CN111075767B

CN111075767B - Fan assembly and bladeless fan

Info

Publication number: CN111075767B
Application number: CN201911330027.6A
Authority: CN
Inventors: 俞浩
Original assignee: Dreame Technology Shanghai Co Ltd
Current assignee: Dreame Technology Shanghai Co Ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2022-05-31
Anticipated expiration: 2039-12-20
Also published as: CN111075767A

Abstract

The utility model discloses a fan assembly and a bladeless fan, wherein the fan assembly comprises: the base is hollow inside and forms an accommodating space; an airflow generating mechanism for generating an airflow and provided in the accommodating space; the flow dividing mechanism disperses and unblocks the air flow; and the fixing structure is arranged at the butt joint of the shunting mechanism and the airflow generation mechanism and is configured to fix the sealing ring between the shunting mechanism and the airflow generation mechanism and/or fix the noise reduction sponge on the inner side of the base.

Description

Fan component and bladeless fan

Technical Field

The utility model relates to the field of bladeless fans, in particular to a fan assembly and a bladeless fan.

Background

In the bladeless fan field, it is well known to use fan assemblies of different configurations to achieve the noise reduction function of the bladeless fan. In the process of researching and realizing the noise reduction function of the bladeless fan, the inventor finds that the fan assembly in the prior art has at least the following problems:

noise is an important measure of product quality, and noise generated by the airflow generator can propagate through the interior of the machine, thereby causing a reduction in the user experience.

Accordingly, there is a need for a fan assembly and a bladeless fan to solve the above problems.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model mainly aims to provide a fan assembly and a bladeless fan, wherein gaps among a base, an airflow generating mechanism and a flow dividing mechanism are filled and sealed by noise reduction sponges, and the noise reduction sponges are fixed among the base, the airflow generating mechanism and the flow dividing mechanism by a fixing structure, so that the noise transmitted by an airflow generator to the outside is absorbed and reduced while the vibration transmission of objects is reduced.

In one aspect, the present invention provides a fan assembly comprising:

the base is hollow inside and forms an accommodating space;

an airflow generating mechanism for generating an airflow and provided in the accommodating space;

a flow dividing mechanism which disperses and unblocks the air flow; and

the fixing structure is arranged at the butt joint of the flow dividing mechanism and the airflow generating mechanism and is configured to fix the sealing ring between the flow dividing mechanism and the airflow generating mechanism and/or fix the noise reduction sponge on the inner side of the base;

the upper end face of the fixed structure is provided with a plurality of upper flanges which extend outwards along the radial direction at intervals;

the lower end face of the fixed structure is provided with a plurality of lower flanges which extend outwards along the radial direction at intervals;

the projections of the upper flange and the lower flange in the Z-axis direction are distributed in a staggered manner.

And a noise reduction sponge is arranged between the upper flange and the lower flange.

Optionally, the fixing structure is an annular structure, and the noise reduction sponge and the sealing ring are respectively disposed on the outer side and the inner side of the fixing structure.

Optionally, the lower end surface of the fixing structure extends inwards in the radial direction to form an inner flange;

wherein the seal ring is at least partially disposed on the inner flange.

Optionally, the upper end surface of the sealing ring is recessed inwards to form a clamping groove;

the lower end face of the sealing ring extends upwards along the central direction to form a claw structure.

Optionally, the contact area of the upper end face of the noise reduction sponge and the upper flange is at most 2/3;

optionally, the contact area of the lower end face of the noise reduction sponge and the lower flange is at most 2/3.

On the other hand, the utility model also provides a bladeless fan which comprises the fan assembly.

Compared with the prior art, the utility model has the beneficial effects that: the gaps among the base, the airflow generation mechanism and the shunting mechanism are filled and sealed by the noise reduction sponge, and the noise reduction sponge is fixed among the base, the airflow generation mechanism and the shunting mechanism by the fixing structure, so that the noise of outward propagation of the airflow generator is absorbed and reduced while the vibration propagation of objects is reduced.

