Dust inlet mechanism of dust collection garbage can

Abstract

The dust inlet mechanism of the dust collection garbage can comprises a hollow dust barrel and a separation module arranged in the dust barrel, the bottom of the dust barrel is provided with a dust inlet pipe extending in the axial direction, the dust inlet pipe communicates with the separation module, and the dust inlet pipe is provided with a flow stopping piece for preventing dust from flowing back. The dust inlet pipe can axially communicate with the suction pipe, airflow can enter the dust collection garbage can without changing the direction, the pressure loss of the airflow entering the dust collection garbage can is reduced, the separation efficiency of dust in the dust collection garbage can is improved, and the dust can be effectively prevented from flowing back due to the fact that the flow stopping piece is arranged on the dust inlet pipe.

Description

Technical Field

[0001] The utility model relates to the field of household appliances, in particular to a dust inlet mechanism of a dust collection trash can. Background Art

[0002] A vacuum cleaner uses an electric motor to drive blades to rotate at high speed, creating negative air pressure within a sealed housing, sucking in dust for cleaning. The dustbin, a key component of a vacuum cleaner, separates and collects dust.

[0003] Currently, the vacuum cleaner trash cans on the market are generally connected to a dust inlet pipe set laterally, and the dust inlet pipe is connected to the outside world through a vertically set suction pipe. The airflow carrying dust is first sucked in through the suction pipe, and then changes direction at the dust inlet pipe before entering the vacuum cleaner trash can, resulting in more pressure loss points of the airflow entering the vacuum cleaner trash can, thereby reducing the dust separation efficiency. Summary of the Invention

[0004] In order to solve the above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a dust inlet mechanism for a dust collection trash can, so as to reduce the pressure loss of the incoming air flow before entering the dust collection trash can and prevent dust from flowing back.

[0005] In order to achieve the above-mentioned purpose, the utility model designs a dust intake mechanism for a dust collection trash can, which includes a hollow dust bin and a separation module arranged in the dust bin. An axially extending dust intake pipe is provided at the bottom of the dust bin, and the dust intake pipe is connected to the separation module. A flow stop piece is provided on the dust intake pipe to prevent dust backflow.

[0006] Furthermore, the flow stop member includes a mounting portion, a plurality of dust shields are arranged around the mounting portion, and gaps are formed between adjacent dust shields.

[0007] Furthermore, when the airflow enters the flow stopper along the length direction of the dust inlet pipe, the dust blocking pieces on the flow stopper are deformed under the impact of the airflow, thereby widening the gaps between adjacent dust blocking pieces.

[0008] Furthermore, the dust shield is protruding above the mounting portion, and a plurality of dust shields form a hemispherical shape.

[0009] Furthermore, the dust shield is fan-shaped, and the width of the dust shield gradually decreases from an end close to the mounting portion to an end away from the mounting portion.

[0010] Furthermore, the separation module includes an outer cylinder and a guide module arranged in the outer cylinder, the outer cylinder is provided with a dust removal port, the guide module includes a hollow inner cylinder and a guide plate spirally wrapped around the outer circumference of the inner cylinder, the outer cylinder is provided with a dust inlet connected to the inner cavity of the inner cylinder, the dust inlet is connected to the dust inlet pipe, and the side wall of the inner cavity of the inner cylinder is provided with a ventilation port connected to the outer wall of the inner cylinder. When the air flow enters the inner cavity of the inner cylinder from the dust inlet and passes through the ventilation port, it flows upward in a circumferential spiral along the guide plate and the outer circumferential wall of the inner cylinder in the inner cavity of the outer cylinder.

[0011] Furthermore, an opening is provided at the bottom of the inner cylinder, the opening cover is provided on the bottom wall of the inner cavity of the outer cylinder, the dust inlet longitudinally passes through the bottom of the outer cylinder, and the dust inlet is communicated with the opening.

[0012] Furthermore, the mounting portion is sleeved on the end of the dust inlet pipe, the outer cylinder is mounted on the mounting portion, and the dust shield extends into the dust inlet.

[0013] Furthermore, the flow stopper is made of elastic material, so that the outer cylinder, the mounting portion and the dust inlet pipe are sealed and connected.

