CN108344010B - Chinese meal gas stove oil fume purification device and exhaust kitchen using same - Google Patents
Chinese meal gas stove oil fume purification device and exhaust kitchen using same Download PDFInfo
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- CN108344010B CN108344010B CN201810130749.6A CN201810130749A CN108344010B CN 108344010 B CN108344010 B CN 108344010B CN 201810130749 A CN201810130749 A CN 201810130749A CN 108344010 B CN108344010 B CN 108344010B
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- 238000000746 purification Methods 0.000 title claims abstract description 28
- 235000012054 meals Nutrition 0.000 title claims description 5
- 239000007789 gas Substances 0.000 title description 16
- 239000003517 fume Substances 0.000 title description 8
- 239000010742 number 1 fuel oil Substances 0.000 title description 2
- 239000000835 fiber Substances 0.000 claims abstract description 41
- 239000000463 material Substances 0.000 claims abstract description 36
- 229920006221 acetate fiber Polymers 0.000 claims abstract description 16
- 235000013305 food Nutrition 0.000 claims abstract description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229920000747 poly(lactic acid) Polymers 0.000 claims abstract description 13
- 239000004626 polylactic acid Substances 0.000 claims abstract description 13
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 12
- 239000000919 ceramic Substances 0.000 claims abstract description 11
- 239000000779 smoke Substances 0.000 claims description 42
- 238000001914 filtration Methods 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 13
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- 238000003672 processing method Methods 0.000 claims description 2
- 238000005352 clarification Methods 0.000 claims 1
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- 239000006233 lamp black Substances 0.000 abstract description 12
- 239000013589 supplement Substances 0.000 abstract description 6
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- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical group [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 3
- 229920002472 Starch Polymers 0.000 description 2
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- 239000010806 kitchen waste Substances 0.000 description 2
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- RZJRJXONCZWCBN-UHFFFAOYSA-N octadecane Chemical compound CCCCCCCCCCCCCCCCCC RZJRJXONCZWCBN-UHFFFAOYSA-N 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
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- 230000003068 static effect Effects 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- RSJKGSCJYJTIGS-UHFFFAOYSA-N undecane Chemical compound CCCCCCCCCCC RSJKGSCJYJTIGS-UHFFFAOYSA-N 0.000 description 2
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- 206010028980 Neoplasm Diseases 0.000 description 1
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- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 1
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- 231100001243 air pollutant Toxicity 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
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- 238000007731 hot pressing Methods 0.000 description 1
- 238000003905 indoor air pollution Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
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- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
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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
- F24C15/2035—Arrangement or mounting of filters
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ventilation (AREA)
Abstract
The invention discloses a Chinese food gas stove lampblack purification device and an exhaust kitchen using the same, wherein the exhaust kitchen comprises a kitchen side wall, a kitchen ceiling, an air exhaust fan, an external exhaust device, a Chinese food gas stove large pot hearth and a Chinese food gas stove lampblack purification device, non-woven fabrics made of mixed acetate fibers and polylactic acid fibers are arranged outside a filter core of the Chinese food gas stove lampblack purification device, the filter core is wrapped in the non-woven fabrics, and the filter core is diatomite-based porous filter ceramic leftover materials. The exhaust kitchen of the invention improves and reduces the pollution to the atmosphere, increases the air supplement effect of the kitchen, fully utilizes leftover materials and greatly saves the economic cost.
Description
Technical Field
The invention relates to an oil fume purification device of a Chinese food gas stove and an exhaust kitchen using the same.
Background
The kitchen is a basic component of a house and is the primary site where people perform cooking activities. The kitchen becomes a 'disaster area' of the house due to the combustion of various civil fuels, cooking oil smoke, domestic garbage and the like, and the kitchen also becomes one of important sources of indoor air pollution of the house. Kitchen waste gas is the most main pollutant gas in the kitchen, and comprises two types: the waste gas released in the combustion process of fuel and the substances produced by a series of physical and chemical changes of food and grease at high temperature. The two substances are mixed in space and rapidly diffused, which is harmful to the physical and mental health of people.
The main components in cooking fumes are alkanes and alkenes, followed by organic acids, aldehydes and polycyclic aromatics. Although aliphatic hydrocarbons are not carcinogenic substances, undecane, dodecane, octadecane and the like are important carcinogenic substances; phenols and polycycloalkanes also have cancer-promoting effects; aldehydes are denatured.
