A hand-held non-contacting entrainment pulse duster

Abstract

This invention discloses a handheld, non-contact pulse jet dust collector, comprising a dust collection chamber, a suction machine chamber, a suction fan, and a control handle. A filter screen is nested within the dust collection chamber. A dust collection hood is detachably mounted on the front of the dust collection chamber, and an adjustable dust baffle is installed at the air inlet within the dust collection chamber. The front end of the dust collection hood has a flexible ring, and suction static pressure chambers are symmetrically arranged on the outside of the dust collection hood. Side air inlets are provided on the suction static pressure chambers, and corresponding side air outlets are provided on the inner wall of the dust collection hood, all facing the inner wall of the dust collection hood and with opposite airflow directions. The suction machine chamber has an opening at its rear, and suction air outlets are provided on both sides of the suction machine chamber. The suction air outlets and the side air inlets are connected by flexible hoses. This invention aims to provide a non-traditional contact handheld dust collector capable of suctioning a wide range of particle sizes, ensuring effective dust particle capture while avoiding secondary dust generation.

Description

Technical Field

[0001] This invention relates to the field of dust collector technology, and more particularly to a handheld, non-contact, suction pulse dust collector. Background Technology

[0002] Currently, handheld vacuum cleaners are widely used in various daily cleaning scenarios due to their portability and flexibility. However, most handheld vacuum cleaners still rely on contact cleaning, requiring direct contact with the surface to be cleaned for effective dust removal. For surfaces where direct contact is prohibited, such as corrosive materials, mirrors, electronic screens, or high-precision coatings, this cleaning method may cause irreversible damage. Although some non-contact handheld vacuum cleaner designs attempt to use airflow to blow away dust, the cleaning effect of these devices is still not ideal. Common continuous airflow designs often fail to effectively capture accumulated dust, especially when dealing with dust particles of varying sizes. For example, large dust particles are too heavy for the airflow to capture; small dust particles are greatly affected by airflow, easily causing secondary dust re-entrainment. Furthermore, these devices typically rely on close-to-the-spot suction, requiring manual adjustment of the suction position to achieve the appropriate suction power, making it difficult to adapt to different surface materials and particle size distributions, resulting in relatively low cleaning efficiency. Therefore, there is an urgent need for a non-traditional, handheld dust collector that can capture a wide range of particulate matter sizes, effectively collect dust particles, and avoid secondary dust generation. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and to provide a non-traditional contact handheld dust collector that can capture a wide range of particulate matter sizes, effectively captures dust particles while avoiding secondary dust generation.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0005] A handheld, non-contact pulse jet dust collector includes a dust collection chamber, a suction machine chamber, a suction fan, and a control handle. The dust collection chamber is detachably located at the front of the suction machine chamber, and a filter screen is nested inside the dust collection chamber. A dust collection hood is detachably installed at the front of the dust collection chamber. An adjustable dust baffle is installed at the air inlet of the dust collection chamber. A pulse jet chamber is located at the top of the dust collection chamber, and a pulse fan is installed inside the pulse jet chamber. An opening for the pulse jet chamber is located at the rear of the pulse jet chamber, and a pulse air outlet is located at the front of the pulse jet chamber. Pulse static pressure chambers are symmetrically arranged outside the dust collection hood, and the inner wall of the dust collection hood is provided with interconnected pulse jets corresponding to each pulse static pressure chamber. The air outlet ducts and pulse air outlet ducts all face the opening of the dust collection hood. The inner wall of the dust collection hood is arc-shaped, and the front end of the dust collection hood has a flexible ring. The outer side of the dust collection hood is symmetrically arranged with suction static pressure chambers. The suction static pressure chambers are provided with side air inlets. The inner wall of the dust collection hood is provided with side air outlets corresponding to each suction static pressure chamber. Each side air outlet faces the inner wall of the dust collection hood and the air outlets are opposite in direction. The tail end of the suction machine chamber is provided with a suction machine chamber opening. The outer wall of the suction machine chamber is rotatably provided with a rotating baffle that can block the suction machine chamber opening. Suction air inlets are provided on both sides of the suction machine chamber. The suction air inlets and the side air inlets are connected by flexible hoses.

[0006] Furthermore, the control handle is equipped with a suction switch and a pulse switch, and wiring paths are provided between the suction machine chamber, the pulse machine chamber, and the control handle.

