阅读说明：本技术 一种吹胀式液冷换热器及其制备方法 (Roll-bond liquid cooling heat exchanger and preparation method thereof ) 是由 潘琴 于 2019-01-15 设计创作，主要内容包括：本发明涉及一种吹胀式液冷换热器及其制备方法。本发明的吹胀式液冷换热器,所述吹胀式液冷换热器包括基板和形成在所述基板内的液体流道,所述液体流道的内表面形成有阻轧剂层,所述阻轧剂层包括氮化硼。本发明的吹胀式液冷换热器,液体流道的内表面设有阻轧剂层,所述阻轧剂层包括氮化硼,氮化硼具有抗化学侵蚀性质,且高温稳定性及耐热震性好,硬度高,将氮化硼用于阻轧剂层,能够防止液体介质对液冷换热器内表面的腐蚀,延长吹胀式液冷换热器的使用寿命。(The invention relates to an inflation type liquid cooling heat exchanger and a preparation method thereof. The roll-bond resistance layer is formed on the inner surface of the liquid flow channel, and the roll-bond resistance layer comprises boron nitride. According to the roll-up type liquid cooling heat exchanger, the inner surface of the liquid flow channel is provided with the rolling resistance agent layer, the rolling resistance agent layer comprises boron nitride, the boron nitride has chemical erosion resistance, high temperature stability and thermal shock resistance are good, hardness is high, the boron nitride is used for the rolling resistance agent layer, corrosion of a liquid medium to the inner surface of the liquid cooling heat exchanger can be prevented, and the service life of the roll-up type liquid cooling heat exchanger is prolonged.)

1. The utility model provides a roll-bond formula liquid cooling heat exchanger which characterized in that, roll-bond formula liquid cooling heat exchanger includes the base plate and forms liquid runner in the base plate, the internal surface of liquid runner is formed with the rolling inhibitor layer, the rolling inhibitor layer includes boron nitride.

2. A roll-bond liquid-cooled heat exchanger according to claim 1, wherein the boron nitride is in the form of particles having a diameter of 1 to 2 μm.

3. The roll-bond liquid cooled heat exchanger of claim 1, wherein the blocker layer further comprises one or both of zinc oxide and magnesium nitride.

4. The roll-bond liquid cooled heat exchanger of claim 1, wherein the blocker layer further comprises silica.

5. The roll-bond liquid cooled heat exchanger according to any of claims 1-4, wherein the blocker layer is comprised of the following components in mass percent: 93-99% of boron nitride, 0.3-5.7% of silicon dioxide, and the balance of one or two of zinc oxide and magnesium nitride.

6. A method of making a blown-up liquid cooled heat exchanger as claimed in claim 1, comprising the steps of:

1) coating or printing a rolling inhibitor on the surface of an aluminum plate, drying after heating treatment, covering another aluminum plate, heating to 450-580 ℃, preserving heat for 30-60 min, and annealing after rolling to form a substrate, wherein the rolling inhibitor comprises boron nitride emulsion and water, and also comprises one or more of the following components: moisture absorbent, preservative, curing agent, lubricant, thickener, additive;

2) drilling a blowing hole on the substrate in the step 1), and then blowing by adopting gas to enable the substrate to be blown up to form a liquid flow channel in the substrate;

3) and sealing the liquid flow channel by adopting argon arc welding, and then drilling a liquid inlet and a liquid outlet on the substrate to obtain the liquid flow channel.

7. The method according to claim 6, wherein the heating step in step 1) is carried out at 110-150 ℃ for 3-10 min.

8. The preparation method of claim 6, wherein the rolling inhibitor comprises the following components in percentage by mass: 60-90% of boron nitride emulsion, 1.0-5.0% of moisture absorbent, 0.5-2.0% of preservative, 0.2-1.0% of curing agent, 3.0-8.0% of lubricant, 0.5-5.0% of thickening agent, 0-9.5% of additive and the balance of water.

9. The preparation method of claim 6, wherein the curing agent is any one or more of sodium silicate, sodium metasilicate and potassium sodium silicate; the preservative is any one or more of zinc oxide, zinc chloride, zinc sulfate, sodium metazincate and magnesium nitride.

10. The preparation method according to claim 6, wherein the thickener is any one or more of methylcellulose, carboxymethylcellulose, hydroxyethylcellulose and hydroxypropylmethylcellulose; the lubricant is any one or more of gum arabic, propolis, paraffin and mineral oil; the additive is any one or more of a dispersing agent, a defoaming agent and a mildew preventive; the moisture absorbent is one or more of ethylene glycol, propylene glycol and glycerol.

Technical Field

The invention relates to a heat exchanger, in particular to an inflation type liquid cooling heat exchanger and a preparation method thereof.

Background

The roll-bond type liquid cooling heat exchanger is characterized in that a roll-bond inhibitor is printed or coated on a specific position of one aluminum plate, then the other aluminum plate is covered on the roll-bond type liquid cooling heat exchanger, and then a cavity is formed through rolling, compounding and blowing. Rolling and compounding are technological processes of combining double-layer or multi-layer metal plates into one body by rolling. The rolling inhibitor is a material for preventing the double-layer metal plates from being combined by rolling, and for example, a conventional rolling inhibitor is a graphite emulsion. The rolling inhibitor is coated or printed between the double-layer metal plates, so that when the double-layer metal plates are rolled and compounded, the areas coated or printed with the rolling inhibitor cannot be rolled and combined into a whole, and the double-layer metal plates in the areas still keep a mutually separated double-layer structure to form cavities (namely liquid flow channels). In the inflation type liquid cooling heat exchanger, a flowing medium in a liquid flow channel is cooling liquid, such as water, ethylene glycol and other media, so that the corrosion of the inner surface of the liquid flow channel is easily caused, and an aluminum plate is further corroded.

