Cleaning device for window and window
By designing a cleaning device for viewing windows, the hydrophobic material layer is heated by using a heater to make it flow out through the porous material layer, solving the problems of low heating efficiency and high energy consumption in the prior art, and achieving efficient defog and self-cleaning effects.
Patent Information
- Application Number
- CN202421048004.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-05-14
AI Technical Summary
The existing method of defogging windows by heating fans has problems such as low heating efficiency and high energy consumption.
A cleaning device for viewing windows is designed, including a transparent substrate, a heater, a layer of hydrophobic material and a layer of porous material. The hydrophobic material layer is heated by a heater, so that it melts out and flows out through the channels of the porous material layer to achieve defog and self-cleaning effects.
The device can directly heat the hydrophobic material layer, reduce heat loss, improve energy utilization and cleaning efficiency, and avoid the problems of low heating efficiency and large energy consumption in the prior art.
Smart Images
Figure CN222659527U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of window cleaning, and in particular to a cleaning device for a window and a window. Background Art
[0002] As an important component of devices such as cameras, the window has a significant impact on the clarity and brightness of optical imaging. When used in an environment with high humidity or large temperature differences, the outer surface of the window (the surface facing the external environment) is prone to fogging or icing, which affects the normal use of the window.
[0003] In order to solve the problem of ice and fog on the window surface, currently, the main method is to blow preheated air to the window surface through a heating fan, etc., to heat it so that the ice on the window surface melts into water and the water (fog) evaporates due to heat, thereby achieving the purpose of deicing and defogging. The existing heating fan is usually arranged inside the device and heats the inner surface of the window (the surface opposite to the outer surface). The ice on the outer surface of the window can be melted or the fog can be evaporated only after the window becomes hot. The heating efficiency is low and a large amount of energy is consumed. Utility Model Content
[0004] The present application discloses a cleaning device for a window and a window to solve the problems of low heating efficiency and high energy consumption in the existing window defogger using a heating fan or the like.
[0005] In order to achieve the above objectives, this application provides the following technical solutions:
[0006] In a first aspect, the present application provides a cleaning device for windows, which includes a transparent substrate, a heater, a hydrophobic material layer and a porous material layer; the hydrophobic material layer is arranged on one side of the substrate, the heater is arranged between the substrate and the hydrophobic material layer, and at least part of the porous material layer is arranged on the surface of the hydrophobic material layer facing away from the substrate; wherein the porous material layer has a plurality of channels, the opening at one end of the channel faces the hydrophobic material layer, and the opening at the other end of the channel faces away from the hydrophobic material layer, and the heater is used to heat the hydrophobic material layer so that at least part of the hydrophobic material in the hydrophobic material layer melts and flows out through the channel.
[0007] Furthermore, the cleaning device also includes a transparent fluid and a control unit, wherein the control unit is configured to control the transparent fluid to switch between at least two states, one of the at least two states is that the transparent fluid does not block the openings of the multiple channels away from the hydrophobic material layer, and the other of the at least two states is that the transparent fluid blocks at least part of the openings of the multiple channels away from the hydrophobic material layer.
[0008] Furthermore, the transparent fluid is a magnetic fluid, and the control unit is a conductive winding; the conductive winding is arranged along the circumference of the hydrophobic material layer so that a magnetic field is generated when the conductive winding is energized; the magnetic fluid is arranged along the circumference of the porous material layer and is higher than the porous material layer, so that the magnetic fluid diffuses to the surface of the porous material layer away from the hydrophobic material layer under the action of the magnetic field.
[0009] Furthermore, the conductive winding includes multiple layers of coil layers and insulating layers alternately stacked, the surface of the conductive winding close to the substrate is the coil layer, and the surface of the conductive winding away from the substrate is the insulating layer; the insulating layer is provided with a hollow, and the hollow penetrates the insulating layer along the thickness direction of the insulating layer, and any two adjacent coil layers are electrically connected by a connecting part, and the connecting part penetrates the hollow.
[0010] Furthermore, the cleaning device also includes a hydrophilic material layer, which is arranged on the edge of the hydrophobic material layer away from the substrate surface to prevent the magnetic fluid from diffusing to the surface of the porous material layer when there is no magnetic field.
