A front-mounted air guiding and ash storage device and its vacuum cleaner

Abstract

The present invention relates to a front-mounted air guiding and dust storage device and a vacuum cleaner in the technical field of vacuum cleaners, including a dust storage grid, a filter cartridge, and a diversion cover; the filter cartridge is a frustum-shaped cylindrical structure, including an upper cover, a HEPA filter paper cylinder, and a lower cover connected in sequence; the dust storage grid is an open cabinet, the dust storage grid surrounds the HEPA filter paper cylinder, and the dust storage grid fits the lower end face of the upper cover; the diversion cover includes a flow dividing plate and an outer cover, the flow dividing plate is frustum-shaped, the outer cover is provided with a notch adapted to the outer diameter of the flow dividing plate extending outward from the center point, and the flow dividing plate is connected in the notch; the outer cover is connected to the lower cover, and the apex of the flow dividing plate is far from the end face of the lower cover. The air guiding and dust storage device provided by the present invention realizes secondary separation including HEPA filter paper cylinder filtration by changing the flow rate and flow direction of the airflow with dust, reduces the filtration amount of the HEPA filter paper cylinder and the accumulation amount of surface dust, basically solves the problem that the HEPA filter paper cylinder is prone to blockage due to the active increase in the dust amount, and improves the dust-air separation effect.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum cleaners, and specifically, to a front-mounted air guiding and dust storing device and a vacuum cleaner thereof. Background Art

[0002] Due to the limitation of the body space of the portable vacuum cleaner, the main body is made smaller in order to be more portable, resulting in a small dust collecting device and a small dust collecting capacity. In places with a lot of dust, it is often easy to cause blockage because a large amount of dust or large-particle dust enters the dust collecting device.

[0003] The existing air inlet methods of vacuum cleaners are divided into the following two types: one is to inlet air along the normal direction of the central axis of the dust storage cavity or perpendicular to the filtering device, and the other is to inlet air along the axial direction of the central axis of the dust storage cavity or parallel to the filtering device. The vacuum cleaner arranged based on the method of inletting air along the axial direction of the central axis of the dust storage cavity or parallel to the filtering device is often light and easy to operate, but the dust-gas separation efficiency is often not ideal or even low. There are two reasons for this: one is that it only relies on the filtering area of the filtering device itself for filtering, and the effect is limited; the other is that since there is always air flow passing through the bottom of the dust storage chamber during the operation of the machine, dust cannot be stored during the operation of the machine.

[0004] After searching the prior art, it is found that the Chinese utility model patent with the publication number of CN209059042U discloses a vacuum cleaner, belonging to the technical field of cleaning equipment, which solves the problem that there are too many structures on the handle part or the outer contour of the floor brush is too high when the existing portable vacuum cleaners are used in combination, making the use less convenient. The vacuum cleaner in this case includes a floor brush and a handle part. The floor brush includes a cyclone separation device, and the handle part includes a portable vacuum cleaner main body. In this case, a cyclone separation device including a cyclone separation chamber and a dust collection chamber is detachably arranged in the floor brush, and the cyclone separation chamber is formed in a cylindrical shape. After the dust-containing air flow passes through the cyclone separation chamber, dust can be thrown into the dust collection chamber under the action of centrifugal force. The structure of this patent is complex and requires an independent design of the corresponding separation chamber. Summary of the Invention

[0005] Aiming at the defects in the prior art, the purpose of the present invention is to provide a front-mounted air guiding and dust storing device and a vacuum cleaner thereof.

[0006] According to a front-mounted air guiding and dust storing device provided by the present invention, it includes a dust storage grid, a filter cylinder and a diversion cover;

[0007] The filter cylinder is a frustum-shaped cylinder structure, including an upper cover, a HEPA filter paper cylinder and a lower cover which are connected in sequence;

[0008] The dust storage grid is an open cabinet, the dust storage grid surrounds the HEPA filter paper cylinder, and the dust storage grid fits the lower end face of the upper cover;

[0009] The fairing includes a flow splitter and an outer cover. The flow splitter is frustum-shaped. The outer cover is provided with a notch adapted to the outer diameter of the flow splitter along the center point outward, and the flow splitter is connected within the notch.

[0010] The outer cover is connected to the lower cover, and the apex of the frustum of the flow splitter is away from the end face of the lower cover.

