For vacuum frying, Heating
time and oil temperature stability are very important for vacuum fried chips
quality and output. Let me introduce how we design the heating system and make
sure stable temperature condition for vacuum frying production.
Heating
parts
As we
all know, vacuum fryer includes vacuum frying chamber and oil storage tank. The
tank is used for thawing and storing oil. We design and equip reasonable coil
heat exchanger inside to make sure the maximum thawing effect. This is the
first step heating.
We also
design and equipment the most effective tubular exchanger behind the chamber as
the second heating part, this is the main heating point. When we load the frozen
raw materials into the chamber, the oil temperature will be reduced minorly and
the ice on the raw material surface will thaw. How can we quickly increase oil
temperature to reasonable temperature and keep it, this is the difficult and
important point for producing perfect quality vacuum fried chips. We must calculate
right steam quantity and pressure based on clients’ product variety and
pre-processing technology, then design right pipeline size and heat exchanging area
to ensure perfect exchanging effect and speed.
Temperature
stability system
We specially
design and equip temperature stability system to ensure raw material could
touch uniform oil temperature, to solve the final chips uneven color problem. When
the vacuum fryer is working, the oil will be kept cyclic from frying chamber
and oil tank, and then heated by heat exchangers continuously. When the oil
temperature gets to the set number, steam valves will be turned down automatically
and temperature will be kept on fixed number.
All of
above action will be done automatic, you just need set up the reasonable frying
temperature on the PLC screen.