CN108125619B - A dust and gas separation device and a vacuum cleaner using the same - Google Patents

Abstract

The invention discloses a dust and gas separation device and a vacuum cleaner using the device. An air inlet duct is formed at the center of the dust cup to form an air inlet air duct, so that the dust gas directly enters from the air inlet air duct in the center of the dust cup. There is no multiple air inlet reversal, which reduces the loss of air volume, is more conducive to ash rejection, and improves the performance and suction of the whole machine. And because the air inlet duct is located in the center, the inside of the dust cup is still a circular structure, which is convenient for the formation of cyclone, improves the dust and gas separation efficiency, and increases the dust storage capacity of the dust cup.

Description

A dust and gas separation device and a vacuum cleaner using the same

technical field

The invention belongs to the field of vacuum cleaner structure design, and particularly relates to a vacuum cleaner dust and gas separation device and a vacuum cleaner using the same.

Background technique

Vacuum cleaners can be divided into horizontal vacuum cleaners, vertical vacuum cleaners and hand-held vacuum cleaners according to their different structures. Users can choose different types of vacuum cleaners according to different cleaning needs.

Handheld vacuum cleaners are mainly used for cleaning in cars because of their compact size, portability and convenience. They also have a good cleaning effect on keyboards and electrical appliances. The hand-held vacuum cleaner generally includes the dust cup filter part at the front end and the motor part at the back end. The dust enters the dust cup filter system through the air duct to realize the separation of dust and gas. The separated dust falls into the dust cup and the air is drawn out. At present, in the dust cup filtration system of vacuum cleaners, most of them are placed on the side of the air duct, and dust, hair, etc. enter the dust cup through the air duct for separation and filtration, so that the fine dust and hair will be reversed many times when passing through the air duct. , which is not conducive to ash throwing, and also easily leads to an increase in air volume loss, resulting in a decrease in the performance and suction of the whole machine. In addition, the side air duct destroys the circular structure inside the dust cup, which is not conducive to the formation of a cyclone, affects the dust and gas separation effect, and also reduces the dust storage volume of the dust cup.

Therefore, in view of the above problems, it is necessary to propose a new type of dust and gas separation device, which can effectively solve the problem of large loss of air volume in the air duct by changing the setting position of the air duct, and at the same time facilitate the formation of cyclone, effectively improve the dust and gas separation efficiency, and Increase the dust storage capacity of the dust cup.

SUMMARY OF THE INVENTION

In view of this, the present invention provides a dust-gas separation device. By arranging the air inlet air duct at the center of the dust cup, it is convenient to form a cyclone, improve the dust-gas separation efficiency, effectively solve the problem of large air volume loss in the air duct, and at the same time. Increase the dust storage capacity of the dust cup.

According to the purpose of the present invention, a dust and gas separation device is proposed, which includes a dust cup and a cyclone arranged inside the dust cup, a cyclone space is formed between the cyclone and the dust cup, and the bottom of the dust cup forms an inlet that communicates with the outside. The air inlet is provided with an air inlet duct at the center of the dust cup, one end of the air inlet duct is connected to the air inlet and sealed, and the other end extends upward to the cyclone.

Preferably, the cyclone includes a cyclone cover, and a helical cyclone duct is formed in the cyclone cover, and the entrance of the cyclone duct is located in the middle of the cyclone cover and communicates with the top of the air inlet duct The cyclone cover is also formed with a cyclone cover air outlet that communicates with the cyclone space, and the outlet of the cyclone air duct is communicated with the air outlet of the cyclone cover.

Preferably, a nozzle extends downward from the middle of the cyclone cover, and the bottom of the nozzle is butted with the top of the air inlet duct.

Preferably, the top of the air inlet duct extends into the cyclone cover, a cyclone air duct is formed between the inner wall of the cyclone cover and the outer wall of the air inlet duct, and an air outlet is provided on the part of the air inlet duct located in the cyclone hood The cyclone cover is provided with an air outlet of the cyclone cover communicating with the cyclone space, and the air outlet and the air outlet of the cyclone cover are arranged in a dislocation.

Preferably, the air outlet is arranged higher than the air outlet of the cyclone hood, and the air outlet is arranged opposite to the air outlet of the cyclone hood.

Preferably, the cyclone further comprises a mesh cover arranged downstream of the cyclone cover, an air inlet duct is formed in the air inlet duct, the dust enters the air inlet duct from the air inlet, and runs upwards into the cyclone air duct , the dust and gas are reversed in the cyclone air duct to form a spiral air flow, and the spiral air flow runs from the outlet of the cyclone hood to the cyclone space to separate the dust and gas. The separated dust falls into the bottom of the dust cup, and the separated air runs downstream through the The mesh cover is filtered and discharged.

