CN215929699U - Noise reduction assembly for volute, volute assembly and range hood - Google Patents

Abstract

The utility model relates to the field of electric appliances, and provides a noise reduction assembly for a volute, the volute assembly and a range hood. A noise reduction assembly for a volute, comprising: the silencing layer is suitable for being attached to a coaming of the volute and covers the through hole of the coaming; a fixing member stacked on the sound-deadening layer; the fixing part is suitable for pressing at least the edge part of the sound attenuation layer, and a plurality of flexible first bulges are arranged on the edge of the first side, facing away from the fixing part, of the sound attenuation layer. According to the noise reduction assembly for the volute, under the compression effect of the fixing part, the first bulge is extruded and deformed, so that the first bulge can fill a gap between the volute enclosing plate and the joint surface of the silencing layer, the sealing performance of the noise reduction assembly is improved, gas in the volute can be further prevented from leaking along the edge part of the silencing layer, the normal work of the range hood is guaranteed, and the noise of the whole range hood is reduced.

Description

Noise reduction assembly for volute, volute assembly and range hood

Technical Field

The utility model relates to the technical field of electric appliances, in particular to a noise reduction assembly for a volute, the volute assembly and a range hood.

Background

In the prior art, a sound absorption material is arranged in the circumferential direction of a volute casing enclosing plate in the traditional technical scheme. The noise reduction device can reduce the noise inside the volute and also can optimize the reverberation noise inside the whole machine. Because the volute coaming is perforated, the fixing structure in the related technology can not enable the sound absorption material to be completely attached to the volute coaming tightly, when gas flows in the volute, the gas in the volute can generate gas leakage through the perforation of the volute coaming, so that the flow of the whole range hood is reduced, the disorder of the flow field in the whole range hood is aggravated, the flow of the whole range hood is reduced, a new noise problem is caused, and the noise reduction target of the whole range hood can not be effectively achieved.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides the noise reduction assembly for the volute, under the compression action of the fixing part, the first bulge is extruded and deformed, so that the first bulge can fill the gap between the volute enclosing plate and the joint surface of the silencing layer, the sealing performance of the noise reduction assembly is further improved, the gas in the volute can be further prevented from leaking along the edge part of the silencing layer, the normal work of the range hood is ensured, and the noise of the whole range hood is reduced.

The utility model also provides a volute assembly.

The utility model further provides the range hood.

A noise reduction assembly for a volute according to an embodiment of the first aspect of the utility model, comprising:

the silencing layer is suitable for being attached to a coaming of the volute and covers the through hole of the coaming;

a fixing member stacked on the sound-deadening layer;

the fixing part is suitable for pressing at least the edge part of the sound attenuation layer, and a plurality of flexible first bulges are arranged on the edge of the first side, facing away from the fixing part, of the sound attenuation layer.

According to the noise reduction assembly for the volute, the fixing part is used for pressing the noise reduction layer on the enclosing plate of the volute, the noise reduction layer has a noise reduction effect and can also shield the through hole to play a certain sealing effect, further, the fixing part is used for pressing the edge part of the noise reduction layer on the enclosing plate, and the first bulges arranged on the edge of the noise reduction layer are flexible, so that the first bulges are extruded and deformed under the pressing effect of the fixing part, the first bulges can fill the gap between the enclosing plate of the volute and the adhering surface of the noise reduction layer, the sealing performance of the noise reduction assembly is improved, the gas in the volute can be further prevented from leaking along the edge part of the noise reduction layer, the normal work of the range hood is ensured, and the noise of the whole range hood is reduced.

According to one embodiment of the utility model, the sound-deadening layer is sound-absorbing cotton.

According to one embodiment of the utility model, the first protrusions are arranged at intervals along the length direction of the edge of the first side.

According to one embodiment of the utility model, the distance between two adjacent first protrusions is L1, and the width of the first protrusions along the length direction of the edge is L2, wherein L1 < L2.

