The spiral plate heat exchanger consists of two parallel metal plates rolled into two spiral channels, with hot and cold fluids flowing in opposite directions within the channels. Heat exchange occurs through the plate walls. This type of heat exchanger is compact, featuring high heat transfer efficiency and self-cleaning characteristics.
Structural Features
Spiral Channels: The two concentric spiral channels allow for central inflow at one end and peripheral outflow, while the other end accommodates peripheral inflow and central outflow, resulting in full counterflow.
Welded Seal: The sides of the channels are sealed with gaskets or welding to ensure that the two fluids do not mix.
Removable Design: Some models can be opened for cleaning, making them suitable for media prone to scaling.
Main Types:
Type I (Non-removable): Fully welded channels with good sealing performance, suitable for clean or non-scaling fluids.
Type II (Removable): One end can be opened for mechanical cleaning, suitable for scaling media.
Type III (Combination): One channel is a spiral plate, while the other consists of a tube bundle or other structures.
