CN216644309U - Noise reduction system and cigarette machine - Google Patents

Abstract

The utility model provides a noise reduction system and a range hood, relates to the technical field of kitchen electrical equipment, and aims to optimize the structure of a thin range hood to a certain extent and improve the noise reduction and absorption capacity of the range hood. The utility model provides a noise reduction system for a range hood, which comprises a first sound absorption assembly, a second sound absorption assembly and a fan sound absorption assembly; the fan sound-absorbing assembly is provided with an installation part, and a fan assembly of the range hood is arranged in the installation part; first sound subassembly sets up in the fan and inhales the rear end of sound subassembly, and the second is inhaled the relative first sound subassembly setting of sound subassembly, and is connected with the smoke guide plate of cigarette machine, and first sound subassembly, second are inhaled sound subassembly and fan and are inhaled the sound subassembly and enclose and establish into and inhale the sound space.

Description

Noise reduction system and cigarette machine

Technical Field

The utility model relates to the technical field of kitchen electrical equipment, in particular to a noise reduction system and a range hood.

Background

The range hood can solve the problem of oil smoke diffusion generated during cooking in a kitchen, and becomes one of necessary electrical appliances in a family. With the development of the range hood, the requirements for the range hood not only remain in the capability of absorbing the oil smoke, but also require the range hood to have smaller noise and smaller occupied space.

Therefore, the range hood at the present stage is gradually changed from the traditional side-draught fan to the light and thin type range hood, but the light and thin type range hood is greatly thinned, so that airflow rapidly flows in a narrow range hood space, the noise level is rapidly worsened, and the use experience of a user is greatly influenced.

Therefore, it is urgently needed to provide a noise reduction system and a range hood so as to solve the problems in the prior art to a certain extent.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a noise reduction system and a range hood, so that the structure of the thin range hood is optimized to a certain extent, and the noise reduction and sound absorption capacity of the range hood is improved.

The utility model provides a noise reduction system for a range hood, which comprises a first sound absorption assembly, a second sound absorption assembly and a fan sound absorption assembly, wherein the first sound absorption assembly is arranged on the first side of the range hood; the fan sound-absorbing assembly is provided with an installation part, and a fan assembly of the range hood is arranged in the installation part; first sound subassembly set up in the rear end of sound subassembly is inhaled to the fan, the sound subassembly is inhaled to the second is relative first sound subassembly sets up, and with the smoke deflector of cigarette machine is connected, first sound subassembly of inhaling the second sound subassembly and the sound subassembly is inhaled to the fan encloses and establishes into and inhales the sound space.

Wherein the first sound absorbing assembly comprises a cigarette machine back plate and a first sound absorbing member; be formed with the portion of holding on the cigarette machine back plate, first inhale the sound piece set up in the portion of holding, just first inhale the sound piece and deviate from one side of portion of holding with the sound subassembly is inhaled to the fan is laminated mutually.

Specifically, a positioning convex part is formed in the accommodating part, and a positioning hole is formed on the first sound-absorbing member corresponding to the positioning convex part.

Specifically, first inhale the sound piece with the fan is inhaled and is equipped with the mounting between the sound subassembly, just the mounting corresponds the fan is inhaled the hole setting of dodging of sound subassembly.

Further, first sound absorbing component still includes first apron and second apron, all be formed with a plurality of first sound absorbing perforation on first apron with the second apron, first apron with the second apron set up in on the first sound absorbing component, and be located the both sides of mounting.

The fan sound absorption assembly comprises a volute main body and an air duct rear plate; the volute body is annular and is provided with an air channel, the air channel rear plate is covered on one side, facing the first sound-absorbing assembly, of the volute body, and the air channel rear plate and the volute body form the mounting part; the volute main body and the air duct rear plate are evenly distributed with a plurality of second sound-absorbing through holes.

Specifically, the volute body comprises a volute, a first shroud and a second shroud; the first bounding wall with the second bounding wall set up relatively in the both sides of spiral case, just first bounding wall with all be equipped with the second between the second bounding wall and inhale the sound piece.

