CN219613760U

CN219613760U - Air duct assembly and dust collector

Info

Publication number: CN219613760U
Application number: CN202320567264.XU
Authority: CN
Inventors: 周飞; 陈维; 胡志勇
Original assignee: Shenzhen Baseus Technology Co Ltd
Current assignee: Shenzhen Baseus Technology Co Ltd
Priority date: 2023-03-16
Filing date: 2023-03-16
Publication date: 2023-09-01
Anticipated expiration: 2033-03-16

Abstract

The utility model relates to an air duct assembly and a dust collector. The wind channel subassembly includes: the inner wall of the air duct shell is used for defining an air outlet air duct; the baffles are positioned in the air outlet air duct, are arranged at intervals along the extending direction of the air outlet air duct and define interval areas, and each interval area is communicated and forms a bent airflow flow channel. The air outlet duct is internally provided with the plurality of baffles which are arranged at intervals, so that a bent airflow flow channel can be formed, when sound waves are transmitted along with airflow, the sound waves rebound among the plurality of baffles and cancel each other, and noise is reduced.

Description

Air duct assembly and dust collector

Technical Field

The utility model relates to the technical field of cleaning equipment, in particular to an air duct assembly and a dust collector.

Background

With the continuous improvement of living standard, the dust collector has gradually become a daily cleaning tool. The dust collector mainly sucks the gas containing dust, impurities and the like into the filter cup for filtering treatment, and then discharges the filtered gas to the outside, thereby realizing the cleaning effect.

The air duct component of the existing dust collector can generate larger noise when exhausting air, and the use experience of a user is affected.

Disclosure of Invention

In view of the foregoing, embodiments of the present disclosure provide an air duct assembly and a vacuum cleaner.

According to a first aspect of embodiments of the present disclosure, there is provided a duct assembly for a vacuum cleaner, the duct assembly comprising:

the inner wall of the air duct shell is used for defining an air outlet air duct;

the baffles are positioned in the air outlet air duct, are arranged at intervals along the extending direction of the air outlet air duct and define interval areas, and each interval area is communicated and forms a bent airflow flow channel.

In some embodiments, one end of each baffle is connected with the inner wall of the air duct shell, and the other end of each baffle is arranged in a suspending manner.

In some embodiments, each of the baffles is arranged in parallel.

In some embodiments, the air outlet duct is circular, the baffle is semicircular, and extends along a portion of the inner wall of the duct housing in a direction away from the inner wall within the air outlet duct;

along the extending direction of the air outlet duct, the extending directions of the two adjacent baffles are opposite.

In some embodiments, the ratio between the extended length of the baffle and the inner diameter of the outlet air duct is between 0.6 and 0.9.

In some embodiments, a sound attenuation layer is adhered to the inner wall of each of the spaced areas defined by the plurality of baffles.

In some embodiments, along the extending direction of the air outlet duct, a ratio between a total length of the interval area defined by the plurality of baffles and an extending length of the air outlet duct is between 0.3 and 0.6.

In some embodiments, a plurality of the baffles are formed as a unitary structure with the air chute housing.

According to a second aspect of embodiments of the present disclosure, there is provided a vacuum cleaner comprising:

the air duct assembly of any of the above embodiments; and

and an air outlet of the fan assembly is communicated with the air outlet air duct.

In some embodiments, a separation distance between the baffle nearest the fan assembly and the fan assembly is greater than a radius of an air outlet of the fan assembly.

The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects:

a plurality of baffles are arranged in the air outlet duct, are arranged at intervals along the extending direction of the air outlet duct and define interval areas, and each interval area is communicated with and forms a bent airflow flow channel. Therefore, sound waves rebound back and forth among a plurality of baffles along with the air flow in the process of spreading in the air outlet air duct, so that the spreading direction is changed, the sound waves after changing the direction can be mutually offset with the sound waves continuously transmitted, the noise can be reduced, and the use experience of a user is improved. In addition, the air duct assembly of the embodiment of the disclosure has simple structure and lower production cost, and the whole volume of the dust collector is not influenced too much.

