Cleaner and control method thereof

Abstract

The application relates to a cleaner and a control method thereof. The method comprises the following steps: detecting a first running state of a fan system at present, wherein the fan system comprises at least two fans, the running state of the fan system has a series state and a parallel state; acquiring an inner static pressure and an outer static pressure of a dust box inlet of the cleaner; determining a resistance interval of a current working environment of the cleaner according to a profile parameter of the dust box inlet, the inner static pressure and the outer static pressure, and determining an actually optimal second running state of the fan system in the resistance interval; in the case that the first running state is inconsistent with the second running state, controlling the fan system to switch from the first running state to the second running state, and the second running state is the other one of the series state and the parallel state. The application solves the technical problem that a single fan needs to have too high input power to improve cleaning efficiency, and the power is too high to cause too large noise.

Description

Technical Field

[0001] This application relates to the field of cleaner technology, and more particularly to a cleaner and its control method. Background Technology

[0002] Vacuum cleaners are powerful tools for cleaning dust in hard-to-reach corners and small spaces. When purchasing a vacuum cleaner, users usually pay attention to indicators such as power, noise, and cleaning rate.

[0003] Currently, in related technologies, vacuum cleaners all adopt a single centrifugal fan solution. When using this type of cleaner, users mainly increase the fan speed to improve the cleaning rate. However, as the fan speed increases, the fan input power also increases, and the noise increases accordingly, which greatly affects the user experience. Moreover, the cleaning rate improvement of the single-fan solution is limited.

[0004] There is currently no effective solution to the problem that improving the cleaning efficiency of a single fan requires excessively high input power, which leads to excessive noise. Summary of the Invention

[0005] This application provides a cleaner and its control method to solve the technical problem that a single fan requires excessively high input power to improve cleaning efficiency, which leads to excessive noise.

[0006] According to one aspect of the embodiments of this application, this application provides a cleaner control method, comprising: detecting a first operating state of a fan system, wherein the fan system includes at least two fans, and the operating state of the fan system has a series state and a parallel state. When the fan system is in a series state, the fans are connected in series sequentially; when the fan system is in a parallel state, the fans are connected in parallel with each other. The first operating state is one of the series state and the parallel state. The method also includes: acquiring the inner static pressure and the outer static pressure of the dust box inlet of the cleaner; determining the resistance range of the current working environment of the cleaner based on the profile parameters of the dust box inlet, the inner static pressure, and the outer static pressure, and determining the second operating state of the fan system that is actually optimal within the resistance range; and controlling the fan system to switch from the first operating state to the second operating state when the first operating state and the second operating state are inconsistent. The second operating state is the other of the series state and the parallel state.

[0007] Optionally, determining the resistance range of the current working environment of the cleaner based on the profile parameters of the dust box inlet, the inner static pressure, and the outer static pressure, and determining the actual optimal second operating state of the fan system within the resistance range includes: determining the actual airflow through the fan system using the profile parameters, the inner static pressure, and the outer static pressure; comparing the actual airflow with a first airflow threshold, where the first airflow threshold is a standard airflow threshold; when the actual airflow is less than or equal to the first airflow threshold, determining the resistance range of the current working environment of the cleaner as a first high-resistance system range, and matching the actual optimal second operating state of the fan system based on the first high-resistance system range as a series state; when the actual airflow is greater than the first airflow threshold, determining the resistance range of the current working environment of the cleaner as a first low-resistance system range, and matching the actual optimal second operating state of the fan system based on the first low-resistance system range as a parallel state.

[0008] Optionally, determining the resistance range of the current working environment of the cleaner based on the profile parameters of the dust box inlet, the inner static pressure, and the outer static pressure, and determining the actual optimal second operating state of the fan system within the resistance range further includes: determining the actual airflow through the fan system using the profile parameters, the inner static pressure, and the outer static pressure; comparing the actual airflow with a second airflow threshold, wherein the second airflow threshold is the difference between the standard airflow threshold and the airflow correction amount, the airflow correction amount is obtained by multiplying the standard airflow threshold by a first weighting parameter, and the first weighting parameter is a real number ranging from 0 to 0.5; when the actual airflow is less than or equal to the second airflow threshold, determining the resistance range of the current working environment of the cleaner as the second high-resistance system range, and matching the actual optimal second operating state of the fan system based on the second high-resistance system range as a series state; when the actual airflow is greater than the second airflow threshold, determining the resistance range of the current working environment of the cleaner as the second low-resistance system range, and matching the actual optimal second operating state of the fan system based on the second low-resistance system range as a parallel state.

[0009] Optionally, the method further includes pre-determining a standard airflow threshold in the following manner: performing vacuum-airflow tests on the fan system in both series and parallel states; determining a first vacuum-airflow curve obtained from the series test and a second vacuum-airflow curve obtained from the parallel test; and taking the airflow corresponding to the intersection of the first and second vacuum-airflow curves to obtain the standard airflow threshold.

