CN108758754A - Oil-filtering apparatus, manufacturing method and kitchen ventilator - Google Patents
Oil-filtering apparatus, manufacturing method and kitchen ventilator Download PDFInfo
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- CN108758754A CN108758754A CN201810991913.2A CN201810991913A CN108758754A CN 108758754 A CN108758754 A CN 108758754A CN 201810991913 A CN201810991913 A CN 201810991913A CN 108758754 A CN108758754 A CN 108758754A
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- Prior art keywords
- oil
- cleaner screen
- hydrophilic
- filtering apparatus
- oil cleaner
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- 238000001914 filtration Methods 0.000 title claims abstract description 65
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 238000000576 coating method Methods 0.000 claims abstract description 70
- 239000011248 coating agent Substances 0.000 claims abstract description 68
- 239000000779 smoke Substances 0.000 claims abstract description 58
- 230000000391 smoking effect Effects 0.000 claims abstract description 18
- 238000005507 spraying Methods 0.000 claims abstract description 7
- 239000003921 oil Substances 0.000 claims description 246
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 32
- 239000000463 material Substances 0.000 claims description 25
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 22
- 238000012545 processing Methods 0.000 claims description 17
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 16
- 239000007921 spray Substances 0.000 claims description 16
- 239000008367 deionised water Substances 0.000 claims description 15
- 229910021641 deionized water Inorganic materials 0.000 claims description 15
- 238000004140 cleaning Methods 0.000 claims description 12
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 10
- 238000004659 sterilization and disinfection Methods 0.000 claims description 9
- 239000010936 titanium Substances 0.000 claims description 9
- 229910052719 titanium Inorganic materials 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- 239000004615 ingredient Substances 0.000 claims description 8
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 8
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 8
- 235000012239 silicon dioxide Nutrition 0.000 claims description 8
- 239000004094 surface-active agent Substances 0.000 claims description 8
- 239000004408 titanium dioxide Substances 0.000 claims description 8
- 150000002191 fatty alcohols Chemical class 0.000 claims description 7
- 239000005543 nano-size silicon particle Substances 0.000 claims description 7
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 7
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 7
- 230000007797 corrosion Effects 0.000 claims description 6
- 238000005260 corrosion Methods 0.000 claims description 6
- 229910000502 Li-aluminosilicate Inorganic materials 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- -1 silazane Substances 0.000 claims description 3
- 230000001954 sterilising effect Effects 0.000 claims 1
- 238000000746 purification Methods 0.000 abstract description 16
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 11
- 239000002245 particle Substances 0.000 description 7
- 239000003517 fume Substances 0.000 description 6
- 239000003973 paint Substances 0.000 description 6
- 238000010411 cooking Methods 0.000 description 5
- 238000005238 degreasing Methods 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 230000009931 harmful effect Effects 0.000 description 4
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910003460 diamond Inorganic materials 0.000 description 3
- 239000010432 diamond Substances 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 229910021389 graphene Inorganic materials 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000004071 soot Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 241000193830 Bacillus <bacterium> Species 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229910003978 SiClx Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 241000191967 Staphylococcus aureus Species 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- ZXRRHFSTAFVGOC-UHFFFAOYSA-N [AlH3].[K] Chemical compound [AlH3].[K] ZXRRHFSTAFVGOC-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 210000002429 large intestine Anatomy 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000010148 water-pollination Effects 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2035—Arrangement or mounting of filters
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filtering Materials (AREA)
Abstract
The present invention provides a kind of oil-filtering apparatus, manufacturing method and kitchen ventilators, are related to purification technology field.The oil-filtering apparatus includes oil cleaner screen, and oil cleaner screen is equipped with oil filter hole, and oil cleaner screen is covered with hydrophilic and oleophobic coating in the one side that oil smoke enters；The one side that the manufacturing method is used in oil cleaner screen enter the hydrophilic and oleophobic coating spraying in above-mentioned oil-filtering apparatus backwards to oil smoke；The kitchen ventilator includes shell and above-mentioned oil-filtering apparatus, and shell is equipped with interconnected smoking port and smoke outlet, and oil-filtering apparatus is mounted on shell, and is covered at smoking port.The setting of hydrophilic and oleophobic coating makes greasy dirt be not easy to be adhered on oil cleaner screen in the oil-filtering apparatus, to reduce blocking of the greasy dirt to oil filter hole, improves the purification efficiency of oil-filtering apparatus and kitchen ventilator.
Description
Technical field
The present invention relates to a kind of purification technology field more particularly to oil-filtering apparatus, manufacturing method and kitchen ventilators.
