to insulate the storage space.

[0075] A main air duct is formed between the inner tank 12 and the outer shell 11, and the main air duct is connected to the storage compartment inside the box. A refrigeration system is arranged in the main air duct, and cold air generated by the refrigeration system enters the box through the main air duct to cool the food in the box.

[0076] An air duct fan 10 is arranged in the main air duct to accelerate the air flow rate of the entire main air duct and the box, speed up heat exchange and further promote the efficiency of sterilization and deodorization.

[0077] In the present application, a refrigeration system for supplying cold air to a storage room includes a compressor, a condenser, an expansion valve, and an evaporator. The refrigerant circulates in the various components of the refrigeration system to achieve a refrigeration effect. The main flow process of the refrigerant in each component is: the refrigerant enters the condenser after passing through the compressor, enters the expansion valve after passing through the condenser, enters the evaporator after passing through the expansion valve, and flows back to the compressor after passing through the evaporator.

[0078] Specifically, the compressor compresses the refrigerant gas at high temperature and high pressure and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and the heat is released to the surrounding environment through the condensation process. The expansion valve expands the liquid phase refrigerant in the high temperature and high pressure state in the condenser into a low pressure liquid phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low temperature and low pressure state to the compressor. The evaporator can achieve a refrigeration effect by utilizing the latent heat of evaporation of the refrigerant or heat exchange with the material to be cooled.

[0079] Reference Figure 1 The box body includes a top and a bottom that are relatively arranged. The cleaning device 3 included in the refrigerator in the present application is arranged in the box body. Exemplarily, the cleaning device 3 can be arranged on the top of the box body.

[0080] It should be noted that the cleaning device 3 in the present application is used to sterilize and remove odors from the refrigerating chamber 1 .

[0081] Reference Figure 3-5 The cleaning device 3 further includes a housing 31, a built-in fan 34 and an ion generator 36 disposed in the housing 31, wherein the housing 31 is used to form the outer shape of the cleaning device 3, and an internal air duct 35 is formed therein, and an air inlet 32 ​​and an air outlet 33 are formed on both sides of the internal air duct 35, and the internal air duct 35 can be used for air flow and provide installation space for internal components. The air inlet 32, the internal air duct 35 and the air outlet 33 are connected so that the air in the box enters the internal air duct 35 and reacts with the ion group generated by the ion generator 36.

[0082] The built-in fan 34 is arranged in the internal air duct 35 and is located on the side close to the air inlet 32, which is used to accelerate the air flow in the box, accelerate the diffusion of ions and strong oxidizing active substances, improve the contact efficiency between the air and the ion group in the box, accelerate odor removal and sterilization, and improve odor removal efficiency.

[0083] The ion generating device 36 is installed in the internal air duct 35 and is located near the air outlet 33 of the built-in fan 34. The ion generating device 36 is used to generate an ion group for removing bacteria in the box. Generally speaking, the ion types in the ion group can include strong oxidizing ions, positive ions and negative ions, etc. For example, strong oxidizing ions include hydroxyl radicals (·OH), ozone (O3), atomic oxygen (O), ground state oxygen (O*), nitrogen oxides (NOx), and the types of bacteria in the box include planktonic bacteria in the air in the box, bacteria attached to the inner wall of the box, attached bacteria on food, etc.

[0084] The air in the box enters the internal air duct 35 through the air inlet 32, flows through the ion generator 36 under the action of the built-in fan 34, and flows back to the box through the air outlet 33 after contacting the ion group generated by it. In the process of contact between the air and the ion group, the ions can absorb and decompose the odor molecules and floating bacteria in the air, and at the same time, the ions will flow into the box with the air flow to remove the attached bacteria on the inner wall of the box or the surface of the food.

[0085] In some implementations of this embodiment, the cleaning device 3 further includes a high voltage power supply, which is used to provide a high voltage voltage to the ion generating device 36 so that it discharges to form an ion group, so as to be used for sterilizing the inside of the refrigerator. In this implementation, the generation of ion concentration can be controlled by controlling the discharge rule of the high voltage power supply.

[0086] In some implementations of this embodiment, the ion generating device 36 includes a strong oxidizing ion generating unit 362, which generates a large amount of strong oxidizing active substances and ions by using needle tip corona discharge. The strong oxidizing active substances include hydroxyl radicals (·OH), ozone (O3), atomic oxygen (O), ground state oxygen (O*), nitrogen oxides (NOx), etc., which diffuse to the inner wall of the refrigerator and the surface of food to effectively kill and remove attached bacteria. At the same time, the concentration of ozone (O3) can be controlled by applying a discharge control rule to control the ozone concentration below the user perception threshold. Exemplarily, the discharge control rule is the relationship between the applied voltage and the ozone concentration.

[0087] In some embodiments, the controller uses the discharge control rule to control the concentration of the generated strong oxidizing ions so that the concentration of the strong oxidizing ions is below a set threshold value, and the set threshold value is set according to the user's perception. Sterilization can be performed without the user's perception, which can effectively improve the user experience and prevent the excessive concentration of strong oxidizing ions from affecting the preservation of food in the box.

[0088] refer to Figure 6 The strong oxidizing ion generating unit 362 includes an emitting electrode structure 3622, one side of the emitting electrolytic plate is provided with a needle tip structure 3621, the needle tip structure 3621 is provided on the side of the built-in fan 34 close to the air outlet 33, and the emitting electrode structure 3622 is used to use the high voltage provided by the high voltage power supply to make the needle tip structure 3621 corona discharge to form a strong oxidizing ion group. Specifically, the needle tip structure 3621 is provided in plurality.

[0089] Specifically, the strong oxidizing ion generating unit 362 includes an emitting electrode structure 36223622 and a needle tip structure 3621, and the emitting electrode structure 36223622 further includes a counter electrode and a bracket, wherein the bracket is detachably fixed in the internal air duct 35. The counter electrode includes a high-voltage electrode and a collecting electrode, the high-voltage electrode is connected to a high voltage, and the collecting electrode is connected to a low voltage or grounded. The high-voltage electrode and the collecting electrode are fixed on the bracket at intervals.

