CN109869775B - Fume exhaust fan - Google Patents
Fume exhaust fan Download PDFInfo
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- CN109869775B CN109869775B CN201711260224.6A CN201711260224A CN109869775B CN 109869775 B CN109869775 B CN 109869775B CN 201711260224 A CN201711260224 A CN 201711260224A CN 109869775 B CN109869775 B CN 109869775B
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Abstract
本发明公开了一种吸油烟机，吸油烟机包括：烟机本体和消音器，所述烟机本体具有出风口，所述消音器设置在所述出风口处，所述消音器包括多个依次连通的消音段，至少一个所述消音段内部设置有多个消音孔。由此，通过烟机本体和消音器配合，能够有效降低吸油烟机的排气噪音，可以对吸油烟机的整体噪音也有较大改善，从而可以降低整机声功率，进而可以提升用户满意度。
The present invention discloses a range hood, which comprises: a range hood body and a muffler, wherein the range hood body has an air outlet, the muffler is arranged at the air outlet, the muffler comprises a plurality of muffler sections connected in sequence, and at least one of the muffler sections is provided with a plurality of muffler holes. Thus, through the cooperation of the range hood body and the muffler, the exhaust noise of the range hood can be effectively reduced, and the overall noise of the range hood can also be greatly improved, thereby reducing the sound power of the whole machine, and further improving user satisfaction.
Description
Technical Field
The invention relates to the technical field of noise reduction, in particular to a range hood.
Background
The range hood is a noise type product, the main noise sources are fan noise, air inlet noise and exhaust noise, and the improvement of the exhaust noise of the range hood is an important way for improving the noise.
In the related art, an air outlet of the existing range hood is generally connected with a smoke pipe, exhaust noise is not processed, fan noise and airflow noise can be directly transmitted, noise cannot be reduced, and therefore noise is large when the range hood works.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the range hood, which can effectively reduce the exhaust noise of the range hood and can greatly improve the overall noise of the range hood.
The range hood comprises a range hood body and a muffler, wherein the range hood body is provided with an air outlet, the muffler is arranged at the air outlet and comprises a plurality of sequentially communicated silencing sections, and a plurality of silencing holes are formed in at least one silencing section.
According to the range hood, the range hood body is matched with the silencer, so that the exhaust noise of the range hood can be effectively reduced, the overall noise of the range hood can be greatly improved, the sound power of the whole range hood can be reduced, and the user satisfaction can be improved.
Optionally, the plurality of silencing sections comprise a sound inlet silencing section, a middle silencing section and a sound outlet silencing section, wherein the middle silencing section is connected between the sound inlet silencing section and the sound outlet silencing section, the middle silencing section is at least one section, and the inside of at least one section of the middle silencing section is provided with the silencing hole.
Further, the middle silencing section comprises an outer wall and an inner wall, wherein the inner wall is arranged in the outer wall and defines a silencing cavity with the outer wall, and the silencing hole is formed in the inner wall.
Specifically, the silencing cavity is filled with silencing materials.
Optionally, at least one section of the intermediate sound attenuation section has a larger cross-sectional area than the inlet sound attenuation section and the outlet sound attenuation section.
Further, the plurality of the silencing sections are odd-numbered sections, the middle silencing section comprises a central silencing section, the cross-sectional area of the silencing section is presented to increase in the direction from the inlet silencing section to the central silencing section and the direction from the outlet silencing section to the central silencing section, or the middle silencing section is even-numbered, the middle silencing section comprises a first central silencing section and a second central silencing section, the first central silencing section is close to the inlet silencing section compared with the second central silencing section, and the cross-sectional area of the silencing section is presented to increase in the direction from the inlet silencing section to the first central silencing section and the direction from the outlet silencing section to the second central silencing section.
Specifically, the axis of the inlet muffler section and the axis of the outlet muffler section are not collinear.
Optionally, the axis of the inlet silencing segment is inclined relative to the axis of the outlet silencing segment.
Further, the axis of the outlet muffler section and the axis of the intermediate muffler section are collinear.
Specifically, at least a part of the sound outlet and deadening section is provided in a reduced mouth shape in the air outlet direction.
