Cleaning device

Abstract

The utility model relates to the technical field of cleaning, and particularly discloses a cleaning device. The cleaning device comprises a self-cleaning mechanism used for switching the cleaning device from a normal working state to a self-cleaning state when the cleaning device is operated by a user; a filter; a motor; a dust cup; the air duct shell is located between the filter and the motor, the air duct shell is provided with a self-cleaning opening and an air supplementing opening communicated with external air, and the self-cleaning opening and the air supplementing opening are located in the same cavity of the air duct shell; the air duct shell is further provided with an air outlet, and the air outlet and the self-cleaning opening are located in different cavities of the air duct shell respectively. The self-cleaning opening and the air supplementing opening are located in the same cavity, and the air outlet and the self-cleaning opening are located in the two different cavities respectively, so that the air supplementing air channel needed by self-cleaning cannot affect the air flow to be discharged out of the air channel shell, and the problems that after a self-cleaning mechanism is additionally arranged in an original structure, the air flow is unsmooth, and the resistance is large can be solved.

Description

[0001] The present application claims priority to the Chinese patent application No. 202510034261.3, filed on January 9, 2025, and entitled "Cleaning device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of cleaning, in particular to a cleaning device. BACKGROUND

[0003] In the field of cleaning devices, such as vacuum cleaners and the like, there are usually equipped with filters, motors and dust cups and the like. In the normal working state, the motor generates negative pressure to form an air flow, and the air flow flows forward through the filter, and the dust and the like are sucked into the dust cup for collection. However, with the increase of use time, the filter is easy to be blocked, which affects the cleaning effect and the performance of the device.

[0004] In order to solve this problem, cleaning devices with self-cleaning mechanisms have gradually appeared, and are commonly applied to barrel type vacuum cleaners. The user can switch the cleaning device from the normal working state to the self-cleaning state by operating the self-cleaning mechanism, so that the air flow at least partially reversely impacts the filter, thereby realizing the cleaning of the filter.

[0005] Although the self-cleaning mechanism performs well in the barrel type vacuum cleaner, when it is applied to the handheld vacuum cleaner, a serious adaptation problem occurs. Due to the portability requirement, the overall size of the handheld vacuum cleaner is small, and the structure is compact. After adding the self-cleaning mechanism in the original structure, the air flow from the dust cup or the filter to the motor is not smooth, and the resistance is large, which further leads to the increase of the load of the motor, affects the suction and the cleaning effect, and limits the application of the self-cleaning mechanism in the handheld vacuum cleaner.

[0006] Based on this, the present application provides a cleaning device to improve the prior art. CONTENT OF THE UTILITY MODEL

[0007] The utility model aims at providing a cleaning device to solve the problem of unsmooth air flow in the cleaning device with a self-cleaning mechanism.

[0008] To achieve the above-mentioned purpose, the utility model provides a cleaning device, which comprises:

[0009] A self-cleaning mechanism is used to switch the cleaning device from the normal working state to the self-cleaning state when operated by the user.

[0010] A filter, in the normal working state, the air flow flows forward through the filter, and in the self-cleaning state, the air flow at least partially reversely impacts the filter.

[0011] a motor for generating negative pressure to form the airflow;

[0012] a dust cup for collecting dirt, the filter being located in the dust cup;

[0013] The cleaning device further comprises:

[0014] a duct housing located between the filter and the motor, the duct housing being provided with a self-cleaning opening and a gas supplementing opening in communication with the external gas, the self-cleaning opening and the gas supplementing opening being located in the same chamber of the duct housing; in the self-cleaning state, the self-cleaning opening is in an open state to communicate the self-cleaning opening and the gas supplementing opening;

[0015] The duct housing is further provided with an air outlet, the air outlet being an outlet for the airflow to the external gas, the air outlet and the self-cleaning opening being located in different chambers of the duct housing, respectively.

[0016] Separating a chamber on the duct housing for the self-cleaning opening and the gas supplementing opening, and locating the air outlet and the self-cleaning opening in two different chambers inside the duct housing, respectively, makes the gas supplementing duct required for self-cleaning not affect the airflow discharging duct, i.e., the self-cleaning opening and the gas supplementing opening do not affect the original airflow discharging path, and the channel communicating the self-cleaning opening and the gas supplementing opening directly reaches the filter, which has less effect on the original dust filtering path, thus solving the problem of poor airflow and large resistance caused by adding the self-cleaning mechanism in the original structure.

