Filter assembly and vacuum cleaner

Abstract

A filter assembly and a vacuum cleaner. The filter assembly matches one end of a housing (100) of a vacuum cleaner, and comprises a first filter (800) and a second filter (820) located downstream of the first filter (800) and sleeved on the outer side of the first filter (800), wherein the disassembly direction of the first filter (800) is the same as that of the second filter (820). The present invention has a simple structure and facilitates user operations, and is beneficial to the miniaturization of vacuum cleaner bodies and the noise reduction of air passages.

Description

Filter assembly and vacuum cleaner Technical Field

[0001] The invention relates to a filter assembly and a dust collector. Background Art

[0002] A vacuum cleaner is used for indoor cleaning, and includes a body with a handle, a dust cup detachably connected to the body, a motor arranged in the body and downstream of the dust cup, a front filter upstream of the motor, and a rear filter downstream of the motor. After the vacuum cleaner has been used for a period of time, dust accumulates on the front and rear filters, requiring the user to disassemble and clean them. However, the disassembly directions of such front and rear filters are opposite to each other, and they cannot be operated with one hand, resulting in inconvenience for the user. For such technology, reference can be made to Chinese invention patent CN106821137A.

[0003] Summary of the Invention

[0004] The object of the present invention is to provide a filter assembly and a vacuum cleaner with a simple structure and convenient operation by users, while being conducive to miniaturization of the machine body and noise reduction of the air duct.

[0005] The first technical solution of the present invention is: a filter assembly, which cooperates with one end of the shell of the vacuum cleaner, and includes: a first filter, and a second filter located downstream of the first filter and sleeved on the outside of the first filter, wherein the disassembly direction of the first filter and the second filter is the same, so that the user can operate it with one hand in the same direction.

[0006] On the basis of the first technical solution, the following subsidiary technical solutions are further included:

[0007] Preferably, the air intake area of ​​the first filter is smaller than the air intake area of ​​the second filter to reduce wind resistance and achieve rapid filtration.

[0008] Preferably, the first filter and the second filter are cylindrical HEPAs, and the air inlet ends are both peripheral to increase the air inlet area.

[0009] The second technical solution of the present invention is: a vacuum cleaner, comprising: a shell that can be placed on a horizontal plane, a dust cup that can move horizontally relative to the shell, a motor located downstream of the dust cup, a cyclone assembly located in the dust cup, and a filter assembly located between the dust cup and the motor and downstream of the cyclone assembly, wherein the filter assembly comprises: a first filter, and a second filter located downstream of the first filter and sleeved on the outside of the first filter, wherein the disassembly direction of the first filter and the second filter are the same.

[0010] On the basis of the second technical solution, the following subsidiary technical solutions are further included:

[0011] Preferably, the shell includes a vacuum part that accommodates the motor, a filter part that accommodates the filter assembly, a support part that supports the dust cup, and a handle part connected to the filter part at one end, wherein the dust cup is sealed with the end face of the second filter to facilitate user hand-holding and quick installation of the second filter.

[0012] Preferably, the central axis direction of the dust cup is parallel to the horizontal plane and coincides with the central axial direction of the motor to reduce air flow loss and optimize the air duct.

[0013] Preferably, it further includes a battery pack located at the other end of the handle portion, wherein the shell further includes a battery portion connected to the battery pack, and a diagonal support portion connected between the support portion and the battery portion, so as to achieve engineering mechanics optimization of holding.

[0014] Preferably, the filter portion includes a filter cartridge having a filter cartridge cavity and accommodating a first filter, a filter cavity located outside the filter cartridge and accommodating a second filter, and a plurality of air outlets connected to the filter cavity, so as to facilitate structural optimization and miniaturization of the body.

[0015] Preferably, the inner wall of the filter cartridge is provided with a locking protrusion, and the cyclone assembly is provided with a locking groove rotatably matched with the locking protrusion, so as to facilitate the installation and positioning of the cyclone assembly and the first filter.

