CN210951465U - Fume exhaust fan - Google Patents

Abstract

The utility model relates to a kitchen appliances technical field especially relates to a lampblack absorber. The range hood comprises a machine body, a filtering oil screen and a fixing device, wherein the machine body is provided with a smoke collection cavity and an air inlet communicated with the smoke collection cavity; the filter oil screen is arranged in the smoke collection cavity close to the air inlet, and can enter and exit the smoke collection cavity through the air inlet after being inclined; the fixing device comprises a locking piece which can detachably connect the oil filter screen and the machine body, and the operable part of the locking piece is arranged outside the machine body. The utility model discloses a built-in filtration oil net of lampblack absorber that exists among the prior art has been alleviated to the lampblack absorber and has been dismantled inconvenient technical problem.

Description

Fume exhaust fan

Technical Field

The utility model belongs to the technical field of the kitchen appliance technique and specifically relates to a range hood is related to.

Background

The range hood is also called as range hood or range hood, and is a kitchen appliance for purifying the kitchen environment. The range hood generally comprises a machine body, a power structure arranged in the machine body and a smoke collection cavity arranged at the bottom of the machine body, wherein a filter oil screen is arranged at the bottom of the smoke collection cavity, and the filter oil screen is arranged at an air inlet of the machine body.

The oil filter screen is generally installed outside the smoke collecting cavity, so that when a user dismantles the oil filter screen, the oil filter screen is easy to directly fall off due to self gravity, and the risk of smashing the user and damaging the oil filter screen is realized.

At present, a built-in filtering oil net is provided on the market, namely the filtering oil net is arranged in a smoke collection cavity, the problem that the filtering oil net is easy to fall off when being disassembled and assembled is solved, but when the filtering oil net needs to be maintained, the filtering oil net cannot be directly disassembled from an air inlet, so that the disassembling of the filtering oil net is inconvenient, and the strength of the maintenance work of the filtering oil net is improved.

Therefore, the present application provides a new range hood in view of the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lampblack absorber to alleviate the built-in filter oil net of the lampblack absorber that exists among the prior art and dismantle inconvenient technical problem.

Based on the above-mentioned purpose, the utility model provides a range hood, this range hood includes:

the smoke collection device comprises a machine body, wherein a smoke collection cavity and an air inlet communicated with the smoke collection cavity are arranged in the machine body;

the filtering oil screen is arranged in the smoke collection cavity and close to the air inlet, can enter and exit the filtering oil screen of the smoke collection cavity through the air inlet after being inclined, and is arranged at the air inlet;

and the fixing device comprises a locking piece which can detachably connect the oil filtering screen and the machine body, and an operable part of the locking piece is arranged outside the machine body.

Further, the locking piece is a threaded connection piece;

the fixing device further comprises a first connecting piece connected to the machine body, a first connecting hole is formed in the first connecting piece, a second connecting hole is formed in the oil filtering net, and the threaded connecting piece can penetrate through the first connecting hole and the second connecting hole and lock the oil filtering net and the first connecting piece;

the nut of the threaded connecting piece is arranged outside the machine body.

Furthermore, a first inserting portion is arranged on the first connecting piece, a first slot matched with the first inserting portion is formed in the oil filtering screen, and when the first inserting portion is inserted into the first slot, the first connecting hole corresponds to the second connecting hole.

Furthermore, the fixing device also comprises a second connecting piece connected with the machine body, and a second slot is arranged on the second connecting piece;

one end of the filtering oil screen, which is far away from the first connecting piece, is provided with a second inserting part matched with the second slot, and the second inserting part is inserted into the second slot.

Further, a rubber pad is arranged on the second inserting part.

Furthermore, after the second inserting part is inserted into the second slot, the first inserting part can be inserted into the first slot by the track of the oil filtering screen rotating around the second connecting piece.

Furthermore, the oil filtering screen comprises a side plate formed by enclosing a plurality of plate parts and a top plate connected to the top of the side plate, and the top plate and the side plate form an oil smoke collecting cavity together;

the plate is provided with a filter hole, the plate is connected with the machine body through the locking piece, and the oil fume collecting cavity is communicated with the fume collecting cavity through the filter hole.

Further, the opening rate of the filter holes on the plate is more than 30%.

Further, after the range hood is hung, the area of the projection of the filter hole on the horizontal plane is less than 2.25 pi mm²。

Further, the area of the filter holes is not more than 30mm²。

Further, the side length of the filtering hole is less than 5 mm.

Further, the opening of the oil smoke collecting cavity is gradually increased towards the direction away from the top plate.

Further, after the range hood is hung, the included angle between the plate and the horizontal plane is larger than 30 degrees.

Furthermore, the plate comprises a plurality of first connecting parts parallel to each other and a plurality of second connecting parts parallel to each other, and the first connecting parts and the second connecting parts are arranged at an angle, so that the filtering holes formed in the plate are rhombic.

