CN110848778B - Oil fume purifying device - Google Patents

Abstract

The invention discloses an oil smoke purification device, which comprises: the shell is provided with a smoke suction port, a smoke exhaust port and an air duct, and the air duct is provided with an air inlet section connected with the smoke suction port and an air outlet section connected with the smoke exhaust port; the main fan is arranged at the air outlet section; and the booster fan is arranged at the air inlet section and is a cross-flow fan. The technical scheme of the invention can improve the wind pressure of the oil fume purification device.

Description

Oil fume purifying device

Technical Field

The invention relates to the field of household appliances, in particular to an oil fume purification device.

Background

The exhaust flow of the oil fume purification device in a use state mainly depends on the air pressure of a fan system of the oil fume purification device, and the larger the air pressure is, the larger the exhaust flow is. When the common household oil fume purification device is used, oil fume needs to be discharged through resistance devices such as a smoke exhaust pipe, a check valve and a smoke exhaust channel, and due to the resistance devices, certain back pressure exists in the oil fume at an oil fume discharge port, and the air exhaust flow of the range hood can be greatly influenced due to the existence of the back pressure. The air pressure of the fan system plays a positive role in the exhaust flow of the oil fume purification device, and the existence of back pressure plays a negative role in the exhaust flow of the oil fume purification device. However, the wind pressure of the fan system of the existing oil fume purification device is small, and the capability of breaking through backpressure is weak.

Disclosure of Invention

The invention mainly aims to provide an oil fume purification device, aiming at improving the air pressure of the oil fume purification device.

In order to achieve the above object, the present invention provides a lampblack purification device comprising:

the shell is provided with a smoke suction port, a smoke exhaust port and an air duct, and the air duct is provided with an air inlet section connected with the smoke suction port and an air outlet section connected with the smoke exhaust port;

the main fan is arranged at the air outlet section; and

and the booster fan is arranged at the air inlet section and is a cross-flow fan.

Because the booster fan is added, the rotation of the booster fan can drive the airflow at the smoke suction port to flow, when the smoke rises quickly, the enhanced airflow can obtain stronger smoke capture capacity, and the smoke suction capacity of the oil smoke purification device is enhanced.

Optionally, the main blower has an air inlet area, and the air outlet direction of the booster blower faces the air inlet area to guide the flue gas to the air inlet area.

Because the air-out direction of booster fan is towards the regional of the air inlet of main fan, consequently can significantly reduce the loss of wind pressure.

Optionally, the main air blower has wind-guiding region and at least two air inlet regions, the air inlet section is equipped with at least two booster fan, at least two the one end that booster fan was close to corresponds the wind-guiding region, at least two the one end that booster fan was kept away from is towards different the regional slope of air inlet to lead the flue gas the air inlet region.

Because a plurality of booster fans use the wind guide area as the center and set towards different air inlet areas, the concentrated action of the air quantity on the wind guide area is avoided, the wind guide towards different directions is realized, the air quantity is dispersed, namely, the air pressure in different directions is strengthened, and the increase of the air input at different positions is realized.

Optionally, the oil fume purification device is a range hood, and the air guide area is located at the bottom of the main fan; or the oil fume purification device is an integrated stove, and the air guide area is positioned at the top of the main fan;

the left side and the right side of the main fan are respectively provided with one air inlet area, and the two booster fans are distributed along the length direction of the smoking port.

This kind of scheme makes the booster fan that admits air respectively and correspond left and right sides setting about main fan to admit air all obtains strengthening about making main fan, thereby better with the air current dispersion to the left and right sides.

Optionally, the air guiding area includes a first flow guiding surface and a second flow guiding surface, and the first flow guiding surface and the second flow guiding surface are connected to each other and extend obliquely toward different air inlet areas respectively.

After the smoke is hit on the first guide surface or the second guide surface, the smoke can upwards and obliquely flow along the first guide surface or the second guide surface and flow to an air inlet area.

Optionally, the air inlet section is provided with a plurality of booster fans, and the booster fans are arranged along the length direction of the smoking port.

