Dust collection device for vacuum cleaner

Abstract

The present invention relates to a dust collecting device for a vacuum cleaner, comprising: a base and a dust bucket assembly detachable from the base, the base comprising a boss; the dust bucket assembly comprising an outer shell; a filter arranged inside the outer shell, the filter comprising a cylindrical filter cartridge having a plurality of meshes and a first support member; a bottom cover arranged at the lower end of the outer shell, the bottom cover comprising a telescopic deformation portion, the telescopic deformation portion having a stretched position and a folded position; a cyclone separation chamber; a dust removal mechanism, the dust removal mechanism comprising a second support member, an ash pressing plate fixedly arranged on the second support member, and a spring arranged between the first and second support members, the ash pressing plate being located below the filter, and the ash pressing plate being movable up and down between at least a first position close to the filter and a second position away from the filter. In the dust collecting device of the present invention, after the dust bucket assembly is removed from the base, the ash pressing plate can automatically move downward, thereby cleaning the dust in the cyclone separation chamber.

Description

Technical Field

[0001] The invention relates to the technical field of cleaning equipment, in particular to a dirty liquid recovery barrel. Background Art

[0002] Cyclone vacuum cleaners are common household cleaning devices that draw solid debris from the surface to be cleaned, along with air, into a dust collector. The solid debris and air are then separated in the cyclonic separation chamber, leaving large dust particles trapped inside while fine dust particles are exhausted to the outside of the dust collector along with the air. Once the dust collector is full, the user must dump the dust into the trash according to designated procedures. However, much of the debris entering the cyclonic separation chamber consists of lightweight, suspended waste, such as lint and wool strips. This requires the user to reach into the cyclonic separation chamber, pull out the debris, and manually clean the lint stuck to the outer wall of the cyclonic separation chamber's filter cartridge. This method not only easily contaminates the user's hands, but is also time-consuming and labor-intensive.

[0003] To improve the cleaning solution for the lightweight suspended waste within the aforementioned cyclone separation chamber, conventional techniques employ an operating element external to the dust collection device and a waste cleaning actuator within the cyclone separation chamber that is transmission-coupled to the operating element. By operating the operating element from outside the cyclone separation chamber, the internal waste cleaning actuator cleans the cyclone separation chamber's interior walls. However, since the external operating element must be transmission-coupled to the internal waste cleaning actuator, this inevitably creates an airtight seal within the cyclone separation chamber. This requires a complex airtight seal structure, which increases the cost of the components. Furthermore, since the operating element still requires active user operation, the probability of missed operations is high. Summary of the Invention

[0004] In order to solve the problem of inconvenience in cleaning the garbage in the cyclone separation chamber, the present invention aims to provide a dust collecting device for a vacuum cleaner that is easy to use.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solution: a dust collecting device for a vacuum cleaner, comprising:

[0006] A base comprising a base surface and a boss protruding upward relative to the base surface; and

[0007] A dust bucket assembly is detachably supported on the base, and the dust bucket assembly includes:

[0008] outer shell;

[0009] a filter arranged inside the outer shell, the filter comprising a cylindrical filter cartridge having a plurality of meshes and a first support member for supporting the filter cartridge;

[0010] a bottom cover, disposed at the lower end of the outer shell, the bottom cover comprising a telescopic deformable portion, the telescopic deformable portion having a stretched position extending toward the inner side of the outer shell and a folded position;

[0011] a cyclonic separation chamber, at least partially defined by the outer shell, the filter, and the bottom cover;

[0012] a dust removal mechanism located in the cyclone separation chamber, the dust removal mechanism comprising a second support member connected to the first support member and movable up and down relative to the first support member, a dust pressing plate fixedly disposed on the second support member, and a spring disposed between the second support member and the first support member, the dust pressing plate being located below the filter and movable up and down between at least a first position close to the filter and a second position away from the filter;

[0013] The dust collecting device has multiple states, including:

[0014] a first state, in which the dust bucket assembly is supported on the base, the boss pushes the telescopic deformable portion upward to the stretched position from the bottom, the upper end of the telescopic deformable portion abuts against the lower end of the second support member, and the dust pressing plate is in the first position; and

[0015] The second state, in the second state, the dust bucket assembly is removed from the base, the telescopic deformation portion is located in the folded position, and the dust pressing plate is in the second position.