Drawings

Fig. 1 is a sectional view of a bladeless fan according to an embodiment of the present invention;

FIG. 1a is a partial cross-sectional view of a bladeless fan according to one embodiment of the present invention;

fig. 2 is a perspective view of a proposed flow dividing mechanism according to an embodiment of the present invention;

fig. 3 is a perspective view of a separating device of the flow dividing mechanism according to one embodiment of the present invention;

fig. 4 is a plan view of a proposed flow dividing mechanism according to an embodiment of the present invention;

fig. 5 is a sectional view of a proposed flow dividing mechanism according to an embodiment of the present invention;

figure 6 is a cross-sectional view of a proposed airflow generator according to one embodiment of the present invention;

FIG. 6a is a cross-sectional view of a bladeless fan according to an embodiment of the present invention;

FIG. 7 is a perspective view of a noise reducing sponge according to one embodiment of the present invention;

FIG. 8 is a top view of a noise reduction sponge according to one embodiment of the present invention;

FIG. 9 is a perspective view of a proposed seal ring according to one embodiment of the present invention;

FIG. 9a is a cross-sectional view of a bladeless fan according to an embodiment of the present invention;

FIG. 10 is a cross-sectional view of a proposed seal ring according to one embodiment of the present invention;

FIG. 11 is a perspective view of a proposed fixation structure according to an embodiment of the present invention;

FIG. 12 is a top view of a proposed fixation structure according to one embodiment of the present invention;

fig. 13 is a sectional view of a proposed fixing structure according to an embodiment of the present invention.

Detailed Description

The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, which will enable those skilled in the art to practice the present invention with reference to the accompanying specification.

In the drawings, the shape and size may be exaggerated for clarity, and the same reference numerals will be used throughout the drawings to designate the same or similar components.

In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, etc., are defined with respect to the configurations shown in the respective drawings, and in particular, "height" corresponds to a dimension from top to bottom, "width" corresponds to a dimension from left to right, "depth" corresponds to a dimension from front to rear, which are relative concepts, and thus may be varied accordingly depending on the position in which it is used, and thus these or other orientations should not be construed as limiting terms.

Terms concerning attachments, coupling and the like (e.g., "connected" and "attached") refer to a relationship wherein structures are secured or attached, either directly or indirectly, to one another through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise.

According to an embodiment of the present invention, as shown in fig. 1 and fig. 1a, it can be seen that the fan assembly includes a base 1, an airflow generating mechanism 3, a flow dividing mechanism 2 and a fixing structure 42. The base 1 has a supporting function, and is hollow to form a containing space. The airflow generating mechanism 3 is used for generating airflow and is arranged in the accommodating space, an air inlet of the airflow generating mechanism 3 faces downwards, and an air outlet faces upwards. The airflow generating mechanism 3 is substantially coaxial with the base 1. The flow dividing mechanism 2 is arranged at the downstream of the exhaust port of the airflow generating mechanism 3 and is used for dispersing and dredging the airflow. The fixing structure 42 is disposed at a butt joint of the flow dividing mechanism 2 and the airflow generating mechanism 3, and is configured to fix the sealing ring 412 between the flow dividing mechanism 2 and the airflow generating mechanism 3 and/or fix the noise reduction sponge 411 inside the base 1.

In this embodiment, the sealing ring is disposed between the flow dividing mechanism 2 and the airflow generating mechanism 3, so that fluid leakage from a gap between the flow dividing mechanism and the airflow generating mechanism can be effectively avoided. The sponge of making an uproar falls in 1 inboard settings of base, through sponge noise absorption, can effectively the noise reduction. Furthermore, the two are arranged at the same position, and the annular outlet for upward transmission of noise in the accommodating cavity of the base is effectively blocked.

As shown in fig. 2 and 3, the flow dividing mechanism 2 includes:

a first member 21 having a hollow interior;

a second member 22, internally recessed and coaxially disposed above the first member 21;

with reference to fig. 4, at least two annular diversion ports 221 are disposed at the upper end of the second member 22, and the first member 21 and the second member 22 are disposed opposite to each other to form a diversion space.

As shown in fig. 5, the lower end of the first member 21 is provided with a peripheral skirt 211 extending downward in the axial direction, the peripheral skirt 211 is provided at intervals with protrusions 2111, and the cross-sectional area of the protrusions 2111 gradually decreases outward in the radial direction.

