Dust collecting cup and vacuum cleaner

Abstract

The present invention relates to a dust cup body and a vacuum cleaner, belonging to the technical field of cleaning equipment, and is used to solve the problems that the working pressure of the filter layer in the dust cup body of the existing vacuum cleaner is high and the dust in the dust storage area will be directed to the filter layer again. The dust cup body of the present invention includes a dust cup and a filter assembly, a cover plate and a filter layer installed in the dust cup; the dust cup is provided with a fluid inlet and a fluid outlet for fluid in and out, and the cover plate is provided with a connecting port for fluid circulation; the filter assembly and the filter layer are respectively located on both sides of the cover plate; after the fluid enters the dust cup from the fluid inlet, it is filtered and dusted by the filter assembly, and then guided by the connecting port to the filter layer on the rear side of the cover plate for the next step of filtration, and then discharged from the dust cup from the fluid outlet. The present invention performs three-stage filtration on the dust-containing fluid through a spiral channel, a filter part and a filter layer, and filters dust of different particle sizes in the dust-containing fluid, so that the dust cup body can achieve graded filtration of the dust-containing fluid, and the filtering effect is significantly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning equipment, and in particular to a dust collecting cup and a vacuum cleaner. Background Art

[0002] In existing vacuum cleaners, dust-laden fluid flows directly to the filter layer of the dust cup through the suction pipe for filtration. The dust-laden fluid can only pass through the filter layer for dust removal, resulting in excessive working pressure of the filter layer. In addition, the dust storage area is located below the filter layer. When the negative pressure suction force is large, the dust particles in the dust storage area will still be directed to the filter layer again, increasing the working pressure of the filter layer. Summary of the invention

[0003] In view of the above analysis, the present invention aims to provide a dust cup body and a vacuum cleaner to solve the problem that the working pressure of the filter layer in the dust cup body of the existing vacuum cleaner is high and the dust in the dust storage area will be directed to the filter layer again.

[0004] On the one hand, the present invention provides a dust cup body, including a dust cup and a filter assembly, a cover plate and a filter layer installed in the dust cup; the dust cup is provided with a fluid inlet and a fluid outlet for fluid to enter and exit, and the cover plate is provided with a connecting port for fluid circulation; the filter assembly and the filter layer are respectively located on both sides of the cover plate; after the fluid enters the dust cup from the fluid inlet, it is filtered and dust-removed by the filter assembly, and then guided by the connecting port to the filter layer on the rear side of the cover plate for the next step of filtration, and then discharged from the dust cup from the fluid outlet.

[0005] Furthermore, the dust cup includes a side wall portion, a front end portion and a rear end cover, the front end portion is provided with the fluid inlet, and the rear end cover is provided with the fluid outlet.

[0006] Further, the filter assembly is limited between the front end portion and the cover plate;

[0007] The filter layer is installed in the assembly cavity formed by the cover plate and the rear end cover;

[0008] A dust storage area is formed between the side wall portion, the filter assembly, the cover plate and the front end portion, and the dust storage area is used to store dust filtered by the filter assembly.

[0009] Furthermore, the dust cup body also includes a front cover body, and the front cover body cover is arranged on the outer side of the front end portion;

[0010] The front cover body is provided with a flow guiding pipeline which is in communication with the fluid inlet, and the outlet of the flow guiding pipeline is an inclined port.

[0011] Furthermore, the aperture of the diversion pipeline gradually decreases from the inlet to the outlet.

[0012] Further, the filter assembly includes an outer cover body, an air guide plate and a filter cover, the filter cover is located in the outer cover body, and the air guide plate is located between the outer cover body and the filter cover;

[0013] A spiral channel is formed between the air guide plate, the outer cover body and the filter cover;

[0014] The fluid entering the filter assembly is first centrifugally filtered through the spiral channel, and after flowing out of the spiral channel, it is guided to the filter cover for the next step of filtration.

[0015] Furthermore, the outer cover is a hollow structure with an open rear end, and an air inlet is provided on the front end surface, and the fluid inlet is connected to the spiral channel through the air inlet.

[0016] Furthermore, the filter cover includes a sealing portion and a filtering portion, and the spiral channel is formed between the sealing portion, the outer cover body, and the air guide plate;

[0017] The filter part is a hollow structure with an open rear end, a filter mesh hole is arranged on the side wall of the filter part, and a rear port of the filter part is communicated with the communication port.

[0018] Furthermore, the air guide plate is a spiral plate, which starts from the front end surface of the outer cover body and spirally extends along the central axis of the filter cover to the dust outlet of the outer cover body, so that the cavity between the filter cover and the outer cover body is constructed into the spiral channel.

