CN111981536A - Oil fume purification device for kitchen - Google Patents
Oil fume purification device for kitchen Download PDFInfo
- Publication number
- CN111981536A CN111981536A CN202010816767.7A CN202010816767A CN111981536A CN 111981536 A CN111981536 A CN 111981536A CN 202010816767 A CN202010816767 A CN 202010816767A CN 111981536 A CN111981536 A CN 111981536A
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- Prior art keywords
- oil
- purification
- bin
- purification bin
- oil collecting
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- 238000000746 purification Methods 0.000 title claims abstract description 100
- 239000003517 fume Substances 0.000 title claims abstract description 28
- 239000000779 smoke Substances 0.000 claims abstract description 35
- 230000001699 photocatalysis Effects 0.000 claims description 19
- 238000005485 electric heating Methods 0.000 claims description 10
- 238000010411 cooking Methods 0.000 claims description 8
- 238000007146 photocatalysis Methods 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000005192 partition Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 13
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 12
- 239000003546 flue gas Substances 0.000 abstract description 12
- 238000007664 blowing Methods 0.000 abstract description 2
- 230000003749 cleanliness Effects 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 238000004064 recycling Methods 0.000 abstract 1
- 239000006233 lamp black Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000005686 electrostatic field Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003421 catalytic decomposition reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Images
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
- F24C15/2021—Arrangement or mounting of control or safety systems
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
- A61L9/18—Radiation
- A61L9/20—Ultraviolet radiation
- A61L9/205—Ultraviolet radiation using a photocatalyst or photosensitiser
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/007—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by irradiation
-
- 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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
- H05B3/06—Heater elements structurally combined with coupling elements or holders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/804—UV light
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Epidemiology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Toxicology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Ventilation (AREA)
Abstract
The invention discloses an oil fume purification device for a kitchen, which comprises a secondary purification bin: the entrance point of second grade purification storehouse advances union coupling with one-level purification storehouse and oil smoke respectively through the assembly pole that runs through, and the exit end is connected with the flue gas exit tube through the assembly pole that runs through, the top of second grade purification storehouse is provided with high voltage generator, and is connected with the discharge needle that extends to in the second grade purification storehouse on the high voltage generator, the both sides that just are located the discharge needle in the second grade purification storehouse all are provided with an oil collecting plate, the exit end of air exhauster is provided with a recoil subassembly, and the exit end of recoil subassembly extends to in the second grade purification storehouse to be located the top of oil collecting plate. According to the oil fume purification device, the purified flue gas can be flushed and guided into the secondary purification bin through the arranged backflushing component, the reverse blowing effect on residual oil stains on the oil collecting plate is achieved, the cleanliness of the oil fume purification device is improved, and the effect of recycling the purified flue gas is achieved.
Description
Technical Field
The invention relates to the technical field of oil fume purification, in particular to an oil fume purification device for a kitchen.
Background
The oil fume purifier is a processing device for oil fume and waste gas, and is mainly used for purification and treatment of oil fume discharged from low altitude in kitchens, and is used in places such as hotels, restaurants, wineries, restaurants, schools, offices, factories and the like, particularly for cooking in kitchens, the oil fume purification device is required to be used for purification treatment of the generated oil fume so as to avoid the phenomenon of atmosphere pollution caused by direct emission of the oil fume to the external environment.
The existing oil fume purification device mostly adopts a built-in purification structure, so that the oil fume efficient purification effect is realized, oil stains are easy to remain on the purification structure due to the built-in installation structure of the purification structure, when the oil stains are gathered to a certain degree, the purification effect of the oil fume purification device is reduced, if the purification structure is cleaned, the oil fume purification device needs to be disassembled for manual cleaning, so that the burden of users is increased, and the automatic cleaning effect cannot be realized.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides an oil fume purification device for a kitchen, which can automatically clean an oil fume purification structure and realize the reutilization of purified flue gas.
In order to achieve the purpose, the invention adopts the following technical scheme: a fume purification device for a kitchen comprises a secondary purification bin:
the inlet end of the second-stage purification bin is respectively connected with the first-stage purification bin and the oil smoke inlet pipe through a penetrating assembly rod, the outlet end of the second-stage purification bin is connected with a smoke outlet pipe through a penetrating assembly rod, and an exhaust fan is arranged on the smoke outlet pipe;
the top of the secondary purification bin is provided with a high-voltage generator, the high-voltage generator is connected with a discharge needle extending into the secondary purification bin, and oil collecting plates are arranged on two sides of the discharge needle in the secondary purification bin;
the outlet end of the exhaust fan is provided with a backflushing assembly, and the outlet end of the backflushing assembly extends into the secondary purification bin and is positioned above the oil collecting plate.
