Handheld non-contact entrainment pulse dust collector

Abstract

The handheld non-contact type entrainment pulse dust collector comprises a dust containing chamber, an entrainment machine chamber, an entrainment draught fan and a control handle, a filter screen is arranged in the dust containing chamber in an embedded mode, a dust collecting cover is detachably arranged on the front portion of the dust containing chamber, and a dust blocking cover plate capable of being adjusted to be opened and closed is arranged at the position, at an air inlet, in the dust containing chamber; a flexible ring body is arranged at the front end of the dust collection cover, entrainment static pressure chambers are symmetrically arranged outside the dust collection cover, side air inlets are formed in the entrainment static pressure chambers, communicated side air outlets are formed in the positions, corresponding to the entrainment static pressure chambers, of the inner wall of the dust collection cover, the side air outlets face the inner wall of the dust collection cover, and the air outlet directions of the side air outlets are opposite; an entrainment machine chamber opening is formed in the tail portion of the entrainment machine chamber, entrainment air conveying openings are formed in the two sides of the entrainment machine chamber, and the entrainment air conveying openings are communicated with the side air inlets through hoses. The invention aims to provide the non-traditional contact type handheld dust remover which can suck dust in a large particle size range, can avoid reentrainment of dust while ensuring that dust particles are effectively captured.

Description

Technical Field

[0001] The invention relates to the technical field of dust collectors, and in particular to a handheld non-contact suction pulse dust collector. Background Art

[0002] At present, handheld vacuum cleaners are widely used in various daily cleaning scenarios due to their lightness and flexibility. However, most handheld vacuum cleaners still rely on contact vacuuming, which requires contact with the surface to be cleaned to achieve effective dust removal. For surfaces that are prohibited from direct contact, such as surfaces of easily corrosive materials, mirrors, electronic screens or high-precision coating surfaces, this cleaning method may cause irreversible damage. Although there are some non-contact handheld vacuum cleaner designs that try to blow away the dust on the surface through airflow, the cleaning effect of such equipment is still not ideal. Common continuous airflow designs often cannot effectively capture accumulated dust, especially when facing a wide distribution of dust particle sizes. For example, for large-size dust, due to its large weight, it is difficult for the airflow to entrain it to be captured by the dust collection component; for small-size dust, its movement trajectory is greatly affected by the airflow, which is easy to cause secondary dust. At the same time, such equipment usually relies on close-to-dust suction, and the dust collection position needs to be manually changed during operation to achieve the corresponding suction force. It is difficult to adapt to the cleaning needs of surfaces with different material structures and different particle size distributions, and the cleaning efficiency is relatively low. Therefore, there is an urgent need for a non-traditional contact handheld dust collector that can capture a wide range of particle sizes and avoid secondary dust while ensuring effective capture of dust particles. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art and to provide a non-traditional contact-type handheld dust collector that can capture a wide range of particle sizes and avoid secondary dusting while ensuring effective capture of dust particles.

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

[0005] A handheld non-contact entrainment pulse dust collector comprises a dust chamber, an entrainment machine chamber, an entrainment fan and a control handle. The dust chamber is detachably arranged at the front of the entrainment machine chamber, a filter screen is nested in the dust chamber, a dust collecting hood is detachably arranged at the front of the dust chamber, and an adjustable dust shielding cover is arranged at the air inlet of the dust chamber; the inner wall of the dust collecting hood is arc-shaped, the front end of the dust collecting hood has a flexible ring body, and the outside of the dust collecting hood is symmetrically provided with entrainment A suction static pressure chamber, a side air inlet is arranged on the scroll suction static pressure chamber, and the inner wall of the dust collecting hood is respectively provided with communicating side air outlets corresponding to each scroll suction static pressure chamber, and each side air outlet faces the inner wall of the dust collecting hood and has opposite air outlet directions; a scroll suction machine chamber opening is arranged at the tail of the scroll suction machine chamber, and a rotating baffle capable of blocking the scroll suction machine chamber opening is rotatably arranged on the outer wall of the scroll suction machine chamber, and scroll suction air outlets are arranged on both sides of the scroll suction machine chamber, and the scroll suction air outlet and the side air inlet are connected by a hose.

