Cyclone separation device and handheld dust collector

Abstract

The cyclone separation device comprises a dust cup with the hollow interior and a separator arranged in the dust cup, the separator is provided with a longitudinal axis extending in the vertical direction, and a first-stage cyclone separation cavity with the longitudinal axis as the rotating axis is formed between the separator and the inner wall face of the dust cup. The separator comprises a separator body, a mesh filtering wall and a dust blocking component located on the lower side of the mesh filtering wall, the separator body provides a first supporting part, the dust blocking component comprises an umbrella part, and the lower end of the mesh filtering wall and the umbrella part are supported on the upper portion and the lower portion of the first supporting part respectively; the umbrella part is a flexible part and can be manually operated by a user to deform from an unfolded state to a folded state; in the unfolding state, at least part of the umbrella part protrudes outwards in the radial direction relative to the first supporting part; in the folded state, the umbrella part shrinks inwards in the radial direction relative to the first supporting part. A user can stroke down entanglements such as hair from the umbrella part in the folded state, and cleaning is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of surface cleaning equipment, in particular to a cyclone separation device and a handheld vacuum cleaner with the cyclone separation device. Background Art

[0002] A handheld vacuum cleaner typically consists of a body with a handle, a cyclonic separator, a suction motor, and a battery module. The cyclonic separator includes a dust cup and a separator mounted within the dust cup. The separator separates dust and air from the dust-laden airflow. When the handheld vacuum cleaner is powered on, the suction motor generates a negative pressure airflow from the suction nozzle into the dust cup. The dust-laden airflow on the surface to be cleaned enters the dust cup through the suction nozzle. Dust particles in the dust-laden airflow are separated from the air by the separator and then collected in the dust cup. The air is then drawn away by the suction motor and discharged into the environment. A conventional separator, when installed in a dust cup, typically forms a two-layer cyclonic separation chamber. Inside the separator is a cyclonic separation cone. Dust and air entering the dust cup spiral around the outer periphery of the separator's metal filter, blocking larger dust particles. Smaller dust particles and air pass through the metal filter and enter the secondary cyclonic separation chamber, where they spiral around the inner periphery of the cyclonic separation cone. Smaller dust particles are filtered out by a filter mounted on the separator. Air exits the separator and is drawn away by a fan and discharged into the environment. When the handheld vacuum cleaner is powered off, some dust particles adhering to the outer periphery of the metal filter fall down along the metal filter's outer wall under the action of gravity. Fine dust particles tend to accumulate at the bottom of the metal filter. After prolonged use, hair can become entangled in the metal filter's outer periphery, clogging the mesh. Dust also easily accumulates at the bottom of the metal filter, making it difficult to clean and reducing separator efficiency, impacting the handheld vacuum cleaner's cleaning performance. Utility Model Content

[0003] In order to solve the above technical problems, the purpose of the present invention is to provide a cyclone separation device that is convenient for cleaning the separator and a handheld vacuum cleaner having the cyclone separation device.

[0004] On the one hand, the utility model provides a cyclone separation device, including a dust cup with a hollow interior and a separator placed in the dust cup, the separator having a longitudinal axis extending in the up and down directions, and a first-stage cyclone separation chamber with the longitudinal axis as the rotation axis is formed between the separator and the inner wall surface of the dust cup, the separator including a separator body, a mesh filter wall and a dust-blocking member located on the lower side of the mesh filter wall, the separator body provides a first support portion, the dust-blocking member includes an umbrella portion, the lower end portion of the mesh filter wall and the umbrella portion are respectively supported on the upper and lower portions of the first support portion; the umbrella portion is a flexible member and is constructed to be able to be manually deformed from an expanded state to a collapsed state by a user; in the expanded state, at least part of the umbrella portion protrudes radially outward relative to the first support portion; in the collapsed state, the umbrella portion contracts radially inward relative to the first support portion.

[0005] According to one embodiment of the present invention, the first support portion and the umbrella portion both extend in a circumferential direction around the longitudinal axis, and the radial distance from the outer peripheral wall of the first support portion to the longitudinal axis is greater than or equal to the radial distance from the umbrella portion in the folded state to the longitudinal axis.

[0006] According to an embodiment of the present invention, the umbrella portion is wrinkle-shaped.