[0007] Furthermore, there are four pulse air outlet pipes, which are centrally symmetrically distributed.

[0008] Furthermore, the air inlet of the dust chamber has a constriction, and one side of the dust baffle is rotatably disposed between the constriction and the inner wall of the dust chamber, while the other side overlaps the constriction and abuts against the arc-shaped protrusion.

[0009] Furthermore, the arc-shaped area of ​​the dust collection hood and the connecting area connected to the dust chamber are transitioned by a smooth chamfer of 15-25mm.

[0010] Furthermore, the side air outlet is a rectangular air duct vertically connected to the inner wall of the dust collection hood, and the length-to-width ratio of the rectangular air duct is 2.5:1.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] This invention is a non-contact vacuum cleaner, suitable for cleaning dust from surfaces that are inaccessible, unsuitable for contact, or difficult to reach. It effectively cleans dust while protecting surfaces from scratches. The vacuuming modes include pulse and suction, simultaneously blowing and collecting dust. Compared to other non-contact dust collectors, it can clean a wider range of dust particle sizes, offering high dust removal efficiency and excellent dust collection, while minimizing secondary dust generation caused by the blowing airflow. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the front structure of the present invention;

[0014] Figure 2 This is a schematic diagram of the rear structure of the present invention;

[0015] Figure 3 This is a cross-sectional view of the present invention;

[0016] Figure 4 This is a schematic diagram of the filter plate in this invention;

[0017] Figure 5 This is a diagram illustrating the effect of the suction mode of the present invention;

[0018] Figure 6 This is a diagram illustrating the effect of the pulse mode of the present invention.

[0019] Figure label:

[0020] 1-Dust collection hood, 2-Dust chamber, 3-Pulse fan, 4-Suction machine chamber, 5-Filter screen, 6-Suction fan, 7-Pulse machine chamber, 8-Control handle, 9-Dust baffle plate, 10-Wiring path, 11-Side air outlet, 12-Pulse air outlet pipe, 13-Suction static pressure chamber, 14-Pulse static pressure chamber, 15-Side air inlet, 16-Pulse air inlet, 41-Suction machine chamber opening, 42-Rotating baffle, 43-Suction air outlet, 71-Pulse air outlet, 72-Pulse machine chamber opening, 81-Suction switch, 82-Pulse switch. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] like Figures 1 to 4As shown, a handheld non-contact pulse dust collector includes a dust collection chamber 2, a suction machine chamber 4, a suction fan 6, and a control handle 8. The dust collection chamber 2 is detachably located at the front of the suction machine chamber 4. A filter screen 5 is nested inside the dust collection chamber 2. A dust collection hood 1 is detachably installed at the front of the dust collection chamber 2. An adjustable dust baffle 9 is installed at the air inlet inside the dust collection chamber 2. The inner wall 1 of the dust collection hood is arc-shaped, and the front end of the dust collection hood 1 has a flexible ring. A suction static pressure chamber 13 is symmetrically arranged on the outside of the dust collection hood 1. The suction static pressure chamber 13 is provided with a side air inlet 15. The inner wall of the dust collection hood 1 is provided with a side air outlet 11 corresponding to each suction static pressure chamber 13. Each side air outlet 11 faces the inner wall of the dust collection hood 1 and the air outlet direction is opposite. The suction machine chamber 4 is provided with a suction machine chamber opening 41 at the tail end. The outer wall of the suction machine chamber 4 is rotatably provided with a rotating baffle 42 that can block the suction machine chamber opening 41. Suction air outlets 43 are provided on both sides of the suction machine chamber 4. The suction air outlets 43 and the side air inlets 15 are connected by a flexible hose.

[0023] The dust collection chamber 2 has a pulse jet chamber 7 at its top, a pulse fan 3 inside the pulse jet chamber 7, a pulse jet chamber opening 72 at its rear, and a pulse air outlet 71 at its front. The dust collection hood 1 has symmetrically arranged pulse static pressure chambers 14 on its exterior. Corresponding to each pulse static pressure chamber 14, each pulse air outlet duct 12 is installed on the inner wall of the dust collection hood 1, with the air outlet direction of each pulse air outlet duct 12 facing the opening of the dust collection hood 1. The control handle 8 is equipped with a suction switch 81 and a pulse switch 82. Wiring paths 10 are provided between the suction machine chamber 4, the pulse jet chamber 7, and the control handle 8. There are four pulse air outlet ducts 12 arranged symmetrically in a central configuration.

