CN114259185B - Air inlet channel structure with primary filtering function, cyclone separator and dust collector - Google Patents
Air inlet channel structure with primary filtering function, cyclone separator and dust collector Download PDFInfo
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- CN114259185B CN114259185B CN202210095729.6A CN202210095729A CN114259185B CN 114259185 B CN114259185 B CN 114259185B CN 202210095729 A CN202210095729 A CN 202210095729A CN 114259185 B CN114259185 B CN 114259185B
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- spiral pipeline
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
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Abstract
The invention discloses an air inlet channel structure with a primary filtering function, a cyclone separator and a dust collector, and belongs to the technical field of gas-solid separation; the upper end of the spiral pipeline is provided with an air outlet pipe communicated with the spiral pipeline, and the air outlet pipe is provided with an air outlet; at least 1 primary filtering opening is arranged on the side wall of the spiral pipeline, which is far away from one side of the spiral central shaft. The air inlet channel structure with the primary filtering function provided by the invention is based on a cyclone separation principle and a coanda effect, and is used for carrying out primary filtering on air flow, so that larger dust and ash can be separated, the load of an downstream separating device of the air flow is reduced, and the disturbance of the large dust and ash in the air flow to the downstream air flow is reduced.
Description
Technical Field
The invention belongs to the technical field of gas-solid separation, and particularly relates to an air inlet channel structure with a primary filtering function, a cyclone separator and a dust collector.
Background
The structure of the existing dust cup type dust collector based on the cyclone separation principle is usually that a cyclone cone is arranged in a dust collection barrel. The dusty gas stream enters the cyclone cone tangentially, producing a high velocity rotating gas stream. The separated dust falls to the bottom and clean air flows out from the upper part of the cone. Because the cyclone cone has low dust separation efficiency, the sponge or the filter screen arranged in front of the motor needs to be replaced frequently, or the sponge or the filter screen needs to be cleaned frequently, otherwise, the dust collected on the sponge or the filter screen can be blocked, so that the suction force of the dust collector is reduced. In order to improve the dust separation efficiency, multi-cone and multi-stage separation is generally adopted, and the structure is complex, the pressure drop loss and the noise are large, and the manufacturing cost is high.
Disclosure of Invention
In order to solve the technical problems, the invention adopts the following technical scheme:
an air inlet channel structure with a primary filtering function comprises a spiral pipeline, wherein an air inlet channel is formed in the inner wall of the spiral pipeline, an air inlet pipe communicated with the spiral pipeline is arranged at the lower end of the spiral pipeline, and the air inlet pipe is provided with an air inlet; an air outlet pipe communicated with the spiral pipeline is arranged at the upper end of the spiral pipeline, and the air outlet pipe is provided with an air outlet; the side wall of the spiral pipeline far away from one side of the spiral central shaft of the spiral pipeline is at least provided with 1 primary filtering opening.
Further, the primary filtering opening is provided with a first opening wall and a second opening wall along the airflow flowing direction, and an arc-shaped protruding part connected with the first opening wall is arranged on the outer wall surface of the first opening wall; the boss is located on a side remote from the second opening wall.
Further, the length of the primary filtering opening along the airflow flowing direction is L, the radial distance between the inner side wall and the outer side wall of the spiral pipeline is a, the section length of the protruding part along the airflow flowing direction is b, the maximum height of the protruding outer wall is c, and the length range of the primary filtering opening is 0.4< L/a <2; the length of the end face of the primary filtering opening is b/a <0.5.
Further, the protruding end face of the protruding portion is required to have a size of b/a <1, c/a <0.6.
Further, the radius of the outer side wall of the spiral pipeline is R, the radius of the inner side wall of the spiral pipeline is R, the rotation angle of the spiral pipeline is pi-6pi, and the axial layer height of the spiral central shaft of the spiral pipeline is 1-2.5 times of the height of the single-layer spiral pipeline; the distance between the outer side wall and the inner side wall of the spiral pipeline is required to be 1.5< R/a <4.5.
Further, each primary filtering opening corresponds to an independent dust collecting area.
A cyclone separator comprising an inlet air channel structure with a primary filtering function as claimed in any one of the preceding claims.
A vacuum cleaner comprises the cyclone separator.