[0016] For the above dust collecting device, in the second state, the telescopic deformable portion may be configured to press against the lower end portion of the second supporting member.

[0017] As an improvement to the dust collecting device of the present invention, the bottom cover is openably and closably arranged at the lower part of the outer shell.

[0018] As a further improvement of the dust collecting device of the present invention, the dust pressing plate can move up and down between the second position and a third position further away from the filter relative to the second position; the multiple states include:

[0019] The third state. In the third state, the dust bucket assembly is removed from the base, the telescopic deformable portion is located in the folded position, the bottom cover is away from the lower part of the outer shell and the telescopic deformable portion is away from the lower end part of the second support member, and the dust pressing plate is in the third position.

[0020] As an improvement to the above-mentioned dust collecting device of the present invention, the dust removal mechanism also includes a first scraper, which is fixed on the second support member; when the dust pressing plate moves up and down between the first position and the second position, the first scraper abuts against the outer wall of the cylindrical filter cylinder and the first scraper can move up and down along the outer wall of the cylindrical filter cylinder as the dust pressing plate moves up and down.

[0021] As a further improvement of the above-mentioned dust collecting device of the present invention, the dust removal mechanism also includes a second scraper, which is fixed on the second support member; when the dust pressing plate moves up and down between the first position and the second position, the second scraper abuts against the inner wall surface of the outer shell and the second scraper can move up and down along the inner wall surface of the outer shell as the dust pressing plate moves up and down.

[0022] As a further improvement to the dust collecting device of the present invention, the first scraping bar and the second scraping bar are both ring-shaped.

[0023] As an improvement to the dust collecting device of the present invention, the telescopic deformable portion is made of a soft material with elasticity.

[0024] As an improvement to the dust collecting device of the present invention, the first support member and the outer shell are integrally formed as an injection molded part.

[0025] As a further improvement to the dust collecting device of the present invention, the first support member and the cylindrical filter cartridge are integrally formed as an injection molded part.

[0026] As an improvement to the above-mentioned dust collecting device of the present invention, the dust pressing plate is in the shape of a disc.

[0027] As an improvement to the dust collecting device of the present invention, the second support member and the dust pressing plate are an integral injection molded part.

[0028] As an improvement to the dust collecting device of the present invention, the retractable deformable portion in the stretched position is tower-shaped.

[0029] As an improvement to the dust collecting device of the present invention, the dust removal mechanism further includes a sealing gasket arranged on the upper surface of the dust pressing plate; when the dust pressing plate is in the first position, the sealing gasket is filled between the dust pressing plate and the first support member.

[0030] As an improvement to the above-mentioned dust collecting device of the present invention, the first support member is defined as a storage chamber isolated from the cyclone separation chamber, and the storage chamber has a lower opening; part of the second support member extends into the storage chamber through the lower opening and constrains the spring in the storage chamber.

[0031] As an improvement to the above-mentioned dust collecting device of the present invention, the bottom cover also includes an annular rigid part, and the telescopic deformable part is fixedly arranged on the inner side of the rigid part; when the telescopic deformable part is in the folded position, the telescopic deformable part is retracted toward the rigid part.

[0032] As a further improvement of the dust collecting device of the present invention, when the dust collecting device is in the first state, the rigid portion abuts against the base surface.

[0033] The dust collection device of the present invention automatically switches from the first state to the second state after the dust bucket assembly is removed from the base, and the dust pressing plate simultaneously moves downward to compact the dust in the cyclonic separation chamber toward the bottom cover. This means that the user does not need to perform excessive operations to clean the dust in the cyclonic separation chamber of the dust collection device of the present invention.

