An activated carbon filtration module and an air purification device

Abstract

The present invention relates to an activated carbon filtration module and an air purification device. The activated carbon filtration module includes: a substrate, on which a plurality of accommodation through-holes are formed, the hole walls of the accommodation through-holes are made of a conductive material, and the conductive material is suitable for grounding; activated carbon filler, which is filled in the accommodation through-holes of the substrate. The hole walls of the accommodation through-holes of the activated carbon filtration module of the present invention are composed of a conductive material, and the conductive material is grounded. Even if charges are accumulated on the substrate, the conductive material can conduct away the charges, thereby eliminating the regional electric field formed by the polypropylene framework, and it is not easy to ionize the water entering the accommodation through-holes. Therefore, it is not easy to generate active substances such as H+ and OH−, resulting in an accelerated synthesis rate of small molecule organic acids in the activated carbon region. Therefore, the activated carbon filtration module of the present invention can overcome the defects of short life cycle and low utilization rate of the activated carbon filtration module in the prior art, and it is not easy to generate active substances such as H+ and OH−.

Description

Technical Field

[0001] The present invention relates to the technical field of air purification equipment, and particularly relates to an activated carbon filter module and an air purification device. Background Art

[0002] The filter module based on activated carbon has important functions such as filtration and adsorption, VOCs catalytic degradation, and odor removal, and has good filtration effect. Compared with filters made of other materials, it also has the advantages of high efficiency and low maintenance cost, occupying a high share.

[0003] Taking the carbon cloth as an example, the existing carbon cloth mainly includes polypropylene non-woven fabric and activated carbon filler filled in polyethylene non-woven fabric. It has low cost and good adsorption effect, and is a commonly used filter module at present. However, since activated carbon is extremely prone to generating sour smell during use, the filter modules based on activated carbon such as carbon cloth in the prior art have short life cycles and low utilization rates. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects of short life cycle and low utilization rate of the activated carbon filter module in the prior art, so as to provide an activated carbon filter module that is not prone to generating sour smell, has a longer life cycle and a higher utilization rate.

[0005] To solve the above problems, the first aspect of the present invention provides an activated carbon filter module, including: a substrate, on which a plurality of accommodation through holes are formed, and the hole walls of the accommodation through holes are made of conductive materials, and the conductive materials are suitable for grounding; an activated carbon filler, which is filled in the accommodation through holes of the substrate.

[0006] Further, the substrate further includes:

[0007] A polypropylene substrate, on which a plurality of installation through holes are formed, and the conductive material includes a conductive layer laid on the hole walls of the installation through holes.

[0008] Further, the conductive material further includes an activated carbon anti-detachment net, and both sides of the substrate are covered with the activated carbon anti-detachment net. The activated carbon anti-detachment net is made of a conductor and abuts against the conductive layer and is suitable for grounding.

[0009] Further, a single layer of activated carbon filler is filled between two adjacent activated carbon anti-detachment nets.

[0010] The second aspect of the present invention relates to an air purification device, including the activated carbon filter module as described in the first aspect of the present invention.

[0011] Further, the air purification device further includes:

[0012] A housing, on which an air inlet and an air outlet are formed;

[0013] A dehydration module is provided inside the housing and is located between the activated carbon filtration module and the air inlet.

[0014] Furthermore, the dehydration module includes nano-titanium dioxide filler, and the air purification device further includes a light source provided inside the housing and adapted to irradiate the dehydration module.

[0015] Furthermore, the air purification device further includes a heating regeneration mechanism adapted to heat and regenerate the dehydration module and the activated carbon filtration module.

[0016] Furthermore, the air purification device further includes an electrostatic dust removal mechanism provided between the activated carbon filtration module and the air inlet.

[0017] Furthermore, the air purification device further includes a filter screen provided inside the housing and located between the activated carbon filtration module and the air inlet.

[0018] The present invention has the following advantages:

[0019] 1. As can be seen from the above technical solutions, on the substrate of the activated carbon filtration module provided in the first aspect of the present invention, accommodation through holes are formed. The hole walls of the accommodation through holes are made of a conductive material, and the conductive material is grounded. In the prior art, it is generally believed that the carbon cloth sandwich is prone to emitting a sour smell because the activated carbon adsorbs water and pollutants in the air, leading to the growth of bacteria and thus emitting a sour smell. After research by the applicant, it is found that the sour smell is mainly caused by small-molecule organic acids (such as HCOOH, CH3COOH, CH3CH2COOH, etc.). Since the activated carbon has a large specific surface area, this means that there is a large interface with high chemical activity on the interface, making it easy to carry out material exchange and charge transfer.

