CN113739233B

CN113739233B - Fume purifying integrated machine

Info

Publication number: CN113739233B
Application number: CN202111068178.6A
Authority: CN
Inventors: 陶世勇
Original assignee: Zhejiang Emeet Electric Appliance Co ltd
Current assignee: Zhejiang Emeet Electric Appliance Co ltd
Priority date: 2021-09-13
Filing date: 2021-09-13
Publication date: 2023-07-14
Anticipated expiration: 2041-09-13
Also published as: CN113739233A

Abstract

The application relates to the technical field of oil fume purification, in particular to an oil fume purification all-in-one machine, which comprises a machine case, wherein at least one inner cavity flue is arranged in the machine case, a high-efficiency oil fume filter and an exhaust fan are arranged in each inner cavity flue, the exhaust fan is positioned between the high-efficiency oil fume filter and an exhaust port on the machine case, a booster filter fan is arranged in the inner cavity flue between an air suction port of the machine case and the high-efficiency oil fume filter or at the air suction port of the machine case, and the exhaust fan and the booster filter fan are centrifugal fans; an atomization nozzle for spraying water to the air inlet of the booster filter fan is arranged at the air inlet of the booster filter fan. This application has and improves the advantage of oil smoke absorption efficiency under the prerequisite that guarantee filtration efficiency and noise are low.

Description

Fume purifying integrated machine

Technical Field

The application relates to the technical field of oil fume purification, in particular to an oil fume purification all-in-one machine.

Background

The kitchen ventilator is an electric appliance for sucking and cleaning substances such as oil smoke generated during cooking in a kitchen. The traditional range hood is mainly used for sucking and discharging substances such as oil smoke in a kitchen into the range hood and then discharging the substances into the outside air.

With the enhancement of environmental protection consciousness, the oil smoke in the industries of catering, food processing and the like is not allowed to be directly discharged, and the oil smoke in the industries of catering, food processing and the like is discharged after being purified. The traditional fume purifying treatment mode of fume sucking, exhausting and purifying fume through fume pipe, fume purifier and blower is replaced by fume purifying integrated fume sucking, exhausting and purifying fume machine gradually due to high cost, complicated manufacture and installation and fire hazard in fume channel. In order to better protect the environment, the oil fume purification all-in-one machine adopts an indoor circulation working mode without exhausting to the outside through arranging a plurality of high-efficiency oil fume filters, which naturally is the maximum protection to the environment; in the market, the oil smoke purifying integrated machine which does not connect with the outer smoke exhaust pipe and adopts the internal circulation work is commonly called as an internal circulation oil smoke purifying integrated machine.

In order to efficiently remove suspended matters such as grease, smoke dust, water vapor and the like and odor molecules in the oil smoke gas in the purification function, various high-efficiency oil smoke filters such as a high-density net wire filter screen, a centrifugal oil slinging net disc, an electrostatic high-voltage electric field module, an active carbon odor removing net and the like are arranged on a flue at the front end of a fan in the current oil smoke purification all-in-one machine in the market;

however, the high-efficiency oil smoke filters arranged in the flue at the front end of the fan can generate resistance to the passing oil smoke gas while purifying the oil smoke gas, so that the loss attenuation of the oil smoke suction wind pressure of the all-in-one machine is caused. Particularly, the higher the filtering efficiency is, the larger the wind resistance is, so that the oil fume absorption efficiency of the existing oil fume purifying integrated machine for efficiently filtering the oil fume gas is generally low; and in the use process, the suction force of the oil smoke purifying integrated machine gradually attenuates and becomes smaller along with the increase of the wind resistance of the high-efficiency oil smoke filter.

Although the oil smoke absorption efficiency can be improved by increasing the power, the size and the like of the fan, the actual improvement is limited, and the problems of large volume of the oil smoke purifying integral body or overlarge working noise and the like can be caused.

Disclosure of Invention

In order to improve the oil smoke absorption efficiency under the prerequisite of guaranteeing filtration efficiency and noise low, this application provides a lampblack purification all-in-one.

