Barrel type dust collector

Abstract

The utility model provides a barrel type dust collector which comprises a main body, a dust collector body and a dust collector body. The dust collection barrel is detachably arranged in the mounting cavity, the dust collection barrel comprises an inner barrel and an outer barrel, the inner barrel is arranged in the outer barrel and is separated from at least one part of the outer barrel to form a sound insulation cavity, and the inner barrel is connected with the outer barrel to seal the sound insulation cavity. The double-layer dust collection barrel structure comprising the inner barrel and the outer barrel is designed, and the sound insulation cavity is formed between the inner barrel and the outer barrel, so that noise is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to dust catcher technical field, concretely relates to a barrel type dust catcher. BACKGROUND

[0002] Dust catcher is widely used in life and industry. Dust catcher usually includes airflow generating device and filter. When dust catcher works, dust-containing airflow enters dust catcher and flows through filter under the power drive of airflow generating device. Dust in dust-containing airflow is intercepted by filter and collected in dust collection bag. Clean airflow formed after dust removal is discharged from air outlet of dust catcher along air duct. Barrel type dust catcher is a common and powerful household cleaning equipment. Its main feature is to use a barrel type container to collect dust and sundries. It usually includes a motor, a dust collecting head and a series of accessories for different cleaning tasks. However, current barrel type dust catchers on the market have problems such as loud noise, short air duct, low filtration efficiency and short endurance. SUMMARY

[0003] In view of the above shortcomings of the prior art, the utility model aims at providing a barrel type dust catcher to improve the problems of current barrel type dust catchers such as loud noise, short air duct, low filtration efficiency and short endurance.

[0004] To achieve the above object and other related objects, the utility model provides a barrel type dust catcher, which comprises:

[0005] A main body is provided with an installation cavity with an opening;

[0006] A dust collecting barrel is detachably arranged in the installation cavity. The dust collecting barrel comprises an inner barrel and an outer barrel. The inner barrel is arranged in the outer barrel and spaced apart from at least a part of the outer barrel to form a sound insulation cavity. The inner barrel is connected with the outer barrel to close the sound insulation cavity.

[0007] In a preferred embodiment of the utility model, the sound insulation cavity is in the shape of a barrel.

[0008] In a preferred embodiment of the utility model, the inner barrel comprises a first barrel part and a first connecting part arranged at the barrel opening of the first barrel part. The outer barrel comprises a second barrel part and a second connecting part arranged at the barrel opening of the second barrel part. The first barrel part and the second barrel part are spaced apart to form a sound insulation cavity. The first connecting part is connected with the second connecting part to close the sound insulation cavity.

[0009] In a preferred embodiment of the utility model, the height of the dust collecting barrel is H, and the height of the sound insulation cavity is h. h is greater than or equal to 3 / 4H.

[0010] In an optimal embodiment of the present application, the inner wall surface of the mounting cavity comprises a connecting surface, a through hole communicating with the dust collecting barrel is arranged on the connecting surface, and a plurality of sealing rings are arranged between the dust collecting barrel and the connecting surface, and the innermost sealing ring is arranged around the through hole.

[0011] In an optimal embodiment of the present application, the plurality of sealing rings comprise a first sealing ring and a second sealing ring, a dust-gas separation device is arranged in the dust collecting barrel, the first sealing ring is arranged between the dust-gas separation device and the connecting surface, and the second sealing ring is arranged between the cover plate of the dust collecting barrel and the connecting surface.

[0012] In an optimal embodiment of the present application, the connecting surface is arranged obliquely, one end of the connecting surface close to the opening is higher than the other end of the connecting surface far from the opening, the height of one end of the first sealing ring close to the opening is higher than the height of the other end of the first sealing ring far from the opening, gradually decreases from one end close to the opening to the other end far from the opening, and the second sealing ring is arranged obliquely between the connecting surface and the cover plate.

[0013] In an optimal embodiment of the present application, the plurality of sealing rings are all arranged inside the barrel opening of the inner barrel.

[0014] In an optimal embodiment of the present application, the air duct assembly is fixedly connected with the main body and located above the connecting surface, and at least three layers of annular air ducts are arranged around the air duct assembly.

[0015] In an optimal embodiment of the present application, the air duct assembly further comprises a radial air duct, the radial air duct is connected at the outlet of the annular air duct arranged around, and a circuit board is arranged in the radial air duct.