Further, after the range hood is hung, the included angle between the first connecting part and the horizontal plane ranges from 20 degrees to 60 degrees, and the included angle between the second connecting part and the horizontal plane ranges from 20 degrees to 60 degrees.

Further, the roof includes the minimum corner, after the lampblack absorber was hung and is adorned, the roof to minimum corner slope makes minimum corner is in the lowest of roof.

Further, after the range hood is hung, the inclination angle of the top plate relative to the horizontal plane is larger than 10 degrees.

Furthermore, the machine body is close to the air inlet and extends towards the smoke collecting cavity to form a first flow guide folding edge, and the first flow guide folding edge is positioned in the smoke collecting cavity and forms a first flow guide groove together with the side plate;

and/or one side of the side plate, which is far away from the top plate, is bent to form a second flow guide folding edge, and the bending direction deviates from the oil smoke collecting cavity; and a second drainage groove extending along the circumferential direction of the side plate is arranged at the position, close to the side plate, of the second flow guide folding edge.

Further, the distance between the opening edge of the filtering hole on the side, away from the top plate, of the plate and the bottom of the second drainage groove is larger than 4 mm.

Further, after the range hood is hung, the first drainage groove and the corresponding position of the lowest corner are the lowest position of the first drainage groove, and the second drainage groove and the corresponding position of the lowest corner are the lowest position of the second drainage groove.

Further, the adjacent plate surrounding joint is provided with an oil guide part extending from the top plate to the first drainage groove or the second drainage groove.

Adopt above-mentioned technical scheme, the utility model discloses a lampblack absorber has following beneficial effect:

such setting, when needs will filter the oil screen and install in the organism, at first will cross the oil screen slope so that filter the oil screen and can get into the collection smoke chamber through the air intake, and make and filter the oil screen and set up in air intake department, the locking piece of operating again makes the locking piece will cross oil screen and organism and connect, has realized filtering the oil screen and has installed in the organism. Wherein, because the operable part of the locking piece is arranged outside the machine body, the locking piece is convenient to operate, and the filter screen and the machine body are convenient to be connected through the locking piece.

When needing to be dismantled the filter oil net from the organism, at first the locking piece of operation makes filter oil net and organism dismantle, will filter the oil net slope again so that filter the oil net and can take out from the smoke collecting cavity through the air intake, realized dismantling filter oil net from the organism. The operable part of the locking piece is arranged outside the machine body, so that the locking piece can be conveniently operated, the connection relation between the oil filtering net and the machine body is conveniently released, and the oil filtering net is conveniently detached from the machine body.

In addition, because the oil filter screen sets up in the collection smoke cavity, and only will filter the oil filter screen that the slope of oil filter screen just can follow the air intake and take out, consequently, when the operation locking piece is in order to filter oil filter screen and dismantle from the organism, filter oil filter screen can not directly drop because of self gravity reason, played the effect of protection user and filter oil filter screen.

In conclusion, the arrangement of the oil filtering net of the range hood in the smoke collection cavity relieves the problem that the oil filtering net is easy to injure users and break down, and the oil filtering net can be conveniently taken out from the smoke collection cavity through the air inlet and installed in the smoke collection cavity without disassembling the body, so that the oil filtering net is more convenient to disassemble, the oil filtering net is convenient to clean, maintain or maintain, and the technical problem that the built-in oil filtering net of the range hood in the prior art is inconvenient to disassemble is relieved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is an exploded view of a range hood provided by an embodiment of the present invention;

fig. 2 is a schematic structural view of a filtering oil screen of the range hood provided by the embodiment of the present invention;

fig. 3 is an enlarged view of a partial structure of a portion E of the range hood shown in fig. 2;

fig. 4 is an enlarged view of a partial structure of a portion F of the range hood shown in fig. 2;

fig. 5 is one of the schematic structural diagrams of the parts of the range hood provided by the embodiment of the present invention;

fig. 6 is an enlarged view of a partial structure of a portion B of the range hood shown in fig. 5;

fig. 7 is a schematic structural diagram of a first connecting piece of a range hood provided by the embodiment of the present invention;

fig. 8 is a second schematic view of a part of the structure of the range hood according to the embodiment of the present invention;

fig. 9 is an enlarged partial structure view of a portion C of the range hood shown in fig. 8;

fig. 10 is a third schematic view of a part of the structure of the range hood provided by the embodiment of the present invention;

fig. 11 is an enlarged view of a portion a of the range hood shown in fig. 10;

fig. 12 is a schematic structural diagram of a second connecting member of the range hood provided by the embodiment of the present invention;

fig. 13 is a structural view of the second connector shown in fig. 12 from the H direction;

fig. 14 is an enlarged partial structure view of a portion G of the range hood shown in fig. 10;

fig. 15 is a sectional view of a part of the structure of the range hood provided by the embodiment of the present invention;

fig. 16 is an enlarged partial structure view of a portion D of the range hood shown in fig. 15.

