Cleaning base station and cleaning system

Abstract

The present disclosure provides a cleaning base station and a cleaning system, and relates to the technical field of smart home. The cleaning base station comprises a base station body, a sewage tank, a suction assembly and a noise reducer. The base station body is provided with a cleaning tank. The sewage tank is arranged on the base station body and is used for recycling sewage in the cleaning tank. The suction assembly has a suction port and an exhaust port. The suction port is connected with the sewage tank to draw negative pressure on the sewage tank. The noise reducer is connected with the exhaust port so that the airflow discharged by the suction assembly passes through the noise reducer, thereby reducing the noise generated when the suction assembly discharges.

Description

Technical Field

[0001] This disclosure relates to the field of smart home technology, and more specifically, to a cleaning base station and a cleaning system. Background Technology

[0002] As society continues to develop and people's living standards improve, cleaning robots are becoming increasingly popular in households because they save time and effort compared to traditional manual cleaning. These cleaning devices, powered by artificial intelligence, can automatically clean floors throughout a room.

[0003] Typically, after completing a cleaning task, the cleaning robot needs to return to the cleaning base station to wash the mop. During the mop washing process, wastewater is generated in the cleaning tank of the cleaning base station, which needs to be pumped into the wastewater tank in a timely manner.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this disclosure is to provide a clean base station and a clean system.

[0006] According to one aspect of this disclosure, a clean base station is provided, the clean base station comprising:

[0007] The base station body is equipped with a cleaning tank.

[0008] A wastewater tank is installed on the base station body and is used to recycle wastewater from the cleaning tank.

[0009] A suction assembly having an air intake port and an exhaust port, wherein the air intake port is connected to the wastewater tank to create negative pressure in the wastewater tank;

[0010] A noise reducer is connected to the exhaust port so that the airflow discharged from the suction assembly passes through the noise reducer.

[0011] In one exemplary embodiment of this disclosure, the base station body includes a base station housing, and the noise reduction device includes a noise reduction housing; a noise reduction cavity is provided inside the noise reduction housing, or the noise reduction housing is connected to the base station housing to form a noise reduction cavity.

[0012] In one exemplary embodiment of this disclosure, the base station body includes a base station housing, the base station housing is provided with an exhaust port, and the exhaust port of the noise reduction device is connected to the exhaust port.

[0013] In one exemplary embodiment of this disclosure, the noise reduction device includes an expansion tube having an expansion cavity.

[0014] In one exemplary embodiment of this disclosure, the expansion cavity is filled with a noise-reducing medium.

[0015] In one exemplary embodiment of this disclosure, the noise reduction medium includes at least one of glass fiber wool, rock wool, and ceramic wool.

[0016] In one exemplary embodiment of this disclosure, the noise reduction device further includes an air inlet pipe and an air outlet pipe, the air inlet pipe and the air outlet pipe being respectively connected to the expansion pipe and communicating with the expansion cavity;

[0017] Specifically, in the axial direction of the intake pipe, the cross-sectional area of ​​the expansion cavity is larger than the cross-sectional area of ​​the intake pipe; in the axial direction of the exhaust pipe, the cross-sectional area of ​​the expansion cavity is larger than the cross-sectional area of ​​the exhaust pipe.

[0018] In one exemplary embodiment of this disclosure, the noise reduction device further includes an air inlet pipe and an air outlet pipe, the air inlet pipe and the air outlet pipe being respectively connected to the expansion pipe and communicating with the expansion cavity;

[0019] The air inlet pipe and the air outlet pipe are located outside the expansion cavity, or at least a portion of the air inlet pipe and the air outlet pipe are located inside the expansion cavity.

[0020] In one exemplary embodiment of this disclosure, the volume of the expansion cavity is greater than 5 ml.

[0021] In one exemplary embodiment of this disclosure, the suction assembly includes a diaphragm pump, the diaphragm pump includes a medium chamber, and the suction port and the exhaust port are respectively connected to the medium chamber.