[0019] On the other hand, the present invention provides a vacuum cleaner including the above-mentioned dust cup body.

[0020] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0021] (1) The filter assembly is provided with a spiral channel, so that the dust-containing fluid can be centrifugally rotated during the conduction process, realizing centrifugal filtration and dust removal, thereby reducing the working pressure of the filter cover on the dust-containing fluid filtration;

[0022] (2) The filter assembly is provided with an outer cover body to effectively separate the filter cover from the dust storage area of ​​the dust collecting cup body, thereby preventing the dust in the dust storage area from being directed to the filter cover again, thereby reducing the working pressure of the filter assembly;

[0023] (3) The filter cover includes a sealing part and a filtering part. The sealing part, the outer cover body and the air guide plate form a spiral channel. The fluid discharged from the spiral channel is guided to the filtering part. After the dust-containing fluid is centrifugally rotated in the spiral channel, large dust particles are centrifugally filtered and thrown out of the filter component from the dust outlet. After the dust-containing fluid is further filtered through the filtering part, small dust particles are filtered and discharged from the filter component from the dust outlet, so that the filter component can achieve graded filtration, and the dust removal and filtration effect is significantly improved;

[0024] (4) A dust shield is provided at the bottom of the outer cover body to prevent a cyclone from being generated in the dust storage area of ​​the dust collecting cup body, and effectively prevent the dust in the dust storage area from being guided to the dust outlet by the cyclone;

[0025] (5) After the dust-laden fluid enters the dust collecting cup through the fluid inlet, it is filtered in three stages through the spiral channel, the filter part, and the filter layer. The three are relatively independent of each other and filter the dust of different particle sizes in the dust-laden fluid, so that the dust collecting cup can achieve graded filtration of the dust-laden fluid, and the filtering effect is significantly improved;

[0026] (6) The dust-containing fluid enters the interior of the outer cover through the guidance of the guide channel, which is conducive to the centrifugal rotation of the dust-containing fluid around the filter cover under the guidance of the air guide plate.

[0027] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can become obvious from the description, or can be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are only used for the purpose of illustrating specific embodiments and are not to be considered as limiting the present invention. In the entire drawings, the same reference symbols represent the same components;

[0029] Figure 1 It is a structural diagram of the dust cup body of Example 1;

[0030] Figure 2 It is a structural diagram of the dust cup body of Example 1;

[0031] Figure 3 It is a structural diagram of the dust cup body of Example 1;

[0032] Figure 4 is a structural diagram of the filter assembly of Example 1;

[0033] Figure 5 is a partial cross-sectional view of the filter assembly of Example 1;

[0034] Figure 6 is a cross-sectional view of the filter assembly of Example 1;

[0035] Figure 7 It is a partial cross-sectional view of the dust cup body of the first embodiment;

[0036] Figure 8 is a cross-sectional view of the front end cover of the first embodiment;

[0037] Fig. 9 is a structural diagram of a vacuum cleaner according to Embodiment 2;

[0038] Fig.10 It is a partial cross-sectional view of the vacuum cleaner of the second embodiment.

[0039] Reference numerals:

[0040] 1-filter assembly; 101-exit of spiral channel; 11-outer cover; 111-dust outlet; 12-air guide plate; 13-filter cover; 131-sealed part; 132-filter part; 133-strip groove; 134-cage; 14-casing; 15-dust shield; 2-cover plate; 21-connecting port; 3-filter layer; 4-side wall; 5-front end; 51-fluid inlet; 6-rear end cover; 61-fluid outlet; 7-dust storage area; 8-front cover; 81-flow guide pipe; 801-inclined port;

[0041] 9-suction pipe; 10-exhaust hole. DETAILED DESCRIPTION

[0042] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0043] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the term "connected" should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection, or an integral connection, which can be a mechanical connection, or an electrical connection, which can be a direct connection, or can be indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] The terms "top", "bottom", "above", "lower", and "on" used throughout the description are relative to the relative positions of components of a device, such as the relative positions of the top and bottom substrates within a device. It is understood that devices are multifunctional regardless of their orientation in space.

[0045] The common working surface of the present invention can be a plane or a curved surface, can be inclined, or can be horizontal. For the convenience of description, the embodiment of the present invention is placed on a horizontal plane and used on the horizontal plane, and "high and low" and "up and down" are defined in this way.

