Cleaning device and dust collection method

Abstract

The invention provides a cleaning device and a dust collection method, and relates to the technical field of cleaning. The cleaning device comprises a dust suction assembly, a dust collection assembly and a first suction power source. The dust collection assembly comprises a dust cup, the dust cup comprises a cup body and a cover body movably connected to the cup body, and a first dust collection cavity is defined by the cup body and the cover body; the dust collection assembly comprises a second dust collection cavity; the first suction power source is arranged on the dust suction assembly or the dust collection assembly and used for forming negative pressure in the second dust collection cavity, and the cover body is configured to be opened relative to the cup body under triggering of the negative pressure so that the first dust collection cavity can communicate with the second dust collection cavity; the cleaning device has a dust collection stage, and in the dust collection stage, the dust cup is in butt joint with the second dust collection cavity. Air in the second dust collection cavity is pumped out through the first suction power source, negative pressure is formed in the second dust collection cavity, the cover body is opened under the action of the air pressure in the first dust collection cavity, and air flow can drive dust in the first dust collection cavity to completely enter the second dust collection cavity, so that the dust collection efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of cleaning technology, and in particular to a cleaning device and a dust collection method. Background Art

[0002] The cleaning device can suck the dust and garbage on the ground into the dust cup of the cleaning device by sucking air, so as to keep the ground clean. The cleaning device is provided with a dust collection station to collect the dust and other garbage in the dust cup. In the related art, when the cleaning device is placed on the dust collection station, the bottom cover of the dust cup is opened due to the action of the top rod or bump provided on the dust collection station, and the dust in the dust cup will fall freely into the dust collection station. However, there is a problem in this process that the dust and garbage in the dust cup cannot completely enter the dust collection station. Summary of the invention

[0003] Based on this, it is necessary to provide a cleaning device so that the dust and garbage in the dust cup can be completely discharged.

[0004] A cleaning device, comprising a dust suction component, a dust collecting component and a first suction power source; the dust suction component comprises a dust cup, the dust cup comprises a cup body and a cover body movably connected to the cup body, the cup body and the cover body are arranged to form a first dust collecting chamber; the dust collecting component comprises a second dust collecting chamber; the first suction power source is arranged in the dust suction component or the dust collecting component, and is used to form a negative pressure in the second dust collecting chamber, the cover body is configured to open relative to the cup body under the triggering of the negative pressure, so that the first dust collecting chamber and the second dust collecting chamber are connected; wherein, the cleaning device has a dust collecting stage, and in the dust collecting stage, the dust cup is docked with the second dust collecting chamber.

[0005] It is understandable that the setting of the first dust collecting chamber facilitates the collection of dust and garbage when the cleaning device performs vacuum cleaning; the setting of the second dust collecting chamber facilitates the collection of dust and garbage in the first dust collecting chamber, so that when the cleaning device performs subsequent cleaning, the first dust collecting chamber can continue to normally accommodate dust and garbage. During the dust collection process of the second dust collecting chamber, the first suction power source can extract the gas in the second dust collecting chamber, so that the air pressure in the second dust collecting chamber is lower than the air pressure in the first dust collecting chamber, and the cover body is opened under the action of the air pressure in the first dust collecting chamber, and the gas in the first dust collecting chamber will be concentrated and poured into the second dust collecting chamber. The larger air pressure can drive the dust and garbage in the first dust collecting chamber to completely enter the second dust collecting chamber, so that the dust and garbage in the dust cup are completely discharged, which is conducive to improving the dust collection efficiency.

[0006] In one of the embodiments, along the radial direction of the dust cup, the cover body has a first end and a second end that are relatively arranged, the first end is movably connected to the cup body, and the second end can be opened relative to the cup body under the triggering of the negative pressure.

[0007] It can be understood that under the action of the air pressure in the first dust collecting chamber, the second end opens relative to the cup body, and the first end of the cover body is movably connected to the cup body to maintain connection with the cup body, so as to facilitate the subsequent continued connection of the second end with the cup body.

[0008] In one embodiment, the first end is rotatably connected to the cup body, the second end is snap-connected to the cup body, and the second end is configured to unlock from the cup body in response to the pressure difference between the first dust collecting chamber and the second dust collecting chamber reaching a first pressure difference.

[0009] It is understandable that the buckle connection is easy to unlock, and the air pressure in the first dust collecting chamber acts on the buckle connection to break the lock formed by the buckle. At the same time, the buckle connection is also easy to buckle back after unlocking, and the operation is simple.

[0010] In one embodiment, the dust collection assembly includes a locking structure, which is rotatably connected to the cup body. The locking structure includes an elastic portion and a first abutment portion that are spaced apart. The elastic portion and the first abutment portion are disposed at both ends of the locking structure rotation axis. The elastic portion is elastically connected to the cup body, and the first abutment portion is snap-connected to the cover body.

[0011] It is understandable that the buckle structure is provided to facilitate the snap connection. The first abutment portion can be tightly buckled with the cover body under the action of the elastic force of the elastic portion, thereby effectively limiting and locking the cover body. Under the action of negative pressure, the first abutment portion is unlocked from the cover body. At the same time, the elastic portion can reset the first abutment portion through the elastic force when there is no air pressure, so as to facilitate re-locking the cover body.

[0012] In one embodiment, the first abutment portion is configured with an abutment surface, and the cup body is radially and axially arranged at an angle to the abutment surface respectively; the cover body is configured with a mating surface, and the mating surface can be fitted with the abutment surface to form a lock, and the abutment surface is configured to rotate around the rotating shaft to move away from the mating surface in response to the first pressure difference.

[0013] It is understandable that the mechanical limit is formed by the abutment surface and the matching surface being fitted together, which is effective and reliable. Moreover, the abutment surface rotates around the rotation axis under the action of the first gas pressure to unlock the cover body, which is easy to operate.

[0014] In one of the embodiments, in the dust collecting section, the air inlet is configured to open in response to the opening of the cover, and the air inlet can be connected to the first dust collecting chamber and the second dust collecting chamber.

[0015] It is understandable that before the cover is opened, the air inlet is closed so that the first suction power source can extract the gas in the second dust collecting chamber to form a negative pressure. After the cover is opened, the air inlet is also opened so that the first suction power source can suck the external air through the air inlet, and the external air passes through the bottom of the first dust collecting chamber and further brings the dust into the second dust collecting chamber, further improving the dust collection efficiency.

[0016] In one embodiment, the first suction power source is arranged in the dust collection component; the dust collection component also includes a first air duct and a second air duct, the first air duct is located in the dust cup, and the second air duct is located outside the dust cup; the cleaning device has a dust collection stage and a dust collection stage; in the dust collection stage, the air inlet of the dust collection component, the first air duct, the first suction power source and the first air outlet are connected; in the dust collection stage, the second dust collecting chamber, the second air duct, the first suction power source and the first air outlet are connected.

[0017] It is understandable that two different air ducts are provided to meet the needs under different working conditions. Specifically, under the working conditions of the dust collection stage, the first suction power source can suck the external air through the air inlet, and after the external air passes through the first air duct, the dust in the air falls into the dust cup, and the gas is separated from the dust and discharged from the first air outlet through the first suction power source. In the dust collection stage, the first suction power source can extract the gas in the second dust collecting chamber through the second air duct to form a negative pressure, and the gas in the second dust collecting chamber passes through the second air duct and the first suction power source and is discharged from the air outlet of the cleaning device.

