Dust-air separation structure and dust collector

Abstract

The dust-air separation structure comprises a dust cup and a filtering device arranged in the dust cup, a plurality of air inlet holes are formed in the peripheral side of the filtering device, and an airflow cavity is formed between the dust cup and the filtering device; the dust cup is provided with an air inlet, a baffle is arranged at the air inlet, and the baffle is used for enabling airflow flowing in from the air inlet to flow in the circumferential direction of the airflow cavity; a circle of step is arranged on the inner wall of the dust cup and located below the air inlet. The utility model provides a dust-air separation structure and a dust collector, which can improve the separation efficiency, so that little dust enters a filter material, and the cleaning and replacement of the filter material are reduced.

Description

Technical Field

[0001] This utility model relates to the field of electrical technology, and more specifically to a dust-air separation structure and a vacuum cleaner. Background Technology

[0002] With the development of technology, vacuum cleaners have become an important cleaning tool in modern homes. Current vacuum cleaners mainly use dust bags, filters, cyclone separators (including single-cone and multi-cone types), and water filtration to separate dust and air. Among these, using dust bags and filters requires frequent replacement of the dust bag or cleaning and replacement of the filter due to clogging. Single-cone cyclone separators are generally used in conjunction with filter media, but most products, due to their structural design and other factors, do not achieve the required separation efficiency, leading to easy clogging of the filter media, thus requiring frequent cleaning and replacement. Multi-cone cyclone separators have a complex structure, resulting in greater airflow loss and poor dust collection performance. Utility Model Content

[0003] In order to overcome the above-mentioned shortcomings of the prior art, this utility model provides a dust-air separation structure and a vacuum cleaner, which can improve the separation efficiency, thereby reducing the amount of dust entering the filter material and reducing the need for cleaning and replacing the filter material.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a dust-air separation structure, including a dust cup and a filter device disposed in the dust cup, the filter device is provided with multiple air inlets on its outer periphery, and an airflow cavity is formed between the dust cup and the filter device; the dust cup is provided with an air inlet, and a baffle is provided at the air inlet, the baffle is used to make the airflow flowing in from the air inlet flow along the circumference of the airflow cavity; a step is provided on the inner wall of the dust cup, and the step is located below the air inlet.

[0005] The aforementioned air inlet is sealed to the air duct of the vacuum cleaner, and the dust cup draws in the dust-air mixture through the air inlet; the baffle can be set along the tangential direction of the outer periphery of the filter device, and tangential air intake can be achieved at the air inlet, so that the dust-air mixture entering through the air inlet flows circumferentially along the airflow cavity, forming a cyclone airflow; the step can reduce the space, thereby increasing the cyclone wind speed and improving the dust-air separation effect.

[0006] In a preferred embodiment, the filtration device includes filter media, a filter media support, and a separator; the upper part of the filter media support is provided with an installation groove for installing the filter media, and the bottom center of the filter media support is provided with an air outlet pipe; the separator is installed at the lower end of the filter media support, and the air outlet pipe is inserted into the central through hole of the separator; the bottom edge of the separator is provided with a ring of annular ribs, which can accelerate the cyclone to enhance the centrifugal force on the dust, thereby improving the dust-air separation efficiency.

[0007] In a preferred embodiment, the baffle is arranged along the tangential direction of the outer periphery of the separator; or, the baffle is arranged parallel to the tangential direction of the inner wall of the dust cup to achieve tangential air intake at the air inlet.

[0008] In a preferred embodiment, the top of the separator is attached to the bottom of the filter media holder, and the bottom of the filter media holder is flush with the upper wall of the air inlet, which helps to better separate dust and gas.

[0009] In a preferred embodiment, the vertical height difference between the bottom of the air outlet pipe and the lower wall of the air inlet is ±mm, which helps to further improve the dust-air separation efficiency.

[0010] In a preferred embodiment, the vertical distance from the bottom of the air outlet pipe to the lower wall of the air inlet is mm.