[0010] Optionally, determining the resistance range of the current working environment of the cleaner based on the profile parameters of the dust box inlet, the inner static pressure, and the outer static pressure, and determining the actual optimal second operating state of the fan system within the resistance range, further includes: determining the actual air volume of the fan system using the profile parameters, the inner static pressure, and the outer static pressure; comparing the actual air volume with a first air volume threshold, wherein the first air volume threshold is a standard air volume threshold; if the actual air volume is less than or equal to the first air volume threshold, determining the resistance range of the current working environment of the cleaner as the third high resistance system range, and matching the actual optimal second operating state of the fan system based on the third high resistance system range as a series state; if the actual air volume is greater than the first air volume threshold, determining the resistance range of the current working environment of the cleaner as the third low resistance system range, and matching the actual optimal second operating state of the fan system based on the third low resistance system range as a parallel state.

[0011] Optionally, determining the resistance range of the current working environment of the cleaner based on the profile parameters of the dust box inlet, the inner static pressure, and the outer static pressure, and determining the actual optimal second operating state of the fan system within the resistance range further includes: determining the actual air volume of the fan system using the profile parameters, the inner static pressure, and the outer static pressure; comparing the actual air volume with a second air volume threshold, wherein the second air volume threshold is the difference between the standard air volume threshold and the air volume correction, the air volume correction is obtained by multiplying the standard air volume threshold by a second weighting parameter, and the second weighting parameter is a real number ranging from 0 to 0.5; when the actual air volume is less than or equal to the second air volume threshold, the resistance range of the current working environment of the cleaner is determined to be the fourth high-resistance system range, and the actual optimal second operating state of the fan system matched based on the fourth high-resistance system range is a series state; when the actual air volume is greater than the second air volume threshold, the resistance range of the current working environment of the cleaner is determined to be the fourth low-resistance system range, and the actual optimal second operating state of the fan system matched based on the fourth low-resistance system range is a parallel state.

[0012] Optionally, the method further includes pre-determining a standard air tile threshold as follows: performing vacuum-air tile tests on the fan system in both series and parallel states; determining a first vacuum-air tile curve obtained from the series test and a second vacuum-air tile curve obtained from the parallel test; and taking the air tile corresponding to the intersection of the first and second vacuum-air tile curves to obtain the standard air tile threshold.

[0013] Optionally, if the first operating state and the second operating state are inconsistent, controlling the fan system to switch from the first operating state to the second operating state includes: sending a first switching command to the state switching actuator to switch the fan system from the first operating state to the second operating state through the state switching actuator.

[0014] Optionally, the method further includes: detecting the operating status of the fan system before the cleaner stops operating; if the operating status is in parallel, sending a second switching command to the state switching actuator to switch the fan system from parallel to series, so that the cleaner will start in series the next time it starts.

[0015] According to another aspect of the embodiments of this application, this application provides a cleaner, including: a fan system including at least two fans, the fan system having a series state and a parallel state, wherein when the fan system is in the series state, the fans are connected in series sequentially, and when the fan system is in the parallel state, the fans are connected in parallel with each other; a state detection sensor for detecting the current first operating state of the fan system, wherein the first operating state is one of the series state and the parallel state; a pressure sensor for acquiring the inner static pressure and the outer static pressure of the dust box inlet of the cleaner; a processor for determining the resistance range of the current working environment of the cleaner based on the contour parameters of the dust box inlet, the inner static pressure and the outer static pressure, and determining the actual optimal second operating state of the fan system in the resistance range, and issuing a switching command when the first operating state and the second operating state are inconsistent, wherein the second operating state is the other of the series state and the parallel state; and a state switching actuator for switching the fan system from the first operating state to the second operating state according to the switching command.

[0016] Compared with related technologies, the technical solutions provided in this application have the following advantages:

[0017] The technical solution of this application involves detecting the current first operating state of a fan system. The fan system includes at least two fans, and its operating states include series and parallel connections. In series connection, the fans are connected in series sequentially; in parallel connection, the fans are connected in parallel with each other. The first operating state is one of these two states. The application also involves acquiring the inner and outer static pressures at the dustbin inlet of the cleaner. Based on the dustbin inlet profile parameters, inner and outer static pressures, the application determines the resistance range of the current working environment of the cleaner and identifies the optimal second operating state for the fan system within this resistance range. If the first and second operating states are inconsistent, the application controls the fan system to switch from the first to the second operating state, which is the other of these two states. This application employs a fan system with at least two fans, setting the system to series or parallel connection in different scenarios. This effectively improves the cleaning efficiency while maintaining low power and low noise levels for the entire cleaner, solving the technical problem that a single fan requires excessively high input power to improve cleaning efficiency, leading to excessive noise. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the hardware environment for an optional cleaner control method provided according to an embodiment of this application;