Preferably, the mesh cover is arranged below the cyclone cover, and the cyclone cover is also formed with a return air outlet, and the separated air runs downstream and is filtered by the mesh cover before being discharged through the return air outlet.

Preferably, the bottom of the air inlet duct is an elliptical structure matching the air inlet of the dust cup, the top of the air inlet duct is a circular structure, and the diameter of the air inlet duct gradually increases from bottom to top.

Preferably, the bottom of the dust cup can be rotated to open, and one end of the air inlet duct is detachably connected to the bottom of the dust cup.

In order to solve the above-mentioned technical problem, the present invention also discloses a vacuum cleaner, which includes the above-mentioned dust-gas separation device.

Compared with the prior art, the advantages of the dust-gas separation device disclosed in the present invention are:

In the present invention, an air inlet duct is arranged at the center of the dust cup to form an air inlet air duct, so that the dust gas directly enters from the air inlet air duct in the center of the dust cup, there is no multiple air inlet reversal, the loss of air volume is reduced, and the Conducive to throwing ash, improving the performance and suction of the whole machine.

And because the air inlet air duct is located in the center, the inside of the dust cup is still a circular structure, which is convenient for the formation of cyclone, improves the dust and gas separation efficiency, and increases the dust storage capacity of the dust cup.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

FIG. 1 is a front view of the dust and gas separation device disclosed in the present invention.

FIG. 2 is a front cross-sectional view of the dust-gas separation device disclosed in the present invention.

Figure 3 is a diagram of the internal structure of the dust and gas separation device.

FIG. 4 is an exploded view of the structure in FIG. 3 .

FIG. 5 is a schematic view of the structure of the cyclone hood.

FIG. 6 is a perspective view of the dust and gas separation device disclosed in the present invention.

FIG. 7 is a schematic structural diagram of Embodiment 2. FIG.

The name of the corresponding part represented by the number or letter in the figure:

1. Dust cup 2. Cyclone cover 3. Air inlet duct 4. Net cover

11. Air inlet 12. Dust collection space 13. Connection part 14. Cyclone space

21. Cyclone duct 22. Cyclone cover outlet 23. Air return outlet 24. Take over

31. Air inlet duct 32. Air outlet

Detailed ways

As mentioned in the background art section, at present, in the dust cup filter system of vacuum cleaners, most of the separation devices are used on the side of the air duct. When the dust and hair pass through the air duct, they will be reversed many times, which is not conducive to dust rejection and leads to the whole process. Machine performance and suction decrease. In addition, the side air duct destroys the circular structure inside the dust cup, which is not conducive to the formation of a cyclone and affects the effect of dust and gas separation. Therefore, the present invention provides a dust-gas separation device in view of the deficiencies in the prior art.

The technical solutions of the present invention will be clearly and completely described below through specific embodiments. Obviously, the described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Example 1

Please refer to FIG. 1 to FIG. 6 together. As shown in the figures, a dust and gas separation device includes a dust cup 1 and a cyclone arranged inside the dust cup. A cyclone space 14 is formed between the cyclone and the dust cup. The dust cup 1 The bottom of the dust cup 1 forms an air inlet 11 that communicates with the outside. There is an air inlet duct 3 at the center of the dust cup 1. One end of the air inlet duct 3 is connected to the air inlet 11 and sealed, and the other end extends upward to the cyclone.

Further, the air inlet 11 at the bottom of the dust cup 1 is bent upward to form a connecting portion 13, the air inlet 11 is formed inside the connecting portion 13, the top of the connecting portion 13 is used to connect and fix the air inlet duct 3, and the bottom of the air inlet duct 3 is connected on the connecting portion 13 and sealed. One end of the air inlet duct is detachably connected to the connecting portion. Specifically, the connection between the connecting portion 13 and the air inlet duct 3 can be in the form of a snap connection. connection, and at the same time prevent dust from leaking into the dust collecting space 12 from the connection.

In addition, the bottom of the dust cup 1 can be turned to open, which is convenient for dumping the dust in the dust cup.

In order to further improve the sealing effect, components such as sealing rings can be arranged at the connection to ensure the airtightness of the connection.

The cyclone comprises a cyclone hood 2, and a spiral cyclone duct 21 is formed in the cyclone hood 2. The entrance of the cyclone duct 21 is located in the middle of the cyclone hood 2 and communicates with the top of the air inlet duct 3. The cyclone hood 2 is also formed with The air outlet 22 of the cyclone cover communicates with the cyclone space 14 , and the outlet of the cyclone air duct 21 is communicated with the air outlet 22 of the cyclone cover. Wherein, the air outlet of the cyclone hood can be arranged on one side or the bottom of the cyclone hood, and in the present application, it is preferably arranged on the bottom of the cyclone hood.