In general residences, ventilation of a kitchen only considers exhaust, and air supplement is freely supplemented through a door and a window to balance indoor and outdoor pressure difference. Along with the deepening of people's understanding of indoor air quality, kitchen ventilation and oil smoke control have also gradually attracted people's attention.
In the prior art, two approaches are currently used. One is natural ventilation, that is, a ventilation method in which ventilation is achieved by utilizing hot pressing caused by a temperature difference between the inside and the outside of the room or wind pressure caused by wind force. The ventilation volume is very large, no electric energy is consumed, no noise is generated, and the ventilation device is the most economical ventilation mode. However, the method is easy to affect the air exhaust by the atmospheric factors such as wind direction, wind speed and the like, has extremely unstable air exhaust capability, is easy to cause oil smoke to run down, cannot meet the requirements of organizing the emission of oil smoke and harmful gas, and is generally widely applied to rural low-rise buildings.
The other is mechanical ventilation. Mechanical ventilation is to fully utilize thermal plume formed in the cooking process, combine negative pressure formed by a fan on the upper part of a stove, discharge kitchen waste gas outdoors by means of ventilation power (a ventilator or a range hood) and control air pollutants to diffuse to other areas of a kitchen. Mechanical air exhaust is divided into two types, namely a direct household exhaust mode, which is simple and has large air exhaust amount. But has several disadvantages: firstly, the smoke exhaust pipe and the windproof cap which are connected by a user can damage the beauty of the outer vertical surface of the building; secondly, the oil smoke discharged from the lower kitchen can enter the rooms of the upper residents to cause pollution; furthermore, when high speed windward is encountered, unsmooth exhaust or backflow phenomenon can occur. The second is a centralized discharge mode. When the kitchen exhaust system is turned on, the kitchen exhaust must be compensated. If not enough new trend compensates the kitchen volume of airing exhaust, the pressure in the kitchen can be less than outdoor pressure, causes the interior fuel burning of kitchen insufficient and makes smoke ventilator efficiency reduce, can not discharge the harmful substance that produces in the cooking process in time. In commercial kitchens, mechanical air supplement is generally adopted, and the technology is mature. In the kitchen of the residences, the form of wind supplement is rarely considered, and the supplement of fresh wind mainly depends on the penetration of doors and windows. However, the air tightness and the heat insulation performance of modern building walls are enhanced, and the requirements cannot be met only by means of door and window air supplement, so that high attention is paid to oil smoke harm and ventilation of residential kitchens. Researches show that the kitchen range position, the ventilation airflow organization form and the building design form in the kitchen have great influence on the kitchen ventilation and the smoke removal efficiency of the smoke exhaust ventilator.
To this end, fig. 1 shows a microscopic photograph of SEM scanning after sintering of diatomite, which has been a purification material in the exhaust fume purification device proposed previously. Soluble starch is added into the purifying material in the sintering process to serve as a pore-forming agent, and the generated macropores can influence the porosity of the material by utilizing micron-sized macropores left in the diatomite-based porous filtering ceramic after the purifying material is decomposed in the sintering process, so that the adsorption effect on oil smoke is improved. However, the sintered porous ceramic generates more leftover materials, and the filtration and purification characteristics of the leftover materials are the same as those of the formed porous ceramic blank, so that how to improve the utilization rate of the leftover materials is a key point of the invention.
Disclosure of Invention
The invention provides an oil fume purification device of a Chinese food gas stove and an exhaust kitchen using the same, aiming at the defects of the prior art by innovatively improving the overall structure of the kitchen according to research for years.
