What should be noted when using a finned heat sink?

The finned heat sink, referred to as a heat sink, is classified as a "passive cooling component" in the field of electronic engineering design. Although it has many advantages, there are also many considerations to keep in mind. Below are some important points to note when using finned heat sinks.

　　Fin radiatorReferred to as a heat sink, the product is classified as a 'passive heat dissipation component' in the field of electronic engineering design. Although it has many advantages, there are also many precautions to consider. Below are some points to note when using a fin radiator.

Fin radiators are lightweight, increase the heat dissipation surface area, and have good heat dissipation effects, making them popular. They are safer to use. After absorbing heat, they dissipate it in the form of convection. In the convection cooling process, the area is mainly determined by the heat dissipation surface area of the fins. Importantly, they are much better than cast iron radiators in terms of energy saving and environmental protection. However, during use, there are actually high requirements for the pH value of water. Therefore, they are easily oxidized and can corrode the radiator, reducing its lifespan. Experiments show that the corrosion of fin radiators is caused by bacteria. In humid environments, some anaerobic bacteria can proliferate rapidly, producing large amounts of acid that severely corrode steel. It is important to note that corrosion can quickly create holes within a few months. Therefore, fin radiators should generally be filled with water for maintenance. This means that after heating stops, close the heating return valve and then open the air release valve; at this point, you can release air and then close the water inlet valve. This ensures low oxygen content in the heater, reduces corrosion, and extends its lifespan.

Additionally, when using fin radiators, it is important to know that after long-term use, dust or contaminants will inevitably adhere to the surface. Therefore, at the beginning and end of the heating season, wipe with a clean cloth. It is recommended to use a small amount of soapy water for wiping but remember not to use strongly corrosive acidic or alkaline solutions. The purpose of this is to remove scale or sediment caused by poor water quality, thereby extending its lifespan. It is also advisable to carefully check for leaks at the joints after stopping heating. If there is slight leakage, you can tie a towel around it. The towel will absorb water and will not damage the floor and walls in a short time.

The advantages of fin radiators are:

1) The base plate and fixed plate are connected using a plug-in structure for easy disassembly, maintenance, and transportation.

2) The support blocks can effectively support the fins, making the connection between the fins and the base plate and fixed plate more secure.

3) The dust-proof plate can prevent dust in the air from adhering to the gaps in the fins, ensuring good thermal conductivity efficiency.

4) The dust-proof plate is equipped with multiple heat dissipation holes, further ensuring the efficiency of the fin radiator.

Integrated light sources on the market conduct heat transfer by being packaged on an aluminum (copper) substrate with thermal paste applied on the back and attached to the fin radiator. While lighting up, the thermal energy released from the chip makes it difficult for the aluminum substrate to meet the temperature load of the chip; thus, chip degradation accelerates and processes like substrates and thermal paste incur costs.