CN-121993930-A - Graphene aluminum evaporator and condenser and manufacturing method

Abstract

The invention discloses a graphene aluminum evaporator, a graphene aluminum condenser and a manufacturing method. A rectangular aluminum plate with the same length as the evaporating coil and the width equal to the diameter D.pi of the evaporating coil is cut, a plurality of small holes with the diameter of 0.2 mm are punched on the rectangular aluminum plate by laser, and then the evaporating coil is formed by rotating a shaft. Graphene powder and water are mixed together uniformly according to a ratio of 1:5 by adding a small amount of organic glue under stirring of a stirrer to form graphene suspension, and evaporation fins are arranged on an evaporation coil. And (3) placing the evaporating coil provided with the evaporating fins into the graphene suspension stirred by the stirrer for soaking. And (3) putting the evaporating coil and the evaporating fins, the surfaces of which are covered with the graphene suspension, into a drying furnace, evaporating most of water, only retaining a small part of water, and adhering the graphene on the evaporating coil and the evaporating fins. The evaporating coil and the evaporating fins losing part of water are placed into a heating furnace, 2MPar of nitrogen is introduced after the door is closed, and the temperature in the heating furnace is increased to 400 ℃ for solidification.

Inventors

• ZHANG YINGHUA

Assignees

• 张英华

Dates

Publication Date

20260508

Application Date

20260209

Claims (2)

