WO2008011797A1 - Vide-poussière secondaire à séparation cyclonique pour aspirateur - Google Patents

Vide-poussière secondaire à séparation cyclonique pour aspirateur Download PDF

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Publication number
WO2008011797A1
WO2008011797A1 PCT/CN2007/002105 CN2007002105W WO2008011797A1 WO 2008011797 A1 WO2008011797 A1 WO 2008011797A1 CN 2007002105 W CN2007002105 W CN 2007002105W WO 2008011797 A1 WO2008011797 A1 WO 2008011797A1
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WO
WIPO (PCT)
Prior art keywords
air inlet
cylinder
cup
vacuum cleaner
dust cup
Prior art date
Application number
PCT/CN2007/002105
Other languages
English (en)
French (fr)
Inventor
Weiguo Lang
Original Assignee
Wang, Yuedan
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CNB2006100525823A external-priority patent/CN100407977C/zh
Priority claimed from CN 200710067453 external-priority patent/CN101015438A/zh
Application filed by Wang, Yuedan filed Critical Wang, Yuedan
Priority to EP07764013A priority Critical patent/EP2044875A1/en
Priority to US12/374,544 priority patent/US20090282791A1/en
Priority to AU2007278711A priority patent/AU2007278711A1/en
Publication of WO2008011797A1 publication Critical patent/WO2008011797A1/zh

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D45/00Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/12Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1608Cyclonic chamber constructions
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1616Multiple arrangement thereof
    • A47L9/1625Multiple arrangement thereof for series flow
    • A47L9/1633Concentric cyclones
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/165Construction of inlets
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1683Dust collecting chambers; Dust collecting receptacles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04CAPPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00Apparatus in which the axial direction of the vortex is reversed
    • B04C5/02Construction of inlets by which the vortex flow is generated, e.g. tangential admission, the fluid flow being forced to follow a downward path by spirally wound bulkheads, or with slightly downwardly-directed tangential admission
    • B04C5/04Tangential inlets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04CAPPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00Apparatus in which the axial direction of the vortex is reversed
    • B04C5/12Construction of the overflow ducting, e.g. diffusing or spiral exits
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04CAPPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00Apparatus in which the axial direction of the vortex is reversed
    • B04C5/24Multiple arrangement thereof
    • B04C5/26Multiple arrangement thereof for series flow

Definitions

  • the present invention relates to a vacuum cleaner manufacturing technique, and more particularly to a centrifugal cleaner air and dust separation device. Background technique
  • vacuum cleaners are widely used in the market to separate air and dust.
  • centrifugal vacuum cleaners with only a single-stage separation device generally have poor separation effect, and fine dust is easily discharged with air to cause secondary pollution. .
  • the application number I applied for is "200510049880. 2", "Integrated two-part vacuum cleaner dust cup", which uses dusty air to enter from the tangential direction of the dust cup. After a cyclone separation, it is deposited on the bottom of the dust cup. In the dust chamber, fine dust enters from the air inlet of the separator consisting of the rotating array of blades, and is separated by cyclone again. The dust is deposited on the outer tube of the separator and the inner dust chamber connected to the bottom of the short tube.
  • the two separate vacuum cleaner dust cups have been greatly improved compared with the prior art, but a small amount of fine dust is adsorbed on the filter plate of the dust cup air outlet with the air, and after being used for many times, in the filter sheet The accumulation of fine dust is gradually increasing, resulting in a decrease in the working efficiency of the vacuum cleaner and affecting the dust suction effect.
  • vacuum cleaner vacuum cup In order to further improve the separation effect of air and dust, I have repeatedly studied and designed a vacuum cleaner vacuum cup with better separation effect.
  • the application number is "200620101407. 4", "vacuum cleaner cyclone type dust cup", which uses air and After the dust enters from the tangential direction of the dust cup, the dust is deposited on the dust collecting chamber at the bottom of the dust cup by a cyclone, and then separated by the secondary cyclone of the plurality of spiral pieces and the rotating blades in the separator, and the fine dust is separately deposited in the isolation.
