CN220152807U

CN220152807U - Fume exhaust fan

Info

Publication number: CN220152807U
Application number: CN202320880615.2U
Authority: CN
Inventors: 罗力; 张月环; 王春旭; 蒋济武; 何新奎
Original assignee: Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
Current assignee: Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
Priority date: 2023-04-14
Filing date: 2023-04-14
Publication date: 2023-12-08
Anticipated expiration: 2033-04-14

Abstract

The utility model discloses a range hood, which comprises a fume collecting hood and a wind curtain device, wherein a fume collecting cavity is formed in the fume collecting hood, a fume suction port communicated with the fume collecting cavity is formed in the fume collecting hood, a mounting cavity mutually independent from the fume collecting cavity is formed in the fume collecting hood, an air inlet and an air outlet which are respectively communicated with the mounting cavity are formed in the fume collecting hood, the wind curtain device comprises a fan component and a purifying component which are connected with the fume collecting hood, the fan component is accommodated in the mounting cavity, the purifying component comprises a filtering module and a smell removing module, the filtering module is in butt joint communication with the smell removing module, external airflow entering through the air inlet is driven by the fan component, flows through the fan component, is filtered by the filtering module and is purified by the smell removing module, and finally, the downward air curtain airflow is blown out by the air outlet, and the air curtain airflow is at least partially positioned in front of the fume suction port. The technical scheme of the utility model can effectively reduce the risk of sucking the oil smoke in the use process of the cooker hood.

Description

Fume exhaust fan

Technical Field

The utility model relates to the technical field of kitchen appliances, in particular to a range hood.

Background

In the cooking process, when the oil smoke rises, partial oil smoke can surge towards the front of the range hood, namely towards the direction of a cooker, so that the cooker can suck the oil smoke in the cooking process, the cooking experience of the cooker can be affected, and the health of the cooker can be affected for a long time.

Disclosure of Invention

The embodiment of the utility model provides a range hood, which can effectively reduce the risk of sucking oil smoke in the use process of the range hood for a cooking person.

In an embodiment of the present utility model, the range hood includes:

the smoke collecting hood is internally provided with a smoke collecting cavity, a smoke sucking port communicated with the smoke collecting cavity is formed in the smoke collecting hood, an installation cavity mutually independent of the smoke collecting cavity is also formed in the smoke collecting hood, and the smoke collecting hood is provided with an air inlet and an air outlet which are respectively communicated with the installation cavity; and

the air curtain device comprises a fan assembly and a purification assembly, wherein the fan assembly is connected with the fume collecting hood, the fan assembly is accommodated in the installation cavity, the purification assembly comprises a filtering module and a smell purifying module, and the filtering module is in butt joint communication with the smell purifying module;

under the drive of the fan assembly, the external air flow entering through the air inlet flows through the fan assembly, is filtered by the filtering module and is purified by the odor purifying module, and finally the air curtain air flow facing downwards is blown out of the air outlet, and is at least partially positioned in front of the smoking opening.

The range hood comprises the fume collecting hood and the air curtain device, wherein the air curtain device comprises a fan assembly and a purification assembly, air curtain airflow is formed through the air curtain device, and the air curtain airflow is used for blocking the fume, so that the health influence on a cooker caused by the fume inhalation of the cooker is avoided. Wherein, purification module includes filtration module and odor removal module, and realize filtering and purifying the air current that gets into by the air intake through filtration module and odor removal module, play impurity filtration and get rid of the effect of peculiar smell, thereby make the air curtain air current of final production not receive the pollution, improve the effect of air curtain air current, improve cooking person's use and experience, in addition, when the fan subassembly holding of air curtain device is in the installation cavity of collection petticoat pipe, need not to occupy the space beyond the installation cavity, make range hood volume more exquisite, and can hide the fan subassembly in the collection petticoat pipe, improve external aesthetic property.

In some embodiments, the filter module and the odor removal module are both disposed at an air inlet of the fume collection hood.

In some embodiments, the filter module and the odor removal module are both arranged on the outer wall surface of the fume collecting hood and cover the air inlet.

In some embodiments, the fume collecting hood comprises a front plate, a back plate arranged opposite to the front plate, a side plate connected between the front plate and the back plate, and a top plate connected to the upper side of the side plate;

the front plate, the back plate, the side plates and the top plate are enclosed to define the smoke gathering cavity and the mounting cavity, the air inlet is formed in the wall surface of the top plate, and the air outlet and the smoking opening are respectively formed in the front wall surface of the front plate.

In some embodiments, the filtering module and the odor removing module are both arranged on the outer wall surface of the fume collecting hood and cover the air outlet.

In some of these embodiments, the purification assembly includes a connection structure to which the filtration module and the odor elimination module are connected, the connection structure being connected to the fume collection hood.