[0021] Figure 2 This is a schematic flowchart of an optional cleaner control method provided according to an embodiment of this application;

[0022] Figure 3 This is a schematic diagram of an optional series operation of wind turbines according to an embodiment of this application;

[0023] Figure 4 This is a schematic diagram illustrating an optional parallel operation of wind turbines according to an embodiment of this application;

[0024] Figure 5 This is a schematic diagram of an optional vacuum-airflow curve for a fan system according to an embodiment of this application;

[0025] Figure 6This is a schematic diagram of an optional vacuum-air bearing curve for a fan system according to an embodiment of this application;

[0026] Figure 7 This is a schematic diagram of an optional cleaner structure provided in an embodiment of this application. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] In the following description, the use of suffixes such as "module," "part," or "unit" to denote elements is solely for the purpose of illustration and has no specific meaning in itself. Therefore, "module" and "part" may be used interchangeably.

[0029] In related technologies, vacuum cleaners all use a single centrifugal fan. When using such cleaners, users mainly increase the fan speed to improve the cleaning rate. However, as the fan speed increases, the fan input power also increases, and the noise increases, which greatly affects the user experience. Moreover, the cleaning rate improvement of the single-fan solution is limited.

[0030] To address the problems mentioned in the background art, according to one aspect of the embodiments of this application, an embodiment of a cleaner control method is provided.

[0031] Optionally, in the embodiments of this application, the above-described cleaner control method can be applied to, for example... Figure 1 The hardware environment shown consists of terminal 101 and server 103. Figure 1 As shown, server 103 is connected to terminal 101 via a network and can be used to provide services (such as data storage services, data analysis services, policy judgment services, task scheduling services, etc.) to the terminal or clients installed on the terminal. Database 105 can be set up on the server or independently of the server to provide data storage services to server 103. The aforementioned network includes, but is not limited to: wide area network, metropolitan area network or local area network. Terminal 101 includes, but is not limited to, cleaners, PCs connected to the cleaner network, Bluetooth connected, mobile phones, tablets, etc.

[0032] A cleaner control method in this embodiment can be executed by server 103 or by terminal 101, such as... Figure 2 As shown, the method may include the following steps:

[0033] Step S202: Detect the current first operating state of the fan system. The fan system includes at least two fans. The fan system can operate in a series connection or a parallel connection. When the fan system is in a series connection, the fans are connected in series sequentially. When the fan system is in a parallel connection, the fans are connected in parallel with each other. The first operating state is one of these two states. Figure 3 As shown, taking a fan system with three fans as an example, in series configuration, the three fans are connected in series sequentially. The airflow flows from the inlet side of one fan to the outlet side, and then to the inlet side of the next fan. Figure 4 As shown, taking a fan system with 3 fans as an example, in parallel mode, the 3 fans are connected in parallel with each other, and the airflow enters the air inlet side of each fan from each branch duct, and then flows out from the air outlet side of each fan.

[0034] Step S204: Obtain the inner and outer static pressures of the cleaner dust box inlet.

[0035] Step S206: Determine the resistance range of the current working environment of the cleaner based on the contour parameters of the dust box inlet, the inner static pressure and the outer static pressure, and determine the actual optimal second operating state of the fan system within the resistance range.

[0036] Step S208: If the first operating state and the second operating state are inconsistent, control the fan system to switch from the first operating state to the second operating state, where the second operating state is either the series state or the parallel state.

[0037] Through the above steps S202 to S208, this application uses a fan system with at least two fans. In different scenarios, the fan system is set in series or parallel, which effectively improves the cleaning rate while keeping the overall cleaner low power and low noise. This solves the technical problem that a single fan needs too much input power to improve cleaning efficiency, and that excessive power leads to excessive noise.

[0038] In the technical solution provided in step S202, the fan system includes at least two fans installed in the cleaner, and the operating state of the fan system includes a series connection or a parallel connection. In this embodiment, a status detection sensor can be installed at the location of each fan in the fan system to detect the first operating state of the fan system.

[0039] In the technical solution provided in step S204, a pressure sensor can be installed at the dust box inlet of the cleaner to obtain the inner static pressure and outer static pressure of the dust box inlet through the pressure sensor.