[0090] A needle tip structure 3621 is convexly provided on one side of the high-voltage electrode facing the collecting electrode. In the counter electrode of the strong oxidizing ion generating unit 362, discharge is performed using the needle tip structure 3621. For example, the high-voltage electrode is connected to negative high voltage, and a large amount of negative ions are generated at the needle tip structure 3621. The generated negative ions come into contact with bacteria and dust in the air, thereby playing a role in sterilization and purification. Specifically, the counter electrode is grounded or the relative voltage of the counter electrode to the high-voltage electrode of the needle tip structure 3621 is 0, and the DC negative high voltage range of the two needle tip electrodes is -2.5 to -5 kV.

[0091] In some implementations of this embodiment, the ion generating device 36 further includes a positive and negative ion generating unit 361, through which the floating bacteria in the air in the refrigerator can be removed efficiently and quickly.

[0092] Reference Figure 7 The positive and negative ion generating unit 361 further includes a positive electrode 3611 and a negative electrode 3612 arranged on one side of the built-in fan 34 close to the air outlet 33. The positive electrode 3611 and the negative electrode 3612 are arranged along the length direction of the shell 31. The positive electrode 3611 and the negative electrode 3612 use the high voltage provided by the high voltage power supply to form positive ion groups and negative ion groups.

[0093] In some embodiments, the positive and negative ion generating unit 361 uses a carbon brush as a discharge electrode. Of course, the technical solution in the present application can be applied to other electrodes, for example, a needle-shaped discharge electrode. The DC negative high voltage range of the negative high voltage carbon brush electrode is: -2 to -9 kV, and the DC positive high voltage range of the positive high voltage carbon brush electrode is: 2-9 kV. It should be noted that the positions of the positive high voltage electrode and the negative high voltage electrode are not limited in the figure, and the positions of the positive and negative high voltage electrodes can be interchanged.

[0094] In some embodiments of this embodiment, the ion generating device 36 also includes a photocatalyst catalytic unit 363, which is arranged on the side of the built-in fan 34 close to the air outlet 33. In this application, DBD (dielectric barrier) discharge is used to couple the photocatalyst to achieve low-temperature plasma discharge and coordinated photocatalyst / metal oxide catalyst catalytic function to achieve a fast and efficient deodorization effect.

[0095] In the technical solution of the present application, the main function of the photocatalyst catalytic unit 363 is to remove odor. The photocatalyst is excited by a high voltage electric field to generate electrons and holes. The electrons migrate from the valence band to the conduction band and react with O2. The reaction formula is:

[0096]

[0097] The valence band holes react with H2O in the air, and the reaction equation is:

[0098] h + +H2O→.OH

[0099] Both .OH have strong oxidizing properties. The air in the box is sucked in through the built-in fan 34, and the odor molecules in the air are oxidized and decomposed in the photocatalytic unit 363, which plays a strong and rapid odor removal role.

[0100] Reference Figure 8The photocatalyst unit 363 includes a substrate plate 3631, a photocatalyst layer 3634 wrapped on the outer surface of the substrate plate 3631, and a first electrode plate 3632 and a second electrode plate 3633 arranged opposite to each other and located on both sides of the substrate plate 3631. The first electrode plate 3632 and the second electrode plate 3633 are electrically connected to a high voltage power supply. The substrate plate 3631 is arranged on a side of the built-in fan 34 close to the air outlet 33. A plurality of through holes are provided on the substrate plate 3631 along the direction of the air flow, which increases the air flow rate while increasing the surface area of ​​the photocatalyst layer 3634, thereby improving the deodorization efficiency. The air in the box flows out from the air outlet 33 of the built-in fan 34 under the action of the built-in fan 34, and then flows back to the box through the air outlet 33 after passing through the photocatalyst layer 3634.

[0101] The photocatalyst catalytic unit 363 utilizes the high voltage electric field generated by the first electrode plate 3632 and the second electrode plate 3633 to excite the photocatalyst layer 3634 to generate strong oxidizing molecules to decompose the odor molecules in the box.

[0102] In some embodiments, the substrate plate 3631 is configured as a porous ceramic, and the photocatalyst is coated or impregnated on the surface of the porous ceramic to achieve the catalytic function of low-temperature plasma discharge synergistic with the photocatalyst / metal oxide catalyst. It should be noted that the photocatalyst here can be TiO2 doped with Cu or Mn oxide.

[0103] In some embodiments, reference Fig. 9 The first electrode plate 3632 and the second electrode plate 3633 are arranged on a plate-wire mesh electrode, which can effectively excite the photocatalyst occasionally and effectively reduce wind resistance. It should be noted that the two plate-wire electrodes can be interchanged.

[0104] Reference Fig.10 In the present application, the first electrode plate 3632 and the second electrode plate 3633 may also be set as plate-plate mesh opposing electrodes.

[0105] In some embodiments not shown in the present application, the first electrode plate 3632 and the second electrode plate 3633 may be arranged on the basis of the plate-line opposing electrodes, and plate electrodes or line electrodes may be arranged at upper and lower positions of the substrate plate 3631 .

[0106] In some embodiments not shown in the present application, the first electrode plate 3632 and the second electrode plate 3633 can also be arranged on the basis of the plate-plate opposing electrodes, and plate electrodes or line electrodes can be arranged at the upper and lower positions of the substrate plate 3631.

[0107] The discharge parameters in this embodiment are: the voltages of the two electrodes are two positive and negative high voltages of the same frequency and amplitude of the cosine pulse with opposite phases, the peak value range of the positive cosine high voltage is 1.5 to 2.8 kV, and the corresponding peak value range of the negative cosine high voltage is -1.5 to -2.8 kV. It should be noted that the spacing between the two electrodes corresponding to the above voltage is 20 mm.

[0108] In addition, the electrode voltage can also be a cosine pulse negative high voltage (cosine negative high voltage peak range: -2.5 to -4.5 kV) or a cosine pulse positive high voltage (cosine positive high voltage peak range: 2.5 to 4.5 kV), in which case the relative voltage of the counter electrode relative to the high voltage electrode is "0". It should be noted that the spacing between the two electrodes corresponding to the above voltage is 20 mm.