Compared with the prior art, the noise reduction system provided by the utility model has the following advantages:

the utility model provides a noise reduction system for a range hood, which comprises a first sound absorption assembly, a second sound absorption assembly and a fan sound absorption assembly; the fan sound absorption assembly is provided with an installation part, and a fan assembly of the range hood is arranged in the installation part; first sound subassembly sets up in the fan and inhales the rear end of sound subassembly, and the second is inhaled the relative first sound subassembly setting of sound subassembly, and is connected with the smoke guide plate of cigarette machine, and first sound subassembly, second are inhaled sound subassembly and fan and are inhaled the sound subassembly and enclose and establish into and inhale the sound space.

From this analysis can know, because the fan subassembly starts the back, the air gets into the cigarette machine by the mouth that advances of cigarette machine, consequently, this application inhales the sound subassembly through making the second and is connected with the smoke deflector, and first sound subassembly that inhales sets up in the rear end of fan subassembly, can make the noise only through advancing the mouth radiation and come out to, inhale the sound subassembly through the fan that sound subassembly and second were inhaled the sound subassembly setting at first sound subassembly of inhaling, can enclose to establish and form and inhale the sound space.

A part of the noise radiated from the smoke inlet is absorbed by the second sound-absorbing component, and a part of the noise is reflected to the first sound-absorbing component. The noise of the first sound-absorbing component is partially absorbed by the first sound-absorbing component, and the noise is partially reflected to the second sound-absorbing component again, so that the noise transmission of the whole range hood can be reduced to a certain extent through multiple times of absorption and reflection of the first sound-absorbing component and the second sound-absorbing component.

And, this application further utilizes the reflection phenomenon of sound, inhales the sound subassembly through making the fan and forms the installation department to set up the fan subassembly in the installation department, can be with constantly reflecting and absorbing to the noise of both sides diffusion, thereby further reduce the noise transmission, promote the absorptive capacity of structure to the noise of making an uproar.

In addition, the utility model also provides a smoke machine, which comprises a shell, the fan assembly, an electric appliance box and the noise reduction system; a smoke inlet is formed in one side of the shell, an air outlet is formed in the other side of the shell, the noise reduction system is arranged in the shell, the fan assembly is arranged in the sound absorption space of the noise reduction system, and the air outlet of the fan assembly is arranged corresponding to the air outlet of the shell; the electrical appliance box is arranged on one side in the shell and is positioned at a position, far away from the smoke inlet, of the shell.

The smoke guide plate is arranged at the position, corresponding to the smoke inlet, of the shell and is in rotating connection with the shell, and the second sound absorption assembly is connected with the smoke guide plate; the lateral part in the casing is equipped with pushing assembly, pushing assembly's one end with lead the cigarette board and be connected.

Specifically, still include the air outlet seat, be formed with the wind channel in the air outlet seat, the wind channel is followed the air-out direction in wind channel of sound subassembly is inhaled to the fan extends.

The application provides a cigarette machine through setting up noise reduction system in the casing, can enclose the noise that produces by advancing the mouth of cigarette and keep off in the sound space of inhaling that forms to through constantly reflecting and absorbing the noise, realize the noise reduction effect. Through setting up the electrical apparatus box in the lateral part of casing and keeping away from the position of advancing the cigarette mouth, can realize the control to the fan subassembly isotructure of cigarette machine on the one hand, on the other hand, when not occupying the sound space of inhaling that noise reduction system formed, make the space in the casing obtain make full use of.

Drawings

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

Fig. 1 is a schematic structural diagram of a first view angle of a noise reduction system according to an embodiment of the present invention;

FIG. 2 is an exploded view of a first perspective view of a first sound absorbing assembly in a noise reduction system provided by an embodiment of the present invention;

FIG. 3 is an exploded view of a first sound absorbing assembly of the noise reduction system from a second perspective according to an embodiment of the present disclosure;

FIG. 4 is a schematic diagram of a first sound absorption assembly and a fan sound absorption assembly of the noise reduction system according to an embodiment of the present disclosure;

FIG. 5 is a schematic view of the overall structure of a cigarette making machine according to an embodiment of the present invention;

figure 6 is a schematic diagram of the internal structure of a third viewing angle of a cigarette machine according to an embodiment of the utility model.

