CN215256975U - Noise-reduction volute tongue, volute, fan and range hood - Google Patents
Noise-reduction volute tongue, volute, fan and range hood Download PDFInfo
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- CN215256975U CN215256975U CN202120222608.4U CN202120222608U CN215256975U CN 215256975 U CN215256975 U CN 215256975U CN 202120222608 U CN202120222608 U CN 202120222608U CN 215256975 U CN215256975 U CN 215256975U
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Abstract
The application discloses spiral shell tongue, spiral case, fan and cigarette machine of making an uproar fall. Should fall and make an uproar snail tongue includes: the noise reduction device comprises a shell, a noise reduction cavity and a noise reduction hole, wherein the noise reduction cavity is arranged in the shell, and the noise reduction hole is communicated with the noise reduction cavity; the baffle plate assembly, the baffle plate assembly set up in fall the intracavity of making an uproar, the baffle plate assembly will fall the chamber of making an uproar and separate into a plurality of and divide the cavity, every divide the cavity all with fall the hole intercommunication of making an uproar, arbitrary two divide the cavity to correspond the porosity in the hole of making an uproar that falls of casing department is different. The noise reduction volute tongue can absorb noise of different frequency bands, and has a good sound absorption effect on broadband noise.
Description
Technical Field
The application relates to the field of fans, in particular to a noise reduction volute tongue, a volute, a fan and a range hood.
Background
The volute tongue for fans such as range hoods, air conditioners and the like is mainly used for intercepting air flow and preventing the fan impeller from driving the air flow to be hollow in the fan volute and not to go out. The volute tongue can be divided into a sharp tongue, a deep tongue, a short tongue, a flat tongue and the like. For the traditional straight volute tongue, the deeper the volute tongue is, the smaller the gap between the volute tongue and the impeller is, the efficiency of intercepting the airflow is improved, but the noise is increased. Along with the improvement of user's demand, in order to satisfy the requirement of human body comfort of fan, range hood is satisfying the prerequisite of amount of wind static pressure etc. core index under, the operating noise of fan should be as low as possible. Generally speaking, the main noise source of the range hood is the aerodynamic noise generated by the fan system, especially the discrete noise generated by the interaction of the air duct outlet wake and the volute tongue of the fan. The noise can be transmitted to human ears through the suction inlet of the range hood through the air duct, so that the whole noise of the range hood can be effectively reduced by adding the sound absorption structure in the air duct.
The existing scheme is that a plurality of perforated structures are added on a volute tongue, and a sound absorption resonant cavity is added on the inner wall surface of the volute tongue, so that noise reduction can be performed on discrete noises, but the cavity is limited by the installation position, the volume and the effective depth of the cavity are not enough, the noise reduction effect can only be achieved within a certain narrow-band range, and the noise reduction effect on broadband noises is not obvious.
SUMMERY OF THE UTILITY MODEL
The technical problem that this application mainly solved provides one kind and falls spiral shell tongue, spiral case, fan and cigarette machine of making an uproar to absorb the noise of different frequency channels, have better sound absorption effect to the wide band noise.
In order to solve the technical problem, the application adopts a technical scheme that: providing a noise reducing volute tongue comprising: the noise reduction device comprises a shell, a noise reduction cavity and a noise reduction hole, wherein the noise reduction cavity is arranged in the shell, and the noise reduction hole is communicated with the noise reduction cavity; the baffle plate assembly, the baffle plate assembly set up in fall the intracavity of making an uproar, the baffle plate assembly will fall the chamber of making an uproar and separate into a plurality of and divide the cavity, every divide the cavity all with fall the hole intercommunication of making an uproar, arbitrary two divide the cavity to correspond the porosity in the hole of making an uproar that falls of casing department is different.
The shell comprises a perforated plate, and the noise reduction hole is formed in the perforated plate; the baffle plate assembly comprises at least one baffle plate, the baffle plate is connected with the perforated plate, the baffle plate divides the perforated plate into at least two sections, the sections correspond to the sub-cavities one by one, and the porosity of the noise reduction holes in each section is different.
Wherein the diameter of the noise reduction holes on each section is different.
