Purification equipment and refrigerators

Abstract

The present disclosure relates to a purification device and a refrigerator. The purification device includes two discharge electrodes and a porous insulating dielectric disposed between the two discharge electrodes. In addition, one of the two discharge electrodes is disposed so as to be in close contact with the porous insulating dielectric, and there is a gap between the other of the discharge electrodes and the porous insulating dielectric. The discharge relationship between the discharge electrodes and the porous insulating dielectric can be optimized, and a phenomenon in which condensed water or foreign matter gathers on the discharge electrodes and intensifies the discharge can be avoided, and ozone generation can be reduced to prevent ignition.

Description

[Technical field]

[0001] The subject matter of this disclosure relates to the technical field of electrical appliances, and in particular to purification devices and refrigerators. [Background technology]

[0002] When a refrigerator's refrigerator compartment is in use, it is sealed for a long time, which causes a large amount of odor to be generated inside the refrigerator. If these odors mix together, a strange smell will be generated, which is unacceptable to users, so many technologies are used in refrigerators to purify the odor. Summary of the Invention [Problem to be solved by the invention]

[0003] In the prior art, the technology based on the synergistic action of low-temperature plasma and catalysts that discharges electricity using an electric field is the preferred method from various viewpoints such as the effect of purifying odors, the period of use, and the reliability of the method. However, refrigerators have relatively high humidity, which makes it easy for condensation to occur, and the inclusion of foreign matter can cause problems such as increased discharge, which can lead to risks such as ozone and ignition. [Means for solving the problem]

[0004] The present disclosure aims to provide a purification device and a refrigerator that can solve, at least to some extent, technical problems that arise in technologies based on a synergistic action of low-temperature plasma and a catalyst, in which the discharge becomes stronger, the ozone increases, and the risk of fire and the like arises.

[0005] According to one aspect of the present disclosure, a purification device is provided that includes two discharge electrodes and a porous insulating dielectric placed between the two discharge electrodes, where one of the discharge electrodes is placed in close contact with the porous insulating dielectric and there is a gap between the other discharge electrode and the porous insulating dielectric.

[0006] In some embodiments, the porous insulating dielectric comprises a honeycomb ceramic.

[0007] In some embodiments, the porous insulating dielectric is coated with a catalytic media.

[0008] In some embodiments, one of the two discharge electrodes is a thread-like electrode and the other discharge electrode is a plate-like electrode.

[0009] In some embodiments, the thread electrode is placed in intimate contact with the porous insulating dielectric, and there is a gap between the plate electrode and the porous insulating dielectric.

[0010] In some embodiments, the gap between the plate electrode and the porous insulating dielectric is 3 mm or more.

[0011] In some embodiments, the thread electrode comprises a plurality of strip electrodes arranged in parallel.

[0012] In some embodiments, the plate electrode has mesh holes formed therein.

[0013] In some embodiments, the edge of the thread-like electrode is fitted within a first case, the edge of the plate-like electrode is fitted within a second case, and the first case is detachably connected to the second case.

[0014] In some embodiments, the thread-like electrode and the first case are integrally molded, and the plate-like electrode and the second case are integrally molded.

[0015] In some embodiments, the second case has a position limiting portion that is pressed against the porous insulating dielectric.

[0016] In some embodiments, a flexible portion is provided between a periphery of the porous insulating dielectric and the second case.

[0017] In some embodiments, the first case is connected to the second case by a plurality of fasteners.

[0018] In some embodiments, the purification apparatus further includes a high voltage power supply and a mounting box for receiving the high voltage power supply, the high voltage power supply being connected to two of the discharge electrodes.

[0019] In some embodiments, the two discharge electrodes pass through the mounting box and are connected to the high voltage power supply.

[0020] According to another aspect of the present disclosure, there is provided a refrigerator including the above purification device.

[0021] In some embodiments, the refrigerator further includes a cooling duct, and the purification device is fixedly installed in an opening of the cooling duct.

[0022] In some embodiments, the arrangement direction in which the porous insulating dielectric and the two discharge electrodes are arranged coincides with the direction in which air flows in the cooling air duct.

[0023] In some embodiments, a cooling fan is installed in the cooling duct. Effect of the Invention

[0024] When the purification device and refrigerator according to the present disclosure are used, since the porous insulating dielectric is disposed between the two discharge electrodes, an ion field is formed between the two discharge electrodes, and when air enters the ion field, a medium barrier discharge is performed by the porous insulating dielectric and the two discharge electrodes, plasma is generated, and the molecules of strange odors in the air are decomposed to remove the strange odor. Since one of the two discharge electrodes is in close contact with the porous insulating dielectric and there is a gap between the other and the porous insulating dielectric, no difference in dielectric constant occurs, uniformity and stability of the voltage difference of the porous insulating dielectric is guaranteed, the discharge relationship between the discharge electrode and the porous insulating dielectric is optimized, the occurrence of the phenomenon of locally intensifying the discharge is avoided, the generation of ozone is reduced, and ignition is avoided. Since the gap between the porous insulating dielectric and one of the two discharge electrodes is widened, when condensed water is collected on the discharge electrode or the porous insulating dielectric, the condensed water on the discharge electrode does not adhere to the condensed water on the porous insulating dielectric, the existence of a difference in dielectric constant is avoided, the occurrence of the phenomenon of locally intensifying the discharge is avoided, the generation of ozone is reduced, and ignition is avoided. Moreover, even if dust is likely to adhere to the discharge electrodes, the effect on the dielectric constant is reduced, thereby ensuring uniformity and stability of the dielectric constant. [Brief description of the drawings]

[0025] In order to more clearly describe the technical means of the embodiments in the content of the present disclosure, the following briefly introduces drawings necessary for describing the embodiments. It goes without saying that the drawings described below are merely some embodiments in the content of the present disclosure, and other drawings can be obtained based on these drawings without the need for creative labor by those skilled in the art.