Drawings

FIG. 1 is a schematic view of a vacuum cleaner according to an exemplary embodiment;

figure 2 is a schematic cross-sectional view of the cleaner shown in figure 1;

fig. 3 is a partial enlarged view of a cross-sectional view of the cleaner shown in fig. 2.

Description of the reference numerals

1-an air duct assembly; 11-an air duct housing; 12-an air outlet duct; 121-an air outlet; 13-a baffle; 2-a fan assembly; 100-dust collector.

Detailed Description

The following describes specific embodiments of the present utility model in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the utility model.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. Unless defined otherwise, technical or scientific terms used in this disclosure should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. Also, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one, and the terms "a" and "an" are used individually. "plurality" or "plurality" means two or more. Unless otherwise indicated, the terms "front," "rear," "lower," and/or "upper" and the like are merely for convenience of description and are not limited to one location or one spatial orientation. The word "comprising" or "comprises", and the like, means that elements or items appearing before "comprising" or "comprising" are encompassed by the element or item recited after "comprising" or "comprising" and equivalents thereof, and that other elements or items are not excluded. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

The dust collector sucks in the foreign matters mixed with the air, such as dust, hair and the like by using the suction force generated by the rotation of the fan assembly, and the air containing the foreign matters is filtered in the filter cup and then is discharged to the outside of the dust collector through the air outlet of the air outlet duct. Thus, the effects of removing dust and cleaning the ground can be achieved.

When the dust collector is in a working state, the motor of the fan assembly can drive the blades to rotate at a high speed, so that sound waves can be transmitted through airflow, and noise is generated. Generally, the faster the rotation speed of the motor is, the larger the noise is, which seriously affects the use experience of the user. The existing dust collector is generally provided with the sound insulation cover outside the fan assembly, but the structure inside the dust collector is complex, so that the assembly difficulty and the production cost are increased, the size of the dust collector is increased, and in addition, the noise reduction effect is not ideal.

Therefore, the embodiment of the disclosure takes the handheld dust collector as an example, improves the air duct component of the dust collector, and the improved air duct component can effectively reduce the noise generated in the use process of the dust collector, improves the use experience of a user, and has the advantages of simple structure and lower production cost.

As shown in fig. 1 and 2, the disclosed embodiments provide a duct assembly 1 for a vacuum cleaner, the duct assembly 1 including a duct housing 11. The air duct housing 11 is an outer housing of the air duct assembly 1, an air outlet air duct 12 through which air flows is defined by the inner wall of the air duct housing 11, an opening is formed at one end of the air duct housing 11, and the opening is communicated with the air outlet air duct 12 to form an air outlet 121 of the air outlet air duct 12. The air flow sucked by the fan assembly flows through the air outlet duct 12 and is discharged through the air outlet 121. A filter may be additionally provided at the air outlet 121 to further filter the air discharged into the air.

In the disclosed embodiment, the duct housing 11 is generally cylindrical in shape, which is simple in structure, easy to machine, and convenient for a user to hold in use. In some other embodiments, the duct housing 11 may also have any other suitable shape, such as a rectangular parallelepiped shape, a polyhedral shape, or an elliptical cylinder shape.

As shown in fig. 1 and 2, in the embodiment of the present disclosure, the outer wall of the duct housing 11 serves as an exterior surface of the cleaner. The term "exterior surface" refers to the outermost surface of the cleaner, i.e., the outer surface that can be directly touched by a user when using the cleaner. Therefore, no additional shell parts are required to be added outside the air duct shell 11, the number of parts is reduced, the assembly difficulty and the production cost are reduced, the size of the dust collector is effectively reduced, and the dust collector is convenient for users to use and carry.

As shown in fig. 2 and 3, the duct assembly 1 further includes a plurality of baffles 13, the plurality of baffles 13 being located within the outlet duct 12, being spaced apart along the extension direction of the outlet duct 12 and defining spaced apart regions, each of which communicates with each other and forms a bent airflow passage.