In some embodiments, the connecting structure comprises a fixing seat with a hollowed-out structure and a cover body with a hollowed-out structure, wherein one side, away from the cover body, of the fixing seat is connected with the fume collecting hood, and the fixing seat and the cover body enclose to define a containing cavity for containing the filtering module and the odor purifying module.

In some embodiments, the fan assembly comprises a fan and a fan housing received in the mounting cavity, the fan housing comprises an air inlet and an air outlet, the air inlet is communicated with an air outlet of the fan, the air outlet is communicated with the air outlet, and the filtering module and the odor purifying module are both received in the fan housing.

In some embodiments, the wind cavity seat comprises a main body part and a transition part, wherein the main body part is in butt joint communication with the transition part, and an included angle is formed between the extending direction of the main body part and the extending direction of the transition part;

the air inlet is formed in the transition part, the main body part is arranged in an extending mode along the left-right direction of the fume collecting hood, the air supply opening is formed in one side, far away from the transition part, of the main body part, and the air supply opening and the air outlet extend along the extending direction of the main body part;

one of the filter module and the odor removing module is matched in the transition part, and the other one is matched in the main body part.

In some embodiments, the air cavity seat comprises a seat body with an opening and a cover plate covered at the opening, the air inlet is arranged on the seat body, the air supply outlet is arranged on the cover plate, and the filtering module and the odor purifying module are both connected in the seat body.

In some embodiments, at least two positioning ribs are convexly arranged on the inner side wall of the seat body, the filter module comprises a first installation block, a first positioning groove is concaved on the outer surface of the first installation block, and one positioning rib penetrates through the first positioning groove;

the odor removing module comprises a second installation block, a second positioning groove is recessed in the outer surface of the second installation block, and the other positioning rib penetrates through the second positioning groove.

In some embodiments, the filtration module comprises a primary filtration module and a secondary filtration module, the primary filtration module being in abutting communication with the secondary filtration module and being upstream of the secondary filtration module in the direction of airflow;

the odor removing module is in butt joint communication with one side of the primary filtering module, which is away from the secondary filtering module, or one side of the secondary filtering module, which is away from the primary filtering module.

In some of these embodiments, the primary filtration module comprises a first screen comprising a coarse cotton layer;

and/or, the secondary filter module comprises a second filter screen, and the second filter screen comprises a fine filter cotton layer.

In some of these embodiments, the odor elimination module comprises an odor elimination screen comprising an activated carbon layer.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

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

FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;

FIG. 3 is a partial enlarged view at B in FIG. 2;

fig. 4 is an exploded view of the range hood of fig. 1;

FIG. 5 is a schematic view of a purge assembly of the air curtain apparatus of FIG. 1;

fig. 6 is a schematic view of another embodiment of a range hood according to the present utility model;

FIG. 7 is a cross-sectional view taken at C-C of FIG. 6;

FIG. 8 is a partial enlarged view at D in FIG. 7;

FIG. 9 is an exploded view of the plenum housing and purge assembly of FIG. 8;

fig. 10 is a schematic structural view of a seat body of the wind chamber seat shown in fig. 8.

Reference numerals illustrate:

100. a range hood; 10. a tobacco machine main body; 11. a fan cover; 13. a fume collecting hood; 13a, a smoking mouth; 13b, an air inlet; 13c, an air outlet; 131. a front plate; 133. a back plate; 135. a side plate; 137. a top plate; 30. an air curtain device; 31. a blower; 31a, an air outlet; 32. a fan assembly; 33. a wind cavity seat; 33a, an air inlet; 33b, an air supply port; 331. a main body portion; 333. a transition section; 335. a seat body; 3351. positioning ribs; 3351a, second connection portion; 337. a cover plate; 3371. a plate main body; 3373. a wind delivery plate; 35. a purification assembly; 351. a filtration module; 351a, first positioning grooves; 3511. a primary filtration module; 3513. a secondary filtration module; 353. an odor removal module; 353a, a second positioning groove; 355. a connection structure; 3551. a fixing seat; 3553. a cover body; 50. a first seal; 70. and a second seal.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the following detailed description of the embodiments of the present utility model will be given with reference to the accompanying drawings.

When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the utility model. Rather, they are merely examples of apparatus and methods consistent with some aspects of the utility model as detailed in the accompanying claims.