In the specific design, a nozzle 24 can be extended downward from the middle of the cyclone cover 2 , and the bottom of the nozzle 24 is butted with the top of the air inlet duct 3 , so as to guide dust into the cyclone duct 21 . In other embodiments, a central hole may be formed in the middle of the cyclone cover 2, and the top of the air inlet duct 3 is directly connected to the central hole, and the central hole forms the entrance of the cyclone duct.

The cyclone also includes a mesh cover 4 arranged downstream of the cyclone hood 2, an air inlet duct 31 is formed in the air inlet duct 3, and the dust enters the air inlet duct 31 from the air inlet 11, and runs upward to the cyclone air duct 21. , the dust gas is reversed in the cyclone air duct 21 to form a spiral airflow, and the spiral airflow runs from the cyclone air inlet 22 to the cyclone space 14 for dust and gas separation, and the separated dust falls into the dust collection space 12 at the bottom of the dust cup 1, The separated air runs downstream and is filtered by the mesh cover 4 before being discharged.

In this embodiment, the mesh cover 4 is preferably arranged below the cyclone cover 2 , and the cyclone cover 2 is also formed with an air return port 23 . In other embodiments, the mesh cover can also be arranged above the cyclone cover or at other positions, and the separated air is directly filtered and discharged through the mesh cover without passing through the cyclone cover, and the specific structure is not limited.

Further, the bottom of the cyclone cover 2 protrudes downward with a wind-shielding rib (not shown) for preventing the hair from wrapping around the outer wall of the air inlet duct, and the wind-shielding rib is vertically arranged on the path of the dust spiraling. The dust and hair running in the cyclone space can stop running under the blocking of the windshield and then fall down to the bottom of the dust cup, so as to avoid the entanglement of the hair after rotation, which is convenient for subsequent cleaning of the interior of the dust cup.

Preferably, the wind shield is arranged at the air outlet 22 of the cyclone hood, so that the dust entering the cyclone space from the air outlet 22 of the cyclone hood first passes through the wind shield and then spirals downward into the bottom of the dust cup. In addition, ventilation holes can be formed on the windshield. By setting the ventilation holes, the windshield can block the rotation of dust and hair, and at the same time, it can facilitate the passage of air flow, without affecting the performance and suction of the whole machine, and effectively improve the separation efficiency.

Further, the top of the dust cup 1 is provided with a filter cotton (not shown), and the air discharged through the air return port is further filtered at the filter cotton and then discharged out of the body.

Further, the air inlet 11 disclosed in the present invention is preferably elliptical, and the bottom of the air inlet duct 3 is an elliptical structure matching the air inlet 11 of the dust cup, which satisfies the effective connection between the air inlet duct 3 and the air inlet at the bottom of the dust cup 1 . In other embodiments, the shape of the bottom of the air inlet duct may be changed correspondingly according to the shape of the air inlet, which is not specifically limited.

The top of the air inlet duct 3 is a circular structure to facilitate the formation of a cyclone.

In addition, the diameter of the air inlet duct 3 gradually increases from bottom to top. On the one hand, the air inlet duct is gradually increased from the air inlet to the air outlet, which is convenient for the entry of dust. On the other hand, due to the small diameter of the bottom of the air inlet duct, the occupation of the dust collection space is reduced, and the dust storage space of the dust cup is effectively increased.

The working principle of the present invention is as follows:

The dust enters the air inlet duct 31 from the air inlet 11, and runs upwards into the cyclone air duct 21, where it is reversed in the cyclone air duct 21 to form a spiral airflow, and the spiral airflow runs from the cyclone hood outlet 22 to the cyclone space 14. The dust and gas are separated, the separated dust falls into the dust collecting space 12 at the bottom of the dust cup 1, and the separated air runs downstream after being filtered by the mesh cover and then runs downstream through the return air outlet 23, and finally discharged through the filter cotton.

Example 2

As shown in FIG. 7 , the rest are the same as in Embodiment 1, except that the top of the air inlet duct 3 extends into the cyclone hood 2, and a cyclone duct is formed between the inner wall of the cyclone hood 2 and the outer wall of the air inlet duct 3, and the air inlet duct 3 The part inside the cyclone hood is provided with an air outlet 32 , and the cyclone hood 2 is provided with an air outlet 22 of the cyclone hood which communicates with the cyclone space 14 , and the air outlet 32 and the air outlet 22 of the cyclone hood are arranged in dislocation.