[0016] In an optimal embodiment of the present application, the extension direction of the circuit board is arranged parallel to or obliquely to the extension direction of the radial air duct.

[0017] In an optimal embodiment of the present application, the outlet of the radial air duct is opposite to the opening of the mounting cavity.

[0018] In an optimal embodiment of the present application, the circuit board comprises an alternating current power supply mode and a direct current power supply mode.

[0019] In an optimal embodiment of the present application, the dust-gas separation device comprises:

[0020] A partition plate is attached to and sealed with the inner wall of the inner barrel, and a ventilation hole is arranged on the partition plate.

[0021] a cone body installed at the bottom of the partition plate, a larger diameter end of the cone body being communicated with the air hole;

[0022] a lower shell installed at the bottom of the cone body and abutting against the bottom surface of the inner barrel;

[0023] a filter screen arranged around the outside of the cone body and connected with the partition plate and the lower shell;

[0024] a filter element arranged above the partition plate and covering the through hole.

[0025] In a preferred embodiment of the present application, the cone body comprises:

[0026] a plurality of cone bodies located at the bottom surface of the partition plate and corresponding to the air holes;

[0027] a gas inlet is formed at the top of the cone body, the gas inlet being communicated with the inner chamber of the cone body and tangent to the inner wall of the cone body.

[0028] In a preferred embodiment of the present application, a convex structure is arranged around each air hole of the partition plate, the convex structure extending to the inner space of the cone body.

[0029] In a preferred embodiment of the present application, at least two battery pack installation cavities are arranged on the main body, the battery pack installation cavities being located at one side of the installation cavity, and a battery pack is detachably installed in the battery pack installation cavity.

[0030] In a preferred embodiment of the present application, an air inlet is further formed on the main body, the orientation of the air inlet being opposite to the orientation of the opening of the installation cavity, and the air inlet being communicated with the inner space of the inner barrel.

[0031] The present application provides a barrel type dust collector, which comprises a double-layer dust collecting barrel structure comprising an inner barrel and an outer barrel, a sound insulation cavity being formed between the inner barrel and the outer barrel to reduce noise, at least three annular air duct structures being arranged around the outer side of the vacuum motor, and an air outlet being tangent to the outermost annular air duct at one end close to the air duct assembly, so as to improve the efficiency of the dust collector and further reduce the noise of the dust collector, at least two sealing rings being arranged between the air duct assembly and the dust barrel, so as to further reduce the noise of the dust collector through the double-layer sealing structure; and a multi-cone dust gas separation device is used to realize dust gas filtration, so as to improve the filtration efficiency of the dust collector and ensure the filtration effect.

[0032] The utility model provides a bucket type dust collector, which is compatible with alternating current power mode and direct current power mode through the design of the circuit board, so that the bucket type dust collector can use alternating current or direct current to adapt to different use scenarios; two detachable battery packs are designed on the main body to further increase the endurance of the dust collector. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0034] Figure 1 It is a front view schematic diagram of the bucket type dust collector in an embodiment of the utility model.

[0035] Figure 2 It is a shaft side schematic diagram of the bucket type dust collector in an embodiment of the utility model.

[0036] Figure 3 It is a schematic diagram of the installation cavity of the bucket type dust collector in an embodiment of the utility model.

[0037] Figure 4 It is another shaft side schematic diagram of the bucket type dust collector in an embodiment of the utility model.

[0038] Figure 5 It is a sectional view schematic diagram of the bucket type dust collector in an embodiment of the utility model.

[0039] Figure 6 It is a schematic diagram of the dust collecting barrel in the bucket type dust collector in an embodiment of the utility model.

[0040] Figure 7 It is Figure 5 It is an enlarged schematic diagram of A in the figure.

[0041] Figure 8 It is a schematic diagram of the air duct of the bucket type dust collector in an embodiment of the utility model.

[0042] Figure 9 It is a structural schematic diagram of the dust gas separation device in the bucket type dust collector in an embodiment of the utility model.

[0043] Figure 10 It is a schematic diagram of the first partition plate of the bucket type dust collector in an embodiment of the utility model.

[0044] Figure 11 It is a schematic diagram of the cone in the bucket type dust collector in an embodiment of the utility model.