1. 1. The graphene aluminum evaporator and the condenser are characterized in that a graphene film is arranged on the outer surface of an aluminum evaporator, graphene is arranged in a plurality of small holes with the diameter of 0.2 mm on an aluminum evaporating coil, a graphene film is arranged on the surface of an aluminum evaporating fin, a graphene film is arranged on the outer surface of the aluminum condenser, graphene is arranged in a plurality of small holes with the diameter of 0.2 mm on an aluminum condensing coil, and a graphene film is arranged on the surface of the aluminum condensing fin.
2. 2. The method for manufacturing the graphene aluminum evaporator and the condenser according to claim 1, wherein the method for manufacturing the graphene aluminum evaporator is characterized in that a rectangular aluminum plate which has the same length as an evaporation coil and the same width as the diameter D.pi of the evaporation coil is cut, a plurality of small holes with the diameter of 0.2mm are punched on the rectangular aluminum plate by laser, the rectangular aluminum plate is curled into a circular tube, gaps are welded to form the evaporation aluminum tube, threads are arranged at two ends of the evaporation aluminum tube, graphene powder and water are processed according to the ratio of 1:3, Mixing a small amount of organic glue with a stirrer to obtain graphene suspension, sealing the lower end of an evaporation aluminum pipe with a nut cap, placing sand into the evaporation aluminum pipe, sealing the upper end of the evaporation aluminum pipe with a nut cap, winding the evaporation aluminum pipe filled with sand into an evaporation coil with a flat round pipe, unscrewing the nut cap at two ends of the evaporation coil, pouring out the sand in the evaporation coil, blowing out the sand in the evaporation coil with compressed air, flushing the sand in the evaporation coil with water pressurized by a water pump, blowing out the water in the evaporation coil with compressed air, finally drying the evaporation coil, installing an evaporation fin on the evaporation coil, sealing one end of the evaporation coil with the nut cap, connecting the other end of the evaporation coil to a hair pipe of a blower, then placing the evaporation coil filled with the evaporation fin into the graphene suspension stirred by the stirrer, soaking the evaporation coil, removing the evaporation coil soaked with the graphene suspension, and removing the air pipe and the nuts due to the surface effect, The method comprises the steps of sealing small holes with 0.2 mm on an evaporation coil by graphene suspension, putting the evaporation coil and an evaporation fin covered with the graphene suspension on the surface into a drying furnace, evaporating most of water, only keeping a small part of water, adhering the graphene on the evaporation coil and the evaporation fin, putting the evaporation coil and the evaporation fin losing part of water into the heating furnace, closing the door, introducing 2MPar nitrogen, raising the temperature in the heating furnace to 220 ℃, pressing the graphene to the surfaces of the evaporation coil and the evaporation fin under the nitrogen pressure of 2Mpar, solidifying for the first time, taking the evaporation coil covered with the graphene on the surface out of the heating furnace, sealing two ends of the evaporation coil by a nut cap, soaking the graphene suspension in the graphene suspension stirred by a stirrer, taking out the evaporation coil soaked with the graphene suspension, removing the nut caps at two ends of the evaporation coil, putting the evaporation coil and the evaporation fin covered with the graphene suspension into the drying furnace, removing the evaporation coil and the nut caps at two ends of the evaporation coil, and placing the graphene suspension in the drying furnace, The method comprises the steps of evaporating most of water, keeping a small part of water, adhering graphene to an evaporation coil and an evaporation fin, placing the evaporation coil and the evaporation fin losing part of water into a heating furnace, closing the door, introducing 2MPar of nitrogen, raising the temperature in the heating furnace to 220 ℃, pressing the graphene to the surfaces of the evaporation coil and the evaporation fin under the pressure of the 2MPar of nitrogen, performing first solidification, raising the furnace temperature to 400 ℃, performing second solidification on the graphene, and taking out the graphene aluminum evaporator from the heating furnace, wherein the manufacturing method of the graphene aluminum condenser comprises the steps of cutting a rectangular aluminum plate with the length the same as that of the condensing coil and the width equal to the diameter D.pi of the condensing coil, punching a plurality of small holes with the diameter of 0.2 mm on the rectangular aluminum plate by laser, and curling the rectangular aluminum plate into a round tube, And the gaps are welded to form a condensing aluminum pipe, the two ends of the condensing aluminum pipe are threaded, graphene powder and water are mixed according to the ratio of 1:3, Mixing a small amount of organic glue with a stirrer to obtain graphene suspension, sealing the lower end of a condensing aluminum pipe with a nut cap, placing sand into a condensing aluminum pipe, sealing the upper end of the condensing aluminum pipe with a nut cap, winding the condensing aluminum pipe filled with sand into a condensing coil with a flat round pipe, screwing off the nut caps at two ends of the condensing coil, pouring out the sand in the condensing coil, blowing out the sand in the condensing coil with compressed air, flushing the sand in the condensing coil with water pressurized by a water pump, blowing out the water in the condensing coil with compressed air, drying the condensing coil, mounting the condensing fins on the condensing coil, sealing one end of the condensing coil with the nut cap, connecting the other end of the condensing coil to an air pipe of a blower, then placing the condensing coil filled with the condensing fins into the graphene suspension stirred by the stirrer, soaking the condensing coil, removing the condensing coil soaked with the graphene suspension, and removing the nut cap due to the surface effect, The method comprises the steps of sealing small holes with 0.2 mm on a condensing coil by graphene suspension, putting the condensing coil and an evaporating fin with the surfaces covered with the graphene suspension into a drying furnace, evaporating most of water, only keeping a small part of water, adhering the graphene on the condensing coil and the condensing fin, putting the condensing coil and the condensing fin with the water lost into the heating furnace, closing a door, introducing 2MPar nitrogen, raising the temperature in the heating furnace to 220 ℃, pressing the graphene towards the surfaces of the condensing coil and the condensing fin under the nitrogen pressure of 2Mpar, solidifying for the first time, taking out the condensing coil with the surface covered with the graphene from the heating furnace, sealing two ends of the condensing coil by a nut cap, soaking the graphene suspension in the graphene suspension stirred by a stirrer, taking out the condensing coil with the soaked graphene suspension, removing the nut caps at two ends of the condensing coil, putting the condensing coil and the condensing fin covered with the graphene suspension into the drying furnace, removing the condensing coil with the surface covered with the graphene suspension, The method comprises the steps of evaporating most of water, keeping less water, enabling graphene to adhere to a condensing coil and a condensing fin, placing the condensing coil and the condensing fin losing part of water into a heating furnace, closing a door, introducing 2MPar of nitrogen, raising the temperature in the heating furnace to 220 ℃, pressing the graphene to the surfaces of the condensing coil and the condensing fin under the nitrogen pressure of 2Mpar pressure, curing for the first time, raising the furnace temperature to 400 ℃, curing the graphene for the second time, and taking out the graphene aluminum condenser from the heating furnace.