[0020] The framework material of the traditional carbon cloth sandwich is usually polypropylene. During use, different amounts of charge will be enriched at different positions on the surface of the polypropylene, which causes the activated carbon filling area inside the polypropylene to be in a state of high electric field action. The charge exchange rate on various interfaces in the activated carbon filling area is accelerated, and part of the water entering this area is ionized to generate active substances such as H+ and OH-, resulting in an accelerated synthesis rate of small-molecule organic acids in the activated carbon area.

[0021] The hole walls of the accommodation through holes of the activated carbon filtration module of the present invention are composed of a conductive material, and the conductive material is grounded. Therefore, even if charge is enriched on the substrate, the conductive material can conduct away the charge, thereby eliminating the regional electric field formed by the polypropylene framework and effectively weakening the electrochemical oxidation process accelerated by the electric field. It is not easy to ionize the water entering the accommodation through holes, so it is not easy to generate active substances such as H+ and OH-, resulting in an accelerated synthesis rate of small-molecule organic acids in the activated carbon area.

[0022] Therefore, the activated carbon filtration module of the present invention can overcome the defects of short life cycle and low utilization rate of the activated carbon filtration module in the prior art. It is not easy to generate active substances such as H+ and OH-, which leads to an accelerated synthesis rate of small molecular organic acids in the activated carbon region. In addition, the activated carbon filtration module of the present invention has a simple structure, is convenient to manufacture, is practical, safe and reliable, and is convenient to implement and promote.

[0023] 2. The air purification device related to the second aspect of the present invention includes or uses the activated carbon filtration module provided in the first aspect of the present invention, and thus has its beneficial effects, that is: it can overcome the defects of short life cycle and low utilization rate of the activated carbon filtration module in the prior art. It is not easy to generate active substances such as H+ and OH-, which leads to an accelerated synthesis rate of small molecular organic acids in the activated carbon region. In addition, the air purification device of the second aspect of the present invention has a simple structure, is convenient to manufacture, is practical, safe and reliable, and is convenient to implement and promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 Shows a schematic diagram of the accommodation through-hole of the activated carbon filtration module in the prior art;

[0026] Figure 2 Schematically shows the activated carbon filtration module of Embodiment 1 of the present invention;

[0027] Figure 3 For Figure 2 An enlarged view of the accommodation through-hole of the activated carbon filtration module in

[0028] Figure 4 An enlarged view of the installation through-hole and the conductive layer of the activated carbon filtration module of Embodiment 1 of the present invention;

[0029] Figure 5 For Figure 4 A cross-sectional view of the installation through-hole and the conductive layer of the activated carbon filtration module in

[0030] Figure 6 Schematic diagram of the air purification device of Embodiment 2 of the present invention;

[0031] Figure 7 Schematic diagram of the air purification device of Embodiment 2 of the present invention in the use state of the heating regeneration mechanism.

[0032] Description of the reference numerals in the drawings:

[0033] 100, air purification device; 1, activated carbon filtration module; 11, matrix; 111, polypropylene matrix; 112, conductive layer; 113, mounting through-hole; 114, accommodation through-hole; 12, activated carbon filler;

[0034] 2, housing; 3, dehydration module; 4, heating regeneration mechanism; 5, electrostatic dust removal mechanism; 6, filter screen; 7, fan. Detailed implementation manners

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0036] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0039] Figure 2 Schematically shows the activated carbon filtration module of Embodiment 1 of the present invention. Figure 3 For Figure 2 the enlarged view of the accommodation through-hole of the activated carbon filtration module in Figure 2 and Figure 3As shown in the figure, the activated carbon filtration module of this embodiment mainly includes a matrix 11 and activated carbon filler 12. Among them, a plurality of accommodation through-holes 114 are formed on the matrix 11. The pore walls of the accommodation through-holes 114 are made of conductive material, and the conductive material is suitable for grounding. The activated carbon filler 12 is filled in the accommodation through-holes 114 of the matrix 11.