[0011] Furthermore, the hydrophobic material layer includes N stacked hydrophobic layers, wherein N is a positive integer greater than or equal to 2, and the hydrophobic layer includes at least two target sublayers with different melting points, and the melting points of at least two target sublayers gradually decrease along the direction of the substrate toward the hydrophobic material layer.
[0012] Furthermore, the melting point of the hydrophobic material layer is 40-100°C.
[0013] Further, the heater includes at least one of a silver nanowire layer, indium tin oxide and a printed circuit; and / or the preparation material of the hydrophobic material layer includes at least one of 1,2-diphenylethane, n-docosane, n-tetracosane, n-octacosane, n-triacontane, n-dotriacontane, n-tetratriacontane, n-tetratriacontane, n-octatriacontane, n-tetracontane, n-tetracontane, n-tetracontane, n-tetracontane, n-tetracontane.
[0014] Furthermore, the substrate is made of a material including at least one of polycarbonate (PC), polymethylmethacrylate (PMMA) and glass.
[0015] In a second aspect, the present application provides a window, which includes a window body and the cleaning device of the first aspect, wherein a substrate is disposed on a surface of the window body, and a heater is located on a side of the substrate away from the window body.
[0016] Furthermore, the window body includes an imaging area, the cleaning device includes a transparent area, the transparent area is made of a transparent material, and the orthographic projection of the imaging area on the cleaning device at least partially overlaps with the transparent area.
[0017] The cleaning device provided by the present application, wherein the substrate is arranged on the surface of the window glass, when the window needs to be cleaned, first, the hydrophobic material layer is heated by a heater, and at least part of the material in the hydrophobic material layer is melted by heat to become a hydrophobic liquid, and the hydrophobic liquid can flow out through the through holes of the porous material layer and diffuse to the surface of the window glass, and when the water droplets in the mist contact the surface of the hydrophobic material, they will form a ball and roll down, taking away the dirt at the same time, thereby achieving the demisting and self-cleaning effect, and at the same time, because the water droplets cannot stay on the glass surface, the formation of frost will also be suppressed. Compared with the existing method of demisting the window by a heating fan, the cleaning device can directly heat the hydrophobic material layer, and the heat does not need to be transferred through the window glass, reducing heat loss, and the amount of hydrophobic material used can be controlled according to actual needs, effectively improving energy utilization and cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic structural diagram of a cleaning device according to an embodiment of the present application;
[0019] Figure 2 A schematic structural diagram of a cleaning device according to another embodiment of the present application;
[0020] Figure 3 This is a schematic structural diagram of a cleaning device according to another embodiment of the present application;
[0021] Figure 4 This is a schematic structural diagram of a cleaning device in a non-cleaning state according to an embodiment of the present application;
[0022] Figure 5 This is a schematic structural diagram of a cleaning device in a cleaning state according to an embodiment of the present application;
[0023] Figure 6 A side view of a conductive winding according to an embodiment of the present application;
[0024] Figure 7 A top view of a conductive winding according to an embodiment of the present application;
[0025] Figure 8 A schematic diagram of the structure of a coil layer of a conductive winding according to an embodiment of the present application;
[0026] Fig. 9 This is a schematic structural diagram of an insulating layer of a conductive winding according to an embodiment of the present application;
[0027] Fig.10 This is a structural schematic diagram of a cleaning device in another embodiment of the present application in a non-cleaning state;
[0028] Fig.11This is a schematic structural diagram of a cleaning device in another embodiment of the present application in a cleaning state;
[0029] Fig.12 This is a SEM image of a porous material layer according to an embodiment of the present application;
[0030] Fig.13 A schematic diagram of the structure of a window according to an embodiment of the present application.