Drawings
Fig. 1 is a schematic view of a range hood according to an embodiment of the present invention;
fig. 2 is a schematic view of a muffler of a range hood according to an embodiment of the present invention;
fig. 3 is a cross-sectional view of a muffler of a range hood according to an embodiment of the present invention.
Reference numerals:
a range hood 10;
A smoke machine body 1, a muffler 2;
a silencing section 3, a silencing section 31;
An intermediate sound attenuation section 32, an outer wall 321, an inner wall 322, a sound attenuation chamber 323;
A sound deadening section 33;
And a sound deadening hole 4.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
A range hood 10 according to an embodiment of the present invention is described in detail below with reference to fig. 1 to 3.
As shown in fig. 1-3, the range hood 10 according to the embodiment of the invention comprises a range hood body 1 and a muffler 2, wherein the range hood body 1 is provided with an air outlet, the muffler 2 is arranged at the air outlet, gas in the range hood body 1 can enter the muffler 2 from the air outlet, the muffler 2 comprises a plurality of sequentially communicated silencing sections 3, and a plurality of silencing holes 4 are formed in at least one silencing section 3.
Wherein, when the gas in the range hood body 1 enters into the muffler 2 from the air outlet, the noise is through a plurality of amortization sections 3 that communicate in proper order, a plurality of amortization sections 3 like this can constantly noise reduction, and, amortization hole 4 also has the noise effect of making an uproar to the noise, from this, through the cooperation of range hood body 1 and muffler 2, can effectively reduce the exhaust noise of range hood 10, can also have great improvement to the whole noise of range hood 10, thereby can reduce the complete machine acoustic power, and then can promote user satisfaction, simultaneously, the reaction rate of the noise reduction of this range hood 10 is fast, can promote noise reduction efficiency.
Alternatively, as shown in fig. 1-3, the plurality of silencing segments 3 may include an inlet silencing segment 31, an intermediate silencing segment 32 and an outlet silencing segment 33, where the intermediate silencing segment 32 is connected between the inlet silencing segment 31 and the outlet silencing segment 33, the intermediate silencing segment 32 is at least one segment, at least one segment of the intermediate silencing segment 32 is internally provided with silencing holes 4, it should be explained that the number of the intermediate silencing segments 32 may be greater than or equal to one segment, and the silencing holes 4 may be simultaneously provided in the multiple segments of the intermediate silencing segments 32, where the multiple segments refer to more than one segment, where the inlet silencing segment 31, the intermediate silencing segment 32 and the outlet silencing segment 33 have a noise attenuation effect, and most of the noise is attenuated after the noise sequentially passes through the inlet silencing segment 31, the intermediate silencing segment 32 and the outlet silencing segment 33, so that the exhaust noise of the range hood 10 may be better reduced. Wherein the inlet muffler section 31 may include an inlet and the outlet muffler section 33 may include an outlet.
Further, as shown in FIG. 3, the middle silencing segment 32 may include an outer wall 321 and an inner wall 322, the inner wall 322 is disposed in the outer wall 321, and the inner wall 322 and the outer wall 321 define a silencing cavity 323, and the silencing hole 4 is disposed on the inner wall 322, when the noise reaches the middle silencing segment 32, the noise enters into the silencing cavity 323 through the silencing hole 4 on the inner wall 322, and part of the noise is weakened in the silencing cavity 323, so that the purpose of noise reduction can be further achieved.
Specifically, the noise-reducing chamber 323 is filled with a noise-reducing material (not shown in the figure), when the noise reaches the middle noise-reducing section 32, the noise enters the noise-reducing chamber 323 through the noise-reducing hole 4 on the inner wall 322, and then the noise entering the noise-reducing chamber 323 is absorbed by the noise-reducing material, so that the noise can be further reduced, and the noise problem of the range hood 10 during operation can be further improved, wherein the noise-reducing material can be sound-absorbing cotton, and the sound-absorbing cotton has the function of absorbing the noise, and can absorb and dissipate the noise entering the noise-reducing chamber 323, so that the noise-reducing quality can be further improved.