The application provides a lampblack purification all-in-one adopts following technical scheme:

the oil smoke purifying integrated machine comprises a machine case, wherein at least one inner cavity flue is arranged in the machine case, each inner cavity flue is internally provided with a high-efficiency oil smoke filter and an exhaust fan, the exhaust fan is positioned between the high-efficiency oil smoke filter and an exhaust port on the machine case, a booster filter fan is arranged in the inner cavity flue between an air suction port of the machine case and the high-efficiency oil smoke filter or at the air suction port of the machine case, and the exhaust fan and the booster filter fan are both centrifugal fans; an atomization nozzle for spraying water to the air inlet of the booster filter fan is arranged at the air inlet of the booster filter fan.

Through adopting above-mentioned technical scheme, the high-efficient oil smoke filter in the oil smoke purifier can play high-efficient filtration and the gaseous effect of purifying the oil smoke, realizes indoor circulation, then sets up respectively around high-efficient oil smoke filter and selects centrifugal fan's booster filter fan and exhaust fan, can effectively overcome high windage of high-efficient oil smoke filter.

The arrangement of the series structure of the boost filter fan and the exhaust fan breaks through the design convention that the centrifugal fan is only arranged on the flue at the rear part of the oil smoke filter and used as the only power for the oil smoke purification of the oil smoke purification integrated machine in the current oil smoke purification integrated machine design.

The air quantity and the air pressure of the integrated machine after the serial connection of the two centrifugal fans with the matched performances are obviously larger than those of the two centrifugal fans which are connected in parallel or independently work, and the noise is lower.

In the application, the suction force of the air suction port is improved by arranging a booster filter fan at the air suction port. More mainly, the centrifugal fan is adopted to set up, can play the wind pressure in the inner chamber flue before the high-efficient oil smoke filter of improvement, is equivalent to providing a thrust that passes the high-efficient oil smoke filter, and the exhaust fan provides pulling force at the opposite side, makes the flue gas pass the high-efficient oil smoke filter more easily instead to have the effect of slowing down and even solving wind pressure loss attenuation.

The atomizing nozzle sprays water mist or water drops, so that the water mist or water drops on the blades of the air neutralizing booster filter fan are contacted with the oil smoke gas, the temperature of the oil smoke gas can be reduced, the condensation of oil suspended matters can be accelerated, and odor molecules and the like which are easy to dissolve in water in the oil smoke gas can be absorbed to play a purifying effect. And the blades rotating at a high speed drive the oil smoke gas to rotate at a high speed, so that suspended matters such as grease, smoke and water vapor in the oil smoke gas are thrown onto the inner wall of the fan under the action of centrifugal force, the oil smoke gas is filtered, the supercharging filtering fan is further provided with a filtering effect, and the filtering effect of the oil smoke purifying integrated machine is improved.

In addition, since the fan power does not need to be increased, noise can be in a controllable range.

Optionally: the nozzle of the atomizing nozzle is obliquely arranged towards the inside of the booster filter fan, and the nozzle is arranged in a way of deviating from the axial lead of the booster filter fan towards the inside.

Through adopting above-mentioned technical scheme, slope setting makes water smoke spout to the blade of fan better on to can also form certain impact to the blade, play the effect of cleaning the blade, make the grease suspended solid on the blade more easily centrifugal throwing away. The water mist can be better sprayed onto the blades of the fan by being arranged away from the axial lead.

Optionally: the case is provided with a water tank capable of automatically supplementing water according to the water level and a booster pump connected with the water tank, and a water outlet of the booster pump is connected with the atomizing nozzle through a water pipe;

or, a booster pump connected with the tap water pipe is arranged on the case, and a water outlet of the booster pump is connected with the atomizing nozzle through a water pipe.

Through adopting above-mentioned technical scheme, realize that atomizer sprays water constantly, and can possess certain water pressure and wash the blade.