And the noise reduction holes on each section are arranged according to a rectangular array or a circular array.
Wherein the porosity of the segments decreases along the direction of arrangement of the separators.
The partition plates are multiple, and the distance between any two adjacent partition plates is different.
Wherein the housing further comprises a first shell wall and a second shell wall, the perforated plate is connected to the first shell wall and the second shell wall, each partition connects the perforated plate, the first shell wall and the second shell wall to form the sub-chambers, and each sub-chamber has a different length along an arrangement direction of the partitions.
The noise reduction cavity is divided into a first sub-cavity, a second sub-cavity and a third sub-cavity by the partition plate assembly; the porosity of the section corresponding to the first sub-cavity is 5% -6%, the porosity of the section corresponding to the second sub-cavity is 3% -4%, and the porosity of the section corresponding to the third sub-cavity is 2% -3%.
The aperture of the noise reduction hole of the section corresponding to the first sub-cavity is 0.6-0.8 mm, the aperture of the noise reduction hole of the section corresponding to the second sub-cavity is 0.8-1 mm, and the aperture of the noise reduction hole of the section corresponding to the third sub-cavity is 1-1.2 mm.
In order to solve the technical problem, the application adopts a technical scheme that: there is provided a volute comprising a noise reducing volute tongue according to any of the embodiments described above.
In order to solve the above technical problem, the present application adopts another technical solution: there is provided a fan comprising a volute according to any of the above embodiments.
In order to solve the above technical problem, the present application adopts another technical solution: there is provided a machine for making cigarettes comprising a blower as in any one of the embodiments above.
The beneficial effect of this application is: different from the situation of the prior art, the noise reduction volute tongue is communicated with the noise reduction hole in the shell through the noise reduction cavity, so that noise can enter the noise reduction cavity from the noise reduction hole in the surface of the shell; in addition, the inner noise reduction cavity of the shell is divided into a plurality of sub-cavities by the partition plate assembly, and each sub-cavity is communicated with the noise reduction hole on the shell, so that each sub-cavity and the corresponding noise reduction hole form a sound absorption and noise reduction cavity, the plurality of sub-cavities form a sound absorption resonant cavity with a parallel structure, and the sound absorption resonant cavity has a wider noise reduction frequency band; in addition, the porosity of the noise reduction holes at the shell corresponding to any two sub-cavities is different, so that the noise reduction holes with different porosities corresponding to different sub-cavities can absorb noise of different frequency bands, the noise reduction frequency bandwidth of the noise is widened, and a better sound absorption effect is achieved on broadband noise.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of a noise reduction volute tongue provided herein;
FIG. 2 is a schematic cross-sectional view of the noise reduction volute tongue of FIG. 1;
FIG. 3 is a schematic view of a first perspective of an embodiment of a volute provided herein;
FIG. 4 is a schematic structural view of the volute of FIG. 3 from a second perspective;
figure 5 is a schematic diagram of the structure of one embodiment of a cigarette machine as provided herein.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments. The terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
The application provides a noise reduction volute tongue, wherein a noise reduction cavity in a shell is divided into a plurality of sub-cavities through a partition plate assembly, each sub-cavity is communicated with a noise reduction hole in the shell, each sub-cavity and the corresponding noise reduction hole form a sound absorption and noise reduction cavity, the plurality of sub-cavities form a sound absorption resonant cavity in a parallel structure, and the sound absorption resonant cavity has a wider noise reduction frequency band; in addition, the porosity of the noise reduction holes at the shell corresponding to any two sub-cavities is different, so that the noise reduction holes with different porosities corresponding to different sub-cavities can absorb noise of different frequency bands, the noise reduction frequency bandwidth of the noise is widened, and a better sound absorption effect is achieved on broadband noise.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of an embodiment of a noise reduction volute tongue provided in the present application, and fig. 2 is a schematic cross-sectional structural diagram of the noise reduction volute tongue in fig. 1. The present application provides a noise reducing volute tongue 10 that includes a housing 11 and a baffle plate assembly 12. A noise reduction cavity 13 is arranged in the shell 11, and the shell 11 is provided with a noise reduction hole 110 communicated with the noise reduction cavity 13; the baffle plate assembly 12 is arranged in the noise reduction cavity 13, the noise reduction cavity 13 is divided into a plurality of sub-cavities 130 by the baffle plate assembly 12, each sub-cavity 130 is communicated with the noise reduction hole 110, and the porosity of the noise reduction hole 110 at the position of the shell 11 corresponding to any two sub-cavities 130 is different.