Optionally, the cross-sectional area of at least one intermediate sound-deadening segment 32 is larger than that of the inlet sound-deadening segment 31 and the outlet sound-deadening segment 33, and it is noted that, when the number of intermediate sound-deadening segments 32 is larger than one, the number of intermediate sound-deadening segments 32 larger than that of the inlet sound-deadening segment 31 and the outlet sound-deadening segment 33 may be one or more, so that the arrangement can prevent noise from being directly transmitted from the inlet sound-deadening segment 31 to the outlet sound-deadening segment 33, and it can be ensured that noise will be attenuated in the intermediate sound-deadening segment 32, and thus the workability of the muffler 2 can be ensured.
Further, when the plurality of sound deadening sections 3 are provided as odd numbered sections, the intermediate sound deadening section 32 may include a central sound deadening section which refers to the sound deadening section 3 located at the most middle, the number of sound deadening sections 3 on both sides of the central sound deadening section being equal, the cross sectional area of the sound deadening section 3 presenting an increasing trend in the direction from the sound deadening section 31 to the central sound deadening section and in the direction from the sound deadening section 33 to the central sound deadening section, when the noise enters the muffler 2 from the sound deadening section 31, the arrangement being such that the time of the noise in the central sound deadening section can be prolonged, and the noise can be better attenuated by constantly changing the inner space of each sound deadening section 3.
When the middle silencing segment 32 is set to an even number of segments, the middle silencing segment 32 may include a first central silencing segment and a second central silencing segment, where the first central silencing segment is close to the inlet silencing segment 31 and the second central silencing segment is close to the outlet silencing segment 33, in the direction from the inlet silencing segment 31 to the first central silencing segment and in the direction from the outlet silencing segment 33 to the second central silencing segment, the cross-sectional area of the silencing segment 3 presents an increasing trend, when the noise enters the silencer 2 from the inlet silencing segment 31, the time of the noise in the central silencing segment can be further prolonged, and the internal space of each silencing segment 3 is continuously changed, so that the noise can be further weakened.
Specifically, the axis of the inlet sound deadening section 31 and the axis of the outlet sound deadening section 33 are not collinear, or the inlet sound deadening section 31 and the outlet sound deadening section 33 are arranged in a staggered manner, so that noise is not transmitted out of the outlet sound deadening section 33 in a straight line, and noise can be ensured to be attenuated in the muffler 2.
Optionally, the axis of the inlet sound-deadening segment 31 is inclined with respect to the axis of the outlet sound-deadening segment 33, so that noise is transmitted from the inlet sound-deadening segment 31 into the middle sound-deadening segment 32 in an inclined manner, and then, after the middle sound-deadening segment 32 is weakened, little noise is left to be transmitted from the outlet sound-deadening segment 33, so that a better noise reduction effect can be achieved.
Further, the axis of the outlet muffler section 33 and the axis of the intermediate muffler section 32 are collinear, so that when noise is attenuated in the intermediate muffler section 32, air flow is conveniently transmitted from the outlet muffler section 33, and thus, the workability of the range hood 10 can be further improved.
Specifically, at least a part of the sound-deadening segment 33 is provided in a reduced mouth shape in the air-out direction, and this arrangement can further play a role in noise reduction, so that user satisfaction can be further improved.
The following describes in detail the operation of the muffler 2 by way of example of the range hood 10 shown in fig. 1.
When the range hood 10 works, smoke and noise are discharged from the air outlet of the range hood body 1 and then enter the muffler 2, specifically, the smoke and the noise can enter the sound-entering section 31 first and then enter the middle sound-absorbing section 32, as the cross-sectional area of the middle sound-absorbing section 32 is larger than that of the sound-entering section 31, in the space change process, the noise is reduced, and in the middle sound-absorbing section 32, part of the noise can pass through the sound-absorbing holes 4, so that the noise can be further reduced in a reflection cancellation mode, and then enter the sound-exiting section 33 again, as the cross-sectional area of the sound-exiting section 33 is smaller than that of the middle sound-absorbing section 32, in the space change process, the noise is reduced, and finally the noise discharged along with the smoke is less, so that the noise generated by the range hood 10 is lower.
