A filter device for recycling rainwater into glass water

Abstract

The present application relates to vehicle glass water supply equipment technical field, especially relates to a kind of filter device for rainwater recycling as glass water, including the diversion system, double mode collection system, filtration system and processing system being sequentially arranged, diversion system includes diversion vane and diversion passage, diversion system is arranged at the water channel of lower edge of front windshield, diversion passage is the V type of opening upwards, diversion passage is provided with several interval arranged drainage gaps, diversion vane is the array of wing piece including several wing pieces, drainage passage is formed between each wing piece, diversion passage is communicated with filtration system by drainage gap;Processing system includes liquid storage bin, and liquid storage bin is connected with reagent bin and washing kettle.The present application can reduce the use of electric pump, and the ventilation cover plate of diversion system is simulated diversion vane, the shunt of rainwater and gas is realized, rainwater is driven into filtration system using pressure difference, and the rainwater storage rate is improved;V type diversion groove drives rainwater using airflow pressure difference, without additional pump.

Description

Technical Field

[0001] This invention relates to the field of vehicle windshield washer fluid supply equipment, and in particular to a filtration device for recycling rainwater into windshield washer fluid. Background Technology

[0002] Existing vehicle-mounted rainwater harvesting devices mostly use fixed filters, which suffer from low efficiency and susceptibility to clogging. The fixed, static filter structure causes rainwater to concentrate in the same area, resulting in excessive localized load on the filter. Accumulated impurities require frequent manual cleaning, affecting long-term stability. Furthermore, some devices rely on electric pumps to drive the water flow, increasing energy consumption and system complexity, and raising the failure rate, making them unsuitable for the high-efficiency, energy-saving requirements of vehicle environments.

[0003] Rainwater in the early stages of rainfall (the first 10-15 mm) contains a large number of pollutants, such as heavy metals, organic matter and acidic substances, which require targeted treatment. Traditional solutions, such as bioretention ponds or permeable materials, can intercept some pollutants, but cannot achieve in-situ purification and have high maintenance costs.

[0004] Furthermore, since rainwater contains suspended particulates (SS), oil, bacteria, and other pollutants, filtration systems typically use surfactants to remove them. Therefore, converting rainwater into windshield washer fluid also requires removing the surfactants from the rainwater. Additionally, antifreeze agents such as ethylene glycol or propylene glycol need to be added to the windshield washer fluid to cope with low-temperature environments. Traditional systems lack real-time water quality monitoring and automatic mixing functions, requiring users to manually adjust the ratio of original windshield washer fluid to rainwater. Moreover, the filter replacement cycle is opaque, making the system prone to clogging and failure. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: In order to overcome the above-mentioned technical problems, the present invention provides a rainwater recycling and reuse filter device for windshield washer fluid, which belongs to the intelligent car washing system with rainwater filtration function, and achieves systematic integration from four dimensions: structural design, filtration level, chemical treatment and fluid control.

[0006] The technical solution adopted by this invention to solve its technical problem is: a rainwater recycling and reuse filter device for windshield washer fluid, comprising a flow guiding system, a dual-mode collection system, a filtration system, and a treatment system arranged sequentially. The flow guiding system includes a flow guiding wing and a flow guiding channel. The flow guiding system is located at the water channel along the lower edge of the windshield. The flow guiding channel is an upward-opening V-shaped channel with a water drainage channel at the bottom of the V-shaped channel. The water drainage channel extends along the length of the flow guiding channel. Several spaced drainage gaps are provided in the flow guiding channel. The flow guiding wing is an array of winglets including several winglets, and each winglet has an airfoil profile. A drainage channel is formed between each winglet. Each winglet of the flow guiding wing is inclined relative to the water channel, tilted forward, and forms an acute angle with the airflow direction, so that rainwater / raindrops hitting the leading edge of the winglet are deflected downward. The winglet angle of attack α ranges from 15° to 30°, which is the angle between the winglet chord line and the plane of the car engine compartment cover. The angle should not be too small, so that impacting raindrops can be effectively deflected downwards into the drainage channel; nor should it be too large, otherwise it will increase aerodynamic drag and may generate large separation vortices on the leeward side of the vane, potentially entraining water. The vane height H is 30mm-50mm, depending on the space under the car's hood, the expected water flow intensity, and the requirements for airflow obstruction. The height needs to be sufficient to cover the main air intake path and effectively intercept rainwater; too high will increase drag and weight, while too low will result in poor interception; it should be higher than the depth of the guide channel. The vane width C matches the width of the drainage gap, and the spacing G between two adjacent vanes matches the spacing between two adjacent drainage gaps, so that one vane of the guide wing corresponds to one drainage gap, providing sufficient surface area to guide airflow and collect water. The width should be coordinated with the tilt angle height to ensure structural strength. The bottom of the drainage channel smoothly transitions to the opening of the guide channel, and the trailing edge root of the vane smoothly transitions to the top of the side wall of the guide channel to avoid creating dead zones for water accumulation. Ideally, the bottom edge of the drainage channel slightly extends into the opening of the guide channel, forming an "eaves" effect. Ensure the drainage channel has sufficient volume and slope to quickly drain collected water and prevent water accumulation at the root of the deflector. The root of the deflector's trailing edge is higher than the top of the side wall of the drainage channel, creating a height difference that allows raindrops to generate potential energy, facilitating better entry of rainwater into the drainage channel.

