Handheld dust collector

Abstract

The problem that an existing handheld dust collection device is poor in self-cleaning effect is solved. The handheld dust collector comprises a dust collection tank, an airflow power part and a filtering part, the airflow power part is communicated with the interior of the dust collection tank, and the filtering part is further arranged between the airflow power part and the inner space of the dust collection tank; the dust collection tank comprises a tank body, an air inlet nozzle and a sealing cover; wherein the air inlet nozzle is arranged on the outer side surface of the tank body and is communicated with the interior of the tank body; an air valve is arranged on the air inlet nozzle; the filtering piece is embedded in the upper end part of the tank body; the sealing cover is embedded above the filtering piece, and an airflow power piece is further fixedly arranged on the sealing cover; the sealing cover is further provided with a second air opening used for air inlet, and a valve is arranged at the end of the second air opening. After the air valve is closed, a negative pressure environment is formed in the tank body along with closing of the second air opening and air exhaust of the airflow power part, then the second air opening is opened, and airflow instantly entering the tank body achieves self-cleaning of the filtering part in the tank body.

Description

Technical Field

[0001] This utility model relates to the field of vacuum cleaner technology, and in particular to a handheld vacuum cleaner. Background Technology

[0002] With the development of motor and battery technology, traditional large vacuum cleaners are gradually being phased out in home environments, replaced by convenient handheld vacuum cleaners and vacuum-mopping all-in-one vacuum cleaners. Handheld vacuum cleaners typically consist of a motor, battery, and dustbin, as shown in patent CN220876655U. However, existing handheld vacuum cleaners can only perform vacuuming tasks; with repeated use, dust clogs the filter, significantly reducing suction efficiency. To maintain suction efficiency, frequent filter replacement or cleaning is necessary, which is inconvenient. Therefore, a handheld vacuum cleaner with rapid internal self-cleaning capabilities is needed. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies and provide a handheld vacuum cleaner.

[0004] To solve the above problems, the present invention adopts the following solution:

[0005] A handheld vacuum cleaner includes a dust collection canister, an airflow mechanism, and a filter. The airflow mechanism is connected to the interior of the dust collection canister, and the filter is disposed between the airflow mechanism and the interior space of the dust collection canister. The dust collection canister includes a canister body, an air inlet, and a sealing cap. The air inlet is located on the outer side of the canister body and is connected to the interior of the canister body. The air inlet is equipped with an on / off valve. The filter is embedded in the upper part of the canister body. The sealing cap is embedded above the filter, and an airflow mechanism for controlling airflow is fixedly disposed on the sealing cap. The sealing cap is also equipped with a second air inlet for air intake, and the end of the second air inlet is equipped with a valve capable of sealing and opening the second air inlet.

[0006] Furthermore, the bottom of the tank is also equipped with an openable tipping cover.

[0007] Furthermore, one side of the tipping cover is hinged to the bottom of the tank, and the other side is provided with a U-shaped buckle that engages with the bottom of the tank, for engaging with the groove provided on the bottom of the tank.

[0008] Furthermore, the air valve inside the air inlet is a rotatable knob, and the knob has an airflow channel corresponding to the air inlet; when the knob is at a set angle, the airflow channel inside the knob is connected to the air inlet; at other angles, the airflow channel inside the air inlet is blocked by the knob.

[0009] Furthermore, the end of the air inlet near the tank is tangentially connected to the tank or enters the tank at a set angle.

[0010] Furthermore, the filter element includes a filter screen and a connector; wherein the connector is generally annular, the inner ring of the connector is provided with a downwardly extending tubular portion for detachably connecting the filter screen, and the outer ring of the connector is used for detachably connecting to the upper end of the tank.

[0011] Furthermore, the tubular part is provided with two U-shaped slots that are symmetrically positioned, and a protruding snap-fit ​​post corresponding to the U-shaped slot is provided on the outer side of the upper end of the filter screen.

[0012] Furthermore, the outer ring of the connector is provided with an alignment block extending outward away from its center, and an alignment groove corresponding to the alignment block is provided at the upper end of the tank.

[0013] Furthermore, the valve is rotatably connected to the end of the second air vent; the rotatable connection is located in the middle of the valve, one side of the valve is opposite to the second air vent, and a spring is provided on the other side of the valve to help the valve hold the second air vent.

[0014] Furthermore, it also includes a battery pack and a housing. The housing is used to connect the dust collection tank and the battery pack. The housing is also equipped with a handle for easy gripping and a control switch for the pneumatic component. The battery pack is electrically connected to the pneumatic component, and the pneumatic component is also connected to the control switch.

