WO2016054947A1

WO2016054947A1 - Vacuum cleaner

Info

Publication number: WO2016054947A1
Application number: PCT/CN2015/086430
Authority: WO
Inventors: 刘胜辉
Original assignee: 江苏美的清洁电器股份有限公司
Priority date: 2014-10-09
Filing date: 2015-08-08
Publication date: 2016-04-14
Also published as: CN204049516U

Abstract

A vacuum cleaner, comprising a casing (1), a motor outer cover (2) inside the casing, a motor inner cover (3) and sound absorption wool (4) both located inside the motor outer cover; a first air inlet opening (11) and a first air exhaust opening (12) are provided on the casing; a second air inlet opening (21) communicating with the first air inlet (11) opening is provided on the motor outer cover; a first circulating air duct (5) is formed between the upper portion of the motor outer cover and the casing, and one end of the first circulating air duct communicates with the first air exhaust opening; a second circulating air duct (6) is formed between the lower portion of the motor outer cover and the motor inner cover; a plurality of sound absorption holes (31) are provided on the motor inner cover, and one end of the second circulating air duct communicates with the plurality of sound absorption holes; the sound absorption wool is located within the second circulating air duct, and at least one ventilation hole is provided where the sound absorption wool directly faces the sound absorption holes. The sound absorption wool of the vacuum cleaner can reduce the air flow rate and noise caused by an air flow impacting the channel wall, while solving the problems of the sound absorption wool blocking an air flow, as well as the resultant excessively high temperature and low suction performance.

Description

vacuum cleaner

Technical field

The present invention relates to the field of household appliances, and in particular to a vacuum cleaner.

Background technique

With the continuous development of the vacuum cleaner industry, people are increasingly demanding vacuum cleaners, requiring large suction, low noise, and also small and light, especially horizontal dust cups; vacuum cleaners using traditional silent systems, silencer sponges The main function is to buffer the flow velocity of the airflow and reduce the flushing noise of the airflow to the channel wall. However, as shown in Fig. 1, because the sponge 1' is a whole, the airflow is often poor, resulting in excessive temperature rise and at the same time making the whole The suction of the machine drops, so you have to sacrifice the suction or increase the size of the whole machine to achieve the mute effect.

Summary of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art.

Accordingly, an object of the present invention is to provide a vacuum cleaner that effectively solves the problem that the airflow is not smooth due to the addition of the silencing sponge in the silent air passage, resulting in an excessive temperature rise.

In order to achieve the above object, the present invention provides a vacuum cleaner comprising: a housing having a first air inlet and a first air outlet; a motor housing, the motor housing being mounted in the housing a second air inlet is disposed on the motor cover, and the second air inlet is in communication with the first air inlet, and a first rotary air passage is formed between the upper portion of the motor cover and the housing, One end of a rotating air passage is in communication with the first air outlet; a motor inner cover, the motor inner cover is mounted in the motor housing, and a second portion between the lower portion of the motor housing and the motor inner cover forms a second a rotating air duct, the motor inner cover is provided with a plurality of silencing holes, one end of the second rotating air passage is connected to the plurality of silencing holes, and the other end is connected to the other end of the first rotating air passage And the muffler, the muffler is located in the second revolving air duct, and the muffler is provided with at least one ventilation hole at the muffling hole.

According to the vacuum cleaner provided by the invention, the airflow enters from the first air inlet, enters the motor cover through the second air inlet, enters the motor room, flows into the motor, and then goes from the motor air outlet to the motor inner cover, and then silences through the motor inner cover silencer hole After that, the second rotary air passage formed by the inner cover of the motor and the outer cover of the motor is finally flowed along the first rotary air passage formed by the flow of the sound-absorbing cotton to the motor cover and the casing to reach the first air outlet and return to the outside air. According to the vacuum cleaner provided by the invention, the sound-absorbing cotton not only buffers the flow velocity of the airflow, but also reduces the flushing noise of the airflow to the channel wall; at the same time, the silencer is provided with at least one ventilation hole at the sound-absorbing hole, and the ventilation hole can make the airflow flow smoothly, no longer The phenomenon that the temperature rise is too high due to poor air outlet, which causes the suction of the whole machine to decrease. In addition, even in a very small space, the structure of the muffler can be placed, making it possible to miniaturize the silent model.