[0011] In a preferred embodiment, the distance between the end of the baffle facing the separator and the separator is no more than one-fifth of the shortest distance from the outer peripheral wall of the separator to the inner wall of the dust cup, which can effectively prevent dust backflow.

[0012] In a preferred embodiment, the bottom of the dust cup is provided with an openable dust cup cover, which facilitates emptying and cleaning for the user.

[0013] In a preferred embodiment, the dust cup bottom cover is connected to the dust cup via a snap-fit ​​mechanism, making installation and removal very easy.

[0014] A vacuum cleaner includes a dust-air separation structure as described in any of the above technical solutions.

[0015] The vacuum cleaner in this technology uses the above-mentioned dust-air separation structure, which can improve the dust-air separation efficiency, thereby reducing the amount of dust entering the filter material and reducing the need for cleaning and replacing the filter material.

[0016] As can be seen from the above technical solution, compared with the prior art, the beneficial effects of this utility model are: a dust-air separation structure, by setting a baffle at the air inlet, can achieve tangential air intake and prevent dust from flowing back into the air inlet when the vacuum cleaner is not working. At the same time, a step is set below the air inlet to accelerate the cyclone airflow, thereby increasing the centrifugal force on the dust and improving the dust-air separation efficiency, thus reducing the amount of dust entering the filter material, reducing the need for cleaning and replacing the filter material, and overcoming the disadvantage of single-cone cyclone air separation structure requiring frequent cleaning and replacement of the filter material; moreover, compared with multi-cone separation, it can also improve the working efficiency of the vacuum cleaner; a vacuum cleaner using the above dust-air separation structure can improve the dust-air separation efficiency, thereby reducing the amount of dust entering the filter material and reducing the need for cleaning and replacing the filter material.

[0017] In addition, other advantages of this invention will be set forth in the description which follows, in part will be obvious from the description, or may be learned by practice of this invention. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the internal structure of the dust-gas separation structure of this utility model;

[0020] Figure 2 This is a cross-sectional schematic diagram of the dust-gas separation structure of this utility model;

[0021] Figure 3 This is an exploded view of the dust-gas separation structure of this utility model;

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Dust cup; 11. Air inlet; 12. Baffle; 13. Step; 14. Dust cup bottom cover; 2. Filter device; 21. Filter media; 22. Filter media support; 221. Air outlet pipe; 23. Separator; 231. Annular rib; 3. Air duct. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In the description of this utility model, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0026] Reference Figure 1-3 This invention describes a dust-air separation structure and a vacuum cleaner according to an embodiment of the present invention.

[0027] In one embodiment, such as Figure 1-3 As shown, a dust-air separation structure includes a dust cup 1 and a filter device 2 disposed in the dust cup 1. The filter device 2 has multiple air inlets on its outer periphery, and an airflow cavity is formed between the dust cup 1 and the filter device 2. The dust cup 1 has an air inlet 11, and a baffle 12 is provided at the air inlet 11. The baffle 12 is used to make the airflow flowing in from the air inlet 11 flow along the circumference of the airflow cavity. A step 13 is provided on the inner wall of the dust cup 1, and the step 13 is located below the air inlet 11.

[0028] Each air inlet allows airflow to flow from the airflow chamber into the filter device; the baffle 12 is located at the air inlet 11 and can be integrally formed with the dust cup 1 or be a detachable structure; the dust cup 1 is also provided with a ring of steps 13 below the air inlet 11, preferably, the horizontal plane of the steps 13 is higher than the horizontal plane of the bottom end of the separator 23.

[0029] In practice, the air inlet 11 is sealed to the air duct 3 of the vacuum cleaner, and the dust cup 1 draws in the dust-air mixture through the air inlet 11. Figure 3 The arrows in the diagram indicate the airflow direction. The baffle 12 can be arranged along the tangent direction of the outer periphery of the filter device 2, or it can be arranged parallel to the tangent direction of the inner wall of the dust cup 1. Tangential air intake can be achieved at the air inlet 11, so that the dust-air mixture entering through the air inlet 11 flows circumferentially along the airflow cavity to form a cyclone airflow. The step 13 can reduce the space, thereby increasing the cyclone wind speed and improving the dust-air separation effect.

