CN109162968B

CN109162968B - Silencer and range hood

Info

Publication number: CN109162968B
Application number: CN201810888037.0A
Authority: CN
Inventors: 谭柏豪; 陈昊; 刘伟龙; 季俊生; 蒋济武
Original assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Priority date: 2018-08-06
Filing date: 2018-08-06
Publication date: 2021-01-08
Anticipated expiration: 2038-08-06
Also published as: CN109162968A

Abstract

The invention discloses a silencer and a range hood, wherein the silencer comprises: the silencing device comprises a silencing barrel, a fan and a control device, wherein the silencing barrel is provided with an air inlet end, an air outlet end and a silencing channel communicated with the air inlet end and the air outlet end; the baffle plate is arranged in the silencing passage and divides the silencing passage into a plurality of silencing sub-passages arranged along the length direction of the silencing barrel. The technical scheme of the invention reduces the noise of the range hood.

Description

Silencer and range hood

Technical Field

The invention relates to the technical field of silencers, in particular to a silencer and a range hood.

Background

The existing range hood generally discharges smoke upwards, and under the action of a fan, the smoke collected by the smoke collecting hood is discharged outdoors. Because of strong air draft and air supply of the fan, a large amount of noise is generated in the working process. In order to reduce noise, people have increased silencing equipment between fan subassembly and collection petticoat pipe, however, because current silencing equipment effect is not good for the user still receives the interference of powerful noise, is unfavorable for the user to inhaling the use of range hood.

Disclosure of Invention

The invention mainly aims to provide a silencer, aiming at improving the silencing effect of the silencer.

In order to achieve the above object, the present invention provides a silencer, including:

the silencing device comprises a silencing barrel, a fan and a control device, wherein the silencing barrel is provided with an air inlet end, an air outlet end and a silencing channel communicated with the air inlet end and the air outlet end;

the baffle plate is arranged in the silencing passage and divides the silencing passage into a plurality of silencing sub-passages arranged along the length direction of the silencing barrel.

Preferably, the inner wall of the sound attenuation sub-channel is provided with a sound absorption layer.

Preferably, the number of the silencing sub-channels is 2-8.

Preferably, the baffle plate is detachably connected with the silencing pot.

Preferably, the air inlet end and/or the air outlet end of the silencing barrel are/is provided with mounting flanges, one end of the partition plate is provided with a fixing plate, one end of the edge of the fixing plate is connected with the end of the partition plate, and the other end of the edge of the fixing plate is detachably connected with the mounting flanges.

Preferably, the fixing plate extends along the width direction of the partition plate, and/or the fixing plate and the partition plate are integrally formed.

Preferably, the two ends of the partition board are both provided with fixing plates, and the fixing plates at the two ends of the partition board are respectively connected with the mounting flanges at the air inlet end and the air outlet end of the silencing barrel.

Preferably, the end part of the air inlet end or the air outlet end of the silencing barrel, which extends out of the partition plate, is connected with the mounting flange;

the silencer also comprises a connecting plate, one end of the connecting plate is connected with the mounting flange of the air outlet end or the air inlet end of the silencing barrel, and the other end of the connecting plate is connected with the corresponding fixing plate.

Preferably, the number of the partition plates is plural, and the plural partition plates extend from the inner wall of the sound deadening channel to the inside of the sound deadening channel and are connected.

Preferably, the side edge of the partition board along the length direction is provided with a fastening flange, and the fastening flange is connected with the adjacent partition board through a fastening piece.

Preferably, the silencer further comprises a flow guide support, the flow guide support is connected with the air inlet end or the end of the partition plate, and a flow guide inclined surface is arranged on one side, back to the silencing barrel, of the flow guide support.

Preferably, the silencer further comprises an air inlet grille, and the air inlet grille is positioned on one side of the diversion bracket, which is provided with the diversion inclined plane;

the air inlet side of the air inlet grille is provided with an air guide inclined plane so as to enable air flow to be uniformly distributed on the air inlet grille.