The noise reduction volute tongue 10 is communicated with the noise reduction hole 110 on the shell 11 through the noise reduction cavity 13, so that noise can enter the noise reduction cavity 13 from the noise reduction hole 110 on the surface of the shell 11; moreover, the partition plate assembly 12 divides the noise reduction cavity 13 in the housing 11 into a plurality of sub-cavities 130, and each sub-cavity 130 is communicated with the noise reduction hole 110 on the housing 11, so that each sub-cavity 130 and the corresponding noise reduction hole 110 form a sound absorption and noise reduction cavity, and the sub-cavities 130 form a sound absorption resonant cavity of a parallel structure, and the sound absorption resonant cavity has a wide noise reduction frequency band and a good sound absorption effect on broadband noise; in addition, the porosity of the noise reduction holes 110 at the housing 11 corresponding to any two sub-cavities 130 is different, so that the noise reduction holes 110 with different porosities corresponding to different sub-cavities 130 can absorb noise of different frequency bands, thereby widening the noise reduction frequency bandwidth of the noise and improving the noise reduction effect of the broadband noise near the noise reduction volute tongue 10.
In one embodiment, the housing 11 includes a perforated plate 113, and the noise reduction holes 110 are disposed on the perforated plate 113; the baffle assembly 12 includes at least one baffle 120, the baffle 120 connects the perforated plate 113, the baffle 120 divides the perforated plate 113 into at least two sections 1130, one section 1130 is located between each two adjacent baffles 120, the sections 1130 are located in one-to-one correspondence with the subchambers 130, and the porosity of the noise reduction holes 110 in each section 1130 is different. It can be understood that, since there is a section 1130 between each two adjacent partition boards 120, each sub-cavity 130 corresponds to a section 1130, part of the noise can be absorbed by the noise reduction holes 110 on the section 1130, and the rest of the noise can be further absorbed and attenuated by the sub-cavity 130 after entering the sub-cavity 130 from the section 1130, so that the noise can be effectively reduced. In addition, because the porosity of the noise reduction holes 110 on each section 1130 is different, different sections 1130 can absorb noise in different frequency bands, so that the noise reduction frequency bandwidth of the noise is widened, and the noise reduction effect of the broadband noise near the noise reduction volute tongue 10 can be improved.
Because the porosity of the noise reduction hole 110 on each section 1130 is different, in order to ensure the strength of the perforated plate 113 and satisfy the requirement that the noise can pass through smoothly in time, the porosity of a certain section 1130 can be set to be 2% to 7%, and the noise reduction effect can be effectively improved by setting appropriate porosity. In one embodiment, as shown in FIG. 2, along the direction of the arrangement of the separators 120, the porosity of the sections 1130 decreases; namely: the porosity of the section 1130 at one end of the perforated plate 113 is greater than the porosity of the section 1130 at the other end of the perforated plate 113. For example, the perforated plate 113 includes opposing first and second ends, the section 1130 that is proximal to the first end of the perforated plate 113 has a porosity that is greater than the porosity of the section 1130 that is distal to the first end of the perforated plate 113; the section 1130 at the second end of the perforated plate 113 has the least porosity.
In one embodiment, the noise reduction holes 110 on each section 1130 have different apertures. It will be appreciated that arranging the noise reduction aperture arrays of different apertures in different sections 1130 may widen the noise reduction frequency bandwidth of the noise reduction tongue 10 to noise. An array of noise reduction holes with the same aperture may be arranged on the surface of a single section 1130, for example, the aperture of the noise reduction hole 110 of a certain section 1130 may be between 0.6 mm and 1.2 mm.