In the description of the present utility model, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. Furthermore, in the description of the present utility model, unless otherwise indicated, "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description presented herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 2, in an embodiment of the present utility model, a range hood 100 is provided, the range hood 100 includes a fan housing 11, a fume collecting hood 13 and an air curtain device 30, the fume collecting hood 13 is connected to the fan housing 11 below the fan housing 11, a fume exhausting cavity is formed in the fan housing 11, a fume collecting cavity communicated with the fume exhausting cavity is formed in the fume collecting hood 13, a fume suction opening 13a communicated with the fume collecting cavity is formed in the fume collecting hood 13, a mounting cavity independent from the fume collecting cavity is formed in the fume collecting hood 13, an air inlet 13b and an air outlet 13c respectively communicated with the mounting cavity are formed in the fume collecting hood 13, the air curtain device 30 includes a fan assembly 32 and a purifying assembly 35 connected with the fume collecting hood 13, the fan assembly 32 is accommodated in the mounting cavity, the purifying assembly 35 includes a filtering module 351 and a smell removing module 353, the filtering module 351 and the smell removing module 353 are in butt joint connection, the air flow entering through the air inlet 13b via the air inlet, the filtering module 351 is filtered by the filtering module and the smell removing module and finally the smell removing module is blown out from the air flow towards at least a part of the air outlet 13a located in front of the air curtain 13. The range hood 100 may further include a decorative cover (not shown), and the cover may cover the fan cover 11, so that a cooker may view the range hood 100 from the outside, and may protect the fan cover 11.

The fume collecting hood 13 is communicated with the room through a fume suction opening 13a and is generally suspended above a kitchen range so as to suck fume into a fume collecting cavity, and then the fume is discharged to the outside through a fume discharge opening of the fume discharging cavity of the fan cover 11. Of course, a smoke exhaust fan is arranged in the smoke exhaust cavity to enable air flow to flow from the smoke exhaust port 13a to the smoke exhaust port. It will be appreciated that the range hood body 10 functions as a conventional range hood 100.

The kitchen range can generate a lampblack area when in work, the air curtain airflow can be positioned between the lampblack area and a cooker to block lampblack in the lampblack area, and the specific mode can be that the air curtain airflow is positioned in front of the smoke suction opening 13a, namely positioned between the smoke suction opening 13a and the cooker and closer to one side of the cooker to realize partial blocking, and at the moment, the air outlet 13c is formed in the front surface of the smoke collecting cover 13; the air curtain airflow can encircle and encircle the oil smoke area and is closer to one side of a cooking person so as to realize annular blocking, and the air outlet 13c is formed on the surfaces of the two sides of the fume collecting hood 13 except the front surface of the fume collecting hood 13, so that an annular air curtain is formed, and the effect of the air curtain airflow is improved. The generation principle of the air curtain airflow is as follows: under the drive of the fan assembly 32, the air flow in the kitchen can be driven by the fan assembly 32 to blow out the air curtain air flow towards the lower direction from the air outlet 13c, and the air curtain air flow is at least partially positioned in front of the smoking opening 13a, so that the air curtain air flow can block the oil smoke, and the oil smoke is prevented from approaching the face of a cooker, so that the health influence caused by the oil smoke sucked by the cooker is prevented.

It is understood that during cooking, the edible oil and food undergo a series of chemical reactions such as oxidation, pyrolysis, polymerization, etc. at high temperature, evaporating a large amount of organic fumes, wherein part of the decomposition products are dispersed into the air in the form of oil mist to form oil fumes. The oil fume includes edible oil and its heated decomposed or cracked product, and includes the products of physical and chemical reaction of protein, polymer and other seasoning in food, and is one kind of matter in gas, liquid and solid state. Generally, the definition is that particulate matter emissions (Particulate Matter Emissions) consisting of liquid and solid in fume emissions are abbreviated as PME, volatile organic compounds (Volatile Organic Compounds Emissions) are emitted, and the particulate matter emissions are abbreviated as VOCs, and fume is composed of the two substances. Since the air flow sucked by the fan 31 in the air curtain device 30 is the air flow in the kitchen, the air flow in the kitchen is inevitably polluted by the oil smoke, so that the air curtain air flow finally blown out from the air outlet 13c is polluted, and a user can suck the polluted air curtain air flow, so that the air curtain device 30 can not work as expected. The purifying component 35 is arranged, and the filtering module 351 and the odor purifying module 353 in the purifying component 35 are used for filtering and purifying the air flow entering from the air inlet 13b, so that the effects of filtering impurities and removing peculiar smell are achieved, and the finally generated air curtain air flow is not polluted.

The range hood 100 of the technical scheme of the utility model comprises a fume collecting hood 13 and a wind curtain device 30, wherein the wind curtain device 30 comprises a fan assembly 32 and a purification assembly 35, air curtain airflow is formed through the wind curtain device 30, and the air curtain airflow is used for blocking oil smoke so as to avoid the health influence on a cooker caused by the fact that the cooker sucks the oil smoke. Wherein, the purification module 35 includes filtration module 351 and odor removal module 353, and realize filtering and purifying the air current that gets into by air intake 13b through filtration module 351 and odor removal module 353, play impurity filtration and get rid of the effect of peculiar smell, thereby make the air curtain air current that finally generates not receive the pollution, improve the effect of air curtain air current, improve the cooking person's use experience, in addition, when the fan subassembly 32 holding of air curtain device 30 is in the installation cavity of collection petticoat pipe 13, need not to occupy the space outside the installation cavity, make range hood 100 volume more exquisite, and can hide fan subassembly 32 in collection petticoat pipe 13, improve external aesthetic property.