Background technology
The manufacturing process of Chinese tradition cooking culture includes decocting, frying, is fried, is roasting etc., is produced during making food big
The oil smoke of amount, and oil smoke is not only more serious to the environmental pollution in kitchen, and also kitchen operation personnel stay in oil smoke surroundings for a long time
It is larger to body harm, it is serious, or even cancer can be suffered from, therefore, kitchen ventilator is widely used among kitchen, kitchen ventilator system
Family kitchen is the electric appliance of generated oil smoke etc when exhaustion is cooked.
When kitchen ventilator is run, for external oil smoke under the action of kitchen ventilator inside and outside differential pressure, the smoking port through kitchen ventilator enters it
Enclosure interior after flowing through shell, is escaped and enter through its smoke outlet in common flue.In existing kitchen ventilator, shell is generally understood
On oil network is installed, oil network is tentatively filtered to entering the oil smoke in shell, to reduce the greasy dirt in oil smoke air-flow to shell
Inner wall and the oil pollution for installing each component inside housings；Kitchen ventilator uses metal oil network substantially at present, uses a period of time
Afterwards, the greasy dirt of oil network filtering is adhered in oil network, and cleanliness factor is poor and oil network is caused to block being continuing with for influence oil network, simultaneously
The ventilation rate of oil network reduces the purification efficiency for also influencing kitchen ventilator.
That is, being easily adhered greasy dirt on oil-filtering apparatus in existing kitchen ventilator, the oil filter hole on oil-filtering apparatus is easy to block, and leads
Cause oil-filtering apparatus oil filter effect poor, and the ventilation rate of oil-filtering apparatus reduces the purification efficiency for influencing kitchen ventilator.
Invention content
The purpose of the present invention is to provide a kind of oil-filtering apparatus, manufacturing method and kitchen ventilators, to solve to deposit in the prior art
Oil-filtering apparatus on be easily adhered greasy dirt, oil filter hole is easy to block, cause oil-filtering apparatus oil filter effect poor, and oil-filtering apparatus
Ventilation rate reduces the technical issues of purification efficiency for influencing kitchen ventilator.
Oil-filtering apparatus provided by the invention, including oil cleaner screen, the oil cleaner screen are equipped with oil filter hole, and the oil cleaner screen is backwards
It is covered with hydrophilic and oleophobic coating in the one side that oil smoke enters.
Further, hydrophilic and oleophilic coating is covered in the one side that the oil cleaner screen enters towards oil smoke.
Further, nano-disinfection material is added in the hydrophilic and oleophobic coating；And/or the hydrophilic and oleophilic coating
In be added with nano-disinfection material.
Further, Heat Conduction Material is added in the hydrophilic and oleophobic coating；And/or add in the hydrophilic and oleophilic coating
Added with Heat Conduction Material.
Further, resistant material is added in the hydrophilic and oleophobic coating；And/or in the hydrophilic and oleophilic coating
Added with resistant material.
Further, nano silicon dioxide, alundum (Al2O3), zirconium oxide, alumina silicate are included in the hydrophilic and oleophobic coating
Potassium, titanium dioxide, silazane, surfactant and deionized water, each Ingredients Weight proportioning are as follows：Nano silicon dioxide is
20% -45%, it be 1% -5%, lithium aluminium silicate is 1% -12%, titanium dioxide that alundum (Al2O3), which is 5% -12%, zirconium oxide,
It is 8% -22%, surfactant is 0.1% -2% that titanium, which is 1% -16%, silazane, remaining as deionized water.
Further, in the hydrophilic and oleophilic coating comprising polysilicate modified compound, nanometer Aluminum sol, Ludox,
Nano-titanium colloidal sol, fatty alcohol polyoxyethylene ether, nonionic fluorosurfactant and deionized water, each Ingredients Weight is with such as
Under：Polysilicate modified compound is 30% -50%, nanometer Aluminum sol be 10% -20%, Ludox be 10% -30%,
Nano-titanium colloidal sol is that 1% -5%, fatty alcohol polyoxyethylene ether is that 0.5% -2%, nonionic fluorosurfactant is
0.01% -0.05%, remaining as deionized water.
Further, the oil cleaner screen is taper, and the necking end of the oil cleaner screen is equipped with oil trap, is set on the oil trap
There is oil guiding hole.
It is another object of the present invention to provide a kind of manufacturing methods, and being used for will be hydrophilic and oleophobic in above-mentioned oil-filtering apparatus
In oil cleaner screen in the one side that oil smoke enters, concrete operations include the following steps coating spraying：
S100 carries out ungrease treatment to the surface of oil cleaner screen；
S200 starts the cleaning processing the surface of oil cleaner screen；
S300 carries out drying and processing to the surface of oil cleaner screen；
The hydrophilic and oleophobic coating of surface spraying of S400 to oil cleaner screen, wherein construction temperature is 10-30 DEG C, relative humidity is
45%-75%, ejection pressure are 0.6-0.8MPa, spray distance is 15-25 ㎝；
The oil cleaner screen for being coated with hydrophilic and oleophobic coating is carried out baking processing by S500.
