Air duct assembly and cleaning equipment

Abstract

The air duct assembly comprises a machine body assembly, the installation direction of the machine body assembly can be switched so that the machine body assembly can be in a first working state or a second working state, a first space communicating with the two ends of the machine body assembly is formed in the machine body assembly, and a first air outlet is formed in the side portion of the machine body assembly; a first channel for airflow to flow is formed at one end of the machine body assembly, a closed structure is arranged at the other end of the machine body assembly, and a second air outlet assembly is arranged on the closed structure or the side portion adjacent to the closed structure. Rapid switching between a dust collection cleaning mode and an air blowing cleaning mode is achieved through switching of the positions of the assemblies, efficient dust collection and blowing cleaning effects are achieved through the same cleaning device, and multiple purposes are achieved through one machine.

Description

Technical Field

[0001] This disclosure belongs to the field of cleaning equipment technology, specifically relating to an air duct component and cleaning equipment, and in particular, a device that can switch between vacuum cleaning and blowing cleaning modes by adjusting the installation state of the body components. Background Technology

[0002] Currently, vacuum cleaners only have one function: picking up trash. In today's increasingly diverse product market, single-function products are increasingly unable to meet people's daily needs. Based on the suction function, existing handheld vacuum cleaners require maximum suction power, so their internal motor blades are unique compared to ordinary blades. Even when the motor reverses to drive the blades, it cannot generate a reverse blowing force. This results in the limited functionality of handheld vacuum cleaners, only capable of cleaning a specific target area. With prolonged use, dust and impurities easily accumulate on the walls of the vacuum cleaner's internal tubing, reducing suction power and affecting cleaning effectiveness. Furthermore, modern household appliances such as air conditioners and air purifiers have air filters that require regular cleaning and maintenance. Cleaning these filters is difficult without suitable tools, and manual cleaning cannot achieve effective and thorough cleaning. Operating the vacuum cleaner too close to the user can also lead to the inhalation of large amounts of solid particles, causing health risks.

[0003] Therefore, in order to address the aforementioned technical problems, it is necessary to provide an air duct component and a cleaning device. Summary of the Invention

[0004] The purpose of this disclosure is to provide an air duct component and cleaning device that can achieve vacuum cleaning and blow-dry cleaning through mode switching to meet the needs of cleaning and blowing.

[0005] To achieve the above objectives, the technical solution disclosed herein is as follows:

[0006] The air duct assembly includes: a body assembly, the body assembly being able to switch its installation direction to be in a first working state or a second working state, a first space connecting its two ends being formed inside the body assembly, a first air outlet being formed on the side of the body assembly; a first channel for airflow being formed at one end of the body assembly, and a closed structure being provided at the other end, and a second air outlet assembly being provided on the closed structure or on the side adjacent to it.

[0007] In the vacuum cleaning state, the body components are in the first working state, and the first air outlet is in the through state: the first space is connected to the air outlet of the dust cup component through the first channel, and forms the first air duct with the vacuuming air duct and the first air outlet;

[0008] In the blowing cleaning state, the body components are in the second working state. The closed structure limits the air outlet of the dust cup component to restrict airflow. The first space, the second air outlet component and the suction air duct are connected to form the second air duct.

[0009] In one or more embodiments of this disclosure, the air duct assembly includes: a body assembly defined on a motor, the body assembly being switchable in installation direction to be in a first working state or a second working state, a first space forming within the body assembly connecting its two ends, and a first air outlet formed on the side of the body assembly being switchable (when the first air outlet is in an open state, it is in a through state; otherwise, it is in a blocked state, the same below); a first channel for airflow is formed at one end of the body assembly, and a closed structure is provided at the other end to obstruct airflow, and a second air outlet assembly is provided on the closed structure or on the side adjacent to it;

[0010] In vacuum cleaning mode, the first air outlet is open: the first channel is connected to the air outlet of the dust cup assembly, and together with the vacuum duct and the first air outlet, they form the first air duct; at this time, the airflow direction in the first air duct is: drawn in by the vacuum duct, then through the dust cup assembly, then through the first channel into the first space, and then out through the first air outlet; of course, the second air outlet assembly can also be closed.

[0011] In the blowing cleaning mode, the second air outlet assembly is continuous: the closed structure is adjacent to the air outlet of the dust cup assembly to restrict airflow. The second air outlet assembly is connected to the suction duct and forms a second duct with the first space. At this time, the airflow direction in the second duct is: drawn into the first space from the first air outlet and / or the external channel, and then flows out through the suction duct via the second air outlet assembly. This solution relies on the body assembly as the core to realize duct adjustment in different operating modes. On the one hand, it can enable the handheld vacuum cleaner to meet the strong negative pressure suction function of vacuuming operation when the first duct is connected, which can meet the cleaning operation of conventional floating dust, fibers, paper, hair, etc. After adjusting the installation direction of the body assembly, the handheld vacuum cleaner can blow through the suction duct when the second duct is connected, thereby realizing the self-cleaning of the pipe, the blowing of the target area, or the blowing of the filter screen, filter, etc.

[0012] The term "open state" refers to the situation where, taking the first air outlet as an example, a large volume of airflow entering the first space flows out of the first space through the first air outlet. Conversely, the term "obstructed state" refers to the situation where the airflow entering the first space cannot flow out of the first space through the first air outlet, or the airflow flowing out of the first space through the first air outlet is much lower than the flow rate in the open state.

[0013] Preferably, the projections of the first air outlet and the second air outlet assembly onto the cross section perpendicular to the axial direction of the body assembly do not overlap.

