CN217274384U - Fume exhaust fan - Google Patents

Abstract

The utility model discloses a range hood, include the box structure and be used for setting up the fan frame of fan system, the box structure sets up the below in the fan frame, the air intake, its characterized in that have been seted up to the bottom of box structure: a partition plate is arranged in the box body structure, the partition plate divides the box body structure into a space above the partition plate and a space below the partition plate, the air inlet is in fluid communication with the space below the partition plate, the partition plate is provided with an air outlet, and the space below the partition plate is in fluid communication with the space above the partition plate through the air outlet; the range hood still includes first filter screen and the second filter screen of interval arrangement, first filter screen and second filter screen constitute a set of filter screen subassembly that sets up on oil smoke flow path, air outlet department is provided with two sets of filter screen subassemblies at least, and two first filter screens upwards extend by two tip that the air outlet is relative respectively, and two second filter screens then set up the one side of keeping away from each other at first filter screen.

Description

Fume exhaust fan

Technical Field

The utility model relates to an oil smoke purifier, especially a range hood.

Background

Chinese cooking generates a large amount of oil smoke, and in order to keep the kitchen environment clean and human health, the range hood has become one of the indispensable kitchen household appliances in modern families. The range hood generally comprises a top suction type range hood and a side suction type range hood, and the top suction type range hood has more and more extensive application due to the advantages of being neat and light, small in occupied space, good in matching with a hanging cabinet, low in noise and the like.

The top-suction type range hood generally comprises a smoke collecting hood and a fan frame positioned on the smoke collecting hood, wherein a volute, an impeller and a motor for driving the impeller are installed in the fan frame, and an air inlet is arranged in the center of the smoke collecting hood and is directly connected with a high negative pressure area where the fan is located. The range hood has the problems of high wind speed and negative pressure at the air inlet of the smoke collecting hood and large negative pressure attenuation at the position far away from the air inlet. And this type of range hood can set up the filter screen in air intake department, and the oil smoke can filter the large granule (generally be greater than PM10) greasy dirt when passing through the filter screen, and inside reentrant range hood, then further filter remaining tiny particle greasy dirt through fan centrifugal force. If not set up the filter screen, then can lead to a large amount of large granule oil smoke to get into fan system, if the impeller of fan adheres to a large amount of oil smoke particles, then can destroy impeller dynamic balance, make range hood shake aggravation, the noise rises. And this kind of filter screen at present does not possess self-cleaning ability usually, uses for a long time and can block up the oil net, leads to the air inlet resistance grow, and then makes the smoking effect decline, so this kind of filter screen needs people regularly to tear down and washs, uses comparatively inconveniently.

For this reason, some technologies capable of self-cleaning the filter screen have been proposed, for example, as disclosed in the chinese patent application No. 202110599511.X of the present applicant, a first air inlet and a second air inlet of the range hood are respectively located at the left and right sides of the range hood, and the filter plate is vertically disposed in the cavity to filter the oil smoke, and the self-cleaning function is realized by the movement of the first filter plate and the second filter plate.

However, the above prior art has the following disadvantages: taking a left air inlet as an example (namely a first air inlet), a first filter plate is positioned on the right side of the first air inlet, so that the leftmost end of the left air inlet is far away from the filter plate, and the right end of the left air inlet is close to the filter plate, so that the negative pressure is unevenly distributed, the effect of the range hood from right to left of the left air inlet is further gradually weakened, and the phenomenon of oil smoke escape is easy to occur; secondly, the self-cleaning structure realized by the movement of the filter plate is complex.

In addition, for promoting the filter effect, have some filter screens on the market to be double-deck filter screen structure, the surface of this type of filter screen is clean easily usually, but the intermediate layer between the double-deck filter screen is blockked up by the greasy dirt easily, and washs comparatively difficultly.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to the not enough of above-mentioned prior art existence, provide a range hood, can improve filter effect and oil absorption cigarette effect.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a range hood, includes box structure and the fan frame that is used for setting up fan system, the box structure sets up the below at the fan frame, the air intake, its characterized in that have been seted up to the bottom of box structure:

a partition plate is arranged in the box body structure, the partition plate divides the box body structure into a space above the partition plate and a space below the partition plate, the air inlet is in fluid communication with the space below the partition plate, the partition plate is provided with an air outlet, and the space below the partition plate is in fluid communication with the space above the partition plate through the air outlet;

the range hood still includes first filter screen and the second filter screen of interval arrangement, first filter screen and second filter screen constitute a set of filter screen subassembly that sets up on oil smoke flow path, air outlet department is provided with two sets of filter screen subassemblies at least, and two first filter screens upwards extend by two tip that the air outlet is relative respectively, and two second filter screens then set up the one side of keeping away from each other at first filter screen.