[0026] [Figure 1] FIG. 1 is an exploded view of a purification device according to some embodiments of the present disclosure. [Diagram 2] FIG. 1 is a schematic diagram showing a configuration of a purification device according to some embodiments of the present disclosure. [Diagram 3] FIG. 3 is a cross-sectional view of AA in FIG. 2 of the present disclosure. [Figure 4]FIG. 4 is an enlarged schematic diagram of a portion B in FIG. 3 of the present disclosure. [Diagram 5] FIG. 1 is a schematic diagram illustrating a refrigerator according to some embodiments of the present disclosure. [Figure 6] FIG. 1 is a schematic diagram illustrating a cooling duct configuration according to some embodiments of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0027] Hereinafter, technical means based on the embodiments of the present disclosure will be clearly and completely described with reference to the drawings. However, the described embodiments are only a part, not all, of the embodiments of the present disclosure. It is clear that all other embodiments obtained by those skilled in the art based on these embodiments are within the scope of protection of the present disclosure, unless creative labor is performed.

[0028] In addition, the indication of any direction in the embodiments of the present disclosure is merely intended to explain the relative positional relationships and operating conditions between each component part in a specific posture, and if that specific posture changes, the indication of that direction also changes.

[0029] In the present disclosure, unless otherwise clearly stated or limited, expressions such as "connected" and "fixed" should be understood in a broad sense. For example, unless otherwise clearly specified, "fixed" may be a fixed connection, a removable connection, an integrated one, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, or a relationship in which two parts communicate with each other or two parts interact with each other. Those skilled in the art can understand the specific meaning of the above terms in the present disclosure according to the specific situation.

[0030] Furthermore, the descriptions such as "first" and "second" in this disclosure are for illustrative purposes only, and cannot be understood as expressing or implying their relative importance or implying the number of the mentioned technical features. Thus, features defined as "first" and "second" may include at least one of the features, either explicitly or implicitly. Furthermore, the technical means in each embodiment may be combined with each other, but this must be based on the realization by a person skilled in the art. If the combination of technical means is inconsistent or cannot be realized, it should be understood that such combination of technical means does not exist and does not fall within the scope of the protection sought by this application.

[0031] Hereinafter, the present disclosure will be described based on specific examples with reference to the drawings.

[0032] One proposal of the present disclosure provides a purification device that can solve, at least to some extent, the technical problems that arise in technologies based on the synergistic action of low-temperature plasma and catalysts that cause discharge due to an electric field, resulting in stronger discharges, increased ozone, and the risk of ignition.

[0033] Fig. 1 is an exploded view showing a purification device according to some embodiments of the present disclosure. Referring to Fig. 1, a purification device according to some embodiments of the present disclosure includes a porous insulating dielectric 10 and two discharge electrodes 20. The porous insulating dielectric 10 is installed between the two discharge electrodes 20. One of the two discharge electrodes 20 is installed so as to be in close contact with the porous insulating dielectric 10, and there is a gap between the other electrode and the porous insulating dielectric 10.

[0034] In some embodiments, the porous insulating dielectric 10 is disposed between the two discharge electrodes 20, so that an ion field is formed between the two discharge electrodes 20, and when air enters the ion field, a dielectric barrier discharge is performed between the porous insulating dielectric 10 and the two discharge electrodes 20, plasma is generated, and the molecules of strange odors in the air are decomposed to remove the strange odor. In addition, the two discharge electrodes 20 are disposed so that one of them is in close contact with the porous insulating dielectric 10, and there is a gap between the other and the porous insulating dielectric 10, so that no difference in dielectric constant occurs, and the uniformity and stability of the voltage difference of the porous insulating dielectric 10 is guaranteed, and the discharge relationship between the discharge electrodes 20 and the porous insulating dielectric 10 is optimized, so that the occurrence of the phenomenon of locally intensified discharge can be avoided, and the generation of ozone can be reduced and ignition can be avoided. Since the gap between the porous insulating dielectric 10 and one of the two discharge electrodes 20 is widened, when condensed water gathers on the discharge electrode 20 or the porous insulating dielectric 10, the condensed water on the discharge electrode 20 does not adhere to the condensed water on the porous insulating dielectric 10, which makes it possible to avoid the existence of a difference in the dielectric constant, to avoid the occurrence of the phenomenon of locally intensified discharge, to reduce the generation of ozone, and to prevent ignition. Moreover, even if dust is easily attached to the discharge electrode, it has no effect on the dielectric constant, and it is possible to ensure the uniformity and stability of the dielectric constant.

[0035] Referring to FIG. 1, in some embodiments, the two discharge electrodes 20 are formed so that one is a thread electrode 201 and the other is a plate electrode 202, and discharge is asymmetrically performed to ensure the effect of discharge, generate plasma, and decompose the molecules of the strange odor in the air to remove the strange odor. Of course, in other embodiments, the two discharge electrodes 20 may be one or more of a thread electrode, a plate electrode, and a needle electrode. From the viewpoint of ensuring the effect of discharge, it is necessary to make the two discharge electrodes 20 different in order to realize asymmetric discharge. Furthermore, in order to reduce costs and facilitate installation, it is preferable that the two discharge electrodes 20 are one of the thread electrode 201 and the other of the plate electrode 202.

[0036] Referring to FIG. 1, in some embodiments, the thread electrode 201 is in close contact with the porous insulating dielectric 10, and there is a gap between the plate electrode 202 and the porous insulating dielectric 10. In other words, the thread electrode 201 and the plate electrode 202 are provided on both sides of the porous insulating dielectric 10, respectively. Then, no difference occurs in the dielectric constant, the uniformity and stability of the voltage difference of the porous insulating dielectric 10 is guaranteed, the discharge relationship between the discharge electrode 20 and the porous insulating dielectric 10 is optimized, the occurrence of the phenomenon of the discharge being locally strengthened is avoided, the generation of ozone is reduced, and ignition can be avoided. Of course, in other embodiments, it is also possible to have a gap between the thread electrode 201 and the porous insulating dielectric 10, and to install the plate electrode 202 and the porous insulating dielectric 10 so that they are in close contact with each other. From the viewpoint of the difficulty of processing, it is preferable that the thread electrode 201 and the porous insulating dielectric 10 are installed so that they are in close contact with each other, and there is a gap between the plate electrode 202 and the porous insulating dielectric 10.

