CN113069039B

CN113069039B - Filter screen cylinder and portable dust collector

Info

Publication number: CN113069039B
Application number: CN202110400434.0A
Authority: CN
Inventors: 杨勇
Original assignee: Shenzhen 3irobotix Co Ltd
Current assignee: Shenzhen 3irobotix Co Ltd
Priority date: 2021-04-14
Filing date: 2021-04-14
Publication date: 2023-04-11
Anticipated expiration: 2041-04-14
Also published as: CN113069039A

Abstract

The application discloses a filter screen section of thick bamboo and handy dust catcher, this filter screen section of thick bamboo includes: the filter comprises a first-stage filter, a second-stage filter and a third-stage filter; wherein the second filter is downstream of the first filter in the dust airflow path; the third filter is located downstream of the second filter in the dust airflow path, wherein the second filter is located at least partially between the first filter and the third filter. The portable dust collector is provided with the filter screen cylinder. According to the invention, the second-stage filter is arranged on the upstream dust airflow path of the third-stage filter, part of dust can be adsorbed by the second-stage filter, the occurrence of the situation that the third-stage filter is blocked is reduced, the dust filtering amount of the filter screen cylinder is increased to a certain extent, and the dust containing amount of the filter screen cylinder is increased, so that the dust collecting device can meet the requirement of a consumer on obtaining higher-performance product use experience while pursuing light use.

Description

Filter screen cylinder and portable dust collector

[ technical field ] A method for producing a semiconductor device

The invention relates to the field of dust collection equipment, in particular to a portable dust collector and a filter screen cylinder thereof.

[ background of the invention ]

The portable dust collector is a household vehicle-mounted dual-purpose small dust collector, meets the dust collection requirements of people on narrow gaps, desktops, keyboards and the like in a vehicle, is not convenient for cleaning dust collection scenes, and is small in shape, convenient to carry and store. The working principle of the portable dust collector is as follows: the fan component works to discharge air in the cylinder at a high speed from the air outlet, the cylinder and the dust collection bin form instant vacuum, namely, the cylinder and the external atmosphere form high negative pressure difference, airflow carrying granular dirt such as dust is forced to enter the cylinder through the dust collection bin, the granular dirt such as dust is left in the dust collection bin after being filtered by the filter screen in the dust collection bin, and clean air flows through the fan component and the battery component and is discharged out of the cylinder through the air outlet to finish dust collection action.

Although the portable suction type product is convenient to use, the performance of the portable suction type product is usually greatly lower than that of the traditional handheld dust collector because the portable suction type product is only pursued to be light. Due to the adoption of a low-power motor and a few batteries, the suction power of a portable suction product is low, the endurance time is short, the capacity of a dust cup is small, a filter screen with a small dust holding capacity of a filter assembly is easy to block, and the use of a user is influenced.

[ summary of the invention ]

The invention aims to solve the problems that: how to reduce the problem that the filter assembly is small in dust holding capacity and easy to block when the product is sucked conveniently. Based on the filter screen cylinder, the invention provides the filter screen cylinder which can remarkably increase the dust filtering capacity of the whole filter assembly, thereby increasing the dust holding capacity of the whole filter assembly.

The purpose of the invention is realized by the following technical scheme:

a filter screen cartridge comprising:

a first stage filter having a plurality of mesh openings;

a second stage filter at least partially within the first stage filter, the second stage filter being downstream of the first stage filter in the dust airflow path;

a third stage filter positioned at least partially within the first stage filter, the third stage filter positioned downstream of the second stage filter in the dust airflow path, wherein the second stage filter is positioned at least partially between the first stage filter and the third stage filter.

According to the invention, the second-stage filter is arranged on the upstream dust airflow path of the third-stage filter, part of dust can be adsorbed by the second-stage filter, the occurrence of the blocking of the third-stage filter is reduced, the dust filtration capacity of the filter screen cylinder is increased to a certain extent, and the dust holding capacity of the filter screen cylinder is increased, so that the portable dust filter can meet the requirement of consumers on the use experience of products with higher performance while pursuing portability.