[0017] As a further improvement of the utility model, the duct housing is provided with a partition wall to divide the space of the duct housing into multiple chambers, the multiple chambers at least comprising:

[0018] an eighth chamber in communication with the dust cup and the motor inlet end;

[0019] a ninth chamber provided with the self-cleaning opening and the gas supplementing opening, the ninth chamber being in communication with the eighth chamber through the self-cleaning opening formed on the partition wall.

[0020] The division of multiple chambers makes the different functional areas inside the duct housing more explicit, such as the eighth chamber mainly responsible for connecting the dust cup and the motor inlet end, and the ninth chamber focusing on the self-cleaning function, so that the airflow can efficiently flow according to the predetermined path in both normal working and self-cleaning states, reducing the turbulence and interference of the airflow, and improving the cleaning efficiency and self-cleaning effect.

[0021] As a further improvement of the utility model, the multiple chambers further comprise:

[0022] A tenth chamber in communication with the motor outlet end, the air outlet being disposed on the tenth chamber.

[0023] The air outlet is an outlet for air flow to be discharged to the outside, and is disposed on the tenth chamber, so that the air flow can be guided and rectified in the tenth chamber, and discharged to the outside environment in a suitable direction and speed.

[0024] As a further improvement of the utility model, the air duct shell has a first opening connected with the dust cup or the filter and a second opening connected with the motor, the first opening is located on one end face of the air duct shell, and the second opening is located on the side face of the air duct shell.

[0025] The first opening disposed on the end face of the air duct shell is in air flow communication with the dust cup or the filter, and the second opening on the side face is in air flow communication with the motor, so that the air flow path is more reasonable, the space of the air duct shell is further compressed, the overall structure is more compact, and the path of the dust cup and the motor is shortened, so that the air flow path is more direct.

[0026] As a further improvement of the utility model, the air duct shell comprises:

[0027] A shell body, the plurality of partition walls are disposed in the shell body, and the shell body has a columnar structure; the plurality of partition walls comprise:

[0028] A fourth partition wall, the fourth partition wall extends in the horizontal direction as a whole, the fourth partition wall is provided with a filter outlet through which air flow passes, and the filter outlet is in communication with the second opening;

[0029] A fifth partition wall, the fifth partition wall extends upward from the fourth partition wall and surrounds the filter outlet and the second opening, and the fourth partition wall and the fifth partition wall jointly define the eighth chamber;

[0030] A sixth partition wall, the sixth partition wall extends upward from the fourth partition wall and surrounds the self-cleaning opening and the air supplementing opening, and the sixth partition wall and the fourth partition wall jointly define the ninth chamber.

[0031] As a further improvement of the utility model, the fifth partition wall and the sixth partition wall are connected, and a shared wall body exists between the fifth partition wall and the sixth partition wall, and the shared wall body is located between the self-cleaning opening and the filter outlet.

[0032] The fifth partition wall and the sixth partition wall are connected in structure and have a part of wall shared between them, so that the fifth partition wall and the sixth partition wall are closely combined in space and jointly bear the functions of partitioning space and guiding airflow. Meanwhile, the self-cleaning opening and the filtering outlet are completely partitioned in two different chambers.

[0033] As a further improvement of the utility model, the air duct shell is in a columnar structure; the air outlet and the air supplementing outlet are both arranged on the lateral wall of the columnar structure.

[0034] The air outlet and the air supplementing outlet are both arranged on the lateral wall of the columnar structure of the air duct shell, so that the airflow can enter or exit the air duct shell at the lateral wall of the columnar structure. The lateral wall of the columnar structure has a relatively large area, and the distance from each point on the lateral wall to the central axis is equal, which is conducive to uniformly distributing the airflow in all directions of the lateral wall, avoiding the airflow being too concentrated in one or several points, and thus improving the smoothness of the airflow flow.

[0035] As a further improvement of the utility model, the self-cleaning mechanism comprises:

[0036] An operating member, at least a part of the operating member is exposed outside the air duct shell;

[0037] A sixth valve member is arranged in the ninth chamber and located at the position of the self-cleaning opening, and the sixth valve member can be driven by the operating member to open or close the self-cleaning opening.

