Dust collector control method and dust collector

Abstract

The invention discloses a control method of a dust collector and the dust collector, the dust collector comprises a fan, a water pump, a water level sensor and a controller, and the fan, the water pump and the water level sensor are all electrically connected with the controller; the control method of the dust collector comprises the steps that after the dust collector is started, the water level sensor detects the water level and feeds back the water level state to the controller, and when the water level reaches a certain height, the water pump is started; after the fan continuously operates for preset time, the water level sensor detects whether the water level reduction value reaches a preset value range or not; if the water level reduction value does not reach the preset value range, the fan power is reduced or the fan is shut down; and after a plurality of seconds, when the water level sensor detects that the water level is low, the power of the fan is adjusted to be the power for starting up or the fan is started up again. The method has the beneficial effects that the mode of discharging while sucking is achieved, the power of the draught fan can be adjusted in a self-adaptive mode according to the water level state, and the method has the advantages of being safe, intelligent, energy-saving and the like.

Description

Technical Field

[0001] This application relates to the field of cleaning equipment technology, and in particular to a control method for a vacuum cleaner and a vacuum cleaner. Background Technology

[0002] Vacuum cleaners, as a common cleaning device, primarily use an internal fan to generate high-speed airflow, creating negative pressure within the dust collection tank. This negative pressure then generates suction to collect dust and debris from the outside environment. Most existing vacuum cleaners are dry-type designs and cannot operate underwater. Collecting debris from water requires a separate specialized vacuum cleaner. Traditional vacuum cleaners require manual drainage, which is complex, time-consuming, and labor-intensive. Currently, both vacuum cleaners and vacuum cleaners are mostly powered directly by a power cord, limiting their cleaning range to the length of the cord; they cannot be used in areas without electrical outlets, such as basements and yards.

[0003] Currently, the control methods for vacuum cleaners with suction functions are relatively simple. They typically control the vacuum cleaner's power by setting different speed levels. During operation, the fan and water pump cannot work in tandem, making it difficult to adjust the fan power based on the amount of water suctioned. This results in high power consumption and compromised safety. Therefore, there is an urgent need for a vacuum cleaner that is both safe and energy-efficient. Summary of the Invention

[0004] One objective of this application is to provide a control method for a vacuum cleaner that can solve at least one of the defects in the aforementioned background art.

[0005] To achieve at least one of the above objectives, the technical solution adopted in this application is as follows: a control method for a vacuum cleaner, the vacuum cleaner including a fan, a water pump, a water level sensor, and a controller, wherein the fan, the water pump, and the water level sensor are all electrically connected to the controller, characterized in that it further includes a battery compartment, and the controller is electrically connected to a battery in the battery compartment, the vacuum cleaner including the following control method: When the vacuum cleaner is turned on, the water level sensor detects the water level and feeds the water level status back to the controller. When the water level reaches a certain height, the water pump starts and pumps the water out of the vacuum cleaner. After the fan has been running for a preset time, the water level sensor checks whether the water level drop has reached a predetermined range. If the water level drop has not reached the predetermined range, the fan power is reduced or the fan is turned off. After several seconds, when the water level sensor detects a low water level, the fan power is adjusted back to the power it was at when the vacuum cleaner was turned on or the vacuum cleaner is turned on again.

[0006] Preferably, when the vacuum cleaner is running, if a rise in water level is detected, the fan power is reduced or the fan is turned off.

[0007] Preferably, the water level sensor is an electronic water level sensor, which is used to set the water level status as upper water level and lower water level. When the electronic water level sensor detects that the water level has reached the upper water level, the controller executes the water pump start-up procedure; when the electronic water level sensor detects that the water level has not reached the lower water level, the controller executes the water pump shutdown procedure.

[0008] Preferably, the water level sensor is a mechanical water level sensor, and there are two mechanical water level sensors. The two mechanical water level sensors are respectively installed on the upper and lower parts of the vacuum cleaner. The upper mechanical water level sensor is used to detect the upper water level, and the lower mechanical water level sensor is used to detect the lower water level. When the upper mechanical water level sensor is triggered by water, the controller executes the water pump start-up procedure; when the lower mechanical water level sensor is not triggered by water, the controller executes the water pump shut-off procedure.

