CN102525350B - Vacuum cleaner - Google Patents

Abstract

The invention discloses a vacuum cleaner, which comprises a mechanical separation device and at least one cyclone type separation device arranged downstream of the mechanical separation device, wherein a belt is arranged below the dust inlet in the inner cavity of the separation dust collection bucket. The partition with through holes divides the inner cavity of the separation dust collection bucket into an upper chamber and a lower chamber which are in airflow communication, and a plurality of baffles are arranged in the lower chamber, and the dust-laden airflow enters the inner cavity of the separation dust collection bucket The middle and rear enter the lower chamber through the through hole, and stall after violent impact with the baffle, so that many dusts with large masses can be effectively separated and controlled in the mechanical separation device, while fine dust is in the Cyclone separation is carried out in the downstream cyclone separation device, which greatly improves the overall dust separation effect of the vacuum cleaner and greatly improves the overall performance of the vacuum cleaner.

Description

vacuum cleaner

technical field

The present invention relates to a vacuum cleaner.

Background technique

On the known cyclone type dust bagless vacuum cleaner, there are generally two kinds of cyclone filter systems. The first is usually to build an additional filter in the cyclone dust bucket as the first stage filter system, such as a HEPA filter to filter dust. The characteristic of this system is that a large amount of first-hand dust enters the dust bucket with the airflow and directly rotates around the HEPA filter. Due to the poor effect of the first-stage cyclone separation, the dust cannot be effectively separated and controlled. It spins up and down continuously with the airflow in the cyclone dust bucket, and finally it is easily sucked through the central suction force of the HEPA filter and attached to the HEPA filter, and the HEPA filter has a high filtration level and can filter The net is easily blocked by dust, so that the suction power of the vacuum cleaner drops quickly, causing users to have to clean or replace the filter frequently, which affects the normal use of the vacuum cleaner. Therefore, this kind of vacuum cleaner is constantly being replaced by the second multi-stage cyclone vacuum cleaner.

The second type is the so-called multi-stage cyclone vacuum cleaner, which performs multi-stage cyclone separation of dust by setting multi-stage cyclone separation units in series, so that the dust can be completely left in the separation unit of the vacuum cleaner. DYSON (Dyson/UK), currently the leader in cyclone vacuum cleaners, has adopted the above-mentioned design. However, in actual use, it is found that the first-stage cyclone filter often cannot centrifuge the dust efficiently and effectively control the dust, perhaps due to the limitation of the size of the household vacuum cleaner and the problem of structural design. This is mainly due to the fact that as a cyclone filter, its working principle is to use the principle of centrifugal force to separate particles heavier than air from the air during high-speed rotation. To achieve this goal, there are two main points: one is to rotate at a high speed, that is, the dust rotates at a high speed with the airflow, so that the dust particles are farther and farther away from the center of attraction as the speed increases. The second is that the particles must be far enough away from the center of the suction force so that the particles can escape. If the speed is fast, but cannot reach a sufficiently far point, that is to say, if the particle is not far enough from the center of the suction force, it still can only rotate at high speed with the airflow. In this way, according to the centrifugal separation effect of the cyclone-separated dust bucket of the household vacuum cleaner, the larger the diameter, the better, and the higher the height, the better. However, limited by the size of the vacuum cleaner, the diameter cannot be very large, and if the diameter is large, the rotation speed will be reduced and the centrifugal effect will be worse, so the diameter cannot be very large, which can only increase the height of the cyclone separation dust bucket of the vacuum cleaner. On the vacuum cleaner, the suction mechanism is generally set above the vacuum cleaner. The higher the height of the cyclone separation dust bucket, the longer the bottom of the dust bucket, so that the separation effect is better. If there is not enough length space below for the dust particles to reach an escape If the critical point is reached, the dust cannot leave the swirling airflow. The dust barrel is surrounded by barrel walls, the dust cannot escape, and near the suction center, there is a high-speed rotating air flow, and the dust cannot be separated. The dust-laden airflow must go down, and it must be rotated downward at a high speed, so that particles of different weights can escape from the rotating airflow at different critical points from the center of the suction force.