[0109] In some embodiments, in some implementations of some embodiments, reference Figure 8 The distance between the first electrode plate 3632 and the substrate plate 3631 is 0.1 mm-5 mm. Similarly, the distance between the second electrode plate 3633 and the substrate plate 3631 is 0.1 mm-5 mm.

[0110] Based on the distance between the two electrodes, the DBD discharge voltage is relatively low, which means that the photocatalyst can be excited efficiently without generating ozone or the amount of ozone generated is low and below the user perception threshold. Therefore, the photocatalytic unit 363 using DBD discharge coupled photocatalyst can operate continuously, speed up the deodorization speed, and improve the deodorization efficiency. There is no need to set an operating control program to reduce the discharge time and frequency in order to control ozone at a lower concentration like an ordinary ion generating device 36, which leads to a decrease in the deodorization speed.

[0111] In the related art, ultraviolet light is generally used to excite photocatalysts or photoelectric catalysis is used to excite photocatalysts. However, ultraviolet light excitation can only excite photocatalysts on the surface of the irradiated carrier, and the photoelectric conversion efficiency of ultraviolet light is also low, which has the problem of low energy utilization. Although photoelectric catalysis is provided with an external bias electric field to delay the recombination of electrons and holes, thereby improving the catalytic efficiency, it has the problems of low energy utilization and high cost. Compared with the above-mentioned implementation method, the use of dielectric barrier discharge coupled photocatalyst in the present application has high energy utilization, low cost, and faster deodorization speed. In some embodiments, the refrigerator also includes an ambient temperature detection device 8, which is arranged on the outside of the box body and is used to detect the temperature value of the environment around the box body during the operation of the refrigerator. In the embodiment of the present application, the temperature in the environment is used to assist in judging whether it is necessary to start the sterilization and deodorization action during defrosting.

[0112] In some implementations of this embodiment, refer to Figure 3The refrigerator also includes a cold catalyst catalytic unit 364, which is arranged on a side of the internal air duct 35 close to the air outlet 33. Specifically, the cold catalyst catalytic unit 364 is arranged on a side of the photocatalytic unit 363 close to the air outlet 33, and is used to further adsorb and decompose odor molecules in the air and degrade ozone generated by high-voltage discharge of the strong oxidizing ion generating unit 362.

[0113] The cold catalyst catalytic unit 364 includes a cold catalyst substrate, a plurality of through holes are provided on the cold catalyst substrate, and the outer surface of the cold catalyst substrate is wrapped with a cold catalyst layer. The airflow in the housing 31 flows through the cold catalyst layer and then flows back to the interior of the box through the air outlet 33. Specifically, the airflow in the housing 31 that has been reacted with strong oxidizing ions, positive ions, and negative ions passes through the cold catalyst layer and is further cleaned, thereby ensuring the cleaning effect. Exemplarily, the cold catalyst substrate is configured as a porous ceramic, and the surface of the porous ceramic is coated with a cold catalyst.

[0114] In some implementations not shown in the figure of this embodiment, the refrigerator also includes an ethylene removal unit for removing ethylene inside the box. The purpose of this is that ethylene is an endogenous ripening-promoting physiologically active factor released by respiratory transition fruits and vegetables when they mature after harvest. Reducing the ethylene content in the storage environment can effectively prolong the shelf life of fruits and vegetables.

[0115] Reference Fig.11 The refrigerator in the embodiment of the present application further includes a controller 6. The controller 6 obtains various operating parameters of the refrigerator through various control programs stored in the memory, and controls the operation of various parts of the refrigerator and responds to user operations. The controller 6 can control the working state of the ion generating device 36 according to the detected state of the refrigerator to achieve the sterilization and deodorization function of the cabinet.

[0116] The controller 6 controls the overall operation of the refrigerator. For example, in response to receiving a sterilization and deodorization instruction issued by a user, the controller 6 can perform operations related to the object selected by the sterilization and deodorization instruction.

[0117] In some embodiments, the controller 6 includes at least one of a central processing unit (CPU), a video processor, an audio processor, a graphics processing unit (GPU), a RAM Random Access Memory (RAM), a ROM (Read-Only Memory, ROM), a first interface to an nth interface for input / output, a communication bus (Bus), etc.

[0118] In the embodiment shown in the present application, the controller 6 refers to a device that can generate an operation control signal according to an instruction operation code and a timing signal to instruct the refrigerator to execute a control instruction.

[0119] The present application embodiment also provides a hardware structure diagram of a controller 6, such as Fig.11 As shown, the controller 6 includes a processor 83, and optionally, also includes a memory 82 and a communication interface 84 connected to the processor 83. The processor 83, the memory 82 and the communication interface 84 are connected via a bus 81.

[0120] The processor 83 may be a central processing unit 83 (CPU), a general processor 83, a network processor 83 (NP), a digital signal processor 83 (DSP), a microprocessor 83, a microcontroller 68, a programmable logic device (PLD), or any combination thereof. The processor 83 may also be any other device having a processing function, such as a circuit, a device, or a software module. The processor 83 may also include multiple CPUs, and the processor 83 may be a single-CPU processor 83 or a multi-CPU processor 83. The processor 83 here may refer to one or more devices, circuits, or processing cores for processing data (such as computer program instructions).

[0121] The memory 82 may be a read-only memory 82 (ROM) or other types of static storage devices that can store static information and instructions, a random access memory 82 (RAM) or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory 82 (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of an instruction or data structure and can be accessed by a computer, and the embodiment of the present application does not impose any restrictions on this. The memory 82 may exist independently or be integrated with the processor 83. Among them, the memory 82 may contain a computer program code. The processor 83 is used to execute the computer program code stored in the memory 82, thereby realizing the control method of the multi-connected refrigerator 100 system provided in the embodiment of the present application.

[0122] The communication interface 84 can be used to communicate with other devices or communication networks (such as Ethernet, radio access network (RAN), wireless local area network (WLAN), etc. The communication interface 84 can be a module, a circuit, a transceiver or any device that can achieve communication.