It is another object of the present invention to provide a kind of kitchen ventilator, including shell and above-mentioned oil-filtering apparatus, the shells
It is equipped with interconnected smoking port and smoke outlet, the oil-filtering apparatus installation on the housing, and covers at the smoking
At mouthful.
Oil-filtering apparatus of the present invention, manufacturing method and kitchen ventilator have the beneficial effect that：
Oil-filtering apparatus, manufacturing method and kitchen ventilator provided by the invention, wherein oil-filtering apparatus includes for oil smoke air-flow
In smoke particle be filtered the oil cleaner screen of purification, oil cleaner screen is equipped with the oil filter hole being filtered, and coated with promoting oil
Dirt is assembled and is detached from the hydrophilic and oleophobic coating of oil cleaner screen；Wherein, the manufacturing method of oil-filtering apparatus includes mainly to oil strain net surface
Degreasing, cleaning, drying, spray-on coating and drying and processing；Wherein, kitchen ventilator includes being used to form oil smoke channel and for installing
The shell of each component and the above-mentioned oil-filtering apparatus for carrying out filtration, purification processing to cooking fume stream.
When culinary art generation oil smoke is needed using kitchen ventilator in kitchen, kitchen ventilator is opened, enclosure interior is in negative pressure state, kitchen
Oil smoke in room flows into enclosure interior under the effect of shell inside and outside differential pressure through the smoking port on shell, and soot gas flows through smoking port
Process need the filtration, purification of the oil-filtering apparatus at smoking port by closure, passed through through the filtered gas of oil filter hole on oil cleaner screen
Smoking port flows into enclosure interior, then passes through smoke outlet and is discharged in common flue, and it is net to the suction of kitchen fume to complete kitchen ventilator
Change is handled.Wherein, oil cleaner screen can carry out preliminary filtration, purification to the oil smoke for entering enclosure interior, to reduce oil smoke in shell
Inside adherency forms greasy dirt and the occurrence of equal harmful effects, accordingly extends the use longevity of each component to each component etc. results in blockage
Life.
Wherein, during oil cleaner screen purifies filtering oil smoke, the one side that oil cleaner screen enters backwards to oil smoke (is defined as oil strain
The back side of net) on be covered with hydrophilic and oleophobic coating, the back side of oil cleaner screen attracts the steam in oil smoke air-flow to condense to be formed on it
It is laid with the water film of shape, the smoke particle in oil smoke air-flow is adhered on oil cleaner screen, is located at the oil droplet on the oil cleaner screen back side and is somebody's turn to do
Face binding force is poor, can only shrink glomeration oil droplet and float on water film, then be rolled down under the effect of gravity along oil cleaner screen, user
An oil-collecting component that can collect greasy dirt only need to be accepted in the bottom of oil cleaner screen.
The oil cleaner screen back side is covered with hydrophilic and oleophobic coating, on the one hand, greasy dirt can be promoted to be shrunk to oil droplet, be rolled along oil cleaner screen
Under, adherency of the greasy dirt on oil cleaner screen is reduced, is blocked caused by oil cleaner screen to reduce greasy dirt, mutually it is ensured that the mistake of oil cleaner screen
Clean-up effect and its air permeability are filtered, and then ensures the clean-up effect of kitchen ventilator；On the other hand, the back side of oil cleaner screen can form water
Film layer reduces adherency of the greasy dirt on oil cleaner screen, and water film separates greasy dirt and oil cleaner screen, when needing cleaning, only needs to use
Rag or diameter, which wipe oil cleaner screen, to remove greasy dirt, and cleaning is convenient；In another aspect, hydrophilic and oleophobic coating setting exists
The oil droplet at the back side of oil cleaner screen, contraction is rolled down along oil cleaner screen, moreover it is possible to reduce greasy dirt in the front of oil cleaner screen (towards oil on oil cleaner screen
The one side that cigarette enters) the occurrence of being easy to be dropped on hearth downwards, pollute hearth and cookware when rolling down, it improves oily
Smoke machine uses cleanliness factor.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is the three dimensional structure diagram at the first visual angle of oil-filtering apparatus provided in an embodiment of the present invention；
Fig. 2 is the three dimensional structure diagram at the second visual angle of oil-filtering apparatus provided in an embodiment of the present invention；
Fig. 3 is the schematic cross-sectional view in the directions A-A in Fig. 1；
Fig. 4 is to be coated with hydrophilic and oleophilic coating and hydrophilic and oleophobic in oil-filtering apparatus provided in an embodiment of the present invention on oil cleaner screen
Schematic cross-sectional view when coating；
Fig. 5 is the structural schematic diagram of oil filter hole in Fig. 1.