[0038] By driving the sixth valve member to open or close the self-cleaning opening through the operating member, the timing and flow of the airflow in the self-cleaning process can be accurately controlled. During self-cleaning, it is ensured that sufficient airflow passes through the self-cleaning opening to impact the filter, effectively removing dust and dirt on the filter, restoring the performance of the filter, and prolonging the service life of the filter.

[0039] As a further improvement of the utility model, the cleaning device further comprises a flow guide member, the flow guide member is fixedly arranged in the eighth chamber, and the flow guide member is located below the self-cleaning opening to guide the airflow entering the eighth chamber from the self-cleaning opening to the filter.

[0040] As a further improvement of the utility model, the flow guide member comprises a plurality of jet columns extending to the filter, so that the gas in the ninth chamber is reversely impacted on the filter from the plurality of jet columns driven by the motor. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 The overall structure schematic diagram of the cleaning device provided by an embodiment of the application is shown in the figure.

[0042] Figure 2An explosion structure diagram of a cleaning device provided by an embodiment of the present application;

[0043] Figure 3 An explosion structure diagram of a cleaning device provided by an embodiment of the present application;

[0044] Figure 4 An explosion structure diagram of a cleaning device provided by an embodiment of the present application;

[0045] Figure 5 An explosion structure diagram of a cleaning device provided by an embodiment of the present application;

[0046] Figure 6 An explosion structure diagram of a cleaning device provided by an embodiment of the present application;

[0047] Figure 7 An explosion structure diagram of a cleaning device provided by an embodiment of the present application; Figure 6 A sectional view at C-C;

[0048] Figure 8 An explosion structure diagram of a cleaning device provided by an embodiment of the present application;

[0049] Figure 9 An explosion structure diagram of a cleaning device provided by an embodiment of the present application;

[0050] Figure 10 An explosion structure diagram of a cleaning device provided by an embodiment of the present application;

[0051] In the figure: 100, a cleaning device; 110, a self-cleaning mechanism; 120, a filter; 130, a motor; 140, a wind channel shell; 150, a dust cup; 160, an outer shell; 170, a flow guide; 190, a battery pack; 112, an operating piece; 113, a reset spring; 1117, a sixth valve; 141, a dust filtering wind channel; 142, a self-cleaning wind channel; 143, a first opening; 144, a second opening; 145, a self-cleaning opening; 146, a supplementary air inlet; 1416, an air outlet; 1418, a shell main body; 1419, a shell upper cover; 1424, an eighth chamber; 1425, a ninth chamber; 1426, a tenth chamber; 1434, a fourth partition wall; 1435, a fifth partition wall; 1436, a sixth partition wall; 1437, a shared wall; 161, an air outlet. DETAILED DESCRIPTION

[0052] The present application will be described in detail below with reference to the embodiments shown in the drawings. However, the embodiments do not limit the present application, and the changes made to the mechanisms, methods, or functions by those of ordinary skill in the art based on the embodiments are included in the protection scope of the present application.

[0053] As used herein, terms such as "upper", "lower", "left", "right", "front", "back", etc., which describe spatially relative positions, are for the purpose of illustrating one feature relative to another feature as shown in the drawings. It is to be understood that the spatially relative terms are intended to encompass different orientations of the product in addition to the orientation depicted in the figures. The terms "horizontal" and "vertical" are not to be construed as limiting the claims to only the orientations depicted in the figures. Additionally, descriptions of words "horizontal" and "vertical" are not to be construed as being exactly equivalent to along the direction perpendicular to the direction of gravity, allowing a certain angle of inclination.

[0054] In the field of cleaning devices, such as vacuum cleaners, etc., the device is usually equipped with components such as filters, motors, dust cups, etc. In the normal working state, the motor generates negative pressure to form an air flow, and the air flow passes through the filter in the forward direction, and the dust and other pollutants are sucked into the dust cup for collection. However, as the use time increases, the filter is easily clogged, affecting the cleaning effect and device performance.

[0055] In order to solve this problem, cleaning devices with self-cleaning mechanisms have gradually appeared, and are commonly applied to barrel-type vacuum cleaners. The user can switch the cleaning device from the normal working state to the self-cleaning state by operating the self-cleaning mechanism, so that the air flow at least partially impacts the filter in the reverse direction, thereby achieving cleaning of the filter.