[0046] Embodiment 1

[0047] This embodiment provides a dust collecting cup body, such as Figure 1-Figure 8As shown, it includes a dust cup and a filter assembly 1, a cover plate 2 and a filter layer 3 installed in the dust cup. The dust cup is provided with a fluid inlet 51 and a fluid outlet 61 for fluid in and out, and the cover plate 2 is provided with a connecting port 21 for fluid circulation; the filter assembly 1 and the filter layer 3 are located on both sides of the cover plate 2, the front end of the filter assembly 1 is connected to the fluid inlet 51, and the rear end of the filter assembly 1 is connected to the connecting port 21. After the dust-containing fluid enters the dust cup from the fluid inlet 51, it is filtered and dust-removed by the filter assembly 1, and then guided to the filter layer 3 on the rear side of the cover plate 2 for the next step of filtration, and then discharged from the dust cup from the fluid outlet 61.

[0048] The dust cup includes a side wall portion 4, a front end portion 5 and a rear end cover 6. Specifically, the front end portion 5 is located in front of the side wall portion 4, and the rear end cover 6 is covered at the rear end of the side wall portion 4. The front end portion 5 is provided with a fluid inlet 51, and the rear end cover 6 is provided with a fluid outlet 61. The dust-containing fluid enters the dust cup body from the fluid inlet 51, and is discharged from the dust cup body from the fluid outlet 61 after filtering and dust removal. Therefore, a sealed connection is adopted between the front end portion 5 and the side wall portion 4, and between the rear end cover 6 and the side wall portion 4, so that the fluid can only enter and exit the dust cup body from the fluid inlet 51 and the fluid outlet 61.

[0049] In this embodiment, the side wall portion 4 and the front end portion 5 are integrally formed, and the rear end cover 6 is detachably mounted on the rear end of the side wall portion 4 to facilitate the removal, replacement, and maintenance of the cover plate 2, the filter layer 3, and the filter assembly 1, and to facilitate the cleaning of dust in the dust cup.

[0050] The filter assembly 1, the cover plate 2, and the filter layer 3 are sequentially installed in the dust cup, the filter assembly 1 is limited between the front end portion 5 and the cover plate 2, and the filter layer 3 is installed in the cover plate 2. Specifically, the front end face of the filter assembly 1 is sealed and connected to the front end portion 5, and the filter assembly 1 is connected to the fluid inlet 51, ensuring that the fluid entering the dust cup body from the fluid inlet 51 can flow into the filter assembly 1 for filtering and dust removal; the rear end face of the filter assembly 1 is sealed and connected to the cover plate 2, and the filter assembly 1 is connected to the connecting port 21, so that the fluid after filtering and dust removal by the filter assembly 1 is guided to the filter layer 3 for the next step of filtration; the cover plate 2 is sealed and connected to the rear end cover 6, and together they enclose an assembly cavity for assembling the filter layer 3, the shape of the filter layer 3 is adapted to the assembly cavity, so that all fluids flowing into the assembly cavity from the connecting port 21 are filtered by the filter layer 3 and then discharged from the fluid outlet 61.

[0051] The material of the filter layer 3 is filter cotton or filter Hepa.

[0052] The inner wall of the side wall portion 4, the outer wall of the filter assembly 1, the cover plate 2 and the front end portion 5 together enclose a dust storage area 7 of the dust collecting cup body.

[0053] The filter assembly 1 comprises an outer cover 11, an air guide plate 12 and a filter cover 13. The filter cover 13 is located inside the outer cover 11. The air guide plate 12 is located between the outer cover 11 and the filter cover 13 and forms a spiral channel together with the outer cover 11 and the filter cover 13. The fluid entering the filter assembly 1 is first centrifugally filtered through the spiral channel, and after flowing out of the spiral channel, it is guided to the filter cover 13 for the next step of filtering.

[0054] Specifically, the dust-containing fluid enters from the entrance of the spiral channel, and is centrifugally rotated through the spiral channel. Dust with larger particles is separated under the centrifugal action and discharged from the filter assembly through the outlet 101 of the spiral channel. After being discharged from the outlet 101 of the spiral channel, the fluid is guided to the filter cover 13 for the next step of filtration. It should be noted that the fluid guided from the outlet 101 of the spiral channel flows toward the rear end of the filter cover 13 to ensure that the fluid can be filtered in the next step.

[0055] The outer cover 11 is a hollow structure. Specifically, the outer cover 11 is a hollow structure with an open rear end, and an air inlet is provided on the front end surface. The air inlet is connected to the fluid inlet 51, and the air inlet is sealed and connected to the entrance of the spiral channel, so as to ensure that the fluid flowing through the filter assembly 1 can be centrifugally filtered through the spiral channel. The dust-containing fluid enters through the front end of the outer cover 11, and after centrifugation through the spiral channel, large particles of dust are discharged from the rear end of the outer cover, and the fluid is guided to the rear of the filter cover 13 for the next step of filtering.

