Cleaning apparatus and control method thereof
By introducing an air pressure generator and a switching device into home cleaning equipment, enhanced suction in negative pressure mode and reverse blowing in positive pressure mode are achieved, solving the problems of insufficient suction and easy clogging, and improving cleaning efficiency and user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHENZHEN LONGOOD INTELLIGENT ELECTRIC
- Filing Date
- 2026-04-22
- Publication Date
- 2026-06-05
Smart Images
Figure CN122140142A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of household appliance technology, and in particular to a cleaning device and its control method. Background Technology
[0002] As people's demands for efficiency and effectiveness in home cleaning continue to increase, household cleaning equipment (such as floor scrubbers and vacuum cleaners) has become a necessity for modern families. Cleaning equipment generally employs a single-fan mechanism to create a negative pressure suction structure in the main cleaning air path. Its working principle relies on the high-speed operation of the fan in the main cleaning air path to generate negative pressure inside the cleaning equipment, thereby drawing external dirt into the dust collection device through the working head, completing the cleaning process.
[0003] However, the suction power of the negative pressure suction structure used in cleaning equipment, which employs a single-fan mechanism as the main cleaning air path, is entirely limited by the power and speed of the fan, resulting in poor performance in certain cleaning scenarios. For example, when cleaning deep-seated dust in carpets, stubborn debris in narrow crevices, or highly adhesive, sticky stains, the cleaning equipment struggles to provide sufficient suction power instantly, preventing thorough removal of dirt in a single cleaning session. Users often need to perform multiple wiping or cleaning operations, which not only reduces cleaning efficiency but also negatively impacts the user experience. Summary of the Invention
[0004] This application provides a cleaning device and its control method, which can solve at least one of the above-mentioned technical problems.
[0005] In a first aspect, embodiments of this application provide a cleaning device, comprising: The main unit includes a main cleaning air path and a working head, with the working head located at the end of the main cleaning air path; and A pressure generating device and a switching device, wherein the pressure generating device includes a gas generating component, a first gas path and a second gas path, and the switching device is configured to control the gas generating component to selectively connect the first gas path or the second gas path so that the pressure generating device is in a negative pressure mode or a positive pressure mode. When the air pressure generating device is in negative pressure mode, the main cleaning air path draws air from the working head, and the gas generating component draws air from the working head through the first air path. When the air pressure generating device is in positive pressure mode, the gas generating component blows air into the opening of the working head through the second air passage.
[0006] In some embodiments, the gas generating component includes a gas generating structure and an energy storage container, the energy storage container being connected to the gas generating structure, a first gas path, and a second gas path, respectively; the gas generating structure is configured to evacuate the energy storage container to form a negative pressure or to fill it with gas to form a positive pressure; a switching device is disposed at the connection between the energy storage container and the first gas path and the second gas path, for selecting to connect the energy storage container to the first gas path or the second gas path.
[0007] In some embodiments, the gas generating structure includes a drive motor and a plunger pump driven by the drive motor. The plunger pump is connected to the energy storage container and is used to pump gas from the energy storage container to create a negative pressure or to fill the energy storage container with gas to create a positive pressure, driven by the drive motor.
[0008] In some embodiments, the main unit includes a push rod and a cleaning body connected together, a main cleaning air passage is disposed between the push rod and the cleaning body, a working head is disposed in the cleaning body, and a drive motor, a plunger pump and an energy storage container are arranged sequentially along the length of the push rod.
[0009] In some embodiments, the air pressure generating device further includes a transmission mechanism connected between the output shaft of the drive motor and the plunger of the plunger pump.
[0010] In some embodiments, the transmission mechanism includes a first bevel gear and a second bevel gear. The first bevel gear is connected to the output shaft of the drive motor, and the second bevel gear is rotatably disposed on the main unit and connected to the plunger. The first bevel gear and the second bevel gear are meshed together.
[0011] In some implementations, the plunger is connected to an eccentric position of the second bevel gear.
[0012] In some embodiments, the switching device includes an electromagnetic diverter valve, which is connected to the energy storage container of the pressure generator, the first gas path, and the second gas path, respectively. The electromagnetic flow divider valve is configured to switch between a first operating state and a second operating state: In the first working state, the energy storage container is connected to the first gas path and cut off from the second gas path, so that the gas pressure generating device is in the pumping mode. In the second operating state, the energy storage container is connected to the second gas path and disconnected from the first gas path, so that the gas pressure generating device is in the charging mode.
[0013] In some embodiments, the cleaning equipment also includes a power supply module electrically connected to the switching device and the main unit, configured to provide power to the switching device and the main unit; And / or, the cleaning equipment also includes operation buttons that are electrically connected to the switching device and configured to respond to user operation to trigger the switching device to switch between different operating states.
[0014] Secondly, embodiments of this application provide a control method for a cleaning device, applicable to the cleaning device of any of the above embodiments. The cleaning device further includes a controller electrically connected to the main unit, the air pressure generating device, and the switching device. The controller is used to perform the following method steps: The device status of the cleaning equipment is obtained, wherein the device status includes a cleaning status and a blockage status; When the cleaning equipment is in the cleaning state, the switching device and the main unit are controlled to work, and the air pressure generating device is controlled to be in the negative pressure mode; When the cleaning equipment is in the blocked state, the switching device and the main unit are controlled to work, and the air pressure generating device is controlled to be in the positive pressure mode.
