CN213931654U - Parallel purification device and refrigerator - Google Patents

Abstract

The utility model discloses a parallel purification device, which comprises a power module, an air circulation module, an ion purification module and a shell; be provided with air intake and air outlet on the casing, power module, air cycle module and ion purification module set up side by side in the casing, power module to ion purification module provides high voltage power supply, air cycle module can drive the air and pass through ion purification module circulation, ion purification module includes first electrode, second electrode, third electrode and catalytic medium, first electrode, second electrode and third electrode are arranged in proper order, catalytic medium has two, sets up respectively first electrode with between the second electrode with between the third electrode. Has the advantages of compact structure and good catalytic decomposition effect on peculiar smell molecules. The utility model also provides a refrigerator.

Description

Parallel purification device and refrigerator

Technical Field

The utility model relates to a refrigerator removes the flavor, specifically relates to a block form purifier. Furthermore, the utility model discloses still relate to a refrigerator.

Background

When the refrigerator refrigerating chamber is used, a large amount of smell can be generated on food stored in the refrigerator due to long-time sealing, and the smell generated by different foods is mixed, so that unpleasant peculiar smell can be generated, and the use experience of a user is influenced. In order to remove the bad smell in the refrigerator, more and more smell-clearing technologies are used in the refrigerator.

The plasma purification technology has better smell removal effect, and the plasma purification module is increasingly used for removing smell in the refrigerator. But the survival time of the plasma is shorter, the contact time of the peculiar smell molecules and the plasma in the traditional purification module is shorter, and the purification degree of a single circulation is lower. Meanwhile, the traditional plasma purification module mostly depends on a refrigerator refrigerating fan to circulate, and when the refrigerating fan stops working, plasmas generated by the plasma purification module are different and effectively contacted with peculiar smell molecules in the refrigerator, so that the odor purification and sterilization effects of the plasma purification module are influenced.

With the development of technology, a technology of disposing a catalytic medium in a high-voltage discharge field of a plasma purification module has appeared. The plasma generated by high-voltage discharge promotes the decomposition of the peculiar smell molecules under the action of the catalyst, improves the contact and reaction time of the peculiar smell molecules with the catalytic medium and the plasma, and effectively increases the smell purification speed of the purification module. Meanwhile, the purification module is usually provided with a fan for active air circulation, so that the effect of odor purification and sterilization of the whole space in the refrigerator is realized conveniently.

The existing plasma purification module with the catalytic medium is large in ventilation area of the catalytic medium in order to increase the contact area between odor molecules and the catalytic medium, and is provided with a fan for promoting air circulation, so that the size and specification are large, the existing plasma purification module can be placed at the top or the back of a refrigerator only as an independent external part, and the storage space in the refrigerator is occupied. In addition, the number of positive and negative ions generated by the existing plasma purification module is the same, the survival time of the ions is short, the propagation distance is short, and the whole space odor purification of the refrigerator is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a block form purifier is provided, compact structure, peculiar smell molecule is long with catalytic medium's contact time, and the net flavor is effectual.

The utility model discloses a further technical problem that will solve provides a refrigerator, and the odor purification device size is little, sets up conveniently and odor purification is effectual.

In order to solve the technical problem, the utility model provides a parallel purification device on one hand, which comprises a power module, an air circulation module, an ion purification module and a shell; be provided with air intake and air outlet on the casing, power module, air cycle module and ion purification module set up side by side in the casing, power module to ion purification module provides high voltage power supply, air cycle module can drive the air and pass through ion purification module circulation, ion purification module includes first electrode, second electrode, third electrode and catalytic medium, first electrode, second electrode and third electrode are arranged in proper order, catalytic medium has two, sets up respectively first electrode with between the second electrode with between the third electrode.

Preferably, the first electrode and the third electrode are plate-shaped electrodes, and a plurality of vent holes are arranged on the plate-shaped electrodes; the second electrode is a linear electrode. Through the preferred technical scheme, the discharge between the plate-shaped electrode and the linear electrode is more uniform, more plasmas are generated, and the generation of ozone can be reduced. The setting of ventilation hole can make things convenient for the passing through of air.