[0014] In one or more embodiments of this disclosure, the second air outlet assembly includes an air outlet for connecting to the dust extraction duct, an inner air outlet for communicating with the first space, and a transition channel formed between the air outlet and the inner air outlet. Preferably, the air outlet and / or the inner air outlet and / or the transition channel are provided with a controllable switchable second air control structure. In this case, the second air outlet assembly extends the distance between the air outlet and the inner air outlet through the transition channel of a certain length, thereby facilitating the targeted design and optimization of the second air duct, and optimizing the smooth flow of air from the first space into the dust extraction duct during the blowing cleaning state.

[0015] In one or more embodiments of this disclosure, the internal air outlet of the second air outlet assembly is disposed on a closed structure. This design facilitates the achievement of the most efficient purging airflow during the blowing cleaning process, thereby providing a powerful purging solution.

[0016] In one or more embodiments of this disclosure, the transition channel is formed with a protrusion, the protrusion including a shell portion exposed to the outside of the body assembly, and the two ends of the inner cavity of the shell portion are respectively connected to an air outlet and an internal air outlet. The protrusion in this design serves two purposes: firstly, it provides positioning; secondly, it can also form a physical snap-fit, thereby improving the assembly firmness of the body assembly.

[0017] In one or more embodiments of this disclosure, the outer dimensions of the protrusion match the dimensions of the first limiting cavity of the first limiting structure. The first limiting structure is disposed on the handle assembly. In the second working state, the first limiting cavity of the first limiting structure communicates with the suction duct. The first limiting structure is confined to the end of the suction duct and its adjacent portion to satisfy the restriction on the body components during the blowing cleaning state.

[0018] In one or more embodiments of this disclosure, a second limiting structure is further provided on the handshake assembly. The second limiting structure has a second limiting cavity, and in a first working state, the protrusion is fitted into the second limiting cavity of the second limiting structure. Further, the external dimensions of the protrusion match the dimensions of the second limiting cavity of the second limiting structure. The second limiting structure can be located at the end of the handle or in a nearby position to restrict the body components during vacuuming.

[0019] In one or more embodiments of this disclosure, the handshake assembly is further provided with a third limiting structure having a limiting position, the limiting position having a first adjacent surface and the protrusion having a second adjacent surface, and in a first working state, the first adjacent surface and the second adjacent surface cooperate.

[0020] Furthermore, the protrusion also has a second surface that adapts to the outer surface of the adjacent grip. The second limiting structure is positioned adjacent to the end of the grip to restrict the body components during vacuuming. In this design, the second surface adapting to the outer surface of the adjacent grip means that adjacent planes of different structural combinations can form a mating mechanism through smooth transitions, i.e., the second surface is exposed on the grip surface, allowing it to contact the user. In other words, at this point, part of the enclosed structure of the motor assembly can be exposed outside the entire body. This design thus creates a method for semi-openly positioning the motor assembly within the grip assembly.

[0021] In one or more embodiments of this disclosure, a first air outlet is provided with a first air control structure that can be opened along the airflow direction of a first air duct. Preferably, the first air control structure may also include a hinge structure for connecting to the inner wall of the first air outlet and a movable piece movably disposed on the hinge structure and rotatable about the axis of the hinge structure. The area of ​​the movable piece is interference-fitted with the cross-section of a position on the inner wall of the first air outlet to meet the requirements of the controlled switch.

[0022] In one or more embodiments of this disclosure, the edges of a plurality of first air outlets distributed on the body assembly have air outlet structures for defining the air outlet direction.

[0023] In one or more embodiments of this disclosure, a guiding surface is provided along the edge of the air outlet structure. The extension direction of the guiding surface coincides with or intersects with the tangential direction along the inner wall of the body component, and the included angle α ≤ 90° when intersecting. In this solution, the design of the air outlet structure and the guiding surface of the first air outlet (including the included angle α ≤ 90°) is optimized, which can guide the exhaust direction and avoid the exhaust air blowing directly on the user in the dust suction mode. At the same time, the airflow velocity is optimized (the uniformity of the exhaust velocity is improved by 15%), and the exhaust noise is reduced (the noise value can be controlled below 65dB).

[0024] In one or more embodiments of this disclosure, a cleaning device includes a dust cup assembly, a handle assembly, a motor assembly, and an air duct assembly defined among the three. A motor and a fan are disposed in a first space of the body assembly. Either end of the dust cup assembly and the body assembly is adjacent to the handle assembly, and the body assembly is detachable. In a vacuum cleaning state, the body assembly is in a first operating state, and the airflow generated by the fan sequentially enters the dust cup assembly, the first channel, the first space, and the first air outlet through the vacuum duct. In a blower cleaning state, the body assembly is in a second operating state, and the airflow generated by the fan sequentially enters the second air outlet assembly and the vacuum duct through the first space. In this solution, the motor assembly's mounting position on the handle assembly can be semi-open, with one end of the mounting position close to the dust cup assembly. Therefore, semi-open means that no additional limitation is provided at the other end of the mounting position away from the dust cup assembly.

[0025] In one or more embodiments of this disclosure, the handshake assembly further includes an end plate disposed above the grip, the space between the end plate and the dust cup assembly defining a mounting space for the motor assembly. In this design, a space for mounting the motor assembly is formed between the end plate and the dust cup assembly.

[0026] In one or more embodiments of this disclosure, at least one control component is provided on the end plate. The control component includes at least one of the following: a display interface, a power switch, and an adjustment button. The control component is electrically connected to at least a motor and / or a sensor, and the sensor is disposed on the dust cup assembly and / or the handshake assembly and / or the motor assembly.

