Method for preventing condensation of aluminum alloy air duct of passenger car

Abstract

The invention discloses a method for preventing condensation of an aluminum alloy air duct of a passenger car. According to the invention, an aluminum alloy air duct needing to be machined is placed on a workbench of a glue spraying room, the inner surface needing to be machined is upward, and aerogel with a normal-temperature heat conductivity coefficient of 0.02-0.03 W / m.k is selected and sprayed to the to-be-machined surface of the aluminum alloy air duct through a spray gun so as to form a heat conduction isolation layer for preventing condensation. The heat conduction isolation layer witha thickness in a specific range, a heat conduction coefficient in a specific range, an adhesive force in a specific range and no volatile organic gas pollution is formed to block a heat conduction path of the aluminum alloy air duct; air conditioner cold air in the air duct and hot air in the car cannot form a temperature difference area larger than 2 DEG C on the surface of the aluminum alloy air duct; that is, the aluminum alloy air duct is changed into a part hardly having heat conduction capacity, and it is guaranteed that the condensation problem can be thoroughly solved even in severe weather conditions that a humidity is larger than or equal to 90% in summer in the south and a temperature difference is smaller than or equal to 15 DEG C inside and outside the car.

Description

technical field [0001] The invention belongs to the technical field of anti-condensation in air ducts of passenger cars, and in particular relates to a method for preventing condensation in aluminum alloy air ducts of passenger cars. Background technique [0002] The air duct is an important part of the passenger car and the key to the air-conditioning air circulation system. The traditional plastic air duct will cause mildew on the surface due to the large temperature difference and humidity for a long time, which is difficult to clean and clean, pollutes the air in the car, and affects the breathing of passengers. healthy. Aluminum alloy air ducts are widely used because of their effective prevention of mildew, high strength, and aesthetics, especially in luxury passenger cars. However, because of the high thermal conductivity of the aluminum material itself, the thermal conductivity is very good. Condensation is prone to occur on its surface, and when it accumulates, it ...

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Problems solved by technology

[0002] The air duct is an important part of the passenger car and the key to the air-conditioning air circulation system. The traditional plastic air duct will cause mildew on the surface due to the large temperature difference and humidity for a long time, which is difficult to clean and clean, pollutes the air in the car, and affects the breathing of passengers. healthy

Aluminum alloy air ducts are widely used because of their effective prevention of mildew, high strength, and aesthetics, especially in luxury passenger cars. However, because of the high thermal conductivity of the aluminum material itself, the thermal conductivity is very good. Condensation is easy to occur on its surface, and when it accumulates, water droplets will drop from the air outlet of the air duct to the floor, passenger seats, and even passengers, causing many complaints from passengers, and the industry has not been able to solve them for a long time

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