In order to realize the technical purpose, the invention adopts the technical scheme that: an exhaust kitchen 1 comprises a kitchen side wall 2, a kitchen ceiling 3, an air exhaust fan 4, an external exhaust device 5 and a Chinese food gas stove cauldron hearth 6, wherein the exhaust device 5 is arranged outside the kitchen side wall, and the Chinese food gas stove cauldron hearth is arranged inside the kitchen; a smoke exhaust ventilator (not shown in the figure, but can be understood by those skilled in the art) is arranged above the cooking bench of the cauldron of the Chinese meal gas stove, an exhaust channel 7 is arranged on the side wall of the kitchen close to the external exhaust device, an exhaust fan 8 is arranged on the exhaust channel 7, and a smoke exhaust pipeline of the smoke exhaust ventilator is connected with the exhaust channel 7 (not shown in the figure, but can be understood by those skilled in the art); the external exhaust device 5 comprises an exhaust device shell 9, a primary purification device 10, a first lampblack gathering cavity 11, a first communicating pipe 12, a second lampblack gathering cavity 13, a second communicating pipe 14, a secondary filter device 15, a third communicating pipe 16, a tertiary filter device 17, a fourth communicating pipe 18, an auxiliary exhaust fan 19, a fifth communicating pipe 20 and a sixth communicating pipe 21, wherein the primary purification device 10 is a cuboid shell and comprises a bottom plate 22, a left side plate 23, a right side plate 24, a top plate 25, a front side plate 26, a rear side plate 27 and a plurality of filter cores 28;
furthermore, the two sides of the front side plate 26 and the rear side are provided with ribs 29, and the ribs 29 are just clamped and fixed in the exhaust channel 7; through holes 30 are uniformly arranged on the bottom plate 22 and the top plate 25;
further, the filter element 28 has a narrow portion 31 and a wide portion 32, a trapezoidal groove 33 is formed between the narrow portion 31 and the wide portion 32, and the narrow portion between adjacent filter elements is aligned with the wide portion of another adjacent filter element in the housing of the primary purification apparatus along the length direction.
Furthermore, the outside of the filter element is a non-woven fabric made of acetate fibers and polylactic acid fibers in a mixed mode, the filter element is wrapped in the non-woven fabric, and the filter element is made of diatomite-based porous filter ceramic leftover materials.
Further, the processing method of the non-woven fabric made by mixing the acetate fiber and the polylactic acid fiber comprises the following steps: before fibers are opened, diluted oil solution mist is uniformly sprayed into a fiber pile in a dotted manner, the fiber pile is stacked for about 24 hours to enable the fibers to be uniformly oiled, then, after the fibers are preliminarily opened by adopting a manual pulling method, acetate fibers are opened for 1 time by adopting a small wool machine, polylactic acid fibers are opened for 2 times, then, the fibers are mixed, and then, the two mixed fibers are further opened and mixed; then, a small carding machine is used for primarily carding and forming a net on the loosened and mixed fiber raw materials, a double-curtain clamping type lapping machine is used for lapping, and finally, one-step pre-needling and two-step main needling are adopted to prepare the acetate fiber non-woven material.
Further, the external exhaust device 5 is installed outside the kitchen side wall and abuts against the kitchen side wall, the first lampblack collection chamber 11 is installed on the exhaust passage 7, the primary purification device 10 is installed between the first lampblack collection chamber 11 and the exhaust passage 7 (materials in the primary purification device can adsorb lampblack and harmful substances, other materials are known in the art except the materials specifically mentioned in the invention), the first lampblack collection chamber 11 and the second lampblack collection chamber 13 are communicated through the first communicating pipe 12, the second lampblack collection chamber 13 is internally provided with a secondary filtering device 15, one side of the secondary filtering device 15 is provided with the second communicating pipe 14, a filter element (the filter element material can adsorb lampblack and harmful substances except the materials specifically mentioned in the invention is arranged in the secondary filtering device 15, other materials are known in the art), the other side of the secondary filtering device 15 is provided with a third communicating pipe 16, the other end of the third communicating pipe 16 is communicated with the tertiary filtering device 17 (the filter element material can adsorb oil smoke and harmful substances, other materials are known in the art except the materials specifically mentioned in the invention), the other side of the tertiary filtering device is communicated with an auxiliary exhaust fan 19 through a fourth communicating pipe 18, the auxiliary exhaust fan is further connected with a fifth communicating pipe 20 and a sixth communicating pipe 21, the other end of the fifth communicating pipe 20 is communicated with the interior of the kitchen, and the other end of the sixth communicating pipe 21 penetrates out of the exhaust device shell 9.
Compared with the prior art, the invention has the beneficial effects that: reduces the pollution to the atmosphere, increases the air supplementing effect of a kitchen, fully utilizes leftover materials and greatly saves the economic cost.
Drawings
Fig. 1 is a microscopic photograph of SEM scanning after sintering of a purification material diatomaceous earth in an exhaust cooking fume purification apparatus in the background art.
FIG. 2 is a block diagram of the exhaust kitchen of the present invention;
FIG. 3 is a block diagram of a primary purification apparatus of the present invention;
FIG. 4 is a cross-sectional view of a primary purification apparatus of the present invention.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the installation methods and technical terms mentioned in the present invention are technical terms that are already clearly known in the technical field, and thus, the explanation thereof is not repeated.
