Small-bubble water grinding handle gas-liquid synergistic cleaning method and device

Abstract

The application discloses a small-bubble water grinder handle gas-liquid synergic cleaning method and device, relates to the field of beauty instrument technology, and aims at the problems of the existing equipment, such as continuous water output, non-self-adaptive start and stop, easy dripping and water-gas mutual interference, etc. The application adopts a control mode of double-pump independent driving cooperating with pressure sensor feedback, real-time monitoring of pipeline negative pressure is realized after system operation, when the handle is attached to the skin and the negative pressure rises to the starting threshold value, the peristaltic pump is automatically controlled to quantitatively supply water, water and negative pressure gas flow are mixed to generate ultramicro bubbles to perform deep cleaning, and waste liquid is synchronously pumped away by the vacuum pump; when the handle is separated from the skin and the negative pressure drops to the stop threshold value, the peristaltic pump is instantaneously turned off to cut off water. The application realizes intelligent control of skin-attached water output and skin-separated water cut-off, avoids dripping and waste, ensures uniform and stable water-gas output, and improves operation experience and cleaning effect.

Description

Technical Field

[0001] This application relates to the field of beauty and cleansing instrument technology, and in particular to a water-jet cleaning handle for a small bubble beauty instrument and its synergistic control technology. Specifically, it relates to a method and device for gas-liquid synergistic cleaning of a small bubble water-jet handle. Background Technology

[0002] As a widely used deep skin cleansing device, the microbubble beauty device's core component, the water-jet cleaning handle, utilizes the combined action of water jets and vacuum negative pressure to soften sebum, exfoliate dead skin cells, and clean pores in daily beauty care scenarios.

[0003] Currently, most mainstream microbubble water scrub handles on the market generally use a single negative pressure pump combined with gravity-fed water supply, or a simple constant-pressure water supply using a regular water pump, to maintain the output of cleansing solution and the recycling of waste liquid at the front of the handle. However, the existing control logic and working method have significant technical defects: First, the existing system lacks a negative pressure detection and feedback mechanism, and the water supply cannot adaptively start and stop based on whether the handle is in contact with the skin. This causes the device to continuously output water after being turned on, which can easily cause dripping and splashing when the beautician moves between different areas of the face or suspends the handle, resulting in the waste of expensive cleansing solution. Second, the existing negative pressure air source and liquid circuit are coupled together and lack an independent metering liquid supply component. Natural fluctuations on the negative pressure side directly interfere with the water flow, resulting in uneven bubble size and poor gas-liquid mixing, thus causing unstable deep cleansing effects.

[0004] Therefore, finding a suitable solution is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] Based on this, the purpose of this invention is to overcome the technical defects of existing microbubble water polishing handles, such as the inability to adaptively start and stop, easy dripping, and uneven gas-liquid mixing, and to provide a method and device for gas-liquid synergistic cleaning of microbubble water polishing handles. Based on pressure sensing feedback and a dual-pump independent drive architecture, this application realizes intelligent closed-loop control of quantitative water output when in contact with the skin and instantaneous liquid cut-off when removed from the skin, avoiding equipment dripping and waste of consumables, and ensuring uniform and stable output of microbubbles, thereby improving the deep cleaning effect and operating experience.

[0006] This application provides a method for gas-liquid synergistic cleaning of a microbubble water mill handle, applicable to a cleaning system comprising a water mill cleaning handle, a negative pressure vacuum pump, a peristaltic pump, a pressure sensor, a control module, and pipelines. The method includes the following steps:

[0007] After receiving the start command, the control module controls the negative pressure vacuum pump to start, and establishes a basic negative pressure in the negative pressure pipeline connecting the water mill cleaning handle and the negative pressure vacuum pump.

[0008] The control module obtains the actual negative pressure detection value in the negative pressure pipeline in real time through the pressure sensor;

[0009] When the actual negative pressure detection value reaches or exceeds the preset skin-touch activation threshold, the control module controls the peristaltic pump to start, and delivers a quantitative amount of cleaning fluid into the water-polishing handle at a set flow rate.

[0010] The delivered metered cleaning fluid mixes with the negative pressure airflow inside the water-mill cleaning handle to form microbubbles, which then act on the outside. At the same time, the suction generated by the negative pressure vacuum pump draws in and recycles the waste liquid and dirt.

[0011] During the operation of the peristaltic pump, if the actual negative pressure detection value drops and is less than or equal to the preset skin-free stop threshold, the control module immediately controls the peristaltic pump to stop operating, interrupting the delivery of the cleaning fluid.

[0012] Furthermore, the conditions for the control module to control the peristaltic pump to start also include: the continuous state in which the actual negative pressure detection value reaches or exceeds the preset skin-touch start threshold reaches a preset start delay time;

[0013] The conditions under which the control module controls the peristaltic pump to stop operating also include: the continuous state in which the actual negative pressure detection value decreases and is less than or equal to the preset skin-free stop threshold reaches a preset stop delay time.