[0014] Furthermore, the outer cylinder is directly mounted on the dust inlet pipe, and the mounting portion is fixed in the dust inlet pipe.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. The dust inlet pipe is axially arranged at the bottom of the dust bin, so that the dust inlet pipe can be directly connected axially with the suction pipe. The airflow sucked in through the suction pipe can enter the dust collection trash can without changing direction, thereby reducing the pressure loss of the airflow entering the dust collection trash can, thereby improving the dust separation efficiency in the dust collection trash can; 2. A flow stop is arranged on the dust inlet pipe, which can effectively prevent dust backflow.

[0016] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional view of a dust collection trash can in one embodiment of the present application.

[0018] Figure 2 This is a three-dimensional diagram of the assembly of the separation module and the dust bin in one embodiment of the present application.

[0019] Figure 3 yes Figure 2 An exploded view of .

[0020] Figure 4 yes Figure 2 Another exploded image.

[0021] Figure 5 yes Figure 2 Schematic diagram of the structure of the middle inner tube and guide plate.

[0022] Figure 6 yes Figure 2 Schematic diagram of the structure of the inner and outer cylinders.

[0023] Figure 7 yes Figure 3 Exploded view of the dust bin and flow stop.

[0024] Figure 8 It is a structural schematic diagram of a flow stop member in one embodiment of the present application. DETAILED DESCRIPTION

[0025] Exemplary embodiments are described in detail herein, with examples illustrated in the accompanying drawings. When the following description refers to the drawings, identical numerals in different figures represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of devices, systems, apparatus, and methods consistent with certain aspects of the present application.

[0026] like Figures 1 to 8 As shown, the present application provides a dust intake mechanism for a dust collection trash can, comprising a hollow dust bin 10 and a separation module 20 disposed in the dust bin 10 .

[0027] The upper end of the dust bin 10 is open, and a dust bin inner cavity 11 is provided in the dust bin 10. An axially extending dust inlet pipe 12 is provided at the bottom of the dust bin 10. The dust inlet pipe 12 is connected to the separation module 20, and a flow stopper 30 is provided on the dust inlet pipe 12 to prevent dust backflow.

[0028] The dust inlet pipe 12 axially penetrates the bottom of the dust bin 10 and extends into the dust bin inner cavity 11. It is used to axially connect to the suction pipe, so that the airflow sucked in by the suction pipe can directly enter the dust bin 10 through the dust inlet pipe 12 without airflow deflection, reducing the pressure loss before the airflow enters the dust bin 10, and facilitating the separation efficiency of dust in the dust collection trash can. The dust inlet pipe 12 can be set in the middle of the bottom of the dust bin 10, or it can be offset from the middle of the bottom of the dust bin 10. In this embodiment, the dust inlet pipe 12 is offset from the middle of the bottom of the dust bin 10.

[0029] The flow stopper 30 includes a mounting portion 31, a longitudinal through hole for airflow to pass through is provided in the middle of the mounting portion 31, a plurality of dust shields 32 are distributed circumferentially around the outer periphery of the through hole on the upper end surface of the mounting portion 31, and gaps 33 are provided between adjacent dust shields 32. In this embodiment, please refer to Figure 1 、 8The dust stopper 32 is arranged in such a way that the width of the dust stopper 32 gradually decreases from one end close to the mounting portion 31 to the other end away from the mounting portion 31. In this way, after the airflow enters the flow stopper 30 along the length direction of the dust inlet pipe 12, that is, the airflow enters the through hole in the middle of the mounting portion 31 from the dust inlet pipe 12, and then flows along the axial direction of the through hole to the lower end surface of the dust stopper 32, the dust stopper 32 is deformed under the continuous impact of the airflow, thereby expanding the gap 33 between adjacent dust stoppers 32, thereby meeting the dust inlet effect. Since the airflow in the dust collection trash can flows unidirectionally, when the impact of the airflow is lost, the gap 33 between adjacent dust stoppers 32 is smaller, and the dust is blocked by the dust stopper 32 when it falls back, and cannot flow back into the dust inlet pipe 12, effectively preventing dust from flowing back. Of course, the arrangement of the dust shield 32 is not limited to the above one. For example, the dust shield 32 is located in the same plane and is arranged in a ring in the mounting portion 31. The shape of the dust shield 32 is also not limited to the above one. It can be other regular or irregular shapes.