[0022] In one exemplary embodiment of this disclosure, the diaphragm pump further includes a diaphragm cavity, and the diaphragm pump is also provided with an air inlet and an air outlet. The air inlet and the air outlet are respectively connected to the diaphragm cavity, and the air outlet of the diaphragm cavity is connected to the air inlet of the noise reduction device.

[0023] In one exemplary embodiment of this disclosure, the air outlet is connected to the air inlet of the noise reducer via a connecting pipe, and the connecting pipe is provided with a Helmholtz silencer and / or a quarter-wavelength tube.

[0024] In one exemplary embodiment of this disclosure, the exhaust port is connected to the air inlet of the noise reducer via a connecting pipe, and the connecting pipe is provided with a Helmholtz silencer and / or a quarter-wavelength tube.

[0025] In one exemplary embodiment of this disclosure, the connecting pipe is provided with the Helmholtz silencer and the quarter-wavelength tube, the quarter-wavelength tube being located between the Helmholtz silencer and the suction assembly.

[0026] According to another aspect of this disclosure, a cleaning system is provided, the cleaning system comprising:

[0027] Cleaning equipment;

[0028] The cleaning base station described in any of the above embodiments is used to interface with the cleaning equipment.

[0029] The cleaning base station provided in this disclosure has an air intake of the suction component connected to a negative pressure hole on a wastewater tank. Gas in the wastewater tank is discharged through the negative pressure hole via the exhaust port, creating a negative pressure within the tank. This negative pressure, created by the suction component, allows wastewater from the cleaning tank to be drawn into the wastewater tank through a wastewater pipe. However, the suction component generates significant noise when discharging exhaust gas through the exhaust port, especially when the exhaust gas is directly discharged outside the cleaning base station, impacting the user experience. To address this, this disclosure incorporates a noise reducer at the exhaust port of the suction component. This noise-generating gas is directed into the noise reducer for processing, effectively reducing the impact of the suction component's operating noise on the user and significantly improving the user experience when using the cleaning base station.

[0030] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0031] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0032] Figure 1 A schematic diagram of a cleaning system provided in one embodiment of this disclosure.

[0033] Figure 2 This is a schematic diagram of a dirt suction and noise reduction system provided in one embodiment of the present disclosure.

[0034] Figure 3 This is a schematic diagram of the structure of a noise reducer after the cover is opened, according to one embodiment of the present disclosure.

[0035] Figure 4 This is a schematic diagram of a noise reduction device with an inserted expansion cavity provided in one embodiment of the present disclosure.

[0036] Figure 5 This is a schematic diagram of a noise reducer with a non-insertionable expansion cavity provided in one embodiment of the present disclosure.

[0037] Figure 6 A schematic diagram of a dirt-absorbing and noise-reducing device provided for another embodiment of this disclosure.

[0038] 10. Cleaning equipment; 20. Cleaning base stations;

[0039] 210. Cleaning tank; 220. Wastewater tank; 230. Suction assembly; 240. Noise reducer; 241. Expansion tube; 242. Expansion chamber; 243. Air inlet pipe; 244. Air outlet pipe; 250. Quarter-wavelength tube; 260. Helmholtz silencer. Detailed Implementation

[0040] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0041] Although relative terms such as "up" and "down" are used in this specification to describe the relative relationship of one component of an icon to another, these terms are used only for convenience, such as according to the orientation of the examples shown in the accompanying drawings. It is understood that if the device of the icon is flipped upside down, the component described as "up" will become the component described as "down." When a structure is "up" of another structure, it may mean that the structure is integrally formed on the other structure, or that the structure is "directly" mounted on the other structure, or that the structure is "indirectly" mounted on the other structure through another structure.

[0042] The terms “a,” “one,” “the,” “the,” and “at least one” are used to indicate the presence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended inclusion and to mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.; the terms “first,” “second,” and “third,” etc., are used only as markers and are not a limitation on the number of objects.