In one embodiment, the second stage filter is a sponge filter.

In one embodiment, the third stage filter is a HEPA filter.

In one embodiment, the second stage filter is sleeved on the periphery of the third stage filter and circumferentially wraps at least part of the third stage filter.

In one embodiment, the first filter comprises a hollow first filter part and a first bracket for positioning the first filter part, the first filter part is provided with a plurality of meshes, the bracket comprises a first end for closing one end of the first filter part and a second end which is connected with the other end of the first filter part and is open, the first end is opposite to the second end, and the second filter and the third filter are installed from the second end.

In one embodiment, the second filter is located in the first filter at a position opposite to the first filter portion, and the projection of the second filter is located in the first filter portion.

In one embodiment, the third stage filter is located in the position, facing the first filtering portion, of the first stage filter, the third stage filter comprises a hollow third filtering portion and a third support for positioning the third filtering portion, and the projection of the third filtering portion is located in the first filtering portion.

In one embodiment, a retaining flange is disposed on an inner side surface of the first end, and one end of the third bracket is retained in the retaining flange.

Based on the same inventive concept, the invention also discloses a portable dust collector with the filter screen cylinder, in particular,

a handy cleaner, comprising:

a housing;

the fan assembly is arranged in the shell and used for driving airflow to generate negative pressure;

the dust cup assembly is detachably connected to the shell and comprises a dust cup and a filter screen cylinder at least partially arranged in the dust cup.

In an embodiment, the filter screen cylinder is installed in the shell as a whole in a rotating manner, the first-stage filter is provided with a positioning groove or a positioning portion, the shell is provided with a positioning portion or a positioning groove, and the first-stage filter and the shell are matched in a rotating manner to realize positioning of the filter screen cylinder.

Compared with the prior art, the invention has the following beneficial effects:

according to the invention, the sponge filter is arranged on the upstream dust air flow path of the HEPA filter, and part of dust can be adsorbed by the sponge filter due to the addition of the sponge filter, so that the occurrence of the condition that the HEPA filter is blocked is reduced. Compared with a filter screen cylinder only provided with a HEPA filter, the filter screen cylinder increases the dust filtering amount of the whole filter assembly to a certain extent, so that the dust holding amount of the whole filter assembly is increased, and therefore the filter screen cylinder can meet the requirement of consumers on the use experience of products with higher performance while pursuing light use.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:

fig. 1 is a schematic perspective view of a filter screen drum according to an embodiment of the present disclosure.

Fig. 2 is an exploded schematic view of fig. 1.

Fig. 3 is a schematic cross-sectional view of a filter screen cylinder according to another embodiment.

FIG. 4 is a schematic view of the construction of the handy cleaner provided by the present application.

[ detailed description ] embodiments

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some of the structures related to the present application are shown in the drawings, not all of the structures. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

The terms "comprising" and "having," as well as any variations thereof, in this application are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present application can be understood by those skilled in the art according to specific situations.

Referring to fig. 1 to 3, an embodiment of the present application provides a filter screen cartridge, which belongs to a part of a dust cup assembly of a dust collector, and is mainly used for filtering dust in dust air.

The application discloses a filter screen section of thick bamboo, it mainly includes three filter, specifically is:

a first stage filter 1 having a plurality of mesh openings 11;

a second stage filter 2 located at least partially within the first stage filter 1, the second stage filter 2 being located downstream of the first stage filter 1 in the dust airflow path;

a third filter 3 located at least partially within the first filter 1, the third filter 3 being located downstream of the second filter 2 in the dust airflow path, wherein the second filter 2 is located at least partially between the first filter 1 and the third filter 3.

