CN213313902U - Air purification device and air filtering module - Google Patents
Air purification device and air filtering module Download PDFInfo
- Publication number
- CN213313902U CN213313902U CN202021772824.8U CN202021772824U CN213313902U CN 213313902 U CN213313902 U CN 213313902U CN 202021772824 U CN202021772824 U CN 202021772824U CN 213313902 U CN213313902 U CN 213313902U
- Authority
- CN
- China
- Prior art keywords
- filtering
- filter
- air
- module
- unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
The utility model discloses an air purification device and filtration module. The air filtering module comprises a plurality of first sealing strips and a plurality of filtering units, each filtering unit is provided with a plurality of meshes, the first sealing strips surround each filtering unit, the first sealing strips are bonded with each filtering unit, and the filtering integrated module is constructed by splicing the plurality of filtering units. According to the utility model discloses an air filter module is through utilizing a plurality of filter unit concatenations in order to construct air filter module to can utilize a soak to carry out independent flooding to every filter unit, and then the filter unit who has soaked different soaks possesses different functions, and the filter unit concatenation that possesses different functions can make air filter module possess different functions when together.
Description
Technical Field
The utility model belongs to the technical field of the clarification plant technique and specifically relates to an air purification device and filtration module are related to.
Background
In the related art, the air purifier only has the functions of removing particulate dust and gaseous pollutants, has a single function, and can only filter the particulate dust, and the air purifier is called a single-effect filter. In order to meet the requirements of different users, a composite filter is developed, namely, a function of removing harmful gas pollutants is added on a filter screen, and meanwhile, the filter is provided with a filter for removing particulate matters, dust and gaseous pollutants, and the filter is called a double-effect filter or a composite filter.
In the market, activated carbon with extremely high adsorption effect on gaseous pollutants is usually used as a raw material, and a corresponding chemical formula is properly added to prepare the composite filter through different structures. Common structures include honeycomb carbon filling, honeycomb carbon bonding, grid carbon bonding and sandwich structures. The structural shortcomings of the above composite screens were analyzed as follows:
1) filling carbon into the honeycomb: the disadvantages are as follows: the conversion rate is low; secondly, the structure is over traditional; activated carbon is easy to displace and collide with each other in the using and transporting processes to generate carbon powder; high resistance;
2) bonding carbon to the honeycomb: the disadvantages are as follows: the conversion rate is low; secondly, the structure is over traditional; the honeycomb has larger hollow gap, and a large amount of air can not contact the air, so that the conversion rate is lower;
3) c, grid carbon adhesion: the disadvantages are as follows: the multilayer activated carbon has higher lamination resistance;
4) the sandwich structure: the disadvantages are as follows: the problem of peculiar smell is difficult to solve; the amount of carbon is limited by the thickness of the material;
5) after the activated carbon powder is pressed and formed, the phenomena of powder falling, fragmentation and the like are easy to occur in the transportation process due to larger size.
In addition, in the production process of the composite filter screen, two surfaces of the composite filter screen need to be respectively soaked, the operation is difficult to control the amount of the soaking solution, and chemical reaction is easy to occur in the two soaking processes, so that the purification and filtration functions are ineffective.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an air filtration module, air filtration module has purifying effect good, and formaldehyde, VOC's clearance reaches more than 99% (refer to national standard), simple structure's advantage.
The utility model also provides an air purification device, air purification device has as above advantage.
According to the utility model discloses air filter module, including a plurality of first sealing strips and a plurality of filter unit, every the filter unit has a plurality of meshs, first sealing strip encircles in every the periphery of filter unit, just first sealing strip and every the periphery of filter unit bonds, and is a plurality of the filter unit concatenation filters the collection moulding piece in order to construct, and first sealing strip can prevent that the filter unit substrate is cracked, fall the powder.
According to the utility model discloses filtration module is through utilizing a plurality of filter unit concatenations in order to construct filtration module to can utilize a soak to carry out alone flooding to every filter unit, and then the filter unit who has steeped different soaks possesses different functions, and the filter unit concatenation that possesses different functions can make filtration module possess different functions when being put together.