Optionally: the side where the air inlet of the booster filter fan is positioned is provided with a temperature sensor for controlling the starting of the booster pump.

By adopting the technical scheme, the starting temperature of the atomizing nozzle can be controlled, because the temperature of the oil smoke gas when entering the range hood is low when the oil smoke is low, the filtering effect of the atomizing nozzle is not used at this time enough, and unnecessary energy consumption and water resource waste are avoided.

Optionally: the section of inner cavity flue between the boost filter fan and the high-efficiency oil smoke filter comprises a boost flue which is arranged in a 130-180-degree turn.

Through adopting above-mentioned technical scheme, through the setting of boost flue, make the oil smoke gas when passing through the boost flue of turning, some suspended solid in the oil smoke gas can get rid of on the boost flue inner wall under centrifugal force effect, have the effect of filtering oil smoke gas.

Optionally: the corner side wall of the pressurizing flue is provided with an impact filter screen plate.

By adopting the technical scheme, when the oil smoke gas flows to the impact filter screen plate, suspended matters in the oil smoke gas can be accumulated on the impact filter screen plate under the action of centrifugal force because the airflow direction is reversely changed. In addition, part of the air flow can pass through the screen plate, which is equivalent to one-time screen plate filtration, thereby further improving the filtration effect. In addition, impact filter screen plate can also cushion the impact of air current to reversing flue inner wall, reduces the air current noise.

Optionally: the impact filter screen plate is arranged over against the flue in front of the pressurizing flue, and the area of the impact filter screen plate is larger than the cross-sectional area of the flue in front of the reversing flue.

Through adopting above-mentioned technical scheme, just to and the area size setting can play best filtration and noise reduction effect, and its reason is that when the air current in the flue before the reversal flue got into the reversal flue, the impact point is mainly just to the position of getting into the air current at the reversal flue, and great area can be more abundant filters the air current, improves the filter effect.

Optionally: the exhaust fan is driven by the output constant-power motor, and the boost filter fan is driven by the constant-speed motor.

Through adopting above-mentioned technical scheme, the conventional constant speed motor drive that uses of lampblack absorber fan, and set to constant power with the exhaust fan in this application, can make the exhaust fan rotational speed carry out automatically regulated according to the resistance size, ensure in the use when high-efficient lampblack filter increases, resistance progressively increases along with filtration time, constant power motor drive can increase the rotational speed along with high-efficient lampblack filter resistance increases automatically, keeps the discharge of exhaust fan relatively stable. The supercharging and filtering fan is driven by a constant-speed motor, so that the combination of the supercharging and filtering fan and the constant-speed motor can ensure that the capability of sucking the oil fume of the integrated machine is stable in an optimal state in the use process.

Optionally: the bottom of the boost filter fan is provided with a drain hole, a water pan is arranged below the boost filter fan, and the water pan is arranged on the case and communicated with an oil groove on the case.

Through adopting above-mentioned technical scheme, centrifugal fan structure makes water and the greasy dirt of centrifugal filtration in it be difficult for being discharged, consequently sets up the blowdown hole and realizes the blowdown to in leading-in oil groove of sewage through the water collector.

Optionally: the high-efficiency oil fume filter sequentially comprises at least one multi-layer silk screen filter plate, at least one high-voltage electric field module and at least one active carbon screen plate along the airflow direction.

By adopting the technical scheme, the multi-layer silk screen filter screen plate performs coarse filtration through blocking; the high-voltage electric field module ionizes air, and the ionized charges charge pollution suspended matters such as grease, smoke dust and the like in the oil smoke gas, and the charged pollution suspended matters move towards the corresponding oil accumulation electrode under the action of an electric field and are accumulated on the surface of the oil accumulation electrode grid of the high-voltage electric field module; the activated carbon filled in the activated carbon net plate can be used for adsorbing and deodorizing the oil smoke gas to finish purification.