[0015] The cleaning equipment and control method provided in this application include a main unit, a pressure generating device, and a switching device. The main unit has a main cleaning air path and a working head, with the working head located at the end of the main cleaning air path. The pressure generating device includes a gas generating component, a first air path, and a second air path. The switching device is configured to control the gas generating component to selectively connect to the first air path or the second air path, so that the pressure generating device is in a negative pressure mode or a positive pressure mode. When the pressure generating device is in a negative pressure mode, the main cleaning air path draws air into the working head, and the gas generating component draws air into the working head through the first air path. When the pressure generating device is in a positive pressure mode, the gas generating component blows air into the opening of the working head through the second air path. Thus, compared to cleaning devices in related technologies, the air pressure generating device of this application, in negative pressure mode, uses a gas generating component to additionally draw air from the working head through the first air path, forming a dual negative pressure synergy with the main cleaning air path of the host. This allows the cleaning device to instantly superimpose suction when needed (such as when the boost button is pressed), significantly increasing the negative pressure intensity at the working head, effectively overcoming the suction bottleneck in high-resistance cleaning scenarios, reducing repetitive operations, and improving the success rate of single cleaning and overall efficiency. Furthermore, this application uses a switching device to allow the air pressure generating device to switch between negative and positive pressure modes. When a blockage is detected or the user actively triggers it, the cleaning device switches to positive pressure mode, and the gas generating component blows air in the opposite direction through the second air path towards the opening of the working head. This instantaneous high-pressure airflow blows the entangled or blocked material away from the channel, achieving the self-cleaning or anti-blockage unblocking function of the cleaning device. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this application 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 of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the structure of the cleaning equipment provided in the embodiments of this application.
[0018] Figure 2 for Figure 1 A cross-sectional view of the cleaning equipment.
[0019] Figure 3 for Figure 1 A schematic diagram of the disassembled structure of the cleaning equipment.
[0020] Figure 4 This is a flowchart illustrating the control method for the cleaning equipment provided in an embodiment of this application.
[0021] Explanation of icon numbers: 10. Cleaning equipment; 100. Main unit; 110. Main cleaning air path; 120. Working head; 130. Push rod; 140. Cleaning body; 200. Air pressure generating device; 210. Gas generating component; 211. Gas generating structure; 212a. Drive motor; 212b. Plunger pump; 213. Energy storage container; 220. First air path; 230. Second air path; 240. Transmission mechanism; 241. First bevel gear; 242. Second bevel gear; 300. Switching device; 400. Power supply module; The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.
[0023] In the following description, when referring to the accompanying drawings, the same numbers in different drawings denote the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.
[0024] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, in the description of this application, unless otherwise stated, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.
[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0026] Please see Figure 1 , Figure 2 and Figure 3 This embodiment provides a cleaning device 10. The cleaning device 10 includes a main unit 100, an air pressure generator 200, and a switching device 300. The main unit 100 is provided with a main cleaning air passage 110 and a working head 120. The working head 120 is located at the end of the main cleaning air passage 110 and is used to contact the surface to be cleaned to perform a cleaning action.
[0027] Specifically, the main unit 100 can be a handheld stick vacuum cleaner, floor scrubber, or other type of cleaning equipment 10. The main cleaning air path 110 typically includes components such as a fan and a dust cup or wastewater tank. When the fan operates, it generates negative pressure in the main cleaning air path 110, thereby sucking up dust, stains, etc., through the working head 120. The working head 120 can be a suction nozzle or similar structure, with its opening facing the surface to be cleaned. It should be understood that although the figure shows the working head 120 located at the bottom of the main unit 100, in other embodiments, the working head 120 can also be connected to the main unit 100 via a flexible hose to form a separate structure, as long as it satisfies the function of sucking up dirt.
[0028] The pressure generating device 200 includes a gas generating component 210, a first gas passage 220, and a second gas passage 230. The switching device 300 is configured to control the gas generating component 210 to selectively connect the first gas passage 220 or the second gas passage 230, so that the pressure generating device 200 is in a negative pressure mode or a positive pressure mode.
[0029] When the air pressure generating device 200 is in negative pressure mode, the main cleaning air passage 110 draws air from the working head 120, and the gas generating component 210 draws air from the working head 120 through the first air passage 220.
[0030] Specifically, in negative pressure mode, the switching device 300 controls the gas generating component 210 to connect to the first air passage 220 while disconnecting it from the second air passage 230. At this time, the gas generating component 210 acts as a negative pressure source, connected to the main cleaning air passage 110 (e.g., connected between the working head 120 and the main fan) via the first air passage 220. When the gas generating component 210 operates, a negative pressure is formed inside it, and it assists in suctioning the working head 120 through the first air passage 220. This auxiliary suction force is superimposed on the suction force generated by the main fan in the main cleaning air passage 110, thereby creating a momentarily enhanced suction force at the working head 120. This embodiment provides additional momentary negative pressure through the gas generating component 210, which can significantly improve cleaning efficiency and avoid repeated wiping by the user.
