Refrigerator

Abstract

The refrigerator comprises a purification device arranged in a containing space or an air duct, the purification device comprises a power source component used for providing voltage and a catalyst assembly electrically connected with the power source component, and the catalyst assembly receives the voltage output by the power source component so as to at least generate an electric field around the catalyst assembly. The catalyst assembly comprises a conductive catalyst carrier and an insulating catalyst layer coated on the surface of the conductive catalyst carrier. The controller is configured to control the power supply part to provide voltage to the conductive catalyst carrier, so that a potential difference is formed between the conductive catalyst carrier and the ground, and a catalytic electric field is formed around the conductive catalyst carrier; the insulating catalyst layer at least catalyzes and decomposes peculiar smell molecules in air flow under the action of the catalytic electric field. The electric field generated by electrifying the catalyst assembly catalyzes the insulating catalyst layer to catalyze and decompose peculiar smell molecules in airflow, and the purification efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of refrigerators, and particularly relates to a refrigerator. Background Art

[0002] At present, users' requirements for refrigerator purification have increased significantly. In related technologies, refrigerators use catalyst technology for purification. Specifically, the electric field excitation catalyst catalytic purification technology is adopted, and its basic structure is that a catalyst block is sandwiched between two electrodes, and the catalyst is excited by a high-voltage electric field to realize the catalytic decomposition of odor molecules. However, in the above structure, a counter electrode is formed between the two electrodes, and a relatively high concentration of ozone will be generated during discharge, which is higher than the human sensory threshold. Therefore, the voltage can only be set below the discharge threshold voltage, and the catalyst is excited by a high-voltage electric field.

[0003] However, in the above technology, since the relative voltage between the two electrodes needs to be controlled below the discharge threshold voltage, the electric field strength is relatively low, and the catalyst cannot be fully excited for catalysis, resulting in a low catalytic efficiency.

[0004] In view of this, the present application is proposed. Summary of the Invention

[0005] In the present application, an electric field is formed around the catalyst block, and the catalyst is excited by the electric field to quickly catalytically decompose the odor molecules adsorbed by the catalyst block, realizing more efficient and faster purification. It can also actively sterilize the refrigerator compartment by releasing ions under certain conditions.

[0006] An embodiment of the present application provides a refrigerator, which includes:

[0007] A cabinet shell;

[0008] An inner liner, which is arranged inside the cabinet shell, and a receiving space is formed inside the inner liner;

[0009] An air duct assembly, which is arranged at the rear side or the front side of the rear wall of the inner liner, and the air duct assembly is configured to form an air duct, and the air duct communicates with the receiving space;

[0010] A purification device, which is arranged in the receiving space or the air duct, and the purification device includes:

[0011] A housing, which forms a cavity and an air return opening and an air supply opening communicating with the cavity;

[0012] A power supply component, which is used to provide voltage;

[0013] A catalyst assembly, which is arranged in the cavity, and the catalyst assembly is electrically connected to the power supply component to generate an electric field at least around the catalyst assembly. The catalyst assembly includes:

[0014] A catalyst carrier, which is set to have a porous structure to adsorb odor molecules in the air flow, and the catalyst carrier is arranged in the cavity;

[0015] A catalytic layer is provided on the surface of a conductive catalyst carrier for decomposing odor molecules; at least one of the catalyst carrier and the catalytic layer is conductive, and the catalytic layer or / and the catalyst carrier is electrically connected to a power supply component to generate an electric field around the catalytic layer; a first convex structure is formed on the surface of the catalytic layer to ionize air at the first convex structure to generate ions;

[0016] A controller is configured to control the power supply component to supply a voltage to the catalytic layer or / and the catalyst carrier, so as to form a catalytic electric field around the catalytic layer;

[0017] Control a purification fan so that when the air flow enters the cavity through the air return port and flows through the catalytic layer, it is catalytically decomposed by the catalytic layer under the synergistic action of the catalytic electric field and ions.

[0018] In the above solution, the physical electrode used to generate an electric field to excite catalysis in the related art is omitted, reducing the complexity of the internal structure of the purification device; in the above solution, the catalyst assembly is directly used as an electrode, a high voltage is provided to the catalyst assembly, and the catalyst is excited by the high voltage to improve the catalytic decomposition efficiency of the catalyst. After applying the high voltage, the catalyst assembly can also discharge to generate ions, and the catalyst is excited in situ by the ions and superimposed with the high voltage to synergistically excite the catalyst, further improving the catalytic decomposition efficiency of the catalyst, quickly catalytically decomposing odor molecules, and realizing the function of quickly purifying and removing odors.

[0019] In some embodiments, the purification device further includes:

[0020] A purification fan is provided in the cavity. Under the action of the purification fan, the air flow enters the cavity through the air return port and then enters the accommodation space through the air supply port;

[0021] The controller is configured to control the operation of the purification fan to accelerate the air flow rate when using the catalyst assembly to catalytically decompose odor molecules.

[0022] In the above solution, the built-in purification fan of the purification device is used to accelerate the air flow rate to improve the contact efficiency between the air flow and the catalyst assembly and the catalytic decomposition efficiency of the catalyst assembly. In some solutions, the fan in the air duct assembly can also be used to accelerate the air flow in the refrigerator.

[0023] In some embodiments, the catalyst carrier is set as a conductive catalyst carrier with a porous structure to adsorb odor molecules in the air, the catalytic layer is set as an insulating catalytic layer, the insulating catalytic layer is coated on the surface of the conductive catalyst carrier, and a number of first convex structures are formed on the surface of the insulating catalytic layer;

[0024] The power supply component provides a voltage to the conductive catalyst carrier so as to form a potential difference between the conductive catalyst carrier and the ground, and a catalytic electric field is generated around the conductive catalyst carrier;

[0025] When air flows into the cavity through the air return opening and passes through the insulating catalytic layer, the insulating catalytic layer catalyzes and decomposes the adsorbed odor molecules at least under the action of the catalytic electric field.

[0026] In the above solution, the catalyst assembly is connected to the power supply component, so that the catalyst assembly is at the high potential end and the ground is at the low potential end, and an electric field is formed between the catalyst assembly and the ground; the catalytic layer on the surface of the catalyst assembly efficiently catalyzes and decomposes the odor molecules in the air flow under the action of the electric field. The odor removal efficiency of the refrigerator is effectively improved.

[0027] In some embodiments, the catalyst carrier is set as an insulating catalyst carrier with a porous structure to adsorb odor molecules in the air; the catalytic layer is set as a conductive catalytic layer, the conductive catalytic layer is coated on the surface of the insulating catalyst carrier, and a number of first convex structures are formed on the surface of the conductive catalytic layer;

[0028] The power supply component provides voltage for the conductive catalytic layer, so that a potential difference is formed between the conductive catalytic layer and the ground, and a catalytic electric field is generated around the conductive catalytic layer;

[0029] When air flows into the cavity through the air return opening and passes through the conductive catalytic layer, the conductive catalytic layer catalyzes and decomposes the odor molecules adsorbed by the insulating catalyst carrier at least under the action of the catalytic electric field.

[0030] In the above solution, the catalyst assembly is connected to the power supply component, so that the catalyst assembly is at the high potential end and the ground is at the low potential end, and an electric field is formed between the catalyst assembly and the ground; the catalytic layer on the surface of the catalyst assembly efficiently catalyzes and decomposes the odor molecules in the air flow under the action of the electric field. The odor removal efficiency of the refrigerator is effectively improved.

[0031] In some embodiments, the catalyst carrier is set as a conductive catalyst carrier with a porous structure to adsorb odor molecules in the air; the catalytic layer is set as a conductive catalytic layer, the conductive catalytic layer is coated on the surface of the conductive catalyst carrier, and a number of first convex structures are formed on the surface of the conductive catalytic layer;

[0032] The power supply component provides voltage for the conductive catalytic layer and the conductive catalyst carrier, so that a potential difference is formed between the conductive catalytic layer and the ground, and a catalytic electric field is generated around the conductive catalytic layer;

[0033] When air flows into the cavity through the air return opening and passes through the conductive catalytic layer, the conductive catalytic layer catalyzes and decomposes the odor molecules adsorbed by the insulating catalyst carrier at least under the action of the catalytic electric field.

[0034] In the above solution, the catalyst assembly is connected to the power supply component, so that the catalyst assembly is at the high potential end and the ground is at the low potential end, and an electric field is formed between the catalyst assembly and the ground; the catalytic layer on the surface of the catalyst assembly efficiently catalyzes and decomposes the odor molecules in the air flow under the action of the electric field. The odor removal efficiency of the refrigerator is effectively improved.

[0035] In some embodiments, the refrigerator further includes:

[0036] A door body for opening or closing the accommodation space;

[0037] A door body detection device for detecting whether the door body is opened or closed;

[0038] The controller is configured to determine whether the door body is in a closed state before controlling the power supply component to supply voltage to the catalytic layer and / or the catalyst carrier. If it is in the closed state, the controller controls the power supply component to supply power.

[0039] In the above solution, before the refrigerator performs the odor removal or sterilization process, the sealing of the accommodation space inside the cabinet is ensured to avoid introducing outdoor odor molecules or bacteria and to ensure the efficiency of odor removal or sterilization.

[0040] In some embodiments, the controller is configured to control the power supply component to stop supplying power if the door body is detected to be opened during the period when the power supply component supplies voltage to the catalytic layer and / or the catalyst carrier.

[0041] In the above solution, during the refrigerator's odor removal or sterilization process, the sealing of the accommodation space inside the cabinet is ensured to avoid introducing outdoor odor molecules or bacteria and to ensure the efficiency of odor removal or sterilization.

