CN203011220U - Bionic surface structure for reinforcing evaporation and heat transfer of liquid films - Google Patents
Bionic surface structure for reinforcing evaporation and heat transfer of liquid films Download PDFInfo
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- CN203011220U CN203011220U CN 201220690336 CN201220690336U CN203011220U CN 203011220 U CN203011220 U CN 203011220U CN 201220690336 CN201220690336 CN 201220690336 CN 201220690336 U CN201220690336 U CN 201220690336U CN 203011220 U CN203011220 U CN 203011220U
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- bionic
- sawtooth shape
- heat transfer
- liquid films
- dimensional bionic
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Abstract
The utility model discloses a bionic surface structure for reinforcing evaporation and heat transfer of liquid films. Three-dimensional bionic sawtooth shape unit bodies are distributed on the matrix surface of a heat transfer pipe or a heat transfer plate, and the structural size of each three-dimensional bionic sawtooth shape unit body is in a micron level or in a millimeter level; the three-dimensional bionic sawtooth shape unit bodies are arranged in a oblique state, an oblique direction is same with a flowing direction of liquid films, and the oblique three-dimensional bionic sawtooth shape unit bodies are connected with each other in a lap joint mode; the top portions of the three-dimensional bionic sawtooth shape unit bodies are provided with three tiny sawtooth shape structures with tiny scales, the three tiny sawtooth shape structures with the tiny scales are arranged in a manner of being high at middle and being low at bilateral ends, the heights of the bilateral ends are equivalent; and the arrangement manner of the three-dimensional bionic sawtooth shape unit bodies is in diamond arrangement or in rectangle arrangement. The three-dimensional bionic sawtooth shape unit bodies of the bionic surface structure for reinforcing evaporation and heat transfer of the liquid films are connected with each other in a lap joint mode, enable the liquid films to uniformly spread out, prevent surfaces from appearing dry spots or dry points; the tiny sawtooth shape structural surface can control the flowing direction of the liquid films, reduce thickness of the liquid films, effectively lower heat transfer thermal resistance, and improve evaporation efficiency and heat transfer efficiency of the liquid films.
Description
Technical field
The utility model relates to a kind of surface texture, particularly a kind of bionic surface structure of strengthening the liquid film evaporation and heat-exchange.
Background technology
The liquid film evaporation heat exchange is a kind of high efficient heat exchanging technology that grew up in recent years, have low discharge, the little temperature difference, the particular advantages such as heat and mass transfer coefficient is high, simple in structure and power consumption is little, received outstanding concern under the high heat flux in traditional industry field and high-technology field aspect the heat exchange reinforcement.Studies show that, the main cause that affects the exchange of liquid film evaporation caloic is the nowed forming of liquid film and the thickness of liquid film, how the maintenance medium membrane flow is stable, make it uniform wetting heating surface, preventing from breaking because liquid is thin makes heating surface dry spot occur or does the district, and the factor of at first considering is the planar condition of heat exchange wall and structure.Design is fit to the micro-structure surface of liquid film evaporation heat exchange, with control liquid film nowed forming and thickness of liquid film, and then improves the liquid film evaporation heat exchange property, and energy-conserving and environment-protective, assurance equipment performance and working life are had vital effect.
Being used at present the hot merit surperficial fin structure of energy of reinforcement liquid film evaporation and heat-exchange and the selection of size does not still have theoretical direction perfect, moulding, has certain blindness in design.If it is improper that wall form or its dimensional parameters are selected, may cause that the liquid film part temporarily or forever breaks, worsen the heat and mass effect.Changing the situation of rule of thumb determining in the past surface texture and dimensional parameters, by functional requirement design surface functional structure, then make according to planform, is the direction of this field development.Seeking to be fit to the micro-structure surface that the liquid film evaporation heat exchange is strengthened, is the key issue that the augmentation of heat transfer researcher is badly in need of solving.