[0024] This invention features two suction modes: suction roll and pulse jet. The pulse jet fan 3 and suction roll fan 6 are connected to the control handle 8 via wiring passage 10. In suction roll mode, two flexible hoses connect the suction roll air outlets 43 on both sides of the suction roll chamber 4 to the side air inlets 15 of the two suction roll static pressure chambers 13, with each suction roll air outlet 43 corresponding to one suction roll static pressure chamber 13. Pressing the suction roll switch 81 on the control handle 8 turns on the suction roll fan 6. The airflow generated by the suction roll fan 6 creates suction on the surface of the item corresponding to the dust collection hood 1. Simultaneously, the suction force opens the dust baffle 9, causing it to rotate towards the interior of the dust collection chamber 2, allowing dust to enter the dust collection chamber 2. This portion of the airflow is filtered by the filter screen 5 and finally discharged from the suction roll chamber opening 41 at the rear. Part of the airflow filtered by the filter screen 5 is transported from the suction roll air outlet 43 through the flexible hose to the suction roll static pressure chamber 14, and finally discharged into the dust collection hood 1 through the side air outlet 11. Since the air outlets 11 on each side face the inner wall of the dust collection hood 1 and the air outlet directions are opposite, such as Figure 4 and Figure 5As shown, in this embodiment, the side air outlet 11 located on the upper side faces right, and the side air outlet 11 located on the lower side faces left. When both side air outlets 11 exhaust air simultaneously, they form a clockwise rotating suction airflow at the annular portion at the front end of the dust collection hood 1, capturing particulate matter and achieving a large-area dust collection effect. Moreover, the dust sucked up is retained inside the dust collection hood 1 due to the suction effect, avoiding secondary dust re-entrainment. The magnitude of the suction airflow can be adjusted by the opening and closing degree of the rotating baffle 42. When it is necessary to increase the suction airflow, the obstruction area of ​​the rotating baffle 42 on the suction chamber opening 41 is increased, allowing more airflow to flow out through the suction air outlet 43. When it is necessary to decrease the suction airflow, the obstruction area of ​​the rotating baffle 42 on the suction chamber opening 41 is decreased. When the rotating baffle 42 is fully opened and the hose between the suction air outlet 43 and the side air inlet 15 is removed, the suction mode is closed. It is worth noting that excessive airflow resistance caused by adjusting the rotating baffle 42 should be avoided, which could lead to a significant decrease in the flow rate of the suction fan 6, or even cause the operating point to fall into the surge zone.

[0025] like Figure 6 As shown, in pulse mode, two flexible hoses connect the pulse air outlet 71 at the front of the pulse machine chamber 7 to the two pulse static pressure chambers 14 outside the dust collection hood 1, with one pulse air outlet 71 corresponding to one pulse static pressure chamber 14. Press the suction switch 81 and pulse switch 82 on the control handle 8 to turn on the suction fan 6 and pulse fan 3, fully open the rotating baffle 42, and disconnect the flexible hose between the suction air outlet 43 and the side air inlet 15. The suction fan 6 generates suction to suck up particles from the opening side of the dust collection hood 1. The airflow generated by the pulse fan 3 is first input into the pulse static pressure chamber 14, and then sprayed out from the four pulse air outlet pipes 12, which can provide a stronger direct blowing effect on a small area of ​​the object's surface, thereby blowing up large particles on the object's surface and finally sucking them into the dust collection chamber.

[0026] When operating alone in suction mode, it is generally used to clean dust particles with low adhesion to the surface and low weight. When operating alone in pulse mode, it is generally used to clean dust particles with high adhesion to the surface and high weight.

[0027] When the suction and pulse modes are used simultaneously, the pulse mode blows up dust and particles from the surface of objects, while the suction mode traps the blown dust within the dust collection hood 1, preventing secondary dust re-entrainment. This effectively cleans dust while protecting the surface of objects from scratches. Compared to other non-contact dust collectors, it can clean a wider range of dust particle sizes, has high dust removal efficiency, and excellent dust collection performance.

