CN106422384B

CN106422384B - Liquid distributor based on fractal bionic

Info

Publication number: CN106422384B
Application number: CN201610965182.5A
Authority: CN
Inventors: 柯锐
Original assignee: Suzhou Aros Environment Generator Co ltd
Current assignee: Suzhou Aros Environment Generator Co ltd
Priority date: 2016-11-04
Filing date: 2016-11-04
Publication date: 2023-08-04
Anticipated expiration: 2036-11-04
Also published as: CN106422384A

Abstract

The invention discloses a fractal bionic-based liquid distributor, which comprises a substrate, wherein a primary main flow diversion channel penetrating the substrate is arranged on the substrate, a plurality of secondary diversion channels are arranged on the surface of the substrate, the inflow openings of the secondary diversion channels are connected with the primary main flow diversion channel, liquid enters the surface of the substrate through the secondary diversion channels after entering from the primary main flow diversion channel, the liquid is rapidly dispersed along the secondary diversion channels through rapid diversion of the secondary diversion channels, and the three-stage micropore structure channel has super-infiltration capacity, so that the liquid of the secondary diversion channels can be further rapidly unfolded, the liquid dispersion degree is high, the dispersion is rapid, the subsequent evaporation and gasification of the liquid are facilitated, the structure is simple, the cost is low, and the fractal bionic-based liquid distributor is suitable for large-scale production.

Description

Liquid distributor based on fractal bionic

Technical Field

The invention relates to a device for driving liquid to evaporate rapidly, in particular to a liquid distributor based on fractal bionic.

Background

Evaporation of liquids is the most fundamental physical process and has found wide application in various industries. For example, a heat pipe heat exchanger needs to convert working medium into steam through evaporation at a heat absorption end and then transmit the steam to a heat dissipation end, and the characteristics of the evaporation process are critical to the overall performance of the heat pipe heat exchanger. Also, in hospitals and pharmaceutical factories, for example, the hydrogen peroxide solution needs to be converted into a gaseous state to exert maximum efficacy, and hydrogen peroxide is easily decomposed, so that the evaporation process must be particularly controlled. In the field of testing, there is also a need to closely control the evaporation of liquids. A substantial amount of standard gas is obtained by a liquid source evaporation arrangement.

In order to accelerate evaporation, the most common method is to heat the liquid to boiling, or to reduce the pressure in the evaporation chamber. However, boiling evaporation is unstable on one hand and is not suitable for application with high stability requirements; on the other hand, some substances which are easy to decompose tend to be destroyed before evaporation. The use of low pressure or vacuum evaporation can add significant cost.

Another approach is to spread the liquid into a film to maximize the evaporation area. For example, a falling film evaporator commonly used in the chemical industry is to spread liquid on the surface under the action of gravity, so as to accelerate evaporation. Micro-groove evaporator is a hot spot studied at present, and liquid is fully spread in a groove with a micrometer scale. For example, US8167030 discloses microchannel evaporation devices that employ microchannels for evaporation to achieve stable evaporation over a wide temperature range. However, the existing methods have disadvantages such as complicated micro-channel system, difficulty in mass processing, low liquid spreading efficiency, and excessive liquid transport resistance.

Disclosure of Invention

The invention solves the technical problem of providing a liquid distributor based on fractal bionic, which can rapidly spread liquid in a large area.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a liquid distributor based on fractal bionic, includes the base member, be provided with the one-level mainstream guiding gutter way that runs through the base member on the base member, the base member surface is provided with a plurality of secondary shunt channels, the inflow mouth and the one-level mainstream guiding gutter way of secondary shunt channels link to each other.

Further is: the secondary shunt channel includes a plurality of branches such that liquid within the secondary shunt channel may spread in different directions.

Further is: the surface of the matrix is also provided with three-level micropore structure channels, the three-level micropore structure channels are a plurality of micro-level micropores or nano-level micropores or micro-level and nano-level mixed micropores arranged on the surface of the matrix, the micropores form a channel, and liquid in the secondary shunt channels can diffuse towards different directions of the surface of the matrix through the three-level micropore structure channels.

Further is: the substrate is of a three-dimensional plate-shaped structure composed of metal or ceramic, and the surface of the substrate is of a plane or curved surface structure.

Further is: the primary main flow diversion channels are in a plurality and have a hole-shaped structure with the diameter of 100-1000 um.

