CN112555942A - Noise reduction structure of range hood and range hood - Google Patents
Noise reduction structure of range hood and range hood Download PDFInfo
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- CN112555942A CN112555942A CN202011404942.8A CN202011404942A CN112555942A CN 112555942 A CN112555942 A CN 112555942A CN 202011404942 A CN202011404942 A CN 202011404942A CN 112555942 A CN112555942 A CN 112555942A
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- 230000009467 reduction Effects 0.000 title claims abstract description 30
- 239000006096 absorbing agent Substances 0.000 claims abstract 3
- 239000006233 lamp black Substances 0.000 claims abstract 3
- 238000010521 absorption reaction Methods 0.000 claims description 58
- 239000003517 fume Substances 0.000 claims description 9
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 5
- 229920000742 Cotton Polymers 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000004630 mental health Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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- Acoustics & Sound (AREA)
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Abstract
The invention discloses a noise reduction structure of a range hood and the range hood. This mounting structure is including inhaling the sound shell, inhales the inside cavity of sound shell and forms the sound runner of inhaling that extends along upper and lower direction, and the inner wall of inhaling the sound runner is equipped with the sound structure of inhaling that will inhale the sound runner and separate for a plurality of sub-runner. Establish through the inner wall at inhaling the sound runner and inhale the sound structure, inhale the sound structure and will inhale the sound runner and separate for a plurality of sub-runners, a plurality of sub-runners are shunted the air current that gets into in inhaling the sound runner, have increased and have inhaled the sound area of inhaling of sound to the air current, have improved the noise reduction effect. Still provide a lampblack absorber, including collection petticoat pipe and quick-witted case, quick-witted incasement is equipped with the wind channel, is equipped with the fan in the wind channel, still includes the structure of making an uproar of falling of lampblack absorber, and the structure of making an uproar falls to locate between collection petticoat pipe and the quick-witted case, inhales the air intake and the collection petticoat pipe intercommunication of sound runner, inhales the air outlet and the wind channel.
Description
Technical Field
The invention belongs to the technical field of kitchen appliances, and particularly relates to a noise reduction structure of a range hood and the range hood.
Background
The top-suction type range hood generally comprises a fume collecting hood and a case arranged above the fume collecting hood, wherein an air duct communicated with the outside and the inside of the fume collecting hood respectively is arranged in the case of the range hood, and a fan system is arranged in the air duct and comprises a fan, a fan volute, a motor and the like; the oil fume flow generated in the cooking process is collected in the fume collecting hood under the power action of the fan system, passes through the air inlet communicated with the fume collecting hood and is exhausted outdoors through the air duct.
The range hood in the prior art has almost the same noise, namely the noise power level is about 70dB (A), the sound pressure level is about 55dB noise level, people cook in the noise environment of the level for a long time, the physical and mental health is seriously affected, particularly, middle-aged and old people can cause aggravation of diseases, and therefore, how to reduce the noise is a key method for improving the noise experience of the range hood.
In prior art, in order to reduce the noise, often establish between collection petticoat pipe and bellows and fall the structure of making an uproar, fall the structure of making an uproar and include inhaling the sound shell, inhale and be formed with the sound passageway of inhaling that extends along upper and lower direction in the sound shell, inhale the upper end of sound passageway and establish the air outlet with quick-witted case intercommunication, inhale the lower extreme of sound passageway and establish the air intake with collection petticoat pipe intercommunication, inhale the sound passageway to be cylindric, the air current enters into to inhaling in the sound passageway by the air intake under the effect of fan, again in the wind channel of air outlet entering quick-witted case, owing to inhale the sound passageway and be an solitary runner, inhale the sound area that the sound passageway inhales the air current and only involved the perispor.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects in the prior art and provide a noise reduction structure of a range hood and the range hood so as to increase the sound absorption area for absorbing sound of air flow and improve the noise reduction effect.
