An all-weather solar interface evaporation device

Abstract

The utility model discloses a kind of all-weather solar interface evaporation devices, including water reservoir, transparent condensing cover located above water reservoir and water collection tank for collecting water drop on condensing cover;Water reservoir is equipped with photo-thermal conversion device, and water in water reservoir is introduced on photo-thermal conversion material by capillary action by photo-thermal conversion device;The photo-thermal conversion device includes auxiliary heating mechanism, and auxiliary heating mechanism includes grid support plate, photo-thermal conversion material is laid on grid support plate, and heating rod is inserted into photo-thermal conversion material and one end is fixedly connected with grid support plate;It further includes non-woven fabric for water delivery to photo-thermal conversion material.The utility model all-weather solar interface evaporation device is through photo-thermal-electric heating synergistic effect, solve the problem that traditional solar evaporation device is limited by environmental illumination, and uninterrupted operation of device all-weather can be realized.

Description

Technical Field

[0001] This utility model relates to an all-weather solar interface evaporation device. Background Technology

[0002] Solar interface evaporation technology, as a green and low-energy water treatment solution, has received widespread attention in recent years in the fields of seawater desalination, wastewater purification, and freshwater supply. However, traditional solar evaporation devices are highly dependent on sunlight; under conditions of insufficient light, such as cloudy days, fog, or nighttime, evaporation efficiency drops sharply or even stops. Furthermore, the condensation structure of traditional devices is simple, and steam easily forms a stagnant layer on the condenser surface, leading to increased thermal resistance and reduced condensation efficiency. In addition, in existing technologies, auxiliary heating devices are often separated from the evaporation unit, resulting in insufficient system integration and difficulty in achieving efficient continuous operation. Utility Model Content

[0003] Purpose of the utility model: The purpose of this utility model is to provide a solar interface evaporation device that is not limited by ambient light and can operate around the clock.

[0004] Technical Solution: The all-weather solar interface evaporation device of this utility model includes a water storage tank, a transparent condenser cover located above the water storage tank, and a water collection tank for collecting water droplets on the condenser cover; a photothermal conversion device is provided on the water storage tank, which introduces water from the water storage tank into the photothermal conversion material through capillary action; the photothermal conversion device includes an auxiliary heating mechanism, which includes a grid-shaped support plate, on which the photothermal conversion material is laid, and a heating rod is inserted into the photothermal conversion material with one end fixedly connected to the grid-shaped support plate; it also includes a non-woven fabric for transporting water to the photothermal conversion material.

[0005] The transparent condenser hood and the water collection tank both have a hydrophobic coating on their inner surfaces and an anti-reflective film on their outer surfaces. The hydrophobic coating prevents steam from forming a stagnant layer on the condenser hood surface, which would increase thermal resistance and reduce condensation efficiency; the anti-reflective film improves light transmittance and enhances light absorption efficiency.

[0006] This utility model of solar interface evaporation device is also equipped with a photosensitive sensor. The photosensitive sensor and the heating rod are connected to an external PLC control box. The heating rod and the photosensitive sensor are linked and automatically start and stop according to the light intensity.

[0007] The solar interface evaporation device of this utility model also includes a support structure, which is fixed to the top opening of the water storage tank by a fixed mold. A grid-shaped support plate is placed on the support structure, and the support structure has hollowed-out gaps of equal width. Non-woven fabric passes through the hollowed-out gaps to transport water to the photothermal conversion material on the grid-shaped support plate.

[0008] Beneficial effects: Compared with the prior art, the present invention has the following advantages: The all-weather solar interface evaporation device of the present invention solves the problem of the limitation of traditional solar evaporation devices by ambient light through the synergistic effect of photothermal and electrothermal, and can realize the uninterrupted operation of the device around the clock. Attached Figure Description

[0009] Figure 1 This is an external view of the device of this utility model;

[0010] Figure 2 This is a diagram showing the internal structure of the device of this utility model;

[0011] Figure 3 This is a cross-sectional view of the device of this utility model;

[0012] Figure 4 This is a schematic diagram of the combined photothermal conversion material and auxiliary heating mechanism.

[0013] Figure 5 A structural diagram of the supporting structure;

[0014] Figure 6 This is a schematic diagram of the structure after the support structure and auxiliary heating mechanism are combined. Detailed Implementation