[0031] When the air pressure generating device 200 is in positive pressure mode, the gas generating component 210 blows air into the opening of the working head 120 through the second air passage 230.
[0032] Specifically, in positive pressure mode, the switching device 300 controls the gas generating component 210 to connect with the second air passage 230 while disconnecting it from the first air passage 220. At this time, the gas generating component 210 acts as a positive pressure source, and the pre-stored high-pressure gas or the real-time generated high-pressure airflow is directly guided to the opening of the working head 120 through the second air passage 230. This high-pressure airflow can blow back towards the opening of the working head 120, expelling hair, fibers, or large particles of debris entangled in the opening, thus achieving rapid unblocking. This helps solve the pain point of traditional cleaning equipment requiring manual cleaning when blockages occur, improving the user experience.
[0033] In this embodiment, selective connection refers to the switching device 300 changing the on / off state of the gas path at the hardware level according to control commands or preset programs. For example, the switching device 300 may be a combination of one or more solenoid valves, mechanical valves, or flow path switchers. Through the operation of these hardware structures, the gas generating component 210 can switch the connection between the first gas path 220 and the second gas path 230, thereby realizing the switching between negative pressure mode and positive pressure mode. It should be understood that the specific form of the switching device 300 is not limited to the electromagnetic diverter valve described later in this embodiment, and any device that can realize selective gas path conduction should be covered within the protection scope of this application. For example, in some alternative embodiments, the switching device 300 may also be a manually operated mechanical valve, which can be manually switched by the user as needed.
[0034] Through the above solution, the cleaning device 10 in this embodiment achieves a dual-function design by using a pressure generating device 200 in conjunction with a switching device 300. For example, it can provide instantaneous negative pressure suction when powerful cleaning is needed, and positive pressure backflushing when blockage occurs. This design is not only compact and inexpensive, but also effectively solves the problems of insufficient suction, easy blockage, and difficulty in cleaning of single-fan devices in the prior art, significantly improving cleaning efficiency and intelligence.
[0035] Please see Figure 2 and Figure 3 In some embodiments, the gas generating component 210 includes a gas generating structure 211 and an energy storage container 213. The energy storage container 213 is connected to the gas generating structure 211, the first gas passage 220, and the second gas passage 230, respectively. The gas generating structure 211 is configured to evacuate the energy storage container 213 to form a negative pressure or to fill it with gas to form a positive pressure. The switching device 300 is disposed at the connection between the energy storage container 213 and the first gas passage 220 and the second gas passage 230, and is used to select the energy storage container 213 to be connected to the first gas passage 220 or the second gas passage 230.
[0036] The energy storage container 213 has a sealed cavity inside. Physically, the energy storage container 213 has two main interfaces: the first interface is connected to the gas generating structure 211 via a pipe for gas input or output; the second interface is connected to the first gas path 220 and the second gas path 230 via a switching device 300. In this embodiment, by setting up the energy storage container 213, the gas generating structure 211 can operate continuously, storing energy in the form of high-pressure or negative-pressure gas within the energy storage container 213. When instantaneous powerful cleaning is required, the energy storage container 213 can instantly release the stored energy, generating an instantaneous airflow far exceeding the rated power of the gas generating structure 211, thereby effectively solving the problem of insufficient instantaneous suction in the prior art. It should be understood that the energy storage container 213 can be an independent rigid tank or a flexible energy storage cavity formed using the internal cavity of the machine body. Its material and shape are not limited to the cylindrical shape shown in the illustration of this embodiment, as long as it can withstand positive and negative air pressure and has a sealing function.
[0037] Furthermore, the gas generating structure 211 includes a drive motor 212a and a plunger pump 212b driven by the drive motor 212a. The plunger pump 212b is connected to the energy storage container 213 and is used to evacuate the energy storage container 213 to form a negative pressure or to charge the energy storage container 213 to form a positive pressure under the drive of the drive motor 212a.
[0038] Specifically, the drive motor 212a serves as the power source, and its output shaft is connected to the transmission mechanism 240 of the plunger pump 212b. The plunger pump 212b employs a reciprocating piston structure, changing the cavity volume through the reciprocating motion of the piston within the cylinder, thereby achieving the function of pumping or charging air. The plunger pump 212b has excellent sealing performance; the piston and cylinder are sealed with a precision fit or sealing ring, effectively preventing gas leakage, which is crucial for establishing high negative or positive pressure in the energy storage container 213. The plunger pump 212b has high structural strength and can withstand long-term high-load operation, making it suitable for use in complex operating conditions and frequent start-stop scenarios such as the cleaning equipment 10. In this embodiment, when the drive motor 212a drives the plunger pump 212b to rotate in the forward direction, it extracts the gas in the energy storage container 213 and discharges it into the atmosphere, so that a negative pressure environment is formed in the energy storage container 213; when the drive motor 212a rotates in reverse or the intake and exhaust directions are switched by the mechanism, external gas can also be forced into the energy storage container 213 to form a positive pressure environment.