[0123] The bus 81 may be a peripheral component interconnect (PCI) bus 81 or an extended industry standard architecture (EISA) bus 81, etc. The bus 81 may be divided into an address bus 81, a data bus 81, a control bus 81, etc. For ease of representation, Fig.11 Although only one thick line is used in the figure, it does not mean that there is only one bus 81 or only one type of bus 81.

[0124] In some implementations of this embodiment, the controller 6 is installed on the door 2. Of course, the controller 6 can also be installed on the box body for layout purposes.

[0125] In some implementations of this embodiment, refer to Figure 1 The refrigerator further includes an image acquisition device 5, which is installed inside the box body and is electrically connected to the controller 6. The image acquisition device 5 is used to acquire images of the food storage area in the box body and send the images to the controller 6. The controller 6 can determine whether the food storage area has increased or decreased food and the quantity and type of food based on the received images, so as to facilitate the sterilization and deodorization operation of the refrigerator. Exemplarily, the image acquisition device 5 is set as a camera, which acquires images and sends them to the controller 6.

[0126] It should be noted that the controller 6 can perform image recognition based on the images captured by the image acquisition device 5, and after selecting the object, obtain the quantity and change of the food, and compare the recognized object with the internally stored food database to obtain the type of food. Its internal image recognition technical solution is not the focus of the technical solution of this application and will not be elaborated on.

[0127] In some implementations of this embodiment, the image acquisition device 5 can also be installed on the top in front of the refrigeration chamber 1, or in the inner tank 12, so as to capture changes in food in the box.

[0128] In some implementations of this embodiment, refer to Figure 1The refrigerator further includes an odor detection device 4, which is installed in the main air duct and is used to detect the odor concentration in the box and send the odor concentration signal to the controller 6. Exemplarily, the odor detection device 4 is configured as an odor detection sensor, which is used to detect the odor concentration in the box and send the odor concentration signal to the controller 6, so that the controller 6 controls the corresponding odor removal component to remove the odor.

[0129] Reference Figure 2 The controller 6 is electrically connected to the door closing detection component 9, the odor detection device 4, the image acquisition device 5, the positive and negative ion generating unit 361, the strong oxidizing ion generating unit 362, the photocatalyst catalysis unit 363, the ambient temperature detection device 8, the built-in fan 34 and the air duct fan 10, and receives the detected ambient temperature, odor concentration and image, and the door opening and closing signals to control the operation of the positive and negative ion generating unit 361, the strong oxidizing ion generating unit 362 and the photocatalyst catalysis unit 363, the built-in fan 34 and the air duct fan 10.

[0130] In some implementations of this embodiment, in order to remove odor, the controller 6 is configured to, when the odor concentration detected by the odor detection device 4 reaches a first preset concentration condition, turn on the built-in fan 34, turn on the photocatalyst catalytic unit 363, and the airflow in the box passes through the surface of the photocatalyst catalytic unit 363 under the action of the built-in fan 34 to remove odor molecules in the airflow. In this process, the airflow passes through the through holes, and the through holes of the substrate plate 3631 can increase the contact area between the airflow and the photocatalyst layer 3634.

[0131] Reference Fig.12 , which explains the control logic of the refrigerator for intelligent odor removal and sterilization functions based on the refrigerator being equipped with an odor detection device 4 and an image acquisition device 5.

[0132] The odor detection device 4 detects the odor value in the refrigerating chamber 1 in the box in real time (step S1101). In the present application, the odor value is divided into a first gear, a second gear, and a third gear from high to low, which correspond to the three levels of the user's olfactory perception of odor from high to low;

[0133] Determine whether the odor value meets the first level (step S1102);

[0134] In step S1102, if the odor value meets the first level, step S1103 is executed to determine whether the box is still in a closed state;

[0135] In step S1103, if the box is in a closed state, execute step S1104, turn on the photocatalyst catalytic unit 363, turn on the built-in fan 34 and control the built-in fan 34 to run at a first speed to quickly and efficiently remove odors; here, the built-in fan 34 includes at least two working speeds, a first speed and a second speed, and the first speed is greater than the second speed.

[0136] After executing step S1104, executing step S1110, determining whether the odor value satisfies the second gear;

[0137] In step S1110, if the odor value meets the second level, step S1107 is executed;

[0138] In step S1110, if the odor value does not meet the second level, then continue to execute step S1104;

[0139] In step S1103, if the box is not in the closed state, continue to execute step S1103;

[0140] In step S1102, if the odor value does not meet the first level, step S1105 is executed to determine whether the odor value meets the second level;

[0141] In step S1105, if the odor value meets the second level, step S1106 is executed to determine whether the box is still in a closed state;

[0142] In step S1106, if the box is in the closed state, step S1107 is executed to turn on the photocatalyst unit 363, turn on the built-in fan 34 and control the built-in fan 34 to run at the second speed;

[0143] After executing step S1107, executing step S1111, determining whether the odor value satisfies the third level;

[0144] In step S1111, if the odor value meets the third level, step S1109 is executed;

[0145] In step S1111, if the odor value does not meet the third level, then continue to execute step S1107;

[0146] In step S1106, if the box is in an unclosed state, step S1106 is executed;

[0147] In step S1105, if the odor value does not meet the second level, step S1108 is executed to determine whether the odor value meets the third level;

[0148] In step S1108 , if the odor value satisfies the third level, step S1109 is executed to turn off the photocatalyst unit 363 and the built-in fan 34 .

[0149] The above steps consider that the odor in the box rises due to the introduction of external air or external substances, but do not consider the situation where the odor concentration increases when the door is closed. If the door is suddenly opened during the deodorization process, the deodorization work will stop.

[0150] During the above deodorization process, if the refrigerator door 2 is opened, the photocatalyst unit 363 is immediately turned off and the fan is turned off. Through the above control method, the odor sensor and the deodorization component can be linked to achieve intelligent on-demand deodorization, and the deodorization speed is fast and efficient, and user perception, user interaction and energy saving are taken into account.