[0014] Furthermore, the skin-attachment initiation threshold and the skin-removal stop threshold are generated through the following steps:

[0015] After establishing a basic negative pressure, the control module acquires and records the basic negative pressure value under the current stable state.

[0016] The control module calculates and generates the skin-application start threshold based on the base negative pressure value plus a first set pressure difference, and calculates and generates the skin-removal stop threshold based on the base negative pressure value plus a second set pressure difference, wherein the first set pressure difference is greater than or equal to the second set pressure difference.

[0017] Furthermore, the method also includes:

[0018] During the operation of the peristaltic pump, the control module accumulates the continuous operating time of the peristaltic pump in real time;

[0019] When the continuous running time reaches the preset safety timeout period, and the actual negative pressure detection value is still greater than the skin-free stop threshold, the control module forcibly controls the peristaltic pump to stop running and outputs a safety warning signal.

[0020] Furthermore, the step of mixing the delivered metered cleaning fluid with a negative pressure airflow inside the water-mill cleaning handle to form microbubbles and then acting on the outside includes:

[0021] The metered cleaning fluid delivered by the peristaltic pump enters the interior of the water mill cleaning handle and flows along a spiral guide surface with a preset spiral angle of 30°-60°;

[0022] Under the shearing action of the spiral guide surface and the impact of the negative pressure airflow in the negative pressure pipeline, the quantitative cleaning liquid is physically broken up and mixed with the airflow to stably generate ultra-microbubbles with a particle size in the range of 50–150 μm.

[0023] Furthermore, the control module controls the operation of the negative pressure vacuum pump to output an actual negative pressure of 40-70 kPa;

[0024] The control module controls the peristaltic pump to deliver cleaning fluid to the water-milling cleaning handle in a metered range of 0.2-2 mL / s. The control module synchronously adjusts the output flow rate of the peristaltic pump and the negative pressure of the negative pressure vacuum pump according to the received cleaning command.

[0025] Furthermore, after controlling the peristaltic pump to stop operating and interrupting the delivery of the cleaning fluid, the method further includes:

[0026] By using a miniature check valve installed on the inlet pipe connecting the peristaltic pump and the water mill cleaning handle, the liquid flow in the inlet pipe is cut off by the reset closing of the miniature check valve at the instant the peristaltic pump stops running.

[0027] By locking the liquid column in the inlet pipe, the residual cleaning fluid is prevented from flowing back into the water-milling cleaning handle or dripping outward due to gravity or negative pressure fluctuations.

[0028] Furthermore, the step of using the suction force generated by the negative pressure vacuum pump to draw and recover waste liquid and dirt includes:

[0029] The pumped waste liquid and dirt enter the waste liquid collection device through the negative pressure pipeline, and are directly guided and settled into the bottom of the waste liquid collection device through the long conduit inserted at the top of the waste liquid collection device.

[0030] Furthermore, the negative pressure vacuum pump evacuates the deflated air chamber at the top of the waste liquid collection device through a short conduit inserted into the top of the waste liquid collection device, thereby utilizing the physical separation of gas and liquid to prevent splashing droplets and water mist from being sucked into the negative pressure vacuum pump.

[0031] Furthermore, the method also includes:

[0032] When the control module receives a cleaning stop command, the control module controls the peristaltic pump to stop running and shuts down the negative pressure vacuum pump after a set delay time to evacuate the waste liquid and dirt remaining in the water-grind cleaning handle and negative pressure pipeline.

[0033] This application provides a microbubble water milling handle air-liquid synergistic cleaning device for applying the microbubble water milling handle air-liquid synergistic cleaning method described in any of the above claims, the device comprising:

[0034] The negative pressure establishment module, after receiving the start command, controls the negative pressure vacuum pump to start and establish a basic negative pressure in the negative pressure pipeline connecting the water mill cleaning handle and the negative pressure vacuum pump;

[0035] The monitoring module and the control module acquire the actual negative pressure detection value in the negative pressure pipeline in real time through the pressure sensor.

[0036] When the actual negative pressure detection value reaches or exceeds the preset skin-touch activation threshold, the control module controls the peristaltic pump to start, and delivers a quantitative amount of cleaning fluid into the water-polishing handle at a set flow rate.

[0037] The cleaning module delivers a measured amount of cleaning liquid that mixes with negative pressure airflow inside the water-mill cleaning handle to form microbubbles that act on the outside. At the same time, the suction generated by the negative pressure vacuum pump draws in and recycles waste liquid and dirt.

[0038] The liquid cut-off module, during the operation of the peristaltic pump, if the actual negative pressure detection value drops and is less than or equal to the preset skin-free stop threshold, the control module immediately controls the peristaltic pump to stop operating, interrupting the delivery of cleaning fluid.