According to one embodiment of the utility model, the edge of the sound-deadening layer facing the second side of the fixing part is provided with a plurality of flexible second protrusions, and the plurality of second protrusions are arranged at intervals along the length direction of the edge of the second side.

According to one embodiment of the utility model, the distance between two adjacent second protrusions is L3, and the width of the second protrusions along the length direction of the edge is L4, wherein L3 < L4.

According to an embodiment of the utility model, the first protrusion and the second protrusion are arranged in a staggered manner.

According to one embodiment of the utility model, the fixing member comprises a first end portion, a second end portion and a fastening portion, the first end portion and the second end portion being adapted to fix the end portions of the sound-deadening layer, the fastening portion being detachably connected to at least one of the first end portion and the second end portion, the fastening portion being adapted to press at least side edge portions of the sound-deadening layer.

According to one embodiment of the utility model, the first protrusion and the second protrusion have a rectangular parallelepiped shape or a truncated pyramid shape.

According to one embodiment of the present invention, the first protrusions and/or the second protrusions are integrally formed with the sound-deadening layer by hot press molding.

A volute assembly according to an embodiment of the second aspect of the utility model includes:

a noise reduction assembly for a volute according to an embodiment of the first aspect of the utility model;

the volute body is provided with a surrounding plate, the surrounding plate is provided with a plurality of through holes, and the noise reduction assembly for the volute is fixed on the outer side of the surrounding plate and covers the through holes.

The effect of the volute assembly according to the present invention is similar to that of the noise reduction assembly according to the first aspect of the present invention, and the present invention is not described herein again.

According to the range hood of the embodiment of the third aspect of the utility model, the volute component is arranged.

The effect of the range hood according to the present invention is similar to that of the noise reduction assembly according to the first aspect of the present invention, and the present invention is not described herein again.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

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

FIG. 1 is a schematic perspective view of a volute assembly provided by one embodiment of the present invention;

FIG. 2 is a schematic perspective view of a volute body provided by one embodiment of the utility model;

FIG. 3 is a schematic perspective view of an acoustical layer provided in accordance with an embodiment of the present invention;

FIG. 4 is a schematic diagram of a first side of an acoustical layer provided in accordance with an embodiment of the present invention;

FIG. 5 is a schematic diagram of a second side of the sound damping layer provided in accordance with one embodiment of the present invention;

FIG. 6 is a side view of an acoustical layer provided in accordance with one embodiment of the present invention;

FIG. 7 is a side view of an acoustical layer provided in accordance with another embodiment of the present invention;

FIG. 8 is a side view of an acoustical layer provided in accordance with yet another embodiment of the present invention;

FIG. 9 is a schematic view of a first side of an acoustical layer provided in accordance with yet another embodiment of the present invention;

fig. 10 is a schematic structural diagram of a second side of the sound-deadening layer according to still another embodiment of the present invention.

FIG. 11 is a perspective view of a securing member provided in accordance with one embodiment of the present invention;

FIG. 12 is a perspective view of another perspective of the volute assembly provided by one embodiment of the present invention;

FIG. 13 is a partial perspective view of a volute assembly provided by one embodiment of the present invention;

FIG. 14 is an enlarged view at A of FIG. 13;

FIG. 15 is a perspective view of yet another perspective of a volute assembly provided by an embodiment of the present invention;

FIG. 16 is an enlarged view at B in FIG. 15;

FIG. 17 is a perspective view of a volute assembly provided by another embodiment of the present invention;

FIG. 18 is an enlarged view at C of FIG. 17;

FIG. 19 is a perspective view of another perspective of the volute assembly provided by another embodiment of the present invention;

FIG. 20 is an enlarged view at D of FIG. 19;

figure 21 is an exploded schematic view of a volute assembly provided by another embodiment of the present invention;

FIG. 22 is an exploded view of a fixing member provided in accordance with another embodiment of the present invention;

FIG. 23 is a schematic perspective view of a first end provided in accordance with another embodiment of the present invention;

FIG. 24 is a perspective view of a second rim according to another embodiment of the present invention;

FIG. 25 is a perspective view of a second end portion provided in accordance with another embodiment of the present invention;

FIG. 26 is a partial schematic view of a fastening member according to another embodiment of the present invention;

fig. 27 is a partially exploded view of a fixing member according to still another embodiment of the present invention.

