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Hofmann (Beijing) Engineering Technology Co.,Ltd

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Production and manufacturing process of plate heat exchanger plates
Aug 03, 2018

The plate heat exchanger is an important component on the refrigeration mainframe. It is a combination of a set of corrugated metal plates. There are four corner holes on the plate for the two liquids for heat transfer to guide the fluid to flow through the respective channels alternately. Heat exchange, they are closely arranged, high precision, small volume, high heat exchange efficiency, space saving, high requirements for use environment, suitable for use on small refrigeration units, widely used in metallurgy, petroleum, chemical, food, pharmaceutical, Shipbuilding, textile, papermaking and other industries are excellent equipment for heating, cooling, heat recovery and rapid sterilization.


1. Plate splitting zone design: Even the widest plate can distribute the fluid evenly and evenly in all corners of the plate, so that the pressure loss in the splitting zone is minimized. All the heat exchange areas of the plate are involved in efficient heat transfer. All physical areas of the plate are converted into effective heat exchange area, no heat transfer dead zone, no flow dead angle, no easy to accumulate, not easy to cause chloride ion corrosion caused by fouling, can make full use of the allowable pressure drop, Increasing the flow rate of the convective heat exchange portion and improving the overall heat exchange efficiency.

2, single-sided flow design of the plate: the whole plate heat exchanger uses only one kind of plate, which is easier to be piped, easier to install and maintain equipment, and reduce the variety and quantity of plates and pads.

3. The plate has two corrugation angles of H and L: optimize the combination of heat exchanger plates to maximize heat transfer coefficient and reduce equipment cost.

4. One-time stamping and forming: the corrugation depth of the plate is the same on the same plate, so that each contact point between the plates is perfectly connected, there is no over-punching area on the plate. No hidden cracks will be produced, and the metal grain height on the plate is the same. The thinnest plate can reach 0.3mm. This makes the plate pressure-bearing capacity enhanced, avoids thermal stress fatigue, avoids mechanical fatigue corrosion caused by oscillation and high-frequency chattering, and the mechanical properties of the plate are better, avoiding the hidden crack. Leakage, contact points are evenly distributed. When the medium flows through the plate, the turbulence is strengthened, the heat transfer efficiency is maximized, the weight of the equipment is reduced, and a higher heat transfer coefficient is obtained under the pressure requirement.

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