[0034] In addition to the technical problems solved by the present invention, the technical features that constitute the technical solutions, and the advantages brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the dust collecting device of the present invention, other technical features included in the technical solutions, and the advantages brought about by these technical features will be further described in detail in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a cross-sectional schematic diagram of the dust collecting device of the present invention in a first state;

[0036] Figure 2 is a cross-sectional schematic diagram of the dust collecting device of the present invention in a second state;

[0037] Figure 3 It is a cross-sectional schematic diagram of the dust collecting device of the present invention in the third state.

[0038] Among them: 100, dust collecting device; 1, base; 2, dust bucket assembly; 11, base surface; 12, boss; 21, outer shell; 22, filter; 23, bottom cover; 24, dust removal mechanism; 2211, mesh; 221, cylindrical filter cartridge; 222, first support member; 223, exhaust channel; 20, cyclone separation chamber; 224, storage chamber; 2241, lower opening; 231, rigid part; 232, telescopic deformation part; 201, cyclone separation section; 16, outer side wall; 202, dust collecting section; 24, dust removal mechanism; 241, second support member; 242, dust pressing plate; 243, first scraper; 244, second scraper; 245, spring; 2241, lower opening; 246, sealing gasket. DETAILED DESCRIPTION

[0039] In order to describe the technical content, structural features, achieved purposes and effects of the invention in detail, the technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. In the following description, for the purpose of explanation, many specific details are set forth to provide a detailed description of various exemplary embodiments or implementations of the invention. However, various exemplary embodiments may also be implemented without these specific details or in the presence of one or more equivalent arrangements. In addition, various exemplary embodiments may be different, but are not necessarily exclusive. For example, without departing from the inventive concept, the specific shape, structure and characteristics of the exemplary embodiment may be used or implemented in another exemplary embodiment.

[0040] like Figure 1-3 The dust collection device 100 shown is designed to be assembled into a vacuum cleaner for use in separating and temporarily storing trash and debris. The dust collection device 100 primarily consists of a base 1 and a dust bucket assembly 2. The base 1 is fixedly assembled or integrally formed within the vacuum cleaner body, while the dust bucket assembly 2 is detachably mounted on the base 1.

[0041] The base 1 includes a base surface 11 and a boss 12 protruding upward relative to the base surface 11. The base 1 can be a separate injection-molded component or can be integrally injection-molded with a portion of the main body of the vacuum cleaner to be assembled. Injection-molded components are low-cost and simple in structure.

[0042] The dust container assembly 2 is detachably supported on the base 1. Figure 2 The dust bucket assembly 2 shown in the figure mainly includes an outer shell 21, a filter 22, a bottom cover 23 and a dust removal mechanism 24.

[0043] The outer shell 21 is cylindrical and has an open lower portion. It is provided with an inlet (not shown) for introducing dust-laden airflow into the interior of the outer shell 21. A spiral flow channel may also be provided upstream of the inlet to guide the dust-laden airflow into the interior of the outer shell 21 in a spiral configuration. This spiral flow channel may be integrally injection-molded with the outer shell 21 or a separate component connected to the inlet of the outer shell 21.

[0044] The filter 22 is arranged inside the outer shell 21. The filter 22 includes a cylindrical filter cartridge 221 having a plurality of meshes 2211 and a first support member 222 for supporting the cylindrical filter cartridge 221. The cylindrical filter cartridge 221 is provided with a plurality of filter holes 2211. In this example, the first support member 222, the outer shell 21 and the cylindrical filter cartridge 221 are integrally injection molded parts. In other embodiments, the filter 22 as a whole or a separate filter cartridge can also be a component that can be removed separately. The inner side of the cylindrical filter cartridge 221 defines an exhaust channel 223. In addition, the first support member 222 defines a receiving chamber 224 isolated from the cyclone separation chamber 20, and the receiving chamber 224 has a lower opening 2241.