[0056] The rear end face of the outer cover body 11 is recessed toward the front end face to form a dust outlet 111, that is, the rear end face of the outer cover body 11 is provided with a dust outlet 111, and the dust outlet 111 is connected with the outlet 101 of the spiral channel to ensure that large particles of dust filtered out by centrifugation are smoothly discharged from the outer cover body 11.

[0057] In this embodiment, the outer cover body 11 is a cylindrical structure with both the front and rear ends open. The entrance of the spiral channel is the air inlet, and the dust outlet 111 extends from the top of the outer cover body 11 along one side of the side wall of the outer cover body 11 to the bottom of the outer cover body 11, and the outlet 101 of the spiral channel is located at the bottom of the outer cover body 11. The outlet 101 of the spiral channel is connected to the dust outlet 111, and the rear end face of the air guide plate 12 is connected to the lower edge of the dust outlet 111, ensuring that there is no obstruction between the outlet 101 of the spiral channel and the dust outlet 111, so that the dust filtered by the centrifugal filter and the dust filtered by the filter cover 13 quickly fall into the dust storage area 7 from the dust outlet 111.

[0058] The edges and corners of the dust outlet 111 adopt arc-shaped transitions, which facilitate the passage of fluid, are not easy to accumulate dust, and can also prevent the user from being scratched by the dust outlet 111 when using the filter assembly 1.

[0059] The filter cover 13 is located inside the outer cover body 11. Specifically, the central axis of the filter cover 13 coincides with the central axis of the outer cover body 11. The filter cover 13 includes a sealing portion 131 and a filter portion 132. The filter portion 132 is located behind the sealing portion 131. The front end face and the side wall of the sealing portion 131 are closed wall surfaces. The sealing portion 131, the outer cover body 11 and the air guide plate 12 form a spiral channel. The filter portion 132 does not participate in the formation of the spiral channel, ensuring that the spiral channel only centrifugally filters the dust-containing fluid, so that the filter assembly can achieve graded filtration and has a better dust removal and filtration effect. The filter portion 132 is located behind the spiral channel. After the dust-containing fluid is centrifugally filtered through the spiral channel, it is guided to the filter portion 132 for the next step of filtration. The dust filtered out by the filter portion 132 falls into the dust storage area 7 from the dust outlet 111.

[0060] The filter portion 132 is a hollow structure with an open rear end, and filter mesh holes are provided on the side walls of the filter portion 132. The rear end surface of the filter portion 132 is in sealing contact with the cover plate 2, and the rear port of the filter portion 132 is connected to the connecting port 21. After the dust-containing fluid is further filtered through the filter mesh holes, it is guided from the rear port of the filter portion 132 to the filter layer 3 behind the cover plate 2 for the next step of filtration.

[0061] Since the fluid discharged from the spiral channel is not blown directly to the filter part 132 under the action of centrifugal guidance, in order to better introduce the fluid into the filter part 132, the filter mesh is set to have a certain inclination, and the inclination direction of the filter mesh is consistent with the spiral direction of the spiral channel, that is, the filter mesh is not perpendicular to the central axis of the filter part 132, and the inclination direction of the filter mesh is consistent with the flow direction of the fluid guided from the outlet 101 of the spiral channel to the filter part 132, so that the fluid can be introduced into the filter part 132 faster.

[0062] In this embodiment, the filter cover 13 is a tubular structure with a closed front end and an open rear end, and the filter cover 13 is coaxially arranged with the outer cover body 11, the front end face of the filter cover 13 is a closed structure, and its front end face is flush with the front end face of the outer cover body 11, and the rear end face of the filter cover 13 is an open opening, and its rear end face is flush with the rear end face of the outer cover body 11, and the fluid filtered by the filter cover 13 is discharged from its rear port. The sealing part 131 and the filter part 132 of the filter cover 13 are integrally formed, the sealing part 131 is a tube body with a closed front end face and side wall, the filter part 132 is a tube body with side walls covered with filter mesh holes and an open rear end, and the filter part 132 corresponds to the dust outlet 111, so that dust is discharged from the dust outlet 111, and the rear end of the filter part 132 is connected with the connecting port 21, that is, the rear end of the filter part 132 and the connecting port 21 have the same shape and size, so as to ensure that the fluid discharged from the rear end of the filter part 132 is quickly guided to the cover plate 2.

