CN210265271U - Fan assembly with noise reduction function and clothes dryer - Google Patents

Abstract

The utility model provides a fan subassembly with function of making an uproar is fallen, fan subassembly includes base, fan and wind channel, and the fan setting is in the wind channel, and the wind channel is located the base, and the wind channel is a spiral case structure, establishes the volute that contains the fan and the spiral way as the air-out passageway in including, and the junction of volute and spiral way is inwards protruding to be established and is formed the snail tongue, and the volute is equipped with a vortex piece on being close to the inside wall of snail tongue department, all has the space between vortex piece and the inside wall of volute, the fan. The fan assembly is additionally provided with the turbulence piece at the air inlet, the distribution of the airflow state near the volute chamber is disturbed to a certain extent, most of airflow is prevented from directly impacting the volute chamber, and the function of noise reduction is realized.

Description

Fan assembly with noise reduction function and clothes dryer

Technical Field

The utility model relates to a dryer technical field, concretely relates to fan subassembly and dryer with function of making an uproar falls.

Background

In the drying process of the clothes dryer, high-heat air in an air channel is conveyed to the inner barrel under the action of wind to be fully contacted with wet clothes, and then hot air continuously takes away moisture in the clothes and is pumped out of the inner barrel under the action of a fan, so that the aim of drying the clothes is fulfilled.

When the hot air flow is changed into low-temperature high-humidity air flow through the sufficient heat exchange between the inner barrel and the clothes and then is discharged out of the inner barrel to carry out the next circulation again, cotton wool separated from the clothes is mixed in the air, and the cotton wool is attached to the filter screen after the air passes through the filter screen. Along with the continuous accumulation of cotton wool, the resistance of cold air passing through the filter screen can be increased, namely the resistance of the air inlet of the fan is increased. For the clothes dryer with the front-mounted drying fan, the filter screen is close to the air inlet of the fan, after the filter screen is blocked, the resistance of the air inlet is increased, the pressure of the suction side of the fan is low, the airflow at the high pressure side of the air outlet flows back to the low pressure side at a high speed, the airflow impacts the volute and the volute tongue wall surface, the BPF sound of the centrifugal fan in the air duct is highlighted, and the conventional volute air duct structure is shown in fig. 1.

However, in modern society, users have higher requirements for vibration noise of products, and low noise and low vibration gradually become a consideration for customers to select products. Therefore, on the premise of not influencing the drying performance of the clothes dryer, the structure of the air duct needs to be optimized, and the fan assembly with the noise reduction function is provided, so that the BPF noise of the fan is effectively reduced.

Disclosure of Invention

In view of this, the utility model aims at providing a fan subassembly with function of making an uproar falls to and provide a use this dryer with fan subassembly of making an uproar falls, this fan subassembly has add the vortex piece in air intake department, has disturbed the air current state distribution near the volute to a certain extent, and has hindered most air current and directly strikeed the volute, realizes falling the function of making an uproar.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

the utility model provides a fan subassembly with function of making an uproar is fallen, fan subassembly includes base, fan and wind channel, the fan sets up in the wind channel, and the wind channel is located on the base, the wind channel is a spiral case structure, including establishing the interior dress and containing the volute of fan and the spiral way as the air-out passageway, the junction of volute and spiral way is inwards protruding to be established and is formed the snail tongue, the volute is equipped with a vortex piece on being close to the inside wall of snail tongue department, all have the space between vortex piece and the volute inside wall, the fan.

Preferably, the spoiler is of a sheet structure and has the same radian as the inner side wall of the volute, and the thickness of the spoiler is 0.5-1 mm.

Preferably, the gap distance between the spoiler and the fan is larger than the gap distance between the spoiler and the inner side wall of the volute.

Preferably, the gap distance between the spoiler and the inner side wall of the volute chamber is 0.8-1.0 mm.

Preferably, the top end of the spoiler is lower than the top of the volute tongue, and an included angle α formed by the top end and the bottom end of the spoiler and the center of the volute chamber ranges from 10 degrees to 15 degrees.