[0045] The bottom cover 23 is provided at the lower part of the outer shell 21 and is used to close the cyclone separation chamber 20 from the bottom. In this example, the bottom cover 23 is provided at the lower part of the outer shell 21 in an openable and closable manner. The bottom cover 23 is generally disc-shaped, and includes a ring-shaped rigid portion 231 and a telescopic deformable portion 232 fixedly provided on the inner side of the rigid portion 231. The telescopic deformable portion 232 is made of a soft material with elasticity, such as a rubber material. The telescopic deformable portion 232 has a stretched position extending toward the inner side of the cyclone separation chamber 20 and a folded position. Figure 1 As shown, when the telescopic deformation portion 232 is in the stretched position, the telescopic deformation portion 232 is deformed into a tower shape; Figure 2-3 As shown, when the telescopic deformable portion 232 is in the folded position, the telescopic deformable portion 232 is retracted toward the rigid portion 231 .

[0046] Thus, in the dust bucket assembly 2, the upper end of the outer shell 21 is closed by the first support member 222. The lower end of the outer shell 21 is sealed against and closed by the bottom cover 23. The outer shell 21, the filter 22 and the bottom cover 23 together define a cyclone separation chamber 20. The upper portion of the cyclone separation chamber 20 (i.e., the portion substantially defined between the upper portion of the outer shell 21 and the cylindrical filter cartridge 221) defines a cyclone separation section 201 in which the dust-laden airflow is cyclonically separated, while the lower portion of the cyclone separation chamber 20 (i.e., the portion substantially defined between the lower portion of the outer side wall 16, the bottom of the filter 22 and the bottom cover 23) defines a dust collecting section 202 in which dust is collected.

[0047] The dust removal mechanism 24 is used to process dust within the cyclonic separation chamber 20. Specifically, it processes dust on the inner wall of the outer shell 21, the outer wall of the cylindrical filter cartridge 221, the cyclonic separation section 201, and the dust collection section 202. The dust removal mechanism 24 includes a second support member 241 located within the cyclonic separation chamber 20 and connected to the first support member 222; a dust pressing plate 242 fixedly mounted on the second support member 241; a first scraping bar 243 and a second scraping bar 244 fixedly mounted on the second support member 241; and a spring 245 fixedly disposed between the second support member 241 and the first support member 222. The upper portion of the second support member 241 extends into the receiving chamber 224 through the lower opening 2241, thereby constraining the spring 245 within the receiving chamber 224. The second support member 241 can move up and down relative to the first support member 222. The dust pressing plate 242 is located below the filter 22. The dust pressing plate 242 is a disc-shaped injection molded part that is integrated with the second support member 241. The dust pressing plate 242 can be relative to the filter 22 at a first position (close to the lower end of the filter 22) Figure 1 The position of the medium pressure ash plate), the second position away from the lower end of the filter 22 ( Figure 2 The position of the medium pressure ash plate) and the third position ( Figure 3 The ash pressing plate 242 moves up and down between the first position, the second position and the third position. When the ash pressing plate 242 moves up and down between the first position, the second position and the third position, the first scraper 243 abuts against the outer wall of the cylindrical filter cartridge 221 and the first scraper 243 can move up and down along the outer wall of the cylindrical filter cartridge 221 as the ash pressing plate 242 moves up and down; the second scraper 244 abuts against the inner wall of the outer shell 21 and the second scraper 244 can move up and down along the inner wall of the outer shell 21 as the ash pressing plate 242 moves up and down. A sealing gasket 246 is fixedly provided on the upper surface of the ash pressing plate 242. The first scraper 243 and the second scraper 244 are both annular, and they can be made entirely of a flexible rubber material, or partially of a flexible rubber material.