[0009] Preferably, the vacuum cleaner further includes a speed detection module for detecting the fan speed, the speed detection module feeding back the detection result to the controller; the fan speed is set with a first threshold and a second threshold, and the first threshold is greater than the second threshold; when the speed detection module detects that the fan speed is greater than the first threshold and lasts for 0 to 100 seconds, the controller executes a fan power adjustment program to reduce the fan power; when the speed detection module detects that the fan speed is less than the second threshold and lasts for 0 to 100 seconds, the controller executes a fan power adjustment program to adjust the fan power to the maximum power.

[0010] Preferably, when the fan starts, if the speed detection module detects that the fan speed is greater than the first threshold for 0 to 100 seconds, and the water pump is in the on state, the controller executes the fan shutdown procedure.

[0011] Preferably, when the blower starts, if the water level sensor detects that the water level has reached the upper water level, the controller executes the water pump start-up procedure; after the water pump starts, if the water level sensor detects that the water level has reached the upper water level and this continues for 0 to 60 seconds, the controller executes the blower shutdown procedure; if the water level sensor detects that the water level has not reached the lower water level, the controller executes the water pump shutdown and blower start-up procedure.

[0012] Preferably, it also includes a temperature detection module, which stops the fan and issues an alarm when the fan temperature is too high or when the water level sensor detects that the water level has reached the upper water level.

[0013] Another object of this application is to provide a vacuum cleaner that can solve at least one of the defects in the above-mentioned background art.

[0014] To achieve at least one of the above objectives, the technical solution adopted in this application is as follows: a vacuum cleaner, comprising a sludge collection tank and an airflow generating assembly, wherein the vacuum cleaner is controlled using the aforementioned vacuum cleaner control method, the airflow generating assembly comprising a mounting plate and a fan, the fan being mounted on the mounting plate, at least one water level switch for detecting water level being installed inside the sludge collection tank, the water level switch being signal-connected to the controller; the air outlet end of the fan being equipped with an air outlet connector communicating with the outside, the air inlet end of the fan communicating with the interior of the sludge collection tank, and the mounting plate also being equipped with a suction connector communicating with the interior of the sludge collection tank; a water pump being installed inside the sludge collection tank, and a water outlet connector communicating with the outside being installed on the water pump.

[0015] With the above settings, the vacuum cleaner can simultaneously perform both vacuuming and wastewater suction functions, thereby expanding the applicability of this device. When the fan rotates, a negative pressure environment is created in the wastewater collection tank, allowing external dust or wastewater to be sucked into the tank for storage through the suction connector. When there is a lot of wastewater in the collection tank, the water pump starts and discharges the wastewater to the outside through the outlet connector, achieving simultaneous suction and discharge to avoid the user having to manually empty the wastewater. The water level switch can feed back the water level status of the collection tank to the controller, which then controls the start and stop of the water pump.

[0016] Preferably, the water level switch includes two water level sensors. The mounting plate has a mounting tube extending into the sludge collection tank, with the two water level sensors installed at the upper and lower parts of the mounting tube, respectively. This configuration allows the water level sensors to be installed inside the sludge collection tank via the mounting tubes. The water level sensors are categorized as upper and lower sensors based on their position, and the two sensors can provide real-time feedback of the water level status to the controller.

[0017] Preferably, a first check valve is installed at the air inlet of the blower, and a second check valve is installed in the water outlet connector; a blowing valve is slidably installed in the air outlet connector, and the blowing valve blocks / unclogs the air outlet connector by its own movement. With this configuration, the first check valve prevents dust from the sludge collection tank from entering the blower, and the second check valve prevents water from flowing back into the water pump from the water outlet connector, further improving the safety of the vacuum cleaner.

[0018] Preferably, a buoy assembly is installed inside the sludge collection tank. The buoy assembly includes a buoy frame and a float. The opening of the buoy frame is connected to the air inlet of the blower. The float is slidably mounted on the buoy frame. The buoy frame has multiple perforations, and the float is used to block the air inlet of the blower. This configuration allows for dry and wet separation of the vacuum cleaner through the buoy assembly. When the water level in the sludge collection tank reaches the position of the buoy frame, wastewater enters the buoy frame through the perforations. As the water level rises, the float moves upward. When the float reaches its highest point, it blocks the air inlet of the blower, preventing wastewater from the sludge collection tank from entering the blower.