[0018] In one embodiment, the dust collection component includes an air duct switching component, which is installed between the first air duct and the second air duct, and is used to switch one of the first air duct and the second air duct to be open and the other to be closed.

[0019] It can be understood that, by providing an air duct switching component to switch between the first air duct and the second air duct, the requirements for different air ducts in the dust suction stage and the dust collection stage can be met.

[0020] In one embodiment, the air duct switching assembly includes a rotating cover plate, the rotating cover plate has a rotating axis, and along the radial direction of the rotating axis, the portion located on one side of the rotating axis is defined as a first blocking portion, and the other side is defined as a second blocking portion; the first blocking portion is used to block the first air duct, and the second blocking portion is used to block the second air duct, and the rotating cover plate switches the first blocking portion or the second blocking portion for blocking by rotating around the rotating axis.

[0021] It can be understood that by rotating the cover plate around the rotating shaft, the first blocking part can be switched to block the first air duct, and the second air duct is opened to facilitate dust collection; by switching the second blocking part to block the second air duct, the first air duct is opened to facilitate dust collection. This arrangement has a simple structure and is easy to perform switching operations.

[0022] In one embodiment, the cleaning device includes a cyclone separation structure, which is installed in a dust cup. The inner cavity of the cyclone separation structure is connected to the dust cup and forms the first air duct; the channel between the dust cup and the air inlet of the dust suction assembly forms the second air duct.

[0023] It can be understood that the inner cavity of the cyclone separation structure can form a first air duct to facilitate the passage of gas. At the same time, the cyclone separation structure can separate dust in the gas from the gas and make the dust fall into the dust cup.

[0024] In one embodiment, the air duct switching assembly includes a first elastic member, which is installed between the first blocking portion and the cyclone separation structure; the air duct switching assembly also includes a top contact member, one end of which is connected to the second blocking portion; the first elastic member is configured to lift up the first blocking portion in response to the separation of the dust suction assembly and the dust collecting assembly; the top contact member is configured to lift up the second blocking portion in response to the docking of the dust suction assembly and the dust collecting assembly.

[0025] It can be understood that the first elastic member has an elastic effect on the first blocking portion. During the dust suction stage, the dust suction component and the dust collecting component, the first elastic member can lift the first blocking portion through its own elastic force to achieve the opening of the first air duct. At this time, the second blocking portion blocks the second air duct downward; after the dust suction component and the dust collecting component are docked, the top contact member lifts the second blocking portion to open the second air duct. At this time, the first blocking portion has a downward pressure on the first elastic member, thereby blocking the first air duct.

[0026] In one of the embodiments, the dust collecting assembly is further provided with a second abutment portion, and in the dust collecting stage, the second abutment portion abuts against the top contact member.

[0027] It can be understood that the second abutment portion is arranged so that when the dust suction component is docked with the dust collection component, the second abutment portion can push the top contact piece upward, thereby pushing up the second blocking portion, thereby opening the second air duct.

[0028] In one embodiment, the first suction power source is disposed in the dust collecting assembly, and the first suction power source is connected to the second air outlet.

[0029] It can be understood that such an arrangement enables the first suction power source to directly extract the gas in the second dust collecting chamber, which is easy to operate.

[0030] The present application also provides a dust collection method, which is applied to the above-mentioned cleaning device; the dust collection method includes: docking a dust collecting component with a dust suction component; a first suction power source sucks the gas in the second dust collecting chamber of the dust collecting component to form a negative pressure in the second dust collecting chamber; the cover body is opened under the triggering of the negative pressure, and the first dust collecting chamber and the second dust collecting chamber are connected.

[0031] It can be understood that by sucking the gas in the second dust collecting chamber to form a negative pressure in the second dust collecting chamber, the cover is opened by the negative pressure, and the gas in the first dust collecting chamber will drive dust and garbage into the second dust collecting chamber to improve the dust collection efficiency.

[0032] In one of the embodiments, the first suction power source sucks the gas in the second dust collecting chamber of the dust collecting assembly to form a negative pressure in the second dust collecting chamber, including: a pressure difference is formed between the first dust collecting chamber and the second dust collecting chamber of the dust suction assembly, and the gas pressure in the first dust collecting chamber is greater than the gas pressure in the second dust collecting chamber; the cover body is opened when triggered by the negative pressure, including: when the pressure difference between the first dust collecting chamber and the second dust collecting chamber reaches a first pressure difference, the cover body opens.

[0033] It can be understood that when the pressure difference between the first dust collecting chamber and the second dust collecting chamber reaches a first pressure difference, there is a sufficiently large air pressure in the first dust collecting chamber to push the cover to open, so that there is sufficient impact force to bring the dirt in the first dust collecting chamber into the second dust collecting chamber, so that no dust and garbage is left in the first dust collecting chamber, thereby improving the dust collection efficiency.

[0034] In one of the embodiments, the dust collection method further includes: before the cover body is opened, the air inlet of the dust collection assembly is closed; after the cover body is opened, the air inlet is opened, and the air inlet is connected to the first dust collecting chamber and the second dust collecting chamber.

[0035] It can be understood that with such an arrangement, after the cover is opened, external air can be sucked in through the air inlet, the external air enters the second dust collecting chamber and passes through the bottom of the first dust collecting chamber, and can bring the dust and garbage at the bottom of the first dust collecting chamber into the second dust collecting chamber to promote the dust collection efficiency.

[0036] The present application also provides a dust collection method, which is applied to a cleaning device, wherein the cleaning device is provided with a first dust collecting chamber and a second dust collecting chamber that can be selectively connected, and the cleaning device includes a dust cup, which forms the first dust collecting chamber. The dust collection method includes: sucking gas in the second dust collecting chamber to form a negative pressure in the second dust collecting chamber; the cover of the dust cup is opened under the negative pressure, and the first dust collecting chamber and the second dust collecting chamber are connected.

[0037] It can be understood that by sucking the gas in the second dust collecting chamber to form a negative pressure in the second dust collecting chamber, the cover is opened by the negative pressure, and the gas in the first dust collecting chamber will drive dust and garbage into the second dust collecting chamber to improve the dust collection efficiency.

[0038] In one embodiment, the step of sucking the gas in the second dust collecting chamber to form a negative pressure in the second dust collecting chamber includes: forming a pressure difference between the first dust collecting chamber and the second dust collecting chamber, and the gas pressure in the first dust collecting chamber is greater than the gas pressure in the second dust collecting chamber; the cover of the dust cup is opened under the negative pressure, including: when the pressure difference between the first dust collecting chamber and the second dust collecting chamber reaches a first pressure difference, the cover is opened.

[0039] It can be understood that when the pressure difference between the first dust collecting chamber and the second dust collecting chamber reaches a first pressure difference, there is a sufficiently large air pressure in the first dust collecting chamber to push the cover to open, so that there is sufficient impact force to bring the dirt in the first dust collecting chamber into the second dust collecting chamber, so that no dust and garbage is left in the first dust collecting chamber, thereby improving the dust collection efficiency.

[0040] In one embodiment, the cleaning device is provided with an air inlet connected to the first dust collecting chamber, and the dust collection method further includes: before the cover body is opened, the air inlet of the dust suction assembly is closed; after the cover body is opened, the air inlet is opened, and the air inlet is connected to the first dust collecting chamber and the second dust collecting chamber.