[0048] The dust collecting device 100 of the present invention has at least a first state and a second state, which are specifically as follows:

[0049] See also Figure 1As shown, the dust collecting device 100 is in a first state, in which the dust bucket assembly 2 is supported on the base 1, the rigid part 231 is in contact with the base surface 11, and the boss 12 pushes the telescopic deformable part 232 upward to a tower-shaped stretched position from the bottom side, and the upper end of the telescopic deformable part 232 is pressed against the lower end of the second support member 241, and the dust pressing plate 242 is in the first position, and the dust pressing plate 242 is close to the lower end of the filter 22, and the sealing gasket 246 is filled between the dust pressing plate 242 and the lower end of the first support member 222, and the spring 245 is in a first compression state, and the first scraper 243 is parked at a position close to the upper part of the cylindrical filter cartridge 221, and the second scraper 244 is parked at a position located at the upper part of the outer shell 21.

[0050] See also Figure 2 As shown, the dust collecting device 100 is in a second state, in which the dust bucket assembly 2 is removed from the base 1, the rigid part 231 is disengaged from the base surface 11, the boss 12 is disengaged from the telescopic deformable part 232, and the telescopic deformable part 232 is in a folded position, that is, the telescopic deformable part 232 is retracted toward the rigid part 231, and the upper end of the telescopic deformable part 232 is still in contact with the lower end of the second support member 241; the dust pressing plate 242 is in the second position, and the dust pressing plate 242 falls at a position away from the lower end of the filter 22, and the spring 245 is in a second compressed state (the spring releases part of the reset force in the second compressed state relative to the first compressed state), the first scraper 243 is parked at a position near the lower middle of the cylindrical filter cartridge 221, and the second scraper 244 is parked at a position near the lower middle of the outer shell 21.

[0051] See also Figure 3 As shown, the dust collecting device 100 is in a third state, in which the dust bucket assembly 2 is removed from the base 1, the rigid part 231 is disengaged from the base surface 11, the boss 12 is disengaged from the telescopic deformable part 232, and the telescopic deformable part 232 is in a folded position, that is, the telescopic deformable part 232 is retracted toward the rigid part 231, and the upper end of the telescopic deformable part 232 is away from the lower end of the second support member 241; the dust pressing plate 242 is in the third position, and the dust pressing plate 242 falls at a position further away from the lower end of the filter 22, the spring 245 is in a natural state (the spring has released all the reset force and returned to a free state), the first scraper 243 is parked near the lower part of the cylindrical filter cartridge 221, and the second scraper 244 is parked at a position located at the lower part of the outer shell 21.

[0052] In the present invention, the dust collecting device 100 is in the first state during operation; and as the user turns off or temporarily pauses the operation of the dust collecting device 100 and removes the dust bucket assembly 2 from the base 1, the dust collecting device 100 automatically switches from the first state to the second state, and loses the effect of the boss 12 on the base 1. The telescopic deformable portion 232 on the bottom cover 23 returns to the folded position under the action of its own deformation or / and the elastic force of the spring 245, and the dust collecting mechanism 24 starts to operate under the action of the spring 245. Specifically, the second support 232 is in the second state. Component 241 will first move downward under the action of spring 245, and the dust pressing plate 242 will fall from the first position to the second position and compact the dust in the dust collecting section 202 toward the bottom cover 23. The first scraper 243 moves from a position close to the upper part of the cylindrical filter cartridge 221 to a position close to the middle and lower part of the cylindrical filter cartridge 221 and removes dust from the outer wall of the cylindrical filter cartridge 221. The second scraper 244 moves from a position close to the upper part of the outer shell 21 to a position close to the middle and lower part of the outer shell 21 and removes dust from the inner wall of the outer shell 21.

[0053] When the dust collecting device 100 is in the second state, if the solid waste in the cyclone separation chamber 20 needs to be dumped, the bottom cover 23 is opened, and the dust collecting device 100 will automatically switch from the second state to the third state, and the retractable deformation part 232 moves away from the lower end of the second support member 241. The second support member 241 moves further downward under the action of the spring 245, and the dust pressing plate 242 falls from the second position to the third position and realizes that the dust in the dust collecting section 202 is further compacted toward the bottom cover 23. The first scraper 243 moves from a position close to the middle and lower part of the cylindrical filter cartridge 221 to a position close to the lower part of the cylindrical filter cartridge 221 and realizes the dust removal effect on the outer wall of the cylindrical filter cartridge 221. The second scraper 244 moves from a position close to the middle and lower part of the outer shell 21 to a position close to the lower part of the outer shell 21 and realizes the dust removal effect on the inner wall of the outer shell 21.