[0019] Compared with the prior art, the beneficial effects of this application are as follows: (1) The vacuum cleaner can perform vacuuming and sewage suction at the same time, which broadens the applicable scenarios of the vacuum cleaner. In addition, the present invention also has an automatic sewage discharge function. When there is a lot of sewage in the sewage collection tank, the water pump can be automatically turned on to discharge the sewage in the sewage collection tank to the outside through the water outlet, avoiding the user from manually pouring out the sewage, realizing the working mode of vacuuming and discharging at the same time, thereby improving the working continuity of the vacuum cleaner.

[0020] (2) The water level sensor can feed back the water level status in the sludge collection tank to the controller in real time, and then the controller can control the start and stop of the water pump and the blower, thus realizing the automatic control of the water pump and the blower.

[0021] (3) The fan and water pump can be linked by a water level sensor. The fan speed can be detected to automatically determine the water suction of the vacuum cleaner and adjust the power of the fan to balance the power and electricity consumption of the vacuum cleaner. In addition, the fan can be automatically turned off according to the operating status of the fan and the water pump can enter the self-suction state, thereby increasing the battery's endurance. Attached Figure Description

[0022] Figure 1 The control method flow of the vacuum cleaner in this application Figure 1 .

[0023] Figure 2 The control method flow of the vacuum cleaner in this application Figure 2 .

[0024] Figure 3 The control method flow of the vacuum cleaner in this application Figure 3 .

[0025] Figure 4 The control method flow of the vacuum cleaner in this application Figure 4 .

[0026] Figure 5 The control method flow of the vacuum cleaner in this application Figure 5 .

[0027] Figure 6 This is a schematic diagram of the overall structure of the vacuum cleaner in this application.

[0028] Figure 7 This is a partial structural diagram of the vacuum cleaner in this application.

[0029] Figure 8 This is a schematic diagram of the installation structure of the first check valve and the second check valve in this application.

[0030] Figure 9 This is a cross-sectional structural diagram of the vacuum cleaner in this application.

[0031] Figure 10 This is a schematic diagram of the buoy assembly in this application.

[0032] Figure 11 This is a schematic diagram showing the fit between the air blowing valve and the air outlet connector in this application.

[0033] In the diagram: 1. Sludge collection tank; 100. Air outlet connector; 101. Air blowing valve; 2. Cover; 21. Controller; 22. Battery compartment; 200. Suction connector; 3. Mounting plate; 31. Mounting pipe; 300. Water outlet connector; 301. Second check valve; 4. Fan; 41. First check valve; 400. Water pump; 5. Buoy assembly; 51. Buoy frame; 52. Float; 500. Filter mechanism; 510. Perforation. Detailed Implementation

[0034] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0035] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying 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. They should not be construed as limiting the specific protection scope of this application.

[0036] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0037] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0038] One aspect of this application provides a method for controlling a vacuum cleaner, one preferred embodiment of which is, for example... Figure 1 , Figure 6 and Figure 7 As shown, the vacuum cleaner includes a fan 4, a water pump 400, a water level sensor, and a controller 21. The fan 4, water pump 400, and water level sensor are all electrically connected to the controller 21 to ensure that the controller 21 can control the fan 4 and water pump 400 based on the status of the water level sensor. The vacuum cleaner also includes a battery compartment 22, and the controller 21 is electrically connected to the battery in the battery compartment 22. The vacuum cleaner includes the following control methods.

[0039] When the vacuum cleaner is turned on, the water level sensor activates simultaneously to detect the water level inside the vacuum cleaner and feeds the water level status back to the controller 21. This allows the controller 21 to adjust the operating status of the fan 4 and water pump 400 based on the water level. Specifically, when the water level reaches a certain height, the water pump 400 starts and pumps water out of the vacuum cleaner to ensure that the power of the fan 4 is not affected by the water. After the fan 4 has been running continuously for a preset time, the water level sensor checks whether the water level drop has reached a predetermined range. If the water level sensor detects that the water level drop has not reached the predetermined range, the controller 21 controls the fan 4 to reduce its power or directly shuts down the fan 4 to prevent overheating due to excessively high water levels, thereby improving the safety and lifespan of the fan 4. After several seconds, when the water level sensor detects a low water level, the controller 21 controls the fan 4 to adjust its power back to the initial power or restarts the fan 4.

