CN220453762U

CN220453762U - Bellows structure and lampblack absorber

Info

Publication number: CN220453762U
Application number: CN202321998121.0U
Authority: CN
Inventors: 任富佳; 李智宝; 于巍巍; 姚家前; 董豪炳; 吴童; 郑强
Original assignee: Hangzhou Robam Appliances Co Ltd
Current assignee: Hangzhou Robam Appliances Co Ltd
Priority date: 2023-07-27
Filing date: 2023-07-27
Publication date: 2024-02-06
Anticipated expiration: 2033-07-27

Abstract

The utility model belongs to the technical field of kitchen electricity, and discloses a bellows structure and a range hood. The bellows structure includes box and fan, and the bottom plate of box is provided with the interface, is provided with the layer of making an uproar that falls on the inner wall of box, falls the layer of making an uproar and can reflect the absorption to the noise. The fan is arranged in the box body, and noise generated by the operation of the fan is discharged from the interface after being reduced by the noise reduction layer. This bellows structure through set up the layer of making an uproar that falls on the inner wall of box, the noise that the fan during operation produced transmits in the box, and noise energy will strike the layer of making an uproar that falls, is fallen the layer of making an uproar and constantly reflects absorption and loss to reduce the noise of following the interface downward transmission, be favorable to the reduction of noise.

Description

Bellows structure and lampblack absorber

Technical Field

The utility model relates to the technical field of kitchen electricity, in particular to a bellows structure and a range hood.

Background

The kitchen ventilator is a kitchen appliance which can quickly pump away and discharge the oil smoke harmful to human bodies generated in the waste and cooking process of the kitchen stove, the key structure of the kitchen ventilator for pumping away the oil smoke is a bellows structure, the bellows structure comprises a box body and a fan, the fan is arranged in the box body, an air duct is formed in the box body, and the fan rotates to provide power for sucking the oil smoke into the air duct.

When the fan starts to work, the fan generates great noise in the box body, and the noise is transmitted downwards along the connecting pipe, so that the noise in the operating space of the cooking bench is large, and the user experience is influenced.

Therefore, a bellows structure and a range hood are needed to solve the above problems.

Disclosure of Invention

The utility model aims to provide a bellows structure and a range hood, which can reduce noise generated in the working process of a fan.

To achieve the purpose, the utility model adopts the following technical scheme:

a bellows structure comprising:

the box body, the bottom plate of the box body is provided with the interface, the inner wall of the box body is provided with the noise reduction layer, and the noise reduction layer can reflect and absorb noise;

the fan is arranged in the box body, and noise generated by the operation of the fan is discharged from the interface after being reduced by the noise reduction layer.

Alternatively, the noise reduction layer includes:

the top noise reduction layer is arranged on the top plate of the box body; and/or the number of the groups of groups,

the bottom noise reduction layer is arranged on the bottom plate of the box body.

Alternatively, the thickness of the top noise reduction layer and/or the bottom noise reduction layer is set to 10mm-20mm.

As an alternative, the interface and the blower are arranged along the left-right direction, and the blower is arranged on the bottom plate.

Alternatively, the noise reduction layer further includes:

the air flow entering the box body from the interface is guided by the air flow noise reduction layer and then flows to the fan.

Alternatively, the surface of the diversion noise reduction layer is arranged into an arc shape and is smoothly connected with the top noise reduction layer.

Alternatively, the noise reduction layer includes:

the sound absorbing layer is connected to the inner wall of box, and the perforated plate sets up in deviating from box one side of sound absorbing layer, and perforated plate and sound absorbing layer pass through the fastener to be connected in the box, and the perforated plate is provided with a plurality of amortization holes.

Alternatively, the sound absorbing layer is made of sound absorbing cotton.

Alternatively, the diameter of the sound deadening holes is 0.5mm to 1mm.

The range hood comprises a smoke collecting system and a connecting pipe, wherein one end of the connecting pipe is communicated with the smoke collecting system.

The beneficial effects are that:

according to the bellows structure provided by the utility model, the noise reduction layer is arranged on the inner wall of the box body, noise generated during the operation of the fan is transmitted in the box body, noise energy is impacted on the noise reduction layer and is continuously reflected and absorbed by the noise reduction layer to be lost, so that noise transmitted downwards from the interface is reduced, and the reduction of the noise is facilitated.

Drawings

Fig. 1 is a schematic structural diagram of a range hood according to an embodiment of the present utility model;

fig. 2 is a schematic diagram of a partial cross-sectional structure of a range hood according to an embodiment of the present utility model;

fig. 3 is a schematic view of a partially disassembled structure of a range hood according to an embodiment of the present utility model;

fig. 4 is a schematic diagram of a disassembled structure of a noise reduction layer according to an embodiment of the present utility model.