The invention further provides a range hood comprising:

a fume collection hood having a fume collection area;

the air inlet end of a silencing barrel of the silencer is communicated with the smoke collecting area;

wherein the muffler includes:

In the technical scheme of the invention, in the process that airflow enters the silencing passage from the air inlet end of the silencing cylinder and flows out from the air outlet end, the airflow is respectively guided by each silencing sub-passage to pass through the silencing cylinder, and when the airflow passes through the silencing sub-passages, the airflow is guided by the side wall of each silencing sub-passage; after separating the amortization passageway and forming a plurality of amortization subchannels, the quantity of amortization subchannel and the lateral wall area for the water conservancy diversion all corresponding obtaining increase to by a wide margin the water conservancy diversion effect of muffler has been increased, make the muffler have the effect of rectification, make the air current through the amortization section of thick bamboo very smooth and easy, thereby avoided appearing phenomena such as vortex, turbulent flow in the amortization section of thick bamboo, when less wind energy loss, improvement air supply efficiency, also reduced the production of noise.

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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a range hood according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of an exploded view of the embodiment of FIG. 1;

FIG. 3 is a schematic view of the internal structure of the partition and the sound absorption layer in FIG. 1;

FIG. 4 is a schematic structural view of the top of the muffler cartridge of FIG. 1;

FIG. 5 is a bottom view of the muffler cartridge of FIG. 1;

FIG. 6 is a schematic diagram of an exploded view of another embodiment of FIG. 1;

FIG. 7 is an enlarged view of a portion of FIG. 6 at A;

FIG. 8 is an enlarged view of a portion of FIG. 6 at B;

FIG. 9 is an enlarged view of a portion of FIG. 6 at C;

FIG. 10 is an enlarged view of a portion of FIG. 6 at D;

fig. 11 is a partial enlarged view at E in fig. 6.

The reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. 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 invention.

Referring to fig. 1 to 11, the noise reducer provided by the present application is mainly used for noise reduction of a range hood, and the range hood mainly includes a smoke collecting hood 100 close to a user, a condensing plate is disposed inside the smoke collecting hood 100, a fan assembly disposed away from the user, a silencer 200 disposed between the fan assembly and the smoke collecting hood 100, and a connecting structure disposed between the silencer 200 and the fan assembly; under the action of the fan assembly, the fume collecting cover 100 collects the fume generated in the cooking process, enters the silencing passage through the air inlet end of the silencer 200, enters the fan box 300 through the air outlet end of the silencer 200, and is discharged.

The specific structure of each component of the range hood and the connection relationship between each component will be mainly described below, and the fan assembly and the silencer 200 are introduced in sequence.

The fan assembly comprises a fan box 300, a volute, a wind wheel, a connecting cover and the like, wherein the volute, the wind wheel, the connecting cover and the like are arranged in the machine box. The fan box 300 has an air inlet 310 and an air outlet 320, and a check valve 360 is disposed at the position of the air outlet 320, although in some embodiments, the check valve 360 may also be installed at a smoke outlet on a wall, and the check valve 360 communicates with the smoke exhaust pipe and the air outlet 320. The wind wheel is installed in the volute, and the volute is installed in the fan box 300.

The fan box 300 is provided in a box shape, the air inlet 310 is provided at the bottom of the fan box 300, and the air outlet 320 may be provided on a side wall or a top of the fan box 300, taking the side wall as an example. The air outlet 320 is connected with a smoke exhaust pipe, the smoke exhaust pipe is transversely arranged, and the other end of the smoke exhaust pipe is communicated with a smoke exhaust port in the wall body, so that the oil smoke generated by cooking is exhausted outdoors. The fan case 300 is exemplified by a hexahedron. The bottom of the fan case, i.e., the end facing the silencer 200, is open.

The muffler 200, comprising:

the silencer comprises a silencer barrel 210, wherein the silencer barrel 210 is provided with an air inlet end, an air outlet end and a silencer channel communicated with the air inlet end and the air outlet end;

and partition plates 220, which are disposed in the silencing passage 220 to divide the silencing passage into a plurality of silencing sub-passages 212 disposed along the length direction of the silencing tube 210.

Specifically, in this embodiment, the air inlet end of the silencing barrel 210 has an air inlet, the air outlet end has an air outlet, and the silencing passage communicates the air inlet and the air outlet. The air outlet end of the silencing pot 210 is fixedly connected with the fan box through a connecting structure, and the silencing pot 210 is communicated with the air inlet of the fan box. The connecting structures can be in many forms, for example, a U-shaped coaming is taken as an example, and the coaming can be simultaneously connected with the fan box and the silencing barrel 210 so as to connect the fan box and the silencing barrel 210; alternatively, the silencing tube 210 is sleeved at the air inlet of the fan box, and the surrounding plate is sleeved outside and fastened by screws and the like. The forms of the silencing pot 210 are many, and can be a complete pot directly, or formed by splicing a plurality of plates, the silencing pot 210 comprises a front cover 213 and a rear cover 214, the cross section of the front cover 213 is arranged in a U shape, and the front cover 213 and the rear cover 214 enclose to form the silencing pot 210 with two through ends.