Reference numerals:

1. a volute body; 11. enclosing plates; 112. a through hole;

2. a sound-deadening layer; 21. a first protrusion; 22. a second protrusion;

3. a first end portion; 31. a connecting portion; 4. a second end portion;

5. a fastening section; 51. a first frame side; 52. a second frame side;

6. an adjustment member; 61A, a hoop; 62A, latch; 63A, a first hole groove; 64A, a second hole groove;

61B, a first clamping piece; 62B, a second clamping piece; 63B, a first clamping groove; 64B, a second clamping groove;

61C, a spring plate; 62C, adjusting holes.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.

In embodiments of the utility model, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 an embodiment of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

As shown in fig. 1 to 27, the noise reduction assembly for a scroll casing according to the embodiment of the first aspect of the present invention includes a sound-deadening layer 2 and a fixing member.

The silencing layer 2 is suitable for being attached to the surrounding plate 11 of the volute and covers the through hole 112 of the surrounding plate 11; the fixing member is laminated with the sound deadening layer 2.

The fixing part is adapted to press against at least a rim portion of the sound-damping layer 2, the rim of the first side of the sound-damping layer 2 facing away from the fixing part being provided with a plurality of first protrusions 21.

According to the noise reduction assembly for the volute, the fixing component is used for pressing the noise reduction layer 2 on the enclosing plate 11 of the volute, the noise reduction layer 2 can shield the through hole 112 to play a certain sealing role while having a noise reduction function, and further, since the fixing member presses the edge portion of the sound-deadening layer 2 against the apron 11, and since the plurality of first protrusions 21 provided at the edge of the sound-deadening layer 2 are flexible, the first protrusions 21 are deformed by being pressed by the fixing member, so that the first projection 21 can fill the gap between the volute wall 11 and the abutting surface of the sound-deadening layer 2, and then make the leakproofness of the subassembly of making an uproar of falling improve, can further prevent that the inside gas of spiral case from taking place to leak along the border part of noise damping layer 2 to guaranteed range hood's normal work, and reduced the noise of complete machine.

In the related art, a through hole is usually formed in a surrounding plate of the volute, and a sound absorbing material covers the through hole to play a role in sound attenuation. However, although the related art proposes a structure that the sound-absorbing material is fixed by the fixing frame, the structure cannot ensure the close adhesion between the sound-absorbing material and the volute casing surrounding plate. When gas flows in the volute, the gas in the volute can generate gas leakage through the through holes of the volute enclosing plate, and the leaked gas is easy to leak from the edge of the enclosing plate, so that the flow of the whole range hood is reduced, and the chaos of the flow field in the whole range hood is aggravated. If the fixing structure in the related art is adopted, not only the flow of the whole machine is reduced, but also a new noise problem is caused, so that the noise reduction target of the whole machine cannot be effectively achieved.

Therefore, in order to solve the above technical problems, in the noise reduction assembly provided by the present invention, at least the edge portion of the sound reduction layer 2 is compressed by the fixing member, so that the flexible first protrusion 21 fills the gap between the sound reduction layer 2 and the surrounding plate 11, which not only can realize the close fit between the sound reduction layer 2 and the surrounding plate 11, but also ensures the tightness of the edge portion, so that the gas cannot easily leak from the edge portion, and the noise reduction assembly has a simple structure and a low cost.

According to the embodiment of the present invention, the sound-deadening layer 2 may be made of a hard material or a soft material, the present invention is not particularly limited, and the sound-deadening layer 2 may be, but not limited to, a sound-deadening cotton, a sound-deadening felt, or a sound-absorbing plate, as long as the sound-deadening layer 2 can absorb or insulate sound. The flexible first protrusion 21 may be, but not limited to, a soft material such as soundproof cotton, soundproof felt, and rubber.