[0027] In one or more embodiments of this disclosure, an outer channel is also formed between the end plate or the end plate and the motor assembly. In the blowing cleaning state, the outer channel is connected to the first space. At this time, the airflow direction in the second air duct is: drawn into the first space through the outer channel, and then passed through the second air outlet assembly into the dust suction air duct and out.

[0028] Compared to existing technologies, the air duct component and cleaning device disclosed herein, by optimizing the body components as the core and switching different working assembly states of the motor components to achieve switching for different needs such as vacuuming / blowing, and by optimizing the air duct structure design for different airflow requirements, expands the functionality of traditional vacuum cleaners by adding a blowing function. This allows for better coverage of cleaning scenarios in the user's home. For example, corners that cannot be reached by vacuuming can be cleaned by blowing away dust. It can also be used to clean fallen leaves in the yard, and to clean other functional components such as the filter. Users can complete multiple cleaning tasks with one machine, covering more scenarios than vacuum cleaners that only have a vacuuming function.

[0029] Furthermore, by adjusting the installation direction of the body components, it is possible to quickly switch between vacuuming and blowing modes without the need for an additional independent blower motor. This reduces the overall size and weight of the cleaning equipment (the weight of the whole machine can be reduced by 20%-25% compared to the dual-motor solution), and also reduces the number of parts, improving the portability and reliability of the equipment. At the same time, based on the unidirectional strong airflow characteristics of the body components, it is adapted to dual air ducts, avoiding the industry pain point of no effective blowing force when the motor reverses, and realizing the efficient reuse of dual functions of a single motor. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of a body component in one embodiment of the present disclosure;

[0032] Figure 2 for Figure 1 Side view of the main body components;

[0033] Figure 3 for Figure 2 Sectional view of the body components along line AA;

[0034] Figure 4 This is a schematic diagram of the location of the first air outlet of the body component in one embodiment of the present disclosure. In the figure, from the observer's perspective, position ac on one side shows the possibility of setting it in different positions, which does not constitute a limitation on the position.

[0035] Figure 5 This is a side view of a cleaning device according to an embodiment of the present disclosure;

[0036] Figure 6 For this disclosure Figure 5 A cross-sectional view of the cleaning equipment in vacuum cleaning mode (BB direction).

[0037] Figure 7 This is a BB diagram of the cleaning device in the vacuum cleaning state according to an embodiment of this disclosure;

[0038] Figure 8 For this disclosure Figure 7 A schematic diagram of airflow operation of a cleaning device in vacuum cleaning mode;

[0039] Figure 9 This is a BB diagram of the cleaning device in the blower cleaning state according to an embodiment of this disclosure;

[0040] Figure 10 For this disclosure Figure 9 A schematic diagram of airflow operation of a cleaning device in blower cleaning mode;

[0041] Figure 11 For this disclosure Figure 5 Front view of the cleaning equipment;

[0042] Figure 12 This is a front view of a cleaning device according to an embodiment of the present disclosure.

[0043] Explanation of key figure labels:

[0044] 01. Motor assembly; 02. Dust cup assembly; 03. Handshake assembly; 1. Body assembly; 11. Housing; 12. Enclosed structure; 13. First channel; 14. First air outlet; 15. Second air outlet assembly; 151. Inner air outlet; 152. Transition channel; 153. Air outlet; 21. Dust cup; 22. Dust cup cover; 16. Fan; 31. Suction duct; 32. Handle; 33. End plate; 34. Battery compartment; 35. Outer channel; 36. Second limiting structure. Detailed Implementation

[0045] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in this disclosure will be clearly and completely described below in conjunction with the embodiments of this disclosure. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.

[0046] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0047] It should be noted that when an element is described as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. In the embodiments shown in this disclosure, directional representations such as up, down, left, right, front, and back are relative and are used to explain the relative structure and movement of different components in this disclosure. These representations are appropriate when the components are in the positions shown in the figures. However, if the description of the component positions changes, then these representations are considered to change accordingly.

[0048] Because handheld vacuum cleaners need to provide maximum suction power, their fan blade design is specifically optimized. The optimized fan 16 typically only enhances the strong airflow in one direction; that is, the strong airflow from the main body component 1 can only be directed in one direction by the fan 16. It is precisely because of this design that existing vacuum cleaners achieve their dust extraction function. However, due to this fan blade design, the direction of the strong airflow cannot be directly adjusted by reversing the motor.

[0049] With the widespread use of smart home appliances such as air purifiers and central air conditioning, the filters or screens of these appliances require regular cleaning. Manual cleaning not only requires tools like brushes but also risks splashing adsorbed pollutants, potentially affecting the health of the cleaner. Furthermore, since this type of cleaning only cleans the surface and cannot reach deeper layers, pollutants may accumulate, impacting the long-term performance and lifespan of the equipment. Additionally, considering the limitations of regular vacuum cleaners in everyday cleaning, conventional vacuuming modes are insufficient for effectively cleaning areas such as sofa legs against walls, corners between furniture and walls, open balconies, and fallen leaves and debris along roadsides.

[0050] Based on the above understanding, this disclosure provides a new technical solution. Using the motor body component 1 as the core of the improvement—which is the source of the working airflow generated by the handheld vacuum cleaner during operation—and taking advantage of the unidirectional strong airflow characteristic of this core, the airflow mode is switched to adapt to different operational needs by changing its installation mode on the handle component 03. Furthermore, this switching enables the switching between two airflow modes:

[0051] The first air duct is designed to meet the requirements of vacuuming and cleaning. Its airflow direction is as follows: it is drawn in by the vacuuming air duct 31, then passes through the dust cup assembly 02, enters the first space through the first channel, and flows out at least through the first air outlet 14.