[0056] Although the self-cleaning mechanism performs well in barrel-type vacuum cleaners, when it is applied to handheld vacuum cleaners, serious adaptation problems occur. Due to the portability requirement, the overall size of the handheld vacuum cleaner is small, and the structure is compact. After adding the self-cleaning mechanism to the original structure, the air flow from the dust cup or the filter to the motor is not smooth, and the resistance is large, which further leads to an increase in the load of the motor, affecting the suction and cleaning effect, so that the application of the self-cleaning mechanism in the handheld vacuum cleaner is limited.

[0057] The present application provides a cleaning device to improve the prior art.

[0058] Figures 1 to 7 A cleaning device 100 provided by the present application is shown, which comprises:

[0059] A self-cleaning mechanism 110 is used to switch the cleaning device 100 from a normal working state to a self-cleaning state when operated by a user;

[0060] A filter 120, in the normal working state, the air flow passes through the filter 120 in the forward direction, and in the self-cleaning state, the air flow at least partially impacts the filter 120 in the reverse direction;

[0061] A motor 130 is used to generate negative pressure to form the air flow;

[0062] A dust cup 150 for collecting dirt, the filter 120 is located inside the dust cup 150;

[0063] An air duct housing 140, the air duct housing 140 is located between the filter 120 and the motor 130, the air duct housing 140 is provided with a self-cleaning opening 145 and a gas supplement opening 146 in communication with the outside air, the self-cleaning opening 145 and the gas supplement opening 146 are located in the same chamber of the air duct housing 140; in the self-cleaning state, the self-cleaning opening 145 is in an open state to communicate the self-cleaning opening 145 and the gas supplement opening 146;

[0064] The air duct housing 140 is also provided with an air outlet 1416, which is an outlet for the airflow to the outside air, the air outlet 1416 and the self-cleaning opening 145 are located in different chambers of the air duct housing 140, respectively.

[0065] The self-cleaning mechanism 110 is a set of mechanical structures in the cleaning device 100, when the user operates the self-cleaning mechanism 110, the position of the components or valves in the self-cleaning mechanism 110 changes, thereby changing the airflow path in the air duct housing 140, so that the cleaning device 100 enters the self-cleaning state.

[0066] The filter 120 is a key component in the cleaning device 100 for filtering dust, in the normal working state, the airflow carrying dust from the dust suction port enters the inside of the dust cup 150 under the influence of the negative pressure generated by the motor 130, after filtering the dust by the filter 120, it reaches the motor 130, and finally the clean air is discharged. This airflow channel formed in the normal working state is called dust filtering air duct 141. In the self-cleaning state, the airflow is changed in direction so that it can impact the filter 120 in reverse to remove the dirt attached to it and restore the performance of the filter 120.

[0067] The air duct housing 140 is a component located between the filter 120 and the motor 130, and also serves as a connection between the filter 120 and the motor 130, and forms a specific airflow channel inside. Part of the self-cleaning mechanism 110 is arranged in the air duct housing 140 to control the flow direction and path of the airflow to achieve different airflows in the normal working and self-cleaning states.

[0068] It can be understood that the interior of the air duct shell 140 has a chamber, and the airflow channel is defined by the chamber. In the embodiment, there is one chamber in the air duct shell 140, which has the self-cleaning opening 145 and the air supplement opening 146. In the self-cleaning state, the self-cleaning opening 145 and the air supplement opening 146 can communicate with each other to form an air supplement duct. The external air communicated by the air supplement opening 146 enters the air duct shell 140 under the influence of the negative pressure generated by the motor 130, and impacts the filter 120 at the self-cleaning opening 145 through the air supplement duct in the reverse direction, thereby realizing the self-cleaning function of the filter 120.

[0069] The fact that the air outlet 1416 and the self-cleaning opening 145 are located in two different chambers in the interior of the air duct shell 140 means that the air supplement duct required for self-cleaning does not affect the process of discharging air from the air duct shell 140, that is, the arrangement of the self-cleaning opening 145 and the air supplement opening 146 does not affect the original air discharge path.

[0070] Since the self-cleaning opening 145 and the air supplement opening 146 are located in the same chamber of the air duct shell 140 and are different from the air outlet 1416, in the normal working state, the self-cleaning opening 145 is in the closed state, and the air supplement opening 146 does not participate in air flow organization, so it will not interfere with the original dust filtering air duct 141 in the normal working state, thereby ensuring the stability and efficiency of the normal cleaning function.