As shown in fig. 4, according to the embodiment of the present invention, a first side of the sound-absorbing layer 2 facing away from the fixing component is an attaching surface of the sound-absorbing layer 2 attaching to the surrounding plate 11, a plurality of first protrusions 21 are disposed at an edge portion of the attaching surface, and when the fixing component presses the non-attaching surface of the sound-absorbing layer 2, the first protrusions 21 on the attaching surface are deformed by extrusion, so that the first protrusions 21 can fill a gap existing between the attaching surface of the sound-absorbing layer 2 and the surrounding plate 11.

According to one embodiment of the utility model, the sound damping layer 2 is sound absorbing cotton. Thus, the sound absorption cotton is flexible and telescopic, can be pressed on the coaming 11 by the fixing part, and has low cost. And the flexible sound-absorbing cotton is matched with the flexible first bulge 21, so that the sealing performance of the noise reduction assembly can be further improved. For example, the first protrusions 21 are also sound absorbing cotton, and the first protrusions 21 and the sound absorbing layer 2 are integrally formed by hot pressing.

As shown in fig. 4, 6 and 7, according to an embodiment of the present invention, a plurality of first protrusions 21 are arranged and spaced apart along a length direction of an edge of the first side. In this way, the first protrusions 21 are arranged along the length of the edge, and when the sound-deadening layer 2 is pressed against the surrounding plate 11, it is ensured that each part of the edge of the adhering surface of the sound-deadening layer 2 can be sufficiently sealed.

As shown in fig. 6 and 7, according to an embodiment of the present invention, the distance between two adjacent first protrusions 21 is L1, and the width of the first protrusions 21 along the length direction of the edge is L2, wherein L1 < L2. Thus, by controlling the distance between two adjacent first protrusions 21, the first protrusions 21 can be ensured to fully fill the gap between the sound-absorbing layer 2 and the enclosing plate 11 after compression deformation, and the situation that the fit is not tight due to the overlarge gap between the first protrusions 21 is prevented.

As shown in fig. 6 and 7, according to an embodiment of the present invention, L1 is not less than 3mm, and L2 is greater than L1. Of course, L1 and L2 may have other size relationships and specific numerical values, and the present invention is not limited thereto.

As shown in fig. 5 and 6, according to an embodiment of the present invention, the edge of the sound-deadening layer 2 facing the second side of the fixing member is provided with a plurality of second protrusions 22, and the plurality of second protrusions 22 are arranged and spaced apart along the length direction of the edge of the second side. That is, the non-abutting face of the sound-deadening layer 2 with respect to the shroud 11 is also provided with a plurality of second protrusions 22.

Thus, when the fixing part presses the sound-deadening layer 2 against the surrounding plate 11, the second protrusions 22 between the fixing part and the sound-deadening layer 2 are extruded and deformed, and the first protrusions 21 between the sound-deadening layer 2 and the surrounding plate 11 are also extruded and deformed, so that the gap between the fixing part and the surrounding plate 11 is tightly filled by the sound-deadening layer 2, the first protrusions 21 and the second protrusions 22, and the sealing performance of the noise reduction assembly is further improved.

As shown in fig. 6, according to an embodiment of the present invention, the distance between two adjacent second protrusions 22 is L3, and the width of the second protrusions 22 along the length direction of the edge is L4, wherein L3 < L4. Thus, by controlling the distance between two adjacent second protrusions 22, it can be ensured that the second protrusions 22 can fully fill the gap between the sound-deadening layer 2 and the fixing member after compressive deformation, and the occurrence of loose fitting due to too large gap between the second protrusions 22 is prevented.

As shown in fig. 6, according to an embodiment of the present invention, L3 is not less than 3mm, and L4 is greater than L3. Of course, L3 and L4 may have other size relationships and specific numerical values, and the present invention is not limited thereto.