[0011] In some embodiments, the outer cover is provided with elastic hooks. The number of the elastic hooks is greater than or equal to 2. The elastic hooks are snap-connected to the lower cover, and the elastic hooks can rotate around the lower cover.

[0012] In some embodiments, the outer cover is provided with spiral vanes. The spiral vanes are located between the outer edge of the flow splitter and the outer edge of the outer cover. A flow guiding port is provided at the end of the spiral vanes for introducing air flow.

[0013] In some embodiments, there are multiple groups of the spiral vanes and the flow guiding ports provided on the outer cover.

[0014] In some embodiments, the ash storage grid is frustum-shaped with convergence along the circumference of the Hepa filter cartridge, and multiple frustum-shaped ash storage grids are connected into a ring.

[0015] In some embodiments, the ash storage grid is provided with a notch. The notch is an L-shaped notch formed by the inner concave of the bottom corner of the ash storage grid and compressed a certain distance along the radial direction of the filter barrel. The distance that the notch is compressed along the radial direction of the filter barrel is less than the side height of the ash storage grid, and the notch is located at one end away from the upper cover.

[0016] In some embodiments, the outer edge of the flow splitter extends to the inner side of the outer edge of the outer cover, and the distance between the outer edge of the outer cover and the inner surface of the housing sleeved outside the outer cover is 2 - 12 mm.

[0017] In some embodiments, the ash storage grid is an annular groove-shaped structure with a right trapezoidal cross-section, and the lower bottom edge of the ash storage grid is adjacent to the lower end face of the upper cover.

[0018] In some embodiments, the cone angle of the flow splitter is 20° - 160°.

[0019] The present invention also provides a vacuum cleaner adopting the above-mentioned front-mounted air guiding and ash storage device.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The air guiding and ash storing device provided by the present invention realizes secondary separation including the filtration of a Hepa filter cartridge by changing the flow rate and flow direction of the airflow with dust, reduces the filtration amount of the Hepa filter cartridge and the accumulation amount of the displayed dust, basically solves the problem that the Hepa filter cartridge is prone to blockage due to the positive increase in the dust amount, and improves the dust-gas separation effect.

[0022] 2. The air guiding and ash storing device provided by the present invention realizes the purpose of dust-gas separation by centrifugal force through the setting of an impeller-type and relatively rotatable air guiding cover structure, and obtains a better dust-gas separation effect.

[0023] 3. The air guiding and ash storing device provided by the present invention makes the flow rate of the airflow with dust enter the dust-gas separation chamber faster through the gap between the outer cover of the air guiding cover and the outer shell, increases the collision force between the dust and the corresponding structural plate of the storage grid, and thus achieves the dust-gas separation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Other features, objects and advantages of the present invention will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0025] Figure 1 It is a schematic diagram of the overall structure of the front-mounted air guiding and ash storing device of the present invention;

[0026] Figure 2 It is a front view structural diagram of the air guiding cover of the front-mounted air guiding and ash storing device of the present invention;

[0027] Figure 3 It is a reverse view structural diagram of the air guiding cover of the front-mounted air guiding and ash storing device of the present invention;

[0028] Figure 4 It is a structural diagram of the filter cartridge of the front-mounted air guiding and ash storing device of the present invention;

[0029] Figure 5 It is a structural diagram of the filter cartridge of the front-mounted air guiding and ash storing device of the present invention;

[0030] Figure 6 It is a schematic diagram of the overall structure of the vacuum cleaner of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] The present invention will be described in detail below with reference to specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those of ordinary skill in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0032] Embodiment 1