[0045] BRIEF DESCRIPTION OF DRAWINGS

[0046] 100, barrel type dust collector; 10, main body; 20, dust collecting barrel; 30, dust-gas separation device; 40, air inlet; 50, air duct assembly; 60, vacuum motor; 101, mounting cavity; 201, sound insulation cavity; 202, first through hole; 203, protrusion; 21, inner barrel; 22, outer barrel; 23, cover plate; 211, first barrel part; 212, first connecting part; 221, second barrel part; 222, second connecting part; 1011, connecting surface; 1012, second through hole; 102, first sealing ring; 103, second sealing ring; 31, first partition plate; 311, first part; 312, second part; 32, cone; 33, lower shell; 34, filter screen; 35, filter element; 36, top bracket; 331, second partition plate; 332, housing; 321, cone body; 322, air inlet; 301, vent hole; 302, protrusion structure; 501, air duct; 502, radial air duct; 70, circuit board; 80, battery pack mounting cavity; 200, battery pack. DETAILED DESCRIPTION

[0047] The above embodiments of the present application are only used to illustrate the principle of the present application, and the skilled in the art can easily understand other advantages and effects of the present application from the above disclosure. The present application can also be implemented or applied through other different embodiments, and the details in the specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present application.

[0048] It should be noted that the drawings provided in the embodiments only schematically illustrate the basic concept of the present application, and only the components related to the present application are shown in the drawings, not the number, shape and size of the components in actual implementation. The shape, number and proportion of each component in actual implementation can be randomly changed, and the layout pattern of the components can be more complex.

[0049] It can be understood that the bearing in the existing motor is basically glued in the bearing chamber. In this way, the bearing is completely fixed. If the bearing position has poor concentricity, the bearing running noise will easily become larger, and the heat generated during operation will also easily cause the glue to fail, thereby causing the bearing to lose fixation due to glue failure, and further causing the motor to fail. In addition, this fixing method makes the vibration of the motor during operation transmitted to the outside of the motor through the bearing chamber, causing the problem of high motor noise.

[0050] Please refer to Figures 1 to 11As shown, the bucket type dust collector 100 is a common and powerful household cleaning device, its main feature is to use a bucket type container to collect dust and debris, and the current existing dust collector motor cover air outlet duct is short, generally uses single layer dust cup, single layer sealing ring, which cannot effectively reduce the noise of the machine, affects the customer experience, and the power access mode is generally only AC power access or self-contained DC power supply, which cannot adapt to different scenes, and the commonly used dust collector basically has an internal battery pack or only one detachable battery pack, which has poor endurance, and the commonly used bucket type dust collector is basically a dust bag type or single cone filtering method, which has poor filtering effect and low efficiency, that is, the existing dust collector has the problems of high noise, flexible power access, low filtering efficiency, short battery pack endurance, etc., which greatly affects the user experience and poor customer experience. Therefore, the utility model provides a kind of bucket type dust collector 100 to improve the above problems. Specifically, the bucket type dust collector 100 includes a main body 10, a dust collecting bucket 20, a dust-gas separation device 30, a duct assembly 50 and a vacuum motor 60, the dust collecting bucket 20 is detachably installed in the main body 10, specifically, an installation cavity 101 with an opening is provided in the main body 10, the dust collecting bucket 20 is detachably arranged in the installation cavity 101, the dust-gas separation device 30 is detachably installed in the dust collecting bucket 20, an air inlet 40 is provided on one side of the main body 10, the direction of the air inlet 40 is opposite to the direction of the opening of the installation cavity 101, the air inlet 40 is in communication with the internal space of the inner bucket 21 of the dust collecting bucket 20, the duct assembly 50 is fixedly connected with the main body 10 and located above the dust-gas separation device 30, the vacuum motor 60 is fixedly installed in the inside of the duct assembly 50, the air ducts in the duct assembly 50 are respectively in communication with the internal space of the dust-gas separation device 30, in use, the vacuum motor 60 is started, the air carrying dust or other debris enters the dust-gas separation device 30 from the air inlet 40, and the dust or other debris is filtered through the filtering action of the dust-gas separation device 30, and the clean air enters the duct assembly 50 and is discharged from the outlet to the outside of the bucket type dust collector 100.