In addition, the vacuum cleaner provided in accordance with the present invention has the following additional technical features:

According to an embodiment of the invention, the area of the venting hole is greater than or equal to the area of the silencing hole.

The area of the ventilation hole on the muffler is greater than or equal to the area of the muffler hole, so as to prevent the muffling cotton from blocking the outflow of the airflow in the muffler hole, so that the airflow is smooth, and the temperature rise is not too fast due to poor air outlet, so that the suction of the whole machine is reduced. The phenomenon.

According to an embodiment of the invention, the venting holes are circular.

According to an embodiment of the invention, the venting opening is elliptical.

According to an embodiment of the invention, the venting opening is rectangular.

The circular, elliptical and rectangular structures are simple in structure and easy to process and form, which effectively reduces the processing difficulty of the muffler.

According to an embodiment of the invention, the damper is provided with four of the vent holes.

Four ventilating holes are provided on the muffler, which increases the total venting area, which makes the circulation of the airflow smoother. The temperature rise is not too fast due to poor airflow, which causes the suction of the whole machine to decrease.

According to an embodiment of the invention, the four venting holes are the same size and shape.

The size and shape of the four ventilation holes on the muffler are similar, forming a standardization, which is convenient for mass production and beautiful in appearance.

According to an embodiment of the invention, four of said venting holes are uniformly disposed on said muffler.

The four ventilation holes are evenly arranged on the muffler, the layout is more reasonable, the manufacturing is easy, the appearance is beautiful, and the air volume is uniform, and the noise phenomenon caused by the excessive air volume in the local area does not occur.

According to an embodiment of the invention, the plurality of silencing holes are all circular.

The silencing hole is round, easy to manufacture and beautiful in appearance.

According to an embodiment of the invention, a plurality of the silencing holes are uniformly disposed on the motor inner cover.

The muffler hole is evenly arranged on the inner cover of the motor, which is convenient for manufacture, beautiful in appearance, and makes the air volume uniform, and there is no noise phenomenon caused by excessive air volume in a local area.

The additional aspects and advantages of the invention will be set forth in the description which follows, and

DRAWINGS

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from

1 is a schematic structural view of a muffler in the prior art;

2 is a cross-sectional structural view of a vacuum cleaner according to an embodiment of the invention;

Fig. 3 is a structural schematic view of the sound absorbing cotton in the vacuum cleaner shown in Fig. 2.

Wherein, the correspondence between the reference numerals and the component names in FIG. 1 is:

1' silencer

The correspondence between the reference numerals and the part names in Figures 2 and 3 is:

1 housing, 11 first air inlet, 12 first air outlet, 2 motor cover, 21 second air inlet, 3 motor inner cover, 31 silencer hole, 4 silencer, 41 ventilation hole, 5 first rotary air passage, 6 Second revolving duct.

detailed description

The present invention will be further described in detail below with reference to the drawings and specific embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the invention. The present invention may be embodied in other ways than those described herein. Therefore, the scope of the present invention is not limited by the specific embodiments disclosed below.

A vacuum cleaner according to some embodiments of the present invention will now be described with reference to FIGS. 2 and 3.

In Figure 2, the direction of the arrow is the direction of flow of the wind.

As shown in FIG. 2, a vacuum cleaner provided by some embodiments of the present invention includes: a housing 1, a motor cover 2, a motor inner cover 3, and a sound-absorbing cotton 4,

Specifically, the housing 1 is provided with a first air inlet 11 and a first air outlet 12, and the motor cover 2 is installed in the housing 1. The motor cover 2 is provided with a second air inlet 21, a second air inlet 21 and a second air inlet 21 An air inlet 11 is in communication, and a first rotating air passage 5 is formed between the upper portion of the motor cover 2 and the casing 1. One end of the first rotating air passage 5 communicates with the first air outlet 12; the motor inner cover 3 is mounted on the motor In the outer cover 2, a second rotary air duct 6 is formed between the lower portion of the motor cover 2 and the motor inner cover 3. The motor inner cover 3 is provided with a plurality of silencing holes 31, one end of the second rotary air passage 6 and a plurality of silencing holes 31 is connected to each other, and the other end is in communication with the other end of the first revolving duct 5; the muffler 4 is located in the second revolving duct 6, and the muffling cotton 4 is provided with at least one vent hole 41 at the sound absorbing hole 31.

