Structure for reducing air outlet noise of dust collector

Abstract

The utility model discloses a structure for reducing air outlet noise of a dust collector. The structure is characterized in that the section of the outer side surface of an inner fan cover is U-shaped; the inner fan cover is clamped with the tail plate; the cover cylinder surrounds the outer side face of the inner fan cover. The outer air outlet plate is arranged on the outer side of the cover cylinder; a plurality of first air outlets are formed in the inner fan cover, a plurality of first air outlets form a group and are divided into a plurality of groups, and the plurality of groups of first air outlets are uniformly distributed in the inner fan cover by taking the group as a unit; a plurality of air guide ducts are arranged on the outer side face of the inner fan cover, the air guide ducts are consistent with the axial direction of the inner fan cover, the air guide ducts are fixedly connected with the inner fan cover, and the ends, connected with the inner fan cover, of the adjacent air guide ducts are in exchange connection; a plurality of second air outlets are formed in the cover cylinder and correspond to the tail air guide ducts one to one; a plurality of third air outlets are evenly distributed in the outer air outlet plate. The main air outlet is formed in the tail plate, and the main air outlet and the inner fan cover are coaxial. The fan has the advantages that wind resistance is increased, kinetic energy of wind is reduced, and noise is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of vacuum cleaner components, and in particular to a structure for reducing the exhaust noise of a vacuum cleaner. Background Technology

[0002] The existing passive noise reduction technology for vacuum cleaners is not ideal, and the filtered sound is quite harsh. Utility Model Content

[0003] This invention aims to overcome the shortcomings of existing technologies, which produce harsh noise, by providing a structure that increases wind resistance, reduces wind kinetic energy, and decreases noise, thereby reducing the noise output of a vacuum cleaner.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A structure for reducing the exhaust noise of a vacuum cleaner includes:

[0006] An inner hood is placed inside the noise reduction structure. The two ends of the inner hood are connected, and the cross-sectional shape of the outer side of the inner hood is U-shaped.

[0007] The tail plate is placed on one end face of the inner hood, the central axis of the tail plate is perpendicular to the central axis of the inner hood, and the inner hood is snapped into the tail plate;

[0008] A cover sleeve surrounds the outer surface of the inner hood, and the inner side of the cover sleeve contacts the U-shaped ends of the inner hood. The cover sleeve is snapped into the tail plate.

[0009] An outgoing air vent is placed on the outside of the hood, and the outgoing air vent is placed on the same side of the tail plate where the inner air hood is placed;

[0010] Several air outlets are placed on the inner hood. The air outlets are grouped into several groups. A group of air outlets is concentrated in a part of the inner hood and is evenly distributed in that part. Several groups of air outlets are evenly distributed on the inner hood in groups.

[0011] Several air guides are placed on the outer side of the inner air hood. The air guides are aligned with the axis of the inner air hood and are fixedly connected to the outer side of the inner air hood. The height of the air guides is lower than the highest point of the U-shape of the inner air hood. One end of the air guide is fixedly connected to one side of the U-shape of the inner air hood. The ends of adjacent air guides connected to the inner air hood are interchanged. The air guide closer to the first air outlet is the first air guide, and the air guide farther away from the first air outlet is the last air guide.

[0012] Several air outlets are placed on the cover, and each air outlet corresponds to a tail air duct. The position of the outgoing air plate corresponds to the position of the air outlet.

[0013] Several air outlets are evenly distributed on the outward air panel;

[0014] The main air outlet is located on the tail plate and is coaxial with the inner air hood.

[0015] The inner fan hood, hood cylinder, and tail plate are all located inside the vacuum cleaner. The tail plate is located at the rear, and the inner fan hood is immediately connected to the air outlet component. The outer fan plate is on the outer shell of the vacuum cleaner. When the air drawn in by the vacuum cleaner goes out through the inner fan hood, in addition to going out to the main air outlet, the air is dispersed to air outlet one. The air going out of air outlet one will go to air outlet two along the air guide channel, and finally exit from air outlet three. Passing through layers of obstruction, this process greatly reduces the wind force, thereby increasing wind resistance, reducing the kinetic energy of the wind, and reducing noise.

[0016] Preferably, the inner hood is provided with several partitions, which are fixedly connected to the outer surface of the inner hood. A set of air outlets is divided into two halves by a partition, and the two ends of the partition are fixedly connected to the first air guide ducts on both sides of the air outlet. The partitions can disperse the direction of the air coming out of the air outlet and disperse the wind force.

[0017] Preferably, the end air duct is provided with several air guides, which divide the air duct into two sections, and each air guide corresponds to an air outlet. The air guides can accurately guide the air to the air outlet.

[0018] Preferably, the air outlet end of the air guide duct is arc-shaped, and the arc-shaped opening faces the same direction as the airflow. This facilitates airflow guidance and also serves as an indicator.

[0019] Preferably, the plurality of air outlets are elongated. The elongated shape can both block debris and increase the air volume.

[0020] Preferably, the opening width of the air guide corresponds to the opening width of the second air outlet. This ensures the air volume output.

[0021] The beneficial effects of this utility model are: increasing wind resistance, reducing wind kinetic energy, and reducing noise; the partition strip can disperse the direction of the air coming out of the first air outlet and disperse the wind force; the air guide can accurately guide the air to the second air outlet; it is convenient to guide the direction of the air and also has an identification function; the long strip shape can block debris and increase the air volume; thus, the air volume can be guaranteed. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of this utility model without the cover sleeve;

[0024] Figure 3 This is a structural diagram of the present invention with the addition of an external ventilation panel.

[0025] In the diagram: 1. Inner hood, 2. Tail plate, 3. Cover tube, 4. Through hole, 5. Air outlet one, 6. Air guide duct, 7. Air outlet two, 8. Air outlet three, 9. Spacer bar, 10. Air guide, 11. Main air outlet. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] like Figures 1 to 3 In one embodiment, a structure for reducing the exhaust noise of a vacuum cleaner includes: an inner hood 1 with both ends connected and facing the machine's air outlet, the outer side of the inner hood 1 having a U-shaped cross-section; a tail plate 2 placed on one end face of the inner hood 1, the central axis of the tail plate 2 being perpendicular to the central axis of the inner hood 1, the inner hood 1 and the tail plate 2 being snapped together; a sleeve 3 surrounding the outer side of the inner hood 1, the inner side of the sleeve 3 contacting the U-shaped ends of the inner hood 1, the sleeve 3 being snapped together with the tail plate 2, the tail plate 2 being connected to the vacuum cleaner's outer shell; an outer air flap 4 placed on the outside of the sleeve 3 and connected to the vacuum cleaner's outer shell, the outer air flap 4 being placed on the same side of the tail plate 2 where the inner hood 1 is placed; and several air outlets 5 placed on the inner hood 1, the air outlets 5 being grouped into several groups, one group of air outlets 5 being concentrated in a portion of the inner hood 1 and evenly distributed in that portion, and several groups of air outlets 5 being... 5 are evenly distributed on the inner hood 1 in groups; several air guides 6 are placed on the outer side of the inner hood 1, the air guides 6 are aligned with the axis of the inner hood 1, the air guides 6 are fixedly connected to the outer side of the inner hood 1, the height of the air guides 6 is lower than the highest point of the U-shape of the inner hood 1, one end of the air guide 6 is fixedly connected to one side of the U-shape of the inner hood 1, and the ends of adjacent air guides 6 connected to the inner hood 1 are interchanged, with the air guide 6 near the air outlet 5 being the first air guide 6, and the air guide 6 far from the air outlet 5 being the last air guide 6; several air outlets 2 7 are placed on the hood cylinder 3, with each air outlet 2 7 corresponding to a last air guide 6, and the position of the outer air plate 4 corresponding to the position of the air outlets 2 7; several air outlets 3 8 are evenly distributed on the outer air plate 4; the main air outlet 11 is placed on the tail plate 2, and the main air outlet 11 is coaxial with the inner hood 1.

[0028] like Figure 2 As shown, the inner hood 1 is provided with several partitions 9. The partitions 9 are fixedly connected to the outer side of the inner hood 1. A group of air outlets 5 are divided into two halves by a partition 9. The two ends of the partition 9 are fixedly connected to the first air guide ducts 6 on both sides of the air outlets 5.

[0029] like Figure 2 As shown, the end air duct 6 is provided with several air guides 10, which divide the air duct 6 into two sections. The air guides 10 correspond one-to-one with the air outlets 7.

[0030] like Figure 2 As shown, the air outlet of the air guide 6 is arc-shaped, and the direction of the arc-shaped opening is consistent with the direction of the airflow.

[0031] like Figure 3 As shown, the shape of several air outlets is long and narrow.

[0032] like Figure 1 and Figure 2 As shown, the opening width of the air guide 10 corresponds to the opening width of the air outlet 7.

[0033] The structure of the vacuum cleaner is existing technology and will not be described in detail here. The inner fan hood 1, the hood cylinder 3, and the tail plate 2 are all placed inside the vacuum cleaner. The tail plate 2 is located at the tail and connected to the outer shell of the vacuum cleaner. The inner fan hood 1 is immediately connected to the air outlet component, and the outer air outlet 4 is on the outer shell of the vacuum cleaner. When the air sucked in by the vacuum cleaner goes out through the inner fan hood 1, in addition to going out to the main air outlet 11, the air is dispersed to the first air outlet 5. Then the air going out of the first air outlet 5 is divided into two parts by the partition strip 9 and then goes to the air outlet 10 through the air guide channels 6 on both sides, and then to the outside of the hood cylinder 3 through the second air outlet 7. Finally, it goes out through the third air outlet 8. Passing through layers of barriers, this process greatly reduces the wind force. At the main air outlet 11, there are also grille plates to reduce wind resistance but do not affect the air outlet. This achieves the purpose of increasing wind resistance, reducing the kinetic energy of the wind, and reducing noise.

Claims

1. A structure for reducing the exhaust noise of a vacuum cleaner, characterized in that, include: The inner wind hood (1) is placed inside the noise reduction structure. The two ends of the inner wind hood (1) are connected, and the cross-sectional shape of the outer side of the inner wind hood (1) is U-shaped. Tail plate (2) is placed on one end face of inner hood (1), the central axis of tail plate (2) is perpendicular to the central axis of inner hood (1), and inner hood (1) is snapped into tail plate (2); The cover (3) surrounds the outer side of the inner wind cover (1), and the inner side of the cover (3) contacts the U-shaped ends of the inner wind cover (1). The cover (3) is snapped into the tail plate (2). An outward air flap (4) is placed on the outside of the cover (3), and the outward air flap (4) is placed on the same side of the tail plate (2) where the inner air cover (1) is placed; Several air outlets (5) are placed on the inner hood (1). The air outlets (5) are grouped into several groups. A group of air outlets (5) is concentrated in a part of the inner hood (1) and is evenly distributed in a part of the position. Several groups of air outlets (5) are evenly distributed on the inner hood (1) in groups. Several air guides (6) are placed on the outer side of the inner hood (1). The air guides (6) are aligned with the axis of the inner hood (1). The air guides (6) are fixedly connected to the outer side of the inner hood (1). The height of the air guides (6) is lower than the highest point of the U-shape of the inner hood (1). One end of the air guide (6) is fixedly connected to one side of the U-shape of the inner hood (1). The ends of adjacent air guides (6) connected to the inner hood (1) are interchanged. The air guide (6) closer to the air outlet (5) is the first air guide (6), and the air guide (6) farther away from the air outlet (5) is the last air guide (6). Several air outlets (7) are placed on the cover (3). The air outlets (7) correspond one-to-one with the end air guide (6). The position of the outgoing air plate (4) corresponds to the position of the air outlets (7). Several air outlets (8) are evenly distributed on the outgoing air panel (4); The main air outlet (11) is placed on the tail plate (2), and the main air outlet (11) is coaxial with the inner air cover (1).

2. The structure for reducing the air outlet noise of a vacuum cleaner according to claim 1, wherein The inner hood (1) is provided with several partitions (9), the partitions (9) are fixedly connected to the outer side of the inner hood (1), and a set of air outlets (5) is divided into two halves by a partition (9). The two ends of the partitions (9) are fixedly connected to the first air guide channels (6) on both sides of the air outlets (5).

3. The structure for reducing the air outlet noise of a vacuum cleaner according to claim 1, characterized in that, The end air duct (6) is provided with several air ducts (10), which divide the air duct (6) into two sections. The air ducts (10) correspond one-to-one with the air outlet (7).

4. The structure for reducing the air outlet noise of a vacuum cleaner according to claim 3, characterized in that, The air outlet of the air guide duct (6) is arc-shaped, and the direction of the arc-shaped opening is consistent with the direction of the wind.

5. The structure for reducing the air outlet noise of a vacuum cleaner according to claim 1, characterized in that, The shape of the several air outlets three (8) is long and narrow.

6. The structure for reducing the air outlet noise of a vacuum cleaner according to claim 3, wherein The opening width of the air guide (10) corresponds to the opening width of the air outlet (7).

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