In an embodiment, the first stage filter 1 includes a hollow first filter portion 12 and a first support 13 for positioning the first filter portion 12, the first filter portion 12 has a plurality of meshes 11, the first support 13 includes a first end 131 for closing one end of the first filter portion 12 and a second end 132 connected to the other end of the first filter portion 12 and having an open shape, the first end 131 is opposite to the second end 132, and the second stage filter 2 and the third stage filter 3 are installed into the first filter portion 12 from the second end 132.

The first bracket 13 is a cylinder having a hollow frame structure as a whole, and the cylinder includes a first end 131 and a second end 132 opposite to the first end 131 in the installation position, the first end 131 is of a closed structure, and the second end 132 is of an open structure, so that the second filter 2 and the third filter 3 can be installed from the second end 132.

The first filter portion 12 is disposed between the first end 131 and the second end 132 of the first bracket 13. The first filter unit 12 has a plurality of meshes 11, and the meshes 11 serve as an inlet for the dust and air to flow into the second filter 2 and the third filter 3 in sequence along a dust and air flow path.

The first stage filter 1 may be of unitary construction. For example, in one embodiment, the first filter 1 is a hollow cylindrical thin-walled metal cylinder that is closed at one end by the first end 131 of the first bracket 13 and open at the other end, and the open end is positioned by the second end 132 of the first bracket 13 and is used to house the second and

third filters

2 and 3. The side wall of the metal thin-wall cylinder is provided with a plurality of meshes 11, and the meshes 11 are distributed on most part of the side wall in an array shape and are terminated within a preset distance of the metal thin-wall cylinder close to the open end and the closed end of the metal thin-wall cylinder. Thus, the side wall portion having the mesh openings 11 constitutes the first filter portion 12 of the first filter 1, and the remaining portion not including the mesh openings 11 constitutes the first holder 13 of the first filter 1.

While the first filter 1 is described above as being a unitary structure, it should be understood that the first filter 1 may be a split structure. For example, in a specific implementation scenario, the first stage filter 1 includes a first bracket 13 and a first filter portion 12 disposed on the first bracket 13. Referring to fig. 3, the first bracket 13 may be composed of a lower cover 15 and an upper cover 14 spaced opposite to the lower cover 15. Wherein, the upper cover 14 is an open structure, and the lower cover 15 is a closed structure. The cross-sections of the lower cap 15 and the upper cap 14 are substantially circular. Between the lower cover 15 and the upper cover 14 there is provided a member, such as a metal net, which is wound around a circle along the cylindrical surface defined by the lower cover 15 and the upper cover 14, so that the metal net constitutes the first filter portion 12 of the first stage filter 1, and obviously, the metal net has a plurality of mesh openings 11.

In the above structure, in order to facilitate the connection between the metal mesh and the lower cover 15 and the upper cover 14, a slot 17 may be formed in the lower cover 15, and correspondingly, a slot 18 may be formed in the upper cover 14, and the slots (17, 18) are circular in cross section, so that two ends of the metal mesh in the longitudinal direction may be respectively inserted into the slots (17, 18).

In one embodiment, the second stage filter 2 is a sponge filter; the third stage filter 3 is a HEPA filter. Wherein, the second filter 2 is sleeved on the periphery of the third filter 3 and is circumferentially wrapped at least part of the third filter 3. It can be understood that the second filter 2 is wrapped around the third filter 3 to achieve better filtering effect.

The HEPA Filter is a High-Efficiency Air Filter, and is called HEPA for short under the English name of High Efficiency Particulate Air Filter. The high-efficiency air filter is mainly used for trapping particle dust and various suspended matters with the particle size of more than 0.5 mu m, has high filtering efficiency and low flow resistance, and can be continuously used for a long time so as to reduce the cost of later-period consumables.