A plurality of booster fans distribute in the left and right direction of the shell, can disperse the air intake to the left and right of the smoke suction port, and strengthen the smoke collecting capacity of the left and right of the oil smoke purification device.

Optionally, the lampblack purification device further comprises a driving motor connected with the booster fans, the driving motor is arranged between every two adjacent booster fans, and the driving motor is arranged corresponding to the bottom or the top of the main fan.

Through corresponding the setting driving motor in main fan bottom, driving motor plays certain hindrance effect to the air current in smoking mouth middle part for the air current is towards both sides dispersion, thereby has avoided the concentration of middle part air current.

Optionally, the oil fume purification device is a range hood or an integrated stove; and/or the booster fan extends along the length direction of the smoking port.

The air flow is dispersed towards the two sides, so that the concentration of the air flow in the middle is avoided.

Optionally, the oil smoke purifier still includes the filter screen, the filter screen with booster fan is connected.

The filter screen rotates along with booster fan, can constantly collide the flue gas at filter screen pivoted in-process, makes the particulate matter in the flue gas for example grease etc. by the filter screen interception, and this collision process can fully filter the flue gas, strengthens the filter effect.

Optionally, the filter screen is cylindrical and is sleeved with the booster fan.

Should be the form of establishing of endotheca for the filter area of filter screen is bigger, and can intercept the greasy dirt in the flue gas all around.

Optionally, the end of the booster fan has a mounting port;

the filter screen includes the connection pad and sets up cartridge filter on the connection pad, the cartridge filter certainly the installing port stretches into in the supercharging fan, the connection pad shutoff the installing port.

The mounting port is plugged through the structure on the filter screen, so that the structure of the cross-flow fan can be simplified, and the arrangement of parts is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a conventional lampblack purification device;

FIG. 2 is a bottom view of the fume cleaning device of FIG. 1;

FIG. 3 is a schematic structural diagram of an embodiment of the lampblack purification device;

FIG. 4 is a schematic sectional view of the fume cleaning apparatus of FIG. 3;

FIG. 5 is a schematic view of an internal structure of an embodiment of the lampblack purification device;

FIG. 6 is a bottom view of an embodiment of the lampblack purification device;

FIG. 7 is a schematic structural view of a booster fan in an embodiment of the lampblack purification device;

FIG. 8 is an exploded view of the booster fan of FIG. 7;

fig. 9 is a schematic structural view of a booster fan in an embodiment of the lampblack purification device;

FIG. 10 is an exploded view of the booster fan of FIG. 9;

fig. 11 is an exploded schematic view of a booster fan and a filter screen in an embodiment of the lampblack purification device.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				10	Outer casing	30	Booster fan
11	Smoking mouth	31	Supercharging wind wheel
				12	Smoke outlet	32	Spiral casing
13	Air duct	33	Mounting port
				131	Air inlet section	40	Driving motor
132	Air outlet section	51	Supporting plate
				14	Front panel	52	Mounting bracket
15	Back plate	53	Protective cover
				16	Opening and closing panel	531	Lower plate body
20	Main fan	532	Upper plate body
				21	Air guiding area	54	Fixing support
211	First flow guide surface	60	Filter screen
				212	Second flow guide surface	61	Connecting disc
22	Air intake area	62	Filter cartridge

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

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, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention also provides an oil fume purification device which is a range hood or an integrated stove, and for the dust collection stove, the dust collection stove comprises the range hood and a stove body, wherein the range hood is arranged on the stove body, and the range hood and the stove body are combined to form an integrated dust collection stove. Of course, the dust collecting range may also include one or more of a dishwasher, a sterilizer, or in an oven, etc.