[0007] The flow channel is connected to the filtration system through a water inlet channel and a drainage gap. The dual-mode collection system is located within the flow channel and / or between the flow channel and the filtration system. The dual-mode collection system is used to intercept large particles in rainwater and automatically adjust the opening of the rainwater collection system according to the rain sensor signal. The processing system includes a liquid storage tank. The filtration system is connected to the liquid storage tank through an internal filtration liquid channel. The liquid storage tank is connected to a chemical tank and a washing pot.

[0008] The blades of the deflector are parallel to each other, and each blade is tilted in the same direction as the windshield. Each blade is tilted at an acute angle relative to the airflow direction at the water channel, so that rainwater / raindrops hitting the leading edge of the deflector are deflected downwards.

[0009] The leading edge of the airfoil is streamlined, similar to that of an airfoil, to smoothly cleave airflow and water droplets, reducing drag and splashing. The trailing edge of the guide wing is sharp to promote clean airflow separation and prevent the formation of drag vortices that suck in water droplets. The overall airfoil profile adopts a streamlined airfoil shape. The spacing G between two adjacent airfoils is 5-15mm. This spacing G is also the key channel for rainwater to drain into the guide channel. Its width ensures that water flow under the expected maximum rainfall can pass smoothly without clogging, while being as narrow as possible to reduce airflow bypasses that directly enter the air intake.

[0010] The guide vane has longitudinal grooves on its upper surface. The depth h of the longitudinal grooves is 0.1-0.5 mm and the width d is 0.5-1 mm. The longitudinal grooves extend from the leading edge of the vane to the root of the trailing edge.

[0011] The dual-mode collection system includes a main collection port filter and a secondary collection port guide vane. The main collection port filter is located on the guide channel, and the secondary collection port guide vane is located below the main collection port filter.

[0012] The main collection port filter screen is made of honeycomb stainless steel; the secondary collection port guide vane is an electric louvered guide vane that automatically adjusts its opening and closing degree according to the rain sensor signal.

[0013] The filtration system comprises, in sequence, a primary physical filtration system, a secondary physical filtration layer, and a chemical filtration layer. The primary physical filtration system includes a stainless steel rotating belt vibrating filter and a vibration motor, the vibration motor driving the stainless steel rotating belt vibrating filter to vibrate. The secondary physical filtration layer includes a gradient density PP cotton filter element and a nano-silver coating antibacterial layer. The chemical filtration layer is a composite filter module, which includes a cation exchange resin, activated carbon fiber cloth, and a zirconium phosphate silver-loaded antibacterial layer.

[0014] The processing system also includes a dynamic proportioning module, a chemical additive system, and a micro-flow metering pump. The dynamic proportioning module includes a three-way electromagnetic proportional valve and a water quality sensor array. The chemical additive system is used to control the addition of chemicals from the chemical tank to the liquid in the storage tank. The micro-flow metering pump is used to monitor the amount of chemicals added from the chemical tank to the storage tank. The three-way electromagnetic proportional valve is used to adjust the ratio of glass cleaner to collected rainwater. The water quality sensor array is used to monitor the liquid state at the outlet of the storage tank.