[0063] In this embodiment, the width of the dust outlet 111 is not less than the length from the outlet 101 of the spiral channel to the rear end surface of the filter part 132, so as to ensure that the dust centrifuged by the spiral channel and the dust filtered by the filter part 132 can be quickly discharged from the dust outlet 111 to the filter assembly 1.

[0064] It should be noted that the sealing portion 131 adopts a solid structure to prevent the fluid from forming a vortex in the filter cover 13 and quickly being discharged from the rear end of the filter cover 13 .

[0065] The air guide plate 12 is located between the filter cover 13 and the outer cover body 11, and forms a spiral channel together with the filter cover 13 and the outer cover body 11. Specifically, the air guide plate 12 is a spiral plate, which spirally extends from the front end surface of the outer cover body 11 along the central axis of the filter cover 13 to the dust outlet 111, thereby configuring the cavity between the filter cover 13 and the outer cover body 11 into a spiral channel, that is, the inner spiral side edge of the spiral plate is sealed with the outer side wall of the filter cover 13, the outer spiral side edge of the spiral plate is sealed with the inner side wall of the outer cover body 11, and the front end surface of the spiral plate is flush with the front end surfaces of the outer cover body 11 and the filter cover 13.

[0066] After the dust-containing fluid enters the filter assembly 1 from the front end face of the outer cover body 11, it is guided by the spiral plate, centrifugally rotates around the filter cover 13, and is guided to the dust outlet 111 by the front end face of the outer cover body 11. In this process, when the larger particles in the dust-containing fluid approach the dust outlet 111, they are directly thrown out of the filter assembly 1 and fall into the dust storage area 7 under the action of centrifugation; the smaller particles in the dust-containing fluid are guided to the filter part 132 of the filter cover 13 along with the fluid, and fall into the dust storage area 7 from the dust outlet 111 after being filtered by the filter mesh; and the fluid after two filtration and dust removal is discharged from the filter assembly 1 from the rear port of the filter part 132, and then guided to the filter layer 3 on the rear side of the cover plate 2 through the connecting port 21.

[0067] It should be noted that the central angle of the spiral plate is α, α≥360°, that is, the number of spiral turns of the spiral plate around the central axis of the filter cover 13 is at least one circle, so that the spiral plate has a good spiral guiding effect on the dust-containing fluid and improves the effect of centrifugal dust removal in the spiral channel. However, the central angle of the spiral plate should not be too large, so as not to cause the dust-containing fluid to pass through the spiral channel for too long, thereby reducing the filtration rate of the filter assembly 1, and large particles of dust may be retained in the channel due to the excessive length of the spiral channel, which is not conducive to dust discharge, and even worse, the channel is blocked, affecting the flow of the fluid. Therefore, α<720°. In short, 360°≤α<720°.

[0068] In this embodiment, α=400°, the rear end face of the spiral plate faces the dust outlet 111 and is connected to the bottom edge of the dust outlet 111, so that large particles of dust can fall directly from the dust outlet 111 into the dust storage area 7 under the action of gravity after being discharged from the spiral channel.

[0069] In order to improve the stability of the filter cover 13 and to facilitate the replacement and maintenance of the filter cover 13, a sleeve 14 is sleeved on the outside of the filter cover 13. Specifically, the sleeve 14 is sleeved on the outside of the closed portion 131. At this time, the air guide plate 12 is located between the sleeve 14 and the outer cover body 11, and forms a spiral channel together with the sleeve 14 and the outer cover body 11. The filter cover 13 can be taken out of the sleeve 14, and the filter cover 13 is connected to the sleeve 14 in a detachable manner.

[0070] In this embodiment, the sleeve 14 is a cylindrical structure with a closed front end and an open rear end. The front end surface of the sleeve 14 is flush with the front end surface of the outer cover body 11. The filter cover 13 is detachably sleeved in the sleeve 14, and the outer diameter of the filter cover 13 is equal to the inner diameter of the sleeve 14, so that the filter cover 13 is stable and does not shake in the sleeve 14. Since the inner wall of the sleeve 14 and the outer wall of the filter cover 13 are tightly fitted together, in order to facilitate the removal of the filter cover 13, a strip groove 133 is provided on the outer wall of the filter cover 13. The strip groove 133 extends from the front end of the outer wall of the filter cover 13 to the rear end. The strip groove 133 is a linear groove, and the straight line is parallel to the central axis of the filter cover 13. In this embodiment, three strip grooves 133 are provided on the outer wall of the filter cover 13, and are evenly distributed on the outer wall of the filter cover 13.