In the embodiment of the present invention, please refer to fig. 3 to fig. 5 in combination, the lampblack purification device includes a housing 10 and a main fan 20, the housing 10 is provided with a smoke suction port 11 and a smoke exhaust port 12, an air duct 13 is formed in the housing 10, and the air duct 13 communicates the smoke suction port 11 and the smoke exhaust port 12. The air duct 13 has an air inlet section 131 and an air outlet section 132, the air inlet section 131 is connected to the smoke suction port 11, the air outlet section 132 is connected to the smoke discharge port 12, and the main fan 20 is disposed at the air outlet section 132. This main fan 20 is centrifugal fan for the wind pressure is bigger, and the oil absorption cigarette effect is better. The dotted lines in the figure are only used for illustrating the division between the air inlet section 131 and the air outlet section 132, but in other embodiments, the air inlet section 131 and the air outlet section 132 may be divided from other positions.

Specifically, for the range hood, the housing 10 includes a decorative cover and a smoke collecting cover, the decorative cover is hollow, optionally, the decorative cover is substantially square, a smoke outlet 12 is further provided at the top of the decorative cover, and a check valve is provided at the smoke outlet 12. Of course, the trim cover may also be cylindrical or irregularly shaped, etc. The smoke collecting cover is arranged below the decorative cover and is provided with a smoke suction port 11, and the cooked smoke is sucked into the air duct 13 from the smoke suction port 11 and is discharged from the smoke discharge port 12 under the action of the centrifugal fan. Specifically, the housing 10 further includes a front panel 14, the front panel 14 forming a part of the smoke collecting hood, and the smoke suction port 11 is provided on the front panel 14.

Because the oil smoke entering from the smoke exhaust port 11 needs to be exhausted through resistance devices such as a smoke exhaust pipe, a check valve and a smoke exhaust channel, the oil smoke has certain back pressure at the smoke exhaust port 12 due to the resistance devices, and the air exhaust flow of the range hood can be greatly influenced due to the back pressure. Although the pressure of the oil smoke is strengthened by the arrangement of the main fan 20, the obtained wind pressure is still small, and the capability of breaking through the back pressure is weak.

In view of this, in the embodiment of the present invention, a booster fan 30 is further disposed in the air intake section 131. Optionally, the booster fan 30 is disposed between the back panel 15 and the front panel 14, and the booster fan 30 is located above the smoking opening 11. Because the booster fan 30 is added, the rotation of the booster fan 30 can drive the airflow at the smoke suction port 11 to flow, when the smoke rises quickly, the strengthened airflow can obtain stronger smoke capture capacity, and the smoke suction capacity of the oil smoke purification device is strengthened. And booster fan 30 can be tentatively strengthened the wind pressure of air inlet section 131, and rethread main blower 20 further strengthens the wind pressure, finally obtains great wind pressure, better breakthrough backpressure. That is, the inlet air of the smoke suction port 11 can obtain an initial speed after passing through the booster fan 30, and the inlet air can obtain higher kinetic energy after being accelerated by the main fan 20. So its wind pressure that can strengthen original fume purification device fan system obtains stronger ability of breaching through the rear end pipe network.

For the form of connecting two centrifugal fans in series, that is, the main fan 20 and the booster fan 30 are both centrifugal fans, the centrifugal fan of the second stage at the rear end can bring a large resistance to the outlet airflow of the centrifugal fan of the first stage at the front end due to the large wind pressure generated by the centrifugal fans themselves. The high rotational speed of second level centrifugal fan can make the velocity of flow of the air current of first level centrifugal fan export and the inlet velocity of flow phase-match of second level centrifugal fan. In addition, the superposition of two high-speed centrifugal fans can lead to the increase of the noise of the whole machine. For the form of adopting one centrifugal fan or two centrifugal fans connected in series, if the rotating speeds of the two centrifugal fans are the same or similar, for the former, the air volume of a single centrifugal fan can reach 20-22m at the similar rotating speed³And/min. For the latter two centrifugal fans connected in series, the resistance of the rear second-stage centrifugal fan causes the whole air volume of the two centrifugal fans to be 16m³And the noise generated is approximately equal to the noise of a single fan under the same air quantity. Therefore, the two centrifugal fans are connected in series, which results in increased noise and insignificant increase of air volume.