Further preferably, the distribution rate of the vent holes on the plate-shaped electrode is more than 70%; the width of the lines of the linear electrodes is 0.5-1.5mm, and the distance between the lines is larger than 2 mm. In the preferred embodiment, the porosity is a ratio of the area of all the vent holes in the plate-like electrode to the total area (including holes) of the plate-like electrode. The higher porosity is more beneficial to the passing of the plasma generated by discharge. The reasonable line width and line spacing of the line-shaped electrodes are favorable for improving the uniformity of discharge and the generation quantity of plasma.

Furthermore, the thickness of the first electrode, the thickness of the second electrode and the thickness of the third electrode are all 0.2-3mm, and each electrode is made of stainless steel, copper or aluminum alloy. In the preferred technical scheme, reasonable electrode thickness can not only ensure the strength and the anti-corrosion capability of the electrode, but also reduce the weight and the volume of the electrode.

Preferably, the distance between the first electrode, the second electrode and the third electrode and the adjacent catalytic media is 0-5 mm. Through the preferred technical scheme, the electrodes can discharge along the surface of the catalytic medium, so that the generated plasma is more favorably contacted with the peculiar smell molecules on the surface of the catalytic medium, and the peculiar smell molecules are promoted to be decomposed under the catalysis of the catalytic medium.

As a preferred technical scheme, the catalytic medium is formed by coating catalytic materials on an insulating framework, and the ventilation area of the insulating framework is 1-20mm²The ventilation holes; the thickness of the catalytic medium is 5-20mm, and the thickness of the inner wall is 0.3-3 mm. By the preferred technical scheme, the catalyst isThe surface area of the medium is larger, the contact time of the plasma and the peculiar smell molecules on the surface of the catalytic medium can be prolonged, and the peculiar smell purifying effect of the purifying device is improved. The reasonable thickness of the catalytic medium is more beneficial to the discharge between the electrodes, ensures the amount of plasma generated by the discharge and inhibits the generation of ozone.

Further preferably, the catalytic material includes a copper manganese-based catalyst and a transition metal catalyst, and the transition metal catalyst is at least one of titanium oxide, zinc oxide, silver oxide, and cobalt oxide. In the preferred technical scheme, the copper-manganese catalyst can adsorb and degrade odor molecules and increase the contact between the odor molecules and the copper-manganese catalyst, and can be used as an ozone catalyst to rapidly decompose and eliminate a small amount of ozone generated by discharge. The transition metal catalyst has better effect of catalyzing and decomposing the peculiar smell molecules, and improves the decomposition efficiency of the peculiar smell molecules.

Preferably, the power supply module applies a high voltage positive voltage to the first electrode and the third electrode, and applies a high voltage negative voltage to the second electrode, and a difference between an absolute value of the high voltage negative voltage and an absolute value of the high voltage positive voltage is greater than 1 kv. In the preferred technical scheme, electrons on the second electrode can discharge to the first electrode and the third electrode under the action of high voltage, so that air on a discharge path is ionized to generate positive ions and negative ions. Because the voltage value of high-pressure negative voltage is higher, therefore can produce more anions, improve the utility model discloses a block form purifier's purifying effect to have better food fresh-keeping effect.

As a preferred technical solution, the power module is adapted to output a high-frequency single-pulse power; the pulse duty ratio of the high-frequency single-pulse power supply is less than 50%, and the peak voltage is 2-10 KV. Through the preferred technical scheme, the discharge between the positive electrode and the negative electrode can be carried out discontinuously, on the basis of ensuring the air ionization of the ion field area, the discharge time is reduced, and the generation amount and the accumulation amount of ozone are reduced. And can reduce the consumption of the power, facilitate the regulation of the discharge time.

Preferably, the housing is flat, and the power module, the air circulation module and the ion purification module are arranged in parallel along the length direction in the housing; and the power module and a connecting circuit between the air circulation module and the ion purification module are sealed by waterproof glue. In this preferred technical scheme, power module, air cycle module and ion purification module set up side by side in the casing of platykurtic, make the utility model discloses a parallel purifier's structure can set up compacter to do not hinder the air and circulate through ion purification module under air cycle module's drive. The connection circuit is sealed by waterproof glue, so that the reliability of the circuit in a low-temperature high-humidity environment can be improved, and the high-voltage circuit can be prevented from discharging in the high-humidity environment.

The utility model discloses the second aspect provides a refrigerator, include the utility model discloses the block form purifier that the first aspect provided.