[0037] In some embodiments, in order to ensure the effect of discharge between the two discharge electrodes 20, the distance between the thread electrode 201 and the plate electrode 202 is set to 10 mm, and the thickness of the porous insulating dielectric 10 is 5 mm. In the prior art, the gap between the thread electrode 201 and the plate electrode 202 and the porous insulating dielectric 10 is 2.5 mm, and the water vapor, foreign matter, and condensed water in the refrigerator enter the 2.5 mm gap and further adhere to the thread electrode 201 and the plate electrode 202, causing the 2.5 mm gap to become 2 mm, and further to become 0.5 mm. There is a difference in dielectric constant between the gap between the thread electrode 201 and the porous insulating dielectric 10 and between the plate electrode 202 and the porous insulating dielectric 10. Due to the difference in dielectric constant, the uniformity and stability of the voltage difference of the porous insulating dielectric 10 becomes poor, and the phenomenon of the discharge becoming stronger occurs, which generates ozone, generates strange odors, and further causes fire accidents. On the other hand, in the present disclosure, the thread-like electrode 201 and the porous insulating dielectric 10 are in close contact, that is, the gap between the thread-like electrode 201 and the porous insulating dielectric 10 is 0 mm, and the gap between the plate electrode 202 and the porous insulating dielectric 10 is 5 mm. The distance between the plate electrode 202 and the porous insulating dielectric 10 becomes greater, and the action of the wind blows out water and foreign matter, making it difficult for the water and foreign matter to gather on the plate electrode 202 and strengthening the discharge. Even if the gap between the plate electrode 202 and the porous insulating dielectric 10 becomes smaller due to water condensation or foreign matter adhering to the plate electrode 202, since the gap between the thread-like electrode 201 and the porous insulating dielectric 10 is 0 mm, no difference in dielectric constant occurs, and uniformity and stability are guaranteed for the voltage difference of the porous insulating dielectric 10. The discharge relationship between the discharge electrode 20 and the porous insulating dielectric 10 is optimized, and the phenomenon of condensed water or foreign matter gathering on the plate electrode 202 and strengthening the discharge is avoided, and the generation of ozone can be reduced and ignition can be avoided.

[0038] In some embodiments, the distance between the thread electrode 201 and the plate electrode 202 is set to 10 mm, and when the condensed water gathers on the plate electrode 202 or the porous insulating dielectric 10, the thread electrode 201 and the porous insulating dielectric 10 are in close contact with each other, so that the gap between the plate electrode 202 and the porous insulating dielectric 10 is 5 mm, and the distance between the plate electrode 202 and the porous insulating dielectric 10 is sufficiently large. This makes it possible to prevent the condensed water on the plate electrode 202 and the condensed water on the porous insulating dielectric 10 from coagulating, to prevent the existence of a difference in dielectric constant, to prevent the occurrence of a phenomenon in which the discharge is locally strengthened, to reduce the generation of ozone, and to prevent ignition.

[0039] In some embodiments, the gap between the plate electrode 202 and the porous insulating dielectric 10 is 5 mm. Even if dust is likely to gather on the plate electrode 202 or the porous insulating dielectric 10, the gap between the plate electrode 202 and the porous insulating dielectric 10 can be 4.5 mm, which reduces the effect on the dielectric constant compared with the prior art in which the gap between the plate electrode 202 and the porous insulating dielectric 10 is 2.5 mm to 2 mm, thereby ensuring uniformity and stability of the dielectric constant, avoiding the occurrence of the phenomenon of locally intensified discharge, reducing the generation of ozone, and avoiding ignition.

[0040] In some embodiments, if the distance between the plate electrode 202 and the porous insulating dielectric 10 is too close, the discharge will be stronger and a large amount of ozone will be generated, and if the concentration of ozone is too high, it is not suitable for a refrigerator, so the distance between the plate electrode 202 and the porous insulating dielectric 10 is set to 3 mm or more, preferably 5 mm. Therefore, the discharge by the plate electrode 202 will not be stronger, a large amount of ozone will not be generated, and a large amount of low-temperature plasma will be generated, ensuring the effect of purifying odors.

[0041] Referring to FIG. 1, in some embodiments, the thread electrode 201 includes a strip electrode 2011 arranged in parallel, and there is a gap between every two adjacent strip electrodes 2011, thereby forming the thread electrode 201, and the thread electrode 201 and the plate electrode 202 are formed to perform an asymmetric discharge, so as to ensure the effect of the discharge, generate plasma, and decompose the odorous molecules in the air to remove the odor.

[0042] In some embodiments, the material of the strip electrode 2011 may be stainless steel. Stainless steel is a common material, which has low manufacturing cost, high temperature resistance, good processing performance, high toughness, etc., is not corroded, and has a long service life. Of course, in other embodiments, the material of the strip electrode 2011 may be made of one or more metallic materials such as copper alloy, aluminum alloy, etc.

[0043] Referring to FIG. 1, in some embodiments, to ensure that air enters the ion electric field, mesh holes 2021 are drilled into the plate electrode 202 to allow air to pass through.

[0044] In some embodiments, the diameter of the mesh holes 2021 is 20 mm or less, and a diameter of 10 mm is preferred, which ensures that air can smoothly enter the ion electric field formed between the thread electrode 201 and the plate electrode 202. The mesh holes 2021 may be hexagonal in shape, or may be rectangular, circular, or other shapes.