[0015] The beneficial effects of this utility model are as follows:

[0016] By setting up a tank connected to the second air outlet, when the air valve is closed, the valve of the second air outlet opens and closes as the airflow power component draws air outward, controlling the airflow through the filter to switch between two directions, thereby achieving self-cleaning of the filter inside the tank.

[0017] By setting a knob inside the air inlet, a relatively sealed space is formed inside the tank during the self-cleaning process, which facilitates the formation of a negative pressure environment inside the tank in conjunction with the airflow power components, and the filter is cleaned in conjunction with the second air outlet.

[0018] The filter screen and connector are designed to be detachably connected, making it easy to replace the filter screen.

[0019] By installing valves, it is convenient to control the opening and closing of the second air vent. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of Example 1;

[0021] Figure 2This is a schematic diagram showing the assembly of the dust collection tank, filter element, and airflow power component in Example 1.

[0022] Figure 3 This is an exploded view of the dust collection tank, filter element, and pneumatic power component of Example 1;

[0023] Figure 4 This is a schematic diagram of the second air outlet and valve in Example 1;

[0024] Figure 5 This is an exploded view of the second air vent and valve section in Example 1;

[0025] Figure 6 This is an exploded view of the filter element in Example 1;

[0026] Figure 7 This is an exploded view of the dust collection tank of Example 1 with the sealing cap removed;

[0027] Figure 8 This is an exploded view of the dust collection tank with the sealing cap removed, from another angle, in Example 1.

[0028] Attached diagram labels: Dust collection tank 1, tank body 11, alignment groove 111, groove 112, air inlet 12, sealing cover 13, second air outlet 14, tilting cover 15, U-shaped buckle 151, knob 16, airflow channel 161, valve 17, spring 18, airflow power component 2, filter component 3, filter screen 31, connector 32, tubular part 33, U-shaped groove 34, snap-fit ​​column 35, alignment block 36, battery pack 4, outer shell 5, handle 51, control switch 52. Detailed Implementation

[0029] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0030] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the figures only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0031] Example 1:

[0032] like Figures 1-8As shown, a handheld vacuum cleaner includes a dust collection tank 1, an airflow propulsion component 2, and a filter element 3. The airflow propulsion component 2 is internally connected to the dust collection tank 1, and the filter element 3 is disposed between the internal space of the airflow propulsion component 2 and the dust collection tank 1. When the airflow propulsion component 2 is working, a low-pressure area is formed, thereby controlling the airflow to flow sequentially through the dust collection tank 1 and the filter element 3, leaving dust and other debris and impurities carried in the airflow in the area between the dust collection tank 1 and the filter element 3. The dust collection tank 1 includes a tank body 11, an air inlet 12, and a sealing cap 13. The air inlet 12 is disposed on the outer side of the tank body 11 and is internally connected to the tank body 11. The air inlet 12 is provided with an on / off valve. When the air valve is open, the air inlet can allow air to enter. When the air valve is closed, the side of the air inlet closer to the inside of the vacuum cleaner is separated from the side closer to the outside. The filter element 3... The filter element 3 is detachably embedded in the upper part of the tank body 11. In this example, the upper part of the inner wall of the tank body 11 is provided with an inwardly protruding snap ring structure for cooperating with the filter element 3. The sealing cover 13 is embedded above the filter element 3, and an airflow power component 2 is fixedly provided on the sealing cover 13. The airflow power component 2 can control the airflow and is used to achieve dust suction through the air inlet 12. The sealing cover 13 is also provided with a second air inlet 14 for air intake. The end of the second air inlet 14 is provided with a valve 17 that can seal the second air inlet 14 and open the second air inlet 14. The second air inlet 14 connects the area between the sealing cover 13 and the filter element 3. After the air valve is closed, the valve 17 is normally in the closed state, forming a negative pressure environment in the tank. After the valve 17 is opened, airflow can be introduced from the second air inlet 14 into the relatively vacuum dust collection tank to clean the dust attached to the filter element 3. It should be noted that a sealing ring is provided between the air valve and the air inlet for sealing. Similarly, a sealing structure is also provided between the valve and the second air outlet. Sealing structures are also provided at the mating parts between the sealing cover and the filter element, as well as between the filter element and the tank body, to ensure that the vacuum cleaner has a good sealing effect when closed. This helps the airflow components to form a negative pressure state more quickly inside the tank, and also improves its own dust collection effect.