Summary of the invention
The purpose of this utility model is to provide a kind of bionic surface structure of strengthening the liquid film evaporation and heat-exchange, the utility model is based on dog tongue good heat transfer characteristic and dog tongue surface micro-structure form, designed a kind of bionic reinforced heat exchange surface that possesses good evaporation and heat-exchange performance, can improve equipment thermal efficiency, reduce heat exchange area, save equipment investment, have very large economic benefit and social benefit.
The technical solution of the utility model:
The utility model is to be distributed with three-dimensional bionic zigzag cell cube on the matrix surface of heat-transfer pipe or heat transfer plate, and the physical dimension of described each three-dimensional bionic zigzag cell cube is micron order or grade; The inclined arrangement of described three-dimensional bionic zigzag cell cube, its incline direction is consistent with the flow direction of liquid film, and the three-dimensional bionic zigzag cell cube that tilts overlaps mutually.
The tip of described three-dimensional bionic zigzag cell cube has little zigzag structure of three miniature scale, in the middle of little zigzag structure of three miniature scale is low with two ends high mode arrange and the two ends height identical.
The arrangement mode of described three-dimensional bionic zigzag cell cube is diamond array or rectangular arranged.
The beneficial effects of the utility model are:
1, the three-dimensional bionic zigzag cell cube on matrix surface overlaps mutually, and liquid film is sprawled evenly, prevents from occurring dry spot on the surface or doing;
2, the flow direction of liquid film can be controlled in this little zigzag structure surface, reduces thickness of liquid film, effectively reduces heat transfer resistance, improves the liquid film evaporation heat transfer efficiency.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the bionical zigzag unit body main of single 3 D of the present utility model view.
Fig. 3 is the left view of Fig. 2.
Fig. 4 is the top view of Fig. 2.
Fig. 5 is that the master that three-dimensional bionic zigzag cell cube rectangular mode of the present utility model is arranged looks schematic diagram.
Fig. 6 is the left view of Fig. 5.
Fig. 7 is the top view of Fig. 5.
Fig. 8 is that the master that three-dimensional bionic zigzag cell cube rhombus mode of the present utility model is arranged looks schematic diagram.
Fig. 9 is the left view of Fig. 8.
Figure 10 is the top view of Fig. 8.
Wherein: the matrix surface of 1-heat-transfer pipe or heat transfer plate; 2-three-dimensional bionic zigzag cell cube; T-sawtooth cell cube thickness; W-sawtooth cell cube width; H-sawtooth cell cube height; W
aThe width of-relatively high little sawtooth; W
bThe width of-relatively low little sawtooth; H
aThe height of-relatively high little sawtooth; H
bThe height of-relatively low little sawtooth; H
cThe tie point of-relatively low little sawtooth and relative high little sawtooth is to the distance of sawtooth bottom; The distance of A-fore-and-aft direction three-dimensional bionic sawtooth cell cube; The distance of B-left and right directions three-dimensional bionic sawtooth cell cube; P-in diamond array, the distance that the left and right directions of fore-and-aft direction three-dimensional bionic zigzag cell cube staggers.
The specific embodiment
See also Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4, the present embodiment is to be distributed with three-dimensional bionic zigzag cell cube 1 on the matrix surface 2 of heat-transfer pipe or heat transfer plate, the tilt angle alpha of three-dimensional bionic zigzag cell cube 1 is 50～70 °, the sawtooth that tilts overlaps mutually, arrange closely, the side of three-dimensional bionic zigzag cell cube 1 and the angle β of horizontal direction are 70～90 °; The width W of described three-dimensional bionic zigzag cell cube 1 is 0.2～1mm, and three-dimensional bionic zigzag cell cube 1 thickness T is 0.2～1mm, and three-dimensional bionic zigzag cell cube 1 height H is 0.3～1.2mm; Described three-dimensional bionic zigzag cell cube 1 is inclined, and its incline direction is consistent with the flow direction of liquid film.