Therefore, theoretically speaking, the greater the cyclone speed, the longer the bottom of the dust bucket, and the cleaner and more thorough the separation of dust particles. The actual situation is that the airflow of the vacuum cleaner enters at a very high speed, and the length of the bottom of the dust bucket cannot be very long. The dust bucket is filled with high-speed rotating airflow, and the high-speed rotating airflow will drive the quiet dust again at any time, that is, dust can not stop. Especially light and thin, such as paper, fiber fluff, hair, etc., the most common dust in the home now often rotates with the airflow, and finally attaches to the filter screen set in front of the next-level cyclone filter, resulting in a decrease in the suction of the vacuum cleaner, or entering the next level. The first-stage filtration system increases the burden on the next-stage filtration system, and therefore the multi-stage cyclone system cannot effectively and efficiently filter out as much dust as possible. For example, the Chinese patent "multi-cyclone dust separation equipment for vacuum cleaner" with the publication number CN101292851 discloses the vacuum cleaner that cannot effectively separate dust as mentioned above, and the dust after being separated by the first-stage cyclone separator After falling into the bottom of the cyclone separator, a small part of the dust will be entrained to the mesh filter with the updraft due to the lack of shelter, which will not only reduce the separation efficiency of the first-stage cyclone separator , and because the dust particles of the entrained dust are generally large, the mesh of the mesh filter will be blocked, so that the entire vacuum cleaner cannot work normally. Others also have the above problems in the cyclone vacuum cleaners described in CN1422187A and CN100998484A as the publication numbers.

Contents of the invention

The purpose of the present invention is to overcome the disadvantages of the prior art and provide a vacuum cleaner with better dust separation effect.

In order to achieve the above object, the technical solution adopted by the present invention is: a vacuum cleaner, comprising a mechanical separation device and at least one cyclone separation device arranged downstream of the mechanical separation device, the mechanical separation device includes a bottom end A closed separated dust collecting barrel with an inner cavity, the separated dust collecting barrel is provided with a dust inlet and a first air outlet, and the inner cavity of the separated dust collecting barrel is provided with a partition with a through hole , the partition divides the inner chamber into an upper chamber and a lower chamber, the partition and the bottom end of the separation dust bucket form the lower chamber, the upper chamber, the The lower chamber is connected through the through hole, the dust inlet is opened on the circumferential side wall of the separated dust collection bucket above the partition, and a plurality of baffles are arranged in the lower chamber .

Preferably, the separated dust collection barrel includes a barrel body with an inner cavity open at both ends, and a bottom cover is detachably connected to the bottom of the barrel body, and the partition plate and the bottom cover form the lower chamber.

Further preferably, the plurality of baffles are fixedly connected and arranged on the circumferential side wall of the separated dust collecting bucket or on the bottom cover.

Preferably, the upper surface of the separator is a downwardly diverging conical surface.

Further preferably, the through hole is located at the intersection of the partition and the inner wall of the separated dust collection bucket.

As a specific implementation manner, there are at least two through holes.

Preferably, a mesh filter is arranged upstream of the first air outlet in the inner cavity of the separated dust collecting bucket, the mesh filter is cylindrical, and the mesh filter is connected to the Separate the coaxial setting of the dust collection bucket.

Further preferably, a first guide rib is fixedly connected to the outer wall of the mesh filter, and the first guide rib extends along the axial direction of the mesh filter and along the Bending in the circumferential direction, the first guide rib is arranged to be attached to the inner wall of the separation dust bucket, the dust inlet is arranged opposite to the inner side of the first guide rib, and the outer side of the mesh filter The wall is also fixedly connected with a second guide rib, the second guide rib is obliquely arranged on the outside of the first guide rib, and the inclined direction of the second guide rib is the same as that of the dust inlet entering the dust inlet. The direction of rotation of the dust-laden airflow in the inner chamber of the separation dust-collecting bucket is consistent.

Still further preferably, the inclined angle of the second guide rib along the axial direction of the mesh filter is 45°-60°.

Preferably, the cyclone separation device includes one or more cyclone buckets arranged side by side, the cyclone bucket is in airflow communication with the separation dust collection bucket, and the bottom of the cyclone separation device is provided with a A core barrel connected to the lower chamber, the upper and lower ends of the core barrel are respectively arranged in sealing connection with the bottom of the cyclone separation device and the bottom of the separation dust collection barrel.