As a further description of the above technical solution:
the recoil component comprises an electric control three-way valve arranged on the exhaust fan, an outlet at one side of the electric control three-way valve is communicated with a backflow pipe, and an air outlet end of the backflow pipe is provided with an air nozzle which extends into the secondary purification bin and is positioned above the oil collecting plate and inclines.
As a further description of the above technical solution:
a booster fan is arranged on one end of the return pipe close to the electric control three-way valve;
and an electric heating wire is arranged on the inner wall of the return pipe close to the air nozzle.
As a further description of the above technical solution:
the end part of the assembling rod is provided with a thread groove, and a nut is screwed on the thread groove.
As a further description of the above technical solution:
a filter screen is arranged on the inner wall of the primary purification bin;
the top of one-level purification storehouse is provided with the temperature controller, and is connected with the electric heating piece that extends to in the filter screen on the temperature controller.
As a further description of the above technical solution:
the device also comprises a photocatalytic component;
the photocatalysis component comprises a photocatalysis chamber arranged on the inner wall of the primary purification bin, ultraviolet lamps are arranged on the inner walls of the vertical ends of the two sides of the photocatalysis chamber, and partition plates are arranged at the horizontal ends of the two sides of the photocatalysis chamber.
As a further description of the above technical solution:
the bottom of one-level purification storehouse inlays and is equipped with first collection oil box.
As a further description of the above technical solution:
and a second oil collecting box is embedded at the bottom of the secondary purification bin.
The invention provides an oil fume purification device for a kitchen. The method has the following beneficial effects:
this oil smoke purifier can wash the flue gas after purifying leading-in to the second grade purification storehouse through the recoil subassembly that sets up, plays the effect of reverse blowing to remaining greasy dirt on the oil collecting plate, need not manual clearance and can realize the automatic clearance effect to the oil collecting plate to improve oil smoke purifier's clean and tidy degree, also realized purifying back flue gas reuse's effect.
Drawings
Fig. 1 is a schematic view of the whole internal structure of a lampblack purification device for a kitchen, which is provided by the invention;
FIG. 2 is a schematic view of the internal structure of the primary purification chamber of the present invention;
FIG. 3 is a schematic side view of a photocatalytic assembly according to the present invention;
FIG. 4 is a schematic diagram of the internal side view of the secondary purification chamber of the present invention;
FIG. 5 is a schematic view of the construction of the mounting rod of the present invention;
FIG. 6 is a schematic view of the recoil assembly of the present invention.
Illustration of the drawings:
1. oil smoke inlet pipe; 2. a primary purification bin; 21. a temperature controller; 22. an electrical heating sheet; 23. filtering with a screen; 24. a first oil collecting box; 25. a photocatalytic component; 251. a photocatalytic chamber; 252. a partition plate; 253. an ultraviolet lamp; 3. a secondary purification bin; 31. a high voltage generator; 32. an oil collecting plate; 33. a discharge needle; 34. a second oil collecting box; 4. a flue gas outlet pipe; 5. an exhaust fan; 6. assembling a rod; 61. a screw groove; 62. a nut; 7. a recoil assembly; 71. an electrically controlled three-way valve; 72. a booster fan; 73. an electric heating wire; 74. an air nozzle; 75. a return pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
As shown in fig. 1 and 4, a lampblack purification device for a kitchen comprises a secondary purification bin 3:
the inlet end of the second-stage purification bin 3 is respectively connected with the first-stage purification bin 2 and the oil smoke inlet pipe 1 through a penetrating assembly rod 6, the outlet end of the second-stage purification bin is connected with a smoke outlet pipe 4 through a penetrating assembly rod 6, and an exhaust fan 5 is arranged on the smoke outlet pipe 4;
a high-voltage generator 31 is arranged at the top of the secondary purification bin 3, a discharge needle 33 extending into the secondary purification bin 3 is connected to the high-voltage generator 31, and oil collecting plates 32 are arranged on two sides of the discharge needle 33 in the secondary purification bin 3;
the outlet end of the exhaust fan 5 is provided with a backflushing component 7, and the outlet end of the backflushing component 7 extends into the secondary purification bin 3 and is positioned above the oil collecting plate 32.