When the fan assembly is in operation, noise generated by the fan assembly is transmitted from the interior of the cabinet downward through the silencer cartridge 210. Meanwhile, the smoke in the smoke collection cavity 11 is transmitted upwards through the silencing tube 210, passes through the silencing tube 210, enters the fan box, and is discharged from the air outlet. In this process, since the sound-deadening passage is partitioned by the partition plates 220 to form the plurality of sound-deadening sub-passages 212, the side wall area of the sound-deadening sub-passage 212 is greatly increased. When the air current passes through amortization subchannel 212, the air current flows along the lateral wall of amortization subchannel 212, because lateral wall area increases by a wide margin for the air current is at the in-process through amortization channel, by better guide, and at this moment, baffle 220 plays the effect of rectification, makes the air current more smooth and easy when passing through amortization channel. Thereby the energy loss of the air current in the amortization passageway has been reduced by a wide margin, is favorable to the more smooth and easy flow of flue gas in the amortization passageway, has improved the flow speed, simultaneously, has reduced the air current by a wide margin.

In this embodiment, in the process that the airflow enters the silencing passage from the air inlet end of the silencing cylinder 210 and flows out from the air outlet end, the airflow is guided by each silencing sub-passage 212 to pass through the silencing cylinder 210, and when the airflow passes through the silencing sub-passages 212, the airflow is guided by the side wall of the silencing sub-passage 212; after the silencing passages are separated to form a plurality of silencing sub-passages 212, the number of the silencing sub-passages 212 and the area of the side wall for flow guiding are correspondingly increased, so that the flow guiding effect of the silencer 200 is greatly increased, the silencer 200 has the rectifying effect, airflow passing through the silencing barrel 210 is very smooth, the phenomena of vortex, turbulence and the like in the silencing barrel 210 are avoided, less wind energy loss is realized, and the air supply efficiency is improved, and meanwhile, the noise is reduced.

In some embodiments, to further reduce noise, sound absorbing layer 400 is disposed on the inner wall of sound attenuating sub-passage 212. The sound absorbing layer 400 may be made of many materials, such as cotton wool fabric, and the sound absorbing layer 400 includes sound absorbing cotton as an example. Through set up sound absorbing layer 400 on the inner wall of amortization subchannel 212 for sound absorbing layer 400's area obtains great increase, and when the noise was when passing through amortization passageway, more was consumed and is absorbed, thereby is favorable to better noise reduction.

Regarding the number of the silencing sub-channels 212, it is not desirable to be too small, the rectification effect is not significant when too small, and not too much, and too much will affect the normal transmission of the flue gas, the number of the silencing sub-channels 212 is 2-8, taking four as an example.

In some embodiments, the baffle 220 is removably attached to the silencer cartridge 210 to facilitate installation, removal, and maintenance of the baffle 220. There are many ways of detachment, such as by screw connection, snap connection, etc.

The following examples illustrate specific connection modes:

the air inlet end and/or the air outlet end of the silencing barrel 210 are/is provided with an installation flange 211, one end of the partition plate 220 is provided with a fixing plate 221, one end of the edge of the fixing plate 221 is connected with the end of the partition plate 220, and the other end of the edge of the fixing plate 221 is detachably connected with the installation flange 211.

The mounting flanges 211 may be disposed at the air inlet end and the air outlet end of the silencer 210, or the mounting flanges 211 may be disposed at both the air inlet end and the air outlet end. The mounting flange 211 is formed by extending from the side wall of the silencing passage toward the inside of the silencing passage. Installation turn-ups 211 not only can supply baffle 220 to install, can also supply the cotton installation of amortization, and the side of amortization cotton is laminated with the lateral wall of amortization subchannel 212, tip and installation turn-ups 211 cooperation. The fixing plate 221 may be a separate plate or a plate integrally formed with the partition plate 220. Specifically, the fixing plate 221 extends in the width direction of the partition plate 220, and/or the fixing plate 221 is integrally formed with the partition plate 220. The fixing plate 221 may be directly connected to the mounting flange 211, or may be connected to the mounting flange 211 through the connecting plate 500. The fixing plate 221 is disposed at an end of the partition plate 220.