[0071] The fact that the self-cleaning opening 145 and the air supplement opening 146 are separated into one chamber of the air duct shell 140 for arrangement means that the structure is simple and the manufacturing cost is low. By reasonably arranging the positions and sizes of the self-cleaning opening 145 and the air supplement opening 146, the air flow can be communicated and impacted in the reverse direction in the self-cleaning state, without the need for complex valves or adjusting devices, thereby simplifying the implementation mode of the self-cleaning function.

[0072] In some embodiments, the cleaning device 100100 further comprises a battery pack 190190 or a power cord, and the selection of the battery pack 190190 or the power cord is determined according to the power type and power demand of the cleaning device 100, which will not be described here.

[0073] Further, the air duct shell 140 is provided with a partition wall to separate the space of the air duct shell 140 into a plurality of chambers, and the plurality of chambers at least includes:

[0074] The eighth chamber 1424 is in communication with the dust cup 150 and the inlet end of the motor 130;

[0075] The ninth chamber 1425 is provided with the self-cleaning opening 145 and the air supplementing opening 146, and is communicated with the eighth chamber 1424 through the self-cleaning opening 145 formed on the partition wall.

[0076] Referring to Figures 3 to 5 In the interior of the air duct shell 140, a plurality of partition walls for partitioning space are arranged, thereby dividing the originally single interior space into a plurality of independent chambers, including the eighth chamber 1424 and the ninth chamber 1425. The eighth chamber 1424 and the ninth chamber 1425 are structurally separated from each other but functionally associated with each other, and jointly constitute the air flow channel in the entire air duct shell 140.

[0077] The eighth chamber 1424 is connected with the dust cup 150 and the inlet end of the motor 130, and in the normal working state, the air flow carrying dust flows from the dust cup 150 through the eighth chamber 1424, and then flows to the inlet end of the motor 130, and is finally discharged by the motor 130.

[0078] The ninth chamber 1425 is another chamber in the air duct shell 140 separated from the eighth chamber 1424, and the ninth chamber 1425 is provided with the self-cleaning opening 145 and the air supplementing opening 146. In the self-cleaning state, the self-cleaning opening 145 and the air supplementing opening 146 are communicated, forming an air supplementing channel, so that external air can enter the ninth chamber 1425 from the air supplementing opening 146, and then enter the eighth chamber 1424 through the self-cleaning opening 145, thereby realizing reverse impact cleaning of the filter 120 and other components.

[0079] The division of the plurality of chambers makes the different functional areas in the interior of the air duct shell 140 more explicit, for example, the eighth chamber 1424 is mainly responsible for connecting the dust cup 150 and the inlet end of the motor 130, and the ninth chamber 1425 focuses on the self-cleaning function, so that the air flow can efficiently flow along the predetermined path in the normal working state and the self-cleaning state, reducing the turbulence and interference of the air flow, and improving the cleaning efficiency and the self-cleaning effect.

[0080] In the embodiment, the air duct shell 140 has a first opening 143 connected with the dust cup 150 or the filter 120, and a second opening 144 connected with the motor 130, the first opening 143 is located on one end face of the air duct shell 140, and the second opening 144 is located on the side face of the air duct shell 140.

[0081] The first opening 143 of the end surface of the air duct shell 140 is in airflow communication with the dust cup 150 or the filter 120, the second opening 144 of the side surface is in airflow communication with the motor 130, the airflow path is more reasonable, the space of the air duct shell 140 is further compressed, the overall structure is more compact, and the path between the dust cup 150 and the motor 130 is shortened, so that the airflow path is more direct.

[0082] Further, the plurality of chambers further comprises:

[0083] The tenth chamber 1426 is in communication with the outlet end of the motor 130, and the air outlet 1416 is arranged on the tenth chamber 1426.

[0084] Referring to Figure 3 and Figure 7 In the plurality of chambers of the air duct shell 140, in addition to the eighth chamber 1424 and the ninth chamber 1425 described above, the tenth chamber 1426 is further included. The tenth chamber 1426 is in communication with the outlet end of the motor 130, and the air outlet 1416 is arranged on the tenth chamber 1426. The air outlet 1416 is a channel for the airflow to be discharged to the outside. Accordingly, the tenth chamber 1426 plays a role of connecting the outlet end of the motor 130 and the outside air in the air duct shell 140, and is a necessary path for the airflow to flow to the outside air after being discharged from the outlet end of the motor 130.