[0052] The second air duct is designed to meet the requirements of air blowing and cleaning. Its airflow direction is as follows: it is drawn into the first space through the first air outlet 14 and / or the external channel 35, and then flows out through the second air outlet assembly 15 into the dust suction duct 31.

[0053] Based on the above ideas, the dual-mode vacuuming / blowing cleaning solution disclosed herein is proposed.

[0054] Please refer to Figure 1 As shown, in one embodiment of this disclosure, the air duct assembly includes: a body assembly, the body assembly being switchable in installation direction to be in a first working state or a second working state, a first space connecting its two ends being formed inside the body assembly, a first air outlet being formed on the side of the body assembly; a first channel for airflow being formed at one end of the body assembly, and a closed structure being provided at the other end, and a second air outlet assembly being provided on the closed structure or on the side adjacent to it.

[0055] In one disclosure of this solution, when the body component switches to the first working state, the first channel is connected to the dust cup component. At this time, the suction duct, dust cup component, first channel, first space, and first air outlet are in a connected state, forming the first air duct.

[0056] Specifically, in the vacuuming state, the first channel 13 is defined as an open state formed at one end of the body assembly 1 for airflow, and it is connected to the dust cup assembly; the first air outlet 14 is formed on the side of the body assembly 1 and is in a through state. At this time, airflow is drawn in through the vacuuming duct, and the airflow mixed with debris and dust enters the dust cup assembly and is filtered. The filtered airflow flows into the first channel and enters the first space. Thereafter, the airflow may be obstructed or restricted by the motor, the closed structure, etc., and it preferentially enters the first air outlet to exhaust air, thus realizing the vacuuming function. In the first working state, the first air outlet 14 is set at position a radially distal position relative to the body assembly 1 or at a position deviating from that position to a certain extent (the central angle of the deviation is less than 15°). When set at this advantageous position, the first air outlet 14 in the first working state can have a better exhaust effect. Figure 4 As shown, the radial distal position here refers to, from the observer's perspective, the other end of the body component 1 where the diameter passes through position a.

[0057] In another disclosure of this solution, when the installation direction of the body components is adjusted to switch them to the second working state, the enclosed structure restricts the dust cup assembly. At this time, the first air outlet / external channel, the first space, the second air outlet assembly, and the dust suction duct are in a connected state, forming the second air duct.

[0058] Specifically, in the blowing cleaning state, the second air outlet assembly 15 is disposed on the closed structure 12 at the other end of the body assembly 1 and serves as a structure for providing blowing airflow to the suction duct 31. The air outlet interface of the second air outlet assembly 15 is connected to the suction duct 31. At this time, due to the restriction of the dust cup assembly 02 by the closed structure 12, the airflow output by the second air outlet assembly 15 can only flow to the suction duct 31 to complete the blowing. At this time, the closed structure can block the connection between the original airflow path of the dust cup assembly and the body assembly in the blowing mode, forcing the airflow to flow from the second air outlet assembly to the suction duct, realizing the directional output of the blowing function; the "inner air outlet interface-transition channel-air outlet interface" structure of the second air outlet assembly can realize the efficient turning and transmission of airflow, and the airflow transmission efficiency can reach more than 85%, which is far higher than the 60% transmission efficiency of traditional simple adapter ducts.

[0059] In one embodiment of this disclosure, the body assembly 1 is a hollow, approximately barrel-shaped shell 11 with an opening at one end. The hollow space of this structure serves as a first space for housing a motor on which a fan 16 is mounted. In one aspect, a plurality of first air outlets 14 are formed on the side of the shell 11, which can be used to construct the exhaust outlet at the end of a first air duct that satisfies vacuuming and cleaning requirements. In another aspect, a second air outlet assembly 15 can be disposed on the shell 11 at a position offset from the axial projection of the first air outlets 14.

[0060] Since vacuum cleaning is a conventional approach in this field, it will not be discussed in detail here. However, in order to meet the design concept of blower cleaning, the projections of the first air outlet 14 and the second air outlet assembly 15 on the cross section perpendicular to the axial direction of the body assembly 1 do not overlap.

[0061] The purpose of offsetting the second air outlet assembly 15 from the first air outlet 14 is that, when switching to the blowing cleaning mode, the second air outlet assembly 15, as part of the second air duct, has a more advantageous airflow efficiency. It is precisely through this offset that the second air outlet assembly 15 maintains its superior airflow efficiency even when the first air outlet 14 is in a through-hole or open state. Figure 4 The image shows a comparison of the positions of the first air outlet 14 and the second air outlet assembly 15. When the two are not overlapping, the airflow can be blown out through the second air outlet assembly 15 during the cleaning process through the coordination of airflow dynamic design and assembly design of the body components.

[0062] In one scenario of the blower cleaning mode, such as Figure 10 As shown in the middle air path 2, the first air outlet 14 can serve as the inlet of the second air duct, and the air outlet interface 153 of the second air outlet assembly 15 can be connected to the dust suction duct 31. As mentioned earlier, since the first air outlet 14 is required as the inlet of the second air duct, the inner air outlet interfaces of the first air outlet 14 and the second air outlet assembly need to be set at different positions on the body assembly 1. Based on the gas dynamics design, a smooth blowing airflow is formed in the second air duct.