[0033] The present invention provides a front-mounted air guiding and ash storage device, which is installed in a vacuum cleaner to improve the separation and adsorption effect of dust. It mainly includes an ash storage grid 1, a filter barrel 2 and a diversion cover 3. The filter barrel 2 includes an upper cover 21, a HEPA filter paper cylinder 22 and a lower cover 23. The HEPA filter paper cylinder 22 is a frustum-shaped cylinder structure. The upper cover 21 is sleeved on the conical bottom of the HEPA filter paper cylinder 22, and the lower cover 23 is sleeved on the conical top of the HEPA filter paper cylinder 22. The ash storage grid 1 is an open cabinet type and is used to store dust particles separated from the air flow. The ash storage grid 1 is arranged around the filter barrel 2, specifically around the HEPA filter paper cylinder 22. One side of the ash storage grid 1 that fits against the HEPA filter paper cylinder 22 can be in an open form or a closed form, preferably in an open form. The side facing the HEPA filter paper cylinder 22 is in an open form and serves as a channel for dust to enter. The ash storage grid 1 is located below the upper cover 21, where below the upper cover 21 means in the direction towards the lower cover 23. The ash storage grid 1 can be connected to the upper cover 21 by means such as bonding, clamping, screwing, etc. After the ash storage grid 1 is fixed around the upper end of the HEPA filter paper cylinder 22, its opening direction is towards the end away from the HEPA filter paper cylinder 22. The diversion cover 3 includes a flow splitting plate 31 and an outer cover 32. The flow splitting plate 31 is a frustum-shaped structural plate. There is a notch in the middle of the outer cover 32 that is adapted to the outer diameter of the flow splitting plate 31. The flow splitting plate 31 is installed at the notch in the middle of the outer cover 32, and the two are preferably connected as one by an integral molding method. The outer cover 32 is connected to the lower cover 23, so that the diversion cover 3 is installed at the lower end of the filter barrel 2. The connection method between the outer cover 32 and the lower cover 23 is preferably a detachable method such as clamping. More preferably, the connection between the outer cover 32 and the lower cover 23 is a rotatable connection, that is, after the outer cover 32 is connected to the lower cover 23, the outer cover 32 can rotate along the circumferential direction of the lower cover 23. The flow splitting plate 31 has a certain slope from the edge of the conical top to the edge of its conical bottom. The slope of the flow splitting plate 31 is preferably 10° - 80°, that is, the cone angle of the flow splitting plate 31 is set to 20° - 160°, which can ensure better diversion and introduction of the air flow.

[0034] The pre-positioned air guiding and dust storing device provided by the present invention, after being installed in the vacuum cleaner, the airflow carrying dust from the outside enters the shunt plate 31 through the inlet. The shunt plate 31 shunts the airflow carrying dust to the edge of the outer cover 32 through its own slope design. The airflow can enter the dust-gas separation chamber where the Hepa filter cartridge 22 and the dust storage grid 1 are located in a variable-speed and variable-direction manner through the corresponding structure provided on the outer cover 32 or the gap between the outer cover 32 and the outer housing, so that the airflow carrying dust is separated into dust and gas due to centrifugal force and / or collision, achieving the purpose of dust-gas separation. Compared with the prior art where only the Hepa filter cartridge is used for filtration, the air guiding and dust storing device provided by the present invention changes the flow rate and flow direction of the airflow carrying dust, realizes secondary separation including Hepa filter cartridge filtration, reduces the filtration amount of the Hepa filter cartridge and the accumulation amount of the displayed dust, basically solves the problem that the Hepa filter cartridge is easily blocked due to the active increase in the dust amount, and improves the dust-gas separation effect.

[0035] Embodiment 2

[0036] In this Embodiment 2, under the inventive concept of Embodiment 1, a dust-gas separation purpose is achieved in a centrifugal force manner. By setting an impeller-type and relatively rotatable flow guiding cover structure, the dust-gas separation effect reaches a better state. Specifically:

[0037] The outer cover 32 and the lower cover 23 are rotatably connected. The preferred implementation manner of the rotatable connection is that the outer cover 32 is provided with elastic hooks 320, and the number of the elastic hooks 320 is multiple, that is, including 2 or more. The elastic hooks 320 are arranged on the inner side surface of the outer cover 32, and the elastic hooks 320 are directly clamped to the upper and lower edges of the lower cover 32 and can rotate along the circumferential direction of the lower cover 23. At the same time, the outer cover 32 is provided with spiral blades 321, and the position of the spiral blades 321 is between the edge of the shunt plate 31 and the edge of the outer cover. A diversion port 322 is also opened at the end of the spiral blade 321. The diversion port 322 is mainly used to introduce the airflow shunted by the shunt plate 31 to the spiral blade 321 into the dust-gas separation chamber where the Hepa filter cartridge 22 and the upper cover 21 are located. The spiral blades 321 and the diversion ports 322 are in a one-to-one correspondence relationship, and the number of the spiral blades 321 and the diversion ports 322 is preferably multiple groups.