As shown in fig. 8, according to an embodiment of the present invention, the first protrusion 21 and the second protrusion 22 are disposed to be offset up and down. In this way, the structure arranged in a staggered manner can realize the complementation of the first protrusion 21 and the second protrusion 22 when being compressed, and the whole sealing performance after compression is better. For example, in the length direction of the fastening part 5, the distance between the adjacent first protrusions 21 and second protrusions 22 is L5, and the widths of the first protrusions 21 and second protrusions 22 are both L6, where L5 < L6. Of course, L5 and L6 may have other size relationships, and the utility model is not limited thereto.

As shown in fig. 9, in an embodiment of the present invention, adjacent first protrusions 21 may be partially connected together to form a larger first protrusion 21, so that the difficulty of the manufacturing process may be reduced.

As shown in fig. 10, in one embodiment of the present invention, adjacent second protrusions 22 may be partially connected together to form a larger second protrusion 22, so that the difficulty of the manufacturing process may be reduced.

As shown in fig. 4 to 10, according to one embodiment of the present invention, the first protrusion 21 and the second protrusion 22 have a rectangular parallelepiped shape or a truncated pyramid shape. In this way, the first and second projections 21, 22 may better fill the gap between the securing member and the shroud 11. Of course, the first protrusion 21 and the second protrusion 22 may have other shapes, and the utility model is not limited thereto.

According to one embodiment of the present invention, the first protrusions 21 and/or the second protrusions 22 are integrally formed with the sound-deadening layer 2 by means of hot press molding. In this way, manufacturing and assembly is facilitated.

As shown in fig. 11, according to one embodiment of the present invention, the fixing member includes a first end portion 3, a second end portion 4, and a fastening portion 5, the first end portion 3 and the second end portion 4 are adapted to fix the end portions of the sound-deadening layer 2, the fastening portion 5 is detachably coupled to at least one of the first end portion 3 and the second end portion 4, and the fastening portion 5 is adapted to press at least a side edge portion of the sound-deadening layer 2.

Still provide the structure of fixing sound absorbing material through fire-retardant glue among the correlation technique, but above-mentioned structure has the defect that the construction degree of difficulty is big, the later maintenance is with high costs to, fire-retardant glue has the risk of coming unstuck after long-term the use, and the reliability of structure is lower.

Therefore, in order to solve the above technical problem, according to some embodiments of the present invention, the fastening portion 5 may be detachably connected with the first end portion 3, and the fastening portion 5 is fixedly connected with the second end portion 4 or integrally formed; the fastening part 5 can also be detachably connected with the second end part 4, and the fastening part 5 is fixedly connected with the first end part 3 or integrally formed; the fastening portion 5 may also be detachably connected to both the first end portion 3 and the second end portion 4. Like this, through the connection of dismantling of fastening portion 5, improved the convenience of assembly, the cost is lower, structural reliability is stronger.

As shown in fig. 1, according to one embodiment of the present invention, an adjusting member 6 is provided between at least one of the first end portion 3 and the second end portion 4 and the fastening portion 5, and the adjusting member 6 is used to detach or fix the fastening portion 5. Thus, the fixing and the dismounting of the fastening part 5 can be realized through the adjusting part 6, and the structure is simple and the assembly is convenient.

In some embodiments of the present invention, the adjusting member 6 may be a hook and loop fastener, a latch connection structure, a snap connection structure, a rolled strip connection structure, etc., and the present invention is not particularly limited thereto as long as the adjusting member 6 can achieve the detachment and installation of the fastening part 5.

As shown in fig. 11, according to an embodiment of the present invention, the adjusting member 6 includes a clamp 61A and an adjusting member, the fastening portion 5 is connected to the first end portion 3 or the second end portion 4 through the clamp 61A, and the adjusting member is rotatably disposed inside the clamp 61A to be suitable for detaching or fixing the fastening portion 5.