[0016] Preferably, the cyclone assembly includes a mesh cover, a secondary cyclone located inside the mesh cover, and a partition located between the mesh cover and the lock groove, and the second filter includes a filter cavity located therein, a seal located on the end face and sealingly matched with the partition, and a mating groove connected to the filter cavity and mating with the anti-mock portion, so as to facilitate the installation of the second filter.

[0017] Preferably, the cyclone assembly at least partially extends into the filter cartridge cavity, and the horizontal projection of the air outlet at least partially overlaps with the horizontal projection of the first filter, so as to miniaturize the body.

[0018] The third technical solution of the present invention is: a method, characterized in that it comprises the following steps:

[0019] S1: The dust-laden airflow is introduced from the air inlet and enters the dust cup for the first stage of cyclone. The coarse dust is thrown to the surrounding of the cyclone assembly by centrifugal force, while the fine dust-laden airflow enters the mesh cover.

[0020] S2: The fine dust-laden airflow then enters the secondary cyclone for secondary cycloning, then horizontally enters the interior of the first filter, flows from the inside to the outside and enters the air inlet end of the motor, and then is discharged from the air outlet end of the motor;

[0021] S3: The air then flows in the opposite direction to the second filter, from the inside to the outside, and is finally discharged into the atmosphere through the air outlet.

[0022] On the basis of the third technical solution, the following subsidiary technical solutions are further included:

[0023] Preferably, the central axis direction of the dust cup is parallel to the horizontal plane and coincides with the central axial direction of the motor to allow horizontal air intake.

[0024] Preferably, the air inlet end of the motor is closer to the first filter relative to the air outlet end, wherein the second filter is located downstream of the first filter and is sleeved on the outside of the first filter to increase the length of the air duct.

[0025] Preferably, the dust cup is sealed with the end face of the second filter, one end of the dust cup is rotatably closed by the dust cup cover, and the other end is open to allow the cyclone assembly to be taken out.

[0026] The present invention has the advantages of simple structure and convenient operation by users, and is also beneficial to miniaturization of the machine body and noise reduction of the air duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] FIG1 is a perspective view of the dust cup and the housing separated from each other in the present invention;

[0029] FIG2 is a cross-sectional view of the present invention;

[0030] FIG3 is a perspective view of the cyclone assembly and the housing separated from each other in the present invention;

[0031] FIG4 is a perspective view of the filter assembly and the housing separated from each other in the present invention;

[0032] FIG5 is a diagram showing the airflow direction of FIG2 . DETAILED DESCRIPTION

[0033] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0034] In the description of the present invention, it should be understood that the terms "front", "rear", "left", "right", "up", "down", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0036] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections, or communication; direct or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0037] Embodiment: Referring to Figures 1-5, the present invention discloses a first embodiment of a filter assembly, which is mated to one end of a vacuum cleaner housing 100 and includes a first filter 800 and a second filter 820 located downstream of and sleeved around the first filter 800. The first and second filters 800 and 820 are designed to be removed in the same direction. The air intake area of ​​the first filter 800 is smaller than that of the second filter 820. Both the first and second filters 800 and 820 are cylindrical HEPA filters, with their air intake ends facing the circumferential side.

[0038] 1-5 , based on the first embodiment, the present invention discloses a second embodiment of a vacuum cleaner, which includes: a shell 100 that can be placed on a horizontal plane, a dust cup 200 that can move horizontally relative to the shell 100, a motor 300 located downstream of the dust cup 200, a cyclone assembly 400 located in the dust cup 200, a filter assembly located between the dust cup 200 and the motor 300 and downstream of the cyclone assembly 400, an unlocking member 600 that causes the dust cup 200 to be unlocked from the shell 100, and an unlocking lever 700 that cooperates with the unlocking member 600 and can rotate the dust cup cover of the dust cup 200 to open.

[0039] The housing 100 includes a vacuum portion 120 having a vacuum chamber 122 and accommodating the motor 300, a filter portion 140 connected to the vacuum portion 120, a support portion 150 supporting the dust cup 200, and a handle portion 190 connected to the filter portion 140 at one end.

