Do you know about car radiators?
The radiator belongs to the automobile cooling system. The radiator in the engine water cooling system is composed of three parts: the water inlet chamber, the water outlet chamber, the main fin and the radiator core.
The radiator cools the coolant that has reached a high temperature. When the tubes and fins of the radiator are exposed to the airflow generated by the cooling fan and the airflow generated by the movement of the vehicle, the coolant in the radiator becomes cold.
Material: There are two main types of car radiators: aluminum and copper. The former is used in general passenger cars and the latter is used in large commercial vehicles.
Automotive radiator materials and manufacturing technology have developed rapidly. With its obvious advantages in lightweight materials, aluminum radiators are gradually replacing copper radiators in the fields of cars and light vehicles. At the same time, copper radiator manufacturing technology and technology have made great progress. Copper brazing radiators are used in passenger cars, Obvious advantages in engine radiators such as construction machinery and heavy trucks. The radiators for foreign cars are mostly aluminum radiators, which are mainly considered from the perspective of environmental protection (especially in European and American countries). In new European cars, aluminum radiators account for an average of 64%. From the perspective of the development prospects of my country's automobile radiator production, the number of aluminum radiators produced by brazing has gradually increased. Brazing copper radiators are also used in buses, trucks and other engineering equipment.
Structure: Automobile radiator is an indispensable and important component in automobile water-cooled engine cooling system, and it is developing in the direction of lightness, efficiency and economy.
The structure of automobile radiator is constantly adapting to new developments. The most common structural forms of automobile radiators can be divided into two types: DC type and cross-flow type. The structure of the core of the radiator is mainly divided into two types: tube-fin type and tube-band type.
The core of the fin-type radiator is composed of many thin cooling tubes and fins. Most of the cooling tubes use oblate cross-sections to reduce air resistance and increase heat transfer area.
The core of the radiator should have enough flow area for the coolant to pass through, and at the same time, it should have enough air flow area to allow enough air to pass through to take away the heat transferred from the coolant to the radiator.
At the same time, it must have enough heat dissipation area to complete the heat exchange between the coolant, air and the heat sink. The tube-belt radiator is formed by welding the corrugated heat-radiating belt and the cooling tube alternately arranged. Compared with the tube and fin type radiator, the tube and strip radiator can increase the heat dissipation area by about 12% under the same conditions. In addition, there are louver-like holes on the heat dissipation belt that disturb the airflow to destroy the flowing air on the surface of the heat dissipation belt. The adhesion layer on the upper side improves the heat dissipation capacity.
Use and maintenance:
1. The radiator should not be in contact with any acid, alkali or other corrosive properties.
2. It is recommended to use soft water. Hard water should be used after softening treatment to avoid blockage of the radiator and the generation of scale.
3. When using antifreeze, in order to avoid corrosion of the radiator, be sure to use a long-lasting anti-rust and antifreeze that is produced by a regular manufacturer and meets national standards.
4. In the process of installing the radiator, please do not damage the radiator (sheet) or bump the radiator to ensure the heat dissipation capacity and sealing.
5. When the radiator is completely drained and then filled with water, turn on the drain switch of the engine block first, and then close it when water flows out to avoid blisters.
6. In daily use, check the water level at any time, and add water after stopping the machine to cool down. When adding water, slowly open the water tank cover, and the operator should stay away from the water filling port as much as possible to prevent burns caused by high-pressure steam spraying from the water filling port.
7. In winter, in order to prevent the core from rupturing due to freezing, such as long-term parking or indirect parking, the water tank cover and drain switch should be released to release all the water.
8. The effective environment of the spare radiator should be ventilated and dry.
9. Depending on the actual situation, the user should completely clean the core of the radiator within 1 to 3 months. When cleaning, rinse with clean water along the reverse side of the air inlet.
10. The water level gauge should be cleaned once every 3 months or depending on the actual situation. All parts are removed and cleaned with warm water and non-corrosive detergent.
