Shandong Defu vacuum coating machine dedicated plate heat exchanger to cool the cooling

Wu Cheng Defu vacuum coating machine dedicated plate heat exchanger to cool the cooling! Vacuum coating machine is mainly refers to a class of vacuum coating needs at higher degree, specifically including many species, including vacuum ion evaporation, magnetron sputtering, MBE molecular beam epitaxy, PLD laser sputtering deposition are many. The main idea is to be divided into two kinds of evaporation and sputtering. Need to be become coated substrate material is plated to become a target. With the substrate and the target in a vacuum chamber. Evaporation is generally heated target surface component is in the form of groups of atoms or ions are evaporated, and the settlement of the substrate surface by forming a thin film forming process (scatter - layered growth - go Structure fans - island structure). For sputter coating type, can be simply understood as the use of high energy electron or laser bombardment target, and the surfaces of the components to form radicals or ions sputtered, and eventually deposited on the substrate surface, through the film formation process, eventually forming a thin film . The plate heat exchanger heat transfer mechanism is based on the heat transfer mechanism is based on the laws of thermodynamics: "Heat always pass spontaneously from a hot object to a cold objects, there is a temperature difference between the two fluids, there are bound to carry out the heat transfer", the existence of two temperature differential fluid in forced convection process, due to the heat transfer plate surface using corrugated wave structure optimized design, the heat exchange rate of 92%, even if the fluid flow rate value following Reynolds, fluid motion between the plates is also a three-dimensional movement, prompting the formation of severe fluid turbulence, reducing thermal boundary layer of enhanced heat transfer efficiency. BR-type man-shaped corrugated plate heat exchanger plate heat exchanger, followed by an inverted chevron corrugated plate when assembled, form a network in the fluid passage across the contact, fluid turbulence strong, enhanced heat transfer, and also allows the plates to increase rigidity, so that the plate heat exchanger can withstand cold, heat medium channel between the larger pressure. .