Further is: the width of the secondary shunt channel is 100-500um, and the depth is 20-300um.

The beneficial effects of the invention are as follows: the invention has simple structure and low cost, liquid enters the surface of the matrix through the secondary diversion channel after entering from the primary main flow diversion channel, the liquid is rapidly dispersed along the secondary diversion channel through the rapid diversion of the secondary diversion channel, and the three-level micropore structure channel has super-infiltration capacity, so that the liquid of the secondary diversion channel can be absorbed and further rapidly unfolded, the liquid dispersion degree is high, the dispersion is rapid, and the subsequent evaporation and gasification of the liquid are facilitated.

Drawings

Fig. 1 is a front view of a liquid distributor.

Fig. 2 is a cross-sectional view of the liquid distributor.

FIG. 3 is a front view of a liquid distributor having a plurality of primary flow channels.

FIG. 4 is a cross-sectional view of a liquid distributor having a plurality of primary flow channels.

Marked in the figure as: the device comprises a substrate 1, a primary main flow diversion channel 2, a secondary diversion channel 3 and a tertiary micropore structure channel 4.

Detailed Description

The invention is further described below with reference to the drawings and the detailed description.

The utility model provides a liquid distributor based on fractal bionic, includes base member 1, be provided with the one-level mainstream guiding channel 2 that runs through base member 1 on the base member 1, base member 1 surface is provided with a plurality of secondary diversion channels 3, the income mouth and the one-level mainstream guiding channel 2 of secondary diversion channels 3 link to each other, the mainstream guiding channel can be with the liquid in with the liquid storage pot direction base member 1 surface for the liquid in the mainstream guiding channel can be shunted rapidly to the secondary diversion channels 3 that base member 1 surface and mainstream guiding channel are connected for liquid is expanded rapidly, and the increase evaporation area of optimum limit improves evaporation efficiency.

In addition, the secondary diversion channel comprises a plurality of branches, so that liquid in the secondary diversion channel can diffuse towards different directions to accelerate diffusion efficiency, and the secondary diversion channel can be in various forms such as a grid structure, a dendritic structure, a river-like structure and the like.

On the basis of the above, the substrate surface is further provided with a three-level micropore structure channel 4, the three-level micropore structure channel 4 is a plurality of micropores or nano micropores or micro and nano mixed micropores formed on the substrate surface, the micropores form a channel, the channel formed by the micropores forms a grid-shaped or dendritic structure, the channel space formed by each micropore is also a micrometer or nano distance, the three-level micropore structure channel is connected with the edge of the secondary shunt channel everywhere, so that liquid in the secondary shunt channel can rapidly diffuse towards different directions of the substrate surface through the channels in the three-level micropore structure channel, the three-level micropore structure channel is fully distributed on the whole substrate surface, and the three-level micropore structure channel 4 has super-wetting capacity, so that the liquid in the secondary channel 3 can be rapidly absorbed and further spread, the liquid dispersion degree is high, the subsequent evaporation and gasification of the liquid are facilitated, the three-level structure of the liquid distributor can be similar to a plant blade in nature, the thickness of the liquid can be rapidly evaporated into several liquid films, and the following conditions are fully provided: the first-stage structure is a first-stage main flow diversion channel 2 which is similar to a plant leaf stem, liquid is guided from a storage tank to the surface of a blade, namely, a liquid distributor, the second-stage structure is a second diversion channel 3 which acts similar to a netlike vein on the blade, the liquid in the main flow diversion channel is distributed to the surface of the liquid distributor through the second diversion channel 3, the third-stage structure is a third-stage micro-nano structure which is similar to the surface of the plant blade, and the micro-nano structure has super-infiltration characteristic on the liquid, can absorb the liquid in the second diversion channel 3, so that the liquid is spread on the surface of the whole liquid distributor, and the three structures are mutually connected through one-time processing of laser on the surface of a base material.