Due to the application of the above-mentioned technical solution, the present invention has the following advantages compared with the prior art: the inner chamber of the separated dust-collecting bucket is separated by a partition plate with a through hole located below the dust inlet in the inner cavity of the separated dust-collecting bucket It is divided into an upper chamber and a lower chamber which are in communication with each other, and by setting a plurality of baffles in the lower chamber, an effective dust beating and separating device is formed to mechanically separate the dust-laden airflow. The dust-laden airflow enters the inner cavity of the separation dust collection barrel and rotates from the upper part to the lower part in the upper chamber. The baffle stalls after a violent impact, the dust falls to the bottom of the lower chamber and separates from the airflow, the airflow slows down and its rotational movement is destroyed, and flows smoothly from another through hole to the first air outlet, which makes many The dust with larger mass can be effectively separated and controlled in the mechanical separation device, while the fine dust is cyclone-separated in the downstream cyclone separation device, which greatly improves the overall dust separation effect of the vacuum cleaner. Greatly improve the overall performance of the vacuum cleaner.

Description of drawings

Accompanying drawing 1 is the exploded schematic view of vacuum cleaner of the present invention;

Accompanying drawing 2 is the perspective structural representation of vacuum cleaner of the present invention;

Accompanying drawing 3 is the main sectional view of the vacuum cleaner of the present invention.

Among them: 1. Mechanical separation device; 11. Separate dust collection bucket; 12. Dust inlet; 13. Partition; 14. Through hole; 15. Block; 16. Bottom cover; 17. Mesh filter; 18 1, the first guide rib; 19, the second guide rib; 110, the first air outlet; 2, the cyclone separation device; 21, the cyclone barrel; 22, the air inlet distributor; 23; the core barrel.

Detailed ways

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Referring to Fig. 1-3, a vacuum cleaner includes a mechanical separation device 1, the mechanical separation device 1 includes a separation dust collection bucket 11 with a closed bottom end and an inner cavity, and the circumferential side of the separation dust collection bucket 11 is The wall is provided with a dust inlet 12 connected with the inner cavity of the bucket, and the top is provided with a first air outlet 110, and the dust-laden air flow enters the inner cavity of the separation dust collection bucket 11 from the dust inlet 12, and is separated from the dust by the cyclone. The first air outlet 110 flows out. The separated dust collecting barrel 11 includes a barrel body with an inner chamber open at both ends and a bottom cover 16 detachably connected to the bottom thereof, and the bottom cover 16 is sealedly connected with the barrel body. A partition 13 is arranged in the inner cavity of the separation dust collection bucket 11, and the partition 13 is located below the dust inlet 12. The partition 13 divides the inner cavity of the separation dust collection bucket 11 into two parts, an upper chamber and a lower chamber. , wherein the part formed between the bottom end of the separation dust collecting barrel 11 and the partition 13 is the lower chamber, that is, the part between the bottom cover 16 and the partition 13 is the lower chamber, and the lower chamber is the machine The dust collection room of type separation device 1. The upper surface of the partition 13 is a tapered surface that diverges downward, and a plurality of through holes 14 are opened on the partition 13 , and the upper chamber and the lower chamber are communicated through the through holes 14 . Here, there are two through-holes 14 , and the two through-holes 14 are located at the intersection of the partition plate 13 and the inner wall of the separated dust-collecting barrel 11 . A plurality of baffles 15 are also provided in the lower chamber, and these baffles 15 can be arranged on the circumferential side wall of the separated dust collecting bucket 11 , or on the upper surface of the bottom cover 16 . In this way, the dust-laden air flows through the dust inlet 12 and enters the inner cavity of the separation dust collection bucket 11 and then rotates on the upper part of the separation dust collection bucket 11. When it rotates to the partition 13, it flows into the bottom from a through hole 14. chamber. The dusty airflow enters the lower chamber and continues to rotate downwards in the lower chamber. When it touches the baffle 15, it stalls rapidly, and the dust in the dusty airflow falls down quickly because of the violent collision stall, and falls to the bottom of the lower chamber. Because the dividing plate 13 has separated the central suction force that the first air outlet 110 on the separation dust collecting barrel 11 has, the dust-laden air flow has just lost the central suction power after entering the lower chamber at the bottom of the dividing plate 13, and then with the baffle Sheets 15 collide with each other, and the dust-laden airflow also loses the kinetic energy of rotation or dancing, so it quickly quiets down in the lower chamber, and the dust in the airflow also quickly falls into the bottom of the lower chamber due to reasons such as collision stall and its own gravity, and It is not easy to be motivated again. In this way, the dust-laden airflow is mechanically separated in the mechanical separation device 1, and the dust with a larger mass is separated, and the separated dust is also controlled in the lower chamber. Due to the limited space in the lower chamber, the airflow entering the lower chamber will flow upward in reverse, and the dust-laden airflow after mechanical separation is sucked back to the upper chamber of the separated dust collecting bucket 11 through another through hole 14 .

