CN220818009U - Air purification module and air purification device - Google Patents
Air purification module and air purification device Download PDFInfo
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- CN220818009U CN220818009U CN202322678133.1U CN202322678133U CN220818009U CN 220818009 U CN220818009 U CN 220818009U CN 202322678133 U CN202322678133 U CN 202322678133U CN 220818009 U CN220818009 U CN 220818009U
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- 238000004887 air purification Methods 0.000 title claims abstract description 117
- 239000000463 material Substances 0.000 claims abstract description 115
- 239000003054 catalyst Substances 0.000 claims abstract description 60
- 239000002245 particle Substances 0.000 claims abstract description 42
- 239000003463 adsorbent Substances 0.000 claims abstract description 24
- 238000004140 cleaning Methods 0.000 claims description 29
- 229910000510 noble metal Inorganic materials 0.000 claims description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 16
- 239000011572 manganese Substances 0.000 claims description 14
- -1 manganese aluminum Chemical compound 0.000 claims description 13
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 12
- 229910052723 transition metal Inorganic materials 0.000 claims description 12
- 150000003624 transition metals Chemical class 0.000 claims description 12
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Abstract
The application discloses an air purification module and an air purification device, and relates to the field of air purification. The air purification module includes: an insulating honeycomb structure having a second insulating honeycomb positioned on an air-out side of the first insulating honeycomb, the insulating honeycomb structure having a first side positioned on an air-in side of the first insulating honeycomb, a second side positioned between the first and second insulating honeycombs, a third side positioned on the air-out side of the second insulating honeycomb; and a non-thermal plasma generator having a discharge electrode provided on one of the first side and the second side of the insulating honeycomb structure, and a counter electrode provided on one of the second side and the third side of the insulating honeycomb structure; the first and second insulating honeycombs are loaded with first and second materials, respectively, which are catalysts that can cooperate with active particles generated by ionization of the nonthermal plasma generator, or which are adsorbents. The air purification module does not need to be replaced, does not need to be equipped with an ultraviolet lamp to be used independently, can remove byproducts such as ozone and the like, and avoids secondary pollution.
Description
Technical Field
The present utility model relates to the field of air purification technology, and more particularly, to an air purification module and an air purification apparatus.
Background
At present, non-regenerative adsorption, chemical catalysis and other modes are adopted in household appliances to perform air purification and peculiar smell removal.
The traditional non-regenerated adsorption technology has the problem of secondary pollution after adsorption saturation, and the adsorption material needs to be replaced periodically; the adsorption material with relatively low price can be replaced regularly, but the replacement of the adsorption material with relatively high price is a problem to be solved urgently.
For commercial catalysts, the catalytic reaction is relatively single and cannot cover all contaminants. Even relatively universal catalysts have different catalytic activities when facing different contaminants, and cannot achieve the effect of being able to remove all contaminants efficiently.
At present, the air purification treatment by adopting the plasma discharge technology mainly aims at the rapid treatment scene of large-flow and high-concentration polluted waste gas in industry or commerce, and mainly relies on high-concentration ozone and other active substances for treatment, and the treatment process has high energy consumption and generates secondary pollution such as ozone, nitrogen oxides and the like. There are few cases in which the plasma discharge technology is applied to the removal of indoor pollutants because secondary pollution is generated while air purification is performed by using the plasma discharge technology.
Therefore, the modes of non-regenerative adsorption, chemical catalysis, plasma discharge technology and the like adopted in the current household appliances all have certain limitations and negative problems.
Disclosure of utility model
The main purpose of the embodiment of the utility model is to provide an air purification module and an air purification device using the same, wherein the air purification module of the embodiment of the utility model uses a non-thermal plasma generator as an energy source to generate active particles, and the active particles can be cooperated with a catalyst in an insulating honeycomb structure to degrade peculiar smell and purify air, so that the condition that the traditional adsorption technology is invalid after saturation is avoided; the catalyst in the air purification module can eliminate byproducts such as ozone and the like generated by a non-thermal plasma generator, so that the mineralization rate of pollutants is improved, and secondary pollution is avoided; and the first insulated honeycomb supported catalyst and the second insulated honeycomb supported catalyst or adsorbent form different combinations schemes, different types of contaminants can be removed.
The embodiment of the utility model provides an air purification module, which comprises:
An insulating honeycomb structure comprising a first insulating honeycomb and a second insulating honeycomb disposed opposite each other, the second insulating honeycomb being positioned on an air-out side of the first insulating honeycomb, the insulating honeycomb structure having a first side positioned on an air-in side of the first insulating honeycomb, a second side positioned between the first insulating honeycomb and the second insulating honeycomb, and a third side positioned on an air-out side of the second insulating honeycomb; and
A non-thermal plasma generator comprising a discharge electrode disposed on one of a first side and a second side of the insulating honeycomb structure and a counter electrode disposed on one of the second side and a third side of the insulating honeycomb structure;
The first insulating honeycomb is loaded with a first material which is arranged as a catalyst capable of cooperating with active particles generated by ionization of the non-thermal plasma generator to perform air purification, and the second insulating honeycomb is loaded with a second material which is arranged as a catalyst or adsorbent capable of cooperating with active particles generated by ionization of the non-thermal plasma generator to perform air purification.
In some exemplary embodiments, the discharge electrode is disposed on a first side of the insulating honeycomb structure, and a gap between the discharge electrode and an air inlet end face of an air inlet side of the first insulating honeycomb is 0-0.5mm; or (b)
The discharge electrode is arranged on the second side of the insulating honeycomb structure, the gap between the discharge electrode and the air outlet end face of the air outlet side of the first insulating honeycomb is 0-0.5mm, and the gap between the discharge electrode and the air inlet end face of the air inlet side of the second insulating honeycomb is 0-0.5mm.
In some exemplary embodiments, the discharge electrode is disposed on a first side of the insulating honeycomb structure, and the discharge electrode is proximate an air inlet end face of an air inlet side of the first insulating honeycomb; or (b)
The discharge electrode is arranged on the second side of the insulating honeycomb structure, and is clung to the air outlet end face of the air outlet side of the first insulating honeycomb and the air inlet end face of the air inlet side of the second insulating honeycomb.
In some exemplary embodiments, the counter electrode is disposed on the second side of the insulating honeycomb structure, and a gap between the counter electrode and an air outlet end face of an air outlet side of the first insulating honeycomb is 0-0.5mm, and a gap between the counter electrode and an air inlet end face of an air inlet side of the second insulating honeycomb is 0-0.5mm; or (b)
The counter electrode is arranged on the third side of the insulating honeycomb structure, and a gap between the counter electrode and the air outlet end face of the air outlet side of the second insulating honeycomb is 0-0.5mm.
In some exemplary embodiments, the counter electrode is disposed on the second side of the insulating honeycomb structure, and the counter electrode is in close proximity to an air-out end face of the air-out side of the first insulating honeycomb and an air-in end face of the air-in side of the second insulating honeycomb; or (b)
The counter electrode is arranged on the third side of the insulating honeycomb structure, and the counter electrode is clung to the air outlet end face of the air outlet side of the second insulating honeycomb.
In some exemplary embodiments, the discharge electrode and the counter electrode are each disposed on the second side of the insulating honeycomb structure, and the discharge electrode and the counter electrode are alternately disposed at intervals, and a space between the discharge electrode and the counter electrode is 7mm to 23mm.
In some exemplary embodiments, the discharge electrode is disposed on a first side of the insulating honeycomb structure, the counter electrode is disposed on a second side of the insulating honeycomb structure, and projections of the discharge electrode and the counter electrode on an air inlet end face of an air inlet side or an air outlet end face of an air outlet side of the first insulating honeycomb are at least partially overlapped or staggered; or alternatively
The discharge electrode is arranged on the second side of the insulating honeycomb structure, the counter electrode is arranged on the third side of the insulating honeycomb structure, and projections of the discharge electrode and the counter electrode on the air inlet end face of the air inlet side or the air outlet end face of the air outlet side of the second insulating honeycomb are at least partially overlapped or staggered.