[0040] In the prior art, it is generally believed that the carbon cloth sandwich is prone to emitting a sour smell because the activated carbon will adsorb pollutants in water and air, leading to the growth of bacteria and thus emitting a sour smell. The applicant found that the sour smell is mainly caused by small-molecule organic acids (such as HCOOH, CH3COOH, CH3CH2COOH, etc.). Since the activated carbon has a large specific surface area, this means that there is a large interface with high chemical activity on the interface, which is prone to material exchange and charge transfer.

[0041] The framework material of the traditional carbon cloth sandwich is usually polypropylene. During use, different amounts of charge will be enriched at different positions on the surface of polypropylene, which causes the activated carbon filling area inside the polypropylene to be under the action of a relatively high electric field. The charge exchange rate on various interfaces in the activated carbon filling area is accelerated, and part of the water entering this area is ionized to produce active substances such as H+ and OH-, resulting in an accelerated synthesis rate of small-molecule organic acids in the activated carbon area.

[0042] For example, as Figure 1 shown, when Vab > Vcd, it indicates that an electric field pointing from ab to cd is formed in the illustrated area, thus causing the charge exchange rate on various interfaces in the activated carbon area to accelerate. At the same time, it may also ionize the H2O entering this area to produce H + and OH - and other active substances, resulting in an accelerated synthesis rate of small-molecule organic acids in the activated carbon area.

[0043] The pore walls of the accommodation through-holes 114 of the activated carbon filtration module 1 of this embodiment are composed of conductive material and the conductive material is grounded. Therefore, even if charge is enriched on the matrix 11, the conductive material can conduct away the charge. As Figure 3 shown, after connecting the metal framework to the ground, Ve = Vf = Vg = Vh, eliminating the regional electric field formed by the original polypropylene framework and greatly weakening the electrochemically oxidative process accelerated by the electric field. Thus, the regional electric field formed by the polypropylene framework is eliminated, effectively weakening the electrochemically oxidative process accelerated by the electric field. It is not easy to ionize the water entering the accommodation through-holes 114, so it is not easy to produce H + and OH - and other active substances, resulting in an accelerated synthesis rate of small-molecule organic acids in the activated carbon area.

[0044] Therefore, the activated carbon filtration module 1 of this embodiment can overcome the defects of short life cycle and low utilization rate of the activated carbon filtration module in the prior art. It is not easy to generate active substances such as H+ and OH-, which leads to an accelerated synthesis rate of small molecule organic acids in the activated carbon area. In addition, the structure of the activated carbon filtration module 1 of this embodiment is simple, easy to manufacture, practical, safe and reliable, and convenient to implement and promote.

[0045] The substrate 11 can be made of a conductive metal or a conductive polymer material such as polytetrafluoroethylene. In this embodiment, the substrate 11 of the activated carbon filtration module includes a polypropylene substrate 111. A plurality of mounting through holes 113 are formed thereon, and the conductive material includes a conductive layer 112 laid on the inner wall of the mounting through hole. Preferably, in this embodiment, the conductive layer 112 is made of stainless steel and attached to the inner wall of the mounting through hole 113. In order to prevent the stainless steel from rebounding, resulting in the movement or even falling off of the activated carbon particles, the stainless steel conductive layer 112 is set to be thinner and laid on the inner wall of the mounting through hole of the polypropylene substrate 111, and the polypropylene substrate 111 can play a supporting role, thereby enhancing the strength of the substrate 11. In order to ensure that the conductive layer 112 can be reliably limited on the inner wall of the mounting through hole 113, the conductive layer 112 is preferably bonded to the inner wall of the mounting through hole 113.

[0046] In this embodiment, the activated carbon filtration module preferably further includes an activated carbon anti-detachment net, and both sides of the substrate 11 are covered with the activated carbon anti-detachment net. The activated carbon anti-detachment net can be made of a conductor, which abuts against the conductive layer 112 and is suitable for grounding. The activated carbon anti-detachment net can not only prevent the activated carbon particles from falling off from the accommodation through holes, but also ground all the conductive layers 112. Preferably, each activated carbon filtration module includes a substrate group composed of a plurality of substrates stacked, and one activated carbon anti-detachment net is covered on each side of the substrate group, and one activated carbon anti-detachment net is clamped between every two adjacent substrates 11.

[0047] The mounting through hole 113 is preferably but not limited to a cylindrical hole, a conical hole or a prismatic hole formed on the polypropylene substrate 111. Preferably, in this embodiment, the mounting through hole 113 is a square hole formed on the polypropylene substrate 111. The side length of the square hole is 0.8 - 1.2 cm. The number of square holes can be designed according to the shape and number of the polypropylene substrate 111. For example, in this embodiment, the polypropylene substrate 111 is plate-shaped, and the number of square holes is 25 x 25.