[0063] It should be noted that, in order to meet the requirement that the first air outlet 14 and the second air outlet assembly cooperate to form the second air duct, the position of the second air outlet assembly needs to be offset from the axial projection position of the first air outlet 14, see [reference]. Figure 4 The view shown in the diagram illustrates the possible locations and ranges of the second air outlet assembly 15, with position a being a preferred location.

[0064] In another scenario of the blower cleaning mode, such as Figure 10 As shown in the middle air path 1, the first air outlet 14 can be closed, while the outer channel 35 serves as the inlet of the second air duct. The air outlet interface 153 of the second air outlet assembly 15 can be connected to the dust suction duct 31.

[0065] As one embodiment of this disclosure, to achieve the aforementioned function switching, an air duct assembly is also provided, which specifically includes: a body assembly 1 with a switchable installation direction to achieve a first working state or a second working state, and a first space formed within the body assembly 1. A motor and a fan can be disposed within the first space, with the fan adjacent to the first channel, the motor being closer to the enclosed structure than the fan, and the fan blowing air in a direction away from the first channel. In the first working state, the body assembly 1 is disposed adjacent to the dust cup assembly, and the filtered airflow enters the first space from the dust cup. In the second working state, the body assembly 1 is disposed adjacent to the dust cup assembly, and the second air outlet assembly is directly connected to the suction air duct.

[0066] As disclosed, the side of the body assembly 1 has a plurality of first air outlets 14; one end of the body assembly 1 has a first channel 13 for airflow, and the other end is provided with a closed structure 12 to obstruct airflow, and a second air outlet assembly 15 is provided on the closed structure 12 or on the side adjacent to it.

[0067] Furthermore, such as Figure 3 As shown, the second air outlet assembly includes an air outlet 153, an inner air outlet 151 communicating with the first space, and a transition channel 152 formed between the air outlet 153 and the inner air outlet 151. The transition channel 152 may be a protrusion exposed and extending beyond the body assembly. This protrusion may be a shell portion exposed to the outside of the body assembly, with its inner cavity connected to the air outlet 153 and the inner air outlet 151 at its two ends.

[0068] Furthermore, the internal air outlet 151 is disposed on the body assembly 1 to communicate with the first space, and the axial projection direction of the internal air outlet 151 in the first space is offset from the first air outlet 14. Figure 4 As shown, the internal air outlet 151 is located Figure 4 When position 'a' is reached, it can be achieved. Figure 6 The suction duct 31 is connected from the observer's perspective. When the internal air outlet 151 is in... Figure 4 Other positions between the middle and ac positions, such as Figure 4 When the middle position is b or c, in order to achieve the same Figure 6 The connection between the suction duct 31 and the observer's perspective only requires adaptive optimization of the shape and position of the transition channel 152.

[0069] Of course, the following possibility also exists: if the internal air outlet 151 is located closer to position c, the intensity of the airflow blown out through the second air outlet assembly 15 will be weakened when the body assembly is in the second working state. This may be because the internal air outlet 151 is closer to position c or even closer to... Figure 4The smaller the pressure difference between the inner air outlet 151 and the first air outlet 14 or the outer channel 35 at the upper middle position, the less conducive it is to forming an effective airflow into the second air outlet assembly 15.

[0070] Furthermore, a more preferred solution disclosed herein may be that, in the blowing cleaning state, the first air outlet 14 located at the upper end of the housing 11 is obstructed for the airflow flowing out of the first space through the first air outlet 14. This can be achieved by blocking the airflow with a piston or similar device adapted to the diameter of the first air outlet 14, or by deflecting the installation angle. Specifically, one solution involves setting the internal air outlet at position b to match the position of the first air outlet 14 in the figure. During switching, the outlet is deflected by 60°, adjusting the air outlet 153 at position b to align with the dust collection channel. At this time, the first air outlet 14 can be sealed by the protective cover or other sealing device on the outside of the housing 11. Alternatively, another solution can be adopted... A valve structure is provided on the first air outlet 14 to exhaust air to the outside of the housing 11 in one direction. The design of the valve structure can be any conventional or feasible design in the existing scheme. The valve structure may include a hinge structure for connecting to the inner wall of the first air outlet 14 and a movable piece movably set on the hinge structure and rotatable about the axis of the hinge structure. The area of ​​the movable piece is interference-fitted with the cross section of the inner wall of the first air outlet 14 to meet the requirements of the controlled switch. The movable piece may be made of thin sheet-like lightweight rubber or plastic material, and its opening direction is towards the outside of the housing 11. When closed, the airflow from the first air outlet 14 into the housing 11 is obstructed.

[0071] As a public disclosure, in the absence of the external channel 35, during blower cleaning, the first air outlet 14 is in an open state, and air enters through the first air outlet 14, sequentially passing through the first space and the second air outlet assembly 15 before entering the dust suction duct. However, in this state, since the intake airflow and exhaust airflow are on the same side of the fan inside the housing 11, it may be necessary to consider setting the position of the first air outlet 14 closer to the fan 16 to ensure the shortest possible intake channel and higher intake efficiency.

[0072] Of course, in order to ensure that airflow can efficiently flow into the first space through the inner air outlet 151 and efficiently flow out through the air outlet 153 in the blowing cleaning mode, it may be necessary to minimize obstruction or airflow disturbance between the first air outlet 14, which serves as the air intake of the first space in this mode, and / or the outer channel 35. Therefore, the airflow path scheme of the second air duct adopts... Figure 10The middle air path 1 demonstrates a greater advantage. However, in the solution corresponding to air path 2, with the outer channel 35 removed and only the first air outlet 14 retained as the air inlet, the airflow in air path 2 will form a more obvious airflow rotation in the direction towards the fan 16. This is why, as mentioned earlier, it is necessary to consider the intake efficiency and optimize the setting position of the first air outlet 14.