In some exemplary embodiments, the discharge electrode is disposed on a first side of the insulating honeycomb structure, the counter electrode is disposed on a second side of the insulating honeycomb structure, projections of the discharge electrode and the counter electrode on an air inlet end face of an air inlet side or an air outlet end face of an air outlet side of the first insulating honeycomb are disposed in a staggered manner, and a distance between projections of the discharge electrode and the counter electrode on the air inlet end face of the air inlet side or the air outlet end face of the air outlet side of the first insulating honeycomb is not greater than 5mm, and a distance between the discharge electrode and the counter electrode is 10mm-25mm; or alternatively
The discharge electrode set up in insulating honeycomb's second side, the counter electrode set up in insulating honeycomb's third side, the discharge electrode with the projection dislocation set on the air inlet terminal surface of second insulating honeycomb's air inlet side or the air-out terminal surface of air-out side, just the discharge electrode with the counter electrode is in the interval between the projection on the air inlet terminal surface of second insulating honeycomb's air inlet side or the air-out terminal surface of air-out side is not more than 5mm, the discharge electrode with interval between the counter electrode is 10mm-25mm.
In some exemplary embodiments, one side of the discharge electrode is provided with the counter electrode, the discharge electrode includes an electrode base and a discharge portion, and the discharge portion is provided at a side of the electrode base facing the counter electrode; or alternatively
The opposite first side and the second side of the discharge electrode are respectively provided with the counter electrode, the discharge electrode comprises an electrode matrix and a discharge part, and the discharge part is arranged on the first side and the second side of the electrode matrix.
In some exemplary embodiments, the electrode base and the counter electrode are each rod-shaped or bar-shaped, and the electrode base and the counter electrode are parallel in length;
the discharge part is in a zigzag shape and comprises a plurality of sawteeth which are sequentially arranged along the length direction of the electrode matrix, and the curvature radius of the outer surface of the counter electrode is larger than that of the tip of the sawteeth; or the discharge part comprises a plurality of discharge wires which are sequentially arranged along the length direction of the electrode matrix, and the curvature radius of the outer surface of the counter electrode is larger than that of the outer surface of the discharge wire.
In some exemplary embodiments, the discharge electrode includes a wire electrode, the counter electrode is rod-shaped or bar-shaped, the wire electrode and the counter electrode are parallel in a length direction, and a radius of curvature of an outer surface of the counter electrode is greater than a radius of curvature of an outer surface of the wire electrode.
In some exemplary embodiments, the first material of the first insulated cellular load is disposed the same as or different from the second material of the second insulated cellular load.
In some exemplary embodiments, the first material of the first insulated cellular load or the second material of the second insulated cellular load comprises any one or more of:
Hydrotalcite;
A transition metal and/or noble metal modified molecular sieve;
Transition metal and/or noble metal modified alumina.
In some exemplary embodiments, the transition metal comprises any one or more of manganese, cerium, iron, copper, nickel, lanthanum, and the noble metal comprises any one or more of silver, platinum, palladium, ruthenium, rhodium, gold.
In some exemplary embodiments, the first material of the first insulated honeycomb load and the second material of the second insulated honeycomb load are both manganese aluminum layered composite hydroxides: mnAl-LDH; or alternatively
The first material loaded by the first insulating honeycomb is manganese nickel aluminum layered double hydroxide: mnNiAl-LDH, the second material of the second insulated honeycomb support being manganese/iron modified alumina: mn/Fe modified Al2O3; or alternatively
The first material loaded by the first insulating honeycomb is manganese aluminum layered composite hydroxide: mnAl-LDH, the second material of the second insulated honeycomb load is manganese dioxide: mnO2; or alternatively
The first material loaded by the first insulating honeycomb is manganese aluminum layered composite hydroxide: mnAl-LDH, the second material of the second insulated honeycomb load being a silver/manganese modified molecular sieve: ag/Mn modified USY.
In some exemplary embodiments, the first insulating honeycomb or the second insulating honeycomb is a ceramic honeycomb, a fiberglass honeycomb, an alumina honeycomb, a fiberglass honeycomb, or a polymer honeycomb that meets a preset fire rating requirement.
In some exemplary embodiments, the counter electrode is set to ground and the voltage of the discharge electrode is 4.5kV to 12kV, or-4.5 kV to-12 kV.
In some exemplary embodiments, the discharge electrode and the counter electrode are made of metal, and the surface is provided with a finishing material.
In some exemplary embodiments, the metal employed for the discharge electrode and the counter electrode comprises any one or more of stainless steel, copper, titanium, tungsten, nickel;
the modification material comprises any one or more of noble metal, carbon nano tube and graphene.
In some exemplary embodiments, the air cleaning module further comprises a housing provided with an air inlet and an air outlet, the insulating honeycomb structure and the non-thermal plasma generator being disposed within the housing.
The embodiment of the utility model provides an air purifying device, which comprises: the machine body and the air purification module described in any of the above exemplary embodiments, the machine body having an air duct in which the air purification module is installed.
In some exemplary embodiments, the air cleaning device further comprises an air supply module disposed within the air duct, the air supply module being configured to produce an air flow through the air cleaning module at a wind speed of 0.5m/s to 3m/s when in operation.
According to the air purification module provided by the embodiment of the utility model, the non-thermal plasma generator is used as an energy source to generate active particles, and the active particles can be used for degrading peculiar smell and purifying air in cooperation with the catalyst in the first insulating honeycomb and the catalyst or the adsorbent in the second insulating honeycomb, so that the condition that the traditional adsorption technology is invalid after saturation is avoided, and the air purification module does not need to perform module component replacement operation; the air purification module can be independently used for air purification, so that parts, such as an ultraviolet light source, which are harmful to machine parts or human body health are not required to be arranged, and the catalyst in the air purification module can eliminate byproducts, such as ozone, generated by a non-thermal plasma generator, so that the mineralization rate of pollutants is improved, and secondary pollution is avoided; the first insulated honeycomb supported catalyst and the second insulated honeycomb supported catalyst or adsorbent can form different combination schemes, and can remove different types of pollutants so as to improve the purifying effect of the air purifying module.
Drawings
FIG. 1 is a schematic diagram showing an exploded structure of an air purification module according to an embodiment of the present application;
FIG. 2 is an exploded view of an air purification module according to another embodiment of the present application;
FIG. 3 is an exploded view of an air cleaning module according to another embodiment of the present application;
FIG. 4 is an exploded view of an air cleaning module according to another embodiment of the present application;
fig. 5 is an exploded view of an air cleaning module according to another embodiment of the present application.
Reference numerals:
The electrode comprises a 1-discharge electrode, a 11-electrode substrate, a 12-discharge part, 121-saw teeth, 122-discharge wires, 13-electrode wires, 2-counter electrodes, 3-first insulating honeycomb, 31-first side, 32-second side, 33-air inlet end face of the first insulating honeycomb, 34-air outlet end face of the first insulating honeycomb, 4-second insulating honeycomb, 41-third side, 42-air inlet end face of the second insulating honeycomb and 43-air outlet end face of the second insulating honeycomb.
Detailed Description
The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.
Referring to fig. 1 to 5, an embodiment of the present application provides an air cleaning module including an insulating honeycomb structure and a non-thermal plasma generator.
Wherein the insulating honeycomb structure comprises a first insulating honeycomb 3 and a second insulating honeycomb 4 which are oppositely arranged, the second insulating honeycomb 4 is positioned on the air outlet side of the first insulating honeycomb 3, the insulating honeycomb structure is provided with a first side 31 positioned on the air inlet side of the first insulating honeycomb 3, a second side 32 positioned between the first insulating honeycomb 3 and the second insulating honeycomb 4, and a third side 41 positioned on the air outlet side of the second insulating honeycomb 4. Specifically, the wind direction flowing through the air cleaning module flows from the air inlet side of the first insulating honeycomb 3 (i.e., the first side 31 of the insulating honeycomb structure), through the first insulating honeycomb 3 and the second insulating honeycomb 4, and toward the air outlet side of the second insulating honeycomb 4 (i.e., the third side 41 of the insulating honeycomb structure).
The non-thermal plasma generator includes a discharge electrode 1 and a counter electrode 2, the discharge electrode 1 being disposed on one of the first side 31 and the second side 32 of the insulating honeycomb structure, and the counter electrode 2 being disposed on one of the second side 32 and the third side 41 of the insulating honeycomb structure. In the embodiment shown in fig. 3 and 4, the discharge electrode 1 is arranged on a first side 31 of the insulating honeycomb structure, and in the embodiment shown in fig. 1, 2 and 5, the discharge electrode 1 is arranged on a second side 32 of the insulating honeycomb structure; the counter electrode 2 is arranged on the second side 32 of the insulating honeycomb structure in the embodiment shown in fig. 1, 3 and 5, and the counter electrode 2 is arranged on the third side 41 of the insulating honeycomb structure in the embodiment shown in fig. 2 and 4.