[0040] The central axis of the dust cup 200 is parallel to the horizontal plane and coincides with the central axial direction of the motor 300. The dust cup 200 includes an air inlet portion 262 that is partially housed by the support portion 150 and can reciprocate relative to it. The dust cup 200 is sealed to the end surface of the second filter 820. One end of the dust cup 200 is rotatably closed by the dust cup cover, while the other end is open to allow the cyclone assembly 400 to be removed.

[0041] The motor 300 is arranged in a horizontal direction, with its air inlet end being closer to the first filter 800 than the air outlet end. The motor 300 is preferably a brushless DC motor.

[0042] The cyclone assembly 400 includes a mesh cover 420 , a secondary cyclone 440 located in the mesh cover 420 , a locking slot 422 located at one end of the mesh cover 420 , and a partition 460 located between the mesh cover 420 and the locking slot 422 .

[0043] The filter assembly includes: a first filter 800, and a second filter 820 located downstream of the first filter 800 and mounted on the outside of the first filter 800, wherein the first filter 800 and the second filter 820 have the same disassembly direction. The filter portion 140 includes a filter cartridge 142 that accommodates the first filter 800, a filter cavity 144 located outside the filter cartridge 142 and accommodating the second filter 820, a foolproof portion 145 disposed on the outside of the filter cartridge 142, a locking protrusion 146 disposed on the inner wall of the filter cartridge 142 and rotatably locked with the locking groove 422, and a plurality of air outlet holes 148 communicating with the filter cavity 144. The filter cartridge 142 is provided with a filter cartridge cavity 143. A handle 804 is provided at one end of the first filter 800, which can be disposed adjacent to the cyclone assembly. The handle 804 has air inlets on both sides that allow air to pass through. Second filter 820 includes a filter cavity 822 therein, a seal 823 located on an end surface and sealingly engaged with partition 460, and a mating groove 824 communicating with filter cavity 822 and mating with foolproof portion 145. First filter 800 and second filter 820 are preferably cylindrical HEPAs, with both air inlet ends on the periphery, and airflow direction from inside to outside.

[0044] This embodiment further includes a battery pack 500 located at the other end of the handle portion 190 , wherein the housing further includes a battery portion 160 connected to the battery pack 500 , and a diagonal bracing portion 170 connected between the support portion 150 and the battery portion 160 .

[0045] During operation, the dust-laden airflow is introduced from the air inlet 262 and enters the dust cup 200 for the first stage cyclone. The large dust is thrown to the surrounding of the cyclone assembly 400 by centrifugal force, and the fine dust-laden airflow enters the mesh cover 420, and then enters the secondary cyclone 440 for the secondary cyclone, and then enters the interior of the first filter 800 horizontally, flows from the inside to the outside and enters the air inlet end of the motor 300, and then is discharged from the air outlet end of the motor 300, and then flows to the second filter 820 in the opposite direction, flows from the inside to the outside, and finally is discharged to the atmosphere through the air outlet 148. Since the air duct after the motor 300 is extended in the opposite direction, its length is greater than the length of the motor 300, thereby reducing the noise of the airflow.

[0046] The present invention has a simple structure and is convenient for users to disassemble the filter assembly in the same direction, and is also beneficial to the miniaturization of the machine body and the noise reduction of the air duct.

[0047] Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not limited to the embodiments shown herein, but is to be construed in the widest manner consistent with the principles and novel features disclosed herein.

Claims

1. A filter assembly, which cooperates with one end of a housing (100) of a vacuum cleaner, characterized in that It includes: A first filter (800), and a second filter (820) located downstream of the first filter (800) and sleeved on the outside of the first filter (800), wherein the first filter (800) and the second filter (820) have the same disassembly direction.

2. The filter assembly according to claim 1, characterized in that: The air intake area of ​​the first filter (800) is smaller than the air intake area of ​​the second filter (820).