[0045] FIG. 2 is a schematic diagram showing the configuration of a purification device according to some embodiments of the present disclosure. Referring to FIG. 1 and FIG. 2, in some embodiments, the edges of the thread electrode 201 and the plate electrode 202 are sharp, so that the surface has a large circular curvature, and electric ions gather at the edges of the thread electrode 201 and the plate electrode 202, which causes tip discharge and makes it easy to catch fire, resulting in an ignition accident. At the same time, it also invites ozone to exceed the standard. On the other hand, in the present disclosure, the edge of the thread electrode 201 is fitted into the first case 203, and the first case 203 covers the edge of the thread electrode 201, so that the edge is covered, and the edge of the thread electrode 201 is prevented from being exposed. The edge of the plate electrode 202 is fitted into the second case 204, and the second case 204 covers the edge of the plate electrode 202, so that the edge is covered, and the edge of the plate electrode 202 is prevented from being exposed. In addition, it is possible to prevent electric ions from gathering at the edges of the thread electrode 201 and the plate electrode 202, so that tip discharge does not occur and no ignition accidents occur, and at the same time, it is possible to ensure that ozone meets the standard.

[0046] In some embodiments, the depth of the edge of the thread-like electrode 201 fitted into the first case 203 is 0.7 mm or more. This allows the first case 203 to completely cover the edge of the thread-like electrode 201, thereby realizing a covering of the edge portion, and preventing the edge portion of the thread-like electrode 201 from being exposed. The depth of the edge of the plate electrode 202 fitted into the second case 204 is 0.7 mm or more. This allows the second case 204 to completely cover the edge of the plate electrode 202, thereby realizing a covering of the edge portion, and preventing the edge portion of the plate electrode 202 from being exposed.

[0047] In some embodiments, the material of the first case 203 and the second case 204 may be plastic to reduce costs. The plastic may be ABS material. ABS material is a ternary copolymer made of three simple substances, acrylonitrile (A), butadiene (B) and styrene (S), combining the functions of the three components, among which acrylonitrile has high hardness, strength, heat resistance and corrosion resistance, butadiene has impact resistance and toughness, and styrene has high surface gloss, ease of coloring and ease of processing. Due to the characteristics of the above three components, ABS plastic is a plastic with "hardness, toughness and high rigidity" and good overall performance. Of course, the plastic may be PP (polypropylene). Polypropylene is a polymer obtained by addition polymerization of acrylic, and is a white wax-like material that is transparent and lightweight in appearance. Its chemical formula is (C3H6)n and its density is 0.89-0.91g / cm 3 It has a melting point of 189℃ and softens at about 155℃. Its usable temperature range is -30~140℃, and it can withstand corrosion from acids, alkalis, salt liquids and various organic solvents below 80℃.

[0048] In some embodiments, the first case 203 and the second case 204 are both made of flame-retardant material and have a flame-retardant level of V0, which can prevent the occurrence of fire accidents and ensure safety during use.

[0049] In some embodiments, in order to optimize size and reduce costs, the thread-like electrode 201 and the first case 203 are integrated, and the plate-like electrode 202 and the second case 204 are integrated. Specifically, the thread-like electrode 201 and the first case 203 are integrated using a fitting injection molding process, so that the processing difficulty is reduced and the production cost is reduced. The plate-like electrode 202 and the second case 204 are integrated using a fitting injection molding process, so that the processing difficulty is reduced and the production cost is reduced.

[0050] 1 and 2, in some embodiments, the first case 203 is detachably connected to the second case 204 in order to conveniently mount the porous insulating dielectric 10. When mounting the porous insulating dielectric 10, the first case 203 and the second case 204 are separated, the porous insulating dielectric 10 is mounted to the first case 203 and the second case 204, and the porous insulating dielectric 10 is disposed between the thread electrode 201 and the plate electrode 202, thereby realizing a dielectric barrier discharge, generating plasma, and decomposing the molecules of the strange odor in the air to remove the strange odor.

[0051] Referring to Figures 1 and 2, in some embodiments, the first case 203 is connected to the second case 204 by a plurality of fastening portions 205, and the fastening portions 205 connect the first case 203 and the second case 204 together to form a receiving chamber, and the porous insulating dielectric 10 is firmly fixed to the receiving chamber, thereby ensuring that the thread electrode 201 and the porous insulating dielectric 10 are attached to each other.

[0052] 1 and 2, in some embodiments, the fastening portion 205 comprises a first fastening portion 2051 and a first fastening groove 2052, and when the first fastening portion 2051 is engaged with the first fastening groove 2051, the first case 203 and the second case 204 are fixedly connected.

[0053] 1 and 2, in some embodiments, the first case 203 and the second case 204 are provided with a first fastening portion 2051 on one side and a first fastening groove 2052 on the other side. When the first case 203 and the second case 204 are aligned, engaging the first fastening portion 2051 with the first fastening groove 2052 can fix and connect the first case 203 and the second case 204.

[0054] 1 and 2, in some embodiments, a plurality of first protrusions 2053 are provided at an end of the first case 203 facing the second case 204, a plurality of first fastening grooves 2052 are provided in the first protrusions 2053, a plurality of first grooves 2054 are provided on a periphery of the second case 204 facing the first case 203, and a first fastening portion 2051 is provided in the first groove, and the shape of the first groove 2054 is consistent with the shape of the first protrusions 2053, and the size of the first groove 2054 is consistent with the size of the first protrusions 2053. When the first protrusions 2053 are correspondingly inserted into the first groove 2054, the first fastening portion 2051 is engaged with the first fastening groove 2052, thereby realizing a fixed connection between the first case 203 and the second case 204. Of course, in other embodiments, a plurality of first grooves may be provided on the end of first case 203 facing second case 204, and a plurality of first protrusions may be provided on the periphery of second case 204 facing first case 203.