The first insulating honeycomb 3 is loaded with a first material which is provided as a catalyst capable of cooperating with active particles generated by ionization of a non-thermal plasma generator for air purification, and the second insulating honeycomb 4 is loaded with a second material which is provided as a catalyst or adsorbent capable of cooperating with active particles generated by ionization of a non-thermal plasma generator for air purification. Wherein the catalyst in the first material or the second material may have only a catalytic action, or the catalyst may have both a catalytic action and an adsorption action, i.e. the catalyst may be an adsorption catalyst having both a catalytic and an adsorption action.
Specifically, the working principle of the non-thermal plasma generator is that an asymmetric plasma electric field is formed by high-voltage and high-frequency pulse discharge, so that a large amount of plasmas in the air are impacted step by step to generate electrochemical reaction, and toxic and harmful gases, living viruses, bacteria and the like are rapidly degraded. When the gas flow passes through the area where the high-energy active particles generated by the non-thermal plasma generator are located, volatile Organic Compounds (VOCs) and odor in the gas flow can be degraded and removed by the high-energy active particles and the secondary active particles. The air purification module provided by the application avoids the condition of secondary pollution caused by failure after saturation in the traditional non-regenerative adsorption technology, and does not need to replace internal components of the air purification module for multiple times. In addition, the air purification module can be used independently, so that an ultraviolet lamp which can damage machine parts and human bodies is not required to be specially arranged as in the traditional photocatalysis technology. When the non-thermal plasma generator and the insulating honeycomb structure loaded with the catalyst cooperate, the non-thermal plasma generator and the insulating honeycomb structure can react in a light-proof environment and a conventional illumination environment to achieve the effect of purifying air. Of course, the air purification module of the application can also be provided with an ultraviolet light source to strengthen the purification and disinfection effects on the air. The air purification module can be used together with components such as ultraviolet lamps and the like capable of performing photocatalytic oxidation to perform synergistic catalytic purification, so that the catalyst loaded by the insulating honeycomb structure can eliminate byproducts such as ozone generated by a non-thermal plasma generator, can improve the mineralization rate of pollutants and avoid secondary pollution.
The nonthermal plasma generator can effectively decompose pollutants such as Volatile Organic Compounds (VOCs), and the catalyst (the catalyst loaded on the first insulating honeycomb 3 and/or the second insulating honeycomb 4) loaded on the insulating honeycomb structure can act in a synergistic way with high-energy active particles generated by the nonthermal plasma generator to play a role in catalysis, so that the purification effect of the air purification module is effectively exerted, and the catalyst loaded on the insulating honeycomb structure can also remove byproducts such as ozone, carbon monoxide and the like generated by the nonthermal plasma generator, so that the mineralization rate of the pollutants is improved, and secondary pollution is avoided; when the second insulating honeycomb 4 is loaded with the adsorbent, the adsorbent can adsorb pollutants or intermediate byproducts in the airflow, so that the effect of completely removing the pollutants or intermediate byproducts is achieved, the adsorbent can also play a role of enriching the pollutants or intermediate byproducts, and the enriched pollutants or intermediate byproducts are more easily oxidized, so that the non-thermal plasma generator can be started for regeneration of the adsorbent after a period of time. In addition, in the air purification module provided by the embodiment of the application, the insulating honeycomb structure is formed by two layers of the first insulating honeycomb 3 and the second insulating honeycomb 4, the first insulating honeycomb 3 is loaded with the first material comprising the catalyst, and the second insulating honeycomb 4 is loaded with the second material comprising the catalyst or the adsorbent, so that the first material and the second material can be the same material or different materials, the first insulating honeycomb 3 and the second insulating honeycomb 4 can be subjected to functional complementation and combination, and cooperate with a non-thermal plasma generator to remove different types of pollutants, thereby expanding the application range of the air purification module provided by the embodiment of the application.
Wherein the first material of the first insulating honeycomb 3 is set as a catalyst which can cooperate with active particles generated by ionization of a non-thermal plasma generator to perform air purification, the second material of the second insulating honeycomb 4 is set as a catalyst or adsorbent which can cooperate with active particles generated by ionization of a non-thermal plasma generator to perform air purification, and the air flow is set to flow from the first insulating honeycomb 3 to the second insulating honeycomb 4, so that pollutants in the air flow are degraded by the catalyst loaded on the first insulating honeycomb 3, and then the same type or another type of pollutants are degraded by the catalyst or adsorbent loaded on the second insulating honeycomb 4 or the adsorption and decomposition of intermediate byproducts are performed. Therefore, the air purification module provided by the embodiment of the application can degrade and eliminate pollutants of different types and different degradation difficulty levels, and the functions and application range of the air purification module provided by the embodiment of the application are expanded.
In some exemplary embodiments, as shown in fig. 3 and 4, the discharge electrode 1 is disposed on the first side 31 of the insulating honeycomb structure, and the gap L1 between the discharge electrode 1 and the air inlet end face 33 of the air inlet side of the first insulating honeycomb 3 is 0-0.5mm.
In other exemplary embodiments, as shown in fig. 1-2 and 5, the discharge electrode 1 is disposed on the second side 32 of the insulated honeycomb structure, and the gap L2 between the discharge electrode 1 and the air outlet end face 34 on the air outlet side of the first insulated honeycomb 3 is 0-0.5mm, and the gap L3 between the discharge electrode 1 and the air inlet end face 42 on the air inlet side of the second insulated honeycomb 4 is 0-0.5mm.
The distance between the discharge electrode 1 and the insulating honeycomb structure affects the discharge behavior. Specifically, under the conditions that the same high-voltage power supply has a constant input power and the distance between the discharge electrode 1 and the counter electrode 2 is unchanged, the output power (the discharge power of the non-thermal plasma generator) of the air purification module is firstly reduced and then increased along with the increase of the distance (such as L1, L2 and L3) between the discharge electrode 1 and the insulating honeycomb structure. Therefore, according to model design and experimental data analysis, the gaps (such as L1, L2 and L3) between the discharge electrode 1 and the insulating honeycomb structure are set to be 0-0.5mm, so that the air purification module can obtain larger output power by reducing the gaps between the discharge electrode 1 and the insulating honeycomb structure, and further the effects of purifying and degrading VOCs and removing peculiar smell of the air purification module are improved.
In some exemplary embodiments, as shown in fig. 3 and 4, the discharge electrode 1 is disposed on the first side 31 of the insulating honeycomb structure, and the discharge electrode 1 is closely attached to the air inlet end face 33 of the air inlet side of the first insulating honeycomb 3, that is, the gap L1 between the discharge electrode 1 and the air inlet end face 33 of the first insulating honeycomb 3 is 0.
In other exemplary embodiments, as shown in fig. 1-2 and 5, the discharge electrode 1 is disposed on the second side 32 of the insulating honeycomb structure, and the discharge electrode 1 is closely attached to the air outlet end face 34 on the air outlet side of the first insulating honeycomb 3 and the air inlet end face 42 on the air inlet side of the second insulating honeycomb 4, that is, the gap L2 between the discharge electrode 1 and the air outlet end face 34 of the first insulating honeycomb 3 is 0, and the gap L3 between the discharge electrode 1 and the air inlet end face 42 of the second insulating honeycomb 4 is 0.
Specifically, the discharge electrode 1 is arranged to be clung to the insulating honeycomb structure, so that the air purification module obtains maximum output power, the non-thermal plasma generator of the air purification module can generate more high-energy active particles, and the effects of degrading and purifying VOCs and removing peculiar smell are better.
In some exemplary embodiments, as shown in fig. 1, 3 and 5, the counter electrode 2 is disposed on the second side 32 of the insulated honeycomb structure, and the gap L4 between the counter electrode 2 and the air outlet end face 34 on the air outlet side of the first insulated honeycomb 3 is 0-0.5mm, and the gap L5 between the counter electrode 2 and the air inlet end face 42 on the air inlet side of the second insulated honeycomb 4 is 0-0.5mm.
In other exemplary embodiments, as shown in fig. 2 and 4, the counter electrode 2 is disposed on the third side 41 of the insulating honeycomb structure, and the gap L6 between the counter electrode 2 and the air-out end face 43 on the air-out side of the second insulating honeycomb 4 is 0-0.5mm.
