Gas and dust separation device and vacuum cleaner

Abstract

The invention discloses an air-dust separation device and a vacuum cleaner, comprising: a dust cup including an outer cup and an inner cup with an opening facing downwards on the outer cup; The air outlet; the top of the inner cup is provided with a first air outlet; the air-dust separator includes a dust collection funnel located inside the outer cup and inserted above the inner cup, and the dust collection funnel is provided with filter grid holes; the first air inlet, the second air inlet The tuyere, the first air outlet, and the filter grid hole form an airflow path; the inner cup separates and stores the airflow that enters through the second air inlet; the filter grid hole performs a second-level separation of the airflow after the first-level separation. The present invention adopts the inner cup with the opening facing down to store the dust, the storage and cleaning of the dust collection pipe and the inner cup are not intersected, and the cleaning is convenient; the three-stage separated fine dust is sent to the dust collection pipe, and will not interfere with the outside of the cyclone pipe and the outer surface of the cyclone pipe. The space between the inner sides of the cups causes pollution; multi-stage cyclone separation is set, which has a better effect of gas and dust separation.

Description

technical field [0001] The invention relates to the technical field of home appliances, and more specifically, the invention relates to a gas-dust separation device and a vacuum cleaner. Background technique [0002] The vacuum cleaner is a small household appliance that uses a motor to drive the blades to rotate at high speed to generate negative air pressure in the sealed casing to absorb dust. The floor brush, connecting pipe, handle, hose, and main suction pipe enter the dust filter bag in the dust box, and the dust is left in the dust filter bag, and the filtered air enters the motor through a layer of filter, which prevents the dust bag from breaking Dust is sucked into a protective barrier of the motor, filtered air enters the motor and is exhausted again into the room. [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 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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