[0031] Figure Number:
[0032] 100-substrate; 200-heater; 300-hydrophobic material layer; 310-hydrophobic layer; 400-porous material layer; 500-conductive winding; 510-coil layer; 520-insulating layer; 530-connecting part; 540-first connecting area; 550-second connecting area; 560-first wire; 570-second wire; 600-magnetic fluid; 700-hydrophilic material layer; 800-window body; 810-imaging area;
[0033] 01-Transparent area. DETAILED DESCRIPTION
[0034] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0035] As an important component of equipment such as cameras, when the window is used in an environment with high humidity or large temperature difference, the outer surface of the window (the surface facing the external environment) is prone to fogging or icing, resulting in unclear images, thus affecting the normal use of the window. The current mainstream anti-fog measure is to blow preheated air to the window surface through a heating fan, etc., and heat it to melt the ice on the window surface into water, and the moisture (fog) evaporates due to heat, thereby achieving the purpose of deicing and defogging. The existing heating fan is usually installed inside the device and heats the inner surface of the window (the surface opposite to the outer surface). The ice on the outer surface of the window can only be melted or the fog evaporated after the window becomes hot. There are problems such as unconcentrated heat, poor heating effect, and large energy consumption.
[0036] In view of this, an embodiment of the present application provides a cleaning device for a window. Figure 1 This is a schematic diagram of the structure of a cleaning device according to an embodiment of the present application. Figure 1The cleaning device includes a transparent substrate 100, a heater 200, a hydrophobic material layer 300 and a porous material layer 400; the hydrophobic material layer 300 is arranged on one side of the substrate 100, the heater 200 is arranged between the substrate 100 and the hydrophobic material layer 300, and at least part of the porous material layer 400 is arranged on the surface of the hydrophobic material layer 300 away from the substrate 100; wherein the porous material layer 400 has a plurality of channels, the opening at one end of the channel faces the hydrophobic material layer 300, and the opening at the other end of the channel faces away from the hydrophobic material layer 300, and the heater 200 is used to heat the hydrophobic material layer 300 so that at least part of the hydrophobic material in the hydrophobic material layer 300 melts and flows out through the channel.
[0037] The porous material layer includes a plurality of holes, each hole can be used as an independent channel, or two or more holes can be interconnected to form a larger channel. Optionally, the hole diameter is less than or equal to 1 μm.
[0038] Optionally, the porous material layer is prepared from at least one of anodized aluminum oxide (anodicaluminum oxide, AAO), porous silica, and porous silica glass (porous silica glass, PSG).
[0039] Optionally, the substrate is made of at least one of polyester film (polyethyleneterephthalate, PET), polycarbonate (polycarbonate, PC), polymethyl methacrylate (polymethylmethacrylate, PMMA) and glass.
[0040] When the cleaning device in the present application is used to clean the window, the substrate can be fixed to the surface of the window by bonding or the like, and the cleaning device can be fixed to the inner surface and / or outer surface of the window according to actual needs. Herein, the cleaning device is arranged on the outer surface of the window as an example for explanation, and the cleaning device can cover the entire surface of the window or only part of the surface of the window, and the specific position is selected according to actual conditions. It is understandable that the cleaning device cannot block the imaging area of the window, and the cleaning device can be arranged in the non-imaging area of the window, or at least part of the area of the cleaning device (corresponding to the imaging area of the window) is made of transparent material.
[0041] The cleaning device can be installed at a certain position and in a certain number on the window as required, and can be easily assembled and disassembled. When a problem occurs with the cleaning device or the hydrophobic material needs to be supplemented, only the cleaning device needs to be replaced.
[0042] Of course, in some application scenarios, it is inconvenient to replace the cleaning device, and the substrate can also be directly a window.
[0043] It is understandable that the shape of the heater is not limited in the present application, as long as it can heat the hydrophobic material layer. On the basis of easy processing, the volume of the heater is small to occupy less space. For example, Figure 1 As shown, the heater 200 can cover the entire surface of the substrate 100. Its advantage is that the heating area is large and the entire surface of the hydrophobic material layer 300 facing the substrate 100 can be evenly heated. In the above implementation, the porous material layer 400 and the heater 200 are surrounded to form a chamber for accommodating the hydrophobic material layer 300.
[0044] Optional, such as Figure 2 As shown, the heater 200 may also only cover part of the surface of the substrate 100 , such as a ring-shaped heating structure or a rectangular heating structure provided on the basic surface. In the above implementation, the porous material layer 400 and the substrate 100 are surrounded to form a chamber for accommodating the hydrophobic material layer 300 .