[0151] In some implementations of this embodiment, before turning on the photocatalyst catalytic unit 363, it is necessary to determine whether the time the photocatalyst catalytic unit 363 has been in the shutdown state has reached the set shutdown time. If the time the photocatalyst catalytic unit 363 has been in the shutdown state has not reached the set shutdown time, wait until the set shutdown time before turning it on.

[0152] In some implementations of this embodiment, refer to Figure 1 The refrigerator further includes a door closing detection component 9, which is installed on the door 2 or the box body, and is used to detect the state of the door 2 and send a door opening signal or a door closing signal to the controller 6. Exemplarily, the door closing detection component 9 is set as a door closing detection sensor, which is used to detect whether the box body is in a closed state, and whether it is necessary to remove the floating bacteria.

[0153] In some implementations of the present embodiment, the controller is configured to, after receiving the door closing signal emitted by the door closing detection component 9, receive the image captured by the image acquisition device 5 and judge whether food is added to the food storage area based on the image; when food is added to the food storage area, it is determined that the newly introduced bacteria in the box are attached bacteria, and the strong oxidizing ion generating unit 362 is turned on to generate a strong oxidizing ion group; when food is not added or reduced in the food storage area, it is determined that the newly introduced bacteria in the box are floating bacteria, and the positive and negative ion generating units 361 are turned on to generate positive and negative ion groups.

[0154] Through the above steps, by receiving the door closing signal emitted by the door closing detection component 9, it is ensured that the cabinet is in a closed environment at this time to provide a sterilization environment; then, according to the image acquisition device 5, the main type of bacteria introduced during the door opening process can be determined, and the positive and negative ion generating units 361 or the strong oxidizing ion generating units 362 can be turned on in a targeted manner to achieve precise sterilization while reducing the energy consumption of the refrigerator.

[0155] It should be noted that the reason for first detecting the door closing signal and then performing image acquisition is that: first, it is determined that the refrigerator is in a closed environment, that is, it is determined that no new bacteria will be introduced at this time to ensure the efficiency of sterilization. Then, the image is acquired, which reduces the working frequency of the image acquisition device 5 and does not require real-time detection.

[0156] It can be known that it is also possible to first determine whether new ingredients are added to the box, and then perform targeted sterilization immediately after detecting the door closing signal. Although this method requires periodic collection and increases the demand for hardware, it opens the sterilization node in advance and speeds up the sterilization process.

[0157] In some implementations of this embodiment, the controller is configured to, when the controller receives a strong sterilization signal, turn on the strong oxidation ion generating unit 362 or the positive and negative ion generating unit 361, and turn on the built-in fan 34 to accelerate the gas flow rate in the shell, and after working for a period of time, turn off the built-in fan 34, and turn off the strong oxidation ion generating unit 362 or the positive and negative ion generating unit 361 in operation. It can be known that in some modes, it can be set to turn on the built-in fan 34 when the strong oxidation ion generating unit 362 and the positive and negative ion generating unit 361 are working to speed up the sterilization efficiency.

[0158] In some implementations of this embodiment, before turning on the positive and negative ion generating unit 361, it is necessary to determine whether the time the positive and negative ion generating unit 361 has been in the shutdown state has reached the set shutdown time. If the time in the shutdown state has not reached the set shutdown time, wait until the set shutdown time before turning it on.

[0159] Similarly, before turning on the strong oxidation ion generating unit 362, it is necessary to determine whether the time the strong oxidation ion generating unit 362 has been in the shutdown state has reached the set shutdown time. If the time the strong oxidation ion generating unit 362 has been in the shutdown state has not reached the set shutdown time, wait until the set shutdown time before turning it on.

[0160] The sterilization function in the present application can determine whether the main contaminating bacteria newly introduced into the refrigerator are surface-attached bacteria or planktonic bacteria in the air in the refrigerator through the image acquisition device 5 and the door closing detection component 9, and perform targeted sterilization.

[0161] Reference Fig.12 , explaining the sterilization logic of the refrigerator in this application.

[0162] When the refrigerator door is opened, the image acquisition device 5 detects in real time whether new food is put into the refrigerator (step S1201);

[0163] If in step S1201, no new food is put into the refrigerator, it is determined that the main contaminating bacteria newly introduced into the refrigerator are airborne bacteria introduced by opening the refrigerator door, and step S1202 is executed to determine whether the refrigerator is in a closed state;

[0164] If in step S1202, the box is in a closed state, step S1203 is executed to determine whether the positive and negative ion generating unit 361 reaches a first preset time length;

[0165] In step S1203, if the positive and negative ion generating unit 361 reaches the first preset time length, step S1204 is executed to turn on the positive and negative ion generating unit 361 and the built-in fan 34;

[0166] It should be noted that the first preset duration is preset, and can be 30 minutes, 60 minutes, or other time periods, and the present invention does not limit this. By setting the first preset duration, it is possible to avoid repeatedly starting the ion circuit of the positive and negative ion generating unit 361 in a short period of time, thereby avoiding energy waste.

[0167] Determine whether the operation time of the positive and negative ion generating unit 361 reaches a second preset time (step S1205);

[0168] In step S1205, if the operation time of the positive and negative ion generating unit 361 reaches the second preset time, step S1206 is executed to turn off the positive and negative ion generating unit 361 and the built-in fan 34;

[0169] In step S1205, if the operation time of the positive and negative ion generating unit 361 does not reach the second preset time, step S1205 is executed;

[0170] It should be noted that the second preset duration is preset, and can be 5 minutes, 10 minutes, or other time, and the present invention does not limit this. The second preset duration can be set to avoid the ion circuit of the positive and negative ion generating unit 361 from running continuously for a long time, thereby avoiding energy waste.

[0171] In step S1203, if the positive and negative ion generating unit 361 has not reached the first preset time length, step S1203 is executed;

[0172] During the operation of the ion circuit of the positive and negative ion generating unit 361, it is monitored in real time whether the door of the refrigerator's cold storage chamber 1 is open. If a door opening signal is detected, the ion circuit of the positive and negative ion generating unit 361 is immediately disconnected and the operation of the built-in fan 34 is stopped.