[0073] Regarding the consideration of whether the second air outlet assembly 15 needs to be sealed in the vacuuming cleaning mode, the following explanation is provided. In one vacuuming cleaning solution disclosed herein, the following is adopted: Figure 6-8 The airflow design shown, regardless of whether the cleaning equipment has a structure similar to end plate 33, ensures that the first air outlet 14 is positioned closer to the fan 16, facilitating the exhaust of air drawn by the fan 16. Since the outer channel 35 or the second air outlet assembly 15 is located at a low-pressure end or a high-resistance position, it does not necessarily affect exhaust. Therefore, whether the second air outlet assembly 15 is closed in the vacuum cleaning mode is optional. If closed, a controllable second airflow control structure, such as an adjustable hinge, one-way valve, or plug, can be provided at the air outlet 153 and / or the inner air outlet 151 and / or the transition channel 152. Closing the hinge or one-way valve can restrict airflow through the second air outlet assembly 15 to the outside of the housing 11 during vacuum cleaning.

[0074] In one embodiment of this disclosure, the inner air outlet 151 of the second air outlet assembly 15 is disposed on the enclosed structure 12. When this embodiment is implemented in the blowing cleaning mode, the resulting second air duct configuration may be the optimal one, and the implemented air path follows... Figure 10 The air path 1 is shown in the diagram. At this point, the optimal pressure difference and the smoothest airflow path can be obtained between the outer channel 35 and the inner air outlet 151, thereby ensuring the blowing power and cleaning effect.

[0075] Furthermore, in one embodiment of this disclosure, in the first state, in the direction towards the suction duct 31, the transition channel 152 of the second air outlet assembly 15 has a protrusion. The protrusion includes a shell portion exposed outside the body assembly, with an air outlet port and an internal air outlet port respectively connected to both ends of the shell portion's inner cavity. The air outlet port 153 is formed at the other end of the protrusion. Of course, the design of the protrusion here is as follows... Figure 3 The right-angle corners in the design can be used not only for aesthetic purposes, but also internally. They can feature smooth transitions or internal right-angle transitions as shown in the image. Alternatively, angled corners, such as right-angle or obtuse-angle turns, can be used without significantly affecting the airflow.

[0076] In one embodiment of this disclosure, the outer dimensions of the protrusion match the dimensions of the first limiting cavity of the first limiting structure. The first limiting structure is disposed on the handshake assembly. In the second working state, the first limiting cavity of the first limiting structure is connected to the dust extraction duct.

[0077] Furthermore, as a handheld vacuum cleaner device, a first limiting structure with a first limiting cavity can be provided on the handle assembly 03. The outer dimensions of the protrusion can match the dimensions of the first limiting cavity of the first limiting structure. During air-blowing cleaning, since the limiting cavity of the first limiting structure is connected to the suction duct 31, the airflow requirement for cleaning via the suction duct is met. In addition, in this state, the first limiting structure is fitted into the end of the suction duct 31 or its adjacent first limiting cavity to restrict the body assembly 1 during air-blowing cleaning. This achieves positioning or locking of the body assembly 1 through the protrusion in air-blowing cleaning mode, further realizing the rational utilization of this design structure, satisfying both airflow transmission and fixing and positioning of moving parts.

[0078] In one embodiment of this disclosure, the handshake assembly is provided with a second limiting structure, which has a second limiting cavity. In the first operating state, the protrusion of the body assembly is fitted into the second limiting cavity of the second limiting structure. Whether the body assembly is observed in the first or second operating state, the first and second limiting structures are located at both ends of the body assembly—that is, near the first channel and near the closed structure, respectively.

[0079] Furthermore, the handshake assembly 03 is also provided with a second limiting structure 36 having a second limiting cavity. The second limiting cavity can be confined inside the handshake assembly 03, and the outer dimensions of the protrusion can match the dimensions of the second limiting cavity of the second limiting structure 36. That is, when the body assembly is in the first working state, the protrusion is engaged or fitted into the second limiting cavity. The second limiting structure 36 is confined to the vicinity of the end of the grip 32.

[0080] In one embodiment of this disclosure, the handshake assembly may further include an end plate 33 disposed above the grip, such as... Figure 6As shown, the space between the end plate 33 and the dust cup assembly restricts the installation space for the motor assembly. Furthermore, the outer channel 35 is located inside the end plate 33, i.e., formed between the motor assembly and the end plate. Thus, when the motor assembly is in the second operating state, the suction direction of the fan is consistent with the direction of the outer channel 35 pointing towards the first space. The end plate 33 can be designed simply as a limiting structure for restricting the machine body components or as a protective structure for protecting the user. Of course, it can also be used as a supporting structure for operation and control components, such as setting a display interface, power switch, adjustment buttons, and other conventional human-machine interaction units on the end plate 33. The control components are at least connected to the motor and / or sensors and / or microcomputers, and the sensors are set on the dust cup assembly and / or the handshake assembly and / or the motor assembly.

[0081] In one embodiment of this disclosure, the handshake component is further provided with a third limiting structure having a limit bit, that is, the second limiting structure is replaced by the third limiting structure, such as... Figure 7 As shown, the limiting position provided by the third limiting structure is a semi-open structure. The limiting position has a first adjacent surface and the protrusion has a second adjacent surface. In the first working state, the first adjacent surface and the second adjacent surface cooperate to allow the protrusion and the limiting position to form a shape engagement.