[0040] In the technical solution provided in step S206, the contour parameters of the dust box inlet may include the area and perimeter of the dust box inlet, and the resistance range includes a high-resistance system range and a low-resistance system range. In related technologies, single-fan cleaners must increase fan speed to improve cleaning efficiency in both low-resistance and high-resistance system ranges, inevitably increasing fan power and noise. This increased cleaning efficiency comes at the cost of severely impacting user experience. Moreover, the cleaning efficiency improvement of a single fan is limited and cannot meet user needs. The technical solution of this application uses a fan system with at least two fans. Fans are connected in series in the high-resistance system and in parallel in the low-resistance system. Research shows that connecting fans in series in a high-resistance system generates additional static pressure while maintaining low power operation for each fan. Increased static pressure increases suction, causing dust to be drawn into the dust box, thereby improving the cleaning efficiency. Parallel placement of fans in a low-resistance system generates additional airflow. This increased airflow also draws dust into the dustbin, further improving the cleaning efficiency. Therefore, this effectively enhances the cleaning efficiency while maintaining low power and low noise levels for the entire cleaner unit. It solves the technical problem of requiring excessively high input power for a single fan to improve cleaning efficiency, which leads to excessive noise. This will be explained in detail below.

[0041] This application provides a method for determining the resistance range using airflow.

[0042] Optionally, the resistance range of the current working environment of the cleaner is determined based on the profile parameters of the dust box inlet, the inner static pressure, and the outer static pressure, and the actual optimal second operating state of the fan system within the resistance range is determined, including:

[0043] Step 1: Determine the actual air volume flowing through the fan system using profile parameters, inner static pressure, and outer static pressure.

[0044] In this embodiment of the application, determining the actual air volume flowing through the fan system using contour parameters, inner static pressure, and outer static pressure includes:

[0045]

[0046] Where Q1 is the actual air volume, A is the dust box inlet area, C is the dust box inlet perimeter, p1 is the static pressure outside the dust box inlet, and p2 is the static pressure inside the dust box inlet.

[0047] Step 2: Compare the actual air volume with the first air volume threshold, where the first air volume threshold is the standard air volume threshold.

[0048] Step 3: When the actual air volume is less than or equal to the first air volume threshold, determine the resistance range of the current working environment where the cleaner is located as the first high resistance system range, and match the second optimal operating state of the fan system based on the first high resistance system range as the series state; when the actual air volume is greater than the first air volume threshold, determine the resistance range of the current working environment where the cleaner is located as the first low resistance system range, and match the second optimal operating state of the fan system based on the first low resistance system range as the parallel state.

[0049] In this embodiment, the standard airflow threshold is obtained in advance through vacuum-airflow testing of the fan system. Specifically, the fan system is tested in both series and parallel configurations; a first vacuum-airflow curve obtained in the series configuration and a second vacuum-airflow curve obtained in the parallel configuration are determined; the airflow corresponding to the intersection of the first and second vacuum-airflow curves is taken to obtain the standard airflow threshold.

[0050] In the embodiments of this application, the vacuum-airflow curve of the fan system obtained by testing is as follows: Figure 5 As shown, the first vacuum-airflow curve is obtained by testing the fan system in series, and the second vacuum-airflow curve is obtained by testing the fan system in parallel. Based on these vacuum-airflow curves, the following conclusions can be drawn regarding the series-parallel operation of the fan system:

[0051] For wind turbine systems operating in parallel:

[0052] 1. Under free space conditions, the system resistance is zero (X-axis), and the parallel flow rate of the fan system is n times the flow rate of a single fan, where n is the number of fans;

[0053] 2. Under fully enclosed system conditions, the flow rate is zero (Y-axis), and the static pressure of the parallel fan system is the same as that of a single fan.

[0054] 3. For the same resistance system, parallel connection of fan systems generates a larger flow rate;

[0055] 4. When a fan system is connected in parallel to a resistance system, the higher the system resistance, the smaller the flow rate increase. That is, the flow rate increase of a fan system connected in parallel is 1 to n times that of a single fan.

[0056] 5. When the fan system is connected in parallel to the resistance system, the higher the system resistance, the smaller the static pressure increase, and it will not exceed the maximum static pressure provided by a single fan in free space.

[0057] For series operation of wind turbine systems:

[0058] 1. Under free space conditions, the system resistance is zero (X-axis), and the flow rate of the fan system in series is the same as that of a single fan.

[0059] 2. Under fully enclosed system conditions, the flow rate is zero (Y-axis), and the static pressure of the fan system in series is n times that of the static pressure of a single fan;

[0060] 3. In the same resistance system, a series connection of fan systems generates greater static pressure;

[0061] 4. The fan system is connected in series in the resistance system. The higher the system resistance, the smaller the flow rate increase, and it will not exceed the maximum flow rate provided by a single fan in free space.

[0062] 5. When a fan system is connected in series with a resistance system, the higher the system resistance, the smaller the static pressure increase. That is, the static pressure increase of a fan system connected in series is 1 to n times that of a single fan.