The first embodiment is as follows:
as shown in fig. 2, an exhaust kitchen 1 comprises a kitchen side wall 2, a kitchen ceiling 3, an exhaust fan 4, an external exhaust device 5, and a Chinese food gas stove top 6, wherein the exhaust device 5 is arranged outside the kitchen side wall, and the Chinese food gas stove top is arranged inside the kitchen;
a smoke exhaust ventilator (not shown in the figure, but can be understood by those skilled in the art) is arranged above the cooking bench of the cauldron of the Chinese meal gas stove, an exhaust channel 7 is arranged on the side wall of the kitchen close to the external exhaust device, an exhaust fan 8 is arranged on the exhaust channel 7, and a smoke exhaust pipeline of the smoke exhaust ventilator is connected with the exhaust channel 7 (not shown in the figure, but can be understood by those skilled in the art);
the external exhaust device 5 comprises an exhaust device shell 9, a primary purification device 10, a first oil smoke gathering cavity 11, a first communicating pipe 12, a second oil smoke gathering cavity 13, a second communicating pipe 14, a secondary filtration device 15, a third communicating pipe 16, a tertiary filtration device 17, a fourth communicating pipe 18, an auxiliary exhaust fan 19, a fifth communicating pipe 20 and a sixth communicating pipe 21, wherein the external exhaust device 5 is installed outside the side wall of the kitchen and abutted against the side wall of the kitchen, the first oil smoke gathering cavity 11 is installed on the exhaust passage 7, the primary purification device 10 is installed between the first oil smoke gathering cavity 11 and the exhaust passage 7 (wherein materials in the primary purification device can adsorb oil smoke and harmful substances, except the materials specifically mentioned in the invention, other materials are well known in the art), the first oil smoke gathering cavity 11 and the second oil smoke gathering cavity 13 are communicated through the first communicating pipe 12, a second-stage filtering device 15 is arranged in the second oil smoke gathering cavity 13, a second communicating pipe 14 is arranged at one side of the second-stage filtering device 15, a filter element (the filter element can absorb oil smoke and harmful substances, except the materials specifically mentioned in the invention, other materials are well known in the art) is arranged in the second-stage filtering device 15, a third communicating pipe 16 is arranged at the other side of the second-stage filtering device 15, the other end of the third communicating pipe 16 is communicated with a third-stage filtering device 17 (the filter element can absorb oil smoke and harmful substances, except the materials specifically mentioned in the invention, other materials are well known in the art), the other side of the third-stage filtering device is communicated with an auxiliary exhaust fan 19 through a fourth communicating pipe 18, the auxiliary exhaust fan is further connected with a fifth communicating pipe 20 and a sixth communicating pipe 21, and the other end of the fifth communicating pipe 20 is communicated with the interior of the kitchen, the other end of the sixth communicating pipe 21 passes through the exhaust device housing 9.
Wherein, the primary purifying device 10 is the main fume purifying device of the Chinese food gas cooker. As shown in fig. 3 and 4 (fig. 3, the left side plate and the top plate are removed for convenience of illustration), the primary purification apparatus 10 is a rectangular parallelepiped housing, and includes a bottom plate 22, a left side plate 23, a right side plate 24, a top plate 25, a front side plate 26, a rear side plate 27, and a plurality of filter elements 28;
the two sides of the front side plate 26 and the rear side edge are respectively provided with a rib 29, and the ribs 29 are just clamped and fixed in the exhaust channel 7;
through holes 30 are uniformly arranged on the bottom plate 22 and the top plate 25;
the filter element 28 has a narrow portion 31 and a wide portion 32, a trapezoidal groove 33 is formed between the narrow portion 31 and the wide portion 32, and the narrow portions between adjacent filter elements are aligned with the wide portions of another adjacent filter element in the housing of the primary purification apparatus along the length direction.
The filter core is characterized in that a non-woven fabric made of acetate fibers and polylactic acid fibers in a mixed mode is arranged outside the filter core, the filter core is wrapped in the non-woven fabric, and the filter core is made of diatomite-based porous filter ceramic leftover materials.