3. The filter assembly according to claim 1, characterized in that: The first filter (800) and the second filter (820) are cylindrical HEPA filters, and the air inlet ends are both peripheral.

4. A vacuum cleaner, characterized in that It includes: A housing (100) that can be placed on a horizontal plane, a dust cup (200) that can move horizontally relative to the housing (100), a motor (300) located downstream of the dust cup (200), a cyclone assembly (400) located in the dust cup (200), and a filter assembly located between the dust cup (200) and the motor (300) and downstream of the cyclone assembly (400), wherein the filter assembly comprises: a first filter (800), and a second filter (820) located downstream of the first filter (800) and sleeved on the outside of the first filter (800), wherein the first filter (800) and the second filter (820) have the same disassembly direction.

5. The vacuum cleaner according to claim 4, characterized in that: The housing (100) comprises a vacuum portion (120) for accommodating a motor (300), a filter portion (140) for accommodating a filter assembly, a support portion (150) for supporting a dust cup (200), and a handle portion (190) connected to the filter portion (140) at one end, wherein the dust cup (200) is sealed with an end surface of a second filter (820).

6. The vacuum cleaner according to claim 5, characterized in that: The central axis direction of the dust cup (200) is parallel to the horizontal plane and coincides with the central axial direction of the motor (300).

7. The vacuum cleaner according to claim 4, 5 or 6, characterized in that: The filter portion (140) comprises a filter cartridge (142) having a filter cartridge cavity (143) and accommodating a first filter (800), a filter cavity (144) located outside the filter cartridge (142) and accommodating a second filter (820), and a plurality of air outlet holes (148) connected to the filter cavity (144).

8. The vacuum cleaner according to claim 7, characterized in that: The inner wall of the filter cartridge (142) is provided with a locking protrusion (146), and the cyclone assembly (400) is provided with a locking groove (422) rotatably matched with the locking protrusion (146).

9. The vacuum cleaner according to claim 8, characterized in that: The cyclone assembly (400) includes a mesh cover (420), a secondary cyclone (440) located in the mesh cover (420), and a partition (460) located between the mesh cover (420) and the lock groove (422), and the second filter (820) includes a filter cavity (822) located therein, a seal (823) located on the end surface and sealingly matched with the partition (460), and a matching groove (824) connected to the filter cavity (822) and matched with the anti-foolproof part (145).

10. The vacuum cleaner according to claim 9, characterized in that: The cyclone assembly (400) at least partially extends into the filter cartridge cavity (143), and the projection of the air outlet hole (148) in the horizontal direction at least partially overlaps with the projection of the first filter (800) in the horizontal direction.

11. A method, characterized in that It includes the following steps: S1: The dust-laden airflow is introduced from the air inlet (262) and enters the dust cup (200) to undergo the first stage of cyclone, where large dust particles are thrown around the cyclone assembly (400) by centrifugal force, and the fine dust-laden airflow enters the mesh cover (420); S2: The fine dust-containing airflow then enters the secondary cyclone (440) for secondary cyclone, and then enters the interior of the first filter (800) horizontally, from the inside to the outside. Flows into the air inlet of the motor (300), and then is discharged from the air outlet of the motor (300); S3: The airflow then flows in the opposite direction to the second filter (820), flowing from the inside to the outside, and finally discharged to the atmosphere through the air outlet (148).

12. The method according to claim 11, characterized in that: The central axis direction of the dust cup (200) is parallel to the horizontal plane and coincides with the central axial direction of the motor (300).

13. The method according to claim 12, characterized in that: The air inlet end of the motor (300) is closer to the first filter (800) than the air outlet end, wherein the second filter (820) is located downstream of the first filter (800) and is sleeved on the outside of the first filter (800).

14. The method according to claim 12, characterized in that: The dust cup (200) is sealed with the end surface of the second filter (820), one end of the dust cup (200) is rotatably closed by the dust cup cover, and the other end is open to allow the cyclone assembly (400) to be taken out.

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