In the figure:

1. a bellows structure; 11. a case; 101. a bottom plate; 102. a top plate; 103. a side plate; 111. an interface; 112. an air inlet space; 12. a blower; 121. an air inlet; 13. a noise reduction layer; 131. a top noise reduction layer; 1311. a sound absorbing layer; 1312. a perforated plate; 13121. a sound deadening hole; 1313. a connection hole; 132. a bottom noise reduction layer; 133. a diversion noise reduction layer; 14. an air outlet cover; 15. a fastener;

2. a smoke collecting system;

3. and (5) connecting pipes.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The range hood comprises a smoke collecting system, a connecting pipe and a bellows structure, the bellows structure comprises a box body and a fan, the fan is arranged in the box body, and the fan rotates to provide power for absorbing the smoke, so that the smoke is filtered by the smoke collecting system, enters the connecting pipe and the box body, and is discharged outdoors through an air outlet of the fan. The existing range hood lacks the structure of making an uproar that falls in the box, and the fan starts the during operation, produces very big noise in the box, and the noise is transmitted downwards along the connecting pipe, causes the top of a kitchen range operation space in the noise great, influences user experience to feel.

To solve the above problems, as shown in fig. 1 to 3, the present embodiment provides a bellows structure 1 and a range hood including the bellows structure 1. The bellows structure 1 includes box 11 and fan 12, and the bottom plate 101 of box 11 is provided with interface 111, is provided with noise reduction layer 13 on the inner wall of box 11, and noise reduction layer 13 can reflect the absorption to the noise. The fan 12 is disposed in the box 11, and noise generated by operation of the fan 12 is reduced by the noise reduction layer 13 and then discharged from the interface 111. The range hood further comprises a smoke collecting system 2 and a connecting pipe 3, one end of the connecting pipe 3 is connected to the smoke collecting system 2, and the other end of the connecting pipe 3 is communicated with the connector 111.

Noise generated during operation of the fan 12 is transmitted in the box 11 by arranging the noise reduction layer 13 on the inner wall of the box 11, noise energy is impacted on the noise reduction layer 13 and is continuously reflected and absorbed by the noise reduction layer 13 to be lost, so that noise transmitted downwards from the interface 111 is reduced, and noise reduction is facilitated.

Optionally, as shown in fig. 2 and 3, an air outlet cover 14 is disposed on the outer side of the box 11, the fan 12 is communicated with the air outlet cover 14, the interface 111 and the fan 12 are arranged along the left-right direction, in this embodiment, the air outlet cover 14 and the fan 12 are disposed on the right side of the connecting pipe 3, and in other embodiments, the air outlet cover 14 and the fan 12 may also be disposed on the left side of the connecting pipe 3. The flue gas entering the box 11 from the interface 111 turns and then enters the fan 12, and noise generated by the fan 12 is transmitted to a user through the interface 111, the connecting pipe 3 and the smoke collecting system 2 after turning, so that the influence of the noise generated by the fan 12 during working on the user is reduced. Meanwhile, as the interfaces 111 and the fans 12 are staggered, the distance between the fans 12 and the interfaces 111 is increased, the number of times that noise energy generated by the fans 12 is reflected by the noise reduction layer 13 is increased, so that the noise energy is more consumed, the noise energy reaching the interfaces 111 is further reduced, and the noise reduction effect is further improved.

In addition, as shown in fig. 1 and 2, the box 11 is connected with the smoke collecting system 2 through the connecting pipe 3, so that the fan 12 is far away from the smoke collecting system 2 and the stove under the smoke collecting system 2, and the fan 12 is staggered with the connecting pipe 3, so that the distance between the fan 12 and the smoke collecting system 2 and between the fan 12 and the stove is further increased, the oil smoke adsorbed on the impeller and the volute of the fan 12 is reduced, grease is not easy to accumulate on the fan 12, the reliability of the fan 12 in operation is ensured, and the service life of the fan 12 is prolonged.

As shown in fig. 2, the fan 12 is disposed on the bottom plate 101 of the box 11, the air inlet 121 of the fan 12 faces the top plate 102 of the box 11, and the air flow entering the box 11 through the interface 111 is guided by the top plate 102 of the box 11 and then enters the air inlet 121 of the fan 12, so that the air flow is smoother, and the air flow loss is smaller.

As shown in fig. 2, the air inlet 121 of the fan 12 is disposed in a gap with the top plate 102 of the box 11, so as to form an air inlet space 112 on the upper side of the fan 12, thereby ensuring that the air flow entering the box 11 from the connection pipe 3 can more smoothly enter the fan 12.

Further, as shown in fig. 2 and 3, the noise reduction layer 13 includes a top noise reduction layer 131 and/or a bottom noise reduction layer 132, the top noise reduction layer 131 is disposed on the top plate 102 of the box 11, and the bottom noise reduction layer 132 is disposed on the bottom plate 101 of the box 11. The thickness of the top noise reduction layer 131 and/or the bottom noise reduction layer 132 may be set to 10mm-20mm. Noise generated by the fan 12 radiates from the air inlet 121 of the fan 12, most of noise energy is continuously reflected, absorbed and lost in the space between the top noise reduction layer 131 and the bottom noise reduction layer 132, and only a small part of noise energy is downwards transmitted through the connecting pipe 3, so that noise reduction is facilitated.