[0045] Wherein, the heater includes at least one of a silver nanowire layer, indium tin oxide (ITO) and a printed circuit. Exemplarily, when the heater is a silver nanowire layer, the diameter of the silver wire constituting the silver nanowire layer is 10-100nm, and the aspect ratio is 100-1000. It is understandable that the preparation method of the silver nanowire layer is not limited in the present application. Specifically, the preparation method of the silver nanowire layer may be an alcohol thermal method, a hydrothermal method, etc. Exemplarily, a silver nanowire layer is obtained by coating a silver nanowire ink on the surface of a substrate and performing a drying treatment. Wherein, the concentration of silver nanowires in the silver nanowire ink is 0.01-0.5%; the drying treatment temperature is 40-180°C; and the drying treatment time is 5-60min.
[0046] In an optional solution of the embodiment of the present application, the melting point of the hydrophobic material layer is 40-100°C, which is lower than the boiling point of water, and can reduce energy consumption compared to evaporating the mist. Specifically, the melting point of the hydrophobic material layer is 40°C, 50°C, 60°C, 70°C, 80°C, 90°C, 100°C or any other value between 40-100°C.
[0047] Preferably, the preparation material of the hydrophobic material layer is a super hydrophobic material. Exemplarily, the preparation material of the hydrophobic material layer includes 1,2-diphenylethane (melting point 52 ° C), n-docosane (melting point 60 ° C), n-tetracosane (melting point 79 ° C) n-octacosane (melting point 50 ° C), n-triacontane (melting point 66 ° C), n-triacontane (melting point 61 ° C), n-triacontane (melting point 55 ° C), n-triacontane (melting point 70 ° C), n-triacontane (melting point 78 ° C), n-tetracontane (melting point 84 ° C), n-tetracontane (melting point 86 ° C), n-tetracontane (melting point 92 ° C), n-tetracontane (melting point 100 ° C) at least one. Among them, the preparation material of the hydrophobic material layer is a transparent material to avoid affecting the function of the window.
[0048] In order to further achieve precise control of the amount of hydrophobic material melted in the hydrophobic material layer during the defogging process, Figure 3 This is a schematic diagram of the structure of a cleaning device according to another embodiment of the present application. Figure 3 The hydrophobic material layer 300 includes N layers of hydrophobic layers 310 stacked together, wherein N is a positive integer greater than or equal to 2, and the hydrophobic layer 310 includes at least two target sublayers with different melting points, and the melting points of at least two target sublayers gradually decrease along the direction from the substrate 100 to the hydrophobic material layer 300. Therefore, when the hydrophobic material layer 300 is heated, the target sublayer away from the substrate 100 has a lower melting point, and it can first melt into liquid and flow out through the channel. By adjusting the heating temperature, different target sublayers can be melted in sequence, thereby adjusting the amount of hydrophobic material used to meet the defogging requirements as accurately as possible and avoid energy waste.
[0049] It is understandable that the melting points of different hydrophobic layers may be the same or different. Optionally, the thickness of the hydrophobic material layer is 10-500 um.
[0050] The formation of fog on the window surface is a gradual process. Generally, fog first forms in a local area of the window surface, then gradually increases, and finally forms fog on the entire surface of the window. The existing defogging methods all heat the entire surface of the window, which cannot achieve fine heating. They also heat areas that do not need defogging or heating, resulting in increased ineffective losses, high power consumption, high cost and low heating efficiency.
[0051] In view of this, Figure 4 This is a schematic structural diagram of a cleaning device in a non-cleaning state according to an embodiment of the present application. Figure 5 This is a schematic diagram of the structure of a cleaning device in a cleaning state according to an embodiment of the present application, referring to Figure 4 and Figure 5In the present application, the cleaning device further includes a transparent fluid and a control unit, wherein the control unit is configured to control the transparent fluid to switch between at least two states, one of the at least two states being that the transparent fluid does not block the openings of the multiple channels away from the hydrophobic material layer 300, and the other of the at least two states being that the transparent fluid blocks at least part of the openings of the multiple channels away from the hydrophobic material layer 300. In the cleaning device of the present application, the control unit regulates the opening and closing of the openings of the multiple channels, thereby regulating the flow rate of the hydrophobic material flowing out of the above-mentioned openings, outputting as needed, and improving the utilization rate of the hydrophobic material.