In this way, the fastening of the fastener can be achieved by rotating the adjustment member to compress the fastening portion 5 and the first end portion 3 or the second end portion 4 inside the yoke 61A; the adjustment member may be rotated in the reverse direction to unscrew the adjustment member from the band 61A, so that the fastening portion 5 inside the band 61A is released from the compressed state, so that the fastener can be taken out from inside the band 61A, and the detachment of the fastener is achieved.

In some embodiments of the utility model, as shown in fig. 16, a portion of the first end portion 3 or the second end portion 4 forms the connecting portion 31, the fastening portion 5 is a rim, and the fastening portion 5, the connecting portion 31 and the adjustment member are fitted together inside the band 61A. The user can easily take out the fastening portion 5 by rotating the adjustment member so that the fastening member and the connecting portion 31 are pressed in the clip 61A, or so that the fastening portion 5 is loosened. The adjusting member may be a latch 62A or a truncated cone-shaped column, or may be a flexible column that is interference-fitted in the clip 61A, or of course, the adjusting member may have other structures, and the utility model is not limited herein.

As shown in fig. 11 to 16, according to one embodiment of the present invention, at least one of the first end portion 3 and the second end portion 4 is provided with a connecting portion 31, the connecting portion 31 is provided with a plurality of first hole grooves 63A, the plurality of first hole grooves 63A are arranged along a length direction of the fastening portion 5, and the fastening portion 5 is provided with a plurality of second hole grooves 64A in a length direction thereof.

The adjusting member is a latch 62A, the clamp 61A is sleeved on the connecting portion 31, the fastening portion 5 and the outer side of the latch 62A, and the thread of the latch 62A is rotatably matched with the first hole groove 63A and the second hole groove 64A so as to be suitable for adjusting the length of the fastening portion 5.

In this way, the length of the fastening portion 5 can be adjusted by rotating the latch 62A, the threads cooperate with the first hole groove 63A and the second hole groove 64A, and when the latch 62A is rotated, the threads will drive the fastening portion 5 to move relative to the connecting portion 31, so that the fastening portion 5 moves toward a direction close to or away from the connecting portion 31.

When the latch 62A is rotated to move the fastening portion 5 away from the connecting portion 31, the length of the fastening portion 5 becomes long, and at this time, the fastening portion 5 no longer presses the noise damping layer 2, thereby facilitating adjustment or removal of the noise damping layer 2; when the latch 62A is rotated to move the fastening portion 5 close to the connecting portion 31, the length of the fastening portion 5 becomes short, and at this time, the fastening portion 5 gradually presses the side of the noise-damping layer 2, thereby achieving the fixing and sealing of the noise-damping layer 2.

In one embodiment of the present invention, the fastening portion 5 includes two frame rims, the first end portion 3 is formed with two connecting portions 31, and a first adjusting member and a second adjusting member are disposed between the fastening portion 5 and the first end portion 3, and are respectively used for correspondingly mounting the two frame rims and the two connecting portions 31.

The first and second adjustment members are identical in structure and each include a clip 61A and a latch 62A. The first end portion 3 is fixed to one end of the enclosing plate 11, and the two connecting portions 31 of the first end portion 3 correspond to the side edge portions of the enclosing plate 11 and extend toward the frame edge, respectively. The connecting portion 31 and the frame are vertically overlapped, and the connecting portion 31 and the frame are fixed inside the yoke 61A by the latch 62A. It can be understood that when the latch 62A rotates, the connecting portion 31 and the frame edge move relatively, so that the length of the frame edge can be adjusted, and the tightness of the frame edge can be adjusted when the noise damping layer 2 is fixed.

As shown in fig. 17 to 25, according to another embodiment of the present invention, the adjusting member 6 includes a stopper provided with one of the first end portion 3 or the second end portion 4 and the fastening portion 5 and a stopper groove provided with the other of the first end portion 3 or the second end portion 4 and the fastening portion 5.