In some embodiments, the plurality of filtering units includes a first filtering unit having a first filtering function and a second filtering unit having a second filtering function, and the first filtering function is different from the second filtering function.
In some embodiments, the air filtering module further includes a first frame disposed at an outer periphery of the filtering integrated module, a fixing device is disposed at a windward side of the filtering integrated module, the fixing device abuts against the inside of the first frame, and the fixing device is in a strip-shaped or net-shaped structure.
In some embodiments, the air filter module further comprises a housing surrounding the outer periphery of the first frame, and a second sealing strip is provided on the housing for sealing a gap between the inner peripheral wall of the housing and the outer peripheral wall of the first frame.
In some embodiments, the filter element is rectangular.
In some embodiments, the mesh size of the filtration unit is 50-200 mesh, preferably 100-200 mesh.
In some embodiments, the filter unit has a first size in a first direction, a second size in a second direction, and a third size in a third direction, any two directions of the first direction, the second direction, and the third direction are perpendicular to each other, a value range of the first size is 10-100mm, a value range of the second size is 10-100mm, and a value range of the third size is 10-100 mm.
In some embodiments, the air filtration module further comprises a filter screen stacked with the filter integrated module, the filter screen being located upstream or downstream of the filter integrated module in the direction of airflow flow.
In some embodiments, the filter screen is an activated carbon filter screen, and the activated carbon filter screen is a paper honeycomb bonded carbon structure, a mesh bonded carbon structure, a sandwich sandwiched carbon cloth structure, a sponge bonded carbon structure or a metal mesh folded bonded carbon structure.
In some embodiments, the filter mesh is honeycomb-shaped.
According to the utility model discloses air purification device, include: a housing defining an air outlet duct; the air filtering module is the air filtering module, and the air filtering module is detachably connected with the machine shell.
According to the utility model discloses air purification device is through utilizing a plurality of filter unit concatenations in order to construct the filtration module to can utilize a soak to soak alone every filter unit, and then the filter unit who has soaked different soaks possesses different functions, and the filter unit concatenation that possesses different functions can make the filtration module possess different functions when being put together.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural view of a filter unit of an air filter module according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an air filter module according to an embodiment of the present invention after a plurality of filter units are spliced;
FIG. 3 is a schematic structural view of an air filtration module according to an embodiment of the present invention;
fig. 4 is a front view of an air filtration module according to an embodiment of the present invention;
fig. 5 is a rear view of an air filtration module according to an embodiment of the present invention.
Reference numerals:
the air filter module 100 is provided with a filter element,
a first sealing strip 110, a filtering unit 120, a mesh 121;
the filter mesh 130, the housing 140, the handle 141,
a first frame 151, a fixing rib 152, and a second sealing strip 153.
Detailed Description
Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary.
As shown in fig. 1 and 3, an air filter module 100 according to an embodiment of the present invention includes a plurality of first sealing strips 110 and a plurality of filter units 120. Wherein, each filtering unit 120 has a plurality of meshes 121, and the plurality of filtering units 120 are spliced to construct a filtering integrated module. It will be appreciated that the air filtration module 100 is configured as a filtration integrated module that may be spliced from a plurality of filtration units 120. Thus, on the one hand, the air filter modules 100 can be spliced into a predetermined shape by the filter units 120 according to the needs of the customer; on the other hand, the air filter module 100 with a larger size can be divided into a plurality of small modules, and the filter unit 120 with a small structure has the advantages of good structural stability and strong integrity, so that the phenomena of slag falling, powder falling, fragmentation and the like easily occurring in a large-size structure can be avoided.
As shown in fig. 1, a first sealing strip 110 surrounds the periphery of each filter unit 120, and the first sealing strip is bonded to the filter units 120, so that the air filter module 100 can be fixed and protected. In the description of the present invention, "a plurality" means two or more.
It should be noted that, by providing the first sealing strip 110, the filter unit 120 can be fixed by the fixing function of the first sealing strip 110, so as to prevent the activated carbon module on the filter unit 120 from being cracked and broken, thereby improving the structural stability of the air filter module 100.