Icon：1- oil cleaner screens；The hydrophilic and oleophobic coatings of 2-；3- hydrophilic and oleophilic coatings；4- oil traps；5- oil guide grooves；
6- connecting pins；7- water films；8- oil droplets；11- oil filter holes；12- frames；13- dictyosomes；41- oil guiding holes；42- is clamped
Hole.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
The every other embodiment that personnel are obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for the description present invention and simplify description, do not indicate or imply the indicated device or element must have a particular orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
The present embodiment provides a kind of oil-filtering apparatus, and as Figure 1-Figure 4, including oil cleaner screen 1, oil cleaner screen 1 are equipped with oil strain
Hole 11, oil cleaner screen 1 are covered with hydrophilic and oleophobic coating 2 in the one side that oil smoke enters.
The present embodiment also provides a kind of kitchen ventilator, including shell and above-mentioned oil-filtering apparatus, and shell is equipped with interconnected
Smoking port and smoke outlet, oil-filtering apparatus is mounted on shell, and is covered at smoking port.
The present embodiment also provides a kind of manufacturing method, for the hydrophilic and oleophobic coating 2 in above-mentioned oil-filtering apparatus to be sprayed on
In the one side that oil smoke enters, concrete operations include the following steps oil cleaner screen 1：S100 carries out degreasing to the surface of oil cleaner screen 1
Processing；S200 starts the cleaning processing the surface of oil cleaner screen 1；S300 carries out drying and processing to the surface of oil cleaner screen 1；S400 is to filter
The hydrophilic and oleophobic coating of surface spraying of oil network 1, wherein construction temperature is 10-30 DEG C, relative humidity 45%-75%, sprays
Pressure is 0.6-0.8MPa, spray distance is 15-25 ㎝；S500 dries the oil cleaner screen 1 for being coated with hydrophilic and oleophobic coating 2
Roasting processing.
Oil-filtering apparatus, manufacturing method and kitchen ventilator provided in this embodiment, wherein oil-filtering apparatus includes for cooking fume
Smoke particle in stream is filtered the oil cleaner screen 1 of purification, and oil cleaner screen 1 is equipped with the oil filter hole 11 being filtered, and is coated with
Greasy dirt is promoted to assemble and be detached from the hydrophilic and oleophobic coating 2 of oil cleaner screen 1；Wherein, the manufacturing method of oil-filtering apparatus includes mainly to filter
Degreasing, cleaning, drying, spray-on coating and the drying and processing on 1 surface of oil network；Wherein, kitchen ventilator includes being used to form oil smoke channel
And it is used to install the shell of each component and the above-mentioned oil-filtering apparatus for carrying out filtration, purification processing to cooking fume stream.
When culinary art generation oil smoke is needed using kitchen ventilator in kitchen, kitchen ventilator is opened, enclosure interior is in negative pressure state, kitchen
Oil smoke in room flows into enclosure interior under the effect of shell inside and outside differential pressure through the smoking port on shell, and soot gas flows through smoking port
Process need the filtration, purification of the oil-filtering apparatus at smoking port by closure, through 11 filtered gas of oil filter hole on oil cleaner screen 1
Body flows into enclosure interior through smoking port, then passes through smoke outlet and is discharged in common flue, completes pumping of the kitchen ventilator to kitchen fume
Inhale purified treatment.Wherein, oil cleaner screen 1 can carry out preliminary filtration, purification to the oil smoke for entering enclosure interior, to reduce oil smoke
Adherency forms the occurrence of greasy dirt is to the harmful effects such as each component etc. results in blockage inside housings, accordingly extends each component
Service life.
Wherein, during oil cleaner screen 1 purifies filtering oil smoke, the one side that oil cleaner screen 1 enters backwards to oil smoke (is defined as filtering
The back side of oil network 1) on be covered with hydrophilic and oleophobic coating 2, as shown in figure 4, oil cleaner screen 1 the back side attract oil smoke air-flow in steam
Condensation forms the water film 7 for being laid with shape on it, and the smoke particle in oil smoke air-flow is adhered on oil cleaner screen 1, is located at oil cleaner screen 1
Oil droplet 8 and the face binding force on the back side is poor, can only shrink glomeration oil droplet 8 and float on water film 7, then in gravity
Lower to be rolled down along oil cleaner screen 1, user only need to accept an oil-collecting component that can collect greasy dirt in the bottom of oil cleaner screen 1.