[0030] The separation module 20 includes an outer cylinder 21 and a flow guide module arranged in the outer cylinder 21. The upper end of the outer cylinder 21 is open, and the flow guide module includes a hollow inner cylinder 22 and a flow guide plate 23 spirally wrapped around the outer periphery of the inner cylinder 22. The outer cylinder 21 is provided with a dust inlet 211 connected to the inner cylinder cavity 221. The dust inlet 211 is connected to the dust inlet pipe 12. The top of the inner cylinder cavity 221 is closed, and a vent 222 is provided on the side of the inner cylinder 22. The inner cylinder cavity 221 is connected to the dust inlet pipe 12. The vent 222 is connected to the inner cavity 212 of the outer cylinder. The upper end of the guide plate 23 is provided with a guide surface 231 circumferentially arranged around the outer wall of the inner cylinder 22. One end of the guide surface 231 is connected to the vent 222, and one end of the guide surface 231 spirally rises toward the other end. A dust removal port 213 is provided on the outer cylinder 21. The dust removal port 213 is arranged in the tangential direction of the guide surface 231. The dust removal port 213 connects the inner cavity 212 of the outer cylinder with the inner cavity 11 of the dust bin.

[0031] When the air flow enters the inner cavity 221 of the inner cylinder from the dust inlet 211 and passes through the ventilation port 222, it flows upward in a circumferential spiral along the guide surface 231 on the guide plate 23 and the outer peripheral wall of the inner cylinder 22 in the inner cavity 212 of the outer cylinder and separates. The dust carried in the air flow is separated and thrown out from the dust removal port 213.

[0032] Among them, the dust removal port 213 can be one or more. When there are multiple dust removal ports 213, the dust removal ports 213 are arranged in a ring on the peripheral wall of the outer tube 21. In this embodiment, there is one dust removal port 213, and the dust removal port 213 is formed by being recessed downward from the upper end of the outer tube 21.

[0033] In this embodiment, an opening 223 is provided at the bottom of the inner cylinder 22, and the opening 223 is covered on the bottom wall of the inner cavity of the outer cylinder 21. The dust inlet 211 vertically penetrates the bottom of the outer cylinder 21, and the dust inlet 211 is axially connected to the opening 223. When the dust inlet 211 is located in the middle of the bottom of the outer cylinder 21, the outer cylinder 21, the inner cylinder 22, the dust inlet 211 and the dust inlet pipe 12 can all be coaxially arranged. When the dust inlet 211 is not located in the middle of the bottom of the outer cylinder 21, the dust inlet 211 and the dust inlet pipe 12 are coaxially arranged, and the outer cylinder 21 and the inner cylinder 22 can also be coaxially arranged. Of course, the opening 223 can also be provided on the side wall of the inner cylinder 22. In this case, the dust inlet 211 is also provided on the side wall of the outer cylinder 21, and the upper end of the dust inlet pipe 12 is connected to the dust inlet 211 through a transversely arranged pipe.

[0034] The outer cylinder 21 can be directly mounted on the dust inlet pipe 12. At this time, the mounting portion 31 can be fixed inside the dust inlet pipe 12, and the dust shield 32 can also be completely located in the dust inlet pipe 12. Of course, the dust shield 32 can also partially or completely extend into the dust inlet port 211. The outer cylinder 21 and the dust inlet pipe 12 can be fixed by ultrasonic welding. Of course, a sealing member can be provided between the outer cylinder 21 and the dust inlet pipe 12 to make the dust inlet pipe 12 and the dust inlet port 211 axially sealed and connected. In this embodiment, the mounting portion 31 is sleeved on the end of the dust inlet pipe 12, the outer cylinder 21 is mounted on the mounting portion 31, and the dust inlet pipe 12 is axially connected to the dust inlet port 211, that is, the end of the dust inlet pipe 12 extends into the through hole in the middle of the mounting portion 31, and the flow stop member 30 is made of elastic material, preferably silicone material. At this time, the mounting portion 31 not only supports the outer cylinder 21, but also makes the outer cylinder 21 and the dust inlet pipe 12 sealed and connected, and the dust shield 32 passes through the dust inlet port 211 and extends into the inner cavity 221 of the inner cylinder.