Icon: 1-body; 11-a smoke collection cavity; 12-an air inlet; 13-first flow guiding folding; 14-a first drainage groove;

2-filtering an oil screen; 22-a second connection hole; 23-a second mating part; 24-rubber pad; 25-side plate; 251-a filter aperture; 252-second flow guiding folding edge; 253-a second drainage groove; 254-a limit bump; 26-a top plate; 261-lowest corner; 27-a first connection; 28-a second connection; 29-oil guide;

3-a fixing device; 31-a locking element; 32-a first connector; 321-a first mating part; 322-a first connection hole; 33-a second connection; 331-a second slot; 332-a mounting portion; 333-a projection; 334-clamping part.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

Referring to fig. 1, the present embodiment provides a range hood, including: the device comprises a machine body 1, an oil filtering net 2 and a fixing device 3. A smoke collection cavity 11 and an air inlet 12 communicated with the smoke collection cavity 11 are arranged in the machine body 1; the filtering oil screen 2 is arranged in the smoke collection cavity 11 and close to the air inlet 12, and can enter and exit the smoke collection cavity 11 through the air inlet 12 after being inclined; with continued reference to fig. 6-9, the fixing device 3 includes a locking member 31 capable of detachably connecting the oil filter screen 2 and the machine body 1, and an operable portion of the locking member 31 is disposed outside the machine body 1. Note that the outside of the machine body 1 is the side of the machine body 1 away from the smoke collection cavity 11.

Such setting, when needing to install filter screen 2 in organism 1, at first incline filter screen 2 so that filter screen 2 can get into collection cigarette chamber 11 through air intake 12, and make filter screen 2 set up in air intake 12 department, operate locking piece 31 again and make locking piece 31 connect filter screen 2 and organism 1, realized filter screen 2 and installed in organism 1. Wherein, the operable part of the locking member 31 is disposed outside the machine body 1 so as to operate the locking member 31, thereby facilitating the connection of the oil filter screen 2 and the machine body 1 through the locking member 31.

When the filter oil screen 2 needs to be detached from the machine body 1, the locking member 31 is firstly operated to detach the filter oil screen 2 from the machine body 1, and then the filter oil screen 2 is inclined so that the filter oil screen 2 can be taken out from the smoke collection chamber 11 through the air inlet 12, thereby detaching the filter oil screen 2 from the machine body 1. Wherein, because the operable part of the locking member 31 is disposed outside the machine body 1, the locking member 31 can be conveniently operated so as to release the connection relationship between the filter oil screen 2 and the machine body 1, thereby facilitating the detachment of the filter oil screen 2 from the machine body 1.

In addition, because the filter screen 2 is disposed in the smoke collection chamber 11, and the filter screen 2 can be taken out from the air inlet 12 only by inclining the filter screen 2, when the locking member 31 is operated to detach the filter screen 2 from the machine body 1, the filter screen 2 does not directly drop due to self gravity, thereby protecting the user and the filter screen 2.

In conclusion, the arrangement of the filter screen 2 of the range hood in the smoke collection cavity 11 relieves the problem that the filter screen is easy to injure users and break down, and the filter screen 2 can be conveniently taken out of the smoke collection cavity 11 through the air inlet 12 and the filter screen 2 is installed in the smoke collection cavity 11 without disassembling the body 1, so that the filter screen 2 is more convenient to disassemble, the filter screen 2 is convenient to clean, maintain or maintain, and the technical problem that the built-in filter screen of the range hood in the prior art is inconvenient to disassemble is relieved.

In addition, the oil filtering net 2 of the range hood is a single-layer oil net, compared with a combined oil filtering net with an inner net cover and an outer net cover, the step of assembling and installing the inner net cover and the outer net cover is reduced by the oil filtering net 2, so that the installation complexity of the oil filtering net 2 is reduced, the technical problem that the built-in oil filtering net of the range hood in the prior art is inconvenient to disassemble is further solved, and the single-layer oil filtering net 2 is arranged, so that the processing cost of the oil filtering net 2 is lower.

Optionally, the number of the air inlets 12 on the machine body 1 is one or more, such as two, three, four or five, etc., and is not limited herein.

Preferably, referring to fig. 6 and 9, the locking member 31 is a threaded connecting member, the fixing device 3 further includes a first connecting member 32 connected to the machine body 1, the first connecting member 32 is provided with a first connecting hole 322, referring to fig. 3, the filter screen 2 is provided with a second connecting hole 22, referring to fig. 6 and 9, the threaded connecting member can pass through the first connecting hole 322 and the second connecting hole 22 and lock the filter screen 2 and the first connecting member 32, and a nut of the threaded connecting member is disposed outside the machine body 1 so as to be rotated by the nut.

Alternatively, the threaded connector is a bolt, a screw, or the like, and is not limited herein. Wherein, it is prior art that filter oil net 2 and organism 1 pass through threaded connection spare such as bolt, screw or screw can dismantle the connection, consequently do not describe herein any more.

Preferably, the oil filter screen 2 is provided with a first slot (not shown in the figure), and referring to fig. 7, the first connector 32 is provided with a first inserting portion 321 matched with the first slot; referring to fig. 5 and 6, when the first inserting portion 321 is inserted into the first slot, the first connecting hole 322 corresponds to the second connecting hole 22.