Thus, when the fastening part 5 needs to be detached, the clamping piece only needs to be separated from the clamping groove; when the fastening portion 5 needs to be remounted, it is only necessary to cause the locking piece to be locked into the locking groove. The clamping structure can facilitate the installation and the disassembly of the fastening part 5, and has simple structure and high reliability.

In one embodiment of the present invention, the fastening portion 5 is clamped with the first end portion 3 through the adjusting component 6, and the fastening portion 5 is fixedly connected with the second end portion 4 or integrally formed; or the fastening part 5 and the second end part 4 are clamped through the adjusting part 6, and the fastening part 5 and the first end part 3 are fixedly connected or integrally formed; alternatively, the fastening portion 5 is engaged with both the first end portion 3 and the second end portion 4 via the adjusting member 6.

As shown in fig. 22, in one embodiment of the present invention, the locking grooves include a first locking groove 63B and a second locking groove 64B provided at both ends of the fastening portion 5, respectively, and the locking pieces include a first locking piece 61B provided at the first end portion 3 and a second locking piece 62B provided at the second end portion 4. For example, the fastening portion 5 includes two rims, two ends of each rim are respectively provided with a first locking groove 63B and a second locking groove 64B, a first locking piece 61B is provided in a region of the first end portion 3 corresponding to the rim, a second locking piece 62B is provided in a region of the second end portion 4 corresponding to the rim, and when the first locking groove 63B is engaged with the first locking piece 61B and the second locking groove 64B is engaged with the second locking piece 62B, the fastening portion 5 is fixed to the outside of the apron 11.

As shown in fig. 23, in one embodiment of the present invention, the first engaging member 61B is a flange, the flange is divided into an upper section and a lower section, the upper section and the lower section of the flange have different widths, and the upper section has a width greater than that of the lower section. As shown in fig. 24, the first locking groove 63B is also divided into an upper groove and a lower groove, the width of the upper groove is smaller than that of the lower groove, when the turned edge and the first locking groove 63B are ready to be locked, the upper section of the turned edge firstly passes through the lower groove, and finally, under the action of the deformation force of the silencing layer 2, the lower section of the turned edge is locked in the upper groove with a smaller width, and the width of the upper section is larger than that of the upper groove, so that the turned edge is firmly fixed in the first locking groove 63B.

As shown in fig. 24 and 25, in one embodiment of the present invention, the second locking piece 62B is a hook, and the hook is engaged in the second locking groove 64B to fix the frame.

According to one embodiment of the present invention, the number of the locking grooves is plural, and the plural locking grooves are arranged along the longitudinal direction of the fastening portion 5. Like this, can through in the card joint piece card is to different card grooves to realize the regulation of fastening portion 5 length, be convenient for the installation and the change of noise damping layer 2.

As shown in fig. 26 and 27, according to an embodiment of the present invention, the adjusting member 6 is a pinching member, the pinching member includes an elastic piece 61C and a plurality of adjusting holes 62C, one of the first end portion 3 or the second end portion 4 and the fastening portion 5 is provided with the elastic piece 61C, and the other of the first end portion 3 or the second end portion 4 and the fastening portion 5 is provided with the plurality of adjusting holes 62C. In this embodiment, the elastic sheet 61C can be fitted in different adjusting holes 62C to adjust the tightness of the fastening portion 5, so that the fastening portion 5 compresses or relaxes the sound-absorbing layer 2, and the adjustment is convenient, the structure is simple, and the reliability is high.

As shown in fig. 26 and 27, in one embodiment of the present invention, a plurality of adjustment holes 62C are arranged and spaced apart along the length direction of the fastening portion 5. For example, the fastening portion 5 includes two frame edges, one end of each frame edge is provided with a plurality of adjusting holes 62C, correspondingly, the first end portion 3 is provided with two elastic pieces 61C, and the two elastic pieces 61C are respectively clamped into the corresponding adjusting holes 62C.