[0052] For example, the transparent fluid may be a magnetic fluid, such as a ferromagnetic fluid, a water-based transparent magnetic fluid, an organic solvent transparent magnetic fluid, or a polymer-based transparent magnetic fluid; and the control unit may be a conductive winding. Figure 4 and Figure 5 , taking the transparent fluid as ferromagnetic fluid 600 and the control unit as conductive winding 500 as an example, the conductive winding 500 is arranged along the circumference of the hydrophobic material layer 300. When the conductive winding 500 is not energized, the magnetic fluid 600 is arranged along the circumference of the porous material layer 400 and is higher than the porous material layer 400. For example, the ferromagnetic fluid 600 adheres to the surface of the conductive winding 500 and the heater 200 due to the action of van der Waals force and the like. At this time, the outer surface of the porous material layer 400 is completely exposed. After being heated by the heater 200, the hydrophobic material melts and flows out through the channel of the porous material layer 400, and is evenly distributed on the surface of the porous material layer 400 or the window, thereby achieving self-cleaning effects such as oil removal, dust removal and defogging. When the conductive winding 500 is energized, a magnetic field is generated. Preferably, the direction of the magnetic induction line is perpendicular to the substrate 100. Under the action of the magnetic field force, the ferromagnetic fluid 600 moves and diffuses to the surface of the porous material layer 400 that is away from the hydrophobic material layer 300, and forms a flat liquid film. Moreover, by controlling the current of the conductive winding 500, the flow rate of the ferromagnetic fluid 600 and the area of the liquid film can be controlled, thereby regulating the number of openings that block multiple channels, and further regulating the outflow of the hydrophobic material.
[0053] Figure 6 This is a side view of a conductive winding according to an embodiment of the present application. Figure 7 This is a top view of a conductive winding according to an embodiment of the present application. Figure 8 This is a schematic structural diagram of a coil layer of a conductive winding according to an embodiment of the present application. Fig. 9 This is a schematic diagram of the structure of the insulating layer of the conductive winding of an embodiment of the present application. Please refer to Figures 6 to 9The conductive winding 500 includes a plurality of coil layers 510 and an insulating layer 520 alternately stacked. The surface of the conductive winding 500 close to the substrate 100 is the coil layer 510, and the surface of the conductive winding 500 away from the substrate 100 is the insulating layer 520. The insulating layer 520 is provided with a hollow portion, and the hollow portion penetrates the insulating layer 520 along the thickness direction of the insulating layer 520. Any two adjacent coil layers 510 are electrically connected through a connecting portion 530, and the connecting portion 530 penetrates the hollow portion. The coil layer 510 away from the substrate 100 is provided with a first connecting area 540, and the first connecting area 540 is connected to a first wire 560. The coil layer 510 close to the substrate 100 is provided with a second connecting area 550, and the second connecting area 550 is connected to a second wire 570. The first wire 560 is used to connect to a first electrode of a power supply, and the second wire 570 is used to connect to a second electrode of the power supply, thereby forming a closed current loop to generate a magnetic field in the conductive winding 500.
[0054] The material of the conductive coil includes but is not limited to silver, aluminum, copper and alloy. Optionally, the thickness of the coil layer and the insulating layer are both 1-10um. Optionally, the sum of the number of layers of the coil layer and the insulating layer is greater than or equal to 10. It is understood that the conductive winding can be arranged on the surface of the substrate or the surface of the heater, and is specifically arranged according to the shape and size of the heater.
