CN217604197U - Smoke blocking structure and range hood - Google Patents

Abstract

The utility model relates to a range hood's technical field, concretely relates to keep off cigarette structure and range hood. The utility model provides a keep off cigarette structure for range hood, range hood is provided with first air intake including collection cigarette housing and the fan pipeline subassembly that sets up in collection cigarette housing on the collection cigarette housing, is provided with the second air intake on the fan pipeline subassembly, keeps off the cigarette structure and sets up in collection cigarette housing, keeps off the cigarette structure and includes: the smoke blocking piece comprises a bottom plate arranged between the fan pipeline assembly and the first air inlet and a surrounding plate arranged on the bottom plate and positioned on one side, facing the first air inlet, of the bottom plate; a smoke blocking cavity communicated with the first air inlet is formed between the bottom plate and the enclosing plate, and an air guide opening is formed in the bottom plate. The smoke blocking cavity forces the oil smoke to flow into the second air inlet through the air guide opening, the oil smoke is fully shielded, the protection effect is improved, the noise reduction structure absorbs and reduces the noise of the flowing noise in the smoke blocking cavity and the noise radiated outwards by the fan pipeline assembly, and the user experience is improved.

Description

Smoke blocking structure and range hood

Technical Field

The utility model relates to a range hood's technical field, concretely relates to keep off cigarette structure and range hood.

Background

The range hood has become one of the indispensable kitchen household electrical appliances in modern families. The range hood of the top suction type utilizes the principle that hot gas rises to suck and discharge the naturally rising oil smoke generated during cooking, and has more and more extensive application due to the advantages of neatness, lightness, small occupied space and the like; the side-draft range hood is far away by vortex wind pressure, most of the oil smoke close to the cooking bench is absorbed in an arc form, the adverse effect on the human health can be reduced, and the suction effect of the power source cannot be reduced basically because the power source is close to the cooking bench.

The existing side-suction range hood is generally provided with an air inlet on a panel of a shell, a fan pipeline component, an electrical component and an electric push rod structure are arranged in the shell, in order to avoid that oil smoke water vapor entering the shell from the air inlet influences the electrical component and the electric push rod structure, a U-shaped smoke baffle is usually arranged on the fan pipeline component, the bottom wall of the U-shaped smoke baffle is connected with the fan pipeline component, an air guide opening communicated with the fan pipeline component is formed, and the oil smoke water vapor is blocked by the U-shaped smoke baffle.

However, the smoke baffle plate with the structure can not sufficiently shield oil smoke water vapor, part of the oil smoke water vapor can still affect the electric appliance assembly and the electric push rod structure, the protection effect is poor, and meanwhile, when the range hood works, turbulent airflow can be generated in an air inlet channel formed between the smoke baffle plate and an air inlet to cause flowing noise and fan pipeline assemblies to radiate noise outwards through the air guide opening, so that the customer experience is seriously affected.

SUMMERY OF THE UTILITY MODEL

The utility model discloses (one) the technical problem that solve is: the smoke baffle is insufficient in shielding oil smoke water vapor, the protection effect is poor, and meanwhile, when the range hood works, the noise is large, and the customer experience is seriously influenced.

(II) technical scheme

In order to solve the technical problem, an aspect of the utility model provides a keep off cigarette structure for range hood, range hood including collection cigarette housing with set up in fan pipeline subassembly in the collection cigarette housing, be provided with first air intake on the collection cigarette housing, be provided with the second air intake on the fan pipeline subassembly, keep off the cigarette structure set up in the collection cigarette housing, it includes to keep off the cigarette structure: the smoke blocking part comprises a bottom plate arranged between the fan pipeline assembly and the first air inlet and a surrounding plate arranged on the bottom plate and positioned on one side of the bottom plate, which faces the first air inlet;

a smoke blocking cavity communicated with the first air inlet is formed between the bottom plate and the enclosing plate, and an air guide opening communicated with the second air inlet and the smoke blocking cavity is formed in the bottom plate.

According to an embodiment of the present invention, a noise reduction area is provided on the bottom plate, and/or a noise reduction area is provided on the surrounding plate;

the noise reduction region is provided with the noise reduction structure.

According to the utility model discloses an embodiment, the structure of making an uproar falls including set up in fall the hole of making an uproar on the district of making an uproar.