Further, referring to fig. 2 to 3, the filtering module 351 and the deodorizing module 353 are disposed at the air inlet 13b of the fume collecting hood 13. The filtering module 351 and the smell removing module 353 are arranged at the air inlet 13b of the fume collecting hood 13, so that the outside air flow is filtered by the filtering module 351 and purified by the smell removing module 353, and then purified air flow is formed, and the condition that the outside air flow is accumulated on the fan 31 of the fan assembly 32 when passing through the fan assembly 32 is avoided, so that the service life of the fan assembly 32 can be prolonged.

With continued reference to fig. 2 to 3, in an embodiment, the filtering module 351 and the deodorizing module 353 are disposed on the outer wall surface of the fume collecting hood 13 and cover the air inlet 13b.

In this embodiment, in order to facilitate the operations such as installation, replacement, maintenance, and repair of the purification component 35 by a user or a worker, the filtering module 351 and the odor removing module 353 are disposed on the outer wall surface of the fume collecting hood 13 and cover the air inlet 13b, so that the user or the worker can directly operate the filtering module 351 and the odor removing module 353 outside, and the user can be prompted to periodically replace the purification component 35 under the convenient operation, so as to ensure the long-term purification effect. Meanwhile, when the filtering module 351 and the smell removing module 353 are both arranged on the outer wall surface of the fume collecting hood 13, the space in the installation cavity can be prevented from being occupied, so that the volume of the fan 31 of the fan assembly 32 can be larger, and the forming effect of the air quantity and the air curtain air flow is improved.

Wherein, filter module 351 and the outer wall face that the smell-removing module 353 all located collection petticoat pipe 13 can replace and all locate collection petticoat pipe 13's inner wall face and cover air intake 13b, namely set up on the inner chamber face of installation cavity, so can hide filter module 351 and smell-removing module 353 in the installation cavity for the user can't directly watch filter module 351 and smell-removing module 353 in the external world, improves the external aesthetic property of range hood 100.

With continued reference to fig. 4, the fume collecting hood 13 includes a front plate 131, a back plate 133 opposite to the front plate 131, a side plate 135 connected between the front plate 131 and the back plate 133, and a top plate 137 connected to the upper side of the side plate 135, wherein the front plate 131, the back plate 133, the side plate 135, and the top plate 137 enclose to define a fume collecting cavity and an installation cavity, the air inlet 13b is formed on a wall surface of the top plate 137, and the air outlet 13c and the fume suction opening 13a are respectively formed on a front wall surface of the front plate 131. Wherein, collection petticoat pipe 13 has left side, middle part and right side along left and right directions, and collection petticoat pipe 13's left side department is formed with the installation cavity with the inner space of right side department, and wherein fan cover 11 sets up in the middle side, i.e. collection petticoat pipe 13's middle side is formed with draws in the cigarette chamber, and should draw in the cigarette chamber and be linked together with the smoke discharging cavity of fan cover 11. The air inlet 13b is formed on the wall surface of the top plate 137, the air outlet 13c is formed on the front wall surface of the front plate 131, so that air flow can flow in from the air inlet 13b of the top plate 137 and then be directly blown out from the air outlet 13c of the front wall surface of the front plate 131, and the air curtain air flow can be located between a cooking person and the smoke suction port 13a, so that the cooking fume is prevented from entering the cooking person. In addition, with continued reference to fig. 3, a gap between the top plate 137 of the fume collecting hood 13 and the blower 31 of the blower assembly 32 is provided with a first seal 50 to seal the gap to prevent impurities from entering the blower 31 or the fume collecting hood 13 from the gap, and specifically, the first seal 50 may be a sealing ring, a sealing strip or a sealing gasket, which is not limited herein.

Alternatively, in order to facilitate the operations such as installation, replacement, maintenance, etc. of the purification assembly 35 by a user or a worker, the filtering module 351 and the deodorizing module 353 are both provided on the outer wall surface of the fume collecting hood 13 and cover the air outlet 13c. Likewise, the user or staff member can directly operate the filtering module 351 and the deodorizing module 353 outside. In addition, when the air outlet 13c is formed in the front plate 131 of the fume collecting hood 13, the air outlet is closer to the user, and convenience in operation of the user can be further improved.

Referring to FIG. 3, in one embodiment, the purification assembly 35 includes a connection structure 355, the filter module 351 and the odor removal module 353 are connected to the connection structure 355, and the connection structure 355 is connected to the hood 13.