[0015] It also includes a fluid monitoring system, which includes a dual-redundant flow sensor, a pressure safety valve, and an emergency direct bypass. The dual-redundant flow sensor is a dual-redundant flow sensor that combines Hall effect and turbine characteristics.

[0016] The water quality sensor array includes a first array sensor and a second array sensor. The first array sensor and the second array sensor are respectively installed at the inlet and outlet of the liquid storage tank. The first array sensor and the second array sensor are used to monitor the rainwater status in real time. The outlet of the liquid storage tank is also provided with a circulation pipeline. An electronic water pump is installed on the circulation pipeline. One end of the circulation pipeline is connected to the outlet of the liquid storage tank, and the other end of the circulation pipeline is connected to the secondary filtration inlet of the filtration system.

[0017] The beneficial effects of this invention are as follows: This invention provides a rainwater recycling and filtration device for glass cleaner, aiming to collect and filter rainwater to meet usage standards. Furthermore, structural optimization reduces the need for an electric pump. The ventilation cover of the flow guiding system uses simulated flow guides to separate rainwater and gas, utilizing pressure difference to drive rainwater into the filtration system and increase the rainwater storage rate. The V-shaped flow guide channel utilizes airflow pressure difference to drive rainwater, eliminating the need for additional pumps. The filtration system and washing jug are integrated into a single design, with a total space of <2.5L. Real-time monitoring using sensors enables intelligent water management. The system features automatic addition of corrosion inhibitors, antifreeze, and other chemicals for water quality adjustment; a composite filtration system that simultaneously removes particulate matter, heavy metals, and organic pollutants from coarse to fine filtration; dynamic antibacterial action achieved through a nano-silver coating and silver-loaded zirconium phosphate dual-effect antibacterial technology; a vibration motor-driven stainless steel rotating belt that vibrates the filter screen for cleaning, extending the filter cartridge's lifespan; a three-way electromagnetic proportional valve that automatically switches between rainwater and glass cleaner based on environmental conditions and water quality, enabling precise allocation of dual water sources; and efficient use of redundant space in the flow channel by the primary filtration system and secondary collection port guide vanes. A filter cartridge replacement port is located on one side of the chemical filtration layer below the flow channel for convenient filter replacement. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a cross-sectional schematic diagram of the filtration and collection section of the filtration device for recycling rainwater into glass water according to the present invention.

[0020] Figure 2 This is a cross-sectional schematic diagram of the washing jug portion of the filtration device for recycling rainwater into glass water according to the present invention.

[0021] Figure 3 This is a schematic diagram of the flow guiding system in the rainwater recycling and glass water filtration device of the present invention. Figure 3 The dashed arrow indicates the direction of gas, and the solid arrow indicates the direction of rain.

[0022] Figure 4 This is a schematic diagram of the distribution structure of each blade in the guide vane of the rainwater recycling and glass water filtration device of the present invention.

[0023] Figure 5 This is a structural diagram of a single wing in a wing array.