Specifically, the noise reduction apertures 110 on each segment 1130 are arranged in a rectangular array or a circular array. It will be appreciated that the noise reduction apertures 110 are arranged in a rectangular array or a circular array on the surface of a single segment 1130, such that the noise reduction apertures 110 may be evenly distributed over the segment 1130, thereby effectively absorbing and attenuating noise.
In an embodiment, when a plurality of the spacers 120 are included, the distance between any adjacent two spacers 120 is different. Because the partition boards 120 included in the partition board assembly 12 can partition the noise reduction cavity 13 into the plurality of sub-cavities 130, and the distance between any two adjacent partition boards 120 is different, the volumes of any two adjacent sub-cavities 130 formed may be different, and because the volume of each sub-cavity 130 is different, different sub-cavities 130 can absorb noise in different frequency bands, so that the noise reduction frequency bandwidth of the noise is widened, and the noise reduction effect of the broadband noise can be improved. It will be appreciated that if there is only one baffle 120, the baffles 120 may be arranged at different distances from the opposite end walls of the noise reduction chamber 13, thereby providing different volumes for the scoring chamber 130.
Further, the depth of each sub-cavity 130 may be the same, or different sub-cavities 130 may be set to different depths according to the requirement. For example: in one embodiment, the depth of any two sub-cavities 130 is the same. In another embodiment, at least some of the sub-cavities 130 have different depths, and the sound absorption frequency can be changed and the noise reduction effect can be improved by adjusting the depths of the sub-cavities 130. Specifically, because the depth of the noise reduction cavity of a general volute tongue is limited by the installation position, the effective depth of the cavity is not enough, the noise reduction effect can only be achieved within a certain narrow band range, discrete noise cannot be reduced near a discrete noise source, and the noise reduction effect is not obvious, while the noise reduction volute tongue 10 of the present application divides the noise reduction cavity 13 into a plurality of sub-cavities 130 through the partition plate assembly 12, and different sub-cavities 130 are set to different depths, so that the sound absorption frequency band of the noise reduction volute tongue 10 can be widened, noise can be absorbed in the sub-cavities 130, and the noise reduction effect on the discrete noise near the noise reduction volute tongue 10 can be improved.
In one embodiment, the housing 11 further includes a first housing wall 111 and a second housing wall 112, the perforated plate 113 is connected to the first housing wall 111 and the second housing wall 112, and each of the partitions 120 connects the perforated plate 113, the first housing wall 111, and the second housing wall 112. Therefore, each sub-chamber 130 is formed by surrounding the first shell wall 111, the second shell wall 112, the perforated plate 113 and the partition 120, each sub-chamber 130 corresponds to one section 1130 of the perforated plate 113, so that part of the noise can be absorbed by the noise reduction holes 110 of the section 1130, and the rest of the noise can be further absorbed and attenuated by the sub-chamber 130 after entering the sub-chamber 130 from the section 1130, thereby effectively reducing the noise. Specifically, in some embodiments, as required, the length of each sub-chamber 130 along the arrangement direction of the partition boards 120 is different, that is, the distance between the outermost partition board 120 and the end wall of its adjacent noise reduction chamber 13 and between every two adjacent partition boards 120 is different, that is, the volume of each sub-chamber 130 is different, so as to change the sound absorption frequency and improve the noise reduction effect.
Optionally, in this embodiment, the baffle 120 is constructed of an elastomeric material. Specifically, the partition 120 may be made of elastic metal, elastic plastic, rubber, or elastic composite material, or the like. The separator 120 may include a reinforcing rib (not shown). Alternatively, a reinforcing rib may be provided on the separator 120, and the reinforcing rib has high bending rigidity, thereby preventing the separator 120 from warping, wrinkling, or twisting.