The curve in fig. 3 illustrates, by way of example, the flow path of the air flow in the outlet duct 12 provided with a plurality of baffles 13. Because the baffle 13 is disposed in the air outlet duct 12, the air flow is blocked by the baffle 13 when flowing through the air outlet duct 12, so that the air flow cannot directly flow to the air outlet 121, but needs to bypass the baffle 13 and flow to the air outlet 121 after flowing through the interval area defined by the baffle 13, and a bent air flow channel is formed. The bent airflow flowing channel formed by the communication of the plurality of interval areas can prolong the flowing distance of the airflow, and the propagation distance of sound waves propagated through the airflow can be correspondingly prolonged, so that the energy of a part of sound waves can be consumed, and the noise reduction effect is realized.

In addition, the propagation range of the sound wave in the transmission process is mainly determined by the transmission distance of the longitudinal wave. Because the air outlet duct 12 of the embodiment of the present disclosure is provided with the bent airflow channel defined by the plurality of baffles 13, the sound waves are blocked by the baffles 13 and rebound on the baffles 13 in the process of advancing along with the airflow, so that the propagation direction of the sound waves is changed, and the sound waves after changing the direction and the sound waves continuously transmitted are at least partially offset. Therefore, after the baffle plates rebound repeatedly, the energy of sound waves can be effectively reduced, and the noise is further reduced. The arrows in fig. 3 exemplarily show the bounce of the sound wave occurring during the forward travel.

According to the embodiment of the disclosure, the plurality of baffles 13 are arranged in the air outlet duct 12 of the air duct assembly 1 at intervals to form a noise reduction mode of the bent airflow flow channel, so that the effect of reducing noise can be effectively achieved in a physical shielding mode. In addition, the air duct assembly 1 is simple in structure and low in production cost, the whole size of the dust collector is not influenced too much, and the use experience of a user is improved.

As shown in fig. 2 and 3, one end of each baffle 13 is connected to the inner wall of the duct housing 11, and the other end is arranged in a suspended manner, so that a passage for flowing an air stream can be formed between the baffle 13 with one end arranged in a suspended manner and the inner wall of the duct housing 11.

Illustratively, the baffle 13 may be formed as a unitary structure with the air chute housing 11.

Also illustratively, the baffle 13 may be fixedly attached to the inner wall of the duct housing 11 by any other suitable fastening means, such as adhesive.

In the embodiment of the present disclosure, the baffles 13 are arranged parallel to each other, so that the rebound of the sound wave between the baffles 13 can be ensured to be more uniform, and meanwhile, the parallel baffles 13 are easier to produce and process, so that the production cost can be reduced.

In the embodiment of the present disclosure, in a projection plane perpendicular to the extending direction of the air outlet duct 12, the air outlet duct 12 is substantially circular, and the baffle 13 is substantially semicircular. In some other embodiments, the projection plane of the air outlet duct 12 may be rectangular, for example, and the baffle 13 in the air outlet duct 12 is also substantially rectangular. The embodiment of the present disclosure does not specifically limit the shapes of the outlet air duct 12 and the baffle 13.

The baffle 13 extends in the air outlet duct 12 along a part of the inner wall of the duct housing 11 in a direction away from the inner wall. As shown in fig. 2 and 3, the extending directions of the adjacent two baffles 13 are opposite, and thus, a bent airflow passage can be formed.

As shown in fig. 3, the ratio between the extension length a of the baffle 13 and the inner diameter r of the air outlet duct 12 is between 0.6 and 0.9. In general, when the above ratio relationship can be satisfied, the space defined by the baffle 13 may not only function to block and rebound sound waves, but also leave a gap with the inner wall of the duct housing 11, so that the circulation of air flow is not affected.

