Water condensing device for increasing condensing speed

Abstract

The utility model provides a water condensing device for increasing the condensing speed, and belongs to the technical field of water taking from air. The problems that an existing water condensing device is low in condensing efficiency and not ideal in condensing effect are solved. Comprising a plurality of evenly-distributed guide vane sets arranged in an air duct, the positions of guide vanes in every two adjacent guide vane sets are in one-to-one correspondence, each guide vane set comprises a plurality of evenly-distributed guide vanes, every two adjacent guide vanes in each guide vane set are opposite in an end-to-end mode, and the distance between every two adjacent guide vanes is the same. The guide vane is in an inverted comma shape, a hydrophobic condensation face is arranged on the surface of the guide vane, and a plurality of hydrophilic level points are evenly distributed on the hydrophobic condensation face. The water condensation efficiency can be improved by 1.5 times to 2 times; by means of the reinforced water condensation mode, air makes full contact with the condensation surface, the residence time is long, the condensation area is efficiently utilized, the hydrophilic and hydrophobic dot matrixes are easy to machine, and large-scale manufacturing and utilization can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of air water extraction, in particular to a water condensation device for increasing condensation speed. Background Art

[0002] The water content in the atmosphere is about 26 times the water content on the surface, so it is feasible to extract water from the air. The principle of air water extraction technology is that water vapor in the air will liquefy into water droplets when it encounters a dew point of water below the local temperature. The use of photovoltaic-driven semiconductor refrigeration does not require energy consumption, which is of great significance for reducing refrigeration energy consumption and achieving zero-carbon environmental protection. However, in the northwest region where the average relative humidity is about 25%, it is difficult to directly condense water using this principle, so it is necessary to design a method of enhanced condensation to improve condensation efficiency. Existing methods of enhanced condensation generally have some unresolved problems:

[0003] A nozzle and direct mixing condenser in the prior art (patent number CN117760230A) can spread the cooling liquid in a wide flow range to obtain a thin liquid film with a large area. However, the film quality is relatively poor, the surface gas flow rate is too fast, and the water vapor in the air cannot be well captured.

[0004] A system for secondary utilization of heat generated by preparing potassium fluoride (patent number CN110467203A), which relies on the natural condensation of water droplets and their fall by gravity. The cold air moves upward, resulting in limited condensation effect and inability to fully condense.

[0005] A steam cooling condenser and its heat exchange device (patent number CN219551244U), which separates the larger water droplets in the steam, condenses them into a shape and then falls into the cavity, fully improving the dryness of the steam and reducing the phenomenon of steam carrying water. However, the condensation cycle is short and the efficiency improvement is not significant.

[0006] A tube condensation system based on nanofluid enhanced heat transfer (patent number CN116592660A), which introduces the nanofluid working medium into the condensation sleeve in the form of steam through an evaporator with an external electric heating ring to dissipate heat and complete phase change, thereby improving the condensation heat exchange performance in the tube. However, the air flowing into the pipe cannot fully contact the condensation tube and flows out, and the condensation effect is not ideal. Utility Model Content

[0007] The technical problems to be solved by the utility model are:

[0008] In order to solve the problem of low condensation efficiency and unsatisfactory condensation effect of the existing condensation device.

[0009] The utility model adopts the following technical solutions to solve the above technical problems:

[0010] The utility model provides a condensation device for improving the condensation speed, comprising a plurality of uniformly distributed guide blade groups arranged in an air duct, each guide blade group comprising a plurality of uniformly distributed guide blades, each guide blade in two adjacent guide blade groups having a one-to-one corresponding position, two adjacent guide blades in each guide blade group having a same spacing, and the guide blades are in the shape of an inverted comma; a hydrophobic condensation surface is provided on the surface of the guide blade, and a plurality of hydrophilic sites are uniformly distributed on the hydrophobic condensation surface.

[0011] Furthermore, an angle a between a line connecting two side ends of the guide vane and a horizontal plane is 20°-45°.

[0012] Furthermore, the angle a is 25°-30°.

[0013] Furthermore, the lower part of the air duct is connected to a water collection port for collecting water condensed in the air duct provided with a condensing device.