[0048] In this embodiment, between two adjacent activated carbon anti - detachment meshes, it is optional to be filled with single - layer or multi - layer activated carbon fillers 12. Preferably, in this embodiment, between two adjacent activated carbon anti - detachment meshes, a single - layer activated carbon filler 12 is filled. The single - layer activated carbon filler 12 can not only make the activated carbon be fully utilized, but also prevent the activated carbon from getting wet or breeding bacteria due to the excessive thickness of the activated carbon filler 12.

[0049] Next, the manufacturing method of the activated carbon filtration module 1 of the present invention will be described:

[0050] First, a polypropylene matrix 111 with square holes is manufactured, and activated carbon particles with appropriate particle sizes are selected as the activated carbon filler 12. The conductive net is cut according to the size of the polypropylene matrix 111.

[0051] Next, a conductive layer 112 is attached to the pore walls of the square holes of the polypropylene matrix 111.

[0052] Then, activated carbon anti - detachment meshes are laid on both sides of the polypropylene matrix 111.

[0053] In the square holes formed by the activated carbon anti - detachment mesh and the accommodation through - holes 114, the activated carbon filler 12 is filled. The number of layers of the activated carbon filler 12 is preferably one layer.

[0054] Finally, check whether the number of layers of the matrix 11 and the activated carbon filler 12 in the activated carbon filtration module 1 reaches the required number of layers. If it is less than the required number of layers, repeat the above process until the number of layers of the matrix 11 and the activated carbon filler 12 in the activated carbon filtration module 1 reaches the required number of layers, and then check whether the activated carbon filtration module 1 is qualified.

[0055] Embodiment 2

[0056] An air purification device 100 according to Embodiment 2 includes the activated carbon filtration module 1 of Embodiment 1, so it has the beneficial effects of Embodiment 1 of the present invention, that is: even if the matrix 11 is enriched with charges, the conductive material can conduct away the charges, and it is not easy to generate an electric field in the accommodation through - holes 114, and it is not easy to ionize the water entering the accommodation through - holes 114. Therefore, it is not easy to generate + H - and other active substances such as OH, which leads to an accelerated synthesis rate of small - molecule organic acids in the activated carbon region.

[0057] Therefore, the air purification device 100 of Embodiment 2 can overcome the defects of short life cycle and low utilization rate of the activated carbon filtration module 1 in the prior art. It is not easy to generate + H - and other active substances such as OH, which leads to an accelerated synthesis rate of small - molecule organic acids in the activated carbon region. In addition, the air purification device 100 of Embodiment 2 has a simple structure, is easy to manufacture, is practical, safe and reliable, and is convenient for implementation and popularization.

[0058] In this embodiment, the air purification device 100 further includes a housing 2 and a dehydration module 3. Among them,

[0059] An air inlet and an air outlet are formed on the housing 2. The dehydration module 3 is arranged inside the housing 2 and is located between the activated carbon filtration module 1 and the air inlet. The dehydration module 3 can dehydrate the air flow passing through the activated carbon filtration module 1, thereby reducing the water content in the air flow passing through the activated carbon filtration module 1, reducing the risk of water being ionized to generate active substances such as H+ and OH-, and avoiding the acceleration of the synthesis rate of small molecule organic acids in the activated carbon area.

[0060] The dehydration module 3 can optionally include chemical desiccants such as calcium sulfate and calcium chloride that can be dried by combining with water to form hydrates, or can also be selected as physical desiccants such as silica gel and activated alumina that can be dried by physically adsorbing water.

[0061] Preferably, in this embodiment, the dehydration module 3 includes nano-titanium dioxide filler. The air purification device 100 further includes a light source suitable for irradiating the dehydration module 3. The nano-titanium dioxide filler can not only adsorb water, but also catalytically degrade organic substances such as formaldehyde when irradiated by the light source, which can further improve the air purification effect of the air purification device.