Preferably, a plurality of regularly-shaped strip-shaped textures are uniformly arranged on one side surface of the spoiler facing the fan.

Preferably, an installation groove is formed in the inner wall side of the volute chamber close to the volute tongue, and the spoiler is embedded into the installation groove and fixedly arranged.

Preferably, the spoiler and the volute tongue are integrally formed into an integral structure through injection molding.

And simultaneously, the utility model also provides a clothes dryer, include as above arbitrary one fan subassembly with fall the function of making an uproar.

Compared with the prior art, the utility model provides a pair of fan subassembly with function of making an uproar falls, on the too big basis of dryer stoving wind channel noise that current filter screen is close to the drying fan inlet scoop, a wind channel structure with vortex piece is provided, this structure does not have the influence to the amount of wind of system and the stoving performance of dryer under the normal condition, and still enable the wind channel system and keep better noise performance after the filter screen blocking, reduce and pat the gas particle periodically by centrifugal fan blade and arouse the volute chamber, the volute tongue produces the noise that periodic vibration arouses, improve stoving noise sound quality, promote the product satisfaction.

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 these drawings without creative efforts.

FIG. 1 is a schematic diagram of a volute duct according to the prior art;

fig. 2 is a schematic perspective view of a fan assembly with a noise reduction function provided by the present invention;

fig. 3 is a front view of a fan assembly with a noise reduction function provided by the present invention;

FIG. 4 is a schematic view showing the arrangement positions of the spoiler, the volute and the volute tongue;

FIG. 5 is an enlarged view of portion A of FIG. 3;

FIG. 6 is a schematic structural view of the spoiler fixed to the inner sidewall of the volute via the mounting groove;

FIG. 7 is a schematic view of the position between the spoiler and the volute tongue when the fan assembly is applied to a clothes dryer;

FIG. 8 is a schematic view of a fan assembly in use with a filter screen;

fig. 9 is a noise comparison table of the air duct structure and the existing air duct structure under the conditions of blocked filter and unblocked filter screen.

Reference numerals and component parts description referred to in the drawings:

1. a base; 2. a fan; 3. a filter screen; 4. an air inlet; 5. a volute chamber; 6. a snail way; 7. a volute tongue; 8. a spoiler; 9. and (4) mounting the groove.

Detailed Description

The technical solution of the present invention will be described clearly and completely through the following detailed description. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 2 to 8, a fan assembly with a noise reduction function includes a base 1, a fan 2 and an air duct, wherein the fan 2 is disposed in the air duct, and the air duct is located on the base 1. The fan assembly is applied to the existing clothes dryer, wherein an air inlet 4 of a filter screen 3 of the clothes dryer is close to an air suction opening of a fan 2.

The air duct is designed into a volute structure and comprises a volute chamber 5 with a fan 2 arranged therein and a volute 6 serving as an air outlet channel, and a volute tongue 7 is formed at the connection part of the volute chamber 5 and the volute 6 in an inward protruding mode. As an innovative structure, the inner side wall of the volute 5 close to the volute tongue 7 is provided with a spoiler 8, and gaps are reserved among the spoiler 8, the inner side wall of the volute 5 and the fan 2. Specifically, the placement position of the spoiler 8 requires that the main sound source position be covered.

In order to better fit the spoiler 8 with the inner side wall of the volute 5 and facilitate fixation, the spoiler 8 is designed to be of a sheet structure and has the same radian as the inner side wall of the volute 5. Under the condition that the technical conditions allow, the spoiler 8 and the volute tongue 7 can be designed into a whole and then are integrally formed by injection molding. Certainly also can set up a mounting groove 9 in the inner wall side department that volute 5 is close to snail tongue 7 department, and vortex piece 8 imbeds in mounting groove 9, fixes the setting through interference fit or through glue, only needs to guarantee that vortex piece 8 is fixed for volute 5, can not become flexible can.

In this embodiment, the thickness of vortex piece 8 is 0.5 ~ 1mm, and vortex piece 8's material can be general plastics or some take damped sound absorption and noise reduction materials, and simultaneously, vortex piece 8 also can evenly be provided with the bar texture of a plurality of regular shapes on the side of fan 2 to increase the vortex effect.