[0054] When the dust in the dust bin assembly 2 is finished, as the user closes the bottom cover 23, the dust collecting device 100 will automatically switch from the third state to the second state, the dust pressing plate 242 moves upward from the third position to the second position, the first scraping strip 243 and the second scraping strip 244 both move upward, the telescopic deformation portion 232 abuts against the lower end of the second support member 241, and the spring 245 is partially compressed; and after the dust bin assembly 2 is installed on the base 1, under the action of the boss 12, the telescopic deformation portion 232 on the bottom cover 23 is pushed upward and changed to the stretched position, and the second At the same time, the support member 241 is pushed downward, and the dust pressing plate 242, the first scraper 243 and the second scraper 244 all move upward. During this process, the dust pressing plate 242 moves to the first position, the first scraper 243 moves upward to a position close to the upper part of the cylindrical filter cylinder 221 and realizes the dust removal effect on the outer wall of the cylindrical filter cylinder 221, and the second scraper 244 moves to a position close to the upper part of the outer shell 21 and realizes the dust removal effect on the inner wall of the outer shell 21. The spring 245 is further compressed, and the dust collecting device 100 enters the first state.

[0055] In other embodiments, the dust suppression plate may only move between the first and second positions. Specifically, when the dust collection device enters the second position, the spring releases its full restoring force and returns to its natural position. In this case, if the bottom cover is also removable, the positions of the dust suppression plate, the first scraping bar, and the second scraping bar remain unchanged upon opening the bottom cover. In other embodiments, the first scraping bar or the second scraping bar may be omitted, with only the dust suppression plate being provided.

[0056] The dust collecting device of the present invention can simultaneously compress the dust in the dust collecting section and remove dust from the inner wall of the outer shell and the outer wall of the filter cartridge when the dust bucket assembly is removed from the base or installed on the base. It does not require a separate external dust removal operating part, is simple to operate, and is highly convenient to use. It can be assembled in various vacuum cleaners for use.

[0057] The basic principles, main features and advantages of the present invention are shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims, the description and their equivalents.

Claims

1. A dust collecting device for a vacuum cleaner, characterized in that: The dust collecting device (100) has: A base (1) comprising a base surface (11) and a boss (12) protruding upward relative to the base surface (11); and The dust bucket assembly (2) is detachably supported on the base (1), and the dust bucket assembly (2) comprises: outer shell (21); A filter (22) is arranged inside the outer shell (21), the filter (22) comprising a cylindrical filter cartridge (221) having a plurality of meshes (2211) and a first support member (222) for supporting the filter cartridge (221); A bottom cover (23) is provided at the lower end of the outer shell (21), the bottom cover (23) comprising a telescopic deformation portion (232), the telescopic deformation portion (232) having a stretched position extending toward the inner side of the outer shell (21) and a folded position; a cyclonic separation chamber (20) at least partially defined by the outer shell (21), the filter (22) and the bottom cover (23); and A dust removal mechanism (24) is located in the cyclone separation chamber (20), the dust removal mechanism (24) comprising a second support member (241) connected to the first support member (222) and movable up and down relative to the first support member (222), an ash pressing plate (242) fixedly arranged on the second support member (241), and a spring (245) arranged between the second support member (241) and the first support member (222), the ash pressing plate (242) being located below the filter (22), and the ash pressing plate (242) being movable up and down between at least a first position close to the filter (22), a second position away from the filter (22), and a third position further away from the filter (22) relative to the second position; The dust collecting device has multiple states, including: A first state, in which the dust bucket assembly (2) is supported on the base (1), the boss (12) lifts the telescopic deformable portion (232) upward to the stretched position from the bottom, the upper end of the telescopic deformable portion (232) abuts against the lower end of the second support member (241), and the dust pressing plate (242) is in the first position; a second state, in which the dust bucket assembly (2) is detached from the base (1), the telescopic deformable portion (232) is located in the folded position, and the dust pressing plate (242) is located in the second position; and A third state, in which the dust bucket assembly (2) is removed from the base (1), the telescopic deformable portion (232) is located in the folded position, the bottom cover (23) is away from the lower portion of the outer shell (21), and the telescopic deformable portion (232) is away from the lower end portion of the second support member (241), and the dust pressing plate (242) is in the third position.

