Air dust separation device and dust collector

Abstract

The invention discloses an air dust separation device and a dust collector. The air dust separation device comprises a dust cup and an air dust separator, the dust cup comprises an outer cup and an inner cup with a downward opening, the inner cup is arranged in the outer cup, a first air inlet and a second air inlet are communicated and correspondingly formed in the outer cup and the inner cup respectively, a first air outlet is formed in the top of the inner cup, the air dust separator comprises a dust-collecting hopper which is positioned on the inner side of the outer cup and connected to the upper portion of the inner cup in an inserted manner, the dust-collecting hopper is provided with a filtering gate hole, the first air inlet, the second air inlet, the first air outlet and the filtering gate hole form an airflow passage, the inner cup is used for primarily separating and collecting airflow rotationally entering the second air inlet, and the filtering gate hole is used for secondarily separating the airflow which is primarily separated. The inner cup with the downward opening is used for collecting dust, collecting and cleaning of a dust-collecting tube and the inner cup are uncrossed, the air dust separation device is convenient to clean, three-stage separated fine dust is delivered to the dust-collecting tube, the space between the outer side of a cyclone tube and the inner side of the outer cup cannot be polluted, and the air dust separation device has good air dust separation effects by the aid of multi-stage cyclone separation.

Description

technical field [0001] The present invention relates to the technical field of home appliances, and more particularly, to a gas-dust separation device and a vacuum cleaner. Background technique [0002] The vacuum cleaner is a small household appliance that uses the motor to drive the blades to rotate at a high speed, generates negative air pressure in the sealed casing, and absorbs dust. The floor brush, connecting pipe, handle, hose, and main suction pipe enter the dust filter bag in the dust box, the dust is left in the dust filter bag, and the filtered air enters the motor through a layer of filter, which is to prevent the dust bag from breaking. The dust is sucked into a protective barrier of the motor, and the filtered air enters the motor and is discharged into the room again. [0003] Therefore, the filter structure in the dust box determines the cleaning effect and air permeability of the vacuum cleaner. If the filter structure in the dust box is too simple, the ai...

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Problems solved by technology

[0003] Therefore, the filter structure in the dust box determines the dust collection effect and air permeability of the vacuum cleaner. If the filter structure in the dust box is too simple, the air sucked into the dust box will return to the room with a large amount of dust, mixed with When the dusty air passes through the motor, it not only has a limited cooling effect on the motor, but also easily blocks the motor and damages the motor. What is more serious is that the dust near the surface is discharged into the room through the vacuum cleaner, which greatly reduces the The indoor air environment affects people's respiratory health, which seriously violates the original intention of the vacuum cleaner to clean the air; if a filter is added to affect the air circulation just to enhance the effect of filtering dust, then as a large amount of dust accumulates on the filter, the dust will Blocking the filter will greatly affect the air permeability of the vacuum cleaner, making it difficult for the airflow to flow through the motor to the outside of the vacuum cleaner. Service life

[0004] In the prior art, the dust box is equipped with a cyclone filter structure and a filter grid structure. The air entering the dust box first passes through the cyclone filter structure, and the airflow rotates at a high speed, and the larger particles of impurity dust are preferentially thrown out, which will not affect the secondary filter. The filter parts and filter holes are blocked, but the inner cup is a structure with the opening facing upwards. Under the disturbance of the air flow, some separated ash will be sucked into the next filter link with the air again, which affects the separation efficiency; and, the dust Falling into the bottom of the cup, there is still a dead zone of dust at the bottom of the cup, and the inner cup must be removed to clean it thoroughly, which is inconvenient to clean; it enters multiple cyclone pipes through filter holes, diversion holes and cyclone inlets, and the airflow flows along the collection in the cyclone pipes. The outer wall of the air duct rotates downward at high speed to complete the secondary cyclone filtration; the multi-stage cyclone filtration method can efficiently filter and separate the fine dust entrained in the airflow; In the middle, the airflow with fine dust enters the cavity between the outer wall of the inner air collecting tube and the inner side of the outer cup and rotates, which is easy to pollute the inner side of the outer cup and the outer side of the inner cup. It can be cleaned after being disassembled, which is inconvenient to clean

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