[0082] like Figure 7-8 As shown in the structure of 12, with the end plate 33 removed, the grip assembly 03 also features a third limiting structure with a limiting position. The limiting position has a first adjacent surface, and the protrusion has a second adjacent surface. The dimensions of the first adjacent surface match the dimensions of the second adjacent surface. The third limiting structure is positioned near the end of the grip 32 to restrict the movement of the body assembly 1 during vacuuming. In this solution, when... Figure 8 When performing vacuuming operations, the second air outlet assembly 15 may blow air directly at the user; however, the blowing intensity will be limited by the motor and will inevitably be lower. To avoid this, a second air control structure can be provided. Furthermore, the protrusion has a second surface that adapts to the outer surface of the adjacent handle 32, thereby optimizing the user's grip on the handle 32.

[0083] In summary, the protruding design of the second air outlet component can achieve the same airflow transfer and installation limit of the body component, serving both functional and assembly positioning purposes, reducing the need for additional independent limiting components, and simplifying the assembly process (assembly time can be reduced by 10%-15%).

[0084] The first limiting structure is adapted to the blowing mode. Through the precise cooperation between the protrusion and the limiting inner cavity, the body components and the dust collection duct are sealed and connected, avoiding airflow leakage during blowing (the airflow leakage rate can be controlled within 3%). The second limiting structure is adapted to the dust collection mode. It can firmly fix the body components, ensure the sealed connection between the dust collection duct and the dust cup components, and maintain the stability of the dust collection negative pressure.

[0085] Furthermore, this disclosure adopts a standardized size design with multiple limiting structures, which can realize the quick snap-fit ​​positioning of the body components and the mode switching time can be controlled within 10 seconds, improving the user's ease of operation.

[0086] Furthermore, in one embodiment of this disclosure, the edges of a plurality of first air outlets 14 distributed on the body assembly 1 have air outlet structures, which define the air outlet direction. A guide surface is provided along the edge of the air outlet structure, the extension direction of which coincides with or intersects with the tangential direction along the inner wall of the body assembly 1, and the included angle α at the intersection is ≤90°, such as... Figure 2 As shown.

[0087] like Figure 11 and 12 As shown, the cleaning equipment provided in this solution—a handheld vacuum cleaner—includes a motor assembly 01, a dust cup assembly 02, a handle assembly 03, etc. The housing 11 of the body assembly 1 is provided with several first air outlets 14, a second air outlet assembly 15, and a main motor, a fan 16, etc., disposed within the housing 11.

[0088] In one specific embodiment, when the handheld vacuum cleaner assembly needs to perform vacuuming, the main body assembly 1 is installed facing forward, with the first air outlet 14 of the main body assembly 1 in the open state and the second air outlet assembly 15 in the closed state. During vacuuming, the airflow path is as follows: First, the airflow enters the dust cup 21 from the external environment through the air duct within the handheld assembly 03, separating the introduced debris into the dust cup 21. Then, the airflow passes through the dust cup 21 and flows through the main motor of the main body assembly 1. Finally, the airflow passes through the main motor and returns to the external environment via the first air outlet 14 of the main body assembly 1, completing the vacuuming cycle. Figure 8 As shown, in the vacuum cleaning state, the first air outlet 14 is open, and the second air outlet assembly 15 is closed or open (a slight oncoming airflow may be generated when it is open): the first channel 13 is connected to the air outlet of the dust cup assembly 02, and forms a first air duct with the vacuum duct 31 and the first air outlet 14; at this time, the airflow direction in the first air duct is: drawn in by the vacuum duct 31, then through the dust cup assembly 02, through the first space and mainly out through the first air outlet 14.

[0089] Exhaust and noise control performance: The guide surface design of the first air outlet allows the exhaust air to flow out along the tangential direction of the machine body, avoiding direct blowing on the user, and the measured exhaust noise is 62dB (A-weighted), which is lower than the 70dB (A-weighted) of traditional vacuum cleaners; in addition, the vortex optimization design of the first air outlet (the intersection of the guide surface normals is outside the first space) improves the uniformity of exhaust airflow by 15% and reduces vibration noise caused by airflow turbulence.

[0090] When the handheld vacuum cleaner needs to perform blow-dry cleaning, the main body assembly 1 is installed in reverse. The first air outlet 14 of the main body assembly 1 is closed, and the second air outlet assembly 15 is open and connected to the air duct in the handle assembly 03. During blow-dry cleaning, the airflow path is as follows: First, the airflow is drawn in from the external environment through the main motor of the main body assembly 1, then flows through the second air outlet assembly 15 of the main body assembly 1, and finally flows through the second air outlet assembly 15 to the air duct of the handle assembly 03, and then flows out of the external environment through the air duct, completing the blow-dry cleaning cycle. Figure 10 As shown, in the blowing cleaning state, it is recommended to close the first air outlet 14 and open the second air outlet assembly 15: the closed structure 12 is adjacent to the air outlet of the dust cup assembly 02, the second air outlet assembly 15 is connected to the suction duct 31, and forms a second air duct with the first channel 13; at this time, the airflow direction in the second air duct is: drawn in from the first channel 13, and then flowed out through the second air outlet assembly 15 into the suction duct 31.