In summary, the present application has the following beneficial effects:

1. the suction force of the suction inlet of the fume purifying integrated machine is improved, and the problem of wind pressure loss and attenuation of an inner cavity flue caused by the efficient fume filter is slowed down or even solved;

2. the spray head is combined with the booster filter fan, and the filter effect can be effectively improved by combining the booster flue with the impact filter screen plate;

3. the size and the power of the fan are not required to be increased, the oil fume absorbing and purifying integrated machine is effectively ensured to be stable in the optimal state in the use process, and the low-noise operation effect can be achieved under the action of the impact filter screen plate.

Drawings

Fig. 1 is a schematic view of the first embodiment showing the structure of the bottom;

FIG. 2 is a schematic diagram of a second embodiment showing the front and top structures;

fig. 3 is a schematic view of a third embodiment, mainly illustrating the structure of the fume collecting hood;

fig. 4 is a cross-sectional view of the first embodiment showing the structure of the high-efficiency soot filter and the exhaust fan;

FIG. 5 is a second cross-sectional block diagram of the first embodiment showing the configuration of the plenum and impingement screen;

FIG. 6 is a schematic view of a booster filter fan in accordance with the first embodiment;

FIG. 7 is a front view of a boost filter blower of embodiment one;

FIG. 8 is a side view of a boost filter blower of embodiment one;

fig. 9 is a third cross-sectional structural view of the first embodiment showing the structure of the water pan and the oil sump;

fig. 10 is a schematic structural diagram of a booster filter fan in the second embodiment.

100, a case; 110. a fan case; 111. an exhaust port; 120. a fume collecting hood; 121. an air suction port; 122. a main board; 123. a smoke baffle; 124. leading a grease filter screen plate; 125. a water receiving tray; 130. an inner cavity flue; 131. a pressurizing flue; 140. an oil groove; 150. a partition plate; 200. a boost filtration fan; 210. a sewage outlet; 220. a safety protection net; 300. an efficient oil smoke filter; 310. a multi-layer screen filter plate; 320. a high voltage electric field module; 330. an activated carbon screen; 400. an exhaust fan; 500. centrifugal oil slinging net disc; 600. an atomizing nozzle; 700. a temperature sensor; 710. a mounting plate; 800. a water tank; 900. impact the screen plate.

Detailed Description

The present application is described in further detail below with reference to the accompanying drawings.

In the description of the present application, it should be understood that the terms "upper," "lower," "left," "right," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Example 1: as shown in fig. 1 and 2, the fume purification integrated machine comprises a machine case 100, wherein the machine case 100 comprises a fan case 110 at the upper part and a fume collecting hood 120 arranged at the lower part of the fan case 110, an exhaust port 111 is arranged at the top of the fan case 110, and an air suction port 121 is arranged on the fume collecting hood 120.

Referring to fig. 3, the fume collecting hood 120 includes a main plate 122 and three fume blocking plates 123, one end of the main plate 122 is connected to the bottom of the rear surface of the fan case 110, and the other end is connected to the bottom of the front surface of the fan case 110 while being inclined upward. One end portion connected to the front surface of the fan case 110 is horizontally provided for mounting a lighting lamp or the like.

The air suction port 121 is arranged on the main board 122, and a front grease filter screen plate 124 is detachably arranged at the air suction port 121, and is formed by overlapping a plurality of layers of metal meshes, and can be installed in a bolt, a buckle and the like mode.

In this embodiment, the structure is taken as an example of an integrated machine installed on a wall surface, if the integrated machine is a hanging type integrated machine, the main board 122 on the integrated machine is in a V-shaped structure, and the air inlets 121 are all arranged on two inclined surfaces, and the structure of the hanging type integrated machine is not specifically described in this embodiment.

The three smoke baffle plates 123 are respectively arranged at two sides and the upper end of the main plate 122, and a smoke collecting cavity structure recessed from bottom to top is surrounded by the three smoke baffle plates 123 and the main plate 122.

The smoke collecting hood 120 is hinged between the smoke baffle 123 on the front side of the chassis 100 and the main board 122, so that the smoke baffle 123 can be turned inwards, and the smoke baffle 123 on the front side is made of transparent material.