[0051] Please refer to Figure 1 、 Figure 3 、 Figure 5 、 Figure 6 and Figure 9As shown, in this embodiment, the dust collection bin 20 includes an inner bin 21 and an outer bin 22. The inner bin 21 is disposed inside the outer bin 22 and is spaced apart from at least a portion of the outer bin 22 to form a sound insulation cavity 201. The inner bin 21 and the outer bin 22 are connected to seal the sound insulation cavity 201. The sound insulation cavity 201 serves to isolate noise and reduce the noise during the operation of the vacuum cleaner. Specifically, the sound insulation cavity 201 is barrel-shaped, with its annular walls of the inner bin 21 and the outer bin 22 spaced apart from each other, and the bottom walls of the inner bin 21 and the outer bin 22 are also spaced apart from each other to form the sound insulation cavity 201. In some other embodiments, the bottom of the inner tub 21 is provided with a first through hole 202 and a protrusion 203. The protrusion 203 is located between the inner tub 21 and the outer tub 22, so that there is a certain gap between the inner tub 21 and the outer tub 22. This allows the dust and debris separated by the dust-air separation device 30 to enter the outer tub 22 through the first through hole 202. When dumping dust, the dust is discharged into the outer tub 22 through the first through hole 202, without the need to disassemble the dust-air separation device 30, which facilitates dust cleaning.

[0052] Please see Figure 5 and Figure 6 As shown, in this embodiment, the inner bucket 21 includes a first bucket portion 211 and a first connecting portion 212, with the first connecting portion 212 disposed at the opening of the first bucket portion 211. The outer bucket 22 includes a second bucket portion 221 and a second connecting portion 222, with the second connecting portion 222 disposed at the opening of the second bucket portion 221. The first bucket portion 211 is disposed inside the second bucket portion 221, and the first bucket portion 211 and the second bucket portion 221 are spaced apart to form the sound insulation cavity 201. The first connecting portion 212 and the second connecting portion 222 cooperate to seal the sound insulation cavity 201, ensuring its airtightness and improving its noise reduction effect. Furthermore, the height of the dust collection bucket 20 is H, and the height of the sound insulation cavity 201 is h, where h ≥ 3 / 4H, to ensure the sound insulation and noise reduction effect of the sound insulation cavity 201 and effectively reduce the noise of the canister vacuum cleaner 100 during operation.

[0053] Please see Figure 5 , Figure 6 and Figure 7As shown, in the embodiment, the inner wall surface of the mounting cavity 101 comprises a connecting surface 1011, the connecting surface 1011 is provided with a second through hole 1012 which is in communication with the dust collecting barrel 20, specifically, the second through hole 1012 is in communication with the inner barrel 21, and a plurality of sealing rings are arranged between the dust collecting barrel 20 and the connecting surface 1011, wherein the innermost sealing ring is arranged around the second through hole 1012 to ensure the sealing of the barrel type dust collector 100, and the multi-layer sealing ring structure can further reduce the noise of the barrel type dust collector 100.

[0054] As shown in Figure 5 , Figure 6 and Figure 7 , in the embodiment, the multi-layer sealing ring comprises at least a first sealing ring 102 and a second sealing ring 103, the dust-gas separation device 30 is arranged in the inner barrel 21, the first sealing ring 102 is arranged between the dust-gas separation device 30 and the connecting surface 1011, and the second sealing ring 103 is arranged between the cover plate 23 of the dust collecting barrel 20 and the connecting surface 1011, the first sealing ring 102 and the second sealing ring 103 are respectively sealed under the extrusion of the connecting surface 1011 and the dust-gas separation device 30 and the cover plate 23, and the double-layer sealing structure further reduces the noise of the barrel type dust collector 100.

[0055] As shown in Figure 5 , Figure 6 and Figure 7 , in the embodiment, the connecting surface 1011 is arranged obliquely, specifically, one end of the connecting surface 1011 close to the opening is higher than the other end of the connecting surface 1011 away from the opening, and the height of one end of the first sealing ring 102 close to the opening is higher than the other end of the first sealing ring 102 away from the opening, and the height of the first sealing ring 102 gradually decreases from one end close to the opening to the other end away from the opening in the circumferential direction, which can well adapt to the connecting surface 1011 while ensuring the sealing property, and the second sealing ring 103 is arranged obliquely between the connecting surface 1011 and the cover plate 23, specifically, one end of the second sealing ring 103 close to the opening is higher than the other end of the second sealing ring 103 away from the opening, which can better adapt to the connecting surface 1011 and ensure the sealing property. Further, the multi-layer sealing rings are all arranged inside the barrel opening of the inner barrel 21 to effectively reduce the noise of the barrel type dust collector 100 while ensuring the sealing property.