The beneficial effects are that:
the air inlet channel structure with the primary filtering function provided by the invention is based on a cyclone separation principle and a coanda effect, and is used for carrying out primary filtering on air flow, so that larger dust and ash can be separated, the load of an downstream separating device of the air flow is reduced, and the disturbance of the large dust and ash in the air flow to the downstream air flow is reduced.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an air inlet channel structure with a primary filtering function;
FIG. 2 is a schematic cross-sectional view of the movement of the dusty gas stream in the primary filter channel;
FIG. 3 is a top view of a cross-section of a primary filter opening;
FIG. 4 is a cross-sectional top view of a primary filter opening without a boss;
wherein, 1, an air inlet; 2. an air inlet pipe; 3. a helical pipe; 301. an outer sidewall; 302. an inner sidewall; 4. primary filtering and opening; 401. a boss; 402. a first opening wall; 403. a second opening wall; 5. and an air outlet.
Detailed Description
Example 1
Referring to fig. 1-4, an air inlet channel structure with a primary filtering function comprises a spiral pipeline 3, wherein an air inlet channel is formed on the inner wall of the spiral pipeline 3, an air inlet pipe communicated with the spiral pipeline 3 is arranged at the lower end of the spiral pipeline 3, and the air inlet pipe is provided with an air inlet 1; an air outlet pipe communicated with the spiral pipeline 3 is arranged at the upper end of the spiral pipeline, and the air outlet pipe is provided with an air outlet 5; the side wall of the spiral pipeline 3, which is far away from the spiral central shaft side of the spiral pipeline, is provided with at least 1 primary filtering opening 4.
In this embodiment, 1 primary filter opening 4 is provided in the side wall of the spiral pipe 3 on the side away from its spiral central axis.
In other embodiments, a plurality of primary filter openings 4 may be provided on the side wall of the spiral duct 3 on the side remote from its spiral central axis, wherein each primary filter opening 4 corresponds to a separate dust collection zone.
In the present embodiment, the primary filter opening 4 has a first opening wall 402 and a second opening wall 403 in the airflow direction.
In the present embodiment, an arc-shaped convex portion 401 connected thereto is provided on the outer wall surface of the first opening wall 402; the boss 401 is located on a side remote from the second opening wall 403.
In the present embodiment, the length of the primary filtering opening 4 along the airflow direction is L, the radial distance between the inner sidewall 302 and the outer sidewall 301 of the spiral pipe 3 is a, the cross-sectional length of the protruding portion 401 along the airflow direction is b, the maximum height of the protruding outer sidewall 301 is c, and the length of the primary filtering opening 4 is in the range of 0.4< L/a <2; the length of the end face of the prefilter opening 4 is b/a <0.5.
In this embodiment, the protruding end face of the protruding portion 401 has a size requirement of b/a <1, c/a <0.6.
In this embodiment, the radius of the outer side wall 301 of the spiral pipe 3 is R, the radius of the inner side wall 302 is R, and the rotation angle of the spiral pipe 3 is pi-6pi, namely 0.5-3 weeks; the axial layer height of the spiral central shaft of the spiral pipeline 3 is 1-2.5 times of the height of the single-layer spiral pipeline; the distance between the outer side wall 301 and the inner side wall 302 of the helical pipe 3 is required to be 1.5< R/a <4.5.
In other embodiments, referring to fig. 4, the boss 401 may not be provided.
The working principle of the air inlet channel with the primary filtering function provided by the embodiment is as follows:
the air inlet channel with the primary filtering function provided by the embodiment is based on the cyclone separation principle and the coanda effect, when dust-containing gas enters from the air inlet 1 and reaches the air inlet channel part of the spiral pipeline 3 through the air inlet pipe 2, the air flow makes centrifugal motion in the spiral pipeline 3, dust-containing particles in the air flow, particularly large dust particles, are close to the outer side wall 301 of the air inlet channel under the action of centrifugal force, and the air flow close to the inner side wall 302 is relatively clean.
As shown in fig. 2, when the air flow passes through the primary filter opening 4, a part of dust particles near the outer side wall 301 of the air intake passage fly out of the opening by centrifugal force (f 1); and, because the air flow will generate a strong coanda effect under the influence of the protruding portion 401 (protruding end surface), the air flow will roll up dust particles close to the wall 301 to generate a certain arc to fly out (f 2).
The air flow after preliminary purification through the primary filter opening 4 carries fine dust particles to continue to move along the channel and enter the cyclone separation cone.
Example 2
A cyclone separator comprising the air inlet channel structure with the primary filtering function provided in embodiment 1.
Example 3
A vacuum cleaner comprising the cyclone separator provided in embodiment 2.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical principles of the present invention still fall within the scope of the technical solutions of the present invention.