[0024] In the diagram: 100, engine compartment cover; 200, windshield; 1, flow channel; 1-1, drainage gap; 1-2, water drop channel; 2, main collection port filter screen; 3, motorized louvered flow guide vane; 4, flow guide wing; 4-1, wing; 4-11, longitudinal groove; 4-2, drainage channel; 5, primary physical filtration system; 6, secondary physical filtration layer; 7, chemical filtration layer; 8, dual-redundancy flow sensor; 9, PTC heating element; 10, first array sensor; 11, liquid storage tank; 12, second array sensor; 13, reagent tank; 14, electronic water pump; 15, first three-way electromagnetic proportional valve; 16, second three-way electromagnetic proportional valve; 17, washer kettle DC bidirectional motor; 18, nozzle; 19, washer kettle; 20, washer kettle filling port; 21, filter replacement port; 22, secondary filtration inlet; 23, emergency direct bypass; 24, flow guide pipe. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0026] like Figure 1-2 As shown, a rainwater recycling and glass cleaning device of the present invention includes a flow guiding system, a dual-mode collection system, a filtration system and a treatment system arranged in sequence. Figure 1-2 In the middle, the flow guiding system includes a flow guiding wing 4 and a flow guiding channel 1. The flow guiding system is located at the lower edge of the windshield 200 at the water channel. The flow guiding channel 1 is a V-shaped channel with its opening facing upwards, and a water drop channel 1-2 is opened at the bottom of the V-shaped channel. Figure 4As shown, the drainage channel 1-2 extends along the length of the guide channel 1. Several spaced drainage gaps 1-1 are provided within the guide channel 1. The guide wing 4 is an array of winglets 4-1, each winglet 4-1 having an airfoil profile. Drainage channels 4-2 are formed between the winglets 4-1. Each winglet 4-1 of the guide wing 4 is inclined relative to the water channel, tilting forward at an acute angle to the airflow direction, causing rainwater / droplets hitting the leading edge of the winglet 4-1 to deflect downwards. The angle of attack α of the winglet 4-1 ranges from 15° to 30°, which is the angle between the chord line of the winglet 4-1 and the plane of the vehicle engine plate 100. The angle cannot be too small, so that impacting raindrops can be effectively deflected downwards into drainage channel 4-2; nor can it be too large, otherwise it will increase aerodynamic drag and may generate large separation vortices on the leeward side of wing 4-1, potentially entraining water flow. 20°-25° is a common starting point for achieving a relative balance between separation efficiency and drag. The final angle needs to be determined based on CFD / wind tunnel or water tunnel tests. The height H of wing 4-1 is 30mm-50mm, depending on the space below the car hood 100, the expected water flow intensity, and the requirements for airflow obstruction. The height needs to be sufficient to cover the main air intake path and effectively intercept rainwater; too high will increase drag and weight, while too low will result in poor interception. It should be higher than the depth of the guide channel. The width C of the vane 4-1 matches the width of the drainage gap 1-1, and the spacing G between two adjacent vanes 4-1 matches the spacing between two adjacent drainage gaps 1-1, so that one vane 4-1 of the guide vane 4 corresponds to one drainage gap 1-1, providing sufficient surface area to guide airflow and collect water. The width should be coordinated with the tilt angle height to ensure structural strength. The bottom of the drainage channel 4-2 smoothly transitions to the opening of the guide channel 1, and the root of the trailing edge of the vane 4-1 smoothly transitions to the top of the side wall of the guide channel 1 to avoid creating dead corners for water accumulation. Ideally, the bottom edge of the drainage channel 4-2 extends slightly into the opening of the guide channel 1, forming an "eaves" effect. Ensure that the guide channel 1 has sufficient volume and slope to quickly drain the collected water and prevent water accumulation at the root of the vane 4-1. The root of the trailing edge of the vane 4-1 is higher than the top of the side wall of the guide channel 1, creating a height difference that allows raindrops to generate potential energy, facilitating better entry of rainwater into the guide channel 1. In this embodiment, the vane 4-1 is generally higher than the top of the side wall of the guide channel 1. Of course, the position of the vane 4-1 is not limited to this, as long as it allows raindrops to fall from the vane 4-1 into the guide channel 1 and generate potential energy. Figure 4 H1 represents the airflow channel height. Based on the actual hood height, and assuming a 50mm gap, the channel height needs to be 35mm to ensure smooth airflow. β represents the V-groove angle. Ideally, the V-groove design should have an equilateral triangle profile with all three angles at 60°. Figure 4The angle β at the bottom is indicated by the symbol. This angle range allows water flow to converge, reducing water accumulation in the guide channel 1. R is the radius of the connecting arc, which is the radius of the arc formed by the smooth transition between the trailing edge root of the vane 4-1 and the top of the side wall of the guide channel 1, preferably 3mm. The height H of the vane 4-1 is preferably 40mm; the depth H2 of the guide channel 1 is preferably 10mm; the width C of the vane 4-1 is preferably 20mm; the distance G between two adjacent vanes 4-1, which is also the width of the drainage channel 4-2, is preferably 10mm. The angle of attack α of the vane 4-1 is preferably 25°.

[0027] like Figure 1 As shown, the flow channel 1 is connected to the filtration system via the water discharge channel 1-2 and the drainage gap 1-1. The dual-mode collection system is located within the flow channel system and / or between the flow channel system and the filtration system. In this embodiment, the main collection port filter 2 of the dual-mode collection system is located within the flow channel system, specifically within the flow channel 1, while the secondary collection port guide plate is located between the flow channel system and the filtration system. Figure 1 The dual-mode collection system includes a main collection port filter 2 and a secondary collection port guide vane. The main collection port filter 2 is located on the guide channel 1, and the secondary collection port guide vane is located below the main collection port filter 2. The main collection port filter 2 is a honeycomb stainless steel filter screen 2 with a pore size of 0.5mm, used to intercept large particles. The secondary collection port guide vane is an electrically operated louvered guide vane 3, which automatically adjusts its opening and closing degree according to the rain sensor signal.