[0085] The air outlet 1416 is arranged on the tenth chamber 1426 as an outlet for the airflow to be discharged to the outside, so that the airflow can be guided and rectified in the tenth chamber 1426, and the airflow can be discharged to the outside environment in a suitable direction and speed.

[0086] In the embodiment, the air duct shell 140 has a columnar structure; the air outlet 1416 and the air supplementing port 146 are both arranged on the side wall of the columnar structure.

[0087] The air outlet 1416 and the air supplementing port 146 are both located on the side wall of the columnar structure of the air duct shell 140, so that the airflow can enter or be discharged from the air duct shell 140 at the side wall of the columnar structure. The side wall of the columnar structure has a relatively large area, and the distance from each point on the circumference to the central axis is equal, which is conducive to uniformly distributing the airflow in all directions of the side wall, avoiding the airflow being too concentrated in one or several points, and thus improving the smoothness of the airflow flow.

[0088] In the embodiment, the air duct shell 140 comprises:

[0089] The shell body 1418 is in a columnar structure, and the plurality of partition walls are arranged in the shell body 1418.

[0090] a fourth partition wall 1434 extending in a horizontal direction as a whole, the fourth partition wall 1434 being provided with a filtering outlet through which air flows, the filtering outlet being in communication with the second opening 144;

[0091] a fifth partition wall 1435 extending upwardly from the fourth partition wall 1434 and surrounding the filtering outlet and the second opening 144, the fourth partition wall 1434 and the fifth partition wall 1435 together defining the eighth chamber 1424;

[0092] a sixth partition wall 1436 extending upwardly from the fourth partition wall 1434 and surrounding the self-cleaning opening 145 and the air supplementing opening 146, the sixth partition wall 1436 and the fourth partition wall 1434 together defining the ninth chamber 1425.

[0093] Referring to Figure 3 , the fourth partition wall 1434 is one of the multiple partition walls, extending in a horizontal direction as a whole, and dividing the space in the housing main body 1418 into two parts. The fifth partition wall 1435 is another partition wall, extending upwardly from the fourth partition wall 1434 and surrounding the filtering outlet and the second opening 144, so that the eighth chamber 1424 is formed under the limitation of the fifth partition wall 1435 and the fourth partition wall 1434, including the lower space of the housing main body 1418 and the space surrounded by the fifth partition wall 1435.

[0094] The space other than the eighth chamber 1424 is further divided by the sixth partition wall 1436 into the ninth chamber 1425 and the tenth chamber 1426, the sixth partition wall 1436 extending upwardly from the fourth partition wall 1434 and surrounding the self-cleaning opening 145 and the air supplementing opening 146, similar to the fifth partition wall 1435.

[0095] The above-mentioned surrounding of the opening means that the partition wall surrounds the opening in the chamber formed by the partition wall. In the specific implementation, the partition wall can partially surround the opening, so as to completely surround the opening in cooperation with other components such as the housing upper cover 1419, or the partition wall can completely surround the opening, and the surrounding arrangement is not limited herein. Figure 3

[0096] Further, the fifth partition wall 1435 and the sixth partition wall 1436 are connected, and a shared wall body 1437 is present between the fifth partition wall 1435 and the sixth partition wall 1436, the shared wall body 1437 being located between the self-cleaning opening 145 and the filtering outlet.

[0097] Continuing to refer to Figure 3 ​There is a shared wall body 1437 between the fifth partition wall 1435 and the sixth partition wall 1436, which means that the fifth partition wall 1435 and the sixth partition wall 1436 are connected in structure and there is a part of the shared wall body between them, so that the fifth partition wall 1435 and the sixth partition wall 1436 are closely combined in space and jointly bear the functions of partitioning space and guiding airflow. At the same time, the self-cleaning opening 145 and the filtering outlet are completely separated in two different chambers.

[0098] In the embodiment, the self-cleaning mechanism 110 includes:

[0099] The operating member 112 is at least partially exposed outside the air duct shell 140;

[0100] The sixth valve member 1117 is arranged in the ninth chamber 1425 and located at the position of the self-cleaning opening 145. The sixth valve member 1117 can be driven by the operating member 112 to open or close the self-cleaning opening 145.