In the embodiment of the present invention, the booster fan 30 is a cross-flow fan. The main fan 20 is a centrifugal fan and a cross-flow fan which are stacked, the cross-flow fan can play a certain supercharging effect, and under the same rotating speed, because the outlet pressure of the cross-flow fan is smaller than that of the centrifugal fan, the main fan 20 in the rear-end air outlet section 132 can not bring great resistance to the front-end supercharging fan 30 to influence the air outlet of the front-end supercharging fan 30, so the main fan 20 does not need high rotating speed, and the inlet flow speed of the main fan 20 can be matched with the outlet flow speed of the supercharging fan 30. Since the rotation speed of the main fan 20 can be small, the noise generated by the main fan 20 is necessarily small. The booster fan 30 is a cross-flow fan, and the noise generated by the cross-flow fan is far less than that of a centrifugal fan, so that the noise of the whole machine is low.

Referring to fig. 5 again, in an embodiment, the main blower 20 has an air intake region 22, and the air outlet direction of the booster blower 30 faces the air intake region 22 to guide the flue gas to the air intake region 22. In this embodiment, the air outlet direction of the booster fan 30 facing the air inlet region 22 means that, at least, the air outlet direction of the booster fan 30 has at least the same component as the air inlet direction of the air inlet region 22. For example, in some embodiments, the air inlet region 22 of the main fan 20 is disposed crosswise relative to the horizontal direction, that is, the air inlet region 22 is disposed on the other surface in the horizontal direction, and the air outlet direction of the booster fan 30 is upward or obliquely upward. Since the outlet air direction of the booster fan 30 is directed toward the inlet air region 22 of the main fan 20, the loss of the wind pressure can be greatly reduced.

In one embodiment, the main fan 20 has a wind guiding area 21 and at least two wind inlet areas 22, the wind inlet section 131 is provided with at least two of the booster fans 30, at least two ends of the booster fans 30 close to each other correspond to the wind guiding area 21, and at least two ends of the booster fans 30 far away from each other are inclined toward different wind inlet areas 22, so as to guide the smoke to the wind inlet areas 22. In this embodiment, the main blower 20 has a plurality of air intake regions 22, so that the air intake range can be enlarged, and the flue gas can be rapidly discharged. The plurality of booster fans 30 are arranged toward different air inlet regions 22 with the air guide region 21 as the center, for example, under the condition that the air inlet regions 22 are all arranged around the main fan 20, the plurality of booster fans 30 are radially arranged, and under the condition that the air inlet regions 22 are respectively arranged on the left side and the right side of the main fan 20, the two booster fans 30 are arranged in the left-right direction. In this embodiment, since the plurality of booster fans 30 are disposed toward the different air intake regions 22 with the air guide region 21 as the center, the air volume is prevented from being concentrated on the air guide region 21, and air guiding in different directions is realized, so that the air volume is dispersed, that is, the air pressure in different directions is enhanced, and the increase of the air intake volume at different positions is realized.

In the case where the booster fan 30 is a cross-flow fan, one end of the cross-flow fan along its axis is disposed corresponding to the air guide region 21, and the other end of the cross-flow fan along its axis extends obliquely toward the air inlet region 22. Here, the correspondence means that when the wind guide area 21 is located at the bottom of the main fan 20 and the wind intake area 22 is located on any one of the front, rear, left, and right surfaces, one end of the cross flow fan is located directly below the wind guide area 21.

In an embodiment, the oil fume purification apparatus is a range hood, the main fan 20 is located above the booster fan 30, the air guiding area 21 is located at the bottom of the main fan 20, the air inlet areas 22 are respectively disposed on the left side and the right side of the main fan 20, and the two booster fans 30 are distributed along the length direction of the smoke suction port 11. In this embodiment, one end of the booster fan 30 is located below the bottom of the main fan 20, the other end of the booster fan 30 extends obliquely upward, and the two booster fans 30 form a certain angle for setting. This kind of scheme makes main fan 20 admit air about respectively correspond the booster fan 30 of controlling setting to admit air all strengthened about making main fan 20. And the left and right arrangement form conforms to the structure that the shell 10 is long in the left and right directions, so that the booster fan 30 can extend in the left and right directions, and the integral airflow flowing in the left and right directions is enhanced. In addition, after the arrangement, the air inlet direction of the booster fan 30 is also inclined downward, namely, the air inlet can be directed to the smoke suction port 11 positioned below the booster fan, and the oil smoke near the smoke suction port 11 can be captured better.