[0043] Embodiments of this disclosure provide a cleaning system, such as Figure 1As shown, the cleaning system includes a cleaning device 10 and a cleaning base station 20. The cleaning device 10 can be, for example, a mopping robot, a sweeping robot, or a combined sweeping and mopping robot; the cleaning device 10 may include a device body, a drive module, a sensing module, a control module, a cleaning module, an energy module, and a human-machine interaction module. The cleaning base station 20 is used to dock with the cleaning device 10, allowing the cleaning device 10 to be parked. The cleaning device 10 can perform functions such as charging, self-cleaning, docking, sewage discharge, water replenishment, and dust collection on the cleaning base station 20.

[0044] In one embodiment, the device body is configured to automatically move along a target direction on a travel surface, which can be the surface to be cleaned by the cleaning device 10. If the cleaning device 10 is a sweeping and mopping robot, then the cleaning device 10 operates on the ground.

[0045] In one embodiment, the drive module may include a drive wheel assembly. The drive module can simultaneously control the left and right wheels. For more precise control of the machine's movement, the drive module preferably includes a left drive wheel assembly and a right drive wheel assembly. The left and right drive wheel assemblies are symmetrically arranged along a transverse axis defined by the device body. In one embodiment, to enable the automatic cleaning device to move more stably or with greater mobility on the ground, the automatic cleaning device may include one or more steering wheels. These steering wheels may be driven wheels or drive wheels, and their structural forms include, but are not limited to, casters. The steering wheels may be located in front of the drive wheel assembly. A drive motor provides power to the drive wheel assembly and / or the steering wheels.

[0046] In one embodiment, the sensing module may include a position determination device located above the device body, a buffer located in the forward portion of the device body, and a cliff sensor and ultrasonic sensor, infrared sensor, magnetometer, accelerometer, gyroscope, odometer, and other sensing devices located at the bottom of the device body, providing the control module with various position and motion state information of the device body. For example, the forward portion of the device body is provided with a buffer. During the cleaning process, when the drive wheel assembly propels the cleaning device 10 to move on the ground, the buffer detects one or more objects in the travel path of the cleaning device 10 via a sensor module, such as a collision sensor. The cleaning device 10 can pass through the objects detected by the collision sensor, such as steps, obstacles, or walls, and the control drive structure causes the cleaning device 10 to respond to the objects, such as stepping over steps.

[0047] In one embodiment, the control module can combine distance and speed information fed back from sensors such as buffers, cliff sensors, ultrasonic sensors, infrared sensors, magnetometers, accelerometers, gyroscopes, and odometers to comprehensively determine the current working state of the robot vacuum cleaner, such as climbing stairs, crossing thresholds, walking on carpets, being on a cliff, stuck above or below, having a full dustbin, or being picked up. It will also provide specific next action strategies for different situations, making the cleaning device 10 work more in line with the user's requirements and providing a better user experience. Furthermore, the control module can plan the most efficient and reasonable cleaning path and cleaning method based on real-time map information drawn using SLAM (Simultaneous Localization and Mapping), which can improve the cleaning efficiency of the cleaning device 10.

[0048] In one embodiment, the energy module may include a rechargeable battery, such as a nickel-metal hydride battery or a lithium battery. The rechargeable battery may be connected to a charging control circuit, a battery pack charging temperature detection circuit, and a battery undervoltage monitoring circuit. These circuits are then connected to a microcontroller control circuit. The main unit is charged by connecting to a charging station via charging electrodes located on the side or bottom of the unit.

[0049] In one embodiment, the human-machine interaction module may include buttons on the main unit panel for users to select functions; it may also include a display screen and / or indicator lights and / or a speaker, which display the current status of the machine or the available functions to the user; and it may also include a mobile client application. For path navigation cleaning equipment, the mobile client can display a map of the environment where the equipment is located, as well as the machine's position, providing users with richer and more user-friendly functions.