[0028] The dual-mode collection system is used to intercept large particles in rainwater and automatically adjusts the rainwater collection opening based on rain sensor signals; such as Figure 2 As shown, the processing system includes a liquid storage tank 11, and a filtration system is connected to the liquid storage tank 11 through an internal filtration liquid channel. The liquid storage tank 11 is connected to a reagent tank 13 and a washing pot 19.

[0029] Figure 4In the design, the blades 4-1 of the guide vane 4 are parallel to each other, and each blade 4-1 is tilted in the same direction as the windshield 200. Each blade 4-1 is tilted at an acute angle relative to the airflow direction at the drainage channel, causing rainwater / droplets hitting the leading edge of the guide vane 4 to deflect downwards. The leading edge of the blade 4-1 is streamlined, similar to the leading edge of an airfoil, to smoothly cleave the airflow and water droplets, reducing drag and splashing. The trailing edge of the blade 4-1 of the guide vane 4 is sharp to promote clean airflow separation and prevent the formation of dragging vortices that suck up water droplets. The overall cross-section of the blade 4-1 adopts a symmetrical or nearly symmetrical airfoil. The distance G between two adjacent blades 4-1 is 5-15 mm. This distance G, which is also the drainage channel 4-2, is the key channel for rainwater to drain into the guide channel 1. Its width ensures that the water flow under the expected maximum rainfall can pass smoothly without clogging, while being as narrow as possible to reduce airflow bypasses that directly enter the air intake. The guide vane 4 has fine longitudinal grooves 4-11 on the upper surface (windward side) of the vane 4-1. The longitudinal grooves 4-11 extend into the thickness direction of the vane 4-1 to a depth h of 0.1-0.5 mm and a width d of 0.5-1 mm, and extend from the leading edge to the root of the trailing edge of the vane 4-1. The shape of the longitudinal grooves 4-11 mimics the veins of a plant leaf or the grooves of a fish scale. The longitudinal grooves 4-11 can effectively guide the water flow downward along the surface of the vane 4-1 into the drainage channel 4-2 and the guide channel 1, preventing the water film from being torn away by the airflow after it spreads over a large area.

[0030] The filtration system, in filtration sequence, includes a primary physical filtration system (5), a secondary physical filtration layer (6), and a chemical filtration layer (7). The primary physical filtration system (5) comprises a stainless steel rotating belt vibrating filter and a vibration motor. The motor drives the stainless steel rotating belt vibrating filter to vibrate. The stainless steel rotating belt vibrating filter uses 50-mesh 304 stainless steel and is equipped with a miniature vibration motor that automatically cleans itself after 30 minutes of cumulative operation. The secondary physical filtration layer (6) includes a gradient-density PP cotton filter element and a nano-silver coating antibacterial layer. The density gradient of the PP cotton filter element is 10μm→5μm→1μm, and the Ag+ release of the nano-silver coating antibacterial layer is 0.08mg / L·h. The chemical filtration layer (7) is a composite filter module, which includes cation exchange resin, activated carbon fiber cloth, and a zirconium phosphate silver-loaded antibacterial layer. The composite filter module is replaceable. The cation exchange resin is used to treat heavy metals, and the activated carbon fiber cloth has a VOC adsorption rate ≥98%.

[0031] The processing system also includes a dynamic proportioning module, a chemical additive system, and a micro-flow metering pump. The dynamic proportioning module includes a three-way electromagnetic proportional valve and a water quality sensor array. The chemical additive system controls the addition of chemicals from the reagent tank 13 to the liquid in the storage tank 11. The micro-flow metering pump monitors the amount of chemicals added from the reagent tank 13 to the storage tank 11. The three-way electromagnetic proportional valve regulates the ratio of glass cleaner to collected rainwater. The water quality sensor array monitors the liquid state at the inlet and outlet of the storage tank 11. A PTC heating element 9 can also be installed to heat the liquid and prevent freezing in cold weather. The three-way electromagnetic proportional valve has an accuracy of ±1.5%. The water quality sensor array enables real-time monitoring of the TDS / pH / conductivity of the liquid in the storage tank 11. The PTC heating element 9 is designed to start normally at -20℃, heating the liquid in the storage tank 11 to achieve anti-crystallization.