During the processing of the acetate fiber and the polylactic acid fiber, the inevitable friction between the fibers and the machine can generate static electricity. The acetate fiber and the polylactic acid fiber have small moisture regain, poor conductivity, strong insulativity and difficult electrostatic charge dissipation. In the subsequent carding process, phenomena such as fiber winding rollers and cylinders can occur, so that the quality of the formed web of the fibers is poor, and the subsequent processing is difficult. The addition of a proper amount of oil can reduce the friction between fibers and increase the moisture content, prevent the fibers from generating static electricity, and meet the requirements of softness, smoothness and good cohesion. Therefore, before the fiber is delivered, the diluted oil agent mist is uniformly sprayed into the fiber pile in a dot shape, and the fiber is uniformly oiled and becomes soft in lubrication after being piled for about 24 hours.
In the invention, the fibers are firstly preliminarily opened by manually pulling, then the acetate fibers are opened for 1 time by a small wool making machine, the polylactic acid fibers are opened for 2 times, then the two fibers are mixed, and finally the two mixed fibers are further opened and mixed, generally about 2-3 times. And (3) carrying out primary carding web formation on the opened and mixed fiber raw materials by using a small carding machine, lapping by using a double-curtain clamping lapping machine, and finally preparing the acetate fiber non-woven material by adopting one-step pre-needling and two-step main needling.
Wherein the non-woven fabric made by mixing the acetate fiber and the polylactic acid fiber is wrapped with the filter core, and the filter core material is diatomite-based porous filter ceramic leftover material. Wherein the preparation of the diatomite-based porous filtering ceramic comprises powder preparation, press molding and high-temperature sintering; the powder preparation comprises a manual grinding part and a mechanical ball milling part, wherein the manual grinding part adopts a mortar to grind large pieces of bayberry until granular diatomite can not be observed by naked eyes, and the mechanical ball milling part adopts a ball milling tank to bring a grinding body to a certain height by centrifugal force generated by rotation of a random device and then fall down to generate heavy impact and grinding effects on materials so as to further refine the diatomite after the manual grinding; the method comprises the following steps of (1) performing ball milling by using zirconium dioxide balls as a grinding body and a ball-powder mass ratio of 3:1 at a rotation speed of 450r/min for 4 hours, and sieving diatomite powder by using a 60-mesh sieve; wherein in the mixing stage, the rotating speed of the ball mill is adjusted to 350r/min, and the ball milling is carried out for 4 hours, so as to achieve the aim of mixing. The pressing molding method comprises the following steps of applying a certain pressure to a mold by using a hydraulic machine to mold powder, wherein a cylindrical mold is used for manufacturing a porous ceramic blank, the pressure is 50-60KN for molding, and unloading is carried out after the pressure is kept for 15 s; the release agent is zinc stearate; the zinc stearate is uniformly mixed in an acetone reagent and smeared on the surface layer of the mould, and after the acetone is volatilized, the zinc stearate is uniformly attached to the mould; the high-temperature sintering process comprises the following steps: the first stage is at 50-300 deg.c and heating rate of 5 deg.c/min; the second stage, at 300-400 deg.C, the heating rate is 2 deg.C/min; the third stage, at 400-1000 deg.c, the temperature raising speed is 5 deg.c/min; and in the fourth stage, the temperature is kept for 3 hours at 1000-1000 ℃. Soluble starch is added as a pore former during sintering.
The working principle of the invention is as follows: the assembly is carried out according to the mode shown in figure 2, the airflow flows according to the direction shown in the figure, and after the exhaust device is started, the oil smoke gas in the kitchen is absorbed and filtered by the adsorption materials in the filtering devices at all stages and then is discharged out of the kitchen. Because the oil smoke air is absorbed and filtered, the pollution to the atmosphere can be further reduced; in addition, because the upper oil smoke is less gathered, the position of the fifth communicating pipe 20 and the air extracting fan 4 is basically in a horizontal line, and the air supplementing effect of the kitchen can be directly increased through the function of the fifth communicating pipe 20. The diatomite-based porous filtering ceramic leftover materials are filled in non-woven fabrics made of acetate fibers and polylactic acid fibers to form a filtering core, the filtering core is installed in the primary purifying equipment in the arrangement mode shown in figure 3, and then the primary purifying equipment is fixed in the exhaust channel 7. The oil smoke enters the filter element for filtering after passing through the through hole at the bottom of the primary purification equipment, and then flows out of the through hole at the top to complete the filtering.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any minor modifications, equivalent replacements and improvements made to the above embodiment according to the technical spirit of the present invention should be included in the protection scope of the technical solution of the present invention.