[0042] In some embodiments, the purification device further includes:

[0043] A mounting seat for mounting the catalyst assembly;

[0044] A contact elastic sheet disposed on one side of the mounting seat for connecting the power supply component and the catalyst assembly. The contact elastic sheet includes:

[0045] A connecting portion connected to the power supply component;

[0046] An elastic member extending from the connecting portion towards the direction close to the catalytic layer;

[0047] When the catalyst assembly is mounted on the mounting seat, the elastic member is in contact connection with the catalyst assembly so that the catalyst assembly receives voltage.

[0048] By providing a contact elastic sheet, an effective connection between the catalyst assembly and the power supply component can be ensured, and the transmission of electric energy can be guaranteed.

[0049] In some embodiments, the controller is configured to;

[0050] When receiving a first signal, control the power supply component to supply a first voltage to the catalyst assembly. At this time, the catalyst assembly serves as the high potential end and the ground serves as the zero potential end, and a catalytic electric field is formed between the catalyst assembly and the ground;

[0051] Airflow enters the housing through the air return opening and flows through the catalytic layer. Under the action of the catalytic electric field, the catalytic layer catalyzes and decomposes the odor molecules in the airflow.

[0052] When receiving the second signal, the control power supply component provides a second voltage to the catalyst component. Among them, the second voltage is greater than the first voltage. At this time, a catalytic electric field is formed between the catalyst component and the ground, and the catalyst component discharges to generate ions.

[0053] Airflow enters the housing through the air return opening and flows through the catalytic layer. Under the synergistic action of the catalytic electric field and ions, the catalytic layer catalyzes and decomposes the odor molecules in the airflow.

[0054] In the above solution, the output voltage of the power supply component is adjusted according to different user needs to control the catalytic effect and purification function of the catalyst component. Under high voltage, the catalyst component will generate ions, and the catalytic layer efficiently catalyzes and decomposes the odor molecules in the airflow under the synergistic action of ions and the electric field.

[0055] This application also proposes a refrigerator, including:

[0056] A box shell;

[0057] An inner liner, which is arranged inside the box shell, and a containing space is formed inside the inner liner;

[0058] An air duct assembly, which is arranged at the rear or front side of the rear wall of the inner liner. The air duct assembly is configured to form an air duct, and the air duct communicates with the containing space;

[0059] A purification device, which is arranged in the containing space or the air duct. The purification device includes:

[0060] A housing, which forms a cavity, an air return opening and an air supply opening communicating with the cavity;

[0061] A power supply component, which is used to provide voltage;

[0062] A catalyst component, which is arranged in the cavity. The catalyst component includes:

[0063] A catalyst carrier, which is provided with a porous structure to adsorb odor molecules in the airflow. A second convex structure is formed on the outer surface of the catalyst carrier; the catalyst carrier is arranged in the cavity;

[0064] A catalytic layer, which is arranged on the surface of the catalyst carrier and is used to decompose odor molecules; at least one of the catalyst carrier and the catalytic layer is conductive, and the catalytic layer or / and the catalyst carrier is electrically connected to the power supply component to generate an electric field around the catalytic layer;

[0065] A controller, configured to control the power supply component to supply voltage to the catalyst assembly, so as to form a catalytic electric field around the catalytic layer, and the second convex structure ionizes air to generate ions;

[0066] When the air flow enters the cavity through the air return opening and flows through the catalytic layer, the catalytic layer catalytically decomposes the odor molecules adsorbed by the catalyst carrier under the synergistic action of the catalytic electric field and ions.

[0067] In the above solution, the physical electrode used to generate an electric field for excitation in the related art is omitted, reducing the complexity of the internal structure of the purification device; in the above solution, the catalyst assembly is directly used as an electrode, a high voltage is provided to the catalyst assembly, and the catalyst is excited by the high voltage to improve the catalytic decomposition efficiency of the catalyst. At the same time, a second convex structure is arranged on the surface of the catalyst carrier so that electrons gather after being powered on, ionize air to generate ions, and the catalyst is excited in situ by the ions and the high voltage is superimposed to synergistically excite the catalyst, further improving the catalytic decomposition efficiency of the catalyst, quickly catalytically decomposing odor molecules, and realizing the function of rapid purification and deodorization.

[0068] The present application also proposes a refrigerator, including:

[0069] A box shell;

[0070] An inner liner, which is arranged inside the box shell, and an accommodation space is formed inside the inner liner;

[0071] An air duct assembly, which is arranged at the rear side or the front side of the inner liner, and the air duct assembly is configured to form an air duct, and the air duct communicates with the accommodation space;

[0072] A purification device, which is arranged in the accommodation space or the air duct, and the purification device includes:

[0073] A housing, which forms a cavity and an air return opening and an air supply opening communicating with the cavity;

[0074] A power supply component, which is used to supply voltage;

[0075] A catalyst assembly, which is arranged in the cavity, and the catalyst assembly includes:

[0076] A catalyst carrier, which is provided with a porous structure to adsorb odor molecules in the air flow, and the catalyst carrier is arranged in the cavity;

[0077] A catalytic layer, which is arranged on the surface of the conductive catalyst carrier and is used to decompose odor molecules; at least one of the catalyst carrier and the catalytic layer is conductive, and the catalytic layer or / and the catalyst carrier is electrically connected to the power supply component to generate an electric field around the catalytic layer; a first convex structure is formed on the surface of the catalytic layer so as to ionize air to generate ions at the first convex structure;

[0078] An electrode assembly, which is disposed opposite to the catalyst carrier and is located on one side of the catalyst carrier close to or away from the air return opening. The electrode component is grounded or connected to the low-potential end of the catalyst carrier to form an electric field between the electrode component and the catalyst carrier;

[0079] A controller, configured to control a power supply component to provide a set voltage to the catalyst assembly, so as to form a potential difference between the catalyst carrier and the electrode assembly or between the catalytic layer and the electrode assembly, and then form a catalytic electric field around the catalytic layer;

[0080] Air flows into the housing through the air return opening and passes through the catalytic layer. The catalytic layer catalyzes and decomposes odor molecules in the air flow at least under the action of the catalytic electric field.

[0081] In the above solution, by connecting the electrode assembly and the catalyst assembly to the power supply component, the catalyst assembly is at the high-potential end and the electrode assembly is at the low-potential end, and an electric field is formed between the electrode assembly and the catalyst assembly; an electron concentration region is formed on the electrode assembly, and ions are generated by ionization in this region. The catalytic layer on the surface of the catalyst assembly efficiently catalyzes and decomposes odor molecules in the air flow under the synergistic action of ions and the electric field. The odor removal efficiency of the refrigerator is effectively improved. And ozone can be generated under certain conditions to sterilize the inside of the refrigerator. Description of the Drawings

[0082] The drawings described herein are used to provide a further understanding of the present invention, and constitute a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0083] Figure 1 is a schematic partial structure diagram of a refrigerator in an embodiment of the present disclosure;

[0084] Figure 2 is a partial exploded view of a refrigerator in an embodiment of the present disclosure;

[0085] Figure 3 is an exploded view of a purification device in an embodiment of the present disclosure;

[0086] Figure 4 is another exploded view of a purification device in an embodiment of the present disclosure;

[0087] Figure 5 is another exploded view of a purification device in an embodiment of the present disclosure;

[0088] Figure 6 is another exploded view of a purification device in an embodiment of the present disclosure

[0089] Figure 7 is Figure 6 an enlarged view of position A in

[0090] Figure 8 It is a schematic diagram of a partial structure of a purification device in an embodiment of the present disclosure;

[0091] Figure 9 is Figure 8 an enlarged view of position B in

[0092] Figure 10 It is a schematic diagram of the structures of a purification device and a protective housing in an embodiment of the present disclosure;

[0093] Figure 11 is Figure 10 a sectional view taken along the A-A position in

[0094] Figure 12 It is an exploded view of a purification device and a protective housing in an embodiment of the present disclosure;

[0095] Figure 13 It is a schematic diagram of a partial structure of a purification device in an embodiment of the present disclosure;

[0096] Figure 14 is Figure 13 a sectional view taken along the C-C position in

[0097] Figure 15 It is an exploded view of a purification device in another embodiment of the present disclosure;

[0098] Figure 16 It is an exploded view of a purification device in another embodiment of the present disclosure;

[0099] Figure 17 It is a hardware block diagram of a controller in an embodiment of the present disclosure;

[0100] Figure 18 It is the control logic of the purification function when there is only one preset voltage in the power supply component in an embodiment of the present disclosure;

[0101] Figure 19 It is the control logic of the purification function when the power supply component has two preset voltages in an embodiment of the present disclosure;

[0102] Figure 20 It is an oxygen molecule energy level transition curve;

[0103] Figure 21 It is an electron energy distribution curve in a plasma;

[0104] In the above figures:

[0105] Cabinet shell 1; Inner tank 2; Air duct assembly 3; Purification device 4; Housing 41; Purification fan 42; Power supply component 43;

[0106] Catalyst component 44; Mounting seat 45; Contact type elastic piece 46; Connecting part 461; Elastic component 462;

[0107] Electrode assembly 6; air duct baffle 47; protective housing 7; air return opening 48; air supply opening 49;

[0108] Protrusion 50; buckle 51; controller 21; bus 211; memory 212; processor 213;

[0109] Communication interface 214. Specific embodiments

[0110] The following will clearly and completely describe the technical solutions in the embodiments in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0111] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0112] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" 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 directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0113] Refer to Figure 1 In the refrigerator in the embodiment of the present application, it includes a cabinet 1. The cabinet 1 is used to form the external contour of the entire refrigerator. The cabinet 1 is a housing 41 structure with an opening at the front side, providing space for the installation of other components of the refrigerator.