[0032] It also includes a fluid monitoring system, comprising a dual-redundant flow sensor 8, a pressure safety valve, and an emergency bypass 23. The dual-redundant flow sensor 8 is a combination of Hall effect and turbine sensors, and the pressure safety valve has a burst pressure of 2.5 MPa. When the filter element becomes clogged, the emergency bypass 23 automatically opens to achieve emergency bypass mode. It also includes a rain sensor and an intelligent control system. The intelligent control system includes a CAN bus integrated module and a human-machine interface. The CAN bus integrated module enables signal linkage with the rain sensor, with a frequency ≥10Hz, and includes an ambient temperature compensation algorithm designed for temperatures ranging from -30℃ to 50℃. It also includes a residual reagent prediction system M algorithm. The human-machine interface visualizes the filter element's lifespan through color gradient indicators, offers multiple modes (Smart / Economy / Winter / High Power), and uses a capacitive touchscreen with IP67 protection.

[0033] The water quality sensor array includes a first array sensor 10 and a second array sensor 12, which are respectively installed at the inlet and outlet of the storage tank 11. The first array sensor 10 and the second array sensor 12 monitor the rainwater status in real time. A circulation pipe is also provided at the outlet of the storage tank 11, and an electronic water pump 14 is installed on the circulation pipe. One end of the circulation pipe is connected to the outlet of the storage tank 11, and the other end is connected to the secondary filtration inlet 22 of the filtration system. The washing jug 19 is driven to spray water by a DC bidirectional motor 17, and the prepared glass cleaner is sprayed out from the nozzle 18.

[0034] When the vehicle performs its rainwater collection function, rainwater and airflow simultaneously impact the drainage channel cover. Most of the airflow enters the drainage channel through the guide vanes 4, while most of the rainwater enters the filtration device of this invention through the guide channel 1. This process requires separating the rainwater and airflow. The guide vanes 4 of this invention employ a biomimetic architecture, simulating the airflow field impact of an airfoil. The airflow enters the drainage channel through the guide vanes, serving two purposes: firstly, to provide a pressure difference for the rainwater to achieve pump-free operation; secondly, to reduce airflow vortex in the guide channel 1, preventing cyclones from forming in front of the guide channel 1, which would affect the rainwater collection rate and reduce filtration efficiency.

[0035] The contact medium component of this invention is made of PPSU material with a chemical resistance of UL94 V-0; the seal is made of fluororubber (FKM).

[0036] The MCU (Microcontroller Unit) receives rainfall signals from the BCM (Body Control Module) and controls the opening degree of the electric louvered air deflector 3. The MCU also receives outdoor temperature sensor signals from the VCU (Vehicle Control Unit). When the temperature is -20℃, the MCU sends a start signal to the PTC heating element 9. The chemical tank 13 interacts with the controller via a LIN signal to achieve precise dispensing of chemical additives. Sensor monitoring signals are transmitted to the MCU via hardwired signals. Once the MCU receives the signal, it activates the actuator via a hardwired / CAN bus signal. The actuator includes an electronic water pump 14, a three-way solenoid proportional valve, the chemical tank 13, and a DC bidirectional motor 17 for the washer fluid reservoir. Simultaneously, the MCU checks the status of the chemical tank 13 and the filter element, which is displayed on the capacitive touchscreen.