  • the bottom dust collecting chamber at the bottom of the extension tube and the bottom dust collecting chamber connected to the inner tube and the outer tube.
  • the dust separated by two or three times is deposited in the dust collecting chambers disposed at different positions inside the dust cup. They seem to be deeply hidden in the labyrinth of the dust cup, so the dust is dumped after use. It is very troublesome to clean. The parts in the dust cup must be taken out one by one, and the dust in the dust collecting chamber should be dumped one by one, which causes trouble for the user to use and clean. Moreover, there are many internal components in the dust cup, and the manufacturing process is relatively complicated. Furthermore, there are three dust collecting chambers that need to occupy a certain space for three separations. The height of the cup must be increased to achieve the desired separation effect. Therefore, the above two types of dust cups are more suitable. For vertical vacuum cleaners, it is necessary to provide a cyclone separation device with a more significant separation effect for a horizontal vacuum cleaner with a relatively short profile.
  • the existing dust cups generally have a drawback, that is, the vacuum cleaner tends to suck the fine dust when it is restarted after the intermittent operation, so that the fine dust is sucked up and attached to the filter, which will increase over time.
  • Motor load affecting the dust suction effect, in order to overcome the above defects, people often use the method of increasing the height between the bottom of the separator and the dust collecting chamber of the dust cup to prevent the fine dust from sucking and increasing the capacity of the dust collecting chamber, but the separation is installed.
  • the dust cups of the device are relatively high, which increases the size and manufacturing cost of the vacuum cleaner. Summary of the invention
  • the object of the present invention is to provide a vacuum cleaner dust cup with better structure, convenient cleaning, low manufacturing cost, remarkable dust collecting effect, and better separation effect for the horizontal vacuum cleaner. And the separation effect is good, the volume is small, and it is not easy to produce fine dust sucking, to meet the development and manufacture of various vacuum cleaner products.
  • a secondary cyclone type dust cup for a vacuum cleaner comprising a cup body, a dust cup air outlet opening on the cup body, a dust cup air inlet tangential to the peripheral wall of the cup body, and a separator disposed in the cup body, the separating
  • the outer cylinder body is provided with a separator air inlet opening below the air inlet of the dust cup, and a partition cover is arranged below the air inlet of the separator, and the bottom of the outer cylinder body is connected with the isolation cover, and the top of the outer cylinder body
  • the connection bracket is connected to the support body, and the connection bracket is supported on the cup body.
  • the outer cylinder body is provided with an inner cylinder body coaxially disposed, and an inner cylinder air inlet opening is provided at an upper portion of the inner cylinder body and above the air inlet of the separator, the inner cylinder
  • the top of the body is connected with the connecting bracket, and the lower part thereof passes through the isolation cover, and the air inlet of the dust cup communicates with the air outlet of the dust cup through the air inlet of the separator and the air inlet of the inner cylinder.
  • the inner wall of the inner cylinder is provided with a conical cylinder with a large upper and lower sides, and the bottom of the conical cylinder has a certain distance from the bottom of the inner cylinder to form an inner dust collecting chamber.
  • the bottom of the conical cylinder is provided with an isolation pocket, and a part of the peripheral wall of the isolation pocket is connected to the outer wall of the conical cylinder through a connecting rib, and an annular gap is formed between the inner wall of the isolation pocket and the outer wall of the conical cylinder.
  • the air inlet of the separator is evenly distributed on the circumferential wall of the lower portion of the outer cylinder, and is rectangular or circular.
  • the inner cylinder air inlet includes two or more passages whose axial direction is tangent to the inner cylinder inner wall
  • the inner cylinder air inlet is formed by rotating or evenly arranging a plurality of blades provided on the inner cylinder in an annular array.
  • the bottom of the connecting bracket is provided with a central hole, and a short tube is connected below the short tube.
  • the inner diameter of the short tube is smaller than the inner diameter of the inner cylinder, and the upper edge of the conical cylinder is lower than the lower edge of the short tube.
  • the connecting bracket is integrally formed with the outer cylinder body and the inner cylinder body.