Through having set up the sponge filter on HEPA filter's upstream dirt air current path, owing to increased the sponge filter, some dust can be adsorbed by the sponge filter, has reduced the condition emergence that HEPA filter is blocked up. Compared with a filter screen cylinder only provided with a HEPA filter, the filter screen cylinder increases the dust filtration capacity of the whole filter assembly to a certain extent, so that the dust holding capacity of the whole filter assembly is increased, and therefore the filter screen cylinder can meet the requirement of consumers on the use experience of products with higher performance while pursuing light use.

In one embodiment, the first stage filter 1 is a hollow cylinder structure, and the second stage filter 2 and the third stage filter 3 are also a hollow cylinder structure. The second filter 2 is installed in the first filter 1 from the open end of the first filter 1, and the third filter 3 is also installed from the open end of the first filter 1, but the third filter 3 is located in the second filter 2, so that the first filter 1, the second filter 2 and the third filter 3 are arranged in sequence from the outside to the inside.

In a preferred embodiment, the second filter 2 is located in the first filter 1 at a position opposite to the first filter portion 12, and the projection of the second filter 2 is located in the first filter portion 12. In this way, it is ensured that the first filter stage 1 and the second filter stage 2 can exert their maximum filtering performance in the dust-air flow path.

Similarly, the third filter 3 is also located in the first filter stage 1 and directly faces the first filter part 12, the third filter 3 includes a hollow third filter part 32 and a third support 31 for positioning the third filter part 32, and the projection of the third filter part 32 is located in the first filter part 12. In this way, the portions of the dust flow path in which the first filter 1, the second filter 2, and the third filter 3 exert the filtering effects can be ensured to function at the maximum.

Referring to fig. 3, in one embodiment, in order to facilitate the fixing of the second filter 2 in the first filter 1, a holding flange 16 is provided on the inner surface of the first end 131 of the first filter 1, and one end of the third bracket 13 is held inside the holding flange 16.

Therefore, the filter screen cylinder disclosed by the embodiment is provided with two filter units, namely the sponge filter 2 and the HEPA filter 3, besides the metal mesh filter, and due to the fact that the sponge filter 2 is added, part of dust can be adsorbed by the sponge filter 2, the occurrence of the situation that the HEPA filter 3 is blocked is reduced, the dust filtering amount of the whole filter assembly is increased to a certain extent, and the dust containing amount of the whole filter assembly is increased.

The embodiments given above describe the construction of the filter screen cartridge in greater detail and the following embodiments will attempt to describe briefly the application of the filter screen cartridge, namely a handy cleaner in which the filter screen cartridge is installed.

Referring to fig. 4, the handy cleaner 100 in this application scenario includes:

a housing 101;

a dust cup assembly 102 connected with one side of the housing 101 and a handle 103 connected with the other side of the housing 101 for holding; and

a motor assembly 105 located within the housing 101 and a battery pack 106 located at least partially within the handle 103;

wherein, the first and the second end of the pipe are connected with each other,

one end of the dust cup assembly 102 is provided with an air inlet, and the dust cup assembly 102 is rotatably connected with the housing 101 for mounting and dismounting. The dirt cup assembly 102 includes a cup body and a filter screen cartridge 104 positioned within the cup body. The motor assembly 105 includes a motor and a fan. The dirt cup assembly 102, the motor assembly 105, and the battery pack 106 are arranged in sequence along the axis of the motor, with the battery pack 106 at least partially disposed within the handle 103.

In one embodiment, the filter screen cylinder is rotatably installed in the casing 101 as a whole, the first stage filter 1 is provided with a positioning groove or a positioning portion, the casing 101 is provided with a positioning portion or a positioning groove, and the first stage filter 1 and the casing are rotatably matched to realize the positioning of the filter screen cylinder. In the embodiment of fig. 1, a clamping groove is formed in the first-stage filter 1, and a positioning portion is correspondingly formed in the housing, and the positioning portion rotates relative to the clamping groove during installation to position the filter screen cylinder.