[0014] Furthermore, the distance between two adjacent hydrophilic sites is 5 mm to 10 mm.

[0015] Furthermore, the head-to-tail straight-line distance between two adjacent guide blades in each row of guide blade groups is 2mm-5mm, and the spacing between two adjacent rows of guide blade groups is 20mm-30mm.

[0016] Furthermore, the guide vanes are welded in the air duct.

[0017] Furthermore, the guide vanes are metal guide vanes.

[0018] Furthermore, the metal guide vanes are copper guide vanes, iron guide vanes or steel guide vanes.

[0019] Furthermore, the wind speed for introducing into the air duct is 0.5-0.85 m / s.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] The utility model discloses a condensation device for improving condensation speed, comprising a plurality of uniformly distributed guide blade groups arranged in an air duct, wherein the positions of each guide blade in two adjacent guide blade groups correspond to each other, each guide blade group comprises a plurality of uniformly distributed guide blades, and two adjacent guide blades in each guide blade group are opposite to each other end to end and have the same spacing, the guide blades are in the shape of an inverted comma, and the surface of the guide blades is provided with a hydrophobic condensation surface, and a plurality of hydrophilic sites are uniformly distributed on the hydrophobic condensation surface;

[0022] The alternating distribution of hydrophilic sites on the guide vanes can make water vapor form beaded condensation at the hydrophilic sites more quickly, and be quickly drained away from the hydrophobic condensation surface by the hydrophobic condensation surface around it; experimental verification shows that the use of this device can increase the condensation efficiency by 1.5 to 2 times; this enhanced condensation method allows the air to fully contact the condensation surface, with a long residence time and efficient use of the condensation area, and the hydrophilic and hydrophobic dot matrix is ​​simple to process and can be produced and used on a large scale. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural diagram of a water condensation device for increasing the condensation speed in an embodiment of the utility model;

[0024] Figure 2 This is a structural diagram of the guide vane in the embodiment of the utility model;

[0025] Figure 3 This is a diagram showing the arrangement of hydrophilic sites of the guide vanes in an embodiment of the utility model.

[0026] Description of reference numerals:

[0027] 1. Air duct; 2. Guide vane; 3. Water collection port; 201. Hydrophobic condensation surface; 202. Hydrophilic site. DETAILED DESCRIPTION

[0028] In the description of the present utility model, it should be noted that the terminology nouns in the various embodiments, such as words indicating directions such as "upper", "lower", "front", "back", "left", "right", etc., are only for simplifying the description of the positional relationship based on the drawings in the specification, and do not mean that the referred elements and devices must be operated according to the specific directions and specified operations and methods and structures in the specification. Such directional nouns do not constitute limitations on the present utility model.

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0030] Specific implementation plan 1: Combine Figures 1 to 3As shown, the utility model provides a condensation device for improving the condensation speed, including several rows of uniformly distributed guide blade groups arranged in the air duct 1, each row of guide blade groups includes several uniformly distributed guide blades 2, the positions of each guide blade 2 in two adjacent rows of guide blade groups are one-to-one corresponding, the two adjacent guide blades 2 in each row of guide blade groups are opposite to each other end to end, and the spacing is the same, the guide blades 2 in each row of guide blade groups form a wavy shape to enhance the collision between the air and the guide blades, the guide blades 2 are inverted comma shape, and the angle a between the connecting line of the two side ends of the guide blades 2 and the horizontal plane is 20°-45°; the surface of the guide blade 2 is provided with a hydrophobic condensation surface 201, and the hydrophobic condensation surface 201 is uniformly distributed with a plurality of hydrophilic sites 202; the lower part of the air duct 1 is connected to the water collection port 3 for collecting the water condensed in the air duct 1 provided with the condensation device.

[0031] The hydrophilic modification is performed at a certain distance on the hydrophobic condensation surface 201, thereby obtaining a hydrophilic site 202 that is easier to condense. After the droplets in the air condense on the hydrophilic site 202, they are quickly drained through the hydrophobic site, achieving the purpose of rapid surface renewal, thereby improving the condensation efficiency.