In addition, the base body 1 is a three-dimensional plate-shaped structure formed by metal or ceramic, the surface of the base body is of a plane or curved surface structure, the three-dimensional plate-shaped structure enables the liquid distributor to be processed more conveniently, the number of the primary main flow diversion channels 2 is multiple, the primary main flow diversion channels 2 are of hole-shaped structures with diameters of 100-1000um, better diversion can be achieved by designing the multiple primary main flow diversion channels 2, and the outlet of the primary main flow diversion channels 2 is connected to each branch of the secondary diversion network. Since the network formed by the secondary shunt channels 3 adopts a fractal pattern, the diameter of the main flow channel can be adjusted according to the characteristic, so that the characteristic of liquid distribution can be adjusted. The width of the secondary diversion channel 3 is 100-500um, the depth is 20-300um, and the liquid distribution speed can be adjusted according to the body width adjustment of the secondary diversion channel 3, so that the secondary diversion channel is suitable for various places.

Example 1:

the central position of the platy matrix 1 adopts laser to beat a primary main flow diversion channel 2 with the diameter smaller than 1000um, the channel can lead the surface of the matrix 1 to divert liquid from bottom to top, the surface of the matrix 1 adopts laser to etch a secondary diversion channel 3 to form a branch-tendril-shaped secondary diversion network, and the branch-tendril-shaped secondary diversion network is connected with the primary main flow diversion channel 2.

Example 2:

the method comprises the steps of forming a primary main flow diversion channel 2 with the diameter smaller than 1000um at the center of a platy substrate 1 by laser, enabling the channel to conduct liquid from bottom to top to the surface of the substrate 1, scanning the surface of the substrate 1 by the laser, manufacturing a texturing layer with the diameter of 0-30 um, namely a tertiary micropore structure channel 4, and then engraving secondary diversion channels 3 with the same depth and the width of 200-500um on the surface of the substrate 1 to form a branch-tendril-shaped secondary diversion network, wherein the branch-tendril-shaped secondary diversion network is connected with the primary main flow diversion channel 2.

Example 3:

the method comprises the steps of forming a plurality of primary main flow diversion channels 2 with the diameter smaller than 1000um at the center of a platy substrate 1 by laser, enabling the channels to conduct liquid from bottom to top to the surface of the substrate 1, scanning the surface of the substrate 1 by the laser, manufacturing a texturing layer with the diameter of 0-30 um, namely a tertiary micropore structure channel 4, and then engraving secondary diversion channels 3 with the same depth and the width of 200-500um on the surface of the substrate 1 to form a branch-shaped secondary diversion network, wherein the outlet of each primary main flow diversion channel 2 is connected to each branch of the secondary diversion network.

While the foregoing is directed to embodiments of the present invention, other and further details of the invention may be had by the present invention, it should be understood that the foregoing description is merely illustrative of the present invention and that no limitations are intended to the scope of the invention, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the invention.

Claims

1. The utility model provides a liquid ware based on fractal bionic which characterized in that: the liquid diversion device comprises a substrate (1), wherein a primary main flow diversion channel (2) penetrating through the substrate (1) is arranged on the substrate (1), the primary main flow diversion channel (2) can divert liquid to the surface of the substrate (1) from bottom to top, a plurality of secondary diversion channels (3) are arranged on the surface of the substrate (1), the secondary diversion channels (3) form a branch-tendril-shaped secondary diversion network, and an inflow port of the secondary diversion channels (3) is connected with the primary main flow diversion channel (2);

the secondary shunt channel comprises a plurality of branches, so that liquid in the secondary shunt channel can diffuse towards different directions;

the surface of the matrix is also fully distributed with three-level micropore structure channels (4), the three-level micropore structure channels (4) are a plurality of micro-level micropores or nano-level micropores or micro-level and nano-level mixed micropores arranged on the surface of the matrix, the micropores form a channel, the channel spacing formed by each micropore is a micro-level or nano-level distance, liquid in the secondary shunt channel (3) can diffuse towards different directions on the surface of the matrix through the three-level micropore structure channels (4), and the liquid distributor expands the liquid into a liquid film with the thickness of microns;

the substrate (1) is of a three-dimensional plate-shaped structure composed of metal or ceramic, and the surface of the substrate is of a plane or curved surface structure.

2. The fractal-bionic-based liquid distributor as recited in claim 1, wherein: the primary main flow diversion channels (2) are multiple, and the primary main flow diversion channels (2) are of a hole-shaped structure with the diameter of 100-1000 um.

3. The fractal-bionic-based liquid distributor as recited in claim 1, wherein: the width of the secondary diversion channel (3) is 100-500um, and the depth is 20-300um.