[0033] The bottom of the tank 11 is also provided with an openable tipping cover 15. After opening the tipping cover 15, the dust and other impurities collected in the dust collection tank 1 can be poured out more easily, and the inside of the dust collection tank 1 can be cleaned. One side of the edge of the tipping cover 15 is hinged to the bottom of the tank 11, and the other side is provided with a U-shaped buckle 151 that engages with the bottom of the tank 11, which is used to engage with the groove 112 at the bottom of the tank 11. It should be noted that a through hole is also provided on the side of the groove 112 near the outer wall of the tank 11. The U-shaped buckle 151 in the groove 112 can be pressed through the through hole, so that the engagement between the U-shaped buckle 151 and the groove 112 is separated, thereby opening the tipping cover 15.

[0034] The air inlet 12 is equipped with a knob 16 inside, which serves as an air valve for controlling the opening and closing of the air inlet 12. The knob 16 is equipped with an airflow channel 161 corresponding to the air inlet 12. When the knob 16 is at a set angle, the airflow channel 161 inside the knob 16 is connected to the air inlet 12. When the knob 16 is rotated, the channel inside the air inlet 12 can be cut off. At this time, the airflow power component 2 is controlled to transmit airflow in the opposite direction, which facilitates the blowing out of the dust inside from the bottom-opening tilt cover 15 part, and the dust inside can be collected without removing the can, which is more convenient.

[0035] The air inlet 12 is tangentially connected to the tank 11 or inserted into the tank 11 at a set angle, so that the airflow blown into the tank 11 can move along the inner wall of the tank 11 to form a cyclone separation structure, instead of directly facing a specific area on the filter element 3. This allows the airflow in the tank 11 to pass through the filter element 3 in a more uniform distribution, making full use of the filtration effect of different parts of the filter element 3.

[0036] The filter element 3 includes a cup-shaped filter screen 31 and a connector 32. The connector 32 is generally annular, with a downwardly extending tubular portion 33 on the inner ring for detachably connecting the filter screen 31. The outer ring of the connector 32 is detachably connected to the upper end of the tank 11. In this example, the tubular portion 33 has two symmetrically positioned U-shaped slots 34, with the openings of the U-shaped slots 34 facing horizontally. A protruding snap-fit ​​post 35 corresponding to the U-shaped slot 34 is provided on the outer side of the upper end of the filter screen 31. By rotating the filter screen 31, the snap-fit ​​post 35 can be inserted into the U-shaped slot 34, thus achieving the snap-fit ​​connection between the filter screen 31 and the tubular portion 33.

[0037] The outer ring of the connector 32 is also provided with an alignment block 36 that extends outward away from its center. An alignment groove 111 corresponding to the alignment block 36 is provided at the upper end of the tank body 11 to ensure that the connector 32 is embedded into the tank body 11 in a relatively stable posture.

[0038] The airflow power component 2 includes a motor. The rotation of the motor, in conjunction with the fan blades mounted on it, generates airflow, which drives the flow of gas inside the vacuum cleaner.

[0039] The valve 17 is rotatably connected to the end of the second air vent 14. The rotatable connection is located in the middle of the valve 17. One side of the valve 17 at the rotatable connection corresponds to the second air vent 14. A spring 18 is provided on the other side of the valve 17 at the rotatable connection to help the valve 17 hold the second air vent 14. In use, the side of the valve 17 with the spring 18 can be pressed to control the motor in the airflow power device to reverse, thereby achieving reverse airflow and internal cleaning.

[0040] It also includes a battery pack 4 and a housing 5. The housing 5 is used to connect the dust collection tank 1 and the battery pack 4. The housing 5 is also provided with a handle 51 for easy gripping and a control switch 52 for the pneumatic component 2. The battery pack 4 is electrically connected to the pneumatic component 2, and the pneumatic component 2 is also connected to the control switch 52.

[0041] The end of the air inlet 12 away from the tank 11 is set with a beveled surface to facilitate cleaning of some gaps; the air inlet 12 can also be used to connect to flexible corrugated pipes and other structures, enriching the application scenarios.