Claims (4)
1. An exhaust kitchen comprises a kitchen side wall, a kitchen ceiling, an exhaust fan, an external exhaust device and a Chinese food gas stove cauldron hearth, wherein the exhaust device is arranged outside the kitchen side wall, and the Chinese food gas stove cauldron hearth is arranged inside the kitchen; a smoke exhaust ventilator is arranged above a cooking bench of a cauldron of the Chinese meal gas stove, an air exhaust channel is arranged on a side wall of a kitchen close to the external exhaust device, an exhaust fan is arranged on the air exhaust channel, and a smoke exhaust pipeline of the smoke exhaust ventilator is connected with the air exhaust channel; the external exhaust device comprises an exhaust device shell, primary purification equipment, a first oil smoke gathering cavity, a first communicating pipe, a second oil smoke gathering cavity, a second communicating pipe, secondary filtration equipment, a third communicating pipe, tertiary filtration equipment, a fourth communicating pipe, an auxiliary exhaust fan, a fifth communicating pipe and a sixth communicating pipe, and is characterized in that the primary purification equipment is a cuboid shell and comprises a bottom plate, a left side plate, a right side plate, a top plate, a front side plate, a rear side plate and a plurality of filter cores; the two sides of the front side plate and the rear side edge are respectively provided with a convex edge, and the convex edges are just clamped and fixed in the exhaust channel; through holes are uniformly distributed on the bottom plate and the top plate; the filter core has narrow part and wide part, be the dovetail groove between narrow part and the wide part, narrow part between the adjacent filter core is to the wide part of another adjacent filter core arrange in proper order along length direction in one-level clarification plant's the casing, the filter core outside is the non-woven fabrics of acetate fiber and polylactic acid fibre mixture preparation, wrap up in the non-woven fabrics the filter core, the filter core is diatomaceous earth base porous filtration ceramic leftover bits.
2. The exhaust kitchen according to claim 1, wherein the processing method of the non-woven fabric made of the acetate fiber and the polylactic acid fiber comprises: before fibers are opened, diluted oil solution mist is uniformly sprayed into a fiber pile in a dotted manner, the fiber pile is stacked for about 24 hours to enable the fibers to be uniformly oiled, then, after the fibers are preliminarily opened by adopting a manual pulling method, acetate fibers are opened for 1 time by adopting a small wool machine, polylactic acid fibers are opened for 2 times, then, the fibers are mixed, and then, the two mixed fibers are further opened and mixed; then, a small carding machine is used for primarily carding and forming a net on the loosened and mixed fiber raw materials, a double-curtain clamping type lapping machine is used for lapping, and finally, one-step pre-needling and two-step main needling are adopted to prepare the acetate fiber non-woven material.
3. The exhaust kitchen according to claim 2, wherein the external exhaust device is installed outside the kitchen side wall and abutted against the kitchen side wall, the first oil smoke gathering chamber is installed on the exhaust passage, the primary purification device is installed between the first oil smoke gathering chamber and the exhaust passage, the first oil smoke gathering chamber and the second oil smoke gathering chamber are communicated through the first communicating pipe, a secondary filtering device is arranged in the second oil smoke gathering chamber, and a second communicating pipe is arranged on one side of the secondary filtering device.
4. The exhaust kitchen according to claim 3, wherein a filter element is installed inside the secondary filter device, a third communicating pipe is arranged on the other side of the secondary filter device, the other end of the third communicating pipe is communicated with the tertiary filter device, the other side of the tertiary filter device is communicated with the auxiliary exhaust fan through a fourth communicating pipe, the auxiliary exhaust fan is further connected with a fifth communicating pipe and a sixth communicating pipe, the other end of the fifth communicating pipe is communicated with the inside of the kitchen, and the other end of the sixth communicating pipe penetrates out of the exhaust device shell.
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| CN201810130749.6A CN108344010B (en) | 2018-02-08 | 2018-02-08 | Chinese meal gas stove oil fume purification device and exhaust kitchen using same |
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| CN201810130749.6A CN108344010B (en) | 2018-02-08 | 2018-02-08 | Chinese meal gas stove oil fume purification device and exhaust kitchen using same |
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| CN108344010A CN108344010A (en) | 2018-07-31 |
| CN108344010B true CN108344010B (en) | 2020-01-03 |
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| CN1366575A (en) * | 2000-02-22 | 2002-08-28 | 丰田自动车株式会社 | Particulate filter |
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| CN108344010A (en) | 2018-07-31 |
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