[0055] FIG. 3 is a cross-sectional view taken along line AA in FIG. 2 in the present disclosure, and FIG. 4 is a schematic diagram enlarging a portion B in FIG. 3 in the present disclosure. Referring to FIG. 1, FIG. 3 and FIG. 4, in some embodiments, a position limiting portion 40 is provided on the second case 204 to ensure a gap between the porous insulating dielectric 10 and the plate electrode 202. The position limiting portion 40 is pressed against the porous insulating dielectric 10, and when the first case 203 is connected to the second case 204, the porous insulating dielectric 10 is pressed against the position limiting portion 40. This avoids the porous insulating dielectric 10 and the plate electrode 202 from being stuck together, and places a gap between the porous insulating dielectric 10 and the plate electrode 202. Specifically, the position limiting portion 40 is a plurality of position limiting blocks, and ensures that there is a gap between the porous insulating dielectric 10 and the plate electrode 202. Of course, the position limiting block 40 may be a plurality of position limiting columns.

[0056] Referring to Figures 1, 3 and 4, in some embodiments, the position limiting portion 40 is pressed against the edge of the porous insulating dielectric 10 to avoid affecting the air passing through and ensure that the air can flow smoothly.

[0057] In some embodiments, when manufacturing the porous insulating dielectric 10, the porous insulating dielectric 10 may have a tolerance, which may prevent the porous insulating dielectric 10 from being tightly attached to the thread-like electrode 201, and may cause a gap between the porous insulating dielectric 10 and the thread-like electrode 201, which may allow water or dust to collect on the thread-like electrode 201. In order to ensure that the porous insulating dielectric 10 and the thread-like electrode 201 are tightly attached to each other, a flexible part 50 is provided between the periphery of the porous insulating dielectric 10 and the second case 204, which compensates for the tolerance of the porous insulating dielectric 10, allows the porous insulating dielectric 10 to be tightly attached to the thread-like electrode 201, and prevents water or dust from collecting on the thread-like electrode 201.

[0058] In some embodiments, the flexible portion 50 may be a silica gel padding, since the silica gel padding has high compressibility, flexibility and elasticity, and therefore can well compensate for the tolerances of the porous insulating dielectric 10.

[0059] 1, 3 and 4, in some embodiments, the flexible part 50 includes a first ring 501 and a second ring 502, and the inner diameter of the first ring 501 is larger than the inner diameter of the second ring 502. The first ring 501 is covered by the peripheral surface of the end of the porous insulating dielectric 10 facing the second case 204, and the second ring 502 is covered by the end surface of the porous insulating dielectric 10 facing the second case 204. When connecting the first case 203 and the second case 204, the second ring 502 compensates for the tolerance of the porous insulating dielectric 10 and ensures that the porous insulating dielectric 10 and the thread-like electrode 201 are firmly attached to each other, and the second ring 502 has a certain thickness, so that the gap between the porous insulating dielectric 10 and the plate-like electrode 202 can be guaranteed.

[0060] In some embodiments, the porous insulating dielectric 10 includes honeycomb ceramics. Honeycomb ceramics have good chemical stability, resistance to acids, alkalis and organic solvents, excellent resistance to rapid temperature changes, a high operating temperature of 1000°C, good antibacterial properties, difficulty in being decomposed by bacteria, difficulty in clogging and easy to regenerate, relatively strong stability in structure, narrow distribution of hole diameters, high permeability and non-toxicity, which are particularly suitable for handling food and medicine. Honeycomb ceramics are honeycomb-shaped structures composed of through holes with equal hole diameters, which are helpful for air to pass through. Honeycomb ceramics may be circular, rectangular, hexagonal or other shapes.

[0061] The effect of high pressure is that the long-chain strange odor molecules are decomposed into short-chain molecules, but without the plasma electric field, the short-chain strange odor molecules are polymerized to form large molecules that are difficult to decompose, and the effect of removing odors is reduced. Therefore, in some embodiments, honeycomb ceramics are adopted. When air arrives at the honeycomb ceramics, the air passes through the through holes in the honeycomb ceramics, which extends the stopping time and increases the stopping area of ​​the strange odor molecules in the ion electric field formed between the two discharge electrodes 20, so that the strange odor molecules and harmful cells and other substances can fully come into contact with the active substances in the ion electric field and react, and finally decompose into harmless and odorless CO2 and H2O, thereby quickly and effectively achieving sterilization and deodorization.

[0062] In some embodiments, the porous insulating dielectric 10 is coated with a catalytic medium. By coating the porous insulating medium 10 with a catalytic medium, the molecules of the strange odor are adsorbed and catalytically decomposed, and the time that the molecules of the strange odor remain in the porous insulating dielectric 10 is extended, and the strange odor can be removed more quickly. In some embodiments, the catalytic medium is a catalytic agent that mainly contains titanium dioxide and is assisted by a precious metal (mainly one or more selected from platinum, palladium, silver, and iridium).

[0063] In some embodiments, the metal oxide, the pore former and the clay are composite-fired to integrate the catalytic medium and the honeycomb ceramic, and the catalytic medium is placed on the honeycomb ceramic. The honeycomb ceramic has large pores on the surface and inside, which serve as reaction sites for adsorbing and catalytically decomposing the odorous gas, and can extend the time that the odorous molecules stay on the honeycomb ceramic. The honeycomb ceramic may also have a catalytic medium inside. When the catalytic medium on the outer surface of the honeycomb ceramic is destroyed, the catalytic medium in the honeycomb ceramic can continue to extend the time that the odorous molecules stay on the honeycomb ceramic. In another embodiment, the honeycomb ceramic substrate is manufactured in advance, and the honeycomb ceramic substrate is immersed in a catalytic medium solution, and then the honeycomb ceramic substrate is fired. This increases the bonding strength of the catalytic medium bonded to the surface of the honeycomb ceramics, and allows the catalytic medium to be firmly adsorbed onto the honeycomb ceramics, thereby extending the time that the odor molecules remain on the honeycomb ceramics.

[0064] In some embodiments, when air arrives at the porous insulating dielectric 10, it contains a large amount of high-energy electrons, positive ions, negative ions, excited particles and radicals with strong oxidizing properties, and when these highly active substances are adsorbed on the active centers in the catalytic medium, a synergistic catalytic effect is generated between the two, which rapidly catalytically oxidizes the odorous molecules into CO2 and water.