[0042] During implementation, by setting up a tank 11 connected to the second air outlet 14, when the air valve is closed, the valve of the second air outlet repeatedly opens and closes during the outward air extraction process of the pneumatic power component, controlling the airflow through the filter to switch between two directions, thereby achieving self-cleaning of the filter inside the tank 11; by setting a knob 16 inside the air inlet 12, a relatively sealed space is formed inside the tank during the self-cleaning process, which facilitates the formation of a negative pressure environment inside the tank in conjunction with the pneumatic power component, and works with the second air outlet to clean the filter; by setting a detachable connection between the filter screen 31 and the connector 32, it is convenient to replace the filter screen 31; by setting a valve 17, it is convenient to control the opening and closing of the second air outlet 14.

[0043] The above description is merely a specific example of this utility model and does not constitute any limitation on this utility model. Obviously, those skilled in the art, after understanding the content and principle of this utility model, may make various modifications and changes in form and details without departing from the principle and structure of this utility model. However, these modifications and changes based on the concept of this utility model are still within the protection scope of the claims of this utility model.

Claims

1. A handheld vacuum cleaner, comprising a dust collection tank (1), an airflow power component (2), and a filter component (3), wherein the airflow power component (2) is internally connected to the dust collection tank (1), and a filter component (3) is further disposed between the internal space of the airflow power component (2) and the dust collection tank (1); characterized in that, The dust collection tank (1) includes a tank body (11), an air inlet (12), and a sealing cap (13); wherein the air inlet (12) is located on the outer side of the tank body (11) and communicates with the inside of the tank body (11); the air inlet (12) is provided with an air valve that can be opened and closed; the filter element (3) is embedded in the upper end of the tank body (11); the sealing cap (13) is embedded above the filter element (3), and a pneumatic power element (2) for controlling the airflow is fixedly provided on the sealing cap (13); the sealing cap (13) is also provided with a second air inlet (14) for air intake, and the end of the second air inlet (14) is provided with a valve (17) that can seal the second air inlet (14) and open the second air inlet (14); the second air inlet (14) communicates with the area between the sealing cap (13) and the filter element (3).

2. A handheld vacuum cleaner according to claim 1, characterized in that, The bottom of the tank (11) is also provided with an openable tipping cover (15).

3. A handheld vacuum cleaner according to claim 2, characterized in that, One side of the tipping cover (15) is hinged to the bottom of the tank (11), and the other side is provided with a U-shaped buckle (151) that engages with the bottom of the tank (11) for engaging with the groove (112) provided at the bottom of the tank (11).

4. A handheld vacuum cleaner according to claim 1, characterized in that, The air valve inside the air inlet (12) is a rotatable knob (16); the knob (16) has an airflow channel (161) corresponding to the air inlet (12); when the knob (16) is rotated to a set angle, the airflow channel (161) inside the knob (16) is connected to the air inlet (12); at other angles, the airflow channel inside the air inlet is blocked by the knob.

5. A handheld vacuum cleaner according to claim 1, characterized in that, The air inlet (12) is tangentially connected to the tank (11) at one end near the tank (11) or enters the tank (11) at a set angle.

6. A handheld vacuum cleaner according to claim 1, characterized in that, The filter element (3) includes a filter screen (31) and a connector (32); wherein the connector (32) is generally annular, and the inner ring of the connector (32) is provided with a downwardly extending tubular part (33) for detachably connecting the filter screen (31), and the outer ring of the connector (32) is used for detachably connecting with the upper end of the tank (11).

7. A handheld vacuum cleaner according to claim 5, characterized in that, The tubular part (33) is provided with two U-shaped slots (34) that are symmetrical to each other, and a protruding snap-fit ​​column (35) corresponding to the U-shaped slots (34) is provided on the outer side of the upper end of the filter screen (31).

8. A handheld vacuum cleaner according to claim 5, characterized in that, The outer ring of the connector (32) is also provided with an alignment block (36) extending outward away from its center, and an alignment groove (111) corresponding to the alignment block (36) is provided at the upper end of the tank (11).

9. A handheld vacuum cleaner according to claim 1, characterized in that, The valve (17) is rotatably connected to the end of the second air vent (14); the rotatable connection is located in the middle of the valve (17), the valve (17) is located on one side of its rotatable connection corresponding to the second air vent (14), and a spring (18) is provided on the other side of the valve (17) to help the valve (17) press against the second air vent (14).

10. A handheld vacuum cleaner according to claim 1, characterized in that, It also includes a battery pack (4) and a housing (5). The housing (5) is used to connect the dust collection tank (1) and the battery pack (4). The housing (5) is also provided with a handle (51) for easy gripping and a control switch (52) for the pneumatic component (2). The battery pack (4) is electrically connected to the pneumatic component (2), and the pneumatic component (2) is also connected to the control switch (52).

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