In this embodiment, compared with the installation mode that the filter module 351 and the odor purifying module 353 are directly connected with the air inlet 13b or the air outlet 13c in a butt joint manner, the filter module 351 and the odor purifying module 353 are connected with the inner wall surface or the outer wall surface of the fume collecting hood 13 through the connecting structure 355, so that the connection stability between the filter module 351 and the odor purifying module 353 and the fume collecting hood 13 can be improved. Specifically, the connection form of the connection structure 355 and the fume collecting hood 13 can be an integrated structure or a split structure, and when the connection structure 355 and the fume collecting hood 13 are integrated into a whole, the connection structure 355 and the fume collecting hood 13 can be fixedly connected in a punching integrated mode; in the case of a split structure, the connection structure 355 and the fume collecting hood 13 can be connected in a fastening, gluing or threaded connection manner.

Referring to fig. 5, the connection structure 355 includes a fixing base 3551 having a hollow structure and a cover 3553 connected to the fixing base 3551 and having a hollow structure, wherein one side of the fixing base 3551 away from the cover 3553 is connected to the smoke collecting hood 13, and the fixing base 3551 and the cover 3553 enclose to define a receiving cavity for receiving the filtering module 351 and the deodorizing module 353. The fixing base 3551 mainly plays a role of bearing the filter module 351 and the odor purifying module 353 and can be connected with the cover 3553 to enclose the accommodating cavity, so that the filter module 351 and the odor purifying module 353 can be stably accommodated in the accommodating cavity, and stability is guaranteed. Because the shape of the air inlet 13b and the air outlet 13c can be round, the projections of the fixing base 3551 and the cover 3553 on the outer wall surface of the fume collecting hood 13 are round to match the shape of the air inlet 13b or the air outlet 13c, and meanwhile, the fixing base 3551 and the cover 3553 can be regular in shape and are convenient to form and manufacture, and of course, the projections of the fixing base 3551 and the cover 3553 on the outer wall surface of the fume collecting hood 13 can be square or rectangular. The fixing seat 3551 and the cover 3553 may be detachably connected or fixedly connected, and may be in a threaded connection or a snap connection manner when configured to be detachably connected, so that when the filter module 351 or the odor removal module 353 needs to be replaced, the filter module 351 or the odor removal module 353 may be taken out from the accommodating cavity and replaced.

Specifically, under the lid 3553 is the fretwork structure, can be that lid 3553 surface is formed with the grid structure that carries out the check to the foreign matter to prevent that the foreign matter from entering into the installation cavity of collection petticoat pipe 13, wherein grid structure includes a plurality of grids, and when the projection of lid 3553 on the outer wall surface of collection petticoat pipe 13 all is circular, a plurality of grids can be circular array distribution, and can be formed with the wind gap that the air feed stream flowed through between the adjacent grids. And fixing base 3551 is under the fretwork structure, can be that fixing base 3551 surface is formed with a plurality of strengthening ribs that the interval set up, improves the effect of bearing to filtration module 351 and odor removal module 353, and can be formed with the wind gap that the air feed flows through between the adjacent strengthening rib.

Fixing base 3551 and lid 3553 can replace the connecting plate, and the connecting plate is including fixed part and the connecting portion that are connected, and the fixed part has still been offered and has been supplied external air current to flow through the wind gap, and connecting portion and fixed part are the contained angle setting, and both can be the U type roughly, and wherein connecting portion is connected with the outer wall surface of collection petticoat pipe 13, and filtration module 351 and odor removal module 353 fixed mounting are in the fixed part to realize filtration module 351 and odor removal module 353 and collection petticoat pipe 13's inner wall surface or outer wall surface's connection.

Further, with continued reference to fig. 3, a second sealing member 70 is disposed in a gap between the fixing seat 3551 and the top plate 137 of the fume collecting hood 13 to seal the gap, so as to prevent impurities from entering the blower 31 or the fume collecting hood 13 from the gap, and specifically, the second sealing member 70 may be a sealing ring, a sealing strip or a sealing gasket, which is not limited herein.

In an embodiment, referring to fig. 6 to 8, the fan assembly 32 includes a fan 31 and a fan housing 33 accommodated in the installation cavity, the fan housing 33 includes an air inlet 33a and an air outlet 33b, the air inlet 33a is communicated with an air outlet 31a of the fan 31, the air outlet 33b is communicated with an air outlet 13c, and the filtering module 351 and the deodorizing module 353 are accommodated in the fan housing 33.