Description

Graphene aluminum evaporator and condenser and manufacturing method Technical field: The invention relates to a graphene aluminum evaporator, a graphene aluminum condenser and a manufacturing method. The background technology is as follows: Most evaporators of air conditioners are made of copper, but each ton of copper is more than ten thousand Yuan RMB, and each ton of aluminum only needs twenty thousand Yuan RMB. The specific heat value of aluminum is greater than that of copper, that is, the heat transfer heat of aluminum is less efficient than that of copper, and aluminum is easily corroded, especially in condensers installed outdoors. Aluminum replaces copper, and the service life of the air conditioner is reduced from fifteen years to eight years, but the price of the air conditioner with aluminum replacing copper is half of that of the air conditioner with the same power. The aluminum condenser is arranged outdoors, and is easy to corrode and leak freon when being blown into the sun and rain forest. The heat transfer efficiency of the heat aluminum evaporator and condenser is only 60% of that of copper. The invention comprises the following steps: Graphene aluminum evaporator and condenser. A layer of graphene film is arranged on the outer surface of the aluminum evaporator, graphene is arranged in a plurality of small holes with the diameter of 0.2 mm on the aluminum evaporating coil, and a layer of graphene film is arranged on the surface of the aluminum evaporating fin. The graphene aluminum condenser has the structure that a layer of graphene film is arranged on the outer surface of an aluminum condenser, graphene is arranged in a plurality of small holes with the diameter of 0.2 millimeter on an aluminum condensing coil, and a layer of graphene film is arranged on the surface of an aluminum condensing fin. A manufacturing method of a graphene aluminum evaporator and a condenser. The manufacturing method of the graphene aluminum evaporator comprises the steps of cutting a rectangular aluminum plate with the length the same as that of an evaporation coil and the width the same as the diameter D.pi of the evaporation coil, punching a plurality of small holes with the diameter of 0.2 mm on the rectangular aluminum plate by laser, curling the rectangular aluminum plate into a circular tube, welding gaps to form the evaporation aluminum tube, and threading two ends of the evaporation aluminum tube. And uniformly mixing the graphene powder and water according to the proportion of 1:3, and adding a small amount of organic glue to the mixture under the stirring of a stirrer to form a graphene suspension. The lower end of the evaporation aluminum pipe is sealed by a nut cap, sand is put into the evaporation aluminum pipe, the upper end of the evaporation aluminum pipe is sealed by the nut cap, and then the evaporation aluminum pipe filled with sand is wound into an evaporation coil pipe by a oblate pipe. And unscrewing nut caps at two ends of the evaporation coil, pouring out sand in the evaporation coil, and blowing out the sand in the evaporation coil by compressed air. The sand in the evaporating coil is washed by water pressurized by a water pump, then the water in the evaporating coil is blown out by compressed air, finally the evaporating coil is dried, and the evaporating fins are arranged on the evaporating coil. One end of the evaporating coil is sealed by a nut cap, the other end of the evaporating coil is connected to a hair pipe of a blower, and then the evaporating coil with the evaporating fins is placed into graphene suspension stirred by a stirrer for soaking. Because the pressure inside the evaporating coil is greater than the pressure outside the evaporating coil, the graphene suspension cannot enter the evaporating coil, the evaporating coil soaked with the graphene suspension is taken out, and the air pipe and the inner nut are detached. The graphene suspension closes the 0.2 mm aperture on the evaporation coil due to surface tension. And (3) putting the evaporating coil and the evaporating fins, the surfaces of which are covered with the graphene suspension, into a drying furnace, evaporating most of water, only retaining a small part of water, and adhering the graphene on the evaporating coil and the evaporating fins. And (3) placing the evaporating coil and the evaporating fins losing part of water into a heating furnace, closing the door, introducing 2MPar of nitrogen, increasing the temperature in the heating furnace to 220 ℃, pressing the graphene to the surfaces of the evaporating coil and the evaporating fins under the nitrogen pressure of 2Mpar, and then curing for the first time. And taking the evaporating coil with the surface covered with the graphene on the surface of the evaporating fin out of the heating furnace, sealing the two ends of the evaporating coil by using a nut cap, and then putting the evaporating coil into the graphene suspension stirred by the stirrer f