In one embodiment, the baffle plate assembly 12 includes two baffle plates 120, the two baffle plates 120 dividing the noise reduction chamber 13 into a first sub-chamber, a second sub-chamber, and a third sub-chamber; the porosity of the section 1130 corresponding to the first cavity is 5% to 6%, specifically 5%, 5.58%, and 6%, the porosity of the section 1130 corresponding to the second cavity is 3% to 4%, specifically 3%, 3.87%, and 4%, and the porosity of the section 1130 corresponding to the third cavity is 2% to 3%, specifically 2%, 2.2%, and 3%. By arranging the micro-perforation array on the sound absorption surface of the noise reduction volute tongue 10 and the different porosity of the section 1130 in the perforated plate 113 corresponding to each sub-cavity 130, the noise reduction frequency bandwidth of noise can be widened, and a better sound absorption effect is achieved.
Further, in an embodiment, the aperture of the noise reduction hole 110 of the section 1130 corresponding to the first sub-cavity is 0.6 to 0.8 mm, specifically, 0.6 mm, 0.75 mm, and 0.8 mm, the aperture of the noise reduction hole 110 of the section 1130 corresponding to the second sub-cavity is 0.8 to 1 mm, specifically, 0.8 mm, 0.95 mm, and 1 mm, and the aperture of the noise reduction hole 110 of the section 1130 corresponding to the third sub-cavity is 1 to 1.2 mm, specifically, 1 mm, 1.05 mm, and 1.2 mm. By arranging the micro-perforated array on the sound absorption surface of the noise reduction volute tongue 10, the porosity of the section 1130 in the perforated plate 113 corresponding to each sub-cavity 130 is different, and the aperture of the noise reduction hole 110 on different sections 1130 is different, so that the noise reduction frequency bandwidth for noise can be widened, and a better sound absorption effect is achieved. According to the acoustic analogy circuit, the noise reduction volute tongue 10 is composed of a perforated plate 113 and a plurality of sub-cavities 130, one sub-cavity 130 is matched with one segment 1130 in the perforated plate 113, and due to the fact that the porosity and the aperture of the noise reduction holes 110 in different segments 1130 are different, different segments 1130 and sub-cavities 130 have a superposed effect on sound absorption coefficients, the noise reduction volute tongue 10 has a good noise reduction effect, and through tests, the noise reduction volute tongue 10 of the embodiment can achieve the main noise reduction frequency of 400 and 1200Hz, so that the noise reduction volute tongue 10 can achieve a good noise reduction frequency band effect, and has a good sound absorption and noise reduction effect.
In another aspect of the present application, please refer to fig. 3 and fig. 4, wherein fig. 3 is a schematic structural diagram of a first viewing angle of an embodiment of the volute provided in the present application, and fig. 4 is a schematic structural diagram of a second viewing angle of the volute of fig. 3. Specifically, the volute 30 of the present application includes the volute body 31 and the noise reduction volute tongue 10 of any of the above embodiments. The volute body 31 comprises an air outlet, the noise reduction hole 110 of the noise reduction volute tongue 10 is arranged corresponding to the air outlet, and the arrangement towards the air outlet can achieve a good sound absorption effect on discrete noise in the volute 30.
Please refer to fig. 1 and fig. 2 and the related text description of the above embodiment for a specific structure of the noise reduction volute tongue 10 in the volute 30 of the present application, which is not repeated herein.
In this embodiment, through the reasonable design of the partition plate assembly 12 in the noise reduction volute tongue 10 of the volute 30 and the noise reduction holes 110 on the housing 11, the noise can enter the noise reduction cavity 13 from the noise reduction holes 110 on the surface of the housing 11 through the communication between the noise reduction cavity 13 and the noise reduction holes 110 on the housing 11, and further, because the partition plate assembly 12 divides the noise reduction cavity 13 in the housing 11 into a plurality of sub-cavities 130, and each sub-cavity 130 is communicated with the noise reduction holes 110 on the housing 11, each sub-cavity 130 and the corresponding noise reduction hole 110 form a noise absorption cavity, so that the sub-cavities 130 form a sound absorption cavity with a parallel structure, the sound absorption cavity has a wider noise reduction frequency band and has a better sound absorption effect on broadband noise, in addition, the porosity of the noise reduction holes 110 at the housing 11 corresponding to any two sub-cavities 130 is different, so that the noise reduction holes 110 with different porosities corresponding to different sub-cavities 130 can absorb noise in different frequency bands, the noise reduction frequency bandwidth of the noise is widened, and the noise reduction effect of the broadband noise near the noise reduction volute tongue 10 can be improved.