Preferably, for further making the negative pressure of air outlet department even, ensure simultaneously that the oil smoke upwards flows after filtering, the first filter screen and the second filter screen of every group filter screen subassembly are arranged along left and right direction interval, and two first filter screens upwards extend by both ends about the air outlet respectively, seal between the front end of each first filter screen and second filter screen, seal between the rear end of each first filter screen and second filter screen, seal between the upper end of each first filter screen and second filter screen.

In order to facilitate the closing of the end parts of the filter screens, the front ends of the first filter screens and the second filter screens are abutted against the front side of the box body structure, and the rear ends of the first filter screens and the second filter screens are abutted against the rear side of the box body structure.

In order to wash the interlayer surface of the double-layer filter screen conveniently, the range hood further comprises a cleaning device for cleaning the filter screen assembly, the cleaning device comprises a liquid storage box for storing cleaning media, the liquid storage box is arranged above the air outlet, a first liquid outlet is formed in the bottom of the liquid storage box, a first nozzle is arranged on the lower side of the bottom of the liquid storage box and communicated with the liquid in the liquid storage box through the first liquid outlet, and the position of the first nozzle is corresponding to the position between the first filter screen and the second filter screen of each filter screen assembly.

For the windward side to first filter screen washs for being convenient for, the second liquid outlet has still been seted up to the liquid reserve tank bottom, the bottom downside of liquid reserve tank still is provided with the second nozzle, the position of second nozzle is kept away from one side of second filter screen corresponding to the first filter screen of every group filter screen subassembly.

In order to facilitate the closing of the upper end parts of the filter screens, the upper end parts of the first filter screen and the second filter screen are abutted against the bottom of the liquid storage tank.

In order to discharge the cleaned waste liquid conveniently, a first sewage draining port is formed in the position, located on the outer side of the air outlet, of the partition plate, a sewage draining pipe is arranged between the partition plate and the bottom of the box body structure, an oil cup is arranged at the bottom of the box body structure, the oil cup corresponds to the sewage draining pipe in position, and the first sewage draining port is communicated with the oil cup through the sewage draining pipe in a fluid mode.

In order to discharge the cleaned waste liquid conveniently, a second sewage draining outlet is formed in the position, corresponding to the oil cup, of the bottom of the box body structure.

In order to improve the oil smoke absorption effect at the left end and the right end, the air outlet corresponds to the middle of the air inlet in the left-right direction.

Preferably, the air inlet is adapted to a dual-burner stove, the air inlet is provided with two first air inlets and two second air inlets which are arranged at intervals left and right, a first chamber and a second chamber which are independent from each other are formed in a space below the partition plate, the first chamber corresponds to the first air inlet, and the second chamber corresponds to the second air inlet; the air outlet is also provided with a first air outlet and a second air outlet which are arranged at intervals left and right, the first air outlet communicates the first cavity with the space above the partition plate, and the second air outlet communicates the second cavity with the space above the partition plate; every air outlet department all is provided with two sets of filter screen subassemblies.

Preferably, in order to facilitate the arrangement of the filter screen and the partition plate, the range hood further comprises a lower box body and an intermediate box body positioned above the lower box body, the bottom of the intermediate box body is connected with the lower box body, the intermediate box body and the lower box body are mutually communicated through fluid, the lower box body is larger than the intermediate box body in size in the front-back direction, and the first air inlet and the second air inlet are formed in the bottom of the lower box body; the baffle is located the junction of middle box and lower box, the filter screen subassembly is located the middle box.

Compared with the prior art, the utility model has the advantages of: the air outlet is formed in the partition plate, so that oil smoke can uniformly pass through the partition plate from bottom to top, and the filtering effect can be improved by arranging the double-layer filter screen; the air outlet is arranged corresponding to the middle part of the air inlet, so that the uniform distribution of negative pressure at the air outlet can be further improved, and the oil smoke absorption effect of the left end and the right end is improved; through the belt cleaning device who sets up the filter screen subassembly, utilize fluid pressure top-down to wash the intermediate layer face of double-deck filter screen, improve the cleaning performance, avoid blockking up increase of service life.