[0039] In some embodiments, the main unit 100 includes a push rod 130 and a cleaning body 140 connected together, a main cleaning air passage 110 is disposed between the push rod 130 and the cleaning body 140, a working head 120 is disposed between the cleaning body 140, and a drive motor 212a, a plunger pump 212b and an energy storage container 213 are arranged sequentially along the length of the push rod 130.
[0040] Specifically, the push rod 130, as the main component for user hand-held operation, is typically designed as a slender rod-like structure with a certain internal storage space. The cleaning body 140 is located at the bottom of the push rod 130 and is used to support components such as the working head 120 and the roller brush that perform cleaning actions.
[0041] In this embodiment, the drive motor 212a, plunger pump 212b, and energy storage container 213 of the air pressure generating device 200 are arranged sequentially along the length of the push rod 130. This layout makes full use of the originally unused longitudinal space inside the push rod 130, distributing the weight that was originally concentrated at the bottom upwards.
[0042] The drive motor 212a can be located at the upper or middle part of the push rod 130, with the plunger pump 212b immediately following and connected to the output end of the drive motor 212a. The energy storage container 213 can be positioned at the lower part of the push rod 130 near the cleaning body 140, or at any position on the push rod 130 depending on the center of gravity adjustment requirements. It should be understood that although this embodiment describes the sequential arrangement, in actual product design, the specific arrangement of these three components can be adjusted according to the overall weight distribution requirements of the machine. For example, to make the center of gravity of the machine closer to the user's hand to reduce wrist strain, the heavier drive motor 212a or energy storage container 213 can be positioned at the end of the push rod 130 near the handle; and to shorten the length of the air passage and reduce airflow loss, the energy storage container 213 can also be positioned near the cleaning body 140.
[0043] This effectively solves the problem of the bulky structure of the cleaning body 140, allowing it to be designed to be thinner and more compact, making it easier to reach under low furniture or into narrow corners for cleaning. Secondly, by distributing the weight along the push rod 130, the top-heavy nature of traditional devices is avoided, resulting in a more reasonable center of gravity distribution. This makes operation easier and less tiring for users, reducing fatigue during extended cleaning sessions. Furthermore, the drive motor 212a, plunger pump 212b, and energy storage container 213 extend along the internal space of the push rod 130, eliminating the need to increase the lateral dimensions of the machine and maintaining the cleanliness and accessibility of the cleaning device 10. This structural design not only achieves functional pneumatic energy storage and release but also cleverly resolves the contradiction between structural layout and ergonomics, embodying the concept of space reuse in mechanical design.
[0044] In some embodiments, the air pressure generating device 200 further includes a transmission mechanism 240 connected between the output shaft of the drive motor 212a and the plunger of the plunger pump 212b.
[0045] Because the internal space of the push rod 130 is usually elongated, the output shaft of the drive motor 212a often extends along the length of the push rod 130 for ease of arrangement. However, the piston movement direction of the plunger pump 212b sometimes needs to be adjusted according to the position of the air passage interface, or to match the installation angle of the energy storage container 213, its movement direction may not coincide with the axis of the motor output shaft. In this case, a transmission mechanism 240 is needed to realize the transmission of power and the conversion of direction. This transmission mechanism 240 not only transmits torque, but also undertakes the important task of converting the motion mode, that is, converting the high-speed rotational motion of the drive motor 212a into the reciprocating linear motion required by the plunger pump 212b.
[0046] Furthermore, the transmission mechanism 240 includes a first bevel gear 241 and a second bevel gear 242. The first bevel gear 241 is connected to the output shaft of the drive motor 212a, and the second bevel gear 242 is rotatably disposed on the main unit 100 and connected to the plunger. The first bevel gear 241 and the second bevel gear 242 are meshed together.
[0047] Specifically, the first bevel gear 241 is directly fitted onto or integrally formed on the output shaft of the drive motor 212a, rotating synchronously with the motor. The second bevel gear 242 is rotatably mounted on a bracket inside the push rod 130 via a rotating shaft or bearing housing. The first bevel gear 241 and the second bevel gear 242 mesh with each other, forming a bevel gear pair. Within the narrow cylindrical space of the push rod 130, the bevel gear transmission can flexibly change the direction of power transmission. For example, the output shaft of the drive motor 212a can be arranged along the axial direction of the push rod 130, while the axis of the plunger pump 212b can be arranged perpendicular to or at a certain angle to the axial direction of the push rod 130, thereby making full use of the radial space within the push rod 130, effectively reducing the outer diameter of the push rod 130, and making the overall structure more compact. In other embodiments, the transmission mechanism 240 can also adopt a crank-connecting rod structure.
[0048] Furthermore, the plunger is connected to an eccentric position on the second bevel gear 242. Specifically, the tail end of the plunger is not connected to the center of the second bevel gear 242, but rather to a position offset from the central axis. When the drive motor 212a drives the first bevel gear 241 to rotate, it drives the second bevel gear 242 to rotate through meshing. Because the plunger is connected to an eccentric position, the rotational motion of the second bevel gear 242 will cause the tail end of the plunger to perform a circular motion. At this time, because the plunger is restricted to linear motion by the inner wall of the pump cylinder, the tail end of the plunger, while performing a circular motion with the second bevel gear 242, will force the plunger to perform a reciprocating linear motion within the pump cylinder. This structure cleverly utilizes the principle of an eccentric wheel to convert rotational motion into linear motion.
