CN215016705U

CN215016705U - Front-mounted filtering system and handheld dust collector

Info

Publication number: CN215016705U
Application number: CN202120693262.6U
Authority: CN
Inventors: 朱霖玉
Original assignee: Suzhou Nengshuo Electrical Technology Co ltd
Current assignee: Suzhou Nengshuo Electrical Technology Co ltd
Priority date: 2021-04-06
Filing date: 2021-04-06
Publication date: 2021-12-07
Anticipated expiration: 2031-04-06

Abstract

The utility model relates to a hand-held dust collector, which adopts a front-mounted filtering system, wherein the front-mounted filtering system mainly comprises an outer filtering net, a cyclone separating system and a front-mounted filtering mechanism; along the air flow advancing direction, the outer filter screen, the cyclone separation system and the front-mounted filter mechanism are sequentially arranged. The cyclone separation system and the front-mounted filter mechanism form a detachable connection structure. Through set up leading filtration system before the motor air intake, and this leading filtration system includes outer filter screen, cyclone separation system and leading filter mechanism tertiary filtration, can fully filter, has avoided dust or impurity to enter airflow generator and to its harmful effects such as production corruption, hindrance, can be applied to the higher scene of some dirty degrees.

Description

Front-mounted filtering system and handheld dust collector

Technical Field

The utility model relates to a mechanical dust removal technical field, concretely relates to leading filtration system and handheld dust catcher.

Background

At present, a dust collector as a household cleaning appliance has been moved to thousands of households. Among them, the hand-held vacuum cleaner has the advantages of small size, portability, convenient use and the like, is more suitable for cleaning smaller space, and is popular. The principle of dust collection is as follows: the fan impeller of the dust collector is driven by the motor at high speed to discharge air in the impeller out of the fan at high speed, and simultaneously air in the dust collection part is continuously supplemented to the air inlet fan, so that high pressure difference is formed between the air inlet fan and the outside, dust and dirt in a suction nozzle are sucked into the dust collection part along with the air and are filtered by the filter, and the dust and the dirt are collected in the dust barrel.

In the prior art, a handheld dust collector mainly comprises a suction pipeline, a separation device, an airflow generator, a handle and a power supply; wherein the airflow generator is used for generating airflow flowing along the suction pipeline; separating means communicating with said suction duct for separating dirt and dust from said airflow; the power supply is used for supplying power to the airflow generator. Cyclonic separation systems have been incorporated into hand-held cleaners (for example GB2035787A discloses a hand-held vacuum cleaner) which are capable of removing large debris from an airflow before fine particles are removed using a filter or other barrier means, and are efficient and effective in separation and are therefore widely used.

For this piece of separator, the prior art mainly includes outer filter screen (for example, metal mesh), whirlwind separation system, and locates the filter pulp (such as HEPA) of motor exit, however, practical application finds that, for some application scenes that dirty degree is higher, two filter mechanism of outer filter screen and whirlwind separation system of the preceding road are still not enough to reach the purpose of fully filtering cleanly. These insufficiently filtered dust or impurities may enter the airflow generator and adversely affect it, such as by corrosion, obstruction, etc.

Therefore, a new pre-filter system is developed to further improve the filtering effect of the dust collector, which obviously has positive significance for improving the service life of the airflow generator.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an airflow generator and handheld dust catcher to the weak point that above-mentioned prior art exists.

In order to achieve the above object, the present invention provides the following technical solutions: a pre-filtering system mainly comprises an outer filter screen, a cyclone separation system and a pre-filtering mechanism; along the air flow advancing direction, the outer filter screen, the cyclone separation system and the front-mounted filter mechanism are sequentially arranged.

Preferably, the outer filter screen is a metal filter screen.

Preferably, the pre-filter mechanism is HEPA. The pre-filtering mechanism can also be a sponge or a scouring pad.