In the whole process, the smoke and the noise can flow from small volume to large volume and then to small volume, and the process can effectively reduce the noise.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (4)
1. The range hood is characterized by comprising a range hood body and a muffler, wherein the range hood body is provided with an air outlet, the muffler is arranged at the air outlet and comprises a plurality of sequentially communicated silencing sections, and a plurality of silencing holes are formed in at least one silencing section;
The plurality of silencing sections comprise a sound inlet silencing section, a middle silencing section and a sound outlet silencing section, wherein the middle silencing section is connected between the sound inlet silencing section and the sound outlet silencing section, the middle silencing section is at least one section, and the silencing holes are formed in at least one section of the middle silencing section;
the middle silencing section comprises an outer wall and an inner wall, wherein the inner wall is arranged in the outer wall and defines a silencing cavity with the outer wall, and the silencing hole is arranged on the inner wall;
the silencing cavity is filled with silencing materials;
At least one section of the middle silencing section has a cross-sectional area larger than that of the inlet silencing section and the outlet silencing section;
the plurality of the silencing sections are odd-numbered sections, the middle silencing section comprises a central silencing section, the cross section area of the silencing section presents increasing trend in the direction from the inlet silencing section to the central silencing section and in the direction from the outlet silencing section to the central silencing section, or
The middle silencing section is an even number section and comprises a first central silencing section and a second central silencing section, wherein the first central silencing section is close to the inlet silencing section compared with the second central silencing section, and the cross sectional area of the silencing section presents an increasing trend in the direction from the inlet silencing section to the first central silencing section and in the direction from the outlet silencing section to the second central silencing section;
The axis of the inlet silencing section and the axis of the outlet silencing section are not collinear.
2. The range hood of claim 1 wherein the axis of the inlet muffler section is disposed obliquely with respect to the axis of the outlet muffler section.
3. The range hood of claim 1 wherein the axis of the out-muffling segment and the axis of the intermediate muffling segment are collinear.
4. The range hood of claim 1, wherein at least a portion of the outlet muffling segment is configured as a necked down in the outlet direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711260224.6A CN109869775B (en) | 2017-12-04 | 2017-12-04 | Fume exhaust fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711260224.6A CN109869775B (en) | 2017-12-04 | 2017-12-04 | Fume exhaust fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109869775A CN109869775A (en) | 2019-06-11 |
| CN109869775B true CN109869775B (en) | 2024-12-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711260224.6A Active CN109869775B (en) | 2017-12-04 | 2017-12-04 | Fume exhaust fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109869775B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112309358A (en) * | 2019-11-19 | 2021-02-02 | 无锡小天鹅电器有限公司 | Silencing device and clothes treatment equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204329117U (en) * | 2014-12-18 | 2015-05-13 | 四川省金厨星厨卫电器有限公司 | A kind of silence exhauster for removing cooking fumes |
| CN105716135A (en) * | 2016-04-14 | 2016-06-29 | 广东美的厨房电器制造有限公司 | Extractor hood |
| CN207555694U (en) * | 2017-12-04 | 2018-06-29 | 美的集团股份有限公司 | Range hood |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE348972A (en) * | ||||
| CN104534532B (en) * | 2014-12-18 | 2016-09-21 | 宁波方太厨具有限公司 | A kind of denoising device of range hood |
| CN105423425B (en) * | 2015-12-22 | 2018-08-07 | 德胜（苏州）洋楼有限公司 | Embedded air purifier |
-
2017
- 2017-12-04 CN CN201711260224.6A patent/CN109869775B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204329117U (en) * | 2014-12-18 | 2015-05-13 | 四川省金厨星厨卫电器有限公司 | A kind of silence exhauster for removing cooking fumes |
| CN105716135A (en) * | 2016-04-14 | 2016-06-29 | 广东美的厨房电器制造有限公司 | Extractor hood |
| CN207555694U (en) * | 2017-12-04 | 2018-06-29 | 美的集团股份有限公司 | Range hood |
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| Publication number | Publication date |
|---|---|
| CN109869775A (en) | 2019-06-11 |
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