[0041] It can be understood that with such an arrangement, after the cover is opened, external air can be sucked in through the air inlet, the external air enters the second dust collecting chamber and passes through the bottom of the first dust collecting chamber, and can bring the dust and garbage at the bottom of the first dust collecting chamber into the second dust collecting chamber to promote the dust collection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0043] Figure 1 A schematic diagram of the structure of the cleaning device provided in the present application in Example 1;

[0044] Figure 2 A cross-sectional view of a dust collection component of a cleaning device provided by the present application under a first embodiment;

[0045] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0046] Figure 4 for Figure 2 A partial cross-sectional view of the middle air duct switching assembly;

[0047] Figure 5 A cross-sectional view of a dust collection component of the cleaning device provided by the present application in another situation in the first embodiment;

[0048] Figure 6 for Figure 5 A partial cross-sectional view of the middle air duct switching assembly;

[0049] Figure 7 A cross-sectional view of a dust collecting assembly in the first embodiment of the cleaning device provided in the present application;

[0050] Figure 8 A schematic diagram of the structure of the cleaning device provided in the present application in the second embodiment;

[0051] Fig. 9 A schematic diagram of the structure of the cleaning device provided in the present application in the third embodiment;

[0052] Fig.10 A cross-sectional view of the dust collection component of the cleaning device provided in the present application in Example 3.

[0053] Reference numerals: 100, cleaning device; 1001, first air duct; 1002, second air duct; 1003, air inlet; 1004, first air outlet; 1005, second air outlet; 1006, return air duct; 1007, air inlet duct; 1008, third air duct; 10, dust suction assembly; 11, dust cup; 101, first dust collecting chamber; 111, cup body; 112, cover body; 1121, first end; 1122, second end; 11221, mating surface; 12, cyclone separation structure; 13, filter cotton; 20, dust collecting assembly; 21, second abutting portion; 22, dust collecting shell; 23, dust collecting bag; 24, dust collecting body; 241. collecting chamber; 25. connecting pipe; 201. second dust collecting chamber; 202. chamber opening; 31. first suction power source; 32. second suction power source; 40. air duct switching assembly; 41. rotating cover plate; 411. rotating shaft; 412. first blocking portion; 413. second blocking portion; 42. second elastic member; 43. top contact member; 50. locking structure; 51. first abutting portion; 511. abutting surface; 52. elastic portion; 521. first elastic member; 522. connecting surface; 53. rotating shaft; 61. first shielding structure; 62. second shielding structure; 63. sealing plate; 601. first flow opening; 602. second flow opening. DETAILED DESCRIPTION

[0054] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0055] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0056] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0057] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0058] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0059] See also Figures 1 to 10 The present application provides a cleaning device 100, which includes a dust suction component 10, a dust collecting component 20 and a first suction power source 31; the dust suction component 10 includes a dust cup 11, the dust cup 11 includes a cup body 111 and a cover body 112 movably connected to the cup body 111, the cup body 111 and the cover body 112 surround a first dust collecting chamber 101; the dust collecting component 20 includes a second dust collecting chamber 201; the first suction power source 31 is arranged in the dust suction component 10 or the dust collecting component 20, and is used to form a negative pressure in the second dust collecting chamber 201, and the cover body 112 is configured to open relative to the cup body 111 under the triggering of negative pressure, so that the first dust collecting chamber 101 and the second dust collecting chamber 201 are connected; wherein the cleaning device 100 has a dust collecting stage, and in the dust collecting stage, the dust cup 11 is docked with the second dust collecting chamber 201. Specifically, the second dust collecting chamber 201 has a cavity opening 202 , and the dust cup 11 is connected to the second dust collecting chamber 201 through the cavity opening 202 .

[0060] In this way, the dust collecting assembly 10 can suck the gas with dust into the first dust collecting chamber 101, separate the dust and gas in the first dust collecting chamber 101, and make the clean gas discharge from the dust collecting assembly 10 while the dust is collected in the dust cup 11. Then, the dust collecting assembly 10 is docked with the dust collecting assembly 20, and the cleaning device 100 starts the dust collecting stage. The gas in the second dust collecting chamber 201 can be extracted through the first suction power source 31, so that the air pressure in the second dust collecting chamber 201 is less than the air pressure in the first dust collecting chamber 101, so as to form a pressure difference, and then the gas in the first dust collecting chamber 101 exerts a strong effect on the cover 112. When the pressure difference reaches a certain value, the air pressure in the first dust collecting chamber 101 causes the cover 112 to open, and the gas rushes out of the first dust collecting chamber 101 and can drive the dust into the second dust collecting chamber 201, that is, by forming a negative pressure, the dust can be taken out while the cover 112 is opened, and the structure for opening the cover 112 can be reduced, making the whole machine structure simpler. In this process, the gas in the first dust collecting chamber 101 has a concentrated and large gas pressure, which can completely bring the dust into the second dust collecting chamber 201, and has a good dust collecting effect. In addition, the gas in the first dust collecting chamber 101 is concentrated and rushed into the second dust collecting chamber 201, which can reduce the turbulence caused by the gas entering the second dust collecting chamber 201 and improve the dust collection efficiency.

[0061] In the embodiment of the present application, the pressure difference between the first dust collecting chamber 101 and the second dust collecting chamber 201 improves the dust collecting efficiency and enables the cover 112 to open automatically, so the relevant structure of the cover 112 is first described.

[0062] like Figure 2 and Figure 3 As shown, in an optional embodiment, along the radial direction of the dust cup 11, the cover body 112 has a first end 1121 and a second end 1122 that are relatively arranged, the first end 1121 is movably connected to the cup body 111, and the second end 1122 can be opened relative to the cup body 111 under the triggering of negative pressure. In this way, the air pressure of the first dust collecting chamber 101 can make the second end 1122 relatively far away from the cup body 111, so that the cover body 112 automatically opens without the cooperation of other structures. After the cover body 112 is opened, the first end 1121 can always remain connected to the cup body 111, so that after the dust collection is completed, it is only necessary to reconnect the second end 1122 to the cup body 111 to achieve the sealing of the cover body 112 relative to the cup body 111, so as to facilitate the dust collection work again.

[0063] like Figure 2 and Figure 3As shown, in a further embodiment, the first end 1121 is rotatably connected to the cup body 111, the second end 1122 is snap-connected to the cup body 111, and the second end 1122 is configured to unlock from the cup body 111 in response to the pressure difference between the first dust collecting chamber 101 and the second dust collecting chamber 201 reaching a first pressure difference.

[0064] In this way, the cup body 111 is connected by a snap-fit ​​connection to limit and lock the cover body 112, which is simple to operate and can be unlocked by air pressure. Specifically, when the pressure difference between the first dust collecting chamber 101 and the second dust collecting chamber 201 reaches the first pressure difference, the first dust collecting chamber 101 has sufficient air pressure to push the cover body 112, so that the second end 1122 of the cover body 112 gradually separates from the cup body 111 under the action of air pressure to achieve the unlocking of the snap-fit ​​connection, and the entire cover body 112 opens relative to the cup body 111, and the cover body 112 rotates around the rotating shaft of the first end 1121. After dust collection is completed, the dust collection component 10 is separated from the dust collection component 20, and the second end 1122 of the cover body 112 can be manually rotated toward the cup body 111, and the snap-fit ​​connection with the cup body 111 is achieved again under the action of external force. In other embodiments, a pressure sensor may also be installed in the dust cup 11. After the pressure sensor senses that the air pressure in the first dust collecting chamber 101 reaches a predetermined value, the cover body 112 and the cup body 111 may be unlocked.