As shown in fig. 2 and 3, the noise reduction layer 13 further includes a diversion noise reduction layer 133, where the diversion noise reduction layer 133 is disposed at a connection position between the top plate 102 and the side plate 103 of the box 11 and is located at a side of the interface 111 far away from the fan 12, and airflow entering the box 11 from the interface 111 is guided by the diversion noise reduction layer 133 and flows to the fan 12, so that flow loss of the airflow is reduced.

Preferably, the surface of the diversion noise reduction layer 133 is provided in a circular arc shape, and is smoothly connected with the top noise reduction layer 131. The flow guiding noise reduction layer 133 and the top noise reduction layer 131 form a smooth surface, which is beneficial to reducing resistance of air flow, so that the air flow smoothly flows from the interface 111 to the air inlet 121 of the fan 12. The diversion noise reduction layer 133 and the top noise reduction layer 131 can be arranged into an integrated structure, so that the processing is convenient, and the connection is firmer.

Specifically, as shown in fig. 2-4, the top noise reduction layer 131, the bottom noise reduction layer 132, and the diversion noise reduction layer 133 have the same structure, and each include a sound absorption layer 1311 and a perforated plate 1312, where the sound absorption layer 1311 is connected to the inner wall of the box 11, the perforated plate 1312 is disposed on one side of the sound absorption layer 1311 away from the box 11, and the shape of the perforated plate 1312 is matched with the shape of the surface of the sound absorption layer 1311, so that the perforated plate 1312 can be attached to the surface of the sound absorption layer 1311. The perforated plate 1312 and the sound-absorbing layer 1311 are connected to the case 11 by fasteners 15, and the perforated plate 1312 is provided with a plurality of sound-deadening holes 13121. By providing the perforated plate 1312, the noise reduction layer 13 is fixed. The fasteners 15 may be bolts or screws. Specifically, the sound absorbing layer 1311, the perforated plate 1312, and the case 11 are provided with connection holes 1313 facing each other, and the fasteners 15 pass through the connection holes 1313 to fix the noise reducing layer 13 to the inner wall of the case 11.

Specifically, before the noise reduction layer 13 is mounted on the inner wall of the box 11, the sound absorption layer 1311 is adhered to the perforated plate 1312 by means of gluing, and then the perforated plate 1312 and the sound absorption layer 1311 are integrally fixed in the box 11 by means of the fastener 15.

Alternatively, the sound absorbing layer 1311 is made of a sound absorbing cotton material. The diameter of the sound deadening hole 13121 may be set to 0.5mm to 1mm.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. A bellows structure, comprising:

the box body (11), the bottom plate (101) of the box body (11) is provided with an interface (111), the inner wall of the box body (11) is provided with a noise reduction layer (13), and the noise reduction layer (13) can reflect and absorb noise;

the fan (12) is arranged in the box body (11), and noise generated by operation of the fan (12) is discharged from the interface (111) after being reduced by the noise reduction layer (13).

2. A bellows structure according to claim 1, wherein the noise reducing layer (13) comprises:

a top noise reduction layer (131), wherein the top noise reduction layer (131) is arranged on a top plate (102) of the box body (11); and/or the number of the groups of groups,

the bottom noise reduction layer (132), the bottom noise reduction layer (132) set up in bottom plate (101) of box (11).

3. The bellows structure according to claim 2, characterized in that the thickness of the top noise reduction layer (131) and/or the bottom noise reduction layer (132) is set to 10mm-20mm.

4. The bellows structure according to claim 2, wherein the interface (111) and the fan (12) are arranged in a left-right direction, the fan (12) being provided on the bottom plate (101).

5. A bellows structure according to claim 4, wherein the noise reducing layer (13) further comprises:

the flow guiding noise reduction layer (133) is arranged at the joint of the top plate (102) and the side plate (103) of the box body (11), the flow guiding noise reduction layer (133) is positioned at one side, far away from the fan (12), of the interface (111), and air flow entering the box body (11) from the interface (111) flows to the fan (12) after being guided by the flow guiding noise reduction layer (133).

6. The bellows structure according to claim 5, wherein the surface of the diversion noise reduction layer (133) is provided as an arc shape, which is smoothly connected with the top noise reduction layer (131).

7. A bellows structure according to any one of claims 1-6, wherein the noise reducing layer (13) comprises:

sound-absorbing layer (1311) and perforated plate (1312), sound-absorbing layer (1311) connect in the inner wall of box (11), perforated plate (1312) set up in sound-absorbing layer (1311) deviate from box (11) one side, perforated plate (1312) with sound-absorbing layer (1311) connect in box (11) through fastener (15), perforated plate (1312) are provided with a plurality of amortization hole (13121).

8. The bellows structure of claim 7, wherein the sound-absorbing layer (1311) is made of a sound-absorbing cotton material.

9. The bellows structure according to claim 7, wherein the diameter of the sound deadening hole (13121) is 0.5mm to 1mm.

10. A range hood comprising a smoke collecting system (2) and a connecting pipe (3), wherein one end of the connecting pipe (3) is communicated with the smoke collecting system (2), and the range hood further comprises a bellows structure according to any one of claims 1-9, and the other end of the connecting pipe (3) is connected with the interface (111).