Through the technical scheme, the utility model discloses a block form purifier sets up power module, air cycle module and ion purification module side by side in the casing for purifier's structure is compacter. The ion purification module is by three electrode, and two-stage high pressure ion field structure that two catalytic media constitute makes the circulation pass through the utility model discloses block form purifier's air can pass through two high pressure plasma fields through the single circulation, has prolonged the contact time of peculiar smell molecule with catalytic media and plasma, and the effect of cleaing away to the peculiar smell molecule in the circulating air is better. Can reduce the filtration area of ion purification module under the prerequisite of guaranteeing the same odor-free effect, make the utility model discloses a block form purifier's space occupies littleer. The utility model provides a refrigerator has adopted the utility model discloses a block form purifier, peculiar smell purifying effect is good, and purifier's volume is littleer, can freely set up the inside at parts such as the wind channel of refrigerator, drawer, fruit vegetables box, has reduced occuping to limited storage space in the refrigerator.

Other technical features and advantages of the present invention will be further described in the following detailed description.

Drawings

FIG. 1 is a schematic structural diagram of one embodiment of a parallel purification apparatus of the present invention;

FIG. 2 is a schematic view of one embodiment of a plate electrode of the present invention;

fig. 3 is a schematic view of one embodiment of a wire-like electrode of the present invention;

figure 4 is a schematic representation of one embodiment of the catalytic media of the present invention.

Description of the reference numerals

1 power module 2 air circulation module

3 ion purification Module 31 first electrode

32 second electrode 33 third electrode

34 catalytic media 341 ventilation holes

35 vent 36 line

37 circuit connecting hole 4 casing

41 air inlet and 42 air outlet

43 case 44 rear cover

Detailed Description

In the present invention, unless otherwise specified, the positional or orientational relationships indicated by the terms "upper" and "lower" are used to describe the devices or components based on the positional or orientational relationships shown in the drawings.

In the present description, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit indication of the number of technical features indicated, and therefore, the features defined as "first", "second", "third" may explicitly or implicitly include one or more of the features described.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, and for example, the term "connected" may be a fixed connection, a detachable connection, or an integral connection; either directly or indirectly through intervening media, either internally or in any combination thereof. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The following detailed description of the embodiments of the present invention is provided in conjunction with the accompanying drawings, and it should be understood that the embodiments described herein are merely for purposes of illustration and explanation, and the scope of the present invention is not limited to the following embodiments.

As shown in fig. 1, an embodiment of the parallel purification apparatus of the present invention includes a power module 1, an air circulation module 2, an ion purification module 3, and a housing 4. The housing 4 may be designed to include a housing box 43 and a rear cover plate 44, the power module 1, the air circulation module 2 and the ion purification module 3 are sequentially arranged in the housing box 43 in parallel, an air inlet 41 is formed at one end of the housing box 43 where the ion purification module 3 is located, and an air outlet 42 is formed at a position of the rear cover plate 44 facing the air circulation module 2. The air circulation module 2 may be any suitable component capable of driving air circulation, such as various forms of fans, air pumps, etc. Driven by the air circulation module 2, air enters the housing 4 from the air inlet 41, flows through the ion purification module 3 and the air circulation module 2, and flows out of the housing 4 from the air outlet 42. The power module 1 can convert low-voltage direct current taken from the refrigerator into a high-voltage power supply with high frequency and high voltage, and transmit the high-voltage power supply to the ion purification module 3. The high voltage referred to in the present invention is a voltage above 1 KV. The ion purification module 3 includes a first electrode 31, a second electrode 32, a third electrode 33 and catalytic media 34, the first electrode 31, the second electrode 32 and the third electrode 33 are sequentially arranged in the housing box 43, and the two catalytic media 34 are respectively disposed between the first electrode 31 and the second electrode 32 and between the second electrode 32 and the third electrode 33. Under the action of the high-voltage power supply, discharge is respectively carried out between the first electrode 31 and the second electrode 32 and between the second electrode 32 and the third electrode 33 along the surfaces of the two catalytic media 34, so that air on the surfaces of the two catalytic media 34 is ionized, a large amount of plasma is generated, and two high-voltage plasma fields between the first electrode 31 and the second electrode 32 and between the second electrode 32 and the third electrode 33 are formed. The surface of the catalytic medium 34 is provided with a catalyst capable of promoting the decomposition of the odor molecules in the air in the refrigerator, and the odor molecules in the air are removed due to the decomposition under the combined action of the plasma and the catalyst, so that the odor in the refrigerator is purified. Because the air enters the two high-pressure plasma fields in sequence in the circulating process, peculiar smell molecules can contact with the plasma and the catalyst in the two plasma fields, the contact time is longer, and the peculiar smell purification effect is better. Because the utility model discloses an ion purification module 3's purifying effect is better, therefore can set up ion purification module 3's purification area less, makes the utility model discloses a block form purifier's size can be done littleer, has improved the utility model discloses a block form purifier's suitability.