[0065] Referring to FIG. 1, in some embodiments, the purification apparatus further includes a high-voltage power supply 60 and a mounting box 70 for receiving the high-voltage power supply 60, and the high-voltage power supply 60 is connected to the two discharge electrodes 20 and supplies power to the two discharge electrodes 20 to form an ion electric field between the two discharge electrodes 20.

[0066] In some embodiments, the high voltage generating power supply 60 may be a high frequency single pulse power supply with a power duty ratio of <50% and a pulse peak voltage of 2KV-10KV. By inputting only 12V of high voltage, the safety of use in a refrigerator can be guaranteed. When the high voltage is turned on, the pulse reaches its peak value, the voltage difference value is maximized, and the air in the reaction area is ionized quickly. When the pulse reaches its average value, the voltage does not move. By selecting the frequency of the pulse voltage, the air particles passing through the area of ​​the passing plasma electric field are ionized, so that the operating time of the voltage is shortened, the usable time of the high voltage generating power supply 60 is extended, and the generation and accumulation of ozone is further reduced, while the consumption of the pulse voltage is also reduced, and the power is relatively low.

[0067] In some embodiments, in order to prevent moisture from entering the mounting box 70 and affecting the high voltage power supply 60, the two discharge electrodes 20 are passed through the mounting box 70 and connected to the high voltage power supply 60. That is, the ends of the two discharge electrodes 20 pass through the mounting box 70 and enter the mounting box 70, and the two discharge electrodes 20 are directly inserted into the mounting box 70. After the two discharge electrodes 20 and the high voltage generating power supply 60 are connected in the mounting box 70, adhesive is poured and sealed, which can ensure that moisture does not enter the circuit portion and ensure that the device operates safely.

[0068] In some embodiments, the adhesive poured into the mounting box 70 may be epoxy resin, polyurethane, etc., to ensure the effect of sealing. They are resistant to high temperatures, so they are not easily deformed, while ensuring the device can operate safely, and can ensure the effect of sealing and prevent moisture from entering the circuit part. Referring to FIG. 1 and FIG. 2, in some embodiments, the mounting box 70 includes a first box part 701, a second box part 702, and an upper cover 703. The first box part 701 is detachably connected to the second box part 702, and the upper cover 703 is detachably connected to the first box part 701 and the second box part 702. The high voltage generating power supply 60 is attached to the first box part 701 and the second box part 702, and then the upper cover 703 is attached to the tip of the first box part 701 and the second box part 702, and the first box part 701 and the second box part 702 are closed, thereby improving the safety of mounting the high voltage generating power supply 60.

[0069] 1 and 2, in some embodiments, a first box portion 701 is connected to a second box portion 702 by a plurality of first connecting portions 704, which integrally connect the first box portion 701 to the second box portion 702 to form a mounting chamber, and the high voltage generating power supply 60 is firmly fixed to the mounting chamber.

[0070] 1 and 2, in some embodiments, the first connection portion 704 comprises a second fastening portion and a second fastening groove 7041, and when the second fastening portion is engaged with the second fastening groove 7041, the first box portion 701 and the second box portion 702 are fixedly connected.

[0071] 1 and 2, in some embodiments, the first box part 701 and the second box part 702 are provided with a second fastening portion 7041 on one side and a second fastening groove 7042 on the other side, so that when the first box part 701 and the second box part 702 are aligned, the second fastening portion 7041 engages with the second fastening groove 7042, thereby fixedly connecting the first box part 701 and the second box part 702.

[0072] In some embodiments, referring to Fig. 1 and Fig. 2, in some embodiments, a plurality of second protrusions 7043 are provided at the end of the first box part 701 facing the second box part 702, a second fastening groove 7041 is provided in the second protrusion 7043, a plurality of second grooves are provided in the periphery of the second box part 702 facing the first box part 701, and a second fastening part is provided in the second groove, and the shape of the second groove is consistent with the shape of the second protrusion 7043, and the size of the second groove is consistent with the size of the second protrusion 7043. When the second protrusion 7043 is correspondingly inserted into the second groove, the second fastening part is engaged with the second fastening groove 7041, and the first box part 701 and the second box part 702 are fixedly connected. Of course, in other embodiments, a plurality of second grooves may be provided at the end of the first box part 701 facing the second box part 702, and a plurality of second protrusions may be provided on the periphery of the second box part 702 facing the first box part 701.

[0073] 1 and 2, in some embodiments, the upper cover 703 is connected to the first box part 701 and the second box part 702 by the second connecting part 705, and the first box part 701 and the second box part 702 are sealed by the upper cover 703, so as to ensure the safety of the high voltage generating power supply 60.

[0074] Referring to Figures 1 and 2, in some embodiments, the second connection portion 705 comprises a third fastening portion 7051 and a third fastening groove 7052, and when the third fastening portion 7051 is engaged with the third fastening groove 7052, the upper cover 703 is fixedly connected to the first box portion 701 and the second box portion 702.

[0075] 1 and 2, in some embodiments, the top lid 703 has a third fastening portion 7051 between it and one of the first box part 701 and the second box part 702, and a third fastening groove 7052 between it and the other of the first box part 701 and the second box part 702. When the top lid 703 is aligned with the first box part 701 and the second box part 702, the third fastening portion 7051 engages with the third fastening groove 7052, thereby fixedly connecting the top lid 703 to the first box part 701 and the second box part 702.

[0076] 1 and 2, in some embodiments, a plurality of third protrusions 7053 are provided at the end of the upper cover 703 facing the first box part 701 and the second box part 702, a third fastening groove 7052 is formed in the third protrusion 7053, a plurality of third grooves 7054 are formed at the periphery of the second box part 702 and the first box part 701 facing the upper cover 703, and a third fastening portion 7051 is provided in the third groove 7054, and the shape of the third groove 7054 matches the shape of the third protrusion 7053, and the size of the third groove 7054 matches the size of the third protrusion 7053. When the third protrusion 7053 is correspondingly inserted into the third groove 7054, the third fastening portion 7051 is engaged with the third fastening groove 7052, thereby realizing a fixed connection between the upper cover 703 and the first box part 701 and the second box part 702. Of course, in other embodiments, a plurality of third grooves may be provided on the ends of the upper cover 703 facing the first box part 701 and the second box part 702, and a plurality of third protrusions may be provided on the periphery of the first box part 701 and the second box part 702 facing the upper cover 703.