In the figure: 1-a first sound absorbing component; 101-a rear panel of a cigarette machine; 1011-a receptacle; 1012-locating the projection; 102-a first sound absorbing member; 1021-a location hole; 103-a fixing member; 1031-hollowed out hole; 104-a first cover plate; 1041-first sound absorbing perforation; 105-a second cover plate; 2-a second sound absorbing component; 3-a fan sound-absorbing component; 301-a volute body; 3011-air duct; 3012-volute; 3013-a first shroud; 3014-a second shroud; 3015-a second sound absorbing member; 302-duct back plate; 3021-second sound absorbing perforations; 3022-avoiding holes; 303-a mounting portion; 4-a shell; 401-smoke inlet; 402-air outlet; 403-smoke guide plate; 5-a fan assembly; 6-electrical box; 7-a pushing assembly; 8-air outlet seat.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The structure of the embodiments of the application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.

In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are usually placed in when used, and are only used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements indicated 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," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As used herein, the term "and/or" includes any one of the associated listed items and any combination of any two or more of the items.

For ease of description, spatial relationship terms such as "above … …," "upper," "below … …," and "lower" may be used herein to describe one element's relationship to another element as illustrated in the figures. Such spatial relationship terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.

The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. The singular forms also are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," and "having" specify the presence of stated features, quantities, operations, elements, components, and/or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and/or combinations thereof.

Variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, may be expected. Thus, the examples described herein are not limited to the particular shapes shown in the drawings, but include changes in shape that occur during manufacturing.

The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. Further, while the examples described herein have a variety of configurations, other configurations are possible, as will be apparent after understanding the disclosure of the present application. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.

As shown in fig. 1, the utility model provides a noise reduction system for a cigarette making machine, comprising a first sound absorption component 1, a second sound absorption component 2 and a fan sound absorption component 3; the fan sound absorption assembly 3 is provided with a mounting part 303, and a fan assembly 5 of the range hood is arranged in the mounting part 303; first inhale sound subassembly 1 and set up in the fan and inhale the rear end of sound subassembly 3, the second is inhaled the relative first sound subassembly 1 setting of inhaling of sound subassembly 2, and is connected with the smoke guide 403 of cigarette machine, and first sound subassembly 1, the second of inhaling is inhaled sound subassembly 2 and fan and is inhaled sound subassembly 3 and enclose and establish into and inhale the sound space.

Compared with the prior art, the noise reduction system provided by the utility model has the following advantages:

according to the noise reduction system provided by the utility model, after the fan assembly 5 is started, air enters the cigarette machine from the cigarette inlet 401 of the cigarette machine, so that the second sound absorption assembly 2 is connected with the cigarette guide plate 403, the first sound absorption assembly 1 is arranged at the rear end of the fan assembly 5, noise can be radiated out only through the cigarette inlet 401, and the sound absorption space can be formed in a surrounding manner through the fan sound absorption assemblies 3 arranged on the first sound absorption assembly 1 and the second sound absorption assembly 2.

The noise radiated from the smoke inlet 401 is partially absorbed by the second sound absorbing member 2 and partially reflected toward the first sound absorbing member 1. The noise reflected to the first sound-absorbing component 1 is partially absorbed by the first sound-absorbing component 1, and is partially reflected to the second sound-absorbing component 2 again, so that the noise transmission of the whole range hood can be reduced to a certain extent through multiple absorption and reflection of the first sound-absorbing component 1 and the second sound-absorbing component 2.

And, this application further utilizes the reflection phenomenon of sound, inhales the sound subassembly 3 through making the fan and forms installation department 303 to set up fan subassembly 5 in installation department 303, can be with constantly reflecting and absorbing to the noise of both sides diffusion, thereby further reduce the noise transmission, promote the absorptive capacity of structure to the noise of making an uproar.