In this embodiment, the fan 31 may be a centrifugal fan 31 or an axial fan 31, and when the fan 31 is configured as the axial fan 31, on one hand, the air volume of the centrifugal fan 31 is larger, and the noise is smaller, so that the air curtain device 30 can realize long-distance air supply under low noise. On the other hand, the centrifugal fan 31 has the function of changing the wind direction (axial air inlet and radial air outlet), and can realize the top surface air inlet and front air outlet of the fume collecting hood 13 on the premise of not specially arranging a turning air duct component. The air cavity seat 33 is used for guiding the air flow driven by the fan 31 to the air outlet 13c, and is made of plastic or metal, when made of plastic, the air cavity seat 33 is relatively light in weight, difficult to rust, and can be processed in an integral injection molding mode, so that the air cavity seat 33 is convenient to produce and manufacture, and the material of the air cavity seat 33 is not specifically limited. The wind cavity seat 33 may be installed by being in butt joint with the fan 31 on one side, so as to be indirectly accommodated in the installation cavity, or by being in butt joint with the fan 31 on one side and being directly connected with the inner cavity wall in the installation cavity, so that the stability of the wind cavity seat in accommodating the wind cavity seat in the installation cavity is improved. When the filtering module 351 and the deodorizing module 353 are accommodated in the air chamber seat 33, the air flowing through the inside of the air chamber seat 33 can be filtered and deodorized, and the space except the air chamber seat 33 is not required to be occupied, and the hiding property is better when accommodated in the air chamber seat 33.

With continued reference to fig. 8 to 9, the air chamber seat 33 includes a main body 331 and a transition portion 333, the main body 331 is in butt-joint communication with the transition portion 333, an included angle is formed between an extending direction of the main body 331 and an extending direction of the transition portion 333, the air inlet 33a is formed in the transition portion 333, the main body 331 extends along a left-right direction of the fume collecting hood 13, the air outlet 33b is formed on a side of the main body 331 far away from the transition portion 333, the air outlet 33b and the air outlet 13c extend along an extending direction of the main body 331, one of the filter module 351 and the odor removing module 353 is adapted to be disposed in the transition portion 333, and the other of the filter module 351 and the odor removing module 353 is adapted to be disposed in the main body 331.

Since the main body 331 is extended in the right-left direction in order to improve the uniformity of the air flow in the right-left direction, if the air flow directly enters the main body 331 through the air outlet 31a of the fan 31, the air flow turns too rapidly, and excessive pressure is lost. Therefore, the air chamber seat 33 further includes a transition portion 333, so that the air flow can flow through the transition portion 333 before flowing into the main body portion 331 under the guidance of the transition portion 333, so that the pressure loss of the air flow flowing in the air chamber seat 33 can be reduced, and the uniformity of the air outlet 13c is improved. Therefore, the filter module 351 and the deodorizing module 353 are adapted to the transition portion 333 and the main body portion 331, so that the filter module 351 and the deodorizing module 353 can be mounted in the air chamber seat 33, and it should be emphasized that the adaptation herein refers to the adaptation of the filter module 351 and the deodorizing module 353 to the size and shape of the main body portion 331 and the transition portion 333.

In an example, the primary filter module 3511 and the secondary filter module 3513 of the filter module 351 are adapted to the transition portion 333, and the odor eliminating module 353 is adapted to the main body portion 331. In another embodiment, the primary filter module 3511 and the secondary filter module 3513 of the filter module 351 are adapted to the main body 331, and the odor removal module 353 is adapted to the transition 333.

In an embodiment, referring to fig. 9, the air chamber seat 33 includes a seat body 335 having an opening and a cover plate 337 covering the opening, the air inlet 33a is disposed on the seat body 335, the air outlet 33b is disposed on the cover plate 337, and the filtering module 351 and the deodorizing module 353 are connected in the seat body 335.

In this embodiment, in order to take out the filter module 351 and the odor removal module 353 from the seat body 335 for maintenance or replacement, the seat body 335 and the cover plate 337 are provided, and when the filter module 351 and the odor removal module 353 need to be taken out from the seat body 335, the cover plate 337 can be directly opened and taken out from the opening, thereby facilitating operation. Wherein, the cover plate 337 and the seat body 335 may be movably connected, and a rotating shaft may be specifically disposed at a connection position of the cover plate 337 and the seat body, so that the opening is shielded or exposed by the cover plate 337 in a rotating manner. Of course, the movable connection between the cover plate 337 and the seat body 335 may be a drawing manner, and by providing a sliding connection therebetween, the cover plate 337 can shield or expose the opening. The cover plate 337 and the seat body 335 may be screwed together, and is not limited thereto.

Specifically, the cover plate 337 may further include an air supply plate 3373 and a plate main body 3371 covering the opening, wherein the air supply plate 3373 is detachably mounted on the plate main body 3371, and part of the structure extends out of the air outlet 13c to define the air outlet 33b, so that air curtain air flows with different effects can be generated by selecting the air supply plates 3373 of different types of air outlets 33 b. In some exemplary embodiments, a plurality of sub-air-supplying openings 33b are formed on one type of air-supplying plate 3373 at intervals, and a reinforcing structure is formed between the sub-air-supplying openings 33b to enhance the strength of the air-supplying plate 3373, and the width of two adjacent sub-air-supplying openings 33b in the extending direction of the main body 331 is gradually increased, so that the air volume of each sub-air-supplying opening 33b is uniform and the uniformity of the air curtain air flow is enhanced by setting different sizes for the sub-air-supplying openings 33b at different positions.