Among them, the motor is placed inside the motor cover.

Preferably, as shown in FIG. 2, the area of the vent hole 41 is equal to or larger than the area of the muffling hole 31.

In a specific example of the embodiment, as shown in FIG. 3, the vent hole 41 is circular.

In another specific example of the embodiment, the vent hole 41 is elliptical.

In still another specific example of the embodiment, the vent hole 41 is rectangular.

Of course, the venting holes may be other shapes, such as diamonds, polygons, etc., and are not described herein, but their applications are all within the scope of the present invention.

In any of the above embodiments, as shown in FIG. 3, the damper 4 is provided with four vent holes 41.

Preferably, as shown in FIG. 3, the four vent holes 41 are the same in size and shape.

Further, preferably, as shown in FIG. 3, four vent holes 41 are uniformly disposed on the muffler 4.

Preferably, as shown in FIG. 2, the plurality of silencing holes 31 are all circular.

The silencing hole is round, easy to manufacture and beautiful in appearance.

Further, preferably, as shown in FIG. 2, a plurality of silencing holes 31 are uniformly disposed on the motor inner cover 3.

In summary, the vacuum cleaner provided by the present invention adopts a brand new muffling cotton structure, and the muffler is located in the second rotary air passage, which not only buffers the air flow velocity, but also reduces the flushing noise of the airflow to the channel wall; Mianzheng has at least one ventilation hole at the sound-absorbing hole, which can make the airflow flow smoothly, and there is no longer a phenomenon that the temperature rise is too high due to poor air outlet, which causes the suction of the whole machine to decrease. In addition, even in a very small space, the structure of the silencer can be placed, making miniaturization Silent models are possible.

In the description of the present specification, the term "plurality" means two or more; the terms "installation", "connected", "connected", etc., should be understood broadly, for example, "connected" may be a fixed connection, It may be a detachable connection or an integral connection; "connected" may be directly connected or indirectly connected through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

In the description of the present specification, the description of the terms "one embodiment", "some embodiments" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment of the invention or In the example. In the present specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

A vacuum cleaner, comprising:

a housing having a first air inlet and a first air outlet;

a motor cover, the motor cover is mounted in the housing, the motor cover is provided with a second air inlet, the second air inlet is connected to the first air inlet, and the upper part of the motor cover is Forming a first rotary air passage between the housings, and one end of the first rotary air passage is in communication with the first air outlet;

a motor inner cover, the motor inner cover is installed in the motor outer cover, a second rotary air passage is formed between a lower portion of the motor outer cover and the motor inner cover, and the motor inner cover is provided with a plurality of silencers One end of the second rotary air passage is in communication with the plurality of sound-absorbing holes, and the other end is in communication with the other end of the first rotary air passage; and

The muffling cotton is located in the second revolving air duct, and the muffler is provided with at least one ventilation hole at the muffling hole.
A vacuum cleaner according to claim 1, wherein

The area of the vent hole is greater than or equal to the area of the sound absorbing hole.
A vacuum cleaner according to claim 2, wherein

The venting holes are circular.
A vacuum cleaner according to claim 2, wherein

The venting holes are elliptical.
A vacuum cleaner according to claim 2, wherein

The venting holes are rectangular.
A vacuum cleaner according to any one of claims 1 to 5, characterized in that

The damper is provided with four vent holes.
A vacuum cleaner according to claim 6, wherein

The four vent holes are the same in size and shape.
A vacuum cleaner according to claim 7, wherein

Four of the vent holes are evenly disposed on the muffler.
A vacuum cleaner according to claim 6, wherein

A plurality of the silencing holes are all circular.
A vacuum cleaner according to claim 9, wherein:

A plurality of the sound absorbing holes are uniformly disposed on the motor inner cover.