As shown in fig. 4 and 5, at least one inner cavity flue 130 is formed by communicating the air inlet 121 and the air outlet 111, and a booster filter fan 200, an impact filter screen 900, a high efficiency soot filter 300, and an exhaust fan 400 are sequentially disposed in the inner cavity flue 130 in the air flow direction.

The booster filter fan 200 is mounted on the fan box 110 along the horizontal direction, the air inlet of the booster filter fan is downward, and the booster filter fan 200 is located above the main board 122, and is a centrifugal fan.

As shown in fig. 6 and 7, an atomizer 600 is provided at the air inlet of the booster filter fan 200.

The number of the atomizing nozzles 600 may be one or more, and when a plurality of atomizing nozzles are used, the atomizing nozzles may be distributed at equal intervals around the axial line of the booster filter fan 200, and in this embodiment, one atomizing nozzle is taken as an example.

The atomizer 600 is fixedly installed on the outer side wall of the booster filter fan 200, and the distance between the nozzle of the atomizer 600 and the center of the booster filter fan 200 is smaller than the radius of the air inlet, so that the nozzle is positioned in the air inlet and can spray water to the air inlet.

Referring to fig. 7 and 8, the nozzle of the atomizer 600 is inclined toward the inside of the booster filter fan 200, and the nozzle is oriented to be offset from the axial line of the booster filter fan 200.

Wherein the atomizer 600 is connected to a booster pump through a pipe, the booster pump is installed in the blower box 110, and is not shown in the drawing. The booster pump is connected with the water tank 800 or the tap water pipe through a pipeline, and the atomizing nozzle 600 starts spraying water when the booster pump is started. As shown in fig. 2, in this embodiment, a water tank 800 is provided on a fan case 110, and high water level and low water level detection is provided in the water tank 800, and automatic water replenishment is achieved by combining with an electromagnetic valve.

Referring to fig. 7, a drain 210 is disposed on the housing of the booster filter fan 200, and the drain hole is disposed in an intersecting or gap with the sidewall of the booster filter fan 200, in this embodiment, in a gap.

In addition, although the drain 210 is provided as one in this embodiment, a plurality of drain outlets may be provided, the size and the number of drain outlets cannot greatly affect the supercharging effect of the booster filter fan 200.

Referring to fig. 6 and 7, a safety protection net 220 is disposed at the air inlet of the booster filter fan 200, the size of the safety protection net 220 is larger than that of the air inlet of the booster filter fan 200, and the safety protection net 220 is connected to the housing of the booster filter fan 200 by bolts, welding or the like, in this embodiment by bolts.

The safety protection net 220 can adopt a grid structure with larger intervals, and can also be a cross grid, so that the safety protection net can prevent hands and the like from extending into the air inlet.

As shown in fig. 9, the inclined portion of the main plate 122, except the air suction port 121, which is located below the booster filter fan 200 forms a water pan 125, the bottom of the water pan 125 is provided with an oil groove 140, and the bottom plate of the water pan 125 is provided with a plurality of through holes communicating with the oil groove 140.

Referring to fig. 4, the high efficiency soot filter 300 includes at least one multi-layered screen filter screen 310, at least one high voltage electric field module 320, and at least one activated carbon screen 330 in this embodiment, one multi-layered screen filter screen 310, two high voltage electric field modules 320, and one activated carbon screen 330 in this embodiment.

The multi-layer silk screen filter screen 310, the high-voltage electric field module 320 and the activated carbon screen 330 can be installed on the fan box 110 through sliding insertion, and also can be fixedly connected through a bolt mode, and in the embodiment, sliding insertion is adopted.

Referring to fig. 4 and 5, a section of inner cavity flue 130 between the booster filter fan 200 and the high-efficiency oil smoke filter 300 comprises a booster flue 131, and the booster flue 131 is arranged in a 130-180-degree turn.