[0050] In one embodiment, the cleaning module may include a dry cleaning module and / or a combination of dry and wet cleaning modules. The dry cleaning module may include a roller brush assembly, side brushes, etc., while the wet cleaning module may include a mop head, a water tank, etc.

[0051] Currently, the wet cleaning components on the cleaning equipment 10 are typically roller mops, tracked mops, or dual-disc mops. After completing the mopping operation, the cleaning equipment 10 can autonomously move to the cleaning base station 20, place the mop in the cleaning tank on the base station body, and perform cleaning and drying operations on the mop using the cleaning components on the cleaning base station. During the mop cleaning process, wastewater is generated in the cleaning tank. At this time, the wastewater in the cleaning tank needs to be promptly pumped into the wastewater tank of the cleaning base station to improve the cleaning effect of the mop.

[0052] In response, this disclosure provides a clean base station, such as... Figure 2As shown, the clean base station 20 includes a base station body, a wastewater tank 220, a suction assembly 230, and a noise reducer 240. The base station body is provided with a cleaning tank 210. The wastewater tank 220 and the suction assembly 230 are located on the base station body. The wastewater tank 220 is used to recycle the wastewater in the cleaning tank 210. The suction assembly 230 has an air intake port and an exhaust port. The air intake port is connected to a negative pressure hole on the wastewater tank 220 to draw negative pressure from the wastewater tank 220. The noise reducer 240 is connected to the exhaust port of the suction assembly 230 so that the airflow discharged from the suction assembly 230 passes through the noise reducer 240.

[0053] The cleaning base station 20 disclosed herein has an air extraction port of the suction component 230 connected to a negative pressure hole on the wastewater tank 220. Through the negative pressure hole, gas in the wastewater tank 220 can be discharged through the exhaust port, creating a negative pressure within the wastewater tank 220. By creating this negative pressure in the wastewater tank 220 through the suction component 230, wastewater from the cleaning tank 210 can be drawn into the wastewater tank 220 through a wastewater pipe. However, the suction component 230 generates significant noise when discharging exhaust gas through the exhaust port, especially when the exhaust gas is directly discharged outside the cleaning base station 20, which negatively impacts the user experience. In response, this disclosure provides a noise reducer 240 at the exhaust port of the suction assembly 230, which can introduce the noisy gas generated when the suction assembly 230 is working into the noise reducer 240 for processing. According to actual measurements, the sound pressure level at 10cm from the exhaust port of the suction assembly 230 can be reduced by about 15.6dB, which effectively reduces the impact of the working noise of the suction assembly 230 on users and significantly improves the user experience when using the cleaning base station 20.

[0054] In one embodiment, the suction assembly 230 includes a diaphragm pump mounted on the base station body. The diaphragm pump has an intake port and an exhaust port. The intake port is connected to a negative pressure hole on the wastewater tank 220. The diaphragm pump is configured to discharge gas from the wastewater tank 220 through the negative pressure hole and exhaust port to create a negative pressure in the wastewater tank 220. The exhaust port of the diaphragm chamber is connected to the air inlet of the noise reducer 240. By creating a negative pressure in the wastewater tank 220 through the diaphragm pump, wastewater from the cleaning tank 210 is drawn into the wastewater tank 220 through a wastewater pipe. Since the diaphragm pump creates negative pressure through the reciprocating motion of the diaphragm within the diaphragm chamber, it eliminates the need for a shaft seal device, thus avoiding wastewater leakage caused by seal wear. Simultaneously, solid particles in the wastewater can smoothly pass through the media chamber with the diaphragm movement, preventing blockage. The diaphragm material (such as rubber or polytetrafluoroethylene) of the diaphragm pump has wear-resistant properties, resulting in a longer service life and lower maintenance costs. In addition, when the sewage level in the cleaning tank 210 is low, the diaphragm pump will not cause serious damage to the pump body even if it runs dry for a short time, reducing energy waste and equipment wear caused by frequent start-stop or liquid level fluctuations.