[0071] In order to prevent the filter cover 13 from detaching from or loosening from the sleeve 14 during the use of the filter assembly 1, a clamping plate 134 is provided in the strip groove 133. The clamping plate 134 can slide in the strip groove 133. The clamping plate 134 can be clamped between the filter cover 13 and the sleeve 14 to fix the filter cover 13 in the sleeve 14, so that the filter cover 13 is not easily detached from or loosened from the sleeve 14. When the filter cover 13 is removed from the sleeve 14, an external force is applied to the clamping plate 134 to slide it out from between the filter cover 13 and the sleeve 14, so that the filter cover 13 can be taken out of the sleeve 14.

[0072] In this embodiment, the sleeve 14, the air guide plate 12 and the outer cover 11 are integrally formed, so that the filter assembly 1 has good stability.

[0073] It should be noted that when the filter assembly 1 includes the sleeve 14, the filter cover 13 can remove the sealing part 131 and only provide the filter part 132. In this case, the front end surface of the sleeve 14 is a closed structure, and the filter part 132 is detachably connected to the rear end of the sleeve 14. For example, the filter part 132 is detachably connected to the rear end of the sleeve 14 by threaded connection, clamping, etc., so as to replace and maintain the filter part 132. In this case, the sleeve 14 can also adopt a solid structure.

[0074] In order to further prevent the dust in the dust storage area 7 from being directed to the dust outlet 111 again, the filter assembly 1 further includes a dust shield 15, which is located at the bottom of the outer cover 11 and is arranged along the central axis of the outer cover 11, so as to prevent the generation of a cyclone in the dust storage area 7 and effectively prevent the dust in the dust storage area 7 from being directed to the dust outlet 111 along with the cyclone. In this embodiment, the dust shield 15 provides the following two structures:

[0075] (1) The dust shield 15 is a vertical plate. Specifically, the vertical plate is located at the bottom front end of the outer cover 11, and the vertical plate is perpendicular to the bottom end surface of the outer cover 11, that is, the central axis of the outer cover 11 is located in the plane where the vertical plate is located. Figure 1-Figure 6 As shown, the distance from the dust outlet 111 to the front end face of the outer cover body 11 (i.e., the distance from the frontmost edge of the dust outlet 111 to the front end face of the outer cover body 11) is S, the length of the vertical plate is L, S / 3≤L≤S, and by setting the vertical plate, which is located in the dust storage area 7, it can effectively prevent the formation of a cyclone in the dust storage area 7, and can block the dust in the dust storage area 7 from being guided to the dust outlet 111, so that the dust can be retained in the dust storage area.

[0076] (2) The dust shield 15 is an inclined plate. Specifically, the inclined plate is located at the bottom end surface of the outer cover 11. The angle between the plane where the inclined plate is located and the plane where the bottom end surface of the outer cover 11 is an acute angle, and the inclined plate is inclined in the direction where the dust outlet 111 is located. In this embodiment, the length of the inclined plate is equal to the length of the outer cover 11 (i.e., the distance from the front end surface to the rear end surface of the outer cover 11), and the inclined plate is connected to the bottom edge of the dust outlet 111. In this way, the inclined plate can not only effectively prevent the dust in the dust storage area 7 from being guided to the dust outlet 111, so that the dust can be retained in the dust storage area, but also can quickly guide the dust discharged from the dust outlet 111 to the dust storage area.

[0077] In order to ensure the filtering effect of the filter cover 13 on the fluid, the rear end face of the outer cover body 11 (excluding the rear end face forming the dust outlet 111) is sealed and connected to the cover plate 2 to prevent the fluid discharged from the spiral channel and guided to the filter part 132 from flowing away from the gap between the rear end face of the outer cover body 11 and the cover plate 2, thereby affecting the filtering effect of the filter part 132 on the fluid, thereby preventing a cyclone from forming in the dust storage area 7.

[0078] In this embodiment, the top of the outer wall of the outer cover 11 contacts the top of the outer wall of the side wall 4, so that the dust storage area 7 is located below the outer cover 11, which is convenient for storing dust. Correspondingly, the position of the connecting port 21 is also located above the center of the cover plate 2, which is compatible with the position of the rear port of the filter cover 13.

[0079] In order to improve the connection performance between the filter assembly 1 and the dust cup, the outer cover body 11 is detachably connected to the dust cup. Specifically, the outer cover body 11 is detachably connected to the side wall portion 4 by a slide block, a slot block, etc. to improve the stability of the dust cup body.