[0091] Cleaning effect: The airflow is drawn in through the outer channel (or the first channel) and transmitted to the dust suction duct through the second air outlet component. The measured blowing pressure can reach 2.2kPa and the wind speed can reach 18m / s. It can effectively blow away the dust accumulated on the air conditioner filter and the air purifier filter (the cleaning rate of deep dust accumulation on the filter can reach more than 90%). At the same time, it can blow away fallen leaves and sand particles in dust dead corners such as balconies and corners, and the cleaning range is extended to the scene that traditional vacuum cleaners cannot reach. Compared with manually brushing the filter, this mode can improve the filter cleaning efficiency by more than 3 times and avoid the dust hazards of manual cleaning.

[0092] Assembly and sealing performance: The protrusion of the second air outlet component fits precisely with the limiting cavity of the first limiting structure, resulting in an airflow leakage rate of only 2.5%, which is far lower than the 8%-10% leakage rate of conventional transfer air ducts in the industry, ensuring the effective utilization of the blowing airflow. At the same time, mode switching only requires three steps: disassembly, reversal, and snap-fit, with an average switching time of 8 seconds. Compared with the traditional solution that requires the replacement of a special blower nozzle, the operation efficiency is improved by more than 5 times.

[0093] Furthermore, in yet another embodiment of this disclosure, the dust cup assembly 02 may also provide a dust cup cover 22 for protecting the dust cup 21.

[0094] Furthermore, in yet another embodiment of this disclosure, a battery compartment 34 may be provided at the bottom of the handshake assembly 03 to achieve cordless operation.

[0095] The disclosed solution, through the adoption of a core design based on body components, enables rapid switching between vacuum cleaning mode and blow-dry cleaning mode by simply changing the position of components. This allows the same cleaning device to achieve efficient vacuuming and blowing cleaning effects, realizing multiple uses in one machine and effectively expanding the cleaning functions of traditional handheld vacuum cleaners, making home life more convenient.

[0096] It will be apparent to those skilled in the art that this disclosure is not limited to the details of the exemplary embodiments described above, and that this disclosure can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of this disclosure is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this disclosure. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0097] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An air duct assembly, characterized by, The application relates to a dust collecting and blowing device, which comprises a body assembly, a dust cup assembly and a hand grip assembly. In the dust collecting state, the body assembly is in the first working state, the first air outlet is in the through state, the first space is communicated with the air outlet of the dust cup assembly through the first channel, and the first space, the first air outlet and the dust collecting air duct form a first air duct. In the blowing cleaning state, the body assembly is in the second working state, the closed structure is defined at the air outlet of the dust cup assembly, the first space and the second air outlet assembly are communicated with the dust collecting air duct to form a second air duct. The second air outlet assembly comprises an air outlet interface, an inner air outlet interface communicated with the first space and a transition channel formed between the air outlet interface and the inner air outlet interface.

2. The air duct assembly of claim 1, wherein, The inner air outlet interface is arranged on the closed structure.

3. The air duct assembly of claim 2, wherein, The transition channel is formed with a convex part, the convex part comprises a shell part exposed outside the body assembly, and the inner cavities of the shell part are connected with the air outlet interface and the inner air outlet interface respectively.

4. The air duct assembly of claim 2, wherein, The size of the convex part is matched with the size of the first limiting inner cavity of the first limiting structure arranged on the hand grip assembly, and the first limiting inner cavity of the first limiting structure is communicated with the dust collecting air duct in the second working state.

5. The air duct assembly of claim 4, wherein, The hand grip assembly is further provided with a second limiting structure having a second limiting inner cavity, and the convex part is embedded in the second limiting inner cavity of the second limiting structure in the first working state.

6. The air duct assembly of claim 5, wherein, The hand grip assembly is further provided with a third limiting structure having a limiting position, the limiting position has a first abutting surface, the convex part has a second abutting surface, and the first abutting surface is matched with the second abutting surface in the first working state.

7. The air duct assembly of claim 5, wherein, The first air outlet is provided with a first air control structure which can be opened along the air flow direction of the first air duct.

8. The air duct assembly of claim 1, wherein, The edges of the first air outlets distributed on the body assembly are further provided with air outlet structures for limiting the air outlet direction.

9. The air duct assembly of claim 8, wherein, The edges along the air outlet structures are provided with guide surfaces, the extension direction of the guide surfaces is coincident with or intersects with the tangential direction along the inner wall of the body assembly, and the included angle alpha between the extension direction and the tangential direction is less than or equal to 90 degrees.

10. The air duct assembly of claim 9, wherein, The application further relates to a dust collecting and blowing device, which comprises a dust cup assembly, a hand grip assembly and an air duct assembly defined among the three assemblies, a motor and a fan are arranged in the first space of the body assembly, the dust cup assembly and the body assembly are adjacently arranged on the hand grip assembly, and the body assembly is detachable.

11. A cleaning apparatus, characterized by In the dust collecting state, the body assembly is in the first working state, the fan works to form air flow which sequentially enters the dust cup assembly, the first channel, the first space and the first air outlet through the dust collecting air duct. In the blowing cleaning state, the body assembly is in the second working state, the fan works to form air flow which sequentially enters the second air outlet assembly and the dust collecting air duct through the first space. ​ 12. The cleaning apparatus of claim 11, wherein, The handshaking assembly further comprises an end plate arranged above the handle, and a space between the end plate and the dust cup assembly is limited to the installation space of the motor assembly.

13. The cleaning apparatus of claim 12, wherein, An outer passage is further formed between the end plate or the end plate and the motor assembly, and the outer passage is communicated with the first space in the blowing cleaning state.

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