The air flow in the bladeless fan body enters the flow dividing mechanism 2 from the inner side of the fan body through the air flow generating mechanism 3, the air flow is separated to at least two annular flow dividing ports 221 in a flow dividing channel of the flow dividing mechanism 2, the annular flow dividing ports 221 stretch into and are tightly attached to the flow dividing channel 5, the air flow smoothly enters the flow dividing channel 5, the air flow is prevented from rapidly entering a long and narrow nozzle to form noise, and user experience is improved.

Referring now to fig. 6, the airflow generation mechanism 3 includes:

a power chamber 31 for providing kinetic energy for generating a high-speed airflow;

an impeller 33 coaxially disposed below the power chamber 31;

a draft tube 32 which is hollow inside and opened at both upper and lower ends to form an upper opening and a lower opening, respectively;

wherein, the power chamber 31 and the impeller 33 are arranged in the draft tube 32 and form an annular draft cavity 321, and the impeller 33 is in transmission connection with the power output end of the impeller driver 311, so that the impeller 33 rotates around the axis of the draft tube 32 under the driving of the impeller driver 311.

An impeller 33 is provided downstream of the gas flow in the draft tube 32.

In the embodiment, the air flow is accelerated by the impeller 33 in the airflow generator 3, and negative pressure is generated in the annular drainage cavity 321 due to the rotation of the impeller, and the air flow flows upwards along the annular drainage cavity 321, enters the flow dividing mechanism 2, flows out of the annular flow dividing port 221 into the flow dividing channel 5, and is discharged out of the bladeless fan.

In this embodiment, the fixing structure 42, the sealing ring 412 and the noise reduction sponge 411 can be regarded as one assembly 4. Referring to fig. 6a, 7, 8 and 9, the assembly 4 is shown in more detail as including a sealing ring 412, a fixing structure 42 and a noise reducing sponge 411. The seal ring 412 seals a gap between the flow dividing mechanism 2 and the airflow generating mechanism 3. The securing structure 42 secures the seal ring 412. The noise reduction sponge 411 is provided on the outer ring of the fixed structure 42. The sealing ring 412, the fixing structure 42 and the noise reduction sponge 411 are substantially in the same plane and coaxially arranged.

Reference is now made to fig. 9a, which illustrates the assembly and location of the sealing ring 412 and the securing structure 42 with the diverter mechanism 2 in greater detail. The sealing ring 412 has a groove for engaging with a downwardly extending rib of the diverter mechanism 2. The fixing structure is connected to the shunting structure through a buckle structure, and the buckle structure provides an upward force for the fixing structure so that the fixing structure can compress the sealing ring arranged on the shunting structure. The sealing ring has the function of sealing the joint of the flow dividing structure and the airflow generator. The sponge of making an uproar sets up on fixed knot constructs's groove, and the base has the contact with the sponge to the sponge of making an uproar falls and receives the extrusion of base towards the snap ring direction, and this extrusion force does not do the fixed usefulness. The noise reduction sponge and the sealing ring are respectively arranged on two sides of the fixing structure. The noise reduction sponge 411 has an exposed face facing or within the housing chamber for contacting the sound waves of the noise, the exposed area occupying more than 1/3 of the total area thereof.

As shown in fig. 10, the upper end surface of the sealing ring 412 is recessed inwards to form a clamping groove 4111;

the lower end surface of the sealing ring 412 extends upwards along the central direction to form a jaw structure 4112;

wherein the locking groove 4111 is adapted to the peripheral skirt 211 of the first member 21.

As shown in fig. 11, 12 and 13, the fixing structures 42 are provided with through holes 421 at intervals;

through hole 421 mates with protrusion 2111 on peripheral skirt 211 to form a snap-fit arrangement that secures fixation arrangement 42, and peripheral skirt 211 of first member 21 mates with snap-in groove 4111, such that seal 412 is secured within the bladeless fan.

The lower end surface of the fixed structure 42 extends inward in the radial direction to form an inner flange 422;

wherein, the sealing ring 412 is at least partially disposed on the inner flange 422, and the inner flange 422 supports the sealing ring 412, so that the sealing ring 412 and the peripheral skirt 211 of the first member 21 do not slip off due to the vibration of the internal airflow generating mechanism 3, and further the sealing ring 412 is fixed in the bladeless fan and the fixing structure 42 further compresses the sealing ring 412 towards the gap between the flow dividing mechanism 2 and the airflow generating mechanism 3, so that the gap is sufficiently sealed.