Drawings

Fig. 1 is a schematic view of a range hood according to an embodiment of the present invention;

fig. 2 is a schematic view of a range hood according to an embodiment of the present invention (viewed from bottom to top, from a different perspective from fig. 1);

fig. 3 is a schematic view of the range hood according to the embodiment of the present invention (a part of the box structure is cut away when looking from back to front);

fig. 4 is a cross-sectional view (transverse cross-section) of a range hood according to an embodiment of the present invention;

fig. 5 is a sectional rear view (left and right direction section) of the hidden fan frame of the range hood according to the embodiment of the present invention;

FIG. 6 is an enlarged view of a portion I of FIG. 5;

fig. 7 is a partial sectional view of a cleaning device of a range hood according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar functions.

In the description of the present invention, it is to be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships illustrated in the drawings, which are based on the orientation or positional relationship shown in the drawings, and are intended to facilitate the description of the invention and to simplify the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, since the disclosed embodiments of the invention can be positioned in different orientations, these directional terms are intended to be illustrative and not to be construed as limiting, such as "upper" and "lower" are not necessarily limited to directions opposite to or coincident with the direction of gravity. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Referring to fig. 1 to 4, a range hood includes a box structure composed of an upper box 1, a middle box 2, and a lower box 3, and a fan frame 4, wherein the upper box 1 is disposed under the fan frame 4, and the length of the upper box in the left-right direction is greater than that of the fan frame 4. The upper box body 1, the middle box body 2 and the lower box body 3 are all hollow box bodies. The bottom of the rear side of the upper box body 1 is connected with the top of the middle box body 2, the bottom of the middle box body 2 is connected with the rear side of the lower box body 3, the upper box body 1 and the middle box body 2 are in fluid communication with each other, the middle box body 2 and the lower box body 3 are in fluid communication with each other, and the upper box body 1 is in fluid communication with the air frame 4. The sizes of the upper box body 1 and the lower box body 3 in the front and back direction are larger than that of the middle box body 2, the middle box body 2 is a box body with a thin structure in the front and back direction, namely, the sectional area is reduced when the lower box body 3 is transited to the middle box body 2, and the sectional area is increased when the middle box body 2 is transited to the upper box body 1. A fan system (not shown) is provided in the fan frame 4.

The front side of the fan frame 4 is positioned behind the front side of the upper box body 1. After the range hood is installed, the fan frame 4 is hidden on the back of the hanging cabinet, the front part of the upper box body 1 is flush with the door plate of the hanging cabinet, and the top of the upper box body 1 can be used as a bottom plate of the hanging cabinet, so that the matching with the whole appearance of the hanging cabinet with better consistency is formed.

In the present embodiment, the upper case 1 and the intermediate case 2 are integrally formed. The upper box body 1 or the middle box body 2 or the upper box body 1 and the middle box body 2 are not arranged, and the fan frame 4 is directly connected with the lower box body 3.

The bottom of the lower box 3 is provided with a first air inlet 51 and a second air inlet 52 which are arranged at intervals in the left-right direction. The lower casing 3 includes a top wall 31 and a bottom wall 32 spaced up and down, a front side wall 33 and a rear side wall 34 spaced front and rear, and a left side wall 35 and a right side wall 36 spaced left and right. Wherein, the rear end of the top wall 31 extends to the bottom front side of the middle box body 2, the front side wall 33 is connected between the front end parts of the top wall 31 and the bottom wall 32, the rear side wall 34 is connected between the rear side of the middle box body 2 and the rear end part of the bottom wall 32, the left side wall 35 is connected between the left end parts of the top wall 31, the bottom wall 32, the front side wall 33 and the rear side wall 34, and the right side wall 36 is connected between the right end parts of the top wall 31, the bottom wall 32, the front side wall 33 and the rear side wall 34. Preferably, the top wall 31 and the bottom wall 32 are horizontal, and the front side wall 33, the rear side wall 34, the left side wall 35 and the right side wall 36 are vertical, so that the lower casing 3 is a rectangular parallelepiped. The first air inlet 51 and the second air inlet 52 are opened in the bottom wall 32. The top wall 31 can be used for placing objects.

The lower casing 3 is provided inside with a first baffle 37 and a second baffle 38, the first baffle 37 and the second baffle 38 being arranged at a left-right interval and each extending from the front side wall 33 to the rear side wall 34 rearward and from the top wall 31 to the bottom wall 32 downward. The first intake vent 51 is located between the first baffle 37 and the left sidewall 35, and the second intake vent 52 is located between the second baffle 38 and the right sidewall 36. A first baffle 37 and a second baffle 38 are connected between the top wall 31 and the bottom wall 32, respectively. The first baffle 37 and the second baffle 38 may be parallel to the left side wall 35 (right side wall 36), respectively.