[0039] According to the microbubble water scrub handle air-liquid synergistic cleaning method and device provided in this application, the beneficial effects are as follows: by pre-establishing a basic negative pressure and acquiring the actual negative pressure detection value in the pipeline in real time, when the actual negative pressure reaches the preset start threshold due to contact with the skin, the system automatically triggers the peristaltic pump to supply liquid in a quantitative manner for efficient air-liquid mixing cleaning; when the handle leaves the skin and causes the negative pressure to drop to the stop threshold, the system instantly cuts off the peristaltic pump supply. This mechanism realizes intelligent synergy of water supply upon contact with the skin and water supply cut off upon removal from the skin. It not only avoids the problems of dripping, splashing and waste of consumables that are easy to occur when the traditional water scrub handle is in the state of facial movement or suspension, but also ensures that the air path and liquid path do not interfere with each other, greatly improving the uniformity of microbubble generation and the stable effect of deep pore cleaning. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a flowchart illustrating a method for gas-liquid synergistic cleaning of a microbubble water mill handle in one embodiment.

[0042] Figure 2 This is a schematic diagram of a module of a small bubble water mill handle air-liquid synergistic cleaning device in one embodiment;

[0043] Figure 3 This is a schematic diagram of the structure of a small bubble water mill handle air-liquid synergistic cleaning device in one embodiment.

[0044] 10. Water-polished handle; 20. Negative pressure vacuum pump; 30. Peristaltic pump; 40. Control module; 41. Pressure sensor; 50. Solution bottle; 60. Waste liquid collection device. Detailed Implementation

[0045] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the 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.

[0046] Example 1

[0047] Existing small bubble water mill handles lack a pipeline pressure monitoring and feedback mechanism and adaptive start-stop logic, causing the handle to continue blindly dispensing water even when the face is being moved or suspended in the air, resulting in serious residual liquid leakage, splashing, and high waste of consumables. This embodiment also solves the technical problems of inaccurate water flow control, unstable gas-liquid mixing, and poor deep pore cleaning effect caused by mutual interference between the air source and the liquid path in traditional equipment.

[0048] See Figure 1 , Figure 2 and Figure 3 As shown, this embodiment provides a microbubble water mill handle air-liquid synergistic cleaning method, applied to a cleaning system including a water mill cleaning handle 10, a negative pressure vacuum pump 20, a peristaltic pump 30, a pressure sensor 41, a control module 40, and pipelines. The method includes the following steps:

[0049] S1. After receiving the start command, the control module 40 controls the negative pressure vacuum pump 20 to start, and establishes a basic negative pressure in the negative pressure pipeline connecting the water mill cleaning handle 10 and the negative pressure vacuum pump 20.

[0050] In step S1, a stable basic negative pressure environment is established in the pipeline beforehand. On the one hand, this provides a reliable monitoring baseline for judging whether the device is in contact with the skin due to subsequent pressure fluctuations. On the other hand, it ensures that the device can immediately generate a strong adsorption force the moment it comes into contact with the user's skin, eliminating the air extraction delay in the initial stage.

[0051] S2. The control module 40 obtains the actual negative pressure detection value in the negative pressure pipeline in real time through the pressure sensor 41.

[0052] In step S2, the traditional open-loop mechanical working mode is upgraded to dynamic closed-loop monitoring, which enables the rapid capture of minute changes in pipeline air pressure caused by changes in the contact state of the handle tip.

[0053] S3. When the actual negative pressure detection value reaches or exceeds the preset skin-touch activation threshold, the control module 40 controls the peristaltic pump 30 to start, and delivers a quantitative amount of cleaning fluid into the water-polishing handle 10 at a set flow rate.

[0054] In step S3, when the handle is tightly attached to the skin, the front hole is blocked, causing the negative pressure to rise sharply. This action of attaching to the skin is recognized and the peristaltic pump 30 is triggered in a directional manner. This avoids ineffective water output when the handle is suspended or not in operation, thus saving beauty cleansing liquid.

[0055] S4. The metered cleaning liquid delivered mixes with the negative pressure airflow inside the water mill cleaning handle 10 to form microbubbles and act on the outside. At the same time, the suction generated by the negative pressure vacuum pump 20 draws in and recovers the waste liquid and dirt.

[0056] In step S4, microbubbles can penetrate deep into pores to efficiently soften and remove oil and dead skin cells, and then the waste liquid containing dirt is simultaneously drawn away by the negative pressure channel.

[0057] S5. During the operation of the peristaltic pump 30, if the actual negative pressure detection value drops and is less than or equal to the preset skin-free stop threshold, the control module 40 immediately controls the peristaltic pump 30 to stop operating and interrupt the delivery of the cleaning fluid.

[0058] In step S5, when the operator moves the handle away from the skin surface to prepare to transfer the operating area, the tube seal is released, causing the negative pressure to drop instantly. After the system detects this signal, it immediately cuts off the peristaltic pump 30, eliminating the discomfort caused by residual liquid dripping and splashing during the traditional facial gliding transfer process, and keeping the entire operation dry and clean.