[0056] As shown in Figure 5 and Figure 8As shown in the drawings, in the embodiment, the barrel cleaner 100 further comprises an air duct assembly 50 fixedly connected with the main body 10 and located above the dust-gas separation device 30, specifically above the connecting surface 1011. The air duct assembly 50 is formed with at least three layers of annular air ducts 501, and the innermost annular air duct 501 is in communication with the second through hole 1012 on the connecting surface 1011. The innermost annular air duct 501 is in communication with the inner space of the dust-gas separation device 30 through the second through hole 1012.

[0057] As shown in the drawings, Figure 5 and Figure 8 As shown in the drawings, in the embodiment, the air duct assembly 50 further comprises a radial air duct 502 connected at the outlet of the three layers of annular air ducts 501. The outlet of the radial air duct 502 is opposite to the opening of the mounting cavity 101. In the embodiment, the vacuum motor 60 is fixedly connected with the air duct assembly 50 and arranged in the innermost annular air duct 501 of the three layers of annular air ducts 501. The outermost annular air duct 501 is in communication with the radial air duct 502. The innermost annular air duct 501 is in communication with the inner space of the dust-gas separation device 30 through the second through hole 1012. The air carrying dust or debris enters the inner barrel 21 from the air inlet 40, and the clean air filtered by the dust-gas separation device 30 enters the annular air duct 501 of the air duct assembly 50 through the second through hole 1012 on the connecting surface 1011, and finally is discharged outside the barrel cleaner 100 through the radial air duct 502. In the embodiment, the end of the radial air duct 502 close to the annular air duct 501 is tangent to the outer annular air duct 501. The structure of the three layers of annular air ducts 501 arranged around the vacuum motor 60 effectively prolongs the length of the annular air duct 501 and realizes tangential air outlet, which can effectively reduce the noise of the barrel cleaner 100, improve the efficiency of the barrel cleaner 100, and improve the use experience.

[0058] As shown in the drawings, Figure 5 and Figure 8As shown in the drawings, in the present embodiment, a circuit board 70 is arranged in the radial air duct 502, and the extending direction of the circuit board 70 is not parallel to the extending direction of the radial air duct 502, for example, the extending direction of the circuit board 70 is arranged to be parallel to or inclined to the extending direction of the radial air duct 502, specifically, the extending direction of the circuit board 70 can be arranged to extend along the air outlet direction of the three-layer annular air duct 501 or be tangent to the outlet of the outermost annular air duct 501 in the three-layer air duct, and the circuit board 70 can be arranged to be inclined in the radial air duct 502 to avoid dust affecting the normal use of the circuit board 70, and can effectively improve the heat dissipation effect of the circuit board 70 and ensure the normal work of the circuit board 70.

[0059] As shown in the drawings, Figure 1 , Figure 2 , Figure 5 and Figure 8 As shown in the drawings, in the present embodiment, a circuit board 70 is arranged in the radial air duct 502, and the extending direction of the circuit board 70 is not parallel to the extending direction of the radial air duct 502, for example, the extending direction of the circuit board 70 is arranged to be parallel to or inclined to the extending direction of the radial air duct 502, specifically, the extending direction of the circuit board 70 can be arranged to extend along the air outlet direction of the three-layer annular air duct 501 or be tangent to the outlet of the outermost annular air duct 501 in the three-layer air duct, and the circuit board 70 can be arranged to be inclined in the radial air duct 502 to avoid dust affecting the normal use of the circuit board 70, and can effectively improve the heat dissipation effect of the circuit board 70 and ensure the normal work of the circuit board 70.