[0038] The working principle of the front-mounted air guiding and ash storage device provided in Embodiment 2 is as follows: The airflow with dust from the outside enters the diversion plate 31 with a slope design through the suction port. Then, the airflow with dust is diverted by the diversion plate 31 to the spiral blades 321 provided on the outer cover 32. The spiral blades 321 guide the airflow with dust to the diversion port 322 through the spiral surface. At the same time, the spiral blades 321 rotate due to the thrust of the airflow with dust, thereby driving the diversion hood 3 to rotate along the lower cover 23. As a result, the airflow with dust generates a centrifugal force due to the rotation of the diversion hood 3. After the airflow with dust enters the dust-gas separation chamber from the diversion port 322, the separation of dust and gas is achieved through the action of the rotating centrifugal force. The separated dust continues to rise under the action of the centrifugal force and thus enters the ash storage grid 1 located above, while the gas enters the cylinder body through the Hepa filter cartridge 22, ultimately achieving the purpose of dust-gas separation.

[0039] In Embodiment 2, by designing the diversion hood 3 to have a structure similar to that of a propeller, the rotation of the spiral blades drives the rotation of the diversion hood 3, thereby enabling the airflow with dust to generate a centrifugal force. Through the centrifugal force, the dust and gas can be well separated, greatly improving the dust-gas separation effect.

[0040] Preferably, the ash storage grid 1 is designed as multiple independent grids, that is, the storage grid 1 surrounding the upper part of the Hepa filter paper cylinder 22 is separated into a plurality of continuously spliced ones. The storage grid 1 is designed to have a converging frustum structure along the circumferential direction of the Hepa filter paper cylinder 22, and the connection mode of two adjacent storage grids 1 is that the cone top is connected to the cone bottom. This structural design of the storage grid 1 in one grid after another can cause the dust separated by the centrifugal force and rotating spirally to collide with the top plate of the cone of the storage grid 1 and be retained in the storage grid 1, thus better collecting the dust.

[0041] Further preferably, a notch 10 is provided at the cone bottom of each storage grid 1. The setting of the notch 10 provides a convenient passage for the separated dust to enter the storage grid 1, so that the separated dust no longer enters the storage grid 1 through the gap between the storage grid 1 and the outer shell. The notch 10 is provided at a corner of the cone bottom of the storage grid 1, and the notch 10 is located at one end far from the upper cover 21. After the notch 10 forms an L-shaped structure by the inward concavity of the bottom corner of the cone bottom of the storage grid 1 and then compresses a certain distance along the radial direction of the filter barrel 2, an L-shaped notch is formed. To prevent the dust entering the ash storage grid 1 from slipping out, the distance compressed along the radial direction of the filter barrel 2 is less than the height of the two side edges, that is, a dust-blocking rib plate with a certain height is formed at the notch 10, which is equivalent to a threshold and can effectively prevent the dust from slipping out or flowing out.

[0042] Embodiment 3

[0043] Embodiment 3 is a dust-gas separation method mainly achieved by speed change under the inventive concept of Embodiment 1. The air flow with dust enters the dust-gas separation chamber through the gap between the outer cover of the flow guide cover and the housing, which speeds up the flow rate of the air flow with dust, increases the collision force between the dust and the corresponding structural plate of the storage grid, and thus achieves the effect of dust-gas separation. Specifically:

[0044] The outer edge of the flow dividing plate 31 in the flow guide cover 3 extends to the edge of the outer cover 32, that is, the overall structure of the flow guide cover 3 is similar to a gyro structure. After the flow guide cover 3 is installed in the vacuum cleaner, there is only a small gap between the outer diameter of the outer cover 32 and the inner wall of the installed rear housing, that is, the outer diameter of the outer cover 32 is slightly smaller than the inner diameter of the installed rear housing, and the distance between the two is controlled to be 2-12 mm. The air flow with dust entering from the outside is divided by the flow dividing plate 31 with a frustum-shaped structure to the edge of the outer cover 32, and then enters the dust-gas separation chamber through the gap between the outer cover 32 and the housing. Due to the effect of the gap, the air flow with dust speeds up when the flow area decreases. After the air flow with dust that has accelerated collides with the structural plate of the dust storage grid 1, the effect of dust-gas separation is achieved.