[0035] In order to better deflect the airflow entering the inner tube cavity 221, a downwardly protruding guide protrusion is provided on the top of the inner tube cavity 221. Under the action of the guide protrusion, the airflow entering the inner tube cavity 221 can flow in a clockwise or counterclockwise direction, which is conducive to lateral outflow from the vent 222.

[0036] The airflow sucked in through the suction pipe enters the dust inlet pipe 12 axially, and enters the inner cylinder cavity 221 through the enlarged gap 33. The airflow flows in the inner cylinder cavity 221 in a clockwise or counterclockwise direction, and then flows out of the inner cylinder cavity 221 through the vent 222. The airflow then flows along the guide surface 231. The separated dust passes through the dust removal port 213 and is collected in the dust bin cavity 11. The separated airflow flows upward out of the outer cylinder cavity 212.

[0037] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A dust inlet mechanism for a dust collecting trash can, comprising a hollow dust bin and a separation module disposed in the dust bin, characterized in that: An axially extending dust inlet pipe is provided at the bottom of the dust barrel, the dust inlet pipe is communicated with the separation module, and a flow stopper is provided on the dust inlet pipe to prevent dust from flowing back.

2. The dust inlet mechanism of the dust collection trash can according to claim 1, characterized in that: The flow stop member comprises a mounting portion, a plurality of dust blocking pieces are arranged around the mounting portion, and gaps are formed between adjacent dust blocking pieces.

3. The dust inlet mechanism of the dust collection trash can according to claim 2, characterized in that: When the airflow enters the flow stopper along the length direction of the dust inlet pipe, the dust blocking pieces on the flow stopper are deformed under the impact of the airflow, so that the gaps between adjacent dust blocking pieces are enlarged.

4. The dust inlet mechanism of the dust collection trash can according to claim 2, characterized in that: The dust shield is convexly arranged above the mounting portion, and a plurality of the dust shields form a hemispherical shape.

5. The dust inlet mechanism of the dust collection trash can according to claim 4, characterized in that: The dust shield is fan-shaped, and the width of the dust shield gradually decreases from an end close to the mounting portion to an end away from the mounting portion.

6. The dust inlet mechanism of the dust collecting trash can according to claim 2, characterized in that: The separation module includes an outer cylinder and a guide module arranged in the outer cylinder, the outer cylinder is provided with a dust removal port, the guide module includes a hollow inner cylinder and a guide plate spirally wrapped around the outer circumference of the inner cylinder, the outer cylinder is provided with a dust inlet connected to the inner cavity of the inner cylinder, the dust inlet is connected to the dust inlet pipe, and the side wall of the inner cavity of the inner cylinder is provided with a ventilation port connected to the outer wall of the inner cylinder. When the air flow enters the inner cavity of the inner cylinder from the dust inlet and passes through the ventilation port, it flows upward in a circumferential spiral along the guide plate and the outer circumferential wall of the inner cylinder in the inner cavity of the outer cylinder.

7. The dust inlet mechanism of the dust collection trash can according to claim 6, characterized in that: An opening is provided at the bottom of the inner cylinder, the opening cover is provided on the bottom wall of the inner cavity of the outer cylinder, the dust inlet longitudinally penetrates the bottom of the outer cylinder, and the dust inlet is communicated with the opening.

8. The dust inlet mechanism of the dust collection trash can according to claim 6, characterized in that: The mounting portion is sleeved on the end portion of the dust inlet pipe, the outer cylinder is mounted on the mounting portion, and the dust shield extends into the dust inlet.

9. The dust inlet mechanism of the dust collection trash can according to claim 8, characterized in that: The flow-stopping member is made of elastic material.

10. The dust inlet mechanism of the dust collection trash can according to claim 6, characterized in that: The outer cylinder is directly mounted on the dust inlet pipe, and the mounting portion is fixed in the dust inlet pipe.

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