[0049] The eccentric bevel gear structure offers significant advantages in space utilization. In this embodiment, the core component for motion conversion is integrated into the second bevel gear 242, eliminating the need for additional linkage mechanisms and drastically shortening the transmission chain. This results in a substantial reduction in the axial dimension of the entire pneumatic generator 200. This highly integrated transmission design not only reduces the failure rate and improves transmission efficiency but also frees up valuable space for the arrangement of other components within the push rod 130 (such as the energy storage container 213 and the battery), perfectly meeting the stringent requirements for lightweight and miniaturized design of the push rod 130-type cleaning device 10.
[0050] In some embodiments, the switching device 300 includes an electromagnetic diverter valve, which is connected to the energy storage container 213, the first gas path 220, and the second gas path 230 of the pressure generating device 200, respectively.
[0051] The electromagnetic diverter valve, as the core actuator for gas path switching, has one inlet (or outlet) connected to the energy storage container 213, and two working ports connected to the first gas path 220 and the second gas path 230 respectively. The electromagnetic diverter valve contains a valve core and an electromagnetic coil. The valve core is moved by energizing and de-energizing the electromagnetic coil, thereby changing the gas flow path. During the operation of the cleaning equipment 10, millisecond-level response speeds are often required to achieve instantaneous suction enhancement or rapid backflushing for unblocking. The electromagnetic diverter valve can complete the gas path switching instantly upon receiving a control signal, ensuring the timely release of air pressure energy. Furthermore, the electromagnetic diverter valve is easily electrically connected to the overall machine's controller (such as an MCU), enabling automated and intelligent mode switching without requiring manual operation of mechanical switches, thus enhancing the product's technological appeal and user experience.
[0052] Furthermore, the electromagnetic diversion valve is configured to switch between a first operating state and a second operating state. Specifically, in the first operating state, the valve core of the electromagnetic diversion valve is in the first position. At this time, the energy storage container 213 is connected to the first air passage 220 and disconnected from the second air passage 230, putting the air pressure generating device 200 in suction mode (i.e., negative pressure mode). In this state, the negative pressure gas pre-stored in the energy storage container 213 is rapidly released into the main cleaning air passage 110 through the first air passage 220. Since the pressure inside the energy storage container 213 is much lower than atmospheric pressure, the airflow is forcefully drawn in from the working head 120, enters the energy storage container 213 through the first air passage 220, or the negative pressure inside the energy storage container 213 is superimposed with the negative pressure of the main fan, thereby generating an instantaneous high negative pressure suction at the working head 120. This state is particularly suitable for scenarios requiring powerful vacuuming, such as cleaning deep dust in carpets or larger particles of debris.
[0053] In the second operating state, the valve core of the electromagnetic diverter valve moves to the second position under the action of electromagnetic force. At this time, the energy storage container 213 is connected to the second air passage 230 and cut off from the first air passage 220, so that the pressure generating device 200 is in the charging mode (i.e., positive pressure mode). In this state, if the energy storage container 213 is pre-stored with high-pressure gas (positive pressure), or if the gas generating structure 211 pumps high-pressure gas into the energy storage container 213 in real time, the high-pressure airflow will blow in the opposite direction through the second air passage 230 toward the opening of the working head 120. This reverse airflow can blow out hair, fibers or foreign objects entangled on the working head 120 or blocking the opening, achieving rapid unblocking. It should be understood that the electromagnetic diverter valve can also have an intermediate cut-off state, that is, the energy storage container 213 is cut off from both the first air passage 220 and the second air passage 230, which is used to maintain the pressure stability in the energy storage container 213 during equipment standby or energy storage.
[0054] In some embodiments, the cleaning device 10 further includes a power supply module 400, which is electrically connected to the switching device 300 and the main unit 100 and is configured to provide power to the switching device 300 and the main unit 100.
[0055] The power supply module 400, as the energy core of the entire machine, can take various forms. In a preferred embodiment, the power supply module 400 uses a high-energy-density lithium battery pack. Lithium batteries have the advantages of high discharge rate and long cycle life, which can meet the high current requirements for instantaneous start-up of the drive motor 212a, as well as the endurance requirements for long-term cleaning. The lithium battery pack can be located at the lower part of the push rod 130 near the cleaning body 140 to balance the center of gravity of the entire machine; it can also be located at the upper part of the push rod 130 near the handle for easy user removal and replacement; or it can be integrated inside the cleaning body 140, utilizing the space within the cleaning body 140. It should be understood that the power supply module 400 is not limited to lithium batteries; in other embodiments, nickel-metal hydride batteries, fuel cells, or supercapacitors can also be used as energy storage components. The power supply module 400 is electrically connected to the controller of the main unit 100, the main fan, and the drive motor 212a of the air pressure generator 200 via wires to form a power supply circuit. Specifically, since the plunger pump 212b in the pressure generating device 200 may generate a large current surge at startup, the power supply module 400 needs to have good discharge characteristics to ensure that the plunger pump 212b can quickly build up pressure. In addition, the power supply module 400 can also be connected to the switching device 300 (such as an electromagnetic diverter valve) through a voltage regulator circuit to provide it with a stable control voltage and ensure the accuracy of valve operation.