[0059] It should be noted that by establishing a basic negative pressure in advance and acquiring the actual negative pressure detection value in the pipeline in real time, when the actual negative pressure reaches the preset start threshold due to contact with the skin, the system automatically triggers the peristaltic pump 30 to supply liquid in a quantitative manner for efficient gas-liquid mixing cleaning; when the handle leaves the skin and causes the negative pressure to drop to the stop threshold, the system instantly cuts off the peristaltic pump 30 from supplying liquid from the solution bottle 50. This mechanism achieves intelligent coordination of water supply upon contact with the skin and water supply cut off upon removal from the skin. It not only avoids the problems of dripping, splashing and waste of consumables that are easy to occur when the traditional water massage handle is in the state of facial movement or suspension, but also ensures that the air path and liquid path do not interfere with each other, which greatly improves the uniformity of ultra-microbubble generation and the stable effect of deep pore cleaning.

[0060] Example 2

[0061] This embodiment provides a further technical solution based on Embodiment 1.

[0062] In this embodiment, the conditions for the control module 40 to control the peristaltic pump 30 to start also include: the continuous state in which the actual negative pressure detection value reaches or exceeds the preset skin-touch start threshold reaches a preset start delay time.

[0063] The conditions under which the control module 40 controls the peristaltic pump 30 to stop operating also include: the continuous state in which the actual negative pressure detection value decreases and is less than or equal to the preset skin-free stop threshold reaches a preset stop delay time.

[0064] Specifically, when the handle first touches the skin, although the front hole is partially blocked, which may cause a sudden change in air pressure and trigger the start-up threshold, the annular suction hole often has not yet formed a perfect fit with the skin. Setting a start-up delay time allows the control system to wait until the operation gestures are stable and a completely and solid high negative pressure sealed environment is established between the handle and the skin before issuing the water injection command. This avoids the problem of cleaning fluid leakage and splashing caused by rapid water spraying due to poor sealing. In actual beauty procedures, the handle needs to glide continuously along the uneven facial contours such as the nose and jawline for cleaning. During the glide, momentary micro-air leaks can easily occur, causing a brief drop in the negative pressure signal. The stop delay time acts as a signal buffer, preventing the system from immediately and abruptly cutting off the water supply when a momentary drop in negative pressure is detected. If the negative pressure recovers quickly within the delay buffer period, the peristaltic pump 30 maintains continuous liquid supply, effectively avoiding flow interruption / stuttering caused by operational bumps, eliminating false triggering under critical conditions, and preventing frequent start-stop of the peristaltic pump 30 in a short period of time. This significantly reduces the starting impact of the motor and the wear of the mechanical structure, improving the operating life and reliability of the entire cleaning system.

[0065] In this embodiment, the skin-attachment start threshold and the skin-removal stop threshold are generated through the following steps:

[0066] After establishing a basic negative pressure, the control module 40 acquires and records the basic negative pressure value under the current stable state.

[0067] The control module 40 calculates and generates the skin-application start threshold based on the base negative pressure value plus a first set pressure difference, and calculates and generates the skin-removal stop threshold based on the base negative pressure value plus a second set pressure difference, wherein the first set pressure difference is greater than or equal to the second set pressure difference.

[0068] Specifically, traditional fixed thresholds are easily affected by external interference. For example, differences in atmospheric pressure at high altitudes, minor leaks due to pipeline aging after long-term use, or partial blockage of the waste liquid collection tank filter can cause the baseline negative pressure under no-load conditions to shift, leading to the failure of the fixed threshold or a significant decrease in sensitivity. This embodiment dynamically captures the baseline at each startup or initial pressure build-up, transforming absolute value judgment into relative pressure difference judgment. Regardless of changes in hardware status or external environment, the relative abrupt change difference improves the equipment's environmental adaptability.

[0069] In this embodiment, the method further includes:

[0070] During the operation of the peristaltic pump 30, the control module 40 accumulates the continuous operating time of the peristaltic pump 30 in real time;

[0071] When the continuous running time reaches the preset safety timeout period, and the actual negative pressure detection value is still greater than the skin-free stop threshold, the control module 40 forcibly controls the peristaltic pump 30 to stop running and outputs a safety warning signal.

[0072] Specifically, during the period when the control module 40 triggers the peristaltic pump 30 to start and run continuously, the internal timer starts synchronously to accumulate the continuous running time of the peristaltic pump 30 in real time. At the same time, the control module 40 will perform a complex logic judgment on the current working condition. When the continuous running time reaches the system's preset safety timeout time, such as the maximum continuous liquid output time set to 30 seconds or 60 seconds, and the actual negative pressure detection value remains high during this period, that is, it is still greater than the skin-free stop threshold, the system determines that the skin has not been freed. The control module 40 will ignore the current negative pressure satisfaction state and issue a command to control the peristaltic pump 30 to stop running immediately, interrupting the delivery of cleaning fluid. At the same time, the control module 40 will also trigger the display screen or buzzer to output a safety warning signal in the form of sound, light or pop-up window.