The distance between the counter electrode 2 and the insulating honeycomb structure affects the discharge behavior. Specifically, under the conditions that the same high-voltage power supply has a constant input power and the distance between the discharge electrode 1 and the counter electrode 2 is unchanged, as the distance (such as L4, L5 and L6) between the counter electrode 2 and the insulating honeycomb structure is increased, the output power of the air purification module (the discharge power of the non-thermal plasma generator) is reduced and then increased. Therefore, according to model design and experimental data analysis, the gaps (such as L4, L5 and L6) between the counter electrode 2 and the insulating honeycomb structure are set to be 0-0.5mm, so that the air purification module can obtain larger output power by reducing the gaps between the counter electrode 2 and the insulating honeycomb structure, and further the effects of purifying and degrading VOCs and removing peculiar smell of the air purification module are improved.
In some exemplary embodiments, as shown in fig. 1, 3 and 5, the counter electrode 2 is disposed on the second side 32 of the insulating honeycomb structure, and the counter electrode 2 is closely attached to the air outlet end face 34 on the air outlet side of the first insulating honeycomb 3 and the air inlet end face 42 on the air inlet side of the second insulating honeycomb 4, that is, the gap L4 between the counter electrode 2 and the air outlet end face 34 of the first insulating honeycomb 3 is 0, and the gap L5 between the counter electrode 2 and the air inlet end face 42 of the second insulating honeycomb 4 is 0.
In other exemplary embodiments, as shown in fig. 2 and 4, the counter electrode 2 is disposed on the third side 41 of the insulating honeycomb structure, and the counter electrode 2 is closely attached to the air-out end face 43 on the air-out side of the second insulating honeycomb 4, that is, the gap L6 between the counter electrode 2 and the air-out end face 43 of the second insulating honeycomb 4 is 0.
Specifically, the counter electrode 2 is closely attached to the insulating honeycomb structure, so that the air purification module obtains maximum output power, the non-thermal plasma generator of the air purification module can generate more high-energy active particles, and the effects of degrading and purifying VOCs and removing peculiar smell are better.
In some exemplary embodiments, as shown in fig. 1 and 5, the discharge electrode 1 and the counter electrode 2 are each disposed on the second side 32 of the insulating honeycomb structure, and the discharge electrode 1 and the counter electrode 2 are alternately disposed at intervals, with a spacing S1 between the discharge electrode 1 and the counter electrode 2 of 7mm to 23mm.
Specifically, the distance between the discharge electrode 1 and the counter electrode 2 is too far, and the required excitation voltage for both the discharge electrode 1 and the counter electrode 2 is too high; the distance between the discharge electrode 1 and the counter electrode 2 is too short, and arc discharge is easy to occur between the discharge electrode 1 and the counter electrode 2, which causes a danger. Therefore, by theoretical model calculation and experimental data analysis, the space S1 between the discharge electrode 1 and the counter electrode 2 is preferably set to 7mm-23mm so that the nonthermal plasma generator can normally operate and easily excite to produce high-energy active particles.
In other exemplary embodiments, as shown in fig. 3, the discharge electrode 1 is disposed on a first side 31 of the insulating honeycomb structure, the counter electrode 2 is disposed on a second side 32 of the insulating honeycomb structure, and projections of the discharge electrode 1 and the counter electrode 2 on an air inlet end face 33 on an air inlet side or an air outlet end face 34 on an air outlet side of the first insulating honeycomb 3 are at least partially overlapped or offset.
Specifically, the discharge electrode 1 is disposed on the first side 31 of the insulating honeycomb structure, and the counter electrode 2 is disposed on the second side 32 of the insulating honeycomb structure, so that the high-energy active particles generated by the discharge of both the discharge electrode 1 and the counter electrode 2 can be sufficiently distributed in the area of the first insulating honeycomb 3, so that the high-energy active particles can be sufficiently contacted and cooperate with the catalyst supported on the first insulating honeycomb 3 to accelerate the air cleaning process; the high-energy active particles can flow to the second insulated honeycomb 4 along with the airflow, and the catalyst or adsorbent loaded on the second insulated honeycomb 4 can play a role in supplementing and further catalyzing and oxidizing. In addition, the high energy active particles can also flow with the air flow to the space outside the air purification module, such as: flows into the room to purify the air in the room.
In still other exemplary embodiments, as shown in fig. 2, the discharge electrode 1 is disposed on the second side 32 of the insulated honeycomb structure, the counter electrode 2 is disposed on the third side 41 of the insulated honeycomb structure, and projections of the discharge electrode 1 and the counter electrode 2 on the air inlet end face 42 of the air inlet side or the air outlet end face 43 of the air outlet side of the second insulated honeycomb 4 are at least partially coincident or offset.
Specifically, the discharge electrode 1 is disposed on the second side 32 of the insulating honeycomb structure, and the counter electrode 2 is disposed on the third side 41 of the insulating honeycomb structure, so that the high-energy active particles generated by the discharge of both the discharge electrode 1 and the counter electrode 2 can sufficiently cooperate with the catalyst or adsorbent supported on the second insulating honeycomb 4 to sufficiently exert the function of the catalyst or adsorbent supported on the second insulating honeycomb 4. In addition, the structural design can also enlarge the space distribution range of the high-energy active particles, so that the high-energy active particles can flow to the space outside the air purification module along with the air flow, such as: flows into the room to purify the air in the room.
The projections of the discharge electrode 1 and the counter electrode 2 on the insulating honeycomb structure are at least partially overlapped or staggered, and the position structure distribution mode of the counter electrode 2 and the discharge electrode 1 in the air purification module can be expanded, so that the structure types of the air purification module are more diversified. The air purification modules with various structural types can be spliced and combined together, so that the practical application of the air purification module is more flexible and adjustable.
In some exemplary embodiments, as shown in fig. 2, the discharge electrode 1 is disposed on the second side 32 of the insulating honeycomb structure, the counter electrode 2 is disposed on the third side 41 of the insulating honeycomb structure, projections of the discharge electrode 1 and the counter electrode 2 on the air inlet end face 42 or the air outlet end face 43 of the air inlet side or the air outlet side of the second insulating honeycomb 4 are disposed in a staggered manner, a space S2 between projections of the discharge electrode 1 and the counter electrode 2 on the air inlet end face 42 or the air outlet end face 43 of the air inlet side or the air outlet side of the second insulating honeycomb 4 is not greater than 5mm, and a space S3 between the discharge electrode 1 and the counter electrode 2 is 10mm to 25mm.
In other exemplary embodiments, as shown in fig. 3, the discharge electrode 1 is disposed on the first side 31 of the insulating honeycomb structure, the counter electrode 2 is disposed on the second side 32 of the insulating honeycomb structure, projections of the discharge electrode 1 and the counter electrode 2 on the air inlet end face 33 or the air outlet end face 34 of the air inlet side or the air outlet side of the first insulating honeycomb 3 are disposed in a staggered manner, a distance between projections of the discharge electrode 1 and the counter electrode 2 on the air inlet end face 33 or the air outlet end face 34 of the air inlet side or the air outlet side of the first insulating honeycomb 3 is not greater than 5mm, and a distance between the discharge electrode 1 and the counter electrode 2 is 10mm-25mm.
Specifically, in the case where both the discharge electrode 1 and the counter electrode 2 are located on different sides of the insulating honeycomb structure, and the projections of the discharge electrode 1 and the counter electrode 2 on one end face of the insulating honeycomb structure (the air inlet end face 33 or the air outlet end face 34 of the first insulating honeycomb 3, or the air inlet end face 42 or the air outlet end face 43 of the second insulating honeycomb 4) are arranged in a staggered manner, the space between the projections of the discharge electrode 1 and the counter electrode 2 on one end face of the insulating honeycomb structure is too far (i.e., the projection space S2 is too large), resulting in that the space S3 between the discharge electrode 1 and the counter electrode 2 is too large, which in turn results in that the required excitation voltage of both the discharge electrode 1 and the counter electrode 2 is too high; the distance between the projections of the discharge electrode 1 and the counter electrode 2 on one end face of the insulating honeycomb structure is too close (i.e., the projection distance S2 is too small), resulting in too small a distance S3 between the discharge electrode 1 and the counter electrode 2, and further resulting in easy arcing between the discharge electrode 1 and the counter electrode 2, creating a hazard. Therefore, by theoretical model calculation and experimental data analysis, the projection spacing S2 between projections of both the discharge electrode 1 and the counter electrode 2 on one end face of the insulating honeycomb structure is set to be not more than 5mm, and the spacing S3 between the discharge electrode 1 and the counter electrode 2 is set to be 10mm to 25mm, so that the nonthermal plasma generator can be operated normally and easily excited to generate high-energy active particles.