It should be noted that, because the sound is reflected better in a narrower or smaller space, the noise reduction system of the present application is mainly used in a thin-type side smoking machine, and the noise reduction system and the thin-type side smoking machine are substantially in a depending relationship with each other. If the thickness of the cigarette machine is too large, sound can be dispersed in the transmission process, so that the function of multiple reflection cannot be realized. Therefore, through set up first sound subassembly 1, the second in slim side smoking machine and inhale sound subassembly 2 and fan and inhale sound subassembly 3 to form and inhale the sound space, thereby can enclose the noise and inhale in the sound space, and through constantly reflecting and absorbing, realize that the cigarette machine inhales the sound and fall the noise.

Therefore, the thin type side smoking machine provides a basis for realizing functions for the noise reduction system provided by the application, and the thickness of the side smoking machine can be reduced through the noise reduction system provided by the application, so that the side smoking machine becomes the thin type side smoking machine.

It should be added here that the second sound-absorbing assembly 2 (not shown in the figures) in the present application comprises a perforated plate and sound-absorbing cotton, the size and shape of the perforated plate and the sound-absorbing cotton are matched with the shape and size of the smoke guide plate 403, and the perforated plate presses the sound-absorbing cotton on the inner wall of the smoke guide plate 403. Inhale the sound that the cotton can promote the second and inhale sound subassembly 2 through the perforated plate and inhale the sound and fall the ability of making an uproar to, because the second is inhaled sound subassembly 2 and is connected with smoke deflector 403, consequently, establish the perforated plate on inhaling the sound cotton through the lid and can reduce the oil smoke to a certain extent and inhale the cotton pollution of sound.

As shown in fig. 2 in combination with fig. 3, the first sound-absorbing assembly 1 in the present application includes a rear plate 101 of a cigarette maker and a first sound-absorbing member 102; be formed with holding portion 1011 on the cigarette machine backplate 101, first sound piece 102 of inhaling sets up in holding portion 1011, and first sound piece 102 of inhaling deviates from one side and the fan of holding portion 1011 and inhale sound subassembly 3 and laminate mutually.

The portion 1011 on the cigarette machine back plate 101 in this application forms through the impression, and holds a 1011 orientation formation of inhaling sound subassembly 3 to keeping away from the fan, and first sound piece 102 of inhaling is a whole shape and size and the sound cotton of inhaling of holding a 1011 looks adaptation to can promote the first sound ability of inhaling of drawing the subassembly.

Because the cigarette machine of present stage all adopts wall-hanging installation, consequently, as shown in figure 3, the marginal position of cigarette machine back plate 101 in this application is formed with a plurality of cigarette machine string angles, and based on the visual angle of figure 3, the cigarette machine string angle is the arch with receiving portion 1011, and the cigarette machine string angle is the same with receiving portion 1011's protruding direction, and receiving portion 1011's protruding size is not more than the protruding size of cigarette machine string angle to can avoid receiving portion 1011 to influence the whole roughness of hanging the dress of cigarette machine.

Preferably, as shown in fig. 2 in combination with fig. 3, since the first sound-absorbing member 102 in this application is sound-absorbing cotton, and the sound-absorbing cotton is attached to the air duct rear plate 302 after assembly, when the fan assembly 5 is started, the sound-absorbing cotton is susceptible to play caused by the suction force of the fan assembly 5.

This application is through the location convex part 1012 that forms in accommodation part 1011 to correspond location convex part 1012 and be formed with locating hole 1021 on first sound piece 102 of inhaling, insert in locating hole 1021 through location convex part 1012, can fix a position first sound piece 102 of inhaling, thereby after the equipment, can avoid first sound piece 102 of inhaling to a certain extent to produce the drunkenness, reduce and inhale the sound effect, influence the problem of fan subassembly 5 operation even.