The space distance between the spoiler 8 and the fan 2 is greater than the space distance between the spoiler 8 and the inner side wall of the volute 5, namely the space distance between the spoiler 8 and the fan 2 is as large as possible under the conditions of structural size and system air volume allowance, so that the purpose of noise reduction can be achieved, the space distance between the spoiler 8 and the inner side wall of the volute 5 is 0.8-1.0 mm, the top end of the spoiler 8 is lower than the top of the volute tongue 7, and the top end of the spoiler 8, the bottom end and the center of the volute 5 form an included angle α in a range of 10-15 degrees.

Referring to fig. 7, when the fan assembly is applied to a clothes dryer of a certain type, the distance between the spoiler 8 and the inner side wall of the volute 5 is 0.8mm, the top end and the bottom end of the spoiler 8 form 13.9 degrees with the center of the volute 5, and the top end of the spoiler 8 is 16mm lower than the top of the volute tongue 7. Based on the structure, under the condition that the filter screen 3 is blocked or not blocked, the noise contrast test is carried out on the clothes dryer which does not adopt the fan assembly at present, and the test result can be seen in fig. 9. When the filter screen 3 is not blocked, the total value of the actually measured noise is basically consistent with the total value of the actually measured noise, and the peak value of the noise is also basically consistent. Under the condition that filter screen 3 blockked up, the noise total value and the noise peak value of this fan subassembly obviously reduce, and the bad improvement effect of body feeling is showing.

The utility model provides a pair of fan subassembly with function of making an uproar is fallen, this fan subassembly has set up the vortex piece in air intake department, has disturbed near the air current state distribution of spiral case to a certain extent, reduces and pat the noise that the gas particle arouses volute room, volute tongue production periodic vibration arouses periodically by centrifugal fan blade, improves stoving noise sound quality, promotes the product satisfaction.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. The utility model provides a fan subassembly with function of making an uproar is fallen, fan subassembly includes base, fan and wind channel, the fan sets up in the wind channel, and the wind channel is located on the base, its characterized in that: the air duct is of a volute structure and comprises a volute chamber and a volute channel, wherein the volute chamber is internally provided with the fan, the volute channel is used as an air outlet channel, a connecting part of the volute chamber and the volute channel is inwards and convexly arranged to form a volute tongue, a turbulence piece is arranged on the inner side wall of the volute chamber close to the volute tongue, and gaps are formed among the turbulence piece, the inner side wall of the volute chamber and the fan.

2. The fan assembly with noise reduction function according to claim 1, wherein: the turbulence piece is of a sheet structure and has the same radian as the inner side wall of the volute, and the thickness of the turbulence piece is 0.5-1 mm.

3. The fan assembly with noise reduction function according to claim 1, wherein: the gap distance between the turbulence piece and the fan is larger than the gap distance between the turbulence piece and the inner side wall of the volute chamber.

4. The fan assembly with noise reduction function of claim 3, wherein: the gap distance between the turbulence piece and the inner side wall of the volute chamber is 0.8-1.0 mm.

5. The fan assembly with the noise reduction function as claimed in claim 1, wherein the top end of the spoiler is lower than the top of the volute tongue, and an included angle α formed by the top end and the bottom end of the spoiler and the center of the volute chamber ranges from 10 ° to 15 °.

6. The fan assembly with noise reduction function according to claim 1, wherein: a plurality of regularly-shaped strip-shaped textures are uniformly arranged on one side face, facing the fan, of the turbulence piece.

7. The fan assembly with noise reduction function according to claim 1, wherein: the inner wall side of the volute chamber close to the volute tongue is provided with an installation groove, and the turbulence piece is embedded into the installation groove and fixedly arranged.

8. The fan assembly with noise reduction function according to claim 1, wherein: the turbulence piece and the volute tongue are integrally formed into an integral structure through injection molding.

9. A clothes dryer, characterized in that: the fan assembly with the noise reduction function comprises any one of claims 1 to 8.

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