  • the positive progress of the invention is as follows: After the dusty air is separated by the secondary cyclone, the dust falls on the inner and outer dust collecting chambers at the bottom of the dust cup, and the cup lid can be poured and cleaned, which is convenient.
  • the structure is simpler than the prior art, and the manufacturing cost is reduced.
  • the experimentally tested the dust separation effect is more remarkable, and the cup height is suitable for the horizontal vacuum cleaner; because an isolation pocket is connected at the lower end of the conical cylinder of the separator.
  • the method can effectively avoid the phenomenon that the vacuum cleaner sucks the fine dust when the working intermittently stops again when the dust is collected in the dust collecting chamber, thereby improving the vacuuming effect and the service life of the vacuum cleaner.
  • FIG. 1 is a schematic view showing the structure of the present invention, in which arrows indicate the direction of air flow.
  • Figure 2 is a cross-sectional view taken along line A - A of Figure 1;
  • Figure 3 is a perspective view of the inner cylinder of Figure 1.
  • Figure 4 is a perspective view of the separator of Figure 1 connected to a connecting bracket. detailed description
  • a secondary cyclone separation dust cup of a vacuum cleaner comprising a cup body 11 , is formed on a dust cup air inlet 3 tangential to a peripheral wall of the cup body 11 , and is provided in a dust cup covering the cup body Cover the dust cup air outlet 1 and the separator placed in the dust cup.
  • the separator is provided with an outer cylinder 5, and an inner cylinder 12 is coaxially mounted at the center of the outer cylinder 5.
  • the upper portion of the outer cylinder 5 is connected to the connecting bracket 15.
  • the peripheral wall of the lower end of the outer cylinder 5 is provided with a separator air inlet 6 which is lower than the air inlet 3 of the dust cup.
  • the air inlet 6 of the separator can be rectangular, circular and arranged in a uniform circular shape.
  • the connecting bracket 15 has an upper opening and a small opening, and a disc-shaped bottom is provided with a central hole 16, and a short tube 14 is connected below.
  • a flared cover 7 is provided below the air inlet 6 of the separator, and the bottom of the outer cylinder 5 is isolated from the bottom The cover 7 is connected. '
  • the top of the inner cylinder 12 is connected to the connecting bracket 15 and the bottom passes through the insulating cover 7 to the bottom of the dust cup.
  • the connecting bracket 15 is connected to the inner cylinder 12 of the separator and the top of the outer cylinder 5, and is supported on the cup body 11. In the present embodiment, it rests on the cup opening of the dust cup body 11.
  • the inner wall of the inner cylinder 12 is provided with a conical cylinder 10 having a large upper opening and a small lower opening, and the upper edge of the conical cylinder 10 is lower than the lower edge of the short tube 14.
  • the bottom of the conical cylinder 10 is spaced from the bottom of the inner cylinder 12 to form an inner dust collecting chamber 9 at the bottom of the inner cylinder 12.
  • a spacer pocket 18 is attached to the bottom of the conical cylinder 10, and a portion of the peripheral wall of the spacer pocket 18 is joined to the outer wall of the conical cylinder 10 via the connecting rib 19.
  • An annular gap 20 is left between the inner wall of the spacer pocket 18 and the outer wall of the conical cylinder 10, that is, the upper edge radius of the spacer pocket 18 is larger than the radius of the lower edge of the conical cylinder 10, thereby forming the annular gap 20.
  • the upper end of the inner cylinder 12 is provided with an air inlet 2 which is tangential to the peripheral wall and which may be composed of two or more passages whose axial direction is tangent to the peripheral wall of the inner cylinder 12.
  • the air inlet 2 may be formed by rotating the blades 17 in an annular array as shown in Figs.
  • the air inlet 2 at the upper end of the inner cylinder communicates with the air inlet 6 of the lower outer cylinder through an annular gap space 4 between the inner cylinder and the outer cylinder 5 to form an air flow passage.
  • the air duct connected to the air inlet of the electric fan is connected with the air outlet 1 of the dust cup, and the switch is activated. After the motor works, a negative pressure is generated in the dust cup, and the dusty air enters the dust from the air inlet 3 of the dust cup. The inner cavity of the cup.
