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Working principle and type of food-grade multi-stage plate heat exchanger
Release time:
2020-09-18
The application of food-grade multi-stage plate heat exchanger in the food industry mainly includes: sterilization and cooling of salt, dairy products, soy sauce and vinegar, sterilization and cooling of animal and vegetable oil, heating and cooling of beer and wort in beer production, sugar production, gelatin concentration, sterilization and cooling, and production of sodium glutamate. Therefore, it occupies an important position in our life and brings a lot of convenience to our life.
The food-grade multi-stage plate heat exchanger is an ideal equipment for liquid-liquid and liquid-vapor heat exchange. It is a new type of high-efficiency heat exchanger, which is made of several rows of metal sheets with a certain corrugated shape. Because of its unique structure, it has formed a good advantage in many kinds of heat exchangers, so how does it work?
1、 Structural principle of food-grade multi-stage plate heat exchanger
It is composed of many stamped corrugated sheets with a certain distance between them, which are sealed with gaskets around and overlapped and pressed with frames and compression screws. The four corner holes of the plate and gasket form a fluid distribution pipe and a collection pipe. At the same time, the cold and hot fluids are reasonably separated to make them flow in the flow channels on both sides of each plate and conduct heat exchange through the plate.
2、 Working principle of food-grade multi-stage plate heat exchanger
It is a heat exchanger, which is formed by pressing thin metal plates into heat exchange plates with a certain corrugated shape, then stacking them together and fastening them with plywood and bolts. Thin rectangular channels are formed between various plates, and heat exchange is carried out through half plates. The working fluid flows through a narrow and tortuous channel formed between two plates. The cold fluid and hot fluid pass through the runner in turn, with a sandwich plate in the middle to separate the fluid and conduct heat exchange through the plate. The structure and heat exchange principle of food-grade multi-stage plate heat exchanger determine that it has the characteristics of compact structure, small floor area, high heat transfer efficiency, large operation flexibility, wide application range, small heat loss, convenient installation and cleaning, etc.
Generally speaking, we mainly distinguish the structure of food-grade multi-stage plate heat exchangers according to the shape of food-grade multi-stage plate heat exchangers, which can be divided into four categories: removable plate heat exchangers (also known as plate heat exchangers with gaskets), welded plate heat exchangers, spiral plate heat exchangers, and plate coil heat exchangers (also known as honeycomb heat exchangers). The welded plate heat exchanger is divided into semi-welded plate heat exchanger, fully welded plate heat exchanger, plate-shell heat exchanger and brazed plate heat exchanger.
The application of food-grade multi-stage plate heat exchanger in the food industry mainly includes: sterilization and cooling of salt, dairy products, soy sauce and vinegar, sterilization and cooling of animal and vegetable oil, heating and cooling of beer and wort in beer production, sugar production, gelatin concentration, sterilization and cooling, and production of sodium glutamate. Therefore, it occupies an important position in our life and brings a lot of convenience to our life.