In this embodiment, the booster duct 131 takes a 180 ° turn as an example, but the present invention is not limited thereto, and the turning angle of the booster duct 131 may be designed based on a specific range hood structure, and may be 135 °, 140 °, 145 °, 150 °, 155 °, 160 °, 165 °, 175 °, or the like.

The front and rear flue of the booster flue 131 are respectively a front booster flue 131 and a rear booster flue 131, and the front booster flue 131 and the rear booster flue 131 are arranged up and down and separated by a partition 150. Wherein, the rear booster flue 131 is located above the front booster flue 131, the air outlet of the booster filter fan 200 is communicated with the front booster flue 131, and the high-efficiency oil smoke filter 300 is arranged in the rear booster flue 131.

The impact filter screen plate 900 is installed on the corner side wall of the pressurizing flue 131, and the installation mode can be a mode of bolt connection, welding, sliding insertion and the like, preferably a sliding insertion mode, and can be taken out and cleaned conveniently.

The impact filter screen plate 900 is arranged opposite to the air outlet of the booster filter fan 200, and the area of the impact filter screen plate 900 is larger than the cross-sectional area of the front booster flue 131, which may be smaller than the area of the side wall of the booster flue 131 in this embodiment, or may be the same as the area of the side wall of the booster flue 131.

The embodiment is provided for saving materials, and the multi-layer screen filter plate 310 can be directly used as the impact filter plate 900, so that the production cost is low.

The thickness of the impact filter screen plate 900 is 2 cm-15 cm, and the specific thickness is determined according to the size of the pressurizing flue 131.

The corner side wall refers to a side wall opposite to the air inlet of the front pressurizing flue 131, namely a side wall for realizing reversing by air flow impact; the dimensions of the plenum 131 refer to the distance between the end of the partition 150 and the sidewall of the plenum 131.

Referring to fig. 1 and 2, a maintenance door is provided on the front surface of the fan case 110, so that the efficient soot filter 300 can be removed and maintained at a later stage and cleaned.

Referring to fig. 4, the exhaust fan 400 is a centrifugal fan, which is vertically mounted on the fan housing 110, and an air outlet thereof is disposed opposite to the air outlet 111.

In addition, the exhaust fan 400 is driven by an output constant power motor, and the boost filter fan 200 is driven by a constant speed motor.

Working principle:

the oil smoke gas rises from the air suction port 121 and enters the inner cavity flue 130, and the front oil filter screen plate 124 can perform first filtration when passing through the air suction port 121.

The first filtered oil fume is sucked from the air inlet of the booster filter fan 200, in the sucking process, the atomization nozzle 600 sprays water, odor molecules which are easy to dissolve in water in the oil fume are adsorbed by water drops, and grease suspended matters are quickly condensed under the cooling effect of the water drops, and finally adhere to the blades of the booster filter fan 200, and are thrown to the inner side wall of the fan under the effect of centrifugal force generated by high-speed rotation of the booster filter fan 200.

The oil and fat suspended matter and water in the booster filter fan 200 flow down through the drain outlet 210, enter the water pan 125, and finally flow into the oil sump 140 through the through hole.

And the oil fume is sent out from the air outlet of the booster filter fan 200 and enters the booster flue 131, the oil fume is turned 180 degrees under the guidance of the booster flue 131, centrifugally filtered in the process, and further filtered and noise reduced through the impact filter plate.

The turned oil fume gas is sent to the high-efficiency oil fume filter 300, coarse filtration is completed through the multi-layer screen mesh plate 310, then ionization is carried out in the high-voltage electric field module 320, the ionized charges enable pollution suspended matters such as grease, smoke dust and the like in the oil fume gas to be charged, the charged pollution suspended matters move towards the corresponding oil accumulation electrode direction under the action of an electric field and are accumulated on the surface of the oil accumulation electrode grid of the high-voltage electric field module 320, and after the odor is adsorbed and removed through the activated carbon screen plate 330, the oil fume is discharged from the exhaust port 111 through the exhaust fan 400.