In yet another aspect of the present application, there is also provided a fan, in particular, comprising the volute 30 of any of the above embodiments.
For the detailed structure of the volute 30, please refer to fig. 1-4 and the text description related to the above embodiments, which are not repeated herein.
In this embodiment, the partition plate assembly 12 in the noise reduction volute tongue 10 of the volute 30 in the fan and the noise reduction holes 110 on the housing 11 are reasonably designed, and the noise reduction cavity 13 is communicated with the noise reduction holes 110 on the housing 11, so that noise can enter the noise reduction cavity 13 from the noise reduction holes 110 on the surface of the housing 11, and the partition plate assembly 12 divides the noise reduction cavity 13 in the housing 11 into a plurality of sub-cavities 130, and each sub-cavity 130 is communicated with the noise reduction holes 110 on the housing 11, so that each sub-cavity 130 and the corresponding noise reduction hole 110 form a noise absorption and reduction cavity, so that the plurality of sub-cavities 130 form a noise absorption and reduction cavity with a parallel structure, the noise absorption and reduction cavity has a wider noise reduction frequency band and a better noise absorption effect on broadband noise, and in addition, the porosity of the noise reduction holes 110 at the housing 11 corresponding to any two sub-cavities 130 is different, so that the noise reduction holes 110 corresponding to different porosities of different sub-cavities 130 can absorb noise at different frequency bands, the noise reduction frequency bandwidth of the noise is widened, the noise reduction effect of the broadband noise near the noise reduction volute tongue 10 can be improved, and the noise generated by the fan system is effectively reduced.
Please refer to fig. 5, fig. 5 is a schematic structural diagram of an embodiment of a cigarette making machine provided in the present application. The application also provides a cigarette making machine 50, the cigarette making machine 50 comprises a box body 51 and a fan 52, the fan 52 is the fan described in any of the above embodiments, wherein the fan 52 is located on the box body 51.
According to the cigarette making machine 50 provided by the application, the partition plate assembly 12 in the noise reduction volute tongue 10 of the volute 30 in the fan 52 and the noise reduction holes 110 on the casing 11 are reasonably designed, the noise can enter the noise reduction cavity 13 from the noise reduction holes 110 on the surface of the casing 11 through the communication between the noise reduction cavity 13 and the noise reduction holes 110 on the casing 11, moreover, the noise reduction cavity 13 in the casing 11 is divided into a plurality of sub-cavities 130 by the partition plate assembly 12, each sub-cavity 130 is communicated with the noise reduction holes 110 on the casing 11, so that each sub-cavity 130 and the corresponding noise reduction holes 110 form a sound absorption and noise reduction cavity, and the plurality of sub-cavities 130 form a sound absorption and resonance cavity with a parallel structure, and the sound absorption and resonance cavity has a wide noise reduction frequency band and a good sound absorption effect on broadband noise, in addition, the porosity of the noise reduction holes 110 at the casing 11 corresponding to any two sub-cavities 130 is different, so that the noise reduction holes 110 corresponding to different sub-cavities 130 can absorb noise at different frequency bands, the noise reduction frequency bandwidth of noise is widened, the noise reduction effect of broadband noise near the noise reduction volute tongue 10 can be improved, the noise generated by a fan system is effectively reduced, the noise of the volute casing 30 is reduced when the cigarette machine 50 works, and the sound quality of the cigarette machine 50 is improved. For the same reason as the volute 30 and the noise reduction tongue 10, please refer to the above-mentioned text descriptions of the volute 30 and the noise reduction tongue 10, and the detailed description thereof is omitted here.
It should be understood that the fan described herein may also be used in other devices, such as household appliances such as air conditioners.