[0015] like Figures 1-6 As shown, this utility model's all-weather solar interface evaporation device includes a water storage tank 5, a transparent condenser hood 1 located above the water storage tank 5, and a water collection tank 8 for collecting water droplets on the condenser hood 1. The water storage tank 5 is made of PMMA, with a water inlet pipe 6 on its side wall. The water inlet pipe 6 is made of polyethylene and is positioned at a certain height from the bottom of the water storage tank 5, and is designed as an "L"-shaped inlet pipe to prevent backflow of water into the water storage tank 5. The water storage tank 5 is connected to an external water source to be treated via the water inlet pipe 6, which is connected to a flow meter to achieve a continuous and stable supply of seawater or sewage. The water collection tank 8 is located below the water storage tank 5, and the water storage tank 5 is fixed to the side wall of the water collection tank 8 by solid PMMA support columns 7. The water collection tank 8 is quadrangular. The cone-shaped water collection tank 8 has an opening area at the top that is larger than the area of ​​the bottom surface of the rectangular water storage tank 5. The water collection tank 8 is made of PMMA material and has a polyethylene outlet pipe 10 at the bottom. The inner wall is coated with a hydrophobic coating to allow condensate to quickly collect at the outlet pipe 10. The condenser cover 1 is an inclined transparent glass plate that covers the top of the shell 9, allowing sunlight to pass through and irradiate the photothermal conversion material. Through photothermal conversion, interface evaporation occurs, and water vapor evaporates onto the glass plate. The temperature difference between the glass plate and the ambient environment is used to complete the rapid condensation of the steam. The inner surface of the glass plate condenser cover 1 is coated with a hydrophobic coating to prevent steam from forming a stagnant layer on the condensation surface, which would increase thermal resistance and reduce condensation efficiency. The outer surface is covered with an anti-reflective film to improve light transmittance.

[0016] A photothermal conversion device is installed on the water storage tank 5. This device uses capillary action to guide water from the storage tank 5 onto the photothermal conversion material 23. The photothermal conversion device includes an auxiliary heating mechanism 2, which comprises a grid structure (grid-like support plate 21) composed of polyethylene pipes. Single-end heating rods 22 are installed at each intersection of the polyethylene pipe grid. The photothermal conversion material 23 is a carbon-based material, placed on the polyethylene grid and surrounding each single-end heating rod 22. The heating rods 22 are made of corrosion-resistant single-end stainless steel, enabling auxiliary heating to maintain evaporation efficiency even with insufficient sunlight, achieving all-weather interface water evaporation. The power of the heating rods 22 is adjustable and linked to an external photosensitive sensor, automatically starting and stopping according to the light intensity. The wires connecting the heating rods 22 to the outside pass through the hollow polyethylene pipe and are led out through the external wiring port 4 on the side wall of the casing 9, connecting to an external solar panel to achieve light energy conversion and utilization. Therefore, the entire evaporation device requires no additional power supply.

[0017] This utility model's solar interface evaporation device also includes a support structure 3, which is made of polyethylene foam (PE) and serves to support the auxiliary heating mechanism 2 and carbon-based material 23 above it. The entire structure is stably fixed at the top opening of the water storage tank 5. A grid-like support plate 21 is placed on the support structure 3, which is fixed to the top opening of the water storage tank 5 by a fixing mold 32, preventing direct contact between the photothermal conversion material 23 and the water, thus avoiding significant heat loss. The surface of the polyethylene foam has uniformly sized perforated gaps 31. Non-woven fabric is placed within these gaps 31, guiding water to rise capillarily to the carbon-based material 23 above the polyethylene foam, achieving a small but uniform and stable water supply.

[0018] When the photosensor detects insufficient sunlight, the heating rod 22 is activated. Heat is transferred through the heating rod 22 to the surrounding carbon-based material 23, thereby heating the moisture within and maintaining the evaporation rate. When there is sufficient sunlight, the heating rod 22 is deactivated, and the carbon-based material 23 on the mesh support plate 21 absorbs solar energy to achieve interfacial evaporation, realizing a seamless switch between photothermal and electrothermal processes. At this time, the solar panel also stores solar energy to power the single-ended heating rod 22 when sunlight is insufficient, ensuring the stability of the interfacial evaporation device in all weather conditions.

Claims

1. An all-weather solar interface evaporation device, comprising a water storage tank (5), a transparent condenser cover (1) located above the water storage tank (5), and a water collection tank (8) for collecting water droplets on the condenser cover (1); the water storage tank (5) is provided with a photothermal conversion device, which introduces water from the water storage tank (5) onto a photothermal conversion material through capillary action; characterized in that: The photothermal conversion device includes an auxiliary heating mechanism (2), which includes a grid-shaped support plate (21), a photothermal conversion material (23) laid on the grid-shaped support plate (21), a heating rod (22) inserted into the photothermal conversion material (23) and one end fixedly connected to the grid-shaped support plate (21); it also includes a non-woven fabric for conveying water to the photothermal conversion material (23).

2. The all-weather solar interface evaporation device according to claim 1, characterized in that: The inner surfaces of the transparent condenser cover (1) and the water collection tank (8) are both provided with a hydrophobic coating.

3. The all-weather solar interface evaporation device according to claim 2, characterized in that: The outer surface of the transparent condenser cover (1) is provided with an anti-reflective film layer.

4. The all-weather solar interface evaporation device according to claim 1, characterized in that: It is also equipped with a photosensitive sensor, and the photosensitive sensor and heating rod are connected to an external PLC control box.

5. The all-weather solar interface evaporation device according to claim 1, characterized in that: The photothermal conversion device also includes a support structure (3), which is fixed to the top opening of the water storage tank (5) by a fixed mold (32). A grid-shaped support plate (21) is placed on the support structure (3), and the support structure (3) has a hollowed-out gap (31) of equal width. The non-woven fabric passes through the hollowed-out gap (31) to transport water to the photothermal conversion material (23) on the grid-shaped support plate (21).

Images