A plate heat exchanger is a type of heat exchanger made by a plate heat exchanger manufacturer, composed of a series of metal plates with a certain corrugated shape. Thin rectangular channels are formed between the plates, and heat exchange occurs through the plates. Plate heat exchangers are ideal equipment for liquid-liquid and liquid-vapor heat exchange. It features high heat exchange efficiency, low heat loss, compact and lightweight structure, small footprint, wide range of applications, and long service life. Under the same pressure loss, the heat transfer coefficient is 3-5 times that of tubular heat exchangers, occupies one-third of the floor area, and achieves heat recovery rates up to 90%.

The heat transfer structures used by plate heat exchanger manufacturers during manufacturing are as follows:

A plate heat exchanger mainly consists of two parts: the frame and the plate type. The board is made from a variety of materials. Plate heat exchanger manufacturers use various types of grinding tools to press thin plates into different shapes, then place them at the four corners of the plate, with corner holes for medium passage, and seal the plate's perimeter and corner holes with rubber gaskets. The frame consists of a fixed pressure plate, a movable pressure plate, an upper and lower guide rod, and clamping bolts. Plate heat exchangers are made by plate heat exchanger manufacturers by stacking plates on fixed compression plates and movable compression plates, then clamping them with clamping bolts.

The surface of the heat exchange plate is pressed into a corrugated or grooved shape to increase rigidity, improve fluid turbulence, and improve heat transfer efficiency. Materials typically include: stainless steel, copper, aluminum, aluminum alloy, titanium, nickel, etc. The corner holes at the board corners serve to connect the passage.

Plate heat exchanger manufacturers use the following accessories when manufacturing plate heat exchangers:

Gasket: The gasket is placed around the edge of the plate, not only serving as a seal but also creating a certain gap between the plates, allowing the fluid channel gasket to withstand a certain temperature. Pressure is also limited by the washer. Common gasket materials are NBR (NBR) and EPDN (ethylene-propylene propylene rubber). NBR (NBR) is kept below 150°C and pressured below 0.6MPa. EPDN (ethylene-propylene rubber) should be used at temperatures not exceeding 160°C and pressures below 2MPa

Upper and lower guide rods: Plate heat exchanger manufacturers use upper and lower guide rods to ensure the plate's positioning and tightly press it with end plates.