In addition, it should be noted that during the process of manufacturing the filtering units 120, the filtering units 120 may be immersed individually, and different soaking solutions may be used for different filtering units 120, so that the filtering units 120 may have different functions (for example, sterilization, deodorization, mildew prevention, virus prevention, etc.). When the filter units 120 having different functions are spliced into the air filter module 100, the air filter module 100 has different functions. Compared with the air filtering module in the related art, in order to enable the air filtering module to have different functions, two opposite side surfaces of the air filtering module need to be respectively soaked, and in the process of different soaking processes, different soaking solutions are mutually contacted, so that chemical reaction is easy to occur, and further the function is failed; furthermore, the amount of soaking liquid is difficult to control during immersion, which leads to difficulties in controlling the functional properties of the air filter module.
According to the utility model discloses air filter module 100, through utilizing a plurality of filter unit 120 concatenations in order to construct air filter module 100, thereby can correspond flooding with a filter unit 120 and a soak, and a plurality of some filter unit 120 flooding a soak, another some filter unit 120 flooding another kind of soak in a plurality of, and then to a plurality of filter unit 120, the filter unit 120 that has steeped different soaks possesses different functions, when the filter unit 120 concatenation that possesses different functions is together, can make air filter module 100 possess different functions. Therefore, two different soaking solutions do not need to be soaked in the same filtering unit 120, so that chemical reactions of various soaking solutions in the same filtering unit 120 are avoided, on one hand, the yield of a single filtering unit 120 is improved, and on the other hand, the soaking times and the soaking period of the filtering unit 120 can be simplified.
In some embodiments, the plurality of filtering units 120 includes a first filtering unit having a first filtering function and a second filtering unit having a second filtering function, and the first filtering function is different from the second filtering function. Further, the first filtering unit is made by soaking in a soaking solution, so that the first filtering unit has a first filtering function; the second filtering unit is made by soaking another soaking solution, so that the second filtering unit has a second filtering function, and the first filtering function is different from the second filtering function. Therefore, the filtering units 12 with different functions can be assembled to form the air filtering module 100 with multiple filtering and purifying functions.
For example, the first filtering function is a sterilization function, and the second filtering function is a deodorization function. The first filtering unit is soaked in the first soaking liquid once, so that the first filtering unit has a sterilization function; the second filtering unit is soaked in the second soaking liquid once, so that the second filtering unit has a deodorizing function. The first filter unit having the sterilization function and the second filter unit having the deodorization function can be spliced to construct the air filter module 100. At this time, the air filter module 100 has a deodorizing and sterilizing function.
As shown in fig. 2-4, according to some embodiments of the present disclosure, air filtration module 100 further includes a first frame 151 and a housing 140. The periphery of the filtering integrated module is arranged on the first frame 151, a fixing device is arranged on the windward side of the filtering integrated module, and two ends of the fixing device are both arranged in the first frame 151. The fixing device can be in a strip or net structure. Further, the fixing means comprises a plurality of fixing ribs 152. The fixing ribs 152 may fix the plurality of filter units 120, so that structural stability of the air filter module 100 may be improved.
The outer casing 140 surrounds the outer periphery of the first frame 151, and a second sealing strip 153 is disposed on the outer casing 140 for sealing a gap between the inner peripheral wall of the outer casing 140 and the outer peripheral wall of the first frame 151. Thereby, the air flow may more pass through the filter unit 120, so that the purifying effect of the air filter module 100 may be improved. To facilitate access to the air cleaning device, in some embodiments, the housing also has a handle, as shown in fig. 3, 5.
According to some embodiments of the present invention, the filter unit 120 may be rectangular. Thereby facilitating splicing of multiple filter elements 120. As shown in FIG. 1, the size of the mesh 121 of the filter unit 120 may be 50-200 mesh, preferably 100-200 mesh. Therefore, the plurality of honeycomb-shaped filter units 120 can be customized according to requirements, and the composite filter screen can be constructed by splicing the plurality of filter units 120. In addition, the wind resistance of the air filter module 100 can be reduced by controlling the mesh number of the meshes 121, so that the air filter module 100 can obtain more efficient purification performance. The plurality of mesh openings 121 may be arranged in a honeycomb shape. Each mesh 121 may be square, circular, or polygonal.