The filter screen cartridge 104 is used to separate dirt and gas from the airflow, and the separated dirt and dust is temporarily stored in the dirt cup. When the portable dust collector is in a working state, the motor assembly 105 operates to form suction airflow under the action of negative pressure, the suction airflow enters a dust cup of the portable dust collector through the air inlet, after primary filtration is carried out on the suction airflow through the first-stage filter 1, the dust airflow enters the filter screen cylinder 104 from the first-stage filter 1, secondary filtration is carried out on the dust airflow through the second-stage filter 2, finally, the dust airflow containing a small amount of dust enters the third-stage filter 3 again to be filtered for the third time, the airflow filtered by the third-stage filter 3 flows towards the motor direction, and finally, the airflow is discharged from the air outlet beside the motor.

Therefore, the handy cleaner 100 disclosed by the application has a three-level filtering function, the dust filtering amount of the dust cup assembly 102 can be increased to a certain extent, and the dust containing amount of the dust cup assembly 102 is also increased, so that the handy cleaner can meet the requirement of consumers on using a product with higher performance while pursuing light use.

Claims

1. A filter screen cartridge, comprising:

a first stage filter having a plurality of mesh openings;

a second stage filter at least partially within the first stage filter, the second stage filter being downstream of the first stage filter in a dust airflow path;

a third stage filter positioned at least partially within the first stage filter, the third stage filter positioned downstream of the second stage filter in a dust airflow path, wherein the second stage filter is positioned at least partially between the first stage filter and the third stage filter;

the first-stage filter also comprises a hollow first filtering part and a first bracket for positioning the first filtering part, wherein the first filtering part is provided with a plurality of meshes, and the meshes are distributed on the whole peripheral surface of the outer wall of the first filtering part; the first-stage filtering part is a hollow cylindrical metal thin-wall cylinder, one end of the metal thin-wall cylinder is sealed through the first end of the first support to form a closed end, and the other end of the metal thin-wall cylinder is an open end; the open end is positioned through the second end of the first bracket and is used for installing the second-stage filter and the third-stage filter, and the first filter part is arranged between the first end and the second end of the first bracket; the side wall of the metal thin-wall cylinder is provided with a plurality of meshes, and the meshes are distributed on the side wall in an array shape and are terminated within a preset distance of the metal thin-wall cylinder adjacent to the open end and the closed end;

the third-stage filter is positioned in the first-stage filter and is opposite to the first filtering part, the third-stage filter comprises a hollow third filtering part and a third support for positioning the third filtering part, and the projection of the third filtering part is positioned in the first filtering part;

a clamping flange is arranged on the inner side surface of the first end;

one end of the third bracket is clamped in the clamping flange.

2. A filter screen cartridge according to claim 1, wherein: the second-stage filter is a sponge filter.

3. A filter screen cartridge according to claim 1, wherein: the third stage filter is a HEPA filter.

4. A filter screen cartridge according to claim 1, wherein: the second-stage filter is sleeved on the periphery of the third-stage filter and at least part of the third-stage filter is wrapped in the circumferential direction.

5. A filter screen cartridge according to claim 1, wherein: the first end is opposite to the second end, and the second stage filter and the third stage filter are installed from the second end.

6. A screen cylinder according to claim 5, wherein: the second-stage filter is located in the first-stage filter and opposite to the first filtering portion, and the projection of the second-stage filter is located in the first filtering portion.

7. A handy cleaner, comprising:

a housing;

a dirt cup assembly removably attached to the housing, the dirt cup assembly comprising a dirt cup and the filter screen cartridge of any of claims 1-6 at least partially disposed within the dirt cup.

8. The handy cleaner of claim 7, wherein: the filter screen cylinder is installed in the shell in a rotating mode as a whole, a positioning groove or a positioning portion is arranged on the first-stage filter, the shell is provided with the positioning portion or the positioning groove, and the first-stage filter is matched with the shell in a rotating mode to achieve positioning of the filter screen cylinder.