[0030] The dust-air separation structure provided in the above embodiment enables tangential air intake by setting a baffle 12 at the air inlet 11, and prevents dust from flowing back into the air inlet 11 when the vacuum cleaner is not working. At the same time, a step 13 is set below the air inlet 11 to accelerate the cyclone airflow, thereby increasing the centrifugal force on the dust and improving the dust-air separation efficiency. This reduces the amount of dust entering the filter material, reduces the need for cleaning and replacing the filter material, and overcomes the disadvantage of single-cone cyclone air separation structures that require frequent cleaning and replacement of the filter material. Moreover, compared with multi-cone separation, it can also improve the working efficiency of the vacuum cleaner.

[0031] In this embodiment, the filter device 2 includes filter media 21, filter media support 22, and separator 23; the upper part of the filter media support 22 is provided with a mounting groove for installing the filter media 21, and the bottom center of the filter media support 22 is provided with an air outlet pipe 221; the separator 23 is installed at the lower end of the filter media support 22, and the air outlet pipe 221 is inserted into the central through hole of the separator 23; the bottom edge of the separator 23 is provided with a ring of annular ribs 231.

[0032] The aforementioned multiple air inlets are located on the outer peripheral wall of the separator 23, forming an airflow cavity between the outer peripheral wall of the separator 23 and the interior of the dust cup 1. The filter material 21 can be one or more commonly used vacuum cleaner filter materials, such as filter cotton, filter screen, activated carbon, HEPA filter, etc. Activated carbon is preferred, as it can adsorb and degrade odors in the air during use, improving indoor air quality. The upper air outlet of the air outlet pipe 221 is connected to the lower part of the filter material 11, and the lower air inlet is located in the central through hole of the separator 23. Furthermore, the baffle 12 can be arranged along the tangential direction of the outer peripheral side of the separator 23; or, the baffle 12 can be arranged parallel to the tangential direction of the inner wall of the dust cup 1 to achieve tangential air intake of the air inlet 11.

[0033] In the above embodiment, the annular rib 231 at the bottom of the separator 23 can accelerate the cyclone to enhance the centrifugal force on the dust, thereby improving the separation efficiency of dust and gas and reducing the rotation of garbage at the bottom of the dust cup 1.

[0034] In this embodiment, the top of the separator 23 is attached to the bottom of the filter media support 22, and the bottom of the filter media support 22 is flush with the upper wall of the air inlet 11. The flush alignment of the bottom of the filter media support 22 with the upper wall of the air inlet 11 ensures that the air inlet 11 is directly opposite the separator 23, and an airflow cavity is formed between the outer peripheral wall of the separator 23 and the inner wall of the dust cup 1, which facilitates better dust and gas separation.

[0035] In this embodiment, the vertical height difference between the bottom end of the exhaust pipe 221 and the lower wall of the air inlet 11 is ±5mm. The air inlet of the exhaust pipe 221 is located at its bottom end. By maintaining a vertical height difference of ±5mm between the air inlet of the exhaust pipe 221 and the lower wall of the air inlet 11, the suction force on the airflow can be increased, which helps to further improve the dust-air separation efficiency. Preferably, the vertical distance from the bottom end of the exhaust pipe 221 to the lower wall of the air inlet 11 is 1mm.

[0036] In this embodiment, the distance between the end of the baffle 12 facing the separator 23 and the separator 23 is no greater than one-fifth of the shortest distance from the outer peripheral wall of the separator 23 to the inner wall of the dust cup 1. In specific implementation, in addition to forming tangential air intake at the air inlet 11, the baffle 12 can also prevent dust backflow when the vacuum cleaner is not working. In the above embodiment, by limiting the distance between the end of the baffle 12 and the separator 23 to a small range, dust backflow can be more effectively avoided.