In some embodiments, the filter unit 120 has a first dimension in a first direction, a second dimension in a second direction, and a third dimension in a third direction, any two directions of the first direction, the second direction, and the third direction are perpendicular to each other, the first dimension has a value in a range of 10-100mm, the second dimension has a value in a range of 10-100mm, and the third dimension has a value in a range of 10-100 mm. For example, the first direction may be the length of the air filter module 100, the second direction may be the width of the air filter module 100, and the third direction may be the thickness of the air filter module 100, where the length of the air filter module 100 ranges from 10 mm to 100mm, the width of the air filter module 100 ranges from 10 mm to 100mm, and the thickness of the air filter module 100 ranges from 10 mm to 100mm, and the filter unit 120 in the size has good compression formability, is not easily broken during transportation, and has good filtering performance.
Thus, on the one hand, the air filter modules 100 can be spliced into a predetermined shape by the filter units 120 according to the needs of the customer; on the other hand, the air filter module 100 with a larger size can be divided into a plurality of small modules, and the filter unit 120 with a small structure has the advantages of good structural stability and strong integrity, so that the phenomena of slag falling, powder falling, fragmentation and the like easily occurring in a large-size structure can be avoided.
In order to strengthen air purification device's filter effect, according to the utility model discloses a some embodiments, the air filtration module still includes the filter screen, and the filter screen is range upon range of with the filtration collection moulding piece and is set up, and in the direction that the air current flows, the filter screen is located the upper reaches or the low reaches of filtering collection moulding piece. Furthermore, the filter screen can be an active carbon filter screen, and the filter screen is honeycomb-shaped. Thereby, the purification rate of the air purification device can be improved. In some embodiments, the activated carbon filter mesh is a paper honeycomb bonded carbon structure, a mesh bonded carbon structure, a sandwich sandwiched carbon cloth structure, a sponge bonded carbon structure or a metal mesh folded bonded carbon structure. Thereby increasing the functional versatility of the air filtration module 100.
An air filtration module 100 according to an embodiment of the present invention is described below as a specific example. It is to be understood that the following description is illustrative only and is not intended to be in any way limiting.
In this embodiment, the filter unit 120 is a specially made activated carbon honeycomb, which can be made by mixing activated carbon and chemical formula according to a certain ratio (weight ratio 1: 3) according to the customer's requirement, and has high FCADR performance. The test product is formed by splicing a plurality of filtering units 120, and the test is carried out by taking formaldehyde as an example:
1) when the test article adopts a paper honeycomb viscous carbon structure, the size of the paper honeycomb viscous carbon structure is 320 × 91mm, the FCADR of 150-,
2) when the test article is an activated carbon honeycomb and the size is 320 × 30mm, taking formaldehyde as an example, FCADR of 260-390CMH is measured, the load air volume is 700CMH, and the conversion rate is about 37-55%.
The conversion rate refers to FCADR/load air volume, namely the ratio relation between the FCADR value and the load air volume, and can fully reflect the formaldehyde adsorption effect of the filter screen under the unit air volume. Wherein, the value of FCADR refers to the clean air volume of formaldehyde, refer to the clean air volume test method of gaseous pollutants in appendix C (normative appendix) of GB/T18801-2015; the load air volume refers to the air volume of the air outlet when the air purifier runs after carrying the filter screen.
According to the utility model discloses air purification device, include: a cabinet and an air filtration module as described above. Wherein, the air flue is injectd to the casing, and air filter module is connected with casing detachably, is convenient for from this dismantle, change the operation such as air filter module.