The upper end face of the fixing structure 42 is provided with at least four upper flanges 424 at intervals extending outwards in the radial direction; the lower end surface of the fixing structure 42 is provided with at least four lower flanges 423 extending outwards along the radial direction at intervals; the projections of the upper flange 424 and the lower flange 423 in the Z-axis direction are distributed in a staggered manner.

The noise reduction sponge 411 is arranged between the upper flange 424 and the lower flange 423, and the projections of the upper flange 424 and the lower flange 423 in the Z-axis direction are distributed in a staggered manner, so that the noise reduction sponge 411 has force in the Z-axis direction everywhere.

The contact area of the upper end face of the noise reduction sponge 411 with the upper flange 424 is at most 2/3;

the contact area of the lower end face of the noise reduction sponge 411 with the lower flange 423 is at most 2/3.

In the embodiment, the noise reduction sponge 411 is in close contact with the inner wall of the base 1 to block the outlet of the upward transmission of noise in the accommodating space, and since the contact area of the noise reduction sponge 411 with the upper flange 424 and the lower flange 423 is only 2/3 at most, the rest is exposed in the accommodating space, and the noise generated by the airflow generating mechanism 3 and transmitted to the downstream of the airflow transmission direction is absorbed, thereby achieving the effect of reducing noise.

Various modifications may be made to the inventive concept by those skilled in the art without departing from the scope of the utility model as defined in the appended claims. For example, the pressing force between the base 1 and the fixed structure 42 is sufficiently large, and the upper flange 424 and the lower flange 423 may be reduced in number or not provided while ensuring that the noise reduction sponge 411 is fixed between the base 1 and the fixed structure 42; the fixing structure between the fixing structure 42 and the shunt mechanism 2 may also be disposed between the fixing structure 42 and the base 1.

The number of apparatuses and the scale of the process described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.

While embodiments of the utility model have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the utility model pertains, and further modifications may readily be made by those skilled in the art, it being understood that the utility model is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.

Claims

1. A fan assembly, comprising:

the base (1) is hollow inside and forms an accommodating space;

an airflow generation mechanism (3) for generating an airflow and provided in the accommodation space;

a diversion mechanism (2) which disperses and unblocks the air flow; and

the fixing structure (42) is arranged at the butt joint of the flow dividing mechanism (2) and the airflow generating mechanism (3) and is configured to fix the sealing ring (412) between the flow dividing mechanism (2) and the airflow generating mechanism (3) and/or fix the noise reduction sponge (411) on the inner side of the base (1);

the upper end face of the fixed structure (42) is provided with a plurality of upper flanges (424) which extend outwards along the radial direction at intervals;

the lower end face of the fixed structure (42) is provided with a plurality of lower flanges (423) which extend outwards along the radial direction at intervals;

the projections of the upper flange (424) and the lower flange (423) in the Z-axis direction are distributed in a staggered manner;

a noise reduction sponge (411) is arranged between the upper flange (424) and the lower flange (423).

2. The fan assembly according to claim 1, characterized in that when the fixing structure (42) is configured to fix the sealing ring (412) between the flow dividing mechanism (2) and the airflow generating mechanism (3) and to fix the noise reduction sponge (411) inside the base (1);

the fixed structure (42) is of an annular structure, and the noise reduction sponge (411) and the sealing ring (412) are arranged on the outer side and the inner side of the fixed structure (42) respectively.

3. The fan assembly of claim 1,

when the fixing structure (42) is configured to fix the sealing ring (412) between the flow dividing mechanism (2) and the airflow generating mechanism (3), the lower end surface of the fixing structure (42) extends inwards in the radial direction to form an inner flange (422);

wherein the sealing ring (412) is at least partially disposed on the inner flange (422).

4. The fan assembly of claim 1,

when the fixing structure (42) is configured to fix the sealing ring (412) between the flow dividing mechanism (2) and the airflow generating mechanism (3), the upper end surface of the sealing ring (412) is inwards recessed to form a clamping groove (4111);

the lower end surface of the sealing ring (412) extends upwards along the central direction to form a claw structure (4112).

5. A bladeless fan, comprising a fan assembly according to any one of claims 1-4.