In order to solve the technical problems, the invention adopts the technical scheme that:
the invention provides a noise reduction structure of a range hood, which comprises a sound absorption shell, wherein the sound absorption shell is internally hollow to form a sound absorption flow channel extending along the vertical direction, and the inner wall of the sound absorption flow channel is provided with a sound absorption structure for dividing the sound absorption flow channel into a plurality of sub-flow channels.
Further, inhale the sound structure and include first sound absorption structure, first sound absorption structure includes first abatvoix and first mounting panel, and first mounting panel is squarely, and the side all sets up with the inner wall laminating of inhaling the sound runner about first mounting panel, and first abatvoix imbeds the middle part of first mounting panel completely along the fore-and-aft direction, and exposes in the front and back both sides of first mounting panel.
Furthermore, the first sound absorption plate comprises a first flow guide part and a second flow guide part which are distributed along the up-down direction, the first flow guide part is arc-shaped, the cross section of the first flow guide part along the front-back direction is arc-shaped, the cross section of the second flow guide part along the front-back direction is triangular, the size of the first flow guide part from bottom to top is gradually increased, and the size of the second flow guide part from bottom to top is gradually reduced.
Further, the upper and lower portions of the cross section of the first mounting plate in the front-rear direction are both rectangular, and the middle portion is elliptical.
Further, inhale the sound structure and still include that two seconds inhale the sound structure, one inhales the sound structure and locates the leading flank of first mounting panel and inhale between the inner wall of sound runner, another inhales the sound structure and locates the trailing flank of first mounting panel and inhale between the inner wall of sound runner, the second inhales the sound structure and just to first abatvoix setting.
Further, the second sound-absorbing structure comprises a second sound-absorbing plate and an annular second mounting plate, the second mounting plate is sleeved on the outer side of the second sound-absorbing plate along the front-back direction, and the projection of the combination of the second sound-absorbing plate and the second mounting plate on the first mounting plate coincides with the first sound-absorbing plate.
Further, inhale the sound shell and be squarely, inhale the sound shell including locating respectively and inhale two third of sound shell front and back both sides and inhale the sound structure, the third inhales the sound structure and includes third abatvoix and third mounting panel, and the third abatvoix is located the one side of third mounting panel dorsad first mounting panel, and the projection and the first mounting panel coincidence of third mounting panel on first mounting panel, and the third mounting panel is equipped with the through-hole that exposes the third abatvoix, and the projection of through-hole and first abatvoix coincidence on first mounting panel.
Further, inhale the sound shell including locating respectively and inhale two fourth sound structures of inhaling of sound shell left and right sides, the fourth sound structure of inhaling includes fourth abatvoix and fourth mounting panel, and the fourth abatvoix is located the one side of fourth mounting panel dorsad first mounting panel, and the fourth mounting panel sets up with first mounting panel and third mounting panel laminating respectively.
Furthermore, all be equipped with on second mounting panel, the third mounting panel and the fourth mounting panel and inhale the sound hole.
The invention also provides a range hood, which comprises a smoke collecting hood and a case, wherein an air duct is arranged in the case, and a fan is arranged in the air duct.
After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects.
Establish through the inner wall at inhaling the sound runner and inhale the sound structure, inhale the sound structure and will inhale the sound runner and separate for a plurality of sub-runners, a plurality of sub-runners are shunted the air current that gets into in inhaling the sound runner, have increased and have inhaled the sound area of inhaling of sound to the air current, have improved the noise reduction effect.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic structural diagram of a noise reduction structure of a range hood provided by an embodiment of the invention;
FIG. 2 is an exploded view of a schematic structural diagram of a noise reduction structure of a range hood provided by an embodiment of the invention;
fig. 3 is a schematic structural diagram of a first sound absorption structure in a noise reduction structure of a range hood provided by an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a third sound-absorbing structure in the noise reduction structure of the range hood provided by the embodiment of the invention;
fig. 5 is a schematic structural diagram of a fourth sound absorbing structure in the noise reduction structure of the range hood provided by the embodiment of the invention.