[0114] The refrigerator includes a door body. The door body is arranged on the front side of the cabinet 1 and is used to open or close the accommodation space of the refrigerator. The cabinet 1 and the door body can be connected by a hinge, so that the door body can rotate around the axis of the hinge to realize the opening and closing of the door body, and then open or close the storage room.

[0115] The refrigerator includes an inner container 2. An accommodation space is formed inside the inner container 2. The inner container 2 includes a refrigerating inner container 2 and a freezing inner container 2. In some embodiments, a refrigerating chamber is formed in the refrigerating inner container 2, and a freezing chamber is formed in the freezing inner container 2.

[0116] It can be understood that multiple door bodies can be provided and correspondingly arranged for different types of storage chambers; or, multiple door bodies can also open and close a storage chamber simultaneously. The storage chambers of the refrigerator can be divided into a freezing chamber, a refrigerating chamber, a variable temperature chamber, etc. according to different refrigeration requirements.

[0117] In the embodiments of the present application, both the refrigerating inner container 2 and the freezing inner container 2 are installed in the cabinet shell 1. In some embodiments, the freezing inner container 2 is located below the refrigerating inner container 2.

[0118] There is a gap between the refrigerating inner container 2 and the freezing inner container 2, so that the refrigerating chamber and the freezing chamber are separated from each other, and the refrigerating chamber and the freezing chamber can be made not to affect each other without setting up cumbersome heat insulation and sealing.

[0119] In some embodiments, the refrigerator includes a storage drawer, which is arranged in the accommodation space. The storage drawer can be installed in the refrigerating chamber. In some embodiments, the storage drawer is installed in the freezing chamber.

[0120] In the embodiments of the present application, the refrigerator further includes an air duct assembly 3. In some embodiments, the air duct assembly 3 is installed on the rear side of the rear wall of the inner container 2. The air duct assembly 3 is configured to form an air duct. The air duct communicates with the accommodation space to realize the air flow circulation of the refrigerator.

[0121] In some embodiments, referring to Figure 2 , the air duct assembly 3 is installed on the front side of the rear wall of the inner container 2. The air duct assembly 3 is configured to form an air duct. The air duct communicates with the accommodation space to realize the air flow circulation of the refrigerator.

[0122] In some embodiments, the air duct assembly 3 further forms an air inlet and an air outlet. The air flow in the air duct enters the accommodation space through the air inlet and then flows back through the air outlet, realizing the circulation of the air flow inside the refrigerator.

[0123] In some embodiments, the refrigerator includes a purification device 4. The purification device 4 is installed in the accommodation space. The odor purification device can directly sterilize and remove odors from the air in the accommodation space.

[0124] In some embodiments, in order to ensure the overall aesthetics of the accommodation cavity. A protective housing 7 is provided at the installation position of the purification device 4. In some embodiments, the protective housing 7 is provided on the top wall of the accommodation space.

[0125] The protective housing 7 is provided with air vents at the positions of the air return port 48 and the air supply port 49 for installing the purification device 4, so as to ensure the normal flow of air and ensure the purification effect.

[0126] In some embodiments, the purification device 4 of the refrigerator is installed in the air duct. The purification device 4 can sterilize the air in the air duct and the accommodation space and remove odors.

[0127] In some embodiments, the purification device 4 of the refrigerator is installed in the storage drawer. The purification device 4 is used to remove odors or sterilize the storage drawer.

[0128] In some embodiments, the refrigerator further includes a controller 21. The controller 21 is used to send instructions to the refrigerator to control the working process of the refrigerator.

[0129] The controller 21 is used to coordinate the operation of the entire refrigerator. This includes receiving user instructions, operating in refrigeration mode, heating mode, blowing mode, shutdown mode, cleaning mode, self-cleaning mode, etc., and uploading the working status of the refrigerator to the cloud.

[0130] The controller 21 includes a memory 212. The memory 212 may include a high-speed random access memory 212 (RAM, Random Access Memory). It may also include a non-volatile memory 212 (NVM, NonVolatile Memory).

[0131] For example, at least one disk memory 212. The memory 212 is used to store programs.

[0132] Refer to Figure 17 , the indoor controller 21 includes a communication interface 214. The communication interface 214 is used to implement communication with related components.

[0133] The communication interface of the controller 21 is used to implement communication with the voltage output component and the refrigeration module 33. So that after receiving the corresponding electric control signal, different components can be controlled to perform corresponding actions. For example, when the cleaning mode is executed, the power supply component 43 is controlled to act.

[0134] The controller 21 includes a processor 213. The processor 213 is used to execute the executable module stored in the memory 212, such as a computer program, and the code of the computer program can be in the form of source code, object code, executable file or some other forms.

[0135] The controller 21 includes a bus 211. The bus 211 is used to connect the communication interface 214 and the processor 213. The bus 211 can be an ISA bus 211, a PCI bus 211 or an EISA bus 211, etc.

[0136] The controller 21 includes at least one software function module that can be stored in the memory 212 in the form of software or firmware.

[0137] In this application, after receiving the execution instruction, the processor 213 executes a program to perform relevant control logic regarding the purification device 4 in the refrigerator.

[0138] It should be noted that in some embodiments, the cleaning modes in the present disclosure include a sterilization mode and a deodorization mode. Among them, the deodorization mode is to utilize an electric field and / or an ion catalytic catalyst assembly 44 to decompose odor molecules, and clean and deodorize the interior of the refrigerator.

[0139] In some embodiments, the purification device 4 adopts a basic structure in which a catalyst block is arranged between two electrode plates. The high-voltage electric field generated by the two electrode plates is used to excite the catalyst to achieve rapid catalytic decomposition of odor molecules.

[0140] However, since the basic structure in the above embodiments includes opposed electrodes, a relatively high concentration of ozone will be generated during discharge, which is higher than the human sensory threshold. Therefore, the voltage can only be set below the discharge threshold to excite the catalyst through the high-voltage electric field.

[0141] This will result in the need to balance the relationship between the excitation effect and the ozone concentration released, so as to ensure the catalytic efficiency of the catalyst while reducing ozone generation.

[0142] In the above, the principle of ozone generation in the electrode plate - catalyst - electrode plate structure is explained as follows:

[0143] In 1987, Eliasson et al. established a microdischarge model for ozone generation by high-voltage discharge using quantum mechanics theory, which promoted the theoretical and experimental research on ozone generation by high-voltage discharge. The microdischarge electric field intensity determines the ozone generation and ozone concentration by high-voltage discharge.

[0144] In high-voltage discharge, the discharge electric field intensity in the discharge gap can be expressed by the following formula

[0145]

[0146] Among them, is the peak voltage, l g is the discharge gap, l d is the dielectric thickness, ε d is the relative dielectric constant of the gas, ε g is the relative dielectric constant of the dielectric.

[0147] From the above expression, it can be seen that the discharge electric field intensity E g is proportional to the peak voltage and inversely proportional to the discharge gap l g inversely.

[0148] In the discharge gap, electrons obtain energy from the applied electric field and almost all of it can be transferred to heavy particles. At this time, the expression formula for the energy obtained by electrons in the non-equilibrium plasma is:

[0149]

[0150] where n e is the electron concentration, m e , m h are the masses of electrons and heavy particles respectively, k is the Boltzmann constant, υ e is the electron collision frequency, and E g is the discharge electric field strength.

[0151] As can be seen from the above, the energy obtained by electrons in the plasma from the applied electric field is related to the electric field strength and gas concentration. The electric field strength and gas concentration play a decisive role in the amount of energy obtained by electrons in the plasma.

[0152] The reduced electric field strength E / n (unit: Td, 1 Td = 10-17 V·cm2) is used to characterize the gas discharge intensity and ionization intensity. The discharge of the purification device 4 used in household appliances works under atmospheric pressure conditions. Therefore, increasing the discharge electric field strength can obtain high-energy electrons with high energy density, and then generate ozone.

[0153] According to Eliasson's ozone microdischarge model, the reduced electric field strength E / n (E is the electric field strength, n is the gas concentration, unit: Td) for generating ozone during high-voltage discharge is about 100 Td, and the corresponding average electron energy is about 5 eV. When the reduced electric field strength E / n reaches 300 Td, most electron energies reach the oxygen molecule dissociation threshold of 8.4 eV, and the ozone concentration generated by high-voltage discharge will increase significantly.

[0154] DBD discharge, corona discharge, etc. have strongly conductive counter electrodes. Electrons in the discharge gap will be accelerated by obtaining energy under the action of the applied electric field. When these electrons collide inelastically with oxygen molecules, the electrons transfer energy to the oxygen molecules. After the gas is excited, an electron avalanche occurs.

[0155] At the same time, a lot of space charges appear during the process of avalanche electrons passing through the electrode gap. The intrinsic electric field generated by these space charges is superimposed on the applied electric field, further accelerating the avalanche electrons. Thus, they quickly pass through the electrode gap and generate a conductive channel. At the same time, during this process, some excited atoms or molecules will return to the ground state and generate photons. The generated photons can also promote the ionization situation in the discharge gap, thereby accelerating the gas breakdown and the establishment of the conductive channel.

[0156] The process of establishing this conductive channel corresponds to a "microdischarge" process. Such microdischarges are filamentous at normal temperature and pressure and generally last from a few nanoseconds to more than a dozen nanoseconds. In the high-voltage electric field excitation catalyst purification scheme with a catalyst block structure sandwiched between two opposed electrodes, since the catalyst block is designed as a through honeycomb for ventilation and purification, the microdischarge cannot be restricted like the complete insulating medium in normal DBD discharges, resulting in a rapid increase in the spatial field strength, and even exceeding the spatial breakdown field strength. The reduced electric field strength E / n easily reaches above 100 Td, generating ozone.