[0037] The rain sensor defines the amount of rainfall based on its refractive index. When the refractive index of the rain sensor reaches the defined standard, the motorized louvered deflector 3 is open, allowing rainwater to pass through the deflector channel 1 and flow into the main collection port filter 2 for initial filtration of large particles via the external receiving liquid channel. Conversely, when the refractive index of the rain sensor is low, the motorized louvered deflector 3 is closed. The rainwater, after initial treatment, then passes through the open motorized louvered deflector 3 and enters the primary physical filtration system 5 through the internal filtering liquid channel. During this process, the primary physical filtration system 5 uses a stainless steel rotating belt vibrating filter to further filter the rainwater. The vibration motor operates every 30 minutes to prevent filter clogging. If the stainless steel rotating belt vibrating filter becomes clogged, rainwater reaching a certain level will be discharged into the drainage trough through the emergency bypass 23, draining the rainwater outside the vehicle. After this, the rainwater flows through the internal filtering liquid channel into the secondary physical filtration layer 6. This filtration layer uses a gradient density PP cotton filter element with a nano-silver antibacterial coating. After filtration, rainwater enters the chemical filtration layer 7 through the internal filtration liquid channel, where heavy metals, volatile organic compounds, bacteria, fungi, and viruses are adsorbed and filtered. After multiple layers of filtration, the rainwater is ready for use. The liquid is now stored in the storage tank 11. The rainwater's status is monitored in real time by a dual-redundancy flow sensor 8, a PTC heating element 9, and the first array sensor 10 and second array sensor 12 before and after the storage tank 11. The chemical tank 13 adds chemicals to the liquid in the storage tank 11, including antifreeze and corrosion inhibitors. After the chemicals are added, the liquid status at the outlet of the storage tank 11 is monitored by the second array sensor 12. If the usage conditions are met, such as TDS and pH values, the liquid enters the second three-way electromagnetic proportional valve 16 through the first three-way electromagnetic proportional valve 15, dynamically mixing the filtered liquid with the windshield washer fluid in the washer jug ​​19. The washer jug's DC bidirectional motor 17 then sprays the prepared windshield washer fluid from the nozzle 18. If the usage conditions are not met, such as TDS or pH value not meeting the standard, the liquid will enter the secondary circulation liquid channel through the first three-way electromagnetic proportional valve 15, and the liquid will be transported to the secondary filtration inlet 22 of the primary physical filtration system by the electronic water pump 14 for filtration and circulation again. At this point, the scheme completes a complete operation process.

[0038] Figure 1 and Figure 2 The diagram shows a cross-sectional view of the entire structure of the rainwater recycling and glass washer filter device of the present invention. Figure 1 This is a front Y-section view from the driver's driving direction. Figure 4This is a top view from the passenger side. When the vehicle is performing rainwater collection, rainwater and airflow simultaneously impact the drainage channel cover. Most of the airflow enters the drainage channel through the guide vane 4, while most of the rainwater enters the filtration device through the guide channel 1. This process requires separating the rainwater and airflow. In this invention, the guide vane 4 adopts a biomimetic architecture to simulate the impact of the airflow field of an airfoil. The airflow enters the drainage channel through the guide vane, which serves two purposes: first, to provide a pressure difference for the rainwater to achieve pump-free operation; and second, to reduce airflow swirl in the guide channel 1, preventing cyclones from forming in front of the guide channel 1, which would affect the rainwater collection rate and reduce filtration efficiency.

[0039] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A filtration device for recycling rainwater into glass cleaner, characterized in that, The system includes a flow guiding system, a dual-mode collection system, a filtration system, and a treatment system arranged sequentially. The flow guiding system includes a flow guiding wing (4) and a flow guiding channel (1). The flow guiding system is located at the bottom of the windshield (200) along the water channel. The flow guiding channel (1) is a V-shaped channel with its opening facing upwards. A water discharge channel (1-2) is opened at the bottom of the V-shaped channel. The water discharge channel (1-2) extends along the length of the flow guiding channel (1). Several drainage gaps (1-1) are opened in the flow guiding channel (1) at intervals. The flow guiding wing (4) is an array of winglets including several winglets (4-1). The winglets (4-1) have an airfoil profile. A drainage channel (4-2) is formed between each winglet (4-1). Each winglet (4-1) of the flow guiding wing (4) is inclined relative to the water channel. The angle of attack α of the winglet (4-1) is in the range of 15°-30°. The height H of the winglet (4-1) is 30mm-50mm. The width C of the wing (4-1) matches the width of the drainage gap (1-1), and the distance G between two adjacent wing pieces (4-1) matches the distance between two adjacent drainage gaps (1-1), so that one wing piece (4-1) of the guide wing (4) corresponds to one drainage gap (1-1). The bottom of the drainage channel (4-2) smoothly transitions to the opening of the guide channel (1). The root of the trailing edge of the wing piece (4-1) smoothly transitions to the top of the side wall of the guide channel (1), and the root of the trailing edge of the wing piece (4-1) is higher than the top of the side wall of the guide channel (1). The flow channel (1) is connected to the filtration system through the water drop channel (1-2) and the drainage gap (1-1). The dual-mode collection system is set inside the flow channel and / or between the flow channel and the filtration system. The processing system includes a liquid storage tank (11). The filtration system is connected to the liquid storage tank (11) through an internal filtration liquid channel. The liquid storage tank (11) is connected to a medicine tank (13) and a washing pot (19).