According to the utility model discloses an embodiment, fall structure of making an uproar still including set up in fall the grease proofing hydrophobic sound piece of inhaling in the district of making an uproar, grease proofing hydrophobic sound piece of inhaling is located keep off the cigarette piece with between the fan pipeline subassembly.

According to the utility model discloses an embodiment, the bottom plate is including being used for the installation fan duct assembly's installation department, just seted up on the installation department the wind-guiding mouth.

According to the utility model discloses an embodiment, the bottom plate still includes left plate body and right plate body, left side plate body is located the left side of installation department, right side plate body is located the right side of installation department, just be provided with on the plate body of a left side fall the district of making an uproar, and/or be provided with on the plate body of the right side fall the district of making an uproar.

According to the utility model discloses an embodiment, the bottom plate orientation one side of bounding wall is sunken to be formed the installation department, just the installation department is formed with and is used for the installation fan duct assembly's installation cavity, the wind-guiding mouth is located at the bottom of the chamber of installation cavity.

According to an embodiment of the utility model, the side wall comprises an upper side plate, a left side plate, a lower side plate and a right side plate, and the upper side plate, the left side plate, the lower side plate and the right side plate are sequentially connected end to form the side wall;

and the noise reduction area is arranged on any one or more of the upper side plate, the left side plate, the lower side plate and the right side plate.

According to one embodiment of the utility model, the aperture of the noise reduction hole is D, and D is more than or equal to 1mm and less than or equal to 10mm;

and/or a plurality of noise reduction holes are arranged, the distance between every two adjacent noise reduction holes is S, and S is larger than or equal to 2mm and smaller than or equal to 30mm.

Another embodiment of the utility model provides a range hood, include the structure of keeping off the cigarette.

The utility model has the advantages that: the utility model provides a keep off cigarette structure for range hood, range hood is provided with first air intake including collection cigarette housing and the fan pipeline subassembly that sets up in collection cigarette housing on the collection cigarette housing, is provided with the second air intake on the fan pipeline subassembly, keeps off the cigarette structure and sets up in collection cigarette housing, keeps off the cigarette structure and includes: the smoke blocking part comprises a bottom plate arranged between the fan pipeline assembly and the first air inlet and a surrounding plate arranged on the bottom plate and positioned on one side of the bottom plate, which faces the first air inlet; a smoke blocking cavity communicated with the first air inlet is formed between the bottom plate and the enclosing plate, and an air guide opening communicated with the second air inlet and the smoke blocking cavity is formed in the bottom plate.

Oil smoke steam and the like flow into the smoke collection housing through the first air inlet, the bottom plate and the surrounding plate together shield the smoke collection housing, a smoke blocking cavity for blocking the oil smoke steam is formed, the oil smoke steam is forced to enter the smoke blocking cavity and flow into the second air inlet through the air guide opening, and then is discharged by the fan pipeline assembly, so that the oil smoke steam is fully shielded, and the protection effect is improved. Meanwhile, when the range hood works, due to the fact that the noise reduction structure is arranged on the smoke blocking piece, flowing noise caused by turbulent airflow in the smoke blocking cavity and noise of the fan pipeline assembly radiated outwards through the air guide opening can be absorbed and reduced, and user experience is improved.

Drawings

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

Fig. 1 is an exploded view of an installation of a smoke barrier structure and a fan duct assembly according to an embodiment of the present invention;

fig. 2 is a right side view of a smoke barrier and blower duct assembly according to an embodiment of the present invention;

fig. 3 is a bottom side view of a smoke barrier and blower duct assembly according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a range hood according to an embodiment of the present invention.

Icon: 1-a smoke barrier structure; 11-a smoke barrier; 111-a base plate; 1111-an installation part; 1112-air guide port; 1113-fixing through hole; 1114-a left plate body; 1115-a right plate body; 112-a coaming; 1121-upper side plate; 1122-left side panel; 1123-lower side plate; 1124-right side plate; 113-a smoke blocking cavity; 12-noise reduction holes; 13-oil-proof hydrophobic sound absorbing member;

2-smoke collecting cover shell; 21-a first air inlet;

3-a fan duct assembly; 31-a volute; a 32-worm gear; 33-a second air inlet.