[0157] The following are the plasma reaction processes and specific mechanisms for generating ozone during the discharge process: The main processes of oxygen molecule, ozone molecule decomposition, and dissociation ionization are shown by the following equations:

[0158] O2(X 3 ∑g - ) + e → O2(A 3 ∑u + ) + e → O( 3 P) + O( 3 P) + e

[0159] O2(X 3 ∑g - ) + e → O2(B 3 ∑u - ) + e → O( 3 P) + O( 1 P) + e

[0160] 02(X 3 ∑g - ) + e → O2(A 2 ∏u) + e → O( 3 P) + O+( 4 S 0 ) + 2e

[0161]

[0162] O3( 3 A2 + 1A2) + e → O2(a) + O( 1 D)

[0163] Among them, M is the third party participating in the collision. In oxygen, it can be O, O2, or O3, and in air, it can also be N and N2. is the instantaneously existing excited-state ozone molecule, which is the initial product of the three-body recombination reaction.

[0164] Refer to Figure 20 The oxygen molecule energy level transition curve shown to illustrate the change process of oxygen. Among them, the excitation process of the accelerated electron colliding with the oxygen atom has an extremely short time, almost a vertical excitation process. From O2(X3 ∑g - ) Ground state excitation to O2(A 3 ∑u + )、O2(C 3 Δu), O2(C 1 ∑u - ) state, its vertical excitation energy is 6.1 eV, which is a forbidden transition. When the excitation energy reaches above 8.4 eV, it transitions to O2(B 3 ∑u - ) state. Only when the electrons obtain energy greater than 8.4 eV from the discharge electric field, is it possible to decompose oxygen molecules, decompose and ionize them, and decompose and attach them to form O( 3 P), O( 1 D), O + ( 4 S 0 ), O + ( 1 S 0 ), etc. The amount of energy obtained by electrons from the external electric field will determine the intensity of the decomposition, decomposition ionization, and decomposition attachment of oxygen molecules, and also determine the concentration of ozone generated.

[0165] Refer to Figure 21 the electron energy distribution curve in the plasma shown. Among them, in line 1, E / n = 100 Td, in line 2, E / n = 300 Td, and in line 3, E / n = 800 Td. The decomposition and ionization energy of ozone molecules is 2 eV. Therefore, electrons with energies of 2 - 8.4 eV are of no use for ozone generation. This part of the energy seems to be specifically used to decompose ozone. The occupancy of electrons with this part of the energy should be minimized in order to obtain a high concentration of ozone.

[0166] As can be seen from the above, when the applied voltage is too high and the generated electric field strength is too large, this is the reason for the generation of ozone between the electrode plates. During the high-voltage discharge process, the presence or absence of an opposing electrode, and the distance between the opposing electrode and the discharge electrode, will directly affect the electric field strength.

[0167] Therefore, in this application, a structure of a purification device 4 is first proposed, in which no opposing electrode is provided. At this time, when the discharge electrode is at a certain discharge high voltage and there is no opposing electrode, the ground can be understood as the zero potential end. At this time, the discharge electrode is very far from the zero potential end, and the reduced electric field strength is lower than 100 Td required for ozone generation. Therefore, no ozone is generated.

[0168] The following describes the specific setting scheme of not providing an opposing electrode in the purification device 4 in the embodiments of this application.

[0169] In this embodiment, refer to Figure 3, the purification device 4 includes a housing 41. The housing 41 is used to form the outer contour of the purification device 4. A cavity for accommodating various components is formed inside the housing 41.

[0170] The housing 41 includes a main body and a cover plate. Refer to Figure 3 , a protrusion 50 is provided on the main body, and a buckle 51 is provided on the cover plate. The protrusion 50 and the buckle 51 are correspondingly arranged so that the main body and the cover plate are snap-connected and a cavity is formed inside.

[0171] An air return port 48 and an air supply port 49 are formed on the housing 41. The air return port 48 and the air supply port 49 are communicated with the cavity. Airflow enters the cavity through the air return port 48 and flows out of the housing 41 through the air supply port 49.

[0172] In some embodiments, an air duct baffle 47 is provided inside the cavity. Refer to Figure 3 , the air duct baffle 47 extends from one side of the catalyst assembly 44 to one side of the purification fan 42. The air duct baffle 47 and the inner wall of the housing 41 opposite to it jointly define the internal air duct of the purification device 4.

[0173] In some embodiments, the purification device 4 includes a purification fan 42. The purification fan 42 is installed in the cavity. Under the action of the purification fan 42, the air flow velocity is accelerated, so that the air flow enters the cavity through the air return port 48 and then enters the accommodation space through the air supply port 49, improving the purification efficiency.

[0174] In some embodiments, the purification fan 42 is set as a centrifugal fan. In some embodiments, the purification fan 42 can also be set as an axial flow fan, a cross-flow fan, etc.

[0175] In some embodiments, the purification device 4 includes a power supply component 43. The power supply component 43 is used to provide voltage. The power supply component 43 can be used to provide voltage for the purification fan 42 to ensure the stable operation of the purification fan 42. In some embodiments, the power supply component 43 can also be used to generate an electric field to improve the catalytic efficiency.

[0176] In some embodiments, the purification device 4 includes a power supply component 43. Refer to Figure 3 , the power supply component 43 is installed inside the housing 41. The power supply component 43 is at least used to provide voltage for the components inside the purification device 4.

[0177] In some embodiments, the power supply component 43 is installed outside the housing 41. A wire passing hole is provided on the housing 41. The power supply component 43 is connected to the components that need to be provided with voltage through wires.

[0178] In some embodiments, the purification device 4 includes a catalyst assembly 44. The catalyst assembly 44 is installed in a cavity. The catalyst assembly 44 is electrically connected to the power supply component 43 to generate an electric field at least around the catalyst assembly 44. After applying the high voltage output by the power supply component 43 to the catalyst assembly 44, the catalyst is excited by the high voltage to improve the catalytic decomposition efficiency of the catalyst, quickly catalytically decompose the adsorbed odor molecules, and achieve the function of rapid purification and odor removal.

[0179] In some embodiments, the catalyst assembly 44 includes a catalyst carrier and a catalytic layer provided on the surface of the catalyst carrier. The catalyst carrier is disposed in the cavity. At least one of the catalyst carrier and the catalytic layer is electrically conductive, and the catalytic layer or / and the catalyst carrier is electrically connected to the power supply component to generate an electric field around the catalytic layer.

[0180] In some embodiments, the catalyst carrier is configured as a porous structure to facilitate adsorption of odor molecules in the air flow.

[0181] In some embodiments, the catalyst carrier is configured as a porous honeycomb catalyst carrier.

[0182] In some embodiments, a convex structure is formed on the surface of the catalyst assembly 44. When the catalyst assembly 44 is connected to high voltage electricity, electron collection occurs at the position of the convex structure, and air discharge is carried out to ionize air to generate ions.

[0183] In some embodiments, the surface of the catalytic layer is configured as a non-smooth surface to facilitate ionization of air to generate ions after being powered on.

[0184] In some embodiments, a first convex structure is formed on the surface of the catalytic layer. When the catalyst assembly 44 is connected to high voltage electricity, air discharge occurs at the first convex structure to ionize air to generate ions. Among them, the first convex structure is a microscopic convex formed on the surface of the catalyst carrier and the inner surface of the pores of the catalyst carrier. It is difficult to observe directly with the naked eye, and the microscopic structure of the catalyst assembly can be observed through a display.

[0185] The first convex structure forms a catalyst island group on the surface of the porous honeycomb catalyst carrier and the inner surface of the honeycomb pores, realizing the connectivity distribution of the catalyst. After applying high voltage electricity, high voltage discharge is formed on the surface of the catalyst carrier, inside the honeycomb pores, and on the surface of the catalyst. The ions generated by the discharge are in close contact with the catalyst, in-situ exciting the catalyst and superimposing the high voltage to synergistically excite the catalyst to further improve the catalytic decomposition efficiency of the catalyst. Quickly catalytically decompose the adsorbed odor molecules, and achieve the function of rapid purification and odor removal. Among them, the above-mentioned catalyst island group is a structure formed by the aggregation of catalyst particles on the surface of the coating position.

[0186] The surface of the catalytic layer has a first convex structure to form a non-smooth surface on the surface of the catalytic layer, and electrons can be collected at the non-smooth positions after being powered on to ionize air to generate ions.

[0187] In some embodiments, the controller 21 is configured to control the power supply component 43 to supply voltage to the catalyst assembly 44, so as to form a catalytic electric field around the catalytic layer, and the first convex structure ionizes air to generate ions.

[0188] When the air flow enters the cavity through the air return opening and flows through the catalytic layer, the catalytic layer catalytically decomposes the odor molecules adsorbed by the catalyst carrier under the synergistic action of the catalytic electric field and ions.

[0189] In some embodiments, the controller 21 is configured to control the purification fan to operate to accelerate the air flow velocity when using the catalyst assembly 44 to catalytically decompose odor molecules.

[0190] In some embodiments, the catalyst assembly 44 includes a conductive catalyst carrier having a porous structure to adsorb odor molecules in the air. The conductive catalyst carrier forms the catalyst carrier structure of the catalyst assembly 44. The conductive catalyst carrier is disposed in the cavity, and the conductive catalyst carrier is electrically connected to the power supply component 43.

[0191] In some embodiments, the conductive catalyst carrier may be set as a porous honeycomb conductor. Exemplarily, the conductive catalyst carrier is set as porous honeycomb activated carbon.