[0055] It is understood that the device providing negative pressure in the suction assembly 230 may also be a peristaltic pump, a rotary vane vacuum pump, a reciprocating vacuum pump, or a negative pressure fan, etc., and this disclosure does not impose any restrictions on it.

[0056] In one embodiment, the diaphragm pump can be an electric diaphragm pump or a pneumatic diaphragm pump. The pneumatic diaphragm pump has a pump body with a medium chamber and a diaphragm chamber, as well as an air intake port and an exhaust port connecting the medium chamber and an air inlet and an air outlet connecting the diaphragm chamber. The air outlet of the diaphragm chamber in the diaphragm pump is connected to the air inlet of the noise reducer 240, that is, both the medium chamber and the diaphragm chamber are connected to the noise reducer 240. When the diaphragm pump is working, compressed gas is introduced through the air inlet of the diaphragm chamber to drive the diaphragm to move. The exhaust gas after driving the diaphragm to move is discharged through the air outlet, which generates a large amount of noise. The noise is even greater when the exhaust gas is directly discharged outside the cleaning base station 20 through the air outlet, which affects the user's experience. To address this, by setting the noise reducer 240 at the air outlet of the diaphragm chamber, the noisy gas generated when the diaphragm pump is working can be introduced into the noise reducer 240 for treatment, effectively reducing the impact of the diaphragm pump's operating noise on the user and significantly improving the user's experience when using the cleaning base station 20.

[0057] It is understood that the noise reduction device 240 includes a noise reduction chamber, into which both the gas discharged from the outlet of the diaphragm chamber and the gas discharged from the exhaust port of the medium chamber are discharged. Alternatively, the noise reduction device 240 may include two independently configured sub-noise reduction devices or two independently configured noise reduction chambers, with the gas discharged from the outlet of the diaphragm chamber and the gas discharged from the exhaust port of the medium chamber discharged into two separate sub-noise reduction devices or two independently configured noise reduction chambers. The device can be specifically designed based on the characteristics of the gas discharged from the outlet of the diaphragm chamber and the gas discharged from the exhaust port of the medium chamber, employing different noise reduction chamber structures and materials. For example, suitable noise reduction chambers and sound-absorbing materials can be designed based on parameters such as gas flow rate and pressure to more accurately process the noise from the outlet of the diaphragm chamber and the exhaust port of the medium chamber.

[0058] Specifically, the base station body includes a base station housing, and the noise reduction device 240 includes a noise reduction housing. The noise reduction housing can independently form a noise reduction cavity, or the noise reduction housing and the base station housing can cooperate to form a noise reduction cavity. For example... Figure 3As shown, the noise reduction cavity is formed independently by the noise reduction housing, ensuring its sealing and stability, allowing the gas to undergo sufficient noise reduction treatment within the cavity. Simultaneously, the noise reducer 240 is designed as an independent modular structure, with its own independent noise reduction housing and cavity. This facilitates subsequent replacement and upgrades. When the noise reducer 240 malfunctions or requires improved noise reduction performance, a new noise reducer 240 can be directly replaced without large-scale modifications to the entire device, simplifying installation and maintenance and reducing production and operating costs. The noise reduction cavity is formed by the noise reduction housing in conjunction with the base station housing. By utilizing the base station housing as part of the noise reducer 240 structure, irregular spaces within the clean base station 20, such as gaps between internal components and reinforcing ribs, and corners, can be rationally arranged to create a space with noise reduction functionality. This fully utilizes the internal space of the equipment, relatively increasing the volume of the noise reduction cavity and thus improving the noise reduction effect.

[0059] When the noise reduction housing and the base station housing are combined to form a noise reduction cavity, the materials of the noise reduction housing and the base station housing can be the same, which facilitates the connection between the two and ensures the noise reduction effect of the noise reduction cavity.

[0060] In one embodiment, the base station body includes a base station housing with an exhaust port. The exhaust port of the noise reducer 240 is connected to the exhaust port. The gas processed by the noise reducer 240 can be directly discharged from the clean base station 20 through the exhaust port on the base station housing, ensuring smooth gas flow within the clean base station 20 and preventing back pressure in the pipeline due to poor exhaust, which would affect the effect on the sewage tank 220.