[0060] As shown in the drawings, Figure 5 , Figure 6 , Figures 9 to 11As shown, in the embodiment, the dust-gas separation device 30 comprises a first partition plate 31, a cone 32, a lower shell 33, a filter screen 34 and a filter piece 35. The first partition plate 31 is attached to and sealed with the inner wall of the inner tub 21. For example, the first partition plate 31 is in a circular structure, the outer edge of which is attached to and sealed with the inner wall of the inner tub 21. For example, a sealing ring is arranged on the outer edge of the first partition plate 31. The sealing ring is deformed under the extrusion of the inner tub 21 and the first partition plate 31 to achieve sealing. The first partition plate 31 is provided with a ventilation hole 301. The cone 32 is installed at the bottom of the first partition plate 31. The larger-diameter end of the cone body 321 of the cone 32 is in communication with the ventilation hole 301. The lower shell 33 is installed at the bottom of the cone 32. For example, the lower shell 33 comprises a second partition plate 331 and a shell body 332. The second partition plate 331 is connected with the bottom of the cone 32. The shell body 332 is installed at the bottom of the second partition plate 331. The filter screen 34 is arranged around the outside of the cone 32 and is connected with the first partition plate 31 and the second partition plate 331 of the lower shell 33. The filter piece 35 is arranged above the first partition plate 31 and covers the second through hole 1012 on the connecting surface 1011. In the embodiment, the dust-gas separation device 30 further comprises a top bracket 36. The filter piece 35 is arranged, for example, a Hepa assembly, which is installed in the top bracket 36. The first sealing ring 102 is arranged on the top bracket 36.

[0061] Please refer to Figure 5 、 Figure 6 、 Figures 9 to 11As shown, in the embodiment, the cone 32 comprises a plurality of cone bodies 321 and air inlets 322, the cone bodies 321 are arranged on the bottom surface of the first partition plate 31 and communicate with the air holes 301, the air inlets 322 are formed on the top of each of the cone bodies 321 and communicate with the inner chamber of the cone bodies 321, after the airflow passes through the filter screen 34, the airflow enters the cone bodies 321 through the air inlets 322, rotates in the cone bodies 321, and makes the dust particles enter the lower shell 33 through the bottom opening of the cone bodies 321 to realize dust-air separation. Further, in the embodiment, the air inlets 322 are tangent to the inner wall of the cone bodies 321 to further ensure that the entering airflow can form a rotating airflow to improve the dust-air separation effect. In the embodiment, the first partition plate 31 can be designed as a layered structure, that is, it comprises a first part 311 and a second part 312, the distance of the first part 311 from the bottom surface of the inner barrel 21 is greater than the distance of the second part 312 from the bottom surface of the inner barrel 21, and the bottom surfaces of the first part 311 and the second part 312 are both provided with a plurality of cone bodies 321, so that the plurality of cone bodies 321 are arranged in layers, and the air inlets 322 at the top thereof are arranged in layers to ensure the air volume entering each cone body 321, ensure that each cone body 321 can play a dust-air separation role to the greatest extent, and ensure the dust-air separation efficiency and effect.

[0062] As shown in Figure 5 , Figure 6 , Figures 9 to 11 As shown, in the embodiment, the circumferential direction of each air hole 301 of the first partition plate 31 is provided with a protruding structure 302, the protruding structure 302 extends to the inner space of the cone body 321, which can effectively reduce the amount of dust that directly passes through the filter 35 through the air hole 301, ensure that the dust is filtered and separated in the cone 32, prolong the service life of the filter 35, and ensure the filtering effect of the dust-air separation device 30.

[0063] As shown in Figure 5 , Figure 6 , Figures 9 to 11As shown, in this embodiment, the vacuum motor 60 is started, and the air carrying dust and other debris enters the dust-air separation device 30 through the air inlet 40, passes through the filter screen 34 and enters the cone 32. The filter screen 34 performs dust-air separation. The airflow after passing through the filter screen 34 enters the cone body 321 through the air inlet 322 on the cone 32. A rotating airflow is formed in the cone body 321. Under the action of centrifugal force, some dust enters the lower inner barrel 21 for dust-air separation again. The airflow after dust-air separation in the cone body 321 enters through the vent 301, passes through the filter element 35 and enters the circumferential air duct 501, where dust-air separation is achieved again. The airflow after multiple dust-air separations is discharged through the circumferential air duct 501 and the radial air duct 502 to ensure that the gas discharged from the canister vacuum cleaner 100 is clean air.