Detailed Description

In order to make the above objects, features and advantages of the present invention more clearly understandable, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description, and the embodiments and features of the embodiments of the present invention may be combined with each other without conflict. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 to 4, an embodiment of the utility model provides a keep off cigarette structure 1 for range hood, range hood include collection cigarette housing 2 and set up fan pipeline subassembly 3 in collection cigarette housing 2, are provided with first air intake 21 on the collection cigarette housing 2, are provided with second air intake 33 on the fan pipeline subassembly 3, keep off cigarette structure 1 and set up in collection cigarette housing 2, keep off cigarette structure 1 and include: the fan comprises a smoke blocking piece 11 and a noise reduction structure arranged on the smoke blocking piece 11, wherein the smoke blocking piece 11 comprises a bottom plate 111 arranged between the fan pipeline assembly 3 and the first air inlet 21 and a surrounding plate 112 arranged on the bottom plate 111 and positioned on one side, facing the first air inlet 21, of the bottom plate 111;

a smoke blocking cavity 113 communicated with the first air inlet 21 is formed between the bottom plate 111 and the enclosing plate 112, and an air guide port 1112 communicated with the second air inlet 33 and the smoke blocking cavity 113 is formed on the bottom plate 111.

In this embodiment, the smoke blocking structure 1 may be connected to the fan pipeline assembly 3, or connected to the smoke collecting enclosure 2, the bottom plate 111 divides the interior of the smoke collecting enclosure 2 into an air inlet cavity located at the front side of the bottom plate 111 and an installation cavity located at the rear side of the bottom plate 111, the fan pipeline assembly 3 is located in the installation cavity, the range hood further includes an electrical box and an electric push rod structure which are arranged in the installation cavity, the smoke collecting enclosure 2 has a panel and a back plate, the panel is provided with a first air inlet 21, a smoke guide plate is arranged at the first air inlet 21, and the smoke guide plate opens or closes the first air inlet 21 through the electric push rod structure, when the range hood works, the first air inlet 21 opens, oil smoke vapor and the like flow into the smoke collecting enclosure 2 through the first air inlet 21, the bottom plate 111 and the surrounding plate 112 together block the smoke collecting enclosure 2, and form the smoke blocking cavity 113 which encloses the oil smoke vapor, the oil smoke vapor is forced to enter the smoke blocking cavity 113 and flow into the second air inlet 33 through the air guide port 1112, and then is discharged by the fan pipeline assembly 3, thereby achieving full blocking of oil smoke and improving the protection effect. Meanwhile, when the range hood works, as the smoke blocking piece 11 is provided with the noise reduction structure, the flowing noise caused by the turbulent airflow in the smoke blocking cavity 113 and the noise radiated outwards by the fan pipeline component 3 through the air guide port 1112 can be absorbed and reduced, and the user experience is improved.

According to an embodiment of the present invention, a noise reduction area is provided on the bottom plate 111, and/or a noise reduction area is provided on the surrounding plate 112; and a noise reduction structure is arranged on the noise reduction area.

In this embodiment, the bottom plate 111 is in a flat plate shape, the noise reduction region may be disposed on the bottom plate 111, and the noise reduction region may also be disposed on the enclosing plate 112, preferably, the noise reduction regions are disposed on both the bottom plate 111 and the enclosing plate 112, and the noise reduction regions are provided with noise reduction structures, so that the bottom plate 111 and the enclosing plate 112 can block smoke, and the noise reduction structures on the bottom plate 111 and the enclosing plate 112 can also achieve noise reduction, and have a compact structure and space saving.

According to the utility model discloses an embodiment, the structure of making an uproar falls including setting up the hole of making an uproar 12 of falling on the district of making an uproar falls. Simple structure, noise reduction effect is good, and the hole 12 of making an uproar of falling simultaneously is covered with the district of making an uproar of falling, further improves noise reduction effect.

According to the utility model discloses an embodiment, the structure of making an uproar still includes to set up the grease proofing hydrophobic sound piece of inhaling 13 that falls on the district of making an uproar, and grease proofing hydrophobic sound piece of inhaling 13 is located and keeps off between cigarette piece 11 and the fan pipeline subassembly 3.

In this embodiment, the oil-proof, water-repellent and sound-absorbing member 13 is located on the back side of the smoke-blocking member 11, and is matched with the noise-reducing region in shape and size, so as to absorb and reduce the noise caused by the flowing noise caused by the turbulent airflow in the smoke-blocking cavity 113 and the noise radiated outwards by the fan duct assembly 3 through the air guide opening 1112.

Wherein, the oilproof hydrophobic sound absorbing piece 13 can be the sound absorption cotton, can also be the abatvoix that the oilproof hydrophobic material made, and this embodiment is preferred, and the oilproof hydrophobic sound absorbing piece 13 is for inhaling the sound cotton, and the effectual and cost of noise absorption is lower.