[0007] According to an embodiment of the present invention, the dust shielding component includes a connecting portion, the umbrella portion intersects with an outer peripheral portion of the connecting portion, and the connecting portion is fixed to the lower portion of the first supporting portion via a fixing piece.

[0008] According to an embodiment of the present invention, the connecting portion is made of a hard material.

[0009] According to one embodiment of the present invention, the radial distance from the outer peripheral wall surface of the first support portion to the longitudinal axis is greater than or equal to the radial distance from the outer peripheral edge portion of the connecting portion to the longitudinal axis.

[0010] According to one embodiment of the present invention, the separator includes one or more cyclone cones located on the inner side of the mesh filter wall and an air flow distributor for distributing the air flow flowing out of the mesh filter wall to the one or more cyclone cones, a second-stage cyclone separation chamber is formed inside each of the cyclone cones and an ash drop port connected to the corresponding second-stage cyclone separation chamber is provided at the lower part of the cyclone cone, the separator body provides an ash collecting portion for collecting dust falling from the ash drop port, and the upper end of the ash collecting portion intersects with the first support portion.

[0011] According to one embodiment of the present invention, the separator body provides a plurality of second support parts, which are arranged circumferentially and located above the first support part, and the mesh filter wall is engaged with each of the second support parts. A portion of the plurality of second support parts is located outside the mesh filter wall, and another portion is located inside the mesh filter wall.

[0012] According to an embodiment of the present invention, the outer wall surface of the second support portion located outside the mesh filter wall is flush with the outer wall surface of the first support portion.

[0013] On the other hand, the present invention also provides a handheld vacuum cleaner, comprising a body with a gripping handle, a suction motor and a battery module fixed to the body, and a cyclone separation device as described in any one of the above technical solutions.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] The separator provides a first support portion, and supports the lower end of the mesh filter wall and the umbrella portion of the dust shield member at the upper and lower portions of the first support portion. The umbrella portion of the dust shield member is configured as a flexible member and is configured to be manually deformable from an expanded state to a collapsed state by a user. In the expanded state, at least a portion of the umbrella portion protrudes radially outward relative to the first support portion, and in the collapsed state, the umbrella portion retracts radially inward relative to the first support portion. This allows the user to remove hair or other entanglements entangled on the outer peripheral wall of the mesh filter wall from the collapsed umbrella portion, facilitating cleaning of the mesh filter wall.

[0016] Accordingly, the handheld vacuum cleaner with the cyclone separation device is easier to clean and has a better cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a perspective view of a handheld vacuum cleaner according to an embodiment of the present invention;

[0018] Figure 2 yes Figure 1 A cross-sectional view of the handheld vacuum cleaner shown in ;

[0019] Figure 3 yes Figure 2 A partial enlarged view of point A shown in FIG;

[0020] Figure 4 yes Figure 2 A perspective view of a separator of the handheld vacuum cleaner shown in FIG;

[0021] Figure 5 is a cross-sectional view of a handheld vacuum cleaner according to another embodiment of the present invention;

[0022] Figure 6 yes Figure 5 A partial enlarged view of point B shown in FIG;

[0023] Figure 7 This is a perspective view of a separator according to another embodiment of the present invention;

[0024] The accompanying drawings are numerals as follows:

[0025] 100. Handheld vacuum cleaner;

[0026] 10. Machine body; 11. Handle; 12. Suction nozzle;

[0027] 20. Suction motor;

[0028] 30. Battery module;

[0029] 40. Cyclone separation device; 41. Dust cup; 42. Separator; L, longitudinal axis; 421. Separator body; 4211. First support portion; 4212. Ash collecting portion; 4213. Second support portion; 4214. Mounting portion; 422. Mesh filter wall; 423. Dust shielding member; 4231. Umbrella portion; 4232. Connecting portion; 4233. Fixing member; 424. First-stage cyclone separation chamber; 425. Cyclone cone; 4251. Ash dropout port; 426. Air flow distributor; 427. Second-stage cyclone separation chamber; 428. Filter member. DETAILED DESCRIPTION

[0030] It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, a person skilled in the art can propose a variety of interchangeable structural methods and implementation methods. Therefore, the following specific embodiments and drawings are only illustrative of the technical solution of the present invention and should not be regarded as the entire present invention or as a limitation or restriction of the technical solution of the present invention.