Claims (5)
1. The air inlet channel structure with the primary filtering function is characterized by comprising a spiral pipeline, wherein an air inlet channel is formed in the inner wall of the spiral pipeline, an air inlet pipe communicated with the spiral pipeline is arranged at the lower end of the spiral pipeline, and the air inlet pipe is provided with an air inlet; an air outlet pipe communicated with the spiral pipeline is arranged at the upper end of the spiral pipeline, and the air outlet pipe is provided with an air outlet; at least 1 primary filtering opening is arranged on the side wall of the spiral pipeline, which is far away from one side of the spiral central shaft; the length of the primary filtering opening along the airflow flowing direction is L, the radial distance between the inner side wall and the outer side wall of the spiral pipeline is a, the section length of the protruding part along the airflow flowing direction is b, the maximum height of the protruding outer wall surface is c, and the length range of the primary filtering opening is 0.4< L/a <2; the end face length of the primary filtering opening is b/a <0.5;
the primary filter opening is provided with a first opening wall and a second opening wall along the airflow flowing direction, and an arc-shaped protruding part connected with the first opening wall is arranged on the outer wall surface of the first opening wall; the boss is located on a side remote from the second opening wall; the protruding end face of the protruding part has the size of b/a <1 and c/a <0.6.
2. The air inlet channel structure with the primary filtering function according to claim 1, wherein the radius of the outer side wall of the spiral pipeline is R, the radius of the inner side wall of the spiral pipeline is R, the rotation angle of the spiral pipeline is pi-6pi, and the axial layer height of the spiral central shaft of the spiral pipeline is 1-2.5 times of the height of a single-layer spiral pipeline; the distance between the outer side wall and the inner side wall of the spiral pipeline is required to be 1.5< R/a <4.5.
3. The air intake passage structure with primary filtering function according to claim 2, wherein each primary filtering opening corresponds to an independent dust collecting area.
4. A cyclone separator comprising the inlet air channel structure with primary filtering function as claimed in any one of claims 1 to 3.
5. A vacuum cleaner comprising a cyclone separator as claimed in claim 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210095729.6A CN114259185B (en) | 2022-01-26 | 2022-01-26 | Air inlet channel structure with primary filtering function, cyclone separator and dust collector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210095729.6A CN114259185B (en) | 2022-01-26 | 2022-01-26 | Air inlet channel structure with primary filtering function, cyclone separator and dust collector |
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| Publication Number | Publication Date |
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| CN114259185A CN114259185A (en) | 2022-04-01 |
| CN114259185B true CN114259185B (en) | 2023-06-16 |
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| CN202210095729.6A Active CN114259185B (en) | 2022-01-26 | 2022-01-26 | Air inlet channel structure with primary filtering function, cyclone separator and dust collector |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1986074A (en) * | 2005-12-24 | 2007-06-27 | 姜大志 | High efficiency cyclonic dust collector |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1329000C (en) * | 2003-03-25 | 2007-08-01 | 乐金电子(天津)电器有限公司 | Dust collector of vacuum cleaner |
| CN102327096B (en) * | 2011-09-29 | 2013-10-02 | 江苏美的春花电器股份有限公司 | Dust cup for dust collector and dust collector |
| CN104172988A (en) * | 2013-05-28 | 2014-12-03 | 向桂南 | Dust-gas separating device of vacuum cleaner |
| US11529035B2 (en) * | 2017-02-06 | 2022-12-20 | Aktiebolaget Electrolux | Separation system for vacuum cleaner and vacuum cleaner comprising the separation system |
| CN107898384A (en) * | 2017-11-29 | 2018-04-13 | 江苏美的清洁电器股份有限公司 | Dust and gas separator and there is its dust catcher |
| CN110448260A (en) * | 2019-08-16 | 2019-11-15 | 深圳晶华显示器材有限公司 | Dust-free workshop toilet pedal |
| CN113509077A (en) * | 2020-05-12 | 2021-10-19 | 苏州市春菊电器有限公司 | Be applied to dirt cup subassembly of hand-held type dust catcher |
| CN113854911B (en) * | 2021-09-30 | 2023-02-03 | 追觅创新科技(苏州)有限公司 | Box and have its cleaning device |
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- 2022-01-26 CN CN202210095729.6A patent/CN114259185B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1986074A (en) * | 2005-12-24 | 2007-06-27 | 姜大志 | High efficiency cyclonic dust collector |
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