Preferably, a spiral air guide rib (not shown) is integrally formed in the cyclone hood 2, and the dust discharged from the air outlet 32 can be more conducive to forming a cyclone through the guiding action of the spiral air guide rib and improve the dust and air separation efficiency.

Further, the air outlet 32 is set higher than the air outlet 22 of the cyclone cover, and the air outlet is relatively arranged at the top position of the air inlet duct 3, so that the dust discharged through the air outlet 32 can realize a spiral from top to bottom. operation, increase the path of dust and gas spiral operation, and achieve dust and gas separation as much as possible.

In addition, it is preferable to dispose the air outlet 32 opposite to the air outlet 22 of the cyclone hood. The dust discharged from the air outlet needs to be rotated at least 180 degrees and then run to the air outlet of the cyclone hood, so as to prevent the dust from being discharged from the air outlet and run directly from the air outlet of the cyclone hood to the cyclone space, which is convenient for the formation of cyclone and improves the dust air. separation efficiency.

To sum up, in the dust-gas separation device disclosed in the present invention, an air inlet duct is formed at the center of the dust cup to form an air inlet air duct, so that the dust gas enters directly from the air inlet air duct in the center of the dust cup, and there is no multiple inlet air duct. Wind reversing reduces the loss of air volume, which is more conducive to ash throwing, and improves the performance and suction of the whole machine.

And because the air inlet air duct is located in the center, the inside of the dust cup is still a circular structure, which is convenient for the formation of cyclone, improves the dust and gas separation efficiency, and increases the dust storage capacity of the dust cup.

The above description of the disclosed embodiments enables 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 implemented in 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. A dust-gas separation device, comprising a dust cup and a cyclone arranged inside the dust cup, a cyclone space is formed between the cyclone and the dust cup, and it is characterized in that, the bottom of the dust cup forms an air inlet that communicates with the outside , an air inlet duct is arranged at the center of the dust cup, one end of the air inlet duct is connected to the air inlet and sealed, and the other end extends upward to the cyclone, and the cyclone includes a cyclone cover and a net cover , the mesh cover is arranged below the cyclone cover, and the cyclone cover is formed with a spiral cyclone duct and a return air channel that are isolated from each other, and the cyclone air duct and the return air channel are respectively provided with a cyclone cover air outlet And the return air outlet, the dust gas is reversed in the cyclone air duct to form a spiral air flow, the spiral air flow is discharged from the air outlet of the cyclone hood and runs to the cyclone space between the cyclone and the dust cup to separate the dust and gas, and the separated dust falls into the bottom of the dust cup. , the separated air runs downstream and is filtered by the mesh cover, and the filtered air is discharged through the return air outlet of the return air passage in the cyclone cover. 2 . The dust and gas separation device according to claim 1 , wherein the inlet of the cyclone duct is located in the middle of the cyclone cover, and communicates with the top of the air inlet duct, and the cyclone duct has an opening. The outlet communicates with the air outlet of the cyclone cover. 3 . The dust and gas separation device according to claim 2 , wherein a pipe is extended downward from the middle of the cyclone cover, and the bottom of the pipe is butted with the top of the air inlet duct. 4 . 4 . The dust and gas separation device according to claim 1 , wherein the top of the air inlet duct extends into the cyclone cover, and a cyclone air duct is formed between the inner wall of the cyclone cover and the outer wall of the air inlet duct, 5 . A part of the air inlet tube located in the cyclone hood is provided with an air outlet, and the air outlet and the air outlet of the cyclone hood are arranged in a dislocation. 5 . The dust and gas separation device according to claim 4 , wherein the air outlet is arranged higher than the air outlet of the cyclone hood, and the air outlet is arranged opposite to the air outlet of the cyclone hood. 6 . 6. The dust-gas separation device according to any one of claims 2-5, wherein an air inlet duct is formed in the air inlet duct, and the dust enters the air inlet duct from the air inlet, and runs upward to Inside the cyclone. 7 . The dust and gas separation device according to claim 1 , wherein the bottom of the air inlet duct is an oval structure matched with the air inlet of the dust cup, and the top of the air inlet duct is a circular structure, so the The diameter of the air inlet duct gradually increases from bottom to top. 8 . The dust and gas separation device according to claim 1 , wherein the bottom of the dust cup can be rotated to open, and one end of the air inlet duct is detachably connected to the bottom of the dust cup. 9 . 9. A vacuum cleaner, characterized in that it comprises the dust-gas separation device according to any one of claims 1-8.

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