[0173] In step S1202, if the box is not in a closed state, step S1206 is executed to close the positive and negative ion generating unit 361 and the built-in fan 34;

[0174] If in step S1201, new food is put into the refrigerator, it is determined that the main contaminating bacteria newly introduced into the refrigerator are attached bacteria introduced by opening the refrigerator door, and then step S1207 is executed to determine whether the refrigerator is in a closed state;

[0175] If in step S1207, the box is in a closed state, step S1208 is executed to determine whether the strong oxidation ion generating unit 362 reaches a third preset time length;

[0176] In step S1208, if the strong oxidation ion generating unit 362 reaches the third preset time length, step S1209 is executed to turn on the strong oxidation ion generating unit 362 and the built-in fan 34;

[0177] It should be noted that the third preset time is preset, and can be 30 minutes, 60 minutes, or other time, and the present invention does not limit this. The third preset time can be set to avoid repeatedly starting the ion circuit of the strong oxidation ion generating unit 362 in a short time, thereby avoiding energy waste.

[0178] Determine whether the operation time of the positive and negative ion generating unit 361 reaches a fourth preset time (step S1210);

[0179] It should be noted that the fourth preset time length is preset, and can be 5 minutes, 10 minutes, or other time, and the present invention does not limit this. The fourth preset time length can be set to avoid the ion circuit of the strong oxidation ion generating unit 362 from running continuously for a long time, thereby avoiding energy waste and avoiding excessive ozone.

[0180] In step S1210, if the operation time of the strong oxidation ion generating unit 362 reaches the fourth preset time, step S1211 is executed to turn off the positive and negative ion generating unit 361 and the built-in fan 34;

[0181] In step S1210, if the operation time of the strong oxidizing ion generating unit 362 does not reach the fourth preset time, step S1210 is executed;

[0182] In step S1208, if the strong oxidation ion generating unit 362 has not reached the third preset time length, step S1208 is executed;

[0183] In step S1207, if the box is not in the closed state, step S1212 is executed to close the positive and negative ion generating unit 361 and the built-in fan 34;

[0184] During the operation of the ion circuit of the strong oxidation ion generating unit 362, it is monitored in real time whether the door of the refrigerator compartment 1 is opened. If a door opening signal is detected, the ion circuit of the strong oxidation ion generating unit 362 is immediately disconnected and the operation of the built-in fan 34 is stopped.

[0185] In some implementations of this embodiment, when the door opening signal sent by the door closing detection component 9 is received, the calculation of the opening time of the refrigerator begins. After receiving the door closing signal sent by the door closing detection component 9, when the opening time of the refrigerator reaches the preset door opening time, the positive and negative ion generating units 371 are turned on to remove the floating bacteria in the box.

[0186] Reference Fig.15 , indicating that it is simultaneously determined whether the door opening time reaches the preset door opening time and whether to add sterilization control logic for food in the box.

[0187] Detecting the door opening signal sent by the door closing detection component 9 (step S1413); when the refrigerator door is opened, the image acquisition device 5 detects in real time whether new food is put into the refrigerator (step S1401);

[0188] Start calculating the refrigerator door opening time (step S1412);

[0189] If in step S1401, no new food is put into the refrigerator, it is determined that the main contaminating bacteria newly introduced into the refrigerator are airborne bacteria introduced by opening the refrigerator door, and step S1402 is executed to determine whether the refrigerator is in a closed state;

[0190] If in step S1402, the box is in a closed state, step S1403 is executed to determine whether the positive and negative ion generating unit 361 has reached a first preset time length;

[0191] In step S1403, if the positive and negative ion generating unit 361 reaches the first preset time length, step S1404 is executed to turn on the positive and negative ion generating unit 361 and the built-in fan 34;

[0192] It should be noted that the first preset duration is preset, and can be 30 minutes, 60 minutes, or other time periods, and the present invention does not limit this. By setting the first preset duration, it is possible to avoid repeatedly starting the ion circuit of the positive and negative ion generating unit 361 in a short period of time, thereby avoiding energy waste.

[0193] Determine whether the operation time of the positive and negative ion generating unit 361 reaches a second preset time (step S1405);

[0194] In step S1405, if the operation time of the positive and negative ion generating unit 361 reaches the second preset time, step S1406 is executed to turn off the positive and negative ion generating unit 361 and the built-in fan 34;

[0195] In step S1405, if the operation time of the positive and negative ion generating unit 361 does not reach the second preset time, step S1405 is executed;

[0196] It should be noted that the second preset duration is preset, and can be 5 minutes, 10 minutes, or other time, and the present invention does not limit this. The second preset duration can be set to avoid the ion circuit of the positive and negative ion generating unit 361 from running continuously for a long time, thereby avoiding energy waste.

[0197] In step S1403, if the positive and negative ion generating unit 361 has not reached the first preset time length, step S1403 is executed;

[0198] During the operation of the ion circuit of the positive and negative ion generating unit 361, it is monitored in real time whether the door of the refrigerator's cold storage chamber 1 is open. If a door opening signal is detected, the ion circuit of the positive and negative ion generating unit 361 is immediately disconnected and the operation of the built-in fan 34 is stopped.

[0199] In step S1402, if the box is not in a closed state, step S1406 is executed to close the positive and negative ion generating unit 361 and the built-in fan 34;

[0200] If in step S1401, new food is put into the refrigerator, it is determined that the main contaminating bacteria newly introduced into the refrigerator are attached bacteria introduced by opening the refrigerator door, and step S1407 is executed to determine whether the refrigerator is in a closed state;

[0201] If in step S1407, the box is in a closed state, step S1408 is executed to determine whether the strong oxidation ion generating unit 362 has reached a third preset time length;

[0202] Execute step S1414 to determine whether the door opening time of the refrigerator reaches the preset door opening time;

[0203] In step S1414, if the door opening time of the refrigerator reaches the preset door opening time, step S1415 is executed to turn on the positive and negative ion generating unit 361 and the built-in fan 34;

[0204] In step S1414, if the door opening time of the refrigerator does not reach the preset door opening time, step S1416 is executed to keep the positive and negative ion generating unit 361 closed;

[0205] In step S1408, if the strong oxidation ion generating unit 362 reaches the third preset time length, step S1409 is executed to turn on the strong oxidation ion generating unit 362 and the built-in fan 34;

[0206] It should be noted that the third preset time is preset, and can be 30 minutes, 60 minutes, or other time, and the present invention does not limit this. The third preset time can be set to avoid repeatedly starting the ion circuit of the strong oxidation ion generating unit 362 in a short time, thereby avoiding energy waste.