The utility model discloses request simultaneously to protect a handheld dust catcher, adopt foretell leading filtration system. The front-mounted filtering system mainly comprises an outer filtering net, a cyclone separating system and a front-mounted filtering mechanism; along the air flow advancing direction, the outer filter screen, the cyclone separation system and the front-mounted filter mechanism are sequentially arranged. The cyclone separation system and the front-mounted filter mechanism form a detachable connection structure.

Preferably, the outer filter screen is a metal filter screen.

Preferably, the handheld vacuum cleaner further comprises a dust bucket, and the front filter system is located in the center of the dust bucket.

Preferably, the cyclone separation system in the pre-filtering system is arranged in the outer filter screen, and the pre-filtering mechanism is arranged below the center of the cyclone separation system.

More preferably, the outer filter screen, the cyclone separation system and the pre-filter mechanism are all arranged substantially coaxially, preferably coaxially.

Preferably, the front-mounted filtering mechanism is clamped below the center of the cyclone separation system from bottom to top. Namely: the front-mounted filtering mechanism is inserted, installed and pulled out from the lower part of the cyclone separation system.

Preferably, the cyclone separation system in the pre-filtering system comprises at least 2 cyclone cones, and the cyclone cones are axially distributed. Preferably, the cyclone separation system comprises 4-12 cyclone cones, and more preferably 6 cyclone cones. According to another corresponding technical scheme, the cyclone separation system in the pre-filtering system comprises 1 cyclone cone, and the cyclone cone is provided with at least 2 air inlets.

Preferably, the device also comprises an airflow generator, wherein the airflow generator is arranged above the pre-filtering system; along the air flow advancing direction, the outer filter screen, the cyclone separation system, the front-mounted filter mechanism and the air flow generator are sequentially arranged. Preferably, the airflow generator is an electric motor.

Preferably, the air outlet of the airflow generator is provided with a post-filter mechanism. Preferably, the post-filter mechanism is HEPA, and can also be sponge or scouring pad.

The working process of the utility model is as follows: the dust-containing air flow coming from the suction pipeline firstly passes through the outer filter screen, then enters the cyclone separation system for cyclone separation, then moves downwards from the air outlet of the cyclone cone of the cyclone separation system, enters the motor after being filtered by the front filter mechanism, and finally is discharged from the air outlet of the motor.

Compared with the prior art, the utility model discloses the beneficial technological effect who obtains:

1. the utility model designs a handheld dust collector with a new structure, which is characterized in that a front-mounted filter system is arranged in front of the air inlet of the motor, the front-mounted filter system comprises an outer filter screen, a cyclone separation system and a front-mounted filter mechanism for three-stage filtration, which can fully filter, avoid the dust or impurities from entering the airflow generator to generate adverse effects such as corrosion and obstruction on the airflow generator, can be applied to scenes with higher dirt degree, and has positive practical significance;

2. the utility model arranges the front-mounted filter mechanism in front of the air inlet of the motor, thereby realizing higher-level filtering and prolonging the service life of the airflow generator;

3. the front-mounted filtering mechanism of the utility model is arranged below the center of the cyclone separation system, and is inserted, installed and pulled out from the lower part of the cyclone separation system, so that the cyclone separation system is convenient to disassemble and assemble and easy to maintain and replace;

4. the utility model discloses the structure is comparatively simple, and convenient to use is swift, and the cost is lower, is suitable for popularization and application.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a partial longitudinal sectional view of a first embodiment of the present invention.

Fig. 2 is a cross-sectional view of a first embodiment of the present invention.

Fig. 3 is a sectional view B-B of fig. 2.

Fig. 4 is a partial airflow direction diagram in the first embodiment of the present invention.

Fig. 5 is a sectional view a-a of fig. 2.