[0101] A part of the operating member 112 is outside the air duct shell 140, which is convenient for the user to directly operate. The user can trigger or control the work of the self-cleaning mechanism 110 through this exposed operating member 112. The operating member 112 can be in the form of a button, a lever, a knob, etc., a part of which penetrates the wall of the air duct shell 140 and is fixedly displayed outside. As an example, the operating member 112 can adopt a button, one end of which is fixed outside the air duct shell 140 and the other end is connected with the internal transmission mechanism. When the user presses the button, the internal transmission mechanism will transmit the action to the sixth valve member 1117, thereby realizing the control of the self-cleaning opening 145.

[0102] The sixth valve member 1117 is installed inside the ninth chamber 1425 and located at the position of the self-cleaning opening 145, which can open or close the self-cleaning opening 145 and thereby control the passage of airflow. The sixth valve member 1117 is essentially a valve, which can be a rotary valve, a lifting valve or other forms of valve. As an example, see Figure 4 and Figure 5 The sixth valve member 1117 is a rotary valve, which has a rotating shaft, and the sixth valve member 1117 is connected with the operating member 112. When the operating member 112 is operated, the sixth valve member 1117 rotates to open or close the self-cleaning opening 145.

[0103] By driving the sixth valve member 1117 to open or close the self-cleaning opening 145 through the operation member 112, the timing and flow rate of the air flow during the self-cleaning process can be accurately controlled. During self-cleaning, sufficient air flow is ensured to pass through the self-cleaning opening 145 to impact the filter 120, effectively removing dust and dirt on the filter 120, restoring the performance of the filter 120, and prolonging the service life of the filter 120.

[0104] In the present embodiment, the cleaning device 100 further comprises a flow guide member 170 fixedly arranged in the eighth chamber 1424, and the flow guide member 170 is located below the self-cleaning opening 145 to guide the air flow entering the eighth chamber 1424 from the self-cleaning opening 145 to the filter 120.

[0105] Referring to Figures 8 to 10 The flow guide member 170 is installed inside the eighth chamber 1424 of the cleaning device 100 and is fixedly connected with the air duct housing 140, for example, the flow guide member 170 can be fixed on the wall of the eighth chamber 1424 by screws, bolts or other connectors, or the flow guide member 170 can be firmly clamped in the predetermined position by buckles, clamps or other structures, which are not limited here.

[0106] The specific position of the flow guide member 170 in the eighth chamber 1424 is below the self-cleaning opening 145, so that the air flow entering the eighth chamber 1424 from the self-cleaning opening 145 directly impacts the flow guide member 170, thereby being effectively guided and adjusted in direction.

[0107] The flow guide member 170 can effectively guide the air flow entering the eighth chamber 1424 from the self-cleaning opening 145 to the filter 120, ensuring that the air flow can cover as much of the surface of the filter 120 as possible in the self-cleaning state, thereby improving the cleaning efficiency. Through the guidance of the flow guide member 170, the air flow can more uniformly impact the surface of the filter 120, effectively removing dust and impurities attached to the filter 120 and restoring the performance of the filter 120.

[0108] Further, the flow guide member 170 comprises a plurality of spray columns extending towards the filter 120, so that the gas in the ninth chamber 1425 is driven by the motor 130 to impact the filter 120 in reverse from the plurality of spray columns.

[0109] It can be understood that in the self-cleaning state, the gas in the ninth chamber 1425 is driven by the motor 130 to impact the filter 120 in reverse through the spray columns. The plurality of spray columns increases the coverage of the air flow, so that all areas of the filter 120 can be impacted by the air flow, effectively removing dust and impurities attached to the filter 120 and ensuring that the filter 120 is thoroughly cleaned.

[0110] In this embodiment, the cleaning device 100 further comprises an outer housing 160, the air duct housing 140 is at least partially arranged in the outer housing 160, the outer housing 160 has an exhaust port 161, the air outlet 1416 communicates with the exhaust port 161; the self-cleaning mechanism 110 is at least partially exposed to the outer housing 160 for user operation.