[0192] In this embodiment, the catalyst assembly 44 includes an insulating catalytic layer. The catalytic layer is coated on the surface of the conductive catalyst carrier, and a plurality of first convex structures are formed on the surface of the insulating catalytic layer for decomposing odor molecules.

[0193] In practical applications, setting the catalyst carrier to be conductive and the catalytic layer to be non-conductive has relatively low process requirements, is easy to implement, and is also easy to promote.

[0194] In some embodiments, the power supply component 43 supplies voltage to the conductive catalyst carrier, so as to form a potential difference between the conductive catalyst carrier and the ground, and a catalytic electric field is generated around the conductive catalyst carrier.

[0195] When the air flow enters the cavity through the air return opening 48 and flows through the insulating catalytic layer, the insulating catalytic layer catalytically decomposes the adsorbed odor molecules at least under the action of the catalytic electric field.

[0196] In some embodiments, the insulating catalytic layer may be set as metal oxide, silicon-based and carbon-based semiconductor materials, C3N4.

[0197] In some embodiments, the catalyst assembly 44 is set as a catalyst block with a conductive catalyst coated on the surface.

[0198] In some embodiments, the catalyst assembly 44 includes an insulating catalyst carrier having a porous structure to adsorb odor molecules in the air. The insulating catalyst carrier may be provided as a porous honeycomb insulator. Exemplarily, the porous honeycomb insulator may be one or a combination of porous honeycomb ceramics, porous honeycomb silicon carbide, porous honeycomb aluminum titanate, porous honeycomb zirconia, and porous honeycomb silicon nitride.

[0199] In this embodiment, the surface of the insulating body is coated with a conductive catalytic layer. A number of first convex structures are formed on the surface of the conductive catalytic layer. In some embodiments, the conductive catalytic layer is provided as a metal elemental catalyst.

[0200] By providing a conductive catalytic layer on the surface of the insulating catalyst carrier, the conductive catalytic layer is in direct contact with the air for ionization, improving the efficiency of the catalyst assembly in ionizing air to generate ions, and thereby improving the efficiency of the catalytic layer in catalytically decomposing odor molecules.

[0201] In some embodiments, the power supply component 43 provides a voltage to the conductive catalytic layer to form a potential difference between the conductive catalytic layer and the ground, and a catalytic electric field is generated around the conductive catalytic layer;

[0202] When the air flow enters the cavity through the air return opening 48 and flows through the conductive catalytic layer, the conductive catalytic layer catalytically decomposes the odor molecules adsorbed by the insulating catalyst carrier at least under the action of the catalytic electric field.

[0203] In some embodiments, the catalyst assembly 44 includes a conductive catalyst carrier having a porous structure to adsorb odor molecules in the air. In some embodiments, the conductive catalyst carrier may be provided as a porous honeycomb conductor. Exemplarily, the conductive catalyst carrier is provided as porous honeycomb activated carbon.

[0204] In this embodiment, the surface of the conductive catalyst carrier is coated with a conductive catalytic layer. A number of first convex structures are formed on the surface of the conductive catalytic layer. The conductive catalytic layer may be provided as a conductive catalyst.

[0205] By making both the catalyst carrier and the catalytic layer conductive, the situation where the ionization of the catalyst assembly is affected when one of them has poor conductivity is avoided. At the same time, the ability of the catalyst assembly to decompose odor molecules can also be improved.

[0206] In some embodiments, the power supply component 43 provides a voltage to the conductive catalytic layer and the conductive catalyst carrier to form a potential difference between the conductive catalytic layer and the ground, and a catalytic electric field is generated around the conductive catalytic layer;

[0207] When the air flow enters the cavity through the air return opening 48 and flows through the conductive catalytic layer, the conductive catalytic layer catalytically decomposes the odor molecules adsorbed by the insulating catalyst carrier at least under the action of the catalytic electric field.

[0208] In some embodiments, the conductive catalytic layer can also be set as a mixture of a conductive catalyst and an insulating catalyst. Exemplarily, the conductive catalyst is set as a metal single-element catalyst, and the insulating catalyst is set as a metal oxide and / or C3N4.

[0209] In some embodiments, the catalyst that composes the catalytic layer is doped in the catalyst carrier and integrally processed and formed with the catalyst carrier, made into a porous honeycomb shape, and the entire catalyst assembly has electrical conductivity.

[0210] After applying a high voltage to the catalyst assembly 44, the catalyst is excited by the high voltage to improve the catalytic decomposition efficiency of the catalyst, quickly catalytically decompose the adsorbed odor molecules, and achieve the function of rapid purification and deodorization.

[0211] After applying a high voltage to the conductive catalyst assembly 44, the catalytic decomposition efficiency of the catalytic layer is improved by exciting the catalytic layer with the high voltage; after applying the high voltage, the catalyst assembly 44 can also discharge to generate ions, and the catalytic layer is excited in situ by the ions and the high voltage is superimposed to synergistically excite the catalytic layer to further improve the catalytic decomposition efficiency of the catalytic layer, quickly catalytically decompose the odor molecules, and achieve the function of rapid purification and deodorization.

[0212] In some embodiments, the catalyst that composes the catalytic layer is doped in the body and integrally processed and formed with the body, made into a porous honeycomb shape, and the entire catalyst assembly has electrical conductivity.

[0213] In some embodiments, the convex structure is formed by the self-structure of the catalyst carrier. A second convex structure is formed on the outer surface of the catalyst carrier. The catalytic layer is coated on the surface of the catalyst carrier. After the catalyst assembly 44 is powered on, electrons gather at the position of the second convex structure to facilitate the ionization of air to generate ions.

[0214] By setting a second convex structure on the surface of the catalyst carrier, electrons gather after power-on to ionize air to generate ions. The catalyst is excited in situ by the ions and the high voltage is superimposed to synergistically excite the catalyst, further improving the catalytic decomposition efficiency of the catalyst, quickly catalytically decompose the odor molecules, and achieve the function of rapid purification and deodorization.

[0215] In some embodiments, the catalyst assembly 44 is arranged at a position close to the air supply outlet of the purification fan.

[0216] In some embodiments, the catalyst assembly 44 is arranged at a position close to the air return outlet of the purification fan. Under the conditions of the same structure, the honeycomb pore diameter and density of the catalyst assembly 44, the air resistance can be effectively reduced and the catalytic purification efficiency can be improved. The power supply component 43 provides a high voltage to the catalyst assembly 44 to excite the catalyst assembly 44 to quickly catalytically decompose the adsorbed odor molecules and achieve the function of rapid odor removal.

[0217] In some embodiments, the controller 21 is configured to control the power supply component 43 to supply voltage to the conductive catalyst carrier, so as to form a catalytic electric field around the conductive catalyst carrier;

[0218] When the air flow enters the cavity through the air return port 48 and flows through the catalytic layer, the catalytic layer catalytically decomposes the odor molecules in the air flow under the action of the catalytic electric field.

[0219] In the above solution, the catalyst assembly 44 is connected to the power supply component 43, so that the catalyst assembly 44 is at the high potential end and the ground is at the low potential end, and an electric field is formed between the catalyst assembly 44 and the ground; the catalytic layer on the surface of the catalyst assembly 44 catalytically decomposes the odor molecules in the air flow efficiently under the action of the electric field. The odor removal efficiency of the refrigerator is effectively improved.

[0220] In the embodiment of the present application, the power supply component 43 can set a preset high voltage. The preset high voltage is set in advance. The specific voltage value is not limited in the present application.

[0221] In some embodiments, the controller 21 is configured to, when receiving the first signal, control the power supply component 43 to supply the first voltage to the catalyst assembly 44. At this time, the catalyst assembly 44 is used as the high potential end and the ground is used as the zero potential end, and a catalytic electric field is formed between the catalyst assembly 44 and the ground;

[0222] The air flow enters the housing 41 through the air return port 48 and flows through the catalytic layer, and the catalytic layer catalytically decomposes the odor molecules in the air flow under the action of the catalytic electric field.

[0223] It can be known that the first signal is a general purification instruction. In the above solution, mainly the high voltage and the corresponding high-voltage electric field excite the catalyst at the first voltage, improve the catalytic decomposition efficiency of the catalyst, and realize the function of rapid purification and odor removal.

[0224] It can be known that the output voltage of the power supply component 43 is adjusted according to different needs of the user to control the catalytic effect of the catalyst assembly 44 and the purification function.

[0225] In some embodiments, the power supply component 43 can set two preset high voltages. Specifically, they are the first voltage and the second voltage. The specific voltage values are not limited in the present application. However, it is required that the second voltage > the first voltage.

[0226] In some embodiments, the controller 21 is configured to, when receiving the second signal, control the power supply component 43 to supply the second voltage to the catalyst assembly 44, where the second voltage is greater than the first voltage. At this time, a catalytic electric field is formed between the catalyst assembly 44 and the ground, and the catalyst assembly 44 discharges to generate ions;

[0227] Airflow enters the housing 41 through the air return opening 48 and flows through the catalytic layer. The catalytic layer catalytically decomposes the odor molecules in the airflow under the synergistic action of the catalytic electric field and ions.

[0228] In the above solution, under high pressure, the catalyst assembly 44 generates ions, and the catalytic layer catalytically decomposes the odor molecules in the airflow efficiently under the synergistic action of ions and the electric field.

[0229] It can be known that the second signal is a strong purification instruction. Under the second voltage, the catalyst assembly 44 can discharge to generate ions (including electrons). At this time, the catalyst can be further excited by superimposing a high voltage on the ions to further improve the catalytic efficiency of the catalyst and further improve the purification and deodorization efficiency.