[0077] 1 and 2, in some embodiments, for convenience of installation, the first box part 701 is connected to the first case 203, and the second box part 702 is connected to the second case 204. Specifically, when the first box part 701 and the first case 203 are integrated, and the second box part 702 and the second case 204 are integrated, the size can be optimized and the cost can be reduced.

[0078] 1 and 2, in some embodiments, when the first box part 701 is connected to the second box part 702, the first case 203 is connected to the second case 204 to form a T-shaped configuration for convenient installation. That is, the length of the first box part 701 is greater than the width of the first case 203, and the length of the second box part 702 is greater than the width of the second case 204, thereby forming a T-shaped configuration for convenient installation in the cooling duct 80.

[0079] In some embodiments, when the first case 203 and the second case 204 are attached to the air conditioning duct 80, the first box part 701 and the second box part 702 are attached between the internal foam of the air duct 80 by screws, and holes are drilled in the first case 203 and the second case 204 to avoid affecting the discharge effect of the two discharge electrodes 20 and ensure the purification effect.

[0080] According to another solution of the present disclosure, a refrigerator is provided, which employs the above purification device, and the specific configuration of the purification device can be referred to the above embodiments. The purification device employs all the technical means in all the above embodiments, and thus has at least all the beneficial effects of the technical means in the above embodiments, so that the description will not be repeated here.

[0081] FIG. 5 is a schematic diagram showing a refrigerator according to some embodiments of the present disclosure. FIG. 6 is a schematic diagram showing the configuration of a cooling duct according to some embodiments of the present disclosure. Referring to FIG. 5 and FIG. 6, in some embodiments, the refrigerator further includes a cooling duct 80, and the purifier is fixedly installed at the duct opening in the cooling duct 80. That is, the thread electrode 201 is attached to the first case 203, the plate electrode 202 is attached to the second case 204, the porous insulating dielectric 10 is installed in the receiving space formed by the first case 203 and the second case 204, and the high voltage generating power supply 60 is installed in the installation space formed by the first box part 701 and the second box part 702. The upper cover 703 seals the first box part 701 and the second box part 702. Next, the first box part 701 and the second box part 702 are installed between the inner bubbles in the cooling duct 80. The cooling air duct 80 transfers the air in the refrigerator to the purification device, and power is supplied to the thread electrode 201 and the plate electrode 202 by the high-voltage generating power supply 60. An ion electric field is formed between the thread electrode 201 and the plate electrode 202, and when the air enters the ion electric field, the porous insulating dielectric 10 and the two discharge electrodes 20 perform a medium barrier discharge to generate plasma, which decomposes the molecules of strange odors in the air, removes the strange odor, and ensures that there is no strange odor in the refrigerator.

[0082] 6, in some embodiments, the first box part 701 and the second box part 702 may be attached to the air duct exhaust port of the cooling air duct 80. Then, the air enters the ion electric field, and the porous insulating dielectric 10 and the two discharge electrodes 20 perform a medium barrier discharge to generate plasma, which decomposes the molecules of the strange smell in the air, removes the strange smell, and ensures that the refrigerator has no strange smell. Of course, in other embodiments, the first box part 701 and the second box part 702 may be attached to the air duct intake port of the cooling air duct 80.

[0083] Referring to Fig. 6, in some embodiments, in order to maximize the intake area, reduce wind resistance, and ensure the purification effect, the arrangement direction of the porous insulating dielectric 10 and the two discharge electrodes 20 is consistent with the direction of wind flow in the cooling air duct. That is, the porous insulating dielectric 10 and the two discharge electrodes 20 are all perpendicular to the direction of wind flow in the cooling air duct 80. That is, the thread electrode 201, the porous insulating dielectric 10, and the plate electrode 202 are all perpendicular to the direction of wind flow in the cooling air duct 80. The wind passes through the thread electrode 201, the porous insulating dielectric 10, and the plate electrode 202 in order, forming an ion field between the thread electrode 201 and the plate electrode 202. When the air enters the ion field, the porous insulating dielectric 10 and the two discharge electrodes 20 perform a medium barrier discharge, generating plasma, which decomposes the molecules of strange odors in the air, removes the strange odor, and ensures that there is no strange odor in the refrigerator. At the same time, since the thread-like electrode 201, the porous insulating dielectric 10 and the plate electrode 202 are perpendicular to the direction of air flow, even if water or foreign matter gathers on the thread-like electrode 201 or the plate electrode 202, the water or foreign matter will fall due to gravity, preventing the water or foreign matter from gathering on the discharge electrode 20. Without changing the gap between the thread-like electrode 201 and the plate electrode 202 and the porous insulating dielectric 10, and without causing any difference in dielectric constant, uniformity and stability are guaranteed for the voltage difference of the porous insulating dielectric 10, the discharge relationship between the discharge electrode 20 and the porous insulating dielectric 10 is optimized, and the phenomenon in which condensed water or foreign matter gathers on the discharge electrode 20 and thereby strengthens the discharge is reduced, the generation of ozone is reduced, and ignition is avoided.

[0084] 6, in some embodiments, air in the refrigerator enters the cooling duct 80 and is purified by a purification device, so that a cooling fan 90 is installed in the cooling duct 80. When the cooling fan 90 is started, the air in the refrigerator is blown out and circulated, and the air in the refrigerator enters the cooling duct 80 and is purified by the purification device. By repeatedly performing purification, purification can be performed continuously in a large space, and strange odors in the air can be removed, ensuring that there is no strange odor in the refrigerator.