In the figure: 1-a sound-absorbing housing; 2-sound absorption flow channel; 21-a sub-channel; 3-a first sound absorbing structure; 31-a first sound-absorbing panel; 32-a first mounting plate; 321-a first section; 322-a second segment; 323-third section; 4-a second sound absorbing structure; 41-a second sound-absorbing panel; 42-a second mounting plate; 5-a third sound absorbing structure; 51-a third sound-absorbing panel; 52-a third mounting plate; 521-a through hole; 522-flanging; 6-a fourth sound absorbing structure; 61-a fourth sound-absorbing panel; 62-a fourth mounting plate; 621-upward flanging; 622-lower flanging; 623-front flanging; 624-back flanging.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
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, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 and 2, the noise reduction structure of a range hood according to the present invention includes a sound absorption housing 1, a sound absorption flow channel 2 extending in an up-down direction is formed in the sound absorption housing 1, and a sound absorption structure is disposed on an inner wall of the sound absorption flow channel 2 to divide the sound absorption flow channel 2 into a plurality of sub flow channels 21.
In the embodiment of the invention, the sound absorption structure is arranged on the inner wall of the sound absorption runner 2, the sound absorption structure divides the sound absorption runner 2 into a plurality of sub-runners 21, and the plurality of sub-runners 21 divide the airflow entering the sound absorption runner 2, so that the sound absorption area for absorbing the airflow is increased, and the noise reduction effect is improved; the noise of the air flow comes from air flow turbulence sound, motor sound and fan sound.
The sound absorbing structure is arranged in the sound absorbing flow channel 2 and is used as a partition plate to divide the sound absorbing flow channel 2 into a plurality of mutually independent sub-flow channels 21, so that the air inlet and the air outlet of the sound absorbing flow channel 2 are divided into a plurality of sub-air inlets and sub-air outlets corresponding to the sub-flow channels 21.
As shown in fig. 1 and 3, in the embodiment of the present invention, the sound absorbing structure includes a first sound absorbing structure 3, the first sound absorbing structure 3 includes a first sound absorbing plate 31 and a first mounting plate 32, the first mounting plate 32 is square, a left side surface of the first mounting plate 32 is attached to an inner wall of the sound absorbing flow passage 2, a right side surface of the first mounting plate 32 is attached to an inner wall of the sound absorbing flow passage 2, the first sound absorbing plate 31 is completely embedded in a middle portion of the first mounting plate 32 in a front-back direction, and front and back side surfaces of the first sound absorbing plate 31 are exposed to the first mounting plate 32.
In the embodiment of the present invention, the whole left side surface of the first mounting plate 32 is attached to the inner wall of the sound absorbing flow channel 2, and the whole right side surface of the first mounting plate 32 is attached to the inner wall of the sound absorbing flow channel 2, so that the sound absorbing flow channel 2 is divided into two sub-flow channels 21, the first mounting plate 32, the left and right side surfaces of the sound absorbing flow channel 2 and the front side surface of the first mounting plate 32 define one sub-flow channel 21, and the first mounting plate 32, the left and right side surfaces of the sound absorbing flow channel 2 and the rear side surface of the first mounting plate 32 define the other sub-;
the first sound-absorbing plate 31 is a sound-absorbing cotton plate, which has certain elasticity and is low in hardness so as to be flexible, so that the first sound-absorbing plate 31 is completely embedded into the first mounting plate 32, and the first mounting plate 32 has certain hardness and is not easy to bend, so that the stability of the first sound-absorbing plate 31 is improved; in order to increase the sound absorption area of the airflow, the front side and the rear side of the sound absorption plate are exposed out of the first mounting plate 32; the first mounting plate 32 is provided with through holes along the front-rear direction of the first mounting plate 32, the first sound-absorbing plate 31 is completely embedded into the first mounting plate 32 through the through holes, the front surface of the first sound-absorbing plate 31 is flush with the front surface of the first mounting plate 32, and the rear surface of the first sound-absorbing plate 31 is flush with the rear surface of the first mounting plate 32.