Illustratively, the ratio between the extension length a of the baffle 13 and the inner diameter r of the outlet duct 12 may be 0.6, 0.7, 0.8, or 0.9, etc.

Here, the extension length of the baffle 13 refers to a dimension along the radial direction of the baffle 13 and perpendicular to the chord length direction.

In the embodiment of the present disclosure, the extension length of each baffle 13 is the same. In some other embodiments, the extension length of each baffle 13 may be different, so long as it can block and rebound sound waves without affecting the circulation of air.

As shown in fig. 2 and 3, adjacent two baffles 13 are partially overlapped along the extending direction of the baffles 13, so that each baffle 13 is in a bent shape after being communicated with a spacing area defined between the inner walls of the duct housing 11. In an embodiment of the present disclosure, the size of the overlap region is between 5mm and 20mm, preferably between 10mm and 15 mm. Thus, the baffle 13 can ensure the blocking and rebounding effects of sound waves and smooth circulation of air flow.

By way of example, the overlapping area of two adjacent baffles may have a size of 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, etc.

The cross-sectional area of the interval area defined by the two adjacent baffles 13 needs to be larger than the area of the air inlet of the dust collector, so that better noise reduction effect can be realized under the condition of ensuring airflow circulation, and corresponding setting can be performed according to the actual size of the air outlet duct of the product. In the embodiment of the present disclosure, the distance between two adjacent baffles 13 is between 5mm and 10mm along the extending direction of the air outlet duct 12.

Illustratively, the spacing distance between two adjacent baffles 13 may be 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, or the like.

In the embodiment of the present disclosure, the separation distance between each adjacent two baffles 13 is the same. In some other embodiments, the separation distance between each adjacent two baffles 13 may also be different.

In the embodiment of the present disclosure, a noise reduction layer (not shown in the drawing) is further adhered to the inner wall of each of the spaced areas defined by the plurality of baffles 13, so that the noise reduction effect of the air outlet duct can be further improved.

Illustratively, the sound dampening layer may be made of a flexible material (e.g., foam) or a membranous material (e.g., plastic film, canvas, or artificial leather, etc.).

Also by way of example, the sound dampening layer may be made of a plate-like material (e.g., hard fiberboard or plywood, etc.).

In an embodiment of the present disclosure, the noise damping layer is noise damping cotton. The noise damping cotton may be made of, for example, foamed melamine, foamed PU (Polyurethane), foamed PE (Polyethylene), or foamed TPE (Thermoplastic Elastomer ).

For example, the soundproof cotton may be adhered to the inner wall of each of the spaced regions by an adhesive material such as an epoxy adhesive or a double-sided tape.

Because the surface and the inside of amortization cotton all have many tiny pore, the sound wave can rub with the pore when entering into the inside of amortization cotton along the pore, will sound energy conversion to heat energy, consequently, can effectual absorption sound wave, make the sound wave decay to the noise reduction.

In addition, the silencing cotton has compact structure, stable shape, long service life and good heat insulation performance.

Of course, those skilled in the art will appreciate that in some other embodiments, any other suitable sound attenuating layer may alternatively be adhered to the inner walls of the respective spaced apart regions.

Along the extending direction of the air outlet duct 12, the ratio between the total length of the interval area defined by the baffles 13 and the extending length of the air outlet duct 12 is between 0.3 and 0.6.

The overall length of the interval area is too long, which may affect the flow of the air flow, and may cause the flow path of the air flow to be too long, thereby affecting the working efficiency of the cleaner. While the total length of the spacing regions is too short, the noise reduction effect may be less than ideal. Therefore, generally, when the ratio between the total length of the interval area and the extension length of the air outlet duct is between the above ratios, a good noise reduction effect can be achieved, and the flow of the air flow is not excessively affected.

Illustratively, the ratio between the total length of the spaced area defined by the plurality of baffles 13 and the extended length of the outlet air duct 12 may be 0.3, 0.4, 0.5, or 0.6, etc.