In an embodiment, the wind guiding region 21 includes a first guiding surface 211 and a second guiding surface 212, and the first guiding surface 211 and the second guiding surface 212 are connected to each other and extend obliquely toward different wind inlet regions 22, respectively. Specifically, the first guide surface 211 and the second guide surface 212 are disposed at the bottom of the main fan 20. The ends of the first flow guiding surface 211 and the second flow guiding surface 212, which are far away from each other, extend obliquely upwards respectively, so that the first flow guiding surface 211 and the second flow guiding surface 212 form a V-shaped structure with an upward opening. After hitting the first guide surface 211 or the second guide surface 212, the flue gas flows upward and obliquely along the first guide surface 211 or the second guide surface 212 and flows toward the air intake area 22. In addition, in other embodiments, the wind guiding area 21 may only include one flow guiding surface disposed at the bottom of the main fan 20, and the flow guiding surface is a horizontal surface.

In an embodiment, the oil fume purification apparatus is an integrated oven, the main fan 20 is located below the booster fan 30, the air guiding area 21 is located at the top of the main fan 20, the air inlet areas 22 are respectively disposed on the left side and the right side of the main fan 20, and the two booster fans 30 are distributed along the length direction of the smoke suction port 11. The first guide surface 211 and the second guide surface 212 are disposed on the top of the main blower 20.

As shown in fig. 1 and 2, in the conventional lampblack purification device, lampblack at the smoke suction port 11 is drawn by the main fan 20, and the inlet air enters the air duct 13 in a certain flow direction. And since the main blower 20 is disposed at the middle position in the extending direction of the casing 10, the intake air at the smoking port 11 is concentrated at the middle and lower position of the smoking port 11, i.e., the second air flow. And the first air flow is the air flow captured from top to bottom, which is the slow flow that occurs under the traction of the second air flow. The first air flow and the second air flow form an air pressure area with low flow velocity around the smoking opening 11. As is apparent from fig. 2, the intake air of the smoke port 11 is concentrated in the middle in the left-right direction of the housing 10. The concentration of the intake air at the smoking port 11 is not favorable for the improvement and enhancement of the smoking effect.

Referring to fig. 5 and fig. 6, in order to solve the above problem, in an embodiment, the air intake section 131 is provided with a plurality of the booster fans 30, and the plurality of booster fans 30 are arranged along the length direction of the smoke suction port 11. The plurality of booster fans 30 are distributed in the left and right directions of the housing 10, and can disperse the intake air to the left and right of the smoke suction port 11, thereby enhancing the smoke collecting capability of the oil smoke purification device. And the rotation of the booster fan 30 can drive the airflow on the upper side of the smoking port 11 to flow, and the first airflow and the second airflow are enhanced. And when the smoke rises rapidly, the enhanced first airflow can obtain stronger smoke capture capacity, and the smoking capacity is enhanced, particularly the smoking capacity under small flow.

In this embodiment, the lampblack purification device further comprises a driving motor 40 connected with the booster fans 30, the driving motor 40 is arranged between two adjacent booster fans 30, and the driving motor 40 is arranged corresponding to the bottom or the top of the main fan 20. For the embodiment that the booster fan 30 is arranged below the main fan 20, the driving motor 40 corresponds to the bottom of the main fan 20; for the embodiment in which the booster fan 30 is disposed above the main fan 20, the driving motor 40 corresponds to the top of the main fan 20. When the booster fan 30 is not provided, the intensity of the airflow is generally gradually reduced toward the periphery centering on the main fan 20, so that the airflow is strongest at the position closer to the main fan 20. That is, when the main fan 20 is disposed at the middle portion of the length direction of the smoking port 11, the air flow at the middle portion of the smoking port 11 is the strongest. Through corresponding the setting driving motor 40 in main fan 20 bottom or top, driving motor 40 plays certain hindrance effect to the air current in smoking mouth 11 middle part for the air current is towards both sides dispersion, thereby has avoided the concentration of middle part air current.