In some exemplary embodiments, one side of the discharge electrode 1 is provided with the counter electrode 2, the discharge electrode 1 includes an electrode base 11 and a discharge portion 12, and the discharge portion 12 is provided on the side of the electrode base 11 facing the counter electrode 2.
Specifically, the discharge electrode 1 is provided to include an electrode base 11 and a discharge portion 12, and the discharge portion 12 is provided toward the counter electrode 2 so that a discharge phenomenon can be generated between the discharge portion 12 of the discharge electrode 1 and the counter electrode 2 after the non-thermal plasma generator is energized, so that the generated high-energy active particles are used for air purification. The discharge part 12 is arranged on the side of the electrode substrate 11 facing the counter electrode 2, so that the discharge part 12 and the counter electrode 2 can discharge efficiently without blocking, thereby improving the discharge efficiency and releasing more high-energy active particles.
In some exemplary embodiments, as shown in fig. 1-4, the opposite first and second sides of the discharge electrode 1 are each provided with a counter electrode 2, the discharge electrode 1 includes an electrode base 11 and a discharge portion 12, and the discharge portion 12 is disposed on the first and second sides of the electrode base 11.
Specifically, as shown in fig. 1-4, the opposite sides of the discharge electrode 1 are provided with the counter electrode 2, the opposite sides of the electrode substrate 11 are provided with the discharge parts 12, and especially, as shown in fig. 1-4, the discharge parts 12 on the two sides face the counter electrode 2 on the two sides respectively, so that the space utilization rate of the air purifying device can be improved, more high-energy active particles can be obtained in the same space by the air purifying device, the high-energy active particles are distributed more uniformly in the space, the synergistic effect with the catalyst on the insulating honeycomb structure is better, and the effects of decomposing pollutants such as volatile organic compounds in the air and removing peculiar smell are better.
In the above exemplary embodiment, the electrode substrate 11 is provided with the discharge portion 12 facing one side of the counter electrode 2, or the opposite sides of the electrode substrate 11 are provided with the discharge portion 12, which enriches the structure types of the air purification module of the present application, and can expand the structure and position distribution modes of the counter electrode 2 and the discharge electrode 1 in the air purification module, so that the structure types of the air purification module of the present application are more diversified. The air purification modules with various structural types can be spliced and combined together, so that the practical application of the air purification module is more flexible and adjustable.
In some exemplary embodiments, as shown in fig. 1 to 4, the electrode base 11 and the counter electrode 2 are each in a rod shape or a bar shape, and the electrode base 11 and the counter electrode 2 are parallel in the length direction. The cross-sections of the electrode base 11 and the counter electrode 2 may be circular, rectangular, or the like.
As shown in fig. 1 to 2, the discharge portion 12 has a saw-tooth shape and includes a plurality of saw teeth 121 arranged in order along the longitudinal direction of the electrode base 11, and the radius of curvature of the outer surface of the counter electrode 2 is larger than the radius of curvature of the tips of the saw teeth 121. The electrode base 11 may be provided with the serrated discharge portions 12 on both sides thereof, or may be provided with the serrated discharge portions 12 on only one side of the electrode base 11.
Or as shown in fig. 3 to 4, the discharge portion 12 includes a plurality of discharge wires 122 arranged in sequence along the longitudinal direction of the electrode base 11, and the radius of curvature of the outer surface of the counter electrode 2 is larger than that of the outer surface of the discharge wire 122. Wherein the cross-section of the discharge wire 122 may be circular or other shape.
As shown in fig. 1 to 4, in the discharge electrode 1, a plurality of zigzag or wire-shaped discharge portions 12 are distributed along the length direction of the electrode substrate 11, which can increase the ionization efficiency of air, increase the concentration of generated high-energy active particles, and make the spatial distribution of the generated high-energy active particles more uniform, so as to better purify the air and remove the odor.
The electrode substrate 11 and the length direction of the counter electrode 2 are arranged in parallel, the plurality of saw teeth 121 or the plurality of discharge wires 122 arranged on the electrode substrate 11 can be arranged along the extending direction of the electrode substrate 11, and the plurality of saw teeth 121 or the plurality of discharge wires 122 face the counter electrode 2 so as to improve the discharge efficiency between the discharge electrode 1 and the counter electrode 2, further increase the ionization efficiency of air and the concentration of generated high-energy active particles, and ensure that the generated high-energy active particles are more uniformly distributed in space so as to better purify the air and remove peculiar smell. The counter electrode 2 is provided in a rod-like or bar-like shape, and the discharge portion 12 of the discharge electrode 1 is provided in a zigzag-like or filament-like shape so that the radius of curvature of the tip of the zigzag 121 or the outer surface of the discharge wire 122 is smaller than the radius of curvature of the outer surface of the counter electrode 2, and the larger the difference between the radius of curvature of the tip of the zigzag 121 or the outer surface of the discharge wire 122 and the radius of curvature of the outer surface of the counter electrode 2 is, the lower the high voltage required for exciting the discharge is, and the more intense the discharge at the same voltage is.
It will be appreciated that the discharge portion 12 is not limited to the serrations 121 and the discharge wire 122, but may be provided in other structures having an outer surface with a small radius of curvature.
In some exemplary embodiments, as shown in fig. 5, the discharge electrode 1 includes a wire electrode 13, the counter electrode 2 is in a rod shape or a bar shape, the wire electrode 13 and the length direction of the counter electrode 2 are parallel, and the radius of curvature of the outer surface of the counter electrode 2 is larger than that of the outer surface of the wire electrode 13. The cross section of the counter electrode 2 may be circular or rectangular, and the cross section of the wire electrode 13 may be circular or other shapes.
Specifically, the discharge electrode 1 is arranged as the electrode wire 13, the outer surface of the electrode wire 13 has a smaller curvature radius, the counter electrode 2 is arranged as a rod shape or a strip shape, and the outer surface of the counter electrode 2 has a larger curvature radius, so that the curvature radius of the outer surface of the counter electrode 2 is far larger than that of the outer surface of the discharge electrode 1, the curvature radius of the outer surface of the electrode wire 13 of the discharge electrode 1 is smaller, the high voltage required for exciting the discharge of the discharge electrode 1 is lower, and more high-energy active particles are easier to generate. Thus, the arrangement facilitates the non-thermal plasma generator to be excited to discharge, producing more energetic active particles. And, the space occupation of the electrode wire 13 is smaller, the flow resistance is small, and the ventilation of air is facilitated.
In some exemplary embodiments, the first material carried by the first insulated honeycomb 3 is provided the same as or different from the second material carried by the second insulated honeycomb 4.
Specifically, the first material supported by the first insulating honeycomb 3 and the second material supported by the second insulating honeycomb 4 are both set to be the same or different so that the catalyst supported by both the first insulating honeycomb 3 and the second structural honeycomb 4 or the catalyst and the adsorbent supported by both can be functionally complementary and combined, so that the air cleaning module of the embodiment of the present application can be applied to cleaning decomposition of different types of pollutants.
In some exemplary embodiments, the first material supported by the first insulated honeycomb 3 or the second material supported by the second insulated honeycomb 4 includes any one or more of the following: hydrotalcite; a transition metal and/or noble metal modified molecular sieve; transition metal and/or noble metal modified alumina. Wherein the transition metal comprises any one or more of manganese, cerium, iron, copper, nickel and lanthanum, and the noble metal comprises any one or more of silver, platinum, palladium, ruthenium, rhodium and gold. The corresponding filter metal and/or noble metal can be selected and arranged according to the working parameters and other requirements of the air purification module.