[0031] according to Figures 1 to 4 As shown, one embodiment of the present invention provides a handheld vacuum cleaner 100, which includes a body 10 having a handle 11, a suction motor 20 fixed to the body 10, a battery module 30, and a cyclonic separator 40. The body 10 is provided with a suction nozzle 12 for sucking dust-laden air from the surface to be cleaned. The suction nozzle 12, the cyclonic separator 40, and the suction motor 20 are sequentially connected by airflow. The battery module 30 is electrically connected to the suction motor 20 and can provide the required power to the suction motor 20 and necessary control components (such as the electronic control board).

[0032] When the handheld vacuum cleaner 100 is turned on, the suction motor 20 generates a negative pressure airflow from the suction nozzle 12 into the interior of the body 10, thereby sucking the dust-laden airflow on the surface to be cleaned into it, and the dust and air in the dust-laden airflow are separated by the cyclone separation device 40. The dust is collected in the dust cup 41 of the body 10, and the air is sucked away by the suction motor 20 and discharged into the external environment.

[0033] Combine Figure 2 and Figure 4 As shown, the cyclone separation device 40 includes a dust cup 41 with a hollow interior and a separator 42 installed in the dust cup 41. The separator 42 has a longitudinal axis L extending in the up-down direction, and a first-stage cyclone separation chamber 424 with the longitudinal axis L as the rotation axis is formed between the separator 42 and the inner wall surface of the dust cup 41. The separator 42 includes a separator body 421, a mesh filter wall 422, and a dust-blocking member 423 located on the lower side of the mesh filter wall 422. The separator body 421 provides a first support portion 4211, and the dust-blocking member 423 includes an umbrella portion 4231. The lower end portion of the mesh filter wall 422 and the umbrella portion 4231 are supported on the upper and lower portions of the first support portion 4211, respectively. The separator 42 includes a cyclone cone 425 located inside the mesh filter wall 422 and an airflow distributor 426 for distributing airflow from the mesh filter wall 422 into the cyclone cone 425. A second-stage cyclone separation chamber 427 is formed within the cyclone cone 425. An ash dropout port 4251 is provided at the lower portion of the cyclone cone 425, communicating with the second-stage cyclone separation chamber 427. The separator body 421 includes an ash collection portion 4212 for collecting dust falling from the ash dropout port 4251. The upper end of the ash collection portion 4212 intersects with the first support portion 4211. When the separator 42 is placed within the dust cup 41, the lower end of the ash collection portion 4212 abuts the inner bottom wall of the dust cup 41. In other embodiments, to facilitate efficient separation of air and dust, the separator 42 may include multiple cyclone cones 425, such as two, three, or more, inside the mesh filter wall 422.

[0034] After the handheld vacuum cleaner 100 sucks the dust-laden airflow through the suction nozzle 12, the dust-laden airflow enters the first-stage cyclone separation chamber 424 between the dust cup 41 and the separator 42. The dust-laden airflow rotates along the longitudinal axis L and makes a spiral circular motion along the outer peripheral wall of the mesh filter wall 422. Most of the dust particles are filtered out by the mesh filter wall 422, and fall to the bottom of the dust cup 41 along the umbrella portion 4231 of the dust shielding member 423 and are blocked by the umbrella portion 4231. The air and a small part of the dust particles pass through the mesh filter wall 422. The air passes through the porous filter wall 422 and is distributed to the second-stage cyclone separation chamber 427 in the cyclone cone 425 through the air flow distributor 426. A small portion of dust particles and air entering the second-stage cyclone separation chamber 427 rotates along the longitudinal axis L and makes a spiral circular motion along the inner circumferential wall of the cyclone cone 425. The dust particles in this portion are filtered out by the filter component 428 (such as a HEPA filter) above the cyclone cone 425, and the air is sucked away from above by the suction motor 20 and discharged into the external environment.

[0035] After prolonged use of the handheld vacuum cleaner 100, hair and other slender objects can easily become entangled around the outer periphery of the mesh filter wall 422, causing clogging of the mesh filter wall 422 and reducing the air-ash separation effect, making it difficult to clean. To address this technical issue, the umbrella portion 4231 of the dust shield 423 is configured as a flexible member that can be manually deformed from an extended state to a retracted state by the user. In the expanded state, at least part of the umbrella portion 4231 protrudes radially outward relative to the first support portion 4211, thereby blocking the dust at the bottom of the dust cup 41. In the folded state, the umbrella portion 4231 contracts radially inward relative to the first support portion 4211, so that after the user takes the separator 42 out of the dust cup 41, the user can manually operate the umbrella portion 4231 to deform the umbrella portion 4231 from the open state to the folded state. In this way, the user can pull down the hair and other slender objects wrapped around the outer wall of the mesh filter wall 422 along the folded umbrella portion 4231, so as to facilitate the cleaning of the mesh filter wall 422.