As shown in fig. 3, in the embodiment of the present invention, the first sound absorbing plate 31 is square, and the cross section of the first sound absorbing plate 31 in the front-rear direction is drop-shaped, specifically, the first sound absorbing plate 31 includes a first flow guide portion and a second flow guide portion distributed in the up-down direction, the first flow guide portion is arc-shaped, the cross section of the first flow guide portion in the front-rear direction is arc-shaped, the cross section of the second flow guide portion in the front-rear direction is triangular, the size of the first flow guide portion gradually increases from bottom to top, and the size of the second flow guide portion gradually decreases from bottom to top.
In the embodiment of the present invention, specifically, the first sound-absorbing plate 31 is square, the left and right side surfaces of the first sound-absorbing plate 31 are circular arc-shaped, and the dimension from top to bottom is kept constant, the left side surface of the first sound-absorbing plate 31 protrudes leftward and the right side surface thereof protrudes rightward; the upper and lower side surfaces of the first sound-absorbing plate 31 are circular arc-shaped, the size from left to right is kept unchanged, the upper side surface of the first sound-absorbing plate 31 protrudes upwards, and the lower side surface thereof protrudes downwards; the front and rear side surfaces of the first sound-absorbing plate 31 are in a water-drop shape, and the size from top to bottom is gradually increased and then gradually decreased; the section in the front-back direction is divided into an upper part and a lower part, the size of the upper part is gradually increased from top to bottom, the size of the lower part is gradually reduced from top to bottom, the size change amplitude of the upper part is larger than that of the lower part, and the extension degree of the upper part from top to bottom is larger than that of the lower part from top to bottom;
first sound-absorbing board 31 is designed to be in the shape described above, because the outline of first sound-absorbing board 31 conforms to the air flow principle, and on the premise of ensuring smooth air flow movement, the noise reduction effect is improved.
As shown in fig. 3, in the embodiment of the present invention, the upper and lower portions of the cross section of the first mounting plate in the front-rear direction are both rectangular, and the middle portion is elliptical.
In the embodiment of the present invention, specifically, the first mounting plate 32 includes a first section 321, a second section 322, and a third section 323, which are sequentially distributed from top to bottom, the section of the first section 321 in the front-back direction is an upper portion of the section of the first mounting plate 32 in the front-back direction, the section of the second section 322 in the front-back direction is a middle portion of the section of the first mounting plate 32 in the front-back direction, and the section of the third section 323 in the front-back direction is a lower portion of the section of the first mounting plate 32 in the front-back direction;
the left and right sides of the first section 321, the second section 322 and the third section 323 are kept unchanged from top to bottom, the left and right sides of the second section 322 are both arc-shaped, and the left side of the second section 322 protrudes leftwards and the right side protrudes rightwards; the front and back sides of the first section 321 are kept unchanged from top to bottom, the front and back sides of the second section 322 are gradually increased and then gradually decreased from top to bottom, and the front and back sides of the third section 323 are kept unchanged from top to bottom;
the side has certain distance with the upside of first mounting panel 32 on the upside of first abatvoix 31, and be located first section 321 of first mounting panel 32, the downside has certain distance with the downside of first mounting panel 32, and be located second section 322 of first mounting panel 32, the left side of first abatvoix 31 has certain distance with the left side of first mounting panel 32, the right flank has certain distance with the right flank of first mounting panel 32, side size change keeps the unanimity around side and the first mounting panel 32 around the first abatvoix 31, make the side also basically is the drop shape around the first mounting panel 32, the same is because the profile of first mounting panel 32 accords with the air flow principle, under the smooth prerequisite of assurance air current motion, the effect of making an uproar has been promoted.
As shown in fig. 1 and 2, in the embodiment of the present invention, the second sound-absorbing structure 4 is provided between the sound-absorbing flow path 2 and each of the front and rear sides of the first mounting plate 32, and the second sound-absorbing structure 4 is provided to face the first sound-absorbing plate 31.