1 back side of oil cleaner screen is covered with hydrophilic and oleophobic coating 2, on the one hand, greasy dirt can be promoted to be shrunk to oil droplet 8, along oil strain
Net 1 rolls down, and reduces adherency of the greasy dirt on oil cleaner screen 1, to reduce greasy dirt to blocking caused by oil cleaner screen 1, mutually it is ensured that filter
The filtration, purification effect and its air permeability of oil network 1, and then ensure the clean-up effect of kitchen ventilator；On the other hand, the back side of oil cleaner screen 1
Water film 7 can be formed, reduces adherency of the greasy dirt on oil cleaner screen 1, and water film 7 separates greasy dirt and oil cleaner screen 1, is needed clear
When washing, need to only rag or diameter be used to wipe and can remove greasy dirt to oil cleaner screen 1, cleaning is convenient；In another aspect, hydrophilic
Oleophobic coating 2 is arranged at the back side of oil cleaner screen 1, and the oil droplet 8 of contraction is rolled down along oil cleaner screen 1, moreover it is possible to reduce greasy dirt in oil cleaner screen 1
Front (one side entered towards oil smoke on oil cleaner screen 1) is easy to be dropped on hearth downwards when rolling down, and is caused to hearth and cookware
The generation of pollution condition, that improves kitchen ventilator uses cleanliness factor.
Specifically, when the back side of oil cleaner screen 1 sprays hydrophilic and oleophobic coating 2, the ungrease treatment in S100 include hot water wash,
Pre- degreasing and main degreasing；Cleaning treatment in S200 includes originally washing for the first time, originally washing, first time pure water are washed for the second time
It is washed with second of pure water；Can test to oil cleaner screen 1 after S300 drying and processings operation, drip on the surface of oil cleaner screen 1, water
Surface nature drawout is dropped in, surface is presented hydrophily, is then considered as and cleans up, and then carries out the spray treatment of S400, tool
Body, wet paint overspray film thickness can be 1-5 μm, and thickness of dry film is 0.5-2 μm；S500 baking processing then include 10min,
80 DEG C of first time baking and 60min, second of 210 DEG C baking.What needs to be explained here is that above-mentioned S100, S200, S300
Deng only be used as step identify, be not intended as sequence of steps.
In the present embodiment, when carrying out the spray treatment of above-mentioned S400, typical but non-limiting temperature of constructing can be 10
℃,15℃,20℃,25℃,30℃；Typical but non-limiting relative humidity of constructing can be 45%, 50%, 55%, 60%,
65%, 70%, 75%；Spray typical but non-limiting ejection pressure can be 0.60MPa, 0.65MPa, 0.70MPa,
0.75MPa,0.80MPa；It can be 15cm, 17cm, 19cm, 21cm, 23cm, 25cm to spray typical but non-limiting distance；
Specifically, can for example choose 20 DEG C of construction temperature, relative humidity 60%, spray pressure 0.70MPa, spray distance 20cm.Spray
It can be 1 μm, 1.5 μm, 2 μm, 2.5 μm, 3 μm, 3.5 μm, 4 μm, 4.5 μm, 5 μ to apply the typical but non-limiting thickness of wet paint film
m；The typical but non-limiting thickness of dry film can be 0.5 μm, 1 μm, 1.5 μm, 2 μm.Specifically, for example spray treatment can be selected
It is 3 μm to select wet paint overspray film thickness, and thickness of dry film is 1.25 μm.
Specifically, in the present embodiment, wind turbine can be installed in the shell of kitchen ventilator, the impeller surface of wind turbine is also covered with parent
Water oleophobic coating 2, the steam in oil smoke air-flow condense to form moisture film in impeller surface, and smoke particle then forms ball in impeller surface
Shape oil droplet 8 floats on moisture film, and when fan operation, oil droplet 8 is thrown away impeller by wheel rotation, to form self cleaning impeller, reduces
Greasy dirt is adhered on impeller harmful effect caused by it.
Specifically, can include nano silicon dioxide, alundum (Al2O3), oxidation in the present embodiment, in hydrophilic and oleophobic coating 2
Zirconium, lithium aluminium silicate, titanium dioxide, silazane, surfactant and deionized water, each Ingredients Weight proportioning are as follows：Nano-silica
SiClx be 20% -45%, alundum (Al2O3) be 5% -12%, zirconium oxide be 1% -5%, lithium aluminium silicate be 1% -12%,
It is 8% -22%, surfactant is 0.1% -2% that titanium dioxide, which is 1% -16%, silazane, remaining as deionized water.
In addition to above-mentioned prepared composition, hydrophilic and oleophobic coating can also be prepared using PP-g-MAH modified polypropenes.
Specifically, in the present embodiment, the typical but non-limiting weight percent of nano silicon dioxide can be 20%,
25%, 30%, 35%, 40%, 45%；The typical but non-limiting weight percent of alundum (Al2O3) can be 5%, 7%,
9%, 11%, 12%；The typical but non-limiting weight percent of zirconium oxide can be 1%, 2%, 3%, 4%, 5%；Silicic acid
The typical but non-limiting weight percent of aluminium potassium can be 1%, 3%, 5%, 7%, 9%, 11%, 12%；Titanium dioxide allusion quotation
Type but unrestricted weight percent can be 1%, 3%, 5%, 7%, 9%, 11%, 13%, 15%, 16%；Silazane
Typical but non-limiting weight percent can be 8%, 10%, 12%, 14%, 16%, 18%, 20%, 22%；It lives on surface
Property agent typical but non-limiting weight percent can be 0.1%, 0.5%, 1%, 1.5%, 2%；Remaining as deionized water.