[0056] Furthermore, the cleaning device 10 also includes operation buttons that are electrically connected to the switching device 300 and configured to respond to user operations to trigger the switching device 300 to switch between different operating states.
[0057] The operation buttons are the key interface for interaction between user intent and machine action. Specifically, operation buttons are typically located in a position easily accessible to the user's hand, such as the handle at the top of the push rod 130. In one specific embodiment, the operation button can be a mechanical press button, which the user presses with their finger to trigger the corresponding function. When the user encounters deep dust in the carpet during cleaning and needs powerful vacuuming, they can press the button. After the operation button is pressed, an electrical signal (such as a high-level trigger signal or a pulse signal) is generated, which is transmitted to the controller or directly to the switching device 300 via a signal line. After receiving the signal, the controller interprets the user's operation intent and then controls the electromagnetic diversion valve to switch to the first working state (negative pressure mode), while simultaneously controlling the drive motor 212a to work, causing the energy storage container 213 to release negative pressure to assist vacuuming. When the user releases the button, the device can automatically return to the normal cleaning mode or the standby energy storage mode.
[0058] It should be understood that the form of the operation buttons is not limited to mechanical buttons. In other embodiments, the operation buttons can also be touch buttons, toggle switches, rotary switches, or voice control modules. For example, the device can be equipped with a toggle switch, with one side corresponding to negative pressure mode, the other side corresponding to positive pressure mode, and the middle position corresponding to the off mode. Alternatively, the device can integrate a voice recognition module, allowing users to trigger the switching device 300 by using voice commands such as "powerful suction" or "backflushing cleaning." This diverse interaction method can adapt to the operating habits of different user groups, improving the ease of use of the product. Furthermore, the number of operation buttons is not limited to one; multiple buttons can be set to correspond to different functions, such as dedicated "pressure boosting buttons" and "backflushing buttons," to prevent accidental operation. Through the cooperation of the operation buttons and the switching device 300, users can flexibly control the working mode of the cleaning device 10 according to the actual cleaning scenario.
[0059] Please see Figure 4 This embodiment provides a control method for a cleaning device 10, which is applied to the cleaning device 10 in any of the above embodiments. The cleaning device 10 also includes a controller electrically connected to the main unit 100, the air pressure generator 200, and the switching device 300. The controller is used to execute the following method steps.
[0060] Specifically, the controller can be an electronic component with data processing capabilities, such as a microcontroller unit (MCU), digital signal processor (DSP), or programmable logic controller (PLC), located inside the main unit 100. The controller is electrically connected to the drive motor 212a of the main unit 100, the drive motor 212a of the pneumatic generator 200, the electromagnetic diverter valve of the switching device 300, and various sensors via wires or cables on the circuit board, thereby achieving centralized control of all modules of the entire machine. It should be understood that the controller can be integrated onto the main control board, or it can be divided into multiple sub-control units that work collaboratively, depending on layout requirements.
[0061] Step S100: Obtain the device status of the cleaning device 10, wherein the device status includes cleaning status and blockage status.
[0062] Obtaining the device status is a prerequisite for achieving intelligent control. In this embodiment, the clean status refers to the cleaning device 10 being in normal vacuuming or floor washing mode, at which time the working head 120 can smoothly suck up garbage from the ground, and the airflow in the main cleaning air passage 110 is normal. The blocked status refers to the state where the suction port of the working head 120 or the inside of the main cleaning air passage 110 of the cleaning device 10 is blocked by large particles of garbage, hair, or fibers, resulting in obstructed airflow, reduced cleaning efficiency, or even inability to work.
[0063] Specifically, the controller can obtain the device status in several ways. In a preferred embodiment, the controller can determine the device status by detecting changes in the current of the drive motor 212a of the host 100 or the drive motor 212a of the air pressure generator 200. When the device is in a cleaning state, the motor load is relatively stable, and the current remains within the normal operating range. When the device is blocked, the airflow resistance increases, causing changes in the fan load (such as stall or no load), which in turn causes abnormal fluctuations in the motor current (such as a sudden increase or decrease in current). The controller has a preset current threshold range. When the detected real-time current exceeds this threshold range, the device is determined to be in a blocked state. In another embodiment, a pressure sensor can also be installed in the main cleaning air passage 110 or the energy storage container 213. The controller determines whether the air passage is unobstructed by reading the value of the pressure sensor. For example, when the negative pressure value in the main cleaning air passage 110 suddenly drops sharply or fluctuates violently, it is determined to be a blocked state. In addition, the speed sensor of the working head 120 roller brush can also be used to detect the speed of the roller brush. When the speed of the roller brush decreases abnormally or stops, it is determined to be a blocked state due to hair entanglement. This multi-parameter fusion judgment logic can effectively improve the accuracy of state recognition and avoid false triggering.
[0064] In step S200, when the cleaning equipment 10 is in a cleaning state, the control switching device 300 and the main unit 100 are operated, and the air pressure generating device 200 is controlled to be in negative pressure mode.