In this embodiment, the plurality of booster fans 30 may share one driving motor 40, and of course, each booster fan 30 may also be separately provided with one driving motor 40, so that the switching of different booster fans 30 may be realized, and the number of the booster fans 30 that are switched on and the respective rotation speeds may be controlled according to the intensity of the oil smoke.

Referring to fig. 7 and 8, in an embodiment, a supporting plate 51 is disposed between two adjacent booster fans 30, the supporting plate 51 is connected to the housing 10, a mounting bracket 52 is disposed at an end of each booster fan 30, and the mounting bracket 52 is connected to the supporting plate 51. In this embodiment, the different booster fans 30 are each mounted on the support plate 51 by a different mounting bracket 52, so as to facilitate the removal of the booster fans 30.

In view of the above problem, in one embodiment, the booster fan 30 further extends along the length direction of the smoking opening 11. Similarly, after the booster fan 30 extends in the left-right direction, the booster fan 30 acts on each part in the length direction of the smoking opening 11, that is, the air flow in each part in the length direction of the smoking opening 11 is strengthened.

In conclusion, by arranging the plurality of booster fans 30 in the left-right direction or extending the booster fans 30 in the left-right direction, the flow field distribution of the air inlet front end of the oil smoke purification device can be improved, and better smoke gathering capability can be obtained.

In addition, the housing 10 further includes an opening and closing panel 16, the opening and closing panel 16 being capable of opening and closing the smoking port 11, and a lower end of the opening and closing panel 16 being rotatably connected with the front panel 14 to be capable of being rotatably opened inward to direct the second air flow upward so that the second air flow can flow upward along the opening and closing panel 16.

The booster fan 30 in the embodiment of the present invention may also be self-rotating, that is, the booster fan 30 is driven by the air flow driven by the main fan 20 to rotate, thereby improving the front end flow field and enhancing the oil smoke filtration. And the booster fan 30 cuts the oil smoke particles in the oil smoke, reducing the oil smoke particles from entering the main fan 20.

Referring to fig. 9 and 10 in combination, the booster fan 30 includes a booster wind wheel 31 and a volute 32, the booster wind wheel 31 is located in the volute 32, and the volute 32 is connected to the housing 10. Further, the volute 32 may also be formed directly on the housing 10. In this embodiment, the air inlet of the volute 32 faces the smoke suction port 11, and the air outlet of the volute 32 faces the air inlet area 22 of the main fan 20.

The oil fume purification device also comprises a protective cover 53; the protection cover 53 includes a lower plate body 531 covering the lower side of the driving motor 40; and/or, the protection cover 53 further includes an upper plate 532 covering the upper side of the driving motor 40. In this embodiment, the upper plate 532 may prevent oil droplets from dropping onto the driving motor 40, and the lower plate 531 may reduce pollution caused by the oil smoke flowing upward contacting the driving motor 40. The protection effect can be achieved on the driving motor 40 by arranging the protection cover 53, and the driving motor 40 is prevented from being damaged by collision. Optionally, a shroud 53 is connected to the volute 32. In addition, a fixing bracket 54 is provided in the shield 53, and the driving motor 40 is mounted on the fixing bracket 54.

Referring to fig. 11, in an embodiment, the oil smoke purifying apparatus further includes a filter screen 60, and the filter screen 60 is connected to the booster fan 30. In this embodiment, the impeller of the booster fan 30 has a certain effect of filtering and separating oil stains, and can generate cutting, collision, condensation and other effects on smoke entering the range hood, so as to better separate oil stains in the smoke. And through set up the filter screen in the inboard of impeller or outside, can further strengthen greasy dirt filter capacity, reduce the greasy dirt and adhere to on the fan. In addition, filter screen 60 rotates along with booster fan 30, can constantly collide the flue gas at filter screen 60 pivoted in-process, makes the particulate matter in the flue gas for example grease etc. be intercepted by filter screen 60, and this collision process can fully filter the flue gas, strengthens the filter effect.