[0036] Furthermore, both the first support portion 4211 and the umbrella portion 4231 extend circumferentially along the longitudinal axis L, and the radial distance between the outer peripheral wall of the first support portion 4211 and the longitudinal axis L is greater than or equal to the radial distance between the umbrella portion 4231 in the collapsed state and the longitudinal axis L. Thus, when the umbrella portion 4231 is collapsed, the outer diameter of the collapsed umbrella portion 4231 is smaller than the outer diameter of the first support portion 4211. This allows hair and other slender objects entangled on the outer peripheral wall of the mesh filter wall 422 to be more easily removed from the umbrella portion 4231, making cleaning more convenient.

[0037] Combine Figure 3As shown, to facilitate the installation of the dust shield member 423 on the separator body 421, the dust shield member 423 includes a connecting portion 4232, an umbrella portion 4231 intersecting with the outer peripheral portion of the connecting portion 4232, and the connecting portion 4232 being fixedly connected to the lower portion of the first support portion 4211 via a fixing member 4233. Specifically, in this embodiment, the fixing member 4233 is fixedly connected to the bottom of the first support portion 4211, a slot is constructed between the first support portion 4211 and the fixing member 4233, and one end of the umbrella portion 4231 is constructed with a snap-fit portion, which is locked in the slot. The connecting portion 4232 can be made of a hard material, such as hard plastic, so that one end of the umbrella portion 4231 is more firmly connected to the lower portion of the first support portion 4211. In other embodiments, the entire dust shield member 423 can also be made of a flexible material, such as silicone material, without specific limitation.

[0038] Furthermore, to facilitate the user's removal of entangled hair and other elongated objects from the surface of the mesh filter wall 422, in this embodiment, the separator body 421 is an integrally formed frame member, the mesh filter wall 422 is a metal filter, and the separator body 421 is provided with a plurality of second support portions 4213. The upper ends of the plurality of second support portions 4213 are connected to the mounting portion 4214 of the separator body 421, and the lower ends of the plurality of second support portions 4213 are connected to the first support portion 4211 of the separator body 421. The plurality of second support portions 4213 are arranged circumferentially and positioned above the first support portion 4211. The mesh filter wall 422 is circumferentially passed through the plurality of second support portions 4213, so that the mesh filter wall 422 engages with each second support portion 4213. The plurality of second support portions 4213 are partially positioned outside the mesh filter wall 422 and partially positioned inside the mesh filter wall 422. The multiple second support parts 4213 located on the outside of the mesh filter wall 422 can support the hair and other slender objects wrapped around the outer peripheral surface of the mesh filter wall 422 by the second support parts 4213. A gap is formed between the hair and other slender objects and the surface of the mesh filter wall 422 for users to operate (such as inserting fingers or hooks into the gap to stroke or hook the hair), thereby making it easier for users to stroke the hair off the mesh filter wall 422 and cleaning it more easily.

[0039] In other embodiments, the mesh filter wall 422 may be integrally formed with the separator body 421. The plurality of second support portions 4213 may all be located on the outer surface of the mesh filter wall 422, that is, the mesh filter wall 422 is nested downwardly within the separator body 421 from above. Alternatively, the plurality of second support portions 4213 may be configured to have perforations / passageways through which the mesh filter wall 422 passes, and the mesh filter wall 422 circumferentially passes through the plurality of second support portions 4213, with each second support portion 4213 positioned partially on the outer circumferential surface of the mesh filter wall 422 and partially on the inner circumferential surface of the mesh filter wall 422. This is not particularly limited.

[0040] Furthermore, in order to facilitate the removal of slender objects such as hair wrapped around the outer peripheral surface of the mesh filter wall 422 from the surface of the second support part 4213, the outer wall surface of the second support part 4213 located outside the mesh filter wall 422 is flush with the outer wall surface of the first support part 4211.