In the embodiment of the present invention, a second sound absorbing structure 4 is disposed between the front side of the first mounting plate 32 and the front side of the sound absorbing flow channel 2, another second sound absorbing structure 4 is disposed between the back side of the second mounting plate 42 and the back side of the sound absorbing flow channel 2, the sound absorbing flow channel 2 is divided into four sub-flow channels 21 by the two second sound absorbing structures 4 and the first sound absorbing structure 3, and the second sound absorbing structure 4, the left side of the sound absorbing flow channel 2, the first sound absorbing structure 3 and the front side of the sound absorbing flow channel 2 enclose one sub-flow channel 21; the second sound-absorbing structure 4, the right side surface of the sound-absorbing flow channel 2, the first sound-absorbing structure 3 and the front side surface of the sound-absorbing flow channel 2 form a sub-flow channel 21; the second sound-absorbing structure 4, the left side surface of the sound-absorbing flow channel 2, the first sound-absorbing structure 3 and the rear side surface of the sound-absorbing flow channel 2 enclose a sub-flow channel 21; the second sound-absorbing structure 4, the right side surface of the sound-absorbing flow channel 2, the first sound-absorbing structure 3 and the rear side surface of the sound-absorbing flow channel 2 enclose a sub-flow channel 21, so that the sound-absorbing area for absorbing sound of the airflow is further increased.
As shown in fig. 2, in the embodiment of the present invention, second sound-absorbing structure 4 includes second sound-absorbing panel 41 and annular second mounting plate 42, second mounting plate 42 is fitted over the outer side of second sound-absorbing panel 41 in the front-rear direction, and the projection of the combination of second sound-absorbing panel 41 and second mounting plate 42 on first mounting plate 32 coincides with first sound-absorbing panel 31.
In the embodiment of the present invention, specifically, the second sound absorbing structure 4 includes a second sound absorbing plate 41 and a second mounting plate 42 in an annular shape, the second sound absorbing plate 41 is a sound absorbing cotton plate, the second mounting plate 42 has a certain hardness, the second mounting plate 42 is sleeved on the outer side of the second sound absorbing plate 41, and the front and rear side surfaces of the second sound absorbing plate 41 are exposed, so that the second sound absorbing plate 41 can absorb the airflow;
in order to increase the aesthetic appearance and improve the noise reduction effect, the projections of second sound-absorbing panel 41 and second mounting panel 42 on first mounting panel 32 coincide with first sound-absorbing panel 31, i.e., the shapes of second sound-absorbing panel 41 and second mounting panel 42 are kept consistent with the shape of first sound-absorbing panel 31; the second mounting plate 42 is provided with a fixing hole, and the second mounting plate 42 can be fixed to the first mounting plate 32 and the sound-absorbing housing 1 by the fixing hole.
As shown in fig. 1, 2 and 4, in the embodiment of the present invention, the front and rear sides of the sound-absorbing casing 1 each include a third sound-absorbing structure 5, the third sound-absorbing structure 5 includes a third sound-absorbing plate 51 and a third mounting plate 52, the third sound-absorbing plate 51 is disposed on the side of the third mounting plate 52 facing away from the first mounting plate 32, the projection of the third mounting plate 52 on the first mounting plate 32 coincides with the first mounting plate 32, the third mounting plate 52 is provided with a through hole 521 for exposing the third sound-absorbing plate 51, and the projection of the through hole 521 on the first mounting plate 32 coincides with the first sound-absorbing plate 31.
In the embodiment of the present invention, the sound-absorbing casing 1 is formed by combining two third sound-absorbing structures 5 and two fourth sound-absorbing structures, wherein the third sound-absorbing structures 5 face the first sound-absorbing structure 3, the shape of the third mounting plate 52 is consistent with the shape of the first mounting plate 32, the third sound-absorbing plate 51 is arranged on the side of the third mounting plate 52 facing away from the first mounting plate 32, and the through holes 521 formed in the third mounting plate 52 can expose the third sound-absorbing plate 51, so that part of the third sound-absorbing plate 51 can directly contact with the air flow, and the noise reduction effect is increased; the third mounting plate 52 has a hardness that stabilizes the third sound-absorbing plate 51, and the third sound-absorbing plate 51 is a sound-absorbing cotton plate.