With such an arrangement, after the user places the oil filter screen 2 in the smoke collection chamber 11 through the air inlet 12, the first inserting portion 321 is first inserted into the first slot, and then the threaded connector is operated to pass through the first connection hole 322 and the second connection hole 22, so that the oil filter screen 2 and the first inserting portion 321 are locked, thereby connecting the oil filter screen 2 to the machine body 1.

Wherein, the setting of first slot and first grafting portion 321 carries on spacingly for filtering oil screen 2 to it is more accurate to make the position of installing in organism 1 of oil screen 2, and has improved the joint strength who filters oil screen 2 and install in organism 1, is convenient for align first connecting hole 322 and second connecting hole 22 in addition, thereby is convenient for connect threaded connection spare soon.

Optionally, the first connection hole 322 is disposed in the first plugging portion 321, or the first connection hole 322 is not disposed in the first plugging portion 321, which is not limited herein. Preferably, the first connection hole 322 is disposed in the first inserting portion 321.

It should be noted that, since the filter screen 2 is disposed in the smoke collection chamber 11, the first connecting member 32 is preferably located in the smoke collection chamber 11 so as to connect the filter screen 2 with the machine body 1.

Alternatively, the first connector 32 is connected to the machine body 1 by screwing, clipping or buckling, etc., without limitation.

Preferably, referring to fig. 10 and 11 in combination with fig. 12 and 13, the fixing device 3 further includes a second connecting member 33 connected to the machine body 1 and disposed in the smoke collecting cavity 11, the second connecting member 33 is provided with a second slot 331; referring to fig. 4, one end of the oil filter screen 2 away from the first connector 32 is provided with a second insertion portion 23 matching with the second slot 331, and the second insertion portion 23 is inserted into the second slot 331.

With such an arrangement, the second inserting portion 23 is inserted into the second inserting groove 331 to further align and position the first connecting hole 322 and the second connecting hole 22, and at the same time, the firmness of connecting the oil filter screen 2 to the machine body 1 can be improved.

Preferably, after the second inserting-connecting part 23 is inserted into the second slot 331, the track of the rotation of the oil filter screen 2 around the second connecting part 33 enables the first inserting-connecting part 321 to be inserted into the first slot.

With such an arrangement, after the user places the oil filter screen 2 in the smoke collection cavity 11 through the air inlet 12, the second insertion portion 23 is firstly inserted into the second insertion slot 331, and then the oil filter screen 2 rotates around the second connecting member 33 toward the direction close to the first insertion portion 321, during the rotation of the oil filter screen 2, the first insertion portion 321 can be directly inserted into the first insertion slot, and then the threaded connecting member is operated from the outside of the machine body 1, so that the threaded connecting member passes through the first connecting hole 322 and the second connecting hole 22 to lock the oil filter screen 2 and the first insertion portion 321, thereby connecting the oil filter screen 2 to the machine body 1.

The track of the filter oil screen 2 rotating around the second connecting piece 33 enables the first inserting portion 321 to be inserted into the first slot, so that the first inserting portion 321 is prevented from being inserted into the first slot, and the efficiency of installing the filter oil screen 2 in the machine body 1 is improved.

When the filter screen 2 needs to be detached from the machine body 1, firstly, the threaded connecting part is operated to detach the filter screen 2 and the first inserting part 321, and then the filter screen 2 rotates around the second connecting part 33 in a direction away from the first inserting part 321, wherein in the rotating process of the filter screen 2, the first inserting part 321 can be directly separated from the first slot, at this time, a user operates the filter screen 2 through the air inlet 12, so that the filter screen 2 moves in a direction away from the second connecting part 33, so that the second inserting part 23 is separated from the second slot 331, and then the filter screen 2 is inclined to enable the filter screen 2 to be taken out from the smoke collection cavity 11 through the air inlet 12, thereby achieving the detachment of the filter screen 2 from the machine body 1.

To sum up, this lampblack absorber has further improved the joint strength who filters oil screen 2 and install in organism 1 and the convenience of filtering oil screen 2 dismantlement.

Optionally, the first mating part 321 and the second mating part 23 are a male tab or a plug, and the specific shape thereof is not limited.

Preferably, referring to fig. 12 and 13, the second connecting member 33 includes a mounting portion 332 for connecting with the machine body 1, a protruding portion 333 and a clamping portion 334 both fixedly disposed on the mounting portion 332; the second slot 331 is opened in the protruding portion 333. Referring to fig. 11, when the second inserting portion 23 is inserted into the second slot 331, one side of the plate, such as the limiting protrusion 254, away from the top plate 26 can be clamped between the clamping portion 334 and the protrusion portion 333, so as to position the oil filter screen 2.