When the fixing plate 221 is directly connected to the mounting flange 211, the fixing plate 221 extends out of the partition plate 220 (along the width direction of the partition plate 220), and the portion extending out of the partition plate 220 is connected to the mounting flange 211 in various ways, such as by fasteners, or directly connected to the mounting flange 211 by a snap fit.

When the partition 220 is coupled to the mounting flange 211 by the coupling plate 500, the fixing plate 221 does not protrude out of the partition 220 in the width direction of the partition 220, thereby not increasing the width of the partition 220. At this time, one end of the connection plate 500 is fixedly connected to the fixing plate 221, and the other end is fixedly connected to the mounting flange 211.

In some embodiments, in order to increase the installation strength of the partition plate 220, fixing plates 221 are disposed at both ends of the partition plate 220, and the fixing plates 221 at both ends of the partition plate 220 are respectively connected to the installation flanges 211 at the air inlet end and the air outlet end of the silencing pot 210. At this time, the fixing plates 221 are disposed at both ends of the partition plate 220, and the fixing plates 221 are uniformly connected by the flanges 211.

In order to improve the installation efficiency of the silencing tube 210, the end of the air inlet end or the air outlet end of the silencing tube 210, which extends out of the partition plate 220, of the fixing plate 221 is connected with the installation flange 211; the silencer 200 further comprises a connecting plate 500, one end of the connecting plate 500 is connected with the mounting flange 211 at the air outlet end or the air inlet end of the silencing tube 210, and the other end of the connecting plate 500 is connected with the corresponding fixing plate 221.

In this embodiment, the both ends of the partition plate 220 are provided with the fixing plates 221, the fixing plates 221 of one end in the air inlet end and the air outlet end extend out of the partition plate 220 to be connected with the installation flange 211, and the other end is connected with the installation flange 211 through the connecting plate 500. This is so arranged that after the sound absorbing layer 400 is mounted to the partition plate 220, the partition plate 220 is inserted from one end of the sound-deadening cylinder 210, and then the partition plate 220 is fixed by the fixing plate 221. Therefore, the arrangement of the silencing layer is facilitated, and the connection efficiency among the partition plate 220, the silencing layer and the silencing tube 210 is greatly improved.

In order to divide the sound-deadening channel into a plurality of sound-deadening sub-channels 212, the number of the partition plates 220 is plural, and the plurality of the partition plates 220 extend from the inner wall of the sound-deadening channel to the inside of the sound-deadening channel and are connected; alternatively, one sides of the plurality of partition plates 220 are connected to each other, and a side away from the connection extends toward a sidewall of the sound-deadening passageway. It should be noted that the present invention is described in a state of one piece, and not limited to the installation or forming process, that is, the partition 220 may extend from the middle of the silencing duct to the periphery. Thus, it is arranged such that the sound-deadening passages are partitioned by the plurality of partition plates 220.

There are many ways of connecting the partition boards 220 with each other, such as by snap connection, fastening connection, etc., in this embodiment, it is described by taking the example of providing the fastening flange 222, the side edge of the partition board 220 along the length direction thereof is provided with the fastening flange 222, and the fastening flange 222 is connected with the adjacent partition board 220 by a fastening member. The fastening flange 222 is disposed along the length direction of the partition 220, and the fastening flange 222 may be disposed separately or integrally with the partition 220. A plurality of fixing holes are arranged along the length direction of the fastening flange 222, and the fastening flange 222 is attached and fastened to the adjacent plate surface of the separator 220 by the cooperation of the fastening member and the fastening hole. In this manner, the plurality of partitions 220 form one cycle by fastening the flanges 222. Taking four partition boards 220 as an example, the fastening flange 222 of the first partition board 220 is fastened to the second partition board 220, the fastening flange 222 of the second partition board 220 is fastened to the third partition board 220, the fastening flange 222 of the third partition board 220 is fastened to the fourth partition board 220, and the fastening flange 222 of the fourth partition board 220 is fastened to the first partition board 220.

In some embodiments, in order to reduce the loss of wind energy as much as possible and improve the fluency of the gas, the silencer 200 further includes a flow guide bracket 700, the flow guide bracket 700 is connected to the air inlet end or the end of the partition plate 220, and a flow guide inclined surface 710 is provided on a side of the flow guide bracket 700 facing away from the silencing pot 210.