2. The dust collecting device according to claim 1, characterized in that In the second state, the telescopic deformation portion (232) is pressed against the lower end portion of the second support member (241).

3. The dust collecting device according to claim 2, characterized in that The bottom cover (23) is arranged at the lower part of the outer shell (21) in an openable and closable manner.

4. The dust collecting device according to claim 1, characterized in that The dust removal mechanism (24) further includes a first scraper (243), and the first scraper (243) is fixedly arranged on the second support member (241); when the ash pressing plate (242) moves up and down between the first position and the second position, the first scraper (243) abuts against the outer wall surface of the cylindrical filter cylinder (221), and the first scraper (243) can move up and down along the outer wall surface of the cylindrical filter cylinder (221) as the ash pressing plate (242) moves up and down.

5. The dust collecting device according to claim 4, characterized in that The dust removal mechanism (24) further includes a second scraper (244), and the second scraper (244) is fixedly arranged on the second support member (241); when the dust pressing plate (242) moves up and down between the first position and the second position, the second scraper (244) abuts against the inner wall surface of the outer shell (21) and the second scraper (244) can move up and down along the inner wall surface of the outer shell (21) as the dust pressing plate (242) moves up and down.

6. The dust collecting device according to claim 5, characterized in that The first scraper strip (243) and the second scraper strip (244) are both ring-shaped.

7. The dust collecting device according to claim 1, characterized in that The telescopic deformation portion (232) is made of a soft elastic material.

8. The dust collecting device according to claim 1, characterized in that The first support member (222) and the outer shell (21) are an integral injection-molded part.

9. The dust collecting device according to claim 8, characterized in that The first support member (222) and the cylindrical filter cartridge are an integral injection-molded part.

10. The dust collecting device according to claim 1, wherein: The ash pressing plate (242) is in the shape of a disk.

11. The dust collecting device according to claim 1, wherein The second support member (241) and the ash pressing plate (242) are an integral injection-molded part.

12. The dust collecting device according to claim 1, characterized in that The telescopic deformation portion (232) in the stretched position is tower-shaped.

13. The dust collecting device according to claim 1, characterized in that The dust removal mechanism (24) further includes a sealing gasket (246) arranged on the upper surface of the ash pressing plate (242); when the ash pressing plate (242) is in the first position, the sealing gasket (246) is filled between the ash pressing plate (242) and the first support member (222).

14. The dust collecting device according to claim 1, characterized in that The first support member (222) defines a receiving chamber (224) isolated from the cyclone separation chamber (20), and the receiving chamber (224) has a lower opening (2241); a portion of the second support member (241) extends into the receiving chamber (224) through the lower opening (2241) and constrains the spring (245) in the receiving chamber (224).

15. The dust collecting device according to claim 1, characterized in that The bottom cover (23) further comprises an annular rigid portion (231), and the telescopic deformable portion (232) is fixedly arranged on the inner side of the rigid portion (231); when the telescopic deformable portion (232) is in the folded position, the telescopic deformable portion (232) is retracted toward the rigid portion (231).

16. The dust collecting device according to claim 15, characterized in that When the dust collecting device (100) is in the first state, the rigid portion (231) abuts against the base surface (11).

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