[0073] It should be noted that in actual beauty settings, beauticians may leave the water-based cleansing handle 10 upside down on a flat table, acrylic holder, or silicone pad without turning it off. This flat placement creates a perfectly sealed space, causing the negative pressure sensor to continuously detect high negative pressure. The system may mistakenly believe the handle is constantly pressed against the skin, thus continuously pumping out cleansing fluid. The timeout protection mechanism can identify this abnormal deadlock state of prolonged inactivity and forcibly shut off the water supply at a safety threshold, effectively preventing unnecessary consumption. If the peristaltic pump 30 supplies water under abnormally pressed conditions without supervision, the negative pressure vacuum pump 20 will also simultaneously and continuously draw in this liquid, easily causing the waste liquid collection device 60 to overflow in a short time. This can lead to waste liquid that cannot settle in time being directly sucked in and damaging the motor core of the vacuum pump. The forced pump stop mechanism avoids continuous liquid input, protecting the entire machine's circuitry and air supply system.

[0074] In this embodiment, the step of mixing the delivered metered cleaning liquid with negative pressure airflow inside the water mill cleaning handle 10 to form microbubbles and then acting on the outside includes:

[0075] The metered cleaning fluid delivered by the peristaltic pump 30 enters the interior of the water mill cleaning handle 10 and flows along a spiral guide surface with a preset spiral angle of 30°-60°.

[0076] Under the shearing action of the spiral guide surface and the impact of the negative pressure airflow in the negative pressure pipeline, the quantitative cleaning liquid is physically broken up and mixed with the airflow to stably generate ultra-microbubbles with a particle size in the range of 50-150μm.

[0077] Specifically, traditional water mill handles lack a structured flow guide design, often relying on natural negative pressure turbulence to mix air, resulting in inconsistent water output, sometimes as a water column and sometimes as large bubbles. This embodiment, through a flow guide surface with a set 30°-60° spiral angle, not only allows the cleaning fluid to stay in the cavity for a moderate time, but also stretches the water flow into a thin water film under fluid resistance, ensuring uniform and stable bubble output.

[0078] In this embodiment, the control module 40 controls the operation of the negative pressure vacuum pump 20 to output an actual negative pressure of 40-70 kPa;

[0079] The control module 40 controls the peristaltic pump 30 to operate, and delivers cleaning fluid to the water-grinding cleaning handle 10 in a quantitative range of 0.2-2 mL / s. The control module 40 synchronously matches and adjusts the output flow rate of the peristaltic pump 30 with the negative pressure of the negative pressure vacuum pump 20 according to the received cleaning instructions.

[0080] Specifically, the control module 40 controls the operation of the vacuum pump 20 to maintain its output negative pressure within the parameter range of 40-70 kPa. Simultaneously, the control module 40 controls the peristaltic pump 30 to deliver a quantitative amount of cleaning fluid to the water-polishing handle 10 within an adjustment range of 0.2-2 mL / s. When the control module 40 receives an external cleaning command, the system's internal algorithm synchronously matches and adjusts the output flow rate of the peristaltic pump 30 with the negative pressure of the vacuum pump 20. In this matching logic, flow rate and negative pressure are positively correlated; that is, when the negative pressure level is increased, the control module 40 synchronously instructs the peristaltic pump 30 to increase the fluid supply flow rate; conversely, when the negative pressure level is decreased, the fluid supply flow rate is synchronously reduced.

[0081] It should be noted that when the operator only increases the negative pressure without increasing the water flow, the front end of the handle will be in a dry suction or dry scraping state, rubbing and pulling on the user's skin. Conversely, if the water flow is too large and the negative pressure is too small, the water cannot be removed in time, resulting in water dripping all over the face. The positive correlation synchronous matching logic in this embodiment ensures that, regardless of the setting, the air volume, suction power, and water volume supplied to the handle are always maintained at the optimal ratio for generating high-quality microbubbles. Through synchronous linkage adjustment, the device can adapt to the personalized needs of different skin types with one click based on different cleaning instructions received. For sensitive skin with a thin stratum corneum, it uses low negative pressure and low flow for gentle operation, which is gentle and moisturizing without damaging the skin; for the T-zone with excessive oil secretion or thick stratum corneum, the system switches to high negative pressure and high flow for rinsing with one click, removing dirt and quickly sucking it away, improving the practicality and intelligence of the device in different beauty scenarios.