It should be added that the positioning convex part 1012 in the present application is formed by stamping, and firstly, a receiving part 1011 is stamped and formed on the side of the rear plate 101 of the range hood facing the fan sound-absorbing assembly 3, and then, the positioning convex part 1012 is stamped and formed on the side of the receiving part 1011 facing away from the fan sound-absorbing assembly 3.

Preferably, based on the visual angle of fig. 2, the size of location convex part 1012 in this application is unanimous with the degree of depth of holding portion 1011, and the first thickness of inhaling sound piece 102 is unanimous with the degree of depth of holding portion 1011, thereby after first sound piece 102 of inhaling is packed into in holding portion 1011, can guarantee to a certain extent that cigarette machine backplate 101 inhales the one side of sound subassembly 3 towards the fan and forms smooth contact surface with first sound piece 102 towards the fan one side of inhaling sound subassembly 3, and then promote the degree of laminating between first sound subassembly and the fan sound subassembly 3 of inhaling, avoid sheltering from the air current production, guarantee to inhale the sound effect.

Because the cotton is inhaled in the first piece 102 adoption of inhaling in this application, after fan subassembly 5 starts, can influence to a certain extent and inhale the cotton stability of sound. Therefore, as shown in fig. 2 and fig. 4, preferably, in the present application, the fixing member 103 is disposed between the first sound absorbing member 102 and the fan sound absorbing assembly 3, and the fixing member 103 is disposed corresponding to the avoiding hole 3022 of the fan sound absorbing assembly 3, so that the stability of the position of the sound absorbing cotton corresponding to the fan assembly 5 can be improved.

Fixing part 103 in this application promptly with inhale cotton fixed connection of sound, can avoid fan subassembly 5 to inhale the cotton problem of leading to the fan to damage in will inhaling the fan to a certain extent through fixing part 103.

It should be added here that a plurality of through holes 1031 are formed in the fixing member 103 in the present application, and the plurality of through holes 1031 are distributed along the circumferential direction of the fixing member 103. Through fretwork hole 1031, on the one hand can reduce the whole weight of mounting 103, and on the other hand, can reduce the separation to the air current flows. Further preferably, as shown in fig. 2 and fig. 4, the first sound-absorbing assembly 1 in the present application further includes a first cover plate 104 and a second cover plate 105, a plurality of first sound-absorbing through holes 1041 are formed on the first cover plate 104 and the second cover plate 105, and the first cover plate 104 and the second cover plate 105 are disposed on the first sound-absorbing member 102 and located at two sides of the fixing member 103.

On the one hand, can further will inhale sound cotton and separate with wind channel backplate 302 through first apron 104 and the second apron 105 that sets up in the both sides of mounting 103 to can further promote the stability of inhaling the sound cotton, reduce the risk of being inhaled by fan subassembly 5. On the other hand, because the first cover plate 104 and the second cover plate 105 are respectively provided with a plurality of first suction perforations, certain sound absorption and noise reduction functions can be realized through the first cover plate 104 and the second cover plate 105, so that the sound absorption and noise reduction capability of the whole structure is improved.

As shown in fig. 2 to 4, the sound absorption assembly 3 for a blower in the present application includes a volute main body 301 and a duct rear plate 302; the volute main body 301 is annular and is provided with an air duct 3011, the air duct rear plate 302 is arranged on one side, facing the first sound absorption assembly 1, of the volute main body 301 in a covering mode, and the air duct rear plate 302 and the volute main body 301 form an installation portion 303; a plurality of second sound-absorbing through holes 3021 are distributed on the scroll main body 301 and the duct rear plate 302.

As shown in fig. 2 to 4, in the present application, a plurality of second sound-absorbing through holes 3021 are distributed on both the duct back plate 302 and the scroll main body 301, and since the scroll main body 301 is annular and the duct 3011 and the mounting portion 303 are formed, the second sound-absorbing through holes 3021 formed can absorb noise in the duct 3011 to some extent, and can also absorb noise generated by the fan assembly 5 to some extent after the fan assembly 5 is mounted in the mounting portion 303.