[0065] In some embodiments, when the pressure difference between the first dust collecting chamber 101 and the second dust collecting chamber 201 is set to 4 kPa, the gas in the first dust collecting chamber 101 has sufficient gas pressure to open the cover 112. In other embodiments, the corresponding pressure difference value can also be set according to the conditions for opening the cover 112, which is not specifically limited here. Furthermore, the first suction power source 31 can perform multiple suctions on the gas in the second dust collecting chamber 201 to gradually reach an ideal pressure difference value. Exemplarily, after the first suction power source 31 is turned on and operated for a first time, the first suction power source 31 enters a standby state. After the second time of standby, the first suction power source 31 continues to suck and continues for the first time, and so on, until the power-on and standby actions are repeated n times and then end. Wherein, n≥2, n is an integer, for example, n can be set to 2, 3 or 4, as long as the set pressure difference value is met.

[0066] like Figure 2 and Figure 3 As shown, in a specific embodiment, the dust collection assembly 10 includes a locking structure 50, which is rotatably connected to the cup body 111. The locking structure 50 includes an elastic portion 52 and a first abutting portion 51 that are spaced apart. The elastic portion 52 and the first abutting portion 51 are respectively arranged at two ends of a rotating shaft 53 of the locking structure 50. The elastic portion 52 is elastically connected to the cup body 111, and the first abutting portion 51 is snap-connected to the cover body 112.

[0067] In this way, by installing the lock structure 50 on the cup body 111, the snap connection with the cover body 112 is realized, and the operation is simple. Among them, the lock structure 50 can switch the unlocking and locking of the cover body 112 by rotating around the rotating shaft 53. The elastic part 52 is away from the cup body 111 under the action of the elastic force. Since the elastic part 52 and the first abutting part 51 are respectively arranged at both ends of the rotating shaft 53, at this time, the first abutting part 51 is close to the cover body 112 under the action of the elastic force of the elastic part 52, so as to abut against the cover body 112 to achieve the locking of the cover body 112; under the action of the air pressure in the first dust collecting chamber 101, the first abutting part 51 can rotate around the circumference of the rotating shaft 53 toward the side away from the cover body 112. At this time, the elastic part 52 has a reverse elastic force, that is, the elastic part 52 has a tendency to rebound. After the air pressure disappears, the elastic force of the elastic part 52 is released to reset the first abutting part 51.

[0068] like Figure 2 and Figure 3 As shown, specifically, the elastic part 52 includes a connecting surface 522 and a first elastic member 521, and the first elastic member 521 is arranged between the connecting surface 522 and the cup body 111. The first elastic member 521 has an elastic force on the connecting surface 522 away from the cup body 111 along the radial direction of the cup body 111, so that the locking structure 50 rotates around its own rotation axis 53 along the first circumferential direction, and then the first abutting part 51 moves toward the cover body 112 and abuts against the cover body 112 to form a lock. After the first abutting part 51 is unlocked from the cover body 112, the first abutting part 51 rotates around the rotation axis 53 in the direction opposite to the first circumferential direction, exerting a squeezing force on the first elastic member 521, so after the air pressure disappears, the first elastic member 521 rebounds to reset the first abutting part 51. Exemplarily, the first elastic member 521 can be set as a spring.

[0069] like Figure 2 and Figure 3 As shown, in a more specific embodiment, the first abutting portion 51 is configured with an abutting surface 511, and the cup body 111 is radially and axially arranged at an angle to the abutting surface 511; the cover body 112 is configured with a matching surface 11221, and the matching surface 11221 can be fitted to the abutting surface 511 to form a lock, that is, the abutting surface 511 and the matching surface 11221 are both arranged as inclined surfaces, and the abutting surface 511 is configured to rotate around the rotating shaft 53 in response to the first pressure difference to move away from the matching surface 11221. In this way, the cover body 112 is limited and supported by the abutting surface 511 and the matching surface 11221 fitting together, with a large limiting area and sufficient limiting reliability.

[0070] like Figure 3As shown, it should be noted that there is no self-locking angle between the abutment surface 511 and the straight line perpendicular to the abutment surface 511, so that when the action of the air pressure is transmitted to the abutment surface 511, it can be decomposed into a force F1 radially outward along the cup body 111 and a force F2 axially toward the dust collecting component 20 along the cup body 111, so that the locking structure 50 has a tendency to rotate toward the first elastic member 521, so that the locking structure 50 can rotate under the push of the air pressure, so that the abutment surface 511 is away from the cover body 112 to achieve unlocking.

[0071] After the dust collection stage is over, the dust collection assembly 10 is separated from the dust collection assembly 20, and the cover 112 is manually rotated back to its original position. The cover 112 exerts a squeezing force on the locking structure 50 toward the first dust collection chamber 101, the first elastic member 521 is stretched, and the abutting surface 511 moves toward the first dust collection chamber 101. When the manual thrust is large enough, the cover 112 can slide over the surface of the locking structure 50 and be squeezed into the first dust collection chamber 101. When the hand is released, the mating surface 11221 of the cover 112 and the abutting surface 511 can be re-engaged and locked.

[0072] Next, the present application provides two different embodiments for extracting the gas in the second dust collecting chamber 201 , which are described in detail below.

[0073] Embodiment 1:

[0074] like Figure 1 and 2 As shown, in an optional embodiment, the first suction power source 31 is arranged in the dust collection component 10; the dust collection component 10 also includes a first air duct 1001 and a second air duct 1002, the first air duct 1001 is located in the dust cup 11, and the second air duct 1002 is located outside the dust cup 11; the cleaning device 100 has a dust collection stage and a dust collection stage; in the dust collection stage, the air inlet 1003 of the dust collection component 10, the first air duct 1001, the first suction power source 31 and the first air outlet 1004 of the dust collection component 10 are connected; in the dust collection stage, the second dust collecting chamber 201, the second air duct 1002, the first suction power source 31 and the first air outlet 1004 of the cleaning device 100 are connected.

[0075] In this way, by setting the first air duct 1001 and the second air duct 1002 independently of each other to achieve switching between different working conditions, the first suction power source 31 can not only suck external air in the dust suction stage, but also suck the air in the second dust collecting chamber 201 to form negative pressure for dust collection in the dust collection stage, thereby achieving the effect of serving two purposes in one. There is no need to set up an additional power source for gas suction in the cleaning device 100 to save space.

[0076] Specifically, Figure 5As shown, in the dust collection stage, the first suction power source 31 can draw air into the cleaning device 100 through the air inlet 1003, and the gas with dust enters the first air duct 1001 from the air inlet 1003, and the dust and gas are separated in the first air duct 1001. The clean gas is then discharged from the first air outlet 1004 through the first suction power source 31 to clean the dust on the ground. Figure 1 , Figure 2 and Figure 7 As shown, the air inlet 1003 is in a closed state at the beginning, and the first suction power source 31 can extract the gas in the second dust collecting chamber 201. The gas in the second dust collecting chamber 201 passes through the second air duct 1002, and then passes through the first suction power source 31 and is discharged from the first air outlet 1004, so that the second dust collecting chamber 201 is in a negative pressure state.