[0006] Furthermore, a pulse machine room is arranged on the top of the dust containing chamber, a pulse fan is arranged in the pulse machine room, a pulse machine room opening is arranged at the tail of the pulse machine room, a pulse air supply port is arranged at the front of the pulse machine room, pulse static pressure chambers are symmetrically arranged on the outside of the dust collecting hood, and pulse air outlet pipes communicating with each other are arranged on the inner wall of the dust collecting hood corresponding to each pulse static pressure chamber, and the air outlet direction of each pulse air outlet pipe is toward the opening of the dust collecting hood.

[0007] Furthermore, the control handle is provided with a reel switch and a pulse switch, respectively, and wiring paths are provided between the reel machine room, the pulse machine room and the control handle.

[0008] Furthermore, there are four pulse air outlet pipes in total and they are distributed symmetrically around the center.

[0009] Furthermore, the air inlet of the dust chamber has a constriction, one side of the dust shielding cover is rotatably arranged on the arc-shaped protrusion between the constriction and the inner wall of the dust chamber, and the other side is overlapped at the constriction and abutted against the arc-shaped protrusion.

[0010] Furthermore, the arc-shaped area of ​​the dust collecting hood and the connecting area connected to the dust containing chamber are transitioned through a smooth chamfer of 15-25 mm.

[0011] Furthermore, the side air outlet is a rectangular air duct vertically connected to the inner wall of the dust collecting hood, and the length-to-width ratio of the rectangular air duct is 2.5:1.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The present invention is a non-contact vacuum cleaner, which can be used for dust cleaning work on surfaces to be cleaned that cannot be touched, are not suitable for touching or are difficult to touch. It can not only effectively clean dust, but also protect the surface of objects from being scratched. The vacuuming mode is divided into a pulse mode and a roll suction mode, which can simultaneously complete the blowing and suction capture of dust. Compared with other non-contact dust collectors, it can clean dust with a wider range of particle sizes, has high dust removal efficiency, and has a good dust capture effect, and can avoid secondary dust caused by the blowing airflow to the greatest extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the front structure of the present invention;

[0015] Figure 2 It is a schematic diagram of the rear structure of the present invention;

[0016] Figure 3 is a cross-sectional view of the present invention;

[0017] Figure 4 It is a structural schematic diagram of the filter plate in the present invention;

[0018] Figure 5 This is a rendering of the entrainment mode of the present invention;

[0019] Figure 6 This is a pulse mode effect diagram of the present invention.

[0020] Reference numerals:

[0021] 1-dust hood, 2-dust containing chamber, 3-pulse fan, 4-suction machine chamber, 5-filter, 6-suction fan, 7-pulse machine chamber, 8-control handle, 9-dust shielding cover, 10-wiring passage, 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 DESCRIPTION

[0022] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0023] like Figures 1 to 4As shown, a handheld non-contact suction pulse dust collector includes a dust chamber 2, a suction chamber 4, a suction fan 6 and a control handle 8. The dust chamber 2 is detachably arranged at the front of the suction chamber 4, and a filter 5 is nested in the dust chamber 2. A dust hood 1 is detachably arranged at the front of the dust chamber 2, and an adjustable dust shielding cover 9 is arranged at the air inlet of the dust chamber 2; the inner wall 1 of the dust hood is arc-shaped, the front end of the dust hood 1 has a flexible ring body, and the outside of the dust hood 1 is symmetrically provided with suction static pressure chambers 13 A side air inlet 15 is provided on the suction static pressure chamber 13, and the inner wall of the dust collecting hood 1 is respectively provided with communicating side air outlets 11 corresponding to each suction static pressure chamber 13, and each side air outlet 11 faces the inner wall of the dust collecting hood 1 and has opposite air outlet directions; a suction machine chamber opening 41 is provided at the tail end of the suction machine chamber 4, and a rotating baffle 42 capable of blocking the suction machine chamber opening 41 is rotatably provided on the outer wall of the suction machine chamber 4, and suction air outlets 43 are provided on both sides of the suction machine chamber 4, and the suction air outlet 43 and the side air inlet 15 are connected through a hose.

[0024] Among them, a pulse machine room 7 is arranged on the top of the dust chamber 2, a pulse fan 3 is arranged in the pulse machine room 7, a pulse machine room opening 72 is arranged at the tail of the pulse machine room 7, a pulse air outlet 71 is arranged at the front of the pulse machine room 7, and pulse static pressure chambers 14 are symmetrically arranged on the outside of the dust hood 1. The inner wall of the dust hood 1 is respectively provided with interconnected pulse air outlet pipes 12 corresponding to each pulse static pressure chamber 14, and the air outlet direction of each pulse air outlet pipe 12 is opened toward the dust hood 1. The control handle 8 is respectively provided with a suction switch 81 and a pulse switch 82, and a wiring passage 10 is arranged between the suction machine room 4 and the pulse machine room 7 and the control handle 8. There are four pulse air outlet pipes 12 in total and they are distributed symmetrically with the center.

[0025] The present invention has two dust collection modes, namely, suction and pulse. The connection lines of the pulse fan 3 and the suction fan 6 are connected to the control handle 8 through the wiring passage 10. When the suction mode is in effect, two hoses are used to connect the suction air outlets 43 on both sides of the suction chamber 4 to the side air inlets 15 of the two suction static pressure chambers 13, respectively. One suction air outlet 43 corresponds to one suction static pressure chamber 13 for air supply. The suction switch 81 on the control handle 8 is pressed to turn on the suction fan 6. The airflow generated by the suction fan 6 generates suction on the surface of the object corresponding to the dust hood 1. At the same time, due to the suction of the airflow, the dust shielding cover 9 is opened and rotated toward the inside of the dust chamber 2, so that dust can enter the dust chamber 2. This part of the airflow is filtered by the filter screen 5 and finally discharged from the suction chamber opening 41 at the rear. A part of the airflow filtered by the filter screen 5 is transported from the suction air outlet 43 to the suction static pressure chamber 14 through the hose, and finally discharged into the dust hood 1 through the side air outlet 11. Since the air outlets 11 on each side face the inner wall of the dust collecting cover 1 and the air outlet directions are opposite, 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 the two side air outlets 11 exhaust air at the same time, a clockwise rotating entrainment airflow will be formed at the annular portion at the front end of the dust hood 1 to capture particulate matter, thereby completing a large-area dust collection effect, and the sucked dust will be retained in the dust hood 1 due to the entrainment effect, avoiding the phenomenon of secondary dust. The size of the entrainment airflow can be adjusted by the opening and closing degree of the rotating baffle 42 to adjust the intensity of the entrainment airflow. When it is necessary to increase the entrainment airflow, the shielding area of ​​the rotating baffle 42 on the entrainment chamber opening 41 is increased, so that more airflow flows out through the entrainment air outlet 43. When it is necessary to reduce the entrainment airflow, the shielding area of ​​the rotating baffle 42 on the entrainment chamber opening 41 is reduced. When the rotating baffle 42 is fully opened and the hose between the entrainment air outlet 43 and the side air inlet 15 is removed, the entrainment mode is closed. It is worth noting that it should be avoided that the air duct resistance is too large due to adjusting the rotating baffle 42, thereby causing the flow of the suction fan 6 to be greatly attenuated, or even the working state point falls into the surge zone.

[0026] like Figure 6 As shown, when the pulse mode is in progress, two hoses are used to connect the pulse air outlet 71 on the front side of the pulse machine chamber 7 to the two pulse static pressure chambers 14 outside the dust hood 1, respectively. One pulse air outlet 71 corresponds to one pulse static pressure chamber 14 for air supply. Press the suction switch 81 and the pulse switch 82 on the control handle 8, turn on the suction fan 6 and the pulse fan 3, fully open the rotating baffle 42, and remove the hose between the suction air outlet 43 and the side air inlet 15. The suction fan 6 generates suction to suck in particles on the opening side of the dust hood 1. The airflow generated by the pulse fan 3 is first input into the pulse static pressure chamber 14, and then ejected from the four pulse air outlet pipes 12, which can provide a stronger direct blowing effect on a small area on the surface of the object, thereby blowing up large particles on the surface of the object and finally sucking them into the dust chamber.

[0027] When the entrainment mode works alone, it is generally used to clean dust particles with low adhesion to the surface to be cleaned and low self-gravity. When the pulse mode works alone, it is generally used to clean dust particles with high adhesion to the surface to be cleaned and high self-gravity.

[0028] When the entrainment mode and the pulse mode are used at the same time, the pulse mode can be used to blow up the dust and particles on the surface of the object, and the entrainment mode is used to keep the blown dust in the dust hood 1 through the entrainment effect to avoid secondary dusting. It can not only effectively clean the dust, but also protect the surface of the object from being scratched. Compared with other non-contact dust collectors, the particle size of the dust that can be cleaned is wider, the dust removal efficiency is high, and the dust collection effect is good.

[0029] The air inlet of the dust chamber 2 has a constriction, one side of the dust shielding cover 9 is rotated to be arranged on the arc-shaped protrusion between the constriction and the inner wall of the dust chamber 2, and the other side is overlapped at the constriction and abutted against the arc-shaped protrusion. When the suction fan 6 is working, the dust shielding cover 9 is affected by the suction force and rotates toward the inside of the dust chamber 2, opening the constriction to allow dust to enter. When the dust collector is not working, the dust shielding cover 9 overlaps at the constriction due to its own weight to close the dust chamber 2, preventing the sucked dust from spilling out.

[0030] The arc area of ​​the dust collecting hood 1 and the connection area connected to the dust containing chamber 2 are transitioned through a smooth chamfer of 15-25 mm, which can reduce airflow resistance.

[0031] The side air outlet 11 is a rectangular air duct vertically connected to the inner wall of the dust collecting hood 1, and the length-to-width ratio of the rectangular air duct is 2.5:1, which further improves the stability of the entrained airflow.

[0032] 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 principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A handheld non-contact entrainment pulse dust collector, comprising a dust chamber (2), an entrainment chamber (4), an entrainment fan (6) and a control handle (8), wherein the dust chamber (2) is detachably arranged in front of the entrainment chamber (4), and a filter screen (5) is nested in the dust chamber (2), characterized in that: The front part of the dust chamber (2) is detachably provided with a dust collecting hood (1), and an adjustable dust shielding cover (9) is provided at the air inlet of the dust chamber (2); the inner wall (1) of the dust collecting hood is arc-shaped, the front end of the dust collecting hood (1) has a flexible ring body, the outside of the dust collecting hood (1) is symmetrically provided with a suction static pressure chamber (13), the suction static pressure chamber (13) is provided with a side air inlet (15), and the inner wall of the dust collecting hood (1) is respectively provided with a suction static pressure chamber (13) There are interconnected side air outlets (11), each of which faces the inner wall of the dust collecting hood (1) and has opposite air outlet directions; a suction chamber opening (41) is provided at the rear of the suction chamber (4), a rotatable baffle (42) capable of blocking the suction chamber opening (41) is rotatably provided on the outer wall of the suction chamber (4), and suction air delivery ports (43) are provided on both sides of the suction chamber (4), and the suction air delivery ports (43) and the side air inlet (15) are connected through a hose.

2. A handheld non-contact suction pulse dust collector according to claim 1, characterized in that: A pulse machine chamber (7) is arranged on the top of the dust containing chamber (2), a pulse fan (3) is arranged in the pulse machine chamber (7), a pulse machine chamber opening (72) is arranged at the rear of the pulse machine chamber (7), and a pulse air outlet (71) is arranged at the front of the pulse machine chamber (7). Pulse static pressure chambers (14) are symmetrically arranged outside the dust collecting hood (1), and pulse air outlet pipes (12) are arranged on the inner wall of the dust collecting hood (1) corresponding to each pulse static pressure chamber (14), and the air outlet direction of each pulse air outlet pipe (12) is toward the opening of the dust collecting hood (1).

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

4. The handheld non-contact suction pulse dust collector according to claim 2 is characterized in that: A total of four pulse air outlet pipes (12) are provided and are centrally symmetrically distributed.

5. The handheld non-contact suction pulse dust collector according to claim 1 is characterized in that: The dust chamber (2) has a constriction at the air inlet, one side of the dust shielding cover plate (9) is rotatably arranged on an arc-shaped protrusion between the constriction and the inner wall of the dust chamber (2), and the other side is overlapped at the constriction and abuts against the arc-shaped protrusion.

6. The handheld non-contact suction pulse dust collector according to claim 1 is characterized in that: The arc-shaped area of ​​the dust collecting hood (1) and the connection area connected to the dust containing chamber (2) are transitioned through a smooth chamfer of 15-25 mm.

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

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