In the chemical and pharmaceutical field,
the closed cooling and heating circulator is a cooling and heating temperature
control device that cooperates with various types of reactors, jacketed tanks,
reactors, extraction equipment and other equipment. It can realize cooling and
heating on the same machine. Its structure is reasonable and the operation is
simple. , Stable performance, widely used in pharmaceutical, chemical,
scientific research, biology, laboratory, environmental protection and other
industries.

Airtight cooling and heating circulators
can generally be divided into air-cooled and water-cooled. From the structure
point of view, the entire circulation system is airtight and leak-free. Among
them, the liquid circulation is a closed system, which can achieve no water
vapor absorption at low temperatures and no oil mist generation at high
temperatures. The expansion vessel and the liquid circulation are insulated and
do not participate in the liquid circulation. Therefore, the closed heating and
refrigeration integrated machine can play an important role in the fields with
high cleanliness requirements such as pharmaceuticals and chemical industries.

In recent years, with the rapid development
of China’s pharmaceutical and other industries, hermetic cooling and heating
circulators have also ushered in a better market prospect. And in terms of
market conditions, the strength of domestic closed cooling heating circulators
should not be underestimated. More and more manufacturers are emerging, launching
different models of equipment to meet the needs of the domestic market.

For example, the hermetic cooling and
heating circulator developed by Wuxi Guanya (LNEYA) uses branded compressors,
which can ensure long-term stable and reliable operation of the unit, while
providing excellent cooling effects. The electrical parts use good brand
products, which are stable and have a long life. For a long time, the
microcomputer full-function control operation panel is simple and quick, and
the interface is friendly and more user-friendly. And the product is specially
designed for appearance, beautiful and simple, and good quality.

In addition to the product quality of the
closed cooling heating circulator itself, purchasing reasonable and formal
equipment is the step to ensure that the equipment plays a good role. For
example, when purchasing, the user needs to pay attention to whether the upper
and lower temperature limits, ignition point, viscosity, freezing point, etc.
meet the requirements, and whether it is suitable for the use of the internal
pipeline of the instrument; when selecting the heat transfer medium pipe of the
equipment, the length should be as short as possible, and the diameter should
be as short as possible. As large as possible. The technician pointed out that
if the diameter is too small, it may cause slow speed.

At the same time, the technicians also
reminded not to use water as a heat transfer medium, otherwise it may have a
negative impact on the closed cooling and heating circulator, and may cause
damage to the equipment. It is recommended to use the heat transfer medium
specified by the manufacturer and use it within the specified pressure range.