According to the utility model discloses an embodiment, bottom plate 111 includes the installation department 1111 that is used for installing fan duct assembly 3, and has seted up wind-guiding mouth 1112 on the installation department 1111.

In this embodiment, the bottom plate 111 is located between the fan duct assembly 3 and the first air inlet 21, wherein the bottom plate 111 may be connected to the fan duct assembly 3, or may be disposed at intervals. Preferably, fan duct assembly 3 direct mount avoids having the interval between fan duct assembly 3 and the bottom plate 111 on the installation department 1111 of bottom plate 111, can reduce whole occupation space, makes range hood can be thinner, and occupation space still less, and grease proofing hydrophobic sound piece 13 of inhaling sets up in the middle of bottom plate 111 and fan duct assembly 3 simultaneously, can also play and alleviate the vibration of fan duct assembly 3, absorbs fan duct assembly 3's radiation noise. The fan pipeline assembly 3 comprises a volute 31 and a worm wheel 32 arranged in the volute 31, a second air inlet 33 is formed in the volute 31 and corresponds to the worm wheel 32, the mounting portion 1111 is provided with a mounting surface, a fixing through hole 1113 and an air guide opening 1112 are formed in the mounting surface, the volute 31 is mounted on the mounting surface, the volute 31 penetrates through the fixing through hole 1113 through bolts and is connected with the volute 31, the air guide opening 1112 corresponds to the second air inlet 33, the fan pipeline assembly 3 is fixed on the mounting portion 1111, and the fan pipeline assembly is convenient to mount and dismount and simple in structure. It should be noted that, in this embodiment, other connection structures may also be disposed on the mounting surface to cooperate with the volute casing 31 to achieve connection and fixation, and the connection structure is not limited to the fixing through hole 1113, and may also be a snap structure or a positioning structure.

According to the utility model discloses an embodiment, bottom plate 111 still includes left plate body 1114 and right plate body 1115, and left plate body 1114 is located the left side of installation department 1111, and right plate body 1115 is located the right side of installation department 1111, and is provided with on the left plate body 1114 and falls the district of making an uproar, and/or is provided with on the right plate body 1115 and falls the district of making an uproar.

In this embodiment, left plate body 1114 and right plate body 1115 can block oil smoke steam and get into the space between spiral case 31 and the collection cigarette housing 2, avoid oil smoke steam and the electrical apparatus box and the electric putter contact of here, improve the protection effect, can set up the district of making an uproar of falling on left plate body 1114 simultaneously, improve the left noise reduction effect of installation department 1111, also can set up the district of making an uproar of falling on right plate body 1115, improve the noise reduction effect on installation department 1111 right side, and is preferred, all be provided with the district of making an uproar of falling on left plate body 1114 and right plate body 1115, the noise reduction effect is better this moment.

According to the utility model discloses an embodiment, bottom plate 111 is sunken towards one side of bounding wall 112 and is formed installation department 1111, and installation department 1111 is formed with the installation cavity that is used for installing fan duct assembly 3, and wind-guiding mouth 1112 is located the chamber bottom of installation cavity.

In this embodiment, bottom plate 111 wholly is the several types of form, and interior concave part is installation department 1111, and both sides are left plate body 1114 and right plate body 1115, wherein forms the pit between left plate body 1114 and right plate body 1115 and bounding wall 112 and the installation department 1111, can increase on the one hand and keep off 113 spaces in cigarette chamber, improve flow area, reduce the resistance of admitting air, guarantee first air intake 21 and keep off the air inlet space between the cigarette chamber 113 sufficient, prevent the air current rush phenomenon that the air current caused because of flow channel is narrow. On the other hand, an acoustic pit structure is formed, and compared with a plane design, the pit design can block noise waves, so that the noise is repeatedly reflected and absorbed in the smoke blocking cavity 113, and the noise is reduced.

Preferably, the depth of the mounting portion 1111 is less than or equal to the thickness of the fan duct assembly 3. The occupied space can be further reduced, and the range hood can be thinner.

According to an embodiment of the present invention, the side wall comprises an upper side plate 1121, a left side plate 1122, a lower side plate 1123, and a right side plate 1124, wherein the upper side plate 1121, the left side plate 1122, the lower side plate 1123, and the right side plate 1124 are sequentially connected end to form a side wall 112;

a noise reduction zone is provided on any one or more of the upper, left, lower and right side plates 1121, 1122, 1123, 1124.