[0230] In this embodiment, after generating ions, the catalyst can be directly excited in situ. The ion energy and the number of ions are higher than those of the ions generated by the solid electrode and then diffused to the catalyst assembly 44 through the air circulation. Under the same conditions, the catalytic efficiency of the excited catalyst is higher.

[0231] In this embodiment, the technical solution has no counter electrode. Therefore, ozone will not be generated at a relatively high voltage or the ozone concentration generated is lower than the human sensory threshold, and it will not cause negative impacts on the health of users due to ozone. The purification device 4 can operate continuously to achieve continuous and rapid purification and deodorization.

[0232] In addition, the ions generated by the discharge of the catalyst assembly 44 are released into the internal space of the refrigerator storage compartment through the air circulation, realizing the active killing of the attached microorganisms on the surface of the food ingredients and the surface of the refrigerator compartment, and can also kill the floating microorganisms in the refrigerator storage space, realizing the function of efficient sterilization and virus removal.

[0233] In some embodiments, the controller 21 is configured to control the purification fan 42 to operate to accelerate the airflow in the housing 41 when receiving the first signal or the second signal;

[0234] Airflow enters the housing 41 through the air return opening 48 and flows through the catalyst assembly 44. The catalytic layer catalytically decomposes the odor molecules in the airflow at least under the action of the catalytic electric field.

[0235] In the above solution, by controlling the operation of the purification fan 42, the airflow circulation is improved to improve the purification efficiency.

[0236] In some embodiments, the refrigerator further includes a door detection device. The door detection device is used to detect whether the door is opened or closed and send the detection signal to the controller 21.

[0237] In some embodiments, the controller 21 is configured to judge whether the door is in the closed state before controlling the power supply component 43 to supply voltage to the conductive catalyst carrier. If it is in the closed state, then control the power supply component 43 to supply power.

[0238] In the above solution, before the refrigerator performs the odor removal or sterilization process, the sealing of the accommodation space inside the cabinet 1 is ensured to avoid introducing odor molecules or bacteria from the outside, and the efficiency of odor removal or sterilization is guaranteed.

[0239] In some embodiments, the controller 21 is configured to control the power supply component 43 to stop power supply if the door body is detected to be opened during the period when the power supply component 43 supplies voltage to the conductive catalyst carrier.

[0240] In the above solution, during the odor removal or sterilization process of the refrigerator, the sealing of the accommodation space inside the cabinet 1 is ensured to avoid introducing odor molecules or bacteria from the outside, and the efficiency of odor removal or sterilization is guaranteed.

[0241] In some embodiments, the refrigerator further includes a drawer detection device. The drawer detection device is used to detect whether the storage drawer is opened or closed, and send the detection signal to the controller 21.

[0242] The controller 21 is configured to determine whether the storage drawer is in the closed state before controlling the power supply component 43 to supply voltage to the conductive catalyst carrier. If it is in the closed state, the controller 21 controls the power supply component 43 to supply power.

[0243] In the above solution, before the refrigerator performs the odor removal or sterilization process, the sealing of the storage drawer is ensured to avoid introducing odor molecules or bacteria from the outside or outside the storage drawer, and the efficiency of odor removal or sterilization is guaranteed.

[0244] In some embodiments, the controller 21 is configured to control the power supply component 43 to stop power supply if the storage drawer is detected to be opened during the period when the power supply component 43 supplies voltage to the conductive catalyst carrier.

[0245] In the above solution, during the odor removal or sterilization process of the refrigerator, the sealing of the storage drawer is ensured to avoid introducing odor molecules or bacteria from the outside, and the efficiency of odor removal or sterilization is guaranteed.

[0246] Refer to Figure 18 , and illustrate the control logic of the purification function when the power supply component 43 has only one preset voltage.

[0247] Judge whether a purification instruction is received (S101);

[0248] In step S101, if no purification instruction is received, step S102 is executed and the power supply component 43 does not supply power;

[0249] In step S101, if a purification instruction is received, step S103 is executed to judge whether the door body or the storage drawer is closed;

[0250] In step S103, if the door body and the storage drawer are not closed, then step S103 is executed;

[0251] It can be known that when the number of times of executing S103 reaches the set number of times, an alarm can be given to remind the user.

[0252] In step S103, if the door body and the storage drawer are closed, then step S104 is executed, the power supply component 43 supplies power, the power supply component 43 outputs a voltage to the catalyst component 44, and the purification fan 42 runs.

[0253] Determine whether the refrigerator door is opened or the storage drawer is opened (S105);

[0254] In step S105, if the refrigerator door is opened or the storage drawer is opened, then step S106 is executed, and the purification device 4 is powered off.

[0255] In step S105, if the refrigerator door is not opened or the storage drawer is not opened, then step S105 is executed.

[0256] In step S104, the power supply circuit of the purification device 4 is connected, the purification fan 42 runs, and the power supply component 43 supplies power to the catalyst component 44 according to a preset voltage. The catalyst component 44 does not discharge and does not generate ions, and only the catalytic layer is excited by a high voltage to improve the catalytic efficiency. The purification device 4 runs continuously to achieve the function of purification and odor removal.

[0257] During the purification process, it is monitored throughout whether the refrigerator door is opened or the storage drawer is opened. If it is detected that the refrigerator door is opened or the storage drawer is opened, the refrigerator stops supplying power to the purification device 4, reducing continuous pollution caused by internal non-closure, and thus reducing the purification efficiency.

[0258] Refer to Figure 19 , and illustrate the control logic of the purification function when the power supply component 43 has two preset voltages.

[0259] Determine whether a purification instruction is received (S201);

[0260] In step S201, if no purification instruction is received, then step S202 is executed to determine whether a sterilization instruction is received;

[0261] In step S201, if a purification instruction is received, then step S203 is executed to determine whether the door body is closed or the storage drawer is closed;

[0262] In step S203, if the door body and the storage drawer are not closed, then step S203 is executed;

[0263] It can be known that when the number of times of executing S203 reaches the set number of times, an alarm can be given to remind the user.

[0264] In step S203, if the door body and the storage drawer are closed, then step S204 is executed to determine whether it is strong purification and deodorization;

[0265] In step S204, if it is strong purification and deodorization, then step S212 is executed, the power supply component 43 supplies power, the power supply component 43 outputs a second voltage to the catalyst component 44, and the purification fan 42 runs.

[0266] If strong purification and deodorization is received, the power supply component 43 supplies power to the catalyst component 44 according to the second voltage (the second voltage > the first voltage). The catalyst component 44 discharges to generate a large number of ions, and the catalyst is further excited by the superposition of ions and high voltage to further improve the catalytic efficiency and further improve the purification and deodorization efficiency. And only the discharge scheme of the catalyst component 44 connected to high voltage has no counter electrode and does not generate ozone or generates ozone concentration lower than the human sensory threshold, and the purification device 4 can run continuously to achieve continuous and rapid purification and deodorization.

[0267] Judge whether the refrigerator door is opened or the storage drawer is opened (S205);

[0268] In step S205, if the refrigerator door is opened or the storage drawer is opened, then step S206 is executed to cut off the power supply of the purification device 4.

[0269] In step S205, if the refrigerator door is not opened or the storage drawer is not opened, then step S205 is executed.

[0270] In step S204, if there is no strong purification and deodorization, then step S213 is executed, the power supply component 43 supplies power, the power supply component 43 outputs a first voltage to the catalyst component 44, and the purification fan 42 runs.

[0271] If strong purification and deodorization is not received, the power supply component 43 supplies power to the catalyst component 44 according to the first voltage (the first voltage < the second voltage). The catalyst component 44 does not discharge and does not generate ions, and only the catalyst is excited by high voltage to improve the catalytic efficiency of the catalyst, realizing the purification and deodorization function and the purification device 4 can run continuously.

[0272] During the execution of step S2013, judge whether the refrigerator door is opened or the storage drawer is opened (S214);

[0273] In step S214, if the refrigerator door is opened or the storage drawer is opened, then step S215 is executed to cut off the power supply of the purification device 4.

[0274] In step S214, if the refrigerator door is not opened or the storage drawer is not opened, then step S214 is executed.

[0275] In step S202, if the sterilization instruction is not received, then step S207 is executed and the purification device 4 is not powered.

[0276] In step S202, if a sterilization instruction is received, step S208 is executed to determine whether to close the door or the storage drawer.

[0277] In step S208, if the door and the storage drawer are not closed, step S208 is executed.

[0278] In step S208, if the door and the storage drawer are closed, step S209 is executed. The power supply component 43 supplies power, the power supply component 43 outputs a second voltage to the catalyst component 44, and the purification fan 42 runs.

[0279] In step S209, the power supply circuit of the purification device 4 is turned on, the purification fan 42 runs, and the power supply component 43 outputs a second voltage to supply power to the catalyst component 44. The catalyst component 44 discharges to generate a large number of ions, which are released into the accommodation space of the refrigerator by the air circulation, killing the microorganisms on the surface of the food materials and the surface of the refrigerator storage compartment, and can also kill the floating microorganisms in the accommodation space, realizing the efficient sterilization function.

[0280] And since no ozone is generated in the discharge scheme where only the catalyst component 44 is connected to the high voltage, the purification device 4 can operate continuously. The catalyst block adsorbs the floating bacteria in the air through the air circulation and kills them through high-voltage discharge, further improving the efficiency of removing floating bacteria.

[0281] During the execution of step S209, it is judged whether the refrigerator door is opened or the storage drawer is opened (S210).

[0282] In step S210, if the refrigerator door is opened or the storage drawer is opened, step S211 is executed to cut off the power supply of the purification device 4.