As shown in fig. 11, according to an embodiment of the present invention, the fastening portion 5 includes a first frame border 51 and a second frame border 52. The first frame edge 51 is used for pressing the edge of one side of the sound-deadening layer 2 against the surrounding plate 11, and the second frame edge 52 is used for pressing the edge of the other side of the sound-deadening layer 2 against the surrounding plate 11.

As shown in fig. 11, in one embodiment of the present invention, the fixing member is a hollow frame, the first frame 51 and the second frame 52 fix the side portions of the sound-deadening layer 2, and the first end portion 3 and the second end portion 4 fix the end portions of the sound-deadening layer 2.

As shown in fig. 1 to 27, the volute assembly according to the embodiment of the second aspect of the present invention includes the noise reduction assembly for the volute according to the embodiment of the first aspect of the present invention, and further includes a volute body 1.

The volute body 1 is provided with a surrounding plate 11, the surrounding plate 11 is provided with a plurality of through holes 112, and a noise reduction assembly for the volute is fixed on the outer side of the surrounding plate 11 and covers the through holes 112.

The effect of the volute assembly according to the present invention is similar to that of the noise reduction assembly according to the first aspect of the present invention, and the present invention is not described herein again.

As shown in fig. 1 to 27, a range hood according to an embodiment of a third aspect of the present invention includes the volute assembly of the second aspect.

The effect of the range hood according to the present invention is similar to that of the noise reduction assembly according to the first aspect of the present invention, and the present invention is not described herein again.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

The above embodiments are merely illustrative of the present invention and are not to be construed as limiting the utility model. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and the technical solution of the present invention is covered by the claims of the present invention.

Claims (12)

1. A noise reduction assembly for a volute, comprising:

the silencing layer is suitable for being attached to a coaming of the volute and covers the through hole of the coaming;

a fixing member stacked on the sound-deadening layer;

the fixing part is suitable for pressing at least the edge part of the sound attenuation layer, and a plurality of flexible first bulges are arranged on the edge of the first side, facing away from the fixing part, of the sound attenuation layer.

2. The noise reduction assembly for a volute of claim 1, wherein the sound reduction layer is sound absorbing cotton.

3. The noise reduction assembly for a volute according to claim 1, wherein the first plurality of projections are spaced apart and aligned along a length of the edge of the first side.

4. The noise reduction assembly for a volute according to claim 3, wherein a spacing between two adjacent first projections is L1, and a width of the first projections along a length of the rim is L2, wherein L1 < L2.

5. The noise reduction assembly for a volute according to claim 1, wherein an edge of the sound reduction layer facing the second side of the stationary component is provided with a plurality of flexible second protrusions, and the plurality of second protrusions are arranged and spaced apart along a length of the edge of the second side.

6. The noise reduction assembly for a volute according to claim 5, wherein a spacing between two adjacent second projections is L3, and a width of the second projections along a length of the rim is L4, wherein L3 < L4.

7. The noise reduction assembly for a volute of claim 5, wherein the first projection and the second projection are offset one from the other.

8. The noise reduction assembly for a volute according to any of claims 1 to 7, wherein the fixing component includes a first end portion, a second end portion, and a fastening portion, the first end portion and the second end portion adapted to fix an end portion of the sound-damping layer, the fastening portion being removably connected to at least one of the first end portion and the second end portion, the fastening portion adapted to compress at least a side edge portion of the sound-damping layer.

9. The noise reduction assembly for a volute according to any of claims 1 to 7, wherein the first and second projections are rectangular or prismoid in shape.

10. The noise reduction assembly for a volute according to any of claims 1 to 7, wherein the first protrusions and/or the second protrusions are integrally formed with the sound damping layer by hot press molding.

11. A volute assembly, comprising:

a noise reduction assembly for a volute as defined in any one of claims 1 to 10;

the volute body is provided with a surrounding plate, the surrounding plate is provided with a plurality of through holes, and the noise reduction assembly for the volute is fixed on the outer side of the surrounding plate and covers the through holes.

12. A range hood, comprising the volute assembly of claim 11.

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