Specifically, can for example choose nano silicon dioxide be 32.5%, alundum (Al2O3) 8.5%, zirconium oxide 3%, alumina silicate
Potassium is 6.5%, titanium dioxide 8.5%, silazane 15%, surfactant 1%, deionized water 25%.
In the present embodiment, hydrophilic and oleophilic coating 3 can be covered in the one side that oil cleaner screen 1 enters towards oil smoke.Cooking fume
When the head-on crash of stream and oil cleaner screen 1 contacts, in the front condensation of oil cleaner screen 1, simultaneously drawout forms water to the steam in oil smoke air-flow
Film layer 7, the smoke particle in oil smoke air-flow also form oil film in the front condensation of oil cleaner screen 1, the oil film will not agglomeration, from
Oil and oil dripping phenomenon are hung without being formed, the greasy dirt that 1 front of oil cleaner screen adheres to it accordingly is reduced and drips directly down, to stove
The occurrence of platform and cookware etc. pollute；After a period of use, need to only it use rag or paper handkerchief by the oil on oil cleaner screen 1
Dirt wipes out, and cleaning is convenient.
The operating procedure that hydrophilic and oleophilic coating 3 is sprayed on oil cleaner screen 1 is similar with the hydrophilic and oleophobic coating 2 of above-mentioned spraying,
In, in the spray treatment of S400, the wet paint film thickness of hydrophilic and oleophilic coating 3 is 5-10 μm, and thickness of dry film is 2-6 μm；S500
Baking processing may include 10min, 50 DEG C for the first time baking and 20min, 180 DEG C second baking.Specifically, wet paint overspray
The typical but non-limiting thickness of film can be 5 μm, 5.5 μm, 6 μm, 6.5 μm, 7 μm, 7.5 μm, 8 μm, 8.5 μm, 9 μm, 9.5 μ
m,10μm；The typical but non-limiting thickness of dry film can be 2 μm, 3 μm, 4 μm, 5 μm, 6 μm.Specifically, such as spray treatment
It is 7.5 μm that can select wet paint overspray film thickness, and thickness of dry film is 4 μm.
Specifically, in the present embodiment, it can be molten comprising polysilicate modified compound, nano aluminum in hydrophilic and oleophilic coating 3
Glue, Ludox, nano-titanium colloidal sol, fatty alcohol polyoxyethylene ether, nonionic fluorosurfactant and deionized water, each ingredient weight
Amount proportioning is as follows：Polysilicate modified compound is 30% -50%, nanometer Aluminum sol is that 10% -20%, Ludox is
10% -30%, nano-titanium colloidal sol be 1% -5%, fatty alcohol polyoxyethylene ether be 0.5% -2%, nonionic fluorochemical surface live
Property agent be 0.01% -0.05%, remaining as deionized water.In addition to above-mentioned prepared composition, can also use silicate or colloidal sol or
At least one of organics modifications colloidal sol, nano-oxide dispersion liquid, the phosphate of alkali metal, inhibitor, wetting agent and molten
Agent prepares hydrophilic and oleophilic coating 3.
Specifically, in the present embodiment, the typical but non-limiting weight percent of polysilicate modified compound can be
30%, 35%, 40%, 45%, 50%；Nanometer Aluminum sol typical but non-limiting weight percent can be 10%, 12%,
14%, 16%, 18%, 20%；The typical but non-limiting weight percent of Ludox can be 10%, 15%, 20%,
25%, 30%；The typical but non-limiting weight percent of nano-titanium colloidal sol can be 1%, 2%, 3%, 4%, 5%；Fat
The typical but non-limiting weight percent of alcohol polyoxyethylene ether can be 0.5%, 1%, 1.5%, 2%；The fluorine-containing table of nonionic
Activating agent typical but non-limiting weight percent in face can be 0.01%, 0.02%, 0.03%, 0.04%, 0.05%；It is surplus
Remaining is deionized water.Specifically, can for example choose, polysilicate modified compound is 40%, nanometer Aluminum sol is 15%, silicon
Colloidal sol is 20%, nano-titanium colloidal sol is 3%, fatty alcohol polyoxyethylene ether 1.25%, nonionic fluorosurfactant are
0.03%, deionized water 20.72%.
In addition to above-mentioned coating is arranged, it can be applied in the front of oil cleaner screen 1 or back side spraying hydrophilic and oleophilic according to actual demand
3 or hydrophilic and oleophobic coating 2 of layer.