[0077] In a further embodiment, in the dust collection stage; the air inlet 1003 is configured to open in response to the opening of the cover 112, and the air inlet 1003 can be connected to the first dust collection chamber 101 and the second dust collection chamber 201. In a specific embodiment, the dust collection assembly 10 also includes an air inlet duct 1007, and the air inlet 1003 is arranged in the air inlet duct 1007, and the air inlet duct 1007 is connected to the first air duct 1001 or the second air duct 1002. In this way, in the dust collection stage, before the cover 112 is opened, the air inlet 1003 is in a closed state, so as to form a closed space, so that the gas in the second dust collection chamber 201 is extracted by the first suction power source 31 in the dust collection assembly 10. Further, the cover 112 opens under the pressure difference between the first dust collection chamber 101 and the second dust collection chamber 201, and the gas in the first dust collection chamber 101 drives the dust to enter the second dust collection chamber 201, thereby realizing the first dust collection. After the cover 112 is opened, the air inlet 1003 is also opened. At this time, the first suction power source 31 can continue to suck external air, and the external air passes through the bottom of the first dust collecting chamber 101 and enters the second dust collecting chamber 201. Then, the air flows from the second dust collecting chamber 201 into the second air duct 1002 and flows out from the first air outlet 1004, so as to bring the dust at the bottom of the first dust collecting chamber 101 into the second dust collecting chamber 201, thereby realizing the second dust collection. In summary, the dust collection effect is improved through the impact of two air flows.

[0078] like Figure 1 and Figure 2As shown, in a further embodiment, the dust collection assembly 20 further includes a return air duct 1006, which is connected between the second dust collection chamber 201 and the second air duct 1002. In the dust collection stage, when the cover 112 is not opened, the gas in the second dust collection chamber 201 enters the second air duct 1002 through the return air duct 1006, so as to facilitate the suction of the first suction power source 31. After the cover 112 is opened, the air sucked from the air inlet 1003 passes through the first dust collection chamber 101 and then enters the second dust collection chamber 201. After dust collection, the gas in the second dust collection chamber 201 is separated from the dust, and the air passes through the return air duct 1006, the second air duct 1002 and the first suction power source 31 in sequence, and finally flows out from the first air outlet 1004.

[0079] In some embodiments, the first suction power source 31 can be set to a motor, a fan, etc., as long as the suction of gas can be achieved.

[0080] like Figure 2 and Figure 5 As shown, more specifically, the first air duct 1001 and the second air duct 1002 are arranged at intervals along the radial direction of the dust cup 11. Along the axial direction of the dust cup 11, filter cotton 13 can be arranged between the first suction power source 31 and the first air duct 1001, and between the first suction power source 31 and the second air duct 1002, so as to further filter and remove dust from the gas to make the gas cleaner. The filter cotton 13 can be arranged with more than two layers, and the filter cotton 13 can also be replaced with other parts that can filter dust, such as a filter net.

[0081] like Figure 2 and Figure 5 As shown, in some embodiments, the cleaning device 100 includes a cyclone separation structure 12, and the cyclone separation structure 12 is installed in the dust cup 11. The inner cavity of the cyclone separation structure 12 is connected to the dust cup 11 and forms a first air duct 1001; the channel between the dust cup 11 and the air inlet 1003 forms a second air duct 1002. In this way, the cyclone separation structure 12 can separate dust and gas to purify the gas, and the inner cavity of the cyclone separation structure 12 is set as the first air duct 1001 to facilitate the separation operation. Specifically, the cyclone separation structure 12 is set as a cyclone cone. When the gas and dust touch the side wall of the cyclone cone, the dust will rotate downward along the side wall, and the gas will be sucked up under the action of the first suction power source 31, thereby achieving the separation of dust and gas.

[0082] like Figures 2 to 6As shown, in a further embodiment, the cleaning device 100 includes an air duct switching component 40, which is installed between the first air duct 1001 and the second air duct 1002. The air duct switching component 40 is used to switch one of the first air duct 1001 and the second air duct 1002 to open and the other to close. In this way, the setting of the air duct switching component 40 can make it more convenient to switch the first air duct 1001 and the second air duct 1002. When the cleaning device 100 is in the dust collection stage, the air duct switching component 40 is controlled to open the first air duct 1001, and when the cleaning device 100 is in the dust collection stage, the air duct switching component 40 is controlled to open the second air duct 1002 and close the first air duct 1001.

[0083] like Figures 2 to 6 As shown, in a further embodiment, the air duct switching component 40 includes a rotating cover plate 41, the rotating cover plate 41 has a rotating shaft 411, and along the radial direction of the rotating shaft 411, the part located on one side of the rotating shaft 411 is defined as a first blocking portion 412, and the other side is defined as a second blocking portion 413; the first blocking portion 412 is used to block the first air duct 1001, and the second blocking portion 413 is used to block the second air duct 1002, and the rotating cover plate 41 switches the first blocking portion 412 or the second blocking portion 413 for blocking by rotating around the rotating shaft 411, so as to realize the switching of the first air duct 1001 and the second air duct 1002. Specifically, in the dust collection stage, the rotating cover plate 41 rotates to the second blocking portion 413 to block the second air duct 1002, at which time the first blocking portion 412 cancels the blocking of the first air duct 1001, and the first air duct 1001 is opened; in the dust collection stage, the rotating cover plate 41 rotates to the first blocking portion 412 to block the first air duct 1001, at which time the second blocking portion 413 cancels the blocking of the second air duct 1002, and the second air duct 1002 is opened. Further, sealing rings can be installed on the side of the first blocking portion 412 facing the first air duct 1001 and the side of the second blocking portion 413 facing the second air duct 1002, respectively, so as to achieve good air tightness during blocking.

[0084] like Figures 2 to 6As shown, in a specific embodiment, the air duct switching assembly 40 includes a second elastic member 42, which is installed between the first blocking portion 412 and the cyclone separation structure 12; the air duct switching assembly 40 also includes a top contact member 43, one end of which is connected to the second blocking portion 413; the second elastic member 42 is configured to lift up the first blocking portion 412 in response to the separation of the dust suction assembly 10 and the dust collection assembly 20; the top contact member 43 is configured to lift up the second blocking portion 413 in response to the docking of the dust suction assembly 10 and the dust collection assembly 20. In this way, in the dust suction stage, the dust suction assembly 10 and the dust collection assembly 20 are separated, and the second elastic member 42 has an elastic force on the first blocking portion 412, which can lift up the first blocking portion 412 to realize the opening of the first air duct 1001, and make the second blocking portion 413 block the second air duct 1002 downward. After the dust suction component 10 and the dust collection component 20 are docked, the top contact member 43 can overcome the elastic force of the second elastic member 42 to lift the second blocking portion 413, thereby opening the second air duct 1002, and the first blocking portion 412 blocks the first air duct 1001 under the pressure of the top contact member 43. The second elastic member 42 and the top contact member 43 respectively apply force to the rotating cover plate 41 to achieve blocking, which is easy to operate. For example, the second elastic member 42 can be selected as a spring, and the top contact member 43 can be selected as a push rod. In other embodiments, other parts can also be selected according to actual conditions, as long as the above-mentioned effects are achieved.