[0283] In step S210, if the refrigerator door is not opened or the storage drawer is not opened, step S210 is executed.

[0284] In steps S212, S213, and S2099, the power supply circuit of the purification device 4 is turned on, the purification fan 42 runs, and the power supply component 43 supplies power to the catalyst component 44 according to a preset voltage. The catalyst component 44 does not discharge and does not generate ions, and only improves the catalytic efficiency by exciting the catalytic layer with high voltage. The purification device 4 operates continuously to realize the purification and deodorization function.

[0285] During the purification or sterilization process, it is monitored throughout whether the refrigerator door is opened or the storage drawer is opened. If it is detected that the refrigerator door is opened or the storage drawer is opened, the refrigerator stops supplying power to the purification device 4, reducing continuous pollution caused by internal non-closure, thereby reducing the purification efficiency.

[0286] In some embodiments, the refrigerator further includes an odor detection device, which is used to detect the concentration of odor molecules in the accommodation space or the storage drawer of the refrigerator so as to control whether to perform odor purification operation. The odor detection device is electrically connected to the controller 21. The odor detection device detects the concentration of odor molecules and transmits the data to the controller 21.

[0287] In some embodiments, when the concentration of odor molecules reaches a preset concentration value, the purification device 4 is controlled to work and perform the purification function.

[0288] In some embodiments, referring to Figure 7-8 , the purification device 4 includes a mounting seat 45. The mounting seat 45 is arranged inside the housing 41 and is used to mount the catalyst component 44.

[0289] In some embodiments, the purification device 4 includes a contact elastic sheet 46. The contact elastic sheet 46 is arranged on one side of the mounting seat 45 and is used to connect the power supply component 43 and the catalyst component 44 so that the catalyst component 44 can receive the voltage provided by the power supply component 43 and the catalyst component 44 can form an electric field with the electrode assembly 6.

[0290] In some embodiments, the contact elastic sheet 46 includes a connecting portion 461. The connecting portion 461 is connected to the power supply component 43.

[0291] In some embodiments, the contact elastic sheet 46 includes an elastic member 462. The elastic member 462 extends from the connecting portion 461 in the direction close to the catalytic layer.

[0292] When the catalytic layer is conductive, when the catalyst component 44 is installed on the mounting seat 45, the elastic member 462 is in contact connection with the catalytic layer so as to at least enable the catalytic layer to receive voltage. By setting it as the contact elastic sheet 46, the effective connection between the catalyst component 44 and the power supply component 43 can be ensured, and the transmission of electric energy can be ensured.

[0293] When the catalytic layer is not conductive, when the catalyst component 44 is installed on the mounting seat 45, the elastic member 462 is in contact connection with the catalyst carrier so that the catalyst carrier receives voltage.

[0294] The discharge products of the above solution are mainly ions, and basically no ozone or very little ozone (lower than the human sensory threshold) is generated. During the whole purification process, the purification device can operate continuously for a long time, quickly and continuously catalyze and decompose odor molecules, and users can't perceive the ozone smell and there will be no negative impact on users' health due to ozone.

[0295] The ions generated by the discharge of the catalyst assembly are released into the storage space of the entire refrigerator through air circulation. The ions kill the attached microorganisms on the surface of the food ingredients and the surface of the refrigerator compartment, and further decompose the odor molecules in the storage space of the refrigerator to further improve the odor purification effect. The ions can also kill the floating microorganisms in the storage space of the refrigerator.

[0296] When there is a counter electrode, by adjusting the voltage of the discharge electrode and the distance between the discharge electrode and the counter electrode, the reduced electric field strength E / n can also be adjusted. When E / n is lower than 100 Td required for ozone generation, basically no ozone is generated;

[0297] When E / n ≥ 100 Td, ozone begins to be generated; when E / n ≥ 300 Td, a large amount of ozone is generated.

[0298] In some embodiments, the purification device 4 further includes an electrode assembly 6. The electrode assembly 6 is disposed opposite to the conductive catalyst carrier and is located on the side of the conductive catalyst carrier away from the air return opening 48. The electrode component is grounded. A potential difference is generated between the electrode component and the conductive catalyst carrier to form an electric field therebetween.

[0299] In some embodiments, the electrode component is connected to the low potential end relative to the conductive catalyst carrier to form an electric field between the electrode component and the conductive catalyst carrier.

[0300] In some embodiments, referring to Figure 15 , the electrode assembly 6 is disposed opposite to the conductive catalyst carrier and is located on the side of the conductive catalyst carrier close to the air return opening 48.

[0301] In some embodiments, the controller 21 is configured to control the power supply component 43 to provide at least a set voltage to the conductive catalyst carrier, so as to form a potential difference between the conductive catalyst carrier and the electrode assembly 6, and further form a catalytic electric field. The air flow enters the housing 41 through the air return opening 48 and flows through the catalytic layer. The catalytic layer catalytically decomposes the odor molecules in the air flow at least under the action of the catalytic electric field.

[0302] In the above solution, the electrode assembly 6 and the catalyst assembly 44 are connected to the power supply component 43, so that the catalyst assembly 44 is at the high potential end and the electrode assembly 6 is at the low potential end. An electric field is formed between the electrode assembly 6 and the catalyst assembly 44; an electron concentration region is formed on the electrode assembly 6 when it is energized, and ions are generated by ionization in this region. The catalytic layer on the surface of the catalyst assembly 44 catalytically decomposes the odor molecules in the air flow efficiently under the synergistic action of the ions and the electric field. The odor purification efficiency of the refrigerator is effectively improved.

[0303] In some embodiments, by increasing the voltage value provided by the power supply component 43, ozone will be generated when the catalyst assembly ionizes the air. The air flow carries the ozone and then flows through the air supply opening 49 to the air duct or the accommodation space to perform sterilization inside the refrigerator.

[0304] In some embodiments, the electrode assembly 6 includes a vent. The vent is provided on the electrode assembly 6 and is used to accommodate the passage of air flow. The air flow passing through the vent carries ions generated by the discharge component and flows through the catalytic layer to catalytically decompose odor molecules in the air flow by the catalytic layer.

[0305] In the above solution, a vent is provided on the electrode assembly 6 to prevent the electrode assembly 6 from hindering the air flow when placed in the cavity. At the same time, by providing the vent and generating ions near the vent, the ions can better flow with the air flow to the catalyst assembly 44, improving the catalytic efficiency.

[0306] In some embodiments, the electrode assembly 6 is provided as a mesh electrode. The mesh electrode is disposed opposite to the conductive catalyst carrier. The mesh electrode has a plurality of first electrodes and a plurality of second electrodes that intersect with each other. The intersection positions of the first electrode and the second electrode form a discharge component.

[0307] In some embodiments, the mesh electrode is further provided with a tip component. It is used to gather electrons and ionize air to generate ions. By providing the tip component on the mesh electrode, compared with the discharge component formed at the intersection position of the mesh electrode, the electron gathering effect of the tip component is better, and its ionization effect is also better.

[0308] In the above solution, the electrode catalyst carrier is provided as a mesh electrode, and an electric field is formed by the mesh electrode and the catalyst assembly 44, and the mesh electrode can also generate ions. To ensure the effectiveness of the catalytic efficiency.

[0309] In some embodiments, the electrode assembly 6 is provided as a linear electrode. The linear electrode is disposed opposite to the conductive catalyst carrier. The linear electrode is connected to the power supply component 43 to receive a first voltage. The edges and tips of the linear electrode form a discharge component.

[0310] In the above solution, the electrode catalyst carrier is provided as a linear electrode, and an electric field is formed by the linear electrode and the catalyst assembly 44, and the linear electrode can also generate ions. To ensure the effectiveness of the catalytic efficiency.

[0311] In some embodiments, a plurality of linear electrodes can be provided. The plurality of linear electrodes are arranged at a certain distance.

[0312] In some embodiments, the electrode assembly 6 includes an electrode component. The electrode component is connected to the power supply component 43 to receive a first voltage.

[0313] In some embodiments, the electrode assembly 6 includes a needle-like component. The needle-like component is electrically connected to the electrode component. The tip position of the needle-like component forms a discharge component for ionizing air to generate ions.

[0314] In the above solution, the electrode catalyst carrier is configured to have a structure with needle-like components. After power-on, electrons mainly gather on the needle-like components. An electric field is formed between the needle-like components and the catalyst assembly 44, and the needle-like components can also generate ions to ensure the effectiveness of the catalytic efficiency.

[0315] In some embodiments, the electrode assembly 6 is configured as a plate-shaped perforated electrode. The plate-shaped perforated electrode is disposed opposite to the catalyst assembly 44.

[0316] In the technical solution where an electric field is formed between the catalyst assembly 44 and the electrode assembly 6, the ion group generated by high-voltage discharge contains a relatively high concentration of ozone. After diffusing into the refrigerator storage compartment with the wind circulation, it has a good sterilization effect, especially a high sterilization efficiency for surface-attached bacteria.

[0317] This application discloses a refrigerator, which includes a purification device 4 provided in an accommodation space or an air duct. The purification device 4 includes a power supply component 43 for providing voltage and a catalyst assembly 44 electrically connected to the power supply component 43. The catalyst assembly 44 receives the voltage output by the power supply component 43 to generate at least an electric field around it. The catalyst assembly 44 includes a conductive catalyst carrier and an insulating catalytic layer coated on the surface of the conductive catalyst carrier. The controller 21 is configured to control the power supply component 43 to provide voltage to the conductive catalyst carrier, so as to form a potential difference between the conductive catalyst carrier and the ground, and then form a catalytic electric field around the conductive catalyst carrier. When the air flow enters the cavity through the air return port 48 and flows through the insulating catalytic layer, the insulating catalytic layer catalytically decomposes the odor molecules in the air flow at least under the action of the catalytic electric field. By using the electric field generated by the energization of the catalyst assembly 44 to catalytically decompose the odor molecules in the air flow by the insulating catalytic layer, the purification efficiency is improved.