The range hood further comprises a partition 7, wherein the partition 7 is preferably flush with the top wall 31 of the lower box body 3 and extends from the rear end part of the top wall 31 to the rear side wall 34, namely, is positioned at the joint of the middle box body 2 and the lower box body 3. The space between the front side wall 33, the left side wall 35, the first baffle 37, the rear side wall 34, the top wall 31 and the partition 7 forms a first chamber Q1 for collecting the smoke, and the space between the front side wall 33, the right side wall 36, the second baffle 38, the rear side wall 34, the top wall 31 and the partition 7 forms a second chamber Q2 for collecting the smoke. Alternatively, the partition 7 may be lower than the top wall 31 or higher than the top wall 31, but it is necessary to ensure that the space between the front end of the partition 7 and the front side of the box structure is closed, and the space between the rear end of the partition 7 and the rear side of the box structure is closed, so that the space below the partition 7 and the space above the partition 7 are separated by the partition 7 inside the box structure, and fluid communication can be achieved only through the two air outlets described below.

The partition board 7 is provided with a first air outlet 71 and a second air outlet 72, the first air outlet 71 and the second air outlet 72 are arranged at left and right intervals, wherein the first air outlet 71 corresponds to the first cavity Q1 to communicate the first cavity Q1 with the middle box body 2 and the upper box body 1 in a fluid manner, and the second air outlet 72 corresponds to the second cavity Q2 to communicate the first cavity Q1 with the middle box body 2 and the upper box body 1 in a fluid manner.

The range hood further comprises a first filter screen 61 and a second filter screen 62, the first filter screen 61 and the second filter screen 62 form a group of filter screen assemblies arranged on the oil smoke flow path, and the first filter screen 61 and the second filter screen 62 are arranged at intervals along the left-right direction. Two groups of filter screen components are respectively arranged at each air outlet. The two sets of filter screen assemblies corresponding to the first air outlet 71 extend upward from the left and right ends of the first air outlet 71, respectively, and the two sets of filter screen assemblies corresponding to the second air outlet 72 extend upward from the left and right ends of the second air outlet 72, respectively. The front ends of the first filter screen 61 and the second filter screen 62 corresponding to each air outlet are sealed, and the rear ends of the first filter screen 61 and the second filter screen 62 corresponding to each air outlet are sealed, as shown in this embodiment, the front ends of the first air outlet 71 and the second air outlet 72 extend to the rear end part of the top wall 31, the rear ends of the first air outlet 71 and the second air outlet 72 extend to the rear side wall 34, the first filter screen 61 and the second filter screen 62 are arranged in the middle box body 2, the front ends are abutted against the front side of the middle box body 2, and the rear ends are abutted against the rear side of the middle box body 2.

The first filter screens 61 extend upward from the left and right edges (or the positions close to the edges) of the corresponding air outlets, and the second filter screens 62 are located on the sides, away from each other, of the two first filter screens 61 corresponding to each air outlet. The oil smoke flows upwards from each air outlet, is filtered by each group of filter screen components and upwards enters the fan frame 4 through the upper box body 1.

The range hood further comprises a cleaning device for cleaning the first filter screen 61 and the second filter screen 62. Referring to fig. 3, 5-7, the cleaning device includes liquid storage tanks 10, each air outlet corresponds to one liquid storage tank 10, and each liquid storage tank 10 is disposed on two sets of filter screen assemblies at each air outlet. The upper end of the filter screen that every air outlet corresponds can with the bottom butt of liquid reserve tank 10, and the upper end of each filter screen passes through liquid reserve tank 10 from this and seals to preceding, back, the upper end of each filter screen all are the encapsulated situation, avoid upwards getting into fan system through unfiltered oil smoke in the position that does not set up the filter screen. The liquid storage tank 10 is used for storing cleaning media such as water, cleaning agents and the like. The liquid inlet 11 can be arranged on the structure of the tank body, such as the top of the tank body 1, the liquid inlet 11 corresponds to the position of the liquid storage tank 10 and is communicated with the liquid, and the liquid inlet 11 can be connected to an external cleaning medium source, such as a water tap, through a conduit and the like. The cleaning medium may be stored in the tank 10 in advance or may be refilled when cleaning is required.