The tip of described three-dimensional bionic zigzag cell cube 1 has little zigzag structure 11 of 11, three miniature scale of little zigzag structure of three miniature scale arranges in the low middle high mode in two ends, and the two ends height is identical, the width W of relatively low little sawtooth
bBe 0.2～0.5mm, the width W of relatively high little sawtooth
aBe 0.1～0.4mm, the height H of relatively low little sawtooth
bBe 0.2～0.8mm, the height H of relatively high little sawtooth
aBe 0.3～1.2mm, the tie point of relatively low little sawtooth and relative high little sawtooth is to the distance H of sawtooth bottom
cBe 0.3～0.8mm.
The arrangement mode of three-dimensional bionic zigzag cell cube 1 has two kinds, respectively diamond array and rectangular arranged, see also Fig. 5, Fig. 6 and shown in Figure 7, for rectangular mode is arranged, distance A between fore-and-aft direction three-dimensional bionic zigzag cell cube 1 is 0.2～1mm, and between left and right directions three-dimensional bionic zigzag cell cube 1 is 0.2～1mm apart from B; See also Fig. 8, Fig. 9 and shown in Figure 10, in the rhombus mode is arranged, distance A identical with rectangular arranged between fore-and-aft direction and left and right directions three-dimensional bionic zigzag cell cube 1 is 0.2～1mm, and the distance P that the left and right directions of fore-and-aft direction three-dimensional bionic zigzag cell cube 1 staggers is 0.3～0.8mm.
Claims (3)
1. bionic surface structure of strengthening the liquid film evaporation and heat-exchange, it is characterized in that: be to be distributed with three-dimensional bionic zigzag cell cube (1) on the matrix surface (2) of heat-transfer pipe or heat transfer plate, the inclined arrangement of described three-dimensional bionic zigzag cell cube (1), its incline direction is consistent with the flow direction of liquid film, and the three-dimensional bionic zigzag cell cube (1) of inclination is overlap joint mutually.
2. a kind of bionic surface structure of strengthening the liquid film evaporation and heat-exchange according to claim 1, it is characterized in that: the arrangement mode of described three-dimensional bionic zigzag cell cube (1) is diamond array or rectangular arranged.
3. a kind of bionic surface structure of strengthening the liquid film evaporation and heat-exchange according to claim 1 and 2, it is characterized in that: the tip of described three-dimensional bionic zigzag cell cube (1) has three little zigzag structures (11), in the middle of three little zigzag structures (11) are low with two ends high mode arrange and the two ends height identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220690336 CN203011220U (en) | 2012-12-13 | 2012-12-13 | Bionic surface structure for reinforcing evaporation and heat transfer of liquid films |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220690336 CN203011220U (en) | 2012-12-13 | 2012-12-13 | Bionic surface structure for reinforcing evaporation and heat transfer of liquid films |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203011220U true CN203011220U (en) | 2013-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220690336 Withdrawn - After Issue CN203011220U (en) | 2012-12-13 | 2012-12-13 | Bionic surface structure for reinforcing evaporation and heat transfer of liquid films |
Country Status (1)
| Country | Link |
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| CN (1) | CN203011220U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103017593A (en) * | 2012-12-13 | 2013-04-03 | 吉林大学 | Bionic surface structure for strengthening evaporation heat exchanging of liquid film |
-
2012
- 2012-12-13 CN CN 201220690336 patent/CN203011220U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103017593A (en) * | 2012-12-13 | 2013-04-03 | 吉林大学 | Bionic surface structure for strengthening evaporation heat exchanging of liquid film |
| CN103017593B (en) * | 2012-12-13 | 2014-06-18 | 吉林大学 | Bionic surface structure for strengthening evaporation heat exchanging of liquid film |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130619 Effective date of abandoning: 20140618 |
|
| RGAV | Abandon patent right to avoid regrant |