Optionally, the filter screen 60 is cylindrical and is sleeved with the booster fan 30. For crossflow blowers, filter 60 may extend into the interior of the crossflow blower, or filter 60 may be positioned around the periphery of booster blower 30. Should be the form of establishing of endotheca for the filter area of filter screen is bigger, and can intercept the greasy dirt in the flue gas all around. In addition, in other embodiments, the filter screen 60 may also be in the shape of a sheet or other shapes.

In one embodiment, the booster fan 30 is a crossflow fan having a mounting opening 33 at an end thereof; the filter screen 60 includes connection pad 61 and sets up filter cartridge 62 on the connection pad 61, filter cartridge 62 stretches into from the installing port in the booster fan 30, connection pad 61 shutoff installing port 33, so can prevent that the flue gas from running out from installing port 33. Moreover, the mounting port 33 is sealed by the structure on the filter screen 60, so that the structure of the crossflow blower can be simplified, and the number of components can be reduced. In addition, the connection plate 61 and the cross flow fan can be connected by a screw or a snap.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. An oil fume purification device, characterized by comprising:

the shell is provided with a smoke suction port, a smoke exhaust port and an air duct, and the air duct is provided with an air inlet section connected with the smoke suction port and an air outlet section connected with the smoke exhaust port;

the main fan is arranged at the air outlet section; and

the booster fan is arranged at the air inlet section and is a cross-flow fan;

the booster fan extends along the length direction of the smoking port; the air inlet section is equipped with a plurality of booster fan, it is a plurality of booster fan follows the length direction of smoking mouth arranges, wherein adjacent two the position corresponds between the booster fan the bottom or the top setting of main fan.

2. The lampblack purification device as claimed in claim 1, wherein the main fan is provided with an air inlet area, and the air outlet direction of the booster fan faces the air inlet area so as to guide the smoke to the air inlet area.

3. The lampblack purification device as claimed in claim 2, wherein the main fan is provided with a wind guiding area and at least two wind inlet areas, the wind inlet section is provided with at least two booster fans, one ends of the at least two booster fans close to each other correspond to the wind guiding area, and one ends of the at least two booster fans far away from each other are inclined towards different wind inlet areas so as to guide the smoke to the wind inlet areas.

4. The lampblack purification device as claimed in claim 3, wherein the lampblack purification device is a range hood, and the air guide area is located at the bottom of the main fan; alternatively, the first and second electrodes may be,

the oil fume purification device is an integrated stove, and the air guide area is positioned at the top of the main fan;

the left side and the right side of the main fan are respectively provided with one air inlet area, and the two booster fans are distributed along the length direction of the smoking port.

5. The lampblack purification device as claimed in claim 3, wherein the air guide area comprises a first guide surface and a second guide surface, and the first guide surface and the second guide surface are connected with each other and extend obliquely towards different air inlet areas respectively.

6. The lampblack purification device as claimed in claim 1, further comprising a driving motor connected with the booster fans, wherein the driving motor is arranged between two adjacent booster fans, and the driving motor is arranged corresponding to the bottom or the top of the main fan.

7. The fume purification apparatus according to claim 1, wherein the fume purification apparatus is a range hood or an integrated stove.

8. The lampblack purification device according to any one of claims 1 to 7, further comprising a filter screen, wherein the filter screen is connected with the booster fan.

9. The lampblack purification device as claimed in claim 8, wherein the filter screen is cylindrical and is sleeved with the booster fan.

10. The lampblack purification device as claimed in claim 9, wherein the end of the booster fan has a mounting port;

the filter screen includes the connection pad and sets up cartridge filter on the connection pad, the cartridge filter certainly the installing port stretches into in the supercharging fan, the connection pad shutoff the installing port.

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