In the present embodiment, nano-disinfection material can be added in hydrophilic and oleophobic coating 2；And/or hydrophilic and oleophilic coating 3
In be added with nano-disinfection material.Nano-disinfection material can inhibit or kill the bacterium in greasy dirt, be grown with reducing in greasy dirt
Harmful effect of the bacterium to environment and user health health；Specifically, nano-disinfection material can select nano silver or Nanometer Copper,
Wherein, the Ingredients Weight proportioning of nano-disinfection material in the coating can be 0.05-0.1%, and nano silver or Nanometer Copper are to large intestine
The antibiotic property of bacillus and staphylococcus aureus can reach 99.9%.
In the present embodiment, Heat Conduction Material can be added in hydrophilic and oleophobic coating 2；And/or add in hydrophilic and oleophilic coating 3
Added with Heat Conduction Material.Resistant material can also be added in hydrophilic and oleophobic coating 2；And/or it is added in hydrophilic and oleophilic coating 3
There is resistant material.Heat Conduction Material in coating can improve the thermal conductivity of coating, to improve the steam in oil smoke air-flow and
Condensation efficiency of the smoke particle on oil cleaner screen 1 improves the clean-up effect of oil cleaner screen 1 to capture more stain sediments；Corrosion resistant
Corrosion material can then improve the corrosion resistance of coating, and the corresponding corrosion resistance for improving oil cleaner screen 1, extend oil-filtering apparatus uses the longevity
Life.Specifically, Heat Conduction Material and resistant material can select graphene powder, wherein graphene powder is in the coating
Ingredients Weight proportioning is 0.01-0.1%
In the present embodiment, as shown in Figure 1-Figure 3, oil cleaner screen 1 can be taper, and the necking end of oil cleaner screen 1 is equipped with oil trap
4, oil trap 4 is equipped with oil guiding hole 41.Here it is a kind of concrete shape of oil cleaner screen 1, the oil cleaner screen 1 of taper is being realized to oil smoke
At machine smoking port block filtering on the basis of, filtration, purification area be much larger than flat oil cleaner screen 1, corresponding clean-up effect compared with
It is good；In addition, the oil droplet 8 at 1 back side of oil cleaner screen is flowed downwardly into along the side wall of oil cleaner screen 1 in oil trap 4, and leaked by oil guiding hole 41
Go out, user can be connected with oil collection box in the necking end bottom of oil cleaner screen 1, and greasy dirt cleanser oil guiding hole 41 is flowed into oil collection box and temporarily stored up
It deposits；After a period of use, oil collection box is removed from oil cleaner screen 1, by the cleaning oil pollution in it is clean after be reinstalled in filter
In oil network 1.Specifically, the angle between the side and horizontal plane of oil cleaner screen 1 can be more than 25 °.
Specifically, in the present embodiment, as shown in Fig. 2, blocked hole 42 can be equipped on oil trap 4, oil collection box is equipped with
Clamping joint, oil collection box are connected in by clamping joint on blocked hole 42.Here it is the one of oil collection box and 1 detachable connection of oil cleaner screen
The clamping joint bottom-up insertion of alignment blocked hole 42 when installation, in it, is then circumferentially rotated oil collection box by kind of concrete form,
Clamping joint is clamped on the edge of blocked hole 42；It is similar when needing to remove oil collection box, oil collection box is rotated backward until clamping joint
It is aligned with blocked hole 42, is downwardly drawn out clamping joint.
In the present embodiment, oil guide groove 5, oil guide groove 5 can also be equipped with along straight line where its busbar in the medial surface of oil cleaner screen 1
Bottom be connected to oil trap 4.1 back side of oil cleaner screen aggregation large volume oil droplet 8 can roll into tour guide slot in, and along tour guide slot to
In lower inflow oil trap 4, flowed into oil collection box through oil guiding hole 41 after；The setting of tour guide's slot, which can play greasy dirt, collects work
With reduction oil droplet 8 is the occurrence of 1 surface scrolls of oil cleaner screen result in blockage to oil filter hole 11.
In the present embodiment, as depicted in figs. 1 and 2, oil guide groove 5 can be a plurality of, week of a plurality of oil guide groove 5 along oil cleaner screen 1
To dispersed distribution.Specifically, oil guide groove 5 can be 4-8 items, the oil droplet 8 of 1 back side different parts of oil cleaner screen collect leading
Stream, is further reduced blocking of the oil droplet 8 to oil filter hole 11 on oil cleaner screen 1.