[0085] like Figure 2 and Figure 7 As shown, in a more specific embodiment, the dust collecting component 20 is further provided with a second abutting portion 21, and in the dust collecting stage, the second abutting portion 21 abuts against the top contact member 43. In this way, in the dust collecting stage, the dust collecting component 10 needs to be docked and matched with the dust collecting component 20, so as to collect the dust in the dust cup 11 into the second dust collecting chamber 201. Specifically, the second abutting portion 21 can be configured to be convexly arranged on the end face of the dust collecting component 20 facing the dust collecting component 10. With such a configuration, when docking, the second abutting portion 21 convexly arranged on the docking end face can push the top contact member 43 upward, and the top contact member 43 then transmits the force to the second blocking portion 413, thereby realizing the opening of the second air duct 1002. Exemplarily, the second abutting portion 21 can be configured to be a protruding block, a spring, etc., and it is only necessary to realize the jacking of the top contact member 43.

[0086] like Figure 7 As shown, in an optional embodiment, the dust collection assembly 20 includes a dust collection shell 22 and a dust collection bag 23. The space inside the dust collection shell 22 forms a second dust collection chamber 201. The dust collection bag 23 is installed in the second dust collection chamber 201. The dust collection bag 23 is used to collect dust in the dust cup 11. In this way, the dust collection shell 22 is arranged to facilitate dust collection in the second dust collection chamber 201, and the dust collection bag 23 is arranged to facilitate dust collection, and gas can pass through the dust collection bag 23.

[0087] like Figure 7 As shown, in a specific embodiment, the dust collecting assembly 20 includes a dust collecting body 24, the dust collecting body 24 is docked with the dust collecting assembly 10, and the dust collecting body 24 is provided with a collecting chamber 241, and the collecting chamber 241 is communicated with the second dust collecting chamber 201. After the cover 112 is opened, the first dust collecting chamber 101 can be communicated with the second dust collecting chamber 201 through the collecting chamber 241. The dust collecting body 24 is provided with a dust collecting bag 23 at the opening of the collecting chamber 241, so that dust falls into the dust collecting bag 23 from the first dust collecting chamber 101 through the collecting chamber 241.

[0088] Embodiment 2:

[0089] like Figure 8 As shown, the difference between the second embodiment and the first embodiment is that the first suction power source 31 is arranged in the dust collecting assembly 20, and the dust collecting assembly 10 also includes a second suction power source 32, and the second suction power source 32 is used to connect the external gas with the first dust collecting chamber 101. In other words, the first suction power source 31 in the second embodiment only sucks the gas in the second dust collecting chamber 201, and the dust collecting assembly 10 sucks the external gas with dust through the second suction power source 32. In this way, the first suction power source 31 and the second suction power source 32 can suck the gas independently, and the operation is simple. Specifically, the first suction power source 31 is arranged at the bottom of the dust collecting shell 22, avoiding the dust collecting bag 23. At the same time, a filter cotton can be arranged outside the exhaust port of the first suction power source 31 to facilitate filtering the gas, so that the gas is discharged cleanly, reducing dust, and the filtered gas flows out from the second air outlet 1005.

[0090] In this embodiment, when the first suction power source 31 extracts the gas in the second dust collecting chamber 201, the air inlet is closed, and the cover 112 is opened under the action of the gas pressure in the first dust collecting chamber 101, and the gas in the first dust collecting chamber 101 rushes into the second dust collecting chamber 201 with the dust, so as to achieve the first dust collection. After the cover 112 is opened, the air inlet is also opened, and the second suction power source 32 sucks the external gas from the air inlet. The external gas passes through the dust cup 11 and drives the remaining dust into the second dust collecting chamber 201 to achieve the second dust collection, which is conducive to improving the dust collection efficiency. In addition, such a setting can also realize dust collection at the same time as the secondary dust collection. When the external gas enters the interior of the dust collecting assembly 10, it also brings the external dust into the dust collecting assembly 10, and the external dust and the original dust in the first dust collecting chamber 101 enter the second dust collecting chamber 201 together.

[0091] In this embodiment, there is no need to additionally provide the second air duct 1002, the air duct switching assembly 40 and the return air duct 1006, which is conducive to maintaining the original structure of the dust collection assembly 10. Except for the above content, the content of the second embodiment is substantially the same as that of the first embodiment, and can refer to the first embodiment, which will not be repeated here.

[0092] Embodiment 3

[0093] like Fig. 9 and Fig.10 As shown, the difference between the present application and the first embodiment is that the structure of the air duct switching is different. In the present embodiment, the dust collection assembly 10 includes a first shielding structure 61, a second shielding structure 62 and a sealing plate 63, and the first shielding structure 61 and the second shielding structure 62 are arranged at an angle. The first shielding structure 61 is arranged between the dust cup 11 and the first suction power source 31, and can block the airflow along the axial direction of the dust cup 11 in the first air duct 1001. The first shielding structure 61 is provided with a first flow opening 601 at a relative position of the second air duct 1002, and the airflow in the second air duct 1002 can enter the first suction power source 31 through the first flow opening 601; the second shielding structure 62 is arranged between the first air duct 1001 and the second air duct 1002, and can block the airflow along the radial direction of the dust cup 11. A second flow opening 602 is provided between the first shielding structure 61 and the second shielding structure 62, and the first air duct 1001 and the second air duct 1002 can flow through the second flow opening 602.

[0094] Further, the sealing plate 63 can block the opening of the second air duct 1002 away from the first circulation port 601, and open when the dust collection assembly 10 and the dust collection assembly 20 are docked. The dust collection assembly 20 also includes a connecting pipe 25, and the space inside the connecting pipe 25 forms a third air duct 1008. The third air duct 1008 is communicated with the second dust collection chamber 201. After the dust collection assembly 10 and the dust collection assembly 20 are docked, the connecting pipe 25 extends into the second air duct 1002, and one end away from the second dust collection chamber 201 along its own axial direction is blocked at the second circulation port 602, and is communicated with the first circulation port 601. In a specific embodiment, a sealing member is provided between the connecting pipe 25 and the first shielding structure 61 to achieve sealing between the connecting pipe 25 and the first shielding structure 61, so as to avoid gas leakage at the first circulation port 601.

[0095] During the vacuuming stage, the first suction power source 31 can suck in external air through the first flow port 601, the second flow port 602 and the air inlet 1003. The external air enters the first air duct 1001 from the air inlet 1003, and the gas and dust are separated in the first air duct 1001. The dust falls into the dust cup 11, and the gas separated from the dust passes through the second flow port 602, the second flow port 602 and the first suction power source 31, and finally flows out from the first air outlet 1004.

[0096] In the dust collection stage, the dust collection assembly 10 and the dust collection assembly 20 are docked, and the sealing plate 63 is opened. At this time, the first air duct 1001 is blocked by the connecting pipe 25, and the cover 112 is in a closed state. The first suction power source 31 can extract the gas in the second dust collection chamber 201 through the first circulation port 601 and the third air duct 1008, so that the second dust collection chamber 201 is in a negative pressure state, so that the gas in the first dust collection chamber 101 unlocks the cover 112 through the air pressure and rushes out of the first dust collection chamber 101, so as to bring the dust into the second dust collection chamber 201. After the gas is separated from the dust in the second dust collection chamber 201, it can pass through the third air duct 1008, the second air duct 1002, the first circulation port 601 and the first suction power source 31 in sequence, and finally be discharged from the first air outlet 1004.