[0207] Determine whether the operation time of the positive and negative ion generating unit 361 reaches a fourth preset time (step S1410);

[0208] It should be noted that the fourth preset time length is preset, and can be 5 minutes, 10 minutes, or other time, and the present invention does not limit this. The fourth preset time length can be set to avoid the ion circuit of the strong oxidation ion generating unit 362 from running continuously for a long time, thereby avoiding energy waste and avoiding excessive ozone.

[0209] In step S1410, if the operation time of the strong oxidation ion generating unit 362 reaches the fourth preset time, step S1411 is executed to turn off the positive and negative ion generating unit 361 and the built-in fan 34;

[0210] In step S1410, if the operation time of the strong oxidizing ion generating unit 362 does not reach the fourth preset time, step S1410 is executed;

[0211] In step S1408, if the strong oxidation ion generating unit 362 has not reached the third preset time length, step S1408 is executed;

[0212] In step S1407, if the box is not in the closed state, step S1412 is executed to close the positive and negative ion generating unit 361 and the built-in fan 34;

[0213] During the operation of the ion circuit of the strong oxidation ion generating unit 362, it is monitored in real time whether the door of the refrigerator compartment 1 is opened. If a door opening signal is detected, the ion circuit of the strong oxidation ion generating unit 362 is immediately disconnected and the operation of the built-in fan 34 is stopped.

[0214] In the above steps, if new food is introduced into the box body odor, but the door opening time reaches the preset door opening time, the operating speed of the built-in fan 34 can be increased to speed up the air flow rate and / or the voltage of the ion circuit of the strong oxidation ion generating unit 362 can be increased to increase the ion concentration, thereby achieving faster sterilization and improving sterilization efficiency.

[0215] Reference Fig.16 , which illustrates another control logic for simultaneously judging whether the door opening time reaches the preset door opening time and whether to increase the sterilization of food in the box.

[0216] Determine whether the box is open (step S1501);

[0217] In step S1501, if the cabinet is open, step S1502 is executed to start calculating the door opening time of the refrigerator;

[0218] Determine whether the box is closed (step S1503);

[0219] In step S1503, if the refrigerator is closed, step S1504 is executed to determine whether food is put into the refrigerator during the door opening period; and the door opening time is recorded (step S1505);

[0220] In step S1504, if no food is put into the refrigerator during the door opening period, it is determined that the main contaminating bacteria newly introduced into the refrigerator are floating bacteria introduced by opening the refrigerator door; then step S1506 is executed to turn on the positive and negative ion generating unit 361 and the built-in fan 34;

[0221] In step S1511, it is determined whether the door opening time of the refrigerator reaches the preset door opening time;

[0222] In step S1511, if the door opening time of the refrigerator reaches the preset door opening time, step S1512 is executed to increase the voltage of the high-voltage power supply to the positive and negative ion generating unit 361 and increase the operating speed of the built-in fan 34;

[0223] In step S1511, if the door opening time of the refrigerator does not reach the preset door opening time, step S1513 is executed to maintain the working state of the built-in fan 34 and the positive and negative ion generating unit 361.

[0224] In step S1504, if new food is put into the refrigerator during the door opening period, it is determined that the main contaminating bacteria newly introduced into the refrigerator are attached bacteria introduced by the refrigerator door opening; then step S1510 is executed to turn on the strong oxidizing ion generating unit 362 and the built-in fan 34;

[0225] Execute step S1507 to determine whether the door opening time of the refrigerator reaches the preset door opening time;

[0226] In step S1507, if the door opening time of the refrigerator reaches the preset door opening time, step S1508 is executed to turn on the positive and negative ion generating unit 361 and the built-in fan 34;

[0227] In step S1507, if the door opening time of the refrigerator does not reach the preset door opening time, step S1509 is executed to keep the positive and negative ion generating unit 361 closed;

[0228] In step S1503, if the box is not closed, continue to execute step S1502.

[0229] In some implementations of this embodiment, the working time of the positive and negative ion generating unit 361 and the strong oxidizing ion generating unit 362 is related to the type and quantity of the food and the opening time of the box.

[0230] Specifically, the working time of the strong oxidizing ion generating unit 362 and / or the positive and negative ion generating unit 361 is related to the door opening time or the number and type of food. Within a certain range, the longer the door opening time, the longer the working time of the strong oxidizing ion generating unit 362; the more the number of newly added food, the longer the working time of the positive and negative ion generating unit 361.

[0231] Regarding the type of food, when the food is perishable, the working time of the positive and negative ion generating unit 361 and the strong oxidizing ion generating unit 362 is increased. For example, the perishable food may include strawberries and cherries.