In this embodiment, the diversion bracket 700 may have a plurality of shapes, which may be cross-shaped or "king" shaped, and a diversion inclined plane 710 is formed on one side of the diversion bracket 700 facing the smoke collecting hood 100. When the airflow blows to the guiding inclined plane 710, the guiding inclined plane 710 guides the airflow to flow, so that the airflow is prevented from blowing on a plane directly, and a large amount of wind energy loss is avoided.

Certainly, in some embodiments, the shape of the diversion support 700 corresponds to the arrangement of the partition boards 220, so that the end part of each partition board 220 located at the air inlet end is provided with the diversion structure of the diversion support 700, thereby preventing the air flow from directly blowing onto the sound absorption layer 400 or directly blowing onto a flat surface, greatly reducing the loss of wind energy, and being beneficial to improving the fluency of air.

In some embodiments, in order to further improve the noise reduction effect and reduce the emission of soot, the silencer 200 further includes an air inlet grille 800, the air inlet grille 800 is located at one side of the diversion bracket 700, which has the diversion inclined plane 710; the air inlet side of the air inlet grille 800 is provided with an air guide inclined plane 810 so that air flow is uniformly distributed on the air inlet grille 800. Through the setting of air inlet grid 800 for the noise receives the weakening by a wide margin when passing air inlet grid 800, and simultaneously, when the flue gas passes through air inlet grid 800, the department's oil smoke forms liquid on grid 800 to flow below the wind-guiding of air inlet grid 800, make the oil smoke collect and be convenient for centralized processing. Meanwhile, when the air flow is perpendicular to the air guide slope 810, the air guide slope 810 guides the air flow so that the air flow uniformly passes through the air inlet grille 800.

The invention further provides a range hood, which comprises a smoke collecting hood 100 and a silencer 200, and the range hood comprises the silencer 200, so that all technical effects of the silencer 200 are achieved, and further description is omitted here. Wherein the fume collecting hood 100 has a fume collecting chamber 11; the silencer 200, the air inlet end of the silencing barrel 210 of the silencer 200 is communicated with the smoke collecting area.

It should be noted that the range hood further includes a mounting flange 900, one end of the flange 900 is connected to the silencing pot 210 to fix the air inlet grille 800, and the other end is fixedly connected to the top of the smoke collecting cover 100.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A muffler, comprising:

the partition plate is arranged in the silencing passage and divides the silencing passage into a plurality of silencing sub-passages arranged along the length direction of the silencing barrel; the side edge of the partition board along the length direction is provided with a fastening flange, and the fastening flange is connected with the adjacent partition board through a fastening piece;

the air inlet end and/or the air outlet end of the silencing barrel are/is provided with mounting flanges, one end of the partition plate is provided with a fixed plate, one end of the edge of the fixed plate is connected with the end part of the partition plate, and the other end of the edge of the fixed plate is detachably connected with the mounting flanges;

the silencer also comprises a flow guide support and an air inlet grid, the flow guide support is connected with the air inlet end or the end part of the partition plate, and one side of the flow guide support, which is back to the silencing barrel, is provided with a flow guide inclined plane; the shape of the diversion bracket corresponds to the arrangement of the partition plates; the air inlet grille is positioned on one side of the diversion support with the diversion inclined plane, and the air inlet side of the air inlet grille is provided with the air diversion inclined plane so as to enable air flow to be uniformly distributed on the air inlet grille.

2. The muffler of claim 1, wherein the inner wall of the silencer sub-passage is provided with a sound absorbing layer.

3. The muffler of claim 1, wherein the number of the muffling sub-passages is 2 to 8.

4. The silencer according to claim 1, wherein fixing plates are arranged at two ends of the partition plate, and the fixing plates at the two ends of the partition plate are respectively connected with the mounting flanges at the air inlet end and the air outlet end of the silencing barrel.

5. The silencer according to claim 4, wherein the end of the baffle plate extending from the air inlet end or the air outlet end of the baffle plate is connected with the mounting flange;

6. The muffler of claim 1, wherein the partition is plural in number, and the plural partitions extend from an inner wall of the silencing passage to an inside of the silencing passage and are connected;

or one side of the plurality of partition plates is connected with each other, and the side far away from the connection part extends to the side wall of the silencing passage.

7. A range hood, comprising:

the smoke collecting cover is provided with a smoke collecting cavity;

the silencer according to any one of claims 1 to 6, wherein an air inlet end of a silencing barrel of the silencer is communicated with the smoke collection cavity.