[0065] When the controller determines that the equipment is in a clean state, it means that the equipment is performing routine cleaning or needs enhanced suction for deep cleaning. At this time, the controller first controls the main fan of the host 100 to start for routine vacuuming. At the same time, the controller controls the air pressure generating device 200 to be in negative pressure mode. Specifically, the controller sends a first control signal to the switching device 300 (such as an electromagnetic diverter valve) to switch it to the first working state, that is, to connect the energy storage container 213 to the first air passage 220 and disconnect the energy storage container 213 from the second air passage 230. At this time, the negative pressure gas pre-stored in the energy storage container 213 is released into the main cleaning air passage 110 through the first air passage 220, which is superimposed with the suction of the main fan to form an instantaneous high negative pressure suction, effectively cleaning deep dust or stubborn stains on the carpet. After the negative pressure mode ends or when the equipment is in standby mode, the controller can also control the drive motor 212a of the air pressure generator 200 to drive the plunger pump 212b to evacuate the energy storage container 213, restoring it to the preset negative pressure value, in preparation for the next use. This control logic ensures that the equipment can call upon the stored energy at any time during routine cleaning, solving the problem of insufficient suction power of a single fan in the prior art.
[0066] In step S300, when the cleaning equipment 10 is blocked, the control switching device and the main unit 100 are operated, and the control air pressure generating device 200 is in positive pressure mode.
[0067] When the controller determines that the equipment is blocked through current detection, pressure detection, or speed detection, it immediately triggers the positive pressure backflushing cleaning logic. Specifically, the controller sends a second control signal to the switching device 300, switching it to a second working state, that is, connecting the energy storage container 213 to the second air passage 230 and cutting off the energy storage container 213 from the first air passage 220. At this time, if the energy storage container 213 is pre-stored with high-pressure gas, or if the controller controls the drive motor 212a of the air pressure generator 200 to drive the plunger pump 212b to fill the energy storage container 213 with gas, the high-pressure airflow will quickly blow back towards the opening of the working head 120 through the second air passage 230. This strong reverse airflow can instantly blow out the hair wrapped around the roller brush, the foreign objects blocking the suction port, or the dust accumulated deep in the pipe, achieving rapid unblocking. During the backflushing process, the controller can also control the main fan to stop or reverse, in order to cooperate with the positive pressure airflow to more effectively remove blockages.
[0068] Through the above control method, the cleaning equipment 10 can intelligently switch between negative pressure suction mode and positive pressure backflushing mode according to the actual working conditions, realizing automated control with two functions in one machine. This not only fully utilizes the potential of the air pressure generating device 200, but also effectively solves the pain points of low intelligence and excessive manual intervention when the cleaning equipment 10 faces complex cleaning scenarios.
[0069] To more intuitively demonstrate the practical application effect of the technical solution of this application, the working process of this embodiment will be described in detail below with reference to specific cleaning scenarios. It should be understood that the following scenarios are merely exemplary applications of the technical solution of this application and do not constitute a limitation on the scope of protection of this application.
[0070] When a user uses the cleaning device 10 of this embodiment to clean a long-pile carpet, tiny particles such as dust and mite excrement deep within the carpet often adhere to the roots of the carpet fibers, making it difficult for a conventional single-fan vacuum cleaner to remove them. In this case, the user can operate the control button located on the handle to trigger the negative pressure mode of the cleaning device 10.
[0071] Specifically, when the operation button is triggered, the controller receives a signal and immediately controls the switching device 300 to switch the electromagnetic diversion valve to the first working state, that is, to connect the energy storage container 213 to the first air passage 220, while simultaneously cutting off the energy storage container 213 from the second air passage 230. At this time, the negative pressure gas (e.g., a high vacuum gas of -90 kPa) pre-stored in the energy storage container 213 is instantly released into the main cleaning air passage 110 through the first air passage 220. Since the pressure inside the energy storage container 213 is much lower than the pressure in the main cleaning air passage 110, this negative pressure airflow and the negative pressure generated by the main fan of the host 100 are superimposed at the working head 120, forming an instantaneous high-intensity suction force. This superimposed suction force can penetrate the fiber layer of the long-pile carpet and powerfully extract the dust particles hidden inside. At the same time, the gas generating structure 211 (such as the plunger pump 212b) can work synchronously to continuously pump and replenish the energy storage container 213, maintaining the continuity of negative pressure output. By using this dual-power coordinated vacuuming method, stubborn dust that originally required users to push and pull repeatedly to clean can be completely removed with just one push and pull, greatly improving cleaning efficiency and solving the problem of insufficient suction and low cleaning efficiency of single-fan equipment in existing technologies when dealing with deep stains.
[0072] During the cleaning process, long hair, pet hair, or large particles can easily get caught in the roller brush or suction port of the working head 120, causing blockage of the main cleaning air passage 110. At this time, the load on the main fan will change drastically, and the current will be abnormal. The controller determines that the equipment is blocked by detecting the current change of the main unit 100 motor.