[0082] In this embodiment, after controlling the peristaltic pump 30 to stop operating and interrupting the delivery of the cleaning fluid, the method further includes:

[0083] By using a miniature check valve installed on the inlet pipe connecting the peristaltic pump 30 and the water mill cleaning handle 10, the liquid flow in the inlet pipe is cut off by the reset closing of the miniature check valve at the instant the peristaltic pump 30 stops running.

[0084] By locking the liquid column in the inlet pipe, the residual cleaning liquid is prevented from flowing back into the water-milling cleaning handle 10 or dripping outward due to gravity or negative pressure fluctuations.

[0085] Specifically, a miniature check valve is pre-installed on the inlet pipe connecting the peristaltic pump 30 and the water-grinding cleaning handle 10. When the control module 40 issues a stop command and the peristaltic pump 30 stops running, the pressure of the propellant water in the inlet pipe disappears instantly. At this time, without additional electrical control, the natural reset and closure of the internal components of the miniature check valve rapidly and tightly cuts off the liquid flow in the inlet pipe within milliseconds. Through this unidirectional conduction and reverse cut-off function of the check valve, the originally flowing cleaning fluid is firmly locked inside the pipe, forming a stationary liquid column confined at both ends. This effectively resists the gravitational siphon effect of the residual cleaning fluid and isolates the fluctuation interference of residual negative pressure at the front end, preventing the water in the pipe from overflowing and dripping to the front of the water-grinding cleaning handle 10 or flowing back.

[0086] It should be noted that even if the water pump is shut off solely by the control module 40, residual water flow will still exist in the pipeline due to inertia, gravity, or pressure difference. This will cause a few drops of water to drip even after the handle is removed from the skin. This embodiment uses a one-way valve to shut off the water flow the instant the pump stops, similar to turning off a faucet, combining hardware and software leak prevention.

[0087] In this embodiment, the step of using the suction force generated by the negative pressure vacuum pump 20 to draw and recover waste liquid and dirt includes:

[0088] The pumped waste liquid and dirt enter the waste liquid collection device 60 through the negative pressure pipeline, and are directly guided and settled into the bottom of the waste liquid collection device 60 through the long conduit inserted at the top of the waste liquid collection device 60.

[0089] Furthermore, the negative pressure vacuum pump 20 evacuates the deflated air chamber at the top of the waste liquid collection device 60 through a short conduit inserted into the top of the waste liquid collection device 60, thereby utilizing the physical separation of gas and liquid to prevent splashing droplets and water mist from being sucked into the negative pressure vacuum pump 20.

[0090] Specifically, waste liquid containing dirt, shed skin cells, and microbubbles is drawn into the waste liquid collection device 60 at high speed through a negative pressure pipeline by the suction generated by the negative pressure vacuum pump 20. Upon entering the collection device, the waste liquid does not fall freely from the top of the device; instead, it is guided and steadily settled at the bottom of the waste liquid collection device 60 through a long conduit extending downwards from the top of the device to its inner bottom. Simultaneously, the negative pressure vacuum pump 20 performs vacuuming through another short conduit extending from the top of the device. The end of this short conduit only remains in the deflated air chamber at the top of the waste liquid collection device 60, specifically for continuously evacuating the space above the device that is not occupied by liquid. The vertical difference created by the long and short conduits achieves gas-liquid phase separation, thereby preventing splashing droplets and water mist from being accidentally drawn into the negative pressure vacuum pump 20 during high-speed suction.

[0091] It should be noted that traditional water-based beauty devices often have simple waste liquid containers. When waste liquid, carrying a high-speed airflow, is injected from the top, it easily impacts the surface, creating a large amount of splashing water and fine mist. If the air extraction port is not positioned correctly, the mist can be instantly sucked into the negative pressure vacuum pump 20, causing the motor to rust, short-circuit, or even burn out. This embodiment uses a long conduit to guide the waste liquid directly to the bottom of the container for settling, while the short conduit only extracts dry air at the highest safe area, avoiding the path of liquid water entering the pneumatic pump. If the waste liquid falls freely from a height, the strong impact will create a large amount of foam on the surface. Once the foam accumulates and rises, it can easily block the air extraction port at the top. In this solution, the long conduit buries the inlet point deep at the bottom, effectively reducing fluid impact, suppressing surface turbulence and foam generation, maximizing the actual usable volume of the collection container, and reducing the inconvenience of frequent emptying by the beautician.

[0092] In this embodiment, the method further includes:

[0093] When the control module 40 receives the cleaning stop command, the control module 40 controls the peristaltic pump 30 to stop running and shuts down the negative pressure vacuum pump 20 after a set delay time, so as to evacuate the waste liquid and dirt remaining in the water-grind cleaning handle 10 and the negative pressure pipeline.