  • the dust is pushed toward the peripheral wall of the cup 11 by the centrifugal force and the gravity and falls to the outer dust collecting chamber 8 at the bottom of the dust cup. Since the dust that has fallen into the outer collecting chamber 8 due to the isolation of the insulating cover 7 is hardly re-rolled by the influence of the upper spiral airflow, most of the dust is separated.
  • the air of body 12 also produces a swirling airflow. Since the inner diameter of the upper chamber 13 of the inner cylinder 12 is large, it enters the conical cylinder 10 downward. Because the inner diameter of the upper cavity of the conical cylinder 10 is large, the inner diameter of the lower end is small.
  • the wind pressure of this part of the airflow increases, the flow velocity is accelerated, and the centrifugal force again separates a small amount of fine dust mixed in the air, and the fine dust is turned toward
  • the inner wall of the conical cylinder 10 falls to the inner wall of the isolation pocket 18, and the fine dust that is rotated by the inertia is impacted by the airflow, and passes along the inner wall of the isolation pocket 18 through the annular gap between the outer wall of the conical cylinder 10 and the inner wall of the isolation pocket 18.
  • 20 falls to the dust collecting chamber 9 in the bottom of the inner cylinder 12.
  • the air separated twice is guided through the short tube 14 of the center hole 16 of the connecting bracket 15, and enters the electric fan through the dust cup air outlet 1 to be discharged to the cleaner.
  • the separator of the "vacuum cleaner secondary cyclone type dust cup” and the application number "200610049699. 6" and “vacuum cleaner cyclone type dust cup” are respectively assembled in the dust cup of the same horizontal vacuum cleaner, with each suction 50 grams of talcum powder, each time for more than 5 minutes, the vacuum cleaner percentage decreased by a comparative test (down to 60%), the air and dust separation effect of the present invention is significantly improved, as shown in the following table:

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Cyclones (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)

Description

吸尘器二次旋风式分离尘杯 技术领域
本发明涉及一种吸尘器制造技术, 尤其指离心式吸尘器空气与灰尘的分 离装置。 背景技术
目前市场上出售的吸尘器, 多采用离心旋风原理来分离空气与灰尘, 但 是只设单级分离装置的离心式吸尘器, 普遍存在分离效果不佳, 细尘易随空 气排出而造成二次污染的缺陷。
本人申请的申请号为 "200510049880. 2"、 "一体式两次分离的吸尘器尘 杯", 它采用带灰尘的空气从尘杯切线方向进入, 经一次旋风分离后,沉积于 尘杯底部的集尘腔, 细小灰尘又从环状阵列旋转排列的叶片组成的分离器进 风口进入, 再次经旋风分离, 灰尘沉积于分离器的外管与短管底部相连的内 尘腔。 该两次分离的吸尘器尘杯, 虽然较现有技术己有较大的提高, 但仍有 少量细尘末随空气吸附在尘杯出风口的过滤片上, 经多次使用后, 在过滤片 中细尘积聚逐步增多, 以致造成吸尘器的工作效率下降, 而影响吸尘效果。
为了进一步提高空气与灰尘的分离效果, 本人又经多次反复研究, 设计 出分离效果更好的吸尘器尘杯, 申请号为 "200620101407. 4"、 "吸尘器旋风 式尘杯",它采用空气与灰尘从尘杯切线方向进入后,先经一次旋风分离灰尘 沉积于尘杯底部的集尘腔, 再经分离器内多个螺旋片和旋转叶片的二级旋风 分离, 将细小灰尘分别沉积于隔离罩下方的延伸管底部集尘腔和内管和外管 相连的底部集尘腔。
在上述二项专利中, 经二次或三次分离的灰尘都沉落于设置于尘杯内部 不同位置的集尘腔, 它们似乎深藏于尘杯迂回曲折的迷宫中, 所以, 使用后 倾倒灰尘和清洗非常麻烦, 必须将尘杯中的零部件一件件取出, 将集尘腔中 的灰尘逐个倾倒, 给用户使用和清洗带来麻烦。 而且尘杯内部零部件较多, 制造工艺相对较复杂。 再则, 三次分离有三个集尘腔需占一定的空间, 必须 增加杯体的高度, 才能达到理想的分离效果, 因此, 上述二种尘杯比较适用 于立式吸尘器, 所以对于外形比较短的卧式吸尘器, 提供一种分离效果更为 显著的旋风式分离装置很有必要。
并且, 现有的尘杯, 普遍存在一种弊端, 即吸尘器在工作间歇停留后再 次启动时往往会产生细尘倒吸的现象, 使细尘倒吸并附着于过滤器上, 久而 久之即会增加电动机负荷, 影响吸尘效果, 为了克服上述缺陷, 人们往往采 用增加分离器底部与尘杯集尘腔之间高度的办法, 来防止细尘倒吸同时增加 集尘腔容量, 但装这种分离器的尘杯都比较高, 增加了吸尘器的体积和制造 成本。 发明内容
本发明的目的在于针对上述现有技术的缺陷和不足,提供一种结构简单、 清洗方便、 制造成本低, 吸尘效果显著, 尤其能为卧式吸尘器配套使用的分 离效果更好的吸尘器尘杯, 并且分离效果好, 体积小巧、不易产生细尘倒吸, 以满足各类吸尘器产品的开发与制造。
本发明的目的是通过以下技术方案实现的:
一种吸尘器二次旋风式分离尘杯, 它包括杯体, 开设于杯体上的尘杯出 风口, 与杯体周壁相切的尘杯进风口和设于杯体内的分离器, 所述分离器设 有外筒体, 外筒体周壁开有低于尘杯进风口的分离器进风口, 分离器进风口 的下方设有隔离罩, 外筒体底部与隔离罩相连, 外筒体的顶部与连接支架相 连, 连接支架支撑在杯体上, 所述外筒体内设有同轴安置的内筒体, 在内筒 体上部、 分离器进风口的上方开设有内筒体进风口, 内筒体顶部与连接支架 相连, 其下部穿过隔离罩, 尘杯进风口通过分离器进风口和内筒体进风口与 尘杯出风口相通。