Specifically, hydrotalcite may be used as an alkaline catalyst, a redox catalyst, and a catalyst support, and hydrotalcite also has ion exchange and adsorption effects, and thus hydrotalcite may be selected as the first material and/or the second material supported on the insulating honeycomb structure. The transition metal and/or noble metal can be subjected to catalytic and cross-coupling reaction with the organic compound, so that the first material and/or the second material of the insulating honeycomb structure are/is arranged to be the molecular sieve modified by the transition metal and/or noble metal and the alumina modified by the transition metal and/or noble metal, and the effects of degrading and decomposing VOCs and removing peculiar smell of the air purification module can be improved. The first material on the first insulating honeycomb 3 and the second material on the second insulating honeycomb 4 are arranged in one or more of the above-mentioned catalysts or adsorption catalysts, and the types of the contaminants catalytically decomposed by the different catalysts or adsorption catalysts are different, so that the catalytic adsorption function of the insulating honeycomb structure of the present application can be complemented and combined.
Suitable materials may be selected as the first material on the first insulating honeycomb 3 and the second material on the second insulating honeycomb 4 depending on the specific type of contaminants to be purified by the air cleaning module, the operating parameters of the air cleaning module, the type of byproducts generated by the non-thermal plasma generator, the cost of the air cleaning module itself, etc.
Notably, the dielectric constant and conductivity of the first insulating honeycomb 3 loaded with the first material and the second insulating honeycomb 4 loaded with the second material are changed, requiring a corresponding adjustment of the power supply parameters for powering the non-thermal plasma generator to adapt.
In some exemplary embodiments, the first material supported by the first insulated honeycomb 3 and the second material supported by the second insulated honeycomb 4 are both MnAl-LDH (manganese aluminum layered composite hydroxide).
In some exemplary embodiments, the first material supported by the first insulated honeycomb 3 is MnNiAl-LDH (manganese nickel aluminum layered double hydroxide) and the second material supported by the second insulated honeycomb 4 is Mn/Fe modified Al 2O3 (manganese/iron modified alumina).
In some exemplary embodiments, the first material supported by the first insulated honeycomb 3 is MnAl-LDH and the second material supported by the second insulated honeycomb 4 is MnO 2 (manganese dioxide).
In some exemplary embodiments, the first material supported by the first insulated honeycomb 3 is MnAl-LDH and the second material supported by the second insulated honeycomb 4 is Ag/Mn modified USY (silver/manganese modified molecular sieve).
Specifically, the combination scheme of the first material loaded on the first insulated honeycomb 3 and the second material loaded on the second insulated honeycomb 4 for different target pollutants for purification is shown in table 1 below.
TABLE 1
In table 1 above, the first material supported on the first insulating honeycomb 3 and the second material supported on the second insulating honeycomb 4 may be set as the same kind of catalyst for enhancing the catalytic effect for the small molecule gaseous contaminant liable to be degraded, such as the mineralized contaminant molecule of formaldehyde, ammonia, methyl mercaptan, etc., and at this time, the first insulating honeycomb 3 supported with the first material and the second insulating honeycomb 4 supported with the second material are the first catalytic layer and the second catalytic layer, respectively. When the air purification module works for purifying air, firstly, air flow with pollutants passes through the first insulation honeycomb 3, and the pollutants are degraded by a catalyst (namely a first material) loaded on the first insulation honeycomb 3; the gas stream then passes through the second insulated honeycomb 4 and the catalyst (i.e., the second material) supported on the second insulated honeycomb 4 degrades the contaminants. I.e. a combination of a first catalytic layer and a second catalytic layer may be employed for small molecule gaseous contaminants that are prone to degradation. For example, both the first material supported by the first insulating honeycomb 3 and the second material supported by the second insulating honeycomb 4 may be set as MnAl-LDH.
For small molecular gaseous pollutants which are easy to degrade, such as mineralized pollutant molecules of formaldehyde, ammonia, methyl mercaptan and the like, different types of catalysts can be loaded on the first insulating honeycomb 3 and the second insulating honeycomb 4. Different catalysts are loaded on the first insulating honeycomb 3 and the second insulating honeycomb 4 to realize functional complementation due to the specific removal effect of different types of catalysts on different pollutants. When the air purification module works for purifying air, firstly, air flow with pollutants passes through the first insulation honeycomb 3, and the first material on the first insulation honeycomb 3 is degraded by certain pollutants; the gas stream then passes through the second insulated honeycomb 4 and the second material on the second insulated honeycomb 4 undergoes another type of contaminant degradation. I.e. a combination of a first catalytic layer and a second catalytic layer may also be employed for small molecule gaseous contaminants that are prone to degradation. For example, the first material supported by the first insulated honeycomb 3 may be MnNiAl-LDH and the second material supported by the second insulated honeycomb 4 may be Mn/Fe modified Al 2O3.
Aiming at gaseous pollutants with medium degradation difficulty, such as small molecular acid, alcohol, aldehyde and other pollutants, the energy required by the degradation of the air purification module is higher than that of formaldehyde and other pollutants, and the power of the air purification module needs to be improved. Byproducts such as ozone, etc., generated during the operation of the air cleaning module are increased, and if they are not fully reacted while mineralizing pollutants, they are accumulated in the indoor air to damage the health of people. Therefore, aiming at gaseous pollutants with medium degradation difficulty, the first insulating honeycomb 3 of the air purification module is set to be a catalytic layer loaded with a catalyst, and the second insulating honeycomb 4 of the air purification module is set to be an exhaust treatment layer loaded with a catalyst, so that the catalyst loaded on the second insulating honeycomb 4 can react with byproducts such as ozone and the like, and the effect of safe emission is achieved. That is, a combination scheme of a catalytic layer and an exhaust gas treatment layer can be adopted for degrading gaseous pollutants with medium difficulty. For example, when n-butanol in the air is removed by the air cleaning module, the first material loaded on the first insulated honeycomb 3 may be set to MnAl-LDH, and the second material loaded on the second insulated honeycomb 4 may be set to MnO 2.
For gaseous pollutants which are difficult to remove, such as benzene series, the pollutants can not be fully mineralized basically when passing through the first insulated honeycomb 3 loaded with the catalyst (first material), the obtained intermediate product needs to be adsorbed by the second insulated honeycomb 4 loaded with the adsorbent (second material) to achieve the effect of fully removing, at this time, the first insulated honeycomb 3 loaded with the first material is a catalytic layer, and the second insulated honeycomb 4 loaded with the second material is an adsorption layer. The adsorbent loaded by the second insulating honeycomb 4 also has the function of enriching pollutants, and the enriched pollutants are more easily oxidized, so that the non-thermal plasma generator can be started for regeneration of the adsorbent after a period of time, namely, after the pollutants are enriched, the non-thermal plasma generator can be electrified, so that the enriched pollutants are oxidized, and the regeneration of the adsorbent is realized. Thus, for gaseous contaminants that are more difficult to remove, a combination of catalytic and adsorbent layers may be employed. For example, when toluene in the air is removed by the air cleaning module, the first material supported by the first insulating honeycomb 3 may be MnAl-LDH, and the second material supported by the second insulating honeycomb 4 may be Ag/Mn modified USY.
In some exemplary embodiments, the first insulating honeycomb 3 or the second insulating honeycomb 4 may be a ceramic honeycomb structure, a glass fiber honeycomb structure, an alumina honeycomb structure, a glass fiber reinforced plastic honeycomb structure, or a polymer honeycomb structure satisfying a preset fire rating requirement.
Because the discharge electrode 1 and the counter electrode 2 need to be excited and discharged, when the polymer honeycomb structure is selected, the requirement of a preset fire-proof grade needs to be met, for example, the fire-proof grade of the polymer honeycomb structure can reach 5VA grade, and the material can be ABS (acrylonitrile-butadiene-styrene terpolymer) plastic or ABS/PVC (polyvinyl chloride) mixed material or other plastics. Since the honeycomb structures of different materials have different dielectric constants, when the honeycomb structures of different materials are selected for the first insulating honeycomb 3 and the second insulating honeycomb 4, the power supply parameters for supplying power to the non-thermal plasma generator need to be adjusted accordingly for adaptation.
In some exemplary embodiments, the materials of the discharge electrode 1 and the counter electrode 2 are metals, and the surfaces are provided with a finishing material.
Specifically, a finishing material is provided on the surfaces of the metal materials of the discharge electrode 1 and the counter electrode 2 so as to improve the electrical conductivity of the discharge electrode 1 and the counter electrode 2 and the discharge efficiency of the non-thermal plasma generator of the present application.
In some exemplary embodiments, the metal employed for the discharge electrode 1 and the counter electrode 2 includes any one or more of stainless steel, copper, titanium, tungsten, nickel; the modifying material comprises any one or more of noble metal, carbon nano tube and graphene. Wherein the noble metal comprises any one or more of silver, platinum, palladium, ruthenium, rhodium and gold.