In the embodiment, the oil smoke inlet pipe 1, the first-stage purification bin 2, the second-stage purification bin 3 and the smoke outlet pipe 4 are connected and fixed one by one through the assembling rod 6, so that the split-type assembling effect of the oil smoke purification device is realized, the oil smoke purification device is convenient to disassemble and assemble, then the oil smoke inlet pipe 1 is connected to an oil smoke discharge pipeline of a kitchen, at the moment, oil smoke firstly enters the first-stage purification bin 2 and enters the second-stage purification bin 3, the high-voltage generator 31 introduces high voltage into the discharge needle 33 to discharge the high voltage, a high-voltage electrostatic field is formed in the second-stage purification bin 3, when the oil smoke enters the high-voltage electrostatic field, the oil smoke is ionized under the action of the high-voltage electric field, so that oil mist is charged, most of the oil smoke is degraded and carbonized, and a small part of the oil particles move and gather on an oil collecting plate 32, thereby play electrostatic purification's effect to the oil smoke, the flue gas after the purification enters into flue gas exit tube 4 and outwards discharges, and on the other hand exhaust purification flue gas can flow back again in second grade purification storehouse 3 through recoil subassembly 7 to carry out the recoil effect to remaining greasy dirt on oil collecting plate 32, thereby realize oil collecting plate 32's automatic clearance effect.
As shown in fig. 1 and 6, the backflushing assembly 7 includes an electrically controlled three-way valve 71 disposed on the exhaust fan 5, an outlet on one side of the electrically controlled three-way valve 71 is communicated with a return pipe 75, and an air outlet end of the return pipe 75 is provided with an air nozzle 74 extending into the secondary purification chamber 3 and inclined above the oil collecting plate 32, when the electrically controlled three-way valve 71 is communicated with the outlet on one side of the return pipe 75, the purified flue gas enters the return pipe 75 and is sprayed out from the air nozzle 74, and the oil stain remaining on the surface of the oil collecting plate 32 is cleaned, otherwise, the purified flue gas is discharged outwards.
As shown in fig. 6, a booster fan 72 is arranged at one end of the return pipe 75 close to the electrically controlled three-way valve 71 for boosting the smoke in the return pipe 75, so that the smoke in the return pipe 75 is in a high-pressure state, an electric heating wire 73 is arranged on the return pipe 75 and close to the inner wall of the air nozzle 74, the electric heating wire 73 is connected with the high-pressure generator 31, so that the electric heating wire 73 can generate heat, the smoke in the return pipe 75 is heated, the smoke is in a high-temperature high-pressure state, and the back-flushing effect of residual oil stains on the oil collecting plate 32 by the smoke is improved.
As shown in fig. 5, the end of the assembling rod 6 is provided with a screw groove 61, and the screw groove 61 is screwed with a screw cap 62, and the screw cap 62 screwed with the screw thread can fasten the connection between the end of the assembling rod 6 and the lampblack inlet pipe 1 or the lampblack outlet pipe 4, thereby improving the overall stability of the lampblack purification device.
As shown in fig. 2, the inner wall of the primary purification bin 2 is provided with a filter screen 23 for filtering the oil smoke, the top of the primary purification bin 2 is provided with a temperature controller 21, the temperature controller 21 is connected with an electric heating sheet 22 extending into the filter screen 23, the temperature controller 21 controls the electric heating sheet 22 to work and generate heat, and the particle oil on the filter screen 23 is heated, so that the particle oil on the filter screen 23 is melted by heat, and the particle oil drops under the action of gravity.
As shown in fig. 3, the oil smoke purifier further comprises a photocatalytic assembly 25, the photocatalytic assembly 25 comprises a photocatalytic chamber 251 arranged on the inner wall of the primary purification bin 2, ultraviolet lamps 253 are arranged on the inner walls of the vertical ends of the two sides of the photocatalytic chamber 251, partition plates 252 are arranged at the horizontal ends of the two sides of the photocatalytic chamber 251, the ultraviolet lamps 253 are started to generate ultraviolet rays, and the ultraviolet rays perform ultraviolet catalytic decomposition on oil mist in oil smoke entering the photocatalytic chamber 251, so that the oil smoke separation efficiency is improved, and the oil smoke can be disinfected by ultraviolet rays.
As shown in fig. 2, a first oil collecting box 24 is embedded in the bottom of the primary purification bin 2, and a detachable embedded installation structure is adopted, so that oil stains generated in the primary purification bin 2 can be collected, and the collected oil stains can be poured conveniently.