其中, 所述内筒体内壁设有上大下小的圆锥形筒体, 圆锥形筒体底部与 内筒体底部有一定间距, 以形成内集尘腔。 该圆锥形筒体底部装有隔离兜, 隔离兜周壁的一部分通过连接筋与圆锥形筒体外壁相接, 隔离兜内壁与圆锥 形筒体外壁间有一环形间隙。
所述分离器进风口均布于外筒体下部的圆周壁上, 为矩形或圆形。
所述内筒体进风口包括二个或二个以上其轴向与内筒体周壁相切的通 道, 或由设在该内筒体上的多个叶片按环状阵列旋转均布排列形成该内筒体 进风口。
所述连接支架底部设有中心孔, 其下方连接一个短管, 该短管内径小于 内筒体内径, 该圆锥形筒体的上沿低于该短管的下沿。
其中, 该连接支架与外筒体和内筒体一体成型。
本发明的积极进步效果在于: 将带灰尘的空气经二次旋风分离后, 其灰 尘都坠落在尘杯底部的内、 外集尘腔, 只要将杯盖打开, 即可倾倒和清洗, 十分方便, 其结构较现有技术更简单, 降低制造成本, 经实验测试, 灰尘分 离效果更显著, 并且杯体高度适用于卧式吸尘器; 由于采用在分离器的圆锥 形筒体下端连接一个隔离兜的方法, 在集尘腔内集有较多灰尘时, 可有效避 免吸尘器在工作间歇停留再次开启时产生细尘倒吸的现象, 从而提高了吸尘 器吸尘效果和使用寿命。 附图说明
图 1是本发明结构示意图, 图中箭头表示气流方向。
图 2是图 1的 A— A剖视图。
图 3是图 1中的内筒体的一种立体图。
图 4是图 1中分离器与连接支架相连后的立体图。 具体实施方式
如图 1所示, 一种吸尘器二次旋风式分离尘杯,包括杯体 11, 开设于杯 体 11周壁与之相切的尘杯进风口 3, 开设于与杯体相盖合的尘杯盖上的尘杯 出风口 1, 以及置于尘杯内的分离器。
如图 1、 4所示, 该分离器设有外筒体 5, 以及在外筒体 5中心同轴安装 有内筒体 12。 外筒体 5的上部与连接支架 15相连。 外筒体 5下端周壁相间 开设有低于尘杯进风口 3的分离器进风口 6, 该分离器进风口 6可呈矩形、 圆形并按均布环状排列。 连接支架 15 上呈上口大下口小、 圆盘状的底部设 有中心孔 16, 其下方连接一个短管 14。
分离器进风口 6的下方设有呈喇叭形隔离罩 7, 外筒体 5的底部与隔离 罩 7连接。 '
内筒体 12 的顶部与连接支架 15相连, 底部穿过隔离罩 7到达尘杯底 部。 该连接支架 15连接分离器的内筒体 12、 外筒体 5的顶部后, 支撑在该 杯体 11上。 在本实施例中, 其搁置于尘杯杯体 11的杯口上。
如图 1所示, 内筒体 12的内壁设有一个上口大、 下口小的圆锥形筒体 10, 该圆锥形筒体 10的上沿低于短管 14下沿。圆锥形筒体 10的底部与内筒 体 12底部有一定的间距, 以形成位于内筒体 12底部的内集尘腔 9。
在圆锥形筒体 10底部装有隔离兜 18, 隔离兜 18周壁的一部分通过连接 筋 19与圆锥形筒体 10的外壁相接。 隔离兜 18内壁与圆锥形筒体 10外壁之 间留有环形间隙 20, 也就是隔离兜 18的上沿半径大于圆锥形筒体 10的下沿 半径, 从而形成该环形间隙 20。
内筒体 12的上端开设有与周壁相切的的进风口 2, 它可以由二个或二个 以上其轴向与内筒体 12周壁相切的通道组成。或者,该进风口 2也可以如图 2、 3所示, 由叶片 17按环状阵列旋转排列组成。
内筒体上端的进风口 2通过内筒体与外筒体 5之间的圆环形间隙空间 4 与下方的外筒体的进风口 6相通, 形成气流通道。
下面结合附图, 叙述它的工作原理。 如图 1所示, 把与电风机进风口相 连的风道与尘杯出风口 1相接, 启动开关, 电机工作后尘杯内产生负压, 带 有灰尘的空气由尘杯进风口 3进入尘杯内腔。
由于尘杯进风口 3轴线与尘杯杯体 11 的圆周面相切, 因而产生旋转气 流。 又由于分离器进风口 6位置低于尘杯进风口位置 3, 因而带有灰尘的空 气进入尘杯后, 即产生向下的螺旋状快速旋风。
灰尘受离心力和重力的作用被甩向杯体 11 的周壁并坠落至尘杯底部的 外集尘腔 8。 由于隔离罩 7的隔离作用落入外集尘腔 8的灰尘很难受到上部 螺旋气流的影响重新卷起, 因此分离出大部分灰尘。
只带少量细小灰尘的空气通过开设于外筒体 5周壁的分离器进风口 6进 入分离器, 由于风压加大, 气流加速, 这部分空气通过内、 外筒体 12、 5之 间的圆环状间隙空间 4从内筒体 12上端的分离器进风口 2进入。