Specifically, for the discharge electrode 1 and the counter electrode 2, corresponding metals and finishing materials may be selected according to the specific type of the pollutant to be purified by the air purification module, the operating parameters of the air purification module, the manufacturing cost of the air purification module itself, and the like.
In some exemplary embodiments, the pressure difference between the discharge electrode 1 and the counter electrode 2 is 4.5kV to 12kV, or-4.5 kV to-12 kV. Wherein the counter electrode 2 is set to be grounded, and the voltage of the discharge electrode 1 is set to be 4.5kV to 12kV, or-4.5 kV to-12 kV.
Specifically, since specific material types of the discharge electrode 1, the counter electrode 2, the first insulating honeycomb 3 and the first material loaded thereon, the second insulating honeycomb 4 and the second material loaded thereon, etc. are different, and the interval between the discharge electrode 1 and the counter electrode 2, and the gap between the two and the insulating honeycomb structure are different, these affect the power supply parameter setting for supplying power to the non-thermal plasma generator. Also, the power supply voltage applied between the discharge electrode 1 and the counter electrode 2 is too low to excite discharge; the applied supply voltage is too high and is prone to risk. Thus, the counter electrode 2 is set to ground and the voltage supplied to the discharge electrode 1 is set to be between 4.5kV and 12kV or between-4.5 kV and-12 kV in order to accommodate different types of air cleaning modules.
In some exemplary embodiments, the air cleaning module further comprises a housing provided with an air inlet and an air outlet, the insulating honeycomb structure and the non-thermal plasma generator being disposed within the housing.
Specifically, an insulating honeycomb structure and a non-thermal plasma generator are arranged in a shell so as to form a cavity space filled with high-energy active particles in the shell, the cavity space is used for degrading and decomposing volatile organic compounds and removing peculiar smell in air flowing into the cavity space from an air inlet of the shell, and then clean air flows out from an air outlet of the shell; the high-energy active particles can also flow out from the air outlet of the shell along with air so as to purify the space outside the shell. And the shell also has the function of protecting and supporting the insulating honeycomb structure and the non-thermal plasma generator.
An embodiment of the present application provides an air cleaning device, including a machine body and the air cleaning module described in any one of the above exemplary embodiments, where the machine body has an air duct, and the air cleaning module is installed in the air duct.
Specifically, the air purifying device provided in the embodiment of the present application includes the air purifying module described in any of the foregoing exemplary embodiments, and therefore, the air purifying device has the structural features and advantages of the air purifying module described in any of the foregoing exemplary embodiments, which are not described herein.
The air purifying device provided by the embodiment of the application can be an electric appliance for degrading and decomposing volatile organic compounds and removing peculiar smell, such as an air conditioner, a sterilizer or an air purifier. The air purification module can be close to the air inlet end or the air outlet end of the air channel of the air purification device or is arranged in the middle of the air channel, so that the air passing direction of the air in the air channel when passing through the air purification module is as follows: from the first insulating honeycomb 3 to the second insulating honeycomb 4. The counter electrode 2 is grounded, high voltage is applied to the discharge electrode 1, and corona is generated around the discharge electrode 1. After the high-voltage discharge, plasma (high-energy active particles) and some secondary active particles are generated around the area between the discharge electrode 1 and the counter electrode 2, and under the synergistic effect of the catalyst supported by the first insulating honeycomb 3 and the second insulating honeycomb 4 or the supported catalyst and the adsorbent, the peculiar smell molecules flowing through the insulating honeycomb structure are catalytically decomposed into harmless carbon dioxide and water, so that the air purification effect of the air purification device is realized, and the air purification effect of the space (such as a room) where the air purification device is positioned is realized.
In some exemplary embodiments, the air cleaning apparatus further comprises an air supply module disposed within the air duct, the air supply module being configured to produce an air flow through the air cleaning module at an air speed of 0.5m/s to 3m/s when in operation.
Specifically, the higher the wind speed passing through the chamber space in the shell of the air purification module, the shorter the stay time of pollutants in the air, and the pollutants such as volatile organic compounds are less prone to be decomposed and purified; the smaller the wind speed is, the cooling/heating requirements of the air conditioner are not met, and the problems of less circulation times and prolonged purification time exist. Therefore, the wind speed is preferably selected to be 0.5m/s-3m/s, and the purification effect and the required purification duration can be simultaneously achieved.
The air purification device provided by the embodiment of the application is used for carrying out an air purification experiment, and the experimental result is as follows. The air purifying device of the embodiment of the application can be an air conditioner, an air purifying module is arranged at the air inlet end of an air channel of an indoor unit of the air conditioner, and the external dimension of the air purifying module is 170mm or 30mm; the discharge portion 12 of the discharge electrode 1 is formed in a zigzag shape and includes a plurality of serrations 121 distributed along the longitudinal direction of the electrode base 11, the length of the electrode base 11 is 170mm, the height (dimension perpendicular to the longitudinal direction of the electrode base 11) of the serrations 121 is 8mm, the thickness of the discharge electrode 1 is 0.3mm, and the material is titanium; the counter electrode 2 and the discharge electrode 1 have the same length and are stainless steel electrodes with the length of 170mm, the width of 10mm and the thickness of 2 mm; the discharge electrodes 1 and the counter electrodes 2 were alternately arranged and 4 were provided in total, wherein two counter electrodes 2 and discharge electrodes 1 were each provided, and the distance between the adjacent discharge electrodes 1 and counter electrodes 2 was 10mm. The first ceramic honeycomb 3 and the second ceramic honeycomb 4 of the insulating honeycomb structure are both ceramic honeycomb structures, and the first ceramic honeycomb 3 is coated with a catalyst material containing MnAl hydrotalcite (MnAl-LDH) with a loading of 20g; the second ceramic honeycomb 4 was coated with a molecular sieve USY material containing Ag/Mn modification (Ag/Mn modification USY) with a loading of 20g. An 8kV voltage was applied between the discharge electrode 1 and the counter electrode 2, the input power was 20W, and the air speed at which the air flow generated by the air blowing module of the air conditioner flowed through the air cleaning module was set to 1.5m/s. The test experiment is carried out in a national standard warehouse of 30m 3, the selected peculiar smell type is toluene, and after the actual measurement is carried out for 120min, the toluene removal rate is 86 percent (deducting natural attenuation). From this, it can be seen that the air purification device according to the embodiment of the present application has a good air purification effect.
Several key factors that affect the purification efficiency of an air purification module are: the shape of the electrodes (discharge electrode and counter electrode), the gaps between the electrodes and the insulating honeycomb structure (e.g., L1, L2, L3, L4, L5, L6), the distances between the discharge electrode and the counter electrode (e.g., S1, S2, S3), the materials of the first insulating honeycomb and the second insulating honeycomb, the kinds of the first materials and the second materials of the first insulating honeycomb and the second insulating honeycomb, the wind speed passing through the air cleaning module, the voltage applied to the discharge electrode, and the like. The embodiment of the application limits the factors in the aspects, so that the air purification module has good air purification effect.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," 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 utility model. In this specification, schematic representations of the above terms are not necessarily directed 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. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.
Claims (22)
1. An air purification module, comprising:
An insulating honeycomb structure comprising a first insulating honeycomb and a second insulating honeycomb disposed opposite each other, the second insulating honeycomb being positioned on an air-out side of the first insulating honeycomb, the insulating honeycomb structure having a first side positioned on an air-in side of the first insulating honeycomb, a second side positioned between the first insulating honeycomb and the second insulating honeycomb, and a third side positioned on an air-out side of the second insulating honeycomb; and
A non-thermal plasma generator comprising a discharge electrode disposed on one of a first side and a second side of the insulating honeycomb structure and a counter electrode disposed on one of the second side and a third side of the insulating honeycomb structure;
The first insulating honeycomb is loaded with a first material which is arranged as a catalyst capable of cooperating with active particles generated by ionization of the non-thermal plasma generator to perform air purification, and the second insulating honeycomb is loaded with a second material which is arranged as a catalyst or adsorbent capable of cooperating with active particles generated by ionization of the non-thermal plasma generator to perform air purification.