Preferably, referring to fig. 4, a rubber pad 24 is disposed on the second insertion part 23. After the second inserting part 23 is inserted into the second slot 331, the second inserting part 23 is tightly connected with the second slot 331 through the rubber pad 24, so that the connection strength of the second inserting part 23 and the second connecting piece 33 is improved, and the filter screen 2 is prevented from shaking relative to the machine body 1 after being installed on the machine body 1 to a certain extent.

Preferably, the number of the second inserting-connecting parts 23 on the oil filter screen 2 is one or more, preferably, referring to fig. 2, the number of the second inserting-connecting parts 23 is two, so that the limiting effect of the second connecting piece 33 on the oil filter screen 2 is enhanced on the basis of reducing the cost of the oil filter screen 2.

Preferably, referring to fig. 10 and 2, the oil filter screen 2 includes a side plate 25 formed by enclosing a plurality of plate members, and a top plate 26 connected to the top of the side plate 25, wherein the top plate 26 and the side plate 25 together form an oil smoke collecting cavity; referring to fig. 3 and 4, the plate has a filter hole 251, the side plate 25 is connected to the machine body 1 through the locking member 31, and the smoke collecting cavity is communicated with the smoke collecting cavity 11 through the filter hole 251.

That is, the top plate 26 is adjacent to the smoke trap chamber 11 so that the smoke trap chamber is disposed toward the cooktop. By the arrangement, the oil fume collecting cavity can collect oil fume generated by cooking, so that the oil fume is sucked, and the oil fume is prevented from escaping to a certain extent.

The filter holes 251 provided in the side plate 25 can suck the soot collected in the soot collecting chamber and diffused all around into the soot collecting chamber 11. After passing through the filtering holes 251, the oil stains are adhered to one side of the side plate 25 close to the smoke collection cavity 11 and flow downstream along the side plate 25, so that the oil stains can be collected conveniently; the oil dirt which does not pass through the filtering holes 251 can be adhered to one side of the side plate 25 far away from the smoke collecting cavity 11 and flow along the side plate 25, so that the oil dirt can be collected conveniently.

In addition, the side plate 25 is provided with a filtering hole 251, preferably, each plate is provided with the filtering hole 251, and the arrangement can comprehensively suck the oil smoke escaping to the periphery, so that the oil smoke suction efficiency of the range hood is improved.

Preferably, the oil filtering net 2 is integrally formed, so that the production efficiency of the oil filtering net 2 is improved, and the processing cost of the oil filtering net 2 is reduced.

Preferably, referring to fig. 15, the opening of the oil smoke gathering cavity gradually increases in the direction away from the top plate 26, that is, the end of the side plate 25 away from the top plate 26 inclines in the direction away from the oil smoke gathering cavity.

Such setting has increased the volume of holding together the oil smoke chamber, therefore has improved the cigarette effect of gathering that holds together the oil smoke chamber, and in addition, curb plate 25 slope sets up can be convenient for the greasy dirt that adheres to curb plate 25 along curb plate 25 following current, prevents to a certain extent that the greasy dirt from directly dripping and polluting the top of a kitchen range from curb plate 25.

Preferably, after the range hood is hung, the included angle between the plate and the horizontal plane is greater than 30 degrees, for example, the included angle between the plate and the horizontal plane is 35 degrees, 40 degrees, 45 degrees or 50 degrees, and the like, so that the oil stain guide device can play an effective flow guide role on the plate, is favorable for the downstream flow of the oil stain on the plate, and prevents the direct dropping of the oil stain to cause pollution to a cooking bench. The angle between each plate member of the side plates 25 and the horizontal plane is the same or different, and is not limited herein.

Optionally, the filtering holes 251 are diamond-shaped, square-shaped, kidney-shaped, circular or other irregular shapes, which are not limited herein.

Preferably, referring to fig. 11 and 9, in the present embodiment, the plate includes a plurality of first connecting portions 27 and a plurality of second connecting portions 28 that are parallel to each other, and the first connecting portions 27 and the second connecting portions 28 are disposed at an angle, so that the filtering holes 251 formed in the plate are in a diamond shape. That is, the filter holes 251 are alternately arranged on the side plate 25.

Such setting, first connecting portion 27 and second connecting portion 28 play the effect of leading oil and drainage to the greasy dirt, make the adhesion can follow first connecting portion 27 or second connecting portion 28 following current in the greasy dirt of curb plate 25, and can not flow to filtering hole 251 department and cause and filter hole 251 to block up, and, prevent to a certain extent that the adhesion is close to the greasy dirt of one side of collection smoke chamber 11 in curb plate 25 and can pollute the top of a kitchen range through filtering hole 251 drippage, consequently, this filter oil net 2 has improved the oil of leading to the greasy dirt.

In addition, the first connecting portion 27 and the second connecting portion 28 are arranged in a crossed manner to form a rectifying grid, and the rhombic filtering holes 251 form a negative pressure area, so that vortex is easily generated when oil smoke enters the negative pressure area at a high speed, and when the vortex passes through the first connecting portion 27 and the second connecting portion 28 which are arranged in a crossed manner, the vortex can be disturbed by the first connecting portion 27 and the second connecting portion 28, and then noise caused by the vortex is reduced.