[0032] Preferably, when the angle a between the line connecting the two side ends of the guide blade 2 and the horizontal plane is 25°-30°, and the wind speed entering the air duct 1 is 0.5-0.85m / s, a balance can be achieved between the contradiction between high-speed impact to reduce the energy of water vapor nucleation and the excessive wind speed that intensifies the evaporation of water droplets, thereby improving the condensation efficiency; the alternating distribution of the hydrophilic sites 202 can enable the water vapor to form beaded condensation at the hydrophilic sites 202 more quickly, and be quickly drained away from the hydrophobic condensation surface 201 by the hydrophobic surface around it.

[0033] The distance between two adjacent hydrophilic sites 202 is 5 mm to 10 mm, and the hydrophilic sites 202 are formed by applying a hydrophilic reagent on the hydrophobic condensation surface 201 of the guide vane 2 and waiting for it to dry. The hydrophilic reagent can be an existing reagent such as a carboxylic acid ester solvent, an organic acid or an organic solvent with an amino group, and the hydrophobic condensation surface 201 can be formed by coating the guide vane 2 with fatty acid metal soap, paraffin, polyolefin, silicone resin or fluorocarbon polymer.

[0034] The head-to-tail straight-line distance between two adjacent guide blades 2 in each row of guide blade groups is 2mm-5mm, and the spacing between two adjacent rows of guide blade groups is 20mm-30mm.

[0035] The guide blades 2 are welded in the air duct 1 , or the guide blades 2 and the air duct 1 are integrally formed.

[0036] The guide blade 2 is a metal guide blade, and the metal guide blade is a copper guide blade, an iron guide blade, a steel guide blade or other metal guide blades.

[0037] The front and rear sides of the guide blade 2 are respectively connected to the front and rear side walls of the air duct 1 .

[0038] The hydrophilic reagent used for the hydrophilic site 202 may also be a hydrophilic modifier, and the preparation method of the hydrophilic modifier comprises the following steps:

[0039] S100, weigh 200 mL of alkaline buffer solution, pH = 7.3-7.8;

[0040] S200, add potassium persulfate to the alkaline buffer and let stand for 30 minutes;

[0041] S300, sequentially adding dopamine hydrochloride, ethylenediamine and polyethyleneimine to an alkaline buffer solution, and storing the mixture at a constant temperature after sufficient reaction to obtain a hydrophilic modifier.

[0042] In step S100, the alkaline buffer is a phosphate buffer or a Tris-HCl buffer.

[0043] In step S200, the mass of the potassium persulfate is 0.4 g to 0.6 g.

[0044] In step S300, the mass of dopamine hydrochloride is 0.4 g, the mass of ethylenediamine is 0.1-0.15 g, and the mass of polyethyleneimine is 0.38-0.4 g; and the constant temperature condition is 25°C.

[0045] Example 1

[0046] S100, weigh 200 mL of phosphate buffer, pH = 7.4;

[0047] S200, add 0.58 g of potassium persulfate to the phosphate buffer and let stand for 30 min;

[0048] S300, adding 0.4 g of dopamine hydrochloride, 0.13 g of ethylenediamine, and 0.39 g of polyethyleneimine to the buffer solution in sequence, and storing at 25° C. after sufficient reaction to obtain a hydrophilic modifier;

[0049] S400, dripping a hydrophilic modifier on the surface of the guide vane 2 at intervals of 10 mm;

[0050] S500, after the modifier is completely evaporated, the guide blade 2 is installed in the 150mm×150mm air duct 1 to form a hydrophilic-hydrophobic lattice coupled macroscopic impact system to form a condensation device.

[0051] Example 2

[0052] S100, weigh 200 mL of phosphate buffer, pH = 7.4;

[0053] S200, add 0.4 g of potassium persulfate to the phosphate buffer and let stand for 30 min;

[0054] S300, adding 0.4 g dopamine hydrochloride, 0.11 g ethylenediamine, and 0.38 g polyethyleneimine to the buffer solution in sequence, and storing at 25° C. after sufficient reaction to obtain a hydrophilic modifier;

[0055] S400, dripping a hydrophilic modifier on the surface of the guide vane 2 at intervals of 5 mm;

[0056] S500, after the modifier is completely evaporated, the guide blade 2 is installed in the 150mm×150mm air duct 1 to form a hydrophilic-hydrophobic lattice coupled macroscopic impact system to form a condensation device.

