Dust collector

Abstract

The utility model provides a dust collector which comprises a dust collection container, at least one suction motor, a first filtering part, a shell, a valve element, a valve air duct and an air inlet channel, the shell is provided with a backflushing air inlet and a first ventilation opening, and when the valve element is located at a first angle position, the first ventilation opening is communicated with the valve air duct; when the valve element is located at the first angle position, the valve element isolates the recoil air inlet from the first ventilation opening. When the valve element is located at the first angle position, the valve air channel communicates between the air inlet channel and the first ventilation opening. When the valve element is located at the second angle position, the first ventilation opening is isolated from the valve air duct; when the valve element is located at the second angle position, air can sequentially flow through the backflushing air inlet, the first ventilation opening, the clean side of the first filtering part, the first filtering part and the non-clean side of the first filtering part under the action of the negative pressure of the non-clean side of the first filtering part relative to the backflushing air inlet; the design improves the blockage cleaning air path of the filtering device, and is simple and practical.

Description

Technical Field

[0001] This application relates to a vacuum cleaner, and more particularly to a design related to the switching of the airflow path of the vacuum cleaner. Background Technology

[0002] EP2982284A3 discloses a vacuum cleaner with a filtration device including two canister filters. To clear filter blockages, the vacuum cleaner is equipped with a butterfly valve mechanism for switching between the suction air path and the self-cleaning air path. By switching the butterfly valve mechanism, the airflow can be alternately backwashed to clean the two filters, causing dust and other blockages attached to the filters to be flushed off, thus solving the problem of filter blockage after long-term use. This design can provide another related design solution. Utility Model Content

[0003] One of the technical problems addressed by this patent application is to improve the design related to switching the clogging and cleaning air path of the filtration device.

[0004] This patent application provides a vacuum cleaner, including a dust collection container, at least one suction motor, a first filter section, a housing, a valve core installed in the housing, a valve duct, and an air inlet channel. The air inlet channel is used for fluid communication between the valve duct and the at least one suction motor. The housing is provided with a backflow inlet and a first vent corresponding to the first filter section. The valve core is at least partially located inside the housing and can rotate relative to the housing, so that the valve core can rotate to different angular positions relative to the housing. The valve core can rotate from a first angular position to a second angular position. When the valve core is in the first angular position, the first vent is connected to the valve duct. When the valve core is in the first angular position, the valve core isolates the backflow inlet from the first vent. When the valve core is in the first angle position, the valve duct is connected between the air inlet channel and the first vent. When the valve core is in the first angle position, under the suction of the at least one suction motor, air can flow sequentially through the non-clean side of the first filter, the first filter, the clean side of the first filter, the first vent, the valve duct, and the air inlet channel. When the valve core is in the second angle position, the first vent is isolated from the valve duct. When the valve core is in the second angle position, the backflow inlet is connected to the first vent. When the valve core is in the second angle position, under the negative pressure of the non-clean side of the first filter relative to the backflow inlet, air can flow sequentially through the backflow inlet, the first vent, the clean side of the first filter, the first filter, and the non-clean side of the first filter.

[0005] Based on this design, the housing is provided with a backflow inlet and a first vent. When the valve core is in the first angle position, the valve core isolates the backflow inlet from the first vent. When the valve core is in the second angle position, the first vent is isolated from the valve duct. When the valve core is in the second angle position, the backflow inlet is connected to the first vent. Based on the above design, this vacuum cleaner switches the duct to clean the blockage of the first filter section by rotating the valve core relative to the housing to the corresponding angle position. This design is simple, practical and effective, and suitable for widespread application.

[0006] Optionally, when the valve core is in the second angle position, a first backflow duct is formed between the valve core and the housing, connecting the backflow inlet and the first vent. When the valve core is in the second angle position, under the negative pressure of the non-clean side of the first filter relative to the backflow inlet, air can flow sequentially through the backflow inlet, the first backflow duct, the first vent, the clean side of the first filter, the first filter, and the non-clean side of the first filter.

[0007] Optionally, it also includes a second filter section, and the housing is also provided with a second vent corresponding to the second filter section. The first vent and the second vent are spaced apart in the circumferential direction around the rotation axis of the valve core. When the valve core is in the first angle position, the second vent and the first vent are respectively connected to the valve air duct.

[0008] The valve duct can rotate along with the valve core to switch the connection and isolation between the valve duct and the first vent, and to switch the connection and isolation between the valve duct and the second vent.

[0009] When the valve core is in the first angle position, the second vent is connected to the valve duct; when the valve core is in the first angle position, the valve core isolates the backflow inlet from the second vent and the first vent; when the valve core is in the first angle position, the valve duct connects the air inlet channel and the second vent, and also connects the air inlet channel and the first vent; when the valve core is in the first angle position, under the suction of the at least one suction motor, air can flow sequentially through the non-clean side of the second filter section, the second filter section, the clean side of the second filter section, the second vent, the valve duct, and the air inlet channel;

[0010] When the valve core is in the second angle position, the second vent is connected to the valve air duct; when the valve core is in the second angle position, the valve core isolates the backflow inlet from the second vent.

[0011] When the valve core is in the second angle position, under the suction of the at least one suction motor, air can flow sequentially through the backflow inlet, the first vent, the clean side of the first filter, the first filter, and the non-clean side of the first filter; when the valve core is in the second angle position, under the suction of the at least one suction motor, air can flow sequentially through the non-clean side of the second filter, the second filter, the clean side of the second filter, the second vent, the valve duct, and the air inlet channel.

[0012] The valve core can rotate between a second angular position and a third angular position; the valve core can rotate from a first angular position to a second angular position in a direction of rotation; the valve core can rotate from a second angular position through a first angular position to a third angular position in the opposite direction of rotation.

[0013] When the valve core is in the third angle position, the second vent is isolated from the valve duct; when the valve core is in the third angle position, the first vent is connected to the valve duct; when the valve core is in the third angle position, the valve core isolates the backflow inlet from the first vent; when the valve core is in the third angle position, the backflow inlet is connected to the second vent.

[0014] When the valve core is in the third angle position, under the suction of the at least one suction motor, air can flow sequentially through the non-clean side of the first filter section, the first filter section, the clean side of the first filter section, the first vent, the valve duct, and the air inlet channel.

[0015] When the valve core is in the third angle position, under the suction of the at least one suction motor, air can flow sequentially through the backflow inlet, the second vent, the clean side of the second filter, the second filter, and the non-clean side of the second filter.

[0016] Optionally, when the valve core is in the second angle position, under the suction of the at least one suction motor, air can flow sequentially through the backflow inlet, the first vent, the clean side of the first filter, the first filter, the non-clean side of the first filter, the non-clean side of the second filter, the second filter, the clean side of the second filter, the second vent, the valve duct, and the air inlet channel.

[0017] When the valve core is in the third angle position, under the suction of the at least one suction motor, air can flow sequentially through the backflow inlet, the second vent, the clean side of the second filter, the second filter, the non-clean side of the second filter, the non-clean side of the first filter, the first filter, the clean side of the first filter, the first vent, the valve duct, and the air inlet channel.

[0018] Optionally, when the valve core is in the second angle position, a first reverse flow duct is formed between the valve core and the housing, connecting the backflow inlet and the first vent; when the valve core is in the third angle position, a second reverse flow duct is formed between the valve core and the housing, connecting the backflow inlet and the second vent.

[0019] When the valve core is in the second angle position, under the suction of the at least one suction motor, air can flow sequentially through the backflow inlet, the first backflow duct, the first vent, the clean side of the first filter, the first filter, the non-clean side of the first filter, the non-clean side of the second filter, the second filter, the clean side of the second filter, the second vent, the valve duct, and the air inlet channel.

[0020] When the valve core is in the third angle position, under the suction of the at least one suction motor, air can flow sequentially through the backflow inlet, the second backflow duct, the second vent, the clean side of the second filter, the second filter, the non-clean side of the second filter, the non-clean side of the first filter, the first filter, the clean side of the first filter, the first vent, the valve duct, and the air inlet channel.

[0021] Optionally, the valve duct is at least partially formed inside the valve core, and the valve duct is at least partially surrounded by the valve core. When the valve core is in the second angle position, the backflow inlet and the first vent are connected because they are not isolated by the valve core. When the valve core is in the third angle position, the backflow inlet and the second vent are connected because they are not isolated by the valve core.

[0022] Optionally, the valve duct has a valve inlet and a valve outlet. The valve inlet is located on one side of the valve core in the radial direction, and the valve outlet is located on one end of the valve core in the axial direction. The valve outlet is located downstream of the valve inlet and upstream of the air inlet channel. The valve inlet moves relative to the first vent and the second vent as the valve core rotates, so as to switch the valve inlet and the first vent are aligned and connected and the valve inlet and the first vent are staggered and isolated, and to switch the valve inlet and the second vent are aligned and connected and the valve inlet is staggered and isolated.

[0023] When the valve core is in the first angle position, the first vent is connected to the valve inlet; when the valve core is in the first angle position, the second vent is connected to the valve inlet; when the valve core is in the first angle position, under the suction of the at least one suction motor, air can sequentially flow through the non-clean side of the first filter section, the first filter section, the clean side of the first filter section, the first vent, the valve inlet, the valve outlet, and the air inlet channel; when the valve core is in the first angle position, under the suction of the at least one suction motor, air can sequentially flow through the non-clean side of the second filter section, the second filter section, the clean side of the second filter section, the second vent, the valve inlet, the valve outlet, and the air inlet channel.

[0024] When the valve core is in the second angle position, the first vent is offset from the valve inlet and isolated from the valve air duct; when the valve core is in the second angle position, the second vent is connected to the valve inlet; when the valve core is in the second angle position, under the suction of the at least one suction motor, air can flow sequentially through the non-clean side of the second filter section, the second filter section, the clean side of the second filter section, the second vent, the valve inlet, the valve outlet, and the air inlet channel.

[0025] When the valve core is in the third angle position, the second vent is offset from the valve inlet and isolated from the valve air duct; when the valve core is in the third angle position, the first vent is connected to the valve inlet; when the valve core is in the third angle position, under the suction of the at least one suction motor, air can flow sequentially through the non-clean side of the first filter section, the first filter section, the clean side of the first filter section, the first vent, the valve inlet, the valve outlet, and the air inlet channel.

[0026] Optionally, the valve inlet is formed as a single opening on the valve core, wherein the circumferential dimensions of the first vent and the second vent in the circumferential direction around the axis of rotation of the valve core are smaller than the circumferential dimensions of the valve inlet in the circumferential direction around the axis of rotation of the valve core.

[0027] Optionally, the housing is provided with a first air chamber corresponding to the first filter section and a second air chamber corresponding to the second filter section. The first vent serves as the external ventilation port for the first air chamber, and the second vent serves as the external ventilation port for the second air chamber. When the valve core is in the first angle position, under the suction of the at least one suction motor, air can flow sequentially through the non-clean side of the first filter section, the first filter section, the first air chamber, the first vent, the valve inlet, the valve outlet, and the air inlet channel. When the valve core is in the first angle position, under the suction of the at least one suction motor, air can flow sequentially through the non-clean side of the second filter section, the second filter section, the second air chamber, the second vent, the valve inlet, the valve outlet, and the air inlet channel.

[0028] Optionally, the first air chamber is located on the clean side of the first filter section, the second air chamber is located on the clean side of the second filter section, the first filter section and the first vent are located on opposite sides of the first air chamber, and the first filter section is shielded on the side of the first air chamber away from the first vent; the second filter section and the second vent are located on opposite sides of the second air chamber, and the second filter section is shielded on the side of the second air chamber away from the second vent.

[0029] Optionally, it also includes a servo motor for driving the valve core to rotate, the shaft of the servo motor being connected to the valve core, and the shaft of the servo motor being located at opposite ends of the valve core to the valve outlet; the valve core can rotate between a second angular position and a third angular position under the drive of the servo motor.

[0030] Optionally, it also includes a servo motor for driving the valve core rotation. The housing also has a third air chamber, which is located on opposite sides of the valve core to the servo motor. The air inlet channel connects to the third air chamber, which is located downstream of the valve duct and connects the valve duct and the air inlet channel. When the valve core is in the first angle position, under the suction of the at least one suction motor, air can sequentially flow through the non-clean side of the first filter section, the first filter section, the first air chamber, the first vent, the valve duct, the third air chamber, and the air inlet channel. When the valve core is in the first angle position, under the suction of the at least one suction motor, air can... The air flows sequentially through the non-clean side of the second filter section, the second filter section, the second air chamber, the second vent, the valve duct, the third air chamber, and the air inlet channel. When the valve core is in the second angle position, under the suction of the at least one suction motor, the air can flow sequentially through the non-clean side of the second filter section, the second filter section, the second air chamber, the second vent, the valve duct, the third air chamber, and the air inlet channel. When the valve core is in the third angle position, under the suction of the at least one suction motor, the air can flow sequentially through the non-clean side of the first filter section, the first filter section, the first air chamber, the first vent, the valve duct, the third air chamber, and the air inlet channel.

[0031] Optionally, the housing includes a cylindrical portion surrounding the rotation axis of the valve core, with the valve core and the cylindrical portion coaxially arranged; a backflush inlet is an opening on the cylindrical portion, a first vent is an opening on the cylindrical portion, and a second vent is an opening on the cylindrical portion, with the backflush inlet, the second vent, and the first vent distributed sequentially in the circumferential direction surrounding the valve core; the cylindrical portion includes a separating band located between the first vent and the second vent, separating the first vent and the second vent in the circumferential direction of the cylindrical portion; the backflush inlet and the separating band are radially spaced opposite each other in the cylindrical portion.

[0032] Optionally, the valve core is installed inside the cylindrical part. The valve core is inserted into the cylindrical part from the end of the cylindrical part away from the air inlet channel at opposite axial ends. The valve core includes a first ring and a second ring. The cylindrical part, the first ring, and the second ring are coaxially arranged. The first ring and the second ring are located at opposite ends of the valve core in the axial direction. The first ring and the second ring are located inside the cylindrical part. The first ring is located inside one end of the cylindrical part in the axial direction, and the second ring is located inside the other end of the cylindrical part in the axial direction. The outer peripheral surfaces of the first ring and the second ring are in contact with the inner peripheral surface of the cylindrical part. When the valve core rotates, the outer peripheral surfaces of the first ring and the second ring slide against the inner peripheral surface of the cylindrical part. The valve air duct has a valve outlet, which is surrounded by the second ring. The second ring is closer to the air inlet channel than the first ring.

[0033] Optionally, the valve core includes a first side and a second side, which are spaced apart circumferentially. The valve inlet of the valve duct is formed between the first and second sides. When the valve core is in a first angular position, the first side is located on the side of the first vent furthest from the partition, and the second side is located on the side of the second vent furthest from the partition. As the valve core rotates from the first angular position to the second angular position in the direction of rotation, the first side rotates from the side of the first vent furthest from the partition to the partition, so that the first vent and the backflow inlet are no longer isolated by the valve core, thereby connecting the first vent and the backflow inlet. As the valve core rotates in the opposite direction... The direction rotates from the first angle position to the third angle position, and the second side rotates from the side of the second vent away from the partition to the partition, so that the second vent and the backflush inlet are no longer isolated by the valve core, thus connecting the second vent and the backflush inlet; when the valve core is in the first angle position, the first side and the second side are located radially inside the cylinder; when the valve core is in the second angle position, the first side is located radially inside the partition; when the valve core is in the second angle position, the second side is located radially inside the cylinder; when the valve core is in the third angle position, the second side is located radially inside the partition; when the valve core is in the third angle position, the first side is located radially inside the cylinder.

[0034] Optionally, when the valve core is in the first angular position, the first side and the second side are located radially inside the cylinder and abut against the cylinder; when the valve core is in the second angular position, the first side is located radially inside the partition and abut against the partition; when the valve core is in the second angular position, the second side is located radially inside the cylinder and abut against the cylinder; when the valve core is in the third angular position, the second side is located radially inside the partition and abut against the partition; when the valve core is in the third angular position, the first side is located radially inside the cylinder and abut against the cylinder.

[0035] Optionally, the valve core includes a first baffle and a second baffle, which are spaced apart and opposite to each other in the circumferential direction of the valve core. A first side constitutes the outer side of the first baffle, and a second side constitutes the outer side of the second baffle. When the valve core is in a first angular position, the first baffle blocks the first vent and the backflow inlet; when the valve core is in the first angular position, the second baffle blocks the second vent and the backflow inlet. As the valve core rotates from the first angular position to the second angular position, the first baffle rotates from the side of the first vent away from the dividing strip to the dividing strip, allowing the first vent... The first vent is not blocked by the first baffle, thus connecting the first vent and the backflow inlet; when the valve core is in the second angle position, the second baffle blocks the second vent and the backflow inlet; as the valve core rotates from the first angle position to the third angle position, the second baffle rotates from the side of the second vent away from the separator to the separator, so that the second vent and the backflow inlet are not blocked by the second baffle, thus connecting the second vent and the backflow inlet; when the valve core is in the third angle position, the first baffle blocks the first vent and the backflow inlet.

[0036] Optionally, when the valve core is in the first angular position, the first and second baffles are located radially inside the cylindrical portion; when the valve core is in the second angular position, the first baffle is located radially inside the separating band; when the valve core is in the second angular position, the second baffle is located radially inside the cylindrical portion; when the valve core is in the third angular position, the second baffle is located radially inside the separating band; when the valve core is in the third angular position, the first baffle is located radially inside the cylindrical portion; the first and second sides are parallel to the rotation axis of the valve core; the first and second baffles are straight strips, and the first and second baffles are parallel to the rotation axis of the valve core.

[0037] Optionally, the housing is provided with a first air chamber corresponding to the first filter section, a second air chamber corresponding to the second filter section, and a partition wall. The first air chamber is located on the clean side of the first filter section, and the second air chamber is located on the clean side of the second filter section. The first vent forms the vent for the external ventilation of the first air chamber, and the second vent forms the vent for the external ventilation of the second air chamber. The partition wall extends outward from the cylindrical portion, and at least a part of the partition wall integrally extends radially outward from the partition band. The partition wall separates the first air chamber and the second air chamber, and the partition wall extends along the direction away from the rotation axis of the valve core to the boundary between the first filter section and the second filter section, and the partition wall abuts against the boundary portion between the first filter section and the second filter section. The vacuum cleaner includes a filtering device, the filtering device is installed in the housing, and the filtering device includes the first filter section, the second filter section, and a flexible frame. The flexible frame is connected to the first filter section and the second filter section, and the flexible frame is in the shape of a Chinese character 'Ri' (日). The flexible frame includes a flexible cross beam in the middle. In the radial direction of the cylindrical portion, the backflush air inlet, the partition band, the partition wall, and the flexible cross beam are arranged in sequence. The partition wall abuts against the flexible cross beam, and the flexible cross beam forms the boundary portion between the first filter section and the second filter section.

[0038] Optionally, the valve core includes a circumferential retaining wall, the circumferential retaining wall is integrally connected to the first retaining wall and the second retaining wall, the circumferential retaining wall extends from the inner side edge of the first retaining wall around the rotation axis of the valve core to the inner side edge of the second retaining wall, and the cylindrical portion is spaced from the circumferential retaining wall. When the valve core is in the second angular position, the space between the part of the cylindrical wall of the cylindrical portion between the first vent and the backflush air inlet and the circumferential retaining wall and the first retaining wall forms a first reverse flow air duct connecting the first vent and the backflush air inlet. When the valve core is in the third angular position, the space between the part of the cylindrical wall of the cylindrical portion between the second vent and the backflush air inlet and the circumferential retaining wall and the second retaining wall forms a second reverse flow air duct connecting the second vent and the backflush air inlet.

[0039] Optionally, it further includes a servo motor for driving the rotation of the valve core. The first ring portion is adjacent to the servo motor. The valve core includes a first ring portion and a second ring portion. The first ring portion and the second ring portion are located at opposite ends in the axial direction of the valve core. The valve air duct has a valve outlet, and the valve outlet is surrounded by the second ring portion. The valve core further includes a first baffle and a second baffle. The first baffle and the second baffle are opposite to each other in the axial direction of the valve core. The first baffle is integrally connected to the first ring portion and the circumferential retaining wall, and the first baffle extends radially outward from one end of the circumferential retaining wall to the first ring portion. The second baffle is integrally connected to the second ring portion and the circumferential retaining wall, and the second baffle extends radially outward from the opposite end of the circumferential retaining wall to the second ring portion. The first baffle and the second baffle are perpendicular to the rotation axis of the valve core. The valve core includes an annular flange and a connecting portion connecting the rotating shaft of the servo motor. The annular flange extends radially outward from the second ring portion, and the annular flange can block the outside of the cylindrical portion.

[0040] Optionally, it also includes a dust collection head, which includes the at least one suction motor. The dust collection head is detachably mounted on the upper end of the dust collection container. The housing is located inside the dust collection head and is a single integrally formed part. The valve core is a single integrally formed part. The cross-section of the circumferential baffle is arc-shaped. The at least one suction motor includes a first suction motor and a second suction motor. The first suction motor and the second suction motor can be selected to perform suction work, and they cannot perform suction work at the same time.

[0041] Optionally, the at least one suction motor includes a first suction motor and a second suction motor, wherein one of the first suction motor and the second suction motor performs suction operation, and they do not perform suction operation simultaneously; the vacuum cleaner also includes a first air duct corresponding to the first suction motor, a second air duct corresponding to the second suction motor, and a valve. The first air duct is used to connect the first suction motor and the air inlet channel, and the second air duct is used to connect the second suction motor and the air inlet channel. The valve can rotate under the suction of the first suction motor or under the suction of the second suction motor; the valve includes a first valve plate and a second valve plate. When the second suction motor is not working and under the suction of the first motor, the first valve plate does not close the first air duct and the second valve plate closes the second air duct; when the first suction motor is not working... Under the suction of the second suction motor, the first valve plate closes the first air duct and the second valve plate does not close the second air duct; when the valve core is in the first angle position, under the suction of one of the first suction motor and the second suction motor, air can sequentially flow through the non-clean side of the first filter section, the first filter section, the clean side of the first filter section, the first vent, the valve air duct, the air inlet channel, the first air duct and the second air duct, and air can sequentially flow through the non-clean side of the second filter section, the second filter section, the clean side of the second filter section, the second vent, the valve air duct, the air inlet channel, the first air duct and the second air duct, and the air can sequentially flow through the non-clean side of the second filter section, the second filter section, the clean side of the second filter section, the second vent, the valve air duct, the air inlet channel, the first air duct and the second air duct, and the air duct corresponding to one of the first suction motor and the second suction motor;

[0042] When the valve core is in the second angle position, under the suction of one of the first suction motor and the second suction motor, air can flow sequentially through the non-clean side of the second filter section, the second filter section, the clean side of the second filter section, the second vent, the valve duct, the air inlet channel, the first duct, and the second duct corresponding to one of the first suction motors and the second suction motor. Air can also flow sequentially through the backflow inlet, the first vent, the clean side of the first filter section, the first filter section, and the non-clean side of the first filter section.

[0043] When the valve core is in the third angle position, under the suction of one of the first suction motor and the second suction motor, air can flow sequentially through the non-clean side of the first filter section, the first filter section, the clean side of the first filter section, the first vent, the valve duct, the air inlet channel, the first duct, and the second duct, one of which corresponds to one of the first suction motor and the second suction motor. Furthermore, air can flow sequentially through the backflow inlet, the second vent, the clean side of the second filter section, the second filter section, and the non-clean side of the second filter section.

[0044] Optionally, as the valve rotates, the first valve plate and the second valve plate rotate synchronously. The first air duct has a first inlet, which connects to the air intake channel. The second air duct has a second inlet, which connects to the air intake channel. The first valve plate can close the first inlet and open relative to it, and the second valve plate can close the second inlet and open relative to it. When the second suction motor is not working and the first suction motor is drawing air, the second valve plate is in a closed state for the second inlet and the first valve plate is in an open state relative to the first inlet, so that the airflow can flow sequentially through the air intake channel, the first air duct, and the first suction motor. When the first suction motor is not working and the second suction motor is drawing air, the first valve plate is in a closed state for the first inlet and the second valve plate is in an open state relative to the second inlet, so that the airflow can flow sequentially through the air intake channel, the second air duct, and the second suction motor. Attached Figure Description

[0045] Figure 1 This is a perspective view of the vacuum cleaner described in this application;

[0046] Figure 2 This is a perspective view of the vacuum cleaner of this application with its two suction motors, air duct assembly, housing, filter device, valve core, and servo motor assembled together.

[0047] Figure 3 This is a perspective view of the vacuum cleaner of this application with its two suction motors, air duct assembly, housing, and filter device assembled together.

[0048] Figure 4 This is an exploded view of the vacuum cleaner of this application with the two suction motors, air duct assembly, housing, filter device, valve core, servo motor, and valve in the separated state.

[0049] Figure 5 An exploded view of the first and second parts of the air duct assembly of the vacuum cleaner of this application, with the valve in the separated state;

[0050] Figure 6 Another exploded view of the first and second parts of the air duct assembly of the vacuum cleaner of this application, with the valve separated;

[0051] Figure 7 Partial cross-sectional view of the vacuum cleaner of the present application (the valve is in the first position and the cross-section is perpendicular to the rotation axis of the valve);

[0052] Figure 8 Partial cross-sectional view of the vacuum cleaner of the present application (different from Figure 7 in that the valve is in the second position);

[0053] Figure 9 Exploded view of the housing, valve core, and servo motor of the vacuum cleaner of the present application in a separated state;

[0054] Figure 10 Exploded view of the housing and valve core of the vacuum cleaner of the present application in a separated state;

[0055] Figure 11 Partial cross-sectional view of the vacuum cleaner of the present application (the valve core is in the first angular position and the cross-section is perpendicular to the rotation axis of the valve core);

[0056] Figure 12 Partial cross-sectional view of the vacuum cleaner of the present application (different from Figure 11 in that the valve core is in the second angular position);

[0057] Figure 13 Partial cross-sectional view of the vacuum cleaner of the present application (different from Figure 11 in that the valve core is in the third angular position);

[0058] Figure 14 Partial cross-sectional view of the vacuum cleaner of the present application (the valve core is in the third angular position and the cross-section is perpendicular to the rotation axis of the valve core). Detailed implementation manner

[0059] Refer Figures 1 to 14As shown, the vacuum cleaner 1 includes a dust collection container 10 and at least one suction motor, which includes a first suction motor 20 and a second suction motor 21. The vacuum cleaner 1 also includes an air inlet channel 30, a first air duct 31 corresponding to the first suction motor 20, a second air duct 32 corresponding to the second suction motor 21, and a valve 4. The first air duct 31 is used to connect the first suction motor 20 and the air inlet channel 30, and the second air duct 32 is used to connect the second suction motor 21 and the air inlet channel 30. The valve 4 can rotate under the suction of the first suction motor 20 and also under the suction of the second suction motor 21. The valve 4 includes a first valve plate 40, a second valve plate 41, a third valve plate 42, a third valve plate 43, a fourth valve plate 43, a fifth valve plate 44, a sixth valve plate 44, a seventh valve plate 44, a seventh valve plate 45, a sixth valve plate 46, a seventh valve plate 47, a ninth valve plate 48, a thief's tenth valve plate 49 ... The two valve plates 41 rotate synchronously with the rotation of the valve 4. When the second suction motor 21 is not working and the first suction motor 20 is suctioning, the first valve plate 40 does not close the first air duct 31 and the second valve plate 41 closes the second air duct 32, so that the airflow can flow through the air inlet channel 30, the first air duct 31, and the first suction motor 20 in sequence. When the first suction motor 20 is not working and the second suction motor 21 is suctioning, the first valve plate 40 closes the first air duct 31 and the second valve plate 41 does not close the second air duct 32, so that the airflow can flow through the air inlet channel 30, the second air duct 32, and the second suction motor 21 in sequence.

[0060] The first air duct 31 has a first inlet 310, which connects to the air inlet channel 30. The second air duct 32 has a second inlet 320, which connects to the air inlet channel 30. The first valve plate 40 can close the first inlet 310 and open relative to it, and the second valve plate 41 can close the second inlet 320 and open relative to it. When the second suction motor 21 is not working and the first suction motor 20 is under suction, the second valve... When plate 41 is in a closed state for the second inlet 320 and the first valve plate 40 is in an open state relative to the first inlet 310, the airflow can flow sequentially through the air inlet channel 30, the first air duct 31, and the first suction motor 20; when the first suction motor 20 is not working and under the suction of the second suction motor 21, the first valve plate 40 is in a closed state for the first inlet 310 and the second valve plate 41 is in an open state relative to the second inlet 320, the airflow can flow sequentially through the air inlet channel 30, the second air duct 32, and the second suction motor 21.

[0061] The first suction motor 20 and the second suction motor 21 can be selected to perform suction work, and they cannot perform suction work simultaneously; optionally, the first suction motor 20 is an AC brushed motor, which is powered by an external AC power source (such as AC mains) via a cable; optionally, the second suction motor 21 is a DC brushless motor, which can be powered by a battery pack. This configuration eliminates the need for an AC / DC converter in the vacuum cleaner 1, thus reducing costs, as AC / DC converters are relatively more expensive; the vacuum cleaner 1 can be equipped with a control circuit board containing a control chip, which controls the vacuum cleaner 1 to preferentially use AC power (preferably an AC brushed motor for suction work), and... When the dust collector 1 is connected to an AC power source and a battery pack, under the automatic control of the control chip, the first suction motor 20 operates while the second suction motor 21 does not, and the power supply connection of the battery pack to the second suction motor 21 is disconnected. Optionally, the first suction motor 20 and the second suction motor 21 have different rated power, thus providing users with different suction capabilities. Alternatively, it can be designed so that the operation of the first suction motor 20 or the second suction motor 21 can be manually selected via a switch 11. When the switch 11 is switched to the left (position 1), the first suction motor 20 operates; when the switch 11 is switched to the right (position 2), the second suction motor 21 operates. Figure 1 The switch 11 is in the off position, and it does not switch to the left or right. At this time, the vacuum cleaner 1 is in the off state.

[0062] The vacuum cleaner 1 also includes a head 12, latches 13, several wheels 14, and a suction port 19. The head 12 includes at least one suction motor located inside the head 12. The head 12 is detachably mounted on the upper part of the dust collection container 10. A latch 13 is provided on each of the left and right sides of the head 12, and the head 12 and the dust collection container 10 are locked together by the latches 13. The wheels 14 are located at the lower part of the dust collection container 10. When the second suction motor 21 is not working and under the suction of the first suction motor 20, the air pressure in the second air duct 32 is greater than the air pressure in the first air duct 31 and the suction port 19. The air pressure in the air duct 30 and the air pressure in the second air duct 32 push the second valve plate 41 to close the second inlet 320 (or, the air pressure in the second air duct 32 pushes the second valve plate 41 to close the second air duct 32). When the first suction motor 20 is not working and the second suction motor 21 is suctioning, the air pressure in the first air duct 31 is greater than the air pressure in the second air duct 32 and the air pressure in the air inlet duct 30. The air pressure in the first air duct 31 pushes the first valve plate 40 to close the first inlet 310 (or, the air pressure in the first air duct 31 pushes the first valve plate 40 to close the first air duct 31). The suction port 19 is provided on the dust collection container 10. Under the suction of the at least one suction motor, the suction airflow carrying dirt is sucked into the dust collection container 10 through the suction port 19, filtered by the filter device 6, and then discharged. The suction port 19 can also be designed to be located on the machine head 12. The dust collection container 10 has a capacity between 0.5 gallons (1 gallon = 3.785412 liters) and 30 gallons, preferably between 1 gallon and 20 gallons, such as 6 gallons, 9 gallons, 12 gallons, 14 gallons, and 16 gallons. The battery pack can be plugged into a connection slot provided on the head unit 12.

[0063] Valve 4 can rotate between a first position and a second position; valve 4 is limited to rotating between the first position and the second position; when the second suction motor 21 is not working and under the suction of the first suction motor 20, valve 4 rotates to the first position; when valve 4 is in the first position, the first valve plate 40 is open relative to the first inlet 310 and the second valve plate 41 closes the second inlet 320; when the first suction motor 20 is not working and under the suction of the second suction motor 21, valve 4 rotates to the second position; when valve 4 is in the second position, the second valve plate 41 is open relative to the second inlet 320 and the first valve plate 40 closes the first inlet 310; the rotation axis of valve 4 is located between the first suction motor 20 and the second suction motor 21, valve 4 can rotate from the first position to the side closer to the rotation axis of the second suction motor 21 to turn to the second position, and valve 4 can rotate from the second position to the side closer to the rotation axis of the first suction motor 20 to turn to the first position. The rotation axis of the first suction motor 20 is the same as the rotation axis of the shaft of the first suction motor 20, and the rotation axis of the second suction motor 21 is the same as the rotation axis of the shaft of the second suction motor 21.

[0064] Vacuum cleaner 1 also includes an air duct assembly 5 and a filter device 6. The filter device 6 is used to filter dirt that enters the vacuum cleaner 1 along with the suction airflow. The dirt filtered by the filter device 6 is retained in the dust collection container 10. A valve 4 is disposed in the air duct assembly 5 and is rotatably connected to the air duct assembly 5. An air inlet channel 30, a first air duct 31, and a second air duct 32 are formed in the air duct assembly 5. The air duct assembly 5 includes a tray 500. A first suction motor 20 and a second suction motor 21 are located on the upper side of the tray 500 and support the first suction motor 20 and the second suction motor 21. The first air duct 31 and the second air duct 32 are formed on the lower side of the tray 500. The first suction motor 20 and the second suction motor 21 are upright on the tray 500. The first air duct 31 has a first outlet 311 corresponding to the first suction motor 20. The outlet 311 faces upward toward the first suction motor 20; the second air duct 32 has a second outlet 321 corresponding to the second suction motor 21, and the second outlet 321 faces upward toward the second suction motor 21; the first outlet 311 and the second outlet 321 are opened in the tray portion 500, and the first outlet 311 and the second outlet 321 are spaced apart in the horizontal direction, specifically, the first outlet 311 and the second outlet 321 are spaced apart in the left and right direction; the first suction motor 20 and the second suction motor 21 are spaced apart in the horizontal direction, specifically, the first suction motor 20 and the second suction motor 21 are spaced apart in the left and right direction; the rotation axis of the first suction motor 20, the rotation axis of the second suction motor 21, and the rotation axis of the valve 4 all extend in the vertical direction, and the rotation axis of the valve 4 is located between the first suction motor 20 and the second suction motor 21.

[0065] The air inlet channel 30 includes a horizontal extension section 300 and a vertical extension section 301. The first air duct 31 and the second air duct 32 are located downstream of the horizontal extension section 300, which is also downstream of the vertical extension section 301. The vertical extension section 301 extends upward from the rear end of the horizontal extension section 300. The first air duct 31 and the second air duct 32 extend in the left and right directions, respectively. The first air duct 31 extends to the left from the front end of the horizontal extension section 300, and the second air duct 32 extends to the right from the front end of the horizontal extension section 300. The first air duct 31 has a first outlet 311 corresponding to the first suction motor 20, and the second air duct 32 has a second outlet 321 corresponding to the second suction motor 21. The first outlet 311 is located on the upper side of one end of the first air duct 31, and the second outlet 321 is located on the upper side of one end of the second air duct 32. The filter device 6 and the at least one suction motor are located on the front and rear sides of the vertical extension section 301. The filter device 6 is located on the rear side of the vertical extension section 301. This design allows for a compact and reasonable layout of the various parts. Horizontal extension refers to extension in a basic horizontal direction, such as extending to the left or right, or extending forward or backward.

[0066] The first outlet 311 is adjacent to the air inlet 200 of the first suction motor 20, and the first outlet 311 and the air inlet 200 of the first suction motor 20 are vertically opposite and connected; the second outlet 321 is adjacent to the air inlet 210 of the second suction motor 21, and the second outlet 321 and the air inlet 210 of the second suction motor 21 are vertically opposite and connected; the first suction motor 20 and the second suction motor 21 are respectively provided with moving impellers. The moving impeller of the first suction motor 20 rotates under the drive of the rotating shaft of the first suction motor 20 to drive the air flow and form a suction airflow. The moving impeller of the second suction motor 21 rotates under the drive of the rotating shaft of the second suction motor 21 to drive the air flow and form a suction airflow.

[0067] The vacuum cleaner 1 includes a housing 7, a filter device 6 installed on the housing 7, and the housing 7 connected to the air duct assembly 5. The housing 7 is located upstream of the air inlet channel 30. When the second suction motor 21 is not working and the first suction motor 20 is operating, the first valve plate 40 opens relative to the first inlet 310, and the second valve plate 41 closes the second inlet 320. The airflow (generated by the first suction motor 20) can flow sequentially through the filter device 6, the housing 7, the air inlet channel 30, the first air duct 31, and the first suction motor 20. When the first suction motor 20 is not working and the second suction motor 21 is operating, the second valve plate 41 opens relative to the second inlet 320, and the first valve plate 40 closes the first inlet 310. The airflow (generated by the second suction motor 21) can flow sequentially through the filter device 6, the housing 7, the air inlet channel 30, the second air duct 32, and the second suction motor 21. The air duct assembly 5 and the housing 7 are fixedly mounted on the head 12, and the housing 7 is located inside the head 12. The air duct assembly 5 and the housing 7 each constitute part of the head unit 12. The head unit 12 also includes a housing 120 and a handle 121 disposed on the upper side of the housing 120. The head unit 12 can be installed on and removed from the upper end of the dust collection container 10 as a whole. The housing 7 is located inside the housing 120.

[0068] The air duct assembly 5 includes a first part 50 and a second part 51, which are integrally formed single parts. The first part 50 and the second part 51 are combined to form the air duct assembly 5. The air inlet channel 30, the first air duct 31, and the second air duct 32 are formed between the first part 50 and the second part 51, respectively. The tray part 500 is part of the first part 50. The valve 4 is located between the tray part 500 and the portion of the second part 51 located on the lower side of the tray part 500. The first air duct 31 and the second air duct 32 are formed between the tray part 500 and the portion of the second part 51 located on the lower side of the tray part 500. The air inlet 302 of the air inlet channel 30 is located at the upper end of the air inlet channel 30 and is formed between the first part 50 and the second part 51. The second part 51 includes a bottom plate 510 located below the tray part 500 and a rear side plate 511 located behind the first part 50. The first air duct 31, the second air duct 32, and the lateral extension section 300 are formed between the tray part 500 and the bottom plate 510. The longitudinal extension section 301 is formed between the first part 50 and the rear side plate 511.

[0069] The valve 4 also includes a first rotating shaft portion 42 and a second rotating shaft portion 43. The first rotating shaft portion 42 and the second rotating shaft portion 43 are coaxially arranged and extend on the rotation axis of the valve 4, respectively. The first rotating shaft portion 42 and the second rotating shaft portion 43 constitute the rotation axis of the valve 4. The first rotating shaft portion 42 is located on the upper side of the valve 4 and extends upward from the junction of the first valve plate 40 and the second valve plate 41. The valve 4 is rotatably connected to the first part 50 through the first rotating shaft portion 42 and is rotatably connected to the tray part 500 through the first rotating shaft portion 42. The second rotating shaft portion 43 is located on the lower side of the valve 4 and extends downward from the junction of the first valve plate 40 and the second valve plate 41. The valve 4 is rotatably connected to the second part 51 through the second rotating shaft portion 43 and is rotatably connected to the base plate 510 through the second rotating shaft portion 43.

[0070] The first valve plate 40 includes a first protruding portion 400 for reinforcing the strength of the first valve plate 40. The first protruding portion 400 is located on the side of the first valve plate 40 opposite to the air inlet channel 30. When the first valve plate 40 is closed to the first inlet 310, the first protruding portion 400 is embedded in the first inlet 310. The second valve plate 41 includes a second protruding portion 410 for reinforcing the strength of the second valve plate 41. The second protruding portion 410 is located on the side of the second valve plate 41 opposite to the air inlet channel 30. When the second valve plate 41 is closed to the second inlet 320, the second protruding portion 410 is embedded in the second inlet 320. The first protruding portion 400 and the second protruding portion 410 are each formed by multiple protruding ribs.

[0071] The air duct assembly 5 also includes a first baffle 520, a second baffle 521, and a third baffle 522 corresponding to the first valve plate 40, and a fourth baffle 530, a fifth baffle 531, and a sixth baffle 532 corresponding to the second valve plate 41. The first baffle 520, the second baffle 521, and the third baffle 522 form part of the periphery of the first inlet 310. The first baffle 520, the second baffle 521, and the third baffle 522 together form a U-shape. The first baffle 520 and the second baffle 521 are located in the first part 50, and the third baffle 522 is located in the second part 51; the fourth baffle... Rib 530, fifth rib 531, and sixth rib 532 form part of the periphery of the second entrance 320. The fourth rib 530, fifth rib 531, and sixth rib 532 together form a U-shape. The fourth rib 530 and fifth rib 531 are located in the first part 50, and the sixth rib 532 is located in the second part 51. The first rib 520 and the fourth rib 530 are connected to form a V-shape, the third rib 522 and the sixth rib 532 are connected to form a V-shape, the first rib 520 and the second rib 521 are connected to form an L-shape, and the fourth rib 530 and the fifth rib 531 are connected to form an L-shape.

[0072] When valve 4 is in the second position, the first valve plate 40 abuts against the first baffle 520, the second baffle 521, and the third baffle 522 to close the first inlet 310; when valve 4 is in the first position, the second valve plate 41 abuts against the fourth baffle 530, the fifth baffle 531, and the sixth baffle 532 to close the second inlet 320; the rotation axis of valve 4, the second baffle 521, and the fifth baffle 531 all extend in the vertical direction. With the first valve plate 40 closing the first inlet 310, the second valve plate 41... The upper edge of the first valve plate 40 abuts against the first baffle 520, the lower edge of the first valve plate 40 abuts against the third baffle 522, and the side edge of the first valve plate 40 away from the rotation axis of the valve 4 abuts against the second baffle 521. With the second valve plate 41 closed at the second inlet 320, the upper edge of the second valve plate 41 abuts against the fourth baffle 530, the lower edge of the second valve plate 41 abuts against the sixth baffle 532, and the side edge of the second valve plate 41 away from the rotation axis of the valve 4 abuts against the fifth baffle 531. With the first valve plate 40 closed at the first inlet 310, the first protrusion 400 is embedded between the first baffle 520 and the third baffle 522. With the second valve plate 41 closed at the second inlet 320, the second protrusion 410 is embedded between the fourth baffle 530 and the sixth baffle 532. The angle formed between the first valve plate 40 and the second valve plate 41 is an obtuse angle, between 125 degrees and 155 degrees.

[0073] Vacuum cleaner 1 includes a first filter section 60, a valve core 8 installed in a housing 7, and a valve duct 80. The valve duct 80 is at least partially formed inside the valve core 8 and is at least partially surrounded by the valve core 8. An air inlet channel 30 is used for fluid communication between the valve duct 80 and the at least one suction motor. The housing 7 is provided with a backflow air inlet 700 and a first vent 701 corresponding to the first filter section 60. The valve core 8 is at least partially located inside the housing 7 and can rotate relative to the housing 7, so that the valve core 8 can rotate to different angular positions relative to the housing 7. The valve core 8 can rotate relative to the housing 7 from a first angular position to a second angular position. When the valve core 8 is in the first angular position, the first... A vent 701 is connected to a valve duct 80; when the valve core 8 is in the first angle position, the valve core 8 isolates the backflow inlet 700 from the first vent 701; when the valve core 8 is in the first angle position, the valve duct 80 is connected between the air inlet channel 30 and the first vent 701; when the valve core 8 is in the first angle position, under the suction of the at least one suction motor, air (air in the dust collection container 10 or air in the non-clean side 150 of the first filter section 60) can flow sequentially through the non-clean side 150 of the first filter section 60, the first filter section 60, the clean side 151 of the first filter section 60, the first vent 701, the valve duct 80, and the air inlet channel 30.

[0074] When the valve core 8 is in the second angle position, the first vent 701 is isolated from the valve duct 80; when the valve core 8 is in the second angle position, the backflow inlet 700 is connected to the first vent 701; when the valve core 8 is in the second angle position, the backflow inlet 700 and the first vent 701 are connected because they are not isolated by the valve core 8; when the valve core 8 is in the second angle position, under the negative pressure of the non-clean side 150 of the first filter section 60 relative to the backflow inlet 700 (or under the suction of the at least one suction motor), air (air outside the backflow inlet 700) can flow sequentially through the backflow inlet 700, the first vent 701, the clean side 151 of the first filter section 60, the first filter section 60, and the non-clean side 150 of the first filter section 60, thereby gradually reducing the blockage of the first filter section 60 and achieving the cleaning of the first filter section 60. When the valve core 8 is in the second angle position, under the suction of the at least one suction motor, the non-clean side 150 of the first filter section 60 generates a negative pressure relative to the backflow inlet 700 and the outside of the vacuum cleaner 1. The backflow inlet 700 can be designed to be unobstructedly connected to the outside of the vacuum cleaner 1. The air outside the backflow inlet 700 can originate from the outside of the vacuum cleaner 1 and / or the airflow discharged by the at least one suction motor. Alternatively, the air flowing through the backflow inlet 700 can originate from the outside of the vacuum cleaner 1 and / or the airflow discharged by the at least one suction motor.

[0075] In this embodiment, the suction of at least one suction motor can be either the first suction motor 20 or the second suction motor 21. For the clogging removal scheme of the filter device 6, the at least one suction motor can be a single motor. For the first filter section 60, air flows sequentially through the non-clean side 150, the first filter section 60, and the clean side 151 of the first filter section 60. In this case, the air passes through the first filter section 60 in a forward direction. The dirt carried by the air is filtered by the first filter section 60 and can remain in the dust collection container 10. Some tiny dirt particles will gradually accumulate on the first filter section 60 and clog it. Air also flows sequentially through the clean side 151, the first filter section 60, and the non-clean side 150 of the first filter section 60. In this case, the air passes through the first filter section 60 in a reverse direction. This reverse flow of air backflushes the first filter section 60, effectively clearing the clogging. The air passing through the first filter section 60 in the opposite direction blows off the dirt clogging the first filter section 60 and falls back into the dust collection container 10. The non-clean side 150 and clean side 151 of the first filter section 60 are based on the suction airflow carrying dirt that has been filtered by the first filter section 60. When the suction airflow carrying dirt flows to one side of the first filter section 60, the suction airflow has not yet been filtered by the first filter section 60, and the said side of the first filter section 60 belongs to the non-clean side 150 of the first filter section 60. When the suction airflow carrying dirt passes through the first filter section 60 and flows to the other side of the first filter section 60, thereby obtaining filtration from the first filter section 60, the said other side of the first filter section 60 belongs to the clean side 151 of the first filter section 60.

[0076] When the valve core 8 is in the second angle position, a first backflow duct 90 is formed between the valve core 8 and the housing 7, connecting the backflow inlet 700 and the first vent 701. When the valve core 8 is in the second angle position, under the negative pressure of the non-clean side 150 of the first filter section 60 relative to the backflow inlet 700 (or under the suction of the at least one suction motor), air (air outside the backflow inlet 700) can flow sequentially through the backflow inlet 700, the first backflow duct 90, the first vent 701, the clean side 151 of the first filter section 60, the first filter section 60, and the non-clean side 150 of the first filter section 60, thereby gradually reducing the blockage of the first filter section 60 and achieving cleaning of the first filter section 60.

[0077] The vacuum cleaner 1 also includes a second filter section 61, and the housing 7 is further provided with a second vent 702 corresponding to the second filter section 61. The first vent 701 and the second vent 702 are circumferentially spaced around the rotation axis of the valve core 8. When the valve core 8 is in a first angular position, the second vent 702 and the first vent 701 are respectively connected to the valve duct 80. The valve duct 80 can rotate with the rotation of the valve core 8 to switch the connection and isolation between the valve duct 80 and the first vent 701, and to switch the connection and isolation between the valve duct 80 and the second vent 702. When the valve core 8 is in the first angular position, the second vent 702 is connected to the valve duct 80. When the valve core 8 is in the first angle position, the valve core 8 isolates the backflow inlet 700 from the second vent 702 and the first vent 701; when the valve core 8 is in the first angle position, the valve air duct 80 connects the air inlet channel 30 and the second vent 702 and the air inlet channel 30 and the first vent 701; when the valve core 8 is in the first angle position, under the suction of the at least one suction motor, air (air in the dust collection container 10 or air in the non-clean side 160 of the second filter section 61) can flow sequentially through the non-clean side 160 of the second filter section 61, the second filter section 61, the clean side 161 of the second filter section 61, the second vent 702, the valve air duct 80, and the air inlet channel 30.

[0078] When the valve core 8 is in the second angle position, the second vent 702 is connected to the valve duct 80; when the valve core 8 is in the second angle position, the valve core 8 isolates the backflow inlet 700 from the second vent 702; when the valve core 8 is in the second angle position, under the suction of the at least one suction motor, air (air in the dust collection container 10 or air in the non-clean side 160 of the second filter section 61) can flow sequentially through the non-clean side 160 of the second filter section 61, the second filter section 61, the clean side 161 of the second filter section 61, the second vent 702, the valve duct 80, and the air inlet channel 30;

[0079] The valve core 8 can rotate between a second angular position and a third angular position; the valve core 8 can rotate from a first angular position to a second angular position in a direction of rotation; the valve core 8 can rotate from a first angular position to a third angular position in the opposite direction of rotation; the valve core 8 can rotate from a second angular position through a first angular position to a third angular position in the opposite direction of rotation; the valve core 8 is limited to rotating between the second angular position and the third angular position.

[0080] When valve core 8 is in the third angle position, the second vent 702 is isolated from the valve duct 80; when valve core 8 is in the third angle position, the first vent 701 is connected to the valve duct 80; when valve core 8 is in the third angle position, valve core 8 isolates the backflow inlet 700 from the first vent 701; when valve core 8 is in the third angle position, the backflow inlet 700 is connected to the second vent 702; when valve core 8 is in the third angle position, the backflow inlet 700 and the second vent 702 are connected because they are not isolated by valve core 8.

[0081] When the valve core 8 is in the third angle position, under the suction of the at least one suction motor, air (the air in the dust collection container 10 or the air in the non-clean side 150 of the first filter section 60) can flow sequentially through the non-clean side 150 of the first filter section 60, the first filter section 60, the clean side 151 of the first filter section 60, the first vent 701, the valve duct 80, and the air inlet duct 30.

[0082] When the valve core 8 is in the third angle position, under the negative pressure of the non-clean side 160 of the second filter section 61 relative to the backflow inlet 700 (or under the suction of the at least one suction motor), air (air outside the backflow inlet 700) can flow sequentially through the backflow inlet 700, the second vent 702, the clean side 161 of the second filter section 61, the second filter section 61, and the non-clean side 160 of the second filter section 61, thereby gradually reducing the blockage of the second filter section 61 and achieving cleaning of the second filter section 61. When the valve core 8 is in the third angle position, under the suction of the at least one suction motor, a negative pressure is generated on the non-clean side 160 of the second filter section 61 relative to the backflow inlet 700 and the external atmospheric environment.

[0083] When valve core 8 is in the first angle position, the vacuum cleaner 1 operates normally without clearing blockages in the filter device 6. When valve core 8 is in the first angle position, a suction airflow is formed under the suction of at least one suction motor. This airflow carries dust, debris, and other dirt through the suction port (i.e., suction port 19) and enters the dust collection container 10. The airflow then splits into two paths, flowing through the first filter section 60 and the second filter section 61 respectively, thus filtering the suction airflow. Turning valve core 8 to the second angle position allows for clearing blockages in the first filter section 60. In this case, the vacuum cleaner 1's ability to suction dirt is significantly reduced, therefore, the vacuum cleaner 1's suction operation is abnormal. Turning valve core 8 to the third angle position allows for clearing blockages in the second filter section 61. In this case, the vacuum cleaner 1's ability to suction dirt is also significantly reduced, therefore, the vacuum cleaner 1's suction operation is also abnormal.

[0084] For the second filter section 61, air flows sequentially through the non-clean side 160, the second filter section 61, and the clean side 161 of the second filter section 61. In this case, the air passes through the second filter section 61 in a forward direction. The dirt carried by the air is filtered by the second filter section 61 and can remain in the dust collection container 10. Some tiny dirt particles will accumulate on the second filter section 61 and gradually clog it. In the other case, air flows sequentially through the clean side 161, the second filter section 61, and the non-clean side 160 of the second filter section 61. In this case, the air passes through the second filter section 61 in a reverse direction. The air flowing in the reverse direction backflushes the second filter section 61, clearing the blockage. The air passing through the second filter section 61 in the opposite direction blows off the dirt clogging the second filter section 61, which falls back into the dust collection container 10. The non-clean side 160 and clean side 161 of the second filter section 61 are based on the suction airflow carrying dirt that is filtered by the second filter section 61. When the suction airflow carrying dirt flows to one side of the second filter section 61, the suction airflow has not yet been filtered by the second filter section 61, and the said side of the second filter section 61 belongs to the non-clean side 160 of the second filter section 61. When the suction airflow carrying dirt passes through the second filter section 61 and flows to the other side of the second filter section 61, thereby obtaining filtration from the second filter section 61, the said other side of the second filter section 61 belongs to the clean side 161 of the second filter section 61.

[0085] When the valve core 8 is in the second angle position, under the suction of the at least one suction motor, air (air outside the backflow inlet 700) can flow sequentially through the backflow inlet 700, the first vent 701, the clean side 151 of the first filter section 60, the first filter section 60, the non-clean side 150 of the first filter section 60, the non-clean side 160 of the second filter section 61, the second filter section 61, the clean side 161 of the second filter section 61, the second vent 702, the valve duct 80, and the air inlet channel 30.

[0086] When the valve core 8 is in the third angle position, under the suction of the at least one suction motor, air (air outside the backflow inlet 700) can flow sequentially through the backflow inlet 700, the second vent 702, the clean side 161 of the second filter section 61, the second filter section 61, the non-clean side 160 of the second filter section 61, the non-clean side 150 of the first filter section 60, the first filter section 60, the clean side 151 of the first filter section 60, the first vent 701, the valve duct 80, and the air inlet channel 30, thereby cleaning the blockage of the first filter section 60.

[0087] When the valve core 8 is in the third angle position, a second backflow duct 91 is formed between the valve core 8 and the housing 7, connecting the backflow inlet 700 and the second vent 702. When the valve core 8 is in the third angle position, under the negative pressure of the non-clean side 160 of the second filter section 61 relative to the backflow inlet 700 (or under the suction of the at least one suction motor), air (air outside the backflow inlet 700) can flow sequentially through the backflow inlet 700, the second backflow duct 91, the second vent 702, the clean side 161 of the second filter section 61, the second filter section 61, and the non-clean side 160 of the second filter section 61, thereby cleaning the blockage of the second filter section 61.

[0088] When the valve core 8 is in the second angle position, under the suction of the at least one suction motor, air (air outside the backflow inlet 700) can flow sequentially through the backflow inlet 700, the first backflow duct 90, the first vent 701, the clean side 151 of the first filter section 60, the first filter section 60, the non-clean side 150 of the first filter section 60, the non-clean side 160 of the second filter section 61, the second filter section 61, the clean side 161 of the second filter section 61, the second vent 702, the valve duct 80, and the air inlet channel 30.

[0089] When the valve core 8 is in the third angle position, under the suction of the at least one suction motor, air (air outside the backflow inlet 700) can flow sequentially through the backflow inlet 700, the second backflow duct 91, the second vent 702, the clean side 161 of the second filter section 61, the second filter section 61, the non-clean side 160 of the second filter section 61, the non-clean side 150 of the first filter section 60, the first filter section 60, the clean side 151 of the first filter section 60, the first vent 701, the valve duct 80, and the air inlet channel 30.

[0090] The valve duct 80 has a valve inlet 800 and a valve outlet 801. The valve inlet 800 and valve outlet 801 are located on the valve core 8, thus the valve core 8 has the valve inlet 800 and the valve outlet 801. The valve inlet 800 is located on one side radially of the valve core 8, and the valve outlet 801 is located on one end axially of the valve core 8. The valve outlet 801 is located downstream of the valve inlet 800 and upstream of the air inlet duct 30. The valve inlet 800 moves relative to the first vent 701 and the second vent 702 as the valve core 8 rotates, so as to switch the positions of the valve inlet 800 and the first vent 701 to be aligned and connected, and to be misaligned and isolated. The valve inlet 800 and the second vent 702 are aligned and connected, or staggered and isolated. In this embodiment, the valve inlet 800 is a single opening on the valve core 8. The circumferential dimensions of the first vent 701 and the second vent 702 around the rotation axis of the valve core 8 are smaller than the circumferential dimensions of the valve inlet 800 around the rotation axis of the valve core 8. Alternatively, the valve inlet 800 can be designed as two circumferentially separated halves, with one half corresponding to the first vent 701 and the other half corresponding to the second vent 702.

[0091] When the valve core 8 is in the first angle position, the first vent 701 is connected to the valve inlet 800; when the valve core 8 is in the first angle position, the second vent 702 is connected to the valve inlet 800; when the valve core 8 is in the first angle position, under the suction of the at least one suction motor, air (air in the dust collection container 10 or air in the non-clean side 150 of the first filter section 60) can flow sequentially through the non-clean side 150 of the first filter section 60, the first filter section 60, and the clean side 151 of the first filter section 60. The system includes a first vent 701, a valve inlet 800, a valve outlet 801, and an air inlet channel 30. When the valve core 8 is in the first angle position, under the suction of the at least one suction motor, air (the air in the dust collection container 10 or the air in the non-clean side 160 of the second filter section 61) can flow sequentially through the non-clean side 160 of the second filter section 61, the second filter section 61, the clean side 161 of the second filter section 61, the second vent 702, the valve inlet 800, the valve outlet 801, and the air inlet channel 30.

[0092] When the valve core 8 is in the second angle position, the first vent 701 is offset from the valve inlet 800 and isolated from the valve duct 80; when the valve core 8 is in the second angle position, the second vent 702 is connected to the valve inlet 800; when the valve core 8 is in the second angle position, under the suction of the at least one suction motor, air (air in the dust collection container 10 or air in the non-clean side 160 of the second filter section 61) can flow sequentially through the non-clean side 160 of the second filter section 61, the second filter section 61, the clean side 161 of the second filter section 61, the second vent 702, the valve inlet 800, the valve outlet 801, and the air inlet duct 30;

[0093] When the valve core 8 is in the third angle position, the second vent 702 is offset from the valve inlet 800 and isolated from the valve air duct 80; when the valve core 8 is in the third angle position, the first vent 701 is connected to the valve inlet 800; when the valve core 8 is in the third angle position, under the suction of the at least one suction motor, air (air in the dust collection container 10 or air in the non-clean side 150 of the first filter section 60) can flow sequentially through the non-clean side 150 of the first filter section 60, the first filter section 60, the clean side 151 of the first filter section 60, the first vent 701, the valve inlet 800, the valve outlet 801, and the air inlet duct 30.

[0094] The housing 7 is provided with a first air chamber 710 corresponding to the first filter section 60 and a second air chamber 711 corresponding to the second filter section 61. The first air chamber 710 is located on the clean side 151 of the first filter section 60, and the second air chamber 711 is located on the clean side 161 of the second filter section 61. The first air chamber 710 is connected between the first filter section 60 and the first vent 701, and the second air chamber 711 is connected between the second filter section 61 and the second vent 702. The first vent 701 constitutes the vent for external ventilation of the first air chamber 710, and the second vent 702 constitutes the vent for external ventilation of the second air chamber 711. When the valve core 8 is in the first angle position, under the suction of the at least one suction motor, air (air in the dust collection container 10 or air in the non-clean side 150 of the first filter section 60) can flow sequentially through the non-clean side 150 of the first filter section 60 and the first filter section 60. The system comprises a first air chamber 710, a first vent 701, a valve inlet 800, a valve outlet 801, and an air inlet channel 30. When the valve core 8 is in the first angle position, under the suction of the at least one suction motor, air (the air in the dust collection container 10 or the air in the non-clean side 160 of the second filter section 61) can flow sequentially through the non-clean side 160 of the second filter section 61, the second filter section 61, the second air chamber 711, the second vent 702, the valve inlet 800, the valve outlet 801, and the air inlet channel 30. The first filter section 60 and the first vent 701 are located on opposite sides of the first air chamber 710, and the first filter section 60 covers the side of the first air chamber 710 away from the first vent 701. The second filter section 61 and the second vent 702 are located on opposite sides of the second air chamber 711, and the second filter section 61 covers the side of the second air chamber 711 away from the second vent 702.

[0095] The vacuum cleaner 1 also includes a servo motor 17 for driving the valve core 8 to rotate. A rotating shaft 170 extends along the rotation axis of the valve core 8 and is connected to the valve core 8 for driving its rotation. The rotating shaft 170 and the valve outlet 801 are located at opposite ends of the valve core 8. The valve core 8 can rotate between a second angular position and a third angular position under the drive of the servo motor 17. The valve core 8 can rotate from the first angular position to the second angular position in the direction of rotation under the drive of the servo motor 17. The valve core 8 can rotate from the first angular position to the third angular position in the opposite direction of rotation under the drive of the servo motor 17. The servo motor 17 is located inside the head 12.

[0096] The housing 7 also includes a third air chamber 72, which is located on opposite sides of the valve core 8 along with the servo motor 17. The third air chamber 72 is located downstream of the valve duct 80, and the air inlet channel 30 connects to the third air chamber 72, which is connected between the valve duct 80 and the air inlet channel 30. When the valve core 8 is in the first angle position, under the suction of the at least one suction motor, air (air in the dust collection container 10 or air on the non-clean side 150 of the first filter section 60) can flow sequentially through the non-clean side 150 of the first filter section 60, the first filter section 60, the first air chamber 710, the first vent 701, the valve duct 80, the third air chamber 72, and the air inlet channel 30. When the valve core 8 is in the first angle position, under the suction of the at least one suction motor, air (air in the dust collection container 10 or air on the non-clean side 160 of the second filter section 61) can flow sequentially through the non-clean side 160 of the second filter section 61. 0. The second filter section 61, the second air chamber 711, the second vent 702, the valve duct 80, the third air chamber 72, and the air inlet channel 30; When the valve core 8 is in the second angle position, under the suction of the at least one suction motor, air (air in the dust collection container 10 or air in the non-clean side 160 of the second filter section 61) can flow sequentially through the non-clean side 160 of the second filter section 61, the second filter section 61, the second air chamber 711, the second vent 702, the valve duct 80, the third air chamber 72, and the air inlet channel 30; When the valve core 8 is in the third angle position, under the suction of the at least one suction motor, air (air in the dust collection container 10 or air in the non-clean side 150 of the first filter section 60) can flow sequentially through the non-clean side 150 of the first filter section 60, the first filter section 60, the first air chamber 710, the first vent 701, the valve duct 80, the third air chamber 72, and the air inlet channel 30. The air inlet 302 of the air inlet channel 30 is directly connected to the third air chamber 72, and the valve outlet 801 is directly connected to the third air chamber 72. The rotation axis of the valve core 8 is tilted downwards and backwards. The air inlet 302 of the air inlet channel 30 is located on the lower front side of the third air chamber 72, and the valve outlet 801 is located on the lower rear side of the third air chamber 72. The filter device 6 is tilted downwards and backwards.

[0097] The housing 7 includes a cylindrical portion 70, in which a valve core 8 is installed. The cylindrical portion 70 surrounds the rotation axis of the valve core 8, and the valve core 8 is coaxially arranged with the cylindrical portion 70. A backflush inlet 700 is an opening on the cylindrical portion 70, a first vent 701 is an opening on the cylindrical portion 70, and a second vent 702 is an opening on the cylindrical portion 70. The backflush inlet 700, the second vent 702, and the first vent 701 are distributed sequentially in the circumferential direction surrounding the valve core 8. The cylindrical portion 70 includes a separating band 703, which is located between the first vent 701 and the second vent 702, separating the first vent 701 and the second vent 702 in the circumferential direction of the cylindrical portion 70. The backflush inlet 700 and the separating band 703 are radially spaced opposite each other in the cylindrical portion 70. The first vent 701 and the second vent 702 are located on opposite radial sides of the backflow inlet 700.

[0098] The valve core 8 is inserted into the cylinder 70 from the end furthest from the air inlet channel 30 at opposite axial ends of the cylinder 70. The valve core 8 includes a first ring 81 and a second ring 82. The cylinder 70, the first ring 81, and the second ring 82 are coaxially arranged. The first ring 81 and the second ring 82 are located at opposite axial ends of the valve core 8 and are located inside the cylinder 70. The first ring 81 is located at one axial end of the cylinder 70, and the second ring 82 is located at the other axial end of the cylinder 70. The outer peripheral surfaces of the first ring 81 and the second ring 82 are in contact with the inner peripheral surface of the cylinder 70. When the valve core 8 rotates, the outer peripheral surfaces of the first ring 81 and the second ring 82 slide against the inner peripheral surface of the cylinder 70. The first ring 81 is adjacent to the servo motor 17, and the valve outlet 801 is formed by the second ring 82. The second ring 82 is closer to the air inlet channel 30 than the first ring 81.

[0099] The valve core 8 includes a first side 830 and a second side 840, which extend along the axial direction of the valve core 8. The first side 830 and the second side 840 are spaced apart in the circumferential direction of the valve core 8. The valve inlet 800 of the valve duct 80 is formed between the first side 830 and the second side 840. When the valve core 8 is in a first angle position, the first side 830 is located on the side of the first vent 701 away from the partition 703, and the second side 840 is located on the side of the second vent 702 away from the partition 703. As the valve core 8 rotates from the first angle position to the second angle position in the direction of rotation, the first side 830 rotates from the side of the first vent 701 away from the partition 703 to the partition 703, so that the first vent 701 and the backflow inlet 700 are no longer isolated by the valve core 8, thereby connecting the first vent 701 and the backflow inlet 700. Reversing the rotation direction from the first angle position to the third angle position, the second side 840 rotates from the side of the second vent 702 away from the separator 703 to the separator 703, so that the second vent 702 and the backflow inlet 700 are no longer isolated by the valve core 8, thus connecting the second vent 702 and the backflow inlet 700. This design is simple and effective, cleverly achieving air duct switching. When the valve core 8 is in the first angle position, the first side 830 and the second side 840 are located radially inside the cylinder 70. When the valve core 8 is in the second angle position, the first side 830 is located radially inside the separator 703. When the valve core 8 is in the second angle position, the second side 840 is located radially inside the cylinder 70. When the valve core 8 is in the third angle position, the second side 840 is located radially inside the separator 703. When the valve core 8 is in the third angle position, the first side 830 is located radially inside the cylinder 70.

[0100] More specifically, when the valve core 8 is in the first angular position, the first side 830 and the second side 840 are located radially inside the cylindrical portion 70 and abut against the cylindrical portion 70; when the valve core 8 is in the second angular position, the first side 830 is located radially inside the separating band 703 and abuts against the separating band 703; when the valve core 8 is in the second angular position, the second side 840 is located radially inside the cylindrical portion 70 and abuts against the cylindrical portion 70; when the valve core 8 is in the third angular position, the second side 840 is located radially inside the separating band 703 and abuts against the separating band 703; when the valve core 8 is in the third angular position, the first side 830 is located radially inside the cylindrical portion 70 and abuts against the cylindrical portion 70.

[0101] The valve core 8 includes a first baffle 83 and a second baffle 84, which are spaced apart and opposite to each other in the circumferential direction of the valve core 8. A first side 830 forms the outer side of the first baffle 83, and a second side 840 forms the outer side of the second baffle 84. When the valve core 8 is in a first angle position, the first baffle 83 blocks the flow between the first vent 701 and the backflow inlet 700; when the valve core 8 is in the first angle position, the second baffle 84 blocks the flow between the second vent 702 and the backflow inlet 700. Between the air inlets 700; as the valve core 8 rotates from the first angle position to the second angle position, the first baffle 83 rotates from the side of the first air inlet 701 away from the separator 703 to the separator 703, so that the first air inlet 701 and the backflow inlet 700 are not blocked by the first baffle 83, thus the first air inlet 701 and the backflow inlet 700 are connected; when the valve core 8 is in the second angle position, the second baffle 84 blocks the second air inlet 702 and the backflow inlet 700. As the valve core 8 rotates from the first angle position to the third angle position, the second baffle 84 rotates from the side of the second vent 702 away from the separator 703 to the separator 703, so that the second vent 702 and the backflow inlet 700 are no longer blocked by the second baffle 84, thus connecting the second vent 702 and the backflow inlet 700; when the valve core 8 is in the third angle position, the second baffle 84 blocks the second vent 702 and the backflow inlet 700; at the valve core 8 When the valve core 8 is in the first angular position, the first baffle 83 and the second baffle 84 are located radially inside the cylindrical portion 70; when the valve core 8 is in the second angular position, the first baffle 83 is located radially inside the separating band 703; when the valve core 8 is in the second angular position, the second baffle 84 is located radially inside the cylindrical portion 70; when the valve core 8 is in the third angular position, the second baffle 84 is located radially inside the separating band 703; when the valve core 8 is in the third angular position, the first baffle 83 is located radially inside the cylindrical portion 70. The first baffle 83 and the second baffle 84 are both straight strips, and the first baffle 83 and the second baffle 84 are both flat straight strips. The first side 830 and the second side 840 are parallel to the rotation axis of the valve core 8, respectively; the first baffle 83 and the second baffle 84 are parallel to the rotation axis of the valve core 8, respectively; the inner and outer sides of the first baffle 83 and the rotation axis of the valve core 8 are all located in the radial direction of the valve core 8, and the inner and outer sides of the second baffle 84 and the rotation axis of the valve core 8 are all located in the radial direction of the valve core 8.

[0102] More specifically, when the valve core 8 is in the first angular position, the first stop wall 83 and the second stop wall 84 are located radially inside the cylindrical portion 70 and abut against the cylindrical portion 70, which helps to inhibit air leakage between the first stop wall 83, the second stop wall 84 and the cylindrical portion 70; when the valve core 8 is in the second angular position, the first stop wall 83 is located radially inside the partition belt 703 and abuts against the partition belt 703, which helps to inhibit air leakage between the first stop wall 83 and the partition belt 703; when the valve core 8 is in the second angular position, the second stop wall 84 is located radially inside the cylindrical portion 70 and abuts against the cylindrical portion 70, which helps to inhibit air leakage between the second stop wall 84 and the cylindrical portion 70; when the valve core 8 is in the third angular position, the second stop wall 84 is located radially inside the partition belt 703 and abuts against the partition belt 703, which helps to inhibit air leakage between the second stop wall 84 and the partition belt 703; when the valve core 8 is in the third angular position, the first stop wall 83 is located radially inside the cylindrical portion 70 and abuts against the cylindrical portion 70, which helps to inhibit air leakage between the first stop wall 83 and the cylindrical portion 70.

[0103] The valve core 8 can rotate a first angle along the rotation direction and rotate from the first angular position to the second angular position, and the valve core 8 can rotate a second angle against the rotation direction and rotate from the first angular position to the third angular position. The first angle is between 30 degrees and 60 degrees, the second angle is between 30 degrees and 60 degrees, and the first angle is equal to the second angle; optionally, the first angle is 45 degrees or 50 degrees. The first stop wall 83 is integrally connected to the first ring portion 81 and the second ring portion 82, and the second stop wall 84 is integrally connected to the first ring portion 81 and the second ring portion 82. Based on the rotation axis of the valve core 8, the outer diameters of the first stop wall 83, the second stop wall 84, the first ring portion 81, and the second ring portion 82 are equal.

[0104] The housing 7 includes a partition wall 73 that extends outward from the cylindrical portion 70. The partition wall 73 at least partially extends radially outward integrally from the partition belt 703. The partition wall 73 separates the first air chamber 710 and the second air chamber 711. The partition wall 73 extends along the direction away from the rotation axis of the valve core 8 to the boundary between the first filter portion 60 and the second filter portion 61, and the partition wall 73 abuts against the boundary portion between the first filter portion 60 and the second filter portion 61; the filtering device 6 includes a flexible frame 62 that is connected to the first filter portion 60 and the second filter portion 61. The flexible frame 62 is in the shape of a "day" character. The flexible frame 62 includes a central flexible cross beam 620. In the radial direction of the cylindrical portion 70, the backflush air inlet 700, the partition belt 703, the partition wall 73, and the flexible cross beam 620 are arranged in sequence; the partition wall 73 abuts against the flexible cross beam 620, and the flexible cross beam 620 constitutes the boundary portion between the first filter portion 60 and the second filter portion 61. The flexible frame 62 is hermetically abutted against the housing 7, playing a sealing role between the filtering device 6 and the housing 7.

[0105] In this embodiment, the filter device 6 is a single plate filter, and the first filter section 60 and the second filter section 61 are formed by folding HEPA filter paper. In other embodiments, the first filter section 60 and the second filter section 61 may also be a single plate filter or a single cartridge filter, thereby forming a dual filter. Filters are very common in vacuum cleaners, and users can choose according to their needs.

[0106] Valve core 8 includes a circumferential baffle 85 integrally connected to a first baffle 83 and a second baffle 84. The circumferential baffle 85 extends from the inner side 831 of the first baffle 83, around the rotation axis of the valve core 8, to the inner side 841 of the second baffle 84. A cylindrical portion 70 is spaced apart from the circumferential baffle 85. A first reverse flow duct 90 and a second reverse flow duct 91 are formed between the cylindrical portion 70, the circumferential baffle 85, and the first baffle 83. When the valve core 8 is in the second angle position, the cylindrical portion 70 is located in the first passage... The gap between the portion of the cylinder wall between the vent 701 and the backflow inlet 700, and between the circumferential baffle 85 and the first baffle 83, forms a first backflow duct 90 connecting the first vent 701 and the backflow inlet 700. When the valve core 8 is in the third angle position, the gap between the portion of the cylinder wall of the cylinder 70 located between the second vent 702 and the backflow inlet 700, and between the circumferential baffle 85 and the second baffle 84, forms a second backflow duct 91 connecting the second vent 702 and the backflow inlet 700. The inner side 831 of the first baffle 83 and the inner side 841 of the second baffle 84 extend along the axial direction of the valve core 8.

[0107] The valve core 8 is a single integrally formed part. The valve core 8 also includes a first baffle 86 and a second baffle 87, which are axially opposite to each other. The first baffle 86 is integrally connected to the first ring portion 81 and the circumferential baffle wall 85, extending radially outward from one end of the circumferential baffle wall 85 to the first ring portion 81. The second baffle 87 is integrally connected to the second ring portion 82 and the circumferential baffle wall 85, extending radially outward from the opposite end of the circumferential baffle wall 85. One end extends radially outward to the second ring portion 82; the first baffle 86 and the second baffle 87 are perpendicular to the rotation axis of the valve core 8; the first baffle 86 and the second baffle 87 are spaced apart from each other axially in the valve core 8; the valve core 8 includes an annular flange 88 and a connecting portion 890 connecting the rotating shaft 170 of the servo motor 17. The annular flange 88 extends radially outward from the second ring portion 82 and can block the outside of the cylindrical portion 70 to prevent the valve core 8 from being excessively inserted into the cylindrical portion 70. The outer end of the valve core 8 also has a demolding groove 891, which facilitates demolding when molding the first baffle 86. The demolding groove 891 and the first baffle 86 are in a corresponding arc shape. The connecting portion 890 is a central column. The housing 7 constitutes a single integrally molded part. The cross-section of the circumferential baffle wall 85 (the corresponding section is perpendicular to the rotation axis of the valve core 8) is an arc, and the rotation axis of the valve core 8 constitutes the central axis of the circumferential baffle wall 85.

[0108] When the valve core 8 is in the first angle position, under the suction of one of the first suction motor 20 and the second suction motor 21, air (the air in the dust collection container 10 or the air in the non-clean side 150 of the first filter section 60) can flow sequentially through the non-clean side 150 of the first filter section 60, the first filter section 60, the clean side 151 of the first filter section 60, the first vent 701, the valve duct 80, the air inlet channel 30, the first duct 31, and the second duct 32, and interact with the air in the first suction motor 20 and the second suction motor 21. One of the suction motors 21 corresponds to one of the air ducts, and air (the air in the dust collection container 10 or the air in the non-clean side 160 of the second filter section 61) can flow sequentially through the non-clean side 160 of the second filter section 61, the second filter section 61, the clean side 161 of the second filter section 61, the second vent 702, the valve air duct 80, the air inlet channel 30, the first air duct 31, and the second air duct 32, which corresponds to one of the first suction motors 20 and the second suction motor 21.

[0109] When the valve core 8 is in the second angle position, under the suction of one of the first suction motor 20 and the second suction motor 21, air (air in the dust collection container 10 or air on the non-clean side 160 of the second filter section 61) can flow sequentially through the non-clean side 160 of the second filter section 61, the second filter section 61, the clean side 161 of the second filter section 61, the second vent 702, the valve duct 80, the air inlet duct 30, the first duct 31 and the second duct 32, one of the ducts corresponding to one of the first suction motor 20 and the second suction motor 21. Air (air outside the backflow inlet 700) can also flow sequentially through the backflow inlet 700, the first vent 701, the clean side 151 of the first filter section 60, the first filter section 60, and the non-clean side 150 of the first filter section 60.

[0110] When the valve core 8 is in the third angle position, under the suction of one of the first suction motor 20 and the second suction motor 21, air (air in the dust collection container 10 or air on the non-clean side 150 of the first filter section 60) can flow sequentially through the non-clean side 150 of the first filter section 60, the first filter section 60, the clean side 151 of the first filter section 60, the first vent 701, the valve duct 80, the air inlet channel 30, the first duct 31, and the second duct 32, corresponding to one of the air ducts of the first suction motor 20 and the second suction motor 21. Air (air outside the backflow inlet 700) can also flow sequentially through the backflow inlet 700, the second vent 702, the clean side 161 of the second filter section 61, the second filter section 61, and the non-clean side 160 of the second filter section 61.

[0111] When the valve core 8 is in the second angle position, under the suction of one of the first suction motor 20 and the second suction motor 21, air (air in the dust collection container 10 or air on the non-clean side 160 of the second filter section 61) can flow sequentially through the non-clean side 160 of the second filter section 61, the second filter section 61, the clean side 161 of the second filter section 61, the second vent 702, the valve duct 80, the air inlet channel 30, the first duct 31 and the second duct 32, one of the ducts corresponding to one of the first suction motor 20 and the second suction motor 21. Air (air outside the backflow inlet 700) can also flow sequentially through the backflow inlet 700, the first backflow duct 90, the first vent 701, the clean side 151 of the first filter section 60, the first filter section 60, and the non-clean side 150 of the first filter section 60.

[0112] When the valve core 8 is in the third angle position, under the suction of one of the first suction motor 20 and the second suction motor 21, air (air in the dust collection container 10 or air on the non-clean side 150 of the first filter section 60) can flow sequentially through the non-clean side 150 of the first filter section 60, the first filter section 60, the clean side 151 of the first filter section 60, the first vent 701, the valve duct 80, the air inlet channel 30, the first duct 31, and the second duct 32, corresponding to one of the air ducts of the first suction motor 20 and the second suction motor 21. Air (air outside the backflow inlet 700) can also flow sequentially through the backflow inlet 700, the second backflow duct 91, the second vent 702, the clean side 161 of the second filter section 61, the second filter section 61, and the non-clean side 160 of the second filter section 61.

[0113] When the vacuum cleaner 1 is turned off, the valve core 8 will return to the first angle position, or when the vacuum cleaner 1 is started, the valve core 8 will return to the first angle position. During the operation of the vacuum cleaner 1, when the filter device 6 needs to be cleared of blockage, the blockage clearing button 18 is triggered, and the servo motor 17 starts working. Driven by the servo motor 17, the valve core 8 first rotates from the first angle position to the second angle position in the direction of rotation. The valve core 8 remains in the second angle position for a certain period of time (e.g., 2 seconds), thereby clearing the blockage of the first filter section 60 once. Then, driven by the servo motor 17, the valve core 8 rotates from the second angle position in the opposite direction of rotation. When the rotation direction is turned to the third angle position, the valve core 8 remains in the third angle position for a certain period of time (e.g., 2 seconds) to clear the blockage of the second filter section 61. Then, driven by the servo motor 17, the valve core 8 rotates from the third angle position to the second angle position in the same rotation direction to clear the blockage of the first filter section 60 again. The above-mentioned clearing of the blockage of the first filter section 60 and the second filter section 61 can be repeated multiple times. After the first filter section 60 and the second filter section 61 are cleaned, the valve core 83 returns to the first angle position, and the vacuum cleaner 1 resumes normal suction operation.

Claims

1. A vacuum cleaner, characterized in that: The device includes a dust collection container, at least one suction motor, a first filter section, a housing, a valve core mounted on the housing, a valve duct, and an air inlet channel. The air inlet channel provides fluid communication between the valve duct and the at least one suction motor. The housing has a backflow inlet and a first vent corresponding to the first filter section. The valve core is at least partially located inside the housing and can rotate relative to the housing, allowing it to rotate to different angular positions relative to the housing. The valve core can rotate from a first angular position to a second angular position. When the valve core is in the first angular position, the first vent is connected to the valve duct. When the valve core is in the first angular position, it isolates the backflow inlet from the first vent. When the valve core is in the first angle position, the valve air duct is connected between the air inlet channel and the first vent. When the valve core is in the first angle position, under the suction of the at least one suction motor, air can flow sequentially through the non-clean side of the first filter section, the first filter section, the clean side of the first filter section, the first vent, the valve duct, and the air inlet channel. When the valve core is in the second angle position, the first vent is isolated from the valve duct; When the valve core is in the second angle position, the backflow inlet is connected to the first ventilation port; When the valve core is in the second angle position, under the negative pressure of the non-clean side of the first filter relative to the backflow inlet, air can flow sequentially through the backflow inlet, the first vent, the clean side of the first filter, the first filter, and the non-clean side of the first filter.

2. The vacuum cleaner according to claim 1, characterized in that: When the valve core is in the second angle position, a first reverse flow duct is formed between the valve core and the housing, connecting the backflow inlet and the first ventilation port; When the valve core is in the second angle position, under the negative pressure of the non-clean side of the first filter relative to the backflow inlet, air can flow sequentially through the backflow inlet, the first backflow duct, the first vent, the clean side of the first filter, the first filter, and the non-clean side of the first filter.

3. The vacuum cleaner according to claim 1, characterized in that: It also includes a second filter section, and the housing is also provided with a second vent corresponding to the second filter section. The first vent and the second vent are spaced apart in the circumferential direction around the rotation axis of the valve core. When the valve core is in the first angle position, the second vent and the first vent are respectively connected to the valve air duct. The valve duct can rotate along with the valve core to switch the connection and isolation between the valve duct and the first vent, and to switch the connection and isolation between the valve duct and the second vent. When the valve core is in the first angle position, the second vent is connected to the valve air duct; when the valve core is in the first angle position, the valve core isolates the backflow inlet from the second vent and the first vent. When the valve core is in the first angle position, the valve air duct is connected between the air inlet channel and the second vent and between the air inlet channel and the first vent. When the valve core is in the first angle position, under the suction of the at least one suction motor, air can flow sequentially through the non-clean side of the second filter section, the second filter section, the clean side of the second filter section, the second vent, the valve duct, and the air inlet channel. When the valve core is in the second angle position, the second vent is connected to the valve air duct; when the valve core is in the second angle position, the valve core isolates the backflow inlet from the second vent. When the valve core is in the second angle position, under the suction of the at least one suction motor, air can flow sequentially through the backflow inlet, the first vent, the clean side of the first filter, the first filter, and the non-clean side of the first filter. When the valve core is in the second angle position, under the suction of the at least one suction motor, air can flow sequentially through the non-clean side of the second filter section, the second filter section, the clean side of the second filter section, the second vent, the valve duct, and the air inlet channel. The valve core can rotate between a second angular position and a third angular position; the valve core can rotate from a first angular position to a second angular position in a direction of rotation; the valve core can rotate from a second angular position through a first angular position to a third angular position in the opposite direction of rotation. When the valve core is in the third angle position, the second vent is isolated from the valve duct; When the valve core is in the third angle position, the first vent is connected to the valve air duct; when the valve core is in the third angle position, the valve core isolates the backflow inlet from the first vent. When the valve core is in the third angle position, the backflow inlet is connected to the second vent. When the valve core is in the third angle position, under the suction of the at least one suction motor, air can flow sequentially through the non-clean side of the first filter section, the first filter section, the clean side of the first filter section, the first vent, the valve duct, and the air inlet channel. When the valve core is in the third angle position, under the suction of the at least one suction motor, air can flow sequentially through the backflow inlet, the second vent, the clean side of the second filter, the second filter, and the non-clean side of the second filter.

4. The vacuum cleaner according to claim 3, characterized in that: When the valve core is in the second angle position, under the suction of the at least one suction motor, air can flow sequentially through the backflow inlet, the first vent, the clean side of the first filter, the first filter, the non-clean side of the first filter, the non-clean side of the second filter, the second filter, the clean side of the second filter, the second vent, the valve duct, and the air inlet channel. When the valve core is in the third angle position, under the suction of the at least one suction motor, air can flow sequentially through the backflow inlet, the second vent, the clean side of the second filter, the second filter, the non-clean side of the second filter, the non-clean side of the first filter, the first filter, the clean side of the first filter, the first vent, the valve duct, and the air inlet channel.

5. The vacuum cleaner according to claim 3, characterized in that: When the valve core is in the second angle position, a first reverse flow duct is formed between the valve core and the housing, connecting the backflow inlet and the first ventilation port; When the valve core is in the third angle position, a second reverse flow duct is formed between the valve core and the housing, connecting the backflow inlet and the second vent. When the valve core is in the second angle position, under the suction of the at least one suction motor, air can flow sequentially through the backflow inlet, the first backflow duct, the first vent, the clean side of the first filter, the first filter, the non-clean side of the first filter, the non-clean side of the second filter, the second filter, the clean side of the second filter, the second vent, the valve duct, and the air inlet channel. When the valve core is in the third angle position, under the suction of the at least one suction motor, air can flow sequentially through the backflow inlet, the second backflow duct, the second vent, the clean side of the second filter, the second filter, the non-clean side of the second filter, the non-clean side of the first filter, the first filter, the clean side of the first filter, the first vent, the valve duct, and the air inlet channel.

6. The vacuum cleaner according to claim 3, characterized in that: The valve duct is at least partially formed inside the valve core, and the valve duct is at least partially surrounded by the valve core. When the valve core is in the second angle position, the backflow inlet and the first vent are connected because they are not isolated by the valve core. When the valve core is in the third angle position, the backflow inlet and the second vent are connected because they are not isolated by the valve core.

7. The vacuum cleaner according to claim 3, characterized in that: The valve duct has a valve inlet and a valve outlet. The valve inlet is located on one side of the valve core in the radial direction, and the valve outlet is located on one end of the valve core in the axial direction. The valve outlet is located downstream of the valve inlet and upstream of the air inlet channel. The valve inlet moves relative to the first vent and the second vent as the valve core rotates, so as to switch the position of the valve inlet and the first vent are aligned and connected and the position is offset and isolated, and to switch the position of the valve inlet and the second vent are aligned and connected and the position is offset and isolated. When the valve core is in the first angle position, the first vent is connected to the valve inlet; when the valve core is in the first angle position, the second vent is connected to the valve inlet; when the valve core is in the first angle position, under the suction of the at least one suction motor, air can flow sequentially through the non-clean side of the first filter section, the first filter section, the clean side of the first filter section, the first vent, the valve inlet, the valve outlet, and the air inlet channel. When the valve core is in the first angle position, under the suction of the at least one suction motor, air can flow sequentially through the non-clean side of the second filter section, the second filter section, the clean side of the second filter section, the second vent, the valve inlet, the valve outlet, and the air inlet channel. When the valve core is in the second angle position, the first vent is offset from the valve inlet and isolated from the valve duct. When the valve core is in the second angle position, the second vent is connected to the valve inlet; when the valve core is in the second angle position, under the suction of the at least one suction motor, air can flow sequentially through the non-clean side of the second filter section, the second filter section, the clean side of the second filter section, the second vent, the valve inlet, the valve outlet, and the air inlet channel. When the valve core is in the third angle position, the second vent is offset from the valve inlet and isolated from the valve duct. When the valve core is in the third angle position, the first vent is connected to the valve inlet; when the valve core is in the third angle position, under the suction of the at least one suction motor, air can flow sequentially through the non-clean side of the first filter section, the first filter section, the clean side of the first filter section, the first vent, the valve inlet, the valve outlet, and the air inlet channel.

8. The vacuum cleaner according to claim 7, characterized in that: The valve inlet forms a single opening on the valve core. The circumferential dimensions of the first vent and the second vent in the same direction around the valve core are smaller than the circumferential dimensions of the valve inlet.

9. The vacuum cleaner according to claim 7, characterized in that: The housing is provided with a first air chamber corresponding to the first filter section and a second air chamber corresponding to the second filter section. The first vent is a vent for external ventilation of the first air chamber, and the second vent is a vent for external ventilation of the second air chamber. When the valve core is in the first angle position, under the suction of the at least one suction motor, air can flow sequentially through the non-clean side of the first filter section, the first filter section, the first air chamber, the first vent, the valve inlet, the valve outlet, and the air inlet channel. When the valve core is in the first angle position, under the suction of the at least one suction motor, air can flow sequentially through the non-clean side of the second filter section, the second filter section, the second air chamber, the second vent, the valve inlet, the valve outlet, and the air inlet channel.

10. The vacuum cleaner according to claim 9, characterized in that: The first air chamber is located on the clean side of the first filter section, and the second air chamber is located on the clean side of the second filter section. The first filter section and the first vent are located on opposite sides of the first air chamber, and the first filter section is shielded on the side of the first air chamber away from the first vent. The second filter section and the second vent are located on opposite sides of the second air chamber, and the second filter section is shielded on the side of the second air chamber away from the second vent.

11. The vacuum cleaner according to claim 9, characterized in that: It also includes a servo motor for driving the valve core to rotate. The shaft of the servo motor is connected to the valve core, and the shaft of the servo motor and the valve outlet are located at opposite ends of the valve core. The valve core can rotate between a second angle position and a third angle position under the drive of the servo motor.

12. The vacuum cleaner according to claim 9, characterized in that: It also includes a servo motor for driving the valve core to rotate, and the housing is also provided with a third air chamber. The third air chamber and the servo motor are located on opposite sides of the valve core. The air inlet channel is connected to the third air chamber, which is located downstream of the valve air duct and is connected between the valve air duct and the air inlet channel. When the valve core is in the first angle position, under the suction of the at least one suction motor, air can flow sequentially through the non-clean side of the first filter section, the first filter section, the first air chamber, the first vent, the valve air duct, the third air chamber, and the air inlet channel. When the valve core is in the first angle position, under the suction of the at least one suction motor, air can flow sequentially through the non-clean side of the second filter section, the second filter section, the second air chamber, the second vent, the valve duct, the third air chamber, and the air inlet channel. When the valve core is in the second angle position, under the suction of the at least one suction motor, air can flow sequentially through the non-clean side of the second filter section, the second filter section, the second air chamber, the second vent, the valve duct, the third air chamber, and the air inlet channel. When the valve core is in the third angle position, under the suction of the at least one suction motor, air can flow sequentially through the non-clean side of the first filter section, the first filter section, the first air chamber, the first vent, the valve duct, the third air chamber, and the air inlet channel.

13. The vacuum cleaner according to claim 3, characterized in that: The housing includes a cylindrical section surrounding the rotation axis of the valve core, with the valve core and the cylindrical section coaxially arranged. A backflush inlet is a through-hole opened on the cylindrical section, a first vent is a through-hole opened on the cylindrical section, and a second vent is a through-hole opened on the cylindrical section. The backflush inlet, the second vent, and the first vent are distributed sequentially in the circumferential direction surrounding the valve core. The cylindrical section includes a separating band located between the first vent and the second vent, separating the first vent and the second vent in the circumferential direction of the cylindrical section. The backflush inlet and the separating band are radially spaced opposite each other in the cylindrical section.

14. The vacuum cleaner according to claim 13, characterized in that: The valve core is installed inside the cylindrical part. The valve core is inserted into the cylindrical part from the end of the cylindrical part away from the air inlet channel at opposite axial ends. The valve core includes a first ring and a second ring. The cylindrical part, the first ring and the second ring are coaxially arranged. The first ring and the second ring are located at opposite ends of the valve core in the axial direction. The first ring and the second ring are located inside the cylindrical part. The first ring is located inside one end of the cylindrical part in the axial direction, and the second ring is located inside the other end of the cylindrical part in the opposite axial direction. The outer peripheral surfaces of the first ring and the second ring are in contact with the inner peripheral surface of the cylindrical part. When the valve core rotates, the outer peripheral surfaces of the first ring and the second ring slide against the inner peripheral surface of the cylindrical part. The valve air duct has a valve outlet, which is surrounded by the second ring. The second ring is closer to the air inlet channel than the first ring.

15. The vacuum cleaner according to claim 13, characterized in that: The valve core includes a first side and a second side, which are spaced apart circumferentially. The valve inlet of the valve duct is formed between the first and second sides. When the valve core is in a first angular position, the first side is located on the side of the first vent furthest from the partition, and the second side is located on the side of the second vent furthest from the partition. As the valve core rotates from the first angular position to the second angular position in the direction of rotation, the first side rotates from the side of the first vent furthest from the partition to the partition, so that the first vent and the backflow inlet are no longer isolated by the valve core, thus connecting the first vent and the backflow inlet. As the valve core rotates against the direction of rotation... From the first angle position to the third angle position, the second side rotates from the side of the second vent away from the partition to the partition, so that the second vent and the backflush inlet are no longer isolated by the valve core, thus connecting the second vent and the backflush inlet; when the valve core is in the first angle position, the first side and the second side are located radially inside the cylinder; when the valve core is in the second angle position, the first side is located radially inside the partition; when the valve core is in the second angle position, the second side is located radially inside the cylinder; when the valve core is in the third angle position, the second side is located radially inside the partition; when the valve core is in the third angle position, the first side is located radially inside the cylinder.

16. The vacuum cleaner according to claim 15, characterized in that: When the valve core is in the first angle position, the first side and the second side are located radially inside the cylinder and abut against the cylinder; when the valve core is in the second angle position, the first side is located radially inside the partition and abut against the partition; when the valve core is in the second angle position, the second side is located radially inside the cylinder and abut against the cylinder; when the valve core is in the third angle position, the second side is located radially inside the partition and abut against the partition. When the valve core is in the third angle position, the first side is located radially inside the cylinder and abuts against the cylinder.

17. The vacuum cleaner according to claim 15, characterized in that: The valve core includes a first baffle and a second baffle, which are spaced apart and opposite each other in the circumferential direction of the valve core. A first side constitutes the outer side of the first baffle, and a second side constitutes the outer side of the second baffle. When the valve core is in a first angle position, the first baffle blocks the space between the first vent and the backflow inlet. When the valve core is in the first angle position, the second baffle blocks the space between the second vent and the backflow inlet. As the valve core rotates from the first angle position to the second angle position, the first baffle rotates from the side of the first vent away from the dividing strip to the dividing strip, causing the first vent and... The first vent is not blocked by the first baffle, thus connecting the first vent and the backflush inlet; when the valve core is in the second angle position, the second baffle blocks the second vent and the backflush inlet; as the valve core rotates from the first angle position to the third angle position, the second baffle rotates from the side of the second vent away from the separator to the separator, so that the second vent and the backflush inlet are not blocked by the second baffle, thus connecting the second vent and the backflush inlet; when the valve core is in the third angle position, the first baffle blocks the first vent and the backflush inlet.

18. The vacuum cleaner according to claim 17, characterized in that: When the valve core is in the first angular position, the first baffle and the second baffle are located on the radial inner side of the cylinder; when the valve core is in the second angular position, the first baffle is located on the radial inner side of the dividing strip. When the valve core is in the second angle position, the second baffle is located on the radial inner side of the cylinder; when the valve core is in the third angle position, the second baffle is located on the radial inner side of the separator; when the valve core is in the third angle position, the first baffle is located on the radial inner side of the cylinder; the first side and the second side are parallel to the rotation axis of the valve core; the first baffle and the second baffle are straight strips, and the first baffle and the second baffle are parallel to the rotation axis of the valve core.

19. The vacuum cleaner according to claim 13, characterized in that: The housing is provided with a first air chamber corresponding to the first filtering part, a second air chamber corresponding to the second filtering part, and a partition wall. The first air chamber is located on the clean side of the first filtering part, the second air chamber is located on the clean side of the second filtering part. The first vent forms the vent for the external ventilation of the first air chamber, and the second vent forms the vent for the external ventilation of the second air chamber; The partition wall extends outward from the cylindrical part, and at least part of the partition wall extends integrally radially outward from the partition band. The partition wall separates the first air chamber and the second air chamber, and the partition wall extends along the direction away from the rotation axis of the valve core to the boundary between the first filtering part and the second filtering part. The partition wall abuts against the boundary part between the first filtering part and the second filtering part; The vacuum cleaner includes a filtering device, the filtering device is installed in the housing, and the filtering device includes the first filtering part, the second filtering part, and a flexible frame. The flexible frame is connected to the first filtering part and the second filtering part. The flexible frame is in the shape of a "day", and the flexible frame includes a flexible cross beam in the middle. In the radial direction of the cylindrical part, the reverse flush air inlet, the partition band, the partition wall, and the flexible cross beam are arranged in sequence; The partition wall abuts against the flexible cross beam, and the flexible cross beam forms the boundary part between the first filtering part and the second filtering part.

20. The vacuum cleaner according to claim 17, characterized in that: The valve core includes a circumferential retaining wall, the circumferential retaining wall is integrally connected to the first retaining wall and the second retaining wall, the circumferential retaining wall bypasses the rotation axis of the valve core from the inner side edge of the first retaining wall and extends to the inner side edge of the second retaining wall, and the cylindrical part is spaced from the circumferential retaining wall; When the valve core is in the second angular position, the interval between the part of the cylindrical wall between the first vent and the reverse flush air inlet and the circumferential retaining wall and the first retaining wall forms a first reverse flow air duct connecting the first vent and the reverse flush air inlet; When the valve core is in the third angular position, the interval between the part of the cylindrical wall between the second vent and the reverse flush air inlet and the circumferential retaining wall and the second retaining wall forms a second reverse flow air duct connecting the second vent and the reverse flush air inlet.

21. The vacuum cleaner according to claim 20, characterized in that: It further includes a servo motor for driving the rotation of the valve core. The first ring part is adjacent to the servo motor. The valve core includes a first ring part and a second ring part. The first ring part and the second ring part are located at opposite ends in the axial direction of the valve core. The valve air duct has a valve outlet, and the valve outlet is surrounded by the second ring part; The valve core further includes a first baffle and a second baffle. The first baffle and the second baffle are opposite to each other in the axial direction of the valve core. The first baffle is integrally connected to the first ring part and the circumferential retaining wall, and the first baffle extends radially outward from one end of the circumferential retaining wall to the first ring part. The second baffle is integrally connected to the second ring part and the circumferential retaining wall, and the second baffle extends radially outward from the opposite end of the circumferential retaining wall to the second ring part; The first baffle and the second baffle are perpendicular to the rotation axis of the valve core; The valve core includes an annular flange and a connecting part connecting the rotating shaft of the servo motor. The annular flange extends radially outward from the second ring part, and the annular flange can block the outside of the cylindrical part.

22. The vacuum cleaner according to claim 21, characterized in that: It also includes a dust collection head, which includes at least one suction motor. The dust collection head is detachably mounted on the upper end of the dust collection container. The housing is located inside the dust collection head and is a single integrally formed part. The valve core is a single integrally formed part. The cross-section of the circumferential baffle is arc-shaped. The at least one suction motor includes a first suction motor and a second suction motor. The first suction motor and the second suction motor can be selected to perform suction work, and they cannot perform suction work at the same time.

23. The vacuum cleaner according to claim 3, characterized in that: The at least one suction motor includes a first suction motor and a second suction motor. The first suction motor and the second suction motor can be selected to perform suction operations, but not simultaneously. The vacuum cleaner also includes a first air duct corresponding to the first suction motor, a second air duct corresponding to the second suction motor, and a valve. The first air duct connects the first suction motor to the air inlet channel, and the second air duct connects the second suction motor to the air inlet channel. The valve can rotate under the suction of the first suction motor or under the suction of the second suction motor. The valve includes a first valve plate and a second valve plate. When the second suction motor is not working and under the suction of the first suction motor, the first valve plate does not close the first air duct, and the second valve plate closes the second air duct. When the first suction motor is not working and under the suction of the second suction motor, the first valve plate closes the first air duct, and the second valve plate does not close the second air duct. When the valve core is in the first angle position, under the suction of one of the first suction motors and the second suction motor, air can sequentially flow through the non-clean side of the first filter section, the first filter section, the clean side of the first filter section, the first vent, the valve duct, the air inlet channel, the first duct, and the second duct, one of which corresponds to one of the first suction motors and the second suction motor. Air can also sequentially flow through the non-clean side of the second filter section, the second filter section, the clean side of the second filter section, the second vent, the valve duct, the air inlet channel, the first duct, and the second duct, one of which corresponds to one of the first suction motors and the second suction motor. When the valve core is in the second angle position, under the suction of one of the first suction motor and the second suction motor, air can flow sequentially through the non-clean side of the second filter section, the second filter section, the clean side of the second filter section, the second vent, the valve duct, the air inlet channel, the first duct, and the second duct corresponding to one of the first suction motors and the second suction motor. Air can also flow sequentially through the backflow inlet, the first vent, the clean side of the first filter section, the first filter section, and the non-clean side of the first filter section. When the valve core is in the third angle position, under the suction of one of the first suction motor and the second suction motor, air can flow sequentially through the non-clean side of the first filter section, the first filter section, the clean side of the first filter section, the first vent, the valve duct, the air inlet channel, the first duct, and the second duct, one of which corresponds to one of the first suction motor and the second suction motor. Furthermore, air can flow sequentially through the backflow inlet, the second vent, the clean side of the second filter section, the second filter section, and the non-clean side of the second filter section.

24. The vacuum cleaner according to claim 23, characterized in that: As the valve rotates, the first valve plate and the second valve plate rotate synchronously. The first air duct has a first inlet and can be connected to the air intake channel through the first inlet. The second air duct has a second inlet and can be connected to the air intake channel through the second inlet. The first valve plate can close the first inlet and open relative to the first inlet, and the second valve plate can close the second inlet and open relative to the second inlet. When the second suction motor is not working and under the suction of the first suction motor, the second valve plate is in a closed state for the second inlet and the first valve plate is in a closed state relative to the first inlet, so that the airflow can flow through the air inlet channel, the first air duct, and the first suction motor in sequence. When the first suction motor is not working and under the suction of the second suction motor, the first valve plate is in a closed state for the first inlet and the second valve plate is in a closed state relative to the second inlet, so that the airflow can flow through the air inlet channel, the second air duct, and the second suction motor in sequence.

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