[0073] Upon detecting a blockage, the controller automatically executes the positive pressure backflushing logic. Specifically, the controller controls the gas generating structure 211 (driven by motor 212a driving plunger pump 212b) to reverse or switch the gas path, filling the energy storage container 213 with gas to create high-pressure gas (positive pressure). Subsequently, the controller controls the switching device 300 to switch the electromagnetic diversion valve to the second operating state, i.e., connecting the energy storage container 213 to the second gas path 230, while simultaneously cutting off the energy storage container 213 from the first gas path 220. The high-pressure gas in the energy storage container 213 is rapidly ejected through the second gas path 230, with the airflow direction directly pointing towards the opening of the working head 120. This strong reverse airflow can instantly dislodge foreign objects blocking the suction port or loosen and blow off hair entangled on the roller brush. During the backflushing process, the controller can also control the main fan to stop or reverse to cooperate with the positive pressure airflow to more effectively remove blockages. After the blockage is blown out, the equipment automatically returns to the normal cleaning mode. This process eliminates the need for users to manually clean the roller brush after stopping the machine, thus solving the pain points of existing cleaning equipment 10, such as difficulty in cleaning when clogged and poor user experience.
[0074] As can be seen from the two typical application scenarios above, this application cleverly integrates negative pressure suction and positive pressure backflushing functions by using a pressure generating device 200 in conjunction with a switching device 300. This not only solves the problems of insufficient suction and easy clogging of single-fan equipment in the prior art, but also achieves burst-like instantaneous power output through the energy buffering effect of the energy storage container 213, significantly improving cleaning performance without increasing motor power, and demonstrating significant technological progress.
[0075] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0076] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A cleaning device, characterized in that, include: The main unit is equipped with a main cleaning air passage and a working head, with the working head located at the end of the main cleaning air passage; as well as A pressure generating device and a switching device, wherein the pressure generating device includes a gas generating component, a first gas path and a second gas path, and the switching device is configured to control the gas generating component to selectively connect to the first gas path or the second gas path, so that the pressure generating device is in a negative pressure mode or a positive pressure mode; When the air pressure generating device is in the negative pressure mode, the main cleaning air path draws air from the working head, and the gas generating component draws air from the working head through the first air path. When the air pressure generating device is in the positive pressure mode, the gas generating component blows air into the opening of the working head through the second air passage.
2. The cleaning equipment according to claim 1, characterized in that, The gas generating component includes a gas generating structure and an energy storage container. The energy storage container is connected to the gas generating structure, the first gas path, and the second gas path, respectively. The gas generating structure is configured to evacuate the energy storage container to form a negative pressure or to fill it with gas to form a positive pressure. The switching device is located at the connection between the energy storage container and the first gas path and the second gas path, and is used to selectively connect the energy storage container to the first gas path or the second gas path.
3. The cleaning equipment according to claim 2, characterized in that, The gas generating structure includes a drive motor and a plunger pump driven by the drive motor. The plunger pump is connected to the energy storage container and is used to evacuate the energy storage container to form a negative pressure or to fill the energy storage container with gas to form a positive pressure under the drive of the drive motor.
4. The cleaning equipment according to claim 3, characterized in that, The main unit includes a push rod and a cleaning body connected together. The main cleaning air passage is disposed between the push rod and the cleaning body. The working head is disposed in the cleaning body. The drive motor, the plunger pump and the energy storage container are arranged sequentially along the length of the push rod.
5. The cleaning equipment according to claim 3, characterized in that, The air pressure generating device also includes a transmission mechanism, which is connected between the output shaft of the drive motor and the plunger of the plunger pump.
6. The cleaning equipment according to claim 5, characterized in that, The transmission mechanism includes a first bevel gear and a second bevel gear. The first bevel gear is connected to the output shaft of the drive motor, and the second bevel gear is rotatably disposed on the host and connected to the plunger. The first bevel gear and the second bevel gear are meshed together.
7. The cleaning equipment according to claim 6, characterized in that, The plunger is connected to the eccentric position of the second bevel gear.
8. The cleaning equipment according to claim 1, characterized in that, The switching device includes an electromagnetic diversion valve, which is connected to the energy storage container, the first gas path, and the second gas path of the pressure generating device, respectively. The electromagnetic diverter valve is configured to switch between a first operating state and a second operating state: In the first working state, the energy storage container is connected to the first gas path and disconnected from the second gas path, so that the gas pressure generating device is in the air extraction mode. In the second operating state, the energy storage container is connected to the second gas path and disconnected from the first gas path, so that the pressure generating device is in the inflation mode.
9. The cleaning equipment according to claim 1, characterized in that, The cleaning equipment also includes a power supply module, which is electrically connected to the switching device and the main unit and is configured to provide power to the switching device and the main unit. And / or, the cleaning device further includes operation buttons electrically connected to the switching device and configured to respond to user operation to trigger the switching device to switch between different operating states.
10. A control method for a cleaning device, characterized in that, The cleaning equipment according to any one of claims 1 to 9 further includes a controller electrically connected to the main unit, the air pressure generating device, and the switching device, the controller being used to perform the following method steps: The device status of the cleaning equipment is obtained, wherein the device status includes a cleaning status and a blockage status; When the cleaning equipment is in the cleaning state, the switching device and the main unit are controlled to work, and the air pressure generating device is controlled to be in the negative pressure mode; When the cleaning equipment is in the blocked state, the switching device and the main unit are controlled to work, and the air pressure generating device is controlled to be in the positive pressure mode.