[0232] In the above embodiment, a refrigerator is proposed, which includes a box body with a front opening and a rear wall arranged opposite to each other, a box door 2 arranged at the front opening and used for opening or closing the box body, an image acquisition device 5 arranged inside the box body, a door closing detection component 9 arranged on the box body, a cleaning device 3 arranged in the box body, and a controller 6 for controlling the actions of various components of the refrigerator, wherein the image acquisition device 5 is used to acquire images for identifying whether a user adds or reduces food into the box body, the door closing detection component 9 is used to detect the switch state of the box body, the cleaning device 3 is used to remove bacteria in the box body, and the cleaning device 3 further includes a shell 31 arranged in the box body, a positive and negative ion generating unit 361 arranged in the shell 31, and a strong oxidizing ion generating unit 362, wherein the positive The negative ion generating unit 361 is used to remove the floating bacteria in the air in the box by using the positive and negative ions generated by itself, and the strong oxidizing ion generating unit 362 is used to remove the attached bacteria on the inner wall and the surface of the food in the box by using the strong oxidizing ions generated by itself. The controller 6 is configured to receive the image captured by the image acquisition device 5 and judge whether the food storage area has added food based on the image after receiving the door closing signal sent by the door closing detection component 9. When the food storage area has added food, it is judged that the newly introduced bacteria in the box at this time are attached bacteria, and the strong oxidizing ion generating unit 362 is turned on. When the food storage area has added or reduced food, it is judged that the newly introduced bacteria in the box at this time are floating bacteria, and the positive and negative ion generating unit 361 is turned on. The type of bacteria newly introduced in the box is judged according to the image captured by the image acquisition device 5, and the corresponding ion generating unit is turned on accordingly to generate the corresponding ion group, thereby achieving targeted sterilization and improving the efficiency of sterilization.

[0233] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A refrigerator, characterized in that: include: A box body, the box body having a front opening and a rear wall arranged opposite to each other; A box door, which is arranged at the front opening and is used to open or close the box; An image acquisition device, which is arranged inside the box, and is used to acquire images for identifying whether a user adds or subtracts food into the box; A door closing detection component, which is arranged on the box body and is used to detect the opening and closing state of the box body; A cleaning device is disposed in the box and is used to remove bacteria in the box. The cleaning device further comprises: A housing, which is disposed in the box; A positive and negative ion generating unit is disposed in the housing and is used to remove floating bacteria in the air in the housing by using the positive and negative ion groups generated by the unit; A strong oxidizing ion generating unit is disposed in the housing and is used to remove bacteria attached to the inner wall of the housing and the surface of food materials by using the strong oxidizing ion group generated by the unit; The housing also includes: Air inlet; Air outlet; An internal air duct, which is arranged in the shell and communicated with the air inlet and the air outlet, and the positive and negative ion generating units and the strong oxidation ion generating unit are installed in the internal air duct; A built-in fan, which is arranged on one side of the internal air duct close to the air inlet, and is used to accelerate the air flow in the housing; The refrigerator further comprises a controller configured to, upon receiving a door closing signal sent by the door closing detection component, receive the image captured by the image acquisition device and determine whether food is added to the food storage area based on the image; When food is added to the food storage area, it is determined that the newly introduced bacteria in the box are attached bacteria, and the strong oxidizing ion generating unit is turned on; When the food storage area does not increase or decrease food, it is determined that the type of bacteria newly introduced into the box is planktonic bacteria, and the positive and negative ion generating unit is turned on; When a strong sterilization signal is received, the built-in fan is turned on to accelerate the airflow velocity inside the shell. After working for a period of time, the built-in fan is turned off, and the strong oxidation ion generating unit or the positive and negative ion generating unit in operation is turned off.

2. The refrigerator according to claim 1, characterized in that: The cleaning device further comprises a high voltage power supply, which is used to emit a high voltage to at least discharge the strong oxidation ion generating unit and / or the positive and negative ion generating unit to form an ion group.

3. The refrigerator according to claim 2, characterized in that: The strong oxidizing ion generating unit comprises an emitting electrode structure, one side of the emitting electrode structure is set as a needle tip structure, the needle tip structure is arranged on the side of the built-in fan close to the air outlet, and the emitting electrode structure is used to use the high voltage provided by the high voltage power supply to make the needle tip structure corona discharge to form a strong oxidizing ion group to remove the floating bacteria in the box; The controller controls the concentration of the generated strong oxidizing ions using a discharge control rule so that the concentration of the strong oxidizing ions is below a set threshold value, and the set threshold value is set according to the user's perception level.

4. The refrigerator according to claim 2, characterized in that: The positive and negative ion generating unit comprises: A positive electrode, which is arranged on a side of the built-in fan close to the air outlet; A negative electrode, which is arranged on a side of the built-in fan close to the air outlet, and the negative electrode and the positive electrode are arranged along the length direction of the shell; The positive electrode and the negative electrode form a positive ion group and a negative ion group using the high voltage provided by the high voltage power supply to remove attached bacteria in the box.

5. The refrigerator according to claim 1, characterized in that: The box body includes an inner liner forming a storage space and an outer shell connected to the outer side of the inner liner, and a main air duct is formed between the inner liner and the outer shell; An odor detection device is arranged in the main air duct and is used to detect the concentration of odor in the box so as to remove the odor; A photocatalyst unit is disposed in the housing and horizontally placed in the internal air duct; The controller is configured to, when the odor concentration detected by the odor detection device reaches a first preset concentration condition, turn on the built-in fan and the photocatalyst catalysis unit, so that the airflow in the box passes through the surface of the photocatalyst catalysis unit under the action of the built-in fan to remove odor molecules in the airflow.

6. The refrigerator according to claim 1, characterized in that: The working time of the positive and negative ion generating units and the strong oxidation ion generating unit is related to the type and quantity of the food and the opening time of the box.

7. The refrigerator according to claim 5, characterized in that: Before starting the photocatalyst catalysis unit, the strong oxidizing ion generating unit, and the positive and negative ion generating unit, it is necessary to determine whether the time for which the corresponding unit or device has been in a shutdown state reaches the corresponding set shutdown time; If the time in the shutdown state does not reach the corresponding set shutdown time, wait until the corresponding set shutdown time before restarting.

8. The refrigerator according to claim 5, characterized in that: During the operation of the strong oxidizing ion generating unit and / or the positive and negative ion generating unit and / or the photocatalyst catalysis unit, when it is detected that the door closing detection component sends a door opening signal, the strong oxidizing ion generating unit and / or the positive and negative ion generating unit and / or the photocatalyst catalysis unit stops working and the built-in fan is turned off.

9. The refrigerator according to claim 3, characterized in that: When a door opening signal is received from the door closing detection component, the door opening time of the refrigerator starts to be calculated. After receiving the door closing signal from the door closing detection component, when the door opening time of the refrigerator reaches the preset door opening time, the positive and negative ion generating units are turned on to remove floating bacteria in the box.

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