[0063] In summary, at the system operating point, both system flow and pressure will increase regardless of whether fans are connected in series or parallel. Whether fans should be connected in series or parallel depends on the system's resistance level. In a high-resistance system, placing fans in series will result in an additional pressure rise, while the increase in flow is negligible; in a low-resistance system, placing fans in parallel will result in an additional flow, while the increase in static pressure is negligible. Figure 5 It can be seen that, compared with a single fan, a fan system with at least two fans operating in series and parallel can improve the cleaning rate with lower power in different resistance ranges, thus ensuring user experience and meeting cleaning needs.

[0064] Therefore, switching between series and parallel operation at the intersection of the PQ curves (vacuum-airflow curves) of the series-parallel fan system can change the performance of the fan system and the overall cleaning rate. Thus, the technical solution of this application can use the airflow corresponding to the intersection of the PQ curves of the series-parallel fan system as the standard airflow threshold, and then compare the actual measured airflow with the standard airflow threshold.

[0065] In this embodiment, the airflow can be used to determine whether the current working environment of the cleaner is a high-resistance system or a low-resistance system. A fan system can be connected in series in a high-resistance system and in parallel in a low-resistance system. In a high-resistance system, the series connection generates additional static pressure while keeping both fans operating at low power. This increased static pressure enhances suction, causing dust to be drawn into the dustbin, thus improving the cleaning efficiency. Similarly, the parallel connection in a low-resistance system generates additional airflow, which also increases airflow and causes dust to be drawn into the dustbin, further improving the cleaning efficiency. Therefore, this effectively improves the cleaning efficiency while maintaining low power and low noise levels for the entire cleaner, solving the technical problem that a single fan requires excessively high input power to improve cleaning efficiency, leading to excessive noise.

[0066] In practical applications, it was further discovered that while switching the operating state of the fan system at the standard airflow threshold causes some changes in performance and cleaning rate, these changes are relatively minor. Therefore, in another embodiment of this application, to further improve the effects of low power consumption, low noise, and high cleaning rate, the technical solution of this application proposes a scheme to switch the operating state of the fan system in advance, thereby allowing the fan system to operate under high airflow conditions. Specifically, the method further includes:

[0067] Step 1: Determine the actual air volume flowing through the fan system using profile parameters, inner static pressure, and outer static pressure.

[0068] Step 2: Compare the actual air volume with the second air volume threshold. The second air volume threshold is the difference between the standard air volume threshold and the air volume correction amount. The air volume correction amount is obtained by multiplying the standard air volume threshold by the first weight parameter. The first weight parameter is a real number with a value range of 0 to 0.5.

[0069] In this embodiment of the application, the first weight parameter can be set according to actual needs in practical applications, and preferably set to 0.2.

[0070] In this embodiment of the application, switching the operating state of the wind turbine system in advance means reducing the judgment threshold.

[0071] Step 3: When the actual air volume is less than or equal to the second air volume threshold, determine the resistance range of the current working environment where the cleaner is located as the second high resistance system range, and match the actual optimal second operating state of the fan system as the series state based on the second high resistance system range; when the actual air volume is greater than the second air volume threshold, determine the resistance range of the current working environment where the cleaner is located as the second low resistance system range, and match the actual optimal second operating state of the fan system as the parallel state based on the second low resistance system range.

[0072] Since air bearings are one of the evaluation indicators of the output performance of vacuum cleaners, this application also provides a method for determining the resistance range using air bearings.

[0073] Optionally, determining the resistance range of the current working environment of the cleaner based on the profile parameters of the dust box inlet, the inner static pressure, and the outer static pressure, and determining the actual optimal second operating state of the fan system within the resistance range, also includes:

[0074] Step 1: Determine the actual air bearing of the fan system using profile parameters, inner static pressure, and outer static pressure.

[0075] In this embodiment of the application, determining the actual air bearing of the fan system using contour parameters, inner static pressure, and outer static pressure includes:

[0076]

[0077] Where AW1 is the actual air volume, A is the dust box inlet area, C is the dust box inlet perimeter, p1 is the static pressure outside the dust box inlet, and p2 is the static pressure inside the dust box inlet.

[0078] Step 2: Compare the actual air tile with the first air tile threshold, where the first air tile threshold is the standard air tile threshold.

[0079] Step 3: When the actual air resistance is less than or equal to the first air resistance threshold, the resistance range of the current working environment of the cleaner is determined as the third high resistance system range. Based on the third high resistance system range, the second optimal operating state of the fan system is matched as the series state. When the actual air resistance is greater than the first air resistance threshold, the resistance range of the current working environment of the cleaner is determined as the third low resistance system range. Based on the third low resistance system range, the second optimal operating state of the fan system is matched as the parallel state.