[0064] This utility model proposes a canister vacuum cleaner 100, which features a double-layer dust collection bin structure including an inner bin 21 and an outer bin 22, with a sound insulation cavity 201 formed between the inner bin 21 and the outer bin 22 to reduce noise. Simultaneously, by providing at least three layers of circumferential air ducts 501 around the outside of the vacuum motor 60, and with the radial air duct 502 near the outermost circumferential air duct 501 being tangent to the outermost circumferential air duct 501, the efficiency of the canister vacuum cleaner 100 is improved, and the noise of the canister vacuum cleaner 100 is further reduced. Furthermore, by providing at least two sealing rings between the air duct assembly 50 and the dust collection bin 20, the noise of the canister vacuum cleaner 100 is further reduced through a double-layer sealing structure. At the same time, a multi-cone dust-air separation device 30 is used to achieve dust-air filtration, improving the filtration efficiency of the canister vacuum cleaner 100 and ensuring filtration effect.

[0065] This utility model proposes a canister vacuum cleaner 100, which is designed with a circuit board 70 that is compatible with both AC and DC power modes, so that the canister vacuum cleaner 100 can use AC or DC power to adapt to different usage scenarios; two detachable battery packs 200 are designed on the main body 10 to further increase the battery life of the canister vacuum cleaner 100.

[0066] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

[0067] In the description, numerous specific details are provided, such as examples of components and / or methods, to provide a thorough understanding of embodiments of the present application. Applicants have provided this description along with the example to illustrate example embodiments of the present application and to enable a person having ordinary skill in the art to make, use and / or practice the concepts of the present application. However, the application can be practiced without many or all of the

[0068] Reference throughout this specification to "an embodiment", "embodiments" or "certain embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application and can not be included in all embodiments. Thus, the appearance of the phrases in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular

[0069] It is also to be understood that one or more of the elements of the drawings, expressed by the use of dashed lines, or even removed because in certain cases cannot operate or because they can be provided according to the specific application, can be implemented in a more isolated or more integrated manner.

[0070] In addition, unless explicitly stated otherwise, any directional arrows herein are to be taken in only a exemplary, and not limiting sense. Additionally, unless otherwise indicated, the use of the term "or" in this document is generally intended to mean "and / or". Where the term is used in a predictive sense, the combination of elements or steps is also to be considered as having been indicated.

[0071] As used in this description and claim, unless otherwise specified, "a" or "an" can mean "one or more."

[0072] The above description of the illustrated embodiments of the present application (including that described in the Abstract) is not intended to be exhaustive or to limit the application to the precise forms disclosed. While specific embodiments of, and examples for, the application are described herein for illustrative purposes, various equivalent modifications are possible within the spirit and scope of the application, as those skilled in the relevant art will recognize and appreciate. As indicated, these modifications can be made to the application in light of the foregoing description of the illustrated embodiments of the application and the examples without departing from the spirit and scope of the application. It is to be understood that the role of certain features can be interchanged within the spirit and scope of the application or that certain features could be rendered unnecessary in some embodiments of the application. The teachings of the application provided herein can be applied to other systems, not only for the systems and methods directly or implicitly presented and described herein.

[0073] The systems and methods have been described generally herein as facilitating an understanding of the details of the application. Moreover, various specific details have been given in order to provide a thorough understanding. It will be appreciated, however, that one of ordinary skill in the relevant art will recognize that embodiments of the application can be practiced without one or more of the specific details, or with other apparatus, systems, assemblies, methods, components, materials, parts, and the like. In other instances, well-known structures, materials, and / or operations have not been shown or described in detail in order to avoid obscuring aspects of embodiments of the application.

[0074] Accordingly, although the application has been described herein in reference to specific embodiments thereof, many modifications, alterations and changes can be suggested to one skilled in the art and it is intended to include all such modifications, alterations and changes in the scope of the application, insofar as they do not depart from the spirit and scope of the application. Accordingly, the scope of the application is not intended to be limited to the particular forms disclosed, but includes all features which come within the scope of the appended claims, and equivalents thereof. The scope of the application will be determined solely by the appended claims.

Claims

1. A canister vacuum cleaner characterised in that, The utility model relates to a dust collecting device, including: a main body, which is provided with a mounting cavity with an opening; a dust collecting barrel, which is detachably arranged in the mounting cavity, and includes an inner barrel and an outer barrel, the inner barrel is arranged in the outer barrel and spaced from at least a part of the outer barrel to form a sound insulation cavity, and the inner barrel is connected with the outer barrel to close the sound insulation cavity.