Disclosure of Invention

The invention aims to provide a roll-bond type liquid cooling heat exchanger, wherein a boron nitride rolling inhibitor layer is arranged on the inner surface of a liquid flow passage of the roll-bond type liquid cooling heat exchanger, and the roll-bond type liquid cooling heat exchanger has a good corrosion resistance effect.

A second object of the present invention is to provide a method for manufacturing the above-mentioned roll-bond liquid cooling heat exchanger.

In order to achieve the purpose, the technical scheme of the invention is as follows:

the utility model provides a roll-bond heat exchanger is cooled to roll-bond, includes the base plate and forms liquid runner in the base plate, the internal surface of liquid runner is formed with the rolling inhibitor layer, the rolling inhibitor layer includes boron nitride.

The liquid flow channel may be filled with a liquid medium. The liquid medium is any one of ethanol, glycol and water.

The boron nitride is granular, and the diameter of the granular boron nitride is 1-2 mu m.

The rolling retardant layer also comprises one or two of zinc oxide and magnesium nitride.

The rolling inhibitor layer also comprises silicon dioxide.

The rolling retardant layer comprises the following components in percentage by mass: 93-99% of boron nitride, 0.3-5.7% of silicon dioxide, and the balance of one or two of zinc oxide and magnesium nitride.

The preparation method of the roll-bond type liquid cooling heat exchanger comprises the following steps:

1) coating or printing a rolling inhibitor on the surface of an aluminum plate, drying after heating treatment, covering another aluminum plate, heating to 450-580 ℃, preserving heat for 30-60 min, and annealing after rolling to form a substrate, wherein the rolling inhibitor comprises boron nitride emulsion and water, and also comprises one or more of the following components: moisture absorbent, preservative, curing agent, lubricant, thickener, additive;

2) drilling a blowing hole on the substrate in the step 1), and then blowing by adopting gas to enable the substrate to be blown up to form a liquid flow channel in the substrate;

3) and sealing the liquid flow channel by adopting argon arc welding, and then drilling a liquid inlet and a liquid outlet on the substrate to obtain the liquid flow channel.

The heating treatment in the step 1) is heating to 110-150 ℃ and preserving heat for 3-10 min.

And 2) blowing with gas under the pressure of 8-10 MPa.

The preparation method of the inflation type liquid cooling heat exchanger further comprises the steps of introducing ammonia water into the liquid flow channel for cleaning before sealing, introducing ethylene glycol solution for cleaning, and drying.

The diameter of the monomer suspended boron nitride particles in the boron nitride emulsion is 1-2 mu m. The volume fraction of water in the boron nitride emulsion is 60-80%.

The mass fraction of the ammonia water is 0.1-0.5%. The time for flushing by introducing ammonia water is 1-2 min.

The mass fraction of the glycol solution is 10-90%. The time for introducing the ethylene glycol solution for cleaning is 1-3 min.

The rolling inhibitor comprises the following components in percentage by mass: 60-90% of boron nitride emulsion, 1.0-5.0% of moisture absorbent, 0.5-2.0% of preservative, 0.2-1.0% of curing agent, 3.0-8.0% of lubricant, 0.5-5.0% of thickening agent, 0-9.5% of additive and the balance of water.

The curing agent is any one or more of sodium silicate, sodium metasilicate and potassium sodium silicate; the preservative is any one or more of zinc oxide, zinc chloride, zinc sulfate, sodium metazincate and magnesium nitride.

The thickening agent is any one or more of methyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose and hydroxypropyl methyl cellulose; the lubricant is any one or more of gum arabic, propolis, paraffin and mineral oil; the additive is any one or more of a dispersing agent, a defoaming agent and a mildew preventive; the moisture absorbent is one or more of ethylene glycol, propylene glycol and glycerol.

The dispersing agent is any one or more of stearamide, vinyl bis-stearamide and zinc stearate.

The defoaming agent is any one or more of polyether (polyethylene glycol ether), high-carbon alcohol and polysiloxane (silicone oil). The higher alcohol is tridecanol or tetradecanol.

The mildew preventive is any one or more of phenolic compounds, nano zinc oxide and ammonia water. The phenolic compound is pentachlorophenol.

According to the roll-up type liquid cooling heat exchanger, the inner surface of the liquid flow channel is provided with the rolling resistance agent layer, the rolling resistance agent layer comprises boron nitride, the boron nitride has chemical erosion resistance, high temperature stability and thermal shock resistance are good, hardness is high, the boron nitride is used for the rolling resistance agent layer, corrosion of a liquid medium in the liquid flow channel to the inner surface of the liquid cooling heat exchanger can be prevented, and the service life of the roll-up type liquid cooling heat exchanger is prolonged.

Drawings

FIG. 1 is a schematic view of the structure of a roll-bond type liquid-cooled heat exchanger according to example 1;

FIG. 2 is a schematic view showing the appearance of the aluminum pipe of the roll-bond type liquid-cooled heat exchanger in example 1 after the salt spray test;

FIG. 3 is a schematic view of the appearance of an aluminum tube of an inflation type liquid-cooled heat exchanger prepared by using a graphite emulsion rolling inhibitor in an experimental example after a salt spray test.

Detailed Description