In this application, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In the description of the present application, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present application.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," 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 application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (12)
1. A noise reducing volute tongue, comprising:
the noise reduction device comprises a shell, a noise reduction cavity and a noise reduction hole, wherein the noise reduction cavity is arranged in the shell, and the noise reduction hole is communicated with the noise reduction cavity;
the baffle plate assembly, the baffle plate assembly set up in fall the intracavity of making an uproar, the baffle plate assembly will fall the chamber of making an uproar and separate into a plurality of and divide the cavity, every divide the cavity all with fall the hole intercommunication of making an uproar, arbitrary two divide the cavity to correspond the porosity in the hole of making an uproar that falls of casing department is different.
2. The noise reducing volute tongue of claim 1,
the shell comprises a perforated plate, and the noise reduction hole is formed in the perforated plate;
the baffle plate assembly comprises at least one baffle plate, the baffle plate is connected with the perforated plate, the baffle plate divides the perforated plate into at least two sections, the sections correspond to the sub-cavities one by one, and the porosity of the noise reduction holes in each section is different.
3. The noise reducing volute tongue of claim 2, wherein the noise reducing holes in each of the sections have different diameters.
4. The noise reducing volute tongue of claim 2, wherein the noise reducing holes in each of the sections are arranged in a rectangular array or a circular array.
5. The noise reducing volute tongue of claim 2, wherein the porosity of the segments decreases along the direction of the spacer plate array.
6. The noise reducing volute tongue as defined in claim 2 wherein the plurality of spacers are spaced apart by a different distance between any two adjacent spacers.
7. The noise reducing volute tongue of claim 2, wherein the housing further comprises a first wall and a second wall, the perforated plate is connected to the first wall and the second wall, each of the partitions connects the perforated plate, the first wall, and the second wall to form the subchambers, and each of the subchambers has a different length along a direction of the partition.
8. A noise reducing volute tongue according to any of claims 2 to 7,
the baffle plate assembly divides the noise reduction cavity into a first sub-cavity, a second sub-cavity and a third sub-cavity;
the porosity of the section corresponding to the first sub-cavity is 5% -6%, the porosity of the section corresponding to the second sub-cavity is 3% -4%, and the porosity of the section corresponding to the third sub-cavity is 2% -3%.
9. The noise reducing volute tongue of claim 8,
the aperture of the noise reduction hole of the section corresponding to the first sub-cavity is 0.6-0.8 mm, the aperture of the noise reduction hole of the section corresponding to the second sub-cavity is 0.8-1 mm, and the aperture of the noise reduction hole of the section corresponding to the third sub-cavity is 1-1.2 mm.
10. A volute comprising a noise reducing tongue as claimed in any one of claims 1 to 9.
11. A fan comprising the volute of claim 10.
12. A machine as claimed in claim 11, wherein said machine comprises a blower.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120222608.4U CN215256975U (en) | 2021-01-26 | 2021-01-26 | Noise-reduction volute tongue, volute, fan and range hood |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120222608.4U CN215256975U (en) | 2021-01-26 | 2021-01-26 | Noise-reduction volute tongue, volute, fan and range hood |
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| CN215256975U true CN215256975U (en) | 2021-12-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114483644A (en) * | 2020-11-12 | 2022-05-13 | 佛山市顺德区美的洗涤电器制造有限公司 | Centrifugal impeller, centrifugal fan and range hood |
-
2021
- 2021-01-26 CN CN202120222608.4U patent/CN215256975U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114483644A (en) * | 2020-11-12 | 2022-05-13 | 佛山市顺德区美的洗涤电器制造有限公司 | Centrifugal impeller, centrifugal fan and range hood |
| CN114483644B (en) * | 2020-11-12 | 2024-03-26 | 佛山市顺德区美的洗涤电器制造有限公司 | Centrifugal impeller, centrifugal fan and fume absorbing equipment |
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20221102 Address after: 241000 west side of 3 / F, No.5 office building, new energy and new materials gathering area, Fuzhou Road, Jiangbei District, Wuhu City, Anhui Province Patentee after: Wuhu Midea intelligent kitchen electricity Manufacturing Co.,Ltd. Address before: No.20 Gangqian Road, industrial park, Beijiao Town, Foshan City, Guangdong Province, 528311 Patentee before: FOSHAN SHUNDE MIDEA WASHING APPLIANCES MANUFACTURING Co.,Ltd. |