[0061] The cleaning base station 20 may also include a negative pressure fan, which is used to draw dust and debris cleaned from the dust box of the cleaning equipment 10 into the dust bag of the cleaning base station 20 through wind pressure, thereby achieving automatic dust collection of the cleaning equipment 10 on the cleaning base station 20. The air outlet of the negative pressure fan may correspond to an exhaust vent on the base station housing. The exhaust vent may be, for example, a grille structure installed on the side wall of the base station housing of the cleaning base station 20. The negative pressure fan and the noise reduction device 240 share a single exhaust vent.

[0062] In one embodiment, such as Figures 3-5 As shown, the noise reduction device 240 includes an expansion tube 241, which has an expansion cavity 242. The expansion cavity 242 alters the flow state of the gas. When noisy gas enters the expansion cavity 242, the sudden expansion of the space reduces the gas velocity and pressure, thus dispersing and attenuating the noise energy. Simultaneously, the special structure of the expansion cavity 242 allows the gas to undergo acoustic phenomena such as reflection and refraction within the cavity, further consuming noise energy and achieving the goal of noise reduction.

[0063] In one embodiment, a noise reduction structure may be provided in the expansion cavity 242, such as a labyrinthine gas channel. The gas turns and reflects multiple times in the labyrinthine channel, increasing the noise propagation path and time, so that the noise energy is continuously consumed during the propagation process, and has a certain attenuation effect on noise of different frequencies.

[0064] In one embodiment, the expansion cavity 242 is filled with a noise-reducing medium. The noise-reducing medium has good sound absorption properties. When the noisy gas flows in the expansion cavity 242 and comes into contact with the noise-reducing medium, the noise waves cause tiny vibrations within the medium. Through friction and viscosity, the noise energy is converted into heat energy, and the noise propagation path and time are also increased, thereby further improving the noise reduction effect.

[0065] The noise reduction medium includes at least one of glass fiber wool, rock wool, and ceramic wool. Glass fiber wool is lightweight and has good sound absorption properties, effectively absorbing mid-to-high frequency noise; rock wool has good sound absorption properties and good chemical stability, making it suitable for various environments; ceramic wool has advantages such as corrosion resistance and significant sound absorption, effectively reducing noise generated by the suction component 230 during operation, while ensuring the stability and reliability of the noise reduction medium during the use of the cleaning base station 20, extending the service life of the noise reduction device, and reducing equipment maintenance costs.

[0066] In one embodiment, such as Figures 3-5 As shown, the noise reduction device 240 also includes an air inlet pipe 243 and an air outlet pipe 244. The air inlet pipe 243 and the air outlet pipe 244 are respectively connected to the expansion pipe 241 and communicate with the expansion cavity 242. The air inlet pipe 243 and the air outlet pipe 244 facilitate the connection of the noise reduction device 240 to the air inlet pipe 243 and the air outlet pipe 244, thereby facilitating the deployment of the noise reduction device 240.

[0067] Specifically, in the axial direction of the intake pipe 243, the cross-sectional area of ​​the expansion cavity 242 is larger than that of the intake pipe 243; in the axial direction of the exhaust pipe 244, the cross-sectional area of ​​the expansion cavity 242 is larger than that of the exhaust pipe 244. That is, when the noisy gas enters the expansion cavity 242 through the intake pipe 243, the space suddenly expands, the gas flow rate decreases, the pressure decreases, and the noise energy is dispersed and attenuated.