2. The rainwater recycling and glass cleaning filter device as described in claim 1, characterized in that, The blades (4-1) of the air guide (4) are parallel to each other, the blades (4-1) are tilted in the same direction as the windshield (200), and the blades (4-1) are tilted at an acute angle relative to the airflow direction at the water channel.

3. The rainwater recycling and glass cleaning filter device as described in claim 1, characterized in that, The leading edge of the wing (4-1) is streamlined, and the trailing edge of the wing (4-1) of the guide wing (4) is sharp; the overall cross-section of the wing (4-1) adopts a streamlined airfoil; the distance G between two adjacent winglets (4-1) is 5-15mm.

4. A filtration device for recycling rainwater into glass cleaner as described in claim 1, characterized in that, The guide vane (4) has a longitudinal groove (4-11) on the upper surface of the vane (4-1). The depth h of the longitudinal groove (4-11) is 0.1-0.5 mm and the width d is 0.5-1 mm. The longitudinal groove (4-11) extends from the leading edge of the vane (4-1) to the root of the trailing edge.

5. A filtration device for recycling rainwater into glass cleaner as described in claim 1, characterized in that, The dual-mode collection system includes a main collection port filter (2) and a secondary collection port guide plate. The main collection port filter (2) is located on the guide channel (1), and the secondary collection port guide plate is located below the main collection port filter (2).

6. A filtration device for recycling rainwater into glass cleaner as described in claim 5, characterized in that, The main collection port filter (2) is a honeycomb stainless steel filter; the secondary collection port guide vane is an electric louvered guide vane (3), which automatically adjusts the opening and closing degree according to the rain sensor signal.

7. A filtration device for recycling rainwater into glass cleaner as described in claim 1, characterized in that, The filtration system includes, in order of filtration sequence, a primary physical filtration system (5), a secondary physical filtration layer (6), and a chemical filtration layer (7). The primary physical filtration system (5) includes a stainless steel rotating belt vibrating filter and a vibration motor. The vibration motor drives the stainless steel rotating belt vibrating filter to vibrate. The secondary physical filtration layer (6) includes a gradient density PP cotton filter element and a nano silver coating antibacterial layer; the chemical filtration layer (7) is a composite filter element module, which includes a cation exchange resin, activated carbon fiber cloth and a zirconium phosphate silver-loaded antibacterial layer.

8. A filtration device for recycling rainwater into glass cleaner as described in claim 1, characterized in that, The processing system also includes a dynamic proportioning module, a chemical additive system, and a micro-flow metering pump. The dynamic proportioning module includes a three-way electromagnetic proportional valve and a water quality sensor array. The chemical additive system is used to control the addition of chemicals from the chemical tank (13) to the liquid in the storage tank (11). The micro-flow metering pump is used to monitor the amount of chemicals added from the chemical tank (13) to the storage tank (11). The three-way electromagnetic proportional valve is used to adjust the ratio of glass water to collected rainwater. The water quality sensor array is used to monitor the liquid state at the inlet and outlet of the storage tank (11).

9. A filtration device for recycling rainwater into glass cleaner as described in claim 1, characterized in that, It also includes a fluid monitoring system, which includes a dual-redundant flow sensor (8), a pressure safety valve and an emergency direct bypass (23). The dual-redundant flow sensor (8) is a dual-redundant flow sensor (8) that combines Hall effect and turbine.

10. A filtration device for recycling rainwater into glass cleaner as described in claim 8, characterized in that, The water quality sensor array includes a first array sensor (10) and a second array sensor (12). The first array sensor (10) and the second array sensor (12) are respectively installed at the inlet and outlet of the liquid storage tank (11). The first array sensor (10) and the second array sensor (12) monitor the rainwater status in real time. The outlet of the liquid storage tank (11) is also provided with a circulation pipeline. An electronic water pump (14) is installed on the circulation pipeline. One end of the circulation pipeline is connected to the outlet of the liquid storage tank (11), and the other end of the circulation pipeline is connected to the secondary filtration inlet (22) of the filtration system.

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