With continued reference to fig. 9 to 10, in an embodiment, in order to improve the accuracy of connecting the filter module 351 and the odor removing module 353 to the base body 335, at least two positioning ribs 3351 are protruding on the inner side wall of the base body 335, the filter module 351 includes a first mounting block, a first positioning groove 351a is recessed on the outer surface of the first mounting block, one of the positioning ribs 3351 is penetrating through the first positioning groove 351a, the odor removing module 353 includes a second mounting block, a second positioning groove 353a is recessed on the outer surface of the second mounting block, and another positioning rib 3351 is penetrating through the second positioning groove 353a.

In this embodiment, it is understood that the first mounting block may be filled with a filter structure, and when the filter module 351 includes the primary filter module 3511 and the secondary filter module 3513, that is, the first mounting block includes a first sub-mounting block and a second sub-mounting block, at this time, the first sub-mounting block is filled with a first filter, the second sub-mounting block is filled with a second filter, and the second mounting block may be filled with a deodorizing filter. During installation, the filter module 351 and the odor removing module 353 can be positioned and installed in the seat body 335 through the matching of the positioning ribs 3351 and the first positioning grooves 351a with the second mounting grooves, so that the installation of a user is convenient, the positioning ribs 3351 can also play a limiting effect on the filter module 351 and the odor removing module 353, and the stability of the filter module 351 and the odor removing module 353 when connected to the seat body 335 is ensured. Of course, the first mounting block and the second mounting block may be replaced by a housing structure, which is not limited herein.

Further, when the cover plate 337 is in threaded connection with the seat body 335, a first threaded hole may be formed in the cover plate 337, a second threaded hole may be formed in the positioning rib 3351, and a threaded connection member sequentially penetrates through the first threaded hole and the second threaded hole, so that threaded connection between the cover plate 337 and the seat body 335 may be achieved.

In one embodiment, referring to fig. 3, 5, 7 and 8, the filter module 351 includes a primary filter module 3511 and a secondary filter module 3513, wherein the primary filter module 3511 is in butt-joint communication with the secondary filter module 3513 and is located upstream of the secondary filter module 3513 in the airflow direction, and the odor removal module 353 is in butt-joint communication with a side of the primary filter module 3511 facing away from the secondary filter module 3513 or a side of the secondary filter module 3513 facing away from the primary filter module 3511.

In this embodiment, the primary filter module 3511 plays a role in rough filtration, and mainly filters larger particles, while the secondary filter module 3513 plays a role in fine filtration, and filters smaller particles that the primary filter module 3511 cannot filter, so as to achieve a secondary filtration effect, thereby further improving the filtration effect on the air flow. In one example, the odor removal module 353 is in abutting communication with a side of the primary filter module 3511 facing away from the secondary filter module 3513, such that the air flow is filtered after the air flow is deodorized. In another example, the odor removing module 353 is in butt-joint communication with the side of the secondary filter module 3513 away from the primary filter module 3511, so that the airflow can be filtered and then enter the odor removing module 353, so that particles in the oil smoke can be prevented from adhering to the odor removing filter screen in the odor removing module 353, and the service life of the odor removing module 353 is prolonged.

In one embodiment, the primary filter module 3511 comprises a first screen comprising a coarse cotton layer; and/or, the secondary filter module 3513 comprises a second screen comprising a fine cotton filter layer. Through adopting coarse filtration cotton layer and smart filter cotton layer to realize straining and smart the straining to the air current, can play good filter effect simultaneously, do not exert an influence to the flow of air current, guarantee the smoothness nature of air current flow.

The fine filter cotton layer can be a HEPA (High Efficiency Particulate Air, high-efficiency air filtration) filter cotton layer and is mainly used for filtering particulate matters (liquid and solid) in oil smoke, and the fine filter cotton layer can be made of PP filter paper (polypropylene filter paper), glass fiber, PTFE filter paper (polytetrafluoroethylene filter paper), nanofiber, melt-blown polyester non-woven fabric and the like.