[0097] In the embodiment of the present application, the second air duct 1002 is a passage between the dust cup 11 and the housing of the dust collection assembly 10. Specifically, one end of the sealing plate 63 is rotatably connected to the housing, and the other end is snap-connected to the dust cup 11. The dust collection assembly 20 is provided with a push plate. When the dust collection assembly 10 and the dust collection assembly 20 are docked, the push plate can push the sealing plate 63 to unlock the sealing plate 63.

[0098] Except for the above contents, the contents of the second embodiment are substantially the same as those of the first embodiment, and reference may be made to the first embodiment, which will not be described in detail here.

[0099] The present application also provides a dust collection method, which is applied to the above-mentioned cleaning device; the dust collection method includes: docking the dust collecting component 20 with the dust suction component 10; the first suction power source 31 sucks the gas in the second dust collecting chamber 201 of the dust collecting component 20 to form a negative pressure in the second dust collecting chamber 201; the cover body 112 is opened under the triggering of negative pressure, and the first dust collecting chamber 101 and the second dust collecting chamber 201 are connected.

[0100] In this way, by sucking the gas in the second dust collecting chamber 201 to form a negative pressure in the second dust collecting chamber 201, the cover 112 can be opened, and the gas in the first dust collecting chamber 101 can drive the dust in the first dust collecting chamber 101 into the second dust collecting chamber 201. Under the action of the gas pressure, the dust can be concentrated and flushed into the second dust collecting chamber 201, which is beneficial to improve the dust collection efficiency.

[0101] Specifically, the first suction power source 31 sucks the gas in the second dust collecting chamber 201 of the dust collecting component 20 to form a negative pressure in the second dust collecting chamber 201, including: a pressure difference is formed between the first dust collecting chamber 101 and the second dust collecting chamber of the dust suction component 10, the gas pressure in the first dust collecting chamber 101 is greater than the gas pressure in the second dust collecting chamber 201, that is, a pressure difference is generated between the two, and when the pressure difference reaches the first pressure difference, the gas pressure in the first dust collecting chamber 101 can open the cover 112.

[0102] In some embodiments, when the pressure difference between the first dust collecting chamber 101 and the second dust collecting chamber 201 is set to 4 kPa, the gas in the first dust collecting chamber 101 has sufficient gas pressure to open the cover 112. In other embodiments, the corresponding pressure difference value can also be set according to the conditions for opening the cover 112, which is not specifically limited here. Furthermore, the first suction power source 31 can perform multiple suctions on the gas in the second dust collecting chamber 201 to gradually reach an ideal pressure difference value. Exemplarily, after the first suction power source 31 is turned on and operated for a first time, the first suction power source 31 enters a standby state. After the second time of standby, the first suction power source 31 continues to suck and continues for the first time, and so on, until the power-on and standby actions are repeated n times and then end. Wherein, n≥2, n is an integer, for example, n can be set to 2, 3 or 4, as long as the set pressure difference value is met.

[0103] In a further embodiment, the dust collection method also includes: before the cover body 112 is opened, the air inlet 1003 of the dust collection assembly 10 is closed; after the cover body 112 is opened, the air inlet 1003 is opened, and the air inlet 1003 is connected to the first dust collecting chamber 101 and the second dust collecting chamber 201.

[0104] Thus, before the cover 112 is opened, the air inlet 1003 is closed to keep the cleaning device in a sealed state, which is beneficial for concentrated suction of the gas in the second dust collecting chamber 201, so that the second dust collecting chamber 201 quickly reaches a negative pressure state. After the cover 112 is flushed open by the gas in the first dust collecting chamber 101, the air inlet 1003 is opened, and external air can be sucked into the cleaning device, and the remaining dust at the bottom of the first dust collecting chamber 101 is further flushed into the second dust collecting chamber 201, further improving the dust collection effect.

[0105] The present application also provides a dust collection method, which is applied to a cleaning device 100. The cleaning device 100 is provided with a first dust collecting chamber 101 and a second dust collecting chamber 201 which can be selectively connected. The cleaning device 100 includes a dust cup 11, and the dust cup 11 forms the first dust collecting chamber 101. The dust collection method includes: sucking gas in the second dust collecting chamber 201 to form a negative pressure in the second dust collecting chamber 201; the cover 112 of the dust cup 11 is opened under the negative pressure, and the first dust collecting chamber 101 and the second dust collecting chamber 201 are connected.

[0106] In this way, by sucking the gas in the second dust collecting chamber 201 to form a negative pressure in the second dust collecting chamber 201, the cover 112 can be opened, and the gas in the first dust collecting chamber 101 can drive the dust in the first dust collecting chamber 101 into the second dust collecting chamber 201. Under the action of the gas pressure, the dust can be concentrated and flushed into the second dust collecting chamber 201, which is beneficial to improve the dust collection efficiency.

[0107] Specifically, sucking the gas in the second dust collecting chamber 201 to form a negative pressure in the second dust collecting chamber 201 includes: forming a pressure difference between the first dust collecting chamber 101 and the second dust collecting chamber 201, the gas pressure in the first dust collecting chamber 101 is greater than the gas pressure in the second dust collecting chamber 201, that is, a pressure difference is generated between the two, and when the pressure difference reaches the first pressure difference, the gas pressure in the first dust collecting chamber 101 can open the cover 112.

[0108] In a further embodiment, the cleaning device 100 is provided with an air inlet 1003 connected to the first dust collecting chamber 101, and the dust collection method further includes: before the cover body 112 is opened, the air inlet 1003 of the dust suction assembly 10 is closed; after the cover body 112 is opened, the air inlet 1003 is opened, and the air inlet 1003 is connected to the first dust collecting chamber 101 and the second dust collecting chamber 201.

[0109] Thus, before the cover 112 is opened, the air inlet 1003 is closed to keep the cleaning device in a closed state, which is conducive to the concentrated suction of the gas in the second dust collecting chamber 201, so that the second dust collecting chamber 201 quickly reaches a negative pressure state. After the cover 112 is flushed open by the gas in the first dust collecting chamber 101, the air inlet 1003 is opened, and the external air can be sucked into the cleaning device 100, and the remaining dust at the bottom of the first dust collecting chamber 101 is further flushed into the second dust collecting chamber 201, further improving the dust collection effect.

[0110] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0111] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. A cleaning device, characterized in that: The cleaning device comprises: A dust collection assembly (10) comprising a dust cup (11), the dust cup (11) comprising a cup body (111) and a cover body (112) movably connected to the cup body (111), the cup body (111) and the cover body (112) surrounding each other to form a first dust collection chamber (101); A dust collecting assembly (20), comprising a second dust collecting chamber (201); and a first suction power source (30), provided in the dust suction component (10) or the dust collection component (20), and used for forming a negative pressure in the second dust collection chamber (201); the cover body (112) is configured to open relative to the cup body (111) under the triggering of the negative pressure, so that the first dust collection chamber (101) and the second dust collection chamber (201) are in communication; The cleaning device has a dust collection stage, and in the dust collection stage, the dust cup (11) is docked with the second dust collection chamber (201).

2. The cleaning device according to claim 1, characterized in that Along the radial direction of the dust cup (11), the cover body (112) has a first end (1121) and a second end (1122) which are arranged opposite to each other, the first end (1121) being movably connected to the cup body (111), and the second end (1122) being capable of opening relative to the cup body (111) under the triggering of the negative pressure.