According to the utility model discloses air purification device is through utilizing a plurality of filter unit 120 concatenations in order to construct filtration module 100 to can utilize a soak to carry out independent flooding to every filter unit 120, and then the filter unit 120 that has steeped different soaks possesses different functions, and when the filter unit 120 concatenation that possesses different functions was put together, can make filtration module 100 possess different functions.
According to the embodiment of the present invention, the air filter module 100 may be the air filter module as described above, and the process method includes:
selecting a base material;
pressing the substrate to construct a filter unit 120 having a plurality of meshes;
soaking the filter unit 120 in a soaking solution to constant weight or for 1-2 hours at 20-30 ℃; it should be noted here that, when the filtering unit 120 is immersed, the filtering unit 120 may be completely immersed in the immersion liquid, which facilitates to control a contact area between the immersion liquid and the filtering unit 120, and on the other hand, since the filtering unit 120 is immersed in only one immersion liquid without two immersion processes, a process difficulty in immersing the filtering unit 120 may be reduced.
Drying the immersed filtering unit 120 at the temperature of more than 60 ℃ to constant weight, or drying for 0.5-1.5 h;
the plurality of filter units 120 are dried and spliced to construct the air filter module 100.
According to the process of the air filter module 100 of the present invention, when the filter unit 120 is immersed, the filter unit 120 can be immersed once, so that the filter unit 120 has a filtering function (for example, one of sterilization, deodorization, mildew prevention, and virus prevention); different filter unit 120 can choose different soak solutions for use and steep to the filter unit 120 that has steeped different soak solutions possesses different functions, and when the filter unit 120 concatenation that will possess different functions formed air filtration module 100, can make air filtration module 100 possess different filtering capability.
According to some embodiments of the present disclosure, the activated carbon fill volume in the substrate comprises 25-80% of the total volume of the filtration unit 120. Thereby, the filtering effect of the air filter module 100 can be improved. Of course, to increase the filtration effectiveness of air filtration module 100, in some embodiments, the activated carbon packing density within the substrate is 40-80%. In some embodiments, the substrate further comprises silica, alumina, acrylic macroporous resin, or mixtures thereof. Therefore, the functional diversity of the active carbon substrate can be improved.
As shown in FIG. 1, the size of the mesh 121 of the filter unit 120 may be 50-200 mesh, preferably 100-200 mesh. Therefore, the filter unit 120 with a plurality of meshes can be customized according to requirements, and the composite filter screen can be constructed by splicing a plurality of filter units 120. In addition, the wind resistance of the air filter module 100 can be reduced by controlling the mesh number of the meshes 121, so that the air filter module 100 can obtain more efficient purification performance.
In some embodiments, the filtering unit 120 has a first size in a first direction, a second size in a second direction, and a third size in a third direction, any two directions in the first direction, the second direction, and the third direction are perpendicular to each other, a value range of the first size is 10-100mm, a value range of the second size is 10-100mm, and a value range of the third size is 10-100 mm. For example, the first direction may be the length of the air filter module 100, the second direction may be the width of the air filter module 100, and the third direction may be the thickness of the air filter module 100, where the length of the air filter module 100 ranges from 10 mm to 100mm, the width of the air filter module 100 ranges from 10 mm to 100mm, and the thickness of the air filter module 100 ranges from 10 mm to 100mm
Thus, on the one hand, the air filter modules 100 can be spliced into a predetermined shape by the filter units 120 according to the needs of the customer; on the other hand, the air filter module 100 with a larger size can be divided into a plurality of small modules, and the filter unit 120 with a small structure has the advantages of good structural stability and strong integrity, so that the phenomena of slag falling, powder falling, fragmentation and the like easily occurring in a large-size structure can be avoided.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. An air filtering module is characterized by comprising a plurality of first sealing strips and a plurality of filtering units, wherein each filtering unit is provided with a plurality of meshes, the first sealing strips surround the periphery of each filtering unit, the first sealing strips are bonded with each filtering unit, the filtering units are spliced to construct a filtering integrated module,
a plurality of the filter unit is including the first filter unit that possesses first filtering capability and the second filter unit that possesses second filtering capability, first filtering capability with second filtering capability is different.