[0057] Example 3

[0058] S100, weigh 200 mL of phosphate buffer, pH = 7.4;

[0059] S200, add 0.5 g of potassium persulfate to the phosphate buffer and let it stand for 30 min;

[0060] S300, adding 0.4 g of dopamine hydrochloride, 0.15 g of ethylenediamine, and 0.40 g of polyethyleneimine to the buffer solution in sequence, and storing at 25° C. after sufficient reaction to obtain a hydrophilic modifier;

[0061] S400, dripping a hydrophilic modifier on the surface of the guide vane 2 at an interval of 7 mm;

[0062] S500, after the modifier is completely evaporated, the guide blade 2 is installed in the 150mm×150mm air duct 1 to form a hydrophilic-hydrophobic lattice coupled macroscopic impact system to form a condensation device.

[0063] Comparative Example

[0064] The guide vanes without hydrophilic sites were installed in a 150 mm × 150 mm air duct.

[0065] The comparative example is a guide blade 2 without a hydrophilic site, and the condensed water droplets are large and irregularly distributed; in the surface condensation of Example 3, the water droplets are small and distributed on the hydrophilic site 202. In a unit time, the amount of water collected by Example 3 is 1.5 to 2 times the amount of water collected by the comparative example, proving that the condensation device has a strong condensation property and can effectively improve the condensation efficiency. The condensation efficiency under the optimal wind speed and the optimal angle a is about 1.5 times that of the other working conditions. At the same time, the film-like condensation is changed to bead-like condensation after the hydrophilic-hydrophobic modification.

[0066] Although the utility model is disclosed as above, the protection scope of the utility model is not limited thereto. Those skilled in the art of the utility model may make various changes and modifications without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. A condensation device for increasing condensation speed, characterized in that: The invention comprises a plurality of evenly distributed guide blade groups arranged in an air duct (1), each guide blade group comprising a plurality of evenly distributed guide blades (2), the positions of each guide blade (2) in two adjacent guide blade groups being in one-to-one correspondence, the two adjacent guide blades (2) in each guide blade group being opposite each other end to end and having the same spacing, and the guide blades (2) being in the shape of an inverted comma; the surface of the guide blade (2) being provided with a hydrophobic condensation surface (201), and the hydrophobic condensation surface (201) being evenly distributed with a plurality of hydrophilic sites (202).

2. A condensation device for increasing condensation speed according to claim 1, characterized in that: The angle a between the connecting line of the two side ends of the guide blade (2) and the horizontal plane is 20°-45°.

3. A condensation device for increasing condensation speed according to claim 2, characterized in that: The angle a is 25°-30°.

4. A condensation device for increasing condensation speed according to claim 2, characterized in that: The lower part of the air duct (1) is connected to a water collection port (3) for collecting water condensed in the air duct (1) provided with a condensation device.

5. A condensation device for increasing condensation speed according to claim 4, characterized in that: The distance between two adjacent hydrophilic sites (202) is 5 mm to 10 mm.

6. A water condensation device for increasing condensation speed according to claim 5, characterized in that: The head-to-tail straight-line distance between two adjacent guide blades (2) in each row of guide blade groups is 2mm-5mm, and the spacing between two adjacent rows of guide blade groups is 20mm-30mm.

7. A condensation device for increasing condensation speed according to claim 6, characterized in that: The guide blades (2) are welded inside the air duct (1).

8. A water condensation device for increasing condensation speed according to claim 7, characterized in that: The guide vanes (2) are metal guide vanes.

9. A water condensation device for increasing condensation speed according to claim 8, characterized in that: The metal guide vanes are copper guide vanes, iron guide vanes or steel guide vanes.

10. A condensation device for increasing condensation speed according to claim 9, characterized in that: The wind speed introduced into the air duct (1) is 0.5-0.85 m / s.

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