[0318] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

[0319] For the sake of convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussions are not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. According to the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are for better explaining the principles and practical applications, so that those skilled in the art can better use the embodiments and various different modified embodiments suitable for specific use considerations.

Claims

1. A refrigerator, characterized in that: include: Box shell; An inner container is arranged inside the box shell, and a containing space is formed inside the inner container; An air duct assembly is arranged on the rear side or the front side of the rear wall of the inner container, and the air duct assembly is structured to form an air duct, and the air duct is connected to the accommodating space; A purification device is arranged in the accommodating space or the air duct, and the purification device comprises: A shell body, which is formed with a cavity and an air return port and an air supply port connected to the cavity; A power supply component for providing voltage; A catalyst component is disposed in the cavity, and the catalyst component comprises: A catalyst carrier having a porous structure for absorbing odor molecules in the airflow, wherein the catalyst carrier is disposed in the cavity; A catalytic layer is disposed on the surface of the catalyst carrier and is used to decompose odor molecules; at least one of the catalyst carrier and the catalytic layer is electrically conductive, and the catalytic layer or / and the catalyst carrier are electrically connected to the power supply component to generate an electric field around the catalytic layer; the surface of the catalytic layer has a first protruding structure, so that air is ionized at the first protruding structure to generate ions; A controller is configured to control the power supply component to provide a voltage to the catalyst component so that a catalytic electric field is formed around the catalyst layer, and the first protrusion structure ionizes the air to generate ions; When the airflow enters the cavity through the return air port and flows through the catalytic layer, the catalytic layer catalytically decomposes the odor molecules adsorbed by the catalyst carrier under the synergistic effect of the catalytic electric field and ions.

2. The refrigerator according to claim 1, characterized in that: The purification device also includes: A purification fan is disposed in the cavity. Under the action of the purification fan, the airflow enters the cavity through the return air port and then enters the accommodating space through the air supply port; The controller is configured to control the purification fan to operate so as to increase the air flow rate when the catalyst component is used to catalyze and decompose odor molecules.

3. The refrigerator according to claim 1, characterized in that: The catalyst carrier is configured as a conductive catalyst carrier with a porous structure to absorb odor molecules in the air, and the catalytic layer is configured as an insulating catalytic layer, the insulating catalytic layer is coated on the surface of the conductive catalyst carrier, and a plurality of the first protrusion structures are formed on the surface of the insulating catalytic layer; The power supply component provides voltage to the conductive catalyst carrier, so that a potential difference is formed between the conductive catalyst carrier and the ground, and a catalytic electric field is generated around the conductive catalyst carrier; When the airflow enters the cavity through the return air port and flows through the insulating catalytic layer, the insulating catalytic layer catalytically decomposes the adsorbed odor molecules at least under the action of the catalytic electric field.

4. The refrigerator according to claim 1, characterized in that: The catalyst carrier is configured as an insulating catalyst carrier with a porous structure to absorb odor molecules in the air; the catalytic layer is configured as a conductive catalytic layer, the conductive catalytic layer is coated on the surface of the insulating catalyst carrier, and a plurality of the first protrusion structures are formed on the surface of the conductive catalytic layer; The power supply component provides a voltage to the conductive catalytic layer, so that a potential difference is formed between the conductive catalytic layer and the ground, and a catalytic electric field is generated around the conductive catalytic layer; When the airflow enters the cavity through the return air port and flows through the conductive catalytic layer, the conductive catalytic layer catalytically decomposes the odor molecules adsorbed by the insulating catalyst carrier at least under the action of the catalytic electric field.

5. The refrigerator according to claim 1, characterized in that: The catalyst carrier is configured as a conductive catalyst carrier with a porous structure to absorb odor molecules in the air; the catalyst layer is configured as a conductive catalyst layer, the conductive catalyst layer is coated on the surface of the conductive catalyst carrier, and a plurality of the first protrusion structures are formed on the surface of the conductive catalyst layer; The power supply component provides voltage to the conductive catalyst layer and the conductive catalyst carrier, so that a potential difference is formed between the conductive catalyst layer and the ground, and a catalytic electric field is generated around the conductive catalyst layer; When the airflow enters the cavity through the return air port and flows through the conductive catalytic layer, the conductive catalytic layer catalytically decomposes the odor molecules adsorbed by the insulating catalyst carrier at least under the action of the catalytic electric field.

6. The refrigerator according to claim 1, characterized in that: Also includes: A door body, used to open or close the accommodation space; A door detection device, used to detect whether the door is opened or closed; The controller is configured to, before controlling the power supply component to provide voltage to the catalytic layer and / or the catalyst carrier, determine whether the door body is in a closed state, and if in a closed state, control the power supply component to supply power.

7. The refrigerator according to claim 6, characterized in that: The controller is configured to control the power supply component to stop supplying power if it is detected that the door body is opened during the period when the power supply component provides voltage to the catalytic layer and / or the catalyst carrier.

8. The refrigerator according to claim 1, characterized in that: The purification device also includes: A mounting seat, which is used to mount the catalyst assembly; A contact spring, which is arranged on one side of the mounting seat and is used to connect the power supply component and the catalyst assembly, and the contact spring comprises: A connecting portion connected to the power supply component; an elastic component, which is formed by extending from the connecting portion toward the direction close to the catalyst layer; When the catalyst component is mounted on the mounting seat, the elastic component is in contact with and connected to the catalyst component, so that the catalyst component receives voltage.

9. The refrigerator according to claim 1, characterized in that: The controller is configured to: When receiving the first signal, the power supply component is controlled to provide the first voltage to the catalyst component, at which time the catalyst component serves as a high potential end and the ground serves as a zero potential end, and the catalytic electric field is formed between the catalyst component and the ground; The airflow enters the housing through the return air port and flows through the catalytic layer, and the catalytic layer catalytically decomposes odor molecules in the airflow under the action of the catalytic electric field; When receiving the second signal, the power supply component is controlled to provide a second voltage to the catalyst component, wherein the second voltage is greater than the first voltage, and at this time, the catalytic electric field is formed between the catalyst component and the ground, and the catalyst component discharges to generate ions; The airflow enters the shell through the return air port and flows through the catalytic layer. The catalytic layer catalytically decomposes odor molecules in the airflow under the synergistic effect of the catalytic electric field and the ions.

10. A refrigerator, characterized in that: include: Box shell; An inner container is arranged inside the box shell, and a containing space is formed inside the inner container; An air duct assembly is arranged on the rear side or the front side of the rear wall of the inner container, and the air duct assembly is structured to form an air duct, and the air duct is connected to the accommodating space; A purification device is arranged in the accommodating space or the air duct, and the purification device comprises: A shell body, which is formed with a cavity and an air return port and an air supply port connected to the cavity; A power supply component for providing voltage; A catalyst component is disposed in the cavity, and the catalyst component comprises: A catalyst carrier is provided with a porous structure to absorb odor molecules in the airflow, and a second convex structure is formed on the outer surface of the catalyst carrier; the catalyst carrier is arranged in the cavity; A catalytic layer, which is arranged on the surface of the catalyst carrier and is used to decompose odor molecules; at least one of the catalyst carrier and the catalytic layer is conductive, and the catalytic layer or / and the catalyst carrier are electrically connected to the power supply component to generate an electric field around the catalytic layer; A controller is configured to control the power supply component to provide a voltage to the catalyst component so that a catalytic electric field is formed around the catalytic layer, and the second protruding structure ionizes the air to generate ions; When the airflow enters the cavity through the return air port and flows through the catalytic layer, the catalytic layer catalytically decomposes the odor molecules adsorbed by the catalyst carrier under the synergistic effect of the catalytic electric field and ions.

11. A refrigerator, characterized in that: include; Box shell; An inner container is arranged inside the box shell, and a containing space is formed inside the inner container; An air duct assembly is arranged at the rear side or the front side of the inner container, the air duct assembly is structured to form an air duct, and the air duct is connected to the accommodation space; A purification device is arranged in the accommodating space or the air duct, and the purification device comprises: A shell body, which is formed with a cavity and an air return port and an air supply port connected to the cavity; A power supply component for providing voltage; A catalyst component is disposed in the cavity, and the catalyst component comprises: A catalyst carrier having a porous structure for absorbing odor molecules in the airflow, wherein the catalyst carrier is disposed in the cavity; A catalytic layer is provided on the surface of the catalyst carrier and is used to decompose odor molecules; at least one of the catalyst carrier and the catalytic layer is conductive, and the catalytic layer or / and the catalyst carrier are electrically connected to the power supply component to generate an electric field around the catalytic layer; a first protrusion structure is formed on the surface of the catalytic layer so that air is ionized at the first protrusion structure to generate ions; An electrode assembly, which is arranged opposite to the catalyst carrier and is located on a side of the catalyst carrier close to or away from the return air port, and the electrode component is grounded or connected to a low potential end of the catalyst carrier to form an electric field between the electrode component and the catalyst carrier; A controller configured to control the power supply component to provide a set voltage to the catalyst assembly so as to form a potential difference between the catalyst carrier and the electrode assembly or between the catalyst layer and the electrode assembly, thereby forming a catalytic electric field around the catalyst layer; The airflow enters the housing through the return air port and flows through the catalytic layer. The catalytic layer catalytically decomposes odor molecules in the airflow at least under the action of the catalytic electric field.

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