[0040] It should be noted that the preset time, the predetermined range of water level drop, and other parameters in this application can be adjusted according to actual needs. The predetermined value of water level drop is the decrease in water level per unit time.

[0041] Furthermore, such as Figure 1 As shown, when the vacuum cleaner is running, if a rise in water level is detected, the power of fan 4 will be reduced or fan 4 will be turned off. A rise in water level indicates that the amount of water sucked in is greater than the amount of water discharged. Reducing the power of fan 4 or turning off fan 4 can reduce the amount of water sucked in, ensuring that water does not overflow into the fan 4 and cause damage to it.

[0042] It should be noted that most vacuum cleaners in the current technology are dry-type designs, which may cause a short circuit in the motor if sewage is sucked in during use; while sludge vacuum cleaners can only work underwater and cannot clean ground or land garbage, and have requirements on water depth; users often need to prepare both a vacuum cleaner and a sludge vacuum cleaner when doing cleaning work.

[0043] The vacuum cleaner in this application has both vacuuming and wastewater suction functions, enabling it to perform multiple functions in one machine and saving space and costs. In addition, this control method can adjust the power of the fan 4 in real time according to the water level inside the vacuum cleaner. When the water level is high, the power of the fan 4 is reduced; when the water level is low, the power of the fan 4 is increased. The control of the fan 4 is automatically controlled by the water level sensor and the controller 21, which allows the vacuum cleaner to operate automatically and stably without user intervention.

[0044] In this embodiment, the selection of the water level sensor includes, but is not limited to, the following two types.

[0045] The first type: such as Figure 2 As shown, the water level sensor is an electronic water level sensor. The electronic water level sensor is used to set the water level in the vacuum cleaner to an upper water level and a lower water level. When the electronic water level sensor detects that the water level has reached the upper water level, the controller 21 executes the water pump 400 start program to pump the water out of the vacuum cleaner. When the electronic water level sensor detects that the water level has not reached the lower water level, the controller 21 executes the water pump 400 shut-off program to save the energy consumption of the vacuum cleaner.

[0046] The second type: such as Figure 3 As shown, the water level sensors are mechanical water level sensors, and there are two of them. The two mechanical water level sensors are installed at the top and bottom of the vacuum cleaner, respectively. The upper mechanical water level sensor detects the upper water level, and the lower mechanical water level sensor detects the lower water level. When the upper mechanical water level sensor is triggered by water, the controller 21 executes the water pump 400 start-up program to pump water out of the vacuum cleaner; when the lower mechanical water level sensor is not triggered by water, the controller 21 executes the water pump 400 shut-off program to reduce the vacuum cleaner's energy consumption.

[0047] It is understood that both of the above-mentioned water level sensors can meet the requirements of this application, and those skilled in the art can choose according to actual needs; in addition, the upper water level and lower water level mentioned in this application refer to the height of the liquid level in the vacuum cleaner, and the liquid level height represented by the upper water level and lower water level can be adjusted according to actual conditions.

[0048] In this embodiment, as Figure 4As shown, the vacuum cleaner also includes a speed detection module for detecting the rotational speed of the fan 4. This module can detect the rotational speed of the fan 4 in real time and feed the result back to the controller 21. The rotational speed of the fan 4 is set with a first threshold and a second threshold, where the first threshold is greater than the second threshold. When the speed detection module detects that the rotational speed of the fan 4 is greater than the first threshold and remains so for 0 to 100 seconds, the controller 21 executes the fan 4 power adjustment program again to further reduce the power of the fan 4. This avoids excessive heat generation from the fan 4, improving machine safety, and also reduces energy consumption and user operating costs.

[0049] Furthermore, such as Figure 4 As shown, when the speed detection module detects that the speed of the fan 4 is less than the second threshold and continues for 0 to 100 seconds, the controller 21 executes the fan 4 power adjustment program to adjust the power of the fan 4 to the maximum power to ensure that the fan 4 can generate sufficient negative pressure in the sludge collection box 1.

[0050] It should be noted that the fan 4 in this application is driven by a brushless motor, which is a constant power motor with a normal operating speed of 50,000 r / min to 100,000 r / min. When the load on the fan 4 is very light, the fan 4 generates a lot of heat, so heat dissipation can be achieved by reducing the power of the fan 4. When the load becomes heavy, the fan 4 is restored to its maximum power to ensure that a large negative pressure can be formed in the sludge collection box 1. The specific values ​​of the first threshold and the second threshold are not specifically limited in this application, and those skilled in the art can set them according to actual needs and the maximum speed of the fan 4.