[0080] After the dust-containing fluid enters the dust collecting cup from the fluid inlet 51, it is first centrifugally filtered through the spiral channel, and large particles of dust are thrown out of the filter assembly and fall into the dust storage area. After being discharged from the spiral channel, the fluid is guided to the filter part 132. After the fluid is further filtered by the filter part 132, small particles of dust fall into the dust storage area 7. The fluid is guided from the rear port of the filter part 132 to the filter layer 3 in the cover plate 2. After the filter layer 3 filters the fluid, the fluid is discharged from the fluid outlet 61. In this way, the dust collecting cup can achieve three-stage filtration of the inflowing dust-containing fluid, and has an excellent dust removal effect.

[0081] In order to more conveniently clean the dust in the dust storage area 7, a cleaning port for dumping dust is provided on the side wall 4, and a cover plate that is adapted thereto and can be opened and closed is provided on the cleaning port, and the cover plate is located on the outside of the side wall 4, and the cover plate and the cleaning port are sealed to ensure the sealing of the dust cup body. The cover plate can be covered on the cleaning port by a snap fastener, a sliding member, etc. When it is necessary to clean the dust in the dust storage area 7, the cover plate is opened or slid open, the dust is dumped out through the cleaning port, and then the cover plate is covered or slid back to the cleaning port.

[0082] In order to better introduce the dust-containing fluid into the dust collecting cup, the dust collecting cup also includes a front cover 8. The removable cover of the front cover 8 is arranged on the side of the front end portion 5 away from the side wall portion 4. The front cover 8 is provided with a guide pipe 81 connected to the fluid inlet 51. The outlet of the guide pipe 81 is an inclined port 801, and the opening of the inclined port 801 faces the fluid inlet 51. The direction of the fluid introduced into the filter component 1 through the inclined port 801 is consistent with the spiral direction of the spiral channel of the filter component 1, so that the fluid can be quickly centrifugally removed in the spiral channel, avoiding unnecessary airflow collisions and vortices, making the fluid flow more smoothly in the dust collecting cup and achieving better dust removal and filtering effects.

[0083] In order to increase the flow rate of the dust-containing fluid when it enters the filter assembly 1, the inlet aperture of the guide pipe 81 is larger than the outlet aperture, that is, the guide pipe 81 is a tapered pipe, so as to effectively increase the flow rate of the dust-containing fluid entering the filter assembly 1, thereby increasing the centrifugal force of the fluid in the spiral channel, so that the filter assembly has a better centrifugal dust removal effect.

[0084] The front end portion 5 is perpendicular to the central axis of the dust cup, and the angle between the inclined surface where the inclined port 801 is located and the plane where the front end surface is located is β, 15°≤β≤45°, and in this embodiment, β=30°.

[0085] The dust collecting cup provided in this embodiment has at least one of the following beneficial effects:

[0086] (1) The filter assembly is provided with a spiral channel so that the dust-containing fluid can be centrifugally rotated during the conduction process to achieve centrifugal filtration and dust removal, thereby reducing the working pressure of the filter cover on the dust-containing fluid filtration;

[0087] (2) The filter assembly effectively separates the filter cover from the dust storage area of ​​the dust cup by providing an outer cover body, so as to prevent the dust in the dust storage area from being directed to the filter cover again, thereby reducing the working pressure of the filter assembly;

[0088] (3) The filter cover includes a sealing part and a filtering part. The sealing part, the outer cover body and the air guide plate form a spiral channel. The fluid discharged from the spiral channel is guided to the filtering part. After the dust-containing fluid is centrifugally rotated in the spiral channel, large dust particles are centrifugally filtered and thrown out of the filter assembly from the dust outlet. After the dust-containing fluid is further filtered through the filtering part, small dust particles are filtered and discharged from the filter assembly from the dust outlet, so that the filter assembly can achieve graded filtration and has a better dust removal and filtration effect.

[0089] (4) A dust shield is provided at the bottom of the outer cover body to prevent a cyclone from being generated in the dust storage area of ​​the dust collecting cup body, and effectively prevent the dust in the dust storage area from being guided to the dust outlet by the cyclone;

[0090] (5) After the dust-containing fluid enters the dust collecting cup through the fluid inlet, it undergoes three-stage filtration through the spiral channel, the filter part, and the filter layer. The three are relatively independent of each other and filter the dust of different particle sizes in the dust-containing fluid, so that the dust collecting cup can achieve graded filtration of the dust-containing fluid, with excellent filtration effect;

[0091] (6) The dust-containing fluid enters the interior of the outer cover through the guidance of the guide channel, which is conducive to the centrifugal rotation of the dust-containing fluid around the filter cover under the guidance of the air guide plate.

[0092] Embodiment 2

[0093] This embodiment provides a vacuum cleaner, such as Figure 9-10 As shown, it includes the dust collecting cup body provided in Example 1.