[0055] For example, the conductive winding is disposed on the surface of the heater away from the substrate, the coil layer is a silver paste coil, and the insulating layer is an insulating oil (insulating oil includes but is not limited to Fujikura: SN-8400C, Meichen: MY-6400V, Poloma: 1318G, etc.), and the preparation process of the conductive winding is specifically described as follows:
[0056] Step 1), such as Figure 8 As shown, a layer of silver paste coil is coated on the surface of the heater 200 away from the substrate 100 to form a coil layer 510, the thickness of the coil layer 510 is 1-10 um, and a second connection area 550 is provided at the edge of the coil layer 510;
[0057] Step 2), such as Fig. 9 As shown, insulating oil is coated on the surface of the coil layer 510 facing away from the heater 200 (excluding the preset area) to form an insulating layer 520, and the thickness of the insulating layer 520 is 1-10 um, wherein the second connection area 550 is not coated with insulating oil, and the preset area is not coated with insulating oil to form a hollow, and a conductive silver paste is coated on the hollow to form a connecting portion 530, and the thickness of the connecting portion 530 is consistent with the thickness of the insulating layer 520;
[0058] Step 3), coating the surface of the insulating layer obtained in step 2) with a silver paste coil to form a second coil layer, and then coating the surface of the second coil layer away from the heater with insulating oil to form a second insulating layer, and providing a hollow and connecting portion... In this way, multiple coil layers and insulating layers are printed by stacking layer by layer, wherein a first connecting area is provided at the edge of the coil layer away from the heater;
[0059] Step 4), the first connection area is connected to the first wire, the second connection area is connected to the second wire, the first wire is connected to the first electrode of the power supply, and the second wire is connected to the second electrode of the power supply.
[0060] In the optional solution of the embodiment of the present application, Fig.10 This is a schematic structural diagram of a cleaning device in another embodiment of the present application in a non-cleaning state. Fig.11 This is a schematic diagram of the structure of a cleaning device in another embodiment of the present application in a cleaning state, referring to Fig.10 and Fig.11 The cleaning device further comprises a hydrophilic material layer 700, which is arranged at the edge of the surface of the hydrophobic material layer 300 away from the substrate 100, and is used to prevent the magnetic fluid 600 from diffusing to the surface of the porous material layer 400 when there is no magnetic field. The hydrophilic material layer 700 has superphobic properties to the magnetic fluid 600. When there is no magnetic field, the hydrophilic material layer 700 does not adhere to the magnetic fluid 600, and the outer surface of the porous material layer 400 is completely exposed; when the conductive winding 500 is energized, a magnetic field is generated, and the ferromagnetic fluid 600 moves and diffuses to the surface of the porous material layer 400 away from the hydrophobic material layer 300 under the action of the magnetic field force, and forms a flat liquid film, which blocks at least part of the openings of the multiple channels away from the hydrophobic material layer 300.
[0061] Preferably, the hydrophilic material layer is a super-hydrophilic coating. Optionally, the super-hydrophilic coating comprises: alkyl methacrylate, the mass percentage of which is 5-30%; alkyl acrylate, the mass percentage of which is 5-30%; hydroxyalkyl acrylate, the mass percentage of which is 0.5-10%; cationic surfactant, the mass percentage of which is 0.5-5%; and the balance is water.
[0062] Among them, the alkyl methacrylate includes at least one of methyl methacrylate, ethyl methacrylate, propyl methacrylate, butyl methacrylate, pentyl methacrylate, and hexyl methacrylate. The alkyl acrylate includes at least one of methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate, pentyl acrylate, and hexyl acrylate. The hydroxyalkyl acrylate includes at least one of hydroxyethyl acrylate and hydroxypropyl acrylate. The cationic surfactant includes at least one of dodecyl dimethyl acryloyloxyethyl ammonium bromide (DMAEMA-R12Br), dodecyl dimethyl acryloyloxyethyl ammonium chloride (DMAEMA-R12Cl), and dodecyl trimethyl ammonium bromide.
[0063] In order to make the porous material layer have superphobic properties to the magnetic fluid when there is no magnetic field, so that the surface of the porous material layer does not adhere to the magnetic fluid, the porous material layer is subjected to superhydrophilic modification. Specifically, the porous material layer can be placed in a plasma oven and subjected to air plasma treatment, and then immediately taken out and placed in pure water for storage. For example, AAO is placed in a plasma oven and subjected to air plasma for 10 minutes, then immediately taken out and placed in pure water for storage. Fig.12 As shown, the pore size of the AAO porous membrane is uniform.