As shown in fig. 4, specifically, a portion of the third mounting plate 52 located below the through hole 521 is bent away from the first mounting plate 32, a circle of flanged edge 522 is arranged on the periphery of the third mounting plate 52, the flanged edge 522 and the third mounting plate 52 enclose a limiting groove, the third sound-absorbing plate 51 is completely embedded into the limiting groove and is attached to the flanged edge 522 and the third mounting plate 52, and the fixing strength of the third sound-absorbing plate 51 is increased on the basis of fixing the third sound-absorbing plate 51; the third sound-absorbing panel 51 is placed in abutment with the flange 522 and the third mounting plate 52 such that the shape of the third sound-absorbing panel 51 conforms to the shape of the third mounting plate 52 and the flange 522.
As shown in fig. 1, 2 and 5, in the embodiment of the present invention, the sound-absorbing casing 1 includes two fourth sound-absorbing structures 6 respectively disposed on left and right sides of the sound-absorbing casing, each fourth sound-absorbing structure 6 includes a fourth sound-absorbing plate 61 and a fourth mounting plate 62, the fourth sound-absorbing plate 61 is disposed on a side of the third mounting plate 52 facing away from the first mounting plate 32, and the fourth mounting plate 62 is respectively attached to the first mounting plate 32 and the third mounting plate 52;
specifically, the fourth mounting plate 62 is provided with an upper and lower flange, a front and rear flange, a limit groove is formed between the upper and lower flange, the front and rear flange and the fourth mounting plate 62, and the third sound-absorbing plate 51 is completely embedded into the limit groove and is attached to the upper and lower flange, the front and rear flange and the fourth mounting plate 62. The fourth mounting plate is provided with an upper flange 621, a lower flange 622, a front flange 623 and a rear flange 624.
In the embodiment of the present invention, the sound absorbing holes are formed on the second mounting plate 42, the third mounting plate 52 and the fourth mounting plate 62.
In the embodiment of the invention, the three mounting plates are provided with the sound absorption holes, and the sound absorption holes can assist the sound absorption plates to absorb the sound of the air flow, so that the noise reduction effect is further improved;
inhale the surface parcel of sound shell 1 and have a side shell, adjacent two side zonulae occludens for can not have direct relation of connection between each sound structure of inhaling, make each sound structure of inhaling can remain stability.
The invention also provides a range hood, which comprises a smoke collecting hood and a case, wherein an air duct is arranged in the case, and a fan is arranged in the air duct.
In the embodiment of the invention, the noise reduction structure is arranged between the machine box and the smoke collecting hood, so that the noise absorption area for absorbing the sound of the airflow can be increased, and the noise reduction effect of the range hood is improved.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a structure of making an uproar falls of lampblack absorber, is including inhaling the sound shell, inhales the inside cavity of sound shell and forms the sound runner of inhaling that extends along upper and lower direction, and its characterized in that inhales the inner wall of sound runner and is equipped with the sound structure of inhaling that will inhale the sound runner and separate for a plurality of sub-runner.
2. The range hood noise reduction structure according to claim 1, wherein the sound absorption structure comprises a first sound absorption structure, the first sound absorption structure comprises a first sound absorption plate and a first mounting plate, the first mounting plate is square, the left side surface and the right side surface of the first mounting plate are attached to the inner wall of the sound absorption flow channel, and the first sound absorption plate is completely embedded into the middle of the first mounting plate in the front-back direction and exposed out of the front side and the back side of the first mounting plate.
3. The noise reduction structure of the range hood according to claim 2, wherein the first sound absorption plate comprises a first flow guide part and a second flow guide part which are distributed along the vertical direction, the first flow guide part is arc-shaped, the section of the first flow guide part along the front-back direction is arc-shaped, the section of the second flow guide part along the front-back direction is triangular, the size of the first flow guide part from bottom to top is gradually increased, and the size of the second flow guide part from bottom to top is gradually decreased.