[0028] The dust collection chamber 2 has a constricted opening at its air inlet. One side of the dust baffle 9 is rotatably positioned between the constricted opening and the inner wall of the dust collection chamber 2, while the other side overlaps the constricted opening and abuts against the arc-shaped protrusion. When the suction fan 6 is operating, the dust baffle 9 rotates towards the inside of the dust collection chamber 2 under the influence of suction, opening the constricted opening to allow dust to enter. When the dust collector is not operating, the dust baffle 9, due to its own weight, overlaps the constricted opening, sealing the dust collection chamber 2 and preventing the sucked-in dust from spilling out.

[0029] The arc-shaped area of ​​the dust collection hood 1 and the connecting area connected to the dust chamber 2 are transitioned by a smooth chamfer of 15-25mm, which can reduce airflow resistance.

[0030] The side air outlet 11 is a rectangular air duct vertically connected to the inner wall of the dust collection hood 1. The length-to-width ratio of the rectangular air duct is 2.5:1, which further improves the stability of the suction airflow.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A handheld, non-contact, pulse-jet dust collector, comprising a dust collection chamber (2), a suction chamber (4), a suction fan (6), and a control handle (8), wherein the dust collection chamber (2) is detachably disposed at the front of the suction chamber (4), and a filter screen (5) is nested inside the dust collection chamber (2), characterized in that: The dust collection chamber (2) is detachably equipped with a dust collection hood (1) at the front. An adjustable dust baffle (9) is installed at the air inlet inside the dust collection chamber (2). A pulse machine chamber (7) is installed at the top of the dust collection chamber (2). A pulse fan (3) is installed inside the pulse machine chamber (7). A pulse machine chamber opening (72) is installed at the rear of the pulse machine chamber (7). A pulse air outlet (71) is installed at the front of the pulse machine chamber (7). Pulse static pressure chambers (14) are symmetrically arranged outside the dust collection hood (1). A pulse air outlet pipe (12) is provided on the inner wall of the dust collection hood (1) corresponding to each pulse static pressure chamber (14). The air outlet direction of each pulse air outlet pipe (12) is towards the opening of the dust collection hood (1). The inner wall (1) of the dust collection hood is an arc. The dust collection hood (1) has a flexible ring at the front end. The dust collection hood (1) is symmetrically provided with suction static pressure chambers (13) on the outside. Side air inlets (15) are provided on the suction static pressure chambers (13). The inner wall of the dust collection hood (1) is provided with side air outlets (11) corresponding to each suction static pressure chamber (13). Each side air outlet (11) faces the inner wall of the dust collection hood (1) and the air outlets are opposite. The suction machine chamber (4) is provided with a suction machine chamber opening (41) at the rear end. The outer wall of the suction machine chamber (4) is rotatably provided with a rotating baffle (42) that can block the suction machine chamber opening (41). Suction air inlets (43) are provided on both sides of the suction machine chamber (4). The suction air inlets (43) and the side air inlets (15) are connected by a flexible hose.

2. The handheld non-contact pulse dust collector according to claim 1, characterized in that: The control handle (8) is equipped with a suction switch (81) and a pulse switch (82), and a wiring path (10) is provided between the suction machine chamber (4), the pulse machine chamber (7), and the control handle (8).

3. A handheld non-contact pulse dust collector according to claim 1, characterized in that: There are four pulse air outlet pipes (12) in total, and they are centrally symmetrically distributed.

4. A handheld non-contact pulse dust collector according to claim 1, characterized in that: The dust chamber (2) has a constricted opening at the air inlet. One side of the dust baffle (9) is rotatably set between the constricted opening and the inner wall of the dust chamber (2) in an arc-shaped protrusion, while the other side overlaps the constricted opening and abuts against the arc-shaped protrusion.

5. A handheld non-contact pulse dust collector according to claim 1, characterized in that: The arc-shaped area of ​​the dust collection hood (1) and the connecting area connected to the dust chamber (2) are transitioned by a smooth chamfer of 15-25mm.

6. A handheld non-contact pulse dust collector according to claim 1, characterized in that: The side air outlet (11) is a rectangular air duct that is vertically connected to the inner wall of the dust collection hood (1), and the length-to-width ratio of the rectangular air duct is 2.5:1.

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