[0045] The structure of the dust storage grid 1 is preferably an annular groove structure with a right trapezoid cross-section, and its lower bottom edge is adjacent to the lower end face of the upper cover 21. Here, the lower bottom edge of the dust storage grid 1 is the side with a longer length. After the dust storage grid 1 surrounds the HEPA filter cartridge 22, in the vertical direction, the outer edge of the lower bottom edge of the dust storage grid 1 extends beyond the outer edge of the upper bottom edge, so that the accelerated air flow with dust collides with the lower bottom edge, and the dust after acceleration collides with the lower bottom edge and then smoothly enters the dust storage grid 1.

[0046] Embodiment 4

[0047] Embodiment 4 is a vacuum cleaner formed on the basis of any one of Embodiments 1-3, adopting the front-mounted air guide and dust storage device in any one of Embodiments 1-3, and further including a main body, a power source and an air flow generator. A handle is provided at the upper end of the main body, and the inside of the handle is a cavity structure. A switch control device is provided on the handle. The power source is arranged at the tail end of the main body, and the power source is connected to the motor through a control switch. The air flow generator is installed in the main body. The air flow generator includes a motor and a flexible shock-absorbing sealing ring. The flexible shock-absorbing sealing ring structure ensures airtightness and absorbs the vibration generated by the motor.

[0048] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0049] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A front-mounted air guiding and ash storage device, characterized in that, It includes an ash storage grid (1), a filter cartridge (2) and a flow guide cover (3); The filter cartridge (2) is a frustum-shaped cylindrical structure, including an upper cover (21), a HEPA filter paper cylinder (22) and a lower cover (23) connected in sequence; The ash storage grid (1) is an open cabinet, the ash storage grid (1) is arranged around the HEPA filter paper cylinder (22), and the ash storage grid (1) fits the lower end face of the upper cover (21); The flow guide cover (3) includes a flow dividing plate (31) and an outer cover (32), the flow dividing plate (31) is frustum-shaped, the outer cover (32) is provided with a notch adapted to the outer diameter of the flow dividing plate (31) extending outward along the center point, and the flow dividing plate (31) is connected within the notch; The outer cover (32) is connected to the lower cover (23), and the apex of the frustum of the flow dividing plate (31) is away from the end face of the lower cover (23); The outer cover (32) is provided with elastic hooks (320), the number of the elastic hooks (320) is greater than or equal to 2, the elastic hooks (320) are clamped on the lower cover (23), and the elastic hooks (320) can rotate around the lower cover (23); The outer cover (32) is provided with spiral blades (321), the spiral blades (321) are located between the outer edge of the flow dividing plate (31) and the outer edge of the outer cover (32), and a flow guide port (322) is provided at the end of the spiral blades (321), and the flow guide port (322) is used for introducing air flow; The outer edge of the flow dividing plate (31) extends to the inner side of the outer edge of the outer cover (32), and the distance between the outer edge of the outer cover (32) and the inner surface of the housing sleeved outside the outer cover (32) is 2-12 mm.

2. The front-mounted air guiding and ash storage device according to claim 1, characterized in that, There are multiple groups of the spiral blades (321) and the flow guide ports (322) provided on the outer cover (32).

3. The front-mounted air guiding and ash storage device according to claim 1, characterized in that, The ash storage grid (1) is a frustum-shaped with a convergent cone along the circumference of the HEPA filter paper cylinder (22), and multiple frustum-shaped ash storage grids (1) are connected into a ring.

4. The front-mounted air guiding and ash storage device according to claim 3, characterized in that, The ash storage grid (1) is provided with a notch, and the notch is an L-shaped notch formed by the inner concave of the bottom corner of the ash storage grid (1) and compressed a certain distance along the radial direction of the filter cartridge (2), the distance of the notch compressed along the radial direction of the filter cartridge (2) is less than the side height of the ash storage grid (1), and the notch is located at one end away from the upper cover (21).

5. The front-mounted air guiding and ash storage device according to claim 1, characterized in that, The ash storage grid (1) is an annular groove structure with a right trapezoid cross-section, and the lower bottom edge of the ash storage grid (1) is adjacent to the lower end face of the upper cover (21).

6. The front-mounted air guiding and ash storage device according to claim 1, characterized in that, The cone angle of the flow dividing plate (31) is 20°-160°.

7. A vacuum cleaner, characterized in that, Adopt the front-mounted air guiding ash storage device according to any one of claims 1-6.

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