The enclosing plate 112 can be integrally formed, has a stable structure and is convenient to manufacture, and the upper side plate 1121, the left side plate 1122, the lower side plate 1123 and the right side plate 1124 can be separately arranged for connection, so that the disassembly and maintenance are convenient; the coaming 112 and the bottom plate 111 can be integrally formed, so that the structure is stable, the manufacture is convenient, and the coaming and the bottom plate can be arranged in a split mode and connected, so that the disassembly and the maintenance are convenient.

This embodiment is preferred, bounding wall 112 is the rectangle and with bottom plate 111 integrated into one piece, installation department 1111 is located the middle part of bounding wall 112, the bounding wall 112 and the three-dimensional cigarette structure 1 that keeps off of bottom plate 111 integrated into one piece formation rail of rectangle structure, can be better match with collection cigarette housing 2, oil smoke steam etc. flows in collection cigarette housing 2 through first air intake 21, keep off cigarette structure 1 and collection cigarette housing 2 formation because of the rail is three-dimensional and shelter from the blocking wall, force the oil smoke to flow in fan pipeline assembly 3 inside through wind-guiding opening 1112, discharge after worm wheel 32 accelerates, the realization fully shelters from oil smoke steam, prevent effectively that oil smoke steam from soaking electrical apparatus box and the electric putter structure of collection cigarette housing 2 rear end, play effectual guard action, overall structure is simple simultaneously, it is effectual wholly to keep off the cigarette. Simultaneously go up curb plate 1121, left side board 1122, all be provided with the district of making an uproar on lower side plate 1123 and the right side board 1124, all set up the district of making an uproar on left plate body 1114 and the right plate body 1115, and the district of making an uproar equipartition is full of last curb plate 1121, left side board 1122, lower side plate 1123, right side plate 1124, left plate body 1114 and right plate body 1115, the shape and the size of grease proofing hydrophobic sound absorbing piece 13 are the same with the part that sets up the district of making an uproar of keeping off on the cigarette piece 11 this moment, and connect in the dorsal part of keeping off cigarette piece 11 through buckle structure or other connection structure, the part that sets up the district of making an uproar on grease proofing hydrophobic sound absorbing piece 13 and the cigarette piece 11 forms the sound absorbing and insulating board, can utilize sound absorbing and insulating board all around, the enclosure of noise wave, make noise in the enclosure repeat reflection-absorption, reduce the noise.

In this embodiment, the upper side plate 1121 is provided with a noise reduction area and forms an upper noise reduction part a with the oil-repellent sound-absorbing member 13, the lower side plate 1123 is provided with a noise reduction area and forms a lower noise reduction part B with the oil-repellent sound-absorbing member 13, the left side plate 1122 is provided with a noise reduction area and forms a left side noise reduction part C with the oil-repellent sound-absorbing member 13, the left plate 1114 is provided with a noise reduction area and forms a left noise reduction part D with the oil-repellent sound-absorbing member 13, the right plate 1115 is provided with a noise reduction area and forms a right noise reduction part E with the oil-repellent sound-absorbing member 13 and forms a right side noise reduction part F with the oil-repellent sound-absorbing member 13, wherein the specific setting can be any combination in ABCDEF, such as AB/CF/DB/CDEF/CAF/DCAEF/CDBEF/CDEF, etc., and the number and the aperture of the noise reduction holes 12 in the noise reduction area can also be adjusted according to actual working conditions, and the adaptability is strong. In the spatial position, the left noise reduction part D and the right noise reduction part E are behind the mounting surface, on one hand, the flow passage area is increased, and the air inlet resistance is reduced. On the other hand, an acoustic pit structure is formed, and noise is reduced.

According to an embodiment of the present invention, the diameter of the noise reduction hole 12 is D, and D is 1mm or more and 10mm or less; the noise reduction holes 12 are micro-perforated holes, so that the noise reduction effect is improved.

And/or a plurality of noise reduction holes 12 are arranged, the distance between every two adjacent noise reduction holes 12 is S, and S is larger than or equal to 2mm and smaller than or equal to 30mm. The smoke blocking effect of the smoke blocking piece 11 is not affected, and the noise reduction effect is improved.

An embodiment of the utility model provides a range hood, the fender cigarette structure 1 of including.