First liquid outlet 1011 and second liquid outlet 1012 have been seted up with the position that every group filter screen subassembly corresponds in the bottom of liquid reserve tank 10, and wherein first liquid outlet 1011 is corresponding to between the first filter screen 61 and the second filter screen 62 of every group filter screen subassembly, and second liquid outlet 1012 is corresponding to one side (windward side, the one side towards the oil smoke) that second filter screen 62 was kept away from to first filter screen 61. When it is necessary to store the cleaning medium in advance, valves (not shown) may be provided at the first liquid outlet 1011 and the second liquid outlet 1012 so as to control the opening and closing of the respective liquid outlets. Each of the first liquid outlet 1011 and the second liquid outlet 1012 may be provided with at least two liquid outlets, which are arranged at intervals in the front-rear direction, so that each of the filters can be cleaned in all directions. A first nozzle 1041 and a second nozzle 1042 are arranged at the bottom lower side of the liquid storage tank 10, wherein the number and the position of the first nozzle 1041 correspond to the first liquid outlet 1011, the first nozzle 1041 is communicated with the liquid in the liquid storage tank 10 through the first liquid outlet 1011, the number and the position of the second nozzle 1042 correspond to the second liquid outlet 1012, and the second nozzle 1042 is communicated with the liquid in the liquid storage tank 10 through the second liquid outlet 1012.

A booster pump 103 is arranged in the liquid storage tank 10 and is used for pumping the cleaning medium into the liquid storage tank 10 through the liquid inlet 11. The booster pump 103 is started, the valve at each liquid outlet is opened, the cleaning medium is sprayed between the first filter screen 61 and the second filter screen 62 through the first nozzle 1041 to wash the oil stains between the interlayers of the first filter screen 61 and the second filter screen 62, and the cleaning medium flows from top to bottom under the influence of gravity to clean the whole interlayer surface (the surface of the first filter screen 61 and the surface of the second filter screen 62 close to each other). When the second nozzle 1042 is opened, the windward side of the first filter 61 can also be cleaned.

Alternatively, the second outlet 1012 and the second nozzle 1042 may not be provided.

With the above structure, each air outlet corresponds to the middle of the corresponding air inlet, where the corresponding middle position means that the projection of the air outlet on the left-right longitudinal plane is located within the projection of the air inlet on the left-right longitudinal plane, and is preferably located at the middle position in the left-right direction. Therefore, the negative pressure distribution at the left end and the right end of each air inlet can be equal, and the oil smoke absorption effect at the left end and the right end is improved. The filter screen subassembly is vertical arrangement's double-deck filter screen, and is provided with the filter screen subassembly simultaneously in the left/right both sides of each air outlet, so sets up the increase that can realize draught area, and each air outlet department negative pressure distributes evenly to promote the smoking effect. Alternatively, the filter screen assemblies can also be arranged on the front side and the rear side of each air outlet.

First drain 73 has been seted up to the position that lies in each air outlet left and right sides on baffle 7, is provided with blow off pipe 100 between the diapire 32 of baffle 7 and lower box 3, and the bottom of lower box 3 is provided with oil cup 200, and oil cup 200 extends about, corresponds with blow off pipe 100's position. The soil pipe 100 is open at both upper and lower ends thereof and has a hollow structure so as to fluidly communicate the first soil outlet 73 with the oil cup 200. A second drain 321 can be formed on the bottom wall 32 and corresponds to the oil cup 200, so that the cleaned waste liquid flowing down from the filter screens and the movable plates can enter the oil cup 200 through the second drain 321.

In the above embodiment, two air inlets and two air outlets are taken as an example, alternatively, only one air inlet and only one corresponding air outlet may be provided.

The term "fluid communication" as used herein refers to a spatial relationship between two components or portions (hereinafter collectively referred to as a first portion and a second portion), i.e., a fluid (gas, liquid or a mixture of both) can flow along a flow path from the first portion or/and be transported to the second portion, and may be directly communicated between the first portion and the second portion, or indirectly communicated between the first portion and the second portion via at least one third member, which may be a fluid passage such as a pipe, a channel, a duct, a flow guide, a hole, a groove, or a chamber allowing the fluid to flow therethrough, or a combination thereof.