As shown in fig. 4, a second oil collecting box 34 is embedded in the bottom of the secondary purification chamber 3, and a detachable embedded installation structure is adopted, so that oil stains generated in the secondary purification chamber 3 can be collected, and the collected oil stains can be poured conveniently.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The utility model provides an oil smoke purifier for kitchen, includes second grade purifying storehouse (3), its characterized in that:
the inlet end of the secondary purification bin (3) is respectively connected with the primary purification bin (2) and the oil smoke inlet pipe (1) through a penetrating assembly rod (6), the outlet end of the secondary purification bin is connected with the smoke outlet pipe (4) through the penetrating assembly rod (6), and an exhaust fan (5) is arranged on the smoke outlet pipe (4);
a high-voltage generator (31) is arranged at the top of the secondary purification bin (3), a discharge needle (33) extending into the secondary purification bin (3) is connected to the high-voltage generator (31), and oil collecting plates (32) are arranged in the secondary purification bin (3) and positioned on two sides of the discharge needle (33);
the outlet end of the exhaust fan (5) is provided with a backflushing component (7), and the outlet end of the backflushing component (7) extends into the secondary purification bin (3) and is positioned above the oil collecting plate (32).
2. A cooking fume purification apparatus for kitchen according to claim 1, characterized in that: the backflushing component (7) comprises an electric control three-way valve (71) arranged on the exhaust fan (5), an outlet on one side of the electric control three-way valve (71) is communicated with a return pipe (75), and an air outlet end of the return pipe (75) is provided with an air nozzle (74) which extends into the secondary purification bin (3) and is positioned above the oil collecting plate (32) in an inclined mode.
3. A cooking fume purification apparatus for kitchen according to claim 2, characterized in that: a booster fan (72) is arranged on one end of the return pipe (75) close to the electric control three-way valve (71);
an electric heating wire (73) is arranged on the return pipe (75) and close to the inner wall of the air nozzle (74).
4. A cooking fume purification apparatus for kitchen according to claim 1, characterized in that: the end part of the assembling rod (6) is provided with a thread groove (61), and a nut (62) is screwed on the thread groove (61).
5. A cooking fume purification apparatus for kitchen according to claim 1, characterized in that: a filter screen (23) is arranged on the inner wall of the primary purification bin (2);
the top of one-level purification storehouse (2) is provided with temperature controller (21), and is connected with electric heating plate (22) that extend to in filter screen (23) on temperature controller (21).
6. A cooking fume purification apparatus for kitchen according to claim 1, characterized in that: further comprising a photocatalytic assembly (25);
the photocatalysis component (25) comprises a photocatalysis chamber (251) arranged on the inner wall of the primary purification bin (2), ultraviolet lamps (253) are arranged on the inner walls of the vertical ends of two sides of the photocatalysis chamber (251), and partition plates (252) are arranged at the horizontal ends of two sides of the photocatalysis chamber (251).
7. A cooking fume purification apparatus for kitchen according to claim 1, characterized in that: the bottom of the primary purification bin (2) is embedded with a first oil collecting box (24).
8. A cooking fume purification apparatus for kitchen according to claim 1, characterized in that: and a second oil collecting box (34) is embedded at the bottom of the secondary purification bin (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010816767.7A CN111981536A (en) | 2020-08-14 | 2020-08-14 | Oil fume purification device for kitchen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010816767.7A CN111981536A (en) | 2020-08-14 | 2020-08-14 | Oil fume purification device for kitchen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111981536A true CN111981536A (en) | 2020-11-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010816767.7A Pending CN111981536A (en) | 2020-08-14 | 2020-08-14 | Oil fume purification device for kitchen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111981536A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115727381A (en) * | 2022-12-06 | 2023-03-03 | 叶永生 | A filter type range hood and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2352366A1 (en) * | 2001-01-16 | 2002-07-16 | Nabco Ltd. | A hollow fiber membrane dehumidification device |
| CN108870492A (en) * | 2018-07-18 | 2018-11-23 | 江苏中科睿赛污染控制工程有限公司 | A kind of center fume purifier of fume |
| CN110657479A (en) * | 2019-11-15 | 2020-01-07 | 廖祖松 | Fume odor remover for fume duct |
| CN111189087A (en) * | 2020-01-10 | 2020-05-22 | 蒋凤歌 | Can clear up smoke ventilator of filter screen automatically |
-
2020
- 2020-08-14 CN CN202010816767.7A patent/CN111981536A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2352366A1 (en) * | 2001-01-16 | 2002-07-16 | Nabco Ltd. | A hollow fiber membrane dehumidification device |
| CN108870492A (en) * | 2018-07-18 | 2018-11-23 | 江苏中科睿赛污染控制工程有限公司 | A kind of center fume purifier of fume |
| CN110657479A (en) * | 2019-11-15 | 2020-01-07 | 廖祖松 | Fume odor remover for fume duct |
| CN111189087A (en) * | 2020-01-10 | 2020-05-22 | 蒋凤歌 | Can clear up smoke ventilator of filter screen automatically |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115727381A (en) * | 2022-12-06 | 2023-03-03 | 叶永生 | A filter type range hood and method |
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Application publication date: 20201124 |
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