[0051] In this embodiment, when the speed detection module detects that the speed of the fan 4 is greater than 100,000 r / min to 200,000 r / min and remains at this speed for 0 to 100 seconds, if the controller 21 detects that the water pump 400 is on, the controller 21 executes the fan 4 shutdown procedure. At this time, the vacuum cleaner is in a pure vacuuming mode. When the water pump 400 is on, it has a self-priming function, which can achieve simultaneous vacuuming and emptying without relying on the fan 4, thereby reducing the machine's energy consumption.

[0052] Furthermore, when the fan 4 is in the off state, if the water level sensor detects that the water level has not reached the lower water level, the controller 21 executes the water pump 400 shutdown and fan 4 startup procedure.

[0053] In this embodiment, as Figure 5As shown, when the blower 4 starts, if the water level sensor detects that the water level has reached the upper water level, the controller 21 executes the water pump 400 start-up procedure and discharges the sewage in the sludge collection tank 1 to the outside. After the water pump 400 starts, if the water level sensor detects that the water level has reached the upper water level and remains there for 0 to 60 seconds, the controller 21 executes the blower 4 shutdown procedure to prevent the sewage in the sludge collection tank 1 from entering the blower 4 and damaging it.

[0054] It should be noted that this control method can select between immediate control and delayed control according to actual needs. When the response time of the controller 21 in the above embodiment is 0 seconds, it is immediate control. When the response time of the controller 21 in the above embodiment is greater than 0 seconds, it is delayed control. Those skilled in the art can select according to actual needs.

[0055] In this embodiment, the controller 21 is equipped with buttons and indicator lights. The buttons are used to control the start / stop of the vacuum cleaner, and the indicator lights are used to display the operating level of the fan 4. A short press of the button starts the fan 4, the indicator light illuminates, and the fan 4 operates at a low level by default. A long press of the button for 1 second switches the fan 4 to other operating levels. The fan 4's operating level is related to its operating power; the higher the fan 4's operating level, the higher its operating power.

[0056] It should be noted that the display method of the indicator light can be set by those skilled in the art according to actual needs. Here is an example: the indicator light is green, and the brightness of the indicator light is proportional to the power of the fan 4. The indicator light is brightest when the fan 4 is at its highest setting, and dimmest when the fan 4 is at its lowest setting. When the fan 4 is forcibly stopped, the indicator light turns red.

[0057] In this embodiment, a temperature detection module for detecting the temperature of the fan 4 is also included. The controller 21 is equipped with both a vacuuming mode button and a sludge suction mode button, allowing the user to select different modes according to their needs. When the user presses the vacuuming mode button, the fan 4 operates at a low speed by default, and the vacuuming mode indicator light illuminates. During the operation of the fan 4, the temperature detection module and water level sensor monitor the temperature in real time. If the temperature of the fan 4 is too high, or if the water level sensor detects that the water level has reached the upper limit, the fan 4 stops operating and an alarm is triggered. When the user presses the sludge suction mode button, the fan 4 operates at the highest speed by default, and the controller 21 determines whether to start the water pump 400 based on feedback information from the water level sensor.

[0058] Another aspect of this application provides a vacuum cleaner, one preferred embodiment of which is, for example... Figure 6 , Figure 7 , Figure 8 and Figure 9As shown, the system includes a sludge collection tank 1 and an airflow generating assembly. The airflow generating assembly includes a mounting plate 3 and a blower 4. The blower 4 has an air outlet connector 100 connected to the outside. When it is necessary to clean up external garbage, an air blowing pipe can be installed in the air outlet connector 100. The rotation of the blower 4 creates a high-speed airflow in the air blowing pipe to blow up the external garbage, making subsequent garbage collection more convenient. The air inlet of the blower 4 is connected to the inside of the sludge collection tank 1. The mounting plate 3 is also equipped with a suction connector 200. One end of the suction connector 200 is connected to the inside of the sludge collection tank 1, and the other end is connected to the outside. When the blower 4 rotates, a negative pressure environment is created inside the sludge collection tank 1. Dust or sewage from the outside can be sucked into the sludge collection tank 1 for storage through the suction connector 200.