As shown in fig. 1, the sound absorbing member 3 of the fan is provided to absorb and reflect the noise diffused to the left and right sides, and the first sound absorbing member 1 and the second sound absorbing member 2 are provided to absorb and reflect the noise diffused to the front and rear sides.

Preferably, as shown in fig. 4, the volute body 301 in the present application includes a volute 3012, a first shroud 3013 and a second shroud 3014; first bounding wall 3013 and second bounding wall 3014 set up in the both sides of spiral case 3012 relatively, and all be equipped with second sound absorbing piece 3015 between first bounding wall 3013 and the second bounding wall 3014.

The second sound absorbing piece 3015 in this application is also for absorbing the sound cotton to can set up the sound cotton in the both sides of scroll 3012 through first bounding wall 3013 and second bounding wall 3014 steadily. And the cotton can further promote the fan to inhale the sound of inhaling of the sound subassembly 3 and fall the ability of making an uproar through the sound of inhaling that sets up. Therefore, the noise reduction system that this application provided inhales the sound subassembly 2 and the fan through first sound subassembly 1, the second and inhales mostly that sound subassembly 3 formed and inhale the sound space, can absorb and reduce the produced noise of wind channel 3011 and fan subassembly 5 of cigarette machine to the at utmost.

In addition, as shown in fig. 5 in combination with fig. 6, the present application further provides a range hood, which comprises a shell 4, a fan assembly 5, an electrical box 6 and the above noise reduction system; a smoke inlet 401 is formed on one side of the shell 4, an air outlet 402 is formed on the other side of the shell 4, the noise reduction system is arranged in the shell 4, the fan assembly 5 is arranged in a sound absorption space of the noise reduction system, and the air outlet 402 of the fan assembly 5 is arranged corresponding to the air outlet 402 of the shell 4; the electrical box 6 is disposed at one side in the housing 4 and is located at a position far away from the smoke inlet 401 of the housing 4.

The application provides a cigarette machine through setting up noise reduction system in casing 4, can enclose the noise that produces by advancing mouth 401 and keep off in the sound space of inhaling that forms to through constantly reflecting and absorbing the noise, realize noise reduction effect. Through setting up electrical apparatus box 6 in the lateral part of casing 4 and keeping away from the position of advancing cigarette mouth 401, can realize the control to the fan subassembly 5 isotructure of cigarette machine on the one hand, on the other hand, when not occupying the sound space of inhaling that noise reduction system formed, make the space in the casing 4 obtain make full use of.

As shown in fig. 5 and fig. 6, a smoke guide plate 403 is disposed at a position of the casing 4 corresponding to the smoke inlet 401, the smoke guide plate 403 is rotatably connected to the casing 4, and the second sound absorbing assembly 2 is connected to the smoke guide plate 403; the side part in the shell 4 is provided with a pushing assembly 7, and one end of the pushing assembly 7 is connected with the smoke guide plate 403.

The pushing assembly 7 in this application is electric putter, through setting up pushing assembly 7 in one side of casing 4, and pushing assembly 7 and electrical apparatus box 6 are located the both sides in casing 4 respectively in this application, can utilize the space in the casing 4 to the maximize, and through the electric putter who sets up, can realize leading cigarette board 403 to the automatic switching of advancing cigarette mouth 401.

Specifically, as shown in fig. 4 and fig. 5, the range hood provided by the present invention further includes an air outlet seat 8, wherein an air guide channel is formed in the air outlet seat 8, and the air guide channel extends along an air outlet direction of the air channel 3011 of the fan sound absorption assembly 3.

For guaranteeing that the air current can smooth flow, consequently, the wind-guiding way that forms in the air outlet seat 8 in this application extends along the wind channel 3011's of the sound subassembly 3 of fan air outlet direction, promptly, as shown in fig. 4 with reference to fig. 5, the molded lines direction of the air outlet 402 of spiral case 3012 is further extended along the both sides of air outlet seat 8 in this application, form the slope structure, thereby can reduce stopping to the air current, make the circulation of air current more smooth and easy, reduce the windage, and then can reduce the production of noise to a certain extent.