[0094] Specifically, during the suction process, the microbubble beauty device removes a large amount of viscous sebum, blackheads, and softened dead skin cells. If the device is turned off simultaneously, this viscous waste liquid mixed with dirt will stagnate and adhere to the narrow spiral guide cavity of the handle and the inner wall of the slender corrugated tube. Once the moisture evaporates, the dirt will dry and solidify, eventually leading to severe blockage of the pipeline or even rendering it unusable. This embodiment utilizes a delayed negative pressure airflow to perform a powerful, high-speed drying and purging of the entire pipeline after the water supply is stopped, ensuring the pipeline channels remain unobstructed for a long time.

[0095] Example 3

[0096] This embodiment provides a microbubble water milling handle air-liquid synergistic cleaning device for applying the microbubble water milling handle air-liquid synergistic cleaning method described in any of the above embodiments. The device includes:

[0097] The negative pressure establishment module, after receiving the start command, controls the negative pressure vacuum pump 20 to start, and establishes a basic negative pressure in the negative pressure pipeline connecting the water mill cleaning handle 10 and the negative pressure vacuum pump 20;

[0098] The monitoring module, the control module 40, obtains the actual negative pressure detection value in the negative pressure pipeline in real time through the pressure sensor 41;

[0099] When the actual negative pressure detection value reaches or exceeds the preset skin-touch activation threshold, the control module 40 controls the peristaltic pump 30 to start, and delivers a quantitative amount of cleaning fluid into the water-polishing handle 10 at a set flow rate.

[0100] The cleaning module delivers a quantitative cleaning liquid that mixes with the negative pressure airflow inside the water mill cleaning handle 10 to form microbubbles, which then act on the outside. At the same time, the suction generated by the negative pressure vacuum pump 20 draws in and recycles the waste liquid and dirt.

[0101] If, during the operation of the peristaltic pump 30, the actual negative pressure detection value decreases and is less than or equal to a preset skin-free stop threshold, the control module 40 immediately controls the peristaltic pump 30 to stop operating, interrupting the delivery of the cleaning fluid.

[0102] It should be noted that by establishing a basic negative pressure in advance and acquiring the actual negative pressure detection value in the pipeline in real time, when the actual negative pressure reaches the preset start threshold due to contact with the skin, the system automatically triggers the peristaltic pump 30 to supply liquid in a quantitative manner for efficient gas-liquid mixing cleaning; when the handle leaves the skin and causes the negative pressure to drop to the stop threshold, the system instantly cuts off the liquid supply of the peristaltic pump 30. This mechanism realizes intelligent coordination of water supply upon contact with the skin and water supply cut off upon removal from the skin. It not only avoids the problems of dripping, splashing and waste of consumables that are easy to occur when the traditional water massage handle is in the state of facial movement or suspension, but also ensures that the air path and liquid path do not interfere with each other, which greatly improves the uniformity of ultra-microbubble generation and the stable effect of deep pore cleaning.

[0103] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0104] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0105] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments described above. Any references to memory, storage, databases, or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), RAMbus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and RAMbus dynamic RAM (RDRAM), etc.

[0106] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0107] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A method for gas-liquid synergistic cleaning of a small bubble water mill handle, characterized in that, The method, applicable to a cleaning system comprising a water-jet cleaning handle, a negative pressure vacuum pump, a peristaltic pump, a pressure sensor, a control module, and piping, includes the following steps: After receiving the start command, the control module controls the negative pressure vacuum pump to start, and establishes a basic negative pressure in the negative pressure pipeline connecting the water mill cleaning handle and the negative pressure vacuum pump. The control module obtains the actual negative pressure detection value in the negative pressure pipeline in real time through the pressure sensor; When the actual negative pressure detection value reaches or exceeds the preset skin-touch activation threshold, the control module controls the peristaltic pump to start, and delivers a quantitative amount of cleaning fluid into the water-polishing handle at a set flow rate. The delivered quantitative cleaning solution mixes with the negative pressure airflow inside the water-mill cleaning handle to form microbubbles, which then act on the outside. At the same time, the suction generated by the negative pressure vacuum pump draws in and recycles the waste liquid and dirt. During the operation of the peristaltic pump, if the actual negative pressure detection value drops and is less than or equal to the preset skin-free stop threshold, the control module immediately controls the peristaltic pump to stop operating, interrupting the delivery of the cleaning fluid.

2. The method for gas-liquid synergistic cleaning of a microbubble water mill handle according to claim 1, characterized in that, The conditions under which the control module controls the peristaltic pump to start also include: the continuous state in which the actual negative pressure detection value reaches or exceeds the preset skin-touch start threshold reaches a preset start delay time. The conditions under which the control module controls the peristaltic pump to stop operating also include: the continuous state in which the actual negative pressure detection value decreases and is less than or equal to the preset skin-free stop threshold reaches a preset stop delay time.