According to an embodiment of the present invention, the upper side plate 1121 is provided with a space-avoiding concave arc corresponding to the air guiding opening 1112. Because the volute casing 31 has an air outlet channel, in order to facilitate installation and not affect air outlet, the upper side of the installation portion 1111 is an opening, and meanwhile, in order not to affect air inlet of the second air inlet 33 of the volute casing 31, the upper side plate 1121 is recessed upwards corresponding to the air guide port 1112 to form a clearance concave arc, so that air inlet shielding is avoided, the structure is simple, and the air inlet effect between the air guide port 1112 and the second air inlet 33 is improved.

The embodiment of the utility model provides a range hood, including foretell cigarette structure 1 that keeps off, because this integrated level that keeps off cigarette structure 1 is high, small, can integrate with range hood very conveniently, make range hood whole thinner.

In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which 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 should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; the communication may be direct, indirect via an intermediate medium, or internal to both elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The above description is only a preferred embodiment of the present invention, and should not be construed as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims (10)

1. The utility model provides a keep off cigarette structure for range hood, range hood including collection cigarette housing (2) with set up in fan pipeline subassembly (3) in collection cigarette housing (2), be provided with first air intake (21) on collection cigarette housing (2), be provided with second air intake (33) on fan pipeline subassembly (3), keep off cigarette structure (1) set up in collection cigarette housing (2), its characterized in that, keep off cigarette structure (1) and include: the fan comprises a smoke blocking piece (11) and a noise reduction structure arranged on the smoke blocking piece (11), wherein the smoke blocking piece (11) comprises a bottom plate (111) arranged between the fan pipeline assembly (3) and the first air inlet (21) and a surrounding plate (112) arranged on the bottom plate (111) and located on one side, facing the first air inlet (21), of the bottom plate (111);

a smoke blocking cavity (113) communicated with the first air inlet (21) is formed between the bottom plate (111) and the enclosing plate (112), and an air guide opening (1112) communicated with the second air inlet (33) and the smoke blocking cavity (113) is formed in the bottom plate (111).

2. A smoke stop structure according to claim 1, wherein said bottom panel (111) is provided with a noise reduction zone and/or said skirt panel (112) is provided with a noise reduction zone;

the noise reduction region is provided with the noise reduction structure.

3. A smoke stop according to claim 2, wherein said noise reducing structure comprises noise reducing apertures (12) provided on said noise reducing zone.

4. The structure of keeping off smoke of claim 3, characterized in that, the structure of making an uproar still includes the oil proofing hydrophobic sound absorbing piece (13) that sets up on the district of making an uproar that falls, oil proofing hydrophobic sound absorbing piece (13) are located keep off smoke (11) with fan pipe assembly (3) between.

5. The smoke stop structure according to claim 2, wherein the bottom plate (111) comprises an installation part (1111) for installing the fan duct assembly (3), and the air guide opening (1112) is formed in the installation part (1111).

6. The structure of keeping off smoke of claim 5, characterized in that bottom plate (111) still includes left plate body (1114) and right plate body (1115), left plate body (1114) is located the left side of installation department (1111), right plate body (1115) is located the right side of installation department (1111), just be provided with on left plate body (1114) fall the noise zone, and/or be provided with on right plate body (1115) fall the noise zone.

7. The smoke stop structure according to claim 5, wherein the bottom plate (111) is recessed towards one side of the enclosing plate (112) to form the mounting portion (1111), the mounting portion (1111) is formed with a mounting cavity for mounting the fan duct assembly (3), and the air guide port (1112) is located at the bottom of the mounting cavity.

8. A smoke stop structure according to any one of claims 2-7, comprising an upper side plate (1121), a left side plate (1122), a lower side plate (1123) and a right side plate (1124), and said upper side plate (1121), said left side plate (1122), said lower side plate (1123) and said right side plate (1124) are connected end to end in sequence to form said enclosure (112);

the noise reduction area is arranged on any one or more of the upper side plate (1121), the left side plate (1122), the lower side plate (1123) and the right side plate (1124).

9. A smoke stop structure according to claim 3, wherein the diameter of said noise reduction holes (12) is D, and D is 1mm or more and 10mm or less;

and/or a plurality of noise reduction holes (12) are arranged, the distance between every two adjacent noise reduction holes (12) is S, and S is larger than or equal to 2mm and smaller than or equal to 30mm.

10. A range hood, characterized in that it comprises a smoke-stop structure (1) according to any one of claims 1 to 9.

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