[0059] It should be noted that in practical applications, the mounting plate 3 can be placed horizontally or vertically. As long as it can separate the blower 4 from the water in the sludge collection box 1, it can meet the requirements of this application. The positions of the suction connector 200 and the blower 4 can also be adjusted according to actual needs, as long as the air inlet of the suction connector 200 and the air inlet of the blower 4 can be connected to the inside of the sludge collection box 1.

[0060] Specifically, such as Figure 7 and Figure 9 As shown, a water pump 400 is installed inside the sludge collection tank 1. The water pump 400 has a water outlet connector 300 that connects to the outside. When there is a large amount of sewage in the sludge collection tank 1, the water pump 400 starts and discharges the sewage directly to the outside through the water outlet connector 300. This ensures that the vacuum cleaner has both vacuuming and sewage suction functions, thereby expanding the applicability of the device. In practical applications, a water pipe can be connected to the water outlet connector 300, and the end of the pipe can be placed in the sewer to achieve simultaneous suction and discharge, avoiding the need for the user to manually empty the sewage.

[0061] As a supplement, such as Figure 7 and Figure 9 As shown, a filter mechanism 500 connected to the suction connector 200 is also installed inside the sludge collection tank 1. Dust or sewage in the suction connector 200 will first be filtered by the filter mechanism 500 before entering the sludge collection tank 1 for storage. The filter mechanism 500 can isolate larger particles in the dust or sewage within the filter mechanism 500, thereby preventing large particles from entering the sludge collection tank 1 and affecting the operation of the water pump 400 and the blower 4. The specific specifications and model of the filter mechanism 500 are not limited; it can be a filter screen or a filter, as long as it can prevent large particles from entering the sludge collection tank 1, it can meet the requirements of this application.

[0062] Furthermore, such as Figure 6 and Figure 7As shown, it also includes a controller 21 and a battery compartment 22. The battery in the battery compartment 22 is used to power the fan 4 and the water pump 400. The controller 21 is electrically connected to both the fan 4 and the water pump 400, and can control the start / stop of the fan 4 and the water pump 400. At least one water level switch for detecting the water level is installed in the sludge collection tank 1. The water level switch is connected to the controller 21 and feeds back the water level status in the sludge collection tank 1 to the controller 21 in real time, and then the controller 21 controls the start / stop of the water pump 400 or the fan 4. A cover 2 is also installed on the sludge collection tank 1 to protect the sludge collection tank 1; the controller 21 is installed on the sludge collection tank 1, or the controller 21 is installed on the cover 2.

[0063] In addition, the battery in the battery compartment 22 of this application is removable, so the vacuum cleaner does not require an external power cord when it is working, which can further improve the working locations that this device can adapt to. When the battery in the battery compartment 22 is depleted, the vacuum cleaner can be maintained for normal operation by replacing it with a new battery; the controller 21 can realize the linkage between the fan 4 and the water pump 400, making the operation of the vacuum cleaner more intelligent.

[0064] In this embodiment, as Figure 7 As shown, the water level switch includes two water level sensors. A mounting plate 3 has a mounting tube 31 for extending into the sludge collection tank 1. The two water level sensors are respectively installed at the upper and lower parts of the mounting tube 31. The two water level sensors are classified as an upper water level sensor and a lower water level sensor based on their position. When there is water in the sludge collection tank 1, the water level can be determined by the upper and lower water level sensors. Those skilled in the art can adjust the number and placement of the water level sensors according to actual needs, but it must be ensured that the water level sensors can detect both the highest and lowest water levels.

[0065] It should be noted that, in addition to water level sensors, water level switches can also be waterproof float switches, capacitive switches, optical switches, etc., as long as they can provide real-time feedback of the water level status in the sludge collection tank 1 to the controller 21, they can meet the requirements of this application.

[0066] In this embodiment, as Figure 7 and Figure 8 As shown, a first check valve 41 is installed at the air inlet of the blower 4, and a second check valve 301 is installed inside the water outlet connector 300. The first check valve 41 is used to block the air inlet of the blower 4 to ensure that when the water pump 400 is operating, the first check valve 41 can seal the sludge collection tank 1, thereby generating sufficient negative pressure within the sludge collection tank 1. The second check valve 301 is used to block the water outlet connector 300 to ensure that when the blower 4 is operating, the second check valve 301 can seal the sludge collection tank 1, thereby generating sufficient negative pressure within the sludge collection tank 1.