[0085] In the description of the present application, orientations and positional relationships indicated by terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "top," "bottom," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "clockwise," "counterclockwise," and the like are orientations and positional relationships based on the drawings and are merely for the convenience of explaining or simplifying the description of the present application, and do not expressly or imply that such devices or elements must have a particular orientation or position or be configured in a particular direction or operation, and therefore cannot be construed as limitations on the present application.

[0086] Furthermore, the descriptions of "first", "second", etc. in this disclosure are for explanatory purposes only, and cannot be understood as expressing or implying their relative importance or implying the number of the mentioned technical features. Thus, features defined as "first" and "second" may include at least one of these features, either explicitly or implicitly. Furthermore, the technical means in each embodiment can be combined with each other, but this must be based on the realization by a person skilled in the art, and it should be understood that if the combination of technical means is inconsistent or cannot be realized, such combination of technical means does not exist and does not fall within the scope of the protection sought by this application.

[0087] In the description of this disclosure, unless otherwise expressly stated and limited, a first feature being "on" or "under" a second feature may include direct contact between the first feature and the second feature, or may include contact between the first feature and the second feature through another feature without direct contact between the first feature and the second feature. Furthermore, a first feature being "on," "upper," and "on the upper surface" of a second feature may include direct and diagonally above the second feature, or may simply indicate that the first feature is higher in height than the second feature. A first feature being "under," "lower," and "on the lower surface" of a second feature may include direct and diagonally below the second feature, or may simply indicate that the first feature is lower in height than the second feature.

[0088] In the description of this specification, the expressions "one embodiment", "some embodiments", "examples", "particular examples", or "some examples" mean that the specific features, structures, media or properties described with reference to this example or example are included in at least one embodiment or example in this application. In this specification, the description of the above expressions in a schematic manner does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, media or properties described can be combined in any one or more embodiments or examples in an appropriate manner. Furthermore, a person skilled in the art can combine or combine different embodiments or examples described in this specification.

[0089] Although the preferred embodiments of the present disclosure have been described, other changes and modifications can be made to these embodiments once those skilled in the art understand the basic concept of the inventive step. Therefore, the appended claims should be interpreted as including the preferred embodiments and any changes and modifications that fall within the scope of the present disclosure.

[0090] Obviously, those skilled in the art can make various modifications and variations to the present disclosure without departing from the spirit and scope of the present disclosure, and the present disclosure also includes these modifications and variations if they fall within the scope of the claims of the present disclosure and their equivalents. [Explanation of symbols]

[0091] 10 Porous insulating dielectrics 20 Two discharge electrodes 201 Thread electrode 202 Plate electrode 203 First Case 204 Second Case 2011 Strip electrode 2021 Net Hole 205 Fastening part 2051 First fastening part 2052 First retaining groove 2053 First convexity 2054 First groove 40 Position restriction section 50 Flexible section 501 Part 1 502 Second ring 60 High voltage power supply 70 Mounting box 701 First box part 702 Second box part 703 Upper lid 704 First Connection 7041 Second retaining groove 7043 Second convexity 705 Second Connection 7051 Third fastening part 7052 Third retaining groove 7053 Third protrusion 7054 Third groove 80 Air conditioning duct 90 Cooling fan

Claims

1. Two discharge electrodes; A porous insulating dielectric disposed between the two discharge electrodes; The two discharge electrodes are installed so that one of the discharge electrodes is in close contact with the porous insulating dielectric, and there is a gap between the other discharge electrode and the porous insulating dielectric.

2. 2. The purification device of claim 1, wherein the porous insulating dielectric material comprises honeycomb ceramics.

3. 2. The purification device of claim 1, wherein the porous insulating dielectric is coated with a catalytic medium.

4. 4. The purification device according to claim 1, wherein one of the two discharge electrodes is a thread-like electrode and the other of the two discharge electrodes is a plate-like electrode.

5. 5. The purification device according to claim 4, wherein the thread-like electrode is installed so as to be in close contact with the porous insulating dielectric, and a gap is provided between the plate-like electrode and the porous insulating dielectric.

6. 5. The purification device according to claim 4, wherein a gap between said plate electrode and said porous insulating dielectric is 3 mm or more.

7. 5. The purification device according to claim 4, wherein the filamentary electrode includes a plurality of strip electrodes arranged in parallel.

8. 5. The purification device according to claim 4, wherein the plate electrode has mesh holes formed therein.

9. The edge of the thread-like electrode is fitted into a first case, and the edge of the plate-like electrode is fitted into a second case, The purification device according to claim 4, wherein the first case is detachably connected to the second case.

10. The thread-like electrode and the first case are integrally molded, 10. The purification device according to claim 9, wherein the plate electrode and the second case are integrally formed.

11. 10. The purification device according to claim 9, wherein the second case is provided with a position limiting portion that is pressed against the porous insulating dielectric.

12. 10. The purification device according to claim 9, wherein a flexible portion is provided between a periphery of the porous insulating dielectric and the second case.

13. 10. The purification device of claim 9, wherein the first case is connected to the second case by a plurality of fastening portions.

14. The purification device according to any one of claims 1 to 3, further comprising a high voltage power supply and a mounting box for receiving the high voltage power supply, the high voltage power supply being connected to the two discharge electrodes.

15. The purification device according to claim 14, characterized in that the two discharge electrodes pass through the mounting box and are connected to the high voltage power supply.

16. A refrigerator comprising the purification device according to any one of claims 1 to 15.

17. The refrigerator further includes a cooling duct, 17. The refrigerator according to claim 16, wherein the purification device is fixedly installed at an opening of the cooling air duct.

18. 18. The refrigerator according to claim 17, wherein an arrangement direction in which the porous insulating dielectric and the two discharge electrodes are arranged coincides with a direction in which air flows in the cooling air duct.

19. 18. The refrigerator according to claim 17, wherein a cooling fan is installed in the cooling duct.

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