[0062] In this embodiment, the air purification device 100 preferably further includes a heating regeneration mechanism 4. The heating regeneration mechanism 4 is suitable for heating and regenerating the dehydration module 3 and the activated carbon filtration module 1. The heating regeneration mechanism 4 can be optionally arranged inside the housing 2 and can heat and regenerate the activated carbon filtration module 1 and the dehydration module 3 when powered on. Preferably, in this embodiment, the heating regeneration mechanism 4 is independently arranged, and the user can disassemble the activated carbon filtration module 1 and the dehydration module 3 and use the heating regeneration mechanism 4 to heat them, which enables the operator to easily move the heating regeneration mechanism 4 and the module to be heated and regenerated outdoors and heat them to avoid the gas generated during the heating process from polluting the indoor environment without moving the entire air purification device 100. The heating regeneration mechanism 4 is preferably but not limited to an electric heating wire, a PTC heating element or a quartz tube heating element, etc.

[0063] In this embodiment, the air purification device 100 preferably further includes an electrostatic dust removal mechanism 5. It is arranged between the activated carbon filtration module 1 and the air inlet. The electrostatic dust removal mechanism 5 can remove smaller-sized suspended pollutants (such as PM2.5) in the air flow, can improve the air purification effect of the air purification device 100, and helps to extend the service life of the activated carbon filtration module 1.

[0064] In this embodiment, the air purification device 100 further includes a filter screen 6 disposed in the housing 2 and located between the activated carbon filtration module 1 and the air inlet. The filter screen 6 can filter contaminants with larger sizes (such as hair, etc.). Preferably, the filter screen 6 is disposed between the electrostatic dust removal mechanism 5 and the air inlet of the housing 2, which can ensure that the subsequent purification module can work efficiently. In this embodiment, the air purification device 100 further includes a fan 7 connected to the air inlet or the air outlet of the housing 2. The fan 7 can drive the air flow to enter the housing 2 through the air inlet and flow out through the air outlet, which can accelerate the air purification rate of the air purification device.

[0065] In summary, the activated carbon filtration module 1 of Embodiment 1 of the present invention and the air purification device 100 of Embodiment 2 can overcome the defects of the short service life cycle and low utilization rate of the activated carbon filtration module 1 in the prior art, and the defects that it is not easy to generate active substances such as H+ and OH-, resulting in an accelerated synthesis rate of small molecular organic acids in the activated carbon region. Moreover, the structure is simple, the manufacturing is convenient, it is practical, safe and reliable, and it is convenient to implement and promote the application.

[0066] Obviously, the above embodiments are merely examples for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. An activated carbon filtration module, characterized in that, Comprising: A substrate (11) on which a plurality of accommodation through-holes (114) are formed. The pore walls of the accommodation through-holes (114) are made of a conductive material, and the conductive material is adapted to be grounded. Activated carbon filler (12), which is filled in the accommodation through-holes (114) of the substrate (11). The substrate (11) further comprises: A polypropylene substrate (111) on which a plurality of mounting through-holes (113) are formed. The conductive material includes a conductive layer (112) laid on the pore walls of the mounting through-holes. The conductive material further includes an activated carbon anti-detachment net. Both sides of the substrate are covered with the activated carbon anti-detachment net, which is made of a conductor and abuts against the conductive layer (112) and is adapted to be grounded.

2. The activated carbon filtration module according to claim 1, wherein A single layer of activated carbon filler (12) is filled between two adjacent activated carbon anti-detachment nets.

3. An air purification device, characterized in that, Comprising the activated carbon filtration module (1) as claimed in claim 1 or 2.

4. The air purification device according to claim 3, characterized in that, The air purification device (100) further comprises: A housing (2) on which an air inlet and an air outlet are formed. A dehydration module (3), which is disposed in the housing (2) and is located between the activated carbon filtration module (1) and the air inlet.

5. The air purification device according to claim 4, characterized in that, The dehydration module (3) comprises a nano-titanium dioxide filler. The air purification device (100) further comprises a light source disposed in the housing (2) and adapted to irradiate the dehydration module (3).

6. The air purification device according to claim 4, wherein The air purification device (100) further comprises a heating regeneration mechanism (4), which is adapted to heat and regenerate the dehydration module (3) and the activated carbon filtration module (1).

7. The air purification device according to any one of claims 4-6, characterized in that, Further comprising an electrostatic dust removal mechanism (5), which is disposed between the activated carbon filtration module (1) and the air inlet.

8. The air purification device according to any one of claims 4 to 6, characterized in that, The air purification device (100) further comprises a filter screen (6) disposed in the housing (2) and located between the activated carbon filtration module (1) and the air inlet.

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