[0067] Specifically, when the blower 4 is working, the air inlet of the blower 4 opens the first check valve 41 through negative pressure to ensure that the air inlet of the blower 4 is connected to the inside of the sludge collection box 1. When the blower 4 stops working, the first check valve 41 resets under the action of gravity and blocks the air inlet of the blower 4 to prevent airflow and dust from flowing back into the blower 4. The second check valve 301 can block the sewage in the outlet connector 300 when the water pump 400 stops working, preventing sewage or impurities from flowing back and avoiding contamination or blockage of the water pump 400.

[0068] It should be understood that when the diameter of the water pipe connected to the outlet connector 300 becomes smaller or becomes blocked, the water pump 400 may not be able to discharge the sewage in the sludge collection tank 1 in time, which may cause the sewage in the sludge collection tank 1 to break through the blockage of the first check valve 41, enter the blower 4 and damage the blower 4.

[0069] To address the aforementioned problems, in some embodiments of this application, such as Figure 9 and Figure 10 As shown, a buoy assembly 5 is installed inside the sludge collection tank 1. The buoy assembly 5 includes a buoy frame 51 and a float 52. The opening of the buoy frame 51 is aligned with the air inlet of the blower 4, and the float 52 is slidably installed inside the buoy frame 51. The buoy frame 51 has multiple perforations 510 to ensure that sewage in the sludge collection tank 1 can enter the interior of the buoy frame 51 through the perforations 510. The density of the float 52 is less than the density of the sewage to ensure that the float 52 can rise with the water level due to buoyancy. When the water level in the sludge collection tank 1 reaches the position of the buoy frame 51, sewage enters the buoy frame 51 through the perforations 510. As the water level rises, the float 52 moves upward continuously. When the float 52 reaches its highest point, it blocks the air inlet of the blower 4, preventing sewage from the sludge collection tank 1 from entering the blower 4, thus achieving dry and wet separation of the vacuum cleaner.

[0070] Furthermore, such as Figure 11 As shown, an air valve 101 is slidably installed inside the air outlet connector 100. The air valve 101 blocks / unclogs the air outlet connector 100 by its own movement, thereby realizing the conversion between suction and blowing of the vacuum cleaner. When the air valve 101 is open, airflow is sprayed out from the air pipe to clean dust, debris, etc. in the external environment; when the air valve 101 is closed, the air outlet connector 100 is in a blocked state, the fan 4 draws the airflow out of the dust collection box 1 and creates a negative pressure environment in the dust collection box 1, thereby sucking dust, debris, etc. from the outside into the dust collection box 1 through the suction connector 200.

[0071] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A control method for a vacuum cleaner, the vacuum cleaner comprising a fan (4), a water pump (400), a water level sensor, and a controller (21), wherein the fan (4), the water pump (400), and the water level sensor are all electrically connected to the controller (21), characterized in that, It also includes a battery compartment (22), and the controller (21) is electrically connected to the battery in the battery compartment (22). The vacuum cleaner includes the following control methods: When the vacuum cleaner is turned on, the water level sensor detects the water level and feeds back the water level status to the controller (21). When the water level reaches a certain height, the water pump (400) starts and pumps the water out of the vacuum cleaner. After the fan (4) runs continuously for a preset time, the water level sensor detects whether the water level drop value has reached the predetermined value range. If the water level drop value has not reached the predetermined value range, the power of the fan (4) is reduced or the fan (4) is turned off. After several seconds, when the water level sensor detects a low water level, the power of the fan (4) is adjusted to the power when it is turned on or it is turned on again.

2. The control method for a vacuum cleaner as described in claim 1, characterized in that, When the vacuum cleaner is running, if a rise in water level is detected, reduce the power of the fan (4) or turn off the fan (4).

3. The control method for a vacuum cleaner as described in claim 1, characterized in that, The water level sensor is an electronic water level sensor. The electronic water level sensor is used to set the water level status to upper water level and lower water level. When the electronic water level sensor detects that the water level has reached the upper water level, the controller (21) executes the water pump (400) start program; when the electronic water level sensor detects that the water level has not reached the lower water level, the controller (21) executes the water pump (400) shut-off program.