2. The air purification module of claim 1, wherein the discharge electrode is disposed on a first side of the insulating honeycomb structure, and a gap between the discharge electrode and an air inlet end face of an air inlet side of the first insulating honeycomb is 0-0.5mm; or (b)
The discharge electrode is arranged on the second side of the insulating honeycomb structure, the gap between the discharge electrode and the air outlet end face of the air outlet side of the first insulating honeycomb is 0-0.5mm, and the gap between the discharge electrode and the air inlet end face of the air inlet side of the second insulating honeycomb is 0-0.5mm.
3. The air purification module of claim 1, wherein the discharge electrode is disposed on a first side of the insulating honeycomb structure and the discharge electrode is in close proximity to an air inlet end face of an air inlet side of the first insulating honeycomb; or (b)
The discharge electrode is arranged on the second side of the insulating honeycomb structure, and is clung to the air outlet end face of the air outlet side of the first insulating honeycomb and the air inlet end face of the air inlet side of the second insulating honeycomb.
4. The air purification module according to claim 1, wherein the counter electrode is disposed on the second side of the insulating honeycomb structure, and a gap between the counter electrode and an air outlet end face of an air outlet side of the first insulating honeycomb is 0-0.5mm, and a gap between the counter electrode and an air inlet end face of an air inlet side of the second insulating honeycomb is 0-0.5mm; or (b)
The counter electrode is arranged on the third side of the insulating honeycomb structure, and a gap between the counter electrode and the air outlet end face of the air outlet side of the second insulating honeycomb is 0-0.5mm.
5. The air purification module of claim 1, wherein the counter electrode is disposed on the second side of the insulating honeycomb structure, and the counter electrode is in close proximity to an air outlet end face of the air outlet side of the first insulating honeycomb and an air inlet end face of the air inlet side of the second insulating honeycomb; or (b)
The counter electrode is arranged on the third side of the insulating honeycomb structure, and the counter electrode is clung to the air outlet end face of the air outlet side of the second insulating honeycomb.
6. The air purification module of claim 1, wherein the discharge electrode and the counter electrode are both disposed on the second side of the insulating honeycomb structure, and the discharge electrode and the counter electrode are alternately disposed at intervals, and a space between the discharge electrode and the counter electrode is 7mm to 23mm.
7. The air purification module according to claim 1, wherein the discharge electrode is disposed on a first side of the insulating honeycomb structure, the counter electrode is disposed on a second side of the insulating honeycomb structure, and projections of the discharge electrode and the counter electrode on an air inlet end face of an air inlet side or an air outlet end face of an air outlet side of the first insulating honeycomb are at least partially overlapped or staggered; or alternatively
The discharge electrode is arranged on the second side of the insulating honeycomb structure, the counter electrode is arranged on the third side of the insulating honeycomb structure, and projections of the discharge electrode and the counter electrode on the air inlet end face of the air inlet side or the air outlet end face of the air outlet side of the second insulating honeycomb are at least partially overlapped or staggered.
8. The air purification module according to claim 1, wherein the discharge electrode is disposed on a first side of the insulating honeycomb structure, the counter electrode is disposed on a second side of the insulating honeycomb structure, projections of the discharge electrode and the counter electrode on an air inlet end face of an air inlet side or an air outlet end face of an air outlet side of the first insulating honeycomb are arranged in a staggered manner, a distance between projections of the discharge electrode and the counter electrode on the air inlet end face of the air inlet side or the air outlet end face of the air outlet side of the first insulating honeycomb is not more than 5mm, and a distance between the discharge electrode and the counter electrode is 10mm-25mm; or alternatively
The discharge electrode set up in insulating honeycomb's second side, the counter electrode set up in insulating honeycomb's third side, the discharge electrode with the projection dislocation set on the air inlet terminal surface of second insulating honeycomb's air inlet side or the air-out terminal surface of air-out side, just the discharge electrode with the counter electrode is in the interval between the projection on the air inlet terminal surface of second insulating honeycomb's air inlet side or the air-out terminal surface of air-out side is not more than 5mm, the discharge electrode with interval between the counter electrode is 10mm-25mm.
9. The air purification module according to claim 1, wherein the counter electrode is provided on one side of the discharge electrode, the discharge electrode including an electrode base and a discharge portion provided on a side of the electrode base facing the counter electrode; or alternatively
The opposite first side and the second side of the discharge electrode are respectively provided with the counter electrode, the discharge electrode comprises an electrode matrix and a discharge part, and the discharge part is arranged on the first side and the second side of the electrode matrix.
10. The air purification module according to claim 9, wherein the electrode base and the counter electrode are each in a rod shape or a bar shape, and the electrode base and the counter electrode are parallel in a longitudinal direction;
the discharge part is in a zigzag shape and comprises a plurality of sawteeth which are sequentially arranged along the length direction of the electrode matrix, and the curvature radius of the outer surface of the counter electrode is larger than that of the tip of the sawteeth; or the discharge part comprises a plurality of discharge wires which are sequentially arranged along the length direction of the electrode matrix, and the curvature radius of the outer surface of the counter electrode is larger than that of the outer surface of the discharge wire.
11. The air cleaning module according to claim 1, wherein the discharge electrode comprises a wire electrode, the counter electrode is in a rod shape or a bar shape, the wire electrode and the counter electrode are parallel in a length direction, and a radius of curvature of an outer surface of the counter electrode is larger than a radius of curvature of an outer surface of the wire electrode.
12. The air purification module of any one of claims 1 to 11, wherein a first material of the first insulated cellular load is provided the same as or different from a second material of the second insulated cellular load.
13. The air purification module of any one of claims 1 to 11, wherein the first material of the first insulated honeycomb load or the second material of the second insulated honeycomb load comprises any one or more of:
Hydrotalcite;
A transition metal and/or noble metal modified molecular sieve;
Transition metal and/or noble metal modified alumina.
14. The air purification module of claim 13, wherein the transition metal comprises any one or more of manganese, cerium, iron, copper, nickel, lanthanum, and the noble metal comprises any one or more of silver, platinum, palladium, ruthenium, rhodium, gold.
15. The air purification module of any one of claims 1 to 11, wherein the first material of the first insulated honeycomb load and the second material of the second insulated honeycomb load are both manganese aluminum layered composite hydroxide: mnAl-LDH; or alternatively
The first material loaded by the first insulating honeycomb is manganese nickel aluminum layered double hydroxide: mnNiAl-LDH, the second material of the second insulated honeycomb support being manganese/iron modified alumina: mn/Fe modified Al 2O3; or alternatively
The first material loaded by the first insulating honeycomb is manganese aluminum layered composite hydroxide: mnAl-LDH, the second material of the second insulated honeycomb load is manganese dioxide: mnO 2; or alternatively
The first material loaded by the first insulating honeycomb is manganese aluminum layered composite hydroxide: mnAl-LDH, the second material of the second insulated honeycomb load being a silver/manganese modified molecular sieve: ag/Mn modified USY.
16. The air purification module of any one of claims 1 to 11, wherein the first or second insulating honeycomb is a ceramic honeycomb, a fiberglass honeycomb, an alumina honeycomb, a fiberglass honeycomb, or a polymer honeycomb that meets a preset fire rating.
17. An air cleaning module according to any one of claims 1 to 11, wherein the counter electrode is arranged to be grounded and the voltage of the discharge electrode is 4.5kV to 12kV, or-4.5 kV to-12 kV.
18. The air purification module according to any one of claims 1 to 11, wherein the discharge electrode and the counter electrode are made of metal, and a surface is provided with a finishing material.
19. The air purification module of claim 18, wherein the metal used for the discharge electrode and the counter electrode comprises any one or more of stainless steel, copper, titanium, tungsten, nickel;
the modification material comprises any one or more of noble metal, carbon nano tube and graphene.
20. The air purification module of any one of claims 1 to 11, further comprising a housing provided with an air inlet and an air outlet, the insulating honeycomb structure and the non-thermal plasma generator being disposed within the housing.
21. An air cleaning apparatus, comprising: a body and the air purification module of any one of claims 1 to 20, the body having an air duct within which the air purification module is mounted.
22. The air purification apparatus of claim 21, further comprising an air supply module disposed within the air duct, the air supply module configured to produce an air flow through the air purification module at an air speed of 0.5m/s to 3m/s when in operation.
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| CN202322678133.1U CN220818009U (en) | 2023-09-28 | 2023-09-28 | Air purification module and air purification device |
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| CN202322678133.1U CN220818009U (en) | 2023-09-28 | 2023-09-28 | Air purification module and air purification device |
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