Referring to Figures 1-3, in this embodiment, a mesh filter 17 is arranged upstream of the first air outlet 110 in the cavity of the separation dust collecting bucket 11, the mesh filter 17 is cylindrical, and The mesh filter 17 is coaxially arranged with the separation dust collection barrel 11, and the dust-containing airflow is mechanically separated in the inner cavity of the separation dust collection barrel 11, and then filtered through the mesh filter 17 and then flows out of the machine from the first air outlet 110. type separation device 1. The outer wall of the mesh filter 17 is fixedly connected with a first guide rib 18, the first guide rib 18 extends along the axial direction of the mesh filter 17 and bends along the circumferential direction of the mesh filter 17, the first guide rib 18 A guide rib 18 is fitted to the inner wall of the separation dust collecting barrel 11, and the dust inlet 12 is arranged opposite to the inner side of the first guide rib 18, that is, the dust inlet 12 should be arranged on the side where the first guide rib 18 is bent and formed. The inner side of the edge, so that the inner chamber of the separated dust collecting bucket 11 is separated at the dust inlet 12, and when the dust-laden air flow enters the inner cavity of the separated dust collecting bucket 11 from the dust inlet 12, it can only be separated from the dust collecting bucket 11. One end that blocks enters, and then rotates around one direction in the separation dust collection barrel 11, avoiding the dust-laden airflow entering the separation dust collection barrel 11 and being scattered around in its inner cavity. On the outer wall of the mesh filter 17, a second guide rib 19 is also fixedly connected. The rotation direction of the dust-laden airflow in the inner cavity of the dust-collecting barrel 11 from the dust inlet 12 is consistent, and the angle of the second guide rib 19 inclined along the axial direction of the mesh filter 17 is 45°-60°. After such setting, The dust-laden airflow rotates in one direction in the inner cavity of the separation dust-collecting bucket 11. When it rotates to the second guide rib 19, the dust-laden airflow gradually advances downward along the inclined direction of the second guide rib 19, so that Quickly reach the upper surface of the partition plate 13 and enter the lower chamber through the through hole 14, so that the dust separation efficiency of the mechanical separation device 1 is improved.

Referring to Figures 1-3, in this embodiment, the vacuum cleaner also includes a cyclone separation device 2 located downstream of the mechanical separation device 1, and the cyclone separation device 2 includes one or more cyclone barrels arranged side by side 21. The cyclone bucket 21 is arranged in airflow communication with the separation dust collection bucket 11. There are 5 here, and the axis lines of these 5 cyclone buckets 21 are parallel to each other, and there is also a separate dust collection bucket 11 and cyclone bucket 21 between the upstream of the cyclone bucket 21 and the downstream of the first air outlet 110. The air inlet distributor 22 connected by airflow can divide the dust-containing airflow flowing from the first air outlet 110 to the cyclone separation device 2 into multiple strands, and the number of strands is the same as the number of cyclone barrels 21 . A core barrel 23 that can communicate with the lower chamber is also arranged at the bottom of the cyclone type separation device 2, and the upper and lower ends of the core barrel 23 are respectively sealed and connected with the bottom of the cyclone type separation device 1 and the bottom of the separation dust collection bucket 11 Set, like this, after the dust-containing airflow is cyclone-separated in the cyclone bucket 21, the dust falls into the bottom through the core bucket 23, and the bottom of the core bucket 23 is the dust collection chamber of the cyclone type separation device 2.

The working process of the vacuum cleaner of the present embodiment is set forth below in detail:

The dust-laden airflow enters the inner chamber of the separated dust-collecting bucket 11 from the dust inlet 12 and rotates in a specific direction in the inner chamber of the separated dust-collecting bucket 11, and travels rapidly downwards to the The dust-laden airflow rotates along the upper surface of the partition 13 and enters the lower chamber from a through hole 14 . When designing, the distance between the partition 13 and the dust inlet 12 should be relatively small, so that the dust-laden airflow entering the inner cavity of the separation dust collection bucket 11 can quickly reach the partition 13, thereby quickly entering the lower part through the through hole 14. chamber, to prevent the airflow from rotating and staying in the upper chamber, so as to prevent it from being sucked to the cyclone separation device by the central suction force and increase its burden, which will eventually lead to insufficient overall suction force of the vacuum cleaner and affect the dust collection effect of the vacuum cleaner. Therefore, the dust-laden airflow often enters the lower chamber without any separation of dust and gas in the upper chamber, and the dust-laden airflow enters the lower chamber and runs downward by inertia. The sheet 15 collides fiercely, and the dust in the dust-laden airflow stalls rapidly and falls down in the fierce collision, and falls to the bottom of the lower chamber, and the airflow is also separated from the central suction of the center of the upper chamber of the dust collection bucket by the partition 13. Force, the airflow also loses the inertial rotation force after violent collision with the baffle 15, so it no longer rotates in the lower chamber and maintains a relatively quiet flow state in the lower chamber, so it will not drive the dust at the bottom of the lower chamber Spin, the dust is scattered and stays quietly at the bottom of the lower chamber. Due to the limited space in the lower chamber, the above-mentioned airflow will gradually enter the upper chamber from another through hole 14. If a small part of the entrained dust returns to the upper chamber, it will be filtered by the mesh filter 17. , and then from the first air outlet 110 through the air inlet distributor 22, it is divided into a plurality of cyclone barrels 21 of the cyclone type separation device 2 to be divided into multiple airflows to carry out cyclone separation again, and the dust after separation falls into the bottom of the core barrel 23, and the The clean air after cyclone separation by the bucket 21 will gather at the top of the cyclone bucket 21 and be discharged from the air outlet provided on the top cover of the vacuum cleaner.

The above-mentioned embodiments are only to illustrate the technical conception and characteristics of the present invention. Substantial equivalent changes or modifications shall fall within the protection scope of the present invention.

Claims (5)

1. a vacuum cleaner, comprise that mechanical type separator and at least one are arranged on the Cyclonic separating apparatus in described mechanical type separator downstream, described mechanical type separator comprises the separation dust collector bucket with inner chamber of bottom sealing, on described separation dust collector bucket, offer dust inlet and the first air outlet, it is characterized in that: in the described inner chamber of described separation dust collector bucket, be provided with the dividing plate with through hole, described inner chamber is separated into upper chamber and lower chambers by described dividing plate, the described bottom of described dividing plate and described separation dust collector bucket forms described lower chambers, described upper chamber, described lower chambers is connected by described through hole, described dust inlet is opened in the circumferential side wall that described separation dust collector bucket is positioned at described dividing plate top, in described lower chambers, be provided with multiple catch, described separation dust collector bucket comprises the staving with inner chamber of both ends open, the bottom of described staving is removably connected with a bottom, between described dividing plate and described bottom, form described lower chambers, described multiple catch is permanently connected and is arranged in the circumferential side wall of described separation dust collector bucket or on described bottom,

The provided upstream that is positioned at described the first air outlet in the described inner chamber of described separation dust collector bucket is equipped with mesh filter, described mesh filter is cylindrical, described mesh filter and described separation dust collector bucket coaxially arrange, on the lateral wall of described mesh filter, be permanently connected and be provided with the first guiding rib, described the first guiding rib along described mesh filter extend axially and along the circumferential bending of described mesh filter, the inwall of described the first guiding rib and described separation dust collector bucket is fitted, the inner side of described dust inlet and described the first guiding rib is oppositely arranged, on the lateral wall of described mesh filter, be also permanently connected and be provided with the second guiding rib, described the second guiding rib is arranged on the outside of described the first guiding rib obliquely, the direction that described the second guiding rib tilts with entered the described inner chamber of described separation dust collector bucket by described dust inlet in the rotation direction of dust-contained airflow consistent, described the second guiding rib is 45 °～60 ° along the angle of the axioversion of described mesh filter.

2. vacuum cleaner according to claim 1, is characterized in that: the upper surface of described dividing plate is the taper surface of dispersing downwards.

3. vacuum cleaner according to claim 1 and 2, is characterized in that: the inwall that described through hole is positioned at described dividing plate and described separation dust collector bucket connects place.

4. vacuum cleaner according to claim 3, is characterized in that: described through hole has two at least.

5. vacuum cleaner according to claim 1, it is characterized in that: described Cyclonic separating apparatus comprises one or more whirlwind buckets that are arranged side by side mutually, described whirlwind bucket and described separation dust collector bucket phase airflow connection, the bottom of described Cyclonic separating apparatus is provided with a core bucket that can be connected with described lower chambers, the upper and lower end parts of described core bucket respectively with the setting that is tightly connected mutually of the bottom of the bottom of described Cyclonic separating apparatus, described separation dust collector bucket.