[0080] In this embodiment, the standard air bearing threshold is obtained in advance through a vacuum-air bearing test on the fan system. Specifically, the fan system is tested in both series and parallel configurations; a first vacuum-air bearing curve obtained from the series configuration and a second vacuum-air bearing curve obtained from the parallel configuration are determined; the air bearing value corresponding to the intersection of the first and second vacuum-air bearing curves is taken to obtain the standard air bearing threshold.

[0081] In the embodiments of this application, the vacuum degree-air pressure curve of the wind turbine system obtained by testing is as follows: Figure 6 As shown, the first vacuum-air pressure curve is the vacuum-air pressure curve obtained by testing the fan system in series, and the second vacuum-air pressure curve is the vacuum-air pressure curve obtained by testing the fan system in parallel.

[0082] like Figure 6 As shown, switching between series and parallel operation at the intersection of the vacuum degree-air tile curves of the series-parallel connection of the fan system can change the performance of the fan system and the overall cleaning rate. Therefore, the technical solution of this application can use the air tile corresponding to the intersection of the vacuum degree-air tile curves of the series-parallel connection of the fan system as the standard air tile threshold, and then compare the measured actual air tile with the standard air tile threshold.

[0083] In this embodiment, the air vent can determine whether the current working environment of the cleaner is a high-resistance system or a low-resistance system. A fan system can be connected in series in a high-resistance system and in parallel in a low-resistance system. In a high-resistance system, connecting the fan systems in series generates additional static pressure while maintaining low power operation for each fan. This increased static pressure enhances suction, causing dust to be drawn into the dustbin, thus improving the cleaning efficiency. Similarly, connecting two fans in parallel in a low-resistance system generates additional airflow, which also increases airflow and causes dust to be drawn into the dustbin, further improving the cleaning efficiency. Therefore, this effectively improves the cleaning efficiency while maintaining low power and low noise levels for the entire cleaner, solving the technical problem that a single fan requires excessively high input power to improve cleaning efficiency, leading to excessive noise.

[0084] In practical applications, it was further discovered that while switching the operating state of the fan system at the first air tile threshold causes some changes in performance and cleaning rate, the changes are minor. Therefore, in another embodiment of this application, to further improve the effects of low power, low noise, and high cleaning rate, the technical solution of this application proposes a scheme to switch the operating state of the fan system in advance, thereby allowing the fan system to operate under high air volume conditions. Specifically, the method further includes:

[0085] Step 1: Determine the actual air bearing of the fan system using profile parameters, inner static pressure, and outer static pressure.

[0086] Step 2: Compare the actual air tile with the second air tile threshold. The second air tile threshold is the difference between the standard air tile threshold and the air tile correction amount. The air tile correction amount is obtained by multiplying the standard air tile threshold by the second weight parameter, which is a real number ranging from 0 to 0.5.

[0087] In this embodiment of the application, the second weight parameter can be set according to actual needs in practical applications, and preferably set to 0.2.

[0088] In this embodiment of the application, switching the operating state of the wind turbine system in advance means reducing the judgment threshold.

[0089] Step 3: When the actual air resistance is less than or equal to the second air resistance threshold, the resistance range of the current working environment of the cleaner is determined as the fourth high resistance system range. Based on the fourth high resistance system range, the second optimal operating state of the fan system is matched as the series state. When the actual air resistance is greater than the second air resistance threshold, the resistance range of the current working environment of the cleaner is determined as the fourth low resistance system range. Based on the fourth low resistance system range, the second optimal operating state of the fan system is matched as the parallel state.

[0090] In the technical solution provided in step S208, when the first operating state and the second operating state are inconsistent, controlling the wind turbine system to switch from the first operating state to the second operating state includes: sending a first switching command to the state switching actuator to switch the wind turbine system from the first operating state to the second operating state through the state switching actuator.

[0091] In this embodiment, to accommodate the aforementioned series and parallel connection configuration of the fan system, a corresponding state switching actuator can be installed in the cleaner to switch the fan system between series and parallel states. The state switching actuator may include a moving slot and a driving component. The fan is positioned in the moving slot, and when a state switch is required, the driving component drives the fan to move within the moving slot according to the desired state.

[0092] Optionally, the method further includes: detecting the operating status of the fan system before the cleaner stops operating; if the operating status is in parallel, sending a second switching command to the state switching actuator to switch the fan system from parallel to series, so that the cleaner will start in series with the fan system the next time it starts.

[0093] In this embodiment of the application, the study also found that the noise is relatively lower when the fan system is in series. Therefore, in order to ensure the user experience, the fan system in series can be set as the default start state of the cleaner. This requires ensuring that the fan system is switched to series state before stopping the cleaner each time it stops running.

[0094] The technical solution of this application adopts a fan system with at least two fans. The fan system is set in series or parallel in different scenarios, which effectively improves the cleaning rate while keeping the overall cleaner low power and low noise. It solves the technical problem that a single fan needs too much input power to improve cleaning efficiency, and that excessive power leads to excessive noise.