Example 2: as shown in fig. 10, the difference from embodiment 1 is that a mounting plate 710 is fixedly provided on the housing of the booster filter fan 200 by means of bolts, welding, etc., the mounting plate 710 is disposed perpendicular to the housing of the booster filter fan 200, and a temperature sensor 700 is mounted on the mounting plate 710.

The temperature sensor 700 is configured to detect a temperature of the oil smoke gas entering the air inlet of the booster filter fan 200, and send a corresponding detection signal, and when the detected temperature is less than or equal to a preset temperature, the booster pump does not start the atomizer 600 to spray water; when the detected temperature is greater than the preset temperature, the detection signal triggers the booster pump to start, and the atomizer 600 starts spraying water. Wherein, can also set up to detect the temperature and be less than the preset temperature, the booster pump is not started, is greater than or equal to the preset temperature and starts.

The embodiments of the present invention are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in this way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. The utility model provides an oil smoke purifies all-in-one, includes quick-witted case (100), is equipped with at least one inner chamber flue (130) in quick-witted case (100), all is equipped with high-efficient oil smoke filter (300) and exhaust fan (400) in every inner chamber flue (130), and exhaust fan (400) are located between high-efficient oil smoke filter (300) and gas vent (111) on quick-witted case (100), characterized by: a booster filter fan (200) is arranged in an inner cavity flue (130) between an air suction port (121) of the case (100) and the high-efficiency oil smoke filter (300) or at the air suction port (121) of the case (100), and the exhaust fan (400) and the booster filter fan (200) are centrifugal fans; an atomization nozzle (600) for spraying water to the air inlet of the booster filter fan (200) is arranged at the air inlet of the booster filter fan (200);

the section of inner cavity flue (130) between the booster filter fan (200) and the high-efficiency oil smoke filter (300) comprises a booster flue (131), and the booster flue (131) is arranged in a 130-180-degree turning mode.

2. The fume purification all-in-one machine according to claim 1, wherein: the nozzle of the atomization nozzle (600) is obliquely arranged towards the inside of the booster filter fan (200), and the nozzle is arranged in a way of deviating from the axial lead of the booster filter fan (200).

3. The fume purification all-in-one machine according to claim 1, wherein: a water tank (800) capable of automatically supplementing water according to the water level and a booster pump connected with the water tank (800) are arranged on the case (100), and a water outlet of the booster pump is connected with the atomizing nozzle (600) through a water pipe;

or, a booster pump connected with a tap water pipe is arranged on the case (100), and a water outlet of the booster pump is connected with the atomizing nozzle (600) through a water pipe.

4. A fume purification all-in-one machine according to claim 3, wherein: the side of the air inlet of the booster filter fan (200) is provided with a temperature sensor (700) for controlling the starting of the booster pump.

5. The fume purification all-in-one machine according to claim 1, wherein: the corner side wall of the pressurizing flue (131) is provided with an impact filter screen plate (900).

6. The fume purification all-in-one machine according to claim 5, wherein: the impact filter screen plate (900) is arranged opposite to the flue in front of the pressurizing flue (131), and the area of the impact filter screen plate (900) is larger than the cross-sectional area of the flue in front of the reversing flue.

7. The fume purification all-in-one machine according to claim 1, wherein: the exhaust fan (400) is driven by an output constant-power motor, and the boost filter fan (200) is driven by a constant-speed motor.

8. The fume purification all-in-one machine according to claim 1, wherein: a drain hole is arranged at the bottom of the booster filter fan (200), a water pan (125) is arranged below the booster filter fan (200), and the water pan (125) is arranged on the case (100) and is communicated with an oil groove (140) on the case (100).

9. The fume purification all-in-one machine according to claim 1, wherein: the high-efficiency soot filter (300) comprises at least one multi-layer wire mesh filter screen (310), at least one high-voltage electric field module (320) and at least one activated carbon screen (330) in sequence along the airflow direction.