Preferably, the filter holes 251 have an opening ratio of more than 30% in the plate, for example, 35%, 40%, 42%, 45%, 50%, 55%, etc. of the filter holes 251 in the plate, and preferably, 42% of the filter holes 251 in the plate, which improves the filtering efficiency of the filter screen 2.

In addition, preferably, after the range hood is hung, the area of the projection of the filter hole 251 on the horizontal plane is less than 2.25 pi mm². Wherein, the greasy dirt is generally in the shape of a water drop with a diameter of more than 3mm and has certain viscosity, therefore, preferably, after the range hood is hung, the side plate 25 can ensure that the projection area of the filter hole 251 on the horizontal plane is smaller than the area of the circular greasy dirt with a diameter of 3mm, namely, after the range hood is hung, the area of the filter hole 251 projected on the horizontal plane is smaller than 2.25 pi mm²With the arrangement, the risk that oil stains fall through the filter holes 251 under the action of gravity is reduced.

As another mode that can be realized, the area of the filtering holes 251 is not more than 30mm². For example, the area of the filtering hole 251 is 30mm²、25mm²、20mm²Or 15mm²Etc. ofSet up, improved the filter effect who filters oil net 2, and prevent to filter the hole 251 and too big lead to the adhesion to pass through to filter the hole 251 and drop to the top of a kitchen range and cause the pollution in the greasy dirt of the one side that the curb plate 25 is close to collection smoke chamber 11.

Preferably, the side length of the filtering hole 251 is less than 5 mm. For example, the side length of the diamond holes is 4.5mm, 4mm, 3.5mm, 3mm, 2.5mm or 2mm, etc., which further improves the filtering effect of the filtering oil net 2 and prevents the oil stains adhered to the side of the side plate 25 close to the smoke collecting cavity 11 from falling to the cooking bench through the filtering holes 251 to cause pollution due to the fact that the filtering holes 251 are too large.

Preferably, after the range hood is hung, the included angle between the first connecting portion 27 and the horizontal plane is 20 ° to 60 °, for example, the included angle between the first connecting portion 27 and the horizontal plane is 20 °, 25 °, 30 °, 35 °, 40 °, 45 °, 50 °, 55 °, or 60 °. After the range hood is hung, the included angle between the second connecting portion 28 and the horizontal plane ranges from 20 degrees to 60 degrees, for example, the included angle between the second connecting portion 28 and the horizontal plane ranges from 20 degrees, 25 degrees, 30 degrees, 35 degrees, 40 degrees, 45 degrees, 50 degrees, 55 degrees or 60 degrees. With such an arrangement, the oil guiding function of the first connecting portion 27 and the second connecting portion 28 to the oil stains is improved.

Preferably, referring to fig. 10 and 14, the top plate 26 includes a lowest corner 261, and after the range hood is hung, the top plate 26 is inclined to the lowest corner 261, so that the lowest corner 261 is at the lowest position of the top plate 26.

It should be noted that the lowest corner 261 is one of the corners of the top plate 26, for example, the top plate 26 is a rectangular plate having four corners, and then the lowest corner 261 is one of the four corners, and after the range hood is hung, the top plate 26 is inclined to the lowest corner 261.

With the arrangement, when the oil stains entering the smoke collection cavity 11 through the filter holes 251 are not directly adhered to the top plate 26, the oil stains can flow to the lowest corner 261 along the inclined top plate 26 and flow downstream to the first drainage groove 14 along the side plate 25 at the lowest corner 261, so that the oil stains adhered to the top plate 26 can be collected, and the oil stains adhered to the top plate 26 are prevented from directly dripping to the cooking bench.

Preferably, after the range hood is hung, the inclination angle of the top plate 26 relative to the horizontal plane is more than 10 °, for example, the inclination angle of the top plate 26 relative to the horizontal plane is 11 °, 15 °, 20 °, 25 ° or 30 °, and the like, and preferably, the inclination angle of the top plate 26 relative to the horizontal plane is 11 °. Due to the arrangement, the drainage effect on oil stains is further improved, and the oil stains are prevented from directly falling under the action of gravity to a certain extent.

It should be noted that the top plate 26 is provided with the filter holes 251 or is not provided with the filter holes 251; preferably, please refer to fig. 10, the top plate 26 is not provided with the filtering holes 251, that is, the top plate 26 is a non-hollow plate, at this time, the top plate 26 forms a drainage surface for oil contamination, which provides a drainage function for the oil contamination, and the oil contamination is guided to the side plate 25 by the flow guidance of the top plate 26, and can be collected with the oil contamination adhered to the side plate 25, so as to conveniently collect the oil contamination on the top plate 26 and the side plate 25 in a unified manner.

Preferably, referring to fig. 15 and 16, the machine body 1 extends toward the smoke collecting cavity 11 near the air inlet 12 to form a first flow guiding folding edge 13, and the first flow guiding folding edge 13 is located in the smoke collecting cavity and forms a first flow guiding groove 14 together with the side plate 25.