Preferably, the height of the outlet seat 8 in this application is not less than 1.5 times the width of the outlet 402 of the volute 3012, and is greater than the outlet width of the outlet seat 8, further greater than the thickness of the range hood. Since the outlet seat 8 is raised, the airflow can be sufficiently and uniformly passed through the air guide duct, thereby reducing flow unevenness and further reducing noise of the airflow.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. A noise reduction system is used for a range hood and is characterized by comprising a first sound absorption assembly, a second sound absorption assembly and a fan sound absorption assembly;

the fan sound-absorbing assembly is provided with an installation part, and a fan assembly of the range hood is arranged in the installation part;

first sound subassembly set up in the rear end of sound subassembly is inhaled to the fan, the sound subassembly is inhaled to the second is relative first sound subassembly sets up, and with the smoke deflector of cigarette machine is connected, first sound subassembly of inhaling the second sound subassembly and the sound subassembly is inhaled to the fan encloses and establishes into and inhales the sound space.

2. The noise reduction system of claim 1, wherein the first sound absorbing assembly includes a machine back panel and a first sound absorbing member;

be formed with the portion of holding on the cigarette machine back plate, first inhale the sound piece set up in the portion of holding, just first inhale the sound piece and deviate from one side of portion of holding with the sound subassembly is inhaled to the fan is laminated mutually.

3. The noise reduction system according to claim 2, wherein a positioning protrusion is formed in the receiving portion, and a positioning hole is formed in the first sound absorbing member corresponding to the positioning protrusion.

4. The noise reduction system of claim 2, wherein a fixing member is disposed between the first sound absorbing member and the sound absorbing assembly of the fan, and the fixing member is disposed corresponding to the avoiding hole of the sound absorbing assembly of the fan.

5. The noise reduction system of claim 4, wherein the first sound absorbing assembly further comprises a first cover plate and a second cover plate, each of the first cover plate and the second cover plate having a plurality of first sound absorbing perforations formed thereon, the first cover plate and the second cover plate being disposed on the first sound absorbing member and on both sides of the fixing member.

6. The noise reduction system of claim 1, wherein the fan sound absorption assembly includes a volute body and a duct back plate;

the volute body is annular and is provided with an air channel, the air channel rear plate is covered on one side, facing the first sound-absorbing assembly, of the volute body, and the air channel rear plate and the volute body form the mounting part;

the volute main body and the air duct rear plate are evenly distributed with a plurality of second sound-absorbing through holes.

7. The noise reduction system of claim 6, wherein the volute body comprises a volute, a first shroud, and a second shroud;

the first bounding wall with the second bounding wall set up relatively in the both sides of spiral case, just first bounding wall with all be equipped with the second between the second bounding wall and inhale the sound piece.

8. A cigarette maker comprising a housing, said fan assembly, an electrical box, and the noise reduction system of any one of claims 1 to 7;

a smoke inlet is formed in one side of the shell, an air outlet is formed in the other side of the shell, the noise reduction system is arranged in the shell, the fan assembly is arranged in the sound absorption space of the noise reduction system, and the air outlet of the fan assembly is arranged corresponding to the air outlet of the shell;

the electrical appliance box is arranged on one side in the shell and is positioned at a position, far away from the smoke inlet, of the shell.

9. The cigarette machine according to claim 8, wherein a cigarette guide plate is arranged on the shell at a position corresponding to the cigarette inlet, the cigarette guide plate is rotatably connected with the shell, and the second sound-absorbing assembly is connected with the cigarette guide plate;

the lateral part in the casing is equipped with pushing assembly, pushing assembly's one end with lead the cigarette board and be connected.

10. The cigarette machine of claim 8, further comprising an air outlet seat, wherein an air guide channel is formed in the air outlet seat, and the air guide channel extends along the air outlet direction of the air channel of the sound-absorbing component of the fan.

Images