3. The method for gas-liquid synergistic cleaning of a microbubble water mill handle according to claim 1 or 2, characterized in that, The skin-application start threshold and the skin-removal stop threshold are generated through the following steps: After establishing a basic negative pressure, the control module acquires and records the basic negative pressure value under the current stable state. The control module calculates and generates the skin-application start threshold based on the base negative pressure value plus a first set pressure difference, and calculates and generates the skin-removal stop threshold based on the base negative pressure value plus a second set pressure difference, wherein the first set pressure difference is greater than or equal to the second set pressure difference.

4. The method for gas-liquid synergistic cleaning of a microbubble water mill handle according to claim 1, characterized in that, The method further includes: During the operation of the peristaltic pump, the control module accumulates the continuous operating time of the peristaltic pump in real time; When the continuous running time reaches the preset safety timeout period, and the actual negative pressure detection value is still greater than the skin-free stop threshold, the control module forcibly controls the peristaltic pump to stop running and outputs a safety warning signal.

5. The method for gas-liquid synergistic cleaning of a microbubble water mill handle according to claim 1, characterized in that, The step of delivering a measured amount of cleaning fluid, which mixes with a negative pressure airflow inside the water mill cleaning handle to form microbubbles and then acts on the outside, includes: The metered cleaning fluid delivered by the peristaltic pump enters the interior of the water mill cleaning handle and flows along a spiral guide surface with a preset spiral angle of 30°-60°; Under the shearing action of the spiral guide surface and the impact of the negative pressure airflow in the negative pressure pipeline, the quantitative cleaning liquid is physically broken up and mixed with the airflow to stably generate ultra-microbubbles with a particle size in the range of 50–150 μm.

6. The method for gas-liquid synergistic cleaning of a microbubble water mill handle according to claim 1, characterized in that, The control module controls the operation of the negative pressure vacuum pump to output an actual negative pressure of 40-70 kPa. The control module controls the peristaltic pump to deliver cleaning fluid to the water-milling cleaning handle in a metered range of 0.2-2 mL / s. The control module synchronously adjusts the output flow rate of the peristaltic pump and the negative pressure of the negative pressure vacuum pump according to the received cleaning command.

7. The method for gas-liquid synergistic cleaning of a microbubble water mill handle according to claim 1, characterized in that, After controlling the peristaltic pump to stop operating and interrupting the delivery of the cleaning fluid, the method further includes: By using a miniature check valve installed on the inlet pipe connecting the peristaltic pump and the water mill cleaning handle, the liquid flow in the inlet pipe is cut off by the reset closing of the miniature check valve at the instant the peristaltic pump stops running. By locking the liquid column in the inlet pipe, the residual cleaning fluid is prevented from flowing back into the water-milling cleaning handle or dripping outward due to gravity or negative pressure fluctuations.

8. The method for gas-liquid synergistic cleaning of a microbubble water mill handle according to claim 1, characterized in that, The steps of using a negative pressure vacuum pump to draw and recover waste liquids and dirt include: The pumped waste liquid and dirt enter the waste liquid collection device through the negative pressure pipeline, and are directly guided and settled into the bottom of the waste liquid collection device through the long conduit inserted at the top of the waste liquid collection device. Furthermore, the negative pressure vacuum pump evacuates the deflated air chamber at the top of the waste liquid collection device through a short conduit inserted into the top of the waste liquid collection device, thereby utilizing the physical separation of gas and liquid to prevent splashing droplets and water mist from being sucked into the negative pressure vacuum pump.

9. The method for gas-liquid synergistic cleaning of a microbubble water mill handle according to claim 1, characterized in that, The method further includes: When the control module receives a cleaning stop command, the control module controls the peristaltic pump to stop running and shuts down the negative pressure vacuum pump after a set delay time to evacuate the waste liquid and dirt remaining in the water-grind cleaning handle and negative pressure pipeline.

10. A small bubble water mill handle air-liquid synergistic cleaning device, characterized in that, The apparatus for using the microbubble water milling handle air-liquid synergistic cleaning method according to any one of claims 1 to 9, the apparatus comprising: The negative pressure establishment module, after receiving the start command, controls the negative pressure vacuum pump to start and establish a basic negative pressure in the negative pressure pipeline connecting the water mill cleaning handle and the negative pressure vacuum pump; The monitoring module and the control module acquire the actual negative pressure detection value in the negative pressure pipeline in real time through the pressure sensor. When the actual negative pressure detection value reaches or exceeds the preset skin-touch activation threshold, the control module controls the peristaltic pump to start, and delivers a quantitative amount of cleaning fluid into the water-polishing handle at a set flow rate. The cleaning module delivers a measured amount of cleaning liquid that mixes with negative pressure airflow inside the water-mill cleaning handle to form microbubbles that act on the outside. At the same time, the suction generated by the negative pressure vacuum pump draws in and recycles waste liquid and dirt. The liquid cut-off module, during the operation of the peristaltic pump, if the actual negative pressure detection value drops and is less than or equal to the preset skin-free stop threshold, the control module immediately controls the peristaltic pump to stop operating, interrupting the delivery of cleaning fluid.

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