Alternatively, with continued reference to fig. 15 and 16, the side of the side plate 25 away from the top plate 26 is bent to form a second guiding folding edge 252, and the bending direction is away from the oil smoke collecting cavity; the second guide folding edge 252 is provided with a second guide groove 253 extending along the circumferential direction of the side plate 25 near the side plate 25.

Preferably, the machine body 1 extends towards the smoke collection cavity 11 to form a first flow guide folding edge 13 near the air inlet 12, and the first flow guide folding edge 13 is located in the smoke collection cavity and forms a first flow guide groove 14 together with the side plate 25; and one side of the side plate 25 far away from the top plate 26 is bent to form a second flow guide folding edge 252, and the bending direction deviates from the oil smoke collecting cavity; the second guide folding edge 252 is provided with a second guide groove 253 extending along the circumferential direction of the side plate 25 near the side plate 25.

Such setting, along curb plate 25 down-flow when not passing through the greasy dirt of filtration hole 251, can be down-flow to in the first drainage groove 14, also be that first drainage groove 14 plays the collecting action to the greasy dirt of adhering to the one side that the curb plate 25 keeps away from smoke collecting cavity 11, prevents that the greasy dirt from dripping to the top of a kitchen range. When the greasy dirt through filtering hole 251 flows downstream along side plate 25, can flow downstream to in the second drainage groove 253, also be that second drainage groove 253 plays the collecting action to the greasy dirt that adheres to the side plate 25 and is close to one side of smoke collecting cavity 11.

Optionally, with continued reference to fig. 16, a limiting protrusion 254 is disposed on a side of the second guide flange 252 away from the side plate 25, and the limiting protrusion 254 extends along the circumferential direction of the side plate 25, so that a second drainage groove 253 is formed among the limiting protrusion 254, the side plate 25, and the second guide flange 252; alternatively, the second guide flange 252 is grooved to form a second guide groove 253 near the side plate 25.

Preferably, the distance between the opening edge of the filter hole 251 of the side of the plate member away from the top plate 26 and the bottom of the second drainage groove 253 is greater than 4mm, for example, 4.5mm, 5mm, 5.5mm, or 6mm, and the like, and this arrangement prevents the oil stains from contacting the filter hole 251 while flowing along the second drainage groove 253 to block the filter hole 251 or from directly dropping to the cooking bench through the filter hole 251.

Preferably, with continued reference to fig. 10, after the range hood is hung, the position where the first drainage groove 14 corresponds to the lowest corner 261 is the lowest position of the first drainage groove 14, and the position where the second drainage groove 253 corresponds to the lowest corner 261 is the lowest position of the second drainage groove 253.

That is, after the lampblack absorber hung, first drainage groove 14 and second drainage groove 253 all incline to set up, make first drainage groove 14 and second drainage groove 253 all be in same horizontal plane along its extending direction, and all incline to the corresponding department with minimum corner 261.

With such an arrangement, oil stains adhered to the side plate 25 firstly flow downstream to the first drainage groove 14 or the second drainage groove 253 along the side plate 25 and flow downstream along the first drainage groove 14 or the second drainage groove 253, so that the oil stains are gathered at the corresponding position of the lowest corner 261 of the first drainage groove 14 or the second drainage groove 253, and the oil stains in the first drainage groove 14 and the second drainage groove 253 can be collected uniformly.

Preferably, the oil cup or the like is communicated with the position where first drainage groove 14 and second drainage groove 253 correspond to the lowest corner 261, so that the oil cup can effectively collect oil stains in first drainage groove 14 and second drainage groove 253.

Preferably, referring to fig. 14, the oil guide 29 extending from the top plate 26 to the first drainage groove 14 or the second drainage groove 253 is provided at the periphery of the adjacent plate.

With the arrangement, oil contamination which does not pass through the filter holes 251 can flow downstream into the first drainage groove 14 along the oil guide portion 29, that is, the oil guide portion 29 plays a role in guiding the oil contamination at the surrounding joint of adjacent plates, so that the oil contamination can be collected in the first drainage groove 14. The oil contamination passing through the filtering holes 251 can flow downstream to the second drainage groove 253 along the oil guiding portion 29, that is, the oil guiding portion 29 plays a role in guiding the oil contamination at the surrounding joint of the adjacent plates, so that the oil contamination can be collected in the second drainage groove 253.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.

Claims (21)

1. A range hood, comprising:

the smoke collection device comprises a machine body (1), wherein the machine body (1) is provided with a smoke collection cavity (11) and an air inlet (12) communicated with the smoke collection cavity (11);

the filtering oil screen (2) is arranged in the smoke collection cavity (11) and is close to the air inlet (12), and the filtering oil screen (2) can enter and exit the smoke collection cavity (11) through the air inlet (12) after being inclined; and

a fixing device (3), wherein the fixing device (3) comprises a locking piece (31) which can detachably connect the oil filter screen (2) and the machine body (1), and an operable part of the locking piece (31) is arranged outside the machine body (1).