In the above drawings: 1. an outer filter screen; 2. a cyclonic separation system; 3. a pre-filter mechanism; 4. a dust barrel; 5. an airflow generator.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments, but not all embodiments, of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example one

Referring to fig. 1-5, a hand-held vacuum cleaner employs a pre-filter system; the pre-filtering system mainly comprises an outer filtering net 1, a cyclone separation system 2 and a pre-filtering mechanism 3; along the air flow advancing direction, the outer filter screen, the cyclone separation system and the front-mounted filter mechanism are sequentially arranged. The cyclone separation system and the front-mounted filter mechanism form a detachable connection structure, and specifically the cyclone separation system and the front-mounted filter mechanism are as follows: the front filtering mechanism is clamped below the center of the cyclone separation system from bottom to top; namely: the front-mounted filtering mechanism is inserted, installed and pulled out from the lower part of the cyclone separation system.

In this embodiment, the outer filter screen is a metal filter screen. The front-mounted filtering mechanism is HEPA.

In this embodiment, the handheld vacuum cleaner further comprises a dust bucket 4, and the pre-filter system is located in the center of the dust bucket. The cyclone separation system in the pre-filtering system is arranged in the outer filter screen, and the pre-filtering mechanism is arranged below the center of the cyclone separation system. And the outer filter screen, the cyclone separation system and the front-mounted filter mechanism are all coaxially arranged.

In this embodiment, the cyclone separation system in the pre-filtration system comprises 6 cyclone cones which are axially and uniformly distributed.

In the embodiment, the device further comprises an airflow generator 5, wherein the airflow generator is arranged above the pre-filtering system; along the air flow advancing direction, the outer filter screen, the cyclone separation system, the front-mounted filter mechanism and the air flow generator are sequentially arranged. The airflow generator is a motor. And a rear-mounted filtering mechanism is arranged at the air outlet of the airflow generator. The rear filtering mechanism is HEPA.

Fig. 3-5 are the airflow direction chart of the utility model, the concrete working process is as follows: the dusty airflow coming from the suction pipeline firstly passes through the outer filter screen, as shown in fig. 3, then enters the cyclone separation system for cyclone separation, as shown in fig. 4, then moves downwards from the air outlet of the cyclone cone of the cyclone separation system, enters the motor after being filtered by the front filter mechanism, as shown in fig. 4, and finally is discharged from the air outlet of the motor, and when the rear filter mechanism is arranged at the air outlet of the motor, the airflow is also subjected to the last filtering by the rear filter mechanism and finally is discharged.

The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. Various modifications and changes may occur to those skilled in the art, including combinations and subcombinations of the features. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A pre-filtering system is characterized by mainly comprising an outer filter screen, a cyclone separation system and a pre-filtering mechanism; along the air flow advancing direction, the outer filter screen, the cyclone separation system and the front-mounted filter mechanism are sequentially arranged.

2. A pre-filter system according to claim 1, wherein the outer filter mesh is a metal filter mesh.

3. The prefiltration system according to claim 1 wherein said prefiltration mechanism is HEPA.

4. A hand-held vacuum cleaner incorporating a pre-filter system as claimed in any one of claims 1 to 3.

5. The hand-held cleaner of claim 4, further comprising a dirt bucket, the pre-filter system being centrally located on the dirt bucket.

6. The hand-held cleaner of claim 4, wherein the cyclonic separation system of the pre-filter system is disposed within the outer filter screen and the pre-filter mechanism is disposed centrally below the cyclonic separation system.

7. The hand-held cleaner of claim 6, wherein the pre-filter mechanism is captured from below to above under the center of the cyclonic separation system.

8. The hand-held cleaner of claim 4, wherein the cyclonic separation system of the pre-filter system includes at least 2 cyclone cones arranged in an axially annular arrangement.

9. The hand-held cleaner of claim 4, further comprising an airflow generator disposed above the pre-filter system; along the air flow advancing direction, the outer filter screen, the cyclone separation system, the front-mounted filter mechanism and the air flow generator are sequentially arranged.

10. The hand-held cleaner of claim 9, wherein the airflow generator is provided with a post-filter mechanism at the outlet.