4. The control method for a vacuum cleaner as described in claim 1, characterized in that, The water level sensor is a mechanical water level sensor. There are two mechanical water level sensors. The two mechanical water level sensors are installed on the upper and lower parts of the vacuum cleaner, respectively. The upper mechanical water level sensor is used to detect the upper water level, and the lower mechanical water level sensor is used to detect the lower water level. When the upper mechanical water level sensor is triggered by water, the controller (21) executes the water pump (400) start program. When the lower mechanical water level sensor is not triggered by water, the controller (21) executes the water pump (400) shut-off program.

5. The control method for a vacuum cleaner as described in claim 1, characterized in that, The vacuum cleaner also includes a speed detection module for detecting the speed of the fan (4), and the speed detection module feeds back the detection result to the controller (21); the speed of the fan (4) is set with a first threshold and a second threshold according to its size, and the first threshold is greater than the second threshold; When the speed detection module detects that the speed of the fan (4) is greater than the first threshold and continues for 0 to 100 seconds, the controller (21) executes the fan (4) power adjustment program to reduce the power of the fan (4); when the speed detection module detects that the speed of the fan (4) is less than the second threshold and continues for 0 to 100 seconds, the controller (21) executes the fan (4) power adjustment program to adjust the power of the fan (4) to the maximum power.

6. The control method for a vacuum cleaner as described in claim 5, characterized in that, When the fan (4) is started, if the speed detection module detects that the speed of the fan (4) is greater than the first threshold for 0 to 100 seconds, and the water pump (400) is in the on state, then the controller (21) executes the fan (4) shutdown procedure.

7. The control method for a vacuum cleaner as described in claim 1, characterized in that, When the blower (4) starts, if the water level sensor detects that the water level has reached the upper water level, the controller (21) executes the water pump (400) start procedure; after the water pump (400) starts, if the water level sensor detects that the water level has reached the upper water level and continues for 0 to 60 seconds, the controller (21) executes the blower (4) shut-off procedure; if the water level sensor detects that the water level has not reached the lower water level, the controller (21) executes the water pump (400) shut-off and blower (4) start procedure.

8. The control method for a vacuum cleaner as described in claim 1, characterized in that, It also includes a temperature detection module. When the temperature of the fan (4) is too high, or when the water level sensor detects that the water level has reached the upper water level, the fan (4) will stop running and issue an alarm.

9. A vacuum cleaner, comprising a sludge collection box (1) and an airflow generating assembly, characterized in that, The vacuum cleaner is controlled by the vacuum cleaner control method according to any one of claims 1-6. The airflow generating component includes a mounting plate (3) and a fan (4). The fan (4) is mounted on the mounting plate (3). At least one water level switch for detecting water level is installed in the sludge collection box (1). The water level switch is signal connected to the controller (21). The blower (4) is equipped with an air outlet connector (100) that communicates with the outside. The air inlet of the blower (4) is connected to the inside of the sludge collection box (1). The mounting plate (3) is also equipped with a suction connector (200) that communicates with the inside of the sludge collection box (1). A water pump (400) is installed inside the sludge collection box (1). A water outlet connector (300) that communicates with the outside is installed on the water pump (400).

10. The vacuum cleaner as described in claim 9, characterized in that, The water level switch includes a water level sensor, and there are two water level sensors. The mounting plate (3) is provided with a mounting tube (31) for extending into the sludge collection tank (1). The two water level sensors are respectively installed on the upper and lower parts of the mounting tube (31).

11. The vacuum cleaner as described in claim 9, characterized in that, The air inlet of the blower (4) is equipped with a first check valve (41), and the water outlet connector (300) is equipped with a second check valve (301); the air outlet connector (100) is slidably installed with an air blowing valve (101), and the air blowing valve (101) blocks / unclogs the air outlet connector (100) by moving itself.

12. The vacuum cleaner as described in claim 9, characterized in that, The sludge collection tank (1) is equipped with a buoy assembly (5). The buoy assembly (5) includes a buoy frame (51) and a float (52). The opening of the buoy frame (51) is connected to the air inlet of the blower (4). The float (52) is slidably installed on the buoy frame (51). The buoy frame (51) is provided with multiple perforations (510). The float (52) is used to block the air inlet of the blower (4).

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