[0094] Compared with the prior art, the beneficial effects of the vacuum cleaner provided in this embodiment are basically the same as the beneficial effects of the dust cup provided in Embodiment 1, and will not be described one by one here.

[0095] Specifically, the vacuum cleaner of this embodiment is a handheld vacuum cleaner, which also includes a main shell. A device cavity for assembling a dust cup body is opened in the middle of the main shell. A suction pipe 9 is provided at the front end of the main shell. The suction pipe 9 is connected to the fluid inlet 51 of the dust cup body. Specifically, the suction pipe 9 is connected to the guide pipe 81 of the front cover body 8. The dust-containing fluid entering the vacuum cleaner is guided to the dust cup body through the suction pipe 9. After filtering and dust removal by the dust cup body, the fluid is discharged from the vacuum cleaner from the exhaust hole 10 at the rear end of the main shell.

[0096] The dust cup body can be detachably installed in the device cavity of the main shell, so as to facilitate the maintenance and replacement of the dust cup body and also facilitate the dumping of the dust stored in the dust cup body.

[0097] In this embodiment, the central axis of the suction pipe 9 is AA, the central axis of the filter assembly 1 is BB, and the central axis AA is located above the axis BB.

[0098] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A dust collecting cup, characterized in that: It comprises a dust collecting cup, a filter assembly (1), a cover plate (2) and a filter layer (3) installed in the dust collecting cup; The dust collecting cup is provided with a fluid inlet (51) and a fluid outlet (61) for fluid to enter and exit, and the cover plate (2) is provided with a connecting port (21) for fluid to flow; The filter assembly (1) and the filter layer (3) are respectively located on two sides of the cover plate (2); After the fluid enters the dust collecting cup from the fluid inlet (51), it is filtered and dusted by the filter assembly (1), and then guided by the connecting port (21) to the filter layer (3) on the rear side of the cover plate (2) for further filtration, and then discharged from the dust collecting cup from the fluid outlet (61); The dust cup comprises a side wall portion (4), a front end portion (5) and a rear end cover (6); the front end portion (5) is provided with the fluid inlet (51), and the rear end cover (6) is provided with the fluid outlet (61); The filter assembly (1) is limited between the front end portion (5) and the cover plate (2); The filter layer (3) is installed in an assembly cavity formed by the cover plate (2) and the rear end cover (6); A dust storage area (7) is formed between the side wall portion (4), the filter assembly (1), the cover plate (2) and the front end portion (5), and the dust storage area (7) is used to store dust filtered by the filter assembly (1); It also includes a front cover (8), which is arranged to cover the outer side of the front end portion (5); The front cover (8) is provided with a flow guiding pipeline (81) which is in communication with the fluid inlet (51), and the outlet of the flow guiding pipeline (81) is an inclined port (801).

2. The dust cup body according to claim 1, characterized in that: The aperture of the flow guiding pipeline (81) gradually decreases from the inlet to the outlet.

3. The dust cup body according to claim 1 or 2, characterized in that: The filter assembly (1) comprises an outer cover body (11), an air guide plate (12) and a filter cover (13); the filter cover (13) is located inside the outer cover body (11), and the air guide plate (12) is located between the outer cover body (11) and the filter cover (13); A spiral channel is formed between the air guide plate (12), the outer cover body (11) and the filter cover (13); The fluid entering the filter assembly (1) is first centrifugally filtered through the spiral channel, and after flowing out of the spiral channel, is guided to the filter cover (13) for the next step of filtering.

4. The dust cup body according to claim 3, characterized in that: The outer cover (11) is a hollow structure with an open rear end, and an air inlet is provided on the front end surface, through which the fluid inlet (51) is connected to the spiral channel.

5. The dust cup body according to claim 3, characterized in that: The filter cover (13) comprises a sealing portion (131) and a filtering portion (132), and the spiral channel is formed between the sealing portion (131), the outer cover body (11), and the air guide plate (12); The filter portion (132) is a hollow structure with an open rear end. A filter mesh is provided on the side wall of the filter portion (132). The rear port of the filter portion (132) is in communication with the communication port (21).

6. The dust cup body according to claim 3, characterized in that: The air guide plate (12) is a spiral plate, which starts from the front end surface of the outer cover body (11) and spirally extends along the central axis of the filter cover (13) to the dust outlet (111) of the outer cover body (11), thereby configuring the cavity between the filter cover (13) and the outer cover body (11) into the spiral channel.

7. A vacuum cleaner, characterized in that: It comprises a dust cup body as described in any one of claims 1 to 6.

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