4. A noise reduction structure of a range hood according to claim 3, wherein upper and lower portions of a cross section of the first mounting plate in the front-rear direction are both rectangular, and a middle portion thereof is elliptical.
5. A noise reduction structure of a range hood according to any of claims 1 to 4, wherein the sound absorbing structure further comprises two second sound absorbing structures, one sound absorbing structure is disposed between the front side surface of the first mounting plate and the inner wall of the sound absorbing flow passage, the other sound absorbing structure is disposed between the rear side surface of the first mounting plate and the inner wall of the sound absorbing flow passage, and the second sound absorbing structure is disposed opposite to the first sound absorbing plate.
6. The noise reduction structure of the range hood according to claim 5, wherein the second sound absorption structure comprises a second sound absorption plate and a second mounting plate which is annular, the second mounting plate is sleeved on the outer side of the second sound absorption plate along the front-back direction, and the projection of the combination of the second sound absorption plate and the second mounting plate on the first mounting plate is overlapped with the first sound absorption plate.
7. The noise reduction structure of the range hood according to claim 6, wherein the sound absorption housing is square, the sound absorption housing comprises two third sound absorption structures respectively disposed on the front side and the rear side of the sound absorption housing, the third sound absorption structures comprise a third sound absorption plate and a third mounting plate, the third sound absorption plate is disposed on the side of the third mounting plate facing away from the first mounting plate, the projection of the third mounting plate on the first mounting plate coincides with the first mounting plate, the third mounting plate is provided with through holes exposing the third sound absorption plate, and the projection of the through holes on the first mounting plate coincides with the first sound absorption plate.
8. The noise reduction structure of the range hood according to claim 7, wherein the sound absorption housing comprises two fourth sound absorption structures respectively disposed on left and right sides of the sound absorption housing, the fourth sound absorption structures comprise a fourth sound absorption plate and a fourth mounting plate, the fourth sound absorption plate is disposed on a side of the fourth mounting plate facing away from the first mounting plate, and the fourth mounting plate is respectively attached to the first mounting plate and the third mounting plate.
9. The noise reduction structure of the range hood according to claim 8, wherein the second mounting plate, the third mounting plate and the fourth mounting plate are provided with sound absorption holes.
10. A kind of kitchen ventilator, including exhaust fume collecting hood and chassis, the chassis has wind channels, there are fans in the wind channel, characterized by that, also include the structure of making an uproar of the kitchen ventilator of any claim 1-9, the structure of making an uproar is located between exhaust fume collecting hood and chassis, the air intake which absorbs the sound runner communicates with exhaust fume collecting hood, the air outlet which absorbs the sound runner communicates with wind channel in the chassis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011404942.8A CN112555942A (en) | 2020-12-02 | 2020-12-02 | Noise reduction structure of range hood and range hood |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011404942.8A CN112555942A (en) | 2020-12-02 | 2020-12-02 | Noise reduction structure of range hood and range hood |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113776095A (en) * | 2021-05-31 | 2021-12-10 | 华帝股份有限公司 | Noise reduction structure for range hood and range hood |
| CN113899066A (en) * | 2021-11-03 | 2022-01-07 | 汉尔姆建筑科技有限公司 | Air duct structure for sound insulation and noise reduction |
-
2020
- 2020-12-02 CN CN202011404942.8A patent/CN112555942A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113776095A (en) * | 2021-05-31 | 2021-12-10 | 华帝股份有限公司 | Noise reduction structure for range hood and range hood |
| CN113776095B (en) * | 2021-05-31 | 2022-12-02 | 华帝股份有限公司 | Noise reduction structure for range hood and range hood |
| CN113899066A (en) * | 2021-11-03 | 2022-01-07 | 汉尔姆建筑科技有限公司 | Air duct structure for sound insulation and noise reduction |
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