[0095] According to another aspect of the embodiments of this application, such as Figure 7 As shown, this application provides a cleaner, comprising:

[0096] The fan system 701 includes at least two fans. The fan system can operate in series or in parallel. When the fan system is in series, the fans are connected in series in sequence. When the fan system is in parallel, the fans are connected in parallel with each other.

[0097] The status detection sensor 703 is used to detect the current first operating state of the wind turbine system, wherein the first operating state is one of series state and parallel state;

[0098] Pressure sensor 705 is used to acquire the internal and external static pressures at the dust box inlet of the cleaner;

[0099] The processor 707 is used to determine the resistance range of the current working environment of the cleaner based on the contour parameters of the dust box inlet, the inner static pressure and the outer static pressure, and to determine the actual optimal second operating state of the fan system in the resistance range, and to issue a switching command when the first operating state and the second operating state are inconsistent, wherein the second operating state is the other of the series state and the parallel state.

[0100] The state switching actuator 709 is used to switch the wind turbine system from the first operating state to the second operating state according to the switching command.

[0101] The status detection sensors, pressure sensors, processor, and status switching actuators in the aforementioned cleaner communicate via a communication bus and communication interface. The communication bus can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. This communication bus can be divided into an address bus, a data bus, and a control bus, etc.

[0102] The processors mentioned above can be general-purpose processors, including central processing units (CPUs), network processors (NPs), etc.; they can also be digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0103] It is understood that the embodiments described herein can be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions described herein, or combinations thereof.

[0104] For software implementation, the techniques described herein can be implemented by units that perform the functions described herein. The software code can be stored in memory and executed by a processor. The memory can be implemented in the processor or external to the processor.

[0105] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0106] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0107] In the embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of modules is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple modules or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0108] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0109] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0110] If the aforementioned function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiments of this application, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks. It should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In the absence of further restrictions, an element defined by the phrase "comprising a..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0111] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A cleaner control method, characterized in that, include: The first operating state of the fan system is detected, wherein the fan system includes at least two fans, and the operating state of the fan system has a series state and a parallel state. When the fan system is in the series state, the fans are connected in series in sequence. When the fan system is in the parallel state, the fans are connected in parallel with each other. The first operating state is one of the series state and the parallel state. Obtain the internal and external static pressures at the dustbin inlet of the cleaner; Based on the contour parameters of the dust box inlet, the inner static pressure, and the outer static pressure, the resistance range of the current working environment of the cleaner is determined, and the second operating state of the fan system in the actual optimal range is determined. When the cleaner is determined to be in a high resistance system range, the second operating state matching the high resistance system range is determined to be the series state. When the cleaner is determined to be in a low resistance system range, the second operating state matching the low resistance system range is determined to be the parallel state. If the first operating state and the second operating state are inconsistent, the wind turbine system is controlled to switch from the first operating state to the second operating state. At this time, the second operating state is the other of the series state and the parallel state.

2. The method according to claim 1, characterized in that, Based on the contour parameters of the dust box inlet, the inner static pressure, and the outer static pressure, the resistance range of the current working environment of the cleaner is determined, and the actual optimal second operating state of the fan system within the resistance range is determined, including: The actual air volume flowing through the fan system is determined using the contour parameters, the inner static pressure, and the outer static pressure. The actual air volume is compared with a first air volume threshold, wherein the first air volume threshold is a standard air volume threshold. When the actual air volume is less than or equal to the first air volume threshold, the resistance range of the current working environment where the cleaner is located is determined as the first high resistance system range, and the second operating state of the fan system is matched to the first high resistance system range as the series state. When the actual air volume is greater than the first air volume threshold, the resistance range of the current working environment where the cleaner is located is determined as the first low resistance system range, and the second operating state of the fan system, which is actually the best, is matched based on the first low resistance system range as the parallel state.

3. The method according to claim 1, characterized in that, Determining the resistance range of the current working environment of the cleaner based on the contour parameters of the dust box inlet, the inner static pressure, and the outer static pressure, and determining the actual optimal second operating state of the fan system within the resistance range, further includes: The actual air volume flowing through the fan system is determined using the contour parameters, the inner static pressure, and the outer static pressure. The actual air volume is compared with the second air volume threshold, wherein the second air volume threshold is the difference between the standard air volume threshold and the air volume correction amount, and the air volume correction amount is obtained by multiplying the standard air volume threshold by the first weight parameter, wherein the first weight parameter is a real number with a value range of 0 to 0.