In some embodiments of the parallel purifying apparatus of the present invention, as shown in fig. 2 and 3, the first electrode 31 and the third electrode 33 are plate-shaped electrodes, which can be made of various conductive materials with certain anti-corrosion performance, and are usually made of metal materials or alloy materials. A plurality of vent holes 35 may be provided in the plate electrode to facilitate the passage of air through the vent holes 35 into sufficient contact with the catalytic media 34. The vent holes 35 may be formed in various possible shapes such as a circle, a square or a triangle, and the area of the vent holes 35 is usually set to 20mm²Hereinafter, a circular hole having a diameter of 3mm is preferably used. The second electrode 32 is a line-shaped electrode, and the line-shaped electrode is formed by connecting two ends of a plurality of conductive lines 36. One end of each of the plate-shaped electrode and the linear electrode is provided with a circular hole with the diameter of 0.6mm as a circuit connecting hole 37, so that the high-voltage power supply can be conveniently connected with each electrode. When discharging between the linear strip electrodes and the plate electrodes under the action of the high-voltage power supply, the discharge can be carried out in a larger area range, the discharge is more uniform, and more plasmas are generated by the discharge.

In some embodiments of the parallel purification apparatus of the present invention, as shown in fig. 2 and 3, the distribution ratio of the vent holes 35 on the plate-shaped electrode is greater than 70%. In general, a plurality of vent holes 35 on the plate-shaped electrode are uniformly distributed on the plate-shaped electrode, and the periphery of the vent holes 35 forms a uniform conductive structure. The large hole distribution rate is beneficial to the stable passing of air, the weight of the plate-shaped electrode can be reduced, and the uniform conductive structure is beneficial to the uniform discharge of the electrode. The width of the line 36 of the line-shaped electrode is 0.5-1.5mm, which not only can ensure the mechanical strength and the anti-corrosion capability of the line 36, but also can reduce the material occupation of the electrode and reduce the weight of the electrode. The distance between the lines 36 is larger than 2mm, so that the discharge positions on the electrodes can be prevented from being excessively concentrated, and the uniformity of discharge is improved.

As a specific implementation mode of the parallel purification device of the present invention, the thickness of the first electrode 31, the second electrode 32 and the third electrode 33 is 0.2-3mm, which can ensure the strength of the electrodes and avoid the electrodes from being too heavy and consuming more materials. Each electrode can be made of stainless steel, copper or aluminum alloy, and different electrodes can be made of the same material or different materials.

In some embodiments of the parallel purification apparatus of the present invention, the distances between the first electrode 31, the second electrode 32, and the third electrode 33 and the adjacent catalytic media 34 are all 0-5 mm. The distance between each electrode and the adjacent catalytic media may or may not be equal. The proper distance is more beneficial to large-area discharge between the positive electrode and the negative electrode along the surface of the catalytic medium, and the phenomenon that high voltage directly breaks through air in the catalytic medium to form discharge or partial concentrated discharge in the catalytic medium to form the so-called creepage phenomenon is prevented.

In some embodiments of the parallel purification apparatus of the present invention, as shown in fig. 4, the catalytic media 34 is made of an insulating frame coated with catalytic material. Generally, the catalytic media 34 may be formed by calcining a composite of metal oxide, pore-forming agent and clay, the clay inside is sintered to form an insulating framework, the metal oxide on the surface layer forms a catalytic material for catalytically decomposing the odor molecules, the pore-forming agent forms a large number of pores on the surface layer and inside of the catalytic media,the surface area of the catalytic medium is greatly improved, and reaction sites for odor adsorption and catalytic decomposition are formed. The ventilation area on the insulating framework is 1-20mm²The cross-sectional shape of the ventilation hole 341 may be circular, square, or polygonal, etc., and a large number of pores may be formed inside the ventilation hole 341. The thickness of the catalytic medium 34 is 5-20mm, which can form a proper discharge distance between the discharge electrodes, ensure a proper discharge intensity, generate more plasmas and reduce the generation amount of ozone. The thickness of the inner wall of the catalytic media 34 is 0.3-3mm, which is beneficial to improving the surface area of the catalytic media 34 and ensuring the mechanical strength of the catalytic media.