In the embodiment of the present disclosure, 5 baffles 13 are disposed in the air outlet duct 12. In some other embodiments, more or fewer baffles 13 may be disposed in the air outlet duct 12, and specific settings may be performed according to the actual size of the air outlet duct, and the number of the baffles is not specifically limited in the embodiments of the present disclosure.

In the embodiment of the present disclosure, the plurality of baffles 13 are formed as a unitary structure with the duct housing 11. Therefore, the number of parts can be reduced, the assembly difficulty is reduced, and the production cost is saved. Of course, in some other embodiments, the plurality of baffles 13 and the duct housing 11 may be assembled in a split structure.

As shown in fig. 1, the disclosed embodiment also provides a vacuum cleaner 100. The vacuum cleaner 100 comprises an air duct assembly 1 and a blower assembly 2 according to any of the above embodiments, the air outlet of the blower assembly 2 being in communication with an air outlet duct 12.

The fan assembly 2 comprises a fan and a driving assembly, wherein the driving assembly is connected with the fan and used for driving the fan to rotate. When the dust collector works, the fan in the fan assembly rotates to generate negative pressure, so that gas containing dust, impurities and the like is sucked into the dust collector, and is discharged out of the dust collector through the air duct assembly 1 after being filtered by the filter cup in the dust collector, so that a cleaning effect is realized.

The air outlet duct 12 is located below the fan assembly 2, and if the baffle 13 in the air outlet duct 12 is too close to the fan assembly 2, the airflow may be directly blocked by the baffle 13, so that the flow of the airflow is affected. Thus, in the disclosed embodiment, the separation distance between the baffle 13 closest to the fan assembly 2 and the fan assembly 2 needs to be greater than the radius of the air outlet of the fan assembly 2. Thus, the noise reduction effect is good, and smooth circulation of air flow can be ensured.

According to the embodiment of the disclosure, the air duct assembly 1 provided with the baffles 13 is applied to the dust collector 100, so that noise generated in the operation of the dust collector 100 can be effectively reduced, and the use experience of a user is improved. In addition, the air duct assembly 1 applied to the dust collector 100 has simple structure and low production cost, and does not affect the whole volume of the dust collector.

The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited thereto. Within the scope of the technical idea of the utility model, a number of simple variants of the technical solution of the utility model are possible, including combinations of individual specific technical features in any suitable way. The various possible combinations of the utility model are not described in detail in order to avoid unnecessary repetition. Such simple variations and combinations are likewise to be regarded as being within the scope of the present disclosure.

Claims

1. An air duct assembly for a vacuum cleaner, the air duct assembly comprising:

2. The air duct assembly of claim 1, wherein one end of each baffle is connected to the inner wall of the air duct housing and the other end is suspended.

3. The duct assembly of claim 1, wherein each of the baffles is arranged in parallel.

4. The air duct assembly of claim 1, wherein the air outlet duct is circular, the baffle is semi-circular, and extends within the air outlet duct along a portion of the inner wall of the air duct housing in a direction away from the inner wall;

5. The duct assembly of claim 4, wherein a ratio between an extension length of the baffle and an inner diameter of the outlet duct is between 0.6 and 0.9.

6. The duct assembly of claim 1, wherein the duct assembly comprises a housing,

and a silencing layer is adhered to the inner wall of each interval area defined by the plurality of baffles.

7. The duct assembly of claim 1, wherein the duct assembly comprises a housing,

along the extending direction of the air outlet duct, the ratio between the total length of the interval area defined by the baffles and the extending length of the air outlet duct is between 0.3 and 0.6.

8. The duct assembly of claim 1, wherein the duct assembly comprises a housing,

the baffles and the air duct shell are formed into an integrated structure.

9. A vacuum cleaner, the vacuum cleaner comprising:

the duct assembly of any one of claims 1-8; and

10. A vacuum cleaner according to claim 9, wherein,

the spacing distance between the baffle nearest to the fan assembly and the fan assembly is larger than the radius of the air outlet of the fan assembly.