Claims (11)

1. The utility model provides a range hood, includes box structure and fan frame (4) that are used for setting up fan system, the box structure sets up in the below of fan frame (4), the air intake, its characterized in that have been seted up to the bottom of box structure:

a partition plate (7) is arranged in the box body structure, the partition plate (7) divides the box body structure into a space above the partition plate (7) and a space below the partition plate (7), the air inlet is communicated with the space below the partition plate (7) through fluid, the partition plate (7) is provided with an air outlet, and the space below the partition plate (7) is communicated with the space above the partition plate (7) through fluid through the air outlet;

range hood still includes first filter screen (61) and second filter screen (62) of interval arrangement, first filter screen (61) and second filter screen (62) constitute a set of filter screen subassembly that sets up on oil smoke flow path, air outlet department is provided with two sets of filter screen subassemblies at least, and two first filter screens (61) are upwards extended by two tip that the air outlet is relative respectively, and two second filter screens (62) then set up the one side of keeping away from each other in first filter screen (61).

2. The range hood of claim 1, wherein: first filter screen (61) and second filter screen (62) of every group filter screen subassembly are arranged along left right direction interval, and two first filter screens (61) are upwards extended by the left and right ends of air outlet respectively, seal between the front end of each first filter screen (61) and second filter screen (62), seal between the rear end of each first filter screen (61) and second filter screen (62), seal between the upper end of each first filter screen (61) and second filter screen (62).

3. The range hood of claim 2, wherein: the front ends of the first filter (61) and the second filter (62) are abutted against the front side of the box structure, and the rear ends of the first filter (61) and the second filter (62) are abutted against the rear side of the box structure.

4. The range hood according to any one of claims 1 to 3, wherein: range hood still carries out abluent belt cleaning device including being used for carrying out the filter screen subassembly, belt cleaning device is including liquid reserve tank (10) that is used for saving cleaning medium, liquid reserve tank (10) set up the top at the air outlet, first liquid outlet (1011) have been seted up to liquid reserve tank (10) bottom, the bottom downside of liquid reserve tank (10) is provided with first nozzle (1041), first nozzle (1041) is through first liquid outlet (1011) and the interior fluid intercommunication of liquid reserve tank (10), the position of first nozzle (1041) is corresponding to between first filter screen (61) and second filter screen (62) of every group filter screen subassembly.

5. The range hood of claim 4, wherein: a second liquid outlet (1012) is further formed in the bottom of the liquid storage box (10), a second nozzle (1042) is further arranged on the lower side of the bottom of the liquid storage box (10), and the position of the second nozzle (1042) corresponds to one side, away from the second filter screen (62), of the first filter screen (61) of each group of filter screen assemblies.

6. The range hood of claim 4, wherein: the upper ends of the first filter (61) and the second filter (62) are in contact with the bottom of the liquid storage tank (10).

7. The range hood of claim 4, wherein: first drain (73) have been seted up to the position that lies in the air outlet outside on baffle (7), be provided with between the bottom of baffle (7) and box structure blow off pipe (100), the bottom of box structure is provided with oil cup (200), oil cup (200) correspond with the position of blow off pipe (100), blow off pipe (100) are with fluid intercommunication between first drain (73) and oil cup (200).

8. The range hood of claim 4, wherein: and a second sewage draining outlet (321) is formed in the position, corresponding to the oil cup (200), at the bottom of the box body structure.

9. A range hood according to any one of claims 1 to 3, wherein: the air outlet corresponds to the middle part of the air inlet in the left-right direction.

10. The range hood according to any one of claims 1 to 3, wherein: the air inlet is provided with a first air inlet (51) and a second air inlet (52) which are arranged at intervals left and right, a first chamber (Q1) and a second chamber (Q2) which are independent of each other are formed in the space below the partition plate (7), the first chamber (Q1) corresponds to the first air inlet (51), and the second chamber (Q2) corresponds to the second air inlet (52); the air outlet is also provided with a first air outlet (71) and a second air outlet (72) which are two and are respectively arranged at left and right intervals, the first air outlet (71) is used for communicating the first chamber (Q1) with the space above the partition board (7), and the second air outlet (72) is used for communicating the second chamber (Q2) with the space above the partition board (7); every air outlet department all is provided with two sets of filter screen subassemblies.

11. The range hood of claim 10, wherein: the range hood further comprises a lower box body (3) and an intermediate box body (2) positioned above the lower box body (3), the bottom of the intermediate box body (2) is connected with the lower box body (3), the intermediate box body (2) and the lower box body (3) are mutually in fluid communication, the size of the lower box body (3) in the front-back direction is larger than that of the intermediate box body (2), and the first air inlet (51) and the second air inlet (52) are formed in the bottom of the lower box body (3); baffle (7) are located the junction of middle box (2) and lower box (3), the filter screen subassembly is located middle box (2).

Images