As a specific implementation mode of the parallel purification device of the utility model, the catalytic material is a catalyst with copper-manganese-based oxide as a main part and transition metal oxide as an auxiliary part. As a preferable scheme, the catalytic material contains 30-60% of copper manganese oxide and 3-10% of transition metal oxide. The transition metal oxide is one or more of titanium oxide, zinc oxide, silver oxide and cobalt oxide. The copper manganese oxide as a catalyst can adsorb and degrade peculiar smell molecules on one hand, and can be used as an ozone catalyst on the other hand to rapidly eliminate a small amount of ozone generated by discharge. The transition metal oxide as a catalyst can better promote the decomposition of odor molecules and has higher catalytic efficiency.

In some embodiments of the parallel purification apparatus of the present invention, the power module 1 applies a positive high voltage to the first electrode 31 and the third electrode 33, and a negative high voltage to the second electrode 32. In this way, high voltages are formed between the first electrode 31 and the second electrode 32 and between the third electrode 33 and the second electrode 32, so that plasma can be generated by discharge. In addition, the absolute value of the high-voltage negative voltage applied to the second electrode 32 is at least 1kv higher than the absolute value of the high-voltage positive voltage applied to the first electrode 31 and the third electrode 33, so that more negative ions beneficial to human bodies and food materials can be generated in the high-voltage plasma field, and the fresh-keeping effect of the refrigerator is improved.

In some embodiments of the parallel purification apparatus of the present invention, the power module 1 can output a high-frequency single pulse power. The output voltage value of the single-pulse power supply is changed alternately between high voltage and zero voltage, when the output voltage value is at the peak value of the pulse, the high voltage is output, and the voltage difference value between the electrodes is maximum, so that the air in the area between the electrodes is quickly ionized; when the pulse is at the valley value of the pulse, the output voltage is zero, the discharge between the electrodes is not carried out any more, and the ozone generated by the discharge at the peak value of the pulse can be quickly decomposed under the action of the copper-manganese-based catalyst, so that the generation amount and the accumulation amount of the ozone in the circulating air are reduced. Through the selection of the pulse frequency and the duty ratio of the power supply, the output time of high voltage can be reduced on the basis of keeping the air particle ionization through a high-voltage plasma field, the service life of the power supply is prolonged, the discharging time between electrodes is reduced, and the power consumption of a power supply module is reduced. Generally, the higher the discharge voltage between the electrodes, the longer the duration of the discharge, and the greater the amount of ozone produced by the discharge. In a preferred embodiment, the pulse duty ratio of the high-frequency single pulse power supply is less than 50%, and the peak voltage of the pulse is 2-10KV, so that more plasma is generated in the high-voltage plasma field, and the generation amount and the accumulation amount of ozone are less.

As a specific embodiment of the parallel purification device of the present invention, the housing 4 is flat, and as a preferred embodiment, the housing 4 has a length of 116mm, a width of 50mm, and a thickness of 18 mm. The power module 1, the air circulation module 2 and the ion purification module 3 are arranged in parallel along the length direction in the housing 4. The power module 1 and the connection circuit part between the power module and the air circulation module 2 and between the power module and the ion purification module 3 are sealed by waterproof glue, so that the power supply circuit is prevented from being damaged by a low-temperature high-humidity environment or the discharge of a high-voltage circuit is prevented, and the service life of the product under the low-temperature high-humidity condition is ensured.