2. A hood according to claim 1, characterized in that said locking piece (31) is a threaded connection;

the fixing device (3) further comprises a first connecting piece (32) connected to the machine body (1), a first connecting hole (322) is formed in the first connecting piece (32), a second connecting hole (22) is formed in the oil filtering screen (2), and the threaded connecting piece can penetrate through the first connecting hole (322) and the second connecting hole (22) and lock the oil filtering screen (2) and the first connecting piece (32);

the nut of the threaded connecting piece is arranged outside the machine body (1).

3. A range hood as claimed in claim 2, wherein the first connecting member (32) is provided with a first inserting portion (321), the filter screen (2) is provided with a first inserting slot matched with the first inserting portion (321), and when the first inserting portion (321) is inserted into the first inserting slot, the first connecting hole (322) and the second connecting hole (22) correspond to each other.

4. A range hood according to claim 3, characterized in that said fixing device (3) further comprises a second connecting piece (33) connected to said body (1), said second connecting piece (33) being provided with a second slot (331);

one end, far away from the first connecting piece (32), of the filtering oil screen (2) is provided with a second inserting part (23) matched with the second slot (331), and the second inserting part (23) is inserted into the second slot (331).

5. A range hood according to claim 4, characterized in that a rubber pad (24) is arranged on the second plug-in part (23).

6. A range hood according to claim 4, characterized in that after the second plug-in part (23) is inserted into the second slot (331), the first plug-in part (321) can be inserted into the first slot by the rotation of the filter screen (2) around the second connecting piece (33) along the track.

7. A range hood as claimed in any one of claims 1 to 6, characterized in that the filter screen (2) comprises a side plate (25) enclosed by a plurality of plate members and a top plate (26) connected to the top of the side plate (25), the top plate (26) and the side plate (25) together forming a smoke collecting cavity;

the plate is provided with a filter hole (251), the plate is connected with the machine body (1) through the locking piece (31), and the oil fume gathering cavity is communicated with the fume collecting cavity (11) through the filter hole (251).

8. A hood according to claim 7, characterized in that the filter aperture (251) has an aperture ratio of more than 30% in the plate element.

9. A range hood as claimed in claim 7, characterized in that after the range hood is hung, the area of the projection of the filter hole (251) on the horizontal plane is less than 2.25 pi mm²。

10. A range hood according to claim 7, characterized in that the area of the filter aperture (251) is not more than 30mm²。

11. A hood as claimed in claim 10, characterized in that the filter aperture (251) has a side length of less than 5 mm.

12. A range hood according to claim 7, characterized in that the opening of the fume collecting chamber is gradually enlarged in a direction away from the top plate (26).

13. A range hood as claimed in claim 12, wherein the angle between the plate and the horizontal is greater than 30 ° after the range hood is hung.

14. A range hood according to claim 7, characterized in that the plate includes a plurality of first connecting portions (27) and a plurality of second connecting portions (28) parallel to each other, and the first connecting portions (27) and the second connecting portions (28) are disposed at an angle so that the filtering holes (251) formed on the plate are formed in a diamond shape.

15. A range hood according to claim 14, characterized in that after said range hood is hung, the angle between said first connection portion (27) and the horizontal plane is in the range of 20 ° -60 °, and the angle between said second connection portion (28) and the horizontal plane is in the range of 20 ° -60 °.

16. A range hood according to claim 7, characterized in that the top plate (26) comprises a lowest corner (261), and after the range hood is hung, the top plate (26) is inclined towards the lowest corner (261) so that the lowest corner (261) is at the lowest position of the top plate (26).

17. A range hood according to claim 16, characterized in that the angle of inclination of the top plate (26) with respect to the horizontal is greater than 10 ° after the range hood is hung.

18. The range hood according to claim 16, wherein the machine body (1) extends towards the smoke collecting cavity (11) near the air inlet (12) to form a first flow guide folding edge (13), and the first flow guide folding edge (13) is located in the smoke collecting cavity and forms a first flow guide groove (14) together with the side plate (25);

and/or one side of the side plate (25) far away from the top plate (26) is bent to form a second flow guide folding edge (252), and the bending direction is deviated from the oil smoke collecting cavity; and a second drainage groove (253) extending along the circumferential direction of the side plate (25) is formed at the position, close to the side plate (25), of the second flow guide folding edge (252).

19. A hood fan according to claim 18, characterized in that the distance between the opening edge of the filter hole (251) on the side of the plate remote from the top plate (26) and the bottom of the second drainage groove (253) is greater than 4 mm.

20. A range hood according to claim 18, characterized in that after the range hood is hung, the corresponding position of the first drainage groove (14) and the lowest corner (261) is the lowest position of the first drainage groove (14), and the corresponding position of the second drainage groove (253) and the lowest corner (261) is the lowest position of the second drainage groove (253).

21. A range hood according to claim 18, characterized in that an oil guide (29) extending from the top plate (26) to the first drainage groove (14) or the second drainage groove (253) is provided adjacent to the plate member periphery.

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