[0068] Among them, such as Figure 4 and Figure 5As shown, the expansion cavity 242 can be either an insertable expansion cavity or a non-insertable expansion cavity. When it is an insertable expansion cavity, at least a portion of the inlet pipe 243 and the outlet pipe 244 are located within the expansion cavity 242; when it is a non-insertable expansion cavity, the inlet pipe 243 and the outlet pipe 244 are located outside the expansion cavity 242. The insertable expansion cavity can alter the gas flow path and acoustic characteristics within the expansion cavity 242 by inserting a component of a specific shape inside the expansion pipe 241, causing more complex reflections and refractions of the gas within the cavity, thereby enhancing the noise reduction effect. The non-insertable expansion cavity has a relatively simple structure; the gas flows directly within the expansion cavity 242 of the expansion pipe 241, reducing noise through spatial expansion.

[0069] In one embodiment, the volume of the expansion cavity 242 is greater than 5 ml, such as 5 ml, 7 ml, 9 ml, 10 ml, 12 ml, 15 ml, etc. The size of the expansion cavity 242 directly affects its noise reduction performance. A larger expansion cavity 242 volume can provide more space for the noisy gas, further reducing its flow rate and making the pressure change more obvious, thereby enhancing the dispersion and attenuation effect of noise energy. At the same time, a larger volume also facilitates more reflections and refractions of the noisy gas within the cavity, increasing the contact opportunities between the noise and the cavity walls and internal sound-absorbing materials, thus improving noise reduction efficiency.

[0070] The shape of the expansion cavity 242 is not fixed, meaning the shape of the noise-reducing housing can be determined based on the overall structural characteristics. If the overall space allows, the dimensions of the noise-reducing housing can be designed according to the frequency to be silenced, with the dimensional characteristic l corresponding to the frequency f. c The calculation formula is as follows:

[0071] f c =(c / l)(2n+1) / 4n=0,1,2,3…

[0072] Where c is the speed of sound and n is the resonance order.

[0073] In one embodiment, such as Figure 6As shown, the suction assembly 230 and the noise reducer 240 are connected by a connecting pipe, which is equipped with a Helmholtz silencer 260 and / or a quarter-wavelength tube 250. The Helmholtz silencer 260, based on the principle of resonance, uses a cavity and neck of specific dimensions to match its natural frequency with the low-to-mid-frequency noise generated by the suction assembly 230. When low-to-mid-frequency noise waves enter the Helmholtz silencer 260, resonance is triggered, and noise energy is consumed during the resonance process, thus effectively eliminating low-to-mid-frequency noise. The quarter-wavelength tube 250 utilizes the reflection and interference characteristics of sound waves propagating within the tube. When the tube length is one-quarter of the wavelength of the noise wave, the reflected wave and the incident wave are out of phase and interfere with each other to cancel each other out, achieving mid-to-high frequency noise reduction. The installation of these two silencers on the connecting pipe allows for precise noise reduction at both low and high frequencies generated by the suction assembly 230, compensating for the poor performance of the expansion tube 241 in processing certain frequency noises, and achieving multi-level and multi-mode noise suppression.

[0074] The diaphragm pump's exhaust port is connected to the noise reducer 240's inlet via a connecting pipe, and a Helmholtz silencer and / or a quarter-wavelength tube are installed on the connecting pipe; and / or, the diaphragm pump's outlet is connected to the noise reducer 240 via a connecting pipe, and a Helmholtz silencer and / or a quarter-wavelength tube are installed on the connecting pipe. Alternatively, the diaphragm pump's exhaust port and outlet can be connected to the noise reducer 240 via the same connecting pipe, requiring only one set of Helmholtz silencer and / or quarter-wavelength tube; or, the diaphragm pump's exhaust port and outlet can be connected to the noise reducer 240 via separate connecting pipes, with one set of Helmholtz silencer and / or quarter-wavelength tube installed on each connecting pipe.

[0075] Among them, such as Figure 6 As shown, the connecting pipe is equipped with a Helmholtz silencer 260 and a quarter-wavelength tube 250, with the quarter-wavelength tube 250 located between the Helmholtz silencer 260 and the suction assembly 230. Since the suction assembly 230 generates a significant amount of high-frequency noise at its outlet, the quarter-wavelength tube 250 provides initial processing of this noise. The noise processed by the quarter-wavelength tube 250 then enters the Helmholtz silencer 260, where it further dissipates low-frequency noise through resonance, effectively reducing the noise generated by the suction assembly 230. Of course, the Helmholtz silencer 260 could also be positioned between the quarter-wavelength tube 250 and the suction assembly 230; this disclosure does not impose any limitations on this.