In one embodiment, the odor elimination module 353 includes an odor elimination screen that includes an activated carbon layer. The active carbon layer is mainly used for filtering volatile organic compounds (smell) in the oil fume, the materials of the active carbon layer can comprise active carbon fibers, active carbon particles and the like, the active carbon materials can be coconut shells, fruit shells, coal carbon and the like, the specific surface area of the materials is large, or the active carbon materials can be molecular sieve materials, and the adsorption effect of the materials is good.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present utility model and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limitations of the present patent, and specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. A range hood, characterized in that it includes:

A smoke collecting hood is formed with a smoke collecting chamber. The smoke collecting hood is provided with a smoking port connected to the smoke collecting chamber. The smoke collecting hood is also formed with a smoke collecting chamber that is independent of the smoke collecting chamber. An installation cavity, the smoke collecting hood is provided with an air inlet and an air outlet respectively connected to the installation cavity; and

Air curtain device, the air curtain device includes a fan assembly and a purification assembly connected to the smoke collecting hood, the fan assembly is accommodated in the installation cavity, the purification assembly includes a filter module and a odor purification module, the The filter module and the odor purification module are connected and connected;

Driven by the fan assembly, the external airflow entering through the air inlet flows through the fan assembly, is filtered by the filter module, and is purified by the odor purifying module, and is finally filtered by the air outlet. An air curtain airflow is blown downward, and the air curtain airflow is at least partially located in front of the smoking port.

2. The range hood according to claim 1, wherein the filter module and the odor purification module are both located at the air inlet of the smoke collecting hood.

3. The range hood according to claim 2, wherein the filter module and the odor purification module are both disposed on the outer wall of the smoke collecting hood and cover the air inlet.

4. The range hood according to claim 3, wherein the smoke collecting hood includes a front plate, a back plate arranged opposite to the front plate, and is connected between the front plate and the back plate. The side panels between the panels and the top panel connected to the upper side of the side panels;

The front panel, the back panel, the side panels and the top panel are enclosed to define the smoke collecting cavity and the installation cavity, the air inlet is opened on the wall surface of the top panel, and the air outlet and the smoking port are respectively opened on the front wall surface of the front panel.

5. The range hood according to claim 1, wherein the filter module and the odor purification module are both disposed on the outer wall of the smoke collecting hood and cover the air outlet.

6. The range hood according to any one of claims 2 to 5, wherein the purification component includes a connection structure, the filter module and the odor purification module are connected to the connection structure, the The connecting structure is connected to the smoke collecting hood.

7. The range hood according to claim 6, wherein the connection structure includes a fixed base with a hollow structure and a cover body with a hollow structure connected to the fixed base, and the fixed base is away from the fixed base. One side of the cover body is connected to the smoke collecting hood, and the fixed seat is enclosed with the cover body to define a receiving cavity for accommodating the filter module and the deodorizing module.

8. The range hood according to claim 1, wherein the fan assembly includes a fan and an air cavity seat accommodated in the installation cavity, the air cavity seat includes an air inlet and an air supply outlet, and the The air inlet is connected to the exhaust port of the fan, the air supply port is connected to the air outlet, and the filter module and the odor purification module are both placed in the air cavity seat.

9. The range hood according to claim 8, wherein the air chamber seat includes a main body and a transition part, the main body and the transition part are connected and connected, and the extension direction of the main part is in line with the transition part. The extending directions of the transition portions are arranged at an included angle;

The air inlet is opened in the transition part, the main body part extends in the left and right direction of the smoke collecting hood, the air supply opening is opened in a side of the main body part away from the transition part, the air supply opening And the air outlet extends along the extension direction of the main body part;

One of the filter module and the deodorizing module is adapted to be provided in the transition part, and the other of the two is adapted to be provided in the main part.

10. The range hood according to claim 8, wherein the air chamber seat includes a seat body with an opening and a cover plate covering the opening, and the air inlet is provided on the seat. body, the air supply outlet is provided on the cover plate, and the filter module and the odor purification module are connected to the seat body.

11. The range hood according to claim 10, wherein at least two positioning ribs are protruding from the inner wall of the seat body, and the filter module includes a first installation block, and the first installation block has A first positioning groove is recessed on the outer surface, and one of the positioning ribs is disposed in the first positioning groove;

The odor purification module includes a second mounting block, the outer surface of the second mounting block is recessed with a second positioning groove, and the other positioning rib is passed through the second positioning groove.

12. The range hood of claim 1, wherein the filter module includes a primary filter module and a secondary filter module, the primary filter module is connected to the secondary filter module, and is connected to the secondary filter module. Located upstream of the secondary filter module in the air flow direction;

The deodorizing module is connected to the side of the primary filtration module facing away from the secondary filtration module or the side of the secondary filtration module facing away from the primary filtration module.

13. The range hood according to claim 12, wherein the first-level filter module includes a first filter screen, and the first filter screen includes a coarse filter cotton layer;

And/or, the secondary filtration module includes a second filter screen, and the second filter screen includes a fine filter cotton layer.

14. The range hood of claim 1, wherein the odor purification module includes an odor purification filter, and the odor purification filter includes an activated carbon layer.