[0041] according to Figure 5 and Figure 6 As shown, in another embodiment of the present invention, to facilitate the removal of hair and other slender objects entangled on the outer circumference of the mesh filter wall 422 from the umbrella portion 4231, the radial distance between the outer circumference of the first support portion 4211 and the longitudinal axis L is greater than or equal to the radial distance between the outer circumference of the connecting portion 4232 and the longitudinal axis L. In other words, the connecting portion 4232 of the umbrella portion 4231 is positioned closer to the longitudinal axis L, such that the outer diameter of the connecting portion 4232 of the umbrella portion 4231 is less than or equal to the outer diameter of the first support portion 4211. Thus, when a user operates the umbrella portion 4231 to deform it from an expanded state to a collapsed state, hair and other slender objects entangled on the outer circumference of the mesh filter wall 422 can be more easily removed from the umbrella portion 4231, making cleaning easier.

[0042] according to Figure 7 As shown, in another embodiment of the present invention, the shape of the umbrella portion 4231 can be set to be wrinkled, so that the user can operate the umbrella portion 4231 more easily, so that when the umbrella portion 4231 is deformed from the expanded state to the collapsed state, the umbrella portion 4231 can be quickly folded along the wrinkles.

[0043] The technical scope of the present invention is not limited to the contents of the above description. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical concept of the present invention, and these deformations and modifications should all fall within the scope of protection of the present invention.

Claims

1. A cyclone separation device, comprising a dust cup with a hollow interior and a separator placed in the dust cup, the separator having a longitudinal axis extending in the up-down direction, a first-stage cyclone separation chamber with the longitudinal axis as the rotation axis is formed between the separator and the inner wall surface of the dust cup, the separator comprising a separator body, a mesh filter wall and a dust-blocking member located on the lower side of the mesh filter wall, the separator body providing a first support portion, the dust-blocking member comprising an umbrella portion, the lower end portion of the mesh filter wall and the umbrella portion being supported on the upper and lower portions of the first support portion, respectively; characterized in that The umbrella portion is a flexible member and is constructed to be deformable from an expanded state to a collapsed state by manual operation of a user; in the expanded state, at least part of the umbrella portion protrudes radially outward relative to the first support portion; in the collapsed state, the umbrella portion contracts radially inward relative to the first support portion.

2. The cyclone separation device according to claim 1, characterized in that The first support portion and the umbrella portion both extend in a circumferential direction around the longitudinal axis, and a radial distance from the outer peripheral wall of the first support portion to the longitudinal axis is greater than or equal to a radial distance from the umbrella portion in the folded state to the longitudinal axis.

3. The cyclone separation device according to claim 1, characterized in that The umbrella portion is in a wrinkle shape.

4. The cyclone separation device according to claim 1, characterized in that The dust shielding component includes a connecting portion, the umbrella portion intersects with the outer peripheral portion of the connecting portion, and the connecting portion is fixed to the lower portion of the first supporting portion via a fixing piece.

5. The cyclone separation device according to claim 4, characterized in that: The connecting part is made of hard material.

6. The cyclone separation device according to claim 4, characterized in that A radial distance from the outer peripheral wall surface of the first supporting portion to the longitudinal axis is greater than or equal to a radial distance from the outer peripheral edge of the connecting portion to the longitudinal axis.

7. The cyclone separation device according to claim 1, characterized in that The separator includes one or more cyclone cones located on the inner side of the mesh filter wall and an air flow distributor for distributing the air flow flowing out of the mesh filter wall to the one or more cyclone cones. A second-stage cyclone separation chamber is formed inside each cyclone cone and an ash drop port connected to the corresponding second-stage cyclone separation chamber is provided at the lower part of the cyclone cone. The separator body provides an ash collecting portion for collecting dust falling from the ash drop port, and the upper end of the ash collecting portion intersects with the first support portion.

8. The cyclone separation device according to claim 1, characterized in that The separator body provides multiple second support parts, which are arranged circumferentially and located above the first support part. The mesh filter wall is engaged with each of the second support parts. A part of the multiple second support parts is located on the outside of the mesh filter wall, and another part is located on the inside of the mesh filter wall.

9. The cyclone separation device according to claim 8, characterized in that The outer wall surface of the second support portion located outside the mesh filter wall is flush with the outer wall surface of the first support portion.

10. A handheld vacuum cleaner, characterized in that: The invention comprises a body with a gripping handle, a suction motor and a battery module fixed on the body, and a cyclone separation device as claimed in any one of claims 1 to 9.

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