又由于受与内筒体 12周壁相切的分离器进风口 2的导向作用, 进入内筒 体 12的空气同样产生旋转气流。因内筒体 12的上腔 13内径较大, 向下进入 圆锥形筒体 10。 因圆锥形筒体 10上腔内径大, 下端内径小, 根据流体力学 的原理, 这部分气流风压增加, 流速加速, 离心力再次将混于空气中的少量 细尘分离, 并将细尘甩向圆锥形筒体 10的内壁, 并坠落到隔离兜 18内壁, 由于惯性旋落的细尘受气流冲击, 又沿着隔离兜 18内壁通过圆锥形筒体 10 外壁与隔离兜 18内壁间的环形间隙 20坠落至内筒体 12的底部内集尘腔 9。 经两次分离后的空气经连接支架 15的中心孔 16的短管 14导向, 由尘杯出风 口 1进入电风机而排出吸尘器。
用本发明 "吸尘器二次旋风式分离尘杯 " 与 申请号为 "200610049699. 6"、 "吸尘器旋风式尘杯 " 的分离器, 分别装配于同一卧 式吸尘器的尘杯内, 以每次吸 50克滑石粉, 每次吸 5分钟以上, 吸尘器风量 下降百分比进行对比试验 (下降至 60%) , 本发明的空气与灰尘分离效果明 显提高, 如下表所示:
Figure imgf000007_0001

Claims

权 利 要 求 书
1、一种吸尘器二次旋风式分离尘杯,它包括杯体(11 ),开设于杯体(11 ) 上的尘杯出风口 (1 ), 与杯体(11 )周壁相切的尘杯进风口 (3)和设于杯体
( 11 ) 内的分离器, 所述分离器设有外筒体(5), 外筒体(5)周壁开有低于 尘杯进风口 (3) 的分离器进风口 (6), 分离器进风口 (6) 的下方设有隔离 罩(7), 外筒体(5)底部与隔离罩(7) 相连, 外筒体(5) 的顶部与连接支 架 (15) 相连, 连接支架 (15) 支撑在杯体 (11 ) 上, 其特征在于, 所述外 筒体 (5) 内设有同轴安置的内筒体 (12), 在内筒体 (12) 上部、 分离器进 风口(6)的上方开设有内筒体进风口(2), 内筒体(12)顶部与连接支架(15) 相连, 其下部穿过隔离罩 (7), 尘杯进风口 (3) 通过分离器进风口 (6) 和 内筒体进风口 (2) 与尘杯出风口 (1 ) 相通。
2、根据权利要求 1所述的吸尘器二次旋风式分离尘杯, 其特征在于,所 述内筒体(12) 内壁设有上大下小的圆锥形筒体(10), 圆锥形筒体(10)底 部与内筒体 (12) 底部有一定间距, 以形成内集尘腔 (9)。
3、根据权利要求 2所述的吸尘器二次旋风式分离尘杯,其特征在于, 该 圆锥形筒体(10)底部装有隔离兜(18), 隔离兜(18)周壁的一部分通过连 接筋 (19) 与圆锥形筒体 (10) 外壁相接, 隔离兜 (18) 内壁与圆锥形筒体
( 10) 外壁间有一环形间隙 (20)。
4、根据权利要求 1或 2或 3所述的吸尘器二次旋风式分离尘杯,其特征 在于, 所述分离器进风口 (6) 均布于外筒体 (5) 下部的圆周壁上, 为矩形 或圆形。
5、根据权利要求 1或 2或 3所述的吸尘器二次旋风式分离尘杯,其特征 在于, 所述内筒体进风口 (2)包括二个或二个以上其轴向与内筒体(12 )周 壁相切的通道, 或由设在该内筒体 (12) 上的多个叶片 (17) 按环状阵列旋 转均布排列形成该内筒体进风口 (2)。
6、根据权利要求 4所述的吸尘器二次旋风式分离尘杯, 其特征在于, 所 述连接支架 (15)底部设有中心孔 (16), 其下方连接一个短管 (14), 该短 管 (14) 内径小于内筒体 (12) 内径, 该圆锥形筒体 (10.) 的上沿低于该短 管 (14) 的下沿。
7、根据权利要求 5所述的吸尘器二次旋风式分离尘杯, 其特征在于, 所 述连接支架 (15)底部设有中心孔 (16), 其下方连接一个短管 (14), 该短 管 (14) 内径小于内筒体 (12) 内径, 该圆锥形筒体 (10) 的上沿低于该短 管 (14) 的下沿。
8、根据权利要求 6所述的吸尘器二次旋风式分离尘杯, 其特征在于, 该 连接支架 (15) 与外筒体 (5) 和内筒体 (12) —体成型。
9、 根据权利要求 7所述的吸尘器二次旋风式分离尘杯, 其特征在于, 该连接支架 (15) 与外筒体 (5) 和内筒体 (12) —体成型。
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