In the present embodiment, as depicted in figs. 1 and 2, oil cleaner screen 1 may include frame 12 and dictyosome 13, the flaring of dictyosome 13
End matches connection with frame 12, and frame 12 is equipped with connecting pin 6.The setting of frame 12 can improve the intensity of dictyosome 13, subtract
The occurrence of few 13 stress and deformation of dictyosome；Connecting pin 6 is then used to connect with the shell of kitchen ventilator, corresponding to reduce dictyosome 13 directly
It is connect with shell to destruction caused by dictyosome 13.
Specifically, as shown in figure 5, oil filter hole 11 can be diamond shape, the side length of diamond shape can be 1-2mm, in diamond shape
Acute angle a angles can be 40-60 °.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
To modify to the technical solution recorded in previous embodiment, either which part or all technical features are equal
It replaces；And these modifications or replacements, the model for technical solution of the embodiment of the present invention that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (10)
1. a kind of oil-filtering apparatus, which is characterized in that including oil cleaner screen (1), the oil cleaner screen (1) is equipped with oil filter hole (11), institute
It states oil cleaner screen (1) and is covered with hydrophilic and oleophobic coating (2) in the one side that oil smoke enters.
2. oil-filtering apparatus according to claim 1, which is characterized in that the one side that the oil cleaner screen (1) enters towards oil smoke
On be covered with hydrophilic and oleophilic coating (3).
3. oil-filtering apparatus according to claim 2, which is characterized in that be added with nanometer in the hydrophilic and oleophobic coating (2)
Sterilization material；
And/or nano-disinfection material is added in the hydrophilic and oleophilic coating (3).
4. oil-filtering apparatus according to claim 2, which is characterized in that be added with heat conduction in the hydrophilic and oleophobic coating (2)
Material；
And/or Heat Conduction Material is added in the hydrophilic and oleophilic coating (3).
5. oil-filtering apparatus according to claim 2, which is characterized in that be added with corrosion resistant in the hydrophilic and oleophobic coating (2)
Corrosion material；
And/or resistant material is added in the hydrophilic and oleophilic coating (3).
6. oil-filtering apparatus according to any one of claims 1-5, which is characterized in that in the hydrophilic and oleophobic coating (2)
Including nano silicon dioxide, alundum (Al2O3), zirconium oxide, lithium aluminium silicate, titanium dioxide, silazane, surfactant and go from
Sub- water, each Ingredients Weight proportioning are as follows：Nano silicon dioxide is that 20% -45%, alundum (Al2O3) is 5% -12%, zirconium oxide
For 1% -5%, lithium aluminium silicate be 1% -12%, titanium dioxide be 1% -16%, silazane it is 8% -22%, surface-active
Agent is 0.1% -2%, remaining as deionized water.
7. according to the oil-filtering apparatus described in any one of claim 2-5, which is characterized in that in the hydrophilic and oleophilic coating (3)
Including polysilicate modified compound, nanometer Aluminum sol, Ludox, nano-titanium colloidal sol, fatty alcohol polyoxyethylene ether, nonionic contain
Fluorinated surfactant and deionized water, each Ingredients Weight proportioning are as follows：Polysilicate modified compound is 30% -50%, nanometer
Aluminum sol be 10% -20%, Ludox be 10% -30%, nano-titanium colloidal sol is that 1% -5%, fatty alcohol polyoxyethylene ether is
0.5% -2%, nonionic fluorosurfactant is 0.01% -0.05%, remaining as deionized water.
8. oil-filtering apparatus according to any one of claims 1-5, which is characterized in that the oil cleaner screen (1) is taper,
The necking end of the oil cleaner screen (1) is equipped with oil trap (4), and the oil trap (4) is equipped with oil guiding hole (41).
9. a kind of manufacturing method, which is characterized in that be used for the parent in the oil-filtering apparatus described in any one of claim 1-8
Water oleophobic coating (2) is sprayed on oil cleaner screen (1) in the one side that oil smoke enters, and concrete operations include the following steps：
S100 carries out ungrease treatment to the surface of oil cleaner screen (1)；
S200 starts the cleaning processing the surface of oil cleaner screen (1)；
S300 carries out drying and processing to the surface of oil cleaner screen (1)；
Surface spraying hydrophilic and oleophobic coating of the S400 to oil cleaner screen (1), wherein construction temperature is 10-30 DEG C, relative humidity is
45%-75%, spray pressure be 0.6-0.8MPa, spray distance 15-25cm；
The oil cleaner screen (1) for being coated with hydrophilic and oleophobic coating (2) is carried out baking processing by S500.
10. a kind of kitchen ventilator, which is characterized in that including the oil-filtering apparatus described in any one of shell and claim 1-8, institute
It states shell and is equipped with interconnected smoking port and smoke outlet, the oil-filtering apparatus installation on the housing, and covers at institute
It states at smoking port.
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| CN201810991913.2A CN108758754A (en) | 2018-08-28 | 2018-08-28 | Oil-filtering apparatus, manufacturing method and kitchen ventilator |
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