2. The canister vacuum cleaner of claim 1, wherein The sound insulation cavity is in the shape of a barrel.

3. The canister vacuum cleaner of claim 2, wherein, The inner barrel includes a first barrel part and a first connecting part arranged at the barrel opening of the first barrel part, the outer barrel includes a second barrel part and a second connecting part arranged at the barrel opening of the second barrel part, the first barrel part and the second barrel part are spaced to form a sound insulation cavity, and the first connecting part is connected with the second connecting part to close the sound insulation cavity.

4. The canister vacuum cleaner of claim 1, wherein The height of the dust collecting barrel is H, and the height of the sound insulation cavity is h, h is greater than or equal to 3 / 4H.

5. The canister vacuum cleaner of claim 1, wherein, The inner wall surface of the mounting cavity includes a connecting surface, the connecting surface is provided with a through hole in communication with the dust collecting barrel, and a plurality of sealing rings are arranged between the dust collecting barrel and the connecting surface, and the innermost sealing ring is arranged around the through hole.

6. The canister vacuum cleaner of claim 5, wherein, The plurality of sealing rings include a first sealing ring and a second sealing ring, the dust collecting barrel is further provided with a dust gas separation device, the first sealing ring is arranged between the dust gas separation device and the connecting surface, and the second sealing ring is arranged between a cover plate of the dust collecting barrel and the connecting surface.

7. The canister vacuum cleaner of claim 6, wherein, The connecting surface is arranged in an inclined manner, one end of the connecting surface close to the opening is higher than the other end of the connecting surface away from the opening, the height of one end of the first sealing ring close to the opening is higher than the height of the other end of the first sealing ring away from the opening, and gradually decreases from one end close to the opening to the other end away from the opening, and the second sealing ring is arranged in an inclined manner between the connecting surface and the cover plate.

8. The canister vacuum cleaner of claim 5, wherein, The plurality of sealing rings are all located inside the barrel opening of the inner barrel.

9. The canister vacuum cleaner of claim 5, wherein, Further including an air duct assembly, which is fixedly connected with the main body and located above the connecting surface, and at least three layers of circumferential air ducts are arranged around the air duct assembly.

10. The canister vacuum cleaner of claim 9, wherein, The air duct assembly further includes a radial air duct, which is connected at the outlet of the circumferential air duct arranged around, and a circuit board is arranged in the radial air duct.

11. The canister vacuum cleaner of claim 10, wherein, The extension direction of the circuit board is arranged in parallel with or in an inclined manner with the extension direction of the radial air duct.

12. The canister vacuum cleaner of claim 10, wherein, The outlet of the radial air duct is directed in the opposite direction of the opening of the mounting cavity.

13. The canister vacuum cleaner of claim 10, wherein, The circuit board includes an alternating current power supply mode and a direct current power supply mode.

14. The canister vacuum cleaner of claim 6, wherein, The dust gas separation device includes: a partition plate, which is attached to and sealed with the inner wall of the inner barrel, and is provided with a ventilation hole; a cone, which is installed at the bottom of the partition plate, and the larger-diameter end of the cone is in communication with the ventilation hole; a lower shell, which is installed at the bottom of the cone and abuts against the bottom surface of the inner barrel; a filter screen, which is arranged around the outside of the cone and connected with the partition plate and the lower shell; a filter element, which is arranged above the partition plate and covers the through hole.

15. The canister vacuum cleaner of claim 14, wherein, The cone includes: a plurality of cone bodies, which are located at the bottom surface of the partition plate and correspond to the ventilation hole; the top of the cone body is formed with an air inlet, which is in communication with the internal chamber of the cone body and tangent to the inner wall of the cone body.

16. The canister vacuum cleaner of claim 15, wherein, A convex structure is arranged circumferentially around each vent hole of the partition plate, and the convex structure extends to the interior space of the tapered body.

17. The canister vacuum cleaner of claim 1, wherein, At least two battery pack mounting cavities are arranged on the main body, and the battery pack mounting cavities are located on one side of the mounting cavity.

18. The canister vacuum cleaner of claim 1, wherein, An air inlet is further formed on the main body, and the air inlet is opposite to the opening of the mounting cavity in the direction, and the air inlet communicates with the interior space of the inner tub.

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