[0111] Referring to Figure 1 The air duct housing 140 is a key component in the cleaning device 100 for guiding and controlling air flow, and arranging it at least partially in the outer housing 160 can achieve protection and integration of the air duct housing 140, making the structure of the entire cleaning device 100 more compact and beautiful. The outer housing 160 provides additional protection for the air duct housing 140, preventing damage to the air duct housing 140 and its internal components from the external environment. The air outlet 1416 communicates with the exhaust port 161 of the outer housing 160, ensuring the smoothness of the air flow when it is discharged from the cleaning device 100, and also optimizing the final path of the air flow in the normal working state. The self-cleaning mechanism 110 is partially exposed to the outer housing 160, so that the user can easily access the operating member 112 to trigger the self-cleaning function.

[0112] It should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

[0113] The above embodiments are only used to illustrate the technical solutions of the present application and not to limit it, although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A cleaning device, comprising: a self-cleaning mechanism for switching the cleaning device from a normal working state to a self-cleaning state when operated by a user; a filter, through which air flows in a forward direction in the normal working state, and at least partially impacts in a reverse direction in the self-cleaning state; a motor for generating negative pressure to form the air flow; a dust cup for collecting dirt, the filter being located in the dust cup; characterized in that the cleaning device further comprises: an air duct housing located between the filter and the motor, the air duct housing being provided with a self-cleaning opening and a gas supplementing opening in communication with the outside air, the self-cleaning opening and the gas supplementing opening being located in the same chamber of the air duct housing; in the self-cleaning state, the self-cleaning opening is in an open state to communicate the self-cleaning opening and the gas supplementing opening; the air duct housing is further provided with an air outlet, which is an outlet for the air flow to the outside air, the air outlet and the self-cleaning opening being located in different chambers of the air duct housing, respectively.

2. The cleaning device of claim 1, wherein, the air duct housing is provided with a partition wall to divide the space of the air duct housing into multiple chambers, the multiple chambers at least comprising: an eighth chamber in communication with the dust cup and the motor inlet end; a ninth chamber provided with the self-cleaning opening and the gas supplementing opening, the ninth chamber being in communication with the eighth chamber through the self-cleaning opening formed on the partition wall.

3. The cleaning device of claim 2, wherein, the multiple chambers further comprising: a tenth chamber in communication with the motor outlet end, the air outlet being provided in the tenth chamber.

4. The cleaning device of claim 3, wherein, the air duct housing has a first opening connected with the dust cup or the filter, and a second opening connected with the motor, the first opening being located on one end face of the air duct housing, and the second opening being located on a side face of the air duct housing.

5. The cleaning device of claim 4, wherein, the air duct housing comprising: a housing body, the multiple partition walls being arranged in the housing body, the housing body being in a columnar structure; the multiple partition walls comprising: a fourth partition wall extending in a horizontal direction as a whole, the fourth partition wall being provided with a filter outlet for the air flow to pass through, the filter outlet being in communication with the second opening; a fifth partition wall extending upward from the fourth partition wall and surrounding the filter outlet and the second opening, the fourth partition wall and the fifth partition wall together defining the eighth chamber; a sixth partition wall extending upward from the fourth partition wall and surrounding the self-cleaning opening and the gas supplementing opening, the sixth partition wall and the fourth partition wall together defining the ninth chamber.

6. The cleaning device of claim 5, wherein, the fifth partition wall and the sixth partition wall are connected, and there is a shared wall body between them, the shared wall body being located between the self-cleaning opening and the filter outlet.

7. The cleaning device of claim 3, wherein, the air duct housing is in a columnar structure; the air outlet and the gas supplementing opening are both arranged on a side wall of the columnar structure.

8. The cleaning device of claim 2, wherein, the self-cleaning mechanism comprising: an operating member, at least a part of the operating member being exposed outside the air duct housing. A sixth valve is arranged in the ninth chamber and located at the position of the self-cleaning opening, and the sixth valve can be driven by the operating member to open or close the self-cleaning opening.

9. The cleaning device of claim 2, wherein, The cleaning device further comprises a flow guide arranged in the eighth chamber and located below the self-cleaning opening to guide the airflow entering the eighth chamber from the self-cleaning opening to the filter.

10. The cleaning device of claim 9, wherein, The flow guide comprises a plurality of jet columns extending to the filter, so that the gas in the ninth chamber is driven by the motor to impact the filter reversely from the plurality of jet columns.

Images