[0037] In this embodiment, the bottom of the dust cup 1 is provided with an openable dust cup bottom cover 14. The dust cup bottom cover 14 can be opened to facilitate the user's emptying and cleaning of dust.

[0038] In this embodiment, the dust cup bottom cover 14 is connected to the dust cup 1 by a snap-fit, making installation and release very easy, and making cleaning and maintenance simple and quick.

[0039] In another embodiment, the present invention provides a vacuum cleaner including a dust-air separation structure as described in any of the above embodiments, which can improve the dust-air separation efficiency, thereby reducing the amount of dust entering the filter material and reducing the need for cleaning and replacing the filter material.

[0040] The dust-air separation structure and other components and operation of the vacuum cleaner according to the embodiments of this utility model are known to those skilled in the art and will not be described in detail here.

[0041] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] In the description of this specification, references to the terms "embodiment," "specific embodiment," "example," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example that is included in at least one embodiment or example of the present invention.

[0043] In this specification, the illustrative expressions of the terms used do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described may be combined with each other in any suitable manner in one or more embodiments or examples without interference or contradiction.

Claims

1. A dust-air separation structure, characterized by: The dust cup (1) and the filter device (2) arranged in the dust cup (1), the outer periphery of the filter device (2) is provided with a plurality of air inlet holes, and the air flow cavity is formed between the dust cup (1) and the filter device (2); The dust cup (1) is provided with an air inlet (11), and the air inlet (11) is provided with a baffle (12), the baffle (12) is used for making the air flow flowing from the air inlet (11) flow along the circumferential direction of the air flow cavity; A step (13) is arranged on the inner wall of the dust cup (1), and the step (13) is located below the air inlet (11).

2. A dust-air separation structure according to claim 1, characterized in that: The filter device (2) comprises filter material (21), filter material support (22) and separator (23); The upper part of the filter material support (22) is provided with a mounting groove for mounting the filter material (21), and the bottom part of the filter material support (22) is provided with an air outlet pipe (221); The separator (23) is installed at the lower end of the filter material support (22), the air outlet pipe (221) is inserted into the center through hole of the separator (23), and the bottom edge of the separator (23) is provided with a ring-shaped convex rib (231) outward.

3. A dust-air separation structure according to claim 2, characterized in that: The baffle (12) is arranged along the tangential direction of the outer periphery of the separator (23), or the baffle (12) is arranged parallel to the tangential direction of the inner wall of the dust cup (1).

4. A dust-air separation structure according to claim 2, characterized in that: The top of the separator (23) is attached to the bottom of the filter material support (22), and the bottom of the filter material support (22) is flush with the upper wall of the air inlet (11).

5. A dust gas separation structure according to claim 4, wherein: The vertical height difference between the bottom end of the air outlet pipe (221) and the lower wall of the air inlet (11) is ±5mm.

6. A dust-air separation structure according to claim 5, characterized in that: The vertical distance from the bottom end of the air outlet pipe (221) to the lower wall of the air inlet (11) is 1mm.

7. A dust-air separation structure according to claim 6, characterized in that: The distance between the end of the baffle (12) facing the separator (23) and the separator (23) is not greater than one fifth of the shortest distance from the outer periphery wall of the separator (23) to the inner wall of the dust cup (1).

8. A dust gas separation structure according to any one of claims 1 to 7, characterized in that: The bottom of the dust cup (1) is provided with an openable dust cup bottom cover (14).

9. A dust-air separation structure according to claim 8, characterized in that: The dust cup bottom cover (14) and the dust cup (1) are connected through buckling.

10. A vacuum cleaner characterised by: The dust gas separation structure comprises the dust cup (1) and the filter device (2) arranged in the dust cup (1), the outer periphery of the filter device (2) is provided with a plurality of air inlet holes, and the air flow cavity is formed between the dust cup (1) and the filter device (2).

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