5. When the actual air volume is less than or equal to the second air volume threshold, the resistance range of the current working environment where the cleaner is located is determined as the second high resistance system range, and the second optimal operating state of the fan system is matched based on the second high resistance system range as the series state. When the actual air volume is greater than the second air volume threshold, the resistance range of the current working environment where the cleaner is located is determined as the second low resistance system range, and the second optimal operating state of the fan system is matched based on the second low resistance system range as the parallel state.

4. The method according to any one of claims 2 or 3, characterized in that, The method further includes pre-determining the standard airflow threshold in the following manner: Vacuum-airflow test was performed on the fan system in both the series and parallel configurations. Determine the first vacuum-airflow curve obtained by testing the fan system in the series state and the second vacuum-airflow curve obtained by testing the fan system in the parallel state; The standard airflow threshold is obtained by taking the airflow corresponding to the intersection of the first vacuum degree-airflow curve and the second vacuum degree-airflow curve.

5. The method according to claim 1, characterized in that, Determining the resistance range of the current working environment of the cleaner based on the contour parameters of the dust box inlet, the inner static pressure, and the outer static pressure, and determining the actual optimal second operating state of the fan system within the resistance range, further includes: The actual air bearing of the fan system is determined using the profile parameters, the inner static pressure, and the outer static pressure. The actual air tile is compared with the first air tile threshold, wherein the first air tile threshold is the standard air tile threshold; When the actual air resistance is less than or equal to the first air resistance threshold, the resistance range of the current working environment of the cleaner is determined as the third high resistance system range, and the second operating state of the fan system is matched to the third high resistance system range as the series state. When the actual air resistance is greater than the first air resistance threshold, the resistance range of the current working environment of the cleaner is determined as the third low resistance system range, and the second operating state of the fan system is matched to the third low resistance system range as the parallel state.

6. The method according to claim 1, characterized in that, Determining the resistance range of the current working environment of the cleaner based on the contour parameters of the dust box inlet, the inner static pressure, and the outer static pressure, and determining the actual optimal second operating state of the fan system within the resistance range, further includes: The actual air bearing of the fan system is determined using the profile parameters, the inner static pressure, and the outer static pressure. The actual air tile is compared with the second air tile threshold, wherein the second air tile threshold is the difference between the standard air tile threshold and the air tile correction amount, and the air tile correction amount is obtained by multiplying the standard air tile threshold by a second weighting parameter, wherein the second weighting parameter is a real number with a value range of 0 to 0.5; When the actual air resistance is less than or equal to the second air resistance threshold, the resistance range of the current working environment of the cleaner is determined as the fourth high resistance system range, and the second optimal operating state of the fan system is matched to the fourth high resistance system range as the series state. When the actual air resistance is greater than the second air resistance threshold, the resistance range of the current working environment of the cleaner is determined as the fourth low resistance system range, and the second operating state of the fan system is matched to the fourth low resistance system range as the parallel state.

7. The method according to any one of claims 5 or 6, characterized in that, The method further includes pre-determining the standard air tile threshold in the following manner: The vacuum-air-watt test was performed on the fan system in both the series and parallel configurations. Determine the first vacuum-air-gas curve obtained by testing the fan system in the series state and the second vacuum-air-gas curve obtained by testing the fan system in the parallel state; The standard air tile threshold is obtained by taking the air tile corresponding to the intersection of the first vacuum degree-air tile curve and the second vacuum degree-air tile curve.

8. The method according to claim 1, characterized in that, When the first operating state and the second operating state are inconsistent, controlling the wind turbine system to switch from the first operating state to the second operating state includes: A first switching command is sent to the state switching actuator to switch the wind turbine system from the first operating state to the second operating state through the state switching actuator.

9. The method according to claim 1, characterized in that, The method further includes: The operating status of the fan system is detected before the cleaner stops operating; When the operating state is the parallel state, a second switching command is sent to the state switching actuator to switch the fan system from the parallel state to the series state through the state switching actuator, so that the cleaner will start in the series state the next time it is started.

10. A cleaner, characterized in that, include: A fan system includes at least two fans. The fan system can operate in a series connection state and a parallel connection state. When the fan system is in a series connection state, the fans are connected in series in sequence. When the fan system is in a parallel connection state, the fans are connected in parallel with each other. A status detection sensor is used to detect the current first operating state of the wind turbine system, wherein the first operating state is one of the series state and the parallel state; Pressure sensors are used to acquire the internal and external static pressures at the dustbin inlet of the cleaner; The processor is configured to determine the resistance range of the current working environment of the cleaner based on the contour parameters of the dust box inlet, the inner static pressure and the outer static pressure, and to determine the second operating state of the fan system in the actual optimal operating state in the resistance range, and to issue a switching command when the first operating state and the second operating state are inconsistent, wherein the second operating state is the other of the series state and the parallel state; A state switching actuator is used to switch the wind turbine system from the first operating state to the second operating state according to the switching command.

Images