2. The air filtering module according to claim 1, further comprising a first frame disposed at an outer periphery of the filtering integrated module, wherein a fixing device is disposed at a windward side of the filtering integrated module, the fixing device abuts against the inside of the first frame, and the fixing device is in a strip or net structure.
3. An air filtration module according to claim 2 further comprising a housing surrounding the outer periphery of said first frame, said housing having a second seal disposed thereon for sealing a gap between said housing inner peripheral wall and said first frame outer peripheral wall.
4. An air filtration module according to claim 1 wherein the filter elements are rectangular.
5. An air filtration module according to claim 1, wherein the filter elements have a mesh size of 50-200 mesh.
6. An air filtration module according to claim 1 wherein the filter element has a first dimension in a first direction, a second dimension in a second direction, and a third dimension in a third direction, any two of the first direction, the second direction, and the third direction being perpendicular to one another,
the first size ranges from 10 mm to 100mm, the second size ranges from 10 mm to 100mm, and the third size ranges from 10 mm to 100 mm.
7. The air filtration module of claim 1 further comprising a filter screen stacked with the filter integrated module, the filter screen being located upstream or downstream of the filter integrated module in a direction of airflow flow.
8. The air filtration module of claim 7, wherein the filter screen is an activated carbon filter screen, and the activated carbon filter screen is a paper honeycomb bonded carbon structure, a mesh bonded carbon structure, a sandwich sandwiched carbon cloth structure, a sponge bonded carbon structure, or a metal mesh folded bonded carbon structure.
9. An air filtration module according to claim 7 wherein the filter screen is honeycomb shaped.
10. An air purification apparatus, comprising:
a housing defining an air outlet duct;
an air filtration module according to any one of claims 1 to 9, removably connected with the cabinet.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202021772824.8U CN213313902U (en) | 2020-08-21 | 2020-08-21 | Air purification device and air filtering module |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202021772824.8U CN213313902U (en) | 2020-08-21 | 2020-08-21 | Air purification device and air filtering module |
Publications (1)
Publication Number | Publication Date |
---|---|
CN213313902U true CN213313902U (en) | 2021-06-01 |
Family
ID=76099138
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202021772824.8U Active CN213313902U (en) | 2020-08-21 | 2020-08-21 | Air purification device and air filtering module |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN213313902U (en) |
-
2020
- 2020-08-21 CN CN202021772824.8U patent/CN213313902U/en active Active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN212236725U (en) | Filtering structure | |
CN105435554B (en) | A kind of air cleaning unit | |
CN204582894U (en) | Purification of air tabular complex function filter screen | |
CN213313902U (en) | Air purification device and air filtering module | |
KR100358262B1 (en) | Air filter and its manufacturing method bound activated carbon on mesh | |
CN111841184A (en) | Air purification device, air filtration module and process method | |
CN210543985U (en) | High-efficiency filter screen | |
CN210186650U (en) | Removable medium that purifies removes formaldehyde air purifier filter core | |
CN104147850A (en) | Porous diatom ooze composite ceramic filter element | |
CN204830225U (en) | Air purifier | |
CN210131485U (en) | Filter element module for air filtration | |
CN216259612U (en) | Filter core and cigarette machine | |
CN212818674U (en) | Multi-bag type air filter | |
CN211537128U (en) | Harmful gas filter is removed to institutional advancement type | |
CN205323423U (en) | Air purifying device | |
CN211084287U (en) | Passive air purifier | |
CN213192889U (en) | Bag filter | |
CN204815967U (en) | Air purifier is with compound filter media | |
CN209484825U (en) | Filter screen subassembly and air purifier | |
CN209917483U (en) | Air filter with composite purification function | |
CN113063203A (en) | A filter screen and filter chip for air purification | |
CN208097603U (en) | A kind of air purifying filter mesh | |
CN207478211U (en) | A kind of Efficient textile industry cooking fume control equipment | |
CN105042710A (en) | Fresh air purifier | |
KR100859806B1 (en) | Functional filter and air circulation device including the same |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant |