A vacuum cleaner

Abstract

This application provides a vacuum cleaner, comprising: a first valve for allowing air from an external gas environment to flow into a first air chamber through a first air inlet; a second air inlet for opening a second air inlet to allow air from an external gas environment to flow into a second air chamber through the second air inlet; a first pushing part that abuts against the first valve and is rotatable to push the first valve to open the first air inlet; a second pushing part that abuts against a second valve and is rotatable to push the second valve to open the second air inlet; a rotating shaft and a drive source; the drive source is connected to the rotating shaft, and the rotating shaft is fixedly connected to the first and second pushing parts; the drive source is used to drive the rotating shaft to rotate, thereby causing the first and second pushing parts to rotate, and thus pushing the first valve through the first pushing part, or pushing the second valve through the second pushing part. This achieves a change in airflow direction.

Description

Technical Field

[0001] This application relates to the field of cleaning, and more particularly to a vacuum cleaner. Background Technology

[0002] During operation, dust accumulates on the side of the filter opposite the dustbin, causing blockages in the airflow and reducing suction efficiency. Therefore, providing a quick and efficient method for cleaning the filter has become a pressing issue. Utility Model Content

[0003] This application aims to solve at least one of the above-mentioned problems by providing a vacuum cleaner that achieves self-cleaning of the vacuum cleaner filter by controlling the airflow path.

[0004] In a first aspect, this application provides a vacuum cleaner, comprising:

[0005] A first air chamber, a first valve, and a first air inlet; wherein, the first air inlet is disposed in the first air chamber; the first valve is disposed in conjunction with the first air chamber; the first valve is used to close the first air inlet, or the first valve is used to open the first air inlet, allowing air from the external gas environment to flow into the first air chamber through the first air inlet;

[0006] The system comprises a second air chamber, a second valve, and a second air inlet; wherein the second air inlet is located in the second air chamber; the second valve is configured in conjunction with the second air chamber; the second valve is used to close the second air inlet, or the second valve is used to open the second air inlet, allowing air from the external gas environment to flow into the second air chamber through the second air inlet;

[0007] The first pushing part is capable of abutting against the first valve; the first pushing part is capable of rotating to push the first valve to open the first air inlet.

[0008] The second actuating part is capable of abutting against the second valve; the second actuating part is capable of rotating to push the second valve to open the second air inlet.

[0009] A rotating shaft and a drive source; the drive source is connected to the rotating shaft, and the rotating shaft is fixedly connected to the first push part and the second push part; the drive source is used to drive the rotating shaft to rotate, so as to drive the first push part and the second push part to rotate through the rotating shaft, and then push the first valve through the first push part, or push the second valve through the second push part.

[0010] Preferably, the vacuum cleaner further includes a negative pressure source, which is connected to the first air chamber and the second air chamber respectively. The vacuum cleaner also includes a receiving cavity, which is connected to the negative pressure source through the first air chamber and / or the second air chamber; wherein,

[0011] The rotation axis is set in the initial position; wherein, the rotation axis can rotate counterclockwise or clockwise relative to the initial position; wherein,

[0012] In response to the counterclockwise rotation of the rotating shaft, the first pushing part abuts against the first valve and pushes the first valve to open the first air inlet; and causes the second valve to close the second air inlet; furthermore...

[0013] In response to the operation of the negative pressure source, gas enters the first air chamber from the external gas environment through the first air inlet, and then enters the receiving cavity through the first air chamber; and the gas flows from the receiving cavity to the negative pressure source through the second air chamber.

[0014] Preferably, the vacuum cleaner includes a middle cover and a dustbin; the middle cover covers the opening of the dustbin to form an enclosing cavity; the vacuum cleaner includes a first filter section and a second filter section, and the middle cover includes a first cover plate and a second cover plate, wherein,

[0015] The first air chamber is covered on the upper surface of the first cover plate, and the lower surface of the first cover plate covers the upper part of the first filter section; a first guide hole is provided through the upper and lower surfaces of the first cover plate, and the first air chamber is connected to the receiving cavity through the first guide hole and the first filter section.

[0016] The second air chamber is covered on the upper surface of the second cover plate, and the lower surface of the second cover plate covers the upper part of the second filter section; a second guide hole is provided through the upper and lower surfaces of the second cover plate, and the second air chamber communicates with the receiving cavity through the second guide hole and the second filter section; wherein,

[0017] In response to the counterclockwise rotation of the rotating shaft and the operation of the negative pressure source, gas enters the first air chamber from the external environment through the first air inlet, then passes through the first cover plate through the first guide hole, and enters the receiving cavity through the first filter section; and the gas flows from the receiving cavity through the second filter section, the second guide hole, and the second air chamber to the negative pressure source in sequence.

[0018] Preferably, the vacuum cleaner further includes a negative pressure source, which is connected to the first air chamber and the second air chamber respectively. The vacuum cleaner also includes a receiving cavity, which is connected to the negative pressure source through the first air chamber and / or the second air chamber; wherein,

[0019] The rotation axis is set in the initial position; wherein, the rotation axis can rotate counterclockwise or clockwise relative to the initial position; wherein,

[0020] In response to the clockwise rotation of the rotating shaft, the second pushing part abuts against the second valve and pushes the second valve to open the second air inlet; and causes the first valve to close the first air inlet; furthermore...

[0021] In response to the operation of the negative pressure source, gas enters the second air chamber from the external gas environment through the second air inlet, and then enters the containment cavity through the second air chamber; and the gas flows from the containment cavity through the first air chamber to the negative pressure source.

[0022] Preferably, the vacuum cleaner includes a middle cover and a dustbin; the middle cover covers the opening of the dustbin to form an enclosing cavity; the vacuum cleaner includes a first filter section and a second filter section, and the middle cover includes a first cover plate and a second cover plate, wherein,

[0023] The first air chamber is covered on the upper surface of the first cover plate, and the lower surface of the first cover plate covers the upper part of the first filter section; a first guide hole is provided through the upper and lower surfaces of the first cover plate, and the first air chamber is connected to the receiving cavity through the first guide hole and the first filter section.

[0024] The second air chamber is covered on the upper surface of the second cover plate, and the lower surface of the second cover plate covers the upper part of the second filter section; a second guide hole is provided through the upper and lower surfaces of the second cover plate, and the second air chamber communicates with the receiving cavity through the second guide hole and the second filter section; wherein,

[0025] In response to the clockwise rotation of the rotating shaft and the operation of the negative pressure source, gas enters the second air chamber from the external environment through the second air inlet, then passes through the second cover plate through the second guide hole, and enters the receiving cavity through the second filter section; and the gas flows from the receiving cavity through the first filter section, the first guide hole, and the first air chamber to the negative pressure source in sequence.

[0026] Preferably, with the rotating shaft in its initial position, the first valve closes the first air inlet, and the second valve closes the second air inlet; gas flows from the receiving cavity through the first air chamber to the negative pressure source, and gas flows from the receiving cavity through the second air chamber to the negative pressure source.

[0027] Preferably, the first pushing part includes a first sealing ring, and the second pushing part includes a second sealing ring, wherein:

[0028] The first sealing ring is disposed on the mating end face of the first valve relative to the first air inlet, and the first pushing part can be sealed and connected to the first air inlet through the first sealing ring to close the first air inlet;

[0029] The second sealing ring is disposed on the mating end face of the second valve relative to the second air inlet, and the second pushing part can be sealed and connected to the second air inlet through the second sealing ring to close the second air inlet;

[0030] A first actuating part is disposed above the first valve, and a second actuating part is disposed above the second valve; the movement path of the first valve is disposed between the first air inlet and the first cover plate; the movement path of the second valve is disposed between the second air inlet and the second cover plate; wherein,

[0031] In response to the rotating shaft being set to its initial position and rotating counterclockwise, and the operation of the negative pressure source, the first pushing part presses down the first valve, causing the first valve to move from the first air inlet toward the first cover plate until the first sealing ring separates from the first air inlet, thereby opening the first air inlet and connecting the first air chamber with the external gas environment; and the second valve is kept sealed to the second air inlet by the second sealing ring, so that the second air inlet remains closed.

[0032] Preferably, the first valve has a first upper limit position relative to the end face of the first cover plate; the first cover plate has a first lower limit position relative to the end face of the first valve, and the vacuum cleaner further includes:

[0033] The first spring is respectively sleeved on the first upper limit and the first lower limit; the first spring is kept in a compressed state and is arranged along the movement path of the first valve; the first spring is used to make the first sealing ring of the first valve abut against the first air inlet, so that the first valve closes the first air inlet.

[0034] Preferably, the middle cover and the first cover plate are integrally formed; the middle cover includes a first step, the first step is connected to the first cover plate, the first step is disposed below the first valve and is located on the movement path of the first valve;

[0035] In response to the rotating shaft being set in the initial position and rotating counterclockwise, the first valve moves from the first air inlet to the first cover plate until the lower edge of the first valve abuts against the first step.

[0036] Preferably, the first pushing part includes a first sealing ring, and the second pushing part includes a second sealing ring, wherein:

[0037] The first sealing ring is disposed on the mating end face of the first valve relative to the first air inlet, and the first pushing part can be sealed and connected to the first air inlet through the first sealing ring to close the first air inlet;

[0038] The second sealing ring is disposed on the mating end face of the second valve relative to the second air inlet, and the second pushing part can be sealed and connected to the second air inlet through the second sealing ring to close the second air inlet;

[0039] A first actuating part is disposed above the first valve, and a second actuating part is disposed above the second valve; the movement path of the first valve is disposed between the first air inlet and the first cover plate; the movement path of the second valve is disposed between the second air inlet and the second cover plate; wherein,

[0040] In response to the rotating shaft being set to the initial position and rotating clockwise, and the operation of the negative pressure source, the second pushing part presses down the second valve, causing the second valve to move from the second air inlet toward the second cover plate until the second sealing ring separates from the second air inlet, so that the second air inlet is opened, thereby allowing the second air chamber to communicate with the external gas environment; and the first valve is kept sealed to the first air inlet by the first sealing ring, so that the first air inlet is kept closed.

[0041] Preferably, the second valve has a second upper limit position relative to the end face of the second cover plate; the second cover plate has a second lower limit position relative to the end face of the second valve, and the vacuum cleaner further includes:

[0042] The second spring is respectively sleeved on the second upper limit position and the second lower limit position; the second spring is kept in a compressed state and is set along the movement path of the second valve; the second spring is used to make the second sealing ring of the second valve abut against the second air inlet, so that the second valve closes the second air inlet.

[0043] Preferably, the middle cover and the second cover plate are integrally formed; the middle cover includes a second step, the second step is connected to the second cover plate, the second step is disposed below the second valve and is located on the movement path of the second valve;

[0044] In response to the rotating shaft being set in the initial position and rotating clockwise, the second valve moves from the second air inlet to the second cover plate until the lower edge of the second valve abuts against the second step.

[0045] Preferably, the vacuum cleaner includes:

[0046] A filter is disposed throughout the middle cover and is divided into at least one first filter section and at least one second filter section.

[0047] Preferably, the vacuum cleaner includes:

[0048] A first fixing part, enclosed in a receiving cavity, is detachably disposed on the inner wall of the receiving cavity. The first fixing part is located below a first cover plate, and the first fixing part and the first cover plate form a first limiting groove. A first filter part is limited within the first limiting groove.

[0049] The second fixing part is contained within the receiving cavity and is detachably disposed on the inner wall of the receiving cavity. The second fixing part is disposed below the second cover plate, and the second fixing part and the second cover plate form a second limiting groove; the second filter part is limited within the second limiting groove.

[0050] Preferably, the vacuum cleaner includes a fixed bracket; the fixed bracket is contained within a receiving cavity, the fixed bracket is detachably disposed on the middle cover, and the fixed bracket is divided into at least one first fixing part and at least one second fixing part.

[0051] Preferably, the vacuum cleaner further includes an air duct; one side of the air duct is connected to a negative pressure source, and the first air chamber and the second air chamber are respectively connected to the other side of the air duct; the air duct and the first air chamber are used to enable the negative pressure source to communicate with the gas of the first filter section, and the air duct and the second air chamber are used to enable the negative pressure source to communicate with the gas of the second filter section.

[0052] Preferably, the first air inlet and the second air inlet are disposed on the same plane, the first air chamber is disposed between the first filter and the negative pressure source, the second air chamber is disposed between the second filter and the negative pressure source, the first air inlet is disposed between the first filter and the negative pressure source, and the second air inlet is disposed between the second filter and the negative pressure source.

[0053] Preferably, the negative pressure source is a suction motor; the suction motor is partially enclosed in the middle cover, the air inlet of the suction motor is located at the bottom of the suction motor, the air inlet is connected to the air duct, and communicates with the gas in the first air chamber or the second air chamber through the air duct; the suction motor is provided with an exhaust duct, the air outlet of the exhaust duct is located on the side of the vacuum cleaner, and the direction of the air outlet is parallel to the working surface of the vacuum cleaner and away from the vacuum cleaner; the gas enters the suction motor through the air inlet and flows to the air outlet through the exhaust duct.

[0054] Preferably, the negative pressure source is a suction motor; the suction motor is partially enclosed in the middle cover; the suction motor is equipped with a heat dissipation structure, the heat dissipation duct inlet of the heat dissipation structure is located at the top of the suction motor, the heat dissipation duct inlet is connected to the main heat dissipation duct, and extends to the heat dissipation duct outlet through the main heat dissipation duct; the heat dissipation duct outlet is located on the other side of the vacuum cleaner opposite to the air outlet; and the orientation of the heat dissipation duct outlet is parallel to the working surface of the vacuum cleaner and away from the air outlet; gas enters the suction motor through the heat dissipation duct inlet and flows to the heat dissipation duct outlet through the main heat dissipation duct; wherein, the main heat dissipation duct and the exhaust duct are set independently, and the main heat dissipation duct is located above the exhaust duct.

[0055] Preferably, the dustbin also includes a suction port; the dustbin is connected to the external gas environment through the suction port; so that the gas responds to the negative pressure source and enters the dustbin through the suction port.

[0056] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0057] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0058] Figure 1 This is a schematic diagram showing the assembly state of some components of the vacuum cleaner disclosed in this application;

[0059] Figure 2 For this application Figure 1 A schematic diagram showing the relative horizontal positions of the components.

[0060] Figure 3 This is a structural schematic diagram of a fixed bracket disclosed in this application;

[0061] Figure 4 This is a schematic diagram of the structure of a filter section disclosed in this application;

[0062] Figure 5 This is a schematic diagram of the assembly relationship disclosed in this application;

[0063] Figure 6 This is a schematic diagram of the first and second air inlets disclosed in this application;

[0064] Figure 7 This is a schematic diagram of the structure of the first valve and the second valve disclosed in this application;

[0065] Figure 8 This is another assembly relationship diagram disclosed in this application;

[0066] Figure 9 , Figure 9a as well as Figure 9b This application discloses a schematic diagram and a partial enlarged view of the structure of the cover.

[0067] Figure 10 This is a schematic diagram and a partial cross-sectional view of the vacuum cleaner disclosed in this application;

[0068] Figure 11 This is a schematic diagram and a partial cross-sectional view of another vacuum cleaner disclosed in this application;

[0069] Figure 12 This is a schematic diagram of the airflow path of the second filter section of the filter section disclosed in this application in the self-cleaning state.

[0070] Figure 13 This is a schematic diagram of the airflow path of the first filter section of the filter section disclosed in this application in a self-cleaning state.

[0071] Figure 14a and Figure 14b This is a schematic diagram of some components of the vacuum cleaner in its initial state as disclosed in this application;

[0072] Figure 15a and Figure 15b This is a schematic diagram of some components of the vacuum cleaner disclosed in this application, which differ from the initial state.

[0073] Figure 16a and Figure 16b This is a schematic diagram of another component of the vacuum cleaner disclosed in this application, which differs from its initial state;

[0074] Figure 17 This is a schematic diagram of the vacuum cleaner structure disclosed in this application. Detailed Implementation

[0075] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the protection scope of this utility model.

[0076] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0077] In a first aspect, this application provides a vacuum cleaner, comprising:

[0078] The system comprises a first air chamber 11, a first valve 21, and a first air inlet 111; wherein the first air inlet 111 is disposed in the first air chamber 11; the first valve 21 is disposed in conjunction with the first air chamber 11; the first valve 21 is used to close the first air inlet 111, or the first valve 21 is used to open the first air inlet 111, so that air from the external gas environment flows into the first air chamber 11 through the first air inlet 111;

[0079] The system comprises a second air chamber 12, a second valve 22, and a second air inlet 121; wherein the second air inlet 121 is disposed in the second air chamber 12; the second valve 22 is disposed in conjunction with the second air chamber 12; the second valve 22 is used to close the second air inlet 121, or the second valve 22 is used to open the second air inlet 121, so that air from the external gas environment flows into the second air chamber 12 through the second air inlet 121;

[0080] The first pusher 81 is capable of abutting against the first valve 21; the first pusher 81 is capable of rotating to push the first valve 21 to open the first air inlet 111.

[0081] The second pusher 82 is capable of abutting against the second valve 22; the second pusher 82 is capable of rotating to push the second valve 22 to open the second air inlet 121.

[0082] A rotating shaft 83 and a drive source 84 are provided. The drive source 84 is connected to the rotating shaft 83, and the rotating shaft 83 is fixedly connected to the first push part 81 and the second push part 82. The drive source 84 is used to drive the rotating shaft 83 to rotate, so as to drive the first push part 81 and the second push part 82 to rotate through the rotating shaft 83, and then push the first valve 21 through the first push part 81, or push the second valve 22 through the second push part 82.

[0083] Specifically, refer to Figure 1 and Figure 2 The vacuum cleaner provided in this application includes a first air chamber 11, a first valve 21, and a first air inlet 111; a second air chamber 12, a second valve 22, and a second air inlet 121. The first air inlet 111 is located in the first air chamber 11, and the first valve 21 controls the opening and closing of the first air inlet 111, thereby controlling the flow of outside air into the first air chamber 11. Similarly, the second air inlet 121 is located in the second air chamber 12, and the second valve 22 controls the opening and closing of the second air inlet 121, thereby controlling the flow of outside air into the second air chamber 12. A first pushing part 81 is provided on the side of the first valve 21 opposite to the first air chamber 11. The first pushing part 81 is used to control and push the first valve 21, causing a change in the relative position of the first valve 21 with respect to the first air inlet 111, thereby controlling the opening and closing of the first air inlet 111. Similarly, a second actuating part 82 is provided on the side of the second valve 22 opposite to the second air chamber 12. The second actuating part 82 is used to control the actuation of the second valve 22, causing a change in the relative position of the second valve 22 with respect to the second air inlet 121, thereby controlling the opening and closing of the second air inlet 121. The first actuating part 81 and the second actuating part 82 both rotate around the same axis, and a rotating shaft 83 is provided on the axis of rotation. The rotating shaft 83 also rotates around the axis of rotation of the first actuating part 81 and the second actuating part 82. The vacuum cleaner is also provided with a drive source 84, which is fixedly connected to the rotating shaft 83. The rotating shaft 83 responds to the power output of the drive source 84, and controls the rotation angle of the first actuating part 81 and the second actuating part 82 by rotating, thereby indirectly controlling the position of the first valve 21 relative to the first air inlet 111, and indirectly controlling the position of the second valve 22 relative to the second air inlet 121.

[0084] Specifically, refer to Figures 12 to 16. The first pushing part 81 and the second pushing part 82 are configured as a cam structure. In response to the rotation of the first pushing part 81, with the rotation axis 83 of the first pushing part 81 as a reference, when the end face of the first pushing part 81 furthest from the rotation axis 83 of the first pushing part 81 abuts against the first valve 21, the first valve 21 is pressed down to its deepest point relative to the first air chamber 11. At this time, the airflow entering the first air inlet is at its maximum, ensuring that a sufficiently large airflow passes through the first air chamber 11 and is then blown towards the first filter part 41. Similarly, in response to the rotation of the second pushing part 82, with the rotation axis 83 of the second pushing part 82 as a reference, when the end face of the second pushing part 82 furthest from the rotation axis 83 of the second pushing part 82 abuts against the second valve 22, the second valve 22 is pressed down to its deepest point relative to the second air chamber 12. At this time, the airflow entering the second air inlet is at its maximum, ensuring that a sufficiently large airflow passes through the second air chamber 12 and is then blown towards the second filter part 42.

[0085] In some embodiments, the vacuum cleaner further includes a negative pressure source 50, which is connected to the first air chamber 11 and the second air chamber 12 respectively. The vacuum cleaner also includes a receiving cavity 30, which is connected to the negative pressure source 50 through the first air chamber 11 and / or the second air chamber 12.

[0086] The rotating shaft 83 is set in the initial position; wherein, the rotating shaft 83 is capable of rotating counterclockwise or clockwise relative to the initial position; wherein,

[0087] In response to the counterclockwise rotation of the rotating shaft 83, the first pushing part 81 abuts against the first valve 21 and pushes the first valve 21 to open the first air inlet 111; and causes the second valve 22 to close the second air inlet 121; furthermore...

[0088] In response to the operation of the negative pressure source 50, gas enters the first air chamber 11 from the external gas environment through the first air inlet 111, and then enters the receiving cavity 30 through the first air chamber 11; and the gas flows from the receiving cavity 30 to the negative pressure source 50 through the second air chamber 12.

[0089] Specifically, referring to Figure 14, the rotation shaft 83 is currently positioned at its initial position to define the first pushing part 81 as fixed relative to the first valve 21, and to define the second pushing part 82 as fixed relative to the second valve 22. (Refer to...) Figure 16a and Figure 16bThe rotating shaft 83 can rotate counterclockwise relative to its initial position in response to the power output of the drive source 84. At this time, the end face of the first pushing part 81 abuts against the first valve 21 and adapts to the curved shape of the abutment between the first pushing part 81 and the first valve 21, continuously pressing down on the first valve 21, so that the distance between the first valve 21 and the first air inlet 111 increases; at the same time, the end face of the second pushing part 82 begins to move away from the second valve 22, so as to keep the force of the second pushing part 82 on the second valve 22 continuously decreasing, or so that the second pushing part 82 and the second valve 22 do not interact, thereby keeping the second valve 22 located at the second air inlet 121, ensuring the closure of the second air inlet 121. Further, referring to Figure 13 The negative pressure source 50 performs a suction operation, generating an airflow as shown by arrow a22. The airflow enters the first air chamber 11 from the first air inlet 111 and further passes through the first filter section 41 into the receiving cavity 30, as shown by arrows a25 to a24. The second air inlet 121 is closed, and the airflow, as shown by arrows a26 to a23, flows from the receiving cavity 30 through the second filter section 42, the second air chamber 12, and the air passage 70 (described in detail later) to the negative pressure source 50, thereby changing the direction of the airflow in the first air chamber 11. This provides the first filter section 41 with a backflushing airflow from a25 to a24.

[0090] In some embodiments, the vacuum cleaner includes a middle cover 32 and a dustbin 31; the middle cover 32 covers the opening of the dustbin 31 to form an enclosing cavity; the vacuum cleaner includes a first filter section 41 and a second filter section 42, and the middle cover 32 includes a first cover plate 321 and a second cover plate 322, wherein,

[0091] The first air chamber 11 is covered on the upper surface of the first cover plate 321, and the lower surface of the first cover plate 321 is covered on the top of the first filter section 41; a first guide hole 3211 is provided through the upper and lower surfaces of the first cover plate 321, and the first air chamber 11 is connected to the receiving cavity 30 through the first guide hole 3211 and the first filter section 41.

[0092] The second air chamber 12 is disposed on the upper surface of the second cover plate 322, and the lower surface of the second cover plate 322 is disposed above the second filter section 42; a second guide hole 3221 is provided through the upper and lower surfaces of the second cover plate 322, and the second air chamber 12 communicates with the receiving cavity 30 through the second guide hole 3221 and the second filter section 42; wherein,

[0093] In response to the counterclockwise rotation of the rotating shaft 83 and the operation of the negative pressure source 50, gas enters the first air chamber 11 from the external environment through the first air inlet 111, then passes through the first guide hole 3211 through the first cover plate 321, and enters the receiving cavity 30 through the first filter section 41; and the gas flows from the receiving cavity 30 through the second filter section 42, the second guide hole 3221, and the second air chamber 12 to the negative pressure source 50.

[0094] Specifically, refer to Figure 13 , 14a 14b and 16, the rotating shaft 83 rotates counterclockwise from its initial position, causing the first pushing part 81 to abut against and push the first valve 21 away from the first air inlet 111, and keeping the second valve 22 closed to the second air inlet 121. The negative pressure source 50 provides a negative pressure environment to the upper surface of the second cover plate 322 through the second air chamber 12. The second guide hole 3221 provided on the second cover plate 322 can conduct the negative pressure environment to the upper surface of the second filter part 42, thereby ensuring that the gas in the receiving cavity 30 is drawn through the second filter part 42, maintaining a low pressure state in the receiving cavity 30 relative to the external gas environment. At this time, the gas flows into the first air chamber 11 from the first air inlet 111 and flows to the first cover plate 321 connected to the first air chamber 11. The first cover plate 321 is provided with a first guide hole 3211. Gas, under pressure, passes through the first guide hole 3211 and enters the first filter section 41. Due to the material properties of the filter section, the gas further flows through the first filter section 41 to the receiving cavity 30. At this time, dust, debris, etc. accumulated on the surface of the first filter section 41 relative to the receiving cavity 30 are blown off in response to the air flowing through the first filter section 41 to the receiving cavity 30, thus cleaning the first filter section 41.

[0095] Specifically, refer to Figure 9a The first guide hole 3211 is configured to be thicker on one side relative to the first filter section 41 and thinner on one side relative to the first cover plate 321, which increases the gas range of the first air chamber 11 in the direction of the first filter section 41 and improves the cleaning effect on the first filter section 41.

[0096] In some embodiments, the vacuum cleaner further includes a negative pressure source 50, which is connected to the first air chamber 11 and the second air chamber 12 respectively. The vacuum cleaner also includes a receiving cavity 30, which is connected to the negative pressure source 50 through the first air chamber 11 and / or the second air chamber 12.

[0097] The rotating shaft 83 is set in the initial position; wherein, the rotating shaft 83 is capable of rotating counterclockwise or clockwise relative to the initial position; wherein,

[0098] In response to the clockwise rotation of the rotating shaft 83, the second pushing part 82 abuts against the second valve 22 and pushes the second valve 22 to open the second air inlet 121; and causes the first valve 21 to close the first air inlet 111; furthermore...

[0099] In response to the operation of the negative pressure source 50, gas enters the second air chamber 12 from the external gas environment through the second air inlet 121, and then enters the receiving cavity 30 through the second air chamber 12; and the gas flows from the receiving cavity 30 through the first air chamber 11 to the negative pressure source 50.

[0100] Specifically, refer to Figure 14a , 14b At this time, the rotating shaft 83 is set in the initial position to limit the first pushing part 81 to a fixed position relative to the first valve 21, and to limit the second pushing part 82 to a fixed position relative to the second valve 22. (Refer to...) Figure 15a and Figure 15b The rotating shaft 83 can rotate clockwise relative to its initial position in response to the power output of the drive source 84. At this time, the end face of the second pushing part 82 abuts against the second valve 22 and adapts to the curved shape of the abutment between the second pushing part 82 and the second valve 22, continuously pressing down on the second valve 22, so that the distance between the second valve 22 and the second air inlet 121 increases; at the same time, the end face of the first pushing part 81 begins to move away from the first valve 21, so as to keep the force of the first pushing part 81 on the first valve 21 continuously decreasing, or so that the first pushing part 81 and the first valve 21 do not interact, thereby keeping the first valve at the first air inlet 111 and ensuring the closure of the first air inlet 111. Further, referring to Figure 12 The negative pressure source 50 performs a suction operation, generating an airflow as shown by arrow a12. At this time, the airflow enters the second air chamber 12 from the second air inlet 121 and further passes through the second filter section 42 into the receiving cavity 30, as shown by arrows a16 to a13. The first air inlet 111 is closed, and the airflow, as shown by arrows a15 to a14, flows from the receiving cavity 30 through the first filter section 41, the first air chamber 11, and the air passage 70 (described in detail later) to the negative pressure source 50, thereby changing the direction of the airflow within the second air chamber 12. This provides the second filter section 42 with a backflushing airflow from a16 to a13.

[0101] In some embodiments, the vacuum cleaner includes a middle cover 32 and a dustbin 31; the middle cover 32 covers the opening of the dustbin 31 to form an enclosing cavity; the vacuum cleaner includes a first filter section 41 and a second filter section 42, and the middle cover 32 includes a first cover plate 321 and a second cover plate 322, wherein,

[0102] The first air chamber 11 is covered on the upper surface of the first cover plate 321, and the lower surface of the first cover plate 321 is covered on the top of the first filter section 41; a first guide hole 3211 is provided through the upper and lower surfaces of the first cover plate 321, and the first air chamber 11 is connected to the receiving cavity 30 through the first guide hole 3211 and the first filter section 41.

[0103] The second air chamber 12 is disposed on the upper surface of the second cover plate 322, and the lower surface of the second cover plate 322 is disposed above the second filter section 42; a second guide hole 3221 is provided through the upper and lower surfaces of the second cover plate 322, and the second air chamber 12 communicates with the receiving cavity 30 through the second guide hole 3221 and the second filter section 42; wherein,

[0104] In response to the clockwise rotation of the rotating shaft 83 and the operation of the negative pressure source 50, gas enters the second air chamber 12 from the external environment through the second air inlet 121, then passes through the second cover plate 322 via the second guide hole 3221, and enters the receiving cavity 30 via the second filter section 42; and the gas flows from the receiving cavity 30 through the first filter section 41, the first guide hole 3211, and the first air chamber 11 to the negative pressure source 50.

[0105] Specifically, refer to Figure 12 , 14a 14b Figure 15a and Figure 15b The rotating shaft 83 rotates counterclockwise from its initial position, causing the second pushing part 82 to abut against and push the second valve 22 away from the second air inlet 121, and keeping the first valve 21 closed to the first air inlet 111. The negative pressure source 50 provides a negative pressure environment to the upper surface of the first cover plate 321 through the first air chamber 11. The first guide hole 3211 provided on the first cover plate 321 can conduct the negative pressure environment to the upper surface of the first filter part 41, thereby ensuring that the gas in the receiving cavity 30 is drawn through the first filter part 41, maintaining a low pressure state in the receiving cavity 30 relative to the external gas environment. At this time, the gas flows into the second air chamber 12 from the second air inlet 121 and flows to the second cover plate 322 connected to the second air chamber 12. The second cover plate 322 is provided with a second guide hole 3221. Under pressure, the gas passes through the second cover plate 322 through the second guide hole 3221 and enters the second filter section 42. Due to the material properties of the filter section, the gas further flows through the second filter section 42 to the receiving cavity 30. At this time, dust, debris, etc. accumulated on the two sides of the second filter section 42 relative to the receiving cavity 30 are blown off by the air flowing through the second filter section 42 to the receiving cavity 30, thus cleaning the second filter section 42.

[0106] Specifically, refer to Figure 9bThe second guide hole 3221 is configured to be thicker on one side relative to the second filter section 42 and thinner on one side relative to the second cover plate 322, which increases the gas range of the second air chamber 12 in the direction of the second filter section and improves the cleaning effect on the second filter section 42.

[0107] In some embodiments, with the rotating shaft 83 in its initial position, the first valve 21 closes the first air inlet 111, and the second valve 22 closes the second air inlet 121; gas flows from the receiving cavity 30 through the first air chamber 11 to the negative pressure source 50, and gas flows from the receiving cavity 30 through the second air chamber 12 to the negative pressure source 50.

[0108] In some embodiments, the first pushing part 81 includes a first sealing ring 251, and the second pushing part 82 includes a second sealing ring 252, wherein:

[0109] The first sealing ring 251 is disposed on the mating end face of the first valve 21 relative to the first air inlet 111. The first pushing part 81 can be sealed and connected to the first air inlet 111 through the first sealing ring 251 to close the first air inlet 111.

[0110] The second sealing ring 252 is disposed on the mating end face of the second valve 22 relative to the second air inlet 121. The second pushing part 82 can be sealed and connected to the second air inlet 121 through the second sealing ring 252 to close the second air inlet 121.

[0111] A first pushing part 81 is disposed above the first valve 21, and a second pushing part 82 is disposed above the second valve 22; the movement path of the first valve 21 is disposed between the first air inlet 111 and the first cover plate 321; the movement path of the second valve 22 is disposed between the second air inlet 121 and the second cover plate 322; wherein,

[0112] In response to the rotation shaft 83 being set in its initial position and rotating counterclockwise, and the operation of the negative pressure source 50, the first pushing part 81 presses down the first valve 21, so that the first valve 21 moves from the first air inlet 111 toward the first cover plate 321 until the first sealing ring 251 separates from the first air inlet 111, so that the first air inlet 111 is opened, thereby allowing the first air chamber 11 to communicate with the external gas environment; and the second valve 22 is kept sealed to the second air inlet 121 by the second sealing ring 252, so that the second air inlet 121 remains closed.

[0113] Specifically, refer to Figure 7 and Figure 8 ,as well as Figures 13 to 16. The movement path of the first valve 21 is set between the first air inlet 111 and the first cover plate 321, so that the first valve 21 can press the first sealing ring 251 against the first air inlet 111, or release the first air inlet 111 to allow gas to flow in from the first air inlet 111; and the movement path of the second valve 22 is set between the second air inlet 121 and the second cover plate 322, so that the second valve 22 can press the second sealing ring 252 against the second air inlet 121, or release the second air inlet 121 to allow gas to flow in from the second air inlet 121. In response to the rotation of the rotating shaft 83 counterclockwise from its initial position and in response to the suction of the negative pressure source 50, the first valve 21 begins to move away from the first air inlet 111, and the interference of the first sealing ring 251 pressed between the first valve 21 and the first air inlet 111 is released, allowing air to flow into the first air inlet 111. Meanwhile, the second sealing ring 252 is pressed between the second valve 22 and the second air inlet 121, so that the second sealing ring 252 is press-fitted with the second valve 22 and the second air inlet 121 respectively, thereby ensuring that the second air inlet 121 and the second valve 22 remain sealed.

[0114] In some embodiments, the first valve 21 has a first upper limit 211 on its end face relative to the first cover plate 321; the first cover plate 321 has a first lower limit 3212 on its end face relative to the first valve 21, and the vacuum cleaner further includes:

[0115] The first spring 23 is respectively sleeved on the first upper limit position 211 and the first lower limit position 3212; the first spring 23 is kept in a compressed state and is set along the movement path of the first valve 21; the first spring 23 is used to make the first sealing ring 251 of the first valve 21 abut against the first air inlet 111, so that the first valve 21 closes the first air inlet 111.

[0116] Specifically, refer to Figure 14a , 14b , Figure 16a and Figure 16b The first spring 23 provides support for the movement of the first valve 21 toward the first air inlet 111. When the rotating shaft 83 is in its initial state, the first valve 21 and the first cover plate 321 are in their initial state on the movement path, that is, the distance between the first valve 21 and the first cover plate 321 is at its maximum. At this time, the two ends of the first spring 23 abut against the first upper limit position 211 of the first valve 21 and the first lower limit position 3212 of the first cover plate 321, and remain compressed, so that the first valve 21 can be pressed onto the first cover plate 321, thereby achieving the closure of the first air inlet 111 through the first sealing ring 251.

[0117] When the rotating shaft 83 rotates counterclockwise from its initial state, the first pushing part 81 presses down on the first valve 21 until the first valve 21 is at the farthest end of the movement path, that is, the state where the distance between the first valve 21 and the first cover plate 321 is the smallest. At this time, the first spring 23 abuts against the first upper limit position 211 of the first valve 21 and the first lower limit position 3212 of the first cover plate 321 respectively, and remains in a compressed state, so that the first valve 21 can be pressed against the first pushing part 81, thereby enabling the first valve 21 to move in the movement path in real time in response to the rotation of the first pushing part 81.

[0118] As the rotating shaft 83 rotates clockwise from its initial state, the first pushing part 81 gradually moves away from the first valve 21, or the first pushing part 81 does not exert any relative action on the first valve 21, so that the first valve 21 always maintains a sealed connection with the first air inlet 111 through the first sealing ring 251. The relative position of the first valve 21 on the movement path remains unchanged, thereby keeping the first valve 21 pressed against the first cover plate 321 to keep the first air inlet 111 closed.

[0119] In some embodiments, the middle cover 32 and the first cover plate 321 are integrally formed; the middle cover 32 includes a first step 71, the first step 71 is connected to the first cover plate 321, the first step 71 is disposed below the first valve 21 and is located on the movement path of the first valve 21;

[0120] In response to the rotation shaft 83 being set in the initial position and rotating counterclockwise, the first valve 21 moves from the first air inlet 111 to the first cover plate 321 until the lower edge of the first valve 21 abuts against the first step 71.

[0121] Specifically, refer to Figure 9 The middle cover 32 is provided with a first step 71. The first step 71 is formed by the first cover plate 321 being recessed in the direction away from the first filter section 41. That is, the first step 71 is vertically connected to the lower part of the first cover plate 321 and extends towards the upper surface of the first cover plate 321. The first step 71 is provided below the first valve 21 and is located on the movement path of the first valve 21. This allows the first valve 21 to abut against its lower edge when the rotating shaft 83 rotates counterclockwise downward from its initial position. This connection between the first valve 21 and the first step 71 weakens or blocks the gas flow between the first air chamber 11 and the negative pressure source 50, ensuring that the gas flows from the first air inlet 111 to the receiving cavity 30 through the first filter section 41. Furthermore, when the first valve 21 is closed, the first step 71 effectively increases the cross-sectional area of ​​the gas flow from the first air chamber 11 to the negative pressure source 50, thereby increasing the gas flow rate.

[0122] In some embodiments, the first pushing part 81 includes a first sealing ring 251, and the second pushing part 82 includes a second sealing ring 252, wherein:

[0123] The first sealing ring 251 is disposed on the mating end face of the first valve 21 relative to the first air inlet 111. The first pushing part 81 can be sealed and connected to the first air inlet 111 through the first sealing ring 251 to close the first air inlet 111.

[0124] The second sealing ring 252 is disposed on the mating end face of the second valve 22 relative to the second air inlet 121. The second pushing part 82 can be sealed and connected to the second air inlet 121 through the second sealing ring 252 to close the second air inlet 121.

[0125] A first pushing part 81 is disposed above the first valve 21, and a second pushing part 82 is disposed above the second valve 22; the movement path of the first valve 21 is disposed between the first air inlet 111 and the first cover plate 321; the movement path of the second valve 22 is disposed between the second air inlet 121 and the second cover plate 322; wherein,

[0126] In response to the rotation shaft 83 being set in its initial position and rotating clockwise, and the operation of the negative pressure source 50, the second pusher 82 presses down the second valve 22, causing the second valve 22 to move from the second air inlet 121 toward the second cover plate 322 until the second sealing ring 252 separates from the second air inlet 121, thereby opening the second air inlet 121 and allowing the second air chamber 12 to communicate with the external gas environment; and the first valve 21 is kept sealed to the first air inlet by the first sealing ring 251, so that the first air inlet 111 remains closed.

[0127] Specifically, refer to Figure 7 and Figure 8 ,as well as Figures 13 to 16. The movement path of the first valve 21 is set between the first air inlet 111 and the first cover plate 321, so that the first valve 21 can press the first sealing ring 251 against the first air inlet 111, or release the first air inlet 111 to allow gas to flow in from the first air inlet 111; and the movement path of the second valve 22 is set between the second air inlet 121 and the second cover plate 322, so that the second valve 22 can press the second sealing ring 252 against the second air inlet 121, or release the second air inlet 121 to allow gas to flow in from the second air inlet 121. In response to the rotation of the rotating shaft 83 counterclockwise from its initial position and in response to the suction of the negative pressure source 50, the first valve 21 begins to move away from the first air inlet 111, and the interference of the first sealing ring 251 pressed between the first valve 21 and the first air inlet 111 is released, allowing air to flow into the first air inlet 111. Meanwhile, the second sealing ring 252 is pressed between the second valve 22 and the second air inlet 121, so that the second sealing ring 252 is press-fitted with the second valve 22 and the second air inlet 121 respectively, thereby ensuring that the second air inlet 121 and the second valve 22 remain sealed.

[0128] In some embodiments, the second valve 22 has a second upper limit position 221 on its end face relative to the second cover plate 322; the second cover plate 322 has a second lower limit position 3222 on its end face relative to the second valve 22, and the vacuum cleaner further includes:

[0129] The second spring 24 is respectively sleeved on the second upper limit position 221 and the second lower limit position 3222; the second spring 24 is kept in a compressed state and is arranged along the movement path of the second valve 22; the second spring 24 is used to make the second sealing ring 252 of the second valve 22 abut against the second air inlet 121, so that the second valve 22 closes the second air inlet 121.

[0130] Specifically, refer to Figure 14a , 14b , Figure 16a and Figure 16b The first spring 23 provides support for the movement of the first valve 21 toward the first air inlet 111. When the rotating shaft 83 is in its initial state, the first valve 21 and the first cover plate 321 are in their initial state on the movement path, that is, the distance between the first valve 21 and the first cover plate 321 is at its maximum. At this time, the two ends of the first spring 23 abut against the first upper limit position 211 of the first valve 21 and the first lower limit position 3212 of the first cover plate 321, and remain compressed, so that the first valve 21 can be pressed onto the first cover plate 321, thereby achieving the closure of the first air inlet 111 through the first sealing ring 251.

[0131] When the rotating shaft 83 rotates counterclockwise from its initial state, the first pushing part 81 presses down on the first valve 21 until the first valve 21 is at the farthest end of the movement path, that is, the state where the distance between the first valve 21 and the first cover plate 321 is the smallest. At this time, the first spring 23 abuts against the first upper limit position 211 of the first valve 21 and the first lower limit position 3212 of the first cover plate 321 respectively, and remains in a compressed state, so that the first valve 21 can be pressed against the first pushing part 81, thereby enabling the first valve 21 to move in the movement path in real time in response to the rotation of the first pushing part 81.

[0132] As the rotating shaft 83 rotates clockwise from its initial state, the first pushing part 81 gradually moves away from the first valve 21, or the first pushing part 81 does not exert any relative action on the first valve 21, so that the first valve 21 always maintains a sealed connection with the first air inlet 111 through the first sealing ring 251. The relative position of the first valve 21 on the movement path remains unchanged, thereby keeping the first valve 21 pressed against the first cover plate 321 to keep the first air inlet 111 closed.

[0133] In some embodiments, the middle cover 32 and the second cover plate 322 are integrally formed; the middle cover 32 includes a second step 72, the second step 72 is connected to the second cover plate 322, the second step 72 is disposed below the second valve 22 and is located on the movement path of the second valve 22;

[0134] In response to the rotation shaft 83 being set in the initial position and rotating clockwise, the second valve 22 moves from the second air inlet 121 toward the second cover plate 322 until the lower edge of the second valve 22 abuts against the second step 72.

[0135] Specifically, refer to Figure 9 The middle cover 32 is provided with a second step 72. The second step 72 is formed by the second cover plate 322 being recessed in the direction away from the second filter section 42. That is, the second step 72 is vertically connected to the lower part of the second cover plate 322 and extends towards the upper surface of the second cover plate 322. The second step 72 is located below the second valve 22 and is positioned on the movement path of the second valve 22. This allows the second valve 22 to abut against its lower edge when the rotating shaft 83 rotates counterclockwise downward from its initial position. This connection between the second valve 22 and the second step 72 weakens or blocks the gas flow between the second air chamber 12 and the negative pressure source 50, ensuring that the gas flows from the second air inlet 121 to the receiving cavity 30 through the second filter section 42. Furthermore, when the second valve 22 is closed to the second air inlet 121, the second step 72 effectively increases the cross-sectional area of ​​the gas flow from the second air chamber 12 to the negative pressure source 50, thereby increasing the gas flow rate.

[0136] In some embodiments, the vacuum cleaner includes:

[0137] A filter is disposed through the middle cover 32 and is divided into at least one first filter section 41 and at least one second filter section 42.

[0138] Specifically, refer to Figure 4 The vacuum cleaner provided in this application has a single, continuous filter. Specifically, the filter can be a flat-panel filter to ensure sufficient contact area between the filter and the first air chamber 11 and / or the second air chamber 12. The filter is disposed through the middle cover 32 to allow gas flow between the receiving cavity 30 and the first and second air chambers 11 and 12. The continuous filter is divided into at least one filter section and at least one second filter section 42. Through the interaction between the first valve 21, the first air chamber 11, the second valve 22, and the second air chamber 12, airflow passes through the filter from different directions, thereby cleaning different parts of the filter. The single, continuous filter design facilitates user replacement and reduces the user's workload. Specifically, refer to... Figure 4 The filter is provided with a partition rib 43, which divides the filter into a first filter section 41 and a second filter section 42 on the side of the filter opposite to the first cover plate 321 and the second cover plate 322. The filter 40 is sealed to the first cover plate 321 and the second cover plate 322 via the upper edge of the filter 40 and the partition rib 43, thereby ensuring that airflow passes through the first air chamber 11 to the first filter section 41, or flows from the receiving cavity 30 to the first filter section 41. Similarly, airflow can be ensured to pass through the second air chamber 12 to the second filter section 42, or flow from the receiving cavity 30 to the second filter section 42. In some embodiments, the vacuum cleaner includes:

[0139] A first fixing part 61 is contained within a receiving cavity 30 and is detachably disposed on the inner wall of the receiving cavity 30. The first fixing part 61 is located below a first cover plate 321, and the first fixing part 61 and the first cover plate 321 form a first limiting groove; a first filter part 41 is limited within the first limiting groove; and...

[0140] The second fixing part 62 is contained within the receiving cavity 30 and is detachably disposed on the inner wall of the receiving cavity 30. The second fixing part 62 is disposed below the second cover plate 322, and the second fixing part 62 and the second cover plate 322 form a second limiting groove; the second filter part 42 is limited within the second limiting groove.

[0141] In some embodiments, the vacuum cleaner includes a mounting bracket 60; the mounting bracket 60 is contained within a receiving cavity 30, the mounting bracket 60 is detachably disposed on a middle cover 32, and the mounting bracket 60 is divided into at least one first fixing portion 61 and at least one second fixing portion 62.

[0142] Specifically, refer to Figures 3 to 5 The first fixing part 61 and the second fixing part 62 provided in this application are part of the fixing bracket 60. The fixing bracket 60 is detachably connected to the middle cover 32 from the inside of the receiving cavity 30. The fixing bracket 60 is provided with a partition 63, so that the fixing bracket 60 is at least divided into a first fixing part 61 and at least one second fixing part 62. The first fixing part 61 is connected to the first cover plate 321 from below and together with the first cover plate 321, it encloses the receiving space of the first filter part 41. The second fixing part 62 is connected to the second cover plate 322 from below and together with the second cover plate 322, it encloses the receiving space of the second filter part 42, so as to realize the limiting function of the filter by the fixing bracket 60.

[0143] In some embodiments, the vacuum cleaner further includes an air duct 70; one side of the air duct 70 is connected to a negative pressure source 50, and the first air chamber 11 and the second air chamber 12 are respectively connected to the other side of the air duct 70; the air duct 70 and the first air chamber 11 are used to enable the negative pressure source 50 to communicate with the first filter section 41 in gas, and the air duct 70 and the second air chamber 12 are used to enable the negative pressure source 50 to communicate with the second filter section 42 in gas.

[0144] Specifically, refer to Figures 9 to 11 The air passage 70 extends from the first air chamber 11 and the second air chamber 12 to the space where the negative pressure source 50 is located. Specifically, the air passage 70 can be part of the middle cover 32, extending from the first air chamber 11 to the negative pressure source 50, and from the second air chamber 12 to the negative pressure source 50. The low-pressure environment generated by the negative pressure source 50 is conducted by the air passage 70 to the connection between the first air chamber 11 and the second air chamber 12, and is connected to or blocked from the first air chamber 11 through the first valve 21, and then connected to the air in the receiving cavity 30 through the first filter section 41; or, it is connected to or blocked from the second air chamber 12 through the second valve 22, and then connected to the air in the receiving cavity 30 through the second filter section 42.

[0145] Specifically, the first valve 21 is connected to the side opposite to the first air chamber 11 and the second valve 22 is connected to the side opposite to the second air chamber 12, so that when the first valve 21 closes the first air inlet 111 and the second valve 22 closes the second air inlet 121, the pressure difference between the negative pressure source 50 and the first air chamber 11 and the second air chamber 12 remains the same.

[0146] In some embodiments, the first air inlet 111 and the second air inlet 121 are disposed on the same plane, the first air chamber 11 is disposed between the first filter section 41 and the negative pressure source 50; the second air chamber 12 is disposed between the second filter section 42 and the negative pressure source 50; the first air inlet 111 is disposed between the first filter section 41 and the negative pressure source 50; and the second air inlet 121 is disposed between the second filter section 42 and the negative pressure source 50.

[0147] Specifically, refer to Figure 2 , Figure 4 , Figure 14a , 14b , Figure 15a , Figure 15b , Figure 16a and Figure 16b The first air inlet 111 and the second air inlet 121 are disposed on the same plane, which is parallel to the axis of the rotation shaft 83. This allows the first valve 21 and the second valve 22 to respond to the rotation of the rotation shaft 83 and maintain the same depth in the first air inlet 111 and the second air inlet 121, thereby stabilizing the airflow size entering the first air inlet 111 and the second air inlet 121. The first air chamber 11 is disposed between the first filter section 41 and the negative pressure source 50; the second air chamber 12 is disposed between the second filter section 42 and the negative pressure source 50; the first air inlet 111 is disposed between the first filter section 41 and the negative pressure source 50; and the second air inlet 121 is disposed between the second filter section 42 and the negative pressure source 50, so as to realize the gas passage of negative pressure source 50—air passage 70—first air chamber 11—first filter section 41—accommodating cavity 30, and the gas passage of negative pressure source 50—air passage 70—second air chamber 12—second filter section 42—accommodating cavity 30.

[0148] In some embodiments, the negative pressure source 50 is configured as a suction motor 51; the suction motor 51 is partially enclosed in the middle cover 32, the air inlet 511 of the suction motor 51 is located at the bottom of the suction motor 51, the air inlet 511 is connected to the air duct 70, and communicates with the first air chamber 11 or the second air chamber 12 through the air duct 70; the suction motor 51 is provided with an exhaust channel 512, the air outlet 513 of the exhaust channel 512 is located on the side of the vacuum cleaner, and the orientation of the air outlet 513 is parallel to the working surface of the vacuum cleaner and away from the vacuum cleaner; the gas enters the suction motor 51 through the air inlet 511 and flows to the air outlet 513 through the exhaust channel 512.

[0149] Specifically, refer to Figure 10 The middle cover 32 has a recessed groove on its surface facing the receiving cavity 30 to accommodate the suction motor 51. The air inlet 511 of the suction motor 51 is positioned relative to the middle cover 32 and directly opposite the air duct 70 to create a low-pressure environment from the air duct 70 towards the receiving cavity 30. The suction motor 51 can be configured as a radial fan. An exhaust duct 512 is provided around the side wall of the suction motor 51 and radiates outward in a spiral shape until it extends to the side wall of the vacuum cleaner, forming an air outlet 513 parallel to the working surface of the vacuum cleaner and away from the vacuum cleaner. Thus, gas can be drawn from the receiving cavity 30 by the suction motor 51 and discharged from the vacuum cleaner through the air inlet 511, the exhaust duct 512, and the air outlet 513.

[0150] In some embodiments, the negative pressure source 50 is configured as a suction motor 51; the suction motor 51 is partially enclosed in the middle cover 32; the suction motor 51 is provided with a heat dissipation structure, the heat dissipation duct inlet 5121 of the heat dissipation structure is located at the top of the suction motor 51, the heat dissipation duct inlet 5121 is connected to the main heat dissipation duct 5122, and extends through the main heat dissipation duct 5122 to the heat dissipation duct outlet 5123; the heat dissipation duct outlet 5123 is located on the other side of the vacuum cleaner relative to the air outlet 513; and the orientation of the heat dissipation duct outlet 5123 is parallel to the working surface of the vacuum cleaner and away from the air outlet 513; gas enters the suction motor 51 through the heat dissipation duct inlet 5121 and flows to the heat dissipation duct outlet 5123 through the main heat dissipation duct 5122; wherein, the main heat dissipation duct 5122 and the exhaust duct 512 are independently configured, and the main heat dissipation duct 5122 is located above the exhaust duct 512.

[0151] Specifically, refer to Figure 11 This application provides an air inlet 511, an exhaust duct 512, and an air outlet 513 to provide an exhaust path for the suction motor 51. Above this passageway, the vacuum cleaner provided in this application also includes a heat dissipation structure for cooling the suction motor 51. A heat dissipation air duct inlet 5121 is located at the very top of the suction motor 51. The heat dissipation air duct inlet 5121, in response to a fan mounted on the suction motor 51, draws in low-temperature airflow from the outside into the heat source of the suction motor 51. A main heat dissipation air duct 5122 is connected to the heat dissipation air duct inlet 5121 and is arranged around the heat source of the suction motor 51. Similar to the exhaust duct 512, the main heat dissipation air duct 5122 is spiral-shaped and radiates outwards, extending to the opposite side from the exhaust outlet to form a heat dissipation air duct outlet 5123, thereby achieving heat dissipation for the suction motor. The main heat dissipation air duct 5122 and the exhaust air duct 512 are set independently. On the one hand, this can prevent the residual garbage in the exhaust air duct 512 from clogging the suction motor. On the other hand, it can prevent the gas in the two channels from conflicting and causing turbulence, which would affect the normal operation of the suction motor.

[0152] In some embodiments, the dustbin 31 further includes a suction port 85; the dustbin 31 is connected to the external gas environment through the suction port 85; so that gas responds to the negative pressure source 50 and enters the dustbin 31 through the suction port 85.

[0153] Specifically, refer to Figure 12 , 13 and Figure 17 The suction port 85 of the dust bin 31 is connected to the external gas environment. The suction port 85 can be connected to the cleaning component to suck up the garbage on the working surface, and then separate the garbage, dust and other debris through the filter and collect them into the receiving cavity 30. This ensures that the gas responds to the negative pressure source 50 and flows from the filter to the first air chamber 11 and / or the second air chamber 12.

[0154] In a complete embodiment, the vacuum cleaner provided in this application includes a dustbin 31 and a middle cover 32, with the middle cover 32 covering the top of the dustbin 31. The middle cover 32 and the dustbin 31 together form a receiving cavity 30. The dustbin 31 is provided with a suction port 85, and a filter is fixed to the middle cover 32 by a fixing bracket 60, forming an air passage from the dustbin 31 to the filter. The middle cover 32 covers the fixing bracket 60 to cooperate with the fixing bracket 60 in clamping the filter, so that the filter is confined within the receiving cavity 30. The middle cover 32 integrally forms a first cover plate 321 and a second cover plate 322 at the position where it covers the fixing bracket 60, and the first cover plate 321 and the second cover plate 322 are recessed relative to the direction opposite to the dustbin 31. The fixing bracket 60 is provided with a partition 63, which is vertically disposed below the connection between the first cover plate 321 and the second cover plate 322. The fixed bracket 60, in conjunction with the first cover plate 321 and the second cover plate 322, divides the filter into a first filter section 41 and a second filter section 42 via a partition 63. This allows the receiving cavity 30 to exchange air through the first filter section 41 and / or the second filter section 42.

[0155] Furthermore, a first guide hole 3211 is provided on the first cover plate 321. The first guide hole 3211 is a frustum-shaped structure, narrower at the top and wider at the bottom, wider near the filter section and narrower near the first air chamber 11, thereby increasing the area of ​​air in contact with the first filter section 41. The first air chamber 11 is connected through the first guide hole 3211. A first air inlet 111 is provided on the upper wall of the first air chamber 11, which can communicate with the atmosphere. The first air chamber 11 is connected to the negative pressure source 50 through the air passage 70. A first step is provided at the connection between the air passage 70 and the first air chamber 11. A first valve 21 is sleeved inside the first air inlet 111. A first step is provided on the lower edge of the first valve 21. A first spring 23 is clamped between the first valve 21 and the first cover plate 321. The first spring 23 is used to push the upper edge of the first valve 21 against the inner edge of the first air inlet 111, and a sealing ring provided on the upper edge of the first valve 21 ensures a seal between the upper edge and the inner edge. The first pusher 81 is configured as a first cam, and the second pusher 82 is configured as a second cam. The first cam is provided above the first valve 21, and the first cam can press down the first valve 21, so that the first valve 21 cuts off the gas communication between the first gas chamber 11 and the negative pressure source 50.

[0156] The second cover plate 322 is provided with a second guide hole 3221, which is a frustum-shaped hole that is narrower at the top and wider at the bottom. It is wider near the filter section and narrower near the second air chamber 12, thereby increasing the area of ​​air in contact with the second filter section 42. The second air chamber 12 is connected through the second guide hole 3221. The upper wall of the second air chamber 12 is provided with a second air inlet 121, which can communicate with the atmosphere. The second air chamber 12 is connected to the negative pressure source 50 through the air passage 70. A second step is provided at the connection between the air passage 70 and the second air chamber 12. A second valve 22 is sleeved inside the second air inlet 121. The lower edge of the second valve 22 is provided with a second step. A second spring 24 is clamped between the second valve 22 and the second cover plate 322. The second spring 24 is used to push the upper edge of the second valve 22 against the inner edge of the second air inlet 121, and a sealing ring provided on the upper edge of the second valve 22 ensures a seal between the upper edge and the inner edge. A second cam is provided above the second valve 22. The second cam can press down the second valve 22, so that the second valve 22 cuts off the gas connection between the second gas chamber 12 and the negative pressure source 50.

[0157] The first cam and the second cam are connected by a rotating shaft 83, and the phase difference between the first cam and the second cam is set to 180 degrees. A servo motor is connected to the rotating shaft 83, which can drive the rotating shaft 83 to rotate, thereby driving the rotating shaft 83 of the first cam and the second cam to rotate. The servo motor can cause the second cam to separate from the second valve 22 when the first cam presses down on the first valve 21; or cause the first cam to separate from the first valve 21 when the second cam presses down on the second valve 22; or cause the second cam to separate from the second valve 22 when the first cam separates from the first valve 21.

[0158] In summary, in response to the negative pressure provided by the negative pressure source 50 in the air passage 70, when the first valve 21 is closed and the second valve 22 is open, gas enters the receiving cavity 30 through the suction port 85 and the first filter section 41, and flows to the air passage 70 through the second filter section 42, achieving self-cleaning of the second area. When the first valve 21 is open and the second valve is closed, gas enters the receiving cavity 30 through the suction port 85 and the second filter section 42, and flows to the air passage 70 through the first filter section 41, achieving self-cleaning of the first area. When both the first valve 21 and the second valve 22 are closed, the first air chamber 11 and the second air chamber 12 are isolated from the external gas environment, and the vacuum cleaner performs its normal vacuuming operation.

[0159] It should be noted that, without conflict, all of the above technical features can be freely combined, and such free combination, simple variations, changes and modifications are all within the protection scope of this patent.

[0160] All the technical features of the above components can be freely combined without conflict, and such free combination or simple variations, changes and modifications are all within the protection scope of this patent.

[0161] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "yet another embodiment," "another embodiment," "other embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0162] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications and variations to the above embodiments within the scope of this application.

Claims

1. A vacuum cleaner, characterized in that, include: A first air chamber, a first valve, and a first air inlet; wherein the first air inlet is disposed in the first air chamber; the first valve is disposed in conjunction with the first air chamber; the first valve is used to close the first air inlet, or the first valve is used to open the first air inlet, allowing air from the external gas environment to flow into the first air chamber through the first air inlet; The system comprises a second air chamber, a second valve, and a second air inlet; wherein the second air inlet is disposed in the second air chamber; the second valve is configured in conjunction with the second air chamber; the second valve is used to close the second air inlet, or the second valve is used to open the second air inlet, allowing air from the external gas environment to flow into the second air chamber through the second air inlet; A first actuating part is capable of abutting against the first valve; the first actuating part is capable of rotating to push the first valve to open the first air inlet. The second actuating part is capable of abutting against the second valve; the second actuating part is capable of rotating to push the second valve to open the second air inlet. A rotating shaft and a drive source; the drive source is connected to the rotating shaft, and the rotating shaft is fixedly connected to the first pushing part and the second pushing part; the drive source is used to drive the rotating shaft to rotate, so as to drive the first pushing part and the second pushing part to rotate through the rotating shaft, and then push the first valve through the first pushing part, or push the second valve through the second pushing part.

2. The vacuum cleaner according to claim 1, characterized in that, The vacuum cleaner further includes a negative pressure source, which is connected to the first air chamber and the second air chamber respectively. The vacuum cleaner also includes a receiving cavity, which is connected to the negative pressure source through the first air chamber and / or the second air chamber. The rotating shaft is positioned at an initial position; wherein, the rotating shaft is capable of rotating counterclockwise or clockwise relative to the initial position; wherein... In response to the counterclockwise rotation of the rotating shaft, the first pushing part abuts against the first valve and pushes the first valve to open the first air inlet; and the second valve closes the second air inlet; furthermore... In response to the operation of the negative pressure source, gas enters the first air chamber from the external gas environment through the first air inlet, and then enters the receiving cavity through the first air chamber; and gas flows from the receiving cavity through the second air chamber to the negative pressure source.

3. The vacuum cleaner according to claim 2, characterized in that, The vacuum cleaner includes a middle cover and a dustbin; the middle cover covers the opening of the dustbin to form an enclosing cavity; the vacuum cleaner includes a first filter section and a second filter section, and the middle cover includes a first cover plate and a second cover plate, wherein... The first air chamber is covered on the upper surface of the first cover plate, and the lower surface of the first cover plate is covered on the top of the first filter section; a first guide hole is provided through the upper and lower surfaces of the first cover plate, and the first air chamber is connected to the receiving cavity through the first guide hole and the first filter section; The second air chamber is disposed on the upper surface of the second cover plate, and the lower surface of the second cover plate covers the upper part of the second filter section; a second guide hole is provided through the upper and lower surfaces of the second cover plate, and the second air chamber communicates with the receiving cavity through the second guide hole and the second filter section; wherein, In response to the counterclockwise rotation of the rotating shaft and the operation of the negative pressure source, gas enters the first air chamber from the external environment through the first air inlet, then passes through the first cover plate via the first guide hole, and enters the receiving cavity via the first filter section; and the gas flows from the receiving cavity through the second filter section, the second guide hole, and the second air chamber to the negative pressure source in sequence.

4. The vacuum cleaner according to claim 1, characterized in that, The vacuum cleaner further includes a negative pressure source, which is connected to the first air chamber and the second air chamber respectively. The vacuum cleaner also includes a receiving cavity, which is connected to the negative pressure source through the first air chamber and / or the second air chamber. The rotating shaft is positioned at an initial position; wherein, the rotating shaft is capable of rotating counterclockwise or clockwise relative to the initial position; wherein... In response to the clockwise rotation of the rotating shaft, the second pushing part abuts against the second valve and pushes the second valve to open the second air inlet; and causes the first valve to close the first air inlet; furthermore... In response to the operation of the negative pressure source, gas enters the second air chamber from the external gas environment through the second air inlet, and then enters the receiving cavity through the second air chamber; and gas flows from the receiving cavity through the first air chamber to the negative pressure source.

5. The vacuum cleaner according to claim 4, characterized in that, The vacuum cleaner includes a middle cover and a dustbin; the middle cover covers the opening of the dustbin to form an enclosing cavity; the vacuum cleaner includes a first filter section and a second filter section, and the middle cover includes a first cover plate and a second cover plate, wherein... The first air chamber is covered on the upper surface of the first cover plate, and the lower surface of the first cover plate is covered on the top of the first filter section; a first guide hole is provided through the upper and lower surfaces of the first cover plate, and the first air chamber is connected to the receiving cavity through the first guide hole and the first filter section; The second air chamber is disposed on the upper surface of the second cover plate, and the lower surface of the second cover plate covers the upper part of the second filter section; a second guide hole is provided through the upper and lower surfaces of the second cover plate, and the second air chamber communicates with the receiving cavity through the second guide hole and the second filter section; wherein, In response to the clockwise rotation of the rotating shaft and the operation of the negative pressure source, gas enters the second air chamber from the external environment through the second air inlet, then passes through the second cover plate via the second guide hole, and enters the receiving cavity via the second filter section; and the gas flows from the receiving cavity through the first filter section, the first guide hole, and the first air chamber to the negative pressure source in sequence.

6. The vacuum cleaner according to any one of claims 2 to 5, characterized in that, With the rotating shaft in the initial position, the first valve closes the first air inlet, and the second valve closes the second air inlet; gas flows from the receiving cavity through the first air chamber to the negative pressure source, and gas flows from the receiving cavity through the second air chamber to the negative pressure source.

7. The vacuum cleaner according to claim 3, characterized in that, The first pushing part includes a first sealing ring, and the second pushing part includes a second sealing ring, wherein: The first sealing ring is disposed on the mating end face of the first valve relative to the first air inlet, and the first pushing part can be sealed to the first air inlet through the first sealing ring to close the first air inlet; The second sealing ring is disposed on the mating end face of the second valve relative to the second air inlet, and the second pushing part can be sealed to the second air inlet through the second sealing ring to close the second air inlet; The first actuating part is disposed above the first valve, and the second actuating part is disposed above the second valve; the travel path of the first valve is located between the first air inlet and the first cover plate; the travel path of the second valve is located between the second air inlet and the second cover plate; wherein, In response to the rotating shaft being positioned at the initial position and rotating counterclockwise, and the operation of the negative pressure source, the first pushing part presses down on the first valve, causing the first valve to move from the first air inlet toward the first cover plate until the first sealing ring separates from the first air inlet, thereby opening the first air inlet and connecting the first air chamber with the external gas environment; and the second valve is kept sealed to the second air inlet by the second sealing ring, so that the second air inlet remains closed.

8. The vacuum cleaner according to claim 7, characterized in that, The first valve has a first upper limit position relative to the end face of the first cover plate; the first cover plate has a first lower limit position relative to the end face of the first valve, and the vacuum cleaner further includes: A first spring is respectively sleeved on the first upper limit position and the first lower limit position; the first spring is kept in a compressed state and is arranged along the movement path of the first valve; the first spring is used to make the first sealing ring of the first valve abut against the first air inlet, so that the first valve closes the first air inlet.

9. The vacuum cleaner according to claim 7, characterized in that, The middle cover and the first cover plate are integrally formed; the middle cover includes a first step, the first step is connected to the first cover plate, the first step is disposed below the first valve and is located on the movement path of the first valve; In response to the rotating shaft being positioned at the initial position and rotating counterclockwise, the first valve moves from the first air inlet toward the first cover plate until the lower edge of the first valve abuts against the first step.

10. The vacuum cleaner according to claim 5, characterized in that, The first pushing part includes a first sealing ring, and the second pushing part includes a second sealing ring, wherein: The first sealing ring is disposed on the mating end face of the first valve relative to the first air inlet, and the first pushing part can be sealed to the first air inlet through the first sealing ring to close the first air inlet; The second sealing ring is disposed on the mating end face of the second valve relative to the second air inlet, and the second pushing part can be sealed to the second air inlet through the second sealing ring to close the second air inlet; The first actuating part is disposed above the first valve, and the second actuating part is disposed above the second valve; the travel path of the first valve is located between the first air inlet and the first cover plate; the travel path of the second valve is located between the second air inlet and the second cover plate; wherein, In response to the rotating shaft being set at the initial position and rotating clockwise, and the operation of the negative pressure source, the second pushing part presses down on the second valve, causing the second valve to move from the second air inlet toward the second cover plate until the second sealing ring separates from the second air inlet, so that the second air inlet is opened, thereby allowing the second air chamber to communicate with the external gas environment; and the first valve is kept sealed to the first air inlet by the first sealing ring, so that the first air inlet remains closed.

11. The vacuum cleaner according to claim 10, characterized in that, The second valve has a second upper limit position relative to the end face of the second cover plate; the second cover plate has a second lower limit position relative to the end face of the second valve, and the vacuum cleaner further includes: The second spring is respectively sleeved on the second upper limit position and the second lower limit position; the second spring is kept in a compressed state and is set along the movement path of the second valve; the second spring is used to make the second sealing ring of the second valve abut against the second air inlet, so that the second valve closes the second air inlet.

12. The vacuum cleaner according to claim 10, characterized in that, The middle cover and the second cover plate are integrally formed; the middle cover includes a second step, the second step is connected to the second cover plate, the second step is disposed below the second valve and is located on the movement path of the second valve; In response to the rotating shaft being positioned at the initial position and rotating clockwise, the second valve moves from the second air inlet toward the second cover plate until the lower edge of the second valve abuts against the second step.

13. The vacuum cleaner according to claim 3 or 5, characterized in that, The vacuum cleaner includes: A filter is disposed through the middle cover and is divided into at least one first filter section and at least one second filter section.

14. The vacuum cleaner according to claim 3 or 5, characterized in that, The vacuum cleaner includes: A first fixing part, which is contained within the receiving cavity, is detachably disposed on the inner wall of the receiving cavity. The first fixing part is located below the first cover plate, and the first fixing part and the first cover plate form a first limiting groove. A first filter part is limited within the first limiting groove. The second fixing part is contained within the receiving cavity and is detachably disposed on the inner wall of the receiving cavity. The second fixing part is disposed below the second cover plate, and the second fixing part and the second cover plate form a second limiting groove. The second filter part is limited within the second limiting groove.

15. The vacuum cleaner according to claim 14, characterized in that, The vacuum cleaner includes a fixed bracket; the fixed bracket is contained within the receiving cavity, the fixed bracket is detachably disposed on the middle cover, and the fixed bracket is divided into at least one first fixing part and at least one second fixing part.

16. The vacuum cleaner according to any one of claims 3 or 5, characterized in that, The vacuum cleaner also includes an air duct; one side of the air duct is connected to the negative pressure source, and the first air chamber and the second air chamber are respectively connected to the other side of the air duct; the air duct and the first air chamber are used to enable the negative pressure source to communicate with the gas of the first filter section, and the air duct and the second air chamber are used to enable the negative pressure source to communicate with the gas of the second filter section.

17. The vacuum cleaner according to any one of claims 3 or 5, characterized in that, The first air inlet and the second air inlet are disposed on the same plane. The first air chamber is disposed between the first filter and the negative pressure source. The second air chamber is disposed between the second filter and the negative pressure source. The first air inlet is disposed between the first filter and the negative pressure source. The second air inlet is disposed between the second filter and the negative pressure source.

18. The vacuum cleaner according to claim 16, characterized in that, The negative pressure source is configured as a suction motor; the suction motor is partially enclosed in the middle cover, and the air inlet of the suction motor is located at the bottom of the suction motor. The air inlet is connected to the air duct and communicates with the gas in the first air chamber or the second air chamber through the air duct; the suction motor is provided with an exhaust channel, and the air outlet of the exhaust channel is located on the side of the vacuum cleaner, and the direction of the air outlet is parallel to the working surface of the vacuum cleaner and away from the vacuum cleaner; the gas enters the suction motor through the air inlet and flows to the air outlet through the exhaust channel.

19. The vacuum cleaner according to claim 18, characterized in that, The negative pressure source is configured as a suction motor; the suction motor is partially enclosed in the middle cover; the suction motor is provided with a heat dissipation structure, the heat dissipation duct inlet of the heat dissipation structure is located at the top of the suction motor, the heat dissipation duct inlet is connected to the main heat dissipation duct, and extends to the heat dissipation duct outlet through the main heat dissipation duct; the heat dissipation duct outlet is located on the other side of the vacuum cleaner opposite to the air outlet; and the orientation of the heat dissipation duct outlet is parallel to the working surface of the vacuum cleaner and away from the air outlet; gas enters the suction motor through the heat dissipation duct inlet and flows to the heat dissipation duct outlet through the main heat dissipation duct; wherein, the main heat dissipation duct and the exhaust duct are independently configured, and the main heat dissipation duct is located above the exhaust duct.

20. The vacuum cleaner according to claim 16, characterized in that, The dustbin also includes a suction port; the dustbin is connected to the external gas environment through the suction port; so that gas responds to the negative pressure source and enters the dustbin through the suction port.

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