[0064] Based on the same technical concept, the embodiment of the present application further provides a window, which includes a cleaning device in various possible embodiments of the present application, Fig.13 This is a schematic diagram of the structure of a window of an embodiment of the present application, referring to Fig.13 The substrate 100 is disposed on the surface of the window body 800 , and the heater 200 is located on a side of the substrate 100 away from the window body 800 .
[0065] Continue to refer to Fig.13 The window body 800 includes an imaging area 810, and the cleaning device includes a transparent area 01 ( Fig.13 The transparent area 01 is made of a transparent material, and the orthographic projection of the imaging area 810 on the cleaning device at least partially overlaps with the transparent area 01 to prevent the cleaning device from affecting the imaging of the window.
[0066] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.
Claims
1. A cleaning device for a window, characterized in that: The invention comprises a transparent substrate, a heater, a hydrophobic material layer and a porous material layer; the hydrophobic material layer is arranged on one side of the substrate, the heater is arranged between the substrate and the hydrophobic material layer, and at least part of the porous material layer is arranged on the surface of the hydrophobic material layer away from the substrate; The porous material layer has a plurality of channels, the opening at one end of the channel faces the hydrophobic material layer, and the opening at the other end of the channel faces away from the hydrophobic material layer. The heater is used to heat the hydrophobic material layer so that at least part of the hydrophobic material in the hydrophobic material layer melts and flows out through the channel.
2. The cleaning device according to claim 1, characterized in that The cleaning device further comprises a transparent fluid and a control unit, wherein: The control unit is configured to control the transparent fluid to switch between at least two states, one of the at least two states being that the transparent fluid does not block the openings of the multiple channels that are away from the hydrophobic material layer, and the other of the at least two states being that the transparent fluid blocks at least some of the openings of the multiple channels that are away from the hydrophobic material layer.
3. The cleaning device according to claim 2, characterized in that: The transparent fluid is a magnetic fluid, and the control unit is a conductive winding; The conductive winding is arranged along the circumference of the hydrophobic material layer so that when the conductive winding is energized, a magnetic field is generated; The magnetic fluid is arranged along the circumference of the porous material layer and is higher than the porous material layer, so that the magnetic fluid diffuses to the surface of the porous material layer away from the hydrophobic material layer under the action of the magnetic field.
4. The cleaning device according to claim 3, characterized in that: The conductive winding comprises a plurality of coil layers and insulating layers alternately stacked, the surface of the conductive winding close to the substrate is the coil layer, and the surface of the conductive winding away from the substrate is the insulating layer; The insulating layer is provided with a hollowing out, and the hollowing out penetrates the insulating layer along the thickness direction of the insulating layer. Any two adjacent coil layers are electrically connected via a connecting portion, and the connecting portion penetrates the hollowing out.
5. The cleaning device according to claim 3, characterized in that: The cleaning device further comprises a hydrophilic material layer, which is arranged on the edge of the hydrophobic material layer away from the surface of the substrate, and is used to prevent the magnetic fluid from diffusing to the surface of the porous material layer when there is no magnetic field.
6. The cleaning device according to any one of claims 1 to 5, characterized in that: The hydrophobic material layer includes N stacked hydrophobic layers, wherein N is a positive integer greater than or equal to 2, and the hydrophobic layer includes at least two target sublayers with different melting points. The melting points of the at least two target sublayers gradually decrease along the direction from the substrate to the hydrophobic material layer.
7. The cleaning device according to any one of claims 1 to 5, characterized in that: The melting point of the hydrophobic material layer is 40-100°C.
8. The cleaning device according to any one of claims 1 to 5, characterized in that: The heater includes at least one of a silver nanowire layer, indium tin oxide, and a printed circuit.
9. A window, characterized in that: It comprises a window body and a cleaning device as claimed in any one of claims 1 to 8, wherein the substrate is arranged on the surface of the window body, and the heater is located on a side of the substrate away from the window body.
10. The window according to claim 9, characterized in that The window body includes an imaging area, the cleaning device includes a transparent area, the transparent area is made of a transparent material, and the orthographic projection of the imaging area on the cleaning device at least partially overlaps with the transparent area.