3. The cleaning device according to claim 2, characterized in that: The first end (1121) is rotatably connected to the cup body (111), the second end (1122) is snap-connected to the cup body (111), and the second end (1122) is configured to be unlocked from the cup body (111) in response to the pressure difference between the first dust collecting chamber (101) and the second dust collecting chamber (201) reaching a first pressure difference.

4. The cleaning device according to claim 3, characterized in that: The dust collecting assembly (10) comprises a locking structure (50), wherein the locking structure (50) is rotatably connected to the cup body (111), and the locking structure (50) comprises an elastic portion (52) and a first abutting portion (51) which are arranged at intervals, wherein the elastic portion (52) and the first abutting portion (51) are arranged at two ends of a rotating shaft (53) of the locking structure (50), the elastic portion (52) is elastically connected to the cup body (111), and the first abutting portion (51) is snap-connected to the cover body (112).

5. The cleaning device according to claim 4, characterized in that: The first abutment portion (51) is configured with an abutment surface (511), and the cup body (111) is radially and axially arranged at an angle to the abutment surface (511); the cover body (112) is configured with a mating surface (11221), and the mating surface (11221) can be fitted to the abutment surface (511) to form a lock, and the abutment surface (511) is configured to rotate around the rotation axis (53) in response to the first pressure difference to move away from the mating surface (11221).

6. The cleaning device according to claim 5, characterized in that: In the dust collecting section, the air inlet (1003) of the dust collecting assembly (10) is configured to open in response to the opening of the cover (112), and the air inlet (1003) can be connected to the first dust collecting chamber (101) and the second dust collecting chamber (201).

7. The cleaning device according to any one of claims 1 to 6, characterized in that: The first suction power source (30) is arranged on the dust suction component (10); The dust collection assembly (10) comprises a first air duct (1001) and a second air duct (1002), wherein the first air duct (1001) is located inside the dust cup (11), and the second air duct (1002) is located outside the dust cup (11); The cleaning device has a dust suction stage and a dust collection stage; in the dust suction stage, the air inlet (1003) of the dust suction component (10), the first air duct (1001), the first suction power source (30) and the first air outlet (1004) of the dust suction component (10) are connected; in the dust collection stage, the second dust collection chamber (201), the second air duct (1002), the first suction power source (30) and the first air outlet (1004) are connected.

8. The cleaning device according to claim 7, characterized in that: The dust collection assembly (10) comprises an air duct switching assembly (40), wherein the air duct switching assembly (40) is installed between the first air duct (1001) and the second air duct (1002), and the air duct switching assembly (40) is used to switch one of the first air duct (1001) and the second air duct (1002) to be opened and the other to be closed.

9. The cleaning device according to claim 8, characterized in that The air duct switching assembly (40) comprises a rotating cover plate (41), the rotating cover plate (41) having a rotating shaft (411), and a portion located on one side of the rotating shaft (411) in a radial direction of the rotating shaft (411) is defined as a first blocking portion (412), and the other side is defined as a second blocking portion (413); The first blocking portion (412) is used to block the first air duct (1001), and the second blocking portion (413) is used to block the second air duct (1002). The rotating cover plate (41) switches between the first blocking portion (412) and the second blocking portion (413) for blocking by rotating around the rotating shaft (411).

10. The cleaning device according to claim 9, characterized in that The cleaning device comprises a cyclone separation structure (12), wherein the cyclone separation structure (12) is installed in a dust cup (11), wherein an inner cavity of the cyclone separation structure (12) is connected to the dust cup (11) and forms the first air duct (1001); and a channel between the dust cup (11) and the air inlet (1003) forms the second air duct (1002).

11. The cleaning device according to claim 10, characterized in that The air duct switching assembly (40) comprises a second elastic member (42), wherein the second elastic member (42) is installed between the first blocking portion (412) and the cyclone separation structure (12); the air duct switching assembly (40) further comprises a top contact member (43), wherein one end of the top contact member (43) is connected to the second blocking portion (413); The second elastic member (42) is configured to lift up the first blocking portion (412) in response to the separation of the dust suction component (10) and the dust collection component (20); and the top contact member (43) is configured to lift up the second blocking portion (413) in response to the docking of the dust suction component (10) and the dust collection component (20).

12. The cleaning device according to claim 11, characterized in that The dust collection assembly (20) is further provided with a second abutment portion (21), and in the dust collection stage, the second abutment portion (21) abuts against the top contact member (43).

13. The cleaning device according to any one of claims 1 to 6, characterized in that: The first suction power source (31) is provided in the dust collecting component (20), and the first suction power source (31) is connected to the second air outlet (1005) of the dust collecting component (20).

14. A dust collection method, characterized in that: A cleaning device applied to any one of claims 1 to 13; the dust collection method comprising: Connecting the dust collecting assembly (20) to the dust suction assembly (10); The first suction power source (30) sucks gas in the second dust collecting chamber (201) of the dust collecting assembly (20) to form a negative pressure in the second dust collecting chamber (201); The cover body (112) is opened when triggered by the negative pressure, and the first dust collecting chamber (101) and the second dust collecting chamber (201) are connected.

15. The dust collection method according to claim 14, characterized in that: The first suction power source (30) sucks gas in the second dust collecting chamber (201) of the dust collecting assembly (20) to form a negative pressure in the second dust collecting chamber (201), comprising: forming a pressure difference between the first dust collecting chamber (101) and the second dust collecting chamber of the dust collecting assembly (10), and the gas pressure in the first dust collecting chamber (101) is greater than the gas pressure in the second dust collecting chamber (201); The cover body (112) is opened under the triggering of the negative pressure, comprising: when the pressure difference between the first dust collecting chamber (101) and the second dust collecting chamber (201) reaches a first pressure difference, the cover body (112) is opened.

16. The dust collection method according to claim 14, characterized in that: The dust collection method further comprises: before the cover (112) is opened, the air inlet (1003) of the dust collection component (10) is closed; after the cover (112) is opened, the air inlet (1003) is opened, and the air inlet (1003) is communicated with the first dust collection chamber (101) and the second dust collection chamber (201).

17. A dust collection method, characterized in that: Applied to a cleaning device, the cleaning device is provided with a first dust collecting chamber and a second dust collecting chamber which are selectively connectable, the cleaning device comprises a dust cup, the dust cup forms the first dust collecting chamber, and the dust collecting method comprises: Sucking the gas in the second dust collecting chamber to form a negative pressure in the second dust collecting chamber; The cover of the dust cup is opened under the negative pressure, and the first dust collecting chamber is communicated with the second dust collecting chamber.

18. The dust collection method according to claim 17, characterized in that: The step of sucking gas from the second dust collecting chamber to form a negative pressure in the second dust collecting chamber comprises: forming a pressure difference between the first dust collecting chamber and the second dust collecting chamber, wherein the gas pressure in the first dust collecting chamber is greater than the gas pressure in the second dust collecting chamber; The cover of the dust cup is opened under the negative pressure, comprising: when the pressure difference between the first dust collecting chamber and the second dust collecting chamber reaches a first pressure difference, the cover is opened.

19. The dust collection method according to claim 17, characterized in that: The cleaning device is provided with an air inlet connected to the first dust collecting chamber, and the dust collecting method further includes: before the cover body is opened, the air inlet of the dust suction assembly is closed; after the cover body is opened, the air inlet is opened, and the air inlet is connected to the first dust collecting chamber and the second dust collecting chamber.

Images