[0076] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

Claims

1. A clean base station, characterized in that, include: The base station body is equipped with a cleaning tank. A wastewater tank is installed on the base station body and is used to recycle wastewater from the cleaning tank. A suction assembly having an air intake port and an exhaust port, wherein the air intake port is connected to the wastewater tank to create negative pressure in the wastewater tank; A noise reducer is connected to the exhaust port so that the airflow discharged from the suction assembly passes through the noise reducer.

2. The clean base station according to claim 1, characterized in that, The base station body includes a base station housing, and the noise reduction device includes a noise reduction housing; a noise reduction cavity is provided inside the noise reduction housing, or the noise reduction housing is connected to the base station housing to form a noise reduction cavity.

3. The clean base station according to claim 1, characterized in that, The base station body includes a base station housing, and the base station housing is provided with an exhaust port. The exhaust port of the noise reduction device is connected to the exhaust port.

4. The clean base station according to claim 1, characterized in that, The noise reduction device includes an expansion tube having an expansion cavity.

5. The clean base station according to claim 4, characterized in that, The expansion cavity is filled with noise-reducing medium.

6. The clean base station according to claim 5, characterized in that, The noise reduction medium includes at least one of glass fiber wool, rock wool, and ceramic wool.

7. The clean base station according to claim 4, characterized in that, The noise reduction device further includes an air inlet pipe and an air outlet pipe, which are respectively connected to the expansion pipe and communicate with the expansion cavity; Specifically, in the axial direction of the intake pipe, the cross-sectional area of ​​the expansion cavity is larger than the cross-sectional area of ​​the intake pipe; in the axial direction of the exhaust pipe, the cross-sectional area of ​​the expansion cavity is larger than the cross-sectional area of ​​the exhaust pipe.

8. The clean base station according to claim 4 or 7, characterized in that, The noise reduction device further includes an air inlet pipe and an air outlet pipe, which are respectively connected to the expansion pipe and communicate with the expansion cavity; The air inlet pipe and the air outlet pipe are located outside the expansion cavity, or at least a portion of the air inlet pipe and the air outlet pipe are located inside the expansion cavity.

9. The clean base station according to claim 4, characterized in that, The volume of the expansion cavity is greater than 5 ml.

10. The clean base station according to claim 1, characterized in that, The suction assembly includes a diaphragm pump, the diaphragm pump includes a medium chamber, and the suction port and the exhaust port are respectively connected to the medium chamber.

11. The clean base station according to claim 10, characterized in that, The diaphragm pump also includes a diaphragm cavity, and the diaphragm pump is also provided with an air inlet and an air outlet. The air inlet and the air outlet are respectively connected to the diaphragm cavity, and the air outlet of the diaphragm cavity is connected to the air inlet of the noise reduction device.

12. The clean base station according to claim 11, characterized in that, The air outlet is connected to the air inlet of the noise reducer via a connecting pipe, and the connecting pipe is equipped with a Helmholtz silencer and / or a quarter-wavelength tube.

13. The clean base station according to claim 1, characterized in that, The exhaust port is connected to the air inlet of the noise reducer via a connecting pipe, and the connecting pipe is equipped with a Helmholtz silencer and / or a quarter-wavelength tube.

14. The clean base station according to claim 12 or 13, characterized in that, The connecting pipe is equipped with the Helmholtz silencer and the quarter-wavelength tube, with the quarter-wavelength tube located between the Helmholtz silencer and the suction assembly.

15. A cleaning system, characterized in that, include: Cleaning equipment; The cleaning base station according to any one of claims 1 to 14, wherein the cleaning base station is used to interface with the cleaning equipment.

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