Through the technical scheme, the utility model discloses a block form purifier, its ion purification module 3's three high-voltage electrode, two independent high-pressure plasma fields are formed in the ion purification module in the setting of two catalytic media 34, make the air loop through two high-pressure plasma fields in the single circulation, peculiar smell molecule in the air keeps the contact of longer time with plasma and catalytic media in two high-pressure plasma fields, more peculiar smell molecules are decomposed and are got rid of, therefore the purifying effect of peculiar smell is better, and the size of ion purification module 3 can set up littleer. Make with power module 1, air cycle module 2 and the setting that ion purification module 3 set up side by side in casing 4 the utility model discloses a parallel purifier's structure is compacter. Therefore, the utility model discloses a block form purifier can make littleer, therefore can be in the free setting of refrigerator to storage space's in the refrigerator occupy has been reduced. In the preferred embodiment of the utility model, the higher negative voltage applied on the discharge electrode can make the high-voltage discharge generate more negative ions beneficial to human body and food materials, thus improving the fresh-keeping effect of the refrigerator; the waterproof sealing structure of the power circuit and the use of the pulse power supply form better protection to the circuit, reduce the amount of ozone generated and accumulated by discharge and ensure the service life of the product under the condition of low temperature and high humidity.

The utility model provides a refrigerator has used the utility model discloses a block form purifier can place refrigerator wind channel with purifier inside, carries out the odor purification of air in the refrigerator through the initiative of the air in the wind channel, the passive circulation and disinfects, also can place odor purification device in the drawer of refrigerator, in the fruit vegetables box wait the position carry out odor purification and disinfect, sets up more convenient, nimble, and purifying effect is also better.

In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "a specific implementation," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In the present disclosure, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. The technical idea of the present invention is that it is possible to combine the simple variants of the technical solution of the present invention, including each specific technical feature, in any suitable way. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

Claims (10)

1. A parallel purification device is characterized by comprising a power supply module (1), an air circulation module (2), an ion purification module (3) and a shell (4); an air inlet (41) and an air outlet (42) are arranged on the shell (4), the power module (1), the air circulation module (2) and the ion purification module (3) are arranged in parallel in the shell (4), the power supply module (1) provides high-voltage power supply for the ion purification module (3), the air circulation module (2) can drive air to circulate through the ion purification module (3), the ion purification module (3) comprises a first electrode (31), a second electrode (32), a third electrode (33) and a catalytic medium (34), the first electrode (31), the second electrode (32) and the third electrode (33) are arranged in sequence, the two catalytic media (34) are respectively arranged between the first electrode (31) and the second electrode (32) and between the second electrode (32) and the third electrode (33).

2. Side-by-side purification device according to claim 1, wherein the first electrode (31) and the third electrode (33) are plate-shaped electrodes provided with a plurality of ventilation holes (35); the second electrode (32) is a linear electrode.

3. Parallel purification apparatus according to claim 2, wherein the distribution porosity of the ventilation holes (35) on the plate-shaped electrodes is greater than 70%; the width of the lines (36) of the linear electrode is 0.5-1.5mm, and the distance between the lines (36) is larger than 2 mm.

4. Side-by-side purification apparatus according to claim 3, wherein the first electrode (31), the second electrode (32) and the third electrode (33) are each 0.2-3mm thick, and each electrode is formed from stainless steel, copper or an aluminum alloy.

5. Side-by-side purification device according to claim 1, wherein the distance between the first (31), second (32) and third (33) electrodes and the adjacent catalytic media (34) is 0-5 mm.

6. Parallel purification apparatus according to claim 1, wherein the catalytic media (34) is formed by coating catalytic material on an insulating frame, the ventilation area of which is 1-20mm²The ventilation hole (341); the thickness of the catalytic medium (34) is 5-20mm, and the thickness of the inner wall is 0.3-3 mm.

7. Parallel purification apparatus according to claim 1, wherein the power supply module (1) has a high voltage positive voltage applied to the first and third electrodes (31, 33) and a high voltage negative voltage applied to the second electrode (32), the difference between the absolute value of the high voltage negative voltage and the absolute value of the high voltage positive voltage being greater than 1 kv.

8. Parallel purification apparatus according to claim 1, wherein the power module (1) is adapted to output a high frequency single pulse power supply; the pulse duty ratio of the high-frequency single-pulse power supply is less than 50%, and the peak voltage is 2-10 KV.

9. Parallel purification apparatus according to claim 1, wherein the housing (4) is flat, and the power module (1), the air circulation module (2) and the ion purification module (3) are arranged side by side in the length direction in the housing (4); and the power module (1) and a connecting circuit between the air circulation module (2) and